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
43 #define F2FS_MOUNT_FLUSH_MERGE 0x00000200
45 #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
46 #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
47 #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
49 #define ver_after(a, b) (typecheck(unsigned long long, a) && \
50 typecheck(unsigned long long, b) && \
51 ((long long)((a) - (b)) > 0))
53 typedef u32 block_t
; /*
54 * should not change u32, since it is the on-disk block
55 * address format, __le32.
59 struct f2fs_mount_info
{
63 #define CRCPOLY_LE 0xedb88320
65 static inline __u32
f2fs_crc32(void *buf
, size_t len
)
67 unsigned char *p
= (unsigned char *)buf
;
68 __u32 crc
= F2FS_SUPER_MAGIC
;
73 for (i
= 0; i
< 8; i
++)
74 crc
= (crc
>> 1) ^ ((crc
& 1) ? CRCPOLY_LE
: 0);
79 static inline bool f2fs_crc_valid(__u32 blk_crc
, void *buf
, size_t buf_size
)
81 return f2fs_crc32(buf
, buf_size
) == blk_crc
;
85 * For checkpoint manager
93 * For CP/NAT/SIT/SSA readahead
102 /* for the list of orphan inodes */
103 struct orphan_inode_entry
{
104 struct list_head list
; /* list head */
105 nid_t ino
; /* inode number */
108 /* for the list of directory inodes */
109 struct dir_inode_entry
{
110 struct list_head list
; /* list head */
111 struct inode
*inode
; /* vfs inode pointer */
114 /* for the list of blockaddresses to be discarded */
115 struct discard_entry
{
116 struct list_head list
; /* list head */
117 block_t blkaddr
; /* block address to be discarded */
118 int len
; /* # of consecutive blocks of the discard */
121 /* for the list of fsync inodes, used only during recovery */
122 struct fsync_inode_entry
{
123 struct list_head list
; /* list head */
124 struct inode
*inode
; /* vfs inode pointer */
125 block_t blkaddr
; /* block address locating the last inode */
128 #define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
129 #define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
131 #define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
132 #define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
133 #define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
134 #define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
136 static inline int update_nats_in_cursum(struct f2fs_summary_block
*rs
, int i
)
138 int before
= nats_in_cursum(rs
);
139 rs
->n_nats
= cpu_to_le16(before
+ i
);
143 static inline int update_sits_in_cursum(struct f2fs_summary_block
*rs
, int i
)
145 int before
= sits_in_cursum(rs
);
146 rs
->n_sits
= cpu_to_le16(before
+ i
);
153 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
154 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
156 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
158 * ioctl commands in 32 bit emulation
160 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
161 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
165 * For INODE and NODE manager
168 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
169 * as its node offset to distinguish from index node blocks.
170 * But some bits are used to mark the node block.
172 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
175 ALLOC_NODE
, /* allocate a new node page if needed */
176 LOOKUP_NODE
, /* look up a node without readahead */
178 * look up a node with readahead called
183 #define F2FS_LINK_MAX 32000 /* maximum link count per file */
185 /* for in-memory extent cache entry */
186 #define F2FS_MIN_EXTENT_LEN 16 /* minimum extent length */
189 rwlock_t ext_lock
; /* rwlock for consistency */
190 unsigned int fofs
; /* start offset in a file */
191 u32 blk_addr
; /* start block address of the extent */
192 unsigned int len
; /* length of the extent */
196 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
198 #define FADVISE_COLD_BIT 0x01
199 #define FADVISE_LOST_PINO_BIT 0x02
201 #define DEF_DIR_LEVEL 0
203 struct f2fs_inode_info
{
204 struct inode vfs_inode
; /* serve a vfs inode */
205 unsigned long i_flags
; /* keep an inode flags for ioctl */
206 unsigned char i_advise
; /* use to give file attribute hints */
207 unsigned char i_dir_level
; /* use for dentry level for large dir */
208 unsigned int i_current_depth
; /* use only in directory structure */
209 unsigned int i_pino
; /* parent inode number */
210 umode_t i_acl_mode
; /* keep file acl mode temporarily */
212 /* Use below internally in f2fs*/
213 unsigned long flags
; /* use to pass per-file flags */
214 struct rw_semaphore i_sem
; /* protect fi info */
215 atomic_t dirty_dents
; /* # of dirty dentry pages */
216 f2fs_hash_t chash
; /* hash value of given file name */
217 unsigned int clevel
; /* maximum level of given file name */
218 nid_t i_xattr_nid
; /* node id that contains xattrs */
219 unsigned long long xattr_ver
; /* cp version of xattr modification */
220 struct extent_info ext
; /* in-memory extent cache entry */
223 static inline void get_extent_info(struct extent_info
*ext
,
224 struct f2fs_extent i_ext
)
226 write_lock(&ext
->ext_lock
);
227 ext
->fofs
= le32_to_cpu(i_ext
.fofs
);
228 ext
->blk_addr
= le32_to_cpu(i_ext
.blk_addr
);
229 ext
->len
= le32_to_cpu(i_ext
.len
);
230 write_unlock(&ext
->ext_lock
);
233 static inline void set_raw_extent(struct extent_info
*ext
,
234 struct f2fs_extent
*i_ext
)
236 read_lock(&ext
->ext_lock
);
237 i_ext
->fofs
= cpu_to_le32(ext
->fofs
);
238 i_ext
->blk_addr
= cpu_to_le32(ext
->blk_addr
);
239 i_ext
->len
= cpu_to_le32(ext
->len
);
240 read_unlock(&ext
->ext_lock
);
243 struct f2fs_nm_info
{
244 block_t nat_blkaddr
; /* base disk address of NAT */
245 nid_t max_nid
; /* maximum possible node ids */
246 nid_t next_scan_nid
; /* the next nid to be scanned */
247 unsigned int ram_thresh
; /* control the memory footprint */
249 /* NAT cache management */
250 struct radix_tree_root nat_root
;/* root of the nat entry cache */
251 rwlock_t nat_tree_lock
; /* protect nat_tree_lock */
252 unsigned int nat_cnt
; /* the # of cached nat entries */
253 struct list_head nat_entries
; /* cached nat entry list (clean) */
254 struct list_head dirty_nat_entries
; /* cached nat entry list (dirty) */
256 /* free node ids management */
257 struct radix_tree_root free_nid_root
;/* root of the free_nid cache */
258 struct list_head free_nid_list
; /* a list for free nids */
259 spinlock_t free_nid_list_lock
; /* protect free nid list */
260 unsigned int fcnt
; /* the number of free node id */
261 struct mutex build_lock
; /* lock for build free nids */
264 char *nat_bitmap
; /* NAT bitmap pointer */
265 int bitmap_size
; /* bitmap size */
269 * this structure is used as one of function parameters.
270 * all the information are dedicated to a given direct node block determined
271 * by the data offset in a file.
273 struct dnode_of_data
{
274 struct inode
*inode
; /* vfs inode pointer */
275 struct page
*inode_page
; /* its inode page, NULL is possible */
276 struct page
*node_page
; /* cached direct node page */
277 nid_t nid
; /* node id of the direct node block */
278 unsigned int ofs_in_node
; /* data offset in the node page */
279 bool inode_page_locked
; /* inode page is locked or not */
280 block_t data_blkaddr
; /* block address of the node block */
283 static inline void set_new_dnode(struct dnode_of_data
*dn
, struct inode
*inode
,
284 struct page
*ipage
, struct page
*npage
, nid_t nid
)
286 memset(dn
, 0, sizeof(*dn
));
288 dn
->inode_page
= ipage
;
289 dn
->node_page
= npage
;
296 * By default, there are 6 active log areas across the whole main area.
297 * When considering hot and cold data separation to reduce cleaning overhead,
298 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
300 * In the current design, you should not change the numbers intentionally.
301 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
302 * logs individually according to the underlying devices. (default: 6)
303 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
304 * data and 8 for node logs.
306 #define NR_CURSEG_DATA_TYPE (3)
307 #define NR_CURSEG_NODE_TYPE (3)
308 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
311 CURSEG_HOT_DATA
= 0, /* directory entry blocks */
312 CURSEG_WARM_DATA
, /* data blocks */
313 CURSEG_COLD_DATA
, /* multimedia or GCed data blocks */
314 CURSEG_HOT_NODE
, /* direct node blocks of directory files */
315 CURSEG_WARM_NODE
, /* direct node blocks of normal files */
316 CURSEG_COLD_NODE
, /* indirect node blocks */
321 struct flush_cmd
*next
;
322 struct completion wait
;
326 struct f2fs_sm_info
{
327 struct sit_info
*sit_info
; /* whole segment information */
328 struct free_segmap_info
*free_info
; /* free segment information */
329 struct dirty_seglist_info
*dirty_info
; /* dirty segment information */
330 struct curseg_info
*curseg_array
; /* active segment information */
332 struct list_head wblist_head
; /* list of under-writeback pages */
333 spinlock_t wblist_lock
; /* lock for checkpoint */
335 block_t seg0_blkaddr
; /* block address of 0'th segment */
336 block_t main_blkaddr
; /* start block address of main area */
337 block_t ssa_blkaddr
; /* start block address of SSA area */
339 unsigned int segment_count
; /* total # of segments */
340 unsigned int main_segments
; /* # of segments in main area */
341 unsigned int reserved_segments
; /* # of reserved segments */
342 unsigned int ovp_segments
; /* # of overprovision segments */
344 /* a threshold to reclaim prefree segments */
345 unsigned int rec_prefree_segments
;
347 /* for small discard management */
348 struct list_head discard_list
; /* 4KB discard list */
349 int nr_discards
; /* # of discards in the list */
350 int max_discards
; /* max. discards to be issued */
352 unsigned int ipu_policy
; /* in-place-update policy */
353 unsigned int min_ipu_util
; /* in-place-update threshold */
355 /* for flush command control */
356 struct task_struct
*f2fs_issue_flush
; /* flush thread */
357 wait_queue_head_t flush_wait_queue
; /* waiting queue for wake-up */
358 struct flush_cmd
*issue_list
; /* list for command issue */
359 struct flush_cmd
*dispatch_list
; /* list for command dispatch */
360 spinlock_t issue_lock
; /* for issue list lock */
361 struct flush_cmd
*issue_tail
; /* list tail of issue list */
368 * COUNT_TYPE for monitoring
370 * f2fs monitors the number of several block types such as on-writeback,
371 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
382 * The below are the page types of bios used in submti_bio().
383 * The available types are:
384 * DATA User data pages. It operates as async mode.
385 * NODE Node pages. It operates as async mode.
386 * META FS metadata pages such as SIT, NAT, CP.
387 * NR_PAGE_TYPE The number of page types.
388 * META_FLUSH Make sure the previous pages are written
389 * with waiting the bio's completion
390 * ... Only can be used with META.
392 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
401 struct f2fs_io_info
{
402 enum page_type type
; /* contains DATA/NODE/META/META_FLUSH */
403 int rw
; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
406 #define is_read_io(rw) (((rw) & 1) == READ)
407 struct f2fs_bio_info
{
408 struct f2fs_sb_info
*sbi
; /* f2fs superblock */
409 struct bio
*bio
; /* bios to merge */
410 sector_t last_block_in_bio
; /* last block number */
411 struct f2fs_io_info fio
; /* store buffered io info. */
412 struct rw_semaphore io_rwsem
; /* blocking op for bio */
415 struct f2fs_sb_info
{
416 struct super_block
*sb
; /* pointer to VFS super block */
417 struct proc_dir_entry
*s_proc
; /* proc entry */
418 struct buffer_head
*raw_super_buf
; /* buffer head of raw sb */
419 struct f2fs_super_block
*raw_super
; /* raw super block pointer */
420 int s_dirty
; /* dirty flag for checkpoint */
422 /* for node-related operations */
423 struct f2fs_nm_info
*nm_info
; /* node manager */
424 struct inode
*node_inode
; /* cache node blocks */
426 /* for segment-related operations */
427 struct f2fs_sm_info
*sm_info
; /* segment manager */
429 /* for bio operations */
430 struct f2fs_bio_info read_io
; /* for read bios */
431 struct f2fs_bio_info write_io
[NR_PAGE_TYPE
]; /* for write bios */
432 struct completion
*wait_io
; /* for completion bios */
435 struct f2fs_checkpoint
*ckpt
; /* raw checkpoint pointer */
436 struct inode
*meta_inode
; /* cache meta blocks */
437 struct mutex cp_mutex
; /* checkpoint procedure lock */
438 struct rw_semaphore cp_rwsem
; /* blocking FS operations */
439 struct mutex node_write
; /* locking node writes */
440 struct mutex writepages
; /* mutex for writepages() */
441 bool por_doing
; /* recovery is doing or not */
442 wait_queue_head_t cp_wait
;
444 /* for orphan inode management */
445 struct list_head orphan_inode_list
; /* orphan inode list */
446 spinlock_t orphan_inode_lock
; /* for orphan inode list */
447 unsigned int n_orphans
; /* # of orphan inodes */
448 unsigned int max_orphans
; /* max orphan inodes */
450 /* for directory inode management */
451 struct list_head dir_inode_list
; /* dir inode list */
452 spinlock_t dir_inode_lock
; /* for dir inode list lock */
454 /* basic file system units */
455 unsigned int log_sectors_per_block
; /* log2 sectors per block */
456 unsigned int log_blocksize
; /* log2 block size */
457 unsigned int blocksize
; /* block size */
458 unsigned int root_ino_num
; /* root inode number*/
459 unsigned int node_ino_num
; /* node inode number*/
460 unsigned int meta_ino_num
; /* meta inode number*/
461 unsigned int log_blocks_per_seg
; /* log2 blocks per segment */
462 unsigned int blocks_per_seg
; /* blocks per segment */
463 unsigned int segs_per_sec
; /* segments per section */
464 unsigned int secs_per_zone
; /* sections per zone */
465 unsigned int total_sections
; /* total section count */
466 unsigned int total_node_count
; /* total node block count */
467 unsigned int total_valid_node_count
; /* valid node block count */
468 unsigned int total_valid_inode_count
; /* valid inode count */
469 int active_logs
; /* # of active logs */
470 int dir_level
; /* directory level */
472 block_t user_block_count
; /* # of user blocks */
473 block_t total_valid_block_count
; /* # of valid blocks */
474 block_t alloc_valid_block_count
; /* # of allocated blocks */
475 block_t last_valid_block_count
; /* for recovery */
476 u32 s_next_generation
; /* for NFS support */
477 atomic_t nr_pages
[NR_COUNT_TYPE
]; /* # of pages, see count_type */
479 struct f2fs_mount_info mount_opt
; /* mount options */
481 /* for cleaning operations */
482 struct mutex gc_mutex
; /* mutex for GC */
483 struct f2fs_gc_kthread
*gc_thread
; /* GC thread */
484 unsigned int cur_victim_sec
; /* current victim section num */
486 /* maximum # of trials to find a victim segment for SSR and GC */
487 unsigned int max_victim_search
;
490 * for stat information.
491 * one is for the LFS mode, and the other is for the SSR mode.
493 #ifdef CONFIG_F2FS_STAT_FS
494 struct f2fs_stat_info
*stat_info
; /* FS status information */
495 unsigned int segment_count
[2]; /* # of allocated segments */
496 unsigned int block_count
[2]; /* # of allocated blocks */
497 int total_hit_ext
, read_hit_ext
; /* extent cache hit ratio */
498 int inline_inode
; /* # of inline_data inodes */
499 int bg_gc
; /* background gc calls */
500 unsigned int n_dirty_dirs
; /* # of dir inodes */
502 unsigned int last_victim
[2]; /* last victim segment # */
503 spinlock_t stat_lock
; /* lock for stat operations */
505 /* For sysfs suppport */
506 struct kobject s_kobj
;
507 struct completion s_kobj_unregister
;
513 static inline struct f2fs_inode_info
*F2FS_I(struct inode
*inode
)
515 return container_of(inode
, struct f2fs_inode_info
, vfs_inode
);
518 static inline struct f2fs_sb_info
*F2FS_SB(struct super_block
*sb
)
520 return sb
->s_fs_info
;
523 static inline struct f2fs_super_block
*F2FS_RAW_SUPER(struct f2fs_sb_info
*sbi
)
525 return (struct f2fs_super_block
*)(sbi
->raw_super
);
528 static inline struct f2fs_checkpoint
*F2FS_CKPT(struct f2fs_sb_info
*sbi
)
530 return (struct f2fs_checkpoint
*)(sbi
->ckpt
);
533 static inline struct f2fs_node
*F2FS_NODE(struct page
*page
)
535 return (struct f2fs_node
*)page_address(page
);
538 static inline struct f2fs_inode
*F2FS_INODE(struct page
*page
)
540 return &((struct f2fs_node
*)page_address(page
))->i
;
543 static inline struct f2fs_nm_info
*NM_I(struct f2fs_sb_info
*sbi
)
545 return (struct f2fs_nm_info
*)(sbi
->nm_info
);
548 static inline struct f2fs_sm_info
*SM_I(struct f2fs_sb_info
*sbi
)
550 return (struct f2fs_sm_info
*)(sbi
->sm_info
);
553 static inline struct sit_info
*SIT_I(struct f2fs_sb_info
*sbi
)
555 return (struct sit_info
*)(SM_I(sbi
)->sit_info
);
558 static inline struct free_segmap_info
*FREE_I(struct f2fs_sb_info
*sbi
)
560 return (struct free_segmap_info
*)(SM_I(sbi
)->free_info
);
563 static inline struct dirty_seglist_info
*DIRTY_I(struct f2fs_sb_info
*sbi
)
565 return (struct dirty_seglist_info
*)(SM_I(sbi
)->dirty_info
);
568 static inline struct address_space
*META_MAPPING(struct f2fs_sb_info
*sbi
)
570 return sbi
->meta_inode
->i_mapping
;
573 static inline struct address_space
*NODE_MAPPING(struct f2fs_sb_info
*sbi
)
575 return sbi
->node_inode
->i_mapping
;
578 static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info
*sbi
)
583 static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info
*sbi
)
588 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint
*cp
)
590 return le64_to_cpu(cp
->checkpoint_ver
);
593 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
595 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
596 return ckpt_flags
& f
;
599 static inline void set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
601 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
603 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
606 static inline void clear_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
608 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
610 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
613 static inline void f2fs_lock_op(struct f2fs_sb_info
*sbi
)
615 down_read(&sbi
->cp_rwsem
);
618 static inline void f2fs_unlock_op(struct f2fs_sb_info
*sbi
)
620 up_read(&sbi
->cp_rwsem
);
623 static inline void f2fs_lock_all(struct f2fs_sb_info
*sbi
)
625 f2fs_down_write(&sbi
->cp_rwsem
, &sbi
->cp_mutex
);
628 static inline void f2fs_unlock_all(struct f2fs_sb_info
*sbi
)
630 up_write(&sbi
->cp_rwsem
);
634 * Check whether the given nid is within node id range.
636 static inline int check_nid_range(struct f2fs_sb_info
*sbi
, nid_t nid
)
638 WARN_ON((nid
>= NM_I(sbi
)->max_nid
));
639 if (unlikely(nid
>= NM_I(sbi
)->max_nid
))
644 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
647 * Check whether the inode has blocks or not
649 static inline int F2FS_HAS_BLOCKS(struct inode
*inode
)
651 if (F2FS_I(inode
)->i_xattr_nid
)
652 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
+ 1;
654 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
;
657 static inline bool f2fs_has_xattr_block(unsigned int ofs
)
659 return ofs
== XATTR_NODE_OFFSET
;
662 static inline bool inc_valid_block_count(struct f2fs_sb_info
*sbi
,
663 struct inode
*inode
, blkcnt_t count
)
665 block_t valid_block_count
;
667 spin_lock(&sbi
->stat_lock
);
669 sbi
->total_valid_block_count
+ (block_t
)count
;
670 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
671 spin_unlock(&sbi
->stat_lock
);
674 inode
->i_blocks
+= count
;
675 sbi
->total_valid_block_count
= valid_block_count
;
676 sbi
->alloc_valid_block_count
+= (block_t
)count
;
677 spin_unlock(&sbi
->stat_lock
);
681 static inline void dec_valid_block_count(struct f2fs_sb_info
*sbi
,
685 spin_lock(&sbi
->stat_lock
);
686 f2fs_bug_on(sbi
->total_valid_block_count
< (block_t
) count
);
687 f2fs_bug_on(inode
->i_blocks
< count
);
688 inode
->i_blocks
-= count
;
689 sbi
->total_valid_block_count
-= (block_t
)count
;
690 spin_unlock(&sbi
->stat_lock
);
693 static inline void inc_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
695 atomic_inc(&sbi
->nr_pages
[count_type
]);
696 F2FS_SET_SB_DIRT(sbi
);
699 static inline void inode_inc_dirty_dents(struct inode
*inode
)
701 inc_page_count(F2FS_SB(inode
->i_sb
), F2FS_DIRTY_DENTS
);
702 atomic_inc(&F2FS_I(inode
)->dirty_dents
);
705 static inline void dec_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
707 atomic_dec(&sbi
->nr_pages
[count_type
]);
710 static inline void inode_dec_dirty_dents(struct inode
*inode
)
712 if (!S_ISDIR(inode
->i_mode
))
715 dec_page_count(F2FS_SB(inode
->i_sb
), F2FS_DIRTY_DENTS
);
716 atomic_dec(&F2FS_I(inode
)->dirty_dents
);
719 static inline int get_pages(struct f2fs_sb_info
*sbi
, int count_type
)
721 return atomic_read(&sbi
->nr_pages
[count_type
]);
724 static inline int get_dirty_dents(struct inode
*inode
)
726 return atomic_read(&F2FS_I(inode
)->dirty_dents
);
729 static inline int get_blocktype_secs(struct f2fs_sb_info
*sbi
, int block_type
)
731 unsigned int pages_per_sec
= sbi
->segs_per_sec
*
732 (1 << sbi
->log_blocks_per_seg
);
733 return ((get_pages(sbi
, block_type
) + pages_per_sec
- 1)
734 >> sbi
->log_blocks_per_seg
) / sbi
->segs_per_sec
;
737 static inline block_t
valid_user_blocks(struct f2fs_sb_info
*sbi
)
739 return sbi
->total_valid_block_count
;
742 static inline unsigned long __bitmap_size(struct f2fs_sb_info
*sbi
, int flag
)
744 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
746 /* return NAT or SIT bitmap */
747 if (flag
== NAT_BITMAP
)
748 return le32_to_cpu(ckpt
->nat_ver_bitmap_bytesize
);
749 else if (flag
== SIT_BITMAP
)
750 return le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
);
755 static inline void *__bitmap_ptr(struct f2fs_sb_info
*sbi
, int flag
)
757 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
758 int offset
= (flag
== NAT_BITMAP
) ?
759 le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
) : 0;
760 return &ckpt
->sit_nat_version_bitmap
+ offset
;
763 static inline block_t
__start_cp_addr(struct f2fs_sb_info
*sbi
)
766 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
767 unsigned long long ckpt_version
= cur_cp_version(ckpt
);
769 start_addr
= le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_blkaddr
);
772 * odd numbered checkpoint should at cp segment 0
773 * and even segent must be at cp segment 1
775 if (!(ckpt_version
& 1))
776 start_addr
+= sbi
->blocks_per_seg
;
781 static inline block_t
__start_sum_addr(struct f2fs_sb_info
*sbi
)
783 return le32_to_cpu(F2FS_CKPT(sbi
)->cp_pack_start_sum
);
786 static inline bool inc_valid_node_count(struct f2fs_sb_info
*sbi
,
789 block_t valid_block_count
;
790 unsigned int valid_node_count
;
792 spin_lock(&sbi
->stat_lock
);
794 valid_block_count
= sbi
->total_valid_block_count
+ 1;
795 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
796 spin_unlock(&sbi
->stat_lock
);
800 valid_node_count
= sbi
->total_valid_node_count
+ 1;
801 if (unlikely(valid_node_count
> sbi
->total_node_count
)) {
802 spin_unlock(&sbi
->stat_lock
);
809 sbi
->alloc_valid_block_count
++;
810 sbi
->total_valid_node_count
++;
811 sbi
->total_valid_block_count
++;
812 spin_unlock(&sbi
->stat_lock
);
817 static inline void dec_valid_node_count(struct f2fs_sb_info
*sbi
,
820 spin_lock(&sbi
->stat_lock
);
822 f2fs_bug_on(!sbi
->total_valid_block_count
);
823 f2fs_bug_on(!sbi
->total_valid_node_count
);
824 f2fs_bug_on(!inode
->i_blocks
);
827 sbi
->total_valid_node_count
--;
828 sbi
->total_valid_block_count
--;
830 spin_unlock(&sbi
->stat_lock
);
833 static inline unsigned int valid_node_count(struct f2fs_sb_info
*sbi
)
835 return sbi
->total_valid_node_count
;
838 static inline void inc_valid_inode_count(struct f2fs_sb_info
*sbi
)
840 spin_lock(&sbi
->stat_lock
);
841 f2fs_bug_on(sbi
->total_valid_inode_count
== sbi
->total_node_count
);
842 sbi
->total_valid_inode_count
++;
843 spin_unlock(&sbi
->stat_lock
);
846 static inline void dec_valid_inode_count(struct f2fs_sb_info
*sbi
)
848 spin_lock(&sbi
->stat_lock
);
849 f2fs_bug_on(!sbi
->total_valid_inode_count
);
850 sbi
->total_valid_inode_count
--;
851 spin_unlock(&sbi
->stat_lock
);
854 static inline unsigned int valid_inode_count(struct f2fs_sb_info
*sbi
)
856 return sbi
->total_valid_inode_count
;
859 static inline void f2fs_put_page(struct page
*page
, int unlock
)
865 f2fs_bug_on(!PageLocked(page
));
868 page_cache_release(page
);
871 static inline void f2fs_put_dnode(struct dnode_of_data
*dn
)
874 f2fs_put_page(dn
->node_page
, 1);
875 if (dn
->inode_page
&& dn
->node_page
!= dn
->inode_page
)
876 f2fs_put_page(dn
->inode_page
, 0);
877 dn
->node_page
= NULL
;
878 dn
->inode_page
= NULL
;
881 static inline struct kmem_cache
*f2fs_kmem_cache_create(const char *name
,
884 return kmem_cache_create(name
, size
, 0, SLAB_RECLAIM_ACCOUNT
, NULL
);
887 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache
*cachep
,
892 entry
= kmem_cache_alloc(cachep
, flags
);
901 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
903 static inline bool IS_INODE(struct page
*page
)
905 struct f2fs_node
*p
= F2FS_NODE(page
);
906 return RAW_IS_INODE(p
);
909 static inline __le32
*blkaddr_in_node(struct f2fs_node
*node
)
911 return RAW_IS_INODE(node
) ? node
->i
.i_addr
: node
->dn
.addr
;
914 static inline block_t
datablock_addr(struct page
*node_page
,
917 struct f2fs_node
*raw_node
;
919 raw_node
= F2FS_NODE(node_page
);
920 addr_array
= blkaddr_in_node(raw_node
);
921 return le32_to_cpu(addr_array
[offset
]);
924 static inline int f2fs_test_bit(unsigned int nr
, char *addr
)
929 mask
= 1 << (7 - (nr
& 0x07));
933 static inline int f2fs_set_bit(unsigned int nr
, char *addr
)
939 mask
= 1 << (7 - (nr
& 0x07));
945 static inline int f2fs_clear_bit(unsigned int nr
, char *addr
)
951 mask
= 1 << (7 - (nr
& 0x07));
957 /* used for f2fs_inode_info->flags */
959 FI_NEW_INODE
, /* indicate newly allocated inode */
960 FI_DIRTY_INODE
, /* indicate inode is dirty or not */
961 FI_INC_LINK
, /* need to increment i_nlink */
962 FI_ACL_MODE
, /* indicate acl mode */
963 FI_NO_ALLOC
, /* should not allocate any blocks */
964 FI_UPDATE_DIR
, /* should update inode block for consistency */
965 FI_DELAY_IPUT
, /* used for the recovery */
966 FI_NO_EXTENT
, /* not to use the extent cache */
967 FI_INLINE_XATTR
, /* used for inline xattr */
968 FI_INLINE_DATA
, /* used for inline data*/
971 static inline void set_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
973 set_bit(flag
, &fi
->flags
);
976 static inline int is_inode_flag_set(struct f2fs_inode_info
*fi
, int flag
)
978 return test_bit(flag
, &fi
->flags
);
981 static inline void clear_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
983 clear_bit(flag
, &fi
->flags
);
986 static inline void set_acl_inode(struct f2fs_inode_info
*fi
, umode_t mode
)
988 fi
->i_acl_mode
= mode
;
989 set_inode_flag(fi
, FI_ACL_MODE
);
992 static inline int cond_clear_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
994 if (is_inode_flag_set(fi
, FI_ACL_MODE
)) {
995 clear_inode_flag(fi
, FI_ACL_MODE
);
1001 static inline void get_inline_info(struct f2fs_inode_info
*fi
,
1002 struct f2fs_inode
*ri
)
1004 if (ri
->i_inline
& F2FS_INLINE_XATTR
)
1005 set_inode_flag(fi
, FI_INLINE_XATTR
);
1006 if (ri
->i_inline
& F2FS_INLINE_DATA
)
1007 set_inode_flag(fi
, FI_INLINE_DATA
);
1010 static inline void set_raw_inline(struct f2fs_inode_info
*fi
,
1011 struct f2fs_inode
*ri
)
1015 if (is_inode_flag_set(fi
, FI_INLINE_XATTR
))
1016 ri
->i_inline
|= F2FS_INLINE_XATTR
;
1017 if (is_inode_flag_set(fi
, FI_INLINE_DATA
))
1018 ri
->i_inline
|= F2FS_INLINE_DATA
;
1021 static inline int f2fs_has_inline_xattr(struct inode
*inode
)
1023 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_XATTR
);
1026 static inline unsigned int addrs_per_inode(struct f2fs_inode_info
*fi
)
1028 if (f2fs_has_inline_xattr(&fi
->vfs_inode
))
1029 return DEF_ADDRS_PER_INODE
- F2FS_INLINE_XATTR_ADDRS
;
1030 return DEF_ADDRS_PER_INODE
;
1033 static inline void *inline_xattr_addr(struct page
*page
)
1035 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1036 return (void *)&(ri
->i_addr
[DEF_ADDRS_PER_INODE
-
1037 F2FS_INLINE_XATTR_ADDRS
]);
1040 static inline int inline_xattr_size(struct inode
*inode
)
1042 if (f2fs_has_inline_xattr(inode
))
1043 return F2FS_INLINE_XATTR_ADDRS
<< 2;
1048 static inline int f2fs_has_inline_data(struct inode
*inode
)
1050 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DATA
);
1053 static inline void *inline_data_addr(struct page
*page
)
1055 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1056 return (void *)&(ri
->i_addr
[1]);
1059 static inline int f2fs_readonly(struct super_block
*sb
)
1061 return sb
->s_flags
& MS_RDONLY
;
1064 static inline void f2fs_stop_checkpoint(struct f2fs_sb_info
*sbi
)
1066 set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1067 sbi
->sb
->s_flags
|= MS_RDONLY
;
1070 #define get_inode_mode(i) \
1071 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1072 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1077 int f2fs_sync_file(struct file
*, loff_t
, loff_t
, int);
1078 void truncate_data_blocks(struct dnode_of_data
*);
1079 int truncate_blocks(struct inode
*, u64
);
1080 void f2fs_truncate(struct inode
*);
1081 int f2fs_getattr(struct vfsmount
*, struct dentry
*, struct kstat
*);
1082 int f2fs_setattr(struct dentry
*, struct iattr
*);
1083 int truncate_hole(struct inode
*, pgoff_t
, pgoff_t
);
1084 int truncate_data_blocks_range(struct dnode_of_data
*, int);
1085 long f2fs_ioctl(struct file
*, unsigned int, unsigned long);
1086 long f2fs_compat_ioctl(struct file
*, unsigned int, unsigned long);
1091 void f2fs_set_inode_flags(struct inode
*);
1092 struct inode
*f2fs_iget(struct super_block
*, unsigned long);
1093 int try_to_free_nats(struct f2fs_sb_info
*, int);
1094 void update_inode(struct inode
*, struct page
*);
1095 void update_inode_page(struct inode
*);
1096 int f2fs_write_inode(struct inode
*, struct writeback_control
*);
1097 void f2fs_evict_inode(struct inode
*);
1102 struct dentry
*f2fs_get_parent(struct dentry
*child
);
1107 struct f2fs_dir_entry
*f2fs_find_entry(struct inode
*, struct qstr
*,
1109 struct f2fs_dir_entry
*f2fs_parent_dir(struct inode
*, struct page
**);
1110 ino_t
f2fs_inode_by_name(struct inode
*, struct qstr
*);
1111 void f2fs_set_link(struct inode
*, struct f2fs_dir_entry
*,
1112 struct page
*, struct inode
*);
1113 int update_dent_inode(struct inode
*, const struct qstr
*);
1114 int __f2fs_add_link(struct inode
*, const struct qstr
*, struct inode
*);
1115 void f2fs_delete_entry(struct f2fs_dir_entry
*, struct page
*, struct inode
*);
1116 int f2fs_make_empty(struct inode
*, struct inode
*);
1117 bool f2fs_empty_dir(struct inode
*);
1119 static inline int f2fs_add_link(struct dentry
*dentry
, struct inode
*inode
)
1121 return __f2fs_add_link(dentry
->d_parent
->d_inode
, &dentry
->d_name
,
1128 int f2fs_sync_fs(struct super_block
*, int);
1129 extern __printf(3, 4)
1130 void f2fs_msg(struct super_block
*, const char *, const char *, ...);
1135 f2fs_hash_t
f2fs_dentry_hash(const char *, size_t);
1140 struct dnode_of_data
;
1143 int is_checkpointed_node(struct f2fs_sb_info
*, nid_t
);
1144 bool fsync_mark_done(struct f2fs_sb_info
*, nid_t
);
1145 void get_node_info(struct f2fs_sb_info
*, nid_t
, struct node_info
*);
1146 int get_dnode_of_data(struct dnode_of_data
*, pgoff_t
, int);
1147 int truncate_inode_blocks(struct inode
*, pgoff_t
);
1148 int truncate_xattr_node(struct inode
*, struct page
*);
1149 int wait_on_node_pages_writeback(struct f2fs_sb_info
*, nid_t
);
1150 void remove_inode_page(struct inode
*);
1151 struct page
*new_inode_page(struct inode
*, const struct qstr
*);
1152 struct page
*new_node_page(struct dnode_of_data
*, unsigned int, struct page
*);
1153 void ra_node_page(struct f2fs_sb_info
*, nid_t
);
1154 struct page
*get_node_page(struct f2fs_sb_info
*, pgoff_t
);
1155 struct page
*get_node_page_ra(struct page
*, int);
1156 void sync_inode_page(struct dnode_of_data
*);
1157 int sync_node_pages(struct f2fs_sb_info
*, nid_t
, struct writeback_control
*);
1158 bool alloc_nid(struct f2fs_sb_info
*, nid_t
*);
1159 void alloc_nid_done(struct f2fs_sb_info
*, nid_t
);
1160 void alloc_nid_failed(struct f2fs_sb_info
*, nid_t
);
1161 void recover_node_page(struct f2fs_sb_info
*, struct page
*,
1162 struct f2fs_summary
*, struct node_info
*, block_t
);
1163 bool recover_xattr_data(struct inode
*, struct page
*, block_t
);
1164 int recover_inode_page(struct f2fs_sb_info
*, struct page
*);
1165 int restore_node_summary(struct f2fs_sb_info
*, unsigned int,
1166 struct f2fs_summary_block
*);
1167 void flush_nat_entries(struct f2fs_sb_info
*);
1168 int build_node_manager(struct f2fs_sb_info
*);
1169 void destroy_node_manager(struct f2fs_sb_info
*);
1170 int __init
create_node_manager_caches(void);
1171 void destroy_node_manager_caches(void);
1176 void f2fs_balance_fs(struct f2fs_sb_info
*);
1177 void f2fs_balance_fs_bg(struct f2fs_sb_info
*);
1178 int f2fs_issue_flush(struct f2fs_sb_info
*);
1179 void invalidate_blocks(struct f2fs_sb_info
*, block_t
);
1180 void refresh_sit_entry(struct f2fs_sb_info
*, block_t
, block_t
);
1181 void clear_prefree_segments(struct f2fs_sb_info
*);
1182 int npages_for_summary_flush(struct f2fs_sb_info
*);
1183 void allocate_new_segments(struct f2fs_sb_info
*);
1184 struct page
*get_sum_page(struct f2fs_sb_info
*, unsigned int);
1185 void write_meta_page(struct f2fs_sb_info
*, struct page
*);
1186 void write_node_page(struct f2fs_sb_info
*, struct page
*,
1187 struct f2fs_io_info
*, unsigned int, block_t
, block_t
*);
1188 void write_data_page(struct page
*, struct dnode_of_data
*, block_t
*,
1189 struct f2fs_io_info
*);
1190 void rewrite_data_page(struct page
*, block_t
, struct f2fs_io_info
*);
1191 void recover_data_page(struct f2fs_sb_info
*, struct page
*,
1192 struct f2fs_summary
*, block_t
, block_t
);
1193 void rewrite_node_page(struct f2fs_sb_info
*, struct page
*,
1194 struct f2fs_summary
*, block_t
, block_t
);
1195 void allocate_data_block(struct f2fs_sb_info
*, struct page
*,
1196 block_t
, block_t
*, struct f2fs_summary
*, int);
1197 void f2fs_wait_on_page_writeback(struct page
*, enum page_type
);
1198 void write_data_summaries(struct f2fs_sb_info
*, block_t
);
1199 void write_node_summaries(struct f2fs_sb_info
*, block_t
);
1200 int lookup_journal_in_cursum(struct f2fs_summary_block
*,
1201 int, unsigned int, int);
1202 void flush_sit_entries(struct f2fs_sb_info
*);
1203 int build_segment_manager(struct f2fs_sb_info
*);
1204 void destroy_segment_manager(struct f2fs_sb_info
*);
1205 int __init
create_segment_manager_caches(void);
1206 void destroy_segment_manager_caches(void);
1211 struct page
*grab_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1212 struct page
*get_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1213 int ra_meta_pages(struct f2fs_sb_info
*, int, int, int);
1214 long sync_meta_pages(struct f2fs_sb_info
*, enum page_type
, long);
1215 int acquire_orphan_inode(struct f2fs_sb_info
*);
1216 void release_orphan_inode(struct f2fs_sb_info
*);
1217 void add_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1218 void remove_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1219 void recover_orphan_inodes(struct f2fs_sb_info
*);
1220 int get_valid_checkpoint(struct f2fs_sb_info
*);
1221 void set_dirty_dir_page(struct inode
*, struct page
*);
1222 void add_dirty_dir_inode(struct inode
*);
1223 void remove_dirty_dir_inode(struct inode
*);
1224 struct inode
*check_dirty_dir_inode(struct f2fs_sb_info
*, nid_t
);
1225 void sync_dirty_dir_inodes(struct f2fs_sb_info
*);
1226 void write_checkpoint(struct f2fs_sb_info
*, bool);
1227 void init_orphan_info(struct f2fs_sb_info
*);
1228 int __init
create_checkpoint_caches(void);
1229 void destroy_checkpoint_caches(void);
1234 void f2fs_submit_merged_bio(struct f2fs_sb_info
*, enum page_type
, int);
1235 int f2fs_submit_page_bio(struct f2fs_sb_info
*, struct page
*, block_t
, int);
1236 void f2fs_submit_page_mbio(struct f2fs_sb_info
*, struct page
*, block_t
,
1237 struct f2fs_io_info
*);
1238 int reserve_new_block(struct dnode_of_data
*);
1239 int f2fs_reserve_block(struct dnode_of_data
*, pgoff_t
);
1240 void update_extent_cache(block_t
, struct dnode_of_data
*);
1241 struct page
*find_data_page(struct inode
*, pgoff_t
, bool);
1242 struct page
*get_lock_data_page(struct inode
*, pgoff_t
);
1243 struct page
*get_new_data_page(struct inode
*, struct page
*, pgoff_t
, bool);
1244 int do_write_data_page(struct page
*, struct f2fs_io_info
*);
1249 int start_gc_thread(struct f2fs_sb_info
*);
1250 void stop_gc_thread(struct f2fs_sb_info
*);
1251 block_t
start_bidx_of_node(unsigned int, struct f2fs_inode_info
*);
1252 int f2fs_gc(struct f2fs_sb_info
*);
1253 void build_gc_manager(struct f2fs_sb_info
*);
1254 int __init
create_gc_caches(void);
1255 void destroy_gc_caches(void);
1260 int recover_fsync_data(struct f2fs_sb_info
*);
1261 bool space_for_roll_forward(struct f2fs_sb_info
*);
1266 #ifdef CONFIG_F2FS_STAT_FS
1267 struct f2fs_stat_info
{
1268 struct list_head stat_list
;
1269 struct f2fs_sb_info
*sbi
;
1270 struct mutex stat_lock
;
1271 int all_area_segs
, sit_area_segs
, nat_area_segs
, ssa_area_segs
;
1272 int main_area_segs
, main_area_sections
, main_area_zones
;
1273 int hit_ext
, total_ext
;
1274 int ndirty_node
, ndirty_dent
, ndirty_dirs
, ndirty_meta
;
1275 int nats
, sits
, fnids
;
1276 int total_count
, utilization
;
1277 int bg_gc
, inline_inode
;
1278 unsigned int valid_count
, valid_node_count
, valid_inode_count
;
1279 unsigned int bimodal
, avg_vblocks
;
1280 int util_free
, util_valid
, util_invalid
;
1281 int rsvd_segs
, overp_segs
;
1282 int dirty_count
, node_pages
, meta_pages
;
1283 int prefree_count
, call_count
, cp_count
;
1284 int tot_segs
, node_segs
, data_segs
, free_segs
, free_secs
;
1285 int tot_blks
, data_blks
, node_blks
;
1286 int curseg
[NR_CURSEG_TYPE
];
1287 int cursec
[NR_CURSEG_TYPE
];
1288 int curzone
[NR_CURSEG_TYPE
];
1290 unsigned int segment_count
[2];
1291 unsigned int block_count
[2];
1292 unsigned base_mem
, cache_mem
;
1295 static inline struct f2fs_stat_info
*F2FS_STAT(struct f2fs_sb_info
*sbi
)
1297 return (struct f2fs_stat_info
*)sbi
->stat_info
;
1300 #define stat_inc_cp_count(si) ((si)->cp_count++)
1301 #define stat_inc_call_count(si) ((si)->call_count++)
1302 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1303 #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1304 #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
1305 #define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++)
1306 #define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++)
1307 #define stat_inc_inline_inode(inode) \
1309 if (f2fs_has_inline_data(inode)) \
1310 ((F2FS_SB(inode->i_sb))->inline_inode++); \
1312 #define stat_dec_inline_inode(inode) \
1314 if (f2fs_has_inline_data(inode)) \
1315 ((F2FS_SB(inode->i_sb))->inline_inode--); \
1318 #define stat_inc_seg_type(sbi, curseg) \
1319 ((sbi)->segment_count[(curseg)->alloc_type]++)
1320 #define stat_inc_block_count(sbi, curseg) \
1321 ((sbi)->block_count[(curseg)->alloc_type]++)
1323 #define stat_inc_seg_count(sbi, type) \
1325 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1327 if (type == SUM_TYPE_DATA) \
1333 #define stat_inc_tot_blk_count(si, blks) \
1334 (si->tot_blks += (blks))
1336 #define stat_inc_data_blk_count(sbi, blks) \
1338 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1339 stat_inc_tot_blk_count(si, blks); \
1340 si->data_blks += (blks); \
1343 #define stat_inc_node_blk_count(sbi, blks) \
1345 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1346 stat_inc_tot_blk_count(si, blks); \
1347 si->node_blks += (blks); \
1350 int f2fs_build_stats(struct f2fs_sb_info
*);
1351 void f2fs_destroy_stats(struct f2fs_sb_info
*);
1352 void __init
f2fs_create_root_stats(void);
1353 void f2fs_destroy_root_stats(void);
1355 #define stat_inc_cp_count(si)
1356 #define stat_inc_call_count(si)
1357 #define stat_inc_bggc_count(si)
1358 #define stat_inc_dirty_dir(sbi)
1359 #define stat_dec_dirty_dir(sbi)
1360 #define stat_inc_total_hit(sb)
1361 #define stat_inc_read_hit(sb)
1362 #define stat_inc_inline_inode(inode)
1363 #define stat_dec_inline_inode(inode)
1364 #define stat_inc_seg_type(sbi, curseg)
1365 #define stat_inc_block_count(sbi, curseg)
1366 #define stat_inc_seg_count(si, type)
1367 #define stat_inc_tot_blk_count(si, blks)
1368 #define stat_inc_data_blk_count(si, blks)
1369 #define stat_inc_node_blk_count(sbi, blks)
1371 static inline int f2fs_build_stats(struct f2fs_sb_info
*sbi
) { return 0; }
1372 static inline void f2fs_destroy_stats(struct f2fs_sb_info
*sbi
) { }
1373 static inline void __init
f2fs_create_root_stats(void) { }
1374 static inline void f2fs_destroy_root_stats(void) { }
1377 extern const struct file_operations f2fs_dir_operations
;
1378 extern const struct file_operations f2fs_file_operations
;
1379 extern const struct inode_operations f2fs_file_inode_operations
;
1380 extern const struct address_space_operations f2fs_dblock_aops
;
1381 extern const struct address_space_operations f2fs_node_aops
;
1382 extern const struct address_space_operations f2fs_meta_aops
;
1383 extern const struct inode_operations f2fs_dir_inode_operations
;
1384 extern const struct inode_operations f2fs_symlink_inode_operations
;
1385 extern const struct inode_operations f2fs_special_inode_operations
;
1390 bool f2fs_may_inline(struct inode
*);
1391 int f2fs_read_inline_data(struct inode
*, struct page
*);
1392 int f2fs_convert_inline_data(struct inode
*, pgoff_t
);
1393 int f2fs_write_inline_data(struct inode
*, struct page
*, unsigned int);
1394 int recover_inline_data(struct inode
*, struct page
*);