projects / GitHub / exynos8895 / android_kernel_samsung_universal8895.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
f2fs: no need to check other dirty_segmap when the seg has been found
[GitHub/exynos8895/android_kernel_samsung_universal8895.git] / fs / f2fs / f2fs.h
CommitLineData
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>
39a53e0c
JK		 21
22/*
23 * For mount options
24 */
25#define F2FS_MOUNT_BG_GC 0x00000001
26#define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
27#define F2FS_MOUNT_DISCARD 0x00000004
28#define F2FS_MOUNT_NOHEAP 0x00000008
29#define F2FS_MOUNT_XATTR_USER 0x00000010
30#define F2FS_MOUNT_POSIX_ACL 0x00000020
31#define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
444c580f 32#define F2FS_MOUNT_INLINE_XATTR 0x00000080
39a53e0c
JK		 33
34#define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
35#define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
36#define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
37
38#define ver_after(a, b) (typecheck(unsigned long long, a) && \
39 typecheck(unsigned long long, b) && \
40 ((long long)((a) - (b)) > 0))
41
a9841c4d
JK		 42typedef u32 block_t; /*
43 * should not change u32, since it is the on-disk block
44 * address format, __le32.
45 */
39a53e0c
JK		 46typedef u32 nid_t;
47
48struct f2fs_mount_info {
49 unsigned int opt;
50};
51
7e586fa0
JK		 52#define CRCPOLY_LE 0xedb88320
53
54static inline __u32 f2fs_crc32(void *buf, size_t len)
39a53e0c 55{
7e586fa0
JK		 56 unsigned char *p = (unsigned char *)buf;
57 __u32 crc = F2FS_SUPER_MAGIC;
58 int i;
59
60 while (len--) {
61 crc ^= *p++;
62 for (i = 0; i < 8; i++)
63 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
64 }
65 return crc;
39a53e0c
JK		 66}
67
7e586fa0 68static inline bool f2fs_crc_valid(__u32 blk_crc, void *buf, size_t buf_size)
39a53e0c 69{
7e586fa0 70 return f2fs_crc32(buf, buf_size) == blk_crc;
39a53e0c
JK		 71}
72
73/*
74 * For checkpoint manager
75 */
76enum {
77 NAT_BITMAP,
78 SIT_BITMAP
79};
80
81/* for the list of orphan inodes */
82struct orphan_inode_entry {
83 struct list_head list; /* list head */
84 nid_t ino; /* inode number */
85};
86
87/* for the list of directory inodes */
88struct dir_inode_entry {
89 struct list_head list; /* list head */
90 struct inode *inode; /* vfs inode pointer */
91};
92
93/* for the list of fsync inodes, used only during recovery */
94struct fsync_inode_entry {
95 struct list_head list; /* list head */
96 struct inode *inode; /* vfs inode pointer */
97 block_t blkaddr; /* block address locating the last inode */
98};
99
100#define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
101#define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
102
103#define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
104#define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
105#define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
106#define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
107
108static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i)
109{
110 int before = nats_in_cursum(rs);
111 rs->n_nats = cpu_to_le16(before + i);
112 return before;
113}
114
115static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i)
116{
117 int before = sits_in_cursum(rs);
118 rs->n_sits = cpu_to_le16(before + i);
119 return before;
120}
121
e9750824
NJ		 122/*
123 * ioctl commands
124 */
125#define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
126#define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
127
128#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
129/*
130 * ioctl commands in 32 bit emulation
131 */
132#define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
133#define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
134#endif
135
39a53e0c
JK		 136/*
137 * For INODE and NODE manager
138 */
dbe6a5ff
JK		 139/*
140 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
141 * as its node offset to distinguish from index node blocks.
142 * But some bits are used to mark the node block.
143 */
144#define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
145 >> OFFSET_BIT_SHIFT)
266e97a8
JK		 146enum {
147 ALLOC_NODE, /* allocate a new node page if needed */
148 LOOKUP_NODE, /* look up a node without readahead */
149 LOOKUP_NODE_RA, /*
150 * look up a node with readahead called
151 * by get_datablock_ro.
39a53e0c 152 */
266e97a8
JK		 153};
154
39a53e0c
JK		 155#define F2FS_LINK_MAX 32000 /* maximum link count per file */
156
157/* for in-memory extent cache entry */
158struct extent_info {
159 rwlock_t ext_lock; /* rwlock for consistency */
160 unsigned int fofs; /* start offset in a file */
161 u32 blk_addr; /* start block address of the extent */
111d2495 162 unsigned int len; /* length of the extent */
39a53e0c
JK		 163};
164
165/*
166 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
167 */
168#define FADVISE_COLD_BIT 0x01
354a3399 169#define FADVISE_LOST_PINO_BIT 0x02
39a53e0c
JK		 170
171struct f2fs_inode_info {
172 struct inode vfs_inode; /* serve a vfs inode */
173 unsigned long i_flags; /* keep an inode flags for ioctl */
174 unsigned char i_advise; /* use to give file attribute hints */
175 unsigned int i_current_depth; /* use only in directory structure */
6666e6aa 176 unsigned int i_pino; /* parent inode number */
39a53e0c
JK		 177 umode_t i_acl_mode; /* keep file acl mode temporarily */
178
179 /* Use below internally in f2fs*/
180 unsigned long flags; /* use to pass per-file flags */
39a53e0c
JK		 181 atomic_t dirty_dents; /* # of dirty dentry pages */
182 f2fs_hash_t chash; /* hash value of given file name */
183 unsigned int clevel; /* maximum level of given file name */
184 nid_t i_xattr_nid; /* node id that contains xattrs */
e518ff81 185 unsigned long long xattr_ver; /* cp version of xattr modification */
39a53e0c
JK		 186 struct extent_info ext; /* in-memory extent cache entry */
187};
188
189static inline void get_extent_info(struct extent_info *ext,
190 struct f2fs_extent i_ext)
191{
192 write_lock(&ext->ext_lock);
193 ext->fofs = le32_to_cpu(i_ext.fofs);
194 ext->blk_addr = le32_to_cpu(i_ext.blk_addr);
195 ext->len = le32_to_cpu(i_ext.len);
196 write_unlock(&ext->ext_lock);
197}
198
199static inline void set_raw_extent(struct extent_info *ext,
200 struct f2fs_extent *i_ext)
201{
202 read_lock(&ext->ext_lock);
203 i_ext->fofs = cpu_to_le32(ext->fofs);
204 i_ext->blk_addr = cpu_to_le32(ext->blk_addr);
205 i_ext->len = cpu_to_le32(ext->len);
206 read_unlock(&ext->ext_lock);
207}
208
209struct f2fs_nm_info {
210 block_t nat_blkaddr; /* base disk address of NAT */
211 nid_t max_nid; /* maximum possible node ids */
39a53e0c
JK		 212 nid_t next_scan_nid; /* the next nid to be scanned */
213
214 /* NAT cache management */
215 struct radix_tree_root nat_root;/* root of the nat entry cache */
216 rwlock_t nat_tree_lock; /* protect nat_tree_lock */
217 unsigned int nat_cnt; /* the # of cached nat entries */
218 struct list_head nat_entries; /* cached nat entry list (clean) */
219 struct list_head dirty_nat_entries; /* cached nat entry list (dirty) */
220
221 /* free node ids management */
222 struct list_head free_nid_list; /* a list for free nids */
223 spinlock_t free_nid_list_lock; /* protect free nid list */
224 unsigned int fcnt; /* the number of free node id */
225 struct mutex build_lock; /* lock for build free nids */
226
227 /* for checkpoint */
228 char *nat_bitmap; /* NAT bitmap pointer */
229 int bitmap_size; /* bitmap size */
230};
231
232/*
233 * this structure is used as one of function parameters.
234 * all the information are dedicated to a given direct node block determined
235 * by the data offset in a file.
236 */
237struct dnode_of_data {
238 struct inode *inode; /* vfs inode pointer */
239 struct page *inode_page; /* its inode page, NULL is possible */
240 struct page *node_page; /* cached direct node page */
241 nid_t nid; /* node id of the direct node block */
242 unsigned int ofs_in_node; /* data offset in the node page */
243 bool inode_page_locked; /* inode page is locked or not */
244 block_t data_blkaddr; /* block address of the node block */
245};
246
247static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
248 struct page *ipage, struct page *npage, nid_t nid)
249{
d66d1f76 250 memset(dn, 0, sizeof(*dn));
39a53e0c
JK		 251 dn->inode = inode;
252 dn->inode_page = ipage;
253 dn->node_page = npage;
254 dn->nid = nid;
39a53e0c
JK		 255}
256
257/*
258 * For SIT manager
259 *
260 * By default, there are 6 active log areas across the whole main area.
261 * When considering hot and cold data separation to reduce cleaning overhead,
262 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
263 * respectively.
264 * In the current design, you should not change the numbers intentionally.
265 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
266 * logs individually according to the underlying devices. (default: 6)
267 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
268 * data and 8 for node logs.
269 */
270#define NR_CURSEG_DATA_TYPE (3)
271#define NR_CURSEG_NODE_TYPE (3)
272#define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
273
274enum {
275 CURSEG_HOT_DATA = 0, /* directory entry blocks */
276 CURSEG_WARM_DATA, /* data blocks */
277 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
278 CURSEG_HOT_NODE, /* direct node blocks of directory files */
279 CURSEG_WARM_NODE, /* direct node blocks of normal files */
280 CURSEG_COLD_NODE, /* indirect node blocks */
281 NO_CHECK_TYPE
282};
283
284struct f2fs_sm_info {
285 struct sit_info *sit_info; /* whole segment information */
286 struct free_segmap_info *free_info; /* free segment information */
287 struct dirty_seglist_info *dirty_info; /* dirty segment information */
288 struct curseg_info *curseg_array; /* active segment information */
289
290 struct list_head wblist_head; /* list of under-writeback pages */
291 spinlock_t wblist_lock; /* lock for checkpoint */
292
293 block_t seg0_blkaddr; /* block address of 0'th segment */
294 block_t main_blkaddr; /* start block address of main area */
295 block_t ssa_blkaddr; /* start block address of SSA area */
296
297 unsigned int segment_count; /* total # of segments */
298 unsigned int main_segments; /* # of segments in main area */
299 unsigned int reserved_segments; /* # of reserved segments */
300 unsigned int ovp_segments; /* # of overprovision segments */
301};
302
39a53e0c
JK		 303/*
304 * For superblock
305 */
306/*
307 * COUNT_TYPE for monitoring
308 *
309 * f2fs monitors the number of several block types such as on-writeback,
310 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
311 */
312enum count_type {
313 F2FS_WRITEBACK,
314 F2FS_DIRTY_DENTS,
315 F2FS_DIRTY_NODES,
316 F2FS_DIRTY_META,
317 NR_COUNT_TYPE,
318};
319
39a53e0c
JK		 320/*
321 * The below are the page types of bios used in submti_bio().
322 * The available types are:
323 * DATA User data pages. It operates as async mode.
324 * NODE Node pages. It operates as async mode.
325 * META FS metadata pages such as SIT, NAT, CP.
326 * NR_PAGE_TYPE The number of page types.
327 * META_FLUSH Make sure the previous pages are written
328 * with waiting the bio's completion
329 * ... Only can be used with META.
330 */
331enum page_type {
332 DATA,
333 NODE,
334 META,
335 NR_PAGE_TYPE,
336 META_FLUSH,
337};
338
339struct f2fs_sb_info {
340 struct super_block *sb; /* pointer to VFS super block */
5e176d54 341 struct proc_dir_entry *s_proc; /* proc entry */
39a53e0c
JK		 342 struct buffer_head *raw_super_buf; /* buffer head of raw sb */
343 struct f2fs_super_block *raw_super; /* raw super block pointer */
344 int s_dirty; /* dirty flag for checkpoint */
345
346 /* for node-related operations */
347 struct f2fs_nm_info *nm_info; /* node manager */
348 struct inode *node_inode; /* cache node blocks */
349
350 /* for segment-related operations */
351 struct f2fs_sm_info *sm_info; /* segment manager */
352 struct bio *bio[NR_PAGE_TYPE]; /* bios to merge */
353 sector_t last_block_in_bio[NR_PAGE_TYPE]; /* last block number */
354 struct rw_semaphore bio_sem; /* IO semaphore */
355
356 /* for checkpoint */
357 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
358 struct inode *meta_inode; /* cache meta blocks */
39936837 359 struct mutex cp_mutex; /* checkpoint procedure lock */
e479556b 360 struct rw_semaphore cp_rwsem; /* blocking FS operations */
39936837 361 struct mutex node_write; /* locking node writes */
39a53e0c
JK		 362 struct mutex writepages; /* mutex for writepages() */
363 int por_doing; /* recovery is doing or not */
55008d84 364 int on_build_free_nids; /* build_free_nids is doing */
e2340887 365 struct task_struct *cp_task; /* checkpoint task */
39a53e0c
JK		 366
367 /* for orphan inode management */
368 struct list_head orphan_inode_list; /* orphan inode list */
369 struct mutex orphan_inode_mutex; /* for orphan inode list */
370 unsigned int n_orphans; /* # of orphan inodes */
371
372 /* for directory inode management */
373 struct list_head dir_inode_list; /* dir inode list */
374 spinlock_t dir_inode_lock; /* for dir inode list lock */
39a53e0c
JK		 375
376 /* basic file system units */
377 unsigned int log_sectors_per_block; /* log2 sectors per block */
378 unsigned int log_blocksize; /* log2 block size */
379 unsigned int blocksize; /* block size */
380 unsigned int root_ino_num; /* root inode number*/
381 unsigned int node_ino_num; /* node inode number*/
382 unsigned int meta_ino_num; /* meta inode number*/
383 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
384 unsigned int blocks_per_seg; /* blocks per segment */
385 unsigned int segs_per_sec; /* segments per section */
386 unsigned int secs_per_zone; /* sections per zone */
387 unsigned int total_sections; /* total section count */
388 unsigned int total_node_count; /* total node block count */
389 unsigned int total_valid_node_count; /* valid node block count */
390 unsigned int total_valid_inode_count; /* valid inode count */
391 int active_logs; /* # of active logs */
392
393 block_t user_block_count; /* # of user blocks */
394 block_t total_valid_block_count; /* # of valid blocks */
395 block_t alloc_valid_block_count; /* # of allocated blocks */
396 block_t last_valid_block_count; /* for recovery */
397 u32 s_next_generation; /* for NFS support */
398 atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */
399
400 struct f2fs_mount_info mount_opt; /* mount options */
401
402 /* for cleaning operations */
403 struct mutex gc_mutex; /* mutex for GC */
404 struct f2fs_gc_kthread *gc_thread; /* GC thread */
5ec4e49f 405 unsigned int cur_victim_sec; /* current victim section num */
39a53e0c
JK		 406
407 /*
408 * for stat information.
409 * one is for the LFS mode, and the other is for the SSR mode.
410 */
35b09d82 411#ifdef CONFIG_F2FS_STAT_FS
39a53e0c
JK		 412 struct f2fs_stat_info *stat_info; /* FS status information */
413 unsigned int segment_count[2]; /* # of allocated segments */
414 unsigned int block_count[2]; /* # of allocated blocks */
39a53e0c
JK		 415 int total_hit_ext, read_hit_ext; /* extent cache hit ratio */
416 int bg_gc; /* background gc calls */
35b09d82
NJ		 417 unsigned int n_dirty_dirs; /* # of dir inodes */
418#endif
419 unsigned int last_victim[2]; /* last victim segment # */
39a53e0c 420 spinlock_t stat_lock; /* lock for stat operations */
b59d0bae
NJ		 421
422 /* For sysfs suppport */
423 struct kobject s_kobj;
424 struct completion s_kobj_unregister;
39a53e0c
JK		 425};
426
427/*
428 * Inline functions
429 */
430static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
431{
432 return container_of(inode, struct f2fs_inode_info, vfs_inode);
433}
434
435static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
436{
437 return sb->s_fs_info;
438}
439
440static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
441{
442 return (struct f2fs_super_block *)(sbi->raw_super);
443}
444
445static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
446{
447 return (struct f2fs_checkpoint *)(sbi->ckpt);
448}
449
45590710
GZ		 450static inline struct f2fs_node *F2FS_NODE(struct page *page)
451{
452 return (struct f2fs_node *)page_address(page);
453}
454
39a53e0c
JK		 455static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
456{
457 return (struct f2fs_nm_info *)(sbi->nm_info);
458}
459
460static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
461{
462 return (struct f2fs_sm_info *)(sbi->sm_info);
463}
464
465static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
466{
467 return (struct sit_info *)(SM_I(sbi)->sit_info);
468}
469
470static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
471{
472 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
473}
474
475static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
476{
477 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
478}
479
480static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info *sbi)
481{
482 sbi->s_dirty = 1;
483}
484
485static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info *sbi)
486{
487 sbi->s_dirty = 0;
488}
489
d71b5564
JK		 490static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
491{
492 return le64_to_cpu(cp->checkpoint_ver);
493}
494
25ca923b
JK		 495static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
496{
497 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
498 return ckpt_flags & f;
499}
500
501static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
502{
503 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
504 ckpt_flags |= f;
505 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
506}
507
508static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
509{
510 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
511 ckpt_flags &= (~f);
512 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
513}
514
e479556b 515static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
39936837 516{
e479556b 517 down_read(&sbi->cp_rwsem);
39936837
JK		 518}
519
e479556b 520static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
39a53e0c 521{
e479556b 522 up_read(&sbi->cp_rwsem);
39a53e0c
JK		 523}
524
e479556b 525static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
39a53e0c 526{
e479556b 527 down_write_nest_lock(&sbi->cp_rwsem, &sbi->cp_mutex);
39936837
JK		 528}
529
e479556b 530static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
39936837 531{
e479556b 532 up_write(&sbi->cp_rwsem);
39a53e0c
JK		 533}
534
535/*
536 * Check whether the given nid is within node id range.
537 */
064e0823 538static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
39a53e0c 539{
064e0823
NJ		 540 WARN_ON((nid >= NM_I(sbi)->max_nid));
541 if (nid >= NM_I(sbi)->max_nid)
542 return -EINVAL;
543 return 0;
39a53e0c
JK		 544}
545
546#define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
547
548/*
549 * Check whether the inode has blocks or not
550 */
551static inline int F2FS_HAS_BLOCKS(struct inode *inode)
552{
553 if (F2FS_I(inode)->i_xattr_nid)
554 return (inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1);
555 else
556 return (inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS);
557}
558
559static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
560 struct inode *inode, blkcnt_t count)
561{
562 block_t valid_block_count;
563
564 spin_lock(&sbi->stat_lock);
565 valid_block_count =
566 sbi->total_valid_block_count + (block_t)count;
567 if (valid_block_count > sbi->user_block_count) {
568 spin_unlock(&sbi->stat_lock);
569 return false;
570 }
571 inode->i_blocks += count;
572 sbi->total_valid_block_count = valid_block_count;
573 sbi->alloc_valid_block_count += (block_t)count;
574 spin_unlock(&sbi->stat_lock);
575 return true;
576}
577
578static inline int dec_valid_block_count(struct f2fs_sb_info *sbi,
579 struct inode *inode,
580 blkcnt_t count)
581{
582 spin_lock(&sbi->stat_lock);
583 BUG_ON(sbi->total_valid_block_count < (block_t) count);
584 BUG_ON(inode->i_blocks < count);
585 inode->i_blocks -= count;
586 sbi->total_valid_block_count -= (block_t)count;
587 spin_unlock(&sbi->stat_lock);
588 return 0;
589}
590
591static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
592{
593 atomic_inc(&sbi->nr_pages[count_type]);
594 F2FS_SET_SB_DIRT(sbi);
595}
596
597static inline void inode_inc_dirty_dents(struct inode *inode)
598{
599 atomic_inc(&F2FS_I(inode)->dirty_dents);
600}
601
602static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
603{
604 atomic_dec(&sbi->nr_pages[count_type]);
605}
606
607static inline void inode_dec_dirty_dents(struct inode *inode)
608{
609 atomic_dec(&F2FS_I(inode)->dirty_dents);
610}
611
612static inline int get_pages(struct f2fs_sb_info *sbi, int count_type)
613{
614 return atomic_read(&sbi->nr_pages[count_type]);
615}
616
5ac206cf
NJ		 617static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
618{
619 unsigned int pages_per_sec = sbi->segs_per_sec *
620 (1 << sbi->log_blocks_per_seg);
621 return ((get_pages(sbi, block_type) + pages_per_sec - 1)
622 >> sbi->log_blocks_per_seg) / sbi->segs_per_sec;
623}
624
39a53e0c
JK		 625static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
626{
627 block_t ret;
628 spin_lock(&sbi->stat_lock);
629 ret = sbi->total_valid_block_count;
630 spin_unlock(&sbi->stat_lock);
631 return ret;
632}
633
634static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
635{
636 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
637
638 /* return NAT or SIT bitmap */
639 if (flag == NAT_BITMAP)
640 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
641 else if (flag == SIT_BITMAP)
642 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
643
644 return 0;
645}
646
647static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
648{
649 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
25ca923b
JK		 650 int offset = (flag == NAT_BITMAP) ?
651 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
39a53e0c
JK		 652 return &ckpt->sit_nat_version_bitmap + offset;
653}
654
655static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
656{
657 block_t start_addr;
658 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
d71b5564 659 unsigned long long ckpt_version = cur_cp_version(ckpt);
39a53e0c 660
25ca923b 661 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
39a53e0c
JK		 662
663 /*
664 * odd numbered checkpoint should at cp segment 0
665 * and even segent must be at cp segment 1
666 */
667 if (!(ckpt_version & 1))
668 start_addr += sbi->blocks_per_seg;
669
670 return start_addr;
671}
672
673static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
674{
675 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
676}
677
678static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
679 struct inode *inode,
680 unsigned int count)
681{
682 block_t valid_block_count;
683 unsigned int valid_node_count;
684
685 spin_lock(&sbi->stat_lock);
686
687 valid_block_count = sbi->total_valid_block_count + (block_t)count;
688 sbi->alloc_valid_block_count += (block_t)count;
689 valid_node_count = sbi->total_valid_node_count + count;
690
691 if (valid_block_count > sbi->user_block_count) {
692 spin_unlock(&sbi->stat_lock);
693 return false;
694 }
695
696 if (valid_node_count > sbi->total_node_count) {
697 spin_unlock(&sbi->stat_lock);
698 return false;
699 }
700
701 if (inode)
702 inode->i_blocks += count;
703 sbi->total_valid_node_count = valid_node_count;
704 sbi->total_valid_block_count = valid_block_count;
705 spin_unlock(&sbi->stat_lock);
706
707 return true;
708}
709
710static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
711 struct inode *inode,
712 unsigned int count)
713{
714 spin_lock(&sbi->stat_lock);
715
716 BUG_ON(sbi->total_valid_block_count < count);
717 BUG_ON(sbi->total_valid_node_count < count);
718 BUG_ON(inode->i_blocks < count);
719
720 inode->i_blocks -= count;
721 sbi->total_valid_node_count -= count;
722 sbi->total_valid_block_count -= (block_t)count;
723
724 spin_unlock(&sbi->stat_lock);
725}
726
727static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
728{
729 unsigned int ret;
730 spin_lock(&sbi->stat_lock);
731 ret = sbi->total_valid_node_count;
732 spin_unlock(&sbi->stat_lock);
733 return ret;
734}
735
736static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
737{
738 spin_lock(&sbi->stat_lock);
739 BUG_ON(sbi->total_valid_inode_count == sbi->total_node_count);
740 sbi->total_valid_inode_count++;
741 spin_unlock(&sbi->stat_lock);
742}
743
744static inline int dec_valid_inode_count(struct f2fs_sb_info *sbi)
745{
746 spin_lock(&sbi->stat_lock);
747 BUG_ON(!sbi->total_valid_inode_count);
748 sbi->total_valid_inode_count--;
749 spin_unlock(&sbi->stat_lock);
750 return 0;
751}
752
753static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi)
754{
755 unsigned int ret;
756 spin_lock(&sbi->stat_lock);
757 ret = sbi->total_valid_inode_count;
758 spin_unlock(&sbi->stat_lock);
759 return ret;
760}
761
762static inline void f2fs_put_page(struct page *page, int unlock)
763{
764 if (!page || IS_ERR(page))
765 return;
766
767 if (unlock) {
768 BUG_ON(!PageLocked(page));
769 unlock_page(page);
770 }
771 page_cache_release(page);
772}
773
774static inline void f2fs_put_dnode(struct dnode_of_data *dn)
775{
776 if (dn->node_page)
777 f2fs_put_page(dn->node_page, 1);
778 if (dn->inode_page && dn->node_page != dn->inode_page)
779 f2fs_put_page(dn->inode_page, 0);
780 dn->node_page = NULL;
781 dn->inode_page = NULL;
782}
783
784static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
785 size_t size, void (*ctor)(void *))
786{
787 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, ctor);
788}
789
790#define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
791
792static inline bool IS_INODE(struct page *page)
793{
45590710 794 struct f2fs_node *p = F2FS_NODE(page);
39a53e0c
JK		 795 return RAW_IS_INODE(p);
796}
797
798static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
799{
800 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
801}
802
803static inline block_t datablock_addr(struct page *node_page,
804 unsigned int offset)
805{
806 struct f2fs_node *raw_node;
807 __le32 *addr_array;
45590710 808 raw_node = F2FS_NODE(node_page);
39a53e0c
JK		 809 addr_array = blkaddr_in_node(raw_node);
810 return le32_to_cpu(addr_array[offset]);
811}
812
813static inline int f2fs_test_bit(unsigned int nr, char *addr)
814{
815 int mask;
816
817 addr += (nr >> 3);
818 mask = 1 << (7 - (nr & 0x07));
819 return mask & *addr;
820}
821
822static inline int f2fs_set_bit(unsigned int nr, char *addr)
823{
824 int mask;
825 int ret;
826
827 addr += (nr >> 3);
828 mask = 1 << (7 - (nr & 0x07));
829 ret = mask & *addr;
830 *addr |= mask;
831 return ret;
832}
833
834static inline int f2fs_clear_bit(unsigned int nr, char *addr)
835{
836 int mask;
837 int ret;
838
839 addr += (nr >> 3);
840 mask = 1 << (7 - (nr & 0x07));
841 ret = mask & *addr;
842 *addr &= ~mask;
843 return ret;
844}
845
846/* used for f2fs_inode_info->flags */
847enum {
848 FI_NEW_INODE, /* indicate newly allocated inode */
b3783873 849 FI_DIRTY_INODE, /* indicate inode is dirty or not */
39a53e0c
JK		 850 FI_INC_LINK, /* need to increment i_nlink */
851 FI_ACL_MODE, /* indicate acl mode */
852 FI_NO_ALLOC, /* should not allocate any blocks */
699489bb 853 FI_UPDATE_DIR, /* should update inode block for consistency */
74d0b917 854 FI_DELAY_IPUT, /* used for the recovery */
444c580f 855 FI_INLINE_XATTR, /* used for inline xattr */
39a53e0c
JK		 856};
857
858static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag)
859{
860 set_bit(flag, &fi->flags);
861}
862
863static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag)
864{
865 return test_bit(flag, &fi->flags);
866}
867
868static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag)
869{
870 clear_bit(flag, &fi->flags);
871}
872
873static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode)
874{
875 fi->i_acl_mode = mode;
876 set_inode_flag(fi, FI_ACL_MODE);
877}
878
879static inline int cond_clear_inode_flag(struct f2fs_inode_info *fi, int flag)
880{
881 if (is_inode_flag_set(fi, FI_ACL_MODE)) {
882 clear_inode_flag(fi, FI_ACL_MODE);
883 return 1;
884 }
885 return 0;
886}
887
444c580f
JK		 888static inline void get_inline_info(struct f2fs_inode_info *fi,
889 struct f2fs_inode *ri)
890{
891 if (ri->i_inline & F2FS_INLINE_XATTR)
892 set_inode_flag(fi, FI_INLINE_XATTR);
893}
894
895static inline void set_raw_inline(struct f2fs_inode_info *fi,
896 struct f2fs_inode *ri)
897{
898 ri->i_inline = 0;
899
900 if (is_inode_flag_set(fi, FI_INLINE_XATTR))
901 ri->i_inline |= F2FS_INLINE_XATTR;
902}
903
de93653f
JK		 904static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi)
905{
906 if (is_inode_flag_set(fi, FI_INLINE_XATTR))
907 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
908 return DEF_ADDRS_PER_INODE;
909}
910
65985d93
JK		 911static inline void *inline_xattr_addr(struct page *page)
912{
913 struct f2fs_inode *ri;
914 ri = (struct f2fs_inode *)page_address(page);
915 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
916 F2FS_INLINE_XATTR_ADDRS]);
917}
918
919static inline int inline_xattr_size(struct inode *inode)
920{
921 if (is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR))
922 return F2FS_INLINE_XATTR_ADDRS << 2;
923 else
924 return 0;
925}
926
77888c1e
JK		 927static inline int f2fs_readonly(struct super_block *sb)
928{
929 return sb->s_flags & MS_RDONLY;
930}
931
39a53e0c
JK		 932/*
933 * file.c
934 */
935int f2fs_sync_file(struct file *, loff_t, loff_t, int);
936void truncate_data_blocks(struct dnode_of_data *);
937void f2fs_truncate(struct inode *);
2d4d9fb5 938int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
39a53e0c
JK		 939int f2fs_setattr(struct dentry *, struct iattr *);
940int truncate_hole(struct inode *, pgoff_t, pgoff_t);
b292dcab 941int truncate_data_blocks_range(struct dnode_of_data *, int);
39a53e0c 942long f2fs_ioctl(struct file *, unsigned int, unsigned long);
e9750824 943long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long);
39a53e0c
JK		 944
945/*
946 * inode.c
947 */
948void f2fs_set_inode_flags(struct inode *);
39a53e0c
JK		 949struct inode *f2fs_iget(struct super_block *, unsigned long);
950void update_inode(struct inode *, struct page *);
39936837 951int update_inode_page(struct inode *);
39a53e0c
JK		 952int f2fs_write_inode(struct inode *, struct writeback_control *);
953void f2fs_evict_inode(struct inode *);
954
955/*
956 * namei.c
957 */
958struct dentry *f2fs_get_parent(struct dentry *child);
959
960/*
961 * dir.c
962 */
963struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *,
964 struct page **);
965struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
966ino_t f2fs_inode_by_name(struct inode *, struct qstr *);
967void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
968 struct page *, struct inode *);
1cd14caf 969int update_dent_inode(struct inode *, const struct qstr *);
b7f7a5e0 970int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *);
39a53e0c
JK		 971void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *);
972int f2fs_make_empty(struct inode *, struct inode *);
973bool f2fs_empty_dir(struct inode *);
974
b7f7a5e0
AV		 975static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
976{
977 return __f2fs_add_link(dentry->d_parent->d_inode, &dentry->d_name,
978 inode);
979}
980
39a53e0c
JK		 981/*
982 * super.c
983 */
984int f2fs_sync_fs(struct super_block *, int);
a07ef784
NJ		 985extern __printf(3, 4)
986void f2fs_msg(struct super_block *, const char *, const char *, ...);
39a53e0c
JK		 987
988/*
989 * hash.c
990 */
9836b8b9 991f2fs_hash_t f2fs_dentry_hash(const char *, size_t);
39a53e0c
JK		 992
993/*
994 * node.c
995 */
996struct dnode_of_data;
997struct node_info;
998
999int is_checkpointed_node(struct f2fs_sb_info *, nid_t);
1000void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
1001int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);
1002int truncate_inode_blocks(struct inode *, pgoff_t);
4f16fb0f 1003int truncate_xattr_node(struct inode *, struct page *);
39a53e0c 1004int remove_inode_page(struct inode *);
44a83ff6 1005struct page *new_inode_page(struct inode *, const struct qstr *);
8ae8f162 1006struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *);
39a53e0c
JK		 1007void ra_node_page(struct f2fs_sb_info *, nid_t);
1008struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
1009struct page *get_node_page_ra(struct page *, int);
1010void sync_inode_page(struct dnode_of_data *);
1011int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *);
1012bool alloc_nid(struct f2fs_sb_info *, nid_t *);
1013void alloc_nid_done(struct f2fs_sb_info *, nid_t);
1014void alloc_nid_failed(struct f2fs_sb_info *, nid_t);
1015void recover_node_page(struct f2fs_sb_info *, struct page *,
1016 struct f2fs_summary *, struct node_info *, block_t);
1017int recover_inode_page(struct f2fs_sb_info *, struct page *);
1018int restore_node_summary(struct f2fs_sb_info *, unsigned int,
1019 struct f2fs_summary_block *);
1020void flush_nat_entries(struct f2fs_sb_info *);
1021int build_node_manager(struct f2fs_sb_info *);
1022void destroy_node_manager(struct f2fs_sb_info *);
6e6093a8 1023int __init create_node_manager_caches(void);
39a53e0c
JK		 1024void destroy_node_manager_caches(void);
1025
1026/*
1027 * segment.c
1028 */
1029void f2fs_balance_fs(struct f2fs_sb_info *);
1030void invalidate_blocks(struct f2fs_sb_info *, block_t);
39a53e0c
JK		 1031void clear_prefree_segments(struct f2fs_sb_info *);
1032int npages_for_summary_flush(struct f2fs_sb_info *);
1033void allocate_new_segments(struct f2fs_sb_info *);
1034struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
3cd8a239 1035struct bio *f2fs_bio_alloc(struct block_device *, int);
a569469e
JX		 1036void f2fs_submit_bio(struct f2fs_sb_info *, enum page_type, bool);
1037void f2fs_wait_on_page_writeback(struct page *, enum page_type, bool);
577e3495 1038void write_meta_page(struct f2fs_sb_info *, struct page *);
39a53e0c
JK		 1039void write_node_page(struct f2fs_sb_info *, struct page *, unsigned int,
1040 block_t, block_t *);
1041void write_data_page(struct inode *, struct page *, struct dnode_of_data*,
1042 block_t, block_t *);
1043void rewrite_data_page(struct f2fs_sb_info *, struct page *, block_t);
1044void recover_data_page(struct f2fs_sb_info *, struct page *,
1045 struct f2fs_summary *, block_t, block_t);
1046void rewrite_node_page(struct f2fs_sb_info *, struct page *,
1047 struct f2fs_summary *, block_t, block_t);
1048void write_data_summaries(struct f2fs_sb_info *, block_t);
1049void write_node_summaries(struct f2fs_sb_info *, block_t);
1050int lookup_journal_in_cursum(struct f2fs_summary_block *,
1051 int, unsigned int, int);
1052void flush_sit_entries(struct f2fs_sb_info *);
1053int build_segment_manager(struct f2fs_sb_info *);
39a53e0c
JK		 1054void destroy_segment_manager(struct f2fs_sb_info *);
1055
1056/*
1057 * checkpoint.c
1058 */
1059struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
1060struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
1061long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
cbd56e7d
JK		 1062int acquire_orphan_inode(struct f2fs_sb_info *);
1063void release_orphan_inode(struct f2fs_sb_info *);
39a53e0c
JK		 1064void add_orphan_inode(struct f2fs_sb_info *, nid_t);
1065void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
1066int recover_orphan_inodes(struct f2fs_sb_info *);
1067int get_valid_checkpoint(struct f2fs_sb_info *);
1068void set_dirty_dir_page(struct inode *, struct page *);
5deb8267 1069void add_dirty_dir_inode(struct inode *);
39a53e0c 1070void remove_dirty_dir_inode(struct inode *);
74d0b917 1071struct inode *check_dirty_dir_inode(struct f2fs_sb_info *, nid_t);
39a53e0c 1072void sync_dirty_dir_inodes(struct f2fs_sb_info *);
43727527 1073void write_checkpoint(struct f2fs_sb_info *, bool);
39a53e0c 1074void init_orphan_info(struct f2fs_sb_info *);
6e6093a8 1075int __init create_checkpoint_caches(void);
39a53e0c
JK		 1076void destroy_checkpoint_caches(void);
1077
1078/*
1079 * data.c
1080 */
1081int reserve_new_block(struct dnode_of_data *);
1082void update_extent_cache(block_t, struct dnode_of_data *);
c718379b 1083struct page *find_data_page(struct inode *, pgoff_t, bool);
39a53e0c 1084struct page *get_lock_data_page(struct inode *, pgoff_t);
64aa7ed9 1085struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
39a53e0c
JK		 1086int f2fs_readpage(struct f2fs_sb_info *, struct page *, block_t, int);
1087int do_write_data_page(struct page *);
1088
1089/*
1090 * gc.c
1091 */
1092int start_gc_thread(struct f2fs_sb_info *);
1093void stop_gc_thread(struct f2fs_sb_info *);
de93653f 1094block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *);
408e9375 1095int f2fs_gc(struct f2fs_sb_info *);
39a53e0c 1096void build_gc_manager(struct f2fs_sb_info *);
6e6093a8 1097int __init create_gc_caches(void);
39a53e0c
JK		 1098void destroy_gc_caches(void);
1099
1100/*
1101 * recovery.c
1102 */
6ead1142 1103int recover_fsync_data(struct f2fs_sb_info *);
39a53e0c
JK		 1104bool space_for_roll_forward(struct f2fs_sb_info *);
1105
1106/*
1107 * debug.c
1108 */
1109#ifdef CONFIG_F2FS_STAT_FS
1110struct f2fs_stat_info {
1111 struct list_head stat_list;
1112 struct f2fs_sb_info *sbi;
1113 struct mutex stat_lock;
1114 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
1115 int main_area_segs, main_area_sections, main_area_zones;
1116 int hit_ext, total_ext;
1117 int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta;
1118 int nats, sits, fnids;
1119 int total_count, utilization;
1120 int bg_gc;
1121 unsigned int valid_count, valid_node_count, valid_inode_count;
1122 unsigned int bimodal, avg_vblocks;
1123 int util_free, util_valid, util_invalid;
1124 int rsvd_segs, overp_segs;
1125 int dirty_count, node_pages, meta_pages;
1126 int prefree_count, call_count;
1127 int tot_segs, node_segs, data_segs, free_segs, free_secs;
1128 int tot_blks, data_blks, node_blks;
1129 int curseg[NR_CURSEG_TYPE];
1130 int cursec[NR_CURSEG_TYPE];
1131 int curzone[NR_CURSEG_TYPE];
1132
1133 unsigned int segment_count[2];
1134 unsigned int block_count[2];
1135 unsigned base_mem, cache_mem;
1136};
1137
963d4f7d
GZ		 1138static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
1139{
1140 return (struct f2fs_stat_info*)sbi->stat_info;
1141}
1142
39a53e0c
JK		 1143#define stat_inc_call_count(si) ((si)->call_count++)
1144
1145#define stat_inc_seg_count(sbi, type) \
1146 do { \
963d4f7d 1147 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
39a53e0c
JK		 1148 (si)->tot_segs++; \
1149 if (type == SUM_TYPE_DATA) \
1150 si->data_segs++; \
1151 else \
1152 si->node_segs++; \
1153 } while (0)
1154
1155#define stat_inc_tot_blk_count(si, blks) \
1156 (si->tot_blks += (blks))
1157
1158#define stat_inc_data_blk_count(sbi, blks) \
1159 do { \
963d4f7d 1160 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
39a53e0c
JK		 1161 stat_inc_tot_blk_count(si, blks); \
1162 si->data_blks += (blks); \
1163 } while (0)
1164
1165#define stat_inc_node_blk_count(sbi, blks) \
1166 do { \
963d4f7d 1167 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
39a53e0c
JK		 1168 stat_inc_tot_blk_count(si, blks); \
1169 si->node_blks += (blks); \
1170 } while (0)
1171
1172int f2fs_build_stats(struct f2fs_sb_info *);
1173void f2fs_destroy_stats(struct f2fs_sb_info *);
6e6093a8 1174void __init f2fs_create_root_stats(void);
4589d25d 1175void f2fs_destroy_root_stats(void);
39a53e0c
JK		 1176#else
1177#define stat_inc_call_count(si)
1178#define stat_inc_seg_count(si, type)
1179#define stat_inc_tot_blk_count(si, blks)
1180#define stat_inc_data_blk_count(si, blks)
1181#define stat_inc_node_blk_count(sbi, blks)
1182
1183static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
1184static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
6e6093a8 1185static inline void __init f2fs_create_root_stats(void) { }
4589d25d 1186static inline void f2fs_destroy_root_stats(void) { }
39a53e0c
JK		 1187#endif
1188
1189extern const struct file_operations f2fs_dir_operations;
1190extern const struct file_operations f2fs_file_operations;
1191extern const struct inode_operations f2fs_file_inode_operations;
1192extern const struct address_space_operations f2fs_dblock_aops;
1193extern const struct address_space_operations f2fs_node_aops;
1194extern const struct address_space_operations f2fs_meta_aops;
1195extern const struct inode_operations f2fs_dir_inode_operations;
1196extern const struct inode_operations f2fs_symlink_inode_operations;
1197extern const struct inode_operations f2fs_special_inode_operations;
1198#endif