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_INLINE_DENTRY 0x00000200
50 #define F2FS_MOUNT_FLUSH_MERGE 0x00000400
51 #define F2FS_MOUNT_NOBARRIER 0x00000800
53 #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
54 #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
55 #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
57 #define ver_after(a, b) (typecheck(unsigned long long, a) && \
58 typecheck(unsigned long long, b) && \
59 ((long long)((a) - (b)) > 0))
61 typedef u32 block_t
; /*
62 * should not change u32, since it is the on-disk block
63 * address format, __le32.
67 struct f2fs_mount_info
{
71 #define CRCPOLY_LE 0xedb88320
73 static inline __u32
f2fs_crc32(void *buf
, size_t len
)
75 unsigned char *p
= (unsigned char *)buf
;
76 __u32 crc
= F2FS_SUPER_MAGIC
;
81 for (i
= 0; i
< 8; i
++)
82 crc
= (crc
>> 1) ^ ((crc
& 1) ? CRCPOLY_LE
: 0);
87 static inline bool f2fs_crc_valid(__u32 blk_crc
, void *buf
, size_t buf_size
)
89 return f2fs_crc32(buf
, buf_size
) == blk_crc
;
93 * For checkpoint manager
115 * For CP/NAT/SIT/SSA readahead
125 /* for the list of ino */
127 ORPHAN_INO
, /* for orphan ino list */
128 APPEND_INO
, /* for append ino list */
129 UPDATE_INO
, /* for update ino list */
130 MAX_INO_ENTRY
, /* max. list */
134 struct list_head list
; /* list head */
135 nid_t ino
; /* inode number */
138 /* for the list of directory inodes */
139 struct dir_inode_entry
{
140 struct list_head list
; /* list head */
141 struct inode
*inode
; /* vfs inode pointer */
144 /* for the list of blockaddresses to be discarded */
145 struct discard_entry
{
146 struct list_head list
; /* list head */
147 block_t blkaddr
; /* block address to be discarded */
148 int len
; /* # of consecutive blocks of the discard */
151 /* for the list of fsync inodes, used only during recovery */
152 struct fsync_inode_entry
{
153 struct list_head list
; /* list head */
154 struct inode
*inode
; /* vfs inode pointer */
155 block_t blkaddr
; /* block address locating the last fsync */
156 block_t last_dentry
; /* block address locating the last dentry */
157 block_t last_inode
; /* block address locating the last inode */
160 #define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
161 #define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
163 #define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
164 #define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
165 #define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
166 #define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
168 #define MAX_NAT_JENTRIES(sum) (NAT_JOURNAL_ENTRIES - nats_in_cursum(sum))
169 #define MAX_SIT_JENTRIES(sum) (SIT_JOURNAL_ENTRIES - sits_in_cursum(sum))
171 static inline int update_nats_in_cursum(struct f2fs_summary_block
*rs
, int i
)
173 int before
= nats_in_cursum(rs
);
174 rs
->n_nats
= cpu_to_le16(before
+ i
);
178 static inline int update_sits_in_cursum(struct f2fs_summary_block
*rs
, int i
)
180 int before
= sits_in_cursum(rs
);
181 rs
->n_sits
= cpu_to_le16(before
+ i
);
185 static inline bool __has_cursum_space(struct f2fs_summary_block
*sum
, int size
,
188 if (type
== NAT_JOURNAL
)
189 return size
<= MAX_NAT_JENTRIES(sum
);
190 return size
<= MAX_SIT_JENTRIES(sum
);
196 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
197 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
199 #define F2FS_IOCTL_MAGIC 0xf5
200 #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
201 #define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
202 #define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
204 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
206 * ioctl commands in 32 bit emulation
208 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
209 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
213 * For INODE and NODE manager
215 /* for directory operations */
216 struct f2fs_dentry_ptr
{
218 struct f2fs_dir_entry
*dentry
;
219 __u8 (*filename
)[F2FS_SLOT_LEN
];
223 static inline void make_dentry_ptr(struct f2fs_dentry_ptr
*d
,
227 struct f2fs_dentry_block
*t
= (struct f2fs_dentry_block
*)src
;
228 d
->max
= NR_DENTRY_IN_BLOCK
;
229 d
->bitmap
= &t
->dentry_bitmap
;
230 d
->dentry
= t
->dentry
;
231 d
->filename
= t
->filename
;
233 struct f2fs_inline_dentry
*t
= (struct f2fs_inline_dentry
*)src
;
234 d
->max
= NR_INLINE_DENTRY
;
235 d
->bitmap
= &t
->dentry_bitmap
;
236 d
->dentry
= t
->dentry
;
237 d
->filename
= t
->filename
;
242 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
243 * as its node offset to distinguish from index node blocks.
244 * But some bits are used to mark the node block.
246 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
249 ALLOC_NODE
, /* allocate a new node page if needed */
250 LOOKUP_NODE
, /* look up a node without readahead */
252 * look up a node with readahead called
257 #define F2FS_LINK_MAX 32000 /* maximum link count per file */
259 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
261 /* for in-memory extent cache entry */
262 #define F2FS_MIN_EXTENT_LEN 16 /* minimum extent length */
265 rwlock_t ext_lock
; /* rwlock for consistency */
266 unsigned int fofs
; /* start offset in a file */
267 u32 blk_addr
; /* start block address of the extent */
268 unsigned int len
; /* length of the extent */
272 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
274 #define FADVISE_COLD_BIT 0x01
275 #define FADVISE_LOST_PINO_BIT 0x02
277 #define DEF_DIR_LEVEL 0
279 struct f2fs_inode_info
{
280 struct inode vfs_inode
; /* serve a vfs inode */
281 unsigned long i_flags
; /* keep an inode flags for ioctl */
282 unsigned char i_advise
; /* use to give file attribute hints */
283 unsigned char i_dir_level
; /* use for dentry level for large dir */
284 unsigned int i_current_depth
; /* use only in directory structure */
285 unsigned int i_pino
; /* parent inode number */
286 umode_t i_acl_mode
; /* keep file acl mode temporarily */
288 /* Use below internally in f2fs*/
289 unsigned long flags
; /* use to pass per-file flags */
290 struct rw_semaphore i_sem
; /* protect fi info */
291 atomic_t dirty_pages
; /* # of dirty pages */
292 f2fs_hash_t chash
; /* hash value of given file name */
293 unsigned int clevel
; /* maximum level of given file name */
294 nid_t i_xattr_nid
; /* node id that contains xattrs */
295 unsigned long long xattr_ver
; /* cp version of xattr modification */
296 struct extent_info ext
; /* in-memory extent cache entry */
297 struct dir_inode_entry
*dirty_dir
; /* the pointer of dirty dir */
299 struct radix_tree_root inmem_root
; /* radix tree for inmem pages */
300 struct list_head inmem_pages
; /* inmemory pages managed by f2fs */
301 struct mutex inmem_lock
; /* lock for inmemory pages */
304 static inline void get_extent_info(struct extent_info
*ext
,
305 struct f2fs_extent i_ext
)
307 write_lock(&ext
->ext_lock
);
308 ext
->fofs
= le32_to_cpu(i_ext
.fofs
);
309 ext
->blk_addr
= le32_to_cpu(i_ext
.blk_addr
);
310 ext
->len
= le32_to_cpu(i_ext
.len
);
311 write_unlock(&ext
->ext_lock
);
314 static inline void set_raw_extent(struct extent_info
*ext
,
315 struct f2fs_extent
*i_ext
)
317 read_lock(&ext
->ext_lock
);
318 i_ext
->fofs
= cpu_to_le32(ext
->fofs
);
319 i_ext
->blk_addr
= cpu_to_le32(ext
->blk_addr
);
320 i_ext
->len
= cpu_to_le32(ext
->len
);
321 read_unlock(&ext
->ext_lock
);
324 struct f2fs_nm_info
{
325 block_t nat_blkaddr
; /* base disk address of NAT */
326 nid_t max_nid
; /* maximum possible node ids */
327 nid_t available_nids
; /* maximum available node ids */
328 nid_t next_scan_nid
; /* the next nid to be scanned */
329 unsigned int ram_thresh
; /* control the memory footprint */
331 /* NAT cache management */
332 struct radix_tree_root nat_root
;/* root of the nat entry cache */
333 struct radix_tree_root nat_set_root
;/* root of the nat set cache */
334 rwlock_t nat_tree_lock
; /* protect nat_tree_lock */
335 struct list_head nat_entries
; /* cached nat entry list (clean) */
336 unsigned int nat_cnt
; /* the # of cached nat entries */
337 unsigned int dirty_nat_cnt
; /* total num of nat entries in set */
339 /* free node ids management */
340 struct radix_tree_root free_nid_root
;/* root of the free_nid cache */
341 struct list_head free_nid_list
; /* a list for free nids */
342 spinlock_t free_nid_list_lock
; /* protect free nid list */
343 unsigned int fcnt
; /* the number of free node id */
344 struct mutex build_lock
; /* lock for build free nids */
347 char *nat_bitmap
; /* NAT bitmap pointer */
348 int bitmap_size
; /* bitmap size */
352 * this structure is used as one of function parameters.
353 * all the information are dedicated to a given direct node block determined
354 * by the data offset in a file.
356 struct dnode_of_data
{
357 struct inode
*inode
; /* vfs inode pointer */
358 struct page
*inode_page
; /* its inode page, NULL is possible */
359 struct page
*node_page
; /* cached direct node page */
360 nid_t nid
; /* node id of the direct node block */
361 unsigned int ofs_in_node
; /* data offset in the node page */
362 bool inode_page_locked
; /* inode page is locked or not */
363 block_t data_blkaddr
; /* block address of the node block */
366 static inline void set_new_dnode(struct dnode_of_data
*dn
, struct inode
*inode
,
367 struct page
*ipage
, struct page
*npage
, nid_t nid
)
369 memset(dn
, 0, sizeof(*dn
));
371 dn
->inode_page
= ipage
;
372 dn
->node_page
= npage
;
379 * By default, there are 6 active log areas across the whole main area.
380 * When considering hot and cold data separation to reduce cleaning overhead,
381 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
383 * In the current design, you should not change the numbers intentionally.
384 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
385 * logs individually according to the underlying devices. (default: 6)
386 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
387 * data and 8 for node logs.
389 #define NR_CURSEG_DATA_TYPE (3)
390 #define NR_CURSEG_NODE_TYPE (3)
391 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
394 CURSEG_HOT_DATA
= 0, /* directory entry blocks */
395 CURSEG_WARM_DATA
, /* data blocks */
396 CURSEG_COLD_DATA
, /* multimedia or GCed data blocks */
397 CURSEG_HOT_NODE
, /* direct node blocks of directory files */
398 CURSEG_WARM_NODE
, /* direct node blocks of normal files */
399 CURSEG_COLD_NODE
, /* indirect node blocks */
404 struct completion wait
;
405 struct llist_node llnode
;
409 struct flush_cmd_control
{
410 struct task_struct
*f2fs_issue_flush
; /* flush thread */
411 wait_queue_head_t flush_wait_queue
; /* waiting queue for wake-up */
412 struct llist_head issue_list
; /* list for command issue */
413 struct llist_node
*dispatch_list
; /* list for command dispatch */
416 struct f2fs_sm_info
{
417 struct sit_info
*sit_info
; /* whole segment information */
418 struct free_segmap_info
*free_info
; /* free segment information */
419 struct dirty_seglist_info
*dirty_info
; /* dirty segment information */
420 struct curseg_info
*curseg_array
; /* active segment information */
422 block_t seg0_blkaddr
; /* block address of 0'th segment */
423 block_t main_blkaddr
; /* start block address of main area */
424 block_t ssa_blkaddr
; /* start block address of SSA area */
426 unsigned int segment_count
; /* total # of segments */
427 unsigned int main_segments
; /* # of segments in main area */
428 unsigned int reserved_segments
; /* # of reserved segments */
429 unsigned int ovp_segments
; /* # of overprovision segments */
431 /* a threshold to reclaim prefree segments */
432 unsigned int rec_prefree_segments
;
434 /* for small discard management */
435 struct list_head discard_list
; /* 4KB discard list */
436 int nr_discards
; /* # of discards in the list */
437 int max_discards
; /* max. discards to be issued */
439 struct list_head sit_entry_set
; /* sit entry set list */
441 unsigned int ipu_policy
; /* in-place-update policy */
442 unsigned int min_ipu_util
; /* in-place-update threshold */
443 unsigned int min_fsync_blocks
; /* threshold for fsync */
445 /* for flush command control */
446 struct flush_cmd_control
*cmd_control_info
;
454 * COUNT_TYPE for monitoring
456 * f2fs monitors the number of several block types such as on-writeback,
457 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
468 * The below are the page types of bios used in submit_bio().
469 * The available types are:
470 * DATA User data pages. It operates as async mode.
471 * NODE Node pages. It operates as async mode.
472 * META FS metadata pages such as SIT, NAT, CP.
473 * NR_PAGE_TYPE The number of page types.
474 * META_FLUSH Make sure the previous pages are written
475 * with waiting the bio's completion
476 * ... Only can be used with META.
478 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
487 struct f2fs_io_info
{
488 enum page_type type
; /* contains DATA/NODE/META/META_FLUSH */
489 int rw
; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
492 #define is_read_io(rw) (((rw) & 1) == READ)
493 struct f2fs_bio_info
{
494 struct f2fs_sb_info
*sbi
; /* f2fs superblock */
495 struct bio
*bio
; /* bios to merge */
496 sector_t last_block_in_bio
; /* last block number */
497 struct f2fs_io_info fio
; /* store buffered io info. */
498 struct rw_semaphore io_rwsem
; /* blocking op for bio */
501 struct f2fs_sb_info
{
502 struct super_block
*sb
; /* pointer to VFS super block */
503 struct proc_dir_entry
*s_proc
; /* proc entry */
504 struct buffer_head
*raw_super_buf
; /* buffer head of raw sb */
505 struct f2fs_super_block
*raw_super
; /* raw super block pointer */
506 int s_dirty
; /* dirty flag for checkpoint */
507 bool need_fsck
; /* need fsck.f2fs to fix */
509 /* for node-related operations */
510 struct f2fs_nm_info
*nm_info
; /* node manager */
511 struct inode
*node_inode
; /* cache node blocks */
513 /* for segment-related operations */
514 struct f2fs_sm_info
*sm_info
; /* segment manager */
516 /* for bio operations */
517 struct f2fs_bio_info read_io
; /* for read bios */
518 struct f2fs_bio_info write_io
[NR_PAGE_TYPE
]; /* for write bios */
519 struct completion
*wait_io
; /* for completion bios */
522 struct f2fs_checkpoint
*ckpt
; /* raw checkpoint pointer */
523 struct inode
*meta_inode
; /* cache meta blocks */
524 struct mutex cp_mutex
; /* checkpoint procedure lock */
525 struct rw_semaphore cp_rwsem
; /* blocking FS operations */
526 struct rw_semaphore node_write
; /* locking node writes */
527 struct mutex writepages
; /* mutex for writepages() */
528 bool por_doing
; /* recovery is doing or not */
529 wait_queue_head_t cp_wait
;
531 /* for inode management */
532 struct radix_tree_root ino_root
[MAX_INO_ENTRY
]; /* ino entry array */
533 spinlock_t ino_lock
[MAX_INO_ENTRY
]; /* for ino entry lock */
534 struct list_head ino_list
[MAX_INO_ENTRY
]; /* inode list head */
536 /* for orphan inode, use 0'th array */
537 unsigned int n_orphans
; /* # of orphan inodes */
538 unsigned int max_orphans
; /* max orphan inodes */
540 /* for directory inode management */
541 struct list_head dir_inode_list
; /* dir inode list */
542 spinlock_t dir_inode_lock
; /* for dir inode list lock */
544 /* basic filesystem units */
545 unsigned int log_sectors_per_block
; /* log2 sectors per block */
546 unsigned int log_blocksize
; /* log2 block size */
547 unsigned int blocksize
; /* block size */
548 unsigned int root_ino_num
; /* root inode number*/
549 unsigned int node_ino_num
; /* node inode number*/
550 unsigned int meta_ino_num
; /* meta inode number*/
551 unsigned int log_blocks_per_seg
; /* log2 blocks per segment */
552 unsigned int blocks_per_seg
; /* blocks per segment */
553 unsigned int segs_per_sec
; /* segments per section */
554 unsigned int secs_per_zone
; /* sections per zone */
555 unsigned int total_sections
; /* total section count */
556 unsigned int total_node_count
; /* total node block count */
557 unsigned int total_valid_node_count
; /* valid node block count */
558 unsigned int total_valid_inode_count
; /* valid inode count */
559 int active_logs
; /* # of active logs */
560 int dir_level
; /* directory level */
562 block_t user_block_count
; /* # of user blocks */
563 block_t total_valid_block_count
; /* # of valid blocks */
564 block_t alloc_valid_block_count
; /* # of allocated blocks */
565 block_t last_valid_block_count
; /* for recovery */
566 u32 s_next_generation
; /* for NFS support */
567 atomic_t nr_pages
[NR_COUNT_TYPE
]; /* # of pages, see count_type */
569 struct f2fs_mount_info mount_opt
; /* mount options */
571 /* for cleaning operations */
572 struct mutex gc_mutex
; /* mutex for GC */
573 struct f2fs_gc_kthread
*gc_thread
; /* GC thread */
574 unsigned int cur_victim_sec
; /* current victim section num */
576 /* maximum # of trials to find a victim segment for SSR and GC */
577 unsigned int max_victim_search
;
580 * for stat information.
581 * one is for the LFS mode, and the other is for the SSR mode.
583 #ifdef CONFIG_F2FS_STAT_FS
584 struct f2fs_stat_info
*stat_info
; /* FS status information */
585 unsigned int segment_count
[2]; /* # of allocated segments */
586 unsigned int block_count
[2]; /* # of allocated blocks */
587 int total_hit_ext
, read_hit_ext
; /* extent cache hit ratio */
588 int inline_inode
; /* # of inline_data inodes */
589 int inline_dir
; /* # of inline_dentry inodes */
590 int bg_gc
; /* background gc calls */
591 unsigned int n_dirty_dirs
; /* # of dir inodes */
593 unsigned int last_victim
[2]; /* last victim segment # */
594 spinlock_t stat_lock
; /* lock for stat operations */
596 /* For sysfs suppport */
597 struct kobject s_kobj
;
598 struct completion s_kobj_unregister
;
604 static inline struct f2fs_inode_info
*F2FS_I(struct inode
*inode
)
606 return container_of(inode
, struct f2fs_inode_info
, vfs_inode
);
609 static inline struct f2fs_sb_info
*F2FS_SB(struct super_block
*sb
)
611 return sb
->s_fs_info
;
614 static inline struct f2fs_sb_info
*F2FS_I_SB(struct inode
*inode
)
616 return F2FS_SB(inode
->i_sb
);
619 static inline struct f2fs_sb_info
*F2FS_M_SB(struct address_space
*mapping
)
621 return F2FS_I_SB(mapping
->host
);
624 static inline struct f2fs_sb_info
*F2FS_P_SB(struct page
*page
)
626 return F2FS_M_SB(page
->mapping
);
629 static inline struct f2fs_super_block
*F2FS_RAW_SUPER(struct f2fs_sb_info
*sbi
)
631 return (struct f2fs_super_block
*)(sbi
->raw_super
);
634 static inline struct f2fs_checkpoint
*F2FS_CKPT(struct f2fs_sb_info
*sbi
)
636 return (struct f2fs_checkpoint
*)(sbi
->ckpt
);
639 static inline struct f2fs_node
*F2FS_NODE(struct page
*page
)
641 return (struct f2fs_node
*)page_address(page
);
644 static inline struct f2fs_inode
*F2FS_INODE(struct page
*page
)
646 return &((struct f2fs_node
*)page_address(page
))->i
;
649 static inline struct f2fs_nm_info
*NM_I(struct f2fs_sb_info
*sbi
)
651 return (struct f2fs_nm_info
*)(sbi
->nm_info
);
654 static inline struct f2fs_sm_info
*SM_I(struct f2fs_sb_info
*sbi
)
656 return (struct f2fs_sm_info
*)(sbi
->sm_info
);
659 static inline struct sit_info
*SIT_I(struct f2fs_sb_info
*sbi
)
661 return (struct sit_info
*)(SM_I(sbi
)->sit_info
);
664 static inline struct free_segmap_info
*FREE_I(struct f2fs_sb_info
*sbi
)
666 return (struct free_segmap_info
*)(SM_I(sbi
)->free_info
);
669 static inline struct dirty_seglist_info
*DIRTY_I(struct f2fs_sb_info
*sbi
)
671 return (struct dirty_seglist_info
*)(SM_I(sbi
)->dirty_info
);
674 static inline struct address_space
*META_MAPPING(struct f2fs_sb_info
*sbi
)
676 return sbi
->meta_inode
->i_mapping
;
679 static inline struct address_space
*NODE_MAPPING(struct f2fs_sb_info
*sbi
)
681 return sbi
->node_inode
->i_mapping
;
684 static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info
*sbi
)
689 static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info
*sbi
)
694 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint
*cp
)
696 return le64_to_cpu(cp
->checkpoint_ver
);
699 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
701 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
702 return ckpt_flags
& f
;
705 static inline void set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
707 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
709 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
712 static inline void clear_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
714 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
716 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
719 static inline void f2fs_lock_op(struct f2fs_sb_info
*sbi
)
721 down_read(&sbi
->cp_rwsem
);
724 static inline void f2fs_unlock_op(struct f2fs_sb_info
*sbi
)
726 up_read(&sbi
->cp_rwsem
);
729 static inline void f2fs_lock_all(struct f2fs_sb_info
*sbi
)
731 f2fs_down_write(&sbi
->cp_rwsem
, &sbi
->cp_mutex
);
734 static inline void f2fs_unlock_all(struct f2fs_sb_info
*sbi
)
736 up_write(&sbi
->cp_rwsem
);
740 * Check whether the given nid is within node id range.
742 static inline int check_nid_range(struct f2fs_sb_info
*sbi
, nid_t nid
)
744 if (unlikely(nid
< F2FS_ROOT_INO(sbi
)))
746 if (unlikely(nid
>= NM_I(sbi
)->max_nid
))
751 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
754 * Check whether the inode has blocks or not
756 static inline int F2FS_HAS_BLOCKS(struct inode
*inode
)
758 if (F2FS_I(inode
)->i_xattr_nid
)
759 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
+ 1;
761 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
;
764 static inline bool f2fs_has_xattr_block(unsigned int ofs
)
766 return ofs
== XATTR_NODE_OFFSET
;
769 static inline bool inc_valid_block_count(struct f2fs_sb_info
*sbi
,
770 struct inode
*inode
, blkcnt_t count
)
772 block_t valid_block_count
;
774 spin_lock(&sbi
->stat_lock
);
776 sbi
->total_valid_block_count
+ (block_t
)count
;
777 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
778 spin_unlock(&sbi
->stat_lock
);
781 inode
->i_blocks
+= count
;
782 sbi
->total_valid_block_count
= valid_block_count
;
783 sbi
->alloc_valid_block_count
+= (block_t
)count
;
784 spin_unlock(&sbi
->stat_lock
);
788 static inline void dec_valid_block_count(struct f2fs_sb_info
*sbi
,
792 spin_lock(&sbi
->stat_lock
);
793 f2fs_bug_on(sbi
, sbi
->total_valid_block_count
< (block_t
) count
);
794 f2fs_bug_on(sbi
, inode
->i_blocks
< count
);
795 inode
->i_blocks
-= count
;
796 sbi
->total_valid_block_count
-= (block_t
)count
;
797 spin_unlock(&sbi
->stat_lock
);
800 static inline void inc_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
802 atomic_inc(&sbi
->nr_pages
[count_type
]);
803 F2FS_SET_SB_DIRT(sbi
);
806 static inline void inode_inc_dirty_pages(struct inode
*inode
)
808 atomic_inc(&F2FS_I(inode
)->dirty_pages
);
809 if (S_ISDIR(inode
->i_mode
))
810 inc_page_count(F2FS_I_SB(inode
), F2FS_DIRTY_DENTS
);
813 static inline void dec_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
815 atomic_dec(&sbi
->nr_pages
[count_type
]);
818 static inline void inode_dec_dirty_pages(struct inode
*inode
)
820 if (!S_ISDIR(inode
->i_mode
) && !S_ISREG(inode
->i_mode
))
823 atomic_dec(&F2FS_I(inode
)->dirty_pages
);
825 if (S_ISDIR(inode
->i_mode
))
826 dec_page_count(F2FS_I_SB(inode
), F2FS_DIRTY_DENTS
);
829 static inline int get_pages(struct f2fs_sb_info
*sbi
, int count_type
)
831 return atomic_read(&sbi
->nr_pages
[count_type
]);
834 static inline int get_dirty_pages(struct inode
*inode
)
836 return atomic_read(&F2FS_I(inode
)->dirty_pages
);
839 static inline int get_blocktype_secs(struct f2fs_sb_info
*sbi
, int block_type
)
841 unsigned int pages_per_sec
= sbi
->segs_per_sec
*
842 (1 << sbi
->log_blocks_per_seg
);
843 return ((get_pages(sbi
, block_type
) + pages_per_sec
- 1)
844 >> sbi
->log_blocks_per_seg
) / sbi
->segs_per_sec
;
847 static inline block_t
valid_user_blocks(struct f2fs_sb_info
*sbi
)
849 return sbi
->total_valid_block_count
;
852 static inline unsigned long __bitmap_size(struct f2fs_sb_info
*sbi
, int flag
)
854 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
856 /* return NAT or SIT bitmap */
857 if (flag
== NAT_BITMAP
)
858 return le32_to_cpu(ckpt
->nat_ver_bitmap_bytesize
);
859 else if (flag
== SIT_BITMAP
)
860 return le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
);
865 static inline void *__bitmap_ptr(struct f2fs_sb_info
*sbi
, int flag
)
867 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
870 if (le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_payload
) > 0) {
871 if (flag
== NAT_BITMAP
)
872 return &ckpt
->sit_nat_version_bitmap
;
874 return (unsigned char *)ckpt
+ F2FS_BLKSIZE
;
876 offset
= (flag
== NAT_BITMAP
) ?
877 le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
) : 0;
878 return &ckpt
->sit_nat_version_bitmap
+ offset
;
882 static inline block_t
__start_cp_addr(struct f2fs_sb_info
*sbi
)
885 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
886 unsigned long long ckpt_version
= cur_cp_version(ckpt
);
888 start_addr
= le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_blkaddr
);
891 * odd numbered checkpoint should at cp segment 0
892 * and even segment must be at cp segment 1
894 if (!(ckpt_version
& 1))
895 start_addr
+= sbi
->blocks_per_seg
;
900 static inline block_t
__start_sum_addr(struct f2fs_sb_info
*sbi
)
902 return le32_to_cpu(F2FS_CKPT(sbi
)->cp_pack_start_sum
);
905 static inline bool inc_valid_node_count(struct f2fs_sb_info
*sbi
,
908 block_t valid_block_count
;
909 unsigned int valid_node_count
;
911 spin_lock(&sbi
->stat_lock
);
913 valid_block_count
= sbi
->total_valid_block_count
+ 1;
914 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
915 spin_unlock(&sbi
->stat_lock
);
919 valid_node_count
= sbi
->total_valid_node_count
+ 1;
920 if (unlikely(valid_node_count
> sbi
->total_node_count
)) {
921 spin_unlock(&sbi
->stat_lock
);
928 sbi
->alloc_valid_block_count
++;
929 sbi
->total_valid_node_count
++;
930 sbi
->total_valid_block_count
++;
931 spin_unlock(&sbi
->stat_lock
);
936 static inline void dec_valid_node_count(struct f2fs_sb_info
*sbi
,
939 spin_lock(&sbi
->stat_lock
);
941 f2fs_bug_on(sbi
, !sbi
->total_valid_block_count
);
942 f2fs_bug_on(sbi
, !sbi
->total_valid_node_count
);
943 f2fs_bug_on(sbi
, !inode
->i_blocks
);
946 sbi
->total_valid_node_count
--;
947 sbi
->total_valid_block_count
--;
949 spin_unlock(&sbi
->stat_lock
);
952 static inline unsigned int valid_node_count(struct f2fs_sb_info
*sbi
)
954 return sbi
->total_valid_node_count
;
957 static inline void inc_valid_inode_count(struct f2fs_sb_info
*sbi
)
959 spin_lock(&sbi
->stat_lock
);
960 f2fs_bug_on(sbi
, sbi
->total_valid_inode_count
== sbi
->total_node_count
);
961 sbi
->total_valid_inode_count
++;
962 spin_unlock(&sbi
->stat_lock
);
965 static inline void dec_valid_inode_count(struct f2fs_sb_info
*sbi
)
967 spin_lock(&sbi
->stat_lock
);
968 f2fs_bug_on(sbi
, !sbi
->total_valid_inode_count
);
969 sbi
->total_valid_inode_count
--;
970 spin_unlock(&sbi
->stat_lock
);
973 static inline unsigned int valid_inode_count(struct f2fs_sb_info
*sbi
)
975 return sbi
->total_valid_inode_count
;
978 static inline void f2fs_put_page(struct page
*page
, int unlock
)
984 f2fs_bug_on(F2FS_P_SB(page
), !PageLocked(page
));
987 page_cache_release(page
);
990 static inline void f2fs_put_dnode(struct dnode_of_data
*dn
)
993 f2fs_put_page(dn
->node_page
, 1);
994 if (dn
->inode_page
&& dn
->node_page
!= dn
->inode_page
)
995 f2fs_put_page(dn
->inode_page
, 0);
996 dn
->node_page
= NULL
;
997 dn
->inode_page
= NULL
;
1000 static inline struct kmem_cache
*f2fs_kmem_cache_create(const char *name
,
1003 return kmem_cache_create(name
, size
, 0, SLAB_RECLAIM_ACCOUNT
, NULL
);
1006 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache
*cachep
,
1011 entry
= kmem_cache_alloc(cachep
, flags
);
1020 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1022 static inline bool IS_INODE(struct page
*page
)
1024 struct f2fs_node
*p
= F2FS_NODE(page
);
1025 return RAW_IS_INODE(p
);
1028 static inline __le32
*blkaddr_in_node(struct f2fs_node
*node
)
1030 return RAW_IS_INODE(node
) ? node
->i
.i_addr
: node
->dn
.addr
;
1033 static inline block_t
datablock_addr(struct page
*node_page
,
1034 unsigned int offset
)
1036 struct f2fs_node
*raw_node
;
1038 raw_node
= F2FS_NODE(node_page
);
1039 addr_array
= blkaddr_in_node(raw_node
);
1040 return le32_to_cpu(addr_array
[offset
]);
1043 static inline int f2fs_test_bit(unsigned int nr
, char *addr
)
1048 mask
= 1 << (7 - (nr
& 0x07));
1049 return mask
& *addr
;
1052 static inline int f2fs_test_and_set_bit(unsigned int nr
, char *addr
)
1058 mask
= 1 << (7 - (nr
& 0x07));
1064 static inline int f2fs_test_and_clear_bit(unsigned int nr
, char *addr
)
1070 mask
= 1 << (7 - (nr
& 0x07));
1076 static inline void f2fs_change_bit(unsigned int nr
, char *addr
)
1081 mask
= 1 << (7 - (nr
& 0x07));
1085 /* used for f2fs_inode_info->flags */
1087 FI_NEW_INODE
, /* indicate newly allocated inode */
1088 FI_DIRTY_INODE
, /* indicate inode is dirty or not */
1089 FI_DIRTY_DIR
, /* indicate directory has dirty pages */
1090 FI_INC_LINK
, /* need to increment i_nlink */
1091 FI_ACL_MODE
, /* indicate acl mode */
1092 FI_NO_ALLOC
, /* should not allocate any blocks */
1093 FI_UPDATE_DIR
, /* should update inode block for consistency */
1094 FI_DELAY_IPUT
, /* used for the recovery */
1095 FI_NO_EXTENT
, /* not to use the extent cache */
1096 FI_INLINE_XATTR
, /* used for inline xattr */
1097 FI_INLINE_DATA
, /* used for inline data*/
1098 FI_INLINE_DENTRY
, /* used for inline dentry */
1099 FI_APPEND_WRITE
, /* inode has appended data */
1100 FI_UPDATE_WRITE
, /* inode has in-place-update data */
1101 FI_NEED_IPU
, /* used for ipu per file */
1102 FI_ATOMIC_FILE
, /* indicate atomic file */
1103 FI_VOLATILE_FILE
, /* indicate volatile file */
1106 static inline void set_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1108 if (!test_bit(flag
, &fi
->flags
))
1109 set_bit(flag
, &fi
->flags
);
1112 static inline int is_inode_flag_set(struct f2fs_inode_info
*fi
, int flag
)
1114 return test_bit(flag
, &fi
->flags
);
1117 static inline void clear_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1119 if (test_bit(flag
, &fi
->flags
))
1120 clear_bit(flag
, &fi
->flags
);
1123 static inline void set_acl_inode(struct f2fs_inode_info
*fi
, umode_t mode
)
1125 fi
->i_acl_mode
= mode
;
1126 set_inode_flag(fi
, FI_ACL_MODE
);
1129 static inline void get_inline_info(struct f2fs_inode_info
*fi
,
1130 struct f2fs_inode
*ri
)
1132 if (ri
->i_inline
& F2FS_INLINE_XATTR
)
1133 set_inode_flag(fi
, FI_INLINE_XATTR
);
1134 if (ri
->i_inline
& F2FS_INLINE_DATA
)
1135 set_inode_flag(fi
, FI_INLINE_DATA
);
1136 if (ri
->i_inline
& F2FS_INLINE_DENTRY
)
1137 set_inode_flag(fi
, FI_INLINE_DENTRY
);
1140 static inline void set_raw_inline(struct f2fs_inode_info
*fi
,
1141 struct f2fs_inode
*ri
)
1145 if (is_inode_flag_set(fi
, FI_INLINE_XATTR
))
1146 ri
->i_inline
|= F2FS_INLINE_XATTR
;
1147 if (is_inode_flag_set(fi
, FI_INLINE_DATA
))
1148 ri
->i_inline
|= F2FS_INLINE_DATA
;
1149 if (is_inode_flag_set(fi
, FI_INLINE_DENTRY
))
1150 ri
->i_inline
|= F2FS_INLINE_DENTRY
;
1153 static inline int f2fs_has_inline_xattr(struct inode
*inode
)
1155 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_XATTR
);
1158 static inline unsigned int addrs_per_inode(struct f2fs_inode_info
*fi
)
1160 if (f2fs_has_inline_xattr(&fi
->vfs_inode
))
1161 return DEF_ADDRS_PER_INODE
- F2FS_INLINE_XATTR_ADDRS
;
1162 return DEF_ADDRS_PER_INODE
;
1165 static inline void *inline_xattr_addr(struct page
*page
)
1167 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1168 return (void *)&(ri
->i_addr
[DEF_ADDRS_PER_INODE
-
1169 F2FS_INLINE_XATTR_ADDRS
]);
1172 static inline int inline_xattr_size(struct inode
*inode
)
1174 if (f2fs_has_inline_xattr(inode
))
1175 return F2FS_INLINE_XATTR_ADDRS
<< 2;
1180 static inline int f2fs_has_inline_data(struct inode
*inode
)
1182 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DATA
);
1185 static inline bool f2fs_is_atomic_file(struct inode
*inode
)
1187 return is_inode_flag_set(F2FS_I(inode
), FI_ATOMIC_FILE
);
1190 static inline bool f2fs_is_volatile_file(struct inode
*inode
)
1192 return is_inode_flag_set(F2FS_I(inode
), FI_VOLATILE_FILE
);
1195 static inline void *inline_data_addr(struct page
*page
)
1197 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1198 return (void *)&(ri
->i_addr
[1]);
1201 static inline int f2fs_has_inline_dentry(struct inode
*inode
)
1203 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DENTRY
);
1206 static inline void *inline_dentry_addr(struct page
*page
)
1208 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1209 return (void *)&(ri
->i_addr
[1]);
1212 static inline int f2fs_readonly(struct super_block
*sb
)
1214 return sb
->s_flags
& MS_RDONLY
;
1217 static inline bool f2fs_cp_error(struct f2fs_sb_info
*sbi
)
1219 return is_set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1222 static inline void f2fs_stop_checkpoint(struct f2fs_sb_info
*sbi
)
1224 set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1225 sbi
->sb
->s_flags
|= MS_RDONLY
;
1228 #define get_inode_mode(i) \
1229 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1230 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1232 /* get offset of first page in next direct node */
1233 #define PGOFS_OF_NEXT_DNODE(pgofs, fi) \
1234 ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \
1235 (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \
1236 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi))
1241 int f2fs_sync_file(struct file
*, loff_t
, loff_t
, int);
1242 void truncate_data_blocks(struct dnode_of_data
*);
1243 int truncate_blocks(struct inode
*, u64
, bool);
1244 void f2fs_truncate(struct inode
*);
1245 int f2fs_getattr(struct vfsmount
*, struct dentry
*, struct kstat
*);
1246 int f2fs_setattr(struct dentry
*, struct iattr
*);
1247 int truncate_hole(struct inode
*, pgoff_t
, pgoff_t
);
1248 int truncate_data_blocks_range(struct dnode_of_data
*, int);
1249 long f2fs_ioctl(struct file
*, unsigned int, unsigned long);
1250 long f2fs_compat_ioctl(struct file
*, unsigned int, unsigned long);
1255 void f2fs_set_inode_flags(struct inode
*);
1256 struct inode
*f2fs_iget(struct super_block
*, unsigned long);
1257 int try_to_free_nats(struct f2fs_sb_info
*, int);
1258 void update_inode(struct inode
*, struct page
*);
1259 void update_inode_page(struct inode
*);
1260 int f2fs_write_inode(struct inode
*, struct writeback_control
*);
1261 void f2fs_evict_inode(struct inode
*);
1262 void handle_failed_inode(struct inode
*);
1267 struct dentry
*f2fs_get_parent(struct dentry
*child
);
1272 extern unsigned char f2fs_filetype_table
[F2FS_FT_MAX
];
1273 void set_de_type(struct f2fs_dir_entry
*, struct inode
*);
1274 struct f2fs_dir_entry
*find_target_dentry(struct qstr
*, int *,
1275 struct f2fs_dentry_ptr
*);
1276 bool f2fs_fill_dentries(struct dir_context
*, struct f2fs_dentry_ptr
*,
1278 void do_make_empty_dir(struct inode
*, struct inode
*,
1279 struct f2fs_dentry_ptr
*);
1280 struct page
*init_inode_metadata(struct inode
*, struct inode
*,
1281 const struct qstr
*, struct page
*);
1282 void update_parent_metadata(struct inode
*, struct inode
*, unsigned int);
1283 int room_for_filename(const void *, int, int);
1284 void f2fs_drop_nlink(struct inode
*, struct inode
*, struct page
*);
1285 struct f2fs_dir_entry
*f2fs_find_entry(struct inode
*, struct qstr
*,
1287 struct f2fs_dir_entry
*f2fs_parent_dir(struct inode
*, struct page
**);
1288 ino_t
f2fs_inode_by_name(struct inode
*, struct qstr
*);
1289 void f2fs_set_link(struct inode
*, struct f2fs_dir_entry
*,
1290 struct page
*, struct inode
*);
1291 int update_dent_inode(struct inode
*, const struct qstr
*);
1292 int __f2fs_add_link(struct inode
*, const struct qstr
*, struct inode
*);
1293 void f2fs_delete_entry(struct f2fs_dir_entry
*, struct page
*, struct inode
*,
1295 int f2fs_do_tmpfile(struct inode
*, struct inode
*);
1296 int f2fs_make_empty(struct inode
*, struct inode
*);
1297 bool f2fs_empty_dir(struct inode
*);
1299 static inline int f2fs_add_link(struct dentry
*dentry
, struct inode
*inode
)
1301 return __f2fs_add_link(dentry
->d_parent
->d_inode
, &dentry
->d_name
,
1308 int f2fs_sync_fs(struct super_block
*, int);
1309 extern __printf(3, 4)
1310 void f2fs_msg(struct super_block
*, const char *, const char *, ...);
1315 f2fs_hash_t
f2fs_dentry_hash(const struct qstr
*);
1320 struct dnode_of_data
;
1323 bool available_free_memory(struct f2fs_sb_info
*, int);
1324 bool is_checkpointed_node(struct f2fs_sb_info
*, nid_t
);
1325 bool has_fsynced_inode(struct f2fs_sb_info
*, nid_t
);
1326 bool need_inode_block_update(struct f2fs_sb_info
*, nid_t
);
1327 void get_node_info(struct f2fs_sb_info
*, nid_t
, struct node_info
*);
1328 int get_dnode_of_data(struct dnode_of_data
*, pgoff_t
, int);
1329 int truncate_inode_blocks(struct inode
*, pgoff_t
);
1330 int truncate_xattr_node(struct inode
*, struct page
*);
1331 int wait_on_node_pages_writeback(struct f2fs_sb_info
*, nid_t
);
1332 void remove_inode_page(struct inode
*);
1333 struct page
*new_inode_page(struct inode
*);
1334 struct page
*new_node_page(struct dnode_of_data
*, unsigned int, struct page
*);
1335 void ra_node_page(struct f2fs_sb_info
*, nid_t
);
1336 struct page
*get_node_page(struct f2fs_sb_info
*, pgoff_t
);
1337 struct page
*get_node_page_ra(struct page
*, int);
1338 void sync_inode_page(struct dnode_of_data
*);
1339 int sync_node_pages(struct f2fs_sb_info
*, nid_t
, struct writeback_control
*);
1340 bool alloc_nid(struct f2fs_sb_info
*, nid_t
*);
1341 void alloc_nid_done(struct f2fs_sb_info
*, nid_t
);
1342 void alloc_nid_failed(struct f2fs_sb_info
*, nid_t
);
1343 void recover_inline_xattr(struct inode
*, struct page
*);
1344 void recover_xattr_data(struct inode
*, struct page
*, block_t
);
1345 int recover_inode_page(struct f2fs_sb_info
*, struct page
*);
1346 int restore_node_summary(struct f2fs_sb_info
*, unsigned int,
1347 struct f2fs_summary_block
*);
1348 void flush_nat_entries(struct f2fs_sb_info
*);
1349 int build_node_manager(struct f2fs_sb_info
*);
1350 void destroy_node_manager(struct f2fs_sb_info
*);
1351 int __init
create_node_manager_caches(void);
1352 void destroy_node_manager_caches(void);
1357 void register_inmem_page(struct inode
*, struct page
*);
1358 void invalidate_inmem_page(struct inode
*, struct page
*);
1359 void commit_inmem_pages(struct inode
*, bool);
1360 void f2fs_balance_fs(struct f2fs_sb_info
*);
1361 void f2fs_balance_fs_bg(struct f2fs_sb_info
*);
1362 int f2fs_issue_flush(struct f2fs_sb_info
*);
1363 int create_flush_cmd_control(struct f2fs_sb_info
*);
1364 void destroy_flush_cmd_control(struct f2fs_sb_info
*);
1365 void invalidate_blocks(struct f2fs_sb_info
*, block_t
);
1366 void refresh_sit_entry(struct f2fs_sb_info
*, block_t
, block_t
);
1367 void clear_prefree_segments(struct f2fs_sb_info
*);
1368 void release_discard_addrs(struct f2fs_sb_info
*);
1369 void discard_next_dnode(struct f2fs_sb_info
*, block_t
);
1370 int npages_for_summary_flush(struct f2fs_sb_info
*);
1371 void allocate_new_segments(struct f2fs_sb_info
*);
1372 int f2fs_trim_fs(struct f2fs_sb_info
*, struct fstrim_range
*);
1373 struct page
*get_sum_page(struct f2fs_sb_info
*, unsigned int);
1374 void write_meta_page(struct f2fs_sb_info
*, struct page
*);
1375 void write_node_page(struct f2fs_sb_info
*, struct page
*,
1376 struct f2fs_io_info
*, unsigned int, block_t
, block_t
*);
1377 void write_data_page(struct page
*, struct dnode_of_data
*, block_t
*,
1378 struct f2fs_io_info
*);
1379 void rewrite_data_page(struct page
*, block_t
, struct f2fs_io_info
*);
1380 void recover_data_page(struct f2fs_sb_info
*, struct page
*,
1381 struct f2fs_summary
*, block_t
, block_t
);
1382 void allocate_data_block(struct f2fs_sb_info
*, struct page
*,
1383 block_t
, block_t
*, struct f2fs_summary
*, int);
1384 void f2fs_wait_on_page_writeback(struct page
*, enum page_type
);
1385 void write_data_summaries(struct f2fs_sb_info
*, block_t
);
1386 void write_node_summaries(struct f2fs_sb_info
*, block_t
);
1387 int lookup_journal_in_cursum(struct f2fs_summary_block
*,
1388 int, unsigned int, int);
1389 void flush_sit_entries(struct f2fs_sb_info
*, struct cp_control
*);
1390 int build_segment_manager(struct f2fs_sb_info
*);
1391 void destroy_segment_manager(struct f2fs_sb_info
*);
1392 int __init
create_segment_manager_caches(void);
1393 void destroy_segment_manager_caches(void);
1398 struct page
*grab_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1399 struct page
*get_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1400 struct page
*get_meta_page_ra(struct f2fs_sb_info
*, pgoff_t
);
1401 int ra_meta_pages(struct f2fs_sb_info
*, block_t
, int, int);
1402 long sync_meta_pages(struct f2fs_sb_info
*, enum page_type
, long);
1403 void add_dirty_inode(struct f2fs_sb_info
*, nid_t
, int type
);
1404 void remove_dirty_inode(struct f2fs_sb_info
*, nid_t
, int type
);
1405 void release_dirty_inode(struct f2fs_sb_info
*);
1406 bool exist_written_data(struct f2fs_sb_info
*, nid_t
, int);
1407 int acquire_orphan_inode(struct f2fs_sb_info
*);
1408 void release_orphan_inode(struct f2fs_sb_info
*);
1409 void add_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1410 void remove_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1411 void recover_orphan_inodes(struct f2fs_sb_info
*);
1412 int get_valid_checkpoint(struct f2fs_sb_info
*);
1413 void update_dirty_page(struct inode
*, struct page
*);
1414 void add_dirty_dir_inode(struct inode
*);
1415 void remove_dirty_dir_inode(struct inode
*);
1416 void sync_dirty_dir_inodes(struct f2fs_sb_info
*);
1417 void write_checkpoint(struct f2fs_sb_info
*, struct cp_control
*);
1418 void init_ino_entry_info(struct f2fs_sb_info
*);
1419 int __init
create_checkpoint_caches(void);
1420 void destroy_checkpoint_caches(void);
1425 void f2fs_submit_merged_bio(struct f2fs_sb_info
*, enum page_type
, int);
1426 int f2fs_submit_page_bio(struct f2fs_sb_info
*, struct page
*, block_t
, int);
1427 void f2fs_submit_page_mbio(struct f2fs_sb_info
*, struct page
*, block_t
,
1428 struct f2fs_io_info
*);
1429 int reserve_new_block(struct dnode_of_data
*);
1430 int f2fs_reserve_block(struct dnode_of_data
*, pgoff_t
);
1431 void update_extent_cache(block_t
, struct dnode_of_data
*);
1432 struct page
*find_data_page(struct inode
*, pgoff_t
, bool);
1433 struct page
*get_lock_data_page(struct inode
*, pgoff_t
);
1434 struct page
*get_new_data_page(struct inode
*, struct page
*, pgoff_t
, bool);
1435 int do_write_data_page(struct page
*, struct f2fs_io_info
*);
1436 int f2fs_fiemap(struct inode
*inode
, struct fiemap_extent_info
*, u64
, u64
);
1441 int start_gc_thread(struct f2fs_sb_info
*);
1442 void stop_gc_thread(struct f2fs_sb_info
*);
1443 block_t
start_bidx_of_node(unsigned int, struct f2fs_inode_info
*);
1444 int f2fs_gc(struct f2fs_sb_info
*);
1445 void build_gc_manager(struct f2fs_sb_info
*);
1446 int __init
create_gc_caches(void);
1447 void destroy_gc_caches(void);
1452 int recover_fsync_data(struct f2fs_sb_info
*);
1453 bool space_for_roll_forward(struct f2fs_sb_info
*);
1458 #ifdef CONFIG_F2FS_STAT_FS
1459 struct f2fs_stat_info
{
1460 struct list_head stat_list
;
1461 struct f2fs_sb_info
*sbi
;
1462 int all_area_segs
, sit_area_segs
, nat_area_segs
, ssa_area_segs
;
1463 int main_area_segs
, main_area_sections
, main_area_zones
;
1464 int hit_ext
, total_ext
;
1465 int ndirty_node
, ndirty_dent
, ndirty_dirs
, ndirty_meta
;
1466 int nats
, sits
, fnids
;
1467 int total_count
, utilization
;
1468 int bg_gc
, inline_inode
, inline_dir
;
1469 unsigned int valid_count
, valid_node_count
, valid_inode_count
;
1470 unsigned int bimodal
, avg_vblocks
;
1471 int util_free
, util_valid
, util_invalid
;
1472 int rsvd_segs
, overp_segs
;
1473 int dirty_count
, node_pages
, meta_pages
;
1474 int prefree_count
, call_count
, cp_count
;
1475 int tot_segs
, node_segs
, data_segs
, free_segs
, free_secs
;
1476 int tot_blks
, data_blks
, node_blks
;
1477 int curseg
[NR_CURSEG_TYPE
];
1478 int cursec
[NR_CURSEG_TYPE
];
1479 int curzone
[NR_CURSEG_TYPE
];
1481 unsigned int segment_count
[2];
1482 unsigned int block_count
[2];
1483 unsigned base_mem
, cache_mem
;
1486 static inline struct f2fs_stat_info
*F2FS_STAT(struct f2fs_sb_info
*sbi
)
1488 return (struct f2fs_stat_info
*)sbi
->stat_info
;
1491 #define stat_inc_cp_count(si) ((si)->cp_count++)
1492 #define stat_inc_call_count(si) ((si)->call_count++)
1493 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1494 #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1495 #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
1496 #define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++)
1497 #define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++)
1498 #define stat_inc_inline_inode(inode) \
1500 if (f2fs_has_inline_data(inode)) \
1501 ((F2FS_I_SB(inode))->inline_inode++); \
1503 #define stat_dec_inline_inode(inode) \
1505 if (f2fs_has_inline_data(inode)) \
1506 ((F2FS_I_SB(inode))->inline_inode--); \
1508 #define stat_inc_inline_dir(inode) \
1510 if (f2fs_has_inline_dentry(inode)) \
1511 ((F2FS_I_SB(inode))->inline_dir++); \
1513 #define stat_dec_inline_dir(inode) \
1515 if (f2fs_has_inline_dentry(inode)) \
1516 ((F2FS_I_SB(inode))->inline_dir--); \
1518 #define stat_inc_seg_type(sbi, curseg) \
1519 ((sbi)->segment_count[(curseg)->alloc_type]++)
1520 #define stat_inc_block_count(sbi, curseg) \
1521 ((sbi)->block_count[(curseg)->alloc_type]++)
1523 #define stat_inc_seg_count(sbi, type) \
1525 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1527 if (type == SUM_TYPE_DATA) \
1533 #define stat_inc_tot_blk_count(si, blks) \
1534 (si->tot_blks += (blks))
1536 #define stat_inc_data_blk_count(sbi, blks) \
1538 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1539 stat_inc_tot_blk_count(si, blks); \
1540 si->data_blks += (blks); \
1543 #define stat_inc_node_blk_count(sbi, blks) \
1545 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1546 stat_inc_tot_blk_count(si, blks); \
1547 si->node_blks += (blks); \
1550 int f2fs_build_stats(struct f2fs_sb_info
*);
1551 void f2fs_destroy_stats(struct f2fs_sb_info
*);
1552 void __init
f2fs_create_root_stats(void);
1553 void f2fs_destroy_root_stats(void);
1555 #define stat_inc_cp_count(si)
1556 #define stat_inc_call_count(si)
1557 #define stat_inc_bggc_count(si)
1558 #define stat_inc_dirty_dir(sbi)
1559 #define stat_dec_dirty_dir(sbi)
1560 #define stat_inc_total_hit(sb)
1561 #define stat_inc_read_hit(sb)
1562 #define stat_inc_inline_inode(inode)
1563 #define stat_dec_inline_inode(inode)
1564 #define stat_inc_inline_dir(inode)
1565 #define stat_dec_inline_dir(inode)
1566 #define stat_inc_seg_type(sbi, curseg)
1567 #define stat_inc_block_count(sbi, curseg)
1568 #define stat_inc_seg_count(si, type)
1569 #define stat_inc_tot_blk_count(si, blks)
1570 #define stat_inc_data_blk_count(si, blks)
1571 #define stat_inc_node_blk_count(sbi, blks)
1573 static inline int f2fs_build_stats(struct f2fs_sb_info
*sbi
) { return 0; }
1574 static inline void f2fs_destroy_stats(struct f2fs_sb_info
*sbi
) { }
1575 static inline void __init
f2fs_create_root_stats(void) { }
1576 static inline void f2fs_destroy_root_stats(void) { }
1579 extern const struct file_operations f2fs_dir_operations
;
1580 extern const struct file_operations f2fs_file_operations
;
1581 extern const struct inode_operations f2fs_file_inode_operations
;
1582 extern const struct address_space_operations f2fs_dblock_aops
;
1583 extern const struct address_space_operations f2fs_node_aops
;
1584 extern const struct address_space_operations f2fs_meta_aops
;
1585 extern const struct inode_operations f2fs_dir_inode_operations
;
1586 extern const struct inode_operations f2fs_symlink_inode_operations
;
1587 extern const struct inode_operations f2fs_special_inode_operations
;
1592 bool f2fs_may_inline(struct inode
*);
1593 int f2fs_read_inline_data(struct inode
*, struct page
*);
1594 int f2fs_convert_inline_data(struct inode
*, pgoff_t
, struct page
*);
1595 int f2fs_write_inline_data(struct inode
*, struct page
*, unsigned int);
1596 void truncate_inline_data(struct inode
*, u64
);
1597 bool recover_inline_data(struct inode
*, struct page
*);
1598 struct f2fs_dir_entry
*find_in_inline_dir(struct inode
*, struct qstr
*,
1600 struct f2fs_dir_entry
*f2fs_parent_inline_dir(struct inode
*, struct page
**);
1601 int make_empty_inline_dir(struct inode
*inode
, struct inode
*, struct page
*);
1602 int f2fs_add_inline_entry(struct inode
*, const struct qstr
*, struct inode
*);
1603 void f2fs_delete_inline_entry(struct f2fs_dir_entry
*, struct page
*,
1604 struct inode
*, struct inode
*);
1605 bool f2fs_empty_inline_dir(struct inode
*);
1606 int f2fs_read_inline_dir(struct file
*, struct dir_context
*);