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39a53e0c JK |
1 | /** |
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> | |
20 | ||
21 | /* | |
22 | * For mount options | |
23 | */ | |
24 | #define F2FS_MOUNT_BG_GC 0x00000001 | |
25 | #define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002 | |
26 | #define F2FS_MOUNT_DISCARD 0x00000004 | |
27 | #define F2FS_MOUNT_NOHEAP 0x00000008 | |
28 | #define F2FS_MOUNT_XATTR_USER 0x00000010 | |
29 | #define F2FS_MOUNT_POSIX_ACL 0x00000020 | |
30 | #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040 | |
31 | ||
32 | #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option) | |
33 | #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option) | |
34 | #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option) | |
35 | ||
36 | #define ver_after(a, b) (typecheck(unsigned long long, a) && \ | |
37 | typecheck(unsigned long long, b) && \ | |
38 | ((long long)((a) - (b)) > 0)) | |
39 | ||
40 | typedef u64 block_t; | |
41 | typedef u32 nid_t; | |
42 | ||
43 | struct f2fs_mount_info { | |
44 | unsigned int opt; | |
45 | }; | |
46 | ||
47 | static inline __u32 f2fs_crc32(void *buff, size_t len) | |
48 | { | |
49 | return crc32_le(F2FS_SUPER_MAGIC, buff, len); | |
50 | } | |
51 | ||
52 | static inline bool f2fs_crc_valid(__u32 blk_crc, void *buff, size_t buff_size) | |
53 | { | |
54 | return f2fs_crc32(buff, buff_size) == blk_crc; | |
55 | } | |
56 | ||
57 | /* | |
58 | * For checkpoint manager | |
59 | */ | |
60 | enum { | |
61 | NAT_BITMAP, | |
62 | SIT_BITMAP | |
63 | }; | |
64 | ||
65 | /* for the list of orphan inodes */ | |
66 | struct orphan_inode_entry { | |
67 | struct list_head list; /* list head */ | |
68 | nid_t ino; /* inode number */ | |
69 | }; | |
70 | ||
71 | /* for the list of directory inodes */ | |
72 | struct dir_inode_entry { | |
73 | struct list_head list; /* list head */ | |
74 | struct inode *inode; /* vfs inode pointer */ | |
75 | }; | |
76 | ||
77 | /* for the list of fsync inodes, used only during recovery */ | |
78 | struct fsync_inode_entry { | |
79 | struct list_head list; /* list head */ | |
80 | struct inode *inode; /* vfs inode pointer */ | |
81 | block_t blkaddr; /* block address locating the last inode */ | |
82 | }; | |
83 | ||
84 | #define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats)) | |
85 | #define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits)) | |
86 | ||
87 | #define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne) | |
88 | #define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid) | |
89 | #define sit_in_journal(sum, i) (sum->sit_j.entries[i].se) | |
90 | #define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno) | |
91 | ||
92 | static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i) | |
93 | { | |
94 | int before = nats_in_cursum(rs); | |
95 | rs->n_nats = cpu_to_le16(before + i); | |
96 | return before; | |
97 | } | |
98 | ||
99 | static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i) | |
100 | { | |
101 | int before = sits_in_cursum(rs); | |
102 | rs->n_sits = cpu_to_le16(before + i); | |
103 | return before; | |
104 | } | |
105 | ||
106 | /* | |
107 | * For INODE and NODE manager | |
108 | */ | |
109 | #define XATTR_NODE_OFFSET (-1) /* | |
110 | * store xattrs to one node block per | |
111 | * file keeping -1 as its node offset to | |
112 | * distinguish from index node blocks. | |
113 | */ | |
114 | #define RDONLY_NODE 1 /* | |
115 | * specify a read-only mode when getting | |
116 | * a node block. 0 is read-write mode. | |
117 | * used by get_dnode_of_data(). | |
118 | */ | |
119 | #define F2FS_LINK_MAX 32000 /* maximum link count per file */ | |
120 | ||
121 | /* for in-memory extent cache entry */ | |
122 | struct extent_info { | |
123 | rwlock_t ext_lock; /* rwlock for consistency */ | |
124 | unsigned int fofs; /* start offset in a file */ | |
125 | u32 blk_addr; /* start block address of the extent */ | |
126 | unsigned int len; /* lenth of the extent */ | |
127 | }; | |
128 | ||
129 | /* | |
130 | * i_advise uses FADVISE_XXX_BIT. We can add additional hints later. | |
131 | */ | |
132 | #define FADVISE_COLD_BIT 0x01 | |
133 | ||
134 | struct f2fs_inode_info { | |
135 | struct inode vfs_inode; /* serve a vfs inode */ | |
136 | unsigned long i_flags; /* keep an inode flags for ioctl */ | |
137 | unsigned char i_advise; /* use to give file attribute hints */ | |
138 | unsigned int i_current_depth; /* use only in directory structure */ | |
139 | umode_t i_acl_mode; /* keep file acl mode temporarily */ | |
140 | ||
141 | /* Use below internally in f2fs*/ | |
142 | unsigned long flags; /* use to pass per-file flags */ | |
143 | unsigned long long data_version;/* lastes version of data for fsync */ | |
144 | atomic_t dirty_dents; /* # of dirty dentry pages */ | |
145 | f2fs_hash_t chash; /* hash value of given file name */ | |
146 | unsigned int clevel; /* maximum level of given file name */ | |
147 | nid_t i_xattr_nid; /* node id that contains xattrs */ | |
148 | struct extent_info ext; /* in-memory extent cache entry */ | |
149 | }; | |
150 | ||
151 | static inline void get_extent_info(struct extent_info *ext, | |
152 | struct f2fs_extent i_ext) | |
153 | { | |
154 | write_lock(&ext->ext_lock); | |
155 | ext->fofs = le32_to_cpu(i_ext.fofs); | |
156 | ext->blk_addr = le32_to_cpu(i_ext.blk_addr); | |
157 | ext->len = le32_to_cpu(i_ext.len); | |
158 | write_unlock(&ext->ext_lock); | |
159 | } | |
160 | ||
161 | static inline void set_raw_extent(struct extent_info *ext, | |
162 | struct f2fs_extent *i_ext) | |
163 | { | |
164 | read_lock(&ext->ext_lock); | |
165 | i_ext->fofs = cpu_to_le32(ext->fofs); | |
166 | i_ext->blk_addr = cpu_to_le32(ext->blk_addr); | |
167 | i_ext->len = cpu_to_le32(ext->len); | |
168 | read_unlock(&ext->ext_lock); | |
169 | } | |
170 | ||
171 | struct f2fs_nm_info { | |
172 | block_t nat_blkaddr; /* base disk address of NAT */ | |
173 | nid_t max_nid; /* maximum possible node ids */ | |
174 | nid_t init_scan_nid; /* the first nid to be scanned */ | |
175 | nid_t next_scan_nid; /* the next nid to be scanned */ | |
176 | ||
177 | /* NAT cache management */ | |
178 | struct radix_tree_root nat_root;/* root of the nat entry cache */ | |
179 | rwlock_t nat_tree_lock; /* protect nat_tree_lock */ | |
180 | unsigned int nat_cnt; /* the # of cached nat entries */ | |
181 | struct list_head nat_entries; /* cached nat entry list (clean) */ | |
182 | struct list_head dirty_nat_entries; /* cached nat entry list (dirty) */ | |
183 | ||
184 | /* free node ids management */ | |
185 | struct list_head free_nid_list; /* a list for free nids */ | |
186 | spinlock_t free_nid_list_lock; /* protect free nid list */ | |
187 | unsigned int fcnt; /* the number of free node id */ | |
188 | struct mutex build_lock; /* lock for build free nids */ | |
189 | ||
190 | /* for checkpoint */ | |
191 | char *nat_bitmap; /* NAT bitmap pointer */ | |
192 | int bitmap_size; /* bitmap size */ | |
193 | }; | |
194 | ||
195 | /* | |
196 | * this structure is used as one of function parameters. | |
197 | * all the information are dedicated to a given direct node block determined | |
198 | * by the data offset in a file. | |
199 | */ | |
200 | struct dnode_of_data { | |
201 | struct inode *inode; /* vfs inode pointer */ | |
202 | struct page *inode_page; /* its inode page, NULL is possible */ | |
203 | struct page *node_page; /* cached direct node page */ | |
204 | nid_t nid; /* node id of the direct node block */ | |
205 | unsigned int ofs_in_node; /* data offset in the node page */ | |
206 | bool inode_page_locked; /* inode page is locked or not */ | |
207 | block_t data_blkaddr; /* block address of the node block */ | |
208 | }; | |
209 | ||
210 | static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode, | |
211 | struct page *ipage, struct page *npage, nid_t nid) | |
212 | { | |
213 | dn->inode = inode; | |
214 | dn->inode_page = ipage; | |
215 | dn->node_page = npage; | |
216 | dn->nid = nid; | |
217 | dn->inode_page_locked = 0; | |
218 | } | |
219 | ||
220 | /* | |
221 | * For SIT manager | |
222 | * | |
223 | * By default, there are 6 active log areas across the whole main area. | |
224 | * When considering hot and cold data separation to reduce cleaning overhead, | |
225 | * we split 3 for data logs and 3 for node logs as hot, warm, and cold types, | |
226 | * respectively. | |
227 | * In the current design, you should not change the numbers intentionally. | |
228 | * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6 | |
229 | * logs individually according to the underlying devices. (default: 6) | |
230 | * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for | |
231 | * data and 8 for node logs. | |
232 | */ | |
233 | #define NR_CURSEG_DATA_TYPE (3) | |
234 | #define NR_CURSEG_NODE_TYPE (3) | |
235 | #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE) | |
236 | ||
237 | enum { | |
238 | CURSEG_HOT_DATA = 0, /* directory entry blocks */ | |
239 | CURSEG_WARM_DATA, /* data blocks */ | |
240 | CURSEG_COLD_DATA, /* multimedia or GCed data blocks */ | |
241 | CURSEG_HOT_NODE, /* direct node blocks of directory files */ | |
242 | CURSEG_WARM_NODE, /* direct node blocks of normal files */ | |
243 | CURSEG_COLD_NODE, /* indirect node blocks */ | |
244 | NO_CHECK_TYPE | |
245 | }; | |
246 | ||
247 | struct f2fs_sm_info { | |
248 | struct sit_info *sit_info; /* whole segment information */ | |
249 | struct free_segmap_info *free_info; /* free segment information */ | |
250 | struct dirty_seglist_info *dirty_info; /* dirty segment information */ | |
251 | struct curseg_info *curseg_array; /* active segment information */ | |
252 | ||
253 | struct list_head wblist_head; /* list of under-writeback pages */ | |
254 | spinlock_t wblist_lock; /* lock for checkpoint */ | |
255 | ||
256 | block_t seg0_blkaddr; /* block address of 0'th segment */ | |
257 | block_t main_blkaddr; /* start block address of main area */ | |
258 | block_t ssa_blkaddr; /* start block address of SSA area */ | |
259 | ||
260 | unsigned int segment_count; /* total # of segments */ | |
261 | unsigned int main_segments; /* # of segments in main area */ | |
262 | unsigned int reserved_segments; /* # of reserved segments */ | |
263 | unsigned int ovp_segments; /* # of overprovision segments */ | |
264 | }; | |
265 | ||
266 | /* | |
267 | * For directory operation | |
268 | */ | |
269 | #define NODE_DIR1_BLOCK (ADDRS_PER_INODE + 1) | |
270 | #define NODE_DIR2_BLOCK (ADDRS_PER_INODE + 2) | |
271 | #define NODE_IND1_BLOCK (ADDRS_PER_INODE + 3) | |
272 | #define NODE_IND2_BLOCK (ADDRS_PER_INODE + 4) | |
273 | #define NODE_DIND_BLOCK (ADDRS_PER_INODE + 5) | |
274 | ||
275 | /* | |
276 | * For superblock | |
277 | */ | |
278 | /* | |
279 | * COUNT_TYPE for monitoring | |
280 | * | |
281 | * f2fs monitors the number of several block types such as on-writeback, | |
282 | * dirty dentry blocks, dirty node blocks, and dirty meta blocks. | |
283 | */ | |
284 | enum count_type { | |
285 | F2FS_WRITEBACK, | |
286 | F2FS_DIRTY_DENTS, | |
287 | F2FS_DIRTY_NODES, | |
288 | F2FS_DIRTY_META, | |
289 | NR_COUNT_TYPE, | |
290 | }; | |
291 | ||
292 | /* | |
293 | * FS_LOCK nesting subclasses for the lock validator: | |
294 | * | |
295 | * The locking order between these classes is | |
296 | * RENAME -> DENTRY_OPS -> DATA_WRITE -> DATA_NEW | |
297 | * -> DATA_TRUNC -> NODE_WRITE -> NODE_NEW -> NODE_TRUNC | |
298 | */ | |
299 | enum lock_type { | |
300 | RENAME, /* for renaming operations */ | |
301 | DENTRY_OPS, /* for directory operations */ | |
302 | DATA_WRITE, /* for data write */ | |
303 | DATA_NEW, /* for data allocation */ | |
304 | DATA_TRUNC, /* for data truncate */ | |
305 | NODE_NEW, /* for node allocation */ | |
306 | NODE_TRUNC, /* for node truncate */ | |
307 | NODE_WRITE, /* for node write */ | |
308 | NR_LOCK_TYPE, | |
309 | }; | |
310 | ||
311 | /* | |
312 | * The below are the page types of bios used in submti_bio(). | |
313 | * The available types are: | |
314 | * DATA User data pages. It operates as async mode. | |
315 | * NODE Node pages. It operates as async mode. | |
316 | * META FS metadata pages such as SIT, NAT, CP. | |
317 | * NR_PAGE_TYPE The number of page types. | |
318 | * META_FLUSH Make sure the previous pages are written | |
319 | * with waiting the bio's completion | |
320 | * ... Only can be used with META. | |
321 | */ | |
322 | enum page_type { | |
323 | DATA, | |
324 | NODE, | |
325 | META, | |
326 | NR_PAGE_TYPE, | |
327 | META_FLUSH, | |
328 | }; | |
329 | ||
330 | struct f2fs_sb_info { | |
331 | struct super_block *sb; /* pointer to VFS super block */ | |
332 | struct buffer_head *raw_super_buf; /* buffer head of raw sb */ | |
333 | struct f2fs_super_block *raw_super; /* raw super block pointer */ | |
334 | int s_dirty; /* dirty flag for checkpoint */ | |
335 | ||
336 | /* for node-related operations */ | |
337 | struct f2fs_nm_info *nm_info; /* node manager */ | |
338 | struct inode *node_inode; /* cache node blocks */ | |
339 | ||
340 | /* for segment-related operations */ | |
341 | struct f2fs_sm_info *sm_info; /* segment manager */ | |
342 | struct bio *bio[NR_PAGE_TYPE]; /* bios to merge */ | |
343 | sector_t last_block_in_bio[NR_PAGE_TYPE]; /* last block number */ | |
344 | struct rw_semaphore bio_sem; /* IO semaphore */ | |
345 | ||
346 | /* for checkpoint */ | |
347 | struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */ | |
348 | struct inode *meta_inode; /* cache meta blocks */ | |
349 | struct mutex cp_mutex; /* for checkpoint procedure */ | |
350 | struct mutex fs_lock[NR_LOCK_TYPE]; /* for blocking FS operations */ | |
351 | struct mutex write_inode; /* mutex for write inode */ | |
352 | struct mutex writepages; /* mutex for writepages() */ | |
353 | int por_doing; /* recovery is doing or not */ | |
354 | ||
355 | /* for orphan inode management */ | |
356 | struct list_head orphan_inode_list; /* orphan inode list */ | |
357 | struct mutex orphan_inode_mutex; /* for orphan inode list */ | |
358 | unsigned int n_orphans; /* # of orphan inodes */ | |
359 | ||
360 | /* for directory inode management */ | |
361 | struct list_head dir_inode_list; /* dir inode list */ | |
362 | spinlock_t dir_inode_lock; /* for dir inode list lock */ | |
363 | unsigned int n_dirty_dirs; /* # of dir inodes */ | |
364 | ||
365 | /* basic file system units */ | |
366 | unsigned int log_sectors_per_block; /* log2 sectors per block */ | |
367 | unsigned int log_blocksize; /* log2 block size */ | |
368 | unsigned int blocksize; /* block size */ | |
369 | unsigned int root_ino_num; /* root inode number*/ | |
370 | unsigned int node_ino_num; /* node inode number*/ | |
371 | unsigned int meta_ino_num; /* meta inode number*/ | |
372 | unsigned int log_blocks_per_seg; /* log2 blocks per segment */ | |
373 | unsigned int blocks_per_seg; /* blocks per segment */ | |
374 | unsigned int segs_per_sec; /* segments per section */ | |
375 | unsigned int secs_per_zone; /* sections per zone */ | |
376 | unsigned int total_sections; /* total section count */ | |
377 | unsigned int total_node_count; /* total node block count */ | |
378 | unsigned int total_valid_node_count; /* valid node block count */ | |
379 | unsigned int total_valid_inode_count; /* valid inode count */ | |
380 | int active_logs; /* # of active logs */ | |
381 | ||
382 | block_t user_block_count; /* # of user blocks */ | |
383 | block_t total_valid_block_count; /* # of valid blocks */ | |
384 | block_t alloc_valid_block_count; /* # of allocated blocks */ | |
385 | block_t last_valid_block_count; /* for recovery */ | |
386 | u32 s_next_generation; /* for NFS support */ | |
387 | atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */ | |
388 | ||
389 | struct f2fs_mount_info mount_opt; /* mount options */ | |
390 | ||
391 | /* for cleaning operations */ | |
392 | struct mutex gc_mutex; /* mutex for GC */ | |
393 | struct f2fs_gc_kthread *gc_thread; /* GC thread */ | |
394 | ||
395 | /* | |
396 | * for stat information. | |
397 | * one is for the LFS mode, and the other is for the SSR mode. | |
398 | */ | |
399 | struct f2fs_stat_info *stat_info; /* FS status information */ | |
400 | unsigned int segment_count[2]; /* # of allocated segments */ | |
401 | unsigned int block_count[2]; /* # of allocated blocks */ | |
402 | unsigned int last_victim[2]; /* last victim segment # */ | |
403 | int total_hit_ext, read_hit_ext; /* extent cache hit ratio */ | |
404 | int bg_gc; /* background gc calls */ | |
405 | spinlock_t stat_lock; /* lock for stat operations */ | |
406 | }; | |
407 | ||
408 | /* | |
409 | * Inline functions | |
410 | */ | |
411 | static inline struct f2fs_inode_info *F2FS_I(struct inode *inode) | |
412 | { | |
413 | return container_of(inode, struct f2fs_inode_info, vfs_inode); | |
414 | } | |
415 | ||
416 | static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb) | |
417 | { | |
418 | return sb->s_fs_info; | |
419 | } | |
420 | ||
421 | static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi) | |
422 | { | |
423 | return (struct f2fs_super_block *)(sbi->raw_super); | |
424 | } | |
425 | ||
426 | static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi) | |
427 | { | |
428 | return (struct f2fs_checkpoint *)(sbi->ckpt); | |
429 | } | |
430 | ||
431 | static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi) | |
432 | { | |
433 | return (struct f2fs_nm_info *)(sbi->nm_info); | |
434 | } | |
435 | ||
436 | static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi) | |
437 | { | |
438 | return (struct f2fs_sm_info *)(sbi->sm_info); | |
439 | } | |
440 | ||
441 | static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi) | |
442 | { | |
443 | return (struct sit_info *)(SM_I(sbi)->sit_info); | |
444 | } | |
445 | ||
446 | static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi) | |
447 | { | |
448 | return (struct free_segmap_info *)(SM_I(sbi)->free_info); | |
449 | } | |
450 | ||
451 | static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi) | |
452 | { | |
453 | return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info); | |
454 | } | |
455 | ||
456 | static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info *sbi) | |
457 | { | |
458 | sbi->s_dirty = 1; | |
459 | } | |
460 | ||
461 | static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info *sbi) | |
462 | { | |
463 | sbi->s_dirty = 0; | |
464 | } | |
465 | ||
466 | static inline void mutex_lock_op(struct f2fs_sb_info *sbi, enum lock_type t) | |
467 | { | |
468 | mutex_lock_nested(&sbi->fs_lock[t], t); | |
469 | } | |
470 | ||
471 | static inline void mutex_unlock_op(struct f2fs_sb_info *sbi, enum lock_type t) | |
472 | { | |
473 | mutex_unlock(&sbi->fs_lock[t]); | |
474 | } | |
475 | ||
476 | /* | |
477 | * Check whether the given nid is within node id range. | |
478 | */ | |
479 | static inline void check_nid_range(struct f2fs_sb_info *sbi, nid_t nid) | |
480 | { | |
481 | BUG_ON((nid >= NM_I(sbi)->max_nid)); | |
482 | } | |
483 | ||
484 | #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1 | |
485 | ||
486 | /* | |
487 | * Check whether the inode has blocks or not | |
488 | */ | |
489 | static inline int F2FS_HAS_BLOCKS(struct inode *inode) | |
490 | { | |
491 | if (F2FS_I(inode)->i_xattr_nid) | |
492 | return (inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1); | |
493 | else | |
494 | return (inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS); | |
495 | } | |
496 | ||
497 | static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi, | |
498 | struct inode *inode, blkcnt_t count) | |
499 | { | |
500 | block_t valid_block_count; | |
501 | ||
502 | spin_lock(&sbi->stat_lock); | |
503 | valid_block_count = | |
504 | sbi->total_valid_block_count + (block_t)count; | |
505 | if (valid_block_count > sbi->user_block_count) { | |
506 | spin_unlock(&sbi->stat_lock); | |
507 | return false; | |
508 | } | |
509 | inode->i_blocks += count; | |
510 | sbi->total_valid_block_count = valid_block_count; | |
511 | sbi->alloc_valid_block_count += (block_t)count; | |
512 | spin_unlock(&sbi->stat_lock); | |
513 | return true; | |
514 | } | |
515 | ||
516 | static inline int dec_valid_block_count(struct f2fs_sb_info *sbi, | |
517 | struct inode *inode, | |
518 | blkcnt_t count) | |
519 | { | |
520 | spin_lock(&sbi->stat_lock); | |
521 | BUG_ON(sbi->total_valid_block_count < (block_t) count); | |
522 | BUG_ON(inode->i_blocks < count); | |
523 | inode->i_blocks -= count; | |
524 | sbi->total_valid_block_count -= (block_t)count; | |
525 | spin_unlock(&sbi->stat_lock); | |
526 | return 0; | |
527 | } | |
528 | ||
529 | static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type) | |
530 | { | |
531 | atomic_inc(&sbi->nr_pages[count_type]); | |
532 | F2FS_SET_SB_DIRT(sbi); | |
533 | } | |
534 | ||
535 | static inline void inode_inc_dirty_dents(struct inode *inode) | |
536 | { | |
537 | atomic_inc(&F2FS_I(inode)->dirty_dents); | |
538 | } | |
539 | ||
540 | static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type) | |
541 | { | |
542 | atomic_dec(&sbi->nr_pages[count_type]); | |
543 | } | |
544 | ||
545 | static inline void inode_dec_dirty_dents(struct inode *inode) | |
546 | { | |
547 | atomic_dec(&F2FS_I(inode)->dirty_dents); | |
548 | } | |
549 | ||
550 | static inline int get_pages(struct f2fs_sb_info *sbi, int count_type) | |
551 | { | |
552 | return atomic_read(&sbi->nr_pages[count_type]); | |
553 | } | |
554 | ||
555 | static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi) | |
556 | { | |
557 | block_t ret; | |
558 | spin_lock(&sbi->stat_lock); | |
559 | ret = sbi->total_valid_block_count; | |
560 | spin_unlock(&sbi->stat_lock); | |
561 | return ret; | |
562 | } | |
563 | ||
564 | static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag) | |
565 | { | |
566 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
567 | ||
568 | /* return NAT or SIT bitmap */ | |
569 | if (flag == NAT_BITMAP) | |
570 | return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize); | |
571 | else if (flag == SIT_BITMAP) | |
572 | return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize); | |
573 | ||
574 | return 0; | |
575 | } | |
576 | ||
577 | static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag) | |
578 | { | |
579 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
580 | int offset = (flag == NAT_BITMAP) ? ckpt->sit_ver_bitmap_bytesize : 0; | |
581 | return &ckpt->sit_nat_version_bitmap + offset; | |
582 | } | |
583 | ||
584 | static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi) | |
585 | { | |
586 | block_t start_addr; | |
587 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
588 | unsigned long long ckpt_version = le64_to_cpu(ckpt->checkpoint_ver); | |
589 | ||
590 | start_addr = le64_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr); | |
591 | ||
592 | /* | |
593 | * odd numbered checkpoint should at cp segment 0 | |
594 | * and even segent must be at cp segment 1 | |
595 | */ | |
596 | if (!(ckpt_version & 1)) | |
597 | start_addr += sbi->blocks_per_seg; | |
598 | ||
599 | return start_addr; | |
600 | } | |
601 | ||
602 | static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi) | |
603 | { | |
604 | return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum); | |
605 | } | |
606 | ||
607 | static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi, | |
608 | struct inode *inode, | |
609 | unsigned int count) | |
610 | { | |
611 | block_t valid_block_count; | |
612 | unsigned int valid_node_count; | |
613 | ||
614 | spin_lock(&sbi->stat_lock); | |
615 | ||
616 | valid_block_count = sbi->total_valid_block_count + (block_t)count; | |
617 | sbi->alloc_valid_block_count += (block_t)count; | |
618 | valid_node_count = sbi->total_valid_node_count + count; | |
619 | ||
620 | if (valid_block_count > sbi->user_block_count) { | |
621 | spin_unlock(&sbi->stat_lock); | |
622 | return false; | |
623 | } | |
624 | ||
625 | if (valid_node_count > sbi->total_node_count) { | |
626 | spin_unlock(&sbi->stat_lock); | |
627 | return false; | |
628 | } | |
629 | ||
630 | if (inode) | |
631 | inode->i_blocks += count; | |
632 | sbi->total_valid_node_count = valid_node_count; | |
633 | sbi->total_valid_block_count = valid_block_count; | |
634 | spin_unlock(&sbi->stat_lock); | |
635 | ||
636 | return true; | |
637 | } | |
638 | ||
639 | static inline void dec_valid_node_count(struct f2fs_sb_info *sbi, | |
640 | struct inode *inode, | |
641 | unsigned int count) | |
642 | { | |
643 | spin_lock(&sbi->stat_lock); | |
644 | ||
645 | BUG_ON(sbi->total_valid_block_count < count); | |
646 | BUG_ON(sbi->total_valid_node_count < count); | |
647 | BUG_ON(inode->i_blocks < count); | |
648 | ||
649 | inode->i_blocks -= count; | |
650 | sbi->total_valid_node_count -= count; | |
651 | sbi->total_valid_block_count -= (block_t)count; | |
652 | ||
653 | spin_unlock(&sbi->stat_lock); | |
654 | } | |
655 | ||
656 | static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi) | |
657 | { | |
658 | unsigned int ret; | |
659 | spin_lock(&sbi->stat_lock); | |
660 | ret = sbi->total_valid_node_count; | |
661 | spin_unlock(&sbi->stat_lock); | |
662 | return ret; | |
663 | } | |
664 | ||
665 | static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi) | |
666 | { | |
667 | spin_lock(&sbi->stat_lock); | |
668 | BUG_ON(sbi->total_valid_inode_count == sbi->total_node_count); | |
669 | sbi->total_valid_inode_count++; | |
670 | spin_unlock(&sbi->stat_lock); | |
671 | } | |
672 | ||
673 | static inline int dec_valid_inode_count(struct f2fs_sb_info *sbi) | |
674 | { | |
675 | spin_lock(&sbi->stat_lock); | |
676 | BUG_ON(!sbi->total_valid_inode_count); | |
677 | sbi->total_valid_inode_count--; | |
678 | spin_unlock(&sbi->stat_lock); | |
679 | return 0; | |
680 | } | |
681 | ||
682 | static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi) | |
683 | { | |
684 | unsigned int ret; | |
685 | spin_lock(&sbi->stat_lock); | |
686 | ret = sbi->total_valid_inode_count; | |
687 | spin_unlock(&sbi->stat_lock); | |
688 | return ret; | |
689 | } | |
690 | ||
691 | static inline void f2fs_put_page(struct page *page, int unlock) | |
692 | { | |
693 | if (!page || IS_ERR(page)) | |
694 | return; | |
695 | ||
696 | if (unlock) { | |
697 | BUG_ON(!PageLocked(page)); | |
698 | unlock_page(page); | |
699 | } | |
700 | page_cache_release(page); | |
701 | } | |
702 | ||
703 | static inline void f2fs_put_dnode(struct dnode_of_data *dn) | |
704 | { | |
705 | if (dn->node_page) | |
706 | f2fs_put_page(dn->node_page, 1); | |
707 | if (dn->inode_page && dn->node_page != dn->inode_page) | |
708 | f2fs_put_page(dn->inode_page, 0); | |
709 | dn->node_page = NULL; | |
710 | dn->inode_page = NULL; | |
711 | } | |
712 | ||
713 | static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name, | |
714 | size_t size, void (*ctor)(void *)) | |
715 | { | |
716 | return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, ctor); | |
717 | } | |
718 | ||
719 | #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino) | |
720 | ||
721 | static inline bool IS_INODE(struct page *page) | |
722 | { | |
723 | struct f2fs_node *p = (struct f2fs_node *)page_address(page); | |
724 | return RAW_IS_INODE(p); | |
725 | } | |
726 | ||
727 | static inline __le32 *blkaddr_in_node(struct f2fs_node *node) | |
728 | { | |
729 | return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr; | |
730 | } | |
731 | ||
732 | static inline block_t datablock_addr(struct page *node_page, | |
733 | unsigned int offset) | |
734 | { | |
735 | struct f2fs_node *raw_node; | |
736 | __le32 *addr_array; | |
737 | raw_node = (struct f2fs_node *)page_address(node_page); | |
738 | addr_array = blkaddr_in_node(raw_node); | |
739 | return le32_to_cpu(addr_array[offset]); | |
740 | } | |
741 | ||
742 | static inline int f2fs_test_bit(unsigned int nr, char *addr) | |
743 | { | |
744 | int mask; | |
745 | ||
746 | addr += (nr >> 3); | |
747 | mask = 1 << (7 - (nr & 0x07)); | |
748 | return mask & *addr; | |
749 | } | |
750 | ||
751 | static inline int f2fs_set_bit(unsigned int nr, char *addr) | |
752 | { | |
753 | int mask; | |
754 | int ret; | |
755 | ||
756 | addr += (nr >> 3); | |
757 | mask = 1 << (7 - (nr & 0x07)); | |
758 | ret = mask & *addr; | |
759 | *addr |= mask; | |
760 | return ret; | |
761 | } | |
762 | ||
763 | static inline int f2fs_clear_bit(unsigned int nr, char *addr) | |
764 | { | |
765 | int mask; | |
766 | int ret; | |
767 | ||
768 | addr += (nr >> 3); | |
769 | mask = 1 << (7 - (nr & 0x07)); | |
770 | ret = mask & *addr; | |
771 | *addr &= ~mask; | |
772 | return ret; | |
773 | } | |
774 | ||
775 | /* used for f2fs_inode_info->flags */ | |
776 | enum { | |
777 | FI_NEW_INODE, /* indicate newly allocated inode */ | |
778 | FI_NEED_CP, /* need to do checkpoint during fsync */ | |
779 | FI_INC_LINK, /* need to increment i_nlink */ | |
780 | FI_ACL_MODE, /* indicate acl mode */ | |
781 | FI_NO_ALLOC, /* should not allocate any blocks */ | |
782 | }; | |
783 | ||
784 | static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag) | |
785 | { | |
786 | set_bit(flag, &fi->flags); | |
787 | } | |
788 | ||
789 | static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag) | |
790 | { | |
791 | return test_bit(flag, &fi->flags); | |
792 | } | |
793 | ||
794 | static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag) | |
795 | { | |
796 | clear_bit(flag, &fi->flags); | |
797 | } | |
798 | ||
799 | static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode) | |
800 | { | |
801 | fi->i_acl_mode = mode; | |
802 | set_inode_flag(fi, FI_ACL_MODE); | |
803 | } | |
804 | ||
805 | static inline int cond_clear_inode_flag(struct f2fs_inode_info *fi, int flag) | |
806 | { | |
807 | if (is_inode_flag_set(fi, FI_ACL_MODE)) { | |
808 | clear_inode_flag(fi, FI_ACL_MODE); | |
809 | return 1; | |
810 | } | |
811 | return 0; | |
812 | } | |
813 | ||
814 | /* | |
815 | * file.c | |
816 | */ | |
817 | int f2fs_sync_file(struct file *, loff_t, loff_t, int); | |
818 | void truncate_data_blocks(struct dnode_of_data *); | |
819 | void f2fs_truncate(struct inode *); | |
820 | int f2fs_setattr(struct dentry *, struct iattr *); | |
821 | int truncate_hole(struct inode *, pgoff_t, pgoff_t); | |
822 | long f2fs_ioctl(struct file *, unsigned int, unsigned long); | |
823 | ||
824 | /* | |
825 | * inode.c | |
826 | */ | |
827 | void f2fs_set_inode_flags(struct inode *); | |
828 | struct inode *f2fs_iget_nowait(struct super_block *, unsigned long); | |
829 | struct inode *f2fs_iget(struct super_block *, unsigned long); | |
830 | void update_inode(struct inode *, struct page *); | |
831 | int f2fs_write_inode(struct inode *, struct writeback_control *); | |
832 | void f2fs_evict_inode(struct inode *); | |
833 | ||
834 | /* | |
835 | * namei.c | |
836 | */ | |
837 | struct dentry *f2fs_get_parent(struct dentry *child); | |
838 | ||
839 | /* | |
840 | * dir.c | |
841 | */ | |
842 | struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *, | |
843 | struct page **); | |
844 | struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **); | |
845 | ino_t f2fs_inode_by_name(struct inode *, struct qstr *); | |
846 | void f2fs_set_link(struct inode *, struct f2fs_dir_entry *, | |
847 | struct page *, struct inode *); | |
848 | void init_dent_inode(struct dentry *, struct page *); | |
849 | int f2fs_add_link(struct dentry *, struct inode *); | |
850 | void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *); | |
851 | int f2fs_make_empty(struct inode *, struct inode *); | |
852 | bool f2fs_empty_dir(struct inode *); | |
853 | ||
854 | /* | |
855 | * super.c | |
856 | */ | |
857 | int f2fs_sync_fs(struct super_block *, int); | |
858 | ||
859 | /* | |
860 | * hash.c | |
861 | */ | |
862 | f2fs_hash_t f2fs_dentry_hash(const char *, int); | |
863 | ||
864 | /* | |
865 | * node.c | |
866 | */ | |
867 | struct dnode_of_data; | |
868 | struct node_info; | |
869 | ||
870 | int is_checkpointed_node(struct f2fs_sb_info *, nid_t); | |
871 | void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *); | |
872 | int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int); | |
873 | int truncate_inode_blocks(struct inode *, pgoff_t); | |
874 | int remove_inode_page(struct inode *); | |
875 | int new_inode_page(struct inode *, struct dentry *); | |
876 | struct page *new_node_page(struct dnode_of_data *, unsigned int); | |
877 | void ra_node_page(struct f2fs_sb_info *, nid_t); | |
878 | struct page *get_node_page(struct f2fs_sb_info *, pgoff_t); | |
879 | struct page *get_node_page_ra(struct page *, int); | |
880 | void sync_inode_page(struct dnode_of_data *); | |
881 | int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *); | |
882 | bool alloc_nid(struct f2fs_sb_info *, nid_t *); | |
883 | void alloc_nid_done(struct f2fs_sb_info *, nid_t); | |
884 | void alloc_nid_failed(struct f2fs_sb_info *, nid_t); | |
885 | void recover_node_page(struct f2fs_sb_info *, struct page *, | |
886 | struct f2fs_summary *, struct node_info *, block_t); | |
887 | int recover_inode_page(struct f2fs_sb_info *, struct page *); | |
888 | int restore_node_summary(struct f2fs_sb_info *, unsigned int, | |
889 | struct f2fs_summary_block *); | |
890 | void flush_nat_entries(struct f2fs_sb_info *); | |
891 | int build_node_manager(struct f2fs_sb_info *); | |
892 | void destroy_node_manager(struct f2fs_sb_info *); | |
893 | int create_node_manager_caches(void); | |
894 | void destroy_node_manager_caches(void); | |
895 | ||
896 | /* | |
897 | * segment.c | |
898 | */ | |
899 | void f2fs_balance_fs(struct f2fs_sb_info *); | |
900 | void invalidate_blocks(struct f2fs_sb_info *, block_t); | |
901 | void locate_dirty_segment(struct f2fs_sb_info *, unsigned int); | |
902 | void clear_prefree_segments(struct f2fs_sb_info *); | |
903 | int npages_for_summary_flush(struct f2fs_sb_info *); | |
904 | void allocate_new_segments(struct f2fs_sb_info *); | |
905 | struct page *get_sum_page(struct f2fs_sb_info *, unsigned int); | |
906 | struct bio *f2fs_bio_alloc(struct block_device *, sector_t, int, gfp_t); | |
907 | void f2fs_submit_bio(struct f2fs_sb_info *, enum page_type, bool sync); | |
908 | int write_meta_page(struct f2fs_sb_info *, struct page *, | |
909 | struct writeback_control *); | |
910 | void write_node_page(struct f2fs_sb_info *, struct page *, unsigned int, | |
911 | block_t, block_t *); | |
912 | void write_data_page(struct inode *, struct page *, struct dnode_of_data*, | |
913 | block_t, block_t *); | |
914 | void rewrite_data_page(struct f2fs_sb_info *, struct page *, block_t); | |
915 | void recover_data_page(struct f2fs_sb_info *, struct page *, | |
916 | struct f2fs_summary *, block_t, block_t); | |
917 | void rewrite_node_page(struct f2fs_sb_info *, struct page *, | |
918 | struct f2fs_summary *, block_t, block_t); | |
919 | void write_data_summaries(struct f2fs_sb_info *, block_t); | |
920 | void write_node_summaries(struct f2fs_sb_info *, block_t); | |
921 | int lookup_journal_in_cursum(struct f2fs_summary_block *, | |
922 | int, unsigned int, int); | |
923 | void flush_sit_entries(struct f2fs_sb_info *); | |
924 | int build_segment_manager(struct f2fs_sb_info *); | |
925 | void reset_victim_segmap(struct f2fs_sb_info *); | |
926 | void destroy_segment_manager(struct f2fs_sb_info *); | |
927 | ||
928 | /* | |
929 | * checkpoint.c | |
930 | */ | |
931 | struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t); | |
932 | struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t); | |
933 | long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long); | |
934 | int check_orphan_space(struct f2fs_sb_info *); | |
935 | void add_orphan_inode(struct f2fs_sb_info *, nid_t); | |
936 | void remove_orphan_inode(struct f2fs_sb_info *, nid_t); | |
937 | int recover_orphan_inodes(struct f2fs_sb_info *); | |
938 | int get_valid_checkpoint(struct f2fs_sb_info *); | |
939 | void set_dirty_dir_page(struct inode *, struct page *); | |
940 | void remove_dirty_dir_inode(struct inode *); | |
941 | void sync_dirty_dir_inodes(struct f2fs_sb_info *); | |
942 | void block_operations(struct f2fs_sb_info *); | |
943 | void write_checkpoint(struct f2fs_sb_info *, bool, bool); | |
944 | void init_orphan_info(struct f2fs_sb_info *); | |
945 | int create_checkpoint_caches(void); | |
946 | void destroy_checkpoint_caches(void); | |
947 | ||
948 | /* | |
949 | * data.c | |
950 | */ | |
951 | int reserve_new_block(struct dnode_of_data *); | |
952 | void update_extent_cache(block_t, struct dnode_of_data *); | |
953 | struct page *find_data_page(struct inode *, pgoff_t); | |
954 | struct page *get_lock_data_page(struct inode *, pgoff_t); | |
955 | struct page *get_new_data_page(struct inode *, pgoff_t, bool); | |
956 | int f2fs_readpage(struct f2fs_sb_info *, struct page *, block_t, int); | |
957 | int do_write_data_page(struct page *); | |
958 | ||
959 | /* | |
960 | * gc.c | |
961 | */ | |
962 | int start_gc_thread(struct f2fs_sb_info *); | |
963 | void stop_gc_thread(struct f2fs_sb_info *); | |
964 | block_t start_bidx_of_node(unsigned int); | |
965 | int f2fs_gc(struct f2fs_sb_info *, int); | |
966 | void build_gc_manager(struct f2fs_sb_info *); | |
967 | int create_gc_caches(void); | |
968 | void destroy_gc_caches(void); | |
969 | ||
970 | /* | |
971 | * recovery.c | |
972 | */ | |
973 | void recover_fsync_data(struct f2fs_sb_info *); | |
974 | bool space_for_roll_forward(struct f2fs_sb_info *); | |
975 | ||
976 | /* | |
977 | * debug.c | |
978 | */ | |
979 | #ifdef CONFIG_F2FS_STAT_FS | |
980 | struct f2fs_stat_info { | |
981 | struct list_head stat_list; | |
982 | struct f2fs_sb_info *sbi; | |
983 | struct mutex stat_lock; | |
984 | int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs; | |
985 | int main_area_segs, main_area_sections, main_area_zones; | |
986 | int hit_ext, total_ext; | |
987 | int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta; | |
988 | int nats, sits, fnids; | |
989 | int total_count, utilization; | |
990 | int bg_gc; | |
991 | unsigned int valid_count, valid_node_count, valid_inode_count; | |
992 | unsigned int bimodal, avg_vblocks; | |
993 | int util_free, util_valid, util_invalid; | |
994 | int rsvd_segs, overp_segs; | |
995 | int dirty_count, node_pages, meta_pages; | |
996 | int prefree_count, call_count; | |
997 | int tot_segs, node_segs, data_segs, free_segs, free_secs; | |
998 | int tot_blks, data_blks, node_blks; | |
999 | int curseg[NR_CURSEG_TYPE]; | |
1000 | int cursec[NR_CURSEG_TYPE]; | |
1001 | int curzone[NR_CURSEG_TYPE]; | |
1002 | ||
1003 | unsigned int segment_count[2]; | |
1004 | unsigned int block_count[2]; | |
1005 | unsigned base_mem, cache_mem; | |
1006 | }; | |
1007 | ||
1008 | #define stat_inc_call_count(si) ((si)->call_count++) | |
1009 | ||
1010 | #define stat_inc_seg_count(sbi, type) \ | |
1011 | do { \ | |
1012 | struct f2fs_stat_info *si = sbi->stat_info; \ | |
1013 | (si)->tot_segs++; \ | |
1014 | if (type == SUM_TYPE_DATA) \ | |
1015 | si->data_segs++; \ | |
1016 | else \ | |
1017 | si->node_segs++; \ | |
1018 | } while (0) | |
1019 | ||
1020 | #define stat_inc_tot_blk_count(si, blks) \ | |
1021 | (si->tot_blks += (blks)) | |
1022 | ||
1023 | #define stat_inc_data_blk_count(sbi, blks) \ | |
1024 | do { \ | |
1025 | struct f2fs_stat_info *si = sbi->stat_info; \ | |
1026 | stat_inc_tot_blk_count(si, blks); \ | |
1027 | si->data_blks += (blks); \ | |
1028 | } while (0) | |
1029 | ||
1030 | #define stat_inc_node_blk_count(sbi, blks) \ | |
1031 | do { \ | |
1032 | struct f2fs_stat_info *si = sbi->stat_info; \ | |
1033 | stat_inc_tot_blk_count(si, blks); \ | |
1034 | si->node_blks += (blks); \ | |
1035 | } while (0) | |
1036 | ||
1037 | int f2fs_build_stats(struct f2fs_sb_info *); | |
1038 | void f2fs_destroy_stats(struct f2fs_sb_info *); | |
1039 | void destroy_root_stats(void); | |
1040 | #else | |
1041 | #define stat_inc_call_count(si) | |
1042 | #define stat_inc_seg_count(si, type) | |
1043 | #define stat_inc_tot_blk_count(si, blks) | |
1044 | #define stat_inc_data_blk_count(si, blks) | |
1045 | #define stat_inc_node_blk_count(sbi, blks) | |
1046 | ||
1047 | static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; } | |
1048 | static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { } | |
1049 | static inline void destroy_root_stats(void) { } | |
1050 | #endif | |
1051 | ||
1052 | extern const struct file_operations f2fs_dir_operations; | |
1053 | extern const struct file_operations f2fs_file_operations; | |
1054 | extern const struct inode_operations f2fs_file_inode_operations; | |
1055 | extern const struct address_space_operations f2fs_dblock_aops; | |
1056 | extern const struct address_space_operations f2fs_node_aops; | |
1057 | extern const struct address_space_operations f2fs_meta_aops; | |
1058 | extern const struct inode_operations f2fs_dir_inode_operations; | |
1059 | extern const struct inode_operations f2fs_symlink_inode_operations; | |
1060 | extern const struct inode_operations f2fs_special_inode_operations; | |
1061 | #endif |