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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> |
d1310b2e | 33 | #include "extent_io.h" |
5f39d397 | 34 | #include "extent_map.h" |
8b712842 | 35 | #include "async-thread.h" |
a2de733c | 36 | #include "ioctl.h" |
e20d96d6 | 37 | |
e089f05c | 38 | struct btrfs_trans_handle; |
79154b1b | 39 | struct btrfs_transaction; |
a22285a6 | 40 | struct btrfs_pending_snapshot; |
35b7e476 CM |
41 | extern struct kmem_cache *btrfs_trans_handle_cachep; |
42 | extern struct kmem_cache *btrfs_transaction_cachep; | |
43 | extern struct kmem_cache *btrfs_bit_radix_cachep; | |
2c90e5d6 | 44 | extern struct kmem_cache *btrfs_path_cachep; |
dc89e982 | 45 | extern struct kmem_cache *btrfs_free_space_cachep; |
e6dcd2dc | 46 | struct btrfs_ordered_sum; |
e089f05c | 47 | |
2a7108ad | 48 | #define BTRFS_MAGIC "_BHRfS_M" |
eb60ceac | 49 | |
4008c04a | 50 | #define BTRFS_MAX_LEVEL 8 |
0b86a832 | 51 | |
5d4f98a2 YZ |
52 | #define BTRFS_COMPAT_EXTENT_TREE_V0 |
53 | ||
5a3f23d5 CM |
54 | /* |
55 | * files bigger than this get some pre-flushing when they are added | |
56 | * to the ordered operations list. That way we limit the total | |
57 | * work done by the commit | |
58 | */ | |
59 | #define BTRFS_ORDERED_OPERATIONS_FLUSH_LIMIT (8 * 1024 * 1024) | |
60 | ||
0b86a832 | 61 | /* holds pointers to all of the tree roots */ |
6407bf6d | 62 | #define BTRFS_ROOT_TREE_OBJECTID 1ULL |
0b86a832 CM |
63 | |
64 | /* stores information about which extents are in use, and reference counts */ | |
0cf6c620 | 65 | #define BTRFS_EXTENT_TREE_OBJECTID 2ULL |
0b86a832 | 66 | |
0b86a832 CM |
67 | /* |
68 | * chunk tree stores translations from logical -> physical block numbering | |
69 | * the super block points to the chunk tree | |
70 | */ | |
e085def2 | 71 | #define BTRFS_CHUNK_TREE_OBJECTID 3ULL |
0b86a832 CM |
72 | |
73 | /* | |
74 | * stores information about which areas of a given device are in use. | |
75 | * one per device. The tree of tree roots points to the device tree | |
76 | */ | |
e085def2 CM |
77 | #define BTRFS_DEV_TREE_OBJECTID 4ULL |
78 | ||
79 | /* one per subvolume, storing files and directories */ | |
80 | #define BTRFS_FS_TREE_OBJECTID 5ULL | |
81 | ||
82 | /* directory objectid inside the root tree */ | |
83 | #define BTRFS_ROOT_TREE_DIR_OBJECTID 6ULL | |
0b86a832 | 84 | |
d20f7043 CM |
85 | /* holds checksums of all the data extents */ |
86 | #define BTRFS_CSUM_TREE_OBJECTID 7ULL | |
87 | ||
7b128766 JB |
88 | /* orhpan objectid for tracking unlinked/truncated files */ |
89 | #define BTRFS_ORPHAN_OBJECTID -5ULL | |
90 | ||
e02119d5 CM |
91 | /* does write ahead logging to speed up fsyncs */ |
92 | #define BTRFS_TREE_LOG_OBJECTID -6ULL | |
93 | #define BTRFS_TREE_LOG_FIXUP_OBJECTID -7ULL | |
94 | ||
e4657689 ZY |
95 | /* for space balancing */ |
96 | #define BTRFS_TREE_RELOC_OBJECTID -8ULL | |
97 | #define BTRFS_DATA_RELOC_TREE_OBJECTID -9ULL | |
98 | ||
d20f7043 CM |
99 | /* |
100 | * extent checksums all have this objectid | |
101 | * this allows them to share the logging tree | |
102 | * for fsyncs | |
103 | */ | |
104 | #define BTRFS_EXTENT_CSUM_OBJECTID -10ULL | |
105 | ||
0af3d00b JB |
106 | /* For storing free space cache */ |
107 | #define BTRFS_FREE_SPACE_OBJECTID -11ULL | |
108 | ||
82d5902d LZ |
109 | /* |
110 | * The inode number assigned to the special inode for sotring | |
111 | * free ino cache | |
112 | */ | |
113 | #define BTRFS_FREE_INO_OBJECTID -12ULL | |
114 | ||
31840ae1 ZY |
115 | /* dummy objectid represents multiple objectids */ |
116 | #define BTRFS_MULTIPLE_OBJECTIDS -255ULL | |
117 | ||
0b86a832 | 118 | /* |
6527cdbe | 119 | * All files have objectids in this range. |
0b86a832 | 120 | */ |
f6dbff55 | 121 | #define BTRFS_FIRST_FREE_OBJECTID 256ULL |
6527cdbe | 122 | #define BTRFS_LAST_FREE_OBJECTID -256ULL |
e17cade2 | 123 | #define BTRFS_FIRST_CHUNK_TREE_OBJECTID 256ULL |
3768f368 | 124 | |
0b86a832 CM |
125 | |
126 | /* | |
127 | * the device items go into the chunk tree. The key is in the form | |
128 | * [ 1 BTRFS_DEV_ITEM_KEY device_id ] | |
129 | */ | |
130 | #define BTRFS_DEV_ITEMS_OBJECTID 1ULL | |
131 | ||
4df27c4d YZ |
132 | #define BTRFS_BTREE_INODE_OBJECTID 1 |
133 | ||
134 | #define BTRFS_EMPTY_SUBVOL_DIR_OBJECTID 2 | |
135 | ||
e20d96d6 CM |
136 | /* |
137 | * we can actually store much bigger names, but lets not confuse the rest | |
138 | * of linux | |
139 | */ | |
140 | #define BTRFS_NAME_LEN 255 | |
141 | ||
f254e52c CM |
142 | /* 32 bytes in various csum fields */ |
143 | #define BTRFS_CSUM_SIZE 32 | |
607d432d JB |
144 | |
145 | /* csum types */ | |
146 | #define BTRFS_CSUM_TYPE_CRC32 0 | |
147 | ||
148 | static int btrfs_csum_sizes[] = { 4, 0 }; | |
149 | ||
509659cd | 150 | /* four bytes for CRC32 */ |
3954401f | 151 | #define BTRFS_EMPTY_DIR_SIZE 0 |
f254e52c | 152 | |
fabb5681 CM |
153 | #define BTRFS_FT_UNKNOWN 0 |
154 | #define BTRFS_FT_REG_FILE 1 | |
155 | #define BTRFS_FT_DIR 2 | |
156 | #define BTRFS_FT_CHRDEV 3 | |
157 | #define BTRFS_FT_BLKDEV 4 | |
158 | #define BTRFS_FT_FIFO 5 | |
159 | #define BTRFS_FT_SOCK 6 | |
160 | #define BTRFS_FT_SYMLINK 7 | |
5103e947 JB |
161 | #define BTRFS_FT_XATTR 8 |
162 | #define BTRFS_FT_MAX 9 | |
fabb5681 | 163 | |
fec577fb | 164 | /* |
d4a78947 WF |
165 | * The key defines the order in the tree, and so it also defines (optimal) |
166 | * block layout. | |
167 | * | |
168 | * objectid corresponds to the inode number. | |
169 | * | |
170 | * type tells us things about the object, and is a kind of stream selector. | |
171 | * so for a given inode, keys with type of 1 might refer to the inode data, | |
172 | * type of 2 may point to file data in the btree and type == 3 may point to | |
173 | * extents. | |
fec577fb CM |
174 | * |
175 | * offset is the starting byte offset for this key in the stream. | |
e2fa7227 CM |
176 | * |
177 | * btrfs_disk_key is in disk byte order. struct btrfs_key is always | |
178 | * in cpu native order. Otherwise they are identical and their sizes | |
179 | * should be the same (ie both packed) | |
fec577fb | 180 | */ |
e2fa7227 CM |
181 | struct btrfs_disk_key { |
182 | __le64 objectid; | |
5f39d397 | 183 | u8 type; |
70b2befd | 184 | __le64 offset; |
e2fa7227 CM |
185 | } __attribute__ ((__packed__)); |
186 | ||
187 | struct btrfs_key { | |
eb60ceac | 188 | u64 objectid; |
5f39d397 | 189 | u8 type; |
70b2befd | 190 | u64 offset; |
eb60ceac CM |
191 | } __attribute__ ((__packed__)); |
192 | ||
0b86a832 CM |
193 | struct btrfs_mapping_tree { |
194 | struct extent_map_tree map_tree; | |
195 | }; | |
196 | ||
0b86a832 CM |
197 | struct btrfs_dev_item { |
198 | /* the internal btrfs device id */ | |
199 | __le64 devid; | |
200 | ||
201 | /* size of the device */ | |
202 | __le64 total_bytes; | |
203 | ||
204 | /* bytes used */ | |
205 | __le64 bytes_used; | |
206 | ||
207 | /* optimal io alignment for this device */ | |
208 | __le32 io_align; | |
209 | ||
210 | /* optimal io width for this device */ | |
211 | __le32 io_width; | |
212 | ||
213 | /* minimal io size for this device */ | |
214 | __le32 sector_size; | |
215 | ||
0b86a832 CM |
216 | /* type and info about this device */ |
217 | __le64 type; | |
218 | ||
2b82032c YZ |
219 | /* expected generation for this device */ |
220 | __le64 generation; | |
221 | ||
c3027eb5 CM |
222 | /* |
223 | * starting byte of this partition on the device, | |
d4a78947 | 224 | * to allow for stripe alignment in the future |
c3027eb5 CM |
225 | */ |
226 | __le64 start_offset; | |
227 | ||
e17cade2 CM |
228 | /* grouping information for allocation decisions */ |
229 | __le32 dev_group; | |
230 | ||
231 | /* seek speed 0-100 where 100 is fastest */ | |
232 | u8 seek_speed; | |
233 | ||
234 | /* bandwidth 0-100 where 100 is fastest */ | |
235 | u8 bandwidth; | |
236 | ||
0d81ba5d | 237 | /* btrfs generated uuid for this device */ |
e17cade2 | 238 | u8 uuid[BTRFS_UUID_SIZE]; |
2b82032c YZ |
239 | |
240 | /* uuid of FS who owns this device */ | |
241 | u8 fsid[BTRFS_UUID_SIZE]; | |
0b86a832 CM |
242 | } __attribute__ ((__packed__)); |
243 | ||
244 | struct btrfs_stripe { | |
245 | __le64 devid; | |
246 | __le64 offset; | |
e17cade2 | 247 | u8 dev_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
248 | } __attribute__ ((__packed__)); |
249 | ||
250 | struct btrfs_chunk { | |
e17cade2 CM |
251 | /* size of this chunk in bytes */ |
252 | __le64 length; | |
253 | ||
254 | /* objectid of the root referencing this chunk */ | |
0b86a832 | 255 | __le64 owner; |
e17cade2 | 256 | |
0b86a832 CM |
257 | __le64 stripe_len; |
258 | __le64 type; | |
259 | ||
260 | /* optimal io alignment for this chunk */ | |
261 | __le32 io_align; | |
262 | ||
263 | /* optimal io width for this chunk */ | |
264 | __le32 io_width; | |
265 | ||
266 | /* minimal io size for this chunk */ | |
267 | __le32 sector_size; | |
268 | ||
269 | /* 2^16 stripes is quite a lot, a second limit is the size of a single | |
270 | * item in the btree | |
271 | */ | |
272 | __le16 num_stripes; | |
321aecc6 CM |
273 | |
274 | /* sub stripes only matter for raid10 */ | |
275 | __le16 sub_stripes; | |
0b86a832 CM |
276 | struct btrfs_stripe stripe; |
277 | /* additional stripes go here */ | |
278 | } __attribute__ ((__packed__)); | |
279 | ||
0af3d00b JB |
280 | #define BTRFS_FREE_SPACE_EXTENT 1 |
281 | #define BTRFS_FREE_SPACE_BITMAP 2 | |
282 | ||
283 | struct btrfs_free_space_entry { | |
284 | __le64 offset; | |
285 | __le64 bytes; | |
286 | u8 type; | |
287 | } __attribute__ ((__packed__)); | |
288 | ||
289 | struct btrfs_free_space_header { | |
290 | struct btrfs_disk_key location; | |
291 | __le64 generation; | |
292 | __le64 num_entries; | |
293 | __le64 num_bitmaps; | |
294 | } __attribute__ ((__packed__)); | |
295 | ||
0b86a832 CM |
296 | static inline unsigned long btrfs_chunk_item_size(int num_stripes) |
297 | { | |
298 | BUG_ON(num_stripes == 0); | |
299 | return sizeof(struct btrfs_chunk) + | |
300 | sizeof(struct btrfs_stripe) * (num_stripes - 1); | |
301 | } | |
302 | ||
5d4f98a2 YZ |
303 | #define BTRFS_HEADER_FLAG_WRITTEN (1ULL << 0) |
304 | #define BTRFS_HEADER_FLAG_RELOC (1ULL << 1) | |
acce952b | 305 | |
306 | /* | |
307 | * File system states | |
308 | */ | |
309 | ||
310 | /* Errors detected */ | |
311 | #define BTRFS_SUPER_FLAG_ERROR (1ULL << 2) | |
312 | ||
5d4f98a2 YZ |
313 | #define BTRFS_SUPER_FLAG_SEEDING (1ULL << 32) |
314 | #define BTRFS_SUPER_FLAG_METADUMP (1ULL << 33) | |
315 | ||
316 | #define BTRFS_BACKREF_REV_MAX 256 | |
317 | #define BTRFS_BACKREF_REV_SHIFT 56 | |
318 | #define BTRFS_BACKREF_REV_MASK (((u64)BTRFS_BACKREF_REV_MAX - 1) << \ | |
319 | BTRFS_BACKREF_REV_SHIFT) | |
320 | ||
321 | #define BTRFS_OLD_BACKREF_REV 0 | |
322 | #define BTRFS_MIXED_BACKREF_REV 1 | |
63b10fc4 | 323 | |
fec577fb CM |
324 | /* |
325 | * every tree block (leaf or node) starts with this header. | |
326 | */ | |
bb492bb0 | 327 | struct btrfs_header { |
e17cade2 | 328 | /* these first four must match the super block */ |
f254e52c | 329 | u8 csum[BTRFS_CSUM_SIZE]; |
5f39d397 | 330 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 331 | __le64 bytenr; /* which block this node is supposed to live in */ |
63b10fc4 | 332 | __le64 flags; |
e17cade2 CM |
333 | |
334 | /* allowed to be different from the super from here on down */ | |
335 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; | |
7f5c1516 | 336 | __le64 generation; |
4d775673 | 337 | __le64 owner; |
5f39d397 | 338 | __le32 nritems; |
9a6f11ed | 339 | u8 level; |
eb60ceac CM |
340 | } __attribute__ ((__packed__)); |
341 | ||
5f39d397 | 342 | #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->nodesize - \ |
d397712b CM |
343 | sizeof(struct btrfs_header)) / \ |
344 | sizeof(struct btrfs_key_ptr)) | |
123abc88 | 345 | #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) |
5f39d397 | 346 | #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->leafsize)) |
236454df CM |
347 | #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
348 | sizeof(struct btrfs_item) - \ | |
349 | sizeof(struct btrfs_file_extent_item)) | |
f34f57a3 YZ |
350 | #define BTRFS_MAX_XATTR_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
351 | sizeof(struct btrfs_item) -\ | |
352 | sizeof(struct btrfs_dir_item)) | |
eb60ceac | 353 | |
0b86a832 CM |
354 | |
355 | /* | |
356 | * this is a very generous portion of the super block, giving us | |
357 | * room to translate 14 chunks with 3 stripes each. | |
358 | */ | |
359 | #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 | |
7ae9c09d | 360 | #define BTRFS_LABEL_SIZE 256 |
0b86a832 | 361 | |
fec577fb CM |
362 | /* |
363 | * the super block basically lists the main trees of the FS | |
364 | * it currently lacks any block count etc etc | |
365 | */ | |
234b63a0 | 366 | struct btrfs_super_block { |
f254e52c | 367 | u8 csum[BTRFS_CSUM_SIZE]; |
63b10fc4 | 368 | /* the first 4 fields must match struct btrfs_header */ |
2b82032c | 369 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 370 | __le64 bytenr; /* this block number */ |
63b10fc4 | 371 | __le64 flags; |
e17cade2 CM |
372 | |
373 | /* allowed to be different from the btrfs_header from here own down */ | |
3768f368 | 374 | __le64 magic; |
3768f368 CM |
375 | __le64 generation; |
376 | __le64 root; | |
0b86a832 | 377 | __le64 chunk_root; |
e02119d5 | 378 | __le64 log_root; |
c3027eb5 CM |
379 | |
380 | /* this will help find the new super based on the log root */ | |
381 | __le64 log_root_transid; | |
db94535d CM |
382 | __le64 total_bytes; |
383 | __le64 bytes_used; | |
2e635a27 | 384 | __le64 root_dir_objectid; |
8a4b83cc | 385 | __le64 num_devices; |
5f39d397 CM |
386 | __le32 sectorsize; |
387 | __le32 nodesize; | |
388 | __le32 leafsize; | |
87ee04eb | 389 | __le32 stripesize; |
0b86a832 | 390 | __le32 sys_chunk_array_size; |
84234f3a | 391 | __le64 chunk_root_generation; |
f2b636e8 JB |
392 | __le64 compat_flags; |
393 | __le64 compat_ro_flags; | |
394 | __le64 incompat_flags; | |
607d432d | 395 | __le16 csum_type; |
db94535d | 396 | u8 root_level; |
0b86a832 | 397 | u8 chunk_root_level; |
e02119d5 | 398 | u8 log_root_level; |
0d81ba5d | 399 | struct btrfs_dev_item dev_item; |
c3027eb5 | 400 | |
7ae9c09d | 401 | char label[BTRFS_LABEL_SIZE]; |
c3027eb5 | 402 | |
0af3d00b JB |
403 | __le64 cache_generation; |
404 | ||
c3027eb5 | 405 | /* future expansion */ |
0af3d00b | 406 | __le64 reserved[31]; |
0b86a832 | 407 | u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; |
cfaa7295 CM |
408 | } __attribute__ ((__packed__)); |
409 | ||
f2b636e8 JB |
410 | /* |
411 | * Compat flags that we support. If any incompat flags are set other than the | |
412 | * ones specified below then we will fail to mount | |
413 | */ | |
5d4f98a2 | 414 | #define BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF (1ULL << 0) |
0af3d00b | 415 | #define BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL (1ULL << 1) |
67377734 | 416 | #define BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS (1ULL << 2) |
a6fa6fae | 417 | #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO (1ULL << 3) |
5d4f98a2 YZ |
418 | |
419 | #define BTRFS_FEATURE_COMPAT_SUPP 0ULL | |
420 | #define BTRFS_FEATURE_COMPAT_RO_SUPP 0ULL | |
0af3d00b JB |
421 | #define BTRFS_FEATURE_INCOMPAT_SUPP \ |
422 | (BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF | \ | |
67377734 | 423 | BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL | \ |
a6fa6fae LZ |
424 | BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS | \ |
425 | BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO) | |
f2b636e8 | 426 | |
fec577fb | 427 | /* |
62e2749e | 428 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
429 | * the item in the leaf (relative to the start of the data area) |
430 | */ | |
0783fcfc | 431 | struct btrfs_item { |
e2fa7227 | 432 | struct btrfs_disk_key key; |
123abc88 | 433 | __le32 offset; |
5f39d397 | 434 | __le32 size; |
eb60ceac CM |
435 | } __attribute__ ((__packed__)); |
436 | ||
fec577fb CM |
437 | /* |
438 | * leaves have an item area and a data area: | |
439 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
440 | * | |
441 | * The data is separate from the items to get the keys closer together | |
442 | * during searches. | |
443 | */ | |
234b63a0 | 444 | struct btrfs_leaf { |
bb492bb0 | 445 | struct btrfs_header header; |
123abc88 | 446 | struct btrfs_item items[]; |
eb60ceac CM |
447 | } __attribute__ ((__packed__)); |
448 | ||
fec577fb CM |
449 | /* |
450 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
451 | * other blocks | |
452 | */ | |
123abc88 CM |
453 | struct btrfs_key_ptr { |
454 | struct btrfs_disk_key key; | |
455 | __le64 blockptr; | |
74493f7a | 456 | __le64 generation; |
123abc88 CM |
457 | } __attribute__ ((__packed__)); |
458 | ||
234b63a0 | 459 | struct btrfs_node { |
bb492bb0 | 460 | struct btrfs_header header; |
123abc88 | 461 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
462 | } __attribute__ ((__packed__)); |
463 | ||
fec577fb | 464 | /* |
234b63a0 CM |
465 | * btrfs_paths remember the path taken from the root down to the leaf. |
466 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
467 | * to any other levels that are present. |
468 | * | |
469 | * The slots array records the index of the item or block pointer | |
470 | * used while walking the tree. | |
471 | */ | |
234b63a0 | 472 | struct btrfs_path { |
5f39d397 | 473 | struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 474 | int slots[BTRFS_MAX_LEVEL]; |
925baedd CM |
475 | /* if there is real range locking, this locks field will change */ |
476 | int locks[BTRFS_MAX_LEVEL]; | |
3c69faec | 477 | int reada; |
925baedd | 478 | /* keep some upper locks as we walk down */ |
6702ed49 | 479 | int lowest_level; |
459931ec CM |
480 | |
481 | /* | |
482 | * set by btrfs_split_item, tells search_slot to keep all locks | |
483 | * and to force calls to keep space in the nodes | |
484 | */ | |
b9473439 CM |
485 | unsigned int search_for_split:1; |
486 | unsigned int keep_locks:1; | |
487 | unsigned int skip_locking:1; | |
488 | unsigned int leave_spinning:1; | |
5d4f98a2 | 489 | unsigned int search_commit_root:1; |
eb60ceac | 490 | }; |
5de08d7d | 491 | |
62e2749e CM |
492 | /* |
493 | * items in the extent btree are used to record the objectid of the | |
494 | * owner of the block and the number of references | |
495 | */ | |
5d4f98a2 | 496 | |
62e2749e | 497 | struct btrfs_extent_item { |
5d4f98a2 YZ |
498 | __le64 refs; |
499 | __le64 generation; | |
500 | __le64 flags; | |
501 | } __attribute__ ((__packed__)); | |
502 | ||
503 | struct btrfs_extent_item_v0 { | |
62e2749e | 504 | __le32 refs; |
74493f7a CM |
505 | } __attribute__ ((__packed__)); |
506 | ||
5d4f98a2 YZ |
507 | #define BTRFS_MAX_EXTENT_ITEM_SIZE(r) ((BTRFS_LEAF_DATA_SIZE(r) >> 4) - \ |
508 | sizeof(struct btrfs_item)) | |
509 | ||
510 | #define BTRFS_EXTENT_FLAG_DATA (1ULL << 0) | |
511 | #define BTRFS_EXTENT_FLAG_TREE_BLOCK (1ULL << 1) | |
512 | ||
513 | /* following flags only apply to tree blocks */ | |
514 | ||
515 | /* use full backrefs for extent pointers in the block */ | |
516 | #define BTRFS_BLOCK_FLAG_FULL_BACKREF (1ULL << 8) | |
517 | ||
a2de733c AJ |
518 | /* |
519 | * this flag is only used internally by scrub and may be changed at any time | |
520 | * it is only declared here to avoid collisions | |
521 | */ | |
522 | #define BTRFS_EXTENT_FLAG_SUPER (1ULL << 48) | |
523 | ||
5d4f98a2 YZ |
524 | struct btrfs_tree_block_info { |
525 | struct btrfs_disk_key key; | |
526 | u8 level; | |
527 | } __attribute__ ((__packed__)); | |
528 | ||
529 | struct btrfs_extent_data_ref { | |
530 | __le64 root; | |
531 | __le64 objectid; | |
532 | __le64 offset; | |
533 | __le32 count; | |
534 | } __attribute__ ((__packed__)); | |
535 | ||
536 | struct btrfs_shared_data_ref { | |
537 | __le32 count; | |
538 | } __attribute__ ((__packed__)); | |
539 | ||
540 | struct btrfs_extent_inline_ref { | |
541 | u8 type; | |
1bec1aed | 542 | __le64 offset; |
5d4f98a2 YZ |
543 | } __attribute__ ((__packed__)); |
544 | ||
545 | /* old style backrefs item */ | |
546 | struct btrfs_extent_ref_v0 { | |
74493f7a CM |
547 | __le64 root; |
548 | __le64 generation; | |
549 | __le64 objectid; | |
5d4f98a2 | 550 | __le32 count; |
62e2749e CM |
551 | } __attribute__ ((__packed__)); |
552 | ||
5d4f98a2 | 553 | |
0b86a832 CM |
554 | /* dev extents record free space on individual devices. The owner |
555 | * field points back to the chunk allocation mapping tree that allocated | |
e17cade2 | 556 | * the extent. The chunk tree uuid field is a way to double check the owner |
0b86a832 CM |
557 | */ |
558 | struct btrfs_dev_extent { | |
e17cade2 CM |
559 | __le64 chunk_tree; |
560 | __le64 chunk_objectid; | |
561 | __le64 chunk_offset; | |
0b86a832 | 562 | __le64 length; |
e17cade2 | 563 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
564 | } __attribute__ ((__packed__)); |
565 | ||
3954401f | 566 | struct btrfs_inode_ref { |
aec7477b | 567 | __le64 index; |
3954401f CM |
568 | __le16 name_len; |
569 | /* name goes here */ | |
570 | } __attribute__ ((__packed__)); | |
571 | ||
0b86a832 | 572 | struct btrfs_timespec { |
f254e52c | 573 | __le64 sec; |
1e1d2701 CM |
574 | __le32 nsec; |
575 | } __attribute__ ((__packed__)); | |
576 | ||
95029d7d | 577 | enum btrfs_compression_type { |
261507a0 LZ |
578 | BTRFS_COMPRESS_NONE = 0, |
579 | BTRFS_COMPRESS_ZLIB = 1, | |
a6fa6fae LZ |
580 | BTRFS_COMPRESS_LZO = 2, |
581 | BTRFS_COMPRESS_TYPES = 2, | |
582 | BTRFS_COMPRESS_LAST = 3, | |
95029d7d | 583 | }; |
c8b97818 | 584 | |
1e1d2701 | 585 | struct btrfs_inode_item { |
e02119d5 | 586 | /* nfs style generation number */ |
1e1d2701 | 587 | __le64 generation; |
e02119d5 CM |
588 | /* transid that last touched this inode */ |
589 | __le64 transid; | |
1e1d2701 | 590 | __le64 size; |
a76a3cd4 | 591 | __le64 nbytes; |
31f3c99b | 592 | __le64 block_group; |
1e1d2701 CM |
593 | __le32 nlink; |
594 | __le32 uid; | |
595 | __le32 gid; | |
596 | __le32 mode; | |
0b86a832 | 597 | __le64 rdev; |
f2b636e8 | 598 | __le64 flags; |
c8b97818 | 599 | |
c3027eb5 CM |
600 | /* modification sequence number for NFS */ |
601 | __le64 sequence; | |
602 | ||
603 | /* | |
604 | * a little future expansion, for more than this we can | |
605 | * just grow the inode item and version it | |
606 | */ | |
607 | __le64 reserved[4]; | |
0b86a832 CM |
608 | struct btrfs_timespec atime; |
609 | struct btrfs_timespec ctime; | |
610 | struct btrfs_timespec mtime; | |
611 | struct btrfs_timespec otime; | |
1e1d2701 CM |
612 | } __attribute__ ((__packed__)); |
613 | ||
e02119d5 CM |
614 | struct btrfs_dir_log_item { |
615 | __le64 end; | |
616 | } __attribute__ ((__packed__)); | |
617 | ||
62e2749e | 618 | struct btrfs_dir_item { |
d6e4a428 | 619 | struct btrfs_disk_key location; |
e02119d5 | 620 | __le64 transid; |
5103e947 | 621 | __le16 data_len; |
a8a2ee0c | 622 | __le16 name_len; |
62e2749e CM |
623 | u8 type; |
624 | } __attribute__ ((__packed__)); | |
625 | ||
b83cc969 LZ |
626 | #define BTRFS_ROOT_SUBVOL_RDONLY (1ULL << 0) |
627 | ||
62e2749e | 628 | struct btrfs_root_item { |
d6e4a428 | 629 | struct btrfs_inode_item inode; |
84234f3a | 630 | __le64 generation; |
d6e4a428 | 631 | __le64 root_dirid; |
db94535d CM |
632 | __le64 bytenr; |
633 | __le64 byte_limit; | |
634 | __le64 bytes_used; | |
80ff3856 | 635 | __le64 last_snapshot; |
f2b636e8 | 636 | __le64 flags; |
62e2749e | 637 | __le32 refs; |
5eda7b5e CM |
638 | struct btrfs_disk_key drop_progress; |
639 | u8 drop_level; | |
db94535d | 640 | u8 level; |
9f5fae2f | 641 | } __attribute__ ((__packed__)); |
62e2749e | 642 | |
0660b5af CM |
643 | /* |
644 | * this is used for both forward and backward root refs | |
645 | */ | |
646 | struct btrfs_root_ref { | |
647 | __le64 dirid; | |
648 | __le64 sequence; | |
649 | __le16 name_len; | |
650 | } __attribute__ ((__packed__)); | |
651 | ||
d899e052 YZ |
652 | #define BTRFS_FILE_EXTENT_INLINE 0 |
653 | #define BTRFS_FILE_EXTENT_REG 1 | |
654 | #define BTRFS_FILE_EXTENT_PREALLOC 2 | |
236454df | 655 | |
9f5fae2f | 656 | struct btrfs_file_extent_item { |
c8b97818 CM |
657 | /* |
658 | * transaction id that created this extent | |
659 | */ | |
71951f35 | 660 | __le64 generation; |
c8b97818 CM |
661 | /* |
662 | * max number of bytes to hold this extent in ram | |
663 | * when we split a compressed extent we can't know how big | |
664 | * each of the resulting pieces will be. So, this is | |
665 | * an upper limit on the size of the extent in ram instead of | |
666 | * an exact limit. | |
667 | */ | |
668 | __le64 ram_bytes; | |
669 | ||
670 | /* | |
671 | * 32 bits for the various ways we might encode the data, | |
672 | * including compression and encryption. If any of these | |
673 | * are set to something a given disk format doesn't understand | |
674 | * it is treated like an incompat flag for reading and writing, | |
675 | * but not for stat. | |
676 | */ | |
677 | u8 compression; | |
678 | u8 encryption; | |
679 | __le16 other_encoding; /* spare for later use */ | |
680 | ||
681 | /* are we inline data or a real extent? */ | |
236454df | 682 | u8 type; |
c8b97818 | 683 | |
9f5fae2f CM |
684 | /* |
685 | * disk space consumed by the extent, checksum blocks are included | |
686 | * in these numbers | |
687 | */ | |
db94535d CM |
688 | __le64 disk_bytenr; |
689 | __le64 disk_num_bytes; | |
9f5fae2f | 690 | /* |
dee26a9f | 691 | * the logical offset in file blocks (no csums) |
9f5fae2f CM |
692 | * this extent record is for. This allows a file extent to point |
693 | * into the middle of an existing extent on disk, sharing it | |
694 | * between two snapshots (useful if some bytes in the middle of the | |
695 | * extent have changed | |
696 | */ | |
697 | __le64 offset; | |
698 | /* | |
c8b97818 CM |
699 | * the logical number of file blocks (no csums included). This |
700 | * always reflects the size uncompressed and without encoding. | |
9f5fae2f | 701 | */ |
db94535d | 702 | __le64 num_bytes; |
c8b97818 | 703 | |
9f5fae2f CM |
704 | } __attribute__ ((__packed__)); |
705 | ||
f254e52c | 706 | struct btrfs_csum_item { |
509659cd | 707 | u8 csum; |
f254e52c CM |
708 | } __attribute__ ((__packed__)); |
709 | ||
0b86a832 CM |
710 | /* different types of block groups (and chunks) */ |
711 | #define BTRFS_BLOCK_GROUP_DATA (1 << 0) | |
712 | #define BTRFS_BLOCK_GROUP_SYSTEM (1 << 1) | |
713 | #define BTRFS_BLOCK_GROUP_METADATA (1 << 2) | |
593060d7 | 714 | #define BTRFS_BLOCK_GROUP_RAID0 (1 << 3) |
8790d502 | 715 | #define BTRFS_BLOCK_GROUP_RAID1 (1 << 4) |
611f0e00 | 716 | #define BTRFS_BLOCK_GROUP_DUP (1 << 5) |
321aecc6 | 717 | #define BTRFS_BLOCK_GROUP_RAID10 (1 << 6) |
b742bb82 | 718 | #define BTRFS_NR_RAID_TYPES 5 |
1e2677e0 | 719 | |
9078a3e1 CM |
720 | struct btrfs_block_group_item { |
721 | __le64 used; | |
0b86a832 CM |
722 | __le64 chunk_objectid; |
723 | __le64 flags; | |
9078a3e1 CM |
724 | } __attribute__ ((__packed__)); |
725 | ||
6324fbf3 CM |
726 | struct btrfs_space_info { |
727 | u64 flags; | |
6a63209f | 728 | |
89a55897 JB |
729 | u64 total_bytes; /* total bytes in the space, |
730 | this doesn't take mirrors into account */ | |
b742bb82 | 731 | u64 bytes_used; /* total bytes used, |
e9c54999 | 732 | this doesn't take mirrors into account */ |
6a63209f JB |
733 | u64 bytes_pinned; /* total bytes pinned, will be freed when the |
734 | transaction finishes */ | |
735 | u64 bytes_reserved; /* total bytes the allocator has reserved for | |
736 | current allocations */ | |
737 | u64 bytes_readonly; /* total bytes that are read only */ | |
8929ecfa | 738 | |
6a63209f | 739 | u64 bytes_may_use; /* number of bytes that may be used for |
9ed74f2d | 740 | delalloc/allocations */ |
b742bb82 | 741 | u64 disk_used; /* total bytes used on disk */ |
89a55897 JB |
742 | u64 disk_total; /* total bytes on disk, takes mirrors into |
743 | account */ | |
6a63209f | 744 | |
36e39c40 CM |
745 | /* |
746 | * we bump reservation progress every time we decrement | |
747 | * bytes_reserved. This way people waiting for reservations | |
748 | * know something good has happened and they can check | |
749 | * for progress. The number here isn't to be trusted, it | |
750 | * just shows reclaim activity | |
751 | */ | |
752 | unsigned long reservation_progress; | |
753 | ||
4ea02885 | 754 | unsigned int full:1; /* indicates that we cannot allocate any more |
6a63209f | 755 | chunks for this space */ |
4ea02885 | 756 | unsigned int chunk_alloc:1; /* set if we are allocating a chunk */ |
6d74119f | 757 | |
fdb5effd JB |
758 | unsigned int flush:1; /* set if we are trying to make space */ |
759 | ||
4ea02885 DS |
760 | unsigned int force_alloc; /* set if we need to force a chunk |
761 | alloc for this space */ | |
6a63209f | 762 | |
6324fbf3 | 763 | struct list_head list; |
0f9dd46c JB |
764 | |
765 | /* for block groups in our same type */ | |
b742bb82 | 766 | struct list_head block_groups[BTRFS_NR_RAID_TYPES]; |
0f9dd46c | 767 | spinlock_t lock; |
80eb234a | 768 | struct rw_semaphore groups_sem; |
fdb5effd | 769 | wait_queue_head_t wait; |
0f9dd46c JB |
770 | }; |
771 | ||
f0486c68 YZ |
772 | struct btrfs_block_rsv { |
773 | u64 size; | |
774 | u64 reserved; | |
775 | u64 freed[2]; | |
776 | struct btrfs_space_info *space_info; | |
777 | struct list_head list; | |
778 | spinlock_t lock; | |
779 | atomic_t usage; | |
780 | unsigned int priority:8; | |
781 | unsigned int durable:1; | |
782 | unsigned int refill_used:1; | |
783 | unsigned int full:1; | |
784 | }; | |
785 | ||
fa9c0d79 CM |
786 | /* |
787 | * free clusters are used to claim free space in relatively large chunks, | |
788 | * allowing us to do less seeky writes. They are used for all metadata | |
789 | * allocations and data allocations in ssd mode. | |
790 | */ | |
791 | struct btrfs_free_cluster { | |
792 | spinlock_t lock; | |
793 | spinlock_t refill_lock; | |
794 | struct rb_root root; | |
795 | ||
796 | /* largest extent in this cluster */ | |
797 | u64 max_size; | |
798 | ||
799 | /* first extent starting offset */ | |
800 | u64 window_start; | |
801 | ||
802 | struct btrfs_block_group_cache *block_group; | |
803 | /* | |
804 | * when a cluster is allocated from a block group, we put the | |
805 | * cluster onto a list in the block group so that it can | |
806 | * be freed before the block group is freed. | |
807 | */ | |
808 | struct list_head block_group_list; | |
6324fbf3 CM |
809 | }; |
810 | ||
817d52f8 JB |
811 | enum btrfs_caching_type { |
812 | BTRFS_CACHE_NO = 0, | |
813 | BTRFS_CACHE_STARTED = 1, | |
814 | BTRFS_CACHE_FINISHED = 2, | |
815 | }; | |
816 | ||
0af3d00b JB |
817 | enum btrfs_disk_cache_state { |
818 | BTRFS_DC_WRITTEN = 0, | |
819 | BTRFS_DC_ERROR = 1, | |
820 | BTRFS_DC_CLEAR = 2, | |
821 | BTRFS_DC_SETUP = 3, | |
822 | BTRFS_DC_NEED_WRITE = 4, | |
823 | }; | |
824 | ||
11833d66 YZ |
825 | struct btrfs_caching_control { |
826 | struct list_head list; | |
827 | struct mutex mutex; | |
828 | wait_queue_head_t wait; | |
bab39bf9 | 829 | struct btrfs_work work; |
11833d66 YZ |
830 | struct btrfs_block_group_cache *block_group; |
831 | u64 progress; | |
832 | atomic_t count; | |
833 | }; | |
834 | ||
9078a3e1 CM |
835 | struct btrfs_block_group_cache { |
836 | struct btrfs_key key; | |
837 | struct btrfs_block_group_item item; | |
817d52f8 | 838 | struct btrfs_fs_info *fs_info; |
0af3d00b | 839 | struct inode *inode; |
c286ac48 | 840 | spinlock_t lock; |
324ae4df | 841 | u64 pinned; |
e8569813 | 842 | u64 reserved; |
f0486c68 | 843 | u64 reserved_pinned; |
1b2da372 | 844 | u64 bytes_super; |
0b86a832 | 845 | u64 flags; |
96303081 | 846 | u64 sectorsize; |
0410c94a MK |
847 | unsigned int ro:1; |
848 | unsigned int dirty:1; | |
849 | unsigned int iref:1; | |
0af3d00b JB |
850 | |
851 | int disk_cache_state; | |
0f9dd46c | 852 | |
817d52f8 | 853 | /* cache tracking stuff */ |
817d52f8 | 854 | int cached; |
11833d66 YZ |
855 | struct btrfs_caching_control *caching_ctl; |
856 | u64 last_byte_to_unpin; | |
817d52f8 | 857 | |
0f9dd46c JB |
858 | struct btrfs_space_info *space_info; |
859 | ||
860 | /* free space cache stuff */ | |
34d52cb6 | 861 | struct btrfs_free_space_ctl *free_space_ctl; |
0f9dd46c JB |
862 | |
863 | /* block group cache stuff */ | |
864 | struct rb_node cache_node; | |
865 | ||
866 | /* for block groups in the same raid type */ | |
867 | struct list_head list; | |
d2fb3437 YZ |
868 | |
869 | /* usage count */ | |
870 | atomic_t count; | |
fa9c0d79 CM |
871 | |
872 | /* List of struct btrfs_free_clusters for this block group. | |
873 | * Today it will only have one thing on it, but that may change | |
874 | */ | |
875 | struct list_head cluster_list; | |
9078a3e1 | 876 | }; |
0b86a832 | 877 | |
5d4f98a2 | 878 | struct reloc_control; |
0b86a832 | 879 | struct btrfs_device; |
8a4b83cc | 880 | struct btrfs_fs_devices; |
16cdcec7 | 881 | struct btrfs_delayed_root; |
9f5fae2f | 882 | struct btrfs_fs_info { |
5f39d397 | 883 | u8 fsid[BTRFS_FSID_SIZE]; |
e17cade2 | 884 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
62e2749e CM |
885 | struct btrfs_root *extent_root; |
886 | struct btrfs_root *tree_root; | |
0b86a832 CM |
887 | struct btrfs_root *chunk_root; |
888 | struct btrfs_root *dev_root; | |
3de4586c | 889 | struct btrfs_root *fs_root; |
d20f7043 | 890 | struct btrfs_root *csum_root; |
e02119d5 CM |
891 | |
892 | /* the log root tree is a directory of all the other log roots */ | |
893 | struct btrfs_root *log_root_tree; | |
4df27c4d YZ |
894 | |
895 | spinlock_t fs_roots_radix_lock; | |
0f7d52f4 | 896 | struct radix_tree_root fs_roots_radix; |
1a5bc167 | 897 | |
0f9dd46c JB |
898 | /* block group cache stuff */ |
899 | spinlock_t block_group_cache_lock; | |
900 | struct rb_root block_group_cache_tree; | |
901 | ||
11833d66 YZ |
902 | struct extent_io_tree freed_extents[2]; |
903 | struct extent_io_tree *pinned_extents; | |
1a5bc167 | 904 | |
0b86a832 CM |
905 | /* logical->physical extent mapping */ |
906 | struct btrfs_mapping_tree mapping_tree; | |
907 | ||
16cdcec7 MX |
908 | /* |
909 | * block reservation for extent, checksum, root tree and | |
910 | * delayed dir index item | |
911 | */ | |
f0486c68 YZ |
912 | struct btrfs_block_rsv global_block_rsv; |
913 | /* block reservation for delay allocation */ | |
914 | struct btrfs_block_rsv delalloc_block_rsv; | |
915 | /* block reservation for metadata operations */ | |
916 | struct btrfs_block_rsv trans_block_rsv; | |
917 | /* block reservation for chunk tree */ | |
918 | struct btrfs_block_rsv chunk_block_rsv; | |
919 | ||
920 | struct btrfs_block_rsv empty_block_rsv; | |
921 | ||
922 | /* list of block reservations that cross multiple transactions */ | |
923 | struct list_head durable_block_rsv_list; | |
924 | ||
925 | struct mutex durable_block_rsv_mutex; | |
926 | ||
293ffd5f | 927 | u64 generation; |
15ee9bc7 | 928 | u64 last_trans_committed; |
12fcfd22 CM |
929 | |
930 | /* | |
931 | * this is updated to the current trans every time a full commit | |
932 | * is required instead of the faster short fsync log commits | |
933 | */ | |
934 | u64 last_trans_log_full_commit; | |
261507a0 LZ |
935 | unsigned long mount_opt:20; |
936 | unsigned long compress_type:4; | |
6f568d35 | 937 | u64 max_inline; |
8f662a76 | 938 | u64 alloc_start; |
79154b1b | 939 | struct btrfs_transaction *running_transaction; |
e6dcd2dc | 940 | wait_queue_head_t transaction_throttle; |
f9295749 | 941 | wait_queue_head_t transaction_wait; |
bb9c12c9 | 942 | wait_queue_head_t transaction_blocked_wait; |
771ed689 | 943 | wait_queue_head_t async_submit_wait; |
e02119d5 | 944 | |
4b52dff6 | 945 | struct btrfs_super_block super_copy; |
a061fc8d | 946 | struct btrfs_super_block super_for_commit; |
0b86a832 | 947 | struct block_device *__bdev; |
e20d96d6 | 948 | struct super_block *sb; |
d98237b3 | 949 | struct inode *btree_inode; |
04160088 | 950 | struct backing_dev_info bdi; |
e02119d5 | 951 | struct mutex tree_log_mutex; |
a74a4b97 CM |
952 | struct mutex transaction_kthread_mutex; |
953 | struct mutex cleaner_mutex; | |
925baedd | 954 | struct mutex chunk_mutex; |
7d9eb12c | 955 | struct mutex volume_mutex; |
5a3f23d5 CM |
956 | /* |
957 | * this protects the ordered operations list only while we are | |
958 | * processing all of the entries on it. This way we make | |
959 | * sure the commit code doesn't find the list temporarily empty | |
960 | * because another function happens to be doing non-waiting preflush | |
961 | * before jumping into the main commit. | |
962 | */ | |
963 | struct mutex ordered_operations_mutex; | |
11833d66 | 964 | struct rw_semaphore extent_commit_sem; |
5a3f23d5 | 965 | |
c71bf099 | 966 | struct rw_semaphore cleanup_work_sem; |
76dda93c | 967 | |
c71bf099 | 968 | struct rw_semaphore subvol_sem; |
76dda93c YZ |
969 | struct srcu_struct subvol_srcu; |
970 | ||
a4abeea4 | 971 | spinlock_t trans_lock; |
7585717f CM |
972 | /* |
973 | * the reloc mutex goes with the trans lock, it is taken | |
974 | * during commit to protect us from the relocation code | |
975 | */ | |
976 | struct mutex reloc_mutex; | |
977 | ||
8fd17795 | 978 | struct list_head trans_list; |
19c00ddc | 979 | struct list_head hashers; |
facda1e7 | 980 | struct list_head dead_roots; |
11833d66 | 981 | struct list_head caching_block_groups; |
e02119d5 | 982 | |
24bbcf04 YZ |
983 | spinlock_t delayed_iput_lock; |
984 | struct list_head delayed_iputs; | |
985 | ||
cb03c743 | 986 | atomic_t nr_async_submits; |
8c8bee1d | 987 | atomic_t async_submit_draining; |
0986fe9e | 988 | atomic_t nr_async_bios; |
771ed689 | 989 | atomic_t async_delalloc_pages; |
a4abeea4 | 990 | atomic_t open_ioctl_trans; |
ce9adaa5 | 991 | |
3eaa2885 CM |
992 | /* |
993 | * this is used by the balancing code to wait for all the pending | |
994 | * ordered extents | |
995 | */ | |
996 | spinlock_t ordered_extent_lock; | |
5a3f23d5 CM |
997 | |
998 | /* | |
999 | * all of the data=ordered extents pending writeback | |
1000 | * these can span multiple transactions and basically include | |
1001 | * every dirty data page that isn't from nodatacow | |
1002 | */ | |
3eaa2885 | 1003 | struct list_head ordered_extents; |
5a3f23d5 CM |
1004 | |
1005 | /* | |
1006 | * all of the inodes that have delalloc bytes. It is possible for | |
1007 | * this list to be empty even when there is still dirty data=ordered | |
1008 | * extents waiting to finish IO. | |
1009 | */ | |
ea8c2819 | 1010 | struct list_head delalloc_inodes; |
3eaa2885 | 1011 | |
5a3f23d5 CM |
1012 | /* |
1013 | * special rename and truncate targets that must be on disk before | |
1014 | * we're allowed to commit. This is basically the ext3 style | |
1015 | * data=ordered list. | |
1016 | */ | |
1017 | struct list_head ordered_operations; | |
1018 | ||
8b712842 CM |
1019 | /* |
1020 | * there is a pool of worker threads for checksumming during writes | |
1021 | * and a pool for checksumming after reads. This is because readers | |
1022 | * can run with FS locks held, and the writers may be waiting for | |
1023 | * those locks. We don't want ordering in the pending list to cause | |
1024 | * deadlocks, and so the two are serviced separately. | |
1cc127b5 CM |
1025 | * |
1026 | * A third pool does submit_bio to avoid deadlocking with the other | |
1027 | * two | |
8b712842 | 1028 | */ |
61d92c32 | 1029 | struct btrfs_workers generic_worker; |
8b712842 | 1030 | struct btrfs_workers workers; |
771ed689 | 1031 | struct btrfs_workers delalloc_workers; |
8b712842 | 1032 | struct btrfs_workers endio_workers; |
d20f7043 | 1033 | struct btrfs_workers endio_meta_workers; |
cad321ad | 1034 | struct btrfs_workers endio_meta_write_workers; |
e6dcd2dc | 1035 | struct btrfs_workers endio_write_workers; |
0cb59c99 | 1036 | struct btrfs_workers endio_freespace_worker; |
1cc127b5 | 1037 | struct btrfs_workers submit_workers; |
bab39bf9 JB |
1038 | struct btrfs_workers caching_workers; |
1039 | ||
247e743c CM |
1040 | /* |
1041 | * fixup workers take dirty pages that didn't properly go through | |
1042 | * the cow mechanism and make them safe to write. It happens | |
1043 | * for the sys_munmap function call path | |
1044 | */ | |
1045 | struct btrfs_workers fixup_workers; | |
16cdcec7 | 1046 | struct btrfs_workers delayed_workers; |
a74a4b97 CM |
1047 | struct task_struct *transaction_kthread; |
1048 | struct task_struct *cleaner_kthread; | |
4543df7e | 1049 | int thread_pool_size; |
8b712842 | 1050 | |
58176a96 JB |
1051 | struct kobject super_kobj; |
1052 | struct completion kobj_unregister; | |
e66f709b | 1053 | int do_barriers; |
facda1e7 | 1054 | int closing; |
e02119d5 | 1055 | int log_root_recovering; |
a22285a6 | 1056 | int enospc_unlink; |
a4abeea4 | 1057 | int trans_no_join; |
9f5fae2f | 1058 | |
324ae4df | 1059 | u64 total_pinned; |
b9473439 CM |
1060 | |
1061 | /* protected by the delalloc lock, used to keep from writing | |
1062 | * metadata until there is a nice batch | |
1063 | */ | |
1064 | u64 dirty_metadata_bytes; | |
0b86a832 CM |
1065 | struct list_head dirty_cowonly_roots; |
1066 | ||
8a4b83cc | 1067 | struct btrfs_fs_devices *fs_devices; |
4184ea7f CM |
1068 | |
1069 | /* | |
1070 | * the space_info list is almost entirely read only. It only changes | |
1071 | * when we add a new raid type to the FS, and that happens | |
1072 | * very rarely. RCU is used to protect it. | |
1073 | */ | |
6324fbf3 | 1074 | struct list_head space_info; |
4184ea7f | 1075 | |
5d4f98a2 YZ |
1076 | struct reloc_control *reloc_ctl; |
1077 | ||
1832a6d5 CM |
1078 | spinlock_t delalloc_lock; |
1079 | u64 delalloc_bytes; | |
fa9c0d79 CM |
1080 | |
1081 | /* data_alloc_cluster is only used in ssd mode */ | |
1082 | struct btrfs_free_cluster data_alloc_cluster; | |
1083 | ||
1084 | /* all metadata allocations go through this cluster */ | |
1085 | struct btrfs_free_cluster meta_alloc_cluster; | |
d18a2c44 | 1086 | |
4cb5300b CM |
1087 | /* auto defrag inodes go here */ |
1088 | spinlock_t defrag_inodes_lock; | |
1089 | struct rb_root defrag_inodes; | |
1090 | atomic_t defrag_running; | |
1091 | ||
31153d81 YZ |
1092 | spinlock_t ref_cache_lock; |
1093 | u64 total_ref_cache_size; | |
31153d81 | 1094 | |
d18a2c44 CM |
1095 | u64 avail_data_alloc_bits; |
1096 | u64 avail_metadata_alloc_bits; | |
1097 | u64 avail_system_alloc_bits; | |
1098 | u64 data_alloc_profile; | |
1099 | u64 metadata_alloc_profile; | |
1100 | u64 system_alloc_profile; | |
788f20eb | 1101 | |
97e728d4 JB |
1102 | unsigned data_chunk_allocations; |
1103 | unsigned metadata_ratio; | |
1104 | ||
788f20eb | 1105 | void *bdev_holder; |
acce952b | 1106 | |
a2de733c AJ |
1107 | /* private scrub information */ |
1108 | struct mutex scrub_lock; | |
1109 | atomic_t scrubs_running; | |
1110 | atomic_t scrub_pause_req; | |
1111 | atomic_t scrubs_paused; | |
1112 | atomic_t scrub_cancel_req; | |
1113 | wait_queue_head_t scrub_pause_wait; | |
1114 | struct rw_semaphore scrub_super_lock; | |
1115 | int scrub_workers_refcnt; | |
1116 | struct btrfs_workers scrub_workers; | |
1117 | ||
acce952b | 1118 | /* filesystem state */ |
1119 | u64 fs_state; | |
16cdcec7 MX |
1120 | |
1121 | struct btrfs_delayed_root *delayed_root; | |
324ae4df | 1122 | }; |
0b86a832 | 1123 | |
9f5fae2f CM |
1124 | /* |
1125 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 1126 | * and for the extent tree extent_root root. |
9f5fae2f CM |
1127 | */ |
1128 | struct btrfs_root { | |
5f39d397 | 1129 | struct extent_buffer *node; |
925baedd | 1130 | |
5f39d397 | 1131 | struct extent_buffer *commit_root; |
e02119d5 | 1132 | struct btrfs_root *log_root; |
1a40e23b | 1133 | struct btrfs_root *reloc_root; |
31153d81 | 1134 | |
62e2749e CM |
1135 | struct btrfs_root_item root_item; |
1136 | struct btrfs_key root_key; | |
9f5fae2f | 1137 | struct btrfs_fs_info *fs_info; |
d0c803c4 CM |
1138 | struct extent_io_tree dirty_log_pages; |
1139 | ||
58176a96 JB |
1140 | struct kobject root_kobj; |
1141 | struct completion kobj_unregister; | |
a2135011 | 1142 | struct mutex objectid_mutex; |
7237f183 | 1143 | |
f0486c68 YZ |
1144 | spinlock_t accounting_lock; |
1145 | struct btrfs_block_rsv *block_rsv; | |
1146 | ||
581bb050 LZ |
1147 | /* free ino cache stuff */ |
1148 | struct mutex fs_commit_mutex; | |
1149 | struct btrfs_free_space_ctl *free_ino_ctl; | |
1150 | enum btrfs_caching_type cached; | |
1151 | spinlock_t cache_lock; | |
1152 | wait_queue_head_t cache_wait; | |
1153 | struct btrfs_free_space_ctl *free_ino_pinned; | |
1154 | u64 cache_progress; | |
82d5902d | 1155 | struct inode *cache_inode; |
581bb050 | 1156 | |
e02119d5 | 1157 | struct mutex log_mutex; |
7237f183 YZ |
1158 | wait_queue_head_t log_writer_wait; |
1159 | wait_queue_head_t log_commit_wait[2]; | |
1160 | atomic_t log_writers; | |
1161 | atomic_t log_commit[2]; | |
1162 | unsigned long log_transid; | |
257c62e1 | 1163 | unsigned long last_log_commit; |
7237f183 | 1164 | unsigned long log_batch; |
ff782e0a JB |
1165 | pid_t log_start_pid; |
1166 | bool log_multiple_pids; | |
ea8c2819 | 1167 | |
0f7d52f4 CM |
1168 | u64 objectid; |
1169 | u64 last_trans; | |
5f39d397 CM |
1170 | |
1171 | /* data allocations are done in sectorsize units */ | |
1172 | u32 sectorsize; | |
1173 | ||
1174 | /* node allocations are done in nodesize units */ | |
1175 | u32 nodesize; | |
1176 | ||
1177 | /* leaf allocations are done in leafsize units */ | |
1178 | u32 leafsize; | |
1179 | ||
87ee04eb CM |
1180 | u32 stripesize; |
1181 | ||
9f5fae2f | 1182 | u32 type; |
13a8a7c8 YZ |
1183 | |
1184 | u64 highest_objectid; | |
7585717f CM |
1185 | |
1186 | /* btrfs_record_root_in_trans is a multi-step process, | |
1187 | * and it can race with the balancing code. But the | |
1188 | * race is very small, and only the first time the root | |
1189 | * is added to each transaction. So in_trans_setup | |
1190 | * is used to tell us when more checks are required | |
1191 | */ | |
1192 | unsigned long in_trans_setup; | |
9f3a7427 | 1193 | int ref_cows; |
0b86a832 | 1194 | int track_dirty; |
4df27c4d YZ |
1195 | int in_radix; |
1196 | ||
3f157a2f | 1197 | u64 defrag_trans_start; |
6702ed49 | 1198 | struct btrfs_key defrag_progress; |
0ef3e66b | 1199 | struct btrfs_key defrag_max; |
6702ed49 | 1200 | int defrag_running; |
58176a96 | 1201 | char *name; |
0b86a832 CM |
1202 | |
1203 | /* the dirty list is only used by non-reference counted roots */ | |
1204 | struct list_head dirty_list; | |
7b128766 | 1205 | |
5d4f98a2 YZ |
1206 | struct list_head root_list; |
1207 | ||
d68fc57b | 1208 | spinlock_t orphan_lock; |
7b128766 | 1209 | struct list_head orphan_list; |
d68fc57b YZ |
1210 | struct btrfs_block_rsv *orphan_block_rsv; |
1211 | int orphan_item_inserted; | |
1212 | int orphan_cleanup_state; | |
3394e160 | 1213 | |
5d4f98a2 YZ |
1214 | spinlock_t inode_lock; |
1215 | /* red-black tree that keeps track of in-memory inodes */ | |
1216 | struct rb_root inode_tree; | |
1217 | ||
16cdcec7 MX |
1218 | /* |
1219 | * radix tree that keeps track of delayed nodes of every inode, | |
1220 | * protected by inode_lock | |
1221 | */ | |
1222 | struct radix_tree_root delayed_nodes_tree; | |
3394e160 CM |
1223 | /* |
1224 | * right now this just gets used so that a root has its own devid | |
1225 | * for stat. It may be used for more later | |
1226 | */ | |
0ee5dc67 | 1227 | dev_t anon_dev; |
62e2749e CM |
1228 | }; |
1229 | ||
4cb5300b CM |
1230 | struct btrfs_ioctl_defrag_range_args { |
1231 | /* start of the defrag operation */ | |
1232 | __u64 start; | |
1233 | ||
1234 | /* number of bytes to defrag, use (u64)-1 to say all */ | |
1235 | __u64 len; | |
1236 | ||
1237 | /* | |
1238 | * flags for the operation, which can include turning | |
1239 | * on compression for this one defrag | |
1240 | */ | |
1241 | __u64 flags; | |
1242 | ||
1243 | /* | |
1244 | * any extent bigger than this will be considered | |
1245 | * already defragged. Use 0 to take the kernel default | |
1246 | * Use 1 to say every single extent must be rewritten | |
1247 | */ | |
1248 | __u32 extent_thresh; | |
1249 | ||
1250 | /* | |
1251 | * which compression method to use if turning on compression | |
1252 | * for this defrag operation. If unspecified, zlib will | |
1253 | * be used | |
1254 | */ | |
1255 | __u32 compress_type; | |
1256 | ||
1257 | /* spare for later */ | |
1258 | __u32 unused[4]; | |
1259 | }; | |
1260 | ||
1261 | ||
1e1d2701 CM |
1262 | /* |
1263 | * inode items have the data typically returned from stat and store other | |
1264 | * info about object characteristics. There is one for every file and dir in | |
1265 | * the FS | |
1266 | */ | |
9078a3e1 | 1267 | #define BTRFS_INODE_ITEM_KEY 1 |
0660b5af CM |
1268 | #define BTRFS_INODE_REF_KEY 12 |
1269 | #define BTRFS_XATTR_ITEM_KEY 24 | |
1270 | #define BTRFS_ORPHAN_ITEM_KEY 48 | |
9078a3e1 | 1271 | /* reserve 2-15 close to the inode for later flexibility */ |
1e1d2701 CM |
1272 | |
1273 | /* | |
1274 | * dir items are the name -> inode pointers in a directory. There is one | |
1275 | * for every name in a directory. | |
1276 | */ | |
0660b5af CM |
1277 | #define BTRFS_DIR_LOG_ITEM_KEY 60 |
1278 | #define BTRFS_DIR_LOG_INDEX_KEY 72 | |
1279 | #define BTRFS_DIR_ITEM_KEY 84 | |
1280 | #define BTRFS_DIR_INDEX_KEY 96 | |
1e1d2701 | 1281 | /* |
9078a3e1 | 1282 | * extent data is for file data |
1e1d2701 | 1283 | */ |
0660b5af | 1284 | #define BTRFS_EXTENT_DATA_KEY 108 |
d20f7043 | 1285 | |
f254e52c | 1286 | /* |
d20f7043 CM |
1287 | * extent csums are stored in a separate tree and hold csums for |
1288 | * an entire extent on disk. | |
f254e52c | 1289 | */ |
d20f7043 | 1290 | #define BTRFS_EXTENT_CSUM_KEY 128 |
f254e52c | 1291 | |
1e1d2701 | 1292 | /* |
d4a78947 | 1293 | * root items point to tree roots. They are typically in the root |
1e1d2701 CM |
1294 | * tree used by the super block to find all the other trees |
1295 | */ | |
0660b5af CM |
1296 | #define BTRFS_ROOT_ITEM_KEY 132 |
1297 | ||
1298 | /* | |
1299 | * root backrefs tie subvols and snapshots to the directory entries that | |
1300 | * reference them | |
1301 | */ | |
1302 | #define BTRFS_ROOT_BACKREF_KEY 144 | |
1303 | ||
1304 | /* | |
1305 | * root refs make a fast index for listing all of the snapshots and | |
1306 | * subvolumes referenced by a given root. They point directly to the | |
1307 | * directory item in the root that references the subvol | |
1308 | */ | |
1309 | #define BTRFS_ROOT_REF_KEY 156 | |
1310 | ||
1e1d2701 CM |
1311 | /* |
1312 | * extent items are in the extent map tree. These record which blocks | |
1313 | * are used, and how many references there are to each block | |
1314 | */ | |
0660b5af | 1315 | #define BTRFS_EXTENT_ITEM_KEY 168 |
5d4f98a2 YZ |
1316 | |
1317 | #define BTRFS_TREE_BLOCK_REF_KEY 176 | |
1318 | ||
1319 | #define BTRFS_EXTENT_DATA_REF_KEY 178 | |
1320 | ||
1321 | #define BTRFS_EXTENT_REF_V0_KEY 180 | |
1322 | ||
1323 | #define BTRFS_SHARED_BLOCK_REF_KEY 182 | |
1324 | ||
1325 | #define BTRFS_SHARED_DATA_REF_KEY 184 | |
9078a3e1 CM |
1326 | |
1327 | /* | |
1328 | * block groups give us hints into the extent allocation trees. Which | |
1329 | * blocks are free etc etc | |
1330 | */ | |
0660b5af | 1331 | #define BTRFS_BLOCK_GROUP_ITEM_KEY 192 |
9f5fae2f | 1332 | |
0660b5af CM |
1333 | #define BTRFS_DEV_EXTENT_KEY 204 |
1334 | #define BTRFS_DEV_ITEM_KEY 216 | |
1335 | #define BTRFS_CHUNK_ITEM_KEY 228 | |
0b86a832 | 1336 | |
1e1d2701 CM |
1337 | /* |
1338 | * string items are for debugging. They just store a short string of | |
1339 | * data in the FS | |
1340 | */ | |
9078a3e1 CM |
1341 | #define BTRFS_STRING_ITEM_KEY 253 |
1342 | ||
0942caa3 DS |
1343 | /* |
1344 | * Flags for mount options. | |
1345 | * | |
1346 | * Note: don't forget to add new options to btrfs_show_options() | |
1347 | */ | |
21ad10cf CM |
1348 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
1349 | #define BTRFS_MOUNT_NODATACOW (1 << 1) | |
1350 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) | |
e18e4809 | 1351 | #define BTRFS_MOUNT_SSD (1 << 3) |
dfe25020 | 1352 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
c8b97818 | 1353 | #define BTRFS_MOUNT_COMPRESS (1 << 5) |
3a5e1404 | 1354 | #define BTRFS_MOUNT_NOTREELOG (1 << 6) |
dccae999 | 1355 | #define BTRFS_MOUNT_FLUSHONCOMMIT (1 << 7) |
451d7585 | 1356 | #define BTRFS_MOUNT_SSD_SPREAD (1 << 8) |
c289811c | 1357 | #define BTRFS_MOUNT_NOSSD (1 << 9) |
e244a0ae | 1358 | #define BTRFS_MOUNT_DISCARD (1 << 10) |
a555f810 | 1359 | #define BTRFS_MOUNT_FORCE_COMPRESS (1 << 11) |
0af3d00b | 1360 | #define BTRFS_MOUNT_SPACE_CACHE (1 << 12) |
88c2ba3b | 1361 | #define BTRFS_MOUNT_CLEAR_CACHE (1 << 13) |
4260f7c7 | 1362 | #define BTRFS_MOUNT_USER_SUBVOL_RM_ALLOWED (1 << 14) |
91435650 | 1363 | #define BTRFS_MOUNT_ENOSPC_DEBUG (1 << 15) |
4cb5300b | 1364 | #define BTRFS_MOUNT_AUTO_DEFRAG (1 << 16) |
4b9465cb | 1365 | #define BTRFS_MOUNT_INODE_MAP_CACHE (1 << 17) |
b6cda9bc CM |
1366 | |
1367 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) | |
1368 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) | |
1369 | #define btrfs_test_opt(root, opt) ((root)->fs_info->mount_opt & \ | |
1370 | BTRFS_MOUNT_##opt) | |
b98b6767 Y |
1371 | /* |
1372 | * Inode flags | |
1373 | */ | |
fdebe2bd Y |
1374 | #define BTRFS_INODE_NODATASUM (1 << 0) |
1375 | #define BTRFS_INODE_NODATACOW (1 << 1) | |
1376 | #define BTRFS_INODE_READONLY (1 << 2) | |
c8b97818 | 1377 | #define BTRFS_INODE_NOCOMPRESS (1 << 3) |
d899e052 | 1378 | #define BTRFS_INODE_PREALLOC (1 << 4) |
6cbff00f CH |
1379 | #define BTRFS_INODE_SYNC (1 << 5) |
1380 | #define BTRFS_INODE_IMMUTABLE (1 << 6) | |
1381 | #define BTRFS_INODE_APPEND (1 << 7) | |
1382 | #define BTRFS_INODE_NODUMP (1 << 8) | |
1383 | #define BTRFS_INODE_NOATIME (1 << 9) | |
1384 | #define BTRFS_INODE_DIRSYNC (1 << 10) | |
75e7cb7f | 1385 | #define BTRFS_INODE_COMPRESS (1 << 11) |
6cbff00f | 1386 | |
08fe4db1 LZ |
1387 | #define BTRFS_INODE_ROOT_ITEM_INIT (1 << 31) |
1388 | ||
5f39d397 CM |
1389 | /* some macros to generate set/get funcs for the struct fields. This |
1390 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple | |
1391 | * one for u8: | |
1392 | */ | |
1393 | #define le8_to_cpu(v) (v) | |
1394 | #define cpu_to_le8(v) (v) | |
1395 | #define __le8 u8 | |
1396 | ||
1397 | #define read_eb_member(eb, ptr, type, member, result) ( \ | |
1398 | read_extent_buffer(eb, (char *)(result), \ | |
1399 | ((unsigned long)(ptr)) + \ | |
1400 | offsetof(type, member), \ | |
1401 | sizeof(((type *)0)->member))) | |
1402 | ||
1403 | #define write_eb_member(eb, ptr, type, member, result) ( \ | |
1404 | write_extent_buffer(eb, (char *)(result), \ | |
1405 | ((unsigned long)(ptr)) + \ | |
1406 | offsetof(type, member), \ | |
1407 | sizeof(((type *)0)->member))) | |
1408 | ||
0f82731f | 1409 | #ifndef BTRFS_SETGET_FUNCS |
5f39d397 | 1410 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
0f82731f CM |
1411 | u##bits btrfs_##name(struct extent_buffer *eb, type *s); \ |
1412 | void btrfs_set_##name(struct extent_buffer *eb, type *s, u##bits val); | |
1413 | #endif | |
5f39d397 CM |
1414 | |
1415 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | |
1416 | static inline u##bits btrfs_##name(struct extent_buffer *eb) \ | |
1417 | { \ | |
df68b8a7 DM |
1418 | type *p = kmap_atomic(eb->first_page, KM_USER0); \ |
1419 | u##bits res = le##bits##_to_cpu(p->member); \ | |
1420 | kunmap_atomic(p, KM_USER0); \ | |
810191ff | 1421 | return res; \ |
5f39d397 CM |
1422 | } \ |
1423 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ | |
1424 | u##bits val) \ | |
1425 | { \ | |
df68b8a7 DM |
1426 | type *p = kmap_atomic(eb->first_page, KM_USER0); \ |
1427 | p->member = cpu_to_le##bits(val); \ | |
1428 | kunmap_atomic(p, KM_USER0); \ | |
5f39d397 | 1429 | } |
9078a3e1 | 1430 | |
5f39d397 CM |
1431 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
1432 | static inline u##bits btrfs_##name(type *s) \ | |
1433 | { \ | |
1434 | return le##bits##_to_cpu(s->member); \ | |
1435 | } \ | |
1436 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
1437 | { \ | |
1438 | s->member = cpu_to_le##bits(val); \ | |
1e1d2701 CM |
1439 | } |
1440 | ||
0b86a832 CM |
1441 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
1442 | BTRFS_SETGET_FUNCS(device_total_bytes, struct btrfs_dev_item, total_bytes, 64); | |
1443 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); | |
1444 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); | |
1445 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); | |
c3027eb5 CM |
1446 | BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, |
1447 | start_offset, 64); | |
0b86a832 CM |
1448 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); |
1449 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1450 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
1451 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); | |
1452 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); | |
2b82032c | 1453 | BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64); |
0b86a832 | 1454 | |
8a4b83cc CM |
1455 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
1456 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, | |
1457 | total_bytes, 64); | |
1458 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, | |
1459 | bytes_used, 64); | |
1460 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, | |
1461 | io_align, 32); | |
1462 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, | |
1463 | io_width, 32); | |
1464 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, | |
1465 | sector_size, 32); | |
1466 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1467 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
1468 | dev_group, 32); | |
1469 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, | |
1470 | seek_speed, 8); | |
1471 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, | |
1472 | bandwidth, 8); | |
2b82032c YZ |
1473 | BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item, |
1474 | generation, 64); | |
8a4b83cc | 1475 | |
0b86a832 CM |
1476 | static inline char *btrfs_device_uuid(struct btrfs_dev_item *d) |
1477 | { | |
1478 | return (char *)d + offsetof(struct btrfs_dev_item, uuid); | |
1479 | } | |
1480 | ||
2b82032c YZ |
1481 | static inline char *btrfs_device_fsid(struct btrfs_dev_item *d) |
1482 | { | |
1483 | return (char *)d + offsetof(struct btrfs_dev_item, fsid); | |
1484 | } | |
1485 | ||
e17cade2 | 1486 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
0b86a832 CM |
1487 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
1488 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); | |
1489 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); | |
1490 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); | |
1491 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); | |
1492 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); | |
1493 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); | |
321aecc6 | 1494 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
0b86a832 CM |
1495 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
1496 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); | |
1497 | ||
e17cade2 CM |
1498 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
1499 | { | |
1500 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); | |
1501 | } | |
1502 | ||
1503 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); | |
0b86a832 CM |
1504 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
1505 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, | |
1506 | stripe_len, 64); | |
1507 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, | |
1508 | io_align, 32); | |
1509 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, | |
1510 | io_width, 32); | |
1511 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, | |
1512 | sector_size, 32); | |
1513 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); | |
1514 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, | |
1515 | num_stripes, 16); | |
321aecc6 CM |
1516 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
1517 | sub_stripes, 16); | |
0b86a832 CM |
1518 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
1519 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); | |
1520 | ||
1521 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, | |
1522 | int nr) | |
1523 | { | |
1524 | unsigned long offset = (unsigned long)c; | |
1525 | offset += offsetof(struct btrfs_chunk, stripe); | |
1526 | offset += nr * sizeof(struct btrfs_stripe); | |
1527 | return (struct btrfs_stripe *)offset; | |
1528 | } | |
1529 | ||
a443755f CM |
1530 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
1531 | { | |
1532 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); | |
1533 | } | |
1534 | ||
0b86a832 CM |
1535 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
1536 | struct btrfs_chunk *c, int nr) | |
1537 | { | |
1538 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); | |
1539 | } | |
1540 | ||
0b86a832 CM |
1541 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, |
1542 | struct btrfs_chunk *c, int nr) | |
1543 | { | |
1544 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); | |
1545 | } | |
1546 | ||
5f39d397 CM |
1547 | /* struct btrfs_block_group_item */ |
1548 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, | |
1549 | used, 64); | |
1550 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, | |
1551 | used, 64); | |
0b86a832 CM |
1552 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, |
1553 | struct btrfs_block_group_item, chunk_objectid, 64); | |
e17cade2 CM |
1554 | |
1555 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, | |
0b86a832 CM |
1556 | struct btrfs_block_group_item, chunk_objectid, 64); |
1557 | BTRFS_SETGET_FUNCS(disk_block_group_flags, | |
1558 | struct btrfs_block_group_item, flags, 64); | |
1559 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, | |
1560 | struct btrfs_block_group_item, flags, 64); | |
1e1d2701 | 1561 | |
3954401f CM |
1562 | /* struct btrfs_inode_ref */ |
1563 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
aec7477b | 1564 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
3954401f | 1565 | |
5f39d397 CM |
1566 | /* struct btrfs_inode_item */ |
1567 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
c3027eb5 | 1568 | BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64); |
e02119d5 | 1569 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
5f39d397 | 1570 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
a76a3cd4 | 1571 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); |
5f39d397 CM |
1572 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); |
1573 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1574 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
1575 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
1576 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
0b86a832 | 1577 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
f2b636e8 | 1578 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64); |
1e1d2701 | 1579 | |
0b86a832 | 1580 | static inline struct btrfs_timespec * |
5f39d397 | 1581 | btrfs_inode_atime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1582 | { |
5f39d397 CM |
1583 | unsigned long ptr = (unsigned long)inode_item; |
1584 | ptr += offsetof(struct btrfs_inode_item, atime); | |
0b86a832 | 1585 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1586 | } |
1587 | ||
0b86a832 | 1588 | static inline struct btrfs_timespec * |
5f39d397 | 1589 | btrfs_inode_mtime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1590 | { |
5f39d397 CM |
1591 | unsigned long ptr = (unsigned long)inode_item; |
1592 | ptr += offsetof(struct btrfs_inode_item, mtime); | |
0b86a832 | 1593 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1594 | } |
1595 | ||
0b86a832 | 1596 | static inline struct btrfs_timespec * |
5f39d397 | 1597 | btrfs_inode_ctime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1598 | { |
5f39d397 CM |
1599 | unsigned long ptr = (unsigned long)inode_item; |
1600 | ptr += offsetof(struct btrfs_inode_item, ctime); | |
0b86a832 | 1601 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1602 | } |
1603 | ||
0b86a832 CM |
1604 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
1605 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); | |
e20d96d6 | 1606 | |
0b86a832 | 1607 | /* struct btrfs_dev_extent */ |
e17cade2 CM |
1608 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
1609 | chunk_tree, 64); | |
1610 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
1611 | chunk_objectid, 64); | |
1612 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, | |
1613 | chunk_offset, 64); | |
0b86a832 CM |
1614 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
1615 | ||
e17cade2 CM |
1616 | static inline u8 *btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) |
1617 | { | |
1618 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); | |
1619 | return (u8 *)((unsigned long)dev + ptr); | |
1620 | } | |
1621 | ||
5d4f98a2 YZ |
1622 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64); |
1623 | BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item, | |
1624 | generation, 64); | |
1625 | BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64); | |
74493f7a | 1626 | |
5d4f98a2 YZ |
1627 | BTRFS_SETGET_FUNCS(extent_refs_v0, struct btrfs_extent_item_v0, refs, 32); |
1628 | ||
1629 | ||
1630 | BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8); | |
1631 | ||
1632 | static inline void btrfs_tree_block_key(struct extent_buffer *eb, | |
1633 | struct btrfs_tree_block_info *item, | |
1634 | struct btrfs_disk_key *key) | |
1635 | { | |
1636 | read_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
1637 | } | |
1638 | ||
1639 | static inline void btrfs_set_tree_block_key(struct extent_buffer *eb, | |
1640 | struct btrfs_tree_block_info *item, | |
1641 | struct btrfs_disk_key *key) | |
1642 | { | |
1643 | write_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
1644 | } | |
e20d96d6 | 1645 | |
5d4f98a2 YZ |
1646 | BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref, |
1647 | root, 64); | |
1648 | BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref, | |
1649 | objectid, 64); | |
1650 | BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref, | |
1651 | offset, 64); | |
1652 | BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref, | |
1653 | count, 32); | |
1654 | ||
1655 | BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref, | |
1656 | count, 32); | |
1657 | ||
1658 | BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref, | |
1659 | type, 8); | |
1660 | BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref, | |
1661 | offset, 64); | |
1662 | ||
1663 | static inline u32 btrfs_extent_inline_ref_size(int type) | |
1664 | { | |
1665 | if (type == BTRFS_TREE_BLOCK_REF_KEY || | |
1666 | type == BTRFS_SHARED_BLOCK_REF_KEY) | |
1667 | return sizeof(struct btrfs_extent_inline_ref); | |
1668 | if (type == BTRFS_SHARED_DATA_REF_KEY) | |
1669 | return sizeof(struct btrfs_shared_data_ref) + | |
1670 | sizeof(struct btrfs_extent_inline_ref); | |
1671 | if (type == BTRFS_EXTENT_DATA_REF_KEY) | |
1672 | return sizeof(struct btrfs_extent_data_ref) + | |
1673 | offsetof(struct btrfs_extent_inline_ref, offset); | |
1674 | BUG(); | |
1675 | return 0; | |
1676 | } | |
1677 | ||
1678 | BTRFS_SETGET_FUNCS(ref_root_v0, struct btrfs_extent_ref_v0, root, 64); | |
1679 | BTRFS_SETGET_FUNCS(ref_generation_v0, struct btrfs_extent_ref_v0, | |
1680 | generation, 64); | |
1681 | BTRFS_SETGET_FUNCS(ref_objectid_v0, struct btrfs_extent_ref_v0, objectid, 64); | |
1682 | BTRFS_SETGET_FUNCS(ref_count_v0, struct btrfs_extent_ref_v0, count, 32); | |
e20d96d6 | 1683 | |
5f39d397 CM |
1684 | /* struct btrfs_node */ |
1685 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
74493f7a | 1686 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
e20d96d6 | 1687 | |
5f39d397 | 1688 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
cf27e1ee | 1689 | { |
5f39d397 CM |
1690 | unsigned long ptr; |
1691 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1692 | sizeof(struct btrfs_key_ptr) * nr; | |
1693 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
cf27e1ee CM |
1694 | } |
1695 | ||
5f39d397 CM |
1696 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
1697 | int nr, u64 val) | |
cf27e1ee | 1698 | { |
5f39d397 CM |
1699 | unsigned long ptr; |
1700 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1701 | sizeof(struct btrfs_key_ptr) * nr; | |
1702 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
cf27e1ee CM |
1703 | } |
1704 | ||
74493f7a CM |
1705 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
1706 | { | |
1707 | unsigned long ptr; | |
1708 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1709 | sizeof(struct btrfs_key_ptr) * nr; | |
1710 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
1711 | } | |
1712 | ||
1713 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, | |
1714 | int nr, u64 val) | |
1715 | { | |
1716 | unsigned long ptr; | |
1717 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1718 | sizeof(struct btrfs_key_ptr) * nr; | |
1719 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
1720 | } | |
1721 | ||
810191ff | 1722 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
4d775673 | 1723 | { |
5f39d397 CM |
1724 | return offsetof(struct btrfs_node, ptrs) + |
1725 | sizeof(struct btrfs_key_ptr) * nr; | |
4d775673 CM |
1726 | } |
1727 | ||
e644d021 CM |
1728 | void btrfs_node_key(struct extent_buffer *eb, |
1729 | struct btrfs_disk_key *disk_key, int nr); | |
1730 | ||
5f39d397 CM |
1731 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
1732 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f8a0c | 1733 | { |
5f39d397 CM |
1734 | unsigned long ptr; |
1735 | ptr = btrfs_node_key_ptr_offset(nr); | |
1736 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
1737 | struct btrfs_key_ptr, key, disk_key); | |
1d4f8a0c CM |
1738 | } |
1739 | ||
5f39d397 CM |
1740 | /* struct btrfs_item */ |
1741 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); | |
1742 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); | |
4d775673 | 1743 | |
5f39d397 | 1744 | static inline unsigned long btrfs_item_nr_offset(int nr) |
1d4f8a0c | 1745 | { |
5f39d397 CM |
1746 | return offsetof(struct btrfs_leaf, items) + |
1747 | sizeof(struct btrfs_item) * nr; | |
1d4f8a0c CM |
1748 | } |
1749 | ||
5f39d397 CM |
1750 | static inline struct btrfs_item *btrfs_item_nr(struct extent_buffer *eb, |
1751 | int nr) | |
0783fcfc | 1752 | { |
5f39d397 | 1753 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
0783fcfc CM |
1754 | } |
1755 | ||
5f39d397 CM |
1756 | static inline u32 btrfs_item_end(struct extent_buffer *eb, |
1757 | struct btrfs_item *item) | |
0783fcfc | 1758 | { |
5f39d397 | 1759 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
0783fcfc CM |
1760 | } |
1761 | ||
5f39d397 | 1762 | static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1763 | { |
5f39d397 | 1764 | return btrfs_item_end(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1765 | } |
1766 | ||
5f39d397 | 1767 | static inline u32 btrfs_item_offset_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1768 | { |
5f39d397 | 1769 | return btrfs_item_offset(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1770 | } |
1771 | ||
5f39d397 | 1772 | static inline u32 btrfs_item_size_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1773 | { |
5f39d397 | 1774 | return btrfs_item_size(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1775 | } |
1776 | ||
5f39d397 CM |
1777 | static inline void btrfs_item_key(struct extent_buffer *eb, |
1778 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1779 | { |
5f39d397 CM |
1780 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
1781 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
1782 | } |
1783 | ||
5f39d397 CM |
1784 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
1785 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1786 | { |
5f39d397 CM |
1787 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
1788 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
1789 | } |
1790 | ||
e02119d5 CM |
1791 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
1792 | ||
0660b5af CM |
1793 | /* |
1794 | * struct btrfs_root_ref | |
1795 | */ | |
1796 | BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64); | |
1797 | BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64); | |
1798 | BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16); | |
1799 | ||
5f39d397 | 1800 | /* struct btrfs_dir_item */ |
5103e947 | 1801 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
5f39d397 CM |
1802 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
1803 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); | |
e02119d5 | 1804 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
1d4f6404 | 1805 | |
5f39d397 CM |
1806 | static inline void btrfs_dir_item_key(struct extent_buffer *eb, |
1807 | struct btrfs_dir_item *item, | |
1808 | struct btrfs_disk_key *key) | |
1d4f6404 | 1809 | { |
5f39d397 | 1810 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
1d4f6404 CM |
1811 | } |
1812 | ||
5f39d397 CM |
1813 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
1814 | struct btrfs_dir_item *item, | |
1815 | struct btrfs_disk_key *key) | |
a8a2ee0c | 1816 | { |
5f39d397 | 1817 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
a8a2ee0c CM |
1818 | } |
1819 | ||
0af3d00b JB |
1820 | BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header, |
1821 | num_entries, 64); | |
1822 | BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header, | |
1823 | num_bitmaps, 64); | |
1824 | BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header, | |
1825 | generation, 64); | |
1826 | ||
1827 | static inline void btrfs_free_space_key(struct extent_buffer *eb, | |
1828 | struct btrfs_free_space_header *h, | |
1829 | struct btrfs_disk_key *key) | |
1830 | { | |
1831 | read_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
1832 | } | |
1833 | ||
1834 | static inline void btrfs_set_free_space_key(struct extent_buffer *eb, | |
1835 | struct btrfs_free_space_header *h, | |
1836 | struct btrfs_disk_key *key) | |
1837 | { | |
1838 | write_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
1839 | } | |
1840 | ||
5f39d397 CM |
1841 | /* struct btrfs_disk_key */ |
1842 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, | |
1843 | objectid, 64); | |
1844 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
1845 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
1d4f6404 | 1846 | |
e2fa7227 CM |
1847 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
1848 | struct btrfs_disk_key *disk) | |
1849 | { | |
1850 | cpu->offset = le64_to_cpu(disk->offset); | |
5f39d397 | 1851 | cpu->type = disk->type; |
e2fa7227 CM |
1852 | cpu->objectid = le64_to_cpu(disk->objectid); |
1853 | } | |
1854 | ||
1855 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
1856 | struct btrfs_key *cpu) | |
1857 | { | |
1858 | disk->offset = cpu_to_le64(cpu->offset); | |
5f39d397 | 1859 | disk->type = cpu->type; |
e2fa7227 CM |
1860 | disk->objectid = cpu_to_le64(cpu->objectid); |
1861 | } | |
1862 | ||
5f39d397 CM |
1863 | static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb, |
1864 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1865 | { |
5f39d397 CM |
1866 | struct btrfs_disk_key disk_key; |
1867 | btrfs_node_key(eb, &disk_key, nr); | |
1868 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1869 | } |
1870 | ||
5f39d397 CM |
1871 | static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb, |
1872 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1873 | { |
5f39d397 CM |
1874 | struct btrfs_disk_key disk_key; |
1875 | btrfs_item_key(eb, &disk_key, nr); | |
1876 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1877 | } |
1878 | ||
5f39d397 CM |
1879 | static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb, |
1880 | struct btrfs_dir_item *item, | |
1881 | struct btrfs_key *key) | |
4d775673 | 1882 | { |
5f39d397 CM |
1883 | struct btrfs_disk_key disk_key; |
1884 | btrfs_dir_item_key(eb, item, &disk_key); | |
1885 | btrfs_disk_key_to_cpu(key, &disk_key); | |
4d775673 CM |
1886 | } |
1887 | ||
58176a96 | 1888 | |
5f39d397 | 1889 | static inline u8 btrfs_key_type(struct btrfs_key *key) |
3768f368 | 1890 | { |
5f39d397 | 1891 | return key->type; |
3768f368 CM |
1892 | } |
1893 | ||
5f39d397 | 1894 | static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val) |
3768f368 | 1895 | { |
5f39d397 | 1896 | key->type = val; |
3768f368 CM |
1897 | } |
1898 | ||
5f39d397 | 1899 | /* struct btrfs_header */ |
db94535d | 1900 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
5f39d397 CM |
1901 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
1902 | generation, 64); | |
1903 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
1904 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
63b10fc4 | 1905 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
5f39d397 | 1906 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
0f7d52f4 | 1907 | |
63b10fc4 CM |
1908 | static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag) |
1909 | { | |
1910 | return (btrfs_header_flags(eb) & flag) == flag; | |
1911 | } | |
1912 | ||
1913 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) | |
1914 | { | |
1915 | u64 flags = btrfs_header_flags(eb); | |
1916 | btrfs_set_header_flags(eb, flags | flag); | |
1917 | return (flags & flag) == flag; | |
1918 | } | |
1919 | ||
1920 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) | |
1921 | { | |
1922 | u64 flags = btrfs_header_flags(eb); | |
1923 | btrfs_set_header_flags(eb, flags & ~flag); | |
1924 | return (flags & flag) == flag; | |
1925 | } | |
1926 | ||
5d4f98a2 YZ |
1927 | static inline int btrfs_header_backref_rev(struct extent_buffer *eb) |
1928 | { | |
1929 | u64 flags = btrfs_header_flags(eb); | |
1930 | return flags >> BTRFS_BACKREF_REV_SHIFT; | |
1931 | } | |
1932 | ||
1933 | static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb, | |
1934 | int rev) | |
1935 | { | |
1936 | u64 flags = btrfs_header_flags(eb); | |
1937 | flags &= ~BTRFS_BACKREF_REV_MASK; | |
1938 | flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT; | |
1939 | btrfs_set_header_flags(eb, flags); | |
1940 | } | |
1941 | ||
5f39d397 | 1942 | static inline u8 *btrfs_header_fsid(struct extent_buffer *eb) |
0f7d52f4 | 1943 | { |
5f39d397 CM |
1944 | unsigned long ptr = offsetof(struct btrfs_header, fsid); |
1945 | return (u8 *)ptr; | |
0f7d52f4 CM |
1946 | } |
1947 | ||
e17cade2 CM |
1948 | static inline u8 *btrfs_header_chunk_tree_uuid(struct extent_buffer *eb) |
1949 | { | |
1950 | unsigned long ptr = offsetof(struct btrfs_header, chunk_tree_uuid); | |
1951 | return (u8 *)ptr; | |
1952 | } | |
1953 | ||
5f39d397 | 1954 | static inline int btrfs_is_leaf(struct extent_buffer *eb) |
3768f368 | 1955 | { |
d397712b | 1956 | return btrfs_header_level(eb) == 0; |
3768f368 CM |
1957 | } |
1958 | ||
5f39d397 | 1959 | /* struct btrfs_root_item */ |
84234f3a YZ |
1960 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, |
1961 | generation, 64); | |
5f39d397 | 1962 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); |
db94535d CM |
1963 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
1964 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
3768f368 | 1965 | |
84234f3a YZ |
1966 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, |
1967 | generation, 64); | |
db94535d CM |
1968 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
1969 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); | |
5f39d397 CM |
1970 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
1971 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
f2b636e8 | 1972 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64); |
db94535d CM |
1973 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
1974 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
80ff3856 YZ |
1975 | BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item, |
1976 | last_snapshot, 64); | |
123abc88 | 1977 | |
b83cc969 LZ |
1978 | static inline bool btrfs_root_readonly(struct btrfs_root *root) |
1979 | { | |
1980 | return root->root_item.flags & BTRFS_ROOT_SUBVOL_RDONLY; | |
1981 | } | |
1982 | ||
5f39d397 | 1983 | /* struct btrfs_super_block */ |
607d432d | 1984 | |
db94535d | 1985 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
a061fc8d | 1986 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
5f39d397 CM |
1987 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
1988 | generation, 64); | |
1989 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
0b86a832 CM |
1990 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
1991 | struct btrfs_super_block, sys_chunk_array_size, 32); | |
84234f3a YZ |
1992 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, |
1993 | struct btrfs_super_block, chunk_root_generation, 64); | |
db94535d CM |
1994 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
1995 | root_level, 8); | |
0b86a832 CM |
1996 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
1997 | chunk_root, 64); | |
1998 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, | |
e02119d5 CM |
1999 | chunk_root_level, 8); |
2000 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, | |
2001 | log_root, 64); | |
c3027eb5 CM |
2002 | BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block, |
2003 | log_root_transid, 64); | |
e02119d5 CM |
2004 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, |
2005 | log_root_level, 8); | |
db94535d CM |
2006 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
2007 | total_bytes, 64); | |
2008 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
2009 | bytes_used, 64); | |
5f39d397 CM |
2010 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
2011 | sectorsize, 32); | |
2012 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
2013 | nodesize, 32); | |
2014 | BTRFS_SETGET_STACK_FUNCS(super_leafsize, struct btrfs_super_block, | |
2015 | leafsize, 32); | |
87ee04eb CM |
2016 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
2017 | stripesize, 32); | |
5f39d397 CM |
2018 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
2019 | root_dir_objectid, 64); | |
8a4b83cc CM |
2020 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
2021 | num_devices, 64); | |
f2b636e8 JB |
2022 | BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block, |
2023 | compat_flags, 64); | |
2024 | BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block, | |
12534832 | 2025 | compat_ro_flags, 64); |
f2b636e8 JB |
2026 | BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block, |
2027 | incompat_flags, 64); | |
607d432d JB |
2028 | BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block, |
2029 | csum_type, 16); | |
0af3d00b JB |
2030 | BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block, |
2031 | cache_generation, 64); | |
607d432d JB |
2032 | |
2033 | static inline int btrfs_super_csum_size(struct btrfs_super_block *s) | |
2034 | { | |
2035 | int t = btrfs_super_csum_type(s); | |
2036 | BUG_ON(t >= ARRAY_SIZE(btrfs_csum_sizes)); | |
2037 | return btrfs_csum_sizes[t]; | |
2038 | } | |
2e635a27 | 2039 | |
5f39d397 | 2040 | static inline unsigned long btrfs_leaf_data(struct extent_buffer *l) |
2e635a27 | 2041 | { |
5f39d397 | 2042 | return offsetof(struct btrfs_leaf, items); |
2e635a27 CM |
2043 | } |
2044 | ||
5f39d397 CM |
2045 | /* struct btrfs_file_extent_item */ |
2046 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); | |
9f5fae2f | 2047 | |
d397712b CM |
2048 | static inline unsigned long |
2049 | btrfs_file_extent_inline_start(struct btrfs_file_extent_item *e) | |
236454df | 2050 | { |
5f39d397 | 2051 | unsigned long offset = (unsigned long)e; |
db94535d | 2052 | offset += offsetof(struct btrfs_file_extent_item, disk_bytenr); |
5f39d397 | 2053 | return offset; |
236454df CM |
2054 | } |
2055 | ||
2056 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
2057 | { | |
db94535d | 2058 | return offsetof(struct btrfs_file_extent_item, disk_bytenr) + datasize; |
9f5fae2f CM |
2059 | } |
2060 | ||
db94535d CM |
2061 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
2062 | disk_bytenr, 64); | |
5f39d397 CM |
2063 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
2064 | generation, 64); | |
db94535d CM |
2065 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
2066 | disk_num_bytes, 64); | |
5f39d397 CM |
2067 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
2068 | offset, 64); | |
db94535d CM |
2069 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
2070 | num_bytes, 64); | |
c8b97818 CM |
2071 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, |
2072 | ram_bytes, 64); | |
2073 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, | |
2074 | compression, 8); | |
2075 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, | |
2076 | encryption, 8); | |
2077 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, | |
2078 | other_encoding, 16); | |
2079 | ||
2080 | /* this returns the number of file bytes represented by the inline item. | |
2081 | * If an item is compressed, this is the uncompressed size | |
2082 | */ | |
2083 | static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb, | |
2084 | struct btrfs_file_extent_item *e) | |
2085 | { | |
2086 | return btrfs_file_extent_ram_bytes(eb, e); | |
2087 | } | |
2088 | ||
2089 | /* | |
2090 | * this returns the number of bytes used by the item on disk, minus the | |
2091 | * size of any extent headers. If a file is compressed on disk, this is | |
2092 | * the compressed size | |
2093 | */ | |
2094 | static inline u32 btrfs_file_extent_inline_item_len(struct extent_buffer *eb, | |
2095 | struct btrfs_item *e) | |
2096 | { | |
2097 | unsigned long offset; | |
2098 | offset = offsetof(struct btrfs_file_extent_item, disk_bytenr); | |
2099 | return btrfs_item_size(eb, e) - offset; | |
2100 | } | |
9f5fae2f | 2101 | |
e20d96d6 CM |
2102 | static inline struct btrfs_root *btrfs_sb(struct super_block *sb) |
2103 | { | |
2104 | return sb->s_fs_info; | |
2105 | } | |
2106 | ||
d397712b CM |
2107 | static inline u32 btrfs_level_size(struct btrfs_root *root, int level) |
2108 | { | |
db94535d CM |
2109 | if (level == 0) |
2110 | return root->leafsize; | |
2111 | return root->nodesize; | |
2112 | } | |
2113 | ||
4beb1b8b CM |
2114 | /* helper function to cast into the data area of the leaf. */ |
2115 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 | 2116 | ((type *)(btrfs_leaf_data(leaf) + \ |
5f39d397 CM |
2117 | btrfs_item_offset_nr(leaf, slot))) |
2118 | ||
2119 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
2120 | ((unsigned long)(btrfs_leaf_data(leaf) + \ | |
2121 | btrfs_item_offset_nr(leaf, slot))) | |
4beb1b8b | 2122 | |
2b1f55b0 CM |
2123 | static inline struct dentry *fdentry(struct file *file) |
2124 | { | |
6da6abae | 2125 | return file->f_path.dentry; |
6da6abae CM |
2126 | } |
2127 | ||
67377734 JB |
2128 | static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info) |
2129 | { | |
2130 | return ((space_info->flags & BTRFS_BLOCK_GROUP_METADATA) && | |
2131 | (space_info->flags & BTRFS_BLOCK_GROUP_DATA)); | |
2132 | } | |
2133 | ||
b18c6685 | 2134 | /* extent-tree.c */ |
16cdcec7 | 2135 | static inline u64 btrfs_calc_trans_metadata_size(struct btrfs_root *root, |
9e0baf60 | 2136 | unsigned num_items) |
16cdcec7 MX |
2137 | { |
2138 | return (root->leafsize + root->nodesize * (BTRFS_MAX_LEVEL - 1)) * | |
2139 | 3 * num_items; | |
2140 | } | |
2141 | ||
fa9c0d79 | 2142 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
56bec294 CM |
2143 | int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, |
2144 | struct btrfs_root *root, unsigned long count); | |
31840ae1 | 2145 | int btrfs_lookup_extent(struct btrfs_root *root, u64 start, u64 len); |
a22285a6 YZ |
2146 | int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans, |
2147 | struct btrfs_root *root, u64 bytenr, | |
2148 | u64 num_bytes, u64 *refs, u64 *flags); | |
11833d66 YZ |
2149 | int btrfs_pin_extent(struct btrfs_root *root, |
2150 | u64 bytenr, u64 num, int reserved); | |
80ff3856 | 2151 | int btrfs_cross_ref_exist(struct btrfs_trans_handle *trans, |
5d4f98a2 YZ |
2152 | struct btrfs_root *root, |
2153 | u64 objectid, u64 offset, u64 bytenr); | |
d397712b CM |
2154 | struct btrfs_block_group_cache *btrfs_lookup_block_group( |
2155 | struct btrfs_fs_info *info, | |
2156 | u64 bytenr); | |
5d4f98a2 | 2157 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
d2fb3437 YZ |
2158 | u64 btrfs_find_block_group(struct btrfs_root *root, |
2159 | u64 search_start, u64 search_hint, int owner); | |
5f39d397 | 2160 | struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
5d4f98a2 YZ |
2161 | struct btrfs_root *root, u32 blocksize, |
2162 | u64 parent, u64 root_objectid, | |
2163 | struct btrfs_disk_key *key, int level, | |
2164 | u64 hint, u64 empty_size); | |
f0486c68 YZ |
2165 | void btrfs_free_tree_block(struct btrfs_trans_handle *trans, |
2166 | struct btrfs_root *root, | |
2167 | struct extent_buffer *buf, | |
2168 | u64 parent, int last_ref); | |
65b51a00 CM |
2169 | struct extent_buffer *btrfs_init_new_buffer(struct btrfs_trans_handle *trans, |
2170 | struct btrfs_root *root, | |
4008c04a CM |
2171 | u64 bytenr, u32 blocksize, |
2172 | int level); | |
5d4f98a2 YZ |
2173 | int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans, |
2174 | struct btrfs_root *root, | |
2175 | u64 root_objectid, u64 owner, | |
2176 | u64 offset, struct btrfs_key *ins); | |
2177 | int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans, | |
2178 | struct btrfs_root *root, | |
2179 | u64 root_objectid, u64 owner, u64 offset, | |
2180 | struct btrfs_key *ins); | |
e6dcd2dc CM |
2181 | int btrfs_reserve_extent(struct btrfs_trans_handle *trans, |
2182 | struct btrfs_root *root, | |
2183 | u64 num_bytes, u64 min_alloc_size, | |
2184 | u64 empty_size, u64 hint_byte, | |
2185 | u64 search_end, struct btrfs_key *ins, | |
2186 | u64 data); | |
e089f05c | 2187 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
5d4f98a2 YZ |
2188 | struct extent_buffer *buf, int full_backref); |
2189 | int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, | |
2190 | struct extent_buffer *buf, int full_backref); | |
2191 | int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans, | |
2192 | struct btrfs_root *root, | |
2193 | u64 bytenr, u64 num_bytes, u64 flags, | |
2194 | int is_data); | |
31840ae1 ZY |
2195 | int btrfs_free_extent(struct btrfs_trans_handle *trans, |
2196 | struct btrfs_root *root, | |
2197 | u64 bytenr, u64 num_bytes, u64 parent, | |
5d4f98a2 YZ |
2198 | u64 root_objectid, u64 owner, u64 offset); |
2199 | ||
65b51a00 | 2200 | int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len); |
b4d00d56 LD |
2201 | int btrfs_update_reserved_bytes(struct btrfs_block_group_cache *cache, |
2202 | u64 num_bytes, int reserve, int sinfo); | |
11833d66 YZ |
2203 | int btrfs_prepare_extent_commit(struct btrfs_trans_handle *trans, |
2204 | struct btrfs_root *root); | |
ccd467d6 | 2205 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, |
11833d66 | 2206 | struct btrfs_root *root); |
b18c6685 | 2207 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
31840ae1 ZY |
2208 | struct btrfs_root *root, |
2209 | u64 bytenr, u64 num_bytes, u64 parent, | |
5d4f98a2 YZ |
2210 | u64 root_objectid, u64 owner, u64 offset); |
2211 | ||
9078a3e1 CM |
2212 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
2213 | struct btrfs_root *root); | |
d2fb3437 | 2214 | int btrfs_extent_readonly(struct btrfs_root *root, u64 bytenr); |
9078a3e1 CM |
2215 | int btrfs_free_block_groups(struct btrfs_fs_info *info); |
2216 | int btrfs_read_block_groups(struct btrfs_root *root); | |
ba1bf481 | 2217 | int btrfs_can_relocate(struct btrfs_root *root, u64 bytenr); |
0b86a832 CM |
2218 | int btrfs_make_block_group(struct btrfs_trans_handle *trans, |
2219 | struct btrfs_root *root, u64 bytes_used, | |
e17cade2 | 2220 | u64 type, u64 chunk_objectid, u64 chunk_offset, |
0b86a832 | 2221 | u64 size); |
1a40e23b ZY |
2222 | int btrfs_remove_block_group(struct btrfs_trans_handle *trans, |
2223 | struct btrfs_root *root, u64 group_start); | |
2b82032c | 2224 | u64 btrfs_reduce_alloc_profile(struct btrfs_root *root, u64 flags); |
6d07bcec | 2225 | u64 btrfs_get_alloc_profile(struct btrfs_root *root, int data); |
6a63209f | 2226 | void btrfs_set_inode_space_info(struct btrfs_root *root, struct inode *ionde); |
4184ea7f | 2227 | void btrfs_clear_space_info_full(struct btrfs_fs_info *info); |
0ca1f7ce YZ |
2228 | int btrfs_check_data_free_space(struct inode *inode, u64 bytes); |
2229 | void btrfs_free_reserved_data_space(struct inode *inode, u64 bytes); | |
a22285a6 YZ |
2230 | void btrfs_trans_release_metadata(struct btrfs_trans_handle *trans, |
2231 | struct btrfs_root *root); | |
d68fc57b YZ |
2232 | int btrfs_orphan_reserve_metadata(struct btrfs_trans_handle *trans, |
2233 | struct inode *inode); | |
2234 | void btrfs_orphan_release_metadata(struct inode *inode); | |
a22285a6 YZ |
2235 | int btrfs_snap_reserve_metadata(struct btrfs_trans_handle *trans, |
2236 | struct btrfs_pending_snapshot *pending); | |
0ca1f7ce YZ |
2237 | int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes); |
2238 | void btrfs_delalloc_release_metadata(struct inode *inode, u64 num_bytes); | |
2239 | int btrfs_delalloc_reserve_space(struct inode *inode, u64 num_bytes); | |
2240 | void btrfs_delalloc_release_space(struct inode *inode, u64 num_bytes); | |
f0486c68 YZ |
2241 | void btrfs_init_block_rsv(struct btrfs_block_rsv *rsv); |
2242 | struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_root *root); | |
2243 | void btrfs_free_block_rsv(struct btrfs_root *root, | |
2244 | struct btrfs_block_rsv *rsv); | |
2245 | void btrfs_add_durable_block_rsv(struct btrfs_fs_info *fs_info, | |
2246 | struct btrfs_block_rsv *rsv); | |
2247 | int btrfs_block_rsv_add(struct btrfs_trans_handle *trans, | |
2248 | struct btrfs_root *root, | |
2249 | struct btrfs_block_rsv *block_rsv, | |
8bb8ab2e | 2250 | u64 num_bytes); |
f0486c68 YZ |
2251 | int btrfs_block_rsv_check(struct btrfs_trans_handle *trans, |
2252 | struct btrfs_root *root, | |
2253 | struct btrfs_block_rsv *block_rsv, | |
2254 | u64 min_reserved, int min_factor); | |
2255 | int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv, | |
2256 | struct btrfs_block_rsv *dst_rsv, | |
2257 | u64 num_bytes); | |
2258 | void btrfs_block_rsv_release(struct btrfs_root *root, | |
2259 | struct btrfs_block_rsv *block_rsv, | |
2260 | u64 num_bytes); | |
fcb80c2a JB |
2261 | int btrfs_truncate_reserve_metadata(struct btrfs_trans_handle *trans, |
2262 | struct btrfs_root *root, | |
2263 | struct btrfs_block_rsv *rsv); | |
f0486c68 YZ |
2264 | int btrfs_set_block_group_ro(struct btrfs_root *root, |
2265 | struct btrfs_block_group_cache *cache); | |
2266 | int btrfs_set_block_group_rw(struct btrfs_root *root, | |
2267 | struct btrfs_block_group_cache *cache); | |
0af3d00b | 2268 | void btrfs_put_block_group_cache(struct btrfs_fs_info *info); |
6d07bcec | 2269 | u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo); |
acce952b | 2270 | int btrfs_error_unpin_extent_range(struct btrfs_root *root, |
2271 | u64 start, u64 end); | |
2272 | int btrfs_error_discard_extent(struct btrfs_root *root, u64 bytenr, | |
5378e607 | 2273 | u64 num_bytes, u64 *actual_bytes); |
c87f08ca CM |
2274 | int btrfs_force_chunk_alloc(struct btrfs_trans_handle *trans, |
2275 | struct btrfs_root *root, u64 type); | |
f7039b1d | 2276 | int btrfs_trim_fs(struct btrfs_root *root, struct fstrim_range *range); |
acce952b | 2277 | |
c59021f8 | 2278 | int btrfs_init_space_info(struct btrfs_fs_info *fs_info); |
dee26a9f | 2279 | /* ctree.c */ |
5d4f98a2 YZ |
2280 | int btrfs_bin_search(struct extent_buffer *eb, struct btrfs_key *key, |
2281 | int level, int *slot); | |
2282 | int btrfs_comp_cpu_keys(struct btrfs_key *k1, struct btrfs_key *k2); | |
0b86a832 CM |
2283 | int btrfs_previous_item(struct btrfs_root *root, |
2284 | struct btrfs_path *path, u64 min_objectid, | |
2285 | int type); | |
31840ae1 ZY |
2286 | int btrfs_set_item_key_safe(struct btrfs_trans_handle *trans, |
2287 | struct btrfs_root *root, struct btrfs_path *path, | |
2288 | struct btrfs_key *new_key); | |
925baedd CM |
2289 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); |
2290 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); | |
e7a84565 | 2291 | int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path, |
3f157a2f CM |
2292 | struct btrfs_key *key, int lowest_level, |
2293 | int cache_only, u64 min_trans); | |
2294 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, | |
e02119d5 | 2295 | struct btrfs_key *max_key, |
3f157a2f CM |
2296 | struct btrfs_path *path, int cache_only, |
2297 | u64 min_trans); | |
5f39d397 CM |
2298 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
2299 | struct btrfs_root *root, struct extent_buffer *buf, | |
2300 | struct extent_buffer *parent, int parent_slot, | |
9fa8cfe7 | 2301 | struct extent_buffer **cow_ret); |
be20aa9d CM |
2302 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
2303 | struct btrfs_root *root, | |
2304 | struct extent_buffer *buf, | |
2305 | struct extent_buffer **cow_ret, u64 new_root_objectid); | |
5d4f98a2 YZ |
2306 | int btrfs_block_can_be_shared(struct btrfs_root *root, |
2307 | struct extent_buffer *buf); | |
6567e837 CM |
2308 | int btrfs_extend_item(struct btrfs_trans_handle *trans, struct btrfs_root |
2309 | *root, struct btrfs_path *path, u32 data_size); | |
b18c6685 CM |
2310 | int btrfs_truncate_item(struct btrfs_trans_handle *trans, |
2311 | struct btrfs_root *root, | |
2312 | struct btrfs_path *path, | |
179e29e4 | 2313 | u32 new_size, int from_end); |
459931ec CM |
2314 | int btrfs_split_item(struct btrfs_trans_handle *trans, |
2315 | struct btrfs_root *root, | |
2316 | struct btrfs_path *path, | |
2317 | struct btrfs_key *new_key, | |
2318 | unsigned long split_offset); | |
ad48fd75 YZ |
2319 | int btrfs_duplicate_item(struct btrfs_trans_handle *trans, |
2320 | struct btrfs_root *root, | |
2321 | struct btrfs_path *path, | |
2322 | struct btrfs_key *new_key); | |
e089f05c CM |
2323 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
2324 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
2325 | ins_len, int cow); | |
6702ed49 | 2326 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
5f39d397 | 2327 | struct btrfs_root *root, struct extent_buffer *parent, |
a6b6e75e CM |
2328 | int start_slot, int cache_only, u64 *last_ret, |
2329 | struct btrfs_key *progress); | |
b3b4aa74 | 2330 | void btrfs_release_path(struct btrfs_path *p); |
2c90e5d6 CM |
2331 | struct btrfs_path *btrfs_alloc_path(void); |
2332 | void btrfs_free_path(struct btrfs_path *p); | |
b4ce94de | 2333 | void btrfs_set_path_blocking(struct btrfs_path *p); |
16cdcec7 | 2334 | void btrfs_clear_path_blocking(struct btrfs_path *p, |
bd681513 | 2335 | struct extent_buffer *held, int held_rw); |
b4ce94de CM |
2336 | void btrfs_unlock_up_safe(struct btrfs_path *p, int level); |
2337 | ||
85e21bac CM |
2338 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2339 | struct btrfs_path *path, int slot, int nr); | |
85e21bac CM |
2340 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, |
2341 | struct btrfs_root *root, | |
2342 | struct btrfs_path *path) | |
2343 | { | |
2344 | return btrfs_del_items(trans, root, path, path->slots[0], 1); | |
2345 | } | |
2346 | ||
16cdcec7 MX |
2347 | int setup_items_for_insert(struct btrfs_trans_handle *trans, |
2348 | struct btrfs_root *root, struct btrfs_path *path, | |
2349 | struct btrfs_key *cpu_key, u32 *data_size, | |
2350 | u32 total_data, u32 total_size, int nr); | |
e089f05c CM |
2351 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root |
2352 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
9c58309d CM |
2353 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
2354 | struct btrfs_root *root, | |
2355 | struct btrfs_path *path, | |
2356 | struct btrfs_key *cpu_key, u32 *data_size, int nr); | |
2357 | ||
2358 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, | |
2359 | struct btrfs_root *root, | |
2360 | struct btrfs_path *path, | |
2361 | struct btrfs_key *key, | |
2362 | u32 data_size) | |
2363 | { | |
2364 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); | |
2365 | } | |
2366 | ||
234b63a0 | 2367 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
7bb86316 | 2368 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
5f39d397 | 2369 | int btrfs_leaf_free_space(struct btrfs_root *root, struct extent_buffer *leaf); |
3fd0a558 YZ |
2370 | int btrfs_drop_snapshot(struct btrfs_root *root, |
2371 | struct btrfs_block_rsv *block_rsv, int update_ref); | |
f82d02d9 YZ |
2372 | int btrfs_drop_subtree(struct btrfs_trans_handle *trans, |
2373 | struct btrfs_root *root, | |
2374 | struct extent_buffer *node, | |
2375 | struct extent_buffer *parent); | |
7841cb28 DS |
2376 | static inline int btrfs_fs_closing(struct btrfs_fs_info *fs_info) |
2377 | { | |
2378 | /* | |
2379 | * Get synced with close_ctree() | |
2380 | */ | |
2381 | smp_mb(); | |
2382 | return fs_info->closing; | |
2383 | } | |
2384 | ||
dee26a9f | 2385 | /* root-item.c */ |
ea9e8b11 | 2386 | int btrfs_find_root_ref(struct btrfs_root *tree_root, |
4df27c4d YZ |
2387 | struct btrfs_path *path, |
2388 | u64 root_id, u64 ref_id); | |
0660b5af CM |
2389 | int btrfs_add_root_ref(struct btrfs_trans_handle *trans, |
2390 | struct btrfs_root *tree_root, | |
4df27c4d YZ |
2391 | u64 root_id, u64 ref_id, u64 dirid, u64 sequence, |
2392 | const char *name, int name_len); | |
2393 | int btrfs_del_root_ref(struct btrfs_trans_handle *trans, | |
2394 | struct btrfs_root *tree_root, | |
2395 | u64 root_id, u64 ref_id, u64 dirid, u64 *sequence, | |
0660b5af | 2396 | const char *name, int name_len); |
e089f05c CM |
2397 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2398 | struct btrfs_key *key); | |
2399 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
2400 | *root, struct btrfs_key *key, struct btrfs_root_item | |
2401 | *item); | |
2402 | int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
2403 | *root, struct btrfs_key *key, struct btrfs_root_item | |
2404 | *item); | |
2405 | int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct | |
2406 | btrfs_root_item *item, struct btrfs_key *key); | |
5d4f98a2 | 2407 | int btrfs_find_dead_roots(struct btrfs_root *root, u64 objectid); |
76dda93c | 2408 | int btrfs_find_orphan_roots(struct btrfs_root *tree_root); |
bf5f32ec MF |
2409 | void btrfs_set_root_node(struct btrfs_root_item *item, |
2410 | struct extent_buffer *node); | |
08fe4db1 LZ |
2411 | void btrfs_check_and_init_root_item(struct btrfs_root_item *item); |
2412 | ||
dee26a9f | 2413 | /* dir-item.c */ |
d397712b CM |
2414 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, |
2415 | struct btrfs_root *root, const char *name, | |
16cdcec7 | 2416 | int name_len, struct inode *dir, |
aec7477b | 2417 | struct btrfs_key *location, u8 type, u64 index); |
7e38180e CM |
2418 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
2419 | struct btrfs_root *root, | |
2420 | struct btrfs_path *path, u64 dir, | |
2421 | const char *name, int name_len, | |
2422 | int mod); | |
2423 | struct btrfs_dir_item * | |
2424 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
2425 | struct btrfs_root *root, | |
2426 | struct btrfs_path *path, u64 dir, | |
2427 | u64 objectid, const char *name, int name_len, | |
2428 | int mod); | |
4df27c4d YZ |
2429 | struct btrfs_dir_item * |
2430 | btrfs_search_dir_index_item(struct btrfs_root *root, | |
2431 | struct btrfs_path *path, u64 dirid, | |
2432 | const char *name, int name_len); | |
7e38180e CM |
2433 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, |
2434 | struct btrfs_path *path, | |
7f5c1516 | 2435 | const char *name, int name_len); |
7e38180e CM |
2436 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
2437 | struct btrfs_root *root, | |
2438 | struct btrfs_path *path, | |
2439 | struct btrfs_dir_item *di); | |
5103e947 | 2440 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
f34f57a3 YZ |
2441 | struct btrfs_root *root, |
2442 | struct btrfs_path *path, u64 objectid, | |
2443 | const char *name, u16 name_len, | |
2444 | const void *data, u16 data_len); | |
5103e947 JB |
2445 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, |
2446 | struct btrfs_root *root, | |
2447 | struct btrfs_path *path, u64 dir, | |
2448 | const char *name, u16 name_len, | |
2449 | int mod); | |
22a94d44 JB |
2450 | int verify_dir_item(struct btrfs_root *root, |
2451 | struct extent_buffer *leaf, | |
2452 | struct btrfs_dir_item *dir_item); | |
7b128766 JB |
2453 | |
2454 | /* orphan.c */ | |
2455 | int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, | |
2456 | struct btrfs_root *root, u64 offset); | |
2457 | int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, | |
2458 | struct btrfs_root *root, u64 offset); | |
4df27c4d | 2459 | int btrfs_find_orphan_item(struct btrfs_root *root, u64 offset); |
7b128766 | 2460 | |
dee26a9f | 2461 | /* inode-item.c */ |
3954401f CM |
2462 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
2463 | struct btrfs_root *root, | |
2464 | const char *name, int name_len, | |
aec7477b | 2465 | u64 inode_objectid, u64 ref_objectid, u64 index); |
3954401f CM |
2466 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, |
2467 | struct btrfs_root *root, | |
2468 | const char *name, int name_len, | |
aec7477b | 2469 | u64 inode_objectid, u64 ref_objectid, u64 *index); |
a22285a6 YZ |
2470 | struct btrfs_inode_ref * |
2471 | btrfs_lookup_inode_ref(struct btrfs_trans_handle *trans, | |
2472 | struct btrfs_root *root, | |
2473 | struct btrfs_path *path, | |
2474 | const char *name, int name_len, | |
2475 | u64 inode_objectid, u64 ref_objectid, int mod); | |
5f39d397 CM |
2476 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
2477 | struct btrfs_root *root, | |
2478 | struct btrfs_path *path, u64 objectid); | |
293ffd5f | 2479 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
2480 | *root, struct btrfs_path *path, |
2481 | struct btrfs_key *location, int mod); | |
dee26a9f CM |
2482 | |
2483 | /* file-item.c */ | |
459931ec CM |
2484 | int btrfs_del_csums(struct btrfs_trans_handle *trans, |
2485 | struct btrfs_root *root, u64 bytenr, u64 len); | |
61b49440 | 2486 | int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 2487 | struct bio *bio, u32 *dst); |
4b46fce2 JB |
2488 | int btrfs_lookup_bio_sums_dio(struct btrfs_root *root, struct inode *inode, |
2489 | struct bio *bio, u64 logical_offset, u32 *dst); | |
b18c6685 | 2490 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
c8b97818 CM |
2491 | struct btrfs_root *root, |
2492 | u64 objectid, u64 pos, | |
2493 | u64 disk_offset, u64 disk_num_bytes, | |
2494 | u64 num_bytes, u64 offset, u64 ram_bytes, | |
2495 | u8 compression, u8 encryption, u16 other_encoding); | |
dee26a9f CM |
2496 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
2497 | struct btrfs_root *root, | |
2498 | struct btrfs_path *path, u64 objectid, | |
db94535d | 2499 | u64 bytenr, int mod); |
065631f6 | 2500 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
d20f7043 | 2501 | struct btrfs_root *root, |
e6dcd2dc | 2502 | struct btrfs_ordered_sum *sums); |
3edf7d33 | 2503 | int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 2504 | struct bio *bio, u64 file_start, int contig); |
b18c6685 CM |
2505 | struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans, |
2506 | struct btrfs_root *root, | |
2507 | struct btrfs_path *path, | |
d20f7043 | 2508 | u64 bytenr, int cow); |
1de037a4 CM |
2509 | int btrfs_csum_truncate(struct btrfs_trans_handle *trans, |
2510 | struct btrfs_root *root, struct btrfs_path *path, | |
2511 | u64 isize); | |
a2de733c AJ |
2512 | int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end, |
2513 | struct list_head *list, int search_commit); | |
39279cc3 | 2514 | /* inode.c */ |
b2675157 JB |
2515 | struct extent_map *btrfs_get_extent_fiemap(struct inode *inode, struct page *page, |
2516 | size_t pg_offset, u64 start, u64 len, | |
2517 | int create); | |
4881ee5a CM |
2518 | |
2519 | /* RHEL and EL kernels have a patch that renames PG_checked to FsMisc */ | |
5036f538 | 2520 | #if defined(ClearPageFsMisc) && !defined(ClearPageChecked) |
4881ee5a CM |
2521 | #define ClearPageChecked ClearPageFsMisc |
2522 | #define SetPageChecked SetPageFsMisc | |
2523 | #define PageChecked PageFsMisc | |
2524 | #endif | |
2525 | ||
b6973aa6 LZ |
2526 | /* This forces readahead on a given range of bytes in an inode */ |
2527 | static inline void btrfs_force_ra(struct address_space *mapping, | |
2528 | struct file_ra_state *ra, struct file *file, | |
2529 | pgoff_t offset, unsigned long req_size) | |
2530 | { | |
2531 | page_cache_sync_readahead(mapping, ra, file, offset, req_size); | |
2532 | } | |
2533 | ||
3de4586c CM |
2534 | struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry); |
2535 | int btrfs_set_inode_index(struct inode *dir, u64 *index); | |
e02119d5 CM |
2536 | int btrfs_unlink_inode(struct btrfs_trans_handle *trans, |
2537 | struct btrfs_root *root, | |
2538 | struct inode *dir, struct inode *inode, | |
2539 | const char *name, int name_len); | |
2540 | int btrfs_add_link(struct btrfs_trans_handle *trans, | |
2541 | struct inode *parent_inode, struct inode *inode, | |
2542 | const char *name, int name_len, int add_backref, u64 index); | |
4df27c4d YZ |
2543 | int btrfs_unlink_subvol(struct btrfs_trans_handle *trans, |
2544 | struct btrfs_root *root, | |
2545 | struct inode *dir, u64 objectid, | |
2546 | const char *name, int name_len); | |
e02119d5 CM |
2547 | int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, |
2548 | struct btrfs_root *root, | |
2549 | struct inode *inode, u64 new_size, | |
2550 | u32 min_type); | |
2551 | ||
24bbcf04 | 2552 | int btrfs_start_delalloc_inodes(struct btrfs_root *root, int delay_iput); |
2ac55d41 JB |
2553 | int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end, |
2554 | struct extent_state **cached_state); | |
f421950f CM |
2555 | int btrfs_writepages(struct address_space *mapping, |
2556 | struct writeback_control *wbc); | |
d2fb3437 | 2557 | int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, |
d82a6f1d | 2558 | struct btrfs_root *new_root, u64 new_dirid); |
239b14b3 | 2559 | int btrfs_merge_bio_hook(struct page *page, unsigned long offset, |
c8b97818 | 2560 | size_t size, struct bio *bio, unsigned long bio_flags); |
239b14b3 | 2561 | |
c2ec175c | 2562 | int btrfs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf); |
9ebefb18 | 2563 | int btrfs_readpage(struct file *file, struct page *page); |
bd555975 | 2564 | void btrfs_evict_inode(struct inode *inode); |
a9185b41 | 2565 | int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc); |
aa385729 | 2566 | void btrfs_dirty_inode(struct inode *inode, int flags); |
39279cc3 CM |
2567 | struct inode *btrfs_alloc_inode(struct super_block *sb); |
2568 | void btrfs_destroy_inode(struct inode *inode); | |
45321ac5 | 2569 | int btrfs_drop_inode(struct inode *inode); |
39279cc3 CM |
2570 | int btrfs_init_cachep(void); |
2571 | void btrfs_destroy_cachep(void); | |
6bf13c0c | 2572 | long btrfs_ioctl_trans_end(struct file *file); |
1a54ef8c | 2573 | struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location, |
73f73415 | 2574 | struct btrfs_root *root, int *was_new); |
a52d9a80 | 2575 | struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page, |
306e16ce | 2576 | size_t pg_offset, u64 start, u64 end, |
a52d9a80 CM |
2577 | int create); |
2578 | int btrfs_update_inode(struct btrfs_trans_handle *trans, | |
2579 | struct btrfs_root *root, | |
2580 | struct inode *inode); | |
5b21f2ed ZY |
2581 | int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode); |
2582 | int btrfs_orphan_del(struct btrfs_trans_handle *trans, struct inode *inode); | |
66b4ffd1 | 2583 | int btrfs_orphan_cleanup(struct btrfs_root *root); |
d68fc57b YZ |
2584 | void btrfs_orphan_pre_snapshot(struct btrfs_trans_handle *trans, |
2585 | struct btrfs_pending_snapshot *pending, | |
2586 | u64 *bytes_to_reserve); | |
2587 | void btrfs_orphan_post_snapshot(struct btrfs_trans_handle *trans, | |
2588 | struct btrfs_pending_snapshot *pending); | |
2589 | void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans, | |
2590 | struct btrfs_root *root); | |
a41ad394 | 2591 | int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size); |
76dda93c | 2592 | int btrfs_invalidate_inodes(struct btrfs_root *root); |
24bbcf04 YZ |
2593 | void btrfs_add_delayed_iput(struct inode *inode); |
2594 | void btrfs_run_delayed_iputs(struct btrfs_root *root); | |
efa56464 YZ |
2595 | int btrfs_prealloc_file_range(struct inode *inode, int mode, |
2596 | u64 start, u64 num_bytes, u64 min_size, | |
2597 | loff_t actual_len, u64 *alloc_hint); | |
0af3d00b JB |
2598 | int btrfs_prealloc_file_range_trans(struct inode *inode, |
2599 | struct btrfs_trans_handle *trans, int mode, | |
2600 | u64 start, u64 num_bytes, u64 min_size, | |
2601 | loff_t actual_len, u64 *alloc_hint); | |
82d339d9 | 2602 | extern const struct dentry_operations btrfs_dentry_operations; |
f46b5a66 CH |
2603 | |
2604 | /* ioctl.c */ | |
2605 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
6cbff00f CH |
2606 | void btrfs_update_iflags(struct inode *inode); |
2607 | void btrfs_inherit_iflags(struct inode *inode, struct inode *dir); | |
4cb5300b CM |
2608 | int btrfs_defrag_file(struct inode *inode, struct file *file, |
2609 | struct btrfs_ioctl_defrag_range_args *range, | |
2610 | u64 newer_than, unsigned long max_pages); | |
39279cc3 | 2611 | /* file.c */ |
4cb5300b CM |
2612 | int btrfs_add_inode_defrag(struct btrfs_trans_handle *trans, |
2613 | struct inode *inode); | |
2614 | int btrfs_run_defrag_inodes(struct btrfs_fs_info *fs_info); | |
02c24a82 | 2615 | int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync); |
5b21f2ed ZY |
2616 | int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end, |
2617 | int skip_pinned); | |
828c0950 | 2618 | extern const struct file_operations btrfs_file_operations; |
920bbbfb YZ |
2619 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, struct inode *inode, |
2620 | u64 start, u64 end, u64 *hint_byte, int drop_cache); | |
d899e052 | 2621 | int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, |
d899e052 | 2622 | struct inode *inode, u64 start, u64 end); |
6bf13c0c | 2623 | int btrfs_release_file(struct inode *inode, struct file *file); |
be1a12a0 JB |
2624 | void btrfs_drop_pages(struct page **pages, size_t num_pages); |
2625 | int btrfs_dirty_pages(struct btrfs_root *root, struct inode *inode, | |
2626 | struct page **pages, size_t num_pages, | |
2627 | loff_t pos, size_t write_bytes, | |
2628 | struct extent_state **cached); | |
6bf13c0c | 2629 | |
6702ed49 CM |
2630 | /* tree-defrag.c */ |
2631 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, | |
2632 | struct btrfs_root *root, int cache_only); | |
58176a96 JB |
2633 | |
2634 | /* sysfs.c */ | |
2635 | int btrfs_init_sysfs(void); | |
2636 | void btrfs_exit_sysfs(void); | |
58176a96 | 2637 | |
5103e947 JB |
2638 | /* xattr.c */ |
2639 | ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size); | |
6099afe8 | 2640 | |
edbd8d4e | 2641 | /* super.c */ |
edf24abe | 2642 | int btrfs_parse_options(struct btrfs_root *root, char *options); |
6bf13c0c | 2643 | int btrfs_sync_fs(struct super_block *sb, int wait); |
acce952b | 2644 | void __btrfs_std_error(struct btrfs_fs_info *fs_info, const char *function, |
2645 | unsigned int line, int errno); | |
2646 | ||
2647 | #define btrfs_std_error(fs_info, errno) \ | |
2648 | do { \ | |
2649 | if ((errno)) \ | |
2650 | __btrfs_std_error((fs_info), __func__, __LINE__, (errno));\ | |
2651 | } while (0) | |
33268eaf JB |
2652 | |
2653 | /* acl.c */ | |
0eda294d | 2654 | #ifdef CONFIG_BTRFS_FS_POSIX_ACL |
4e34e719 | 2655 | struct posix_acl *btrfs_get_acl(struct inode *inode, int type); |
f34f57a3 YZ |
2656 | int btrfs_init_acl(struct btrfs_trans_handle *trans, |
2657 | struct inode *inode, struct inode *dir); | |
33268eaf | 2658 | int btrfs_acl_chmod(struct inode *inode); |
9b89d95a | 2659 | #else |
ed8f3737 | 2660 | #define btrfs_get_acl NULL |
9b89d95a LZ |
2661 | static inline int btrfs_init_acl(struct btrfs_trans_handle *trans, |
2662 | struct inode *inode, struct inode *dir) | |
2663 | { | |
2664 | return 0; | |
2665 | } | |
2666 | static inline int btrfs_acl_chmod(struct inode *inode) | |
2667 | { | |
2668 | return 0; | |
2669 | } | |
2670 | #endif | |
0f9dd46c | 2671 | |
5d4f98a2 YZ |
2672 | /* relocation.c */ |
2673 | int btrfs_relocate_block_group(struct btrfs_root *root, u64 group_start); | |
2674 | int btrfs_init_reloc_root(struct btrfs_trans_handle *trans, | |
2675 | struct btrfs_root *root); | |
2676 | int btrfs_update_reloc_root(struct btrfs_trans_handle *trans, | |
2677 | struct btrfs_root *root); | |
2678 | int btrfs_recover_relocation(struct btrfs_root *root); | |
2679 | int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len); | |
3fd0a558 YZ |
2680 | void btrfs_reloc_cow_block(struct btrfs_trans_handle *trans, |
2681 | struct btrfs_root *root, struct extent_buffer *buf, | |
2682 | struct extent_buffer *cow); | |
2683 | void btrfs_reloc_pre_snapshot(struct btrfs_trans_handle *trans, | |
2684 | struct btrfs_pending_snapshot *pending, | |
2685 | u64 *bytes_to_reserve); | |
2686 | void btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans, | |
2687 | struct btrfs_pending_snapshot *pending); | |
a2de733c AJ |
2688 | |
2689 | /* scrub.c */ | |
2690 | int btrfs_scrub_dev(struct btrfs_root *root, u64 devid, u64 start, u64 end, | |
8628764e | 2691 | struct btrfs_scrub_progress *progress, int readonly); |
a2de733c AJ |
2692 | int btrfs_scrub_pause(struct btrfs_root *root); |
2693 | int btrfs_scrub_pause_super(struct btrfs_root *root); | |
2694 | int btrfs_scrub_continue(struct btrfs_root *root); | |
2695 | int btrfs_scrub_continue_super(struct btrfs_root *root); | |
2696 | int btrfs_scrub_cancel(struct btrfs_root *root); | |
2697 | int btrfs_scrub_cancel_dev(struct btrfs_root *root, struct btrfs_device *dev); | |
2698 | int btrfs_scrub_cancel_devid(struct btrfs_root *root, u64 devid); | |
2699 | int btrfs_scrub_progress(struct btrfs_root *root, u64 devid, | |
2700 | struct btrfs_scrub_progress *progress); | |
2701 | ||
eb60ceac | 2702 | #endif |