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 sbi->need_fsck = true; \
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_FLUSH_MERGE 0x00000200
50 #define F2FS_MOUNT_NOBARRIER 0x00000400
52 #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
53 #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
54 #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
56 #define ver_after(a, b) (typecheck(unsigned long long, a) && \
57 typecheck(unsigned long long, b) && \
58 ((long long)((a) - (b)) > 0))
60 typedef u32 block_t
; /*
61 * should not change u32, since it is the on-disk block
62 * address format, __le32.
66 struct f2fs_mount_info
{
70 #define CRCPOLY_LE 0xedb88320
72 static inline __u32
f2fs_crc32(void *buf
, size_t len
)
74 unsigned char *p
= (unsigned char *)buf
;
75 __u32 crc
= F2FS_SUPER_MAGIC
;
80 for (i
= 0; i
< 8; i
++)
81 crc
= (crc
>> 1) ^ ((crc
& 1) ? CRCPOLY_LE
: 0);
86 static inline bool f2fs_crc_valid(__u32 blk_crc
, void *buf
, size_t buf_size
)
88 return f2fs_crc32(buf
, buf_size
) == blk_crc
;
92 * For checkpoint manager
100 * For CP/NAT/SIT/SSA readahead
110 /* for the list of ino */
112 ORPHAN_INO
, /* for orphan ino list */
113 APPEND_INO
, /* for append ino list */
114 UPDATE_INO
, /* for update ino list */
115 MAX_INO_ENTRY
, /* max. list */
119 struct list_head list
; /* list head */
120 nid_t ino
; /* inode number */
123 /* for the list of directory inodes */
124 struct dir_inode_entry
{
125 struct list_head list
; /* list head */
126 struct inode
*inode
; /* vfs inode pointer */
129 /* for the list of blockaddresses to be discarded */
130 struct discard_entry
{
131 struct list_head list
; /* list head */
132 block_t blkaddr
; /* block address to be discarded */
133 int len
; /* # of consecutive blocks of the discard */
136 /* for the list of fsync inodes, used only during recovery */
137 struct fsync_inode_entry
{
138 struct list_head list
; /* list head */
139 struct inode
*inode
; /* vfs inode pointer */
140 block_t blkaddr
; /* block address locating the last inode */
143 #define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
144 #define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
146 #define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
147 #define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
148 #define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
149 #define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
151 static inline int update_nats_in_cursum(struct f2fs_summary_block
*rs
, int i
)
153 int before
= nats_in_cursum(rs
);
154 rs
->n_nats
= cpu_to_le16(before
+ i
);
158 static inline int update_sits_in_cursum(struct f2fs_summary_block
*rs
, int i
)
160 int before
= sits_in_cursum(rs
);
161 rs
->n_sits
= cpu_to_le16(before
+ i
);
165 static inline bool __has_cursum_space(struct f2fs_summary_block
*sum
, int size
,
168 if (type
== NAT_JOURNAL
)
169 return nats_in_cursum(sum
) + size
<= NAT_JOURNAL_ENTRIES
;
171 return sits_in_cursum(sum
) + size
<= SIT_JOURNAL_ENTRIES
;
177 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
178 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
180 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
182 * ioctl commands in 32 bit emulation
184 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
185 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
189 * For INODE and NODE manager
192 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
193 * as its node offset to distinguish from index node blocks.
194 * But some bits are used to mark the node block.
196 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
199 ALLOC_NODE
, /* allocate a new node page if needed */
200 LOOKUP_NODE
, /* look up a node without readahead */
202 * look up a node with readahead called
207 #define F2FS_LINK_MAX 32000 /* maximum link count per file */
209 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
211 /* for in-memory extent cache entry */
212 #define F2FS_MIN_EXTENT_LEN 16 /* minimum extent length */
215 rwlock_t ext_lock
; /* rwlock for consistency */
216 unsigned int fofs
; /* start offset in a file */
217 u32 blk_addr
; /* start block address of the extent */
218 unsigned int len
; /* length of the extent */
222 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
224 #define FADVISE_COLD_BIT 0x01
225 #define FADVISE_LOST_PINO_BIT 0x02
227 #define DEF_DIR_LEVEL 0
229 struct f2fs_inode_info
{
230 struct inode vfs_inode
; /* serve a vfs inode */
231 unsigned long i_flags
; /* keep an inode flags for ioctl */
232 unsigned char i_advise
; /* use to give file attribute hints */
233 unsigned char i_dir_level
; /* use for dentry level for large dir */
234 unsigned int i_current_depth
; /* use only in directory structure */
235 unsigned int i_pino
; /* parent inode number */
236 umode_t i_acl_mode
; /* keep file acl mode temporarily */
238 /* Use below internally in f2fs*/
239 unsigned long flags
; /* use to pass per-file flags */
240 struct rw_semaphore i_sem
; /* protect fi info */
241 atomic_t dirty_pages
; /* # of dirty pages */
242 f2fs_hash_t chash
; /* hash value of given file name */
243 unsigned int clevel
; /* maximum level of given file name */
244 nid_t i_xattr_nid
; /* node id that contains xattrs */
245 unsigned long long xattr_ver
; /* cp version of xattr modification */
246 struct extent_info ext
; /* in-memory extent cache entry */
247 struct dir_inode_entry
*dirty_dir
; /* the pointer of dirty dir */
250 static inline void get_extent_info(struct extent_info
*ext
,
251 struct f2fs_extent i_ext
)
253 write_lock(&ext
->ext_lock
);
254 ext
->fofs
= le32_to_cpu(i_ext
.fofs
);
255 ext
->blk_addr
= le32_to_cpu(i_ext
.blk_addr
);
256 ext
->len
= le32_to_cpu(i_ext
.len
);
257 write_unlock(&ext
->ext_lock
);
260 static inline void set_raw_extent(struct extent_info
*ext
,
261 struct f2fs_extent
*i_ext
)
263 read_lock(&ext
->ext_lock
);
264 i_ext
->fofs
= cpu_to_le32(ext
->fofs
);
265 i_ext
->blk_addr
= cpu_to_le32(ext
->blk_addr
);
266 i_ext
->len
= cpu_to_le32(ext
->len
);
267 read_unlock(&ext
->ext_lock
);
270 struct f2fs_nm_info
{
271 block_t nat_blkaddr
; /* base disk address of NAT */
272 nid_t max_nid
; /* maximum possible node ids */
273 nid_t available_nids
; /* maximum available node ids */
274 nid_t next_scan_nid
; /* the next nid to be scanned */
275 unsigned int ram_thresh
; /* control the memory footprint */
277 /* NAT cache management */
278 struct radix_tree_root nat_root
;/* root of the nat entry cache */
279 rwlock_t nat_tree_lock
; /* protect nat_tree_lock */
280 unsigned int nat_cnt
; /* the # of cached nat entries */
281 struct list_head nat_entries
; /* cached nat entry list (clean) */
282 struct list_head dirty_nat_entries
; /* cached nat entry list (dirty) */
283 struct list_head nat_entry_set
; /* nat entry set list */
284 unsigned int dirty_nat_cnt
; /* total num of nat entries in set */
286 /* free node ids management */
287 struct radix_tree_root free_nid_root
;/* root of the free_nid cache */
288 struct list_head free_nid_list
; /* a list for free nids */
289 spinlock_t free_nid_list_lock
; /* protect free nid list */
290 unsigned int fcnt
; /* the number of free node id */
291 struct mutex build_lock
; /* lock for build free nids */
294 char *nat_bitmap
; /* NAT bitmap pointer */
295 int bitmap_size
; /* bitmap size */
299 * this structure is used as one of function parameters.
300 * all the information are dedicated to a given direct node block determined
301 * by the data offset in a file.
303 struct dnode_of_data
{
304 struct inode
*inode
; /* vfs inode pointer */
305 struct page
*inode_page
; /* its inode page, NULL is possible */
306 struct page
*node_page
; /* cached direct node page */
307 nid_t nid
; /* node id of the direct node block */
308 unsigned int ofs_in_node
; /* data offset in the node page */
309 bool inode_page_locked
; /* inode page is locked or not */
310 block_t data_blkaddr
; /* block address of the node block */
313 static inline void set_new_dnode(struct dnode_of_data
*dn
, struct inode
*inode
,
314 struct page
*ipage
, struct page
*npage
, nid_t nid
)
316 memset(dn
, 0, sizeof(*dn
));
318 dn
->inode_page
= ipage
;
319 dn
->node_page
= npage
;
326 * By default, there are 6 active log areas across the whole main area.
327 * When considering hot and cold data separation to reduce cleaning overhead,
328 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
330 * In the current design, you should not change the numbers intentionally.
331 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
332 * logs individually according to the underlying devices. (default: 6)
333 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
334 * data and 8 for node logs.
336 #define NR_CURSEG_DATA_TYPE (3)
337 #define NR_CURSEG_NODE_TYPE (3)
338 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
341 CURSEG_HOT_DATA
= 0, /* directory entry blocks */
342 CURSEG_WARM_DATA
, /* data blocks */
343 CURSEG_COLD_DATA
, /* multimedia or GCed data blocks */
344 CURSEG_HOT_NODE
, /* direct node blocks of directory files */
345 CURSEG_WARM_NODE
, /* direct node blocks of normal files */
346 CURSEG_COLD_NODE
, /* indirect node blocks */
351 struct completion wait
;
352 struct llist_node llnode
;
356 struct flush_cmd_control
{
357 struct task_struct
*f2fs_issue_flush
; /* flush thread */
358 wait_queue_head_t flush_wait_queue
; /* waiting queue for wake-up */
359 struct llist_head issue_list
; /* list for command issue */
360 struct llist_node
*dispatch_list
; /* list for command dispatch */
363 struct f2fs_sm_info
{
364 struct sit_info
*sit_info
; /* whole segment information */
365 struct free_segmap_info
*free_info
; /* free segment information */
366 struct dirty_seglist_info
*dirty_info
; /* dirty segment information */
367 struct curseg_info
*curseg_array
; /* active segment information */
369 block_t seg0_blkaddr
; /* block address of 0'th segment */
370 block_t main_blkaddr
; /* start block address of main area */
371 block_t ssa_blkaddr
; /* start block address of SSA area */
373 unsigned int segment_count
; /* total # of segments */
374 unsigned int main_segments
; /* # of segments in main area */
375 unsigned int reserved_segments
; /* # of reserved segments */
376 unsigned int ovp_segments
; /* # of overprovision segments */
378 /* a threshold to reclaim prefree segments */
379 unsigned int rec_prefree_segments
;
381 /* for small discard management */
382 struct list_head discard_list
; /* 4KB discard list */
383 int nr_discards
; /* # of discards in the list */
384 int max_discards
; /* max. discards to be issued */
386 struct list_head sit_entry_set
; /* sit entry set list */
388 unsigned int ipu_policy
; /* in-place-update policy */
389 unsigned int min_ipu_util
; /* in-place-update threshold */
390 unsigned int min_fsync_blocks
; /* threshold for fsync */
392 /* for flush command control */
393 struct flush_cmd_control
*cmd_control_info
;
401 * COUNT_TYPE for monitoring
403 * f2fs monitors the number of several block types such as on-writeback,
404 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
415 * The below are the page types of bios used in submit_bio().
416 * The available types are:
417 * DATA User data pages. It operates as async mode.
418 * NODE Node pages. It operates as async mode.
419 * META FS metadata pages such as SIT, NAT, CP.
420 * NR_PAGE_TYPE The number of page types.
421 * META_FLUSH Make sure the previous pages are written
422 * with waiting the bio's completion
423 * ... Only can be used with META.
425 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
434 struct f2fs_io_info
{
435 enum page_type type
; /* contains DATA/NODE/META/META_FLUSH */
436 int rw
; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
439 #define is_read_io(rw) (((rw) & 1) == READ)
440 struct f2fs_bio_info
{
441 struct f2fs_sb_info
*sbi
; /* f2fs superblock */
442 struct bio
*bio
; /* bios to merge */
443 sector_t last_block_in_bio
; /* last block number */
444 struct f2fs_io_info fio
; /* store buffered io info. */
445 struct rw_semaphore io_rwsem
; /* blocking op for bio */
448 struct f2fs_sb_info
{
449 struct super_block
*sb
; /* pointer to VFS super block */
450 struct proc_dir_entry
*s_proc
; /* proc entry */
451 struct buffer_head
*raw_super_buf
; /* buffer head of raw sb */
452 struct f2fs_super_block
*raw_super
; /* raw super block pointer */
453 int s_dirty
; /* dirty flag for checkpoint */
454 bool need_fsck
; /* need fsck.f2fs to fix */
456 /* for node-related operations */
457 struct f2fs_nm_info
*nm_info
; /* node manager */
458 struct inode
*node_inode
; /* cache node blocks */
460 /* for segment-related operations */
461 struct f2fs_sm_info
*sm_info
; /* segment manager */
463 /* for bio operations */
464 struct f2fs_bio_info read_io
; /* for read bios */
465 struct f2fs_bio_info write_io
[NR_PAGE_TYPE
]; /* for write bios */
466 struct completion
*wait_io
; /* for completion bios */
469 struct f2fs_checkpoint
*ckpt
; /* raw checkpoint pointer */
470 struct inode
*meta_inode
; /* cache meta blocks */
471 struct mutex cp_mutex
; /* checkpoint procedure lock */
472 struct rw_semaphore cp_rwsem
; /* blocking FS operations */
473 struct rw_semaphore node_write
; /* locking node writes */
474 struct mutex writepages
; /* mutex for writepages() */
475 bool por_doing
; /* recovery is doing or not */
476 wait_queue_head_t cp_wait
;
478 /* for inode management */
479 struct radix_tree_root ino_root
[MAX_INO_ENTRY
]; /* ino entry array */
480 spinlock_t ino_lock
[MAX_INO_ENTRY
]; /* for ino entry lock */
481 struct list_head ino_list
[MAX_INO_ENTRY
]; /* inode list head */
483 /* for orphan inode, use 0'th array */
484 unsigned int n_orphans
; /* # of orphan inodes */
485 unsigned int max_orphans
; /* max orphan inodes */
487 /* for directory inode management */
488 struct list_head dir_inode_list
; /* dir inode list */
489 spinlock_t dir_inode_lock
; /* for dir inode list lock */
491 /* basic filesystem units */
492 unsigned int log_sectors_per_block
; /* log2 sectors per block */
493 unsigned int log_blocksize
; /* log2 block size */
494 unsigned int blocksize
; /* block size */
495 unsigned int root_ino_num
; /* root inode number*/
496 unsigned int node_ino_num
; /* node inode number*/
497 unsigned int meta_ino_num
; /* meta inode number*/
498 unsigned int log_blocks_per_seg
; /* log2 blocks per segment */
499 unsigned int blocks_per_seg
; /* blocks per segment */
500 unsigned int segs_per_sec
; /* segments per section */
501 unsigned int secs_per_zone
; /* sections per zone */
502 unsigned int total_sections
; /* total section count */
503 unsigned int total_node_count
; /* total node block count */
504 unsigned int total_valid_node_count
; /* valid node block count */
505 unsigned int total_valid_inode_count
; /* valid inode count */
506 int active_logs
; /* # of active logs */
507 int dir_level
; /* directory level */
509 block_t user_block_count
; /* # of user blocks */
510 block_t total_valid_block_count
; /* # of valid blocks */
511 block_t alloc_valid_block_count
; /* # of allocated blocks */
512 block_t last_valid_block_count
; /* for recovery */
513 u32 s_next_generation
; /* for NFS support */
514 atomic_t nr_pages
[NR_COUNT_TYPE
]; /* # of pages, see count_type */
516 struct f2fs_mount_info mount_opt
; /* mount options */
518 /* for cleaning operations */
519 struct mutex gc_mutex
; /* mutex for GC */
520 struct f2fs_gc_kthread
*gc_thread
; /* GC thread */
521 unsigned int cur_victim_sec
; /* current victim section num */
523 /* maximum # of trials to find a victim segment for SSR and GC */
524 unsigned int max_victim_search
;
527 * for stat information.
528 * one is for the LFS mode, and the other is for the SSR mode.
530 #ifdef CONFIG_F2FS_STAT_FS
531 struct f2fs_stat_info
*stat_info
; /* FS status information */
532 unsigned int segment_count
[2]; /* # of allocated segments */
533 unsigned int block_count
[2]; /* # of allocated blocks */
534 int total_hit_ext
, read_hit_ext
; /* extent cache hit ratio */
535 int inline_inode
; /* # of inline_data inodes */
536 int bg_gc
; /* background gc calls */
537 unsigned int n_dirty_dirs
; /* # of dir inodes */
539 unsigned int last_victim
[2]; /* last victim segment # */
540 spinlock_t stat_lock
; /* lock for stat operations */
542 /* For sysfs suppport */
543 struct kobject s_kobj
;
544 struct completion s_kobj_unregister
;
550 static inline struct f2fs_inode_info
*F2FS_I(struct inode
*inode
)
552 return container_of(inode
, struct f2fs_inode_info
, vfs_inode
);
555 static inline struct f2fs_sb_info
*F2FS_SB(struct super_block
*sb
)
557 return sb
->s_fs_info
;
560 static inline struct f2fs_sb_info
*F2FS_I_SB(struct inode
*inode
)
562 return F2FS_SB(inode
->i_sb
);
565 static inline struct f2fs_sb_info
*F2FS_M_SB(struct address_space
*mapping
)
567 return F2FS_I_SB(mapping
->host
);
570 static inline struct f2fs_sb_info
*F2FS_P_SB(struct page
*page
)
572 return F2FS_M_SB(page
->mapping
);
575 static inline struct f2fs_super_block
*F2FS_RAW_SUPER(struct f2fs_sb_info
*sbi
)
577 return (struct f2fs_super_block
*)(sbi
->raw_super
);
580 static inline struct f2fs_checkpoint
*F2FS_CKPT(struct f2fs_sb_info
*sbi
)
582 return (struct f2fs_checkpoint
*)(sbi
->ckpt
);
585 static inline struct f2fs_node
*F2FS_NODE(struct page
*page
)
587 return (struct f2fs_node
*)page_address(page
);
590 static inline struct f2fs_inode
*F2FS_INODE(struct page
*page
)
592 return &((struct f2fs_node
*)page_address(page
))->i
;
595 static inline struct f2fs_nm_info
*NM_I(struct f2fs_sb_info
*sbi
)
597 return (struct f2fs_nm_info
*)(sbi
->nm_info
);
600 static inline struct f2fs_sm_info
*SM_I(struct f2fs_sb_info
*sbi
)
602 return (struct f2fs_sm_info
*)(sbi
->sm_info
);
605 static inline struct sit_info
*SIT_I(struct f2fs_sb_info
*sbi
)
607 return (struct sit_info
*)(SM_I(sbi
)->sit_info
);
610 static inline struct free_segmap_info
*FREE_I(struct f2fs_sb_info
*sbi
)
612 return (struct free_segmap_info
*)(SM_I(sbi
)->free_info
);
615 static inline struct dirty_seglist_info
*DIRTY_I(struct f2fs_sb_info
*sbi
)
617 return (struct dirty_seglist_info
*)(SM_I(sbi
)->dirty_info
);
620 static inline struct address_space
*META_MAPPING(struct f2fs_sb_info
*sbi
)
622 return sbi
->meta_inode
->i_mapping
;
625 static inline struct address_space
*NODE_MAPPING(struct f2fs_sb_info
*sbi
)
627 return sbi
->node_inode
->i_mapping
;
630 static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info
*sbi
)
635 static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info
*sbi
)
640 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint
*cp
)
642 return le64_to_cpu(cp
->checkpoint_ver
);
645 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
647 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
648 return ckpt_flags
& f
;
651 static inline void set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
653 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
655 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
658 static inline void clear_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
660 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
662 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
665 static inline void f2fs_lock_op(struct f2fs_sb_info
*sbi
)
667 down_read(&sbi
->cp_rwsem
);
670 static inline void f2fs_unlock_op(struct f2fs_sb_info
*sbi
)
672 up_read(&sbi
->cp_rwsem
);
675 static inline void f2fs_lock_all(struct f2fs_sb_info
*sbi
)
677 f2fs_down_write(&sbi
->cp_rwsem
, &sbi
->cp_mutex
);
680 static inline void f2fs_unlock_all(struct f2fs_sb_info
*sbi
)
682 up_write(&sbi
->cp_rwsem
);
686 * Check whether the given nid is within node id range.
688 static inline int check_nid_range(struct f2fs_sb_info
*sbi
, nid_t nid
)
690 if (unlikely(nid
< F2FS_ROOT_INO(sbi
)))
692 if (unlikely(nid
>= NM_I(sbi
)->max_nid
))
697 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
700 * Check whether the inode has blocks or not
702 static inline int F2FS_HAS_BLOCKS(struct inode
*inode
)
704 if (F2FS_I(inode
)->i_xattr_nid
)
705 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
+ 1;
707 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
;
710 static inline bool f2fs_has_xattr_block(unsigned int ofs
)
712 return ofs
== XATTR_NODE_OFFSET
;
715 static inline bool inc_valid_block_count(struct f2fs_sb_info
*sbi
,
716 struct inode
*inode
, blkcnt_t count
)
718 block_t valid_block_count
;
720 spin_lock(&sbi
->stat_lock
);
722 sbi
->total_valid_block_count
+ (block_t
)count
;
723 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
724 spin_unlock(&sbi
->stat_lock
);
727 inode
->i_blocks
+= count
;
728 sbi
->total_valid_block_count
= valid_block_count
;
729 sbi
->alloc_valid_block_count
+= (block_t
)count
;
730 spin_unlock(&sbi
->stat_lock
);
734 static inline void dec_valid_block_count(struct f2fs_sb_info
*sbi
,
738 spin_lock(&sbi
->stat_lock
);
739 f2fs_bug_on(sbi
, sbi
->total_valid_block_count
< (block_t
) count
);
740 f2fs_bug_on(sbi
, inode
->i_blocks
< count
);
741 inode
->i_blocks
-= count
;
742 sbi
->total_valid_block_count
-= (block_t
)count
;
743 spin_unlock(&sbi
->stat_lock
);
746 static inline void inc_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
748 atomic_inc(&sbi
->nr_pages
[count_type
]);
749 F2FS_SET_SB_DIRT(sbi
);
752 static inline void inode_inc_dirty_pages(struct inode
*inode
)
754 atomic_inc(&F2FS_I(inode
)->dirty_pages
);
755 if (S_ISDIR(inode
->i_mode
))
756 inc_page_count(F2FS_I_SB(inode
), F2FS_DIRTY_DENTS
);
759 static inline void dec_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
761 atomic_dec(&sbi
->nr_pages
[count_type
]);
764 static inline void inode_dec_dirty_pages(struct inode
*inode
)
766 if (!S_ISDIR(inode
->i_mode
) && !S_ISREG(inode
->i_mode
))
769 atomic_dec(&F2FS_I(inode
)->dirty_pages
);
771 if (S_ISDIR(inode
->i_mode
))
772 dec_page_count(F2FS_I_SB(inode
), F2FS_DIRTY_DENTS
);
775 static inline int get_pages(struct f2fs_sb_info
*sbi
, int count_type
)
777 return atomic_read(&sbi
->nr_pages
[count_type
]);
780 static inline int get_dirty_pages(struct inode
*inode
)
782 return atomic_read(&F2FS_I(inode
)->dirty_pages
);
785 static inline int get_blocktype_secs(struct f2fs_sb_info
*sbi
, int block_type
)
787 unsigned int pages_per_sec
= sbi
->segs_per_sec
*
788 (1 << sbi
->log_blocks_per_seg
);
789 return ((get_pages(sbi
, block_type
) + pages_per_sec
- 1)
790 >> sbi
->log_blocks_per_seg
) / sbi
->segs_per_sec
;
793 static inline block_t
valid_user_blocks(struct f2fs_sb_info
*sbi
)
795 return sbi
->total_valid_block_count
;
798 static inline unsigned long __bitmap_size(struct f2fs_sb_info
*sbi
, int flag
)
800 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
802 /* return NAT or SIT bitmap */
803 if (flag
== NAT_BITMAP
)
804 return le32_to_cpu(ckpt
->nat_ver_bitmap_bytesize
);
805 else if (flag
== SIT_BITMAP
)
806 return le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
);
811 static inline void *__bitmap_ptr(struct f2fs_sb_info
*sbi
, int flag
)
813 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
816 if (le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_payload
) > 0) {
817 if (flag
== NAT_BITMAP
)
818 return &ckpt
->sit_nat_version_bitmap
;
820 return (unsigned char *)ckpt
+ F2FS_BLKSIZE
;
822 offset
= (flag
== NAT_BITMAP
) ?
823 le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
) : 0;
824 return &ckpt
->sit_nat_version_bitmap
+ offset
;
828 static inline block_t
__start_cp_addr(struct f2fs_sb_info
*sbi
)
831 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
832 unsigned long long ckpt_version
= cur_cp_version(ckpt
);
834 start_addr
= le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_blkaddr
);
837 * odd numbered checkpoint should at cp segment 0
838 * and even segment must be at cp segment 1
840 if (!(ckpt_version
& 1))
841 start_addr
+= sbi
->blocks_per_seg
;
846 static inline block_t
__start_sum_addr(struct f2fs_sb_info
*sbi
)
848 return le32_to_cpu(F2FS_CKPT(sbi
)->cp_pack_start_sum
);
851 static inline bool inc_valid_node_count(struct f2fs_sb_info
*sbi
,
854 block_t valid_block_count
;
855 unsigned int valid_node_count
;
857 spin_lock(&sbi
->stat_lock
);
859 valid_block_count
= sbi
->total_valid_block_count
+ 1;
860 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
861 spin_unlock(&sbi
->stat_lock
);
865 valid_node_count
= sbi
->total_valid_node_count
+ 1;
866 if (unlikely(valid_node_count
> sbi
->total_node_count
)) {
867 spin_unlock(&sbi
->stat_lock
);
874 sbi
->alloc_valid_block_count
++;
875 sbi
->total_valid_node_count
++;
876 sbi
->total_valid_block_count
++;
877 spin_unlock(&sbi
->stat_lock
);
882 static inline void dec_valid_node_count(struct f2fs_sb_info
*sbi
,
885 spin_lock(&sbi
->stat_lock
);
887 f2fs_bug_on(sbi
, !sbi
->total_valid_block_count
);
888 f2fs_bug_on(sbi
, !sbi
->total_valid_node_count
);
889 f2fs_bug_on(sbi
, !inode
->i_blocks
);
892 sbi
->total_valid_node_count
--;
893 sbi
->total_valid_block_count
--;
895 spin_unlock(&sbi
->stat_lock
);
898 static inline unsigned int valid_node_count(struct f2fs_sb_info
*sbi
)
900 return sbi
->total_valid_node_count
;
903 static inline void inc_valid_inode_count(struct f2fs_sb_info
*sbi
)
905 spin_lock(&sbi
->stat_lock
);
906 f2fs_bug_on(sbi
, sbi
->total_valid_inode_count
== sbi
->total_node_count
);
907 sbi
->total_valid_inode_count
++;
908 spin_unlock(&sbi
->stat_lock
);
911 static inline void dec_valid_inode_count(struct f2fs_sb_info
*sbi
)
913 spin_lock(&sbi
->stat_lock
);
914 f2fs_bug_on(sbi
, !sbi
->total_valid_inode_count
);
915 sbi
->total_valid_inode_count
--;
916 spin_unlock(&sbi
->stat_lock
);
919 static inline unsigned int valid_inode_count(struct f2fs_sb_info
*sbi
)
921 return sbi
->total_valid_inode_count
;
924 static inline void f2fs_put_page(struct page
*page
, int unlock
)
930 f2fs_bug_on(F2FS_P_SB(page
), !PageLocked(page
));
933 page_cache_release(page
);
936 static inline void f2fs_put_dnode(struct dnode_of_data
*dn
)
939 f2fs_put_page(dn
->node_page
, 1);
940 if (dn
->inode_page
&& dn
->node_page
!= dn
->inode_page
)
941 f2fs_put_page(dn
->inode_page
, 0);
942 dn
->node_page
= NULL
;
943 dn
->inode_page
= NULL
;
946 static inline struct kmem_cache
*f2fs_kmem_cache_create(const char *name
,
949 return kmem_cache_create(name
, size
, 0, SLAB_RECLAIM_ACCOUNT
, NULL
);
952 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache
*cachep
,
957 entry
= kmem_cache_alloc(cachep
, flags
);
966 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
968 static inline bool IS_INODE(struct page
*page
)
970 struct f2fs_node
*p
= F2FS_NODE(page
);
971 return RAW_IS_INODE(p
);
974 static inline __le32
*blkaddr_in_node(struct f2fs_node
*node
)
976 return RAW_IS_INODE(node
) ? node
->i
.i_addr
: node
->dn
.addr
;
979 static inline block_t
datablock_addr(struct page
*node_page
,
982 struct f2fs_node
*raw_node
;
984 raw_node
= F2FS_NODE(node_page
);
985 addr_array
= blkaddr_in_node(raw_node
);
986 return le32_to_cpu(addr_array
[offset
]);
989 static inline int f2fs_test_bit(unsigned int nr
, char *addr
)
994 mask
= 1 << (7 - (nr
& 0x07));
998 static inline int f2fs_set_bit(unsigned int nr
, char *addr
)
1004 mask
= 1 << (7 - (nr
& 0x07));
1010 static inline int f2fs_clear_bit(unsigned int nr
, char *addr
)
1016 mask
= 1 << (7 - (nr
& 0x07));
1022 /* used for f2fs_inode_info->flags */
1024 FI_NEW_INODE
, /* indicate newly allocated inode */
1025 FI_DIRTY_INODE
, /* indicate inode is dirty or not */
1026 FI_DIRTY_DIR
, /* indicate directory has dirty pages */
1027 FI_INC_LINK
, /* need to increment i_nlink */
1028 FI_ACL_MODE
, /* indicate acl mode */
1029 FI_NO_ALLOC
, /* should not allocate any blocks */
1030 FI_UPDATE_DIR
, /* should update inode block for consistency */
1031 FI_DELAY_IPUT
, /* used for the recovery */
1032 FI_NO_EXTENT
, /* not to use the extent cache */
1033 FI_INLINE_XATTR
, /* used for inline xattr */
1034 FI_INLINE_DATA
, /* used for inline data*/
1035 FI_APPEND_WRITE
, /* inode has appended data */
1036 FI_UPDATE_WRITE
, /* inode has in-place-update data */
1037 FI_NEED_IPU
, /* used fo ipu for fdatasync */
1040 static inline void set_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1042 if (!test_bit(flag
, &fi
->flags
))
1043 set_bit(flag
, &fi
->flags
);
1046 static inline int is_inode_flag_set(struct f2fs_inode_info
*fi
, int flag
)
1048 return test_bit(flag
, &fi
->flags
);
1051 static inline void clear_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1053 if (test_bit(flag
, &fi
->flags
))
1054 clear_bit(flag
, &fi
->flags
);
1057 static inline void set_acl_inode(struct f2fs_inode_info
*fi
, umode_t mode
)
1059 fi
->i_acl_mode
= mode
;
1060 set_inode_flag(fi
, FI_ACL_MODE
);
1063 static inline int cond_clear_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1065 if (is_inode_flag_set(fi
, FI_ACL_MODE
)) {
1066 clear_inode_flag(fi
, FI_ACL_MODE
);
1072 static inline void get_inline_info(struct f2fs_inode_info
*fi
,
1073 struct f2fs_inode
*ri
)
1075 if (ri
->i_inline
& F2FS_INLINE_XATTR
)
1076 set_inode_flag(fi
, FI_INLINE_XATTR
);
1077 if (ri
->i_inline
& F2FS_INLINE_DATA
)
1078 set_inode_flag(fi
, FI_INLINE_DATA
);
1081 static inline void set_raw_inline(struct f2fs_inode_info
*fi
,
1082 struct f2fs_inode
*ri
)
1086 if (is_inode_flag_set(fi
, FI_INLINE_XATTR
))
1087 ri
->i_inline
|= F2FS_INLINE_XATTR
;
1088 if (is_inode_flag_set(fi
, FI_INLINE_DATA
))
1089 ri
->i_inline
|= F2FS_INLINE_DATA
;
1092 static inline int f2fs_has_inline_xattr(struct inode
*inode
)
1094 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_XATTR
);
1097 static inline unsigned int addrs_per_inode(struct f2fs_inode_info
*fi
)
1099 if (f2fs_has_inline_xattr(&fi
->vfs_inode
))
1100 return DEF_ADDRS_PER_INODE
- F2FS_INLINE_XATTR_ADDRS
;
1101 return DEF_ADDRS_PER_INODE
;
1104 static inline void *inline_xattr_addr(struct page
*page
)
1106 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1107 return (void *)&(ri
->i_addr
[DEF_ADDRS_PER_INODE
-
1108 F2FS_INLINE_XATTR_ADDRS
]);
1111 static inline int inline_xattr_size(struct inode
*inode
)
1113 if (f2fs_has_inline_xattr(inode
))
1114 return F2FS_INLINE_XATTR_ADDRS
<< 2;
1119 static inline int f2fs_has_inline_data(struct inode
*inode
)
1121 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DATA
);
1124 static inline void *inline_data_addr(struct page
*page
)
1126 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1127 return (void *)&(ri
->i_addr
[1]);
1130 static inline int f2fs_readonly(struct super_block
*sb
)
1132 return sb
->s_flags
& MS_RDONLY
;
1135 static inline bool f2fs_cp_error(struct f2fs_sb_info
*sbi
)
1137 return is_set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1140 static inline void f2fs_stop_checkpoint(struct f2fs_sb_info
*sbi
)
1142 set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1143 sbi
->sb
->s_flags
|= MS_RDONLY
;
1146 #define get_inode_mode(i) \
1147 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1148 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1150 /* get offset of first page in next direct node */
1151 #define PGOFS_OF_NEXT_DNODE(pgofs, fi) \
1152 ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \
1153 (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \
1154 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi))
1159 int f2fs_sync_file(struct file
*, loff_t
, loff_t
, int);
1160 void truncate_data_blocks(struct dnode_of_data
*);
1161 int truncate_blocks(struct inode
*, u64
, bool);
1162 void f2fs_truncate(struct inode
*);
1163 int f2fs_getattr(struct vfsmount
*, struct dentry
*, struct kstat
*);
1164 int f2fs_setattr(struct dentry
*, struct iattr
*);
1165 int truncate_hole(struct inode
*, pgoff_t
, pgoff_t
);
1166 int truncate_data_blocks_range(struct dnode_of_data
*, int);
1167 long f2fs_ioctl(struct file
*, unsigned int, unsigned long);
1168 long f2fs_compat_ioctl(struct file
*, unsigned int, unsigned long);
1173 void f2fs_set_inode_flags(struct inode
*);
1174 struct inode
*f2fs_iget(struct super_block
*, unsigned long);
1175 int try_to_free_nats(struct f2fs_sb_info
*, int);
1176 void update_inode(struct inode
*, struct page
*);
1177 void update_inode_page(struct inode
*);
1178 int f2fs_write_inode(struct inode
*, struct writeback_control
*);
1179 void f2fs_evict_inode(struct inode
*);
1184 struct dentry
*f2fs_get_parent(struct dentry
*child
);
1189 struct f2fs_dir_entry
*f2fs_find_entry(struct inode
*, struct qstr
*,
1191 struct f2fs_dir_entry
*f2fs_parent_dir(struct inode
*, struct page
**);
1192 ino_t
f2fs_inode_by_name(struct inode
*, struct qstr
*);
1193 void f2fs_set_link(struct inode
*, struct f2fs_dir_entry
*,
1194 struct page
*, struct inode
*);
1195 int update_dent_inode(struct inode
*, const struct qstr
*);
1196 int __f2fs_add_link(struct inode
*, const struct qstr
*, struct inode
*);
1197 void f2fs_delete_entry(struct f2fs_dir_entry
*, struct page
*, struct inode
*);
1198 int f2fs_do_tmpfile(struct inode
*, struct inode
*);
1199 int f2fs_make_empty(struct inode
*, struct inode
*);
1200 bool f2fs_empty_dir(struct inode
*);
1202 static inline int f2fs_add_link(struct dentry
*dentry
, struct inode
*inode
)
1204 return __f2fs_add_link(dentry
->d_parent
->d_inode
, &dentry
->d_name
,
1211 int f2fs_sync_fs(struct super_block
*, int);
1212 extern __printf(3, 4)
1213 void f2fs_msg(struct super_block
*, const char *, const char *, ...);
1218 f2fs_hash_t
f2fs_dentry_hash(const struct qstr
*);
1223 struct dnode_of_data
;
1226 bool available_free_memory(struct f2fs_sb_info
*, int);
1227 int is_checkpointed_node(struct f2fs_sb_info
*, nid_t
);
1228 bool fsync_mark_done(struct f2fs_sb_info
*, nid_t
);
1229 void fsync_mark_clear(struct f2fs_sb_info
*, nid_t
);
1230 void get_node_info(struct f2fs_sb_info
*, nid_t
, struct node_info
*);
1231 int get_dnode_of_data(struct dnode_of_data
*, pgoff_t
, int);
1232 int truncate_inode_blocks(struct inode
*, pgoff_t
);
1233 int truncate_xattr_node(struct inode
*, struct page
*);
1234 int wait_on_node_pages_writeback(struct f2fs_sb_info
*, nid_t
);
1235 void remove_inode_page(struct inode
*);
1236 struct page
*new_inode_page(struct inode
*);
1237 struct page
*new_node_page(struct dnode_of_data
*, unsigned int, struct page
*);
1238 void ra_node_page(struct f2fs_sb_info
*, nid_t
);
1239 struct page
*get_node_page(struct f2fs_sb_info
*, pgoff_t
);
1240 struct page
*get_node_page_ra(struct page
*, int);
1241 void sync_inode_page(struct dnode_of_data
*);
1242 int sync_node_pages(struct f2fs_sb_info
*, nid_t
, struct writeback_control
*);
1243 bool alloc_nid(struct f2fs_sb_info
*, nid_t
*);
1244 void alloc_nid_done(struct f2fs_sb_info
*, nid_t
);
1245 void alloc_nid_failed(struct f2fs_sb_info
*, nid_t
);
1246 void recover_inline_xattr(struct inode
*, struct page
*);
1247 void recover_xattr_data(struct inode
*, struct page
*, block_t
);
1248 int recover_inode_page(struct f2fs_sb_info
*, struct page
*);
1249 int restore_node_summary(struct f2fs_sb_info
*, unsigned int,
1250 struct f2fs_summary_block
*);
1251 void flush_nat_entries(struct f2fs_sb_info
*);
1252 int build_node_manager(struct f2fs_sb_info
*);
1253 void destroy_node_manager(struct f2fs_sb_info
*);
1254 int __init
create_node_manager_caches(void);
1255 void destroy_node_manager_caches(void);
1260 void f2fs_balance_fs(struct f2fs_sb_info
*);
1261 void f2fs_balance_fs_bg(struct f2fs_sb_info
*);
1262 int f2fs_issue_flush(struct f2fs_sb_info
*);
1263 int create_flush_cmd_control(struct f2fs_sb_info
*);
1264 void destroy_flush_cmd_control(struct f2fs_sb_info
*);
1265 void invalidate_blocks(struct f2fs_sb_info
*, block_t
);
1266 void refresh_sit_entry(struct f2fs_sb_info
*, block_t
, block_t
);
1267 void clear_prefree_segments(struct f2fs_sb_info
*);
1268 void discard_next_dnode(struct f2fs_sb_info
*, block_t
);
1269 int npages_for_summary_flush(struct f2fs_sb_info
*);
1270 void allocate_new_segments(struct f2fs_sb_info
*);
1271 struct page
*get_sum_page(struct f2fs_sb_info
*, unsigned int);
1272 void write_meta_page(struct f2fs_sb_info
*, struct page
*);
1273 void write_node_page(struct f2fs_sb_info
*, struct page
*,
1274 struct f2fs_io_info
*, unsigned int, block_t
, block_t
*);
1275 void write_data_page(struct page
*, struct dnode_of_data
*, block_t
*,
1276 struct f2fs_io_info
*);
1277 void rewrite_data_page(struct page
*, block_t
, struct f2fs_io_info
*);
1278 void recover_data_page(struct f2fs_sb_info
*, struct page
*,
1279 struct f2fs_summary
*, block_t
, block_t
);
1280 void allocate_data_block(struct f2fs_sb_info
*, struct page
*,
1281 block_t
, block_t
*, struct f2fs_summary
*, int);
1282 void f2fs_wait_on_page_writeback(struct page
*, enum page_type
);
1283 void write_data_summaries(struct f2fs_sb_info
*, block_t
);
1284 void write_node_summaries(struct f2fs_sb_info
*, block_t
);
1285 int lookup_journal_in_cursum(struct f2fs_summary_block
*,
1286 int, unsigned int, int);
1287 void flush_sit_entries(struct f2fs_sb_info
*);
1288 int build_segment_manager(struct f2fs_sb_info
*);
1289 void destroy_segment_manager(struct f2fs_sb_info
*);
1290 int __init
create_segment_manager_caches(void);
1291 void destroy_segment_manager_caches(void);
1296 struct page
*grab_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1297 struct page
*get_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1298 struct page
*get_meta_page_ra(struct f2fs_sb_info
*, pgoff_t
);
1299 int ra_meta_pages(struct f2fs_sb_info
*, block_t
, int, int);
1300 long sync_meta_pages(struct f2fs_sb_info
*, enum page_type
, long);
1301 void add_dirty_inode(struct f2fs_sb_info
*, nid_t
, int type
);
1302 void remove_dirty_inode(struct f2fs_sb_info
*, nid_t
, int type
);
1303 void release_dirty_inode(struct f2fs_sb_info
*);
1304 bool exist_written_data(struct f2fs_sb_info
*, nid_t
, int);
1305 int acquire_orphan_inode(struct f2fs_sb_info
*);
1306 void release_orphan_inode(struct f2fs_sb_info
*);
1307 void add_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1308 void remove_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1309 void recover_orphan_inodes(struct f2fs_sb_info
*);
1310 int get_valid_checkpoint(struct f2fs_sb_info
*);
1311 void update_dirty_page(struct inode
*, struct page
*);
1312 void add_dirty_dir_inode(struct inode
*);
1313 void remove_dirty_dir_inode(struct inode
*);
1314 void sync_dirty_dir_inodes(struct f2fs_sb_info
*);
1315 void write_checkpoint(struct f2fs_sb_info
*, bool);
1316 void init_ino_entry_info(struct f2fs_sb_info
*);
1317 int __init
create_checkpoint_caches(void);
1318 void destroy_checkpoint_caches(void);
1323 void f2fs_submit_merged_bio(struct f2fs_sb_info
*, enum page_type
, int);
1324 int f2fs_submit_page_bio(struct f2fs_sb_info
*, struct page
*, block_t
, int);
1325 void f2fs_submit_page_mbio(struct f2fs_sb_info
*, struct page
*, block_t
,
1326 struct f2fs_io_info
*);
1327 int reserve_new_block(struct dnode_of_data
*);
1328 int f2fs_reserve_block(struct dnode_of_data
*, pgoff_t
);
1329 void update_extent_cache(block_t
, struct dnode_of_data
*);
1330 struct page
*find_data_page(struct inode
*, pgoff_t
, bool);
1331 struct page
*get_lock_data_page(struct inode
*, pgoff_t
);
1332 struct page
*get_new_data_page(struct inode
*, struct page
*, pgoff_t
, bool);
1333 int do_write_data_page(struct page
*, struct f2fs_io_info
*);
1334 int f2fs_fiemap(struct inode
*inode
, struct fiemap_extent_info
*, u64
, u64
);
1339 int start_gc_thread(struct f2fs_sb_info
*);
1340 void stop_gc_thread(struct f2fs_sb_info
*);
1341 block_t
start_bidx_of_node(unsigned int, struct f2fs_inode_info
*);
1342 int f2fs_gc(struct f2fs_sb_info
*);
1343 void build_gc_manager(struct f2fs_sb_info
*);
1344 int __init
create_gc_caches(void);
1345 void destroy_gc_caches(void);
1350 int recover_fsync_data(struct f2fs_sb_info
*);
1351 bool space_for_roll_forward(struct f2fs_sb_info
*);
1356 #ifdef CONFIG_F2FS_STAT_FS
1357 struct f2fs_stat_info
{
1358 struct list_head stat_list
;
1359 struct f2fs_sb_info
*sbi
;
1360 int all_area_segs
, sit_area_segs
, nat_area_segs
, ssa_area_segs
;
1361 int main_area_segs
, main_area_sections
, main_area_zones
;
1362 int hit_ext
, total_ext
;
1363 int ndirty_node
, ndirty_dent
, ndirty_dirs
, ndirty_meta
;
1364 int nats
, sits
, fnids
;
1365 int total_count
, utilization
;
1366 int bg_gc
, inline_inode
;
1367 unsigned int valid_count
, valid_node_count
, valid_inode_count
;
1368 unsigned int bimodal
, avg_vblocks
;
1369 int util_free
, util_valid
, util_invalid
;
1370 int rsvd_segs
, overp_segs
;
1371 int dirty_count
, node_pages
, meta_pages
;
1372 int prefree_count
, call_count
, cp_count
;
1373 int tot_segs
, node_segs
, data_segs
, free_segs
, free_secs
;
1374 int tot_blks
, data_blks
, node_blks
;
1375 int curseg
[NR_CURSEG_TYPE
];
1376 int cursec
[NR_CURSEG_TYPE
];
1377 int curzone
[NR_CURSEG_TYPE
];
1379 unsigned int segment_count
[2];
1380 unsigned int block_count
[2];
1381 unsigned base_mem
, cache_mem
;
1384 static inline struct f2fs_stat_info
*F2FS_STAT(struct f2fs_sb_info
*sbi
)
1386 return (struct f2fs_stat_info
*)sbi
->stat_info
;
1389 #define stat_inc_cp_count(si) ((si)->cp_count++)
1390 #define stat_inc_call_count(si) ((si)->call_count++)
1391 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1392 #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1393 #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
1394 #define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++)
1395 #define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++)
1396 #define stat_inc_inline_inode(inode) \
1398 if (f2fs_has_inline_data(inode)) \
1399 ((F2FS_I_SB(inode))->inline_inode++); \
1401 #define stat_dec_inline_inode(inode) \
1403 if (f2fs_has_inline_data(inode)) \
1404 ((F2FS_I_SB(inode))->inline_inode--); \
1407 #define stat_inc_seg_type(sbi, curseg) \
1408 ((sbi)->segment_count[(curseg)->alloc_type]++)
1409 #define stat_inc_block_count(sbi, curseg) \
1410 ((sbi)->block_count[(curseg)->alloc_type]++)
1412 #define stat_inc_seg_count(sbi, type) \
1414 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1416 if (type == SUM_TYPE_DATA) \
1422 #define stat_inc_tot_blk_count(si, blks) \
1423 (si->tot_blks += (blks))
1425 #define stat_inc_data_blk_count(sbi, blks) \
1427 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1428 stat_inc_tot_blk_count(si, blks); \
1429 si->data_blks += (blks); \
1432 #define stat_inc_node_blk_count(sbi, blks) \
1434 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1435 stat_inc_tot_blk_count(si, blks); \
1436 si->node_blks += (blks); \
1439 int f2fs_build_stats(struct f2fs_sb_info
*);
1440 void f2fs_destroy_stats(struct f2fs_sb_info
*);
1441 void __init
f2fs_create_root_stats(void);
1442 void f2fs_destroy_root_stats(void);
1444 #define stat_inc_cp_count(si)
1445 #define stat_inc_call_count(si)
1446 #define stat_inc_bggc_count(si)
1447 #define stat_inc_dirty_dir(sbi)
1448 #define stat_dec_dirty_dir(sbi)
1449 #define stat_inc_total_hit(sb)
1450 #define stat_inc_read_hit(sb)
1451 #define stat_inc_inline_inode(inode)
1452 #define stat_dec_inline_inode(inode)
1453 #define stat_inc_seg_type(sbi, curseg)
1454 #define stat_inc_block_count(sbi, curseg)
1455 #define stat_inc_seg_count(si, type)
1456 #define stat_inc_tot_blk_count(si, blks)
1457 #define stat_inc_data_blk_count(si, blks)
1458 #define stat_inc_node_blk_count(sbi, blks)
1460 static inline int f2fs_build_stats(struct f2fs_sb_info
*sbi
) { return 0; }
1461 static inline void f2fs_destroy_stats(struct f2fs_sb_info
*sbi
) { }
1462 static inline void __init
f2fs_create_root_stats(void) { }
1463 static inline void f2fs_destroy_root_stats(void) { }
1466 extern const struct file_operations f2fs_dir_operations
;
1467 extern const struct file_operations f2fs_file_operations
;
1468 extern const struct inode_operations f2fs_file_inode_operations
;
1469 extern const struct address_space_operations f2fs_dblock_aops
;
1470 extern const struct address_space_operations f2fs_node_aops
;
1471 extern const struct address_space_operations f2fs_meta_aops
;
1472 extern const struct inode_operations f2fs_dir_inode_operations
;
1473 extern const struct inode_operations f2fs_symlink_inode_operations
;
1474 extern const struct inode_operations f2fs_special_inode_operations
;
1479 bool f2fs_may_inline(struct inode
*);
1480 int f2fs_read_inline_data(struct inode
*, struct page
*);
1481 int f2fs_convert_inline_data(struct inode
*, pgoff_t
, struct page
*);
1482 int f2fs_write_inline_data(struct inode
*, struct page
*, unsigned int);
1483 void truncate_inline_data(struct inode
*, u64
);
1484 bool recover_inline_data(struct inode
*, struct page
*);