Commit | Line | Data |
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0a8165d7 | 1 | /* |
39a53e0c JK |
2 | * fs/f2fs/f2fs.h |
3 | * | |
4 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. | |
5 | * http://www.samsung.com/ | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | #ifndef _LINUX_F2FS_H | |
12 | #define _LINUX_F2FS_H | |
13 | ||
14 | #include <linux/types.h> | |
15 | #include <linux/page-flags.h> | |
16 | #include <linux/buffer_head.h> | |
39a53e0c JK |
17 | #include <linux/slab.h> |
18 | #include <linux/crc32.h> | |
19 | #include <linux/magic.h> | |
c2d715d1 | 20 | #include <linux/kobject.h> |
7bd59381 | 21 | #include <linux/sched.h> |
39a53e0c | 22 | |
5d56b671 JK |
23 | #ifdef CONFIG_F2FS_CHECK_FS |
24 | #define f2fs_bug_on(condition) BUG_ON(condition) | |
0daaad97 | 25 | #define f2fs_down_write(x, y) down_write_nest_lock(x, y) |
5d56b671 JK |
26 | #else |
27 | #define f2fs_bug_on(condition) | |
0daaad97 | 28 | #define f2fs_down_write(x, y) down_write(x) |
5d56b671 JK |
29 | #endif |
30 | ||
39a53e0c JK |
31 | /* |
32 | * For mount options | |
33 | */ | |
34 | #define F2FS_MOUNT_BG_GC 0x00000001 | |
35 | #define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002 | |
36 | #define F2FS_MOUNT_DISCARD 0x00000004 | |
37 | #define F2FS_MOUNT_NOHEAP 0x00000008 | |
38 | #define F2FS_MOUNT_XATTR_USER 0x00000010 | |
39 | #define F2FS_MOUNT_POSIX_ACL 0x00000020 | |
40 | #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040 | |
444c580f | 41 | #define F2FS_MOUNT_INLINE_XATTR 0x00000080 |
1001b347 | 42 | #define F2FS_MOUNT_INLINE_DATA 0x00000100 |
39a53e0c JK |
43 | |
44 | #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option) | |
45 | #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option) | |
46 | #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option) | |
47 | ||
48 | #define ver_after(a, b) (typecheck(unsigned long long, a) && \ | |
49 | typecheck(unsigned long long, b) && \ | |
50 | ((long long)((a) - (b)) > 0)) | |
51 | ||
a9841c4d JK |
52 | typedef u32 block_t; /* |
53 | * should not change u32, since it is the on-disk block | |
54 | * address format, __le32. | |
55 | */ | |
39a53e0c JK |
56 | typedef u32 nid_t; |
57 | ||
58 | struct f2fs_mount_info { | |
59 | unsigned int opt; | |
60 | }; | |
61 | ||
7e586fa0 JK |
62 | #define CRCPOLY_LE 0xedb88320 |
63 | ||
64 | static inline __u32 f2fs_crc32(void *buf, size_t len) | |
39a53e0c | 65 | { |
7e586fa0 JK |
66 | unsigned char *p = (unsigned char *)buf; |
67 | __u32 crc = F2FS_SUPER_MAGIC; | |
68 | int i; | |
69 | ||
70 | while (len--) { | |
71 | crc ^= *p++; | |
72 | for (i = 0; i < 8; i++) | |
73 | crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0); | |
74 | } | |
75 | return crc; | |
39a53e0c JK |
76 | } |
77 | ||
7e586fa0 | 78 | static inline bool f2fs_crc_valid(__u32 blk_crc, void *buf, size_t buf_size) |
39a53e0c | 79 | { |
7e586fa0 | 80 | return f2fs_crc32(buf, buf_size) == blk_crc; |
39a53e0c JK |
81 | } |
82 | ||
83 | /* | |
84 | * For checkpoint manager | |
85 | */ | |
86 | enum { | |
87 | NAT_BITMAP, | |
88 | SIT_BITMAP | |
89 | }; | |
90 | ||
91 | /* for the list of orphan inodes */ | |
92 | struct orphan_inode_entry { | |
93 | struct list_head list; /* list head */ | |
94 | nid_t ino; /* inode number */ | |
95 | }; | |
96 | ||
97 | /* for the list of directory inodes */ | |
98 | struct dir_inode_entry { | |
99 | struct list_head list; /* list head */ | |
100 | struct inode *inode; /* vfs inode pointer */ | |
101 | }; | |
102 | ||
7fd9e544 JK |
103 | /* for the list of blockaddresses to be discarded */ |
104 | struct discard_entry { | |
105 | struct list_head list; /* list head */ | |
106 | block_t blkaddr; /* block address to be discarded */ | |
107 | int len; /* # of consecutive blocks of the discard */ | |
108 | }; | |
109 | ||
39a53e0c JK |
110 | /* for the list of fsync inodes, used only during recovery */ |
111 | struct fsync_inode_entry { | |
112 | struct list_head list; /* list head */ | |
113 | struct inode *inode; /* vfs inode pointer */ | |
114 | block_t blkaddr; /* block address locating the last inode */ | |
115 | }; | |
116 | ||
117 | #define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats)) | |
118 | #define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits)) | |
119 | ||
120 | #define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne) | |
121 | #define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid) | |
122 | #define sit_in_journal(sum, i) (sum->sit_j.entries[i].se) | |
123 | #define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno) | |
124 | ||
125 | static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i) | |
126 | { | |
127 | int before = nats_in_cursum(rs); | |
128 | rs->n_nats = cpu_to_le16(before + i); | |
129 | return before; | |
130 | } | |
131 | ||
132 | static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i) | |
133 | { | |
134 | int before = sits_in_cursum(rs); | |
135 | rs->n_sits = cpu_to_le16(before + i); | |
136 | return before; | |
137 | } | |
138 | ||
e9750824 NJ |
139 | /* |
140 | * ioctl commands | |
141 | */ | |
142 | #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS | |
143 | #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS | |
144 | ||
145 | #if defined(__KERNEL__) && defined(CONFIG_COMPAT) | |
146 | /* | |
147 | * ioctl commands in 32 bit emulation | |
148 | */ | |
149 | #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS | |
150 | #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS | |
151 | #endif | |
152 | ||
39a53e0c JK |
153 | /* |
154 | * For INODE and NODE manager | |
155 | */ | |
dbe6a5ff JK |
156 | /* |
157 | * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1 | |
158 | * as its node offset to distinguish from index node blocks. | |
159 | * But some bits are used to mark the node block. | |
160 | */ | |
161 | #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \ | |
162 | >> OFFSET_BIT_SHIFT) | |
266e97a8 JK |
163 | enum { |
164 | ALLOC_NODE, /* allocate a new node page if needed */ | |
165 | LOOKUP_NODE, /* look up a node without readahead */ | |
166 | LOOKUP_NODE_RA, /* | |
167 | * look up a node with readahead called | |
168 | * by get_datablock_ro. | |
39a53e0c | 169 | */ |
266e97a8 JK |
170 | }; |
171 | ||
39a53e0c JK |
172 | #define F2FS_LINK_MAX 32000 /* maximum link count per file */ |
173 | ||
174 | /* for in-memory extent cache entry */ | |
c11abd1a JK |
175 | #define F2FS_MIN_EXTENT_LEN 16 /* minimum extent length */ |
176 | ||
39a53e0c JK |
177 | struct extent_info { |
178 | rwlock_t ext_lock; /* rwlock for consistency */ | |
179 | unsigned int fofs; /* start offset in a file */ | |
180 | u32 blk_addr; /* start block address of the extent */ | |
111d2495 | 181 | unsigned int len; /* length of the extent */ |
39a53e0c JK |
182 | }; |
183 | ||
184 | /* | |
185 | * i_advise uses FADVISE_XXX_BIT. We can add additional hints later. | |
186 | */ | |
187 | #define FADVISE_COLD_BIT 0x01 | |
354a3399 | 188 | #define FADVISE_LOST_PINO_BIT 0x02 |
39a53e0c JK |
189 | |
190 | struct f2fs_inode_info { | |
191 | struct inode vfs_inode; /* serve a vfs inode */ | |
192 | unsigned long i_flags; /* keep an inode flags for ioctl */ | |
193 | unsigned char i_advise; /* use to give file attribute hints */ | |
194 | unsigned int i_current_depth; /* use only in directory structure */ | |
6666e6aa | 195 | unsigned int i_pino; /* parent inode number */ |
39a53e0c JK |
196 | umode_t i_acl_mode; /* keep file acl mode temporarily */ |
197 | ||
198 | /* Use below internally in f2fs*/ | |
199 | unsigned long flags; /* use to pass per-file flags */ | |
39a53e0c JK |
200 | atomic_t dirty_dents; /* # of dirty dentry pages */ |
201 | f2fs_hash_t chash; /* hash value of given file name */ | |
202 | unsigned int clevel; /* maximum level of given file name */ | |
203 | nid_t i_xattr_nid; /* node id that contains xattrs */ | |
e518ff81 | 204 | unsigned long long xattr_ver; /* cp version of xattr modification */ |
39a53e0c JK |
205 | struct extent_info ext; /* in-memory extent cache entry */ |
206 | }; | |
207 | ||
208 | static inline void get_extent_info(struct extent_info *ext, | |
209 | struct f2fs_extent i_ext) | |
210 | { | |
211 | write_lock(&ext->ext_lock); | |
212 | ext->fofs = le32_to_cpu(i_ext.fofs); | |
213 | ext->blk_addr = le32_to_cpu(i_ext.blk_addr); | |
214 | ext->len = le32_to_cpu(i_ext.len); | |
215 | write_unlock(&ext->ext_lock); | |
216 | } | |
217 | ||
218 | static inline void set_raw_extent(struct extent_info *ext, | |
219 | struct f2fs_extent *i_ext) | |
220 | { | |
221 | read_lock(&ext->ext_lock); | |
222 | i_ext->fofs = cpu_to_le32(ext->fofs); | |
223 | i_ext->blk_addr = cpu_to_le32(ext->blk_addr); | |
224 | i_ext->len = cpu_to_le32(ext->len); | |
225 | read_unlock(&ext->ext_lock); | |
226 | } | |
227 | ||
228 | struct f2fs_nm_info { | |
229 | block_t nat_blkaddr; /* base disk address of NAT */ | |
230 | nid_t max_nid; /* maximum possible node ids */ | |
39a53e0c JK |
231 | nid_t next_scan_nid; /* the next nid to be scanned */ |
232 | ||
233 | /* NAT cache management */ | |
234 | struct radix_tree_root nat_root;/* root of the nat entry cache */ | |
235 | rwlock_t nat_tree_lock; /* protect nat_tree_lock */ | |
236 | unsigned int nat_cnt; /* the # of cached nat entries */ | |
237 | struct list_head nat_entries; /* cached nat entry list (clean) */ | |
238 | struct list_head dirty_nat_entries; /* cached nat entry list (dirty) */ | |
239 | ||
240 | /* free node ids management */ | |
241 | struct list_head free_nid_list; /* a list for free nids */ | |
242 | spinlock_t free_nid_list_lock; /* protect free nid list */ | |
243 | unsigned int fcnt; /* the number of free node id */ | |
244 | struct mutex build_lock; /* lock for build free nids */ | |
245 | ||
246 | /* for checkpoint */ | |
247 | char *nat_bitmap; /* NAT bitmap pointer */ | |
248 | int bitmap_size; /* bitmap size */ | |
249 | }; | |
250 | ||
251 | /* | |
252 | * this structure is used as one of function parameters. | |
253 | * all the information are dedicated to a given direct node block determined | |
254 | * by the data offset in a file. | |
255 | */ | |
256 | struct dnode_of_data { | |
257 | struct inode *inode; /* vfs inode pointer */ | |
258 | struct page *inode_page; /* its inode page, NULL is possible */ | |
259 | struct page *node_page; /* cached direct node page */ | |
260 | nid_t nid; /* node id of the direct node block */ | |
261 | unsigned int ofs_in_node; /* data offset in the node page */ | |
262 | bool inode_page_locked; /* inode page is locked or not */ | |
263 | block_t data_blkaddr; /* block address of the node block */ | |
264 | }; | |
265 | ||
266 | static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode, | |
267 | struct page *ipage, struct page *npage, nid_t nid) | |
268 | { | |
d66d1f76 | 269 | memset(dn, 0, sizeof(*dn)); |
39a53e0c JK |
270 | dn->inode = inode; |
271 | dn->inode_page = ipage; | |
272 | dn->node_page = npage; | |
273 | dn->nid = nid; | |
39a53e0c JK |
274 | } |
275 | ||
276 | /* | |
277 | * For SIT manager | |
278 | * | |
279 | * By default, there are 6 active log areas across the whole main area. | |
280 | * When considering hot and cold data separation to reduce cleaning overhead, | |
281 | * we split 3 for data logs and 3 for node logs as hot, warm, and cold types, | |
282 | * respectively. | |
283 | * In the current design, you should not change the numbers intentionally. | |
284 | * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6 | |
285 | * logs individually according to the underlying devices. (default: 6) | |
286 | * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for | |
287 | * data and 8 for node logs. | |
288 | */ | |
289 | #define NR_CURSEG_DATA_TYPE (3) | |
290 | #define NR_CURSEG_NODE_TYPE (3) | |
291 | #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE) | |
292 | ||
293 | enum { | |
294 | CURSEG_HOT_DATA = 0, /* directory entry blocks */ | |
295 | CURSEG_WARM_DATA, /* data blocks */ | |
296 | CURSEG_COLD_DATA, /* multimedia or GCed data blocks */ | |
297 | CURSEG_HOT_NODE, /* direct node blocks of directory files */ | |
298 | CURSEG_WARM_NODE, /* direct node blocks of normal files */ | |
299 | CURSEG_COLD_NODE, /* indirect node blocks */ | |
300 | NO_CHECK_TYPE | |
301 | }; | |
302 | ||
303 | struct f2fs_sm_info { | |
304 | struct sit_info *sit_info; /* whole segment information */ | |
305 | struct free_segmap_info *free_info; /* free segment information */ | |
306 | struct dirty_seglist_info *dirty_info; /* dirty segment information */ | |
307 | struct curseg_info *curseg_array; /* active segment information */ | |
308 | ||
309 | struct list_head wblist_head; /* list of under-writeback pages */ | |
310 | spinlock_t wblist_lock; /* lock for checkpoint */ | |
311 | ||
312 | block_t seg0_blkaddr; /* block address of 0'th segment */ | |
313 | block_t main_blkaddr; /* start block address of main area */ | |
314 | block_t ssa_blkaddr; /* start block address of SSA area */ | |
315 | ||
316 | unsigned int segment_count; /* total # of segments */ | |
317 | unsigned int main_segments; /* # of segments in main area */ | |
318 | unsigned int reserved_segments; /* # of reserved segments */ | |
319 | unsigned int ovp_segments; /* # of overprovision segments */ | |
81eb8d6e JK |
320 | |
321 | /* a threshold to reclaim prefree segments */ | |
322 | unsigned int rec_prefree_segments; | |
7fd9e544 JK |
323 | |
324 | /* for small discard management */ | |
325 | struct list_head discard_list; /* 4KB discard list */ | |
326 | int nr_discards; /* # of discards in the list */ | |
327 | int max_discards; /* max. discards to be issued */ | |
39a53e0c JK |
328 | }; |
329 | ||
39a53e0c JK |
330 | /* |
331 | * For superblock | |
332 | */ | |
333 | /* | |
334 | * COUNT_TYPE for monitoring | |
335 | * | |
336 | * f2fs monitors the number of several block types such as on-writeback, | |
337 | * dirty dentry blocks, dirty node blocks, and dirty meta blocks. | |
338 | */ | |
339 | enum count_type { | |
340 | F2FS_WRITEBACK, | |
341 | F2FS_DIRTY_DENTS, | |
342 | F2FS_DIRTY_NODES, | |
343 | F2FS_DIRTY_META, | |
344 | NR_COUNT_TYPE, | |
345 | }; | |
346 | ||
39a53e0c JK |
347 | /* |
348 | * The below are the page types of bios used in submti_bio(). | |
349 | * The available types are: | |
350 | * DATA User data pages. It operates as async mode. | |
351 | * NODE Node pages. It operates as async mode. | |
352 | * META FS metadata pages such as SIT, NAT, CP. | |
353 | * NR_PAGE_TYPE The number of page types. | |
354 | * META_FLUSH Make sure the previous pages are written | |
355 | * with waiting the bio's completion | |
356 | * ... Only can be used with META. | |
357 | */ | |
7d5e5109 | 358 | #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type)) |
39a53e0c JK |
359 | enum page_type { |
360 | DATA, | |
361 | NODE, | |
362 | META, | |
363 | NR_PAGE_TYPE, | |
364 | META_FLUSH, | |
365 | }; | |
366 | ||
458e6197 JK |
367 | struct f2fs_io_info { |
368 | enum page_type type; /* contains DATA/NODE/META/META_FLUSH */ | |
369 | int rw; /* contains R/RS/W/WS */ | |
370 | int rw_flag; /* contains REQ_META/REQ_PRIO */ | |
371 | }; | |
372 | ||
93dfe2ac | 373 | #define is_read_io(rw) (((rw) & 1) == READ) |
1ff7bd3b | 374 | struct f2fs_bio_info { |
458e6197 | 375 | struct f2fs_sb_info *sbi; /* f2fs superblock */ |
1ff7bd3b JK |
376 | struct bio *bio; /* bios to merge */ |
377 | sector_t last_block_in_bio; /* last block number */ | |
458e6197 | 378 | struct f2fs_io_info fio; /* store buffered io info. */ |
1ff7bd3b JK |
379 | struct mutex io_mutex; /* mutex for bio */ |
380 | }; | |
381 | ||
39a53e0c JK |
382 | struct f2fs_sb_info { |
383 | struct super_block *sb; /* pointer to VFS super block */ | |
5e176d54 | 384 | struct proc_dir_entry *s_proc; /* proc entry */ |
39a53e0c JK |
385 | struct buffer_head *raw_super_buf; /* buffer head of raw sb */ |
386 | struct f2fs_super_block *raw_super; /* raw super block pointer */ | |
387 | int s_dirty; /* dirty flag for checkpoint */ | |
388 | ||
389 | /* for node-related operations */ | |
390 | struct f2fs_nm_info *nm_info; /* node manager */ | |
391 | struct inode *node_inode; /* cache node blocks */ | |
392 | ||
393 | /* for segment-related operations */ | |
394 | struct f2fs_sm_info *sm_info; /* segment manager */ | |
1ff7bd3b JK |
395 | |
396 | /* for bio operations */ | |
924b720b | 397 | struct f2fs_bio_info read_io; /* for read bios */ |
1ff7bd3b | 398 | struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */ |
39a53e0c JK |
399 | |
400 | /* for checkpoint */ | |
401 | struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */ | |
402 | struct inode *meta_inode; /* cache meta blocks */ | |
39936837 | 403 | struct mutex cp_mutex; /* checkpoint procedure lock */ |
e479556b | 404 | struct rw_semaphore cp_rwsem; /* blocking FS operations */ |
39936837 | 405 | struct mutex node_write; /* locking node writes */ |
39a53e0c | 406 | struct mutex writepages; /* mutex for writepages() */ |
aabe5136 HL |
407 | bool por_doing; /* recovery is doing or not */ |
408 | bool on_build_free_nids; /* build_free_nids is doing */ | |
fb51b5ef | 409 | wait_queue_head_t cp_wait; |
39a53e0c JK |
410 | |
411 | /* for orphan inode management */ | |
412 | struct list_head orphan_inode_list; /* orphan inode list */ | |
413 | struct mutex orphan_inode_mutex; /* for orphan inode list */ | |
414 | unsigned int n_orphans; /* # of orphan inodes */ | |
415 | ||
416 | /* for directory inode management */ | |
417 | struct list_head dir_inode_list; /* dir inode list */ | |
418 | spinlock_t dir_inode_lock; /* for dir inode list lock */ | |
39a53e0c JK |
419 | |
420 | /* basic file system units */ | |
421 | unsigned int log_sectors_per_block; /* log2 sectors per block */ | |
422 | unsigned int log_blocksize; /* log2 block size */ | |
423 | unsigned int blocksize; /* block size */ | |
424 | unsigned int root_ino_num; /* root inode number*/ | |
425 | unsigned int node_ino_num; /* node inode number*/ | |
426 | unsigned int meta_ino_num; /* meta inode number*/ | |
427 | unsigned int log_blocks_per_seg; /* log2 blocks per segment */ | |
428 | unsigned int blocks_per_seg; /* blocks per segment */ | |
429 | unsigned int segs_per_sec; /* segments per section */ | |
430 | unsigned int secs_per_zone; /* sections per zone */ | |
431 | unsigned int total_sections; /* total section count */ | |
432 | unsigned int total_node_count; /* total node block count */ | |
433 | unsigned int total_valid_node_count; /* valid node block count */ | |
434 | unsigned int total_valid_inode_count; /* valid inode count */ | |
435 | int active_logs; /* # of active logs */ | |
436 | ||
437 | block_t user_block_count; /* # of user blocks */ | |
438 | block_t total_valid_block_count; /* # of valid blocks */ | |
439 | block_t alloc_valid_block_count; /* # of allocated blocks */ | |
440 | block_t last_valid_block_count; /* for recovery */ | |
441 | u32 s_next_generation; /* for NFS support */ | |
442 | atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */ | |
443 | ||
444 | struct f2fs_mount_info mount_opt; /* mount options */ | |
445 | ||
446 | /* for cleaning operations */ | |
447 | struct mutex gc_mutex; /* mutex for GC */ | |
448 | struct f2fs_gc_kthread *gc_thread; /* GC thread */ | |
5ec4e49f | 449 | unsigned int cur_victim_sec; /* current victim section num */ |
39a53e0c JK |
450 | |
451 | /* | |
452 | * for stat information. | |
453 | * one is for the LFS mode, and the other is for the SSR mode. | |
454 | */ | |
35b09d82 | 455 | #ifdef CONFIG_F2FS_STAT_FS |
39a53e0c JK |
456 | struct f2fs_stat_info *stat_info; /* FS status information */ |
457 | unsigned int segment_count[2]; /* # of allocated segments */ | |
458 | unsigned int block_count[2]; /* # of allocated blocks */ | |
39a53e0c JK |
459 | int total_hit_ext, read_hit_ext; /* extent cache hit ratio */ |
460 | int bg_gc; /* background gc calls */ | |
35b09d82 NJ |
461 | unsigned int n_dirty_dirs; /* # of dir inodes */ |
462 | #endif | |
463 | unsigned int last_victim[2]; /* last victim segment # */ | |
39a53e0c | 464 | spinlock_t stat_lock; /* lock for stat operations */ |
b59d0bae NJ |
465 | |
466 | /* For sysfs suppport */ | |
467 | struct kobject s_kobj; | |
468 | struct completion s_kobj_unregister; | |
39a53e0c JK |
469 | }; |
470 | ||
471 | /* | |
472 | * Inline functions | |
473 | */ | |
474 | static inline struct f2fs_inode_info *F2FS_I(struct inode *inode) | |
475 | { | |
476 | return container_of(inode, struct f2fs_inode_info, vfs_inode); | |
477 | } | |
478 | ||
479 | static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb) | |
480 | { | |
481 | return sb->s_fs_info; | |
482 | } | |
483 | ||
484 | static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi) | |
485 | { | |
486 | return (struct f2fs_super_block *)(sbi->raw_super); | |
487 | } | |
488 | ||
489 | static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi) | |
490 | { | |
491 | return (struct f2fs_checkpoint *)(sbi->ckpt); | |
492 | } | |
493 | ||
45590710 GZ |
494 | static inline struct f2fs_node *F2FS_NODE(struct page *page) |
495 | { | |
496 | return (struct f2fs_node *)page_address(page); | |
497 | } | |
498 | ||
39a53e0c JK |
499 | static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi) |
500 | { | |
501 | return (struct f2fs_nm_info *)(sbi->nm_info); | |
502 | } | |
503 | ||
504 | static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi) | |
505 | { | |
506 | return (struct f2fs_sm_info *)(sbi->sm_info); | |
507 | } | |
508 | ||
509 | static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi) | |
510 | { | |
511 | return (struct sit_info *)(SM_I(sbi)->sit_info); | |
512 | } | |
513 | ||
514 | static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi) | |
515 | { | |
516 | return (struct free_segmap_info *)(SM_I(sbi)->free_info); | |
517 | } | |
518 | ||
519 | static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi) | |
520 | { | |
521 | return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info); | |
522 | } | |
523 | ||
524 | static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info *sbi) | |
525 | { | |
526 | sbi->s_dirty = 1; | |
527 | } | |
528 | ||
529 | static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info *sbi) | |
530 | { | |
531 | sbi->s_dirty = 0; | |
532 | } | |
533 | ||
d71b5564 JK |
534 | static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp) |
535 | { | |
536 | return le64_to_cpu(cp->checkpoint_ver); | |
537 | } | |
538 | ||
25ca923b JK |
539 | static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) |
540 | { | |
541 | unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); | |
542 | return ckpt_flags & f; | |
543 | } | |
544 | ||
545 | static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) | |
546 | { | |
547 | unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); | |
548 | ckpt_flags |= f; | |
549 | cp->ckpt_flags = cpu_to_le32(ckpt_flags); | |
550 | } | |
551 | ||
552 | static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) | |
553 | { | |
554 | unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); | |
555 | ckpt_flags &= (~f); | |
556 | cp->ckpt_flags = cpu_to_le32(ckpt_flags); | |
557 | } | |
558 | ||
e479556b | 559 | static inline void f2fs_lock_op(struct f2fs_sb_info *sbi) |
39936837 | 560 | { |
e479556b | 561 | down_read(&sbi->cp_rwsem); |
39936837 JK |
562 | } |
563 | ||
e479556b | 564 | static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi) |
39a53e0c | 565 | { |
e479556b | 566 | up_read(&sbi->cp_rwsem); |
39a53e0c JK |
567 | } |
568 | ||
e479556b | 569 | static inline void f2fs_lock_all(struct f2fs_sb_info *sbi) |
39a53e0c | 570 | { |
0daaad97 | 571 | f2fs_down_write(&sbi->cp_rwsem, &sbi->cp_mutex); |
39936837 JK |
572 | } |
573 | ||
e479556b | 574 | static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi) |
39936837 | 575 | { |
e479556b | 576 | up_write(&sbi->cp_rwsem); |
39a53e0c JK |
577 | } |
578 | ||
579 | /* | |
580 | * Check whether the given nid is within node id range. | |
581 | */ | |
064e0823 | 582 | static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid) |
39a53e0c | 583 | { |
064e0823 | 584 | WARN_ON((nid >= NM_I(sbi)->max_nid)); |
cfb271d4 | 585 | if (unlikely(nid >= NM_I(sbi)->max_nid)) |
064e0823 NJ |
586 | return -EINVAL; |
587 | return 0; | |
39a53e0c JK |
588 | } |
589 | ||
590 | #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1 | |
591 | ||
592 | /* | |
593 | * Check whether the inode has blocks or not | |
594 | */ | |
595 | static inline int F2FS_HAS_BLOCKS(struct inode *inode) | |
596 | { | |
597 | if (F2FS_I(inode)->i_xattr_nid) | |
598 | return (inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1); | |
599 | else | |
600 | return (inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS); | |
601 | } | |
602 | ||
603 | static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi, | |
604 | struct inode *inode, blkcnt_t count) | |
605 | { | |
606 | block_t valid_block_count; | |
607 | ||
608 | spin_lock(&sbi->stat_lock); | |
609 | valid_block_count = | |
610 | sbi->total_valid_block_count + (block_t)count; | |
cfb271d4 | 611 | if (unlikely(valid_block_count > sbi->user_block_count)) { |
39a53e0c JK |
612 | spin_unlock(&sbi->stat_lock); |
613 | return false; | |
614 | } | |
615 | inode->i_blocks += count; | |
616 | sbi->total_valid_block_count = valid_block_count; | |
617 | sbi->alloc_valid_block_count += (block_t)count; | |
618 | spin_unlock(&sbi->stat_lock); | |
619 | return true; | |
620 | } | |
621 | ||
da19b0dc | 622 | static inline void dec_valid_block_count(struct f2fs_sb_info *sbi, |
39a53e0c JK |
623 | struct inode *inode, |
624 | blkcnt_t count) | |
625 | { | |
626 | spin_lock(&sbi->stat_lock); | |
5d56b671 JK |
627 | f2fs_bug_on(sbi->total_valid_block_count < (block_t) count); |
628 | f2fs_bug_on(inode->i_blocks < count); | |
39a53e0c JK |
629 | inode->i_blocks -= count; |
630 | sbi->total_valid_block_count -= (block_t)count; | |
631 | spin_unlock(&sbi->stat_lock); | |
39a53e0c JK |
632 | } |
633 | ||
634 | static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type) | |
635 | { | |
636 | atomic_inc(&sbi->nr_pages[count_type]); | |
637 | F2FS_SET_SB_DIRT(sbi); | |
638 | } | |
639 | ||
640 | static inline void inode_inc_dirty_dents(struct inode *inode) | |
641 | { | |
642 | atomic_inc(&F2FS_I(inode)->dirty_dents); | |
643 | } | |
644 | ||
645 | static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type) | |
646 | { | |
647 | atomic_dec(&sbi->nr_pages[count_type]); | |
648 | } | |
649 | ||
650 | static inline void inode_dec_dirty_dents(struct inode *inode) | |
651 | { | |
652 | atomic_dec(&F2FS_I(inode)->dirty_dents); | |
653 | } | |
654 | ||
655 | static inline int get_pages(struct f2fs_sb_info *sbi, int count_type) | |
656 | { | |
657 | return atomic_read(&sbi->nr_pages[count_type]); | |
658 | } | |
659 | ||
5ac206cf NJ |
660 | static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type) |
661 | { | |
662 | unsigned int pages_per_sec = sbi->segs_per_sec * | |
663 | (1 << sbi->log_blocks_per_seg); | |
664 | return ((get_pages(sbi, block_type) + pages_per_sec - 1) | |
665 | >> sbi->log_blocks_per_seg) / sbi->segs_per_sec; | |
666 | } | |
667 | ||
39a53e0c JK |
668 | static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi) |
669 | { | |
670 | block_t ret; | |
671 | spin_lock(&sbi->stat_lock); | |
672 | ret = sbi->total_valid_block_count; | |
673 | spin_unlock(&sbi->stat_lock); | |
674 | return ret; | |
675 | } | |
676 | ||
677 | static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag) | |
678 | { | |
679 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
680 | ||
681 | /* return NAT or SIT bitmap */ | |
682 | if (flag == NAT_BITMAP) | |
683 | return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize); | |
684 | else if (flag == SIT_BITMAP) | |
685 | return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize); | |
686 | ||
687 | return 0; | |
688 | } | |
689 | ||
690 | static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag) | |
691 | { | |
692 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
25ca923b JK |
693 | int offset = (flag == NAT_BITMAP) ? |
694 | le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0; | |
39a53e0c JK |
695 | return &ckpt->sit_nat_version_bitmap + offset; |
696 | } | |
697 | ||
698 | static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi) | |
699 | { | |
700 | block_t start_addr; | |
701 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
d71b5564 | 702 | unsigned long long ckpt_version = cur_cp_version(ckpt); |
39a53e0c | 703 | |
25ca923b | 704 | start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr); |
39a53e0c JK |
705 | |
706 | /* | |
707 | * odd numbered checkpoint should at cp segment 0 | |
708 | * and even segent must be at cp segment 1 | |
709 | */ | |
710 | if (!(ckpt_version & 1)) | |
711 | start_addr += sbi->blocks_per_seg; | |
712 | ||
713 | return start_addr; | |
714 | } | |
715 | ||
716 | static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi) | |
717 | { | |
718 | return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum); | |
719 | } | |
720 | ||
721 | static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi, | |
ef86d709 | 722 | struct inode *inode) |
39a53e0c JK |
723 | { |
724 | block_t valid_block_count; | |
725 | unsigned int valid_node_count; | |
726 | ||
727 | spin_lock(&sbi->stat_lock); | |
728 | ||
ef86d709 | 729 | valid_block_count = sbi->total_valid_block_count + 1; |
cfb271d4 | 730 | if (unlikely(valid_block_count > sbi->user_block_count)) { |
39a53e0c JK |
731 | spin_unlock(&sbi->stat_lock); |
732 | return false; | |
733 | } | |
734 | ||
ef86d709 | 735 | valid_node_count = sbi->total_valid_node_count + 1; |
cfb271d4 | 736 | if (unlikely(valid_node_count > sbi->total_node_count)) { |
39a53e0c JK |
737 | spin_unlock(&sbi->stat_lock); |
738 | return false; | |
739 | } | |
740 | ||
741 | if (inode) | |
ef86d709 GZ |
742 | inode->i_blocks++; |
743 | ||
744 | sbi->alloc_valid_block_count++; | |
745 | sbi->total_valid_node_count++; | |
746 | sbi->total_valid_block_count++; | |
39a53e0c JK |
747 | spin_unlock(&sbi->stat_lock); |
748 | ||
749 | return true; | |
750 | } | |
751 | ||
752 | static inline void dec_valid_node_count(struct f2fs_sb_info *sbi, | |
ef86d709 | 753 | struct inode *inode) |
39a53e0c JK |
754 | { |
755 | spin_lock(&sbi->stat_lock); | |
756 | ||
ef86d709 GZ |
757 | f2fs_bug_on(!sbi->total_valid_block_count); |
758 | f2fs_bug_on(!sbi->total_valid_node_count); | |
759 | f2fs_bug_on(!inode->i_blocks); | |
39a53e0c | 760 | |
ef86d709 GZ |
761 | inode->i_blocks--; |
762 | sbi->total_valid_node_count--; | |
763 | sbi->total_valid_block_count--; | |
39a53e0c JK |
764 | |
765 | spin_unlock(&sbi->stat_lock); | |
766 | } | |
767 | ||
768 | static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi) | |
769 | { | |
770 | unsigned int ret; | |
771 | spin_lock(&sbi->stat_lock); | |
772 | ret = sbi->total_valid_node_count; | |
773 | spin_unlock(&sbi->stat_lock); | |
774 | return ret; | |
775 | } | |
776 | ||
777 | static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi) | |
778 | { | |
779 | spin_lock(&sbi->stat_lock); | |
5d56b671 | 780 | f2fs_bug_on(sbi->total_valid_inode_count == sbi->total_node_count); |
39a53e0c JK |
781 | sbi->total_valid_inode_count++; |
782 | spin_unlock(&sbi->stat_lock); | |
783 | } | |
784 | ||
0e80220a | 785 | static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi) |
39a53e0c JK |
786 | { |
787 | spin_lock(&sbi->stat_lock); | |
5d56b671 | 788 | f2fs_bug_on(!sbi->total_valid_inode_count); |
39a53e0c JK |
789 | sbi->total_valid_inode_count--; |
790 | spin_unlock(&sbi->stat_lock); | |
39a53e0c JK |
791 | } |
792 | ||
793 | static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi) | |
794 | { | |
795 | unsigned int ret; | |
796 | spin_lock(&sbi->stat_lock); | |
797 | ret = sbi->total_valid_inode_count; | |
798 | spin_unlock(&sbi->stat_lock); | |
799 | return ret; | |
800 | } | |
801 | ||
802 | static inline void f2fs_put_page(struct page *page, int unlock) | |
803 | { | |
031fa8cc | 804 | if (!page) |
39a53e0c JK |
805 | return; |
806 | ||
807 | if (unlock) { | |
5d56b671 | 808 | f2fs_bug_on(!PageLocked(page)); |
39a53e0c JK |
809 | unlock_page(page); |
810 | } | |
811 | page_cache_release(page); | |
812 | } | |
813 | ||
814 | static inline void f2fs_put_dnode(struct dnode_of_data *dn) | |
815 | { | |
816 | if (dn->node_page) | |
817 | f2fs_put_page(dn->node_page, 1); | |
818 | if (dn->inode_page && dn->node_page != dn->inode_page) | |
819 | f2fs_put_page(dn->inode_page, 0); | |
820 | dn->node_page = NULL; | |
821 | dn->inode_page = NULL; | |
822 | } | |
823 | ||
824 | static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name, | |
825 | size_t size, void (*ctor)(void *)) | |
826 | { | |
827 | return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, ctor); | |
828 | } | |
829 | ||
7bd59381 GZ |
830 | static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep, |
831 | gfp_t flags) | |
832 | { | |
833 | void *entry; | |
834 | retry: | |
835 | entry = kmem_cache_alloc(cachep, flags); | |
836 | if (!entry) { | |
837 | cond_resched(); | |
838 | goto retry; | |
839 | } | |
840 | ||
841 | return entry; | |
842 | } | |
843 | ||
39a53e0c JK |
844 | #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino) |
845 | ||
846 | static inline bool IS_INODE(struct page *page) | |
847 | { | |
45590710 | 848 | struct f2fs_node *p = F2FS_NODE(page); |
39a53e0c JK |
849 | return RAW_IS_INODE(p); |
850 | } | |
851 | ||
852 | static inline __le32 *blkaddr_in_node(struct f2fs_node *node) | |
853 | { | |
854 | return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr; | |
855 | } | |
856 | ||
857 | static inline block_t datablock_addr(struct page *node_page, | |
858 | unsigned int offset) | |
859 | { | |
860 | struct f2fs_node *raw_node; | |
861 | __le32 *addr_array; | |
45590710 | 862 | raw_node = F2FS_NODE(node_page); |
39a53e0c JK |
863 | addr_array = blkaddr_in_node(raw_node); |
864 | return le32_to_cpu(addr_array[offset]); | |
865 | } | |
866 | ||
867 | static inline int f2fs_test_bit(unsigned int nr, char *addr) | |
868 | { | |
869 | int mask; | |
870 | ||
871 | addr += (nr >> 3); | |
872 | mask = 1 << (7 - (nr & 0x07)); | |
873 | return mask & *addr; | |
874 | } | |
875 | ||
876 | static inline int f2fs_set_bit(unsigned int nr, char *addr) | |
877 | { | |
878 | int mask; | |
879 | int ret; | |
880 | ||
881 | addr += (nr >> 3); | |
882 | mask = 1 << (7 - (nr & 0x07)); | |
883 | ret = mask & *addr; | |
884 | *addr |= mask; | |
885 | return ret; | |
886 | } | |
887 | ||
888 | static inline int f2fs_clear_bit(unsigned int nr, char *addr) | |
889 | { | |
890 | int mask; | |
891 | int ret; | |
892 | ||
893 | addr += (nr >> 3); | |
894 | mask = 1 << (7 - (nr & 0x07)); | |
895 | ret = mask & *addr; | |
896 | *addr &= ~mask; | |
897 | return ret; | |
898 | } | |
899 | ||
900 | /* used for f2fs_inode_info->flags */ | |
901 | enum { | |
902 | FI_NEW_INODE, /* indicate newly allocated inode */ | |
b3783873 | 903 | FI_DIRTY_INODE, /* indicate inode is dirty or not */ |
39a53e0c JK |
904 | FI_INC_LINK, /* need to increment i_nlink */ |
905 | FI_ACL_MODE, /* indicate acl mode */ | |
906 | FI_NO_ALLOC, /* should not allocate any blocks */ | |
699489bb | 907 | FI_UPDATE_DIR, /* should update inode block for consistency */ |
74d0b917 | 908 | FI_DELAY_IPUT, /* used for the recovery */ |
c11abd1a | 909 | FI_NO_EXTENT, /* not to use the extent cache */ |
444c580f | 910 | FI_INLINE_XATTR, /* used for inline xattr */ |
1001b347 | 911 | FI_INLINE_DATA, /* used for inline data*/ |
39a53e0c JK |
912 | }; |
913 | ||
914 | static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag) | |
915 | { | |
916 | set_bit(flag, &fi->flags); | |
917 | } | |
918 | ||
919 | static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag) | |
920 | { | |
921 | return test_bit(flag, &fi->flags); | |
922 | } | |
923 | ||
924 | static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag) | |
925 | { | |
926 | clear_bit(flag, &fi->flags); | |
927 | } | |
928 | ||
929 | static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode) | |
930 | { | |
931 | fi->i_acl_mode = mode; | |
932 | set_inode_flag(fi, FI_ACL_MODE); | |
933 | } | |
934 | ||
935 | static inline int cond_clear_inode_flag(struct f2fs_inode_info *fi, int flag) | |
936 | { | |
937 | if (is_inode_flag_set(fi, FI_ACL_MODE)) { | |
938 | clear_inode_flag(fi, FI_ACL_MODE); | |
939 | return 1; | |
940 | } | |
941 | return 0; | |
942 | } | |
943 | ||
444c580f JK |
944 | static inline void get_inline_info(struct f2fs_inode_info *fi, |
945 | struct f2fs_inode *ri) | |
946 | { | |
947 | if (ri->i_inline & F2FS_INLINE_XATTR) | |
948 | set_inode_flag(fi, FI_INLINE_XATTR); | |
1001b347 HL |
949 | if (ri->i_inline & F2FS_INLINE_DATA) |
950 | set_inode_flag(fi, FI_INLINE_DATA); | |
444c580f JK |
951 | } |
952 | ||
953 | static inline void set_raw_inline(struct f2fs_inode_info *fi, | |
954 | struct f2fs_inode *ri) | |
955 | { | |
956 | ri->i_inline = 0; | |
957 | ||
958 | if (is_inode_flag_set(fi, FI_INLINE_XATTR)) | |
959 | ri->i_inline |= F2FS_INLINE_XATTR; | |
1001b347 HL |
960 | if (is_inode_flag_set(fi, FI_INLINE_DATA)) |
961 | ri->i_inline |= F2FS_INLINE_DATA; | |
444c580f JK |
962 | } |
963 | ||
de93653f JK |
964 | static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi) |
965 | { | |
966 | if (is_inode_flag_set(fi, FI_INLINE_XATTR)) | |
967 | return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS; | |
968 | return DEF_ADDRS_PER_INODE; | |
969 | } | |
970 | ||
65985d93 JK |
971 | static inline void *inline_xattr_addr(struct page *page) |
972 | { | |
973 | struct f2fs_inode *ri; | |
974 | ri = (struct f2fs_inode *)page_address(page); | |
975 | return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE - | |
976 | F2FS_INLINE_XATTR_ADDRS]); | |
977 | } | |
978 | ||
979 | static inline int inline_xattr_size(struct inode *inode) | |
980 | { | |
981 | if (is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR)) | |
982 | return F2FS_INLINE_XATTR_ADDRS << 2; | |
983 | else | |
984 | return 0; | |
985 | } | |
986 | ||
1001b347 HL |
987 | static inline void *inline_data_addr(struct page *page) |
988 | { | |
989 | struct f2fs_inode *ri; | |
990 | ri = (struct f2fs_inode *)page_address(page); | |
991 | return (void *)&(ri->i_addr[1]); | |
992 | } | |
993 | ||
77888c1e JK |
994 | static inline int f2fs_readonly(struct super_block *sb) |
995 | { | |
996 | return sb->s_flags & MS_RDONLY; | |
997 | } | |
998 | ||
39a53e0c JK |
999 | /* |
1000 | * file.c | |
1001 | */ | |
1002 | int f2fs_sync_file(struct file *, loff_t, loff_t, int); | |
1003 | void truncate_data_blocks(struct dnode_of_data *); | |
1004 | void f2fs_truncate(struct inode *); | |
2d4d9fb5 | 1005 | int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *); |
39a53e0c JK |
1006 | int f2fs_setattr(struct dentry *, struct iattr *); |
1007 | int truncate_hole(struct inode *, pgoff_t, pgoff_t); | |
b292dcab | 1008 | int truncate_data_blocks_range(struct dnode_of_data *, int); |
39a53e0c | 1009 | long f2fs_ioctl(struct file *, unsigned int, unsigned long); |
e9750824 | 1010 | long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long); |
39a53e0c JK |
1011 | |
1012 | /* | |
1013 | * inode.c | |
1014 | */ | |
1015 | void f2fs_set_inode_flags(struct inode *); | |
39a53e0c | 1016 | struct inode *f2fs_iget(struct super_block *, unsigned long); |
4660f9c0 | 1017 | int try_to_free_nats(struct f2fs_sb_info *, int); |
39a53e0c | 1018 | void update_inode(struct inode *, struct page *); |
39936837 | 1019 | int update_inode_page(struct inode *); |
39a53e0c JK |
1020 | int f2fs_write_inode(struct inode *, struct writeback_control *); |
1021 | void f2fs_evict_inode(struct inode *); | |
1022 | ||
1023 | /* | |
1024 | * namei.c | |
1025 | */ | |
1026 | struct dentry *f2fs_get_parent(struct dentry *child); | |
1027 | ||
1028 | /* | |
1029 | * dir.c | |
1030 | */ | |
1031 | struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *, | |
1032 | struct page **); | |
1033 | struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **); | |
1034 | ino_t f2fs_inode_by_name(struct inode *, struct qstr *); | |
1035 | void f2fs_set_link(struct inode *, struct f2fs_dir_entry *, | |
1036 | struct page *, struct inode *); | |
1cd14caf | 1037 | int update_dent_inode(struct inode *, const struct qstr *); |
b7f7a5e0 | 1038 | int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *); |
39a53e0c JK |
1039 | void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *); |
1040 | int f2fs_make_empty(struct inode *, struct inode *); | |
1041 | bool f2fs_empty_dir(struct inode *); | |
1042 | ||
b7f7a5e0 AV |
1043 | static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode) |
1044 | { | |
1045 | return __f2fs_add_link(dentry->d_parent->d_inode, &dentry->d_name, | |
1046 | inode); | |
1047 | } | |
1048 | ||
39a53e0c JK |
1049 | /* |
1050 | * super.c | |
1051 | */ | |
1052 | int f2fs_sync_fs(struct super_block *, int); | |
a07ef784 NJ |
1053 | extern __printf(3, 4) |
1054 | void f2fs_msg(struct super_block *, const char *, const char *, ...); | |
39a53e0c JK |
1055 | |
1056 | /* | |
1057 | * hash.c | |
1058 | */ | |
9836b8b9 | 1059 | f2fs_hash_t f2fs_dentry_hash(const char *, size_t); |
39a53e0c JK |
1060 | |
1061 | /* | |
1062 | * node.c | |
1063 | */ | |
1064 | struct dnode_of_data; | |
1065 | struct node_info; | |
1066 | ||
1067 | int is_checkpointed_node(struct f2fs_sb_info *, nid_t); | |
1068 | void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *); | |
1069 | int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int); | |
1070 | int truncate_inode_blocks(struct inode *, pgoff_t); | |
4f16fb0f | 1071 | int truncate_xattr_node(struct inode *, struct page *); |
cfe58f9d | 1072 | int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t); |
58e674d6 | 1073 | void remove_inode_page(struct inode *); |
44a83ff6 | 1074 | struct page *new_inode_page(struct inode *, const struct qstr *); |
8ae8f162 | 1075 | struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *); |
39a53e0c JK |
1076 | void ra_node_page(struct f2fs_sb_info *, nid_t); |
1077 | struct page *get_node_page(struct f2fs_sb_info *, pgoff_t); | |
1078 | struct page *get_node_page_ra(struct page *, int); | |
1079 | void sync_inode_page(struct dnode_of_data *); | |
1080 | int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *); | |
1081 | bool alloc_nid(struct f2fs_sb_info *, nid_t *); | |
1082 | void alloc_nid_done(struct f2fs_sb_info *, nid_t); | |
1083 | void alloc_nid_failed(struct f2fs_sb_info *, nid_t); | |
1084 | void recover_node_page(struct f2fs_sb_info *, struct page *, | |
1085 | struct f2fs_summary *, struct node_info *, block_t); | |
1086 | int recover_inode_page(struct f2fs_sb_info *, struct page *); | |
1087 | int restore_node_summary(struct f2fs_sb_info *, unsigned int, | |
1088 | struct f2fs_summary_block *); | |
1089 | void flush_nat_entries(struct f2fs_sb_info *); | |
1090 | int build_node_manager(struct f2fs_sb_info *); | |
1091 | void destroy_node_manager(struct f2fs_sb_info *); | |
6e6093a8 | 1092 | int __init create_node_manager_caches(void); |
39a53e0c JK |
1093 | void destroy_node_manager_caches(void); |
1094 | ||
1095 | /* | |
1096 | * segment.c | |
1097 | */ | |
1098 | void f2fs_balance_fs(struct f2fs_sb_info *); | |
4660f9c0 | 1099 | void f2fs_balance_fs_bg(struct f2fs_sb_info *); |
39a53e0c | 1100 | void invalidate_blocks(struct f2fs_sb_info *, block_t); |
39a53e0c JK |
1101 | void clear_prefree_segments(struct f2fs_sb_info *); |
1102 | int npages_for_summary_flush(struct f2fs_sb_info *); | |
1103 | void allocate_new_segments(struct f2fs_sb_info *); | |
1104 | struct page *get_sum_page(struct f2fs_sb_info *, unsigned int); | |
577e3495 | 1105 | void write_meta_page(struct f2fs_sb_info *, struct page *); |
39a53e0c JK |
1106 | void write_node_page(struct f2fs_sb_info *, struct page *, unsigned int, |
1107 | block_t, block_t *); | |
458e6197 JK |
1108 | void write_data_page(struct page *, struct dnode_of_data *, block_t *, |
1109 | struct f2fs_io_info *); | |
1110 | void rewrite_data_page(struct page *, block_t, struct f2fs_io_info *); | |
39a53e0c JK |
1111 | void recover_data_page(struct f2fs_sb_info *, struct page *, |
1112 | struct f2fs_summary *, block_t, block_t); | |
1113 | void rewrite_node_page(struct f2fs_sb_info *, struct page *, | |
1114 | struct f2fs_summary *, block_t, block_t); | |
93dfe2ac | 1115 | void f2fs_wait_on_page_writeback(struct page *, enum page_type, bool); |
39a53e0c JK |
1116 | void write_data_summaries(struct f2fs_sb_info *, block_t); |
1117 | void write_node_summaries(struct f2fs_sb_info *, block_t); | |
1118 | int lookup_journal_in_cursum(struct f2fs_summary_block *, | |
1119 | int, unsigned int, int); | |
1120 | void flush_sit_entries(struct f2fs_sb_info *); | |
1121 | int build_segment_manager(struct f2fs_sb_info *); | |
39a53e0c | 1122 | void destroy_segment_manager(struct f2fs_sb_info *); |
7fd9e544 JK |
1123 | int __init create_segment_manager_caches(void); |
1124 | void destroy_segment_manager_caches(void); | |
39a53e0c JK |
1125 | |
1126 | /* | |
1127 | * checkpoint.c | |
1128 | */ | |
1129 | struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t); | |
1130 | struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t); | |
1131 | long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long); | |
cbd56e7d JK |
1132 | int acquire_orphan_inode(struct f2fs_sb_info *); |
1133 | void release_orphan_inode(struct f2fs_sb_info *); | |
39a53e0c JK |
1134 | void add_orphan_inode(struct f2fs_sb_info *, nid_t); |
1135 | void remove_orphan_inode(struct f2fs_sb_info *, nid_t); | |
8f99a946 | 1136 | void recover_orphan_inodes(struct f2fs_sb_info *); |
39a53e0c JK |
1137 | int get_valid_checkpoint(struct f2fs_sb_info *); |
1138 | void set_dirty_dir_page(struct inode *, struct page *); | |
5deb8267 | 1139 | void add_dirty_dir_inode(struct inode *); |
39a53e0c | 1140 | void remove_dirty_dir_inode(struct inode *); |
74d0b917 | 1141 | struct inode *check_dirty_dir_inode(struct f2fs_sb_info *, nid_t); |
39a53e0c | 1142 | void sync_dirty_dir_inodes(struct f2fs_sb_info *); |
43727527 | 1143 | void write_checkpoint(struct f2fs_sb_info *, bool); |
39a53e0c | 1144 | void init_orphan_info(struct f2fs_sb_info *); |
6e6093a8 | 1145 | int __init create_checkpoint_caches(void); |
39a53e0c JK |
1146 | void destroy_checkpoint_caches(void); |
1147 | ||
1148 | /* | |
1149 | * data.c | |
1150 | */ | |
458e6197 | 1151 | void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int); |
93dfe2ac JK |
1152 | int f2fs_submit_page_bio(struct f2fs_sb_info *, struct page *, block_t, int); |
1153 | void f2fs_submit_page_mbio(struct f2fs_sb_info *, struct page *, block_t, | |
458e6197 | 1154 | struct f2fs_io_info *); |
39a53e0c | 1155 | int reserve_new_block(struct dnode_of_data *); |
b600965c | 1156 | int f2fs_reserve_block(struct dnode_of_data *, pgoff_t); |
39a53e0c | 1157 | void update_extent_cache(block_t, struct dnode_of_data *); |
c718379b | 1158 | struct page *find_data_page(struct inode *, pgoff_t, bool); |
39a53e0c | 1159 | struct page *get_lock_data_page(struct inode *, pgoff_t); |
64aa7ed9 | 1160 | struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool); |
458e6197 | 1161 | int do_write_data_page(struct page *, struct f2fs_io_info *); |
39a53e0c JK |
1162 | |
1163 | /* | |
1164 | * gc.c | |
1165 | */ | |
1166 | int start_gc_thread(struct f2fs_sb_info *); | |
1167 | void stop_gc_thread(struct f2fs_sb_info *); | |
de93653f | 1168 | block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *); |
408e9375 | 1169 | int f2fs_gc(struct f2fs_sb_info *); |
39a53e0c | 1170 | void build_gc_manager(struct f2fs_sb_info *); |
6e6093a8 | 1171 | int __init create_gc_caches(void); |
39a53e0c JK |
1172 | void destroy_gc_caches(void); |
1173 | ||
1174 | /* | |
1175 | * recovery.c | |
1176 | */ | |
6ead1142 | 1177 | int recover_fsync_data(struct f2fs_sb_info *); |
39a53e0c JK |
1178 | bool space_for_roll_forward(struct f2fs_sb_info *); |
1179 | ||
1180 | /* | |
1181 | * debug.c | |
1182 | */ | |
1183 | #ifdef CONFIG_F2FS_STAT_FS | |
1184 | struct f2fs_stat_info { | |
1185 | struct list_head stat_list; | |
1186 | struct f2fs_sb_info *sbi; | |
1187 | struct mutex stat_lock; | |
1188 | int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs; | |
1189 | int main_area_segs, main_area_sections, main_area_zones; | |
1190 | int hit_ext, total_ext; | |
1191 | int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta; | |
1192 | int nats, sits, fnids; | |
1193 | int total_count, utilization; | |
1194 | int bg_gc; | |
1195 | unsigned int valid_count, valid_node_count, valid_inode_count; | |
1196 | unsigned int bimodal, avg_vblocks; | |
1197 | int util_free, util_valid, util_invalid; | |
1198 | int rsvd_segs, overp_segs; | |
1199 | int dirty_count, node_pages, meta_pages; | |
1200 | int prefree_count, call_count; | |
1201 | int tot_segs, node_segs, data_segs, free_segs, free_secs; | |
1202 | int tot_blks, data_blks, node_blks; | |
1203 | int curseg[NR_CURSEG_TYPE]; | |
1204 | int cursec[NR_CURSEG_TYPE]; | |
1205 | int curzone[NR_CURSEG_TYPE]; | |
1206 | ||
1207 | unsigned int segment_count[2]; | |
1208 | unsigned int block_count[2]; | |
1209 | unsigned base_mem, cache_mem; | |
1210 | }; | |
1211 | ||
963d4f7d GZ |
1212 | static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi) |
1213 | { | |
1214 | return (struct f2fs_stat_info*)sbi->stat_info; | |
1215 | } | |
1216 | ||
dcdfff65 JK |
1217 | #define stat_inc_call_count(si) ((si)->call_count++) |
1218 | #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++) | |
1219 | #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++) | |
1220 | #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--) | |
1221 | #define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++) | |
1222 | #define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++) | |
1223 | #define stat_inc_seg_type(sbi, curseg) \ | |
1224 | ((sbi)->segment_count[(curseg)->alloc_type]++) | |
1225 | #define stat_inc_block_count(sbi, curseg) \ | |
1226 | ((sbi)->block_count[(curseg)->alloc_type]++) | |
39a53e0c JK |
1227 | |
1228 | #define stat_inc_seg_count(sbi, type) \ | |
1229 | do { \ | |
963d4f7d | 1230 | struct f2fs_stat_info *si = F2FS_STAT(sbi); \ |
39a53e0c JK |
1231 | (si)->tot_segs++; \ |
1232 | if (type == SUM_TYPE_DATA) \ | |
1233 | si->data_segs++; \ | |
1234 | else \ | |
1235 | si->node_segs++; \ | |
1236 | } while (0) | |
1237 | ||
1238 | #define stat_inc_tot_blk_count(si, blks) \ | |
1239 | (si->tot_blks += (blks)) | |
1240 | ||
1241 | #define stat_inc_data_blk_count(sbi, blks) \ | |
1242 | do { \ | |
963d4f7d | 1243 | struct f2fs_stat_info *si = F2FS_STAT(sbi); \ |
39a53e0c JK |
1244 | stat_inc_tot_blk_count(si, blks); \ |
1245 | si->data_blks += (blks); \ | |
1246 | } while (0) | |
1247 | ||
1248 | #define stat_inc_node_blk_count(sbi, blks) \ | |
1249 | do { \ | |
963d4f7d | 1250 | struct f2fs_stat_info *si = F2FS_STAT(sbi); \ |
39a53e0c JK |
1251 | stat_inc_tot_blk_count(si, blks); \ |
1252 | si->node_blks += (blks); \ | |
1253 | } while (0) | |
1254 | ||
1255 | int f2fs_build_stats(struct f2fs_sb_info *); | |
1256 | void f2fs_destroy_stats(struct f2fs_sb_info *); | |
6e6093a8 | 1257 | void __init f2fs_create_root_stats(void); |
4589d25d | 1258 | void f2fs_destroy_root_stats(void); |
39a53e0c JK |
1259 | #else |
1260 | #define stat_inc_call_count(si) | |
dcdfff65 JK |
1261 | #define stat_inc_bggc_count(si) |
1262 | #define stat_inc_dirty_dir(sbi) | |
1263 | #define stat_dec_dirty_dir(sbi) | |
1264 | #define stat_inc_total_hit(sb) | |
1265 | #define stat_inc_read_hit(sb) | |
1266 | #define stat_inc_seg_type(sbi, curseg) | |
1267 | #define stat_inc_block_count(sbi, curseg) | |
39a53e0c JK |
1268 | #define stat_inc_seg_count(si, type) |
1269 | #define stat_inc_tot_blk_count(si, blks) | |
1270 | #define stat_inc_data_blk_count(si, blks) | |
1271 | #define stat_inc_node_blk_count(sbi, blks) | |
1272 | ||
1273 | static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; } | |
1274 | static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { } | |
6e6093a8 | 1275 | static inline void __init f2fs_create_root_stats(void) { } |
4589d25d | 1276 | static inline void f2fs_destroy_root_stats(void) { } |
39a53e0c JK |
1277 | #endif |
1278 | ||
1279 | extern const struct file_operations f2fs_dir_operations; | |
1280 | extern const struct file_operations f2fs_file_operations; | |
1281 | extern const struct inode_operations f2fs_file_inode_operations; | |
1282 | extern const struct address_space_operations f2fs_dblock_aops; | |
1283 | extern const struct address_space_operations f2fs_node_aops; | |
1284 | extern const struct address_space_operations f2fs_meta_aops; | |
1285 | extern const struct inode_operations f2fs_dir_inode_operations; | |
1286 | extern const struct inode_operations f2fs_symlink_inode_operations; | |
1287 | extern const struct inode_operations f2fs_special_inode_operations; | |
1001b347 | 1288 | |
39a53e0c | 1289 | #endif |