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6cbd5570 CM |
1 | /* |
2 | * Copyright (C) 2007 Oracle. All rights reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public | |
6 | * License v2 as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
11 | * General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public | |
14 | * License along with this program; if not, write to the | |
15 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
16 | * Boston, MA 021110-1307, USA. | |
17 | */ | |
18 | ||
dc17ff8f CM |
19 | #ifndef __BTRFS_CTREE__ |
20 | #define __BTRFS_CTREE__ | |
eb60ceac | 21 | |
810191ff CM |
22 | #include <linux/mm.h> |
23 | #include <linux/highmem.h> | |
e20d96d6 | 24 | #include <linux/fs.h> |
a2de733c | 25 | #include <linux/rwsem.h> |
58176a96 | 26 | #include <linux/completion.h> |
04160088 | 27 | #include <linux/backing-dev.h> |
e6dcd2dc | 28 | #include <linux/wait.h> |
5a0e3ad6 | 29 | #include <linux/slab.h> |
f8b18087 | 30 | #include <linux/kobject.h> |
1abe9b8a | 31 | #include <trace/events/btrfs.h> |
479965d6 | 32 | #include <asm/kmap_types.h> |
3b16a4e3 | 33 | #include <linux/pagemap.h> |
d1310b2e | 34 | #include "extent_io.h" |
5f39d397 | 35 | #include "extent_map.h" |
8b712842 | 36 | #include "async-thread.h" |
a2de733c | 37 | #include "ioctl.h" |
e20d96d6 | 38 | |
e089f05c | 39 | struct btrfs_trans_handle; |
79154b1b | 40 | struct btrfs_transaction; |
a22285a6 | 41 | struct btrfs_pending_snapshot; |
35b7e476 CM |
42 | extern struct kmem_cache *btrfs_trans_handle_cachep; |
43 | extern struct kmem_cache *btrfs_transaction_cachep; | |
44 | extern struct kmem_cache *btrfs_bit_radix_cachep; | |
2c90e5d6 | 45 | extern struct kmem_cache *btrfs_path_cachep; |
dc89e982 | 46 | extern struct kmem_cache *btrfs_free_space_cachep; |
e6dcd2dc | 47 | struct btrfs_ordered_sum; |
e089f05c | 48 | |
2a7108ad | 49 | #define BTRFS_MAGIC "_BHRfS_M" |
eb60ceac | 50 | |
94598ba8 SB |
51 | #define BTRFS_MAX_MIRRORS 2 |
52 | ||
4008c04a | 53 | #define BTRFS_MAX_LEVEL 8 |
0b86a832 | 54 | |
5d4f98a2 YZ |
55 | #define BTRFS_COMPAT_EXTENT_TREE_V0 |
56 | ||
5a3f23d5 CM |
57 | /* |
58 | * files bigger than this get some pre-flushing when they are added | |
59 | * to the ordered operations list. That way we limit the total | |
60 | * work done by the commit | |
61 | */ | |
62 | #define BTRFS_ORDERED_OPERATIONS_FLUSH_LIMIT (8 * 1024 * 1024) | |
63 | ||
0b86a832 | 64 | /* holds pointers to all of the tree roots */ |
6407bf6d | 65 | #define BTRFS_ROOT_TREE_OBJECTID 1ULL |
0b86a832 CM |
66 | |
67 | /* stores information about which extents are in use, and reference counts */ | |
0cf6c620 | 68 | #define BTRFS_EXTENT_TREE_OBJECTID 2ULL |
0b86a832 | 69 | |
0b86a832 CM |
70 | /* |
71 | * chunk tree stores translations from logical -> physical block numbering | |
72 | * the super block points to the chunk tree | |
73 | */ | |
e085def2 | 74 | #define BTRFS_CHUNK_TREE_OBJECTID 3ULL |
0b86a832 CM |
75 | |
76 | /* | |
77 | * stores information about which areas of a given device are in use. | |
78 | * one per device. The tree of tree roots points to the device tree | |
79 | */ | |
e085def2 CM |
80 | #define BTRFS_DEV_TREE_OBJECTID 4ULL |
81 | ||
82 | /* one per subvolume, storing files and directories */ | |
83 | #define BTRFS_FS_TREE_OBJECTID 5ULL | |
84 | ||
85 | /* directory objectid inside the root tree */ | |
86 | #define BTRFS_ROOT_TREE_DIR_OBJECTID 6ULL | |
0b86a832 | 87 | |
d20f7043 CM |
88 | /* holds checksums of all the data extents */ |
89 | #define BTRFS_CSUM_TREE_OBJECTID 7ULL | |
90 | ||
0940ebf6 ID |
91 | /* for storing balance parameters in the root tree */ |
92 | #define BTRFS_BALANCE_OBJECTID -4ULL | |
93 | ||
630dc772 AJ |
94 | /* holds quota configuration and tracking */ |
95 | #define BTRFS_QUOTA_TREE_OBJECTID 8ULL | |
96 | ||
7b128766 JB |
97 | /* orhpan objectid for tracking unlinked/truncated files */ |
98 | #define BTRFS_ORPHAN_OBJECTID -5ULL | |
99 | ||
e02119d5 CM |
100 | /* does write ahead logging to speed up fsyncs */ |
101 | #define BTRFS_TREE_LOG_OBJECTID -6ULL | |
102 | #define BTRFS_TREE_LOG_FIXUP_OBJECTID -7ULL | |
103 | ||
e4657689 ZY |
104 | /* for space balancing */ |
105 | #define BTRFS_TREE_RELOC_OBJECTID -8ULL | |
106 | #define BTRFS_DATA_RELOC_TREE_OBJECTID -9ULL | |
107 | ||
d20f7043 CM |
108 | /* |
109 | * extent checksums all have this objectid | |
110 | * this allows them to share the logging tree | |
111 | * for fsyncs | |
112 | */ | |
113 | #define BTRFS_EXTENT_CSUM_OBJECTID -10ULL | |
114 | ||
0af3d00b JB |
115 | /* For storing free space cache */ |
116 | #define BTRFS_FREE_SPACE_OBJECTID -11ULL | |
117 | ||
82d5902d | 118 | /* |
527a1361 | 119 | * The inode number assigned to the special inode for storing |
82d5902d LZ |
120 | * free ino cache |
121 | */ | |
122 | #define BTRFS_FREE_INO_OBJECTID -12ULL | |
123 | ||
31840ae1 ZY |
124 | /* dummy objectid represents multiple objectids */ |
125 | #define BTRFS_MULTIPLE_OBJECTIDS -255ULL | |
126 | ||
0b86a832 | 127 | /* |
6527cdbe | 128 | * All files have objectids in this range. |
0b86a832 | 129 | */ |
f6dbff55 | 130 | #define BTRFS_FIRST_FREE_OBJECTID 256ULL |
6527cdbe | 131 | #define BTRFS_LAST_FREE_OBJECTID -256ULL |
e17cade2 | 132 | #define BTRFS_FIRST_CHUNK_TREE_OBJECTID 256ULL |
3768f368 | 133 | |
0b86a832 CM |
134 | |
135 | /* | |
136 | * the device items go into the chunk tree. The key is in the form | |
137 | * [ 1 BTRFS_DEV_ITEM_KEY device_id ] | |
138 | */ | |
139 | #define BTRFS_DEV_ITEMS_OBJECTID 1ULL | |
140 | ||
4df27c4d YZ |
141 | #define BTRFS_BTREE_INODE_OBJECTID 1 |
142 | ||
143 | #define BTRFS_EMPTY_SUBVOL_DIR_OBJECTID 2 | |
144 | ||
727011e0 CM |
145 | /* |
146 | * the max metadata block size. This limit is somewhat artificial, | |
147 | * but the memmove costs go through the roof for larger blocks. | |
148 | */ | |
149 | #define BTRFS_MAX_METADATA_BLOCKSIZE 65536 | |
150 | ||
e20d96d6 CM |
151 | /* |
152 | * we can actually store much bigger names, but lets not confuse the rest | |
153 | * of linux | |
154 | */ | |
155 | #define BTRFS_NAME_LEN 255 | |
156 | ||
f186373f MF |
157 | /* |
158 | * Theoretical limit is larger, but we keep this down to a sane | |
159 | * value. That should limit greatly the possibility of collisions on | |
160 | * inode ref items. | |
161 | */ | |
162 | #define BTRFS_LINK_MAX 65535U | |
163 | ||
f254e52c CM |
164 | /* 32 bytes in various csum fields */ |
165 | #define BTRFS_CSUM_SIZE 32 | |
607d432d JB |
166 | |
167 | /* csum types */ | |
168 | #define BTRFS_CSUM_TYPE_CRC32 0 | |
169 | ||
170 | static int btrfs_csum_sizes[] = { 4, 0 }; | |
171 | ||
509659cd | 172 | /* four bytes for CRC32 */ |
3954401f | 173 | #define BTRFS_EMPTY_DIR_SIZE 0 |
f254e52c | 174 | |
fabb5681 CM |
175 | #define BTRFS_FT_UNKNOWN 0 |
176 | #define BTRFS_FT_REG_FILE 1 | |
177 | #define BTRFS_FT_DIR 2 | |
178 | #define BTRFS_FT_CHRDEV 3 | |
179 | #define BTRFS_FT_BLKDEV 4 | |
180 | #define BTRFS_FT_FIFO 5 | |
181 | #define BTRFS_FT_SOCK 6 | |
182 | #define BTRFS_FT_SYMLINK 7 | |
5103e947 JB |
183 | #define BTRFS_FT_XATTR 8 |
184 | #define BTRFS_FT_MAX 9 | |
fabb5681 | 185 | |
3d136a11 SB |
186 | /* ioprio of readahead is set to idle */ |
187 | #define BTRFS_IOPRIO_READA (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_IDLE, 0)) | |
188 | ||
fec577fb | 189 | /* |
d4a78947 WF |
190 | * The key defines the order in the tree, and so it also defines (optimal) |
191 | * block layout. | |
192 | * | |
193 | * objectid corresponds to the inode number. | |
194 | * | |
195 | * type tells us things about the object, and is a kind of stream selector. | |
196 | * so for a given inode, keys with type of 1 might refer to the inode data, | |
197 | * type of 2 may point to file data in the btree and type == 3 may point to | |
198 | * extents. | |
fec577fb CM |
199 | * |
200 | * offset is the starting byte offset for this key in the stream. | |
e2fa7227 CM |
201 | * |
202 | * btrfs_disk_key is in disk byte order. struct btrfs_key is always | |
203 | * in cpu native order. Otherwise they are identical and their sizes | |
204 | * should be the same (ie both packed) | |
fec577fb | 205 | */ |
e2fa7227 CM |
206 | struct btrfs_disk_key { |
207 | __le64 objectid; | |
5f39d397 | 208 | u8 type; |
70b2befd | 209 | __le64 offset; |
e2fa7227 CM |
210 | } __attribute__ ((__packed__)); |
211 | ||
212 | struct btrfs_key { | |
eb60ceac | 213 | u64 objectid; |
5f39d397 | 214 | u8 type; |
70b2befd | 215 | u64 offset; |
eb60ceac CM |
216 | } __attribute__ ((__packed__)); |
217 | ||
0b86a832 CM |
218 | struct btrfs_mapping_tree { |
219 | struct extent_map_tree map_tree; | |
220 | }; | |
221 | ||
0b86a832 CM |
222 | struct btrfs_dev_item { |
223 | /* the internal btrfs device id */ | |
224 | __le64 devid; | |
225 | ||
226 | /* size of the device */ | |
227 | __le64 total_bytes; | |
228 | ||
229 | /* bytes used */ | |
230 | __le64 bytes_used; | |
231 | ||
232 | /* optimal io alignment for this device */ | |
233 | __le32 io_align; | |
234 | ||
235 | /* optimal io width for this device */ | |
236 | __le32 io_width; | |
237 | ||
238 | /* minimal io size for this device */ | |
239 | __le32 sector_size; | |
240 | ||
0b86a832 CM |
241 | /* type and info about this device */ |
242 | __le64 type; | |
243 | ||
2b82032c YZ |
244 | /* expected generation for this device */ |
245 | __le64 generation; | |
246 | ||
c3027eb5 CM |
247 | /* |
248 | * starting byte of this partition on the device, | |
d4a78947 | 249 | * to allow for stripe alignment in the future |
c3027eb5 CM |
250 | */ |
251 | __le64 start_offset; | |
252 | ||
e17cade2 CM |
253 | /* grouping information for allocation decisions */ |
254 | __le32 dev_group; | |
255 | ||
256 | /* seek speed 0-100 where 100 is fastest */ | |
257 | u8 seek_speed; | |
258 | ||
259 | /* bandwidth 0-100 where 100 is fastest */ | |
260 | u8 bandwidth; | |
261 | ||
0d81ba5d | 262 | /* btrfs generated uuid for this device */ |
e17cade2 | 263 | u8 uuid[BTRFS_UUID_SIZE]; |
2b82032c YZ |
264 | |
265 | /* uuid of FS who owns this device */ | |
266 | u8 fsid[BTRFS_UUID_SIZE]; | |
0b86a832 CM |
267 | } __attribute__ ((__packed__)); |
268 | ||
269 | struct btrfs_stripe { | |
270 | __le64 devid; | |
271 | __le64 offset; | |
e17cade2 | 272 | u8 dev_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
273 | } __attribute__ ((__packed__)); |
274 | ||
275 | struct btrfs_chunk { | |
e17cade2 CM |
276 | /* size of this chunk in bytes */ |
277 | __le64 length; | |
278 | ||
279 | /* objectid of the root referencing this chunk */ | |
0b86a832 | 280 | __le64 owner; |
e17cade2 | 281 | |
0b86a832 CM |
282 | __le64 stripe_len; |
283 | __le64 type; | |
284 | ||
285 | /* optimal io alignment for this chunk */ | |
286 | __le32 io_align; | |
287 | ||
288 | /* optimal io width for this chunk */ | |
289 | __le32 io_width; | |
290 | ||
291 | /* minimal io size for this chunk */ | |
292 | __le32 sector_size; | |
293 | ||
294 | /* 2^16 stripes is quite a lot, a second limit is the size of a single | |
295 | * item in the btree | |
296 | */ | |
297 | __le16 num_stripes; | |
321aecc6 CM |
298 | |
299 | /* sub stripes only matter for raid10 */ | |
300 | __le16 sub_stripes; | |
0b86a832 CM |
301 | struct btrfs_stripe stripe; |
302 | /* additional stripes go here */ | |
303 | } __attribute__ ((__packed__)); | |
304 | ||
0af3d00b JB |
305 | #define BTRFS_FREE_SPACE_EXTENT 1 |
306 | #define BTRFS_FREE_SPACE_BITMAP 2 | |
307 | ||
308 | struct btrfs_free_space_entry { | |
309 | __le64 offset; | |
310 | __le64 bytes; | |
311 | u8 type; | |
312 | } __attribute__ ((__packed__)); | |
313 | ||
314 | struct btrfs_free_space_header { | |
315 | struct btrfs_disk_key location; | |
316 | __le64 generation; | |
317 | __le64 num_entries; | |
318 | __le64 num_bitmaps; | |
319 | } __attribute__ ((__packed__)); | |
320 | ||
0b86a832 CM |
321 | static inline unsigned long btrfs_chunk_item_size(int num_stripes) |
322 | { | |
323 | BUG_ON(num_stripes == 0); | |
324 | return sizeof(struct btrfs_chunk) + | |
325 | sizeof(struct btrfs_stripe) * (num_stripes - 1); | |
326 | } | |
327 | ||
5d4f98a2 YZ |
328 | #define BTRFS_HEADER_FLAG_WRITTEN (1ULL << 0) |
329 | #define BTRFS_HEADER_FLAG_RELOC (1ULL << 1) | |
acce952b | 330 | |
331 | /* | |
332 | * File system states | |
333 | */ | |
334 | ||
335 | /* Errors detected */ | |
336 | #define BTRFS_SUPER_FLAG_ERROR (1ULL << 2) | |
337 | ||
5d4f98a2 YZ |
338 | #define BTRFS_SUPER_FLAG_SEEDING (1ULL << 32) |
339 | #define BTRFS_SUPER_FLAG_METADUMP (1ULL << 33) | |
340 | ||
341 | #define BTRFS_BACKREF_REV_MAX 256 | |
342 | #define BTRFS_BACKREF_REV_SHIFT 56 | |
343 | #define BTRFS_BACKREF_REV_MASK (((u64)BTRFS_BACKREF_REV_MAX - 1) << \ | |
344 | BTRFS_BACKREF_REV_SHIFT) | |
345 | ||
346 | #define BTRFS_OLD_BACKREF_REV 0 | |
347 | #define BTRFS_MIXED_BACKREF_REV 1 | |
63b10fc4 | 348 | |
fec577fb CM |
349 | /* |
350 | * every tree block (leaf or node) starts with this header. | |
351 | */ | |
bb492bb0 | 352 | struct btrfs_header { |
e17cade2 | 353 | /* these first four must match the super block */ |
f254e52c | 354 | u8 csum[BTRFS_CSUM_SIZE]; |
5f39d397 | 355 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 356 | __le64 bytenr; /* which block this node is supposed to live in */ |
63b10fc4 | 357 | __le64 flags; |
e17cade2 CM |
358 | |
359 | /* allowed to be different from the super from here on down */ | |
360 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; | |
7f5c1516 | 361 | __le64 generation; |
4d775673 | 362 | __le64 owner; |
5f39d397 | 363 | __le32 nritems; |
9a6f11ed | 364 | u8 level; |
eb60ceac CM |
365 | } __attribute__ ((__packed__)); |
366 | ||
5f39d397 | 367 | #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->nodesize - \ |
d397712b CM |
368 | sizeof(struct btrfs_header)) / \ |
369 | sizeof(struct btrfs_key_ptr)) | |
123abc88 | 370 | #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) |
5f39d397 | 371 | #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->leafsize)) |
236454df CM |
372 | #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
373 | sizeof(struct btrfs_item) - \ | |
374 | sizeof(struct btrfs_file_extent_item)) | |
f34f57a3 YZ |
375 | #define BTRFS_MAX_XATTR_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
376 | sizeof(struct btrfs_item) -\ | |
377 | sizeof(struct btrfs_dir_item)) | |
eb60ceac | 378 | |
0b86a832 CM |
379 | |
380 | /* | |
381 | * this is a very generous portion of the super block, giving us | |
382 | * room to translate 14 chunks with 3 stripes each. | |
383 | */ | |
384 | #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 | |
7ae9c09d | 385 | #define BTRFS_LABEL_SIZE 256 |
0b86a832 | 386 | |
af31f5e5 CM |
387 | /* |
388 | * just in case we somehow lose the roots and are not able to mount, | |
389 | * we store an array of the roots from previous transactions | |
390 | * in the super. | |
391 | */ | |
392 | #define BTRFS_NUM_BACKUP_ROOTS 4 | |
393 | struct btrfs_root_backup { | |
394 | __le64 tree_root; | |
395 | __le64 tree_root_gen; | |
396 | ||
397 | __le64 chunk_root; | |
398 | __le64 chunk_root_gen; | |
399 | ||
400 | __le64 extent_root; | |
401 | __le64 extent_root_gen; | |
402 | ||
403 | __le64 fs_root; | |
404 | __le64 fs_root_gen; | |
405 | ||
406 | __le64 dev_root; | |
407 | __le64 dev_root_gen; | |
408 | ||
409 | __le64 csum_root; | |
410 | __le64 csum_root_gen; | |
411 | ||
412 | __le64 total_bytes; | |
413 | __le64 bytes_used; | |
414 | __le64 num_devices; | |
415 | /* future */ | |
416 | __le64 unsed_64[4]; | |
417 | ||
418 | u8 tree_root_level; | |
419 | u8 chunk_root_level; | |
420 | u8 extent_root_level; | |
421 | u8 fs_root_level; | |
422 | u8 dev_root_level; | |
423 | u8 csum_root_level; | |
424 | /* future and to align */ | |
425 | u8 unused_8[10]; | |
426 | } __attribute__ ((__packed__)); | |
427 | ||
fec577fb CM |
428 | /* |
429 | * the super block basically lists the main trees of the FS | |
430 | * it currently lacks any block count etc etc | |
431 | */ | |
234b63a0 | 432 | struct btrfs_super_block { |
f254e52c | 433 | u8 csum[BTRFS_CSUM_SIZE]; |
63b10fc4 | 434 | /* the first 4 fields must match struct btrfs_header */ |
2b82032c | 435 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 436 | __le64 bytenr; /* this block number */ |
63b10fc4 | 437 | __le64 flags; |
e17cade2 CM |
438 | |
439 | /* allowed to be different from the btrfs_header from here own down */ | |
3768f368 | 440 | __le64 magic; |
3768f368 CM |
441 | __le64 generation; |
442 | __le64 root; | |
0b86a832 | 443 | __le64 chunk_root; |
e02119d5 | 444 | __le64 log_root; |
c3027eb5 CM |
445 | |
446 | /* this will help find the new super based on the log root */ | |
447 | __le64 log_root_transid; | |
db94535d CM |
448 | __le64 total_bytes; |
449 | __le64 bytes_used; | |
2e635a27 | 450 | __le64 root_dir_objectid; |
8a4b83cc | 451 | __le64 num_devices; |
5f39d397 CM |
452 | __le32 sectorsize; |
453 | __le32 nodesize; | |
454 | __le32 leafsize; | |
87ee04eb | 455 | __le32 stripesize; |
0b86a832 | 456 | __le32 sys_chunk_array_size; |
84234f3a | 457 | __le64 chunk_root_generation; |
f2b636e8 JB |
458 | __le64 compat_flags; |
459 | __le64 compat_ro_flags; | |
460 | __le64 incompat_flags; | |
607d432d | 461 | __le16 csum_type; |
db94535d | 462 | u8 root_level; |
0b86a832 | 463 | u8 chunk_root_level; |
e02119d5 | 464 | u8 log_root_level; |
0d81ba5d | 465 | struct btrfs_dev_item dev_item; |
c3027eb5 | 466 | |
7ae9c09d | 467 | char label[BTRFS_LABEL_SIZE]; |
c3027eb5 | 468 | |
0af3d00b JB |
469 | __le64 cache_generation; |
470 | ||
c3027eb5 | 471 | /* future expansion */ |
0af3d00b | 472 | __le64 reserved[31]; |
0b86a832 | 473 | u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; |
af31f5e5 | 474 | struct btrfs_root_backup super_roots[BTRFS_NUM_BACKUP_ROOTS]; |
cfaa7295 CM |
475 | } __attribute__ ((__packed__)); |
476 | ||
f2b636e8 JB |
477 | /* |
478 | * Compat flags that we support. If any incompat flags are set other than the | |
479 | * ones specified below then we will fail to mount | |
480 | */ | |
5d4f98a2 | 481 | #define BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF (1ULL << 0) |
0af3d00b | 482 | #define BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL (1ULL << 1) |
67377734 | 483 | #define BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS (1ULL << 2) |
a6fa6fae | 484 | #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO (1ULL << 3) |
727011e0 CM |
485 | /* |
486 | * some patches floated around with a second compression method | |
487 | * lets save that incompat here for when they do get in | |
488 | * Note we don't actually support it, we're just reserving the | |
489 | * number | |
490 | */ | |
491 | #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZOv2 (1ULL << 4) | |
492 | ||
493 | /* | |
494 | * older kernels tried to do bigger metadata blocks, but the | |
495 | * code was pretty buggy. Lets not let them try anymore. | |
496 | */ | |
497 | #define BTRFS_FEATURE_INCOMPAT_BIG_METADATA (1ULL << 5) | |
5d4f98a2 | 498 | |
f186373f MF |
499 | #define BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF (1ULL << 6) |
500 | ||
5d4f98a2 YZ |
501 | #define BTRFS_FEATURE_COMPAT_SUPP 0ULL |
502 | #define BTRFS_FEATURE_COMPAT_RO_SUPP 0ULL | |
0af3d00b JB |
503 | #define BTRFS_FEATURE_INCOMPAT_SUPP \ |
504 | (BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF | \ | |
67377734 | 505 | BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL | \ |
a6fa6fae | 506 | BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS | \ |
727011e0 | 507 | BTRFS_FEATURE_INCOMPAT_BIG_METADATA | \ |
f186373f MF |
508 | BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO | \ |
509 | BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF) | |
f2b636e8 | 510 | |
fec577fb | 511 | /* |
62e2749e | 512 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
513 | * the item in the leaf (relative to the start of the data area) |
514 | */ | |
0783fcfc | 515 | struct btrfs_item { |
e2fa7227 | 516 | struct btrfs_disk_key key; |
123abc88 | 517 | __le32 offset; |
5f39d397 | 518 | __le32 size; |
eb60ceac CM |
519 | } __attribute__ ((__packed__)); |
520 | ||
fec577fb CM |
521 | /* |
522 | * leaves have an item area and a data area: | |
523 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
524 | * | |
525 | * The data is separate from the items to get the keys closer together | |
526 | * during searches. | |
527 | */ | |
234b63a0 | 528 | struct btrfs_leaf { |
bb492bb0 | 529 | struct btrfs_header header; |
123abc88 | 530 | struct btrfs_item items[]; |
eb60ceac CM |
531 | } __attribute__ ((__packed__)); |
532 | ||
fec577fb CM |
533 | /* |
534 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
535 | * other blocks | |
536 | */ | |
123abc88 CM |
537 | struct btrfs_key_ptr { |
538 | struct btrfs_disk_key key; | |
539 | __le64 blockptr; | |
74493f7a | 540 | __le64 generation; |
123abc88 CM |
541 | } __attribute__ ((__packed__)); |
542 | ||
234b63a0 | 543 | struct btrfs_node { |
bb492bb0 | 544 | struct btrfs_header header; |
123abc88 | 545 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
546 | } __attribute__ ((__packed__)); |
547 | ||
fec577fb | 548 | /* |
234b63a0 CM |
549 | * btrfs_paths remember the path taken from the root down to the leaf. |
550 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
551 | * to any other levels that are present. |
552 | * | |
553 | * The slots array records the index of the item or block pointer | |
554 | * used while walking the tree. | |
555 | */ | |
234b63a0 | 556 | struct btrfs_path { |
5f39d397 | 557 | struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 558 | int slots[BTRFS_MAX_LEVEL]; |
925baedd CM |
559 | /* if there is real range locking, this locks field will change */ |
560 | int locks[BTRFS_MAX_LEVEL]; | |
3c69faec | 561 | int reada; |
925baedd | 562 | /* keep some upper locks as we walk down */ |
6702ed49 | 563 | int lowest_level; |
459931ec CM |
564 | |
565 | /* | |
566 | * set by btrfs_split_item, tells search_slot to keep all locks | |
567 | * and to force calls to keep space in the nodes | |
568 | */ | |
b9473439 CM |
569 | unsigned int search_for_split:1; |
570 | unsigned int keep_locks:1; | |
571 | unsigned int skip_locking:1; | |
572 | unsigned int leave_spinning:1; | |
5d4f98a2 | 573 | unsigned int search_commit_root:1; |
eb60ceac | 574 | }; |
5de08d7d | 575 | |
62e2749e CM |
576 | /* |
577 | * items in the extent btree are used to record the objectid of the | |
578 | * owner of the block and the number of references | |
579 | */ | |
5d4f98a2 | 580 | |
62e2749e | 581 | struct btrfs_extent_item { |
5d4f98a2 YZ |
582 | __le64 refs; |
583 | __le64 generation; | |
584 | __le64 flags; | |
585 | } __attribute__ ((__packed__)); | |
586 | ||
587 | struct btrfs_extent_item_v0 { | |
62e2749e | 588 | __le32 refs; |
74493f7a CM |
589 | } __attribute__ ((__packed__)); |
590 | ||
5d4f98a2 YZ |
591 | #define BTRFS_MAX_EXTENT_ITEM_SIZE(r) ((BTRFS_LEAF_DATA_SIZE(r) >> 4) - \ |
592 | sizeof(struct btrfs_item)) | |
593 | ||
594 | #define BTRFS_EXTENT_FLAG_DATA (1ULL << 0) | |
595 | #define BTRFS_EXTENT_FLAG_TREE_BLOCK (1ULL << 1) | |
596 | ||
597 | /* following flags only apply to tree blocks */ | |
598 | ||
599 | /* use full backrefs for extent pointers in the block */ | |
600 | #define BTRFS_BLOCK_FLAG_FULL_BACKREF (1ULL << 8) | |
601 | ||
a2de733c AJ |
602 | /* |
603 | * this flag is only used internally by scrub and may be changed at any time | |
604 | * it is only declared here to avoid collisions | |
605 | */ | |
606 | #define BTRFS_EXTENT_FLAG_SUPER (1ULL << 48) | |
607 | ||
5d4f98a2 YZ |
608 | struct btrfs_tree_block_info { |
609 | struct btrfs_disk_key key; | |
610 | u8 level; | |
611 | } __attribute__ ((__packed__)); | |
612 | ||
613 | struct btrfs_extent_data_ref { | |
614 | __le64 root; | |
615 | __le64 objectid; | |
616 | __le64 offset; | |
617 | __le32 count; | |
618 | } __attribute__ ((__packed__)); | |
619 | ||
620 | struct btrfs_shared_data_ref { | |
621 | __le32 count; | |
622 | } __attribute__ ((__packed__)); | |
623 | ||
624 | struct btrfs_extent_inline_ref { | |
625 | u8 type; | |
1bec1aed | 626 | __le64 offset; |
5d4f98a2 YZ |
627 | } __attribute__ ((__packed__)); |
628 | ||
629 | /* old style backrefs item */ | |
630 | struct btrfs_extent_ref_v0 { | |
74493f7a CM |
631 | __le64 root; |
632 | __le64 generation; | |
633 | __le64 objectid; | |
5d4f98a2 | 634 | __le32 count; |
62e2749e CM |
635 | } __attribute__ ((__packed__)); |
636 | ||
5d4f98a2 | 637 | |
0b86a832 CM |
638 | /* dev extents record free space on individual devices. The owner |
639 | * field points back to the chunk allocation mapping tree that allocated | |
e17cade2 | 640 | * the extent. The chunk tree uuid field is a way to double check the owner |
0b86a832 CM |
641 | */ |
642 | struct btrfs_dev_extent { | |
e17cade2 CM |
643 | __le64 chunk_tree; |
644 | __le64 chunk_objectid; | |
645 | __le64 chunk_offset; | |
0b86a832 | 646 | __le64 length; |
e17cade2 | 647 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
648 | } __attribute__ ((__packed__)); |
649 | ||
3954401f | 650 | struct btrfs_inode_ref { |
aec7477b | 651 | __le64 index; |
3954401f CM |
652 | __le16 name_len; |
653 | /* name goes here */ | |
654 | } __attribute__ ((__packed__)); | |
655 | ||
f186373f MF |
656 | struct btrfs_inode_extref { |
657 | __le64 parent_objectid; | |
658 | __le64 index; | |
659 | __le16 name_len; | |
660 | __u8 name[0]; | |
661 | /* name goes here */ | |
662 | } __attribute__ ((__packed__)); | |
663 | ||
0b86a832 | 664 | struct btrfs_timespec { |
f254e52c | 665 | __le64 sec; |
1e1d2701 CM |
666 | __le32 nsec; |
667 | } __attribute__ ((__packed__)); | |
668 | ||
95029d7d | 669 | enum btrfs_compression_type { |
261507a0 LZ |
670 | BTRFS_COMPRESS_NONE = 0, |
671 | BTRFS_COMPRESS_ZLIB = 1, | |
a6fa6fae LZ |
672 | BTRFS_COMPRESS_LZO = 2, |
673 | BTRFS_COMPRESS_TYPES = 2, | |
674 | BTRFS_COMPRESS_LAST = 3, | |
95029d7d | 675 | }; |
c8b97818 | 676 | |
1e1d2701 | 677 | struct btrfs_inode_item { |
e02119d5 | 678 | /* nfs style generation number */ |
1e1d2701 | 679 | __le64 generation; |
e02119d5 CM |
680 | /* transid that last touched this inode */ |
681 | __le64 transid; | |
1e1d2701 | 682 | __le64 size; |
a76a3cd4 | 683 | __le64 nbytes; |
31f3c99b | 684 | __le64 block_group; |
1e1d2701 CM |
685 | __le32 nlink; |
686 | __le32 uid; | |
687 | __le32 gid; | |
688 | __le32 mode; | |
0b86a832 | 689 | __le64 rdev; |
f2b636e8 | 690 | __le64 flags; |
c8b97818 | 691 | |
c3027eb5 CM |
692 | /* modification sequence number for NFS */ |
693 | __le64 sequence; | |
694 | ||
695 | /* | |
696 | * a little future expansion, for more than this we can | |
697 | * just grow the inode item and version it | |
698 | */ | |
699 | __le64 reserved[4]; | |
0b86a832 CM |
700 | struct btrfs_timespec atime; |
701 | struct btrfs_timespec ctime; | |
702 | struct btrfs_timespec mtime; | |
703 | struct btrfs_timespec otime; | |
1e1d2701 CM |
704 | } __attribute__ ((__packed__)); |
705 | ||
e02119d5 CM |
706 | struct btrfs_dir_log_item { |
707 | __le64 end; | |
708 | } __attribute__ ((__packed__)); | |
709 | ||
62e2749e | 710 | struct btrfs_dir_item { |
d6e4a428 | 711 | struct btrfs_disk_key location; |
e02119d5 | 712 | __le64 transid; |
5103e947 | 713 | __le16 data_len; |
a8a2ee0c | 714 | __le16 name_len; |
62e2749e CM |
715 | u8 type; |
716 | } __attribute__ ((__packed__)); | |
717 | ||
b83cc969 LZ |
718 | #define BTRFS_ROOT_SUBVOL_RDONLY (1ULL << 0) |
719 | ||
62e2749e | 720 | struct btrfs_root_item { |
d6e4a428 | 721 | struct btrfs_inode_item inode; |
84234f3a | 722 | __le64 generation; |
d6e4a428 | 723 | __le64 root_dirid; |
db94535d CM |
724 | __le64 bytenr; |
725 | __le64 byte_limit; | |
726 | __le64 bytes_used; | |
80ff3856 | 727 | __le64 last_snapshot; |
f2b636e8 | 728 | __le64 flags; |
62e2749e | 729 | __le32 refs; |
5eda7b5e CM |
730 | struct btrfs_disk_key drop_progress; |
731 | u8 drop_level; | |
db94535d | 732 | u8 level; |
8ea05e3a AB |
733 | |
734 | /* | |
735 | * The following fields appear after subvol_uuids+subvol_times | |
736 | * were introduced. | |
737 | */ | |
738 | ||
739 | /* | |
740 | * This generation number is used to test if the new fields are valid | |
741 | * and up to date while reading the root item. Everytime the root item | |
742 | * is written out, the "generation" field is copied into this field. If | |
743 | * anyone ever mounted the fs with an older kernel, we will have | |
744 | * mismatching generation values here and thus must invalidate the | |
745 | * new fields. See btrfs_update_root and btrfs_find_last_root for | |
746 | * details. | |
747 | * the offset of generation_v2 is also used as the start for the memset | |
748 | * when invalidating the fields. | |
749 | */ | |
750 | __le64 generation_v2; | |
751 | u8 uuid[BTRFS_UUID_SIZE]; | |
752 | u8 parent_uuid[BTRFS_UUID_SIZE]; | |
753 | u8 received_uuid[BTRFS_UUID_SIZE]; | |
754 | __le64 ctransid; /* updated when an inode changes */ | |
755 | __le64 otransid; /* trans when created */ | |
756 | __le64 stransid; /* trans when sent. non-zero for received subvol */ | |
757 | __le64 rtransid; /* trans when received. non-zero for received subvol */ | |
758 | struct btrfs_timespec ctime; | |
759 | struct btrfs_timespec otime; | |
760 | struct btrfs_timespec stime; | |
761 | struct btrfs_timespec rtime; | |
762 | __le64 reserved[8]; /* for future */ | |
9f5fae2f | 763 | } __attribute__ ((__packed__)); |
62e2749e | 764 | |
0660b5af CM |
765 | /* |
766 | * this is used for both forward and backward root refs | |
767 | */ | |
768 | struct btrfs_root_ref { | |
769 | __le64 dirid; | |
770 | __le64 sequence; | |
771 | __le16 name_len; | |
772 | } __attribute__ ((__packed__)); | |
773 | ||
0940ebf6 ID |
774 | struct btrfs_disk_balance_args { |
775 | /* | |
776 | * profiles to operate on, single is denoted by | |
777 | * BTRFS_AVAIL_ALLOC_BIT_SINGLE | |
778 | */ | |
779 | __le64 profiles; | |
780 | ||
781 | /* usage filter */ | |
782 | __le64 usage; | |
783 | ||
784 | /* devid filter */ | |
785 | __le64 devid; | |
786 | ||
787 | /* devid subset filter [pstart..pend) */ | |
788 | __le64 pstart; | |
789 | __le64 pend; | |
790 | ||
791 | /* btrfs virtual address space subset filter [vstart..vend) */ | |
792 | __le64 vstart; | |
793 | __le64 vend; | |
794 | ||
795 | /* | |
796 | * profile to convert to, single is denoted by | |
797 | * BTRFS_AVAIL_ALLOC_BIT_SINGLE | |
798 | */ | |
799 | __le64 target; | |
800 | ||
801 | /* BTRFS_BALANCE_ARGS_* */ | |
802 | __le64 flags; | |
803 | ||
804 | __le64 unused[8]; | |
805 | } __attribute__ ((__packed__)); | |
806 | ||
807 | /* | |
808 | * store balance parameters to disk so that balance can be properly | |
809 | * resumed after crash or unmount | |
810 | */ | |
811 | struct btrfs_balance_item { | |
812 | /* BTRFS_BALANCE_* */ | |
813 | __le64 flags; | |
814 | ||
815 | struct btrfs_disk_balance_args data; | |
816 | struct btrfs_disk_balance_args meta; | |
817 | struct btrfs_disk_balance_args sys; | |
818 | ||
819 | __le64 unused[4]; | |
820 | } __attribute__ ((__packed__)); | |
821 | ||
d899e052 YZ |
822 | #define BTRFS_FILE_EXTENT_INLINE 0 |
823 | #define BTRFS_FILE_EXTENT_REG 1 | |
824 | #define BTRFS_FILE_EXTENT_PREALLOC 2 | |
236454df | 825 | |
9f5fae2f | 826 | struct btrfs_file_extent_item { |
c8b97818 CM |
827 | /* |
828 | * transaction id that created this extent | |
829 | */ | |
71951f35 | 830 | __le64 generation; |
c8b97818 CM |
831 | /* |
832 | * max number of bytes to hold this extent in ram | |
833 | * when we split a compressed extent we can't know how big | |
834 | * each of the resulting pieces will be. So, this is | |
835 | * an upper limit on the size of the extent in ram instead of | |
836 | * an exact limit. | |
837 | */ | |
838 | __le64 ram_bytes; | |
839 | ||
840 | /* | |
841 | * 32 bits for the various ways we might encode the data, | |
842 | * including compression and encryption. If any of these | |
843 | * are set to something a given disk format doesn't understand | |
844 | * it is treated like an incompat flag for reading and writing, | |
845 | * but not for stat. | |
846 | */ | |
847 | u8 compression; | |
848 | u8 encryption; | |
849 | __le16 other_encoding; /* spare for later use */ | |
850 | ||
851 | /* are we inline data or a real extent? */ | |
236454df | 852 | u8 type; |
c8b97818 | 853 | |
9f5fae2f CM |
854 | /* |
855 | * disk space consumed by the extent, checksum blocks are included | |
856 | * in these numbers | |
857 | */ | |
db94535d CM |
858 | __le64 disk_bytenr; |
859 | __le64 disk_num_bytes; | |
9f5fae2f | 860 | /* |
dee26a9f | 861 | * the logical offset in file blocks (no csums) |
9f5fae2f CM |
862 | * this extent record is for. This allows a file extent to point |
863 | * into the middle of an existing extent on disk, sharing it | |
864 | * between two snapshots (useful if some bytes in the middle of the | |
865 | * extent have changed | |
866 | */ | |
867 | __le64 offset; | |
868 | /* | |
c8b97818 CM |
869 | * the logical number of file blocks (no csums included). This |
870 | * always reflects the size uncompressed and without encoding. | |
9f5fae2f | 871 | */ |
db94535d | 872 | __le64 num_bytes; |
c8b97818 | 873 | |
9f5fae2f CM |
874 | } __attribute__ ((__packed__)); |
875 | ||
f254e52c | 876 | struct btrfs_csum_item { |
509659cd | 877 | u8 csum; |
f254e52c CM |
878 | } __attribute__ ((__packed__)); |
879 | ||
733f4fbb SB |
880 | struct btrfs_dev_stats_item { |
881 | /* | |
882 | * grow this item struct at the end for future enhancements and keep | |
883 | * the existing values unchanged | |
884 | */ | |
885 | __le64 values[BTRFS_DEV_STAT_VALUES_MAX]; | |
886 | } __attribute__ ((__packed__)); | |
887 | ||
0b86a832 | 888 | /* different types of block groups (and chunks) */ |
52ba6929 ID |
889 | #define BTRFS_BLOCK_GROUP_DATA (1ULL << 0) |
890 | #define BTRFS_BLOCK_GROUP_SYSTEM (1ULL << 1) | |
891 | #define BTRFS_BLOCK_GROUP_METADATA (1ULL << 2) | |
892 | #define BTRFS_BLOCK_GROUP_RAID0 (1ULL << 3) | |
893 | #define BTRFS_BLOCK_GROUP_RAID1 (1ULL << 4) | |
894 | #define BTRFS_BLOCK_GROUP_DUP (1ULL << 5) | |
895 | #define BTRFS_BLOCK_GROUP_RAID10 (1ULL << 6) | |
a46d11a8 | 896 | #define BTRFS_BLOCK_GROUP_RESERVED BTRFS_AVAIL_ALLOC_BIT_SINGLE |
52ba6929 ID |
897 | #define BTRFS_NR_RAID_TYPES 5 |
898 | ||
899 | #define BTRFS_BLOCK_GROUP_TYPE_MASK (BTRFS_BLOCK_GROUP_DATA | \ | |
900 | BTRFS_BLOCK_GROUP_SYSTEM | \ | |
901 | BTRFS_BLOCK_GROUP_METADATA) | |
902 | ||
903 | #define BTRFS_BLOCK_GROUP_PROFILE_MASK (BTRFS_BLOCK_GROUP_RAID0 | \ | |
904 | BTRFS_BLOCK_GROUP_RAID1 | \ | |
905 | BTRFS_BLOCK_GROUP_DUP | \ | |
906 | BTRFS_BLOCK_GROUP_RAID10) | |
a46d11a8 ID |
907 | /* |
908 | * We need a bit for restriper to be able to tell when chunks of type | |
909 | * SINGLE are available. This "extended" profile format is used in | |
910 | * fs_info->avail_*_alloc_bits (in-memory) and balance item fields | |
911 | * (on-disk). The corresponding on-disk bit in chunk.type is reserved | |
912 | * to avoid remappings between two formats in future. | |
913 | */ | |
914 | #define BTRFS_AVAIL_ALLOC_BIT_SINGLE (1ULL << 48) | |
915 | ||
899c81ea ID |
916 | #define BTRFS_EXTENDED_PROFILE_MASK (BTRFS_BLOCK_GROUP_PROFILE_MASK | \ |
917 | BTRFS_AVAIL_ALLOC_BIT_SINGLE) | |
918 | ||
919 | static inline u64 chunk_to_extended(u64 flags) | |
920 | { | |
921 | if ((flags & BTRFS_BLOCK_GROUP_PROFILE_MASK) == 0) | |
922 | flags |= BTRFS_AVAIL_ALLOC_BIT_SINGLE; | |
923 | ||
924 | return flags; | |
925 | } | |
926 | static inline u64 extended_to_chunk(u64 flags) | |
927 | { | |
928 | return flags & ~BTRFS_AVAIL_ALLOC_BIT_SINGLE; | |
929 | } | |
930 | ||
9078a3e1 CM |
931 | struct btrfs_block_group_item { |
932 | __le64 used; | |
0b86a832 CM |
933 | __le64 chunk_objectid; |
934 | __le64 flags; | |
9078a3e1 CM |
935 | } __attribute__ ((__packed__)); |
936 | ||
630dc772 AJ |
937 | /* |
938 | * is subvolume quota turned on? | |
939 | */ | |
940 | #define BTRFS_QGROUP_STATUS_FLAG_ON (1ULL << 0) | |
941 | /* | |
942 | * SCANNING is set during the initialization phase | |
943 | */ | |
944 | #define BTRFS_QGROUP_STATUS_FLAG_SCANNING (1ULL << 1) | |
945 | /* | |
946 | * Some qgroup entries are known to be out of date, | |
947 | * either because the configuration has changed in a way that | |
948 | * makes a rescan necessary, or because the fs has been mounted | |
949 | * with a non-qgroup-aware version. | |
950 | * Turning qouta off and on again makes it inconsistent, too. | |
951 | */ | |
952 | #define BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT (1ULL << 2) | |
953 | ||
954 | #define BTRFS_QGROUP_STATUS_VERSION 1 | |
955 | ||
956 | struct btrfs_qgroup_status_item { | |
957 | __le64 version; | |
958 | /* | |
959 | * the generation is updated during every commit. As older | |
960 | * versions of btrfs are not aware of qgroups, it will be | |
961 | * possible to detect inconsistencies by checking the | |
962 | * generation on mount time | |
963 | */ | |
964 | __le64 generation; | |
965 | ||
966 | /* flag definitions see above */ | |
967 | __le64 flags; | |
968 | ||
969 | /* | |
970 | * only used during scanning to record the progress | |
971 | * of the scan. It contains a logical address | |
972 | */ | |
973 | __le64 scan; | |
974 | } __attribute__ ((__packed__)); | |
975 | ||
976 | struct btrfs_qgroup_info_item { | |
977 | __le64 generation; | |
978 | __le64 rfer; | |
979 | __le64 rfer_cmpr; | |
980 | __le64 excl; | |
981 | __le64 excl_cmpr; | |
982 | } __attribute__ ((__packed__)); | |
983 | ||
984 | /* flags definition for qgroup limits */ | |
985 | #define BTRFS_QGROUP_LIMIT_MAX_RFER (1ULL << 0) | |
986 | #define BTRFS_QGROUP_LIMIT_MAX_EXCL (1ULL << 1) | |
987 | #define BTRFS_QGROUP_LIMIT_RSV_RFER (1ULL << 2) | |
988 | #define BTRFS_QGROUP_LIMIT_RSV_EXCL (1ULL << 3) | |
989 | #define BTRFS_QGROUP_LIMIT_RFER_CMPR (1ULL << 4) | |
990 | #define BTRFS_QGROUP_LIMIT_EXCL_CMPR (1ULL << 5) | |
991 | ||
992 | struct btrfs_qgroup_limit_item { | |
993 | /* | |
994 | * only updated when any of the other values change | |
995 | */ | |
996 | __le64 flags; | |
997 | __le64 max_rfer; | |
998 | __le64 max_excl; | |
999 | __le64 rsv_rfer; | |
1000 | __le64 rsv_excl; | |
1001 | } __attribute__ ((__packed__)); | |
1002 | ||
6324fbf3 CM |
1003 | struct btrfs_space_info { |
1004 | u64 flags; | |
6a63209f | 1005 | |
89a55897 JB |
1006 | u64 total_bytes; /* total bytes in the space, |
1007 | this doesn't take mirrors into account */ | |
b742bb82 | 1008 | u64 bytes_used; /* total bytes used, |
e9c54999 | 1009 | this doesn't take mirrors into account */ |
6a63209f JB |
1010 | u64 bytes_pinned; /* total bytes pinned, will be freed when the |
1011 | transaction finishes */ | |
1012 | u64 bytes_reserved; /* total bytes the allocator has reserved for | |
1013 | current allocations */ | |
1014 | u64 bytes_readonly; /* total bytes that are read only */ | |
8929ecfa | 1015 | |
6a63209f | 1016 | u64 bytes_may_use; /* number of bytes that may be used for |
9ed74f2d | 1017 | delalloc/allocations */ |
b742bb82 | 1018 | u64 disk_used; /* total bytes used on disk */ |
89a55897 JB |
1019 | u64 disk_total; /* total bytes on disk, takes mirrors into |
1020 | account */ | |
6a63209f | 1021 | |
36e39c40 CM |
1022 | /* |
1023 | * we bump reservation progress every time we decrement | |
1024 | * bytes_reserved. This way people waiting for reservations | |
1025 | * know something good has happened and they can check | |
1026 | * for progress. The number here isn't to be trusted, it | |
1027 | * just shows reclaim activity | |
1028 | */ | |
1029 | unsigned long reservation_progress; | |
1030 | ||
4ea02885 | 1031 | unsigned int full:1; /* indicates that we cannot allocate any more |
6a63209f | 1032 | chunks for this space */ |
4ea02885 | 1033 | unsigned int chunk_alloc:1; /* set if we are allocating a chunk */ |
6d74119f | 1034 | |
fdb5effd JB |
1035 | unsigned int flush:1; /* set if we are trying to make space */ |
1036 | ||
4ea02885 DS |
1037 | unsigned int force_alloc; /* set if we need to force a chunk |
1038 | alloc for this space */ | |
6a63209f | 1039 | |
6324fbf3 | 1040 | struct list_head list; |
0f9dd46c JB |
1041 | |
1042 | /* for block groups in our same type */ | |
b742bb82 | 1043 | struct list_head block_groups[BTRFS_NR_RAID_TYPES]; |
0f9dd46c | 1044 | spinlock_t lock; |
80eb234a | 1045 | struct rw_semaphore groups_sem; |
fdb5effd | 1046 | wait_queue_head_t wait; |
0f9dd46c JB |
1047 | }; |
1048 | ||
66d8f3dd MX |
1049 | #define BTRFS_BLOCK_RSV_GLOBAL 1 |
1050 | #define BTRFS_BLOCK_RSV_DELALLOC 2 | |
1051 | #define BTRFS_BLOCK_RSV_TRANS 3 | |
1052 | #define BTRFS_BLOCK_RSV_CHUNK 4 | |
1053 | #define BTRFS_BLOCK_RSV_DELOPS 5 | |
1054 | #define BTRFS_BLOCK_RSV_EMPTY 6 | |
1055 | #define BTRFS_BLOCK_RSV_TEMP 7 | |
1056 | ||
f0486c68 YZ |
1057 | struct btrfs_block_rsv { |
1058 | u64 size; | |
1059 | u64 reserved; | |
f0486c68 | 1060 | struct btrfs_space_info *space_info; |
f0486c68 | 1061 | spinlock_t lock; |
66d8f3dd MX |
1062 | unsigned short full; |
1063 | unsigned short type; | |
1064 | unsigned short failfast; | |
f0486c68 YZ |
1065 | }; |
1066 | ||
fa9c0d79 CM |
1067 | /* |
1068 | * free clusters are used to claim free space in relatively large chunks, | |
1069 | * allowing us to do less seeky writes. They are used for all metadata | |
1070 | * allocations and data allocations in ssd mode. | |
1071 | */ | |
1072 | struct btrfs_free_cluster { | |
1073 | spinlock_t lock; | |
1074 | spinlock_t refill_lock; | |
1075 | struct rb_root root; | |
1076 | ||
1077 | /* largest extent in this cluster */ | |
1078 | u64 max_size; | |
1079 | ||
1080 | /* first extent starting offset */ | |
1081 | u64 window_start; | |
1082 | ||
1083 | struct btrfs_block_group_cache *block_group; | |
1084 | /* | |
1085 | * when a cluster is allocated from a block group, we put the | |
1086 | * cluster onto a list in the block group so that it can | |
1087 | * be freed before the block group is freed. | |
1088 | */ | |
1089 | struct list_head block_group_list; | |
6324fbf3 CM |
1090 | }; |
1091 | ||
817d52f8 JB |
1092 | enum btrfs_caching_type { |
1093 | BTRFS_CACHE_NO = 0, | |
1094 | BTRFS_CACHE_STARTED = 1, | |
291c7d2f JB |
1095 | BTRFS_CACHE_FAST = 2, |
1096 | BTRFS_CACHE_FINISHED = 3, | |
817d52f8 JB |
1097 | }; |
1098 | ||
0af3d00b JB |
1099 | enum btrfs_disk_cache_state { |
1100 | BTRFS_DC_WRITTEN = 0, | |
1101 | BTRFS_DC_ERROR = 1, | |
1102 | BTRFS_DC_CLEAR = 2, | |
1103 | BTRFS_DC_SETUP = 3, | |
1104 | BTRFS_DC_NEED_WRITE = 4, | |
1105 | }; | |
1106 | ||
11833d66 YZ |
1107 | struct btrfs_caching_control { |
1108 | struct list_head list; | |
1109 | struct mutex mutex; | |
1110 | wait_queue_head_t wait; | |
bab39bf9 | 1111 | struct btrfs_work work; |
11833d66 YZ |
1112 | struct btrfs_block_group_cache *block_group; |
1113 | u64 progress; | |
1114 | atomic_t count; | |
1115 | }; | |
1116 | ||
9078a3e1 CM |
1117 | struct btrfs_block_group_cache { |
1118 | struct btrfs_key key; | |
1119 | struct btrfs_block_group_item item; | |
817d52f8 | 1120 | struct btrfs_fs_info *fs_info; |
0af3d00b | 1121 | struct inode *inode; |
c286ac48 | 1122 | spinlock_t lock; |
324ae4df | 1123 | u64 pinned; |
e8569813 | 1124 | u64 reserved; |
1b2da372 | 1125 | u64 bytes_super; |
0b86a832 | 1126 | u64 flags; |
96303081 | 1127 | u64 sectorsize; |
5b0e95bf | 1128 | u64 cache_generation; |
0410c94a MK |
1129 | unsigned int ro:1; |
1130 | unsigned int dirty:1; | |
1131 | unsigned int iref:1; | |
0af3d00b JB |
1132 | |
1133 | int disk_cache_state; | |
0f9dd46c | 1134 | |
817d52f8 | 1135 | /* cache tracking stuff */ |
817d52f8 | 1136 | int cached; |
11833d66 YZ |
1137 | struct btrfs_caching_control *caching_ctl; |
1138 | u64 last_byte_to_unpin; | |
817d52f8 | 1139 | |
0f9dd46c JB |
1140 | struct btrfs_space_info *space_info; |
1141 | ||
1142 | /* free space cache stuff */ | |
34d52cb6 | 1143 | struct btrfs_free_space_ctl *free_space_ctl; |
0f9dd46c JB |
1144 | |
1145 | /* block group cache stuff */ | |
1146 | struct rb_node cache_node; | |
1147 | ||
1148 | /* for block groups in the same raid type */ | |
1149 | struct list_head list; | |
d2fb3437 YZ |
1150 | |
1151 | /* usage count */ | |
1152 | atomic_t count; | |
fa9c0d79 CM |
1153 | |
1154 | /* List of struct btrfs_free_clusters for this block group. | |
1155 | * Today it will only have one thing on it, but that may change | |
1156 | */ | |
1157 | struct list_head cluster_list; | |
ea658bad JB |
1158 | |
1159 | /* For delayed block group creation */ | |
1160 | struct list_head new_bg_list; | |
9078a3e1 | 1161 | }; |
0b86a832 | 1162 | |
097b8a7c JS |
1163 | /* delayed seq elem */ |
1164 | struct seq_list { | |
1165 | struct list_head list; | |
1166 | u64 seq; | |
1167 | }; | |
1168 | ||
1169 | /* fs_info */ | |
5d4f98a2 | 1170 | struct reloc_control; |
0b86a832 | 1171 | struct btrfs_device; |
8a4b83cc | 1172 | struct btrfs_fs_devices; |
c9e9f97b | 1173 | struct btrfs_balance_control; |
16cdcec7 | 1174 | struct btrfs_delayed_root; |
9f5fae2f | 1175 | struct btrfs_fs_info { |
5f39d397 | 1176 | u8 fsid[BTRFS_FSID_SIZE]; |
e17cade2 | 1177 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
62e2749e CM |
1178 | struct btrfs_root *extent_root; |
1179 | struct btrfs_root *tree_root; | |
0b86a832 CM |
1180 | struct btrfs_root *chunk_root; |
1181 | struct btrfs_root *dev_root; | |
3de4586c | 1182 | struct btrfs_root *fs_root; |
d20f7043 | 1183 | struct btrfs_root *csum_root; |
416ac51d | 1184 | struct btrfs_root *quota_root; |
e02119d5 CM |
1185 | |
1186 | /* the log root tree is a directory of all the other log roots */ | |
1187 | struct btrfs_root *log_root_tree; | |
4df27c4d YZ |
1188 | |
1189 | spinlock_t fs_roots_radix_lock; | |
0f7d52f4 | 1190 | struct radix_tree_root fs_roots_radix; |
1a5bc167 | 1191 | |
0f9dd46c JB |
1192 | /* block group cache stuff */ |
1193 | spinlock_t block_group_cache_lock; | |
1194 | struct rb_root block_group_cache_tree; | |
1195 | ||
2bf64758 JB |
1196 | /* keep track of unallocated space */ |
1197 | spinlock_t free_chunk_lock; | |
1198 | u64 free_chunk_space; | |
1199 | ||
11833d66 YZ |
1200 | struct extent_io_tree freed_extents[2]; |
1201 | struct extent_io_tree *pinned_extents; | |
1a5bc167 | 1202 | |
0b86a832 CM |
1203 | /* logical->physical extent mapping */ |
1204 | struct btrfs_mapping_tree mapping_tree; | |
1205 | ||
16cdcec7 MX |
1206 | /* |
1207 | * block reservation for extent, checksum, root tree and | |
1208 | * delayed dir index item | |
1209 | */ | |
f0486c68 YZ |
1210 | struct btrfs_block_rsv global_block_rsv; |
1211 | /* block reservation for delay allocation */ | |
1212 | struct btrfs_block_rsv delalloc_block_rsv; | |
1213 | /* block reservation for metadata operations */ | |
1214 | struct btrfs_block_rsv trans_block_rsv; | |
1215 | /* block reservation for chunk tree */ | |
1216 | struct btrfs_block_rsv chunk_block_rsv; | |
6d668dda JB |
1217 | /* block reservation for delayed operations */ |
1218 | struct btrfs_block_rsv delayed_block_rsv; | |
f0486c68 YZ |
1219 | |
1220 | struct btrfs_block_rsv empty_block_rsv; | |
1221 | ||
293ffd5f | 1222 | u64 generation; |
15ee9bc7 | 1223 | u64 last_trans_committed; |
12fcfd22 CM |
1224 | |
1225 | /* | |
1226 | * this is updated to the current trans every time a full commit | |
1227 | * is required instead of the faster short fsync log commits | |
1228 | */ | |
1229 | u64 last_trans_log_full_commit; | |
25cd999e | 1230 | unsigned long mount_opt; |
261507a0 | 1231 | unsigned long compress_type:4; |
6f568d35 | 1232 | u64 max_inline; |
8f662a76 | 1233 | u64 alloc_start; |
79154b1b | 1234 | struct btrfs_transaction *running_transaction; |
e6dcd2dc | 1235 | wait_queue_head_t transaction_throttle; |
f9295749 | 1236 | wait_queue_head_t transaction_wait; |
bb9c12c9 | 1237 | wait_queue_head_t transaction_blocked_wait; |
771ed689 | 1238 | wait_queue_head_t async_submit_wait; |
e02119d5 | 1239 | |
6c41761f DS |
1240 | struct btrfs_super_block *super_copy; |
1241 | struct btrfs_super_block *super_for_commit; | |
0b86a832 | 1242 | struct block_device *__bdev; |
e20d96d6 | 1243 | struct super_block *sb; |
d98237b3 | 1244 | struct inode *btree_inode; |
04160088 | 1245 | struct backing_dev_info bdi; |
e02119d5 | 1246 | struct mutex tree_log_mutex; |
a74a4b97 CM |
1247 | struct mutex transaction_kthread_mutex; |
1248 | struct mutex cleaner_mutex; | |
925baedd | 1249 | struct mutex chunk_mutex; |
7d9eb12c | 1250 | struct mutex volume_mutex; |
5a3f23d5 CM |
1251 | /* |
1252 | * this protects the ordered operations list only while we are | |
1253 | * processing all of the entries on it. This way we make | |
1254 | * sure the commit code doesn't find the list temporarily empty | |
1255 | * because another function happens to be doing non-waiting preflush | |
1256 | * before jumping into the main commit. | |
1257 | */ | |
1258 | struct mutex ordered_operations_mutex; | |
11833d66 | 1259 | struct rw_semaphore extent_commit_sem; |
5a3f23d5 | 1260 | |
c71bf099 | 1261 | struct rw_semaphore cleanup_work_sem; |
76dda93c | 1262 | |
c71bf099 | 1263 | struct rw_semaphore subvol_sem; |
76dda93c YZ |
1264 | struct srcu_struct subvol_srcu; |
1265 | ||
a4abeea4 | 1266 | spinlock_t trans_lock; |
7585717f CM |
1267 | /* |
1268 | * the reloc mutex goes with the trans lock, it is taken | |
1269 | * during commit to protect us from the relocation code | |
1270 | */ | |
1271 | struct mutex reloc_mutex; | |
1272 | ||
8fd17795 | 1273 | struct list_head trans_list; |
facda1e7 | 1274 | struct list_head dead_roots; |
11833d66 | 1275 | struct list_head caching_block_groups; |
e02119d5 | 1276 | |
24bbcf04 YZ |
1277 | spinlock_t delayed_iput_lock; |
1278 | struct list_head delayed_iputs; | |
1279 | ||
f29021b2 JS |
1280 | /* this protects tree_mod_seq_list */ |
1281 | spinlock_t tree_mod_seq_lock; | |
1282 | atomic_t tree_mod_seq; | |
1283 | struct list_head tree_mod_seq_list; | |
097b8a7c | 1284 | struct seq_list tree_mod_seq_elem; |
f29021b2 JS |
1285 | |
1286 | /* this protects tree_mod_log */ | |
1287 | rwlock_t tree_mod_log_lock; | |
1288 | struct rb_root tree_mod_log; | |
1289 | ||
cb03c743 | 1290 | atomic_t nr_async_submits; |
8c8bee1d | 1291 | atomic_t async_submit_draining; |
0986fe9e | 1292 | atomic_t nr_async_bios; |
771ed689 | 1293 | atomic_t async_delalloc_pages; |
a4abeea4 | 1294 | atomic_t open_ioctl_trans; |
ce9adaa5 | 1295 | |
3eaa2885 CM |
1296 | /* |
1297 | * this is used by the balancing code to wait for all the pending | |
1298 | * ordered extents | |
1299 | */ | |
1300 | spinlock_t ordered_extent_lock; | |
5a3f23d5 CM |
1301 | |
1302 | /* | |
1303 | * all of the data=ordered extents pending writeback | |
1304 | * these can span multiple transactions and basically include | |
1305 | * every dirty data page that isn't from nodatacow | |
1306 | */ | |
3eaa2885 | 1307 | struct list_head ordered_extents; |
5a3f23d5 CM |
1308 | |
1309 | /* | |
1310 | * all of the inodes that have delalloc bytes. It is possible for | |
1311 | * this list to be empty even when there is still dirty data=ordered | |
1312 | * extents waiting to finish IO. | |
1313 | */ | |
ea8c2819 | 1314 | struct list_head delalloc_inodes; |
3eaa2885 | 1315 | |
5a3f23d5 CM |
1316 | /* |
1317 | * special rename and truncate targets that must be on disk before | |
1318 | * we're allowed to commit. This is basically the ext3 style | |
1319 | * data=ordered list. | |
1320 | */ | |
1321 | struct list_head ordered_operations; | |
1322 | ||
8b712842 CM |
1323 | /* |
1324 | * there is a pool of worker threads for checksumming during writes | |
1325 | * and a pool for checksumming after reads. This is because readers | |
1326 | * can run with FS locks held, and the writers may be waiting for | |
1327 | * those locks. We don't want ordering in the pending list to cause | |
1328 | * deadlocks, and so the two are serviced separately. | |
1cc127b5 CM |
1329 | * |
1330 | * A third pool does submit_bio to avoid deadlocking with the other | |
1331 | * two | |
8b712842 | 1332 | */ |
61d92c32 | 1333 | struct btrfs_workers generic_worker; |
8b712842 | 1334 | struct btrfs_workers workers; |
771ed689 | 1335 | struct btrfs_workers delalloc_workers; |
8b712842 | 1336 | struct btrfs_workers endio_workers; |
d20f7043 | 1337 | struct btrfs_workers endio_meta_workers; |
cad321ad | 1338 | struct btrfs_workers endio_meta_write_workers; |
e6dcd2dc | 1339 | struct btrfs_workers endio_write_workers; |
0cb59c99 | 1340 | struct btrfs_workers endio_freespace_worker; |
1cc127b5 | 1341 | struct btrfs_workers submit_workers; |
bab39bf9 | 1342 | struct btrfs_workers caching_workers; |
90519d66 | 1343 | struct btrfs_workers readahead_workers; |
bab39bf9 | 1344 | |
247e743c CM |
1345 | /* |
1346 | * fixup workers take dirty pages that didn't properly go through | |
1347 | * the cow mechanism and make them safe to write. It happens | |
1348 | * for the sys_munmap function call path | |
1349 | */ | |
1350 | struct btrfs_workers fixup_workers; | |
16cdcec7 | 1351 | struct btrfs_workers delayed_workers; |
a74a4b97 CM |
1352 | struct task_struct *transaction_kthread; |
1353 | struct task_struct *cleaner_kthread; | |
4543df7e | 1354 | int thread_pool_size; |
8b712842 | 1355 | |
58176a96 JB |
1356 | struct kobject super_kobj; |
1357 | struct completion kobj_unregister; | |
e66f709b | 1358 | int do_barriers; |
facda1e7 | 1359 | int closing; |
e02119d5 | 1360 | int log_root_recovering; |
a22285a6 | 1361 | int enospc_unlink; |
a4abeea4 | 1362 | int trans_no_join; |
9f5fae2f | 1363 | |
324ae4df | 1364 | u64 total_pinned; |
b9473439 CM |
1365 | |
1366 | /* protected by the delalloc lock, used to keep from writing | |
1367 | * metadata until there is a nice batch | |
1368 | */ | |
1369 | u64 dirty_metadata_bytes; | |
0b86a832 CM |
1370 | struct list_head dirty_cowonly_roots; |
1371 | ||
8a4b83cc | 1372 | struct btrfs_fs_devices *fs_devices; |
4184ea7f CM |
1373 | |
1374 | /* | |
1375 | * the space_info list is almost entirely read only. It only changes | |
1376 | * when we add a new raid type to the FS, and that happens | |
1377 | * very rarely. RCU is used to protect it. | |
1378 | */ | |
6324fbf3 | 1379 | struct list_head space_info; |
4184ea7f | 1380 | |
b4d7c3c9 LZ |
1381 | struct btrfs_space_info *data_sinfo; |
1382 | ||
5d4f98a2 YZ |
1383 | struct reloc_control *reloc_ctl; |
1384 | ||
1832a6d5 CM |
1385 | spinlock_t delalloc_lock; |
1386 | u64 delalloc_bytes; | |
fa9c0d79 CM |
1387 | |
1388 | /* data_alloc_cluster is only used in ssd mode */ | |
1389 | struct btrfs_free_cluster data_alloc_cluster; | |
1390 | ||
1391 | /* all metadata allocations go through this cluster */ | |
1392 | struct btrfs_free_cluster meta_alloc_cluster; | |
d18a2c44 | 1393 | |
4cb5300b CM |
1394 | /* auto defrag inodes go here */ |
1395 | spinlock_t defrag_inodes_lock; | |
1396 | struct rb_root defrag_inodes; | |
1397 | atomic_t defrag_running; | |
1398 | ||
a46d11a8 ID |
1399 | /* |
1400 | * these three are in extended format (availability of single | |
1401 | * chunks is denoted by BTRFS_AVAIL_ALLOC_BIT_SINGLE bit, other | |
1402 | * types are denoted by corresponding BTRFS_BLOCK_GROUP_* bits) | |
1403 | */ | |
d18a2c44 CM |
1404 | u64 avail_data_alloc_bits; |
1405 | u64 avail_metadata_alloc_bits; | |
1406 | u64 avail_system_alloc_bits; | |
788f20eb | 1407 | |
c9e9f97b ID |
1408 | /* restriper state */ |
1409 | spinlock_t balance_lock; | |
1410 | struct mutex balance_mutex; | |
837d5b6e ID |
1411 | atomic_t balance_running; |
1412 | atomic_t balance_pause_req; | |
a7e99c69 | 1413 | atomic_t balance_cancel_req; |
c9e9f97b | 1414 | struct btrfs_balance_control *balance_ctl; |
837d5b6e | 1415 | wait_queue_head_t balance_wait_q; |
c9e9f97b | 1416 | |
97e728d4 JB |
1417 | unsigned data_chunk_allocations; |
1418 | unsigned metadata_ratio; | |
1419 | ||
788f20eb | 1420 | void *bdev_holder; |
acce952b | 1421 | |
a2de733c AJ |
1422 | /* private scrub information */ |
1423 | struct mutex scrub_lock; | |
1424 | atomic_t scrubs_running; | |
1425 | atomic_t scrub_pause_req; | |
1426 | atomic_t scrubs_paused; | |
1427 | atomic_t scrub_cancel_req; | |
1428 | wait_queue_head_t scrub_pause_wait; | |
1429 | struct rw_semaphore scrub_super_lock; | |
1430 | int scrub_workers_refcnt; | |
1431 | struct btrfs_workers scrub_workers; | |
1432 | ||
21adbd5c SB |
1433 | #ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY |
1434 | u32 check_integrity_print_mask; | |
1435 | #endif | |
416ac51d AJ |
1436 | /* |
1437 | * quota information | |
1438 | */ | |
1439 | unsigned int quota_enabled:1; | |
1440 | ||
1441 | /* | |
1442 | * quota_enabled only changes state after a commit. This holds the | |
1443 | * next state. | |
1444 | */ | |
1445 | unsigned int pending_quota_state:1; | |
1446 | ||
1447 | /* is qgroup tracking in a consistent state? */ | |
1448 | u64 qgroup_flags; | |
1449 | ||
1450 | /* holds configuration and tracking. Protected by qgroup_lock */ | |
1451 | struct rb_root qgroup_tree; | |
1452 | spinlock_t qgroup_lock; | |
1453 | ||
1454 | /* list of dirty qgroups to be written at next commit */ | |
1455 | struct list_head dirty_qgroups; | |
1456 | ||
1457 | /* used by btrfs_qgroup_record_ref for an efficient tree traversal */ | |
1458 | u64 qgroup_seq; | |
21adbd5c | 1459 | |
acce952b | 1460 | /* filesystem state */ |
1461 | u64 fs_state; | |
16cdcec7 MX |
1462 | |
1463 | struct btrfs_delayed_root *delayed_root; | |
af31f5e5 | 1464 | |
90519d66 AJ |
1465 | /* readahead tree */ |
1466 | spinlock_t reada_lock; | |
1467 | struct radix_tree_root reada_tree; | |
531f4b1a | 1468 | |
af31f5e5 CM |
1469 | /* next backup root to be overwritten */ |
1470 | int backup_root_index; | |
5af3e8cc SB |
1471 | |
1472 | int num_tolerated_disk_barrier_failures; | |
324ae4df | 1473 | }; |
0b86a832 | 1474 | |
9f5fae2f CM |
1475 | /* |
1476 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 1477 | * and for the extent tree extent_root root. |
9f5fae2f CM |
1478 | */ |
1479 | struct btrfs_root { | |
5f39d397 | 1480 | struct extent_buffer *node; |
925baedd | 1481 | |
5f39d397 | 1482 | struct extent_buffer *commit_root; |
e02119d5 | 1483 | struct btrfs_root *log_root; |
1a40e23b | 1484 | struct btrfs_root *reloc_root; |
31153d81 | 1485 | |
62e2749e CM |
1486 | struct btrfs_root_item root_item; |
1487 | struct btrfs_key root_key; | |
9f5fae2f | 1488 | struct btrfs_fs_info *fs_info; |
d0c803c4 CM |
1489 | struct extent_io_tree dirty_log_pages; |
1490 | ||
58176a96 JB |
1491 | struct kobject root_kobj; |
1492 | struct completion kobj_unregister; | |
a2135011 | 1493 | struct mutex objectid_mutex; |
7237f183 | 1494 | |
f0486c68 YZ |
1495 | spinlock_t accounting_lock; |
1496 | struct btrfs_block_rsv *block_rsv; | |
1497 | ||
581bb050 LZ |
1498 | /* free ino cache stuff */ |
1499 | struct mutex fs_commit_mutex; | |
1500 | struct btrfs_free_space_ctl *free_ino_ctl; | |
1501 | enum btrfs_caching_type cached; | |
1502 | spinlock_t cache_lock; | |
1503 | wait_queue_head_t cache_wait; | |
1504 | struct btrfs_free_space_ctl *free_ino_pinned; | |
1505 | u64 cache_progress; | |
82d5902d | 1506 | struct inode *cache_inode; |
581bb050 | 1507 | |
e02119d5 | 1508 | struct mutex log_mutex; |
7237f183 YZ |
1509 | wait_queue_head_t log_writer_wait; |
1510 | wait_queue_head_t log_commit_wait[2]; | |
1511 | atomic_t log_writers; | |
1512 | atomic_t log_commit[2]; | |
2ecb7923 | 1513 | atomic_t log_batch; |
7237f183 | 1514 | unsigned long log_transid; |
257c62e1 | 1515 | unsigned long last_log_commit; |
ff782e0a JB |
1516 | pid_t log_start_pid; |
1517 | bool log_multiple_pids; | |
ea8c2819 | 1518 | |
0f7d52f4 CM |
1519 | u64 objectid; |
1520 | u64 last_trans; | |
5f39d397 CM |
1521 | |
1522 | /* data allocations are done in sectorsize units */ | |
1523 | u32 sectorsize; | |
1524 | ||
1525 | /* node allocations are done in nodesize units */ | |
1526 | u32 nodesize; | |
1527 | ||
1528 | /* leaf allocations are done in leafsize units */ | |
1529 | u32 leafsize; | |
1530 | ||
87ee04eb CM |
1531 | u32 stripesize; |
1532 | ||
9f5fae2f | 1533 | u32 type; |
13a8a7c8 YZ |
1534 | |
1535 | u64 highest_objectid; | |
7585717f CM |
1536 | |
1537 | /* btrfs_record_root_in_trans is a multi-step process, | |
1538 | * and it can race with the balancing code. But the | |
1539 | * race is very small, and only the first time the root | |
1540 | * is added to each transaction. So in_trans_setup | |
1541 | * is used to tell us when more checks are required | |
1542 | */ | |
1543 | unsigned long in_trans_setup; | |
9f3a7427 | 1544 | int ref_cows; |
0b86a832 | 1545 | int track_dirty; |
4df27c4d YZ |
1546 | int in_radix; |
1547 | ||
3f157a2f | 1548 | u64 defrag_trans_start; |
6702ed49 | 1549 | struct btrfs_key defrag_progress; |
0ef3e66b | 1550 | struct btrfs_key defrag_max; |
6702ed49 | 1551 | int defrag_running; |
58176a96 | 1552 | char *name; |
0b86a832 CM |
1553 | |
1554 | /* the dirty list is only used by non-reference counted roots */ | |
1555 | struct list_head dirty_list; | |
7b128766 | 1556 | |
5d4f98a2 YZ |
1557 | struct list_head root_list; |
1558 | ||
d68fc57b | 1559 | spinlock_t orphan_lock; |
8a35d95f | 1560 | atomic_t orphan_inodes; |
d68fc57b YZ |
1561 | struct btrfs_block_rsv *orphan_block_rsv; |
1562 | int orphan_item_inserted; | |
1563 | int orphan_cleanup_state; | |
3394e160 | 1564 | |
5d4f98a2 YZ |
1565 | spinlock_t inode_lock; |
1566 | /* red-black tree that keeps track of in-memory inodes */ | |
1567 | struct rb_root inode_tree; | |
1568 | ||
16cdcec7 MX |
1569 | /* |
1570 | * radix tree that keeps track of delayed nodes of every inode, | |
1571 | * protected by inode_lock | |
1572 | */ | |
1573 | struct radix_tree_root delayed_nodes_tree; | |
3394e160 CM |
1574 | /* |
1575 | * right now this just gets used so that a root has its own devid | |
1576 | * for stat. It may be used for more later | |
1577 | */ | |
0ee5dc67 | 1578 | dev_t anon_dev; |
f1ebcc74 LB |
1579 | |
1580 | int force_cow; | |
8ea05e3a AB |
1581 | |
1582 | spinlock_t root_times_lock; | |
62e2749e CM |
1583 | }; |
1584 | ||
4cb5300b CM |
1585 | struct btrfs_ioctl_defrag_range_args { |
1586 | /* start of the defrag operation */ | |
1587 | __u64 start; | |
1588 | ||
1589 | /* number of bytes to defrag, use (u64)-1 to say all */ | |
1590 | __u64 len; | |
1591 | ||
1592 | /* | |
1593 | * flags for the operation, which can include turning | |
1594 | * on compression for this one defrag | |
1595 | */ | |
1596 | __u64 flags; | |
1597 | ||
1598 | /* | |
1599 | * any extent bigger than this will be considered | |
1600 | * already defragged. Use 0 to take the kernel default | |
1601 | * Use 1 to say every single extent must be rewritten | |
1602 | */ | |
1603 | __u32 extent_thresh; | |
1604 | ||
1605 | /* | |
1606 | * which compression method to use if turning on compression | |
1607 | * for this defrag operation. If unspecified, zlib will | |
1608 | * be used | |
1609 | */ | |
1610 | __u32 compress_type; | |
1611 | ||
1612 | /* spare for later */ | |
1613 | __u32 unused[4]; | |
1614 | }; | |
1615 | ||
1616 | ||
1e1d2701 CM |
1617 | /* |
1618 | * inode items have the data typically returned from stat and store other | |
1619 | * info about object characteristics. There is one for every file and dir in | |
1620 | * the FS | |
1621 | */ | |
9078a3e1 | 1622 | #define BTRFS_INODE_ITEM_KEY 1 |
0660b5af | 1623 | #define BTRFS_INODE_REF_KEY 12 |
f186373f | 1624 | #define BTRFS_INODE_EXTREF_KEY 13 |
0660b5af CM |
1625 | #define BTRFS_XATTR_ITEM_KEY 24 |
1626 | #define BTRFS_ORPHAN_ITEM_KEY 48 | |
9078a3e1 | 1627 | /* reserve 2-15 close to the inode for later flexibility */ |
1e1d2701 CM |
1628 | |
1629 | /* | |
1630 | * dir items are the name -> inode pointers in a directory. There is one | |
1631 | * for every name in a directory. | |
1632 | */ | |
0660b5af CM |
1633 | #define BTRFS_DIR_LOG_ITEM_KEY 60 |
1634 | #define BTRFS_DIR_LOG_INDEX_KEY 72 | |
1635 | #define BTRFS_DIR_ITEM_KEY 84 | |
1636 | #define BTRFS_DIR_INDEX_KEY 96 | |
1e1d2701 | 1637 | /* |
9078a3e1 | 1638 | * extent data is for file data |
1e1d2701 | 1639 | */ |
0660b5af | 1640 | #define BTRFS_EXTENT_DATA_KEY 108 |
d20f7043 | 1641 | |
f254e52c | 1642 | /* |
d20f7043 CM |
1643 | * extent csums are stored in a separate tree and hold csums for |
1644 | * an entire extent on disk. | |
f254e52c | 1645 | */ |
d20f7043 | 1646 | #define BTRFS_EXTENT_CSUM_KEY 128 |
f254e52c | 1647 | |
1e1d2701 | 1648 | /* |
d4a78947 | 1649 | * root items point to tree roots. They are typically in the root |
1e1d2701 CM |
1650 | * tree used by the super block to find all the other trees |
1651 | */ | |
0660b5af CM |
1652 | #define BTRFS_ROOT_ITEM_KEY 132 |
1653 | ||
1654 | /* | |
1655 | * root backrefs tie subvols and snapshots to the directory entries that | |
1656 | * reference them | |
1657 | */ | |
1658 | #define BTRFS_ROOT_BACKREF_KEY 144 | |
1659 | ||
1660 | /* | |
1661 | * root refs make a fast index for listing all of the snapshots and | |
1662 | * subvolumes referenced by a given root. They point directly to the | |
1663 | * directory item in the root that references the subvol | |
1664 | */ | |
1665 | #define BTRFS_ROOT_REF_KEY 156 | |
1666 | ||
1e1d2701 CM |
1667 | /* |
1668 | * extent items are in the extent map tree. These record which blocks | |
1669 | * are used, and how many references there are to each block | |
1670 | */ | |
0660b5af | 1671 | #define BTRFS_EXTENT_ITEM_KEY 168 |
5d4f98a2 YZ |
1672 | |
1673 | #define BTRFS_TREE_BLOCK_REF_KEY 176 | |
1674 | ||
1675 | #define BTRFS_EXTENT_DATA_REF_KEY 178 | |
1676 | ||
1677 | #define BTRFS_EXTENT_REF_V0_KEY 180 | |
1678 | ||
1679 | #define BTRFS_SHARED_BLOCK_REF_KEY 182 | |
1680 | ||
1681 | #define BTRFS_SHARED_DATA_REF_KEY 184 | |
9078a3e1 CM |
1682 | |
1683 | /* | |
1684 | * block groups give us hints into the extent allocation trees. Which | |
1685 | * blocks are free etc etc | |
1686 | */ | |
0660b5af | 1687 | #define BTRFS_BLOCK_GROUP_ITEM_KEY 192 |
9f5fae2f | 1688 | |
0660b5af CM |
1689 | #define BTRFS_DEV_EXTENT_KEY 204 |
1690 | #define BTRFS_DEV_ITEM_KEY 216 | |
1691 | #define BTRFS_CHUNK_ITEM_KEY 228 | |
0b86a832 | 1692 | |
630dc772 AJ |
1693 | /* |
1694 | * Records the overall state of the qgroups. | |
1695 | * There's only one instance of this key present, | |
1696 | * (0, BTRFS_QGROUP_STATUS_KEY, 0) | |
1697 | */ | |
1698 | #define BTRFS_QGROUP_STATUS_KEY 240 | |
1699 | /* | |
1700 | * Records the currently used space of the qgroup. | |
1701 | * One key per qgroup, (0, BTRFS_QGROUP_INFO_KEY, qgroupid). | |
1702 | */ | |
1703 | #define BTRFS_QGROUP_INFO_KEY 242 | |
1704 | /* | |
1705 | * Contains the user configured limits for the qgroup. | |
1706 | * One key per qgroup, (0, BTRFS_QGROUP_LIMIT_KEY, qgroupid). | |
1707 | */ | |
1708 | #define BTRFS_QGROUP_LIMIT_KEY 244 | |
1709 | /* | |
1710 | * Records the child-parent relationship of qgroups. For | |
1711 | * each relation, 2 keys are present: | |
1712 | * (childid, BTRFS_QGROUP_RELATION_KEY, parentid) | |
1713 | * (parentid, BTRFS_QGROUP_RELATION_KEY, childid) | |
1714 | */ | |
1715 | #define BTRFS_QGROUP_RELATION_KEY 246 | |
1716 | ||
0940ebf6 ID |
1717 | #define BTRFS_BALANCE_ITEM_KEY 248 |
1718 | ||
733f4fbb SB |
1719 | /* |
1720 | * Persistantly stores the io stats in the device tree. | |
1721 | * One key for all stats, (0, BTRFS_DEV_STATS_KEY, devid). | |
1722 | */ | |
1723 | #define BTRFS_DEV_STATS_KEY 249 | |
1724 | ||
1e1d2701 CM |
1725 | /* |
1726 | * string items are for debugging. They just store a short string of | |
1727 | * data in the FS | |
1728 | */ | |
9078a3e1 CM |
1729 | #define BTRFS_STRING_ITEM_KEY 253 |
1730 | ||
0942caa3 DS |
1731 | /* |
1732 | * Flags for mount options. | |
1733 | * | |
1734 | * Note: don't forget to add new options to btrfs_show_options() | |
1735 | */ | |
21ad10cf CM |
1736 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
1737 | #define BTRFS_MOUNT_NODATACOW (1 << 1) | |
1738 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) | |
e18e4809 | 1739 | #define BTRFS_MOUNT_SSD (1 << 3) |
dfe25020 | 1740 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
c8b97818 | 1741 | #define BTRFS_MOUNT_COMPRESS (1 << 5) |
3a5e1404 | 1742 | #define BTRFS_MOUNT_NOTREELOG (1 << 6) |
dccae999 | 1743 | #define BTRFS_MOUNT_FLUSHONCOMMIT (1 << 7) |
451d7585 | 1744 | #define BTRFS_MOUNT_SSD_SPREAD (1 << 8) |
c289811c | 1745 | #define BTRFS_MOUNT_NOSSD (1 << 9) |
e244a0ae | 1746 | #define BTRFS_MOUNT_DISCARD (1 << 10) |
a555f810 | 1747 | #define BTRFS_MOUNT_FORCE_COMPRESS (1 << 11) |
0af3d00b | 1748 | #define BTRFS_MOUNT_SPACE_CACHE (1 << 12) |
88c2ba3b | 1749 | #define BTRFS_MOUNT_CLEAR_CACHE (1 << 13) |
4260f7c7 | 1750 | #define BTRFS_MOUNT_USER_SUBVOL_RM_ALLOWED (1 << 14) |
91435650 | 1751 | #define BTRFS_MOUNT_ENOSPC_DEBUG (1 << 15) |
4cb5300b | 1752 | #define BTRFS_MOUNT_AUTO_DEFRAG (1 << 16) |
4b9465cb | 1753 | #define BTRFS_MOUNT_INODE_MAP_CACHE (1 << 17) |
af31f5e5 | 1754 | #define BTRFS_MOUNT_RECOVERY (1 << 18) |
9555c6c1 | 1755 | #define BTRFS_MOUNT_SKIP_BALANCE (1 << 19) |
c126dea7 CM |
1756 | #define BTRFS_MOUNT_CHECK_INTEGRITY (1 << 20) |
1757 | #define BTRFS_MOUNT_CHECK_INTEGRITY_INCLUDING_EXTENT_DATA (1 << 21) | |
8c342930 | 1758 | #define BTRFS_MOUNT_PANIC_ON_FATAL_ERROR (1 << 22) |
b6cda9bc CM |
1759 | |
1760 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) | |
1761 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) | |
1762 | #define btrfs_test_opt(root, opt) ((root)->fs_info->mount_opt & \ | |
1763 | BTRFS_MOUNT_##opt) | |
b98b6767 Y |
1764 | /* |
1765 | * Inode flags | |
1766 | */ | |
fdebe2bd Y |
1767 | #define BTRFS_INODE_NODATASUM (1 << 0) |
1768 | #define BTRFS_INODE_NODATACOW (1 << 1) | |
1769 | #define BTRFS_INODE_READONLY (1 << 2) | |
c8b97818 | 1770 | #define BTRFS_INODE_NOCOMPRESS (1 << 3) |
d899e052 | 1771 | #define BTRFS_INODE_PREALLOC (1 << 4) |
6cbff00f CH |
1772 | #define BTRFS_INODE_SYNC (1 << 5) |
1773 | #define BTRFS_INODE_IMMUTABLE (1 << 6) | |
1774 | #define BTRFS_INODE_APPEND (1 << 7) | |
1775 | #define BTRFS_INODE_NODUMP (1 << 8) | |
1776 | #define BTRFS_INODE_NOATIME (1 << 9) | |
1777 | #define BTRFS_INODE_DIRSYNC (1 << 10) | |
75e7cb7f | 1778 | #define BTRFS_INODE_COMPRESS (1 << 11) |
6cbff00f | 1779 | |
08fe4db1 LZ |
1780 | #define BTRFS_INODE_ROOT_ITEM_INIT (1 << 31) |
1781 | ||
cfed81a0 CM |
1782 | struct btrfs_map_token { |
1783 | struct extent_buffer *eb; | |
1784 | char *kaddr; | |
1785 | unsigned long offset; | |
1786 | }; | |
1787 | ||
1788 | static inline void btrfs_init_map_token (struct btrfs_map_token *token) | |
1789 | { | |
1790 | memset(token, 0, sizeof(*token)); | |
1791 | } | |
1792 | ||
5f39d397 CM |
1793 | /* some macros to generate set/get funcs for the struct fields. This |
1794 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple | |
1795 | * one for u8: | |
1796 | */ | |
1797 | #define le8_to_cpu(v) (v) | |
1798 | #define cpu_to_le8(v) (v) | |
1799 | #define __le8 u8 | |
1800 | ||
1801 | #define read_eb_member(eb, ptr, type, member, result) ( \ | |
1802 | read_extent_buffer(eb, (char *)(result), \ | |
1803 | ((unsigned long)(ptr)) + \ | |
1804 | offsetof(type, member), \ | |
1805 | sizeof(((type *)0)->member))) | |
1806 | ||
1807 | #define write_eb_member(eb, ptr, type, member, result) ( \ | |
1808 | write_extent_buffer(eb, (char *)(result), \ | |
1809 | ((unsigned long)(ptr)) + \ | |
1810 | offsetof(type, member), \ | |
1811 | sizeof(((type *)0)->member))) | |
1812 | ||
18077bb4 LZ |
1813 | #define DECLARE_BTRFS_SETGET_BITS(bits) \ |
1814 | u##bits btrfs_get_token_##bits(struct extent_buffer *eb, void *ptr, \ | |
1815 | unsigned long off, \ | |
1816 | struct btrfs_map_token *token); \ | |
1817 | void btrfs_set_token_##bits(struct extent_buffer *eb, void *ptr, \ | |
1818 | unsigned long off, u##bits val, \ | |
1819 | struct btrfs_map_token *token); \ | |
1820 | static inline u##bits btrfs_get_##bits(struct extent_buffer *eb, void *ptr, \ | |
1821 | unsigned long off) \ | |
1822 | { \ | |
1823 | return btrfs_get_token_##bits(eb, ptr, off, NULL); \ | |
1824 | } \ | |
1825 | static inline void btrfs_set_##bits(struct extent_buffer *eb, void *ptr, \ | |
1826 | unsigned long off, u##bits val) \ | |
1827 | { \ | |
1828 | btrfs_set_token_##bits(eb, ptr, off, val, NULL); \ | |
1829 | } | |
1830 | ||
1831 | DECLARE_BTRFS_SETGET_BITS(8) | |
1832 | DECLARE_BTRFS_SETGET_BITS(16) | |
1833 | DECLARE_BTRFS_SETGET_BITS(32) | |
1834 | DECLARE_BTRFS_SETGET_BITS(64) | |
1835 | ||
5f39d397 | 1836 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
18077bb4 LZ |
1837 | static inline u##bits btrfs_##name(struct extent_buffer *eb, type *s) \ |
1838 | { \ | |
1839 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1840 | return btrfs_get_##bits(eb, s, offsetof(type, member)); \ | |
1841 | } \ | |
1842 | static inline void btrfs_set_##name(struct extent_buffer *eb, type *s, \ | |
1843 | u##bits val) \ | |
1844 | { \ | |
1845 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1846 | btrfs_set_##bits(eb, s, offsetof(type, member), val); \ | |
1847 | } \ | |
1848 | static inline u##bits btrfs_token_##name(struct extent_buffer *eb, type *s, \ | |
1849 | struct btrfs_map_token *token) \ | |
1850 | { \ | |
1851 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1852 | return btrfs_get_token_##bits(eb, s, offsetof(type, member), token); \ | |
1853 | } \ | |
1854 | static inline void btrfs_set_token_##name(struct extent_buffer *eb, \ | |
1855 | type *s, u##bits val, \ | |
1856 | struct btrfs_map_token *token) \ | |
1857 | { \ | |
1858 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1859 | btrfs_set_token_##bits(eb, s, offsetof(type, member), val, token); \ | |
1860 | } | |
5f39d397 CM |
1861 | |
1862 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | |
1863 | static inline u##bits btrfs_##name(struct extent_buffer *eb) \ | |
1864 | { \ | |
727011e0 | 1865 | type *p = page_address(eb->pages[0]); \ |
df68b8a7 | 1866 | u##bits res = le##bits##_to_cpu(p->member); \ |
810191ff | 1867 | return res; \ |
5f39d397 CM |
1868 | } \ |
1869 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ | |
1870 | u##bits val) \ | |
1871 | { \ | |
727011e0 | 1872 | type *p = page_address(eb->pages[0]); \ |
df68b8a7 | 1873 | p->member = cpu_to_le##bits(val); \ |
5f39d397 | 1874 | } |
9078a3e1 | 1875 | |
5f39d397 CM |
1876 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
1877 | static inline u##bits btrfs_##name(type *s) \ | |
1878 | { \ | |
1879 | return le##bits##_to_cpu(s->member); \ | |
1880 | } \ | |
1881 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
1882 | { \ | |
1883 | s->member = cpu_to_le##bits(val); \ | |
1e1d2701 CM |
1884 | } |
1885 | ||
0b86a832 CM |
1886 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
1887 | BTRFS_SETGET_FUNCS(device_total_bytes, struct btrfs_dev_item, total_bytes, 64); | |
1888 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); | |
1889 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); | |
1890 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); | |
c3027eb5 CM |
1891 | BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, |
1892 | start_offset, 64); | |
0b86a832 CM |
1893 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); |
1894 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1895 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
1896 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); | |
1897 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); | |
2b82032c | 1898 | BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64); |
0b86a832 | 1899 | |
8a4b83cc CM |
1900 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
1901 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, | |
1902 | total_bytes, 64); | |
1903 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, | |
1904 | bytes_used, 64); | |
1905 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, | |
1906 | io_align, 32); | |
1907 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, | |
1908 | io_width, 32); | |
1909 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, | |
1910 | sector_size, 32); | |
1911 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1912 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
1913 | dev_group, 32); | |
1914 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, | |
1915 | seek_speed, 8); | |
1916 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, | |
1917 | bandwidth, 8); | |
2b82032c YZ |
1918 | BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item, |
1919 | generation, 64); | |
8a4b83cc | 1920 | |
0b86a832 CM |
1921 | static inline char *btrfs_device_uuid(struct btrfs_dev_item *d) |
1922 | { | |
1923 | return (char *)d + offsetof(struct btrfs_dev_item, uuid); | |
1924 | } | |
1925 | ||
2b82032c YZ |
1926 | static inline char *btrfs_device_fsid(struct btrfs_dev_item *d) |
1927 | { | |
1928 | return (char *)d + offsetof(struct btrfs_dev_item, fsid); | |
1929 | } | |
1930 | ||
e17cade2 | 1931 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
0b86a832 CM |
1932 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
1933 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); | |
1934 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); | |
1935 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); | |
1936 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); | |
1937 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); | |
1938 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); | |
321aecc6 | 1939 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
0b86a832 CM |
1940 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
1941 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); | |
1942 | ||
e17cade2 CM |
1943 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
1944 | { | |
1945 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); | |
1946 | } | |
1947 | ||
1948 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); | |
0b86a832 CM |
1949 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
1950 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, | |
1951 | stripe_len, 64); | |
1952 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, | |
1953 | io_align, 32); | |
1954 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, | |
1955 | io_width, 32); | |
1956 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, | |
1957 | sector_size, 32); | |
1958 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); | |
1959 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, | |
1960 | num_stripes, 16); | |
321aecc6 CM |
1961 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
1962 | sub_stripes, 16); | |
0b86a832 CM |
1963 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
1964 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); | |
1965 | ||
1966 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, | |
1967 | int nr) | |
1968 | { | |
1969 | unsigned long offset = (unsigned long)c; | |
1970 | offset += offsetof(struct btrfs_chunk, stripe); | |
1971 | offset += nr * sizeof(struct btrfs_stripe); | |
1972 | return (struct btrfs_stripe *)offset; | |
1973 | } | |
1974 | ||
a443755f CM |
1975 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
1976 | { | |
1977 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); | |
1978 | } | |
1979 | ||
0b86a832 CM |
1980 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
1981 | struct btrfs_chunk *c, int nr) | |
1982 | { | |
1983 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); | |
1984 | } | |
1985 | ||
0b86a832 CM |
1986 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, |
1987 | struct btrfs_chunk *c, int nr) | |
1988 | { | |
1989 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); | |
1990 | } | |
1991 | ||
5f39d397 CM |
1992 | /* struct btrfs_block_group_item */ |
1993 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, | |
1994 | used, 64); | |
1995 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, | |
1996 | used, 64); | |
0b86a832 CM |
1997 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, |
1998 | struct btrfs_block_group_item, chunk_objectid, 64); | |
e17cade2 CM |
1999 | |
2000 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, | |
0b86a832 CM |
2001 | struct btrfs_block_group_item, chunk_objectid, 64); |
2002 | BTRFS_SETGET_FUNCS(disk_block_group_flags, | |
2003 | struct btrfs_block_group_item, flags, 64); | |
2004 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, | |
2005 | struct btrfs_block_group_item, flags, 64); | |
1e1d2701 | 2006 | |
3954401f CM |
2007 | /* struct btrfs_inode_ref */ |
2008 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
aec7477b | 2009 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
3954401f | 2010 | |
f186373f MF |
2011 | /* struct btrfs_inode_extref */ |
2012 | BTRFS_SETGET_FUNCS(inode_extref_parent, struct btrfs_inode_extref, | |
2013 | parent_objectid, 64); | |
2014 | BTRFS_SETGET_FUNCS(inode_extref_name_len, struct btrfs_inode_extref, | |
2015 | name_len, 16); | |
2016 | BTRFS_SETGET_FUNCS(inode_extref_index, struct btrfs_inode_extref, index, 64); | |
2017 | ||
5f39d397 CM |
2018 | /* struct btrfs_inode_item */ |
2019 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
c3027eb5 | 2020 | BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64); |
e02119d5 | 2021 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
5f39d397 | 2022 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
a76a3cd4 | 2023 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); |
5f39d397 CM |
2024 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); |
2025 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
2026 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
2027 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
2028 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
0b86a832 | 2029 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
f2b636e8 | 2030 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64); |
1e1d2701 | 2031 | |
0b86a832 | 2032 | static inline struct btrfs_timespec * |
5f39d397 | 2033 | btrfs_inode_atime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 2034 | { |
5f39d397 CM |
2035 | unsigned long ptr = (unsigned long)inode_item; |
2036 | ptr += offsetof(struct btrfs_inode_item, atime); | |
0b86a832 | 2037 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
2038 | } |
2039 | ||
0b86a832 | 2040 | static inline struct btrfs_timespec * |
5f39d397 | 2041 | btrfs_inode_mtime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 2042 | { |
5f39d397 CM |
2043 | unsigned long ptr = (unsigned long)inode_item; |
2044 | ptr += offsetof(struct btrfs_inode_item, mtime); | |
0b86a832 | 2045 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
2046 | } |
2047 | ||
0b86a832 | 2048 | static inline struct btrfs_timespec * |
5f39d397 | 2049 | btrfs_inode_ctime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 2050 | { |
5f39d397 CM |
2051 | unsigned long ptr = (unsigned long)inode_item; |
2052 | ptr += offsetof(struct btrfs_inode_item, ctime); | |
0b86a832 | 2053 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
2054 | } |
2055 | ||
0b86a832 CM |
2056 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
2057 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); | |
e20d96d6 | 2058 | |
0b86a832 | 2059 | /* struct btrfs_dev_extent */ |
e17cade2 CM |
2060 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
2061 | chunk_tree, 64); | |
2062 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
2063 | chunk_objectid, 64); | |
2064 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, | |
2065 | chunk_offset, 64); | |
0b86a832 CM |
2066 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
2067 | ||
e17cade2 CM |
2068 | static inline u8 *btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) |
2069 | { | |
2070 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); | |
2071 | return (u8 *)((unsigned long)dev + ptr); | |
2072 | } | |
2073 | ||
5d4f98a2 YZ |
2074 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64); |
2075 | BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item, | |
2076 | generation, 64); | |
2077 | BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64); | |
74493f7a | 2078 | |
5d4f98a2 YZ |
2079 | BTRFS_SETGET_FUNCS(extent_refs_v0, struct btrfs_extent_item_v0, refs, 32); |
2080 | ||
2081 | ||
2082 | BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8); | |
2083 | ||
2084 | static inline void btrfs_tree_block_key(struct extent_buffer *eb, | |
2085 | struct btrfs_tree_block_info *item, | |
2086 | struct btrfs_disk_key *key) | |
2087 | { | |
2088 | read_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
2089 | } | |
2090 | ||
2091 | static inline void btrfs_set_tree_block_key(struct extent_buffer *eb, | |
2092 | struct btrfs_tree_block_info *item, | |
2093 | struct btrfs_disk_key *key) | |
2094 | { | |
2095 | write_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
2096 | } | |
e20d96d6 | 2097 | |
5d4f98a2 YZ |
2098 | BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref, |
2099 | root, 64); | |
2100 | BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref, | |
2101 | objectid, 64); | |
2102 | BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref, | |
2103 | offset, 64); | |
2104 | BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref, | |
2105 | count, 32); | |
2106 | ||
2107 | BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref, | |
2108 | count, 32); | |
2109 | ||
2110 | BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref, | |
2111 | type, 8); | |
2112 | BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref, | |
2113 | offset, 64); | |
2114 | ||
2115 | static inline u32 btrfs_extent_inline_ref_size(int type) | |
2116 | { | |
2117 | if (type == BTRFS_TREE_BLOCK_REF_KEY || | |
2118 | type == BTRFS_SHARED_BLOCK_REF_KEY) | |
2119 | return sizeof(struct btrfs_extent_inline_ref); | |
2120 | if (type == BTRFS_SHARED_DATA_REF_KEY) | |
2121 | return sizeof(struct btrfs_shared_data_ref) + | |
2122 | sizeof(struct btrfs_extent_inline_ref); | |
2123 | if (type == BTRFS_EXTENT_DATA_REF_KEY) | |
2124 | return sizeof(struct btrfs_extent_data_ref) + | |
2125 | offsetof(struct btrfs_extent_inline_ref, offset); | |
2126 | BUG(); | |
2127 | return 0; | |
2128 | } | |
2129 | ||
2130 | BTRFS_SETGET_FUNCS(ref_root_v0, struct btrfs_extent_ref_v0, root, 64); | |
2131 | BTRFS_SETGET_FUNCS(ref_generation_v0, struct btrfs_extent_ref_v0, | |
2132 | generation, 64); | |
2133 | BTRFS_SETGET_FUNCS(ref_objectid_v0, struct btrfs_extent_ref_v0, objectid, 64); | |
2134 | BTRFS_SETGET_FUNCS(ref_count_v0, struct btrfs_extent_ref_v0, count, 32); | |
e20d96d6 | 2135 | |
5f39d397 CM |
2136 | /* struct btrfs_node */ |
2137 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
74493f7a | 2138 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
e20d96d6 | 2139 | |
5f39d397 | 2140 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
cf27e1ee | 2141 | { |
5f39d397 CM |
2142 | unsigned long ptr; |
2143 | ptr = offsetof(struct btrfs_node, ptrs) + | |
2144 | sizeof(struct btrfs_key_ptr) * nr; | |
2145 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
cf27e1ee CM |
2146 | } |
2147 | ||
5f39d397 CM |
2148 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
2149 | int nr, u64 val) | |
cf27e1ee | 2150 | { |
5f39d397 CM |
2151 | unsigned long ptr; |
2152 | ptr = offsetof(struct btrfs_node, ptrs) + | |
2153 | sizeof(struct btrfs_key_ptr) * nr; | |
2154 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
cf27e1ee CM |
2155 | } |
2156 | ||
74493f7a CM |
2157 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
2158 | { | |
2159 | unsigned long ptr; | |
2160 | ptr = offsetof(struct btrfs_node, ptrs) + | |
2161 | sizeof(struct btrfs_key_ptr) * nr; | |
2162 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
2163 | } | |
2164 | ||
2165 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, | |
2166 | int nr, u64 val) | |
2167 | { | |
2168 | unsigned long ptr; | |
2169 | ptr = offsetof(struct btrfs_node, ptrs) + | |
2170 | sizeof(struct btrfs_key_ptr) * nr; | |
2171 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
2172 | } | |
2173 | ||
810191ff | 2174 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
4d775673 | 2175 | { |
5f39d397 CM |
2176 | return offsetof(struct btrfs_node, ptrs) + |
2177 | sizeof(struct btrfs_key_ptr) * nr; | |
4d775673 CM |
2178 | } |
2179 | ||
e644d021 CM |
2180 | void btrfs_node_key(struct extent_buffer *eb, |
2181 | struct btrfs_disk_key *disk_key, int nr); | |
2182 | ||
5f39d397 CM |
2183 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
2184 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f8a0c | 2185 | { |
5f39d397 CM |
2186 | unsigned long ptr; |
2187 | ptr = btrfs_node_key_ptr_offset(nr); | |
2188 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
2189 | struct btrfs_key_ptr, key, disk_key); | |
1d4f8a0c CM |
2190 | } |
2191 | ||
5f39d397 CM |
2192 | /* struct btrfs_item */ |
2193 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); | |
2194 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); | |
4d775673 | 2195 | |
5f39d397 | 2196 | static inline unsigned long btrfs_item_nr_offset(int nr) |
1d4f8a0c | 2197 | { |
5f39d397 CM |
2198 | return offsetof(struct btrfs_leaf, items) + |
2199 | sizeof(struct btrfs_item) * nr; | |
1d4f8a0c CM |
2200 | } |
2201 | ||
5f39d397 CM |
2202 | static inline struct btrfs_item *btrfs_item_nr(struct extent_buffer *eb, |
2203 | int nr) | |
0783fcfc | 2204 | { |
5f39d397 | 2205 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
0783fcfc CM |
2206 | } |
2207 | ||
5f39d397 CM |
2208 | static inline u32 btrfs_item_end(struct extent_buffer *eb, |
2209 | struct btrfs_item *item) | |
0783fcfc | 2210 | { |
5f39d397 | 2211 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
0783fcfc CM |
2212 | } |
2213 | ||
5f39d397 | 2214 | static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 2215 | { |
5f39d397 | 2216 | return btrfs_item_end(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
2217 | } |
2218 | ||
5f39d397 | 2219 | static inline u32 btrfs_item_offset_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 2220 | { |
5f39d397 | 2221 | return btrfs_item_offset(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
2222 | } |
2223 | ||
5f39d397 | 2224 | static inline u32 btrfs_item_size_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 2225 | { |
5f39d397 | 2226 | return btrfs_item_size(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
2227 | } |
2228 | ||
5f39d397 CM |
2229 | static inline void btrfs_item_key(struct extent_buffer *eb, |
2230 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 2231 | { |
5f39d397 CM |
2232 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
2233 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
2234 | } |
2235 | ||
5f39d397 CM |
2236 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
2237 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 2238 | { |
5f39d397 CM |
2239 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
2240 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
2241 | } |
2242 | ||
e02119d5 CM |
2243 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
2244 | ||
0660b5af CM |
2245 | /* |
2246 | * struct btrfs_root_ref | |
2247 | */ | |
2248 | BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64); | |
2249 | BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64); | |
2250 | BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16); | |
2251 | ||
5f39d397 | 2252 | /* struct btrfs_dir_item */ |
5103e947 | 2253 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
5f39d397 CM |
2254 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
2255 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); | |
e02119d5 | 2256 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
1d4f6404 | 2257 | |
5f39d397 CM |
2258 | static inline void btrfs_dir_item_key(struct extent_buffer *eb, |
2259 | struct btrfs_dir_item *item, | |
2260 | struct btrfs_disk_key *key) | |
1d4f6404 | 2261 | { |
5f39d397 | 2262 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
1d4f6404 CM |
2263 | } |
2264 | ||
5f39d397 CM |
2265 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
2266 | struct btrfs_dir_item *item, | |
2267 | struct btrfs_disk_key *key) | |
a8a2ee0c | 2268 | { |
5f39d397 | 2269 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
a8a2ee0c CM |
2270 | } |
2271 | ||
0af3d00b JB |
2272 | BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header, |
2273 | num_entries, 64); | |
2274 | BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header, | |
2275 | num_bitmaps, 64); | |
2276 | BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header, | |
2277 | generation, 64); | |
2278 | ||
2279 | static inline void btrfs_free_space_key(struct extent_buffer *eb, | |
2280 | struct btrfs_free_space_header *h, | |
2281 | struct btrfs_disk_key *key) | |
2282 | { | |
2283 | read_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
2284 | } | |
2285 | ||
2286 | static inline void btrfs_set_free_space_key(struct extent_buffer *eb, | |
2287 | struct btrfs_free_space_header *h, | |
2288 | struct btrfs_disk_key *key) | |
2289 | { | |
2290 | write_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
2291 | } | |
2292 | ||
5f39d397 CM |
2293 | /* struct btrfs_disk_key */ |
2294 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, | |
2295 | objectid, 64); | |
2296 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
2297 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
1d4f6404 | 2298 | |
e2fa7227 CM |
2299 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
2300 | struct btrfs_disk_key *disk) | |
2301 | { | |
2302 | cpu->offset = le64_to_cpu(disk->offset); | |
5f39d397 | 2303 | cpu->type = disk->type; |
e2fa7227 CM |
2304 | cpu->objectid = le64_to_cpu(disk->objectid); |
2305 | } | |
2306 | ||
2307 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
2308 | struct btrfs_key *cpu) | |
2309 | { | |
2310 | disk->offset = cpu_to_le64(cpu->offset); | |
5f39d397 | 2311 | disk->type = cpu->type; |
e2fa7227 CM |
2312 | disk->objectid = cpu_to_le64(cpu->objectid); |
2313 | } | |
2314 | ||
5f39d397 CM |
2315 | static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb, |
2316 | struct btrfs_key *key, int nr) | |
7f5c1516 | 2317 | { |
5f39d397 CM |
2318 | struct btrfs_disk_key disk_key; |
2319 | btrfs_node_key(eb, &disk_key, nr); | |
2320 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
2321 | } |
2322 | ||
5f39d397 CM |
2323 | static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb, |
2324 | struct btrfs_key *key, int nr) | |
7f5c1516 | 2325 | { |
5f39d397 CM |
2326 | struct btrfs_disk_key disk_key; |
2327 | btrfs_item_key(eb, &disk_key, nr); | |
2328 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
2329 | } |
2330 | ||
5f39d397 CM |
2331 | static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb, |
2332 | struct btrfs_dir_item *item, | |
2333 | struct btrfs_key *key) | |
4d775673 | 2334 | { |
5f39d397 CM |
2335 | struct btrfs_disk_key disk_key; |
2336 | btrfs_dir_item_key(eb, item, &disk_key); | |
2337 | btrfs_disk_key_to_cpu(key, &disk_key); | |
4d775673 CM |
2338 | } |
2339 | ||
58176a96 | 2340 | |
5f39d397 | 2341 | static inline u8 btrfs_key_type(struct btrfs_key *key) |
3768f368 | 2342 | { |
5f39d397 | 2343 | return key->type; |
3768f368 CM |
2344 | } |
2345 | ||
5f39d397 | 2346 | static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val) |
3768f368 | 2347 | { |
5f39d397 | 2348 | key->type = val; |
3768f368 CM |
2349 | } |
2350 | ||
5f39d397 | 2351 | /* struct btrfs_header */ |
db94535d | 2352 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
5f39d397 CM |
2353 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
2354 | generation, 64); | |
2355 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
2356 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
63b10fc4 | 2357 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
5f39d397 | 2358 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
0f7d52f4 | 2359 | |
63b10fc4 CM |
2360 | static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag) |
2361 | { | |
2362 | return (btrfs_header_flags(eb) & flag) == flag; | |
2363 | } | |
2364 | ||
2365 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) | |
2366 | { | |
2367 | u64 flags = btrfs_header_flags(eb); | |
2368 | btrfs_set_header_flags(eb, flags | flag); | |
2369 | return (flags & flag) == flag; | |
2370 | } | |
2371 | ||
2372 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) | |
2373 | { | |
2374 | u64 flags = btrfs_header_flags(eb); | |
2375 | btrfs_set_header_flags(eb, flags & ~flag); | |
2376 | return (flags & flag) == flag; | |
2377 | } | |
2378 | ||
5d4f98a2 YZ |
2379 | static inline int btrfs_header_backref_rev(struct extent_buffer *eb) |
2380 | { | |
2381 | u64 flags = btrfs_header_flags(eb); | |
2382 | return flags >> BTRFS_BACKREF_REV_SHIFT; | |
2383 | } | |
2384 | ||
2385 | static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb, | |
2386 | int rev) | |
2387 | { | |
2388 | u64 flags = btrfs_header_flags(eb); | |
2389 | flags &= ~BTRFS_BACKREF_REV_MASK; | |
2390 | flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT; | |
2391 | btrfs_set_header_flags(eb, flags); | |
2392 | } | |
2393 | ||
5f39d397 | 2394 | static inline u8 *btrfs_header_fsid(struct extent_buffer *eb) |
0f7d52f4 | 2395 | { |
5f39d397 CM |
2396 | unsigned long ptr = offsetof(struct btrfs_header, fsid); |
2397 | return (u8 *)ptr; | |
0f7d52f4 CM |
2398 | } |
2399 | ||
e17cade2 CM |
2400 | static inline u8 *btrfs_header_chunk_tree_uuid(struct extent_buffer *eb) |
2401 | { | |
2402 | unsigned long ptr = offsetof(struct btrfs_header, chunk_tree_uuid); | |
2403 | return (u8 *)ptr; | |
2404 | } | |
2405 | ||
5f39d397 | 2406 | static inline int btrfs_is_leaf(struct extent_buffer *eb) |
3768f368 | 2407 | { |
d397712b | 2408 | return btrfs_header_level(eb) == 0; |
3768f368 CM |
2409 | } |
2410 | ||
5f39d397 | 2411 | /* struct btrfs_root_item */ |
84234f3a YZ |
2412 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, |
2413 | generation, 64); | |
5f39d397 | 2414 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); |
db94535d CM |
2415 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
2416 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
3768f368 | 2417 | |
84234f3a YZ |
2418 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, |
2419 | generation, 64); | |
db94535d CM |
2420 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
2421 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); | |
5f39d397 CM |
2422 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
2423 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
f2b636e8 | 2424 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64); |
db94535d CM |
2425 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
2426 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
80ff3856 YZ |
2427 | BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item, |
2428 | last_snapshot, 64); | |
8ea05e3a AB |
2429 | BTRFS_SETGET_STACK_FUNCS(root_generation_v2, struct btrfs_root_item, |
2430 | generation_v2, 64); | |
2431 | BTRFS_SETGET_STACK_FUNCS(root_ctransid, struct btrfs_root_item, | |
2432 | ctransid, 64); | |
2433 | BTRFS_SETGET_STACK_FUNCS(root_otransid, struct btrfs_root_item, | |
2434 | otransid, 64); | |
2435 | BTRFS_SETGET_STACK_FUNCS(root_stransid, struct btrfs_root_item, | |
2436 | stransid, 64); | |
2437 | BTRFS_SETGET_STACK_FUNCS(root_rtransid, struct btrfs_root_item, | |
2438 | rtransid, 64); | |
123abc88 | 2439 | |
b83cc969 LZ |
2440 | static inline bool btrfs_root_readonly(struct btrfs_root *root) |
2441 | { | |
6ed3cf2c | 2442 | return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_RDONLY)) != 0; |
b83cc969 LZ |
2443 | } |
2444 | ||
af31f5e5 CM |
2445 | /* struct btrfs_root_backup */ |
2446 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root, struct btrfs_root_backup, | |
2447 | tree_root, 64); | |
2448 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_gen, struct btrfs_root_backup, | |
2449 | tree_root_gen, 64); | |
2450 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_level, struct btrfs_root_backup, | |
2451 | tree_root_level, 8); | |
2452 | ||
2453 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root, struct btrfs_root_backup, | |
2454 | chunk_root, 64); | |
2455 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_gen, struct btrfs_root_backup, | |
2456 | chunk_root_gen, 64); | |
2457 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_level, struct btrfs_root_backup, | |
2458 | chunk_root_level, 8); | |
2459 | ||
2460 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root, struct btrfs_root_backup, | |
2461 | extent_root, 64); | |
2462 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_gen, struct btrfs_root_backup, | |
2463 | extent_root_gen, 64); | |
2464 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_level, struct btrfs_root_backup, | |
2465 | extent_root_level, 8); | |
2466 | ||
2467 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root, struct btrfs_root_backup, | |
2468 | fs_root, 64); | |
2469 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_gen, struct btrfs_root_backup, | |
2470 | fs_root_gen, 64); | |
2471 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_level, struct btrfs_root_backup, | |
2472 | fs_root_level, 8); | |
2473 | ||
2474 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root, struct btrfs_root_backup, | |
2475 | dev_root, 64); | |
2476 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_gen, struct btrfs_root_backup, | |
2477 | dev_root_gen, 64); | |
2478 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_level, struct btrfs_root_backup, | |
2479 | dev_root_level, 8); | |
2480 | ||
2481 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root, struct btrfs_root_backup, | |
2482 | csum_root, 64); | |
2483 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_gen, struct btrfs_root_backup, | |
2484 | csum_root_gen, 64); | |
2485 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_level, struct btrfs_root_backup, | |
2486 | csum_root_level, 8); | |
2487 | BTRFS_SETGET_STACK_FUNCS(backup_total_bytes, struct btrfs_root_backup, | |
2488 | total_bytes, 64); | |
2489 | BTRFS_SETGET_STACK_FUNCS(backup_bytes_used, struct btrfs_root_backup, | |
2490 | bytes_used, 64); | |
2491 | BTRFS_SETGET_STACK_FUNCS(backup_num_devices, struct btrfs_root_backup, | |
2492 | num_devices, 64); | |
2493 | ||
0940ebf6 ID |
2494 | /* struct btrfs_balance_item */ |
2495 | BTRFS_SETGET_FUNCS(balance_flags, struct btrfs_balance_item, flags, 64); | |
607d432d | 2496 | |
0940ebf6 ID |
2497 | static inline void btrfs_balance_data(struct extent_buffer *eb, |
2498 | struct btrfs_balance_item *bi, | |
2499 | struct btrfs_disk_balance_args *ba) | |
2500 | { | |
2501 | read_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2502 | } | |
2503 | ||
2504 | static inline void btrfs_set_balance_data(struct extent_buffer *eb, | |
2505 | struct btrfs_balance_item *bi, | |
2506 | struct btrfs_disk_balance_args *ba) | |
2507 | { | |
2508 | write_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2509 | } | |
2510 | ||
2511 | static inline void btrfs_balance_meta(struct extent_buffer *eb, | |
2512 | struct btrfs_balance_item *bi, | |
2513 | struct btrfs_disk_balance_args *ba) | |
2514 | { | |
2515 | read_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2516 | } | |
2517 | ||
2518 | static inline void btrfs_set_balance_meta(struct extent_buffer *eb, | |
2519 | struct btrfs_balance_item *bi, | |
2520 | struct btrfs_disk_balance_args *ba) | |
2521 | { | |
2522 | write_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2523 | } | |
2524 | ||
2525 | static inline void btrfs_balance_sys(struct extent_buffer *eb, | |
2526 | struct btrfs_balance_item *bi, | |
2527 | struct btrfs_disk_balance_args *ba) | |
2528 | { | |
2529 | read_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2530 | } | |
2531 | ||
2532 | static inline void btrfs_set_balance_sys(struct extent_buffer *eb, | |
2533 | struct btrfs_balance_item *bi, | |
2534 | struct btrfs_disk_balance_args *ba) | |
2535 | { | |
2536 | write_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2537 | } | |
2538 | ||
2539 | static inline void | |
2540 | btrfs_disk_balance_args_to_cpu(struct btrfs_balance_args *cpu, | |
2541 | struct btrfs_disk_balance_args *disk) | |
2542 | { | |
2543 | memset(cpu, 0, sizeof(*cpu)); | |
2544 | ||
2545 | cpu->profiles = le64_to_cpu(disk->profiles); | |
2546 | cpu->usage = le64_to_cpu(disk->usage); | |
2547 | cpu->devid = le64_to_cpu(disk->devid); | |
2548 | cpu->pstart = le64_to_cpu(disk->pstart); | |
2549 | cpu->pend = le64_to_cpu(disk->pend); | |
2550 | cpu->vstart = le64_to_cpu(disk->vstart); | |
2551 | cpu->vend = le64_to_cpu(disk->vend); | |
2552 | cpu->target = le64_to_cpu(disk->target); | |
2553 | cpu->flags = le64_to_cpu(disk->flags); | |
2554 | } | |
2555 | ||
2556 | static inline void | |
2557 | btrfs_cpu_balance_args_to_disk(struct btrfs_disk_balance_args *disk, | |
2558 | struct btrfs_balance_args *cpu) | |
2559 | { | |
2560 | memset(disk, 0, sizeof(*disk)); | |
2561 | ||
2562 | disk->profiles = cpu_to_le64(cpu->profiles); | |
2563 | disk->usage = cpu_to_le64(cpu->usage); | |
2564 | disk->devid = cpu_to_le64(cpu->devid); | |
2565 | disk->pstart = cpu_to_le64(cpu->pstart); | |
2566 | disk->pend = cpu_to_le64(cpu->pend); | |
2567 | disk->vstart = cpu_to_le64(cpu->vstart); | |
2568 | disk->vend = cpu_to_le64(cpu->vend); | |
2569 | disk->target = cpu_to_le64(cpu->target); | |
2570 | disk->flags = cpu_to_le64(cpu->flags); | |
2571 | } | |
2572 | ||
2573 | /* struct btrfs_super_block */ | |
db94535d | 2574 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
a061fc8d | 2575 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
5f39d397 CM |
2576 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
2577 | generation, 64); | |
2578 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
0b86a832 CM |
2579 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
2580 | struct btrfs_super_block, sys_chunk_array_size, 32); | |
84234f3a YZ |
2581 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, |
2582 | struct btrfs_super_block, chunk_root_generation, 64); | |
db94535d CM |
2583 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
2584 | root_level, 8); | |
0b86a832 CM |
2585 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
2586 | chunk_root, 64); | |
2587 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, | |
e02119d5 CM |
2588 | chunk_root_level, 8); |
2589 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, | |
2590 | log_root, 64); | |
c3027eb5 CM |
2591 | BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block, |
2592 | log_root_transid, 64); | |
e02119d5 CM |
2593 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, |
2594 | log_root_level, 8); | |
db94535d CM |
2595 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
2596 | total_bytes, 64); | |
2597 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
2598 | bytes_used, 64); | |
5f39d397 CM |
2599 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
2600 | sectorsize, 32); | |
2601 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
2602 | nodesize, 32); | |
2603 | BTRFS_SETGET_STACK_FUNCS(super_leafsize, struct btrfs_super_block, | |
2604 | leafsize, 32); | |
87ee04eb CM |
2605 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
2606 | stripesize, 32); | |
5f39d397 CM |
2607 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
2608 | root_dir_objectid, 64); | |
8a4b83cc CM |
2609 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
2610 | num_devices, 64); | |
f2b636e8 JB |
2611 | BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block, |
2612 | compat_flags, 64); | |
2613 | BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block, | |
12534832 | 2614 | compat_ro_flags, 64); |
f2b636e8 JB |
2615 | BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block, |
2616 | incompat_flags, 64); | |
607d432d JB |
2617 | BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block, |
2618 | csum_type, 16); | |
0af3d00b JB |
2619 | BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block, |
2620 | cache_generation, 64); | |
607d432d JB |
2621 | |
2622 | static inline int btrfs_super_csum_size(struct btrfs_super_block *s) | |
2623 | { | |
2624 | int t = btrfs_super_csum_type(s); | |
2625 | BUG_ON(t >= ARRAY_SIZE(btrfs_csum_sizes)); | |
2626 | return btrfs_csum_sizes[t]; | |
2627 | } | |
2e635a27 | 2628 | |
5f39d397 | 2629 | static inline unsigned long btrfs_leaf_data(struct extent_buffer *l) |
2e635a27 | 2630 | { |
5f39d397 | 2631 | return offsetof(struct btrfs_leaf, items); |
2e635a27 CM |
2632 | } |
2633 | ||
5f39d397 CM |
2634 | /* struct btrfs_file_extent_item */ |
2635 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); | |
9f5fae2f | 2636 | |
d397712b CM |
2637 | static inline unsigned long |
2638 | btrfs_file_extent_inline_start(struct btrfs_file_extent_item *e) | |
236454df | 2639 | { |
5f39d397 | 2640 | unsigned long offset = (unsigned long)e; |
db94535d | 2641 | offset += offsetof(struct btrfs_file_extent_item, disk_bytenr); |
5f39d397 | 2642 | return offset; |
236454df CM |
2643 | } |
2644 | ||
2645 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
2646 | { | |
db94535d | 2647 | return offsetof(struct btrfs_file_extent_item, disk_bytenr) + datasize; |
9f5fae2f CM |
2648 | } |
2649 | ||
db94535d CM |
2650 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
2651 | disk_bytenr, 64); | |
5f39d397 CM |
2652 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
2653 | generation, 64); | |
db94535d CM |
2654 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
2655 | disk_num_bytes, 64); | |
5f39d397 CM |
2656 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
2657 | offset, 64); | |
db94535d CM |
2658 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
2659 | num_bytes, 64); | |
c8b97818 CM |
2660 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, |
2661 | ram_bytes, 64); | |
2662 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, | |
2663 | compression, 8); | |
2664 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, | |
2665 | encryption, 8); | |
2666 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, | |
2667 | other_encoding, 16); | |
2668 | ||
2669 | /* this returns the number of file bytes represented by the inline item. | |
2670 | * If an item is compressed, this is the uncompressed size | |
2671 | */ | |
2672 | static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb, | |
2673 | struct btrfs_file_extent_item *e) | |
2674 | { | |
2675 | return btrfs_file_extent_ram_bytes(eb, e); | |
2676 | } | |
2677 | ||
2678 | /* | |
2679 | * this returns the number of bytes used by the item on disk, minus the | |
2680 | * size of any extent headers. If a file is compressed on disk, this is | |
2681 | * the compressed size | |
2682 | */ | |
2683 | static inline u32 btrfs_file_extent_inline_item_len(struct extent_buffer *eb, | |
2684 | struct btrfs_item *e) | |
2685 | { | |
2686 | unsigned long offset; | |
2687 | offset = offsetof(struct btrfs_file_extent_item, disk_bytenr); | |
2688 | return btrfs_item_size(eb, e) - offset; | |
2689 | } | |
9f5fae2f | 2690 | |
733f4fbb SB |
2691 | /* btrfs_dev_stats_item */ |
2692 | static inline u64 btrfs_dev_stats_value(struct extent_buffer *eb, | |
2693 | struct btrfs_dev_stats_item *ptr, | |
2694 | int index) | |
2695 | { | |
2696 | u64 val; | |
2697 | ||
2698 | read_extent_buffer(eb, &val, | |
2699 | offsetof(struct btrfs_dev_stats_item, values) + | |
2700 | ((unsigned long)ptr) + (index * sizeof(u64)), | |
2701 | sizeof(val)); | |
2702 | return val; | |
2703 | } | |
2704 | ||
2705 | static inline void btrfs_set_dev_stats_value(struct extent_buffer *eb, | |
2706 | struct btrfs_dev_stats_item *ptr, | |
2707 | int index, u64 val) | |
2708 | { | |
2709 | write_extent_buffer(eb, &val, | |
2710 | offsetof(struct btrfs_dev_stats_item, values) + | |
2711 | ((unsigned long)ptr) + (index * sizeof(u64)), | |
2712 | sizeof(val)); | |
2713 | } | |
2714 | ||
630dc772 AJ |
2715 | /* btrfs_qgroup_status_item */ |
2716 | BTRFS_SETGET_FUNCS(qgroup_status_generation, struct btrfs_qgroup_status_item, | |
2717 | generation, 64); | |
2718 | BTRFS_SETGET_FUNCS(qgroup_status_version, struct btrfs_qgroup_status_item, | |
2719 | version, 64); | |
2720 | BTRFS_SETGET_FUNCS(qgroup_status_flags, struct btrfs_qgroup_status_item, | |
2721 | flags, 64); | |
2722 | BTRFS_SETGET_FUNCS(qgroup_status_scan, struct btrfs_qgroup_status_item, | |
2723 | scan, 64); | |
2724 | ||
2725 | /* btrfs_qgroup_info_item */ | |
2726 | BTRFS_SETGET_FUNCS(qgroup_info_generation, struct btrfs_qgroup_info_item, | |
2727 | generation, 64); | |
2728 | BTRFS_SETGET_FUNCS(qgroup_info_rfer, struct btrfs_qgroup_info_item, rfer, 64); | |
2729 | BTRFS_SETGET_FUNCS(qgroup_info_rfer_cmpr, struct btrfs_qgroup_info_item, | |
2730 | rfer_cmpr, 64); | |
2731 | BTRFS_SETGET_FUNCS(qgroup_info_excl, struct btrfs_qgroup_info_item, excl, 64); | |
2732 | BTRFS_SETGET_FUNCS(qgroup_info_excl_cmpr, struct btrfs_qgroup_info_item, | |
2733 | excl_cmpr, 64); | |
2734 | ||
2735 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_generation, | |
2736 | struct btrfs_qgroup_info_item, generation, 64); | |
2737 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer, struct btrfs_qgroup_info_item, | |
2738 | rfer, 64); | |
2739 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer_cmpr, | |
2740 | struct btrfs_qgroup_info_item, rfer_cmpr, 64); | |
2741 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl, struct btrfs_qgroup_info_item, | |
2742 | excl, 64); | |
2743 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl_cmpr, | |
2744 | struct btrfs_qgroup_info_item, excl_cmpr, 64); | |
2745 | ||
2746 | /* btrfs_qgroup_limit_item */ | |
2747 | BTRFS_SETGET_FUNCS(qgroup_limit_flags, struct btrfs_qgroup_limit_item, | |
2748 | flags, 64); | |
2749 | BTRFS_SETGET_FUNCS(qgroup_limit_max_rfer, struct btrfs_qgroup_limit_item, | |
2750 | max_rfer, 64); | |
2751 | BTRFS_SETGET_FUNCS(qgroup_limit_max_excl, struct btrfs_qgroup_limit_item, | |
2752 | max_excl, 64); | |
2753 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_rfer, struct btrfs_qgroup_limit_item, | |
2754 | rsv_rfer, 64); | |
2755 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_excl, struct btrfs_qgroup_limit_item, | |
2756 | rsv_excl, 64); | |
2757 | ||
815745cf | 2758 | static inline struct btrfs_fs_info *btrfs_sb(struct super_block *sb) |
e20d96d6 CM |
2759 | { |
2760 | return sb->s_fs_info; | |
2761 | } | |
2762 | ||
d397712b CM |
2763 | static inline u32 btrfs_level_size(struct btrfs_root *root, int level) |
2764 | { | |
db94535d CM |
2765 | if (level == 0) |
2766 | return root->leafsize; | |
2767 | return root->nodesize; | |
2768 | } | |
2769 | ||
4beb1b8b CM |
2770 | /* helper function to cast into the data area of the leaf. */ |
2771 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 | 2772 | ((type *)(btrfs_leaf_data(leaf) + \ |
5f39d397 CM |
2773 | btrfs_item_offset_nr(leaf, slot))) |
2774 | ||
2775 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
2776 | ((unsigned long)(btrfs_leaf_data(leaf) + \ | |
2777 | btrfs_item_offset_nr(leaf, slot))) | |
4beb1b8b | 2778 | |
2b1f55b0 CM |
2779 | static inline struct dentry *fdentry(struct file *file) |
2780 | { | |
6da6abae | 2781 | return file->f_path.dentry; |
6da6abae CM |
2782 | } |
2783 | ||
67377734 JB |
2784 | static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info) |
2785 | { | |
2786 | return ((space_info->flags & BTRFS_BLOCK_GROUP_METADATA) && | |
2787 | (space_info->flags & BTRFS_BLOCK_GROUP_DATA)); | |
2788 | } | |
2789 | ||
3b16a4e3 JB |
2790 | static inline gfp_t btrfs_alloc_write_mask(struct address_space *mapping) |
2791 | { | |
2792 | return mapping_gfp_mask(mapping) & ~__GFP_FS; | |
2793 | } | |
2794 | ||
b18c6685 | 2795 | /* extent-tree.c */ |
16cdcec7 | 2796 | static inline u64 btrfs_calc_trans_metadata_size(struct btrfs_root *root, |
9e0baf60 | 2797 | unsigned num_items) |
16cdcec7 MX |
2798 | { |
2799 | return (root->leafsize + root->nodesize * (BTRFS_MAX_LEVEL - 1)) * | |
2800 | 3 * num_items; | |
07127184 JB |
2801 | } |
2802 | ||
2803 | /* | |
2804 | * Doing a truncate won't result in new nodes or leaves, just what we need for | |
2805 | * COW. | |
2806 | */ | |
2807 | static inline u64 btrfs_calc_trunc_metadata_size(struct btrfs_root *root, | |
2808 | unsigned num_items) | |
2809 | { | |
2810 | return (root->leafsize + root->nodesize * (BTRFS_MAX_LEVEL - 1)) * | |
2811 | num_items; | |
16cdcec7 MX |
2812 | } |
2813 | ||
fa9c0d79 | 2814 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
56bec294 CM |
2815 | int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, |
2816 | struct btrfs_root *root, unsigned long count); | |
31840ae1 | 2817 | int btrfs_lookup_extent(struct btrfs_root *root, u64 start, u64 len); |
a22285a6 YZ |
2818 | int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans, |
2819 | struct btrfs_root *root, u64 bytenr, | |
2820 | u64 num_bytes, u64 *refs, u64 *flags); | |
11833d66 YZ |
2821 | int btrfs_pin_extent(struct btrfs_root *root, |
2822 | u64 bytenr, u64 num, int reserved); | |
e688b725 CM |
2823 | int btrfs_pin_extent_for_log_replay(struct btrfs_trans_handle *trans, |
2824 | struct btrfs_root *root, | |
2825 | u64 bytenr, u64 num_bytes); | |
80ff3856 | 2826 | int btrfs_cross_ref_exist(struct btrfs_trans_handle *trans, |
5d4f98a2 YZ |
2827 | struct btrfs_root *root, |
2828 | u64 objectid, u64 offset, u64 bytenr); | |
d397712b CM |
2829 | struct btrfs_block_group_cache *btrfs_lookup_block_group( |
2830 | struct btrfs_fs_info *info, | |
2831 | u64 bytenr); | |
5d4f98a2 | 2832 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
d2fb3437 YZ |
2833 | u64 btrfs_find_block_group(struct btrfs_root *root, |
2834 | u64 search_start, u64 search_hint, int owner); | |
5f39d397 | 2835 | struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
5d4f98a2 YZ |
2836 | struct btrfs_root *root, u32 blocksize, |
2837 | u64 parent, u64 root_objectid, | |
2838 | struct btrfs_disk_key *key, int level, | |
5581a51a | 2839 | u64 hint, u64 empty_size); |
f0486c68 YZ |
2840 | void btrfs_free_tree_block(struct btrfs_trans_handle *trans, |
2841 | struct btrfs_root *root, | |
2842 | struct extent_buffer *buf, | |
5581a51a | 2843 | u64 parent, int last_ref); |
65b51a00 CM |
2844 | struct extent_buffer *btrfs_init_new_buffer(struct btrfs_trans_handle *trans, |
2845 | struct btrfs_root *root, | |
4008c04a CM |
2846 | u64 bytenr, u32 blocksize, |
2847 | int level); | |
5d4f98a2 YZ |
2848 | int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans, |
2849 | struct btrfs_root *root, | |
2850 | u64 root_objectid, u64 owner, | |
2851 | u64 offset, struct btrfs_key *ins); | |
2852 | int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans, | |
2853 | struct btrfs_root *root, | |
2854 | u64 root_objectid, u64 owner, u64 offset, | |
2855 | struct btrfs_key *ins); | |
e6dcd2dc CM |
2856 | int btrfs_reserve_extent(struct btrfs_trans_handle *trans, |
2857 | struct btrfs_root *root, | |
2858 | u64 num_bytes, u64 min_alloc_size, | |
2859 | u64 empty_size, u64 hint_byte, | |
81c9ad23 | 2860 | struct btrfs_key *ins, u64 data); |
e089f05c | 2861 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
66d7e7f0 | 2862 | struct extent_buffer *buf, int full_backref, int for_cow); |
5d4f98a2 | 2863 | int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
66d7e7f0 | 2864 | struct extent_buffer *buf, int full_backref, int for_cow); |
5d4f98a2 YZ |
2865 | int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans, |
2866 | struct btrfs_root *root, | |
2867 | u64 bytenr, u64 num_bytes, u64 flags, | |
2868 | int is_data); | |
31840ae1 ZY |
2869 | int btrfs_free_extent(struct btrfs_trans_handle *trans, |
2870 | struct btrfs_root *root, | |
66d7e7f0 AJ |
2871 | u64 bytenr, u64 num_bytes, u64 parent, u64 root_objectid, |
2872 | u64 owner, u64 offset, int for_cow); | |
5d4f98a2 | 2873 | |
65b51a00 | 2874 | int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len); |
e688b725 CM |
2875 | int btrfs_free_and_pin_reserved_extent(struct btrfs_root *root, |
2876 | u64 start, u64 len); | |
143bede5 JM |
2877 | void btrfs_prepare_extent_commit(struct btrfs_trans_handle *trans, |
2878 | struct btrfs_root *root); | |
ccd467d6 | 2879 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, |
11833d66 | 2880 | struct btrfs_root *root); |
b18c6685 | 2881 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
31840ae1 ZY |
2882 | struct btrfs_root *root, |
2883 | u64 bytenr, u64 num_bytes, u64 parent, | |
66d7e7f0 | 2884 | u64 root_objectid, u64 owner, u64 offset, int for_cow); |
5d4f98a2 | 2885 | |
9078a3e1 CM |
2886 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
2887 | struct btrfs_root *root); | |
d2fb3437 | 2888 | int btrfs_extent_readonly(struct btrfs_root *root, u64 bytenr); |
9078a3e1 CM |
2889 | int btrfs_free_block_groups(struct btrfs_fs_info *info); |
2890 | int btrfs_read_block_groups(struct btrfs_root *root); | |
ba1bf481 | 2891 | int btrfs_can_relocate(struct btrfs_root *root, u64 bytenr); |
0b86a832 CM |
2892 | int btrfs_make_block_group(struct btrfs_trans_handle *trans, |
2893 | struct btrfs_root *root, u64 bytes_used, | |
e17cade2 | 2894 | u64 type, u64 chunk_objectid, u64 chunk_offset, |
0b86a832 | 2895 | u64 size); |
1a40e23b ZY |
2896 | int btrfs_remove_block_group(struct btrfs_trans_handle *trans, |
2897 | struct btrfs_root *root, u64 group_start); | |
ea658bad JB |
2898 | void btrfs_create_pending_block_groups(struct btrfs_trans_handle *trans, |
2899 | struct btrfs_root *root); | |
2b82032c | 2900 | u64 btrfs_reduce_alloc_profile(struct btrfs_root *root, u64 flags); |
6d07bcec | 2901 | u64 btrfs_get_alloc_profile(struct btrfs_root *root, int data); |
4184ea7f | 2902 | void btrfs_clear_space_info_full(struct btrfs_fs_info *info); |
0ca1f7ce YZ |
2903 | int btrfs_check_data_free_space(struct inode *inode, u64 bytes); |
2904 | void btrfs_free_reserved_data_space(struct inode *inode, u64 bytes); | |
a22285a6 YZ |
2905 | void btrfs_trans_release_metadata(struct btrfs_trans_handle *trans, |
2906 | struct btrfs_root *root); | |
d68fc57b YZ |
2907 | int btrfs_orphan_reserve_metadata(struct btrfs_trans_handle *trans, |
2908 | struct inode *inode); | |
2909 | void btrfs_orphan_release_metadata(struct inode *inode); | |
a22285a6 YZ |
2910 | int btrfs_snap_reserve_metadata(struct btrfs_trans_handle *trans, |
2911 | struct btrfs_pending_snapshot *pending); | |
0ca1f7ce YZ |
2912 | int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes); |
2913 | void btrfs_delalloc_release_metadata(struct inode *inode, u64 num_bytes); | |
2914 | int btrfs_delalloc_reserve_space(struct inode *inode, u64 num_bytes); | |
2915 | void btrfs_delalloc_release_space(struct inode *inode, u64 num_bytes); | |
66d8f3dd MX |
2916 | void btrfs_init_block_rsv(struct btrfs_block_rsv *rsv, unsigned short type); |
2917 | struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_root *root, | |
2918 | unsigned short type); | |
f0486c68 YZ |
2919 | void btrfs_free_block_rsv(struct btrfs_root *root, |
2920 | struct btrfs_block_rsv *rsv); | |
4a92b1b8 | 2921 | int btrfs_block_rsv_add(struct btrfs_root *root, |
f0486c68 | 2922 | struct btrfs_block_rsv *block_rsv, |
8bb8ab2e | 2923 | u64 num_bytes); |
c06a0e12 JB |
2924 | int btrfs_block_rsv_add_noflush(struct btrfs_root *root, |
2925 | struct btrfs_block_rsv *block_rsv, | |
2926 | u64 num_bytes); | |
4a92b1b8 | 2927 | int btrfs_block_rsv_check(struct btrfs_root *root, |
36ba022a JB |
2928 | struct btrfs_block_rsv *block_rsv, int min_factor); |
2929 | int btrfs_block_rsv_refill(struct btrfs_root *root, | |
f0486c68 | 2930 | struct btrfs_block_rsv *block_rsv, |
36ba022a | 2931 | u64 min_reserved); |
aa38a711 MX |
2932 | int btrfs_block_rsv_refill_noflush(struct btrfs_root *root, |
2933 | struct btrfs_block_rsv *block_rsv, | |
2934 | u64 min_reserved); | |
f0486c68 YZ |
2935 | int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv, |
2936 | struct btrfs_block_rsv *dst_rsv, | |
2937 | u64 num_bytes); | |
2938 | void btrfs_block_rsv_release(struct btrfs_root *root, | |
2939 | struct btrfs_block_rsv *block_rsv, | |
2940 | u64 num_bytes); | |
2941 | int btrfs_set_block_group_ro(struct btrfs_root *root, | |
2942 | struct btrfs_block_group_cache *cache); | |
143bede5 JM |
2943 | void btrfs_set_block_group_rw(struct btrfs_root *root, |
2944 | struct btrfs_block_group_cache *cache); | |
0af3d00b | 2945 | void btrfs_put_block_group_cache(struct btrfs_fs_info *info); |
6d07bcec | 2946 | u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo); |
acce952b | 2947 | int btrfs_error_unpin_extent_range(struct btrfs_root *root, |
2948 | u64 start, u64 end); | |
2949 | int btrfs_error_discard_extent(struct btrfs_root *root, u64 bytenr, | |
5378e607 | 2950 | u64 num_bytes, u64 *actual_bytes); |
c87f08ca CM |
2951 | int btrfs_force_chunk_alloc(struct btrfs_trans_handle *trans, |
2952 | struct btrfs_root *root, u64 type); | |
f7039b1d | 2953 | int btrfs_trim_fs(struct btrfs_root *root, struct fstrim_range *range); |
acce952b | 2954 | |
c59021f8 | 2955 | int btrfs_init_space_info(struct btrfs_fs_info *fs_info); |
bed92eae AJ |
2956 | int btrfs_delayed_refs_qgroup_accounting(struct btrfs_trans_handle *trans, |
2957 | struct btrfs_fs_info *fs_info); | |
dee26a9f | 2958 | /* ctree.c */ |
5d4f98a2 YZ |
2959 | int btrfs_bin_search(struct extent_buffer *eb, struct btrfs_key *key, |
2960 | int level, int *slot); | |
2961 | int btrfs_comp_cpu_keys(struct btrfs_key *k1, struct btrfs_key *k2); | |
0b86a832 CM |
2962 | int btrfs_previous_item(struct btrfs_root *root, |
2963 | struct btrfs_path *path, u64 min_objectid, | |
2964 | int type); | |
143bede5 JM |
2965 | void btrfs_set_item_key_safe(struct btrfs_trans_handle *trans, |
2966 | struct btrfs_root *root, struct btrfs_path *path, | |
2967 | struct btrfs_key *new_key); | |
925baedd CM |
2968 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); |
2969 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); | |
e7a84565 | 2970 | int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path, |
3f157a2f CM |
2971 | struct btrfs_key *key, int lowest_level, |
2972 | int cache_only, u64 min_trans); | |
2973 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, | |
e02119d5 | 2974 | struct btrfs_key *max_key, |
3f157a2f CM |
2975 | struct btrfs_path *path, int cache_only, |
2976 | u64 min_trans); | |
7069830a AB |
2977 | enum btrfs_compare_tree_result { |
2978 | BTRFS_COMPARE_TREE_NEW, | |
2979 | BTRFS_COMPARE_TREE_DELETED, | |
2980 | BTRFS_COMPARE_TREE_CHANGED, | |
2981 | }; | |
2982 | typedef int (*btrfs_changed_cb_t)(struct btrfs_root *left_root, | |
2983 | struct btrfs_root *right_root, | |
2984 | struct btrfs_path *left_path, | |
2985 | struct btrfs_path *right_path, | |
2986 | struct btrfs_key *key, | |
2987 | enum btrfs_compare_tree_result result, | |
2988 | void *ctx); | |
2989 | int btrfs_compare_trees(struct btrfs_root *left_root, | |
2990 | struct btrfs_root *right_root, | |
2991 | btrfs_changed_cb_t cb, void *ctx); | |
5f39d397 CM |
2992 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
2993 | struct btrfs_root *root, struct extent_buffer *buf, | |
2994 | struct extent_buffer *parent, int parent_slot, | |
9fa8cfe7 | 2995 | struct extent_buffer **cow_ret); |
be20aa9d CM |
2996 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
2997 | struct btrfs_root *root, | |
2998 | struct extent_buffer *buf, | |
2999 | struct extent_buffer **cow_ret, u64 new_root_objectid); | |
5d4f98a2 YZ |
3000 | int btrfs_block_can_be_shared(struct btrfs_root *root, |
3001 | struct extent_buffer *buf); | |
143bede5 JM |
3002 | void btrfs_extend_item(struct btrfs_trans_handle *trans, |
3003 | struct btrfs_root *root, struct btrfs_path *path, | |
3004 | u32 data_size); | |
3005 | void btrfs_truncate_item(struct btrfs_trans_handle *trans, | |
3006 | struct btrfs_root *root, | |
3007 | struct btrfs_path *path, | |
3008 | u32 new_size, int from_end); | |
459931ec CM |
3009 | int btrfs_split_item(struct btrfs_trans_handle *trans, |
3010 | struct btrfs_root *root, | |
3011 | struct btrfs_path *path, | |
3012 | struct btrfs_key *new_key, | |
3013 | unsigned long split_offset); | |
ad48fd75 YZ |
3014 | int btrfs_duplicate_item(struct btrfs_trans_handle *trans, |
3015 | struct btrfs_root *root, | |
3016 | struct btrfs_path *path, | |
3017 | struct btrfs_key *new_key); | |
e089f05c CM |
3018 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
3019 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
3020 | ins_len, int cow); | |
5d9e75c4 JS |
3021 | int btrfs_search_old_slot(struct btrfs_root *root, struct btrfs_key *key, |
3022 | struct btrfs_path *p, u64 time_seq); | |
2f38b3e1 AJ |
3023 | int btrfs_search_slot_for_read(struct btrfs_root *root, |
3024 | struct btrfs_key *key, struct btrfs_path *p, | |
3025 | int find_higher, int return_any); | |
6702ed49 | 3026 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
5f39d397 | 3027 | struct btrfs_root *root, struct extent_buffer *parent, |
a6b6e75e CM |
3028 | int start_slot, int cache_only, u64 *last_ret, |
3029 | struct btrfs_key *progress); | |
b3b4aa74 | 3030 | void btrfs_release_path(struct btrfs_path *p); |
2c90e5d6 CM |
3031 | struct btrfs_path *btrfs_alloc_path(void); |
3032 | void btrfs_free_path(struct btrfs_path *p); | |
b4ce94de | 3033 | void btrfs_set_path_blocking(struct btrfs_path *p); |
16cdcec7 | 3034 | void btrfs_clear_path_blocking(struct btrfs_path *p, |
bd681513 | 3035 | struct extent_buffer *held, int held_rw); |
b4ce94de CM |
3036 | void btrfs_unlock_up_safe(struct btrfs_path *p, int level); |
3037 | ||
85e21bac CM |
3038 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
3039 | struct btrfs_path *path, int slot, int nr); | |
85e21bac CM |
3040 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, |
3041 | struct btrfs_root *root, | |
3042 | struct btrfs_path *path) | |
3043 | { | |
3044 | return btrfs_del_items(trans, root, path, path->slots[0], 1); | |
3045 | } | |
3046 | ||
143bede5 JM |
3047 | void setup_items_for_insert(struct btrfs_trans_handle *trans, |
3048 | struct btrfs_root *root, struct btrfs_path *path, | |
3049 | struct btrfs_key *cpu_key, u32 *data_size, | |
3050 | u32 total_data, u32 total_size, int nr); | |
e089f05c CM |
3051 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root |
3052 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
9c58309d CM |
3053 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
3054 | struct btrfs_root *root, | |
3055 | struct btrfs_path *path, | |
3056 | struct btrfs_key *cpu_key, u32 *data_size, int nr); | |
3057 | ||
3058 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, | |
3059 | struct btrfs_root *root, | |
3060 | struct btrfs_path *path, | |
3061 | struct btrfs_key *key, | |
3062 | u32 data_size) | |
3063 | { | |
3064 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); | |
3065 | } | |
3066 | ||
234b63a0 | 3067 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
3d7806ec JS |
3068 | int btrfs_next_old_leaf(struct btrfs_root *root, struct btrfs_path *path, |
3069 | u64 time_seq); | |
1c8f52a5 AB |
3070 | static inline int btrfs_next_old_item(struct btrfs_root *root, |
3071 | struct btrfs_path *p, u64 time_seq) | |
c7d22a3c JS |
3072 | { |
3073 | ++p->slots[0]; | |
3074 | if (p->slots[0] >= btrfs_header_nritems(p->nodes[0])) | |
1c8f52a5 | 3075 | return btrfs_next_old_leaf(root, p, time_seq); |
c7d22a3c JS |
3076 | return 0; |
3077 | } | |
1c8f52a5 AB |
3078 | static inline int btrfs_next_item(struct btrfs_root *root, struct btrfs_path *p) |
3079 | { | |
3080 | return btrfs_next_old_item(root, p, 0); | |
3081 | } | |
7bb86316 | 3082 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
5f39d397 | 3083 | int btrfs_leaf_free_space(struct btrfs_root *root, struct extent_buffer *leaf); |
2c536799 JM |
3084 | int __must_check btrfs_drop_snapshot(struct btrfs_root *root, |
3085 | struct btrfs_block_rsv *block_rsv, | |
3086 | int update_ref, int for_reloc); | |
f82d02d9 YZ |
3087 | int btrfs_drop_subtree(struct btrfs_trans_handle *trans, |
3088 | struct btrfs_root *root, | |
3089 | struct extent_buffer *node, | |
3090 | struct extent_buffer *parent); | |
7841cb28 DS |
3091 | static inline int btrfs_fs_closing(struct btrfs_fs_info *fs_info) |
3092 | { | |
3093 | /* | |
3094 | * Get synced with close_ctree() | |
3095 | */ | |
3096 | smp_mb(); | |
3097 | return fs_info->closing; | |
3098 | } | |
6c41761f DS |
3099 | static inline void free_fs_info(struct btrfs_fs_info *fs_info) |
3100 | { | |
837d5b6e | 3101 | kfree(fs_info->balance_ctl); |
6c41761f DS |
3102 | kfree(fs_info->delayed_root); |
3103 | kfree(fs_info->extent_root); | |
3104 | kfree(fs_info->tree_root); | |
3105 | kfree(fs_info->chunk_root); | |
3106 | kfree(fs_info->dev_root); | |
3107 | kfree(fs_info->csum_root); | |
bcef60f2 | 3108 | kfree(fs_info->quota_root); |
6c41761f DS |
3109 | kfree(fs_info->super_copy); |
3110 | kfree(fs_info->super_for_commit); | |
3111 | kfree(fs_info); | |
3112 | } | |
7841cb28 | 3113 | |
097b8a7c JS |
3114 | /* tree mod log functions from ctree.c */ |
3115 | u64 btrfs_get_tree_mod_seq(struct btrfs_fs_info *fs_info, | |
3116 | struct seq_list *elem); | |
3117 | void btrfs_put_tree_mod_seq(struct btrfs_fs_info *fs_info, | |
3118 | struct seq_list *elem); | |
3119 | static inline u64 btrfs_inc_tree_mod_seq(struct btrfs_fs_info *fs_info) | |
3120 | { | |
3121 | return atomic_inc_return(&fs_info->tree_mod_seq); | |
3122 | } | |
3123 | ||
dee26a9f | 3124 | /* root-item.c */ |
ea9e8b11 | 3125 | int btrfs_find_root_ref(struct btrfs_root *tree_root, |
4df27c4d YZ |
3126 | struct btrfs_path *path, |
3127 | u64 root_id, u64 ref_id); | |
0660b5af CM |
3128 | int btrfs_add_root_ref(struct btrfs_trans_handle *trans, |
3129 | struct btrfs_root *tree_root, | |
4df27c4d YZ |
3130 | u64 root_id, u64 ref_id, u64 dirid, u64 sequence, |
3131 | const char *name, int name_len); | |
3132 | int btrfs_del_root_ref(struct btrfs_trans_handle *trans, | |
3133 | struct btrfs_root *tree_root, | |
3134 | u64 root_id, u64 ref_id, u64 dirid, u64 *sequence, | |
0660b5af | 3135 | const char *name, int name_len); |
e089f05c CM |
3136 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
3137 | struct btrfs_key *key); | |
3138 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
3139 | *root, struct btrfs_key *key, struct btrfs_root_item | |
3140 | *item); | |
b45a9d8b JM |
3141 | int __must_check btrfs_update_root(struct btrfs_trans_handle *trans, |
3142 | struct btrfs_root *root, | |
3143 | struct btrfs_key *key, | |
3144 | struct btrfs_root_item *item); | |
8ea05e3a AB |
3145 | void btrfs_read_root_item(struct btrfs_root *root, |
3146 | struct extent_buffer *eb, int slot, | |
3147 | struct btrfs_root_item *item); | |
e089f05c CM |
3148 | int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct |
3149 | btrfs_root_item *item, struct btrfs_key *key); | |
5d4f98a2 | 3150 | int btrfs_find_dead_roots(struct btrfs_root *root, u64 objectid); |
76dda93c | 3151 | int btrfs_find_orphan_roots(struct btrfs_root *tree_root); |
bf5f32ec MF |
3152 | void btrfs_set_root_node(struct btrfs_root_item *item, |
3153 | struct extent_buffer *node); | |
08fe4db1 | 3154 | void btrfs_check_and_init_root_item(struct btrfs_root_item *item); |
8ea05e3a AB |
3155 | void btrfs_update_root_times(struct btrfs_trans_handle *trans, |
3156 | struct btrfs_root *root); | |
08fe4db1 | 3157 | |
dee26a9f | 3158 | /* dir-item.c */ |
d397712b CM |
3159 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, |
3160 | struct btrfs_root *root, const char *name, | |
16cdcec7 | 3161 | int name_len, struct inode *dir, |
aec7477b | 3162 | struct btrfs_key *location, u8 type, u64 index); |
7e38180e CM |
3163 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
3164 | struct btrfs_root *root, | |
3165 | struct btrfs_path *path, u64 dir, | |
3166 | const char *name, int name_len, | |
3167 | int mod); | |
3168 | struct btrfs_dir_item * | |
3169 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
3170 | struct btrfs_root *root, | |
3171 | struct btrfs_path *path, u64 dir, | |
3172 | u64 objectid, const char *name, int name_len, | |
3173 | int mod); | |
4df27c4d YZ |
3174 | struct btrfs_dir_item * |
3175 | btrfs_search_dir_index_item(struct btrfs_root *root, | |
3176 | struct btrfs_path *path, u64 dirid, | |
3177 | const char *name, int name_len); | |
7e38180e CM |
3178 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, |
3179 | struct btrfs_path *path, | |
7f5c1516 | 3180 | const char *name, int name_len); |
7e38180e CM |
3181 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
3182 | struct btrfs_root *root, | |
3183 | struct btrfs_path *path, | |
3184 | struct btrfs_dir_item *di); | |
5103e947 | 3185 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
f34f57a3 YZ |
3186 | struct btrfs_root *root, |
3187 | struct btrfs_path *path, u64 objectid, | |
3188 | const char *name, u16 name_len, | |
3189 | const void *data, u16 data_len); | |
5103e947 JB |
3190 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, |
3191 | struct btrfs_root *root, | |
3192 | struct btrfs_path *path, u64 dir, | |
3193 | const char *name, u16 name_len, | |
3194 | int mod); | |
22a94d44 JB |
3195 | int verify_dir_item(struct btrfs_root *root, |
3196 | struct extent_buffer *leaf, | |
3197 | struct btrfs_dir_item *dir_item); | |
7b128766 JB |
3198 | |
3199 | /* orphan.c */ | |
3200 | int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, | |
3201 | struct btrfs_root *root, u64 offset); | |
3202 | int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, | |
3203 | struct btrfs_root *root, u64 offset); | |
4df27c4d | 3204 | int btrfs_find_orphan_item(struct btrfs_root *root, u64 offset); |
7b128766 | 3205 | |
dee26a9f | 3206 | /* inode-item.c */ |
3954401f CM |
3207 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
3208 | struct btrfs_root *root, | |
3209 | const char *name, int name_len, | |
aec7477b | 3210 | u64 inode_objectid, u64 ref_objectid, u64 index); |
3954401f CM |
3211 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, |
3212 | struct btrfs_root *root, | |
3213 | const char *name, int name_len, | |
aec7477b | 3214 | u64 inode_objectid, u64 ref_objectid, u64 *index); |
f186373f MF |
3215 | int btrfs_get_inode_ref_index(struct btrfs_trans_handle *trans, |
3216 | struct btrfs_root *root, | |
3217 | struct btrfs_path *path, | |
3218 | const char *name, int name_len, | |
3219 | u64 inode_objectid, u64 ref_objectid, int mod, | |
3220 | u64 *ret_index); | |
5f39d397 CM |
3221 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
3222 | struct btrfs_root *root, | |
3223 | struct btrfs_path *path, u64 objectid); | |
293ffd5f | 3224 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
3225 | *root, struct btrfs_path *path, |
3226 | struct btrfs_key *location, int mod); | |
dee26a9f | 3227 | |
f186373f MF |
3228 | struct btrfs_inode_extref * |
3229 | btrfs_lookup_inode_extref(struct btrfs_trans_handle *trans, | |
3230 | struct btrfs_root *root, | |
3231 | struct btrfs_path *path, | |
3232 | const char *name, int name_len, | |
3233 | u64 inode_objectid, u64 ref_objectid, int ins_len, | |
3234 | int cow); | |
3235 | ||
3236 | int btrfs_find_name_in_ext_backref(struct btrfs_path *path, | |
3237 | u64 ref_objectid, const char *name, | |
3238 | int name_len, | |
3239 | struct btrfs_inode_extref **extref_ret); | |
3240 | ||
dee26a9f | 3241 | /* file-item.c */ |
459931ec CM |
3242 | int btrfs_del_csums(struct btrfs_trans_handle *trans, |
3243 | struct btrfs_root *root, u64 bytenr, u64 len); | |
61b49440 | 3244 | int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 3245 | struct bio *bio, u32 *dst); |
4b46fce2 | 3246 | int btrfs_lookup_bio_sums_dio(struct btrfs_root *root, struct inode *inode, |
c329861d | 3247 | struct bio *bio, u64 logical_offset); |
b18c6685 | 3248 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
c8b97818 CM |
3249 | struct btrfs_root *root, |
3250 | u64 objectid, u64 pos, | |
3251 | u64 disk_offset, u64 disk_num_bytes, | |
3252 | u64 num_bytes, u64 offset, u64 ram_bytes, | |
3253 | u8 compression, u8 encryption, u16 other_encoding); | |
dee26a9f CM |
3254 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
3255 | struct btrfs_root *root, | |
3256 | struct btrfs_path *path, u64 objectid, | |
db94535d | 3257 | u64 bytenr, int mod); |
065631f6 | 3258 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
d20f7043 | 3259 | struct btrfs_root *root, |
e6dcd2dc | 3260 | struct btrfs_ordered_sum *sums); |
3edf7d33 | 3261 | int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 3262 | struct bio *bio, u64 file_start, int contig); |
b18c6685 CM |
3263 | struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans, |
3264 | struct btrfs_root *root, | |
3265 | struct btrfs_path *path, | |
d20f7043 | 3266 | u64 bytenr, int cow); |
1de037a4 CM |
3267 | int btrfs_csum_truncate(struct btrfs_trans_handle *trans, |
3268 | struct btrfs_root *root, struct btrfs_path *path, | |
3269 | u64 isize); | |
a2de733c AJ |
3270 | int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end, |
3271 | struct list_head *list, int search_commit); | |
39279cc3 | 3272 | /* inode.c */ |
b2675157 JB |
3273 | struct extent_map *btrfs_get_extent_fiemap(struct inode *inode, struct page *page, |
3274 | size_t pg_offset, u64 start, u64 len, | |
3275 | int create); | |
4881ee5a CM |
3276 | |
3277 | /* RHEL and EL kernels have a patch that renames PG_checked to FsMisc */ | |
5036f538 | 3278 | #if defined(ClearPageFsMisc) && !defined(ClearPageChecked) |
4881ee5a CM |
3279 | #define ClearPageChecked ClearPageFsMisc |
3280 | #define SetPageChecked SetPageFsMisc | |
3281 | #define PageChecked PageFsMisc | |
3282 | #endif | |
3283 | ||
b6973aa6 LZ |
3284 | /* This forces readahead on a given range of bytes in an inode */ |
3285 | static inline void btrfs_force_ra(struct address_space *mapping, | |
3286 | struct file_ra_state *ra, struct file *file, | |
3287 | pgoff_t offset, unsigned long req_size) | |
3288 | { | |
3289 | page_cache_sync_readahead(mapping, ra, file, offset, req_size); | |
3290 | } | |
3291 | ||
3de4586c CM |
3292 | struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry); |
3293 | int btrfs_set_inode_index(struct inode *dir, u64 *index); | |
e02119d5 CM |
3294 | int btrfs_unlink_inode(struct btrfs_trans_handle *trans, |
3295 | struct btrfs_root *root, | |
3296 | struct inode *dir, struct inode *inode, | |
3297 | const char *name, int name_len); | |
3298 | int btrfs_add_link(struct btrfs_trans_handle *trans, | |
3299 | struct inode *parent_inode, struct inode *inode, | |
3300 | const char *name, int name_len, int add_backref, u64 index); | |
4df27c4d YZ |
3301 | int btrfs_unlink_subvol(struct btrfs_trans_handle *trans, |
3302 | struct btrfs_root *root, | |
3303 | struct inode *dir, u64 objectid, | |
3304 | const char *name, int name_len); | |
2aaa6655 JB |
3305 | int btrfs_truncate_page(struct inode *inode, loff_t from, loff_t len, |
3306 | int front); | |
e02119d5 CM |
3307 | int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, |
3308 | struct btrfs_root *root, | |
3309 | struct inode *inode, u64 new_size, | |
3310 | u32 min_type); | |
3311 | ||
24bbcf04 | 3312 | int btrfs_start_delalloc_inodes(struct btrfs_root *root, int delay_iput); |
2ac55d41 JB |
3313 | int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end, |
3314 | struct extent_state **cached_state); | |
f421950f CM |
3315 | int btrfs_writepages(struct address_space *mapping, |
3316 | struct writeback_control *wbc); | |
d2fb3437 | 3317 | int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, |
d82a6f1d | 3318 | struct btrfs_root *new_root, u64 new_dirid); |
239b14b3 | 3319 | int btrfs_merge_bio_hook(struct page *page, unsigned long offset, |
c8b97818 | 3320 | size_t size, struct bio *bio, unsigned long bio_flags); |
239b14b3 | 3321 | |
c2ec175c | 3322 | int btrfs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf); |
9ebefb18 | 3323 | int btrfs_readpage(struct file *file, struct page *page); |
bd555975 | 3324 | void btrfs_evict_inode(struct inode *inode); |
a9185b41 | 3325 | int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc); |
22c44fe6 | 3326 | int btrfs_dirty_inode(struct inode *inode); |
39279cc3 CM |
3327 | struct inode *btrfs_alloc_inode(struct super_block *sb); |
3328 | void btrfs_destroy_inode(struct inode *inode); | |
45321ac5 | 3329 | int btrfs_drop_inode(struct inode *inode); |
39279cc3 CM |
3330 | int btrfs_init_cachep(void); |
3331 | void btrfs_destroy_cachep(void); | |
6bf13c0c | 3332 | long btrfs_ioctl_trans_end(struct file *file); |
1a54ef8c | 3333 | struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location, |
73f73415 | 3334 | struct btrfs_root *root, int *was_new); |
a52d9a80 | 3335 | struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page, |
306e16ce | 3336 | size_t pg_offset, u64 start, u64 end, |
a52d9a80 CM |
3337 | int create); |
3338 | int btrfs_update_inode(struct btrfs_trans_handle *trans, | |
3339 | struct btrfs_root *root, | |
3340 | struct inode *inode); | |
5b21f2ed ZY |
3341 | int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode); |
3342 | int btrfs_orphan_del(struct btrfs_trans_handle *trans, struct inode *inode); | |
66b4ffd1 | 3343 | int btrfs_orphan_cleanup(struct btrfs_root *root); |
d68fc57b YZ |
3344 | void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans, |
3345 | struct btrfs_root *root); | |
a41ad394 | 3346 | int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size); |
143bede5 | 3347 | void btrfs_invalidate_inodes(struct btrfs_root *root); |
24bbcf04 YZ |
3348 | void btrfs_add_delayed_iput(struct inode *inode); |
3349 | void btrfs_run_delayed_iputs(struct btrfs_root *root); | |
efa56464 YZ |
3350 | int btrfs_prealloc_file_range(struct inode *inode, int mode, |
3351 | u64 start, u64 num_bytes, u64 min_size, | |
3352 | loff_t actual_len, u64 *alloc_hint); | |
0af3d00b JB |
3353 | int btrfs_prealloc_file_range_trans(struct inode *inode, |
3354 | struct btrfs_trans_handle *trans, int mode, | |
3355 | u64 start, u64 num_bytes, u64 min_size, | |
3356 | loff_t actual_len, u64 *alloc_hint); | |
82d339d9 | 3357 | extern const struct dentry_operations btrfs_dentry_operations; |
f46b5a66 CH |
3358 | |
3359 | /* ioctl.c */ | |
3360 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
6cbff00f CH |
3361 | void btrfs_update_iflags(struct inode *inode); |
3362 | void btrfs_inherit_iflags(struct inode *inode, struct inode *dir); | |
4cb5300b CM |
3363 | int btrfs_defrag_file(struct inode *inode, struct file *file, |
3364 | struct btrfs_ioctl_defrag_range_args *range, | |
3365 | u64 newer_than, unsigned long max_pages); | |
5af3e8cc SB |
3366 | void btrfs_get_block_group_info(struct list_head *groups_list, |
3367 | struct btrfs_ioctl_space_info *space); | |
3368 | ||
39279cc3 | 3369 | /* file.c */ |
4cb5300b CM |
3370 | int btrfs_add_inode_defrag(struct btrfs_trans_handle *trans, |
3371 | struct inode *inode); | |
3372 | int btrfs_run_defrag_inodes(struct btrfs_fs_info *fs_info); | |
02c24a82 | 3373 | int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync); |
7014cdb4 JB |
3374 | void btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end, |
3375 | int skip_pinned); | |
5dc562c5 JB |
3376 | int btrfs_replace_extent_cache(struct inode *inode, struct extent_map *replace, |
3377 | u64 start, u64 end, int skip_pinned, | |
3378 | int modified); | |
828c0950 | 3379 | extern const struct file_operations btrfs_file_operations; |
5dc562c5 JB |
3380 | int __btrfs_drop_extents(struct btrfs_trans_handle *trans, |
3381 | struct btrfs_root *root, struct inode *inode, | |
3382 | struct btrfs_path *path, u64 start, u64 end, | |
2aaa6655 | 3383 | u64 *drop_end, int drop_cache); |
5dc562c5 JB |
3384 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, |
3385 | struct btrfs_root *root, struct inode *inode, u64 start, | |
2671485d | 3386 | u64 end, int drop_cache); |
d899e052 | 3387 | int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, |
d899e052 | 3388 | struct inode *inode, u64 start, u64 end); |
6bf13c0c | 3389 | int btrfs_release_file(struct inode *inode, struct file *file); |
be1a12a0 JB |
3390 | void btrfs_drop_pages(struct page **pages, size_t num_pages); |
3391 | int btrfs_dirty_pages(struct btrfs_root *root, struct inode *inode, | |
3392 | struct page **pages, size_t num_pages, | |
3393 | loff_t pos, size_t write_bytes, | |
3394 | struct extent_state **cached); | |
6bf13c0c | 3395 | |
6702ed49 CM |
3396 | /* tree-defrag.c */ |
3397 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, | |
3398 | struct btrfs_root *root, int cache_only); | |
58176a96 JB |
3399 | |
3400 | /* sysfs.c */ | |
3401 | int btrfs_init_sysfs(void); | |
3402 | void btrfs_exit_sysfs(void); | |
58176a96 | 3403 | |
5103e947 JB |
3404 | /* xattr.c */ |
3405 | ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size); | |
6099afe8 | 3406 | |
edbd8d4e | 3407 | /* super.c */ |
edf24abe | 3408 | int btrfs_parse_options(struct btrfs_root *root, char *options); |
6bf13c0c | 3409 | int btrfs_sync_fs(struct super_block *sb, int wait); |
533574c6 JP |
3410 | |
3411 | #ifdef CONFIG_PRINTK | |
3412 | __printf(2, 3) | |
4da35113 | 3413 | void btrfs_printk(struct btrfs_fs_info *fs_info, const char *fmt, ...); |
533574c6 JP |
3414 | #else |
3415 | static inline __printf(2, 3) | |
3416 | void btrfs_printk(struct btrfs_fs_info *fs_info, const char *fmt, ...) | |
3417 | { | |
3418 | } | |
3419 | #endif | |
3420 | ||
3421 | __printf(5, 6) | |
acce952b | 3422 | void __btrfs_std_error(struct btrfs_fs_info *fs_info, const char *function, |
4da35113 | 3423 | unsigned int line, int errno, const char *fmt, ...); |
acce952b | 3424 | |
533574c6 | 3425 | |
49b25e05 JM |
3426 | void __btrfs_abort_transaction(struct btrfs_trans_handle *trans, |
3427 | struct btrfs_root *root, const char *function, | |
3428 | unsigned int line, int errno); | |
3429 | ||
2b0ce2c2 MH |
3430 | #define btrfs_set_fs_incompat(__fs_info, opt) \ |
3431 | __btrfs_set_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3432 | ||
3433 | static inline void __btrfs_set_fs_incompat(struct btrfs_fs_info *fs_info, | |
3434 | u64 flag) | |
3435 | { | |
3436 | struct btrfs_super_block *disk_super; | |
3437 | u64 features; | |
3438 | ||
3439 | disk_super = fs_info->super_copy; | |
3440 | features = btrfs_super_incompat_flags(disk_super); | |
3441 | if (!(features & flag)) { | |
3442 | features |= flag; | |
3443 | btrfs_set_super_incompat_flags(disk_super, features); | |
3444 | } | |
3445 | } | |
3446 | ||
005d6427 DS |
3447 | /* |
3448 | * Call btrfs_abort_transaction as early as possible when an error condition is | |
3449 | * detected, that way the exact line number is reported. | |
3450 | */ | |
3451 | ||
49b25e05 JM |
3452 | #define btrfs_abort_transaction(trans, root, errno) \ |
3453 | do { \ | |
3454 | __btrfs_abort_transaction(trans, root, __func__, \ | |
3455 | __LINE__, errno); \ | |
3456 | } while (0) | |
acce952b | 3457 | |
3458 | #define btrfs_std_error(fs_info, errno) \ | |
3459 | do { \ | |
3460 | if ((errno)) \ | |
4da35113 JM |
3461 | __btrfs_std_error((fs_info), __func__, \ |
3462 | __LINE__, (errno), NULL); \ | |
3463 | } while (0) | |
3464 | ||
3465 | #define btrfs_error(fs_info, errno, fmt, args...) \ | |
3466 | do { \ | |
3467 | __btrfs_std_error((fs_info), __func__, __LINE__, \ | |
3468 | (errno), fmt, ##args); \ | |
acce952b | 3469 | } while (0) |
33268eaf | 3470 | |
533574c6 | 3471 | __printf(5, 6) |
8c342930 JM |
3472 | void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function, |
3473 | unsigned int line, int errno, const char *fmt, ...); | |
3474 | ||
3475 | #define btrfs_panic(fs_info, errno, fmt, args...) \ | |
3476 | do { \ | |
3477 | struct btrfs_fs_info *_i = (fs_info); \ | |
3478 | __btrfs_panic(_i, __func__, __LINE__, errno, fmt, ##args); \ | |
3479 | BUG_ON(!(_i->mount_opt & BTRFS_MOUNT_PANIC_ON_FATAL_ERROR)); \ | |
acce952b | 3480 | } while (0) |
33268eaf JB |
3481 | |
3482 | /* acl.c */ | |
0eda294d | 3483 | #ifdef CONFIG_BTRFS_FS_POSIX_ACL |
4e34e719 | 3484 | struct posix_acl *btrfs_get_acl(struct inode *inode, int type); |
f34f57a3 YZ |
3485 | int btrfs_init_acl(struct btrfs_trans_handle *trans, |
3486 | struct inode *inode, struct inode *dir); | |
33268eaf | 3487 | int btrfs_acl_chmod(struct inode *inode); |
9b89d95a | 3488 | #else |
ed8f3737 | 3489 | #define btrfs_get_acl NULL |
9b89d95a LZ |
3490 | static inline int btrfs_init_acl(struct btrfs_trans_handle *trans, |
3491 | struct inode *inode, struct inode *dir) | |
3492 | { | |
3493 | return 0; | |
3494 | } | |
3495 | static inline int btrfs_acl_chmod(struct inode *inode) | |
3496 | { | |
3497 | return 0; | |
3498 | } | |
3499 | #endif | |
0f9dd46c | 3500 | |
5d4f98a2 YZ |
3501 | /* relocation.c */ |
3502 | int btrfs_relocate_block_group(struct btrfs_root *root, u64 group_start); | |
3503 | int btrfs_init_reloc_root(struct btrfs_trans_handle *trans, | |
3504 | struct btrfs_root *root); | |
3505 | int btrfs_update_reloc_root(struct btrfs_trans_handle *trans, | |
3506 | struct btrfs_root *root); | |
3507 | int btrfs_recover_relocation(struct btrfs_root *root); | |
3508 | int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len); | |
3fd0a558 YZ |
3509 | void btrfs_reloc_cow_block(struct btrfs_trans_handle *trans, |
3510 | struct btrfs_root *root, struct extent_buffer *buf, | |
3511 | struct extent_buffer *cow); | |
3512 | void btrfs_reloc_pre_snapshot(struct btrfs_trans_handle *trans, | |
3513 | struct btrfs_pending_snapshot *pending, | |
3514 | u64 *bytes_to_reserve); | |
49b25e05 | 3515 | int btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans, |
3fd0a558 | 3516 | struct btrfs_pending_snapshot *pending); |
a2de733c AJ |
3517 | |
3518 | /* scrub.c */ | |
3519 | int btrfs_scrub_dev(struct btrfs_root *root, u64 devid, u64 start, u64 end, | |
8628764e | 3520 | struct btrfs_scrub_progress *progress, int readonly); |
143bede5 JM |
3521 | void btrfs_scrub_pause(struct btrfs_root *root); |
3522 | void btrfs_scrub_pause_super(struct btrfs_root *root); | |
3523 | void btrfs_scrub_continue(struct btrfs_root *root); | |
3524 | void btrfs_scrub_continue_super(struct btrfs_root *root); | |
49b25e05 | 3525 | int __btrfs_scrub_cancel(struct btrfs_fs_info *info); |
a2de733c AJ |
3526 | int btrfs_scrub_cancel(struct btrfs_root *root); |
3527 | int btrfs_scrub_cancel_dev(struct btrfs_root *root, struct btrfs_device *dev); | |
3528 | int btrfs_scrub_cancel_devid(struct btrfs_root *root, u64 devid); | |
3529 | int btrfs_scrub_progress(struct btrfs_root *root, u64 devid, | |
3530 | struct btrfs_scrub_progress *progress); | |
3531 | ||
7414a03f AJ |
3532 | /* reada.c */ |
3533 | struct reada_control { | |
3534 | struct btrfs_root *root; /* tree to prefetch */ | |
3535 | struct btrfs_key key_start; | |
3536 | struct btrfs_key key_end; /* exclusive */ | |
3537 | atomic_t elems; | |
3538 | struct kref refcnt; | |
3539 | wait_queue_head_t wait; | |
3540 | }; | |
3541 | struct reada_control *btrfs_reada_add(struct btrfs_root *root, | |
3542 | struct btrfs_key *start, struct btrfs_key *end); | |
3543 | int btrfs_reada_wait(void *handle); | |
3544 | void btrfs_reada_detach(void *handle); | |
3545 | int btree_readahead_hook(struct btrfs_root *root, struct extent_buffer *eb, | |
3546 | u64 start, int err); | |
3547 | ||
bed92eae AJ |
3548 | /* qgroup.c */ |
3549 | struct qgroup_update { | |
64947ec0 | 3550 | struct list_head list; |
bed92eae AJ |
3551 | struct btrfs_delayed_ref_node *node; |
3552 | struct btrfs_delayed_extent_op *extent_op; | |
64947ec0 JS |
3553 | }; |
3554 | ||
bed92eae AJ |
3555 | int btrfs_quota_enable(struct btrfs_trans_handle *trans, |
3556 | struct btrfs_fs_info *fs_info); | |
3557 | int btrfs_quota_disable(struct btrfs_trans_handle *trans, | |
3558 | struct btrfs_fs_info *fs_info); | |
3559 | int btrfs_quota_rescan(struct btrfs_fs_info *fs_info); | |
3560 | int btrfs_add_qgroup_relation(struct btrfs_trans_handle *trans, | |
3561 | struct btrfs_fs_info *fs_info, u64 src, u64 dst); | |
3562 | int btrfs_del_qgroup_relation(struct btrfs_trans_handle *trans, | |
3563 | struct btrfs_fs_info *fs_info, u64 src, u64 dst); | |
3564 | int btrfs_create_qgroup(struct btrfs_trans_handle *trans, | |
3565 | struct btrfs_fs_info *fs_info, u64 qgroupid, | |
3566 | char *name); | |
3567 | int btrfs_remove_qgroup(struct btrfs_trans_handle *trans, | |
3568 | struct btrfs_fs_info *fs_info, u64 qgroupid); | |
3569 | int btrfs_limit_qgroup(struct btrfs_trans_handle *trans, | |
3570 | struct btrfs_fs_info *fs_info, u64 qgroupid, | |
3571 | struct btrfs_qgroup_limit *limit); | |
3572 | int btrfs_read_qgroup_config(struct btrfs_fs_info *fs_info); | |
3573 | void btrfs_free_qgroup_config(struct btrfs_fs_info *fs_info); | |
3574 | struct btrfs_delayed_extent_op; | |
3575 | int btrfs_qgroup_record_ref(struct btrfs_trans_handle *trans, | |
3576 | struct btrfs_delayed_ref_node *node, | |
3577 | struct btrfs_delayed_extent_op *extent_op); | |
3578 | int btrfs_qgroup_account_ref(struct btrfs_trans_handle *trans, | |
3579 | struct btrfs_fs_info *fs_info, | |
3580 | struct btrfs_delayed_ref_node *node, | |
3581 | struct btrfs_delayed_extent_op *extent_op); | |
3582 | int btrfs_run_qgroups(struct btrfs_trans_handle *trans, | |
3583 | struct btrfs_fs_info *fs_info); | |
3584 | int btrfs_qgroup_inherit(struct btrfs_trans_handle *trans, | |
3585 | struct btrfs_fs_info *fs_info, u64 srcid, u64 objectid, | |
3586 | struct btrfs_qgroup_inherit *inherit); | |
3587 | int btrfs_qgroup_reserve(struct btrfs_root *root, u64 num_bytes); | |
3588 | void btrfs_qgroup_free(struct btrfs_root *root, u64 num_bytes); | |
3589 | ||
3590 | void assert_qgroups_uptodate(struct btrfs_trans_handle *trans); | |
bd989ba3 | 3591 | |
95a06077 JS |
3592 | static inline int is_fstree(u64 rootid) |
3593 | { | |
3594 | if (rootid == BTRFS_FS_TREE_OBJECTID || | |
3595 | (s64)rootid >= (s64)BTRFS_FIRST_FREE_OBJECTID) | |
3596 | return 1; | |
3597 | return 0; | |
3598 | } | |
eb60ceac | 3599 | #endif |