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(sbi, condition) BUG_ON(condition)
25 #define f2fs_down_write(x, y) down_write_nest_lock(x, y)
27 #define f2fs_bug_on(sbi, condition) \
29 if (unlikely(condition)) { \
31 set_sbi_flag(sbi, SBI_NEED_FSCK); \
34 #define f2fs_down_write(x, y) down_write(x)
40 #define F2FS_MOUNT_BG_GC 0x00000001
41 #define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
42 #define F2FS_MOUNT_DISCARD 0x00000004
43 #define F2FS_MOUNT_NOHEAP 0x00000008
44 #define F2FS_MOUNT_XATTR_USER 0x00000010
45 #define F2FS_MOUNT_POSIX_ACL 0x00000020
46 #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
47 #define F2FS_MOUNT_INLINE_XATTR 0x00000080
48 #define F2FS_MOUNT_INLINE_DATA 0x00000100
49 #define F2FS_MOUNT_INLINE_DENTRY 0x00000200
50 #define F2FS_MOUNT_FLUSH_MERGE 0x00000400
51 #define F2FS_MOUNT_NOBARRIER 0x00000800
52 #define F2FS_MOUNT_FASTBOOT 0x00001000
53 #define F2FS_MOUNT_EXTENT_CACHE 0x00002000
55 #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
56 #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
57 #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
59 #define ver_after(a, b) (typecheck(unsigned long long, a) && \
60 typecheck(unsigned long long, b) && \
61 ((long long)((a) - (b)) > 0))
63 typedef u32 block_t
; /*
64 * should not change u32, since it is the on-disk block
65 * address format, __le32.
69 struct f2fs_mount_info
{
73 #define F2FS_HAS_FEATURE(sb, mask) \
74 ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
75 #define F2FS_SET_FEATURE(sb, mask) \
76 F2FS_SB(sb)->raw_super->feature |= cpu_to_le32(mask)
77 #define F2FS_CLEAR_FEATURE(sb, mask) \
78 F2FS_SB(sb)->raw_super->feature &= ~cpu_to_le32(mask)
80 #define CRCPOLY_LE 0xedb88320
82 static inline __u32
f2fs_crc32(void *buf
, size_t len
)
84 unsigned char *p
= (unsigned char *)buf
;
85 __u32 crc
= F2FS_SUPER_MAGIC
;
90 for (i
= 0; i
< 8; i
++)
91 crc
= (crc
>> 1) ^ ((crc
& 1) ? CRCPOLY_LE
: 0);
96 static inline bool f2fs_crc_valid(__u32 blk_crc
, void *buf
, size_t buf_size
)
98 return f2fs_crc32(buf
, buf_size
) == blk_crc
;
102 * For checkpoint manager
117 #define DEF_BATCHED_TRIM_SECTIONS 32
118 #define BATCHED_TRIM_SEGMENTS(sbi) \
119 (SM_I(sbi)->trim_sections * (sbi)->segs_per_sec)
120 #define BATCHED_TRIM_BLOCKS(sbi) \
121 (BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg)
132 * For CP/NAT/SIT/SSA readahead
142 /* for the list of ino */
144 ORPHAN_INO
, /* for orphan ino list */
145 APPEND_INO
, /* for append ino list */
146 UPDATE_INO
, /* for update ino list */
147 MAX_INO_ENTRY
, /* max. list */
151 struct list_head list
; /* list head */
152 nid_t ino
; /* inode number */
156 * for the list of directory inodes or gc inodes.
157 * NOTE: there are two slab users for this structure, if we add/modify/delete
158 * fields in structure for one of slab users, it may affect fields or size of
159 * other one, in this condition, it's better to split both of slab and related
163 struct list_head list
; /* list head */
164 struct inode
*inode
; /* vfs inode pointer */
167 /* for the list of blockaddresses to be discarded */
168 struct discard_entry
{
169 struct list_head list
; /* list head */
170 block_t blkaddr
; /* block address to be discarded */
171 int len
; /* # of consecutive blocks of the discard */
174 /* for the list of fsync inodes, used only during recovery */
175 struct fsync_inode_entry
{
176 struct list_head list
; /* list head */
177 struct inode
*inode
; /* vfs inode pointer */
178 block_t blkaddr
; /* block address locating the last fsync */
179 block_t last_dentry
; /* block address locating the last dentry */
180 block_t last_inode
; /* block address locating the last inode */
183 #define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
184 #define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
186 #define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
187 #define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
188 #define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
189 #define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
191 #define MAX_NAT_JENTRIES(sum) (NAT_JOURNAL_ENTRIES - nats_in_cursum(sum))
192 #define MAX_SIT_JENTRIES(sum) (SIT_JOURNAL_ENTRIES - sits_in_cursum(sum))
194 static inline int update_nats_in_cursum(struct f2fs_summary_block
*rs
, int i
)
196 int before
= nats_in_cursum(rs
);
197 rs
->n_nats
= cpu_to_le16(before
+ i
);
201 static inline int update_sits_in_cursum(struct f2fs_summary_block
*rs
, int i
)
203 int before
= sits_in_cursum(rs
);
204 rs
->n_sits
= cpu_to_le16(before
+ i
);
208 static inline bool __has_cursum_space(struct f2fs_summary_block
*sum
, int size
,
211 if (type
== NAT_JOURNAL
)
212 return size
<= MAX_NAT_JENTRIES(sum
);
213 return size
<= MAX_SIT_JENTRIES(sum
);
219 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
220 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
221 #define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
223 #define F2FS_IOCTL_MAGIC 0xf5
224 #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
225 #define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
226 #define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
227 #define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
228 #define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
231 * should be same as XFS_IOC_GOINGDOWN.
232 * Flags for going down operation used by FS_IOC_GOINGDOWN
234 #define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
235 #define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
236 #define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
237 #define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
239 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
241 * ioctl commands in 32 bit emulation
243 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
244 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
248 * For INODE and NODE manager
250 /* for directory operations */
251 struct f2fs_dentry_ptr
{
253 struct f2fs_dir_entry
*dentry
;
254 __u8 (*filename
)[F2FS_SLOT_LEN
];
258 static inline void make_dentry_ptr(struct f2fs_dentry_ptr
*d
,
262 struct f2fs_dentry_block
*t
= (struct f2fs_dentry_block
*)src
;
263 d
->max
= NR_DENTRY_IN_BLOCK
;
264 d
->bitmap
= &t
->dentry_bitmap
;
265 d
->dentry
= t
->dentry
;
266 d
->filename
= t
->filename
;
268 struct f2fs_inline_dentry
*t
= (struct f2fs_inline_dentry
*)src
;
269 d
->max
= NR_INLINE_DENTRY
;
270 d
->bitmap
= &t
->dentry_bitmap
;
271 d
->dentry
= t
->dentry
;
272 d
->filename
= t
->filename
;
277 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
278 * as its node offset to distinguish from index node blocks.
279 * But some bits are used to mark the node block.
281 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
284 ALLOC_NODE
, /* allocate a new node page if needed */
285 LOOKUP_NODE
, /* look up a node without readahead */
287 * look up a node with readahead called
292 #define F2FS_LINK_MAX 32000 /* maximum link count per file */
294 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
296 /* vector size for gang look-up from extent cache that consists of radix tree */
297 #define EXT_TREE_VEC_SIZE 64
299 /* for in-memory extent cache entry */
300 #define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
302 /* number of extent info in extent cache we try to shrink */
303 #define EXTENT_CACHE_SHRINK_NUMBER 128
306 unsigned int fofs
; /* start offset in a file */
307 u32 blk
; /* start block address of the extent */
308 unsigned int len
; /* length of the extent */
312 struct rb_node rb_node
; /* rb node located in rb-tree */
313 struct list_head list
; /* node in global extent list of sbi */
314 struct extent_info ei
; /* extent info */
318 nid_t ino
; /* inode number */
319 struct rb_root root
; /* root of extent info rb-tree */
320 struct extent_node
*cached_en
; /* recently accessed extent node */
321 rwlock_t lock
; /* protect extent info rb-tree */
322 atomic_t refcount
; /* reference count of rb-tree */
323 unsigned int count
; /* # of extent node in rb-tree*/
327 * This structure is taken from ext4_map_blocks.
329 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
331 #define F2FS_MAP_NEW (1 << BH_New)
332 #define F2FS_MAP_MAPPED (1 << BH_Mapped)
333 #define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED)
335 struct f2fs_map_blocks
{
339 unsigned int m_flags
;
343 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
345 #define FADVISE_COLD_BIT 0x01
346 #define FADVISE_LOST_PINO_BIT 0x02
348 #define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
349 #define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
350 #define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
351 #define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
352 #define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
353 #define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
355 #define DEF_DIR_LEVEL 0
357 struct f2fs_inode_info
{
358 struct inode vfs_inode
; /* serve a vfs inode */
359 unsigned long i_flags
; /* keep an inode flags for ioctl */
360 unsigned char i_advise
; /* use to give file attribute hints */
361 unsigned char i_dir_level
; /* use for dentry level for large dir */
362 unsigned int i_current_depth
; /* use only in directory structure */
363 unsigned int i_pino
; /* parent inode number */
364 umode_t i_acl_mode
; /* keep file acl mode temporarily */
366 /* Use below internally in f2fs*/
367 unsigned long flags
; /* use to pass per-file flags */
368 struct rw_semaphore i_sem
; /* protect fi info */
369 atomic_t dirty_pages
; /* # of dirty pages */
370 f2fs_hash_t chash
; /* hash value of given file name */
371 unsigned int clevel
; /* maximum level of given file name */
372 nid_t i_xattr_nid
; /* node id that contains xattrs */
373 unsigned long long xattr_ver
; /* cp version of xattr modification */
374 struct extent_info ext
; /* in-memory extent cache entry */
375 rwlock_t ext_lock
; /* rwlock for single extent cache */
376 struct inode_entry
*dirty_dir
; /* the pointer of dirty dir */
378 struct radix_tree_root inmem_root
; /* radix tree for inmem pages */
379 struct list_head inmem_pages
; /* inmemory pages managed by f2fs */
380 struct mutex inmem_lock
; /* lock for inmemory pages */
383 static inline void get_extent_info(struct extent_info
*ext
,
384 struct f2fs_extent i_ext
)
386 ext
->fofs
= le32_to_cpu(i_ext
.fofs
);
387 ext
->blk
= le32_to_cpu(i_ext
.blk
);
388 ext
->len
= le32_to_cpu(i_ext
.len
);
391 static inline void set_raw_extent(struct extent_info
*ext
,
392 struct f2fs_extent
*i_ext
)
394 i_ext
->fofs
= cpu_to_le32(ext
->fofs
);
395 i_ext
->blk
= cpu_to_le32(ext
->blk
);
396 i_ext
->len
= cpu_to_le32(ext
->len
);
399 static inline void set_extent_info(struct extent_info
*ei
, unsigned int fofs
,
400 u32 blk
, unsigned int len
)
407 static inline bool __is_extent_same(struct extent_info
*ei1
,
408 struct extent_info
*ei2
)
410 return (ei1
->fofs
== ei2
->fofs
&& ei1
->blk
== ei2
->blk
&&
411 ei1
->len
== ei2
->len
);
414 static inline bool __is_extent_mergeable(struct extent_info
*back
,
415 struct extent_info
*front
)
417 return (back
->fofs
+ back
->len
== front
->fofs
&&
418 back
->blk
+ back
->len
== front
->blk
);
421 static inline bool __is_back_mergeable(struct extent_info
*cur
,
422 struct extent_info
*back
)
424 return __is_extent_mergeable(back
, cur
);
427 static inline bool __is_front_mergeable(struct extent_info
*cur
,
428 struct extent_info
*front
)
430 return __is_extent_mergeable(cur
, front
);
433 struct f2fs_nm_info
{
434 block_t nat_blkaddr
; /* base disk address of NAT */
435 nid_t max_nid
; /* maximum possible node ids */
436 nid_t available_nids
; /* maximum available node ids */
437 nid_t next_scan_nid
; /* the next nid to be scanned */
438 unsigned int ram_thresh
; /* control the memory footprint */
440 /* NAT cache management */
441 struct radix_tree_root nat_root
;/* root of the nat entry cache */
442 struct radix_tree_root nat_set_root
;/* root of the nat set cache */
443 struct rw_semaphore nat_tree_lock
; /* protect nat_tree_lock */
444 struct list_head nat_entries
; /* cached nat entry list (clean) */
445 unsigned int nat_cnt
; /* the # of cached nat entries */
446 unsigned int dirty_nat_cnt
; /* total num of nat entries in set */
448 /* free node ids management */
449 struct radix_tree_root free_nid_root
;/* root of the free_nid cache */
450 struct list_head free_nid_list
; /* a list for free nids */
451 spinlock_t free_nid_list_lock
; /* protect free nid list */
452 unsigned int fcnt
; /* the number of free node id */
453 struct mutex build_lock
; /* lock for build free nids */
456 char *nat_bitmap
; /* NAT bitmap pointer */
457 int bitmap_size
; /* bitmap size */
461 * this structure is used as one of function parameters.
462 * all the information are dedicated to a given direct node block determined
463 * by the data offset in a file.
465 struct dnode_of_data
{
466 struct inode
*inode
; /* vfs inode pointer */
467 struct page
*inode_page
; /* its inode page, NULL is possible */
468 struct page
*node_page
; /* cached direct node page */
469 nid_t nid
; /* node id of the direct node block */
470 unsigned int ofs_in_node
; /* data offset in the node page */
471 bool inode_page_locked
; /* inode page is locked or not */
472 block_t data_blkaddr
; /* block address of the node block */
475 static inline void set_new_dnode(struct dnode_of_data
*dn
, struct inode
*inode
,
476 struct page
*ipage
, struct page
*npage
, nid_t nid
)
478 memset(dn
, 0, sizeof(*dn
));
480 dn
->inode_page
= ipage
;
481 dn
->node_page
= npage
;
488 * By default, there are 6 active log areas across the whole main area.
489 * When considering hot and cold data separation to reduce cleaning overhead,
490 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
492 * In the current design, you should not change the numbers intentionally.
493 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
494 * logs individually according to the underlying devices. (default: 6)
495 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
496 * data and 8 for node logs.
498 #define NR_CURSEG_DATA_TYPE (3)
499 #define NR_CURSEG_NODE_TYPE (3)
500 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
503 CURSEG_HOT_DATA
= 0, /* directory entry blocks */
504 CURSEG_WARM_DATA
, /* data blocks */
505 CURSEG_COLD_DATA
, /* multimedia or GCed data blocks */
506 CURSEG_HOT_NODE
, /* direct node blocks of directory files */
507 CURSEG_WARM_NODE
, /* direct node blocks of normal files */
508 CURSEG_COLD_NODE
, /* indirect node blocks */
510 CURSEG_DIRECT_IO
, /* to use for the direct IO path */
514 struct completion wait
;
515 struct llist_node llnode
;
519 struct flush_cmd_control
{
520 struct task_struct
*f2fs_issue_flush
; /* flush thread */
521 wait_queue_head_t flush_wait_queue
; /* waiting queue for wake-up */
522 struct llist_head issue_list
; /* list for command issue */
523 struct llist_node
*dispatch_list
; /* list for command dispatch */
526 struct f2fs_sm_info
{
527 struct sit_info
*sit_info
; /* whole segment information */
528 struct free_segmap_info
*free_info
; /* free segment information */
529 struct dirty_seglist_info
*dirty_info
; /* dirty segment information */
530 struct curseg_info
*curseg_array
; /* active segment information */
532 block_t seg0_blkaddr
; /* block address of 0'th segment */
533 block_t main_blkaddr
; /* start block address of main area */
534 block_t ssa_blkaddr
; /* start block address of SSA area */
536 unsigned int segment_count
; /* total # of segments */
537 unsigned int main_segments
; /* # of segments in main area */
538 unsigned int reserved_segments
; /* # of reserved segments */
539 unsigned int ovp_segments
; /* # of overprovision segments */
541 /* a threshold to reclaim prefree segments */
542 unsigned int rec_prefree_segments
;
544 /* for small discard management */
545 struct list_head discard_list
; /* 4KB discard list */
546 int nr_discards
; /* # of discards in the list */
547 int max_discards
; /* max. discards to be issued */
549 /* for batched trimming */
550 unsigned int trim_sections
; /* # of sections to trim */
552 struct list_head sit_entry_set
; /* sit entry set list */
554 unsigned int ipu_policy
; /* in-place-update policy */
555 unsigned int min_ipu_util
; /* in-place-update threshold */
556 unsigned int min_fsync_blocks
; /* threshold for fsync */
558 /* for flush command control */
559 struct flush_cmd_control
*cmd_control_info
;
567 * COUNT_TYPE for monitoring
569 * f2fs monitors the number of several block types such as on-writeback,
570 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
582 * The below are the page types of bios used in submit_bio().
583 * The available types are:
584 * DATA User data pages. It operates as async mode.
585 * NODE Node pages. It operates as async mode.
586 * META FS metadata pages such as SIT, NAT, CP.
587 * NR_PAGE_TYPE The number of page types.
588 * META_FLUSH Make sure the previous pages are written
589 * with waiting the bio's completion
590 * ... Only can be used with META.
592 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
599 INMEM
, /* the below types are used by tracepoints only. */
605 struct f2fs_io_info
{
606 struct f2fs_sb_info
*sbi
; /* f2fs_sb_info pointer */
607 enum page_type type
; /* contains DATA/NODE/META/META_FLUSH */
608 int rw
; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
609 block_t blk_addr
; /* block address to be written */
610 struct page
*page
; /* page to be written */
613 #define is_read_io(rw) (((rw) & 1) == READ)
614 struct f2fs_bio_info
{
615 struct f2fs_sb_info
*sbi
; /* f2fs superblock */
616 struct bio
*bio
; /* bios to merge */
617 sector_t last_block_in_bio
; /* last block number */
618 struct f2fs_io_info fio
; /* store buffered io info. */
619 struct rw_semaphore io_rwsem
; /* blocking op for bio */
622 /* for inner inode cache management */
623 struct inode_management
{
624 struct radix_tree_root ino_root
; /* ino entry array */
625 spinlock_t ino_lock
; /* for ino entry lock */
626 struct list_head ino_list
; /* inode list head */
627 unsigned long ino_num
; /* number of entries */
630 /* For s_flag in struct f2fs_sb_info */
632 SBI_IS_DIRTY
, /* dirty flag for checkpoint */
633 SBI_IS_CLOSE
, /* specify unmounting */
634 SBI_NEED_FSCK
, /* need fsck.f2fs to fix */
635 SBI_POR_DOING
, /* recovery is doing or not */
638 struct f2fs_sb_info
{
639 struct super_block
*sb
; /* pointer to VFS super block */
640 struct proc_dir_entry
*s_proc
; /* proc entry */
641 struct buffer_head
*raw_super_buf
; /* buffer head of raw sb */
642 struct f2fs_super_block
*raw_super
; /* raw super block pointer */
643 int s_flag
; /* flags for sbi */
645 /* for node-related operations */
646 struct f2fs_nm_info
*nm_info
; /* node manager */
647 struct inode
*node_inode
; /* cache node blocks */
649 /* for segment-related operations */
650 struct f2fs_sm_info
*sm_info
; /* segment manager */
652 /* for bio operations */
653 struct f2fs_bio_info read_io
; /* for read bios */
654 struct f2fs_bio_info write_io
[NR_PAGE_TYPE
]; /* for write bios */
657 struct f2fs_checkpoint
*ckpt
; /* raw checkpoint pointer */
658 struct inode
*meta_inode
; /* cache meta blocks */
659 struct mutex cp_mutex
; /* checkpoint procedure lock */
660 struct rw_semaphore cp_rwsem
; /* blocking FS operations */
661 struct rw_semaphore node_write
; /* locking node writes */
662 struct mutex writepages
; /* mutex for writepages() */
663 wait_queue_head_t cp_wait
;
665 struct inode_management im
[MAX_INO_ENTRY
]; /* manage inode cache */
667 /* for orphan inode, use 0'th array */
668 unsigned int max_orphans
; /* max orphan inodes */
670 /* for directory inode management */
671 struct list_head dir_inode_list
; /* dir inode list */
672 spinlock_t dir_inode_lock
; /* for dir inode list lock */
674 /* for extent tree cache */
675 struct radix_tree_root extent_tree_root
;/* cache extent cache entries */
676 struct rw_semaphore extent_tree_lock
; /* locking extent radix tree */
677 struct list_head extent_list
; /* lru list for shrinker */
678 spinlock_t extent_lock
; /* locking extent lru list */
679 int total_ext_tree
; /* extent tree count */
680 atomic_t total_ext_node
; /* extent info count */
682 /* basic filesystem units */
683 unsigned int log_sectors_per_block
; /* log2 sectors per block */
684 unsigned int log_blocksize
; /* log2 block size */
685 unsigned int blocksize
; /* block size */
686 unsigned int root_ino_num
; /* root inode number*/
687 unsigned int node_ino_num
; /* node inode number*/
688 unsigned int meta_ino_num
; /* meta inode number*/
689 unsigned int log_blocks_per_seg
; /* log2 blocks per segment */
690 unsigned int blocks_per_seg
; /* blocks per segment */
691 unsigned int segs_per_sec
; /* segments per section */
692 unsigned int secs_per_zone
; /* sections per zone */
693 unsigned int total_sections
; /* total section count */
694 unsigned int total_node_count
; /* total node block count */
695 unsigned int total_valid_node_count
; /* valid node block count */
696 unsigned int total_valid_inode_count
; /* valid inode count */
697 int active_logs
; /* # of active logs */
698 int dir_level
; /* directory level */
700 block_t user_block_count
; /* # of user blocks */
701 block_t total_valid_block_count
; /* # of valid blocks */
702 block_t alloc_valid_block_count
; /* # of allocated blocks */
703 block_t discard_blks
; /* discard command candidats */
704 block_t last_valid_block_count
; /* for recovery */
705 u32 s_next_generation
; /* for NFS support */
706 atomic_t nr_pages
[NR_COUNT_TYPE
]; /* # of pages, see count_type */
708 struct f2fs_mount_info mount_opt
; /* mount options */
710 /* for cleaning operations */
711 struct mutex gc_mutex
; /* mutex for GC */
712 struct f2fs_gc_kthread
*gc_thread
; /* GC thread */
713 unsigned int cur_victim_sec
; /* current victim section num */
715 /* maximum # of trials to find a victim segment for SSR and GC */
716 unsigned int max_victim_search
;
719 * for stat information.
720 * one is for the LFS mode, and the other is for the SSR mode.
722 #ifdef CONFIG_F2FS_STAT_FS
723 struct f2fs_stat_info
*stat_info
; /* FS status information */
724 unsigned int segment_count
[2]; /* # of allocated segments */
725 unsigned int block_count
[2]; /* # of allocated blocks */
726 atomic_t inplace_count
; /* # of inplace update */
727 int total_hit_ext
, read_hit_ext
; /* extent cache hit ratio */
728 atomic_t inline_inode
; /* # of inline_data inodes */
729 atomic_t inline_dir
; /* # of inline_dentry inodes */
730 int bg_gc
; /* background gc calls */
731 unsigned int n_dirty_dirs
; /* # of dir inodes */
733 unsigned int last_victim
[2]; /* last victim segment # */
734 spinlock_t stat_lock
; /* lock for stat operations */
736 /* For sysfs suppport */
737 struct kobject s_kobj
;
738 struct completion s_kobj_unregister
;
744 static inline struct f2fs_inode_info
*F2FS_I(struct inode
*inode
)
746 return container_of(inode
, struct f2fs_inode_info
, vfs_inode
);
749 static inline struct f2fs_sb_info
*F2FS_SB(struct super_block
*sb
)
751 return sb
->s_fs_info
;
754 static inline struct f2fs_sb_info
*F2FS_I_SB(struct inode
*inode
)
756 return F2FS_SB(inode
->i_sb
);
759 static inline struct f2fs_sb_info
*F2FS_M_SB(struct address_space
*mapping
)
761 return F2FS_I_SB(mapping
->host
);
764 static inline struct f2fs_sb_info
*F2FS_P_SB(struct page
*page
)
766 return F2FS_M_SB(page
->mapping
);
769 static inline struct f2fs_super_block
*F2FS_RAW_SUPER(struct f2fs_sb_info
*sbi
)
771 return (struct f2fs_super_block
*)(sbi
->raw_super
);
774 static inline struct f2fs_checkpoint
*F2FS_CKPT(struct f2fs_sb_info
*sbi
)
776 return (struct f2fs_checkpoint
*)(sbi
->ckpt
);
779 static inline struct f2fs_node
*F2FS_NODE(struct page
*page
)
781 return (struct f2fs_node
*)page_address(page
);
784 static inline struct f2fs_inode
*F2FS_INODE(struct page
*page
)
786 return &((struct f2fs_node
*)page_address(page
))->i
;
789 static inline struct f2fs_nm_info
*NM_I(struct f2fs_sb_info
*sbi
)
791 return (struct f2fs_nm_info
*)(sbi
->nm_info
);
794 static inline struct f2fs_sm_info
*SM_I(struct f2fs_sb_info
*sbi
)
796 return (struct f2fs_sm_info
*)(sbi
->sm_info
);
799 static inline struct sit_info
*SIT_I(struct f2fs_sb_info
*sbi
)
801 return (struct sit_info
*)(SM_I(sbi
)->sit_info
);
804 static inline struct free_segmap_info
*FREE_I(struct f2fs_sb_info
*sbi
)
806 return (struct free_segmap_info
*)(SM_I(sbi
)->free_info
);
809 static inline struct dirty_seglist_info
*DIRTY_I(struct f2fs_sb_info
*sbi
)
811 return (struct dirty_seglist_info
*)(SM_I(sbi
)->dirty_info
);
814 static inline struct address_space
*META_MAPPING(struct f2fs_sb_info
*sbi
)
816 return sbi
->meta_inode
->i_mapping
;
819 static inline struct address_space
*NODE_MAPPING(struct f2fs_sb_info
*sbi
)
821 return sbi
->node_inode
->i_mapping
;
824 static inline bool is_sbi_flag_set(struct f2fs_sb_info
*sbi
, unsigned int type
)
826 return sbi
->s_flag
& (0x01 << type
);
829 static inline void set_sbi_flag(struct f2fs_sb_info
*sbi
, unsigned int type
)
831 sbi
->s_flag
|= (0x01 << type
);
834 static inline void clear_sbi_flag(struct f2fs_sb_info
*sbi
, unsigned int type
)
836 sbi
->s_flag
&= ~(0x01 << type
);
839 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint
*cp
)
841 return le64_to_cpu(cp
->checkpoint_ver
);
844 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
846 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
847 return ckpt_flags
& f
;
850 static inline void set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
852 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
854 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
857 static inline void clear_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
859 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
861 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
864 static inline void f2fs_lock_op(struct f2fs_sb_info
*sbi
)
866 down_read(&sbi
->cp_rwsem
);
869 static inline void f2fs_unlock_op(struct f2fs_sb_info
*sbi
)
871 up_read(&sbi
->cp_rwsem
);
874 static inline void f2fs_lock_all(struct f2fs_sb_info
*sbi
)
876 f2fs_down_write(&sbi
->cp_rwsem
, &sbi
->cp_mutex
);
879 static inline void f2fs_unlock_all(struct f2fs_sb_info
*sbi
)
881 up_write(&sbi
->cp_rwsem
);
884 static inline int __get_cp_reason(struct f2fs_sb_info
*sbi
)
886 int reason
= CP_SYNC
;
888 if (test_opt(sbi
, FASTBOOT
))
889 reason
= CP_FASTBOOT
;
890 if (is_sbi_flag_set(sbi
, SBI_IS_CLOSE
))
895 static inline bool __remain_node_summaries(int reason
)
897 return (reason
== CP_UMOUNT
|| reason
== CP_FASTBOOT
);
900 static inline bool __exist_node_summaries(struct f2fs_sb_info
*sbi
)
902 return (is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_UMOUNT_FLAG
) ||
903 is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_FASTBOOT_FLAG
));
907 * Check whether the given nid is within node id range.
909 static inline int check_nid_range(struct f2fs_sb_info
*sbi
, nid_t nid
)
911 if (unlikely(nid
< F2FS_ROOT_INO(sbi
)))
913 if (unlikely(nid
>= NM_I(sbi
)->max_nid
))
918 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
921 * Check whether the inode has blocks or not
923 static inline int F2FS_HAS_BLOCKS(struct inode
*inode
)
925 if (F2FS_I(inode
)->i_xattr_nid
)
926 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
+ 1;
928 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
;
931 static inline bool f2fs_has_xattr_block(unsigned int ofs
)
933 return ofs
== XATTR_NODE_OFFSET
;
936 static inline bool inc_valid_block_count(struct f2fs_sb_info
*sbi
,
937 struct inode
*inode
, blkcnt_t count
)
939 block_t valid_block_count
;
941 spin_lock(&sbi
->stat_lock
);
943 sbi
->total_valid_block_count
+ (block_t
)count
;
944 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
945 spin_unlock(&sbi
->stat_lock
);
948 inode
->i_blocks
+= count
;
949 sbi
->total_valid_block_count
= valid_block_count
;
950 sbi
->alloc_valid_block_count
+= (block_t
)count
;
951 spin_unlock(&sbi
->stat_lock
);
955 static inline void dec_valid_block_count(struct f2fs_sb_info
*sbi
,
959 spin_lock(&sbi
->stat_lock
);
960 f2fs_bug_on(sbi
, sbi
->total_valid_block_count
< (block_t
) count
);
961 f2fs_bug_on(sbi
, inode
->i_blocks
< count
);
962 inode
->i_blocks
-= count
;
963 sbi
->total_valid_block_count
-= (block_t
)count
;
964 spin_unlock(&sbi
->stat_lock
);
967 static inline void inc_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
969 atomic_inc(&sbi
->nr_pages
[count_type
]);
970 set_sbi_flag(sbi
, SBI_IS_DIRTY
);
973 static inline void inode_inc_dirty_pages(struct inode
*inode
)
975 atomic_inc(&F2FS_I(inode
)->dirty_pages
);
976 if (S_ISDIR(inode
->i_mode
))
977 inc_page_count(F2FS_I_SB(inode
), F2FS_DIRTY_DENTS
);
980 static inline void dec_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
982 atomic_dec(&sbi
->nr_pages
[count_type
]);
985 static inline void inode_dec_dirty_pages(struct inode
*inode
)
987 if (!S_ISDIR(inode
->i_mode
) && !S_ISREG(inode
->i_mode
))
990 atomic_dec(&F2FS_I(inode
)->dirty_pages
);
992 if (S_ISDIR(inode
->i_mode
))
993 dec_page_count(F2FS_I_SB(inode
), F2FS_DIRTY_DENTS
);
996 static inline int get_pages(struct f2fs_sb_info
*sbi
, int count_type
)
998 return atomic_read(&sbi
->nr_pages
[count_type
]);
1001 static inline int get_dirty_pages(struct inode
*inode
)
1003 return atomic_read(&F2FS_I(inode
)->dirty_pages
);
1006 static inline int get_blocktype_secs(struct f2fs_sb_info
*sbi
, int block_type
)
1008 unsigned int pages_per_sec
= sbi
->segs_per_sec
*
1009 (1 << sbi
->log_blocks_per_seg
);
1010 return ((get_pages(sbi
, block_type
) + pages_per_sec
- 1)
1011 >> sbi
->log_blocks_per_seg
) / sbi
->segs_per_sec
;
1014 static inline block_t
valid_user_blocks(struct f2fs_sb_info
*sbi
)
1016 return sbi
->total_valid_block_count
;
1019 static inline unsigned long __bitmap_size(struct f2fs_sb_info
*sbi
, int flag
)
1021 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1023 /* return NAT or SIT bitmap */
1024 if (flag
== NAT_BITMAP
)
1025 return le32_to_cpu(ckpt
->nat_ver_bitmap_bytesize
);
1026 else if (flag
== SIT_BITMAP
)
1027 return le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
);
1032 static inline block_t
__cp_payload(struct f2fs_sb_info
*sbi
)
1034 return le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_payload
);
1037 static inline void *__bitmap_ptr(struct f2fs_sb_info
*sbi
, int flag
)
1039 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1042 if (__cp_payload(sbi
) > 0) {
1043 if (flag
== NAT_BITMAP
)
1044 return &ckpt
->sit_nat_version_bitmap
;
1046 return (unsigned char *)ckpt
+ F2FS_BLKSIZE
;
1048 offset
= (flag
== NAT_BITMAP
) ?
1049 le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
) : 0;
1050 return &ckpt
->sit_nat_version_bitmap
+ offset
;
1054 static inline block_t
__start_cp_addr(struct f2fs_sb_info
*sbi
)
1057 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1058 unsigned long long ckpt_version
= cur_cp_version(ckpt
);
1060 start_addr
= le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_blkaddr
);
1063 * odd numbered checkpoint should at cp segment 0
1064 * and even segment must be at cp segment 1
1066 if (!(ckpt_version
& 1))
1067 start_addr
+= sbi
->blocks_per_seg
;
1072 static inline block_t
__start_sum_addr(struct f2fs_sb_info
*sbi
)
1074 return le32_to_cpu(F2FS_CKPT(sbi
)->cp_pack_start_sum
);
1077 static inline bool inc_valid_node_count(struct f2fs_sb_info
*sbi
,
1078 struct inode
*inode
)
1080 block_t valid_block_count
;
1081 unsigned int valid_node_count
;
1083 spin_lock(&sbi
->stat_lock
);
1085 valid_block_count
= sbi
->total_valid_block_count
+ 1;
1086 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
1087 spin_unlock(&sbi
->stat_lock
);
1091 valid_node_count
= sbi
->total_valid_node_count
+ 1;
1092 if (unlikely(valid_node_count
> sbi
->total_node_count
)) {
1093 spin_unlock(&sbi
->stat_lock
);
1100 sbi
->alloc_valid_block_count
++;
1101 sbi
->total_valid_node_count
++;
1102 sbi
->total_valid_block_count
++;
1103 spin_unlock(&sbi
->stat_lock
);
1108 static inline void dec_valid_node_count(struct f2fs_sb_info
*sbi
,
1109 struct inode
*inode
)
1111 spin_lock(&sbi
->stat_lock
);
1113 f2fs_bug_on(sbi
, !sbi
->total_valid_block_count
);
1114 f2fs_bug_on(sbi
, !sbi
->total_valid_node_count
);
1115 f2fs_bug_on(sbi
, !inode
->i_blocks
);
1118 sbi
->total_valid_node_count
--;
1119 sbi
->total_valid_block_count
--;
1121 spin_unlock(&sbi
->stat_lock
);
1124 static inline unsigned int valid_node_count(struct f2fs_sb_info
*sbi
)
1126 return sbi
->total_valid_node_count
;
1129 static inline void inc_valid_inode_count(struct f2fs_sb_info
*sbi
)
1131 spin_lock(&sbi
->stat_lock
);
1132 f2fs_bug_on(sbi
, sbi
->total_valid_inode_count
== sbi
->total_node_count
);
1133 sbi
->total_valid_inode_count
++;
1134 spin_unlock(&sbi
->stat_lock
);
1137 static inline void dec_valid_inode_count(struct f2fs_sb_info
*sbi
)
1139 spin_lock(&sbi
->stat_lock
);
1140 f2fs_bug_on(sbi
, !sbi
->total_valid_inode_count
);
1141 sbi
->total_valid_inode_count
--;
1142 spin_unlock(&sbi
->stat_lock
);
1145 static inline unsigned int valid_inode_count(struct f2fs_sb_info
*sbi
)
1147 return sbi
->total_valid_inode_count
;
1150 static inline void f2fs_put_page(struct page
*page
, int unlock
)
1156 f2fs_bug_on(F2FS_P_SB(page
), !PageLocked(page
));
1159 page_cache_release(page
);
1162 static inline void f2fs_put_dnode(struct dnode_of_data
*dn
)
1165 f2fs_put_page(dn
->node_page
, 1);
1166 if (dn
->inode_page
&& dn
->node_page
!= dn
->inode_page
)
1167 f2fs_put_page(dn
->inode_page
, 0);
1168 dn
->node_page
= NULL
;
1169 dn
->inode_page
= NULL
;
1172 static inline struct kmem_cache
*f2fs_kmem_cache_create(const char *name
,
1175 return kmem_cache_create(name
, size
, 0, SLAB_RECLAIM_ACCOUNT
, NULL
);
1178 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache
*cachep
,
1183 entry
= kmem_cache_alloc(cachep
, flags
);
1192 static inline void f2fs_radix_tree_insert(struct radix_tree_root
*root
,
1193 unsigned long index
, void *item
)
1195 while (radix_tree_insert(root
, index
, item
))
1199 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1201 static inline bool IS_INODE(struct page
*page
)
1203 struct f2fs_node
*p
= F2FS_NODE(page
);
1204 return RAW_IS_INODE(p
);
1207 static inline __le32
*blkaddr_in_node(struct f2fs_node
*node
)
1209 return RAW_IS_INODE(node
) ? node
->i
.i_addr
: node
->dn
.addr
;
1212 static inline block_t
datablock_addr(struct page
*node_page
,
1213 unsigned int offset
)
1215 struct f2fs_node
*raw_node
;
1217 raw_node
= F2FS_NODE(node_page
);
1218 addr_array
= blkaddr_in_node(raw_node
);
1219 return le32_to_cpu(addr_array
[offset
]);
1222 static inline int f2fs_test_bit(unsigned int nr
, char *addr
)
1227 mask
= 1 << (7 - (nr
& 0x07));
1228 return mask
& *addr
;
1231 static inline void f2fs_set_bit(unsigned int nr
, char *addr
)
1236 mask
= 1 << (7 - (nr
& 0x07));
1240 static inline void f2fs_clear_bit(unsigned int nr
, char *addr
)
1245 mask
= 1 << (7 - (nr
& 0x07));
1249 static inline int f2fs_test_and_set_bit(unsigned int nr
, char *addr
)
1255 mask
= 1 << (7 - (nr
& 0x07));
1261 static inline int f2fs_test_and_clear_bit(unsigned int nr
, char *addr
)
1267 mask
= 1 << (7 - (nr
& 0x07));
1273 static inline void f2fs_change_bit(unsigned int nr
, char *addr
)
1278 mask
= 1 << (7 - (nr
& 0x07));
1282 /* used for f2fs_inode_info->flags */
1284 FI_NEW_INODE
, /* indicate newly allocated inode */
1285 FI_DIRTY_INODE
, /* indicate inode is dirty or not */
1286 FI_DIRTY_DIR
, /* indicate directory has dirty pages */
1287 FI_INC_LINK
, /* need to increment i_nlink */
1288 FI_ACL_MODE
, /* indicate acl mode */
1289 FI_NO_ALLOC
, /* should not allocate any blocks */
1290 FI_UPDATE_DIR
, /* should update inode block for consistency */
1291 FI_DELAY_IPUT
, /* used for the recovery */
1292 FI_NO_EXTENT
, /* not to use the extent cache */
1293 FI_INLINE_XATTR
, /* used for inline xattr */
1294 FI_INLINE_DATA
, /* used for inline data*/
1295 FI_INLINE_DENTRY
, /* used for inline dentry */
1296 FI_APPEND_WRITE
, /* inode has appended data */
1297 FI_UPDATE_WRITE
, /* inode has in-place-update data */
1298 FI_NEED_IPU
, /* used for ipu per file */
1299 FI_ATOMIC_FILE
, /* indicate atomic file */
1300 FI_VOLATILE_FILE
, /* indicate volatile file */
1301 FI_FIRST_BLOCK_WRITTEN
, /* indicate #0 data block was written */
1302 FI_DROP_CACHE
, /* drop dirty page cache */
1303 FI_DATA_EXIST
, /* indicate data exists */
1304 FI_INLINE_DOTS
, /* indicate inline dot dentries */
1307 static inline void set_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1309 if (!test_bit(flag
, &fi
->flags
))
1310 set_bit(flag
, &fi
->flags
);
1313 static inline int is_inode_flag_set(struct f2fs_inode_info
*fi
, int flag
)
1315 return test_bit(flag
, &fi
->flags
);
1318 static inline void clear_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1320 if (test_bit(flag
, &fi
->flags
))
1321 clear_bit(flag
, &fi
->flags
);
1324 static inline void set_acl_inode(struct f2fs_inode_info
*fi
, umode_t mode
)
1326 fi
->i_acl_mode
= mode
;
1327 set_inode_flag(fi
, FI_ACL_MODE
);
1330 static inline void get_inline_info(struct f2fs_inode_info
*fi
,
1331 struct f2fs_inode
*ri
)
1333 if (ri
->i_inline
& F2FS_INLINE_XATTR
)
1334 set_inode_flag(fi
, FI_INLINE_XATTR
);
1335 if (ri
->i_inline
& F2FS_INLINE_DATA
)
1336 set_inode_flag(fi
, FI_INLINE_DATA
);
1337 if (ri
->i_inline
& F2FS_INLINE_DENTRY
)
1338 set_inode_flag(fi
, FI_INLINE_DENTRY
);
1339 if (ri
->i_inline
& F2FS_DATA_EXIST
)
1340 set_inode_flag(fi
, FI_DATA_EXIST
);
1341 if (ri
->i_inline
& F2FS_INLINE_DOTS
)
1342 set_inode_flag(fi
, FI_INLINE_DOTS
);
1345 static inline void set_raw_inline(struct f2fs_inode_info
*fi
,
1346 struct f2fs_inode
*ri
)
1350 if (is_inode_flag_set(fi
, FI_INLINE_XATTR
))
1351 ri
->i_inline
|= F2FS_INLINE_XATTR
;
1352 if (is_inode_flag_set(fi
, FI_INLINE_DATA
))
1353 ri
->i_inline
|= F2FS_INLINE_DATA
;
1354 if (is_inode_flag_set(fi
, FI_INLINE_DENTRY
))
1355 ri
->i_inline
|= F2FS_INLINE_DENTRY
;
1356 if (is_inode_flag_set(fi
, FI_DATA_EXIST
))
1357 ri
->i_inline
|= F2FS_DATA_EXIST
;
1358 if (is_inode_flag_set(fi
, FI_INLINE_DOTS
))
1359 ri
->i_inline
|= F2FS_INLINE_DOTS
;
1362 static inline int f2fs_has_inline_xattr(struct inode
*inode
)
1364 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_XATTR
);
1367 static inline unsigned int addrs_per_inode(struct f2fs_inode_info
*fi
)
1369 if (f2fs_has_inline_xattr(&fi
->vfs_inode
))
1370 return DEF_ADDRS_PER_INODE
- F2FS_INLINE_XATTR_ADDRS
;
1371 return DEF_ADDRS_PER_INODE
;
1374 static inline void *inline_xattr_addr(struct page
*page
)
1376 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1377 return (void *)&(ri
->i_addr
[DEF_ADDRS_PER_INODE
-
1378 F2FS_INLINE_XATTR_ADDRS
]);
1381 static inline int inline_xattr_size(struct inode
*inode
)
1383 if (f2fs_has_inline_xattr(inode
))
1384 return F2FS_INLINE_XATTR_ADDRS
<< 2;
1389 static inline int f2fs_has_inline_data(struct inode
*inode
)
1391 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DATA
);
1394 static inline void f2fs_clear_inline_inode(struct inode
*inode
)
1396 clear_inode_flag(F2FS_I(inode
), FI_INLINE_DATA
);
1397 clear_inode_flag(F2FS_I(inode
), FI_DATA_EXIST
);
1400 static inline int f2fs_exist_data(struct inode
*inode
)
1402 return is_inode_flag_set(F2FS_I(inode
), FI_DATA_EXIST
);
1405 static inline int f2fs_has_inline_dots(struct inode
*inode
)
1407 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DOTS
);
1410 static inline bool f2fs_is_atomic_file(struct inode
*inode
)
1412 return is_inode_flag_set(F2FS_I(inode
), FI_ATOMIC_FILE
);
1415 static inline bool f2fs_is_volatile_file(struct inode
*inode
)
1417 return is_inode_flag_set(F2FS_I(inode
), FI_VOLATILE_FILE
);
1420 static inline bool f2fs_is_first_block_written(struct inode
*inode
)
1422 return is_inode_flag_set(F2FS_I(inode
), FI_FIRST_BLOCK_WRITTEN
);
1425 static inline bool f2fs_is_drop_cache(struct inode
*inode
)
1427 return is_inode_flag_set(F2FS_I(inode
), FI_DROP_CACHE
);
1430 static inline void *inline_data_addr(struct page
*page
)
1432 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1433 return (void *)&(ri
->i_addr
[1]);
1436 static inline int f2fs_has_inline_dentry(struct inode
*inode
)
1438 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DENTRY
);
1441 static inline void f2fs_dentry_kunmap(struct inode
*dir
, struct page
*page
)
1443 if (!f2fs_has_inline_dentry(dir
))
1447 static inline int is_file(struct inode
*inode
, int type
)
1449 return F2FS_I(inode
)->i_advise
& type
;
1452 static inline void set_file(struct inode
*inode
, int type
)
1454 F2FS_I(inode
)->i_advise
|= type
;
1457 static inline void clear_file(struct inode
*inode
, int type
)
1459 F2FS_I(inode
)->i_advise
&= ~type
;
1462 static inline int f2fs_readonly(struct super_block
*sb
)
1464 return sb
->s_flags
& MS_RDONLY
;
1467 static inline bool f2fs_cp_error(struct f2fs_sb_info
*sbi
)
1469 return is_set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1472 static inline void f2fs_stop_checkpoint(struct f2fs_sb_info
*sbi
)
1474 set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1475 sbi
->sb
->s_flags
|= MS_RDONLY
;
1478 static inline bool is_dot_dotdot(const struct qstr
*str
)
1480 if (str
->len
== 1 && str
->name
[0] == '.')
1483 if (str
->len
== 2 && str
->name
[0] == '.' && str
->name
[1] == '.')
1489 #define get_inode_mode(i) \
1490 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1491 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1493 /* get offset of first page in next direct node */
1494 #define PGOFS_OF_NEXT_DNODE(pgofs, fi) \
1495 ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \
1496 (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \
1497 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi))
1502 int f2fs_sync_file(struct file
*, loff_t
, loff_t
, int);
1503 void truncate_data_blocks(struct dnode_of_data
*);
1504 int truncate_blocks(struct inode
*, u64
, bool);
1505 void f2fs_truncate(struct inode
*);
1506 int f2fs_getattr(struct vfsmount
*, struct dentry
*, struct kstat
*);
1507 int f2fs_setattr(struct dentry
*, struct iattr
*);
1508 int truncate_hole(struct inode
*, pgoff_t
, pgoff_t
);
1509 int truncate_data_blocks_range(struct dnode_of_data
*, int);
1510 long f2fs_ioctl(struct file
*, unsigned int, unsigned long);
1511 long f2fs_compat_ioctl(struct file
*, unsigned int, unsigned long);
1516 void f2fs_set_inode_flags(struct inode
*);
1517 struct inode
*f2fs_iget(struct super_block
*, unsigned long);
1518 int try_to_free_nats(struct f2fs_sb_info
*, int);
1519 void update_inode(struct inode
*, struct page
*);
1520 void update_inode_page(struct inode
*);
1521 int f2fs_write_inode(struct inode
*, struct writeback_control
*);
1522 void f2fs_evict_inode(struct inode
*);
1523 void handle_failed_inode(struct inode
*);
1528 struct dentry
*f2fs_get_parent(struct dentry
*child
);
1533 extern unsigned char f2fs_filetype_table
[F2FS_FT_MAX
];
1534 void set_de_type(struct f2fs_dir_entry
*, umode_t
);
1535 struct f2fs_dir_entry
*find_target_dentry(struct qstr
*, int *,
1536 struct f2fs_dentry_ptr
*);
1537 bool f2fs_fill_dentries(struct dir_context
*, struct f2fs_dentry_ptr
*,
1539 void do_make_empty_dir(struct inode
*, struct inode
*,
1540 struct f2fs_dentry_ptr
*);
1541 struct page
*init_inode_metadata(struct inode
*, struct inode
*,
1542 const struct qstr
*, struct page
*);
1543 void update_parent_metadata(struct inode
*, struct inode
*, unsigned int);
1544 int room_for_filename(const void *, int, int);
1545 void f2fs_drop_nlink(struct inode
*, struct inode
*, struct page
*);
1546 struct f2fs_dir_entry
*f2fs_find_entry(struct inode
*, struct qstr
*,
1548 struct f2fs_dir_entry
*f2fs_parent_dir(struct inode
*, struct page
**);
1549 ino_t
f2fs_inode_by_name(struct inode
*, struct qstr
*);
1550 void f2fs_set_link(struct inode
*, struct f2fs_dir_entry
*,
1551 struct page
*, struct inode
*);
1552 int update_dent_inode(struct inode
*, const struct qstr
*);
1553 void f2fs_update_dentry(nid_t ino
, umode_t mode
, struct f2fs_dentry_ptr
*,
1554 const struct qstr
*, f2fs_hash_t
, unsigned int);
1555 int __f2fs_add_link(struct inode
*, const struct qstr
*, struct inode
*, nid_t
,
1557 void f2fs_delete_entry(struct f2fs_dir_entry
*, struct page
*, struct inode
*,
1559 int f2fs_do_tmpfile(struct inode
*, struct inode
*);
1560 bool f2fs_empty_dir(struct inode
*);
1562 static inline int f2fs_add_link(struct dentry
*dentry
, struct inode
*inode
)
1564 return __f2fs_add_link(d_inode(dentry
->d_parent
), &dentry
->d_name
,
1565 inode
, inode
->i_ino
, inode
->i_mode
);
1571 int f2fs_commit_super(struct f2fs_sb_info
*);
1572 int f2fs_sync_fs(struct super_block
*, int);
1573 extern __printf(3, 4)
1574 void f2fs_msg(struct super_block
*, const char *, const char *, ...);
1579 f2fs_hash_t
f2fs_dentry_hash(const struct qstr
*);
1584 struct dnode_of_data
;
1587 bool available_free_memory(struct f2fs_sb_info
*, int);
1588 int need_dentry_mark(struct f2fs_sb_info
*, nid_t
);
1589 bool is_checkpointed_node(struct f2fs_sb_info
*, nid_t
);
1590 bool need_inode_block_update(struct f2fs_sb_info
*, nid_t
);
1591 void get_node_info(struct f2fs_sb_info
*, nid_t
, struct node_info
*);
1592 int get_dnode_of_data(struct dnode_of_data
*, pgoff_t
, int);
1593 int truncate_inode_blocks(struct inode
*, pgoff_t
);
1594 int truncate_xattr_node(struct inode
*, struct page
*);
1595 int wait_on_node_pages_writeback(struct f2fs_sb_info
*, nid_t
);
1596 void remove_inode_page(struct inode
*);
1597 struct page
*new_inode_page(struct inode
*);
1598 struct page
*new_node_page(struct dnode_of_data
*, unsigned int, struct page
*);
1599 void ra_node_page(struct f2fs_sb_info
*, nid_t
);
1600 struct page
*get_node_page(struct f2fs_sb_info
*, pgoff_t
);
1601 struct page
*get_node_page_ra(struct page
*, int);
1602 void sync_inode_page(struct dnode_of_data
*);
1603 int sync_node_pages(struct f2fs_sb_info
*, nid_t
, struct writeback_control
*);
1604 bool alloc_nid(struct f2fs_sb_info
*, nid_t
*);
1605 void alloc_nid_done(struct f2fs_sb_info
*, nid_t
);
1606 void alloc_nid_failed(struct f2fs_sb_info
*, nid_t
);
1607 void recover_inline_xattr(struct inode
*, struct page
*);
1608 void recover_xattr_data(struct inode
*, struct page
*, block_t
);
1609 int recover_inode_page(struct f2fs_sb_info
*, struct page
*);
1610 int restore_node_summary(struct f2fs_sb_info
*, unsigned int,
1611 struct f2fs_summary_block
*);
1612 void flush_nat_entries(struct f2fs_sb_info
*);
1613 int build_node_manager(struct f2fs_sb_info
*);
1614 void destroy_node_manager(struct f2fs_sb_info
*);
1615 int __init
create_node_manager_caches(void);
1616 void destroy_node_manager_caches(void);
1621 void register_inmem_page(struct inode
*, struct page
*);
1622 void commit_inmem_pages(struct inode
*, bool);
1623 void f2fs_balance_fs(struct f2fs_sb_info
*);
1624 void f2fs_balance_fs_bg(struct f2fs_sb_info
*);
1625 int f2fs_issue_flush(struct f2fs_sb_info
*);
1626 int create_flush_cmd_control(struct f2fs_sb_info
*);
1627 void destroy_flush_cmd_control(struct f2fs_sb_info
*);
1628 void invalidate_blocks(struct f2fs_sb_info
*, block_t
);
1629 void refresh_sit_entry(struct f2fs_sb_info
*, block_t
, block_t
);
1630 void clear_prefree_segments(struct f2fs_sb_info
*, struct cp_control
*);
1631 void release_discard_addrs(struct f2fs_sb_info
*);
1632 void discard_next_dnode(struct f2fs_sb_info
*, block_t
);
1633 int npages_for_summary_flush(struct f2fs_sb_info
*, bool);
1634 void allocate_new_segments(struct f2fs_sb_info
*);
1635 int f2fs_trim_fs(struct f2fs_sb_info
*, struct fstrim_range
*);
1636 struct page
*get_sum_page(struct f2fs_sb_info
*, unsigned int);
1637 void write_meta_page(struct f2fs_sb_info
*, struct page
*);
1638 void write_node_page(unsigned int, struct f2fs_io_info
*);
1639 void write_data_page(struct dnode_of_data
*, struct f2fs_io_info
*);
1640 void rewrite_data_page(struct f2fs_io_info
*);
1641 void f2fs_replace_block(struct f2fs_sb_info
*, struct f2fs_summary
*,
1642 block_t
, block_t
, bool);
1643 void allocate_data_block(struct f2fs_sb_info
*, struct page
*,
1644 block_t
, block_t
*, struct f2fs_summary
*, int);
1645 void f2fs_wait_on_page_writeback(struct page
*, enum page_type
);
1646 void write_data_summaries(struct f2fs_sb_info
*, block_t
);
1647 void write_node_summaries(struct f2fs_sb_info
*, block_t
);
1648 int lookup_journal_in_cursum(struct f2fs_summary_block
*,
1649 int, unsigned int, int);
1650 void flush_sit_entries(struct f2fs_sb_info
*, struct cp_control
*);
1651 int build_segment_manager(struct f2fs_sb_info
*);
1652 void destroy_segment_manager(struct f2fs_sb_info
*);
1653 int __init
create_segment_manager_caches(void);
1654 void destroy_segment_manager_caches(void);
1659 struct page
*grab_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1660 struct page
*get_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1661 bool is_valid_blkaddr(struct f2fs_sb_info
*, block_t
, int);
1662 int ra_meta_pages(struct f2fs_sb_info
*, block_t
, int, int);
1663 void ra_meta_pages_cond(struct f2fs_sb_info
*, pgoff_t
);
1664 long sync_meta_pages(struct f2fs_sb_info
*, enum page_type
, long);
1665 void add_dirty_inode(struct f2fs_sb_info
*, nid_t
, int type
);
1666 void remove_dirty_inode(struct f2fs_sb_info
*, nid_t
, int type
);
1667 void release_dirty_inode(struct f2fs_sb_info
*);
1668 bool exist_written_data(struct f2fs_sb_info
*, nid_t
, int);
1669 int acquire_orphan_inode(struct f2fs_sb_info
*);
1670 void release_orphan_inode(struct f2fs_sb_info
*);
1671 void add_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1672 void remove_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1673 void recover_orphan_inodes(struct f2fs_sb_info
*);
1674 int get_valid_checkpoint(struct f2fs_sb_info
*);
1675 void update_dirty_page(struct inode
*, struct page
*);
1676 void add_dirty_dir_inode(struct inode
*);
1677 void remove_dirty_dir_inode(struct inode
*);
1678 void sync_dirty_dir_inodes(struct f2fs_sb_info
*);
1679 void write_checkpoint(struct f2fs_sb_info
*, struct cp_control
*);
1680 void init_ino_entry_info(struct f2fs_sb_info
*);
1681 int __init
create_checkpoint_caches(void);
1682 void destroy_checkpoint_caches(void);
1687 void f2fs_submit_merged_bio(struct f2fs_sb_info
*, enum page_type
, int);
1688 int f2fs_submit_page_bio(struct f2fs_io_info
*);
1689 void f2fs_submit_page_mbio(struct f2fs_io_info
*);
1690 void set_data_blkaddr(struct dnode_of_data
*);
1691 int reserve_new_block(struct dnode_of_data
*);
1692 int f2fs_reserve_block(struct dnode_of_data
*, pgoff_t
);
1693 void f2fs_shrink_extent_tree(struct f2fs_sb_info
*, int);
1694 void f2fs_destroy_extent_tree(struct inode
*);
1695 void f2fs_init_extent_cache(struct inode
*, struct f2fs_extent
*);
1696 void f2fs_update_extent_cache(struct dnode_of_data
*);
1697 void f2fs_preserve_extent_tree(struct inode
*);
1698 struct page
*get_read_data_page(struct inode
*, pgoff_t
, int);
1699 struct page
*find_data_page(struct inode
*, pgoff_t
);
1700 struct page
*get_lock_data_page(struct inode
*, pgoff_t
);
1701 struct page
*get_new_data_page(struct inode
*, struct page
*, pgoff_t
, bool);
1702 int do_write_data_page(struct f2fs_io_info
*);
1703 int f2fs_fiemap(struct inode
*inode
, struct fiemap_extent_info
*, u64
, u64
);
1704 void init_extent_cache_info(struct f2fs_sb_info
*);
1705 int __init
create_extent_cache(void);
1706 void destroy_extent_cache(void);
1707 void f2fs_invalidate_page(struct page
*, unsigned int, unsigned int);
1708 int f2fs_release_page(struct page
*, gfp_t
);
1713 int start_gc_thread(struct f2fs_sb_info
*);
1714 void stop_gc_thread(struct f2fs_sb_info
*);
1715 block_t
start_bidx_of_node(unsigned int, struct f2fs_inode_info
*);
1716 int f2fs_gc(struct f2fs_sb_info
*);
1717 void build_gc_manager(struct f2fs_sb_info
*);
1722 int recover_fsync_data(struct f2fs_sb_info
*);
1723 bool space_for_roll_forward(struct f2fs_sb_info
*);
1728 #ifdef CONFIG_F2FS_STAT_FS
1729 struct f2fs_stat_info
{
1730 struct list_head stat_list
;
1731 struct f2fs_sb_info
*sbi
;
1732 int all_area_segs
, sit_area_segs
, nat_area_segs
, ssa_area_segs
;
1733 int main_area_segs
, main_area_sections
, main_area_zones
;
1734 int hit_ext
, total_ext
, ext_tree
, ext_node
;
1735 int ndirty_node
, ndirty_dent
, ndirty_dirs
, ndirty_meta
;
1736 int nats
, dirty_nats
, sits
, dirty_sits
, fnids
;
1737 int total_count
, utilization
;
1738 int bg_gc
, inline_inode
, inline_dir
, inmem_pages
, wb_pages
;
1739 unsigned int valid_count
, valid_node_count
, valid_inode_count
;
1740 unsigned int bimodal
, avg_vblocks
;
1741 int util_free
, util_valid
, util_invalid
;
1742 int rsvd_segs
, overp_segs
;
1743 int dirty_count
, node_pages
, meta_pages
;
1744 int prefree_count
, call_count
, cp_count
;
1745 int tot_segs
, node_segs
, data_segs
, free_segs
, free_secs
;
1746 int bg_node_segs
, bg_data_segs
;
1747 int tot_blks
, data_blks
, node_blks
;
1748 int bg_data_blks
, bg_node_blks
;
1749 int curseg
[NR_CURSEG_TYPE
];
1750 int cursec
[NR_CURSEG_TYPE
];
1751 int curzone
[NR_CURSEG_TYPE
];
1753 unsigned int segment_count
[2];
1754 unsigned int block_count
[2];
1755 unsigned int inplace_count
;
1756 unsigned base_mem
, cache_mem
, page_mem
;
1759 static inline struct f2fs_stat_info
*F2FS_STAT(struct f2fs_sb_info
*sbi
)
1761 return (struct f2fs_stat_info
*)sbi
->stat_info
;
1764 #define stat_inc_cp_count(si) ((si)->cp_count++)
1765 #define stat_inc_call_count(si) ((si)->call_count++)
1766 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1767 #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1768 #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
1769 #define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++)
1770 #define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++)
1771 #define stat_inc_inline_inode(inode) \
1773 if (f2fs_has_inline_data(inode)) \
1774 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
1776 #define stat_dec_inline_inode(inode) \
1778 if (f2fs_has_inline_data(inode)) \
1779 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
1781 #define stat_inc_inline_dir(inode) \
1783 if (f2fs_has_inline_dentry(inode)) \
1784 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
1786 #define stat_dec_inline_dir(inode) \
1788 if (f2fs_has_inline_dentry(inode)) \
1789 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
1791 #define stat_inc_seg_type(sbi, curseg) \
1792 ((sbi)->segment_count[(curseg)->alloc_type]++)
1793 #define stat_inc_block_count(sbi, curseg) \
1794 ((sbi)->block_count[(curseg)->alloc_type]++)
1795 #define stat_inc_inplace_blocks(sbi) \
1796 (atomic_inc(&(sbi)->inplace_count))
1797 #define stat_inc_seg_count(sbi, type, gc_type) \
1799 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1801 if (type == SUM_TYPE_DATA) { \
1803 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
1806 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
1810 #define stat_inc_tot_blk_count(si, blks) \
1811 (si->tot_blks += (blks))
1813 #define stat_inc_data_blk_count(sbi, blks, gc_type) \
1815 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1816 stat_inc_tot_blk_count(si, blks); \
1817 si->data_blks += (blks); \
1818 si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \
1821 #define stat_inc_node_blk_count(sbi, blks, gc_type) \
1823 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1824 stat_inc_tot_blk_count(si, blks); \
1825 si->node_blks += (blks); \
1826 si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \
1829 int f2fs_build_stats(struct f2fs_sb_info
*);
1830 void f2fs_destroy_stats(struct f2fs_sb_info
*);
1831 void __init
f2fs_create_root_stats(void);
1832 void f2fs_destroy_root_stats(void);
1834 #define stat_inc_cp_count(si)
1835 #define stat_inc_call_count(si)
1836 #define stat_inc_bggc_count(si)
1837 #define stat_inc_dirty_dir(sbi)
1838 #define stat_dec_dirty_dir(sbi)
1839 #define stat_inc_total_hit(sb)
1840 #define stat_inc_read_hit(sb)
1841 #define stat_inc_inline_inode(inode)
1842 #define stat_dec_inline_inode(inode)
1843 #define stat_inc_inline_dir(inode)
1844 #define stat_dec_inline_dir(inode)
1845 #define stat_inc_seg_type(sbi, curseg)
1846 #define stat_inc_block_count(sbi, curseg)
1847 #define stat_inc_inplace_blocks(sbi)
1848 #define stat_inc_seg_count(sbi, type, gc_type)
1849 #define stat_inc_tot_blk_count(si, blks)
1850 #define stat_inc_data_blk_count(sbi, blks, gc_type)
1851 #define stat_inc_node_blk_count(sbi, blks, gc_type)
1853 static inline int f2fs_build_stats(struct f2fs_sb_info
*sbi
) { return 0; }
1854 static inline void f2fs_destroy_stats(struct f2fs_sb_info
*sbi
) { }
1855 static inline void __init
f2fs_create_root_stats(void) { }
1856 static inline void f2fs_destroy_root_stats(void) { }
1859 extern const struct file_operations f2fs_dir_operations
;
1860 extern const struct file_operations f2fs_file_operations
;
1861 extern const struct inode_operations f2fs_file_inode_operations
;
1862 extern const struct address_space_operations f2fs_dblock_aops
;
1863 extern const struct address_space_operations f2fs_node_aops
;
1864 extern const struct address_space_operations f2fs_meta_aops
;
1865 extern const struct inode_operations f2fs_dir_inode_operations
;
1866 extern const struct inode_operations f2fs_symlink_inode_operations
;
1867 extern const struct inode_operations f2fs_special_inode_operations
;
1868 extern struct kmem_cache
*inode_entry_slab
;
1873 bool f2fs_may_inline_data(struct inode
*);
1874 bool f2fs_may_inline_dentry(struct inode
*);
1875 void read_inline_data(struct page
*, struct page
*);
1876 bool truncate_inline_inode(struct page
*, u64
);
1877 int f2fs_read_inline_data(struct inode
*, struct page
*);
1878 int f2fs_convert_inline_page(struct dnode_of_data
*, struct page
*);
1879 int f2fs_convert_inline_inode(struct inode
*);
1880 int f2fs_write_inline_data(struct inode
*, struct page
*);
1881 bool recover_inline_data(struct inode
*, struct page
*);
1882 struct f2fs_dir_entry
*find_in_inline_dir(struct inode
*, struct qstr
*,
1884 struct f2fs_dir_entry
*f2fs_parent_inline_dir(struct inode
*, struct page
**);
1885 int make_empty_inline_dir(struct inode
*inode
, struct inode
*, struct page
*);
1886 int f2fs_add_inline_entry(struct inode
*, const struct qstr
*, struct inode
*,
1888 void f2fs_delete_inline_entry(struct f2fs_dir_entry
*, struct page
*,
1889 struct inode
*, struct inode
*);
1890 bool f2fs_empty_inline_dir(struct inode
*);
1891 int f2fs_read_inline_dir(struct file
*, struct dir_context
*);