4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
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.
14 #include <linux/types.h>
15 #include <linux/page-flags.h>
16 #include <linux/buffer_head.h>
17 #include <linux/slab.h>
18 #include <linux/crc32.h>
19 #include <linux/magic.h>
20 #include <linux/kobject.h>
21 #include <linux/sched.h>
23 #ifdef CONFIG_F2FS_CHECK_FS
24 #define f2fs_bug_on(condition) BUG_ON(condition)
25 #define f2fs_down_write(x, y) down_write_nest_lock(x, y)
27 #define f2fs_bug_on(condition)
28 #define f2fs_down_write(x, y) down_write(x)
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
41 #define F2FS_MOUNT_INLINE_XATTR 0x00000080
42 #define F2FS_MOUNT_INLINE_DATA 0x00000100
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)
48 #define ver_after(a, b) (typecheck(unsigned long long, a) && \
49 typecheck(unsigned long long, b) && \
50 ((long long)((a) - (b)) > 0))
52 typedef u32 block_t
; /*
53 * should not change u32, since it is the on-disk block
54 * address format, __le32.
58 struct f2fs_mount_info
{
62 #define CRCPOLY_LE 0xedb88320
64 static inline __u32
f2fs_crc32(void *buf
, size_t len
)
66 unsigned char *p
= (unsigned char *)buf
;
67 __u32 crc
= F2FS_SUPER_MAGIC
;
72 for (i
= 0; i
< 8; i
++)
73 crc
= (crc
>> 1) ^ ((crc
& 1) ? CRCPOLY_LE
: 0);
78 static inline bool f2fs_crc_valid(__u32 blk_crc
, void *buf
, size_t buf_size
)
80 return f2fs_crc32(buf
, buf_size
) == blk_crc
;
84 * For checkpoint manager
92 * For CP/NAT/SIT/SSA readahead
101 /* for the list of orphan inodes */
102 struct orphan_inode_entry
{
103 struct list_head list
; /* list head */
104 nid_t ino
; /* inode number */
107 /* for the list of directory inodes */
108 struct dir_inode_entry
{
109 struct list_head list
; /* list head */
110 struct inode
*inode
; /* vfs inode pointer */
113 /* for the list of blockaddresses to be discarded */
114 struct discard_entry
{
115 struct list_head list
; /* list head */
116 block_t blkaddr
; /* block address to be discarded */
117 int len
; /* # of consecutive blocks of the discard */
120 /* for the list of fsync inodes, used only during recovery */
121 struct fsync_inode_entry
{
122 struct list_head list
; /* list head */
123 struct inode
*inode
; /* vfs inode pointer */
124 block_t blkaddr
; /* block address locating the last inode */
127 #define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
128 #define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
130 #define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
131 #define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
132 #define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
133 #define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
135 static inline int update_nats_in_cursum(struct f2fs_summary_block
*rs
, int i
)
137 int before
= nats_in_cursum(rs
);
138 rs
->n_nats
= cpu_to_le16(before
+ i
);
142 static inline int update_sits_in_cursum(struct f2fs_summary_block
*rs
, int i
)
144 int before
= sits_in_cursum(rs
);
145 rs
->n_sits
= cpu_to_le16(before
+ i
);
152 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
153 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
155 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
157 * ioctl commands in 32 bit emulation
159 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
160 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
164 * For INODE and NODE manager
167 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
168 * as its node offset to distinguish from index node blocks.
169 * But some bits are used to mark the node block.
171 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
174 ALLOC_NODE
, /* allocate a new node page if needed */
175 LOOKUP_NODE
, /* look up a node without readahead */
177 * look up a node with readahead called
182 #define F2FS_LINK_MAX 32000 /* maximum link count per file */
184 /* for in-memory extent cache entry */
185 #define F2FS_MIN_EXTENT_LEN 16 /* minimum extent length */
188 rwlock_t ext_lock
; /* rwlock for consistency */
189 unsigned int fofs
; /* start offset in a file */
190 u32 blk_addr
; /* start block address of the extent */
191 unsigned int len
; /* length of the extent */
195 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
197 #define FADVISE_COLD_BIT 0x01
198 #define FADVISE_LOST_PINO_BIT 0x02
200 #define DEF_DIR_LEVEL 0
202 struct f2fs_inode_info
{
203 struct inode vfs_inode
; /* serve a vfs inode */
204 unsigned long i_flags
; /* keep an inode flags for ioctl */
205 unsigned char i_advise
; /* use to give file attribute hints */
206 unsigned char i_dir_level
; /* use for dentry level for large dir */
207 unsigned int i_current_depth
; /* use only in directory structure */
208 unsigned int i_pino
; /* parent inode number */
209 umode_t i_acl_mode
; /* keep file acl mode temporarily */
211 /* Use below internally in f2fs*/
212 unsigned long flags
; /* use to pass per-file flags */
213 atomic_t dirty_dents
; /* # of dirty dentry pages */
214 f2fs_hash_t chash
; /* hash value of given file name */
215 unsigned int clevel
; /* maximum level of given file name */
216 nid_t i_xattr_nid
; /* node id that contains xattrs */
217 unsigned long long xattr_ver
; /* cp version of xattr modification */
218 struct extent_info ext
; /* in-memory extent cache entry */
221 static inline void get_extent_info(struct extent_info
*ext
,
222 struct f2fs_extent i_ext
)
224 write_lock(&ext
->ext_lock
);
225 ext
->fofs
= le32_to_cpu(i_ext
.fofs
);
226 ext
->blk_addr
= le32_to_cpu(i_ext
.blk_addr
);
227 ext
->len
= le32_to_cpu(i_ext
.len
);
228 write_unlock(&ext
->ext_lock
);
231 static inline void set_raw_extent(struct extent_info
*ext
,
232 struct f2fs_extent
*i_ext
)
234 read_lock(&ext
->ext_lock
);
235 i_ext
->fofs
= cpu_to_le32(ext
->fofs
);
236 i_ext
->blk_addr
= cpu_to_le32(ext
->blk_addr
);
237 i_ext
->len
= cpu_to_le32(ext
->len
);
238 read_unlock(&ext
->ext_lock
);
241 struct f2fs_nm_info
{
242 block_t nat_blkaddr
; /* base disk address of NAT */
243 nid_t max_nid
; /* maximum possible node ids */
244 nid_t next_scan_nid
; /* the next nid to be scanned */
246 /* NAT cache management */
247 struct radix_tree_root nat_root
;/* root of the nat entry cache */
248 rwlock_t nat_tree_lock
; /* protect nat_tree_lock */
249 unsigned int nat_cnt
; /* the # of cached nat entries */
250 struct list_head nat_entries
; /* cached nat entry list (clean) */
251 struct list_head dirty_nat_entries
; /* cached nat entry list (dirty) */
253 /* free node ids management */
254 struct radix_tree_root free_nid_root
;/* root of the free_nid cache */
255 struct list_head free_nid_list
; /* a list for free nids */
256 spinlock_t free_nid_list_lock
; /* protect free nid list */
257 unsigned int fcnt
; /* the number of free node id */
258 struct mutex build_lock
; /* lock for build free nids */
261 char *nat_bitmap
; /* NAT bitmap pointer */
262 int bitmap_size
; /* bitmap size */
266 * this structure is used as one of function parameters.
267 * all the information are dedicated to a given direct node block determined
268 * by the data offset in a file.
270 struct dnode_of_data
{
271 struct inode
*inode
; /* vfs inode pointer */
272 struct page
*inode_page
; /* its inode page, NULL is possible */
273 struct page
*node_page
; /* cached direct node page */
274 nid_t nid
; /* node id of the direct node block */
275 unsigned int ofs_in_node
; /* data offset in the node page */
276 bool inode_page_locked
; /* inode page is locked or not */
277 block_t data_blkaddr
; /* block address of the node block */
280 static inline void set_new_dnode(struct dnode_of_data
*dn
, struct inode
*inode
,
281 struct page
*ipage
, struct page
*npage
, nid_t nid
)
283 memset(dn
, 0, sizeof(*dn
));
285 dn
->inode_page
= ipage
;
286 dn
->node_page
= npage
;
293 * By default, there are 6 active log areas across the whole main area.
294 * When considering hot and cold data separation to reduce cleaning overhead,
295 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
297 * In the current design, you should not change the numbers intentionally.
298 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
299 * logs individually according to the underlying devices. (default: 6)
300 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
301 * data and 8 for node logs.
303 #define NR_CURSEG_DATA_TYPE (3)
304 #define NR_CURSEG_NODE_TYPE (3)
305 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
308 CURSEG_HOT_DATA
= 0, /* directory entry blocks */
309 CURSEG_WARM_DATA
, /* data blocks */
310 CURSEG_COLD_DATA
, /* multimedia or GCed data blocks */
311 CURSEG_HOT_NODE
, /* direct node blocks of directory files */
312 CURSEG_WARM_NODE
, /* direct node blocks of normal files */
313 CURSEG_COLD_NODE
, /* indirect node blocks */
317 struct f2fs_sm_info
{
318 struct sit_info
*sit_info
; /* whole segment information */
319 struct free_segmap_info
*free_info
; /* free segment information */
320 struct dirty_seglist_info
*dirty_info
; /* dirty segment information */
321 struct curseg_info
*curseg_array
; /* active segment information */
323 struct list_head wblist_head
; /* list of under-writeback pages */
324 spinlock_t wblist_lock
; /* lock for checkpoint */
326 block_t seg0_blkaddr
; /* block address of 0'th segment */
327 block_t main_blkaddr
; /* start block address of main area */
328 block_t ssa_blkaddr
; /* start block address of SSA area */
330 unsigned int segment_count
; /* total # of segments */
331 unsigned int main_segments
; /* # of segments in main area */
332 unsigned int reserved_segments
; /* # of reserved segments */
333 unsigned int ovp_segments
; /* # of overprovision segments */
335 /* a threshold to reclaim prefree segments */
336 unsigned int rec_prefree_segments
;
338 /* for small discard management */
339 struct list_head discard_list
; /* 4KB discard list */
340 int nr_discards
; /* # of discards in the list */
341 int max_discards
; /* max. discards to be issued */
343 unsigned int ipu_policy
; /* in-place-update policy */
344 unsigned int min_ipu_util
; /* in-place-update threshold */
351 * COUNT_TYPE for monitoring
353 * f2fs monitors the number of several block types such as on-writeback,
354 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
365 * The below are the page types of bios used in submti_bio().
366 * The available types are:
367 * DATA User data pages. It operates as async mode.
368 * NODE Node pages. It operates as async mode.
369 * META FS metadata pages such as SIT, NAT, CP.
370 * NR_PAGE_TYPE The number of page types.
371 * META_FLUSH Make sure the previous pages are written
372 * with waiting the bio's completion
373 * ... Only can be used with META.
375 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
384 struct f2fs_io_info
{
385 enum page_type type
; /* contains DATA/NODE/META/META_FLUSH */
386 int rw
; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
389 #define is_read_io(rw) (((rw) & 1) == READ)
390 struct f2fs_bio_info
{
391 struct f2fs_sb_info
*sbi
; /* f2fs superblock */
392 struct bio
*bio
; /* bios to merge */
393 sector_t last_block_in_bio
; /* last block number */
394 struct f2fs_io_info fio
; /* store buffered io info. */
395 struct mutex io_mutex
; /* mutex for bio */
398 struct f2fs_sb_info
{
399 struct super_block
*sb
; /* pointer to VFS super block */
400 struct proc_dir_entry
*s_proc
; /* proc entry */
401 struct buffer_head
*raw_super_buf
; /* buffer head of raw sb */
402 struct f2fs_super_block
*raw_super
; /* raw super block pointer */
403 int s_dirty
; /* dirty flag for checkpoint */
405 /* for node-related operations */
406 struct f2fs_nm_info
*nm_info
; /* node manager */
407 struct inode
*node_inode
; /* cache node blocks */
409 /* for segment-related operations */
410 struct f2fs_sm_info
*sm_info
; /* segment manager */
412 /* for bio operations */
413 struct f2fs_bio_info read_io
; /* for read bios */
414 struct f2fs_bio_info write_io
[NR_PAGE_TYPE
]; /* for write bios */
415 struct completion
*wait_io
; /* for completion bios */
418 struct f2fs_checkpoint
*ckpt
; /* raw checkpoint pointer */
419 struct inode
*meta_inode
; /* cache meta blocks */
420 struct mutex cp_mutex
; /* checkpoint procedure lock */
421 struct rw_semaphore cp_rwsem
; /* blocking FS operations */
422 struct mutex node_write
; /* locking node writes */
423 struct mutex writepages
; /* mutex for writepages() */
424 bool por_doing
; /* recovery is doing or not */
425 wait_queue_head_t cp_wait
;
427 /* for orphan inode management */
428 struct list_head orphan_inode_list
; /* orphan inode list */
429 spinlock_t orphan_inode_lock
; /* for orphan inode list */
430 unsigned int n_orphans
; /* # of orphan inodes */
431 unsigned int max_orphans
; /* max orphan inodes */
433 /* for directory inode management */
434 struct list_head dir_inode_list
; /* dir inode list */
435 spinlock_t dir_inode_lock
; /* for dir inode list lock */
437 /* basic file system units */
438 unsigned int log_sectors_per_block
; /* log2 sectors per block */
439 unsigned int log_blocksize
; /* log2 block size */
440 unsigned int blocksize
; /* block size */
441 unsigned int root_ino_num
; /* root inode number*/
442 unsigned int node_ino_num
; /* node inode number*/
443 unsigned int meta_ino_num
; /* meta inode number*/
444 unsigned int log_blocks_per_seg
; /* log2 blocks per segment */
445 unsigned int blocks_per_seg
; /* blocks per segment */
446 unsigned int segs_per_sec
; /* segments per section */
447 unsigned int secs_per_zone
; /* sections per zone */
448 unsigned int total_sections
; /* total section count */
449 unsigned int total_node_count
; /* total node block count */
450 unsigned int total_valid_node_count
; /* valid node block count */
451 unsigned int total_valid_inode_count
; /* valid inode count */
452 int active_logs
; /* # of active logs */
453 int dir_level
; /* directory level */
455 block_t user_block_count
; /* # of user blocks */
456 block_t total_valid_block_count
; /* # of valid blocks */
457 block_t alloc_valid_block_count
; /* # of allocated blocks */
458 block_t last_valid_block_count
; /* for recovery */
459 u32 s_next_generation
; /* for NFS support */
460 atomic_t nr_pages
[NR_COUNT_TYPE
]; /* # of pages, see count_type */
462 struct f2fs_mount_info mount_opt
; /* mount options */
464 /* for cleaning operations */
465 struct mutex gc_mutex
; /* mutex for GC */
466 struct f2fs_gc_kthread
*gc_thread
; /* GC thread */
467 unsigned int cur_victim_sec
; /* current victim section num */
469 /* maximum # of trials to find a victim segment for SSR and GC */
470 unsigned int max_victim_search
;
473 * for stat information.
474 * one is for the LFS mode, and the other is for the SSR mode.
476 #ifdef CONFIG_F2FS_STAT_FS
477 struct f2fs_stat_info
*stat_info
; /* FS status information */
478 unsigned int segment_count
[2]; /* # of allocated segments */
479 unsigned int block_count
[2]; /* # of allocated blocks */
480 int total_hit_ext
, read_hit_ext
; /* extent cache hit ratio */
481 int inline_inode
; /* # of inline_data inodes */
482 int bg_gc
; /* background gc calls */
483 unsigned int n_dirty_dirs
; /* # of dir inodes */
485 unsigned int last_victim
[2]; /* last victim segment # */
486 spinlock_t stat_lock
; /* lock for stat operations */
488 /* For sysfs suppport */
489 struct kobject s_kobj
;
490 struct completion s_kobj_unregister
;
496 static inline struct f2fs_inode_info
*F2FS_I(struct inode
*inode
)
498 return container_of(inode
, struct f2fs_inode_info
, vfs_inode
);
501 static inline struct f2fs_sb_info
*F2FS_SB(struct super_block
*sb
)
503 return sb
->s_fs_info
;
506 static inline struct f2fs_super_block
*F2FS_RAW_SUPER(struct f2fs_sb_info
*sbi
)
508 return (struct f2fs_super_block
*)(sbi
->raw_super
);
511 static inline struct f2fs_checkpoint
*F2FS_CKPT(struct f2fs_sb_info
*sbi
)
513 return (struct f2fs_checkpoint
*)(sbi
->ckpt
);
516 static inline struct f2fs_node
*F2FS_NODE(struct page
*page
)
518 return (struct f2fs_node
*)page_address(page
);
521 static inline struct f2fs_inode
*F2FS_INODE(struct page
*page
)
523 return &((struct f2fs_node
*)page_address(page
))->i
;
526 static inline struct f2fs_nm_info
*NM_I(struct f2fs_sb_info
*sbi
)
528 return (struct f2fs_nm_info
*)(sbi
->nm_info
);
531 static inline struct f2fs_sm_info
*SM_I(struct f2fs_sb_info
*sbi
)
533 return (struct f2fs_sm_info
*)(sbi
->sm_info
);
536 static inline struct sit_info
*SIT_I(struct f2fs_sb_info
*sbi
)
538 return (struct sit_info
*)(SM_I(sbi
)->sit_info
);
541 static inline struct free_segmap_info
*FREE_I(struct f2fs_sb_info
*sbi
)
543 return (struct free_segmap_info
*)(SM_I(sbi
)->free_info
);
546 static inline struct dirty_seglist_info
*DIRTY_I(struct f2fs_sb_info
*sbi
)
548 return (struct dirty_seglist_info
*)(SM_I(sbi
)->dirty_info
);
551 static inline struct address_space
*META_MAPPING(struct f2fs_sb_info
*sbi
)
553 return sbi
->meta_inode
->i_mapping
;
556 static inline struct address_space
*NODE_MAPPING(struct f2fs_sb_info
*sbi
)
558 return sbi
->node_inode
->i_mapping
;
561 static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info
*sbi
)
566 static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info
*sbi
)
571 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint
*cp
)
573 return le64_to_cpu(cp
->checkpoint_ver
);
576 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
578 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
579 return ckpt_flags
& f
;
582 static inline void set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
584 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
586 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
589 static inline void clear_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
591 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
593 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
596 static inline void f2fs_lock_op(struct f2fs_sb_info
*sbi
)
598 down_read(&sbi
->cp_rwsem
);
601 static inline void f2fs_unlock_op(struct f2fs_sb_info
*sbi
)
603 up_read(&sbi
->cp_rwsem
);
606 static inline void f2fs_lock_all(struct f2fs_sb_info
*sbi
)
608 f2fs_down_write(&sbi
->cp_rwsem
, &sbi
->cp_mutex
);
611 static inline void f2fs_unlock_all(struct f2fs_sb_info
*sbi
)
613 up_write(&sbi
->cp_rwsem
);
617 * Check whether the given nid is within node id range.
619 static inline int check_nid_range(struct f2fs_sb_info
*sbi
, nid_t nid
)
621 WARN_ON((nid
>= NM_I(sbi
)->max_nid
));
622 if (unlikely(nid
>= NM_I(sbi
)->max_nid
))
627 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
630 * Check whether the inode has blocks or not
632 static inline int F2FS_HAS_BLOCKS(struct inode
*inode
)
634 if (F2FS_I(inode
)->i_xattr_nid
)
635 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
+ 1;
637 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
;
640 static inline bool f2fs_has_xattr_block(unsigned int ofs
)
642 return ofs
== XATTR_NODE_OFFSET
;
645 static inline bool inc_valid_block_count(struct f2fs_sb_info
*sbi
,
646 struct inode
*inode
, blkcnt_t count
)
648 block_t valid_block_count
;
650 spin_lock(&sbi
->stat_lock
);
652 sbi
->total_valid_block_count
+ (block_t
)count
;
653 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
654 spin_unlock(&sbi
->stat_lock
);
657 inode
->i_blocks
+= count
;
658 sbi
->total_valid_block_count
= valid_block_count
;
659 sbi
->alloc_valid_block_count
+= (block_t
)count
;
660 spin_unlock(&sbi
->stat_lock
);
664 static inline void dec_valid_block_count(struct f2fs_sb_info
*sbi
,
668 spin_lock(&sbi
->stat_lock
);
669 f2fs_bug_on(sbi
->total_valid_block_count
< (block_t
) count
);
670 f2fs_bug_on(inode
->i_blocks
< count
);
671 inode
->i_blocks
-= count
;
672 sbi
->total_valid_block_count
-= (block_t
)count
;
673 spin_unlock(&sbi
->stat_lock
);
676 static inline void inc_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
678 atomic_inc(&sbi
->nr_pages
[count_type
]);
679 F2FS_SET_SB_DIRT(sbi
);
682 static inline void inode_inc_dirty_dents(struct inode
*inode
)
684 inc_page_count(F2FS_SB(inode
->i_sb
), F2FS_DIRTY_DENTS
);
685 atomic_inc(&F2FS_I(inode
)->dirty_dents
);
688 static inline void dec_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
690 atomic_dec(&sbi
->nr_pages
[count_type
]);
693 static inline void inode_dec_dirty_dents(struct inode
*inode
)
695 if (!S_ISDIR(inode
->i_mode
))
698 dec_page_count(F2FS_SB(inode
->i_sb
), F2FS_DIRTY_DENTS
);
699 atomic_dec(&F2FS_I(inode
)->dirty_dents
);
702 static inline int get_pages(struct f2fs_sb_info
*sbi
, int count_type
)
704 return atomic_read(&sbi
->nr_pages
[count_type
]);
707 static inline int get_blocktype_secs(struct f2fs_sb_info
*sbi
, int block_type
)
709 unsigned int pages_per_sec
= sbi
->segs_per_sec
*
710 (1 << sbi
->log_blocks_per_seg
);
711 return ((get_pages(sbi
, block_type
) + pages_per_sec
- 1)
712 >> sbi
->log_blocks_per_seg
) / sbi
->segs_per_sec
;
715 static inline block_t
valid_user_blocks(struct f2fs_sb_info
*sbi
)
717 return sbi
->total_valid_block_count
;
720 static inline unsigned long __bitmap_size(struct f2fs_sb_info
*sbi
, int flag
)
722 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
724 /* return NAT or SIT bitmap */
725 if (flag
== NAT_BITMAP
)
726 return le32_to_cpu(ckpt
->nat_ver_bitmap_bytesize
);
727 else if (flag
== SIT_BITMAP
)
728 return le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
);
733 static inline void *__bitmap_ptr(struct f2fs_sb_info
*sbi
, int flag
)
735 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
736 int offset
= (flag
== NAT_BITMAP
) ?
737 le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
) : 0;
738 return &ckpt
->sit_nat_version_bitmap
+ offset
;
741 static inline block_t
__start_cp_addr(struct f2fs_sb_info
*sbi
)
744 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
745 unsigned long long ckpt_version
= cur_cp_version(ckpt
);
747 start_addr
= le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_blkaddr
);
750 * odd numbered checkpoint should at cp segment 0
751 * and even segent must be at cp segment 1
753 if (!(ckpt_version
& 1))
754 start_addr
+= sbi
->blocks_per_seg
;
759 static inline block_t
__start_sum_addr(struct f2fs_sb_info
*sbi
)
761 return le32_to_cpu(F2FS_CKPT(sbi
)->cp_pack_start_sum
);
764 static inline bool inc_valid_node_count(struct f2fs_sb_info
*sbi
,
767 block_t valid_block_count
;
768 unsigned int valid_node_count
;
770 spin_lock(&sbi
->stat_lock
);
772 valid_block_count
= sbi
->total_valid_block_count
+ 1;
773 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
774 spin_unlock(&sbi
->stat_lock
);
778 valid_node_count
= sbi
->total_valid_node_count
+ 1;
779 if (unlikely(valid_node_count
> sbi
->total_node_count
)) {
780 spin_unlock(&sbi
->stat_lock
);
787 sbi
->alloc_valid_block_count
++;
788 sbi
->total_valid_node_count
++;
789 sbi
->total_valid_block_count
++;
790 spin_unlock(&sbi
->stat_lock
);
795 static inline void dec_valid_node_count(struct f2fs_sb_info
*sbi
,
798 spin_lock(&sbi
->stat_lock
);
800 f2fs_bug_on(!sbi
->total_valid_block_count
);
801 f2fs_bug_on(!sbi
->total_valid_node_count
);
802 f2fs_bug_on(!inode
->i_blocks
);
805 sbi
->total_valid_node_count
--;
806 sbi
->total_valid_block_count
--;
808 spin_unlock(&sbi
->stat_lock
);
811 static inline unsigned int valid_node_count(struct f2fs_sb_info
*sbi
)
813 return sbi
->total_valid_node_count
;
816 static inline void inc_valid_inode_count(struct f2fs_sb_info
*sbi
)
818 spin_lock(&sbi
->stat_lock
);
819 f2fs_bug_on(sbi
->total_valid_inode_count
== sbi
->total_node_count
);
820 sbi
->total_valid_inode_count
++;
821 spin_unlock(&sbi
->stat_lock
);
824 static inline void dec_valid_inode_count(struct f2fs_sb_info
*sbi
)
826 spin_lock(&sbi
->stat_lock
);
827 f2fs_bug_on(!sbi
->total_valid_inode_count
);
828 sbi
->total_valid_inode_count
--;
829 spin_unlock(&sbi
->stat_lock
);
832 static inline unsigned int valid_inode_count(struct f2fs_sb_info
*sbi
)
834 return sbi
->total_valid_inode_count
;
837 static inline void f2fs_put_page(struct page
*page
, int unlock
)
843 f2fs_bug_on(!PageLocked(page
));
846 page_cache_release(page
);
849 static inline void f2fs_put_dnode(struct dnode_of_data
*dn
)
852 f2fs_put_page(dn
->node_page
, 1);
853 if (dn
->inode_page
&& dn
->node_page
!= dn
->inode_page
)
854 f2fs_put_page(dn
->inode_page
, 0);
855 dn
->node_page
= NULL
;
856 dn
->inode_page
= NULL
;
859 static inline struct kmem_cache
*f2fs_kmem_cache_create(const char *name
,
862 return kmem_cache_create(name
, size
, 0, SLAB_RECLAIM_ACCOUNT
, NULL
);
865 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache
*cachep
,
870 entry
= kmem_cache_alloc(cachep
, flags
);
879 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
881 static inline bool IS_INODE(struct page
*page
)
883 struct f2fs_node
*p
= F2FS_NODE(page
);
884 return RAW_IS_INODE(p
);
887 static inline __le32
*blkaddr_in_node(struct f2fs_node
*node
)
889 return RAW_IS_INODE(node
) ? node
->i
.i_addr
: node
->dn
.addr
;
892 static inline block_t
datablock_addr(struct page
*node_page
,
895 struct f2fs_node
*raw_node
;
897 raw_node
= F2FS_NODE(node_page
);
898 addr_array
= blkaddr_in_node(raw_node
);
899 return le32_to_cpu(addr_array
[offset
]);
902 static inline int f2fs_test_bit(unsigned int nr
, char *addr
)
907 mask
= 1 << (7 - (nr
& 0x07));
911 static inline int f2fs_set_bit(unsigned int nr
, char *addr
)
917 mask
= 1 << (7 - (nr
& 0x07));
923 static inline int f2fs_clear_bit(unsigned int nr
, char *addr
)
929 mask
= 1 << (7 - (nr
& 0x07));
935 /* used for f2fs_inode_info->flags */
937 FI_NEW_INODE
, /* indicate newly allocated inode */
938 FI_DIRTY_INODE
, /* indicate inode is dirty or not */
939 FI_INC_LINK
, /* need to increment i_nlink */
940 FI_ACL_MODE
, /* indicate acl mode */
941 FI_NO_ALLOC
, /* should not allocate any blocks */
942 FI_UPDATE_DIR
, /* should update inode block for consistency */
943 FI_DELAY_IPUT
, /* used for the recovery */
944 FI_NO_EXTENT
, /* not to use the extent cache */
945 FI_INLINE_XATTR
, /* used for inline xattr */
946 FI_INLINE_DATA
, /* used for inline data*/
949 static inline void set_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
951 set_bit(flag
, &fi
->flags
);
954 static inline int is_inode_flag_set(struct f2fs_inode_info
*fi
, int flag
)
956 return test_bit(flag
, &fi
->flags
);
959 static inline void clear_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
961 clear_bit(flag
, &fi
->flags
);
964 static inline void set_acl_inode(struct f2fs_inode_info
*fi
, umode_t mode
)
966 fi
->i_acl_mode
= mode
;
967 set_inode_flag(fi
, FI_ACL_MODE
);
970 static inline int cond_clear_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
972 if (is_inode_flag_set(fi
, FI_ACL_MODE
)) {
973 clear_inode_flag(fi
, FI_ACL_MODE
);
979 static inline void get_inline_info(struct f2fs_inode_info
*fi
,
980 struct f2fs_inode
*ri
)
982 if (ri
->i_inline
& F2FS_INLINE_XATTR
)
983 set_inode_flag(fi
, FI_INLINE_XATTR
);
984 if (ri
->i_inline
& F2FS_INLINE_DATA
)
985 set_inode_flag(fi
, FI_INLINE_DATA
);
988 static inline void set_raw_inline(struct f2fs_inode_info
*fi
,
989 struct f2fs_inode
*ri
)
993 if (is_inode_flag_set(fi
, FI_INLINE_XATTR
))
994 ri
->i_inline
|= F2FS_INLINE_XATTR
;
995 if (is_inode_flag_set(fi
, FI_INLINE_DATA
))
996 ri
->i_inline
|= F2FS_INLINE_DATA
;
999 static inline int f2fs_has_inline_xattr(struct inode
*inode
)
1001 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_XATTR
);
1004 static inline unsigned int addrs_per_inode(struct f2fs_inode_info
*fi
)
1006 if (f2fs_has_inline_xattr(&fi
->vfs_inode
))
1007 return DEF_ADDRS_PER_INODE
- F2FS_INLINE_XATTR_ADDRS
;
1008 return DEF_ADDRS_PER_INODE
;
1011 static inline void *inline_xattr_addr(struct page
*page
)
1013 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1014 return (void *)&(ri
->i_addr
[DEF_ADDRS_PER_INODE
-
1015 F2FS_INLINE_XATTR_ADDRS
]);
1018 static inline int inline_xattr_size(struct inode
*inode
)
1020 if (f2fs_has_inline_xattr(inode
))
1021 return F2FS_INLINE_XATTR_ADDRS
<< 2;
1026 static inline int f2fs_has_inline_data(struct inode
*inode
)
1028 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DATA
);
1031 static inline void *inline_data_addr(struct page
*page
)
1033 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1034 return (void *)&(ri
->i_addr
[1]);
1037 static inline int f2fs_readonly(struct super_block
*sb
)
1039 return sb
->s_flags
& MS_RDONLY
;
1042 static inline void f2fs_stop_checkpoint(struct f2fs_sb_info
*sbi
)
1044 set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1045 sbi
->sb
->s_flags
|= MS_RDONLY
;
1048 #define get_inode_mode(i) \
1049 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1050 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1055 int f2fs_sync_file(struct file
*, loff_t
, loff_t
, int);
1056 void truncate_data_blocks(struct dnode_of_data
*);
1057 int truncate_blocks(struct inode
*, u64
);
1058 void f2fs_truncate(struct inode
*);
1059 int f2fs_getattr(struct vfsmount
*, struct dentry
*, struct kstat
*);
1060 int f2fs_setattr(struct dentry
*, struct iattr
*);
1061 int truncate_hole(struct inode
*, pgoff_t
, pgoff_t
);
1062 int truncate_data_blocks_range(struct dnode_of_data
*, int);
1063 long f2fs_ioctl(struct file
*, unsigned int, unsigned long);
1064 long f2fs_compat_ioctl(struct file
*, unsigned int, unsigned long);
1069 void f2fs_set_inode_flags(struct inode
*);
1070 struct inode
*f2fs_iget(struct super_block
*, unsigned long);
1071 int try_to_free_nats(struct f2fs_sb_info
*, int);
1072 void update_inode(struct inode
*, struct page
*);
1073 void update_inode_page(struct inode
*);
1074 int f2fs_write_inode(struct inode
*, struct writeback_control
*);
1075 void f2fs_evict_inode(struct inode
*);
1080 struct dentry
*f2fs_get_parent(struct dentry
*child
);
1085 struct f2fs_dir_entry
*f2fs_find_entry(struct inode
*, struct qstr
*,
1087 struct f2fs_dir_entry
*f2fs_parent_dir(struct inode
*, struct page
**);
1088 ino_t
f2fs_inode_by_name(struct inode
*, struct qstr
*);
1089 void f2fs_set_link(struct inode
*, struct f2fs_dir_entry
*,
1090 struct page
*, struct inode
*);
1091 int update_dent_inode(struct inode
*, const struct qstr
*);
1092 int __f2fs_add_link(struct inode
*, const struct qstr
*, struct inode
*);
1093 void f2fs_delete_entry(struct f2fs_dir_entry
*, struct page
*, struct inode
*);
1094 int f2fs_make_empty(struct inode
*, struct inode
*);
1095 bool f2fs_empty_dir(struct inode
*);
1097 static inline int f2fs_add_link(struct dentry
*dentry
, struct inode
*inode
)
1099 return __f2fs_add_link(dentry
->d_parent
->d_inode
, &dentry
->d_name
,
1106 int f2fs_sync_fs(struct super_block
*, int);
1107 extern __printf(3, 4)
1108 void f2fs_msg(struct super_block
*, const char *, const char *, ...);
1113 f2fs_hash_t
f2fs_dentry_hash(const char *, size_t);
1118 struct dnode_of_data
;
1121 int is_checkpointed_node(struct f2fs_sb_info
*, nid_t
);
1122 void get_node_info(struct f2fs_sb_info
*, nid_t
, struct node_info
*);
1123 int get_dnode_of_data(struct dnode_of_data
*, pgoff_t
, int);
1124 int truncate_inode_blocks(struct inode
*, pgoff_t
);
1125 int truncate_xattr_node(struct inode
*, struct page
*);
1126 int wait_on_node_pages_writeback(struct f2fs_sb_info
*, nid_t
);
1127 void remove_inode_page(struct inode
*);
1128 struct page
*new_inode_page(struct inode
*, const struct qstr
*);
1129 struct page
*new_node_page(struct dnode_of_data
*, unsigned int, struct page
*);
1130 void ra_node_page(struct f2fs_sb_info
*, nid_t
);
1131 struct page
*get_node_page(struct f2fs_sb_info
*, pgoff_t
);
1132 struct page
*get_node_page_ra(struct page
*, int);
1133 void sync_inode_page(struct dnode_of_data
*);
1134 int sync_node_pages(struct f2fs_sb_info
*, nid_t
, struct writeback_control
*);
1135 bool alloc_nid(struct f2fs_sb_info
*, nid_t
*);
1136 void alloc_nid_done(struct f2fs_sb_info
*, nid_t
);
1137 void alloc_nid_failed(struct f2fs_sb_info
*, nid_t
);
1138 void recover_node_page(struct f2fs_sb_info
*, struct page
*,
1139 struct f2fs_summary
*, struct node_info
*, block_t
);
1140 bool recover_xattr_data(struct inode
*, struct page
*, block_t
);
1141 int recover_inode_page(struct f2fs_sb_info
*, struct page
*);
1142 int restore_node_summary(struct f2fs_sb_info
*, unsigned int,
1143 struct f2fs_summary_block
*);
1144 void flush_nat_entries(struct f2fs_sb_info
*);
1145 int build_node_manager(struct f2fs_sb_info
*);
1146 void destroy_node_manager(struct f2fs_sb_info
*);
1147 int __init
create_node_manager_caches(void);
1148 void destroy_node_manager_caches(void);
1153 void f2fs_balance_fs(struct f2fs_sb_info
*);
1154 void f2fs_balance_fs_bg(struct f2fs_sb_info
*);
1155 void invalidate_blocks(struct f2fs_sb_info
*, block_t
);
1156 void refresh_sit_entry(struct f2fs_sb_info
*, block_t
, block_t
);
1157 void clear_prefree_segments(struct f2fs_sb_info
*);
1158 int npages_for_summary_flush(struct f2fs_sb_info
*);
1159 void allocate_new_segments(struct f2fs_sb_info
*);
1160 struct page
*get_sum_page(struct f2fs_sb_info
*, unsigned int);
1161 void write_meta_page(struct f2fs_sb_info
*, struct page
*);
1162 void write_node_page(struct f2fs_sb_info
*, struct page
*,
1163 struct f2fs_io_info
*, unsigned int, block_t
, block_t
*);
1164 void write_data_page(struct page
*, struct dnode_of_data
*, block_t
*,
1165 struct f2fs_io_info
*);
1166 void rewrite_data_page(struct page
*, block_t
, struct f2fs_io_info
*);
1167 void recover_data_page(struct f2fs_sb_info
*, struct page
*,
1168 struct f2fs_summary
*, block_t
, block_t
);
1169 void rewrite_node_page(struct f2fs_sb_info
*, struct page
*,
1170 struct f2fs_summary
*, block_t
, block_t
);
1171 void allocate_data_block(struct f2fs_sb_info
*, struct page
*,
1172 block_t
, block_t
*, struct f2fs_summary
*, int);
1173 void f2fs_wait_on_page_writeback(struct page
*, enum page_type
);
1174 void write_data_summaries(struct f2fs_sb_info
*, block_t
);
1175 void write_node_summaries(struct f2fs_sb_info
*, block_t
);
1176 int lookup_journal_in_cursum(struct f2fs_summary_block
*,
1177 int, unsigned int, int);
1178 void flush_sit_entries(struct f2fs_sb_info
*);
1179 int build_segment_manager(struct f2fs_sb_info
*);
1180 void destroy_segment_manager(struct f2fs_sb_info
*);
1181 int __init
create_segment_manager_caches(void);
1182 void destroy_segment_manager_caches(void);
1187 struct page
*grab_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1188 struct page
*get_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1189 int ra_meta_pages(struct f2fs_sb_info
*, int, int, int);
1190 long sync_meta_pages(struct f2fs_sb_info
*, enum page_type
, long);
1191 int acquire_orphan_inode(struct f2fs_sb_info
*);
1192 void release_orphan_inode(struct f2fs_sb_info
*);
1193 void add_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1194 void remove_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1195 void recover_orphan_inodes(struct f2fs_sb_info
*);
1196 int get_valid_checkpoint(struct f2fs_sb_info
*);
1197 void set_dirty_dir_page(struct inode
*, struct page
*);
1198 void add_dirty_dir_inode(struct inode
*);
1199 void remove_dirty_dir_inode(struct inode
*);
1200 struct inode
*check_dirty_dir_inode(struct f2fs_sb_info
*, nid_t
);
1201 void sync_dirty_dir_inodes(struct f2fs_sb_info
*);
1202 void write_checkpoint(struct f2fs_sb_info
*, bool);
1203 void init_orphan_info(struct f2fs_sb_info
*);
1204 int __init
create_checkpoint_caches(void);
1205 void destroy_checkpoint_caches(void);
1210 void f2fs_submit_merged_bio(struct f2fs_sb_info
*, enum page_type
, int);
1211 int f2fs_submit_page_bio(struct f2fs_sb_info
*, struct page
*, block_t
, int);
1212 void f2fs_submit_page_mbio(struct f2fs_sb_info
*, struct page
*, block_t
,
1213 struct f2fs_io_info
*);
1214 int reserve_new_block(struct dnode_of_data
*);
1215 int f2fs_reserve_block(struct dnode_of_data
*, pgoff_t
);
1216 void update_extent_cache(block_t
, struct dnode_of_data
*);
1217 struct page
*find_data_page(struct inode
*, pgoff_t
, bool);
1218 struct page
*get_lock_data_page(struct inode
*, pgoff_t
);
1219 struct page
*get_new_data_page(struct inode
*, struct page
*, pgoff_t
, bool);
1220 int do_write_data_page(struct page
*, struct f2fs_io_info
*);
1225 int start_gc_thread(struct f2fs_sb_info
*);
1226 void stop_gc_thread(struct f2fs_sb_info
*);
1227 block_t
start_bidx_of_node(unsigned int, struct f2fs_inode_info
*);
1228 int f2fs_gc(struct f2fs_sb_info
*);
1229 void build_gc_manager(struct f2fs_sb_info
*);
1230 int __init
create_gc_caches(void);
1231 void destroy_gc_caches(void);
1236 int recover_fsync_data(struct f2fs_sb_info
*);
1237 bool space_for_roll_forward(struct f2fs_sb_info
*);
1242 #ifdef CONFIG_F2FS_STAT_FS
1243 struct f2fs_stat_info
{
1244 struct list_head stat_list
;
1245 struct f2fs_sb_info
*sbi
;
1246 struct mutex stat_lock
;
1247 int all_area_segs
, sit_area_segs
, nat_area_segs
, ssa_area_segs
;
1248 int main_area_segs
, main_area_sections
, main_area_zones
;
1249 int hit_ext
, total_ext
;
1250 int ndirty_node
, ndirty_dent
, ndirty_dirs
, ndirty_meta
;
1251 int nats
, sits
, fnids
;
1252 int total_count
, utilization
;
1253 int bg_gc
, inline_inode
;
1254 unsigned int valid_count
, valid_node_count
, valid_inode_count
;
1255 unsigned int bimodal
, avg_vblocks
;
1256 int util_free
, util_valid
, util_invalid
;
1257 int rsvd_segs
, overp_segs
;
1258 int dirty_count
, node_pages
, meta_pages
;
1259 int prefree_count
, call_count
, cp_count
;
1260 int tot_segs
, node_segs
, data_segs
, free_segs
, free_secs
;
1261 int tot_blks
, data_blks
, node_blks
;
1262 int curseg
[NR_CURSEG_TYPE
];
1263 int cursec
[NR_CURSEG_TYPE
];
1264 int curzone
[NR_CURSEG_TYPE
];
1266 unsigned int segment_count
[2];
1267 unsigned int block_count
[2];
1268 unsigned base_mem
, cache_mem
;
1271 static inline struct f2fs_stat_info
*F2FS_STAT(struct f2fs_sb_info
*sbi
)
1273 return (struct f2fs_stat_info
*)sbi
->stat_info
;
1276 #define stat_inc_cp_count(si) ((si)->cp_count++)
1277 #define stat_inc_call_count(si) ((si)->call_count++)
1278 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1279 #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1280 #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
1281 #define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++)
1282 #define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++)
1283 #define stat_inc_inline_inode(inode) \
1285 if (f2fs_has_inline_data(inode)) \
1286 ((F2FS_SB(inode->i_sb))->inline_inode++); \
1288 #define stat_dec_inline_inode(inode) \
1290 if (f2fs_has_inline_data(inode)) \
1291 ((F2FS_SB(inode->i_sb))->inline_inode--); \
1294 #define stat_inc_seg_type(sbi, curseg) \
1295 ((sbi)->segment_count[(curseg)->alloc_type]++)
1296 #define stat_inc_block_count(sbi, curseg) \
1297 ((sbi)->block_count[(curseg)->alloc_type]++)
1299 #define stat_inc_seg_count(sbi, type) \
1301 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1303 if (type == SUM_TYPE_DATA) \
1309 #define stat_inc_tot_blk_count(si, blks) \
1310 (si->tot_blks += (blks))
1312 #define stat_inc_data_blk_count(sbi, blks) \
1314 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1315 stat_inc_tot_blk_count(si, blks); \
1316 si->data_blks += (blks); \
1319 #define stat_inc_node_blk_count(sbi, blks) \
1321 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1322 stat_inc_tot_blk_count(si, blks); \
1323 si->node_blks += (blks); \
1326 int f2fs_build_stats(struct f2fs_sb_info
*);
1327 void f2fs_destroy_stats(struct f2fs_sb_info
*);
1328 void __init
f2fs_create_root_stats(void);
1329 void f2fs_destroy_root_stats(void);
1331 #define stat_inc_cp_count(si)
1332 #define stat_inc_call_count(si)
1333 #define stat_inc_bggc_count(si)
1334 #define stat_inc_dirty_dir(sbi)
1335 #define stat_dec_dirty_dir(sbi)
1336 #define stat_inc_total_hit(sb)
1337 #define stat_inc_read_hit(sb)
1338 #define stat_inc_inline_inode(inode)
1339 #define stat_dec_inline_inode(inode)
1340 #define stat_inc_seg_type(sbi, curseg)
1341 #define stat_inc_block_count(sbi, curseg)
1342 #define stat_inc_seg_count(si, type)
1343 #define stat_inc_tot_blk_count(si, blks)
1344 #define stat_inc_data_blk_count(si, blks)
1345 #define stat_inc_node_blk_count(sbi, blks)
1347 static inline int f2fs_build_stats(struct f2fs_sb_info
*sbi
) { return 0; }
1348 static inline void f2fs_destroy_stats(struct f2fs_sb_info
*sbi
) { }
1349 static inline void __init
f2fs_create_root_stats(void) { }
1350 static inline void f2fs_destroy_root_stats(void) { }
1353 extern const struct file_operations f2fs_dir_operations
;
1354 extern const struct file_operations f2fs_file_operations
;
1355 extern const struct inode_operations f2fs_file_inode_operations
;
1356 extern const struct address_space_operations f2fs_dblock_aops
;
1357 extern const struct address_space_operations f2fs_node_aops
;
1358 extern const struct address_space_operations f2fs_meta_aops
;
1359 extern const struct inode_operations f2fs_dir_inode_operations
;
1360 extern const struct inode_operations f2fs_symlink_inode_operations
;
1361 extern const struct inode_operations f2fs_special_inode_operations
;
1366 bool f2fs_may_inline(struct inode
*);
1367 int f2fs_read_inline_data(struct inode
*, struct page
*);
1368 int f2fs_convert_inline_data(struct inode
*, pgoff_t
);
1369 int f2fs_write_inline_data(struct inode
*, struct page
*, unsigned int);
1370 int recover_inline_data(struct inode
*, struct page
*);