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
109 * For CP/NAT/SIT/SSA readahead
119 /* for the list of ino */
121 ORPHAN_INO
, /* for orphan ino list */
122 APPEND_INO
, /* for append ino list */
123 UPDATE_INO
, /* for update ino list */
124 MAX_INO_ENTRY
, /* max. list */
128 struct list_head list
; /* list head */
129 nid_t ino
; /* inode number */
132 /* for the list of directory inodes */
133 struct dir_inode_entry
{
134 struct list_head list
; /* list head */
135 struct inode
*inode
; /* vfs inode pointer */
138 /* for the list of blockaddresses to be discarded */
139 struct discard_entry
{
140 struct list_head list
; /* list head */
141 block_t blkaddr
; /* block address to be discarded */
142 int len
; /* # of consecutive blocks of the discard */
145 /* for the list of fsync inodes, used only during recovery */
146 struct fsync_inode_entry
{
147 struct list_head list
; /* list head */
148 struct inode
*inode
; /* vfs inode pointer */
149 block_t blkaddr
; /* block address locating the last fsync */
150 block_t last_dentry
; /* block address locating the last dentry */
151 block_t last_inode
; /* block address locating the last inode */
154 #define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
155 #define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
157 #define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
158 #define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
159 #define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
160 #define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
162 static inline int update_nats_in_cursum(struct f2fs_summary_block
*rs
, int i
)
164 int before
= nats_in_cursum(rs
);
165 rs
->n_nats
= cpu_to_le16(before
+ i
);
169 static inline int update_sits_in_cursum(struct f2fs_summary_block
*rs
, int i
)
171 int before
= sits_in_cursum(rs
);
172 rs
->n_sits
= cpu_to_le16(before
+ i
);
176 static inline bool __has_cursum_space(struct f2fs_summary_block
*sum
, int size
,
179 if (type
== NAT_JOURNAL
)
180 return nats_in_cursum(sum
) + size
<= NAT_JOURNAL_ENTRIES
;
182 return sits_in_cursum(sum
) + size
<= SIT_JOURNAL_ENTRIES
;
188 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
189 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
191 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
193 * ioctl commands in 32 bit emulation
195 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
196 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
200 * For INODE and NODE manager
203 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
204 * as its node offset to distinguish from index node blocks.
205 * But some bits are used to mark the node block.
207 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
210 ALLOC_NODE
, /* allocate a new node page if needed */
211 LOOKUP_NODE
, /* look up a node without readahead */
213 * look up a node with readahead called
218 #define F2FS_LINK_MAX 32000 /* maximum link count per file */
220 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
222 /* for in-memory extent cache entry */
223 #define F2FS_MIN_EXTENT_LEN 16 /* minimum extent length */
226 rwlock_t ext_lock
; /* rwlock for consistency */
227 unsigned int fofs
; /* start offset in a file */
228 u32 blk_addr
; /* start block address of the extent */
229 unsigned int len
; /* length of the extent */
233 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
235 #define FADVISE_COLD_BIT 0x01
236 #define FADVISE_LOST_PINO_BIT 0x02
238 #define DEF_DIR_LEVEL 0
240 struct f2fs_inode_info
{
241 struct inode vfs_inode
; /* serve a vfs inode */
242 unsigned long i_flags
; /* keep an inode flags for ioctl */
243 unsigned char i_advise
; /* use to give file attribute hints */
244 unsigned char i_dir_level
; /* use for dentry level for large dir */
245 unsigned int i_current_depth
; /* use only in directory structure */
246 unsigned int i_pino
; /* parent inode number */
247 umode_t i_acl_mode
; /* keep file acl mode temporarily */
249 /* Use below internally in f2fs*/
250 unsigned long flags
; /* use to pass per-file flags */
251 struct rw_semaphore i_sem
; /* protect fi info */
252 atomic_t dirty_pages
; /* # of dirty pages */
253 f2fs_hash_t chash
; /* hash value of given file name */
254 unsigned int clevel
; /* maximum level of given file name */
255 nid_t i_xattr_nid
; /* node id that contains xattrs */
256 unsigned long long xattr_ver
; /* cp version of xattr modification */
257 struct extent_info ext
; /* in-memory extent cache entry */
258 struct dir_inode_entry
*dirty_dir
; /* the pointer of dirty dir */
261 static inline void get_extent_info(struct extent_info
*ext
,
262 struct f2fs_extent i_ext
)
264 write_lock(&ext
->ext_lock
);
265 ext
->fofs
= le32_to_cpu(i_ext
.fofs
);
266 ext
->blk_addr
= le32_to_cpu(i_ext
.blk_addr
);
267 ext
->len
= le32_to_cpu(i_ext
.len
);
268 write_unlock(&ext
->ext_lock
);
271 static inline void set_raw_extent(struct extent_info
*ext
,
272 struct f2fs_extent
*i_ext
)
274 read_lock(&ext
->ext_lock
);
275 i_ext
->fofs
= cpu_to_le32(ext
->fofs
);
276 i_ext
->blk_addr
= cpu_to_le32(ext
->blk_addr
);
277 i_ext
->len
= cpu_to_le32(ext
->len
);
278 read_unlock(&ext
->ext_lock
);
281 struct f2fs_nm_info
{
282 block_t nat_blkaddr
; /* base disk address of NAT */
283 nid_t max_nid
; /* maximum possible node ids */
284 nid_t available_nids
; /* maximum available node ids */
285 nid_t next_scan_nid
; /* the next nid to be scanned */
286 unsigned int ram_thresh
; /* control the memory footprint */
288 /* NAT cache management */
289 struct radix_tree_root nat_root
;/* root of the nat entry cache */
290 rwlock_t nat_tree_lock
; /* protect nat_tree_lock */
291 unsigned int nat_cnt
; /* the # of cached nat entries */
292 struct list_head nat_entries
; /* cached nat entry list (clean) */
293 struct list_head dirty_nat_entries
; /* cached nat entry list (dirty) */
294 struct list_head nat_entry_set
; /* nat entry set list */
295 unsigned int dirty_nat_cnt
; /* total num of nat entries in set */
297 /* free node ids management */
298 struct radix_tree_root free_nid_root
;/* root of the free_nid cache */
299 struct list_head free_nid_list
; /* a list for free nids */
300 spinlock_t free_nid_list_lock
; /* protect free nid list */
301 unsigned int fcnt
; /* the number of free node id */
302 struct mutex build_lock
; /* lock for build free nids */
305 char *nat_bitmap
; /* NAT bitmap pointer */
306 int bitmap_size
; /* bitmap size */
310 * this structure is used as one of function parameters.
311 * all the information are dedicated to a given direct node block determined
312 * by the data offset in a file.
314 struct dnode_of_data
{
315 struct inode
*inode
; /* vfs inode pointer */
316 struct page
*inode_page
; /* its inode page, NULL is possible */
317 struct page
*node_page
; /* cached direct node page */
318 nid_t nid
; /* node id of the direct node block */
319 unsigned int ofs_in_node
; /* data offset in the node page */
320 bool inode_page_locked
; /* inode page is locked or not */
321 block_t data_blkaddr
; /* block address of the node block */
324 static inline void set_new_dnode(struct dnode_of_data
*dn
, struct inode
*inode
,
325 struct page
*ipage
, struct page
*npage
, nid_t nid
)
327 memset(dn
, 0, sizeof(*dn
));
329 dn
->inode_page
= ipage
;
330 dn
->node_page
= npage
;
337 * By default, there are 6 active log areas across the whole main area.
338 * When considering hot and cold data separation to reduce cleaning overhead,
339 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
341 * In the current design, you should not change the numbers intentionally.
342 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
343 * logs individually according to the underlying devices. (default: 6)
344 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
345 * data and 8 for node logs.
347 #define NR_CURSEG_DATA_TYPE (3)
348 #define NR_CURSEG_NODE_TYPE (3)
349 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
352 CURSEG_HOT_DATA
= 0, /* directory entry blocks */
353 CURSEG_WARM_DATA
, /* data blocks */
354 CURSEG_COLD_DATA
, /* multimedia or GCed data blocks */
355 CURSEG_HOT_NODE
, /* direct node blocks of directory files */
356 CURSEG_WARM_NODE
, /* direct node blocks of normal files */
357 CURSEG_COLD_NODE
, /* indirect node blocks */
362 struct completion wait
;
363 struct llist_node llnode
;
367 struct flush_cmd_control
{
368 struct task_struct
*f2fs_issue_flush
; /* flush thread */
369 wait_queue_head_t flush_wait_queue
; /* waiting queue for wake-up */
370 struct llist_head issue_list
; /* list for command issue */
371 struct llist_node
*dispatch_list
; /* list for command dispatch */
374 struct f2fs_sm_info
{
375 struct sit_info
*sit_info
; /* whole segment information */
376 struct free_segmap_info
*free_info
; /* free segment information */
377 struct dirty_seglist_info
*dirty_info
; /* dirty segment information */
378 struct curseg_info
*curseg_array
; /* active segment information */
380 block_t seg0_blkaddr
; /* block address of 0'th segment */
381 block_t main_blkaddr
; /* start block address of main area */
382 block_t ssa_blkaddr
; /* start block address of SSA area */
384 unsigned int segment_count
; /* total # of segments */
385 unsigned int main_segments
; /* # of segments in main area */
386 unsigned int reserved_segments
; /* # of reserved segments */
387 unsigned int ovp_segments
; /* # of overprovision segments */
389 /* a threshold to reclaim prefree segments */
390 unsigned int rec_prefree_segments
;
392 /* for small discard management */
393 struct list_head discard_list
; /* 4KB discard list */
394 int nr_discards
; /* # of discards in the list */
395 int max_discards
; /* max. discards to be issued */
397 struct list_head sit_entry_set
; /* sit entry set list */
399 unsigned int ipu_policy
; /* in-place-update policy */
400 unsigned int min_ipu_util
; /* in-place-update threshold */
401 unsigned int min_fsync_blocks
; /* threshold for fsync */
403 /* for flush command control */
404 struct flush_cmd_control
*cmd_control_info
;
412 * COUNT_TYPE for monitoring
414 * f2fs monitors the number of several block types such as on-writeback,
415 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
426 * The below are the page types of bios used in submit_bio().
427 * The available types are:
428 * DATA User data pages. It operates as async mode.
429 * NODE Node pages. It operates as async mode.
430 * META FS metadata pages such as SIT, NAT, CP.
431 * NR_PAGE_TYPE The number of page types.
432 * META_FLUSH Make sure the previous pages are written
433 * with waiting the bio's completion
434 * ... Only can be used with META.
436 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
445 struct f2fs_io_info
{
446 enum page_type type
; /* contains DATA/NODE/META/META_FLUSH */
447 int rw
; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
450 #define is_read_io(rw) (((rw) & 1) == READ)
451 struct f2fs_bio_info
{
452 struct f2fs_sb_info
*sbi
; /* f2fs superblock */
453 struct bio
*bio
; /* bios to merge */
454 sector_t last_block_in_bio
; /* last block number */
455 struct f2fs_io_info fio
; /* store buffered io info. */
456 struct rw_semaphore io_rwsem
; /* blocking op for bio */
459 struct f2fs_sb_info
{
460 struct super_block
*sb
; /* pointer to VFS super block */
461 struct proc_dir_entry
*s_proc
; /* proc entry */
462 struct buffer_head
*raw_super_buf
; /* buffer head of raw sb */
463 struct f2fs_super_block
*raw_super
; /* raw super block pointer */
464 int s_dirty
; /* dirty flag for checkpoint */
465 bool need_fsck
; /* need fsck.f2fs to fix */
467 /* for node-related operations */
468 struct f2fs_nm_info
*nm_info
; /* node manager */
469 struct inode
*node_inode
; /* cache node blocks */
471 /* for segment-related operations */
472 struct f2fs_sm_info
*sm_info
; /* segment manager */
474 /* for bio operations */
475 struct f2fs_bio_info read_io
; /* for read bios */
476 struct f2fs_bio_info write_io
[NR_PAGE_TYPE
]; /* for write bios */
477 struct completion
*wait_io
; /* for completion bios */
480 struct f2fs_checkpoint
*ckpt
; /* raw checkpoint pointer */
481 struct inode
*meta_inode
; /* cache meta blocks */
482 struct mutex cp_mutex
; /* checkpoint procedure lock */
483 struct rw_semaphore cp_rwsem
; /* blocking FS operations */
484 struct rw_semaphore node_write
; /* locking node writes */
485 struct mutex writepages
; /* mutex for writepages() */
486 bool por_doing
; /* recovery is doing or not */
487 wait_queue_head_t cp_wait
;
489 /* for inode management */
490 struct radix_tree_root ino_root
[MAX_INO_ENTRY
]; /* ino entry array */
491 spinlock_t ino_lock
[MAX_INO_ENTRY
]; /* for ino entry lock */
492 struct list_head ino_list
[MAX_INO_ENTRY
]; /* inode list head */
494 /* for orphan inode, use 0'th array */
495 unsigned int n_orphans
; /* # of orphan inodes */
496 unsigned int max_orphans
; /* max orphan inodes */
498 /* for directory inode management */
499 struct list_head dir_inode_list
; /* dir inode list */
500 spinlock_t dir_inode_lock
; /* for dir inode list lock */
502 /* basic filesystem units */
503 unsigned int log_sectors_per_block
; /* log2 sectors per block */
504 unsigned int log_blocksize
; /* log2 block size */
505 unsigned int blocksize
; /* block size */
506 unsigned int root_ino_num
; /* root inode number*/
507 unsigned int node_ino_num
; /* node inode number*/
508 unsigned int meta_ino_num
; /* meta inode number*/
509 unsigned int log_blocks_per_seg
; /* log2 blocks per segment */
510 unsigned int blocks_per_seg
; /* blocks per segment */
511 unsigned int segs_per_sec
; /* segments per section */
512 unsigned int secs_per_zone
; /* sections per zone */
513 unsigned int total_sections
; /* total section count */
514 unsigned int total_node_count
; /* total node block count */
515 unsigned int total_valid_node_count
; /* valid node block count */
516 unsigned int total_valid_inode_count
; /* valid inode count */
517 int active_logs
; /* # of active logs */
518 int dir_level
; /* directory level */
520 block_t user_block_count
; /* # of user blocks */
521 block_t total_valid_block_count
; /* # of valid blocks */
522 block_t alloc_valid_block_count
; /* # of allocated blocks */
523 block_t last_valid_block_count
; /* for recovery */
524 u32 s_next_generation
; /* for NFS support */
525 atomic_t nr_pages
[NR_COUNT_TYPE
]; /* # of pages, see count_type */
527 struct f2fs_mount_info mount_opt
; /* mount options */
529 /* for cleaning operations */
530 struct mutex gc_mutex
; /* mutex for GC */
531 struct f2fs_gc_kthread
*gc_thread
; /* GC thread */
532 unsigned int cur_victim_sec
; /* current victim section num */
534 /* maximum # of trials to find a victim segment for SSR and GC */
535 unsigned int max_victim_search
;
538 * for stat information.
539 * one is for the LFS mode, and the other is for the SSR mode.
541 #ifdef CONFIG_F2FS_STAT_FS
542 struct f2fs_stat_info
*stat_info
; /* FS status information */
543 unsigned int segment_count
[2]; /* # of allocated segments */
544 unsigned int block_count
[2]; /* # of allocated blocks */
545 int total_hit_ext
, read_hit_ext
; /* extent cache hit ratio */
546 int inline_inode
; /* # of inline_data inodes */
547 int bg_gc
; /* background gc calls */
548 unsigned int n_dirty_dirs
; /* # of dir inodes */
550 unsigned int last_victim
[2]; /* last victim segment # */
551 spinlock_t stat_lock
; /* lock for stat operations */
553 /* For sysfs suppport */
554 struct kobject s_kobj
;
555 struct completion s_kobj_unregister
;
561 static inline struct f2fs_inode_info
*F2FS_I(struct inode
*inode
)
563 return container_of(inode
, struct f2fs_inode_info
, vfs_inode
);
566 static inline struct f2fs_sb_info
*F2FS_SB(struct super_block
*sb
)
568 return sb
->s_fs_info
;
571 static inline struct f2fs_sb_info
*F2FS_I_SB(struct inode
*inode
)
573 return F2FS_SB(inode
->i_sb
);
576 static inline struct f2fs_sb_info
*F2FS_M_SB(struct address_space
*mapping
)
578 return F2FS_I_SB(mapping
->host
);
581 static inline struct f2fs_sb_info
*F2FS_P_SB(struct page
*page
)
583 return F2FS_M_SB(page
->mapping
);
586 static inline struct f2fs_super_block
*F2FS_RAW_SUPER(struct f2fs_sb_info
*sbi
)
588 return (struct f2fs_super_block
*)(sbi
->raw_super
);
591 static inline struct f2fs_checkpoint
*F2FS_CKPT(struct f2fs_sb_info
*sbi
)
593 return (struct f2fs_checkpoint
*)(sbi
->ckpt
);
596 static inline struct f2fs_node
*F2FS_NODE(struct page
*page
)
598 return (struct f2fs_node
*)page_address(page
);
601 static inline struct f2fs_inode
*F2FS_INODE(struct page
*page
)
603 return &((struct f2fs_node
*)page_address(page
))->i
;
606 static inline struct f2fs_nm_info
*NM_I(struct f2fs_sb_info
*sbi
)
608 return (struct f2fs_nm_info
*)(sbi
->nm_info
);
611 static inline struct f2fs_sm_info
*SM_I(struct f2fs_sb_info
*sbi
)
613 return (struct f2fs_sm_info
*)(sbi
->sm_info
);
616 static inline struct sit_info
*SIT_I(struct f2fs_sb_info
*sbi
)
618 return (struct sit_info
*)(SM_I(sbi
)->sit_info
);
621 static inline struct free_segmap_info
*FREE_I(struct f2fs_sb_info
*sbi
)
623 return (struct free_segmap_info
*)(SM_I(sbi
)->free_info
);
626 static inline struct dirty_seglist_info
*DIRTY_I(struct f2fs_sb_info
*sbi
)
628 return (struct dirty_seglist_info
*)(SM_I(sbi
)->dirty_info
);
631 static inline struct address_space
*META_MAPPING(struct f2fs_sb_info
*sbi
)
633 return sbi
->meta_inode
->i_mapping
;
636 static inline struct address_space
*NODE_MAPPING(struct f2fs_sb_info
*sbi
)
638 return sbi
->node_inode
->i_mapping
;
641 static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info
*sbi
)
646 static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info
*sbi
)
651 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint
*cp
)
653 return le64_to_cpu(cp
->checkpoint_ver
);
656 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
658 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
659 return ckpt_flags
& f
;
662 static inline void set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
664 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
666 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
669 static inline void clear_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
671 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
673 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
676 static inline void f2fs_lock_op(struct f2fs_sb_info
*sbi
)
678 down_read(&sbi
->cp_rwsem
);
681 static inline void f2fs_unlock_op(struct f2fs_sb_info
*sbi
)
683 up_read(&sbi
->cp_rwsem
);
686 static inline void f2fs_lock_all(struct f2fs_sb_info
*sbi
)
688 f2fs_down_write(&sbi
->cp_rwsem
, &sbi
->cp_mutex
);
691 static inline void f2fs_unlock_all(struct f2fs_sb_info
*sbi
)
693 up_write(&sbi
->cp_rwsem
);
697 * Check whether the given nid is within node id range.
699 static inline int check_nid_range(struct f2fs_sb_info
*sbi
, nid_t nid
)
701 if (unlikely(nid
< F2FS_ROOT_INO(sbi
)))
703 if (unlikely(nid
>= NM_I(sbi
)->max_nid
))
708 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
711 * Check whether the inode has blocks or not
713 static inline int F2FS_HAS_BLOCKS(struct inode
*inode
)
715 if (F2FS_I(inode
)->i_xattr_nid
)
716 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
+ 1;
718 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
;
721 static inline bool f2fs_has_xattr_block(unsigned int ofs
)
723 return ofs
== XATTR_NODE_OFFSET
;
726 static inline bool inc_valid_block_count(struct f2fs_sb_info
*sbi
,
727 struct inode
*inode
, blkcnt_t count
)
729 block_t valid_block_count
;
731 spin_lock(&sbi
->stat_lock
);
733 sbi
->total_valid_block_count
+ (block_t
)count
;
734 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
735 spin_unlock(&sbi
->stat_lock
);
738 inode
->i_blocks
+= count
;
739 sbi
->total_valid_block_count
= valid_block_count
;
740 sbi
->alloc_valid_block_count
+= (block_t
)count
;
741 spin_unlock(&sbi
->stat_lock
);
745 static inline void dec_valid_block_count(struct f2fs_sb_info
*sbi
,
749 spin_lock(&sbi
->stat_lock
);
750 f2fs_bug_on(sbi
, sbi
->total_valid_block_count
< (block_t
) count
);
751 f2fs_bug_on(sbi
, inode
->i_blocks
< count
);
752 inode
->i_blocks
-= count
;
753 sbi
->total_valid_block_count
-= (block_t
)count
;
754 spin_unlock(&sbi
->stat_lock
);
757 static inline void inc_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
759 atomic_inc(&sbi
->nr_pages
[count_type
]);
760 F2FS_SET_SB_DIRT(sbi
);
763 static inline void inode_inc_dirty_pages(struct inode
*inode
)
765 atomic_inc(&F2FS_I(inode
)->dirty_pages
);
766 if (S_ISDIR(inode
->i_mode
))
767 inc_page_count(F2FS_I_SB(inode
), F2FS_DIRTY_DENTS
);
770 static inline void dec_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
772 atomic_dec(&sbi
->nr_pages
[count_type
]);
775 static inline void inode_dec_dirty_pages(struct inode
*inode
)
777 if (!S_ISDIR(inode
->i_mode
) && !S_ISREG(inode
->i_mode
))
780 atomic_dec(&F2FS_I(inode
)->dirty_pages
);
782 if (S_ISDIR(inode
->i_mode
))
783 dec_page_count(F2FS_I_SB(inode
), F2FS_DIRTY_DENTS
);
786 static inline int get_pages(struct f2fs_sb_info
*sbi
, int count_type
)
788 return atomic_read(&sbi
->nr_pages
[count_type
]);
791 static inline int get_dirty_pages(struct inode
*inode
)
793 return atomic_read(&F2FS_I(inode
)->dirty_pages
);
796 static inline int get_blocktype_secs(struct f2fs_sb_info
*sbi
, int block_type
)
798 unsigned int pages_per_sec
= sbi
->segs_per_sec
*
799 (1 << sbi
->log_blocks_per_seg
);
800 return ((get_pages(sbi
, block_type
) + pages_per_sec
- 1)
801 >> sbi
->log_blocks_per_seg
) / sbi
->segs_per_sec
;
804 static inline block_t
valid_user_blocks(struct f2fs_sb_info
*sbi
)
806 return sbi
->total_valid_block_count
;
809 static inline unsigned long __bitmap_size(struct f2fs_sb_info
*sbi
, int flag
)
811 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
813 /* return NAT or SIT bitmap */
814 if (flag
== NAT_BITMAP
)
815 return le32_to_cpu(ckpt
->nat_ver_bitmap_bytesize
);
816 else if (flag
== SIT_BITMAP
)
817 return le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
);
822 static inline void *__bitmap_ptr(struct f2fs_sb_info
*sbi
, int flag
)
824 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
827 if (le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_payload
) > 0) {
828 if (flag
== NAT_BITMAP
)
829 return &ckpt
->sit_nat_version_bitmap
;
831 return (unsigned char *)ckpt
+ F2FS_BLKSIZE
;
833 offset
= (flag
== NAT_BITMAP
) ?
834 le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
) : 0;
835 return &ckpt
->sit_nat_version_bitmap
+ offset
;
839 static inline block_t
__start_cp_addr(struct f2fs_sb_info
*sbi
)
842 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
843 unsigned long long ckpt_version
= cur_cp_version(ckpt
);
845 start_addr
= le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_blkaddr
);
848 * odd numbered checkpoint should at cp segment 0
849 * and even segment must be at cp segment 1
851 if (!(ckpt_version
& 1))
852 start_addr
+= sbi
->blocks_per_seg
;
857 static inline block_t
__start_sum_addr(struct f2fs_sb_info
*sbi
)
859 return le32_to_cpu(F2FS_CKPT(sbi
)->cp_pack_start_sum
);
862 static inline bool inc_valid_node_count(struct f2fs_sb_info
*sbi
,
865 block_t valid_block_count
;
866 unsigned int valid_node_count
;
868 spin_lock(&sbi
->stat_lock
);
870 valid_block_count
= sbi
->total_valid_block_count
+ 1;
871 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
872 spin_unlock(&sbi
->stat_lock
);
876 valid_node_count
= sbi
->total_valid_node_count
+ 1;
877 if (unlikely(valid_node_count
> sbi
->total_node_count
)) {
878 spin_unlock(&sbi
->stat_lock
);
885 sbi
->alloc_valid_block_count
++;
886 sbi
->total_valid_node_count
++;
887 sbi
->total_valid_block_count
++;
888 spin_unlock(&sbi
->stat_lock
);
893 static inline void dec_valid_node_count(struct f2fs_sb_info
*sbi
,
896 spin_lock(&sbi
->stat_lock
);
898 f2fs_bug_on(sbi
, !sbi
->total_valid_block_count
);
899 f2fs_bug_on(sbi
, !sbi
->total_valid_node_count
);
900 f2fs_bug_on(sbi
, !inode
->i_blocks
);
903 sbi
->total_valid_node_count
--;
904 sbi
->total_valid_block_count
--;
906 spin_unlock(&sbi
->stat_lock
);
909 static inline unsigned int valid_node_count(struct f2fs_sb_info
*sbi
)
911 return sbi
->total_valid_node_count
;
914 static inline void inc_valid_inode_count(struct f2fs_sb_info
*sbi
)
916 spin_lock(&sbi
->stat_lock
);
917 f2fs_bug_on(sbi
, sbi
->total_valid_inode_count
== sbi
->total_node_count
);
918 sbi
->total_valid_inode_count
++;
919 spin_unlock(&sbi
->stat_lock
);
922 static inline void dec_valid_inode_count(struct f2fs_sb_info
*sbi
)
924 spin_lock(&sbi
->stat_lock
);
925 f2fs_bug_on(sbi
, !sbi
->total_valid_inode_count
);
926 sbi
->total_valid_inode_count
--;
927 spin_unlock(&sbi
->stat_lock
);
930 static inline unsigned int valid_inode_count(struct f2fs_sb_info
*sbi
)
932 return sbi
->total_valid_inode_count
;
935 static inline void f2fs_put_page(struct page
*page
, int unlock
)
941 f2fs_bug_on(F2FS_P_SB(page
), !PageLocked(page
));
944 page_cache_release(page
);
947 static inline void f2fs_put_dnode(struct dnode_of_data
*dn
)
950 f2fs_put_page(dn
->node_page
, 1);
951 if (dn
->inode_page
&& dn
->node_page
!= dn
->inode_page
)
952 f2fs_put_page(dn
->inode_page
, 0);
953 dn
->node_page
= NULL
;
954 dn
->inode_page
= NULL
;
957 static inline struct kmem_cache
*f2fs_kmem_cache_create(const char *name
,
960 return kmem_cache_create(name
, size
, 0, SLAB_RECLAIM_ACCOUNT
, NULL
);
963 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache
*cachep
,
968 entry
= kmem_cache_alloc(cachep
, flags
);
977 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
979 static inline bool IS_INODE(struct page
*page
)
981 struct f2fs_node
*p
= F2FS_NODE(page
);
982 return RAW_IS_INODE(p
);
985 static inline __le32
*blkaddr_in_node(struct f2fs_node
*node
)
987 return RAW_IS_INODE(node
) ? node
->i
.i_addr
: node
->dn
.addr
;
990 static inline block_t
datablock_addr(struct page
*node_page
,
993 struct f2fs_node
*raw_node
;
995 raw_node
= F2FS_NODE(node_page
);
996 addr_array
= blkaddr_in_node(raw_node
);
997 return le32_to_cpu(addr_array
[offset
]);
1000 static inline int f2fs_test_bit(unsigned int nr
, char *addr
)
1005 mask
= 1 << (7 - (nr
& 0x07));
1006 return mask
& *addr
;
1009 static inline int f2fs_set_bit(unsigned int nr
, char *addr
)
1015 mask
= 1 << (7 - (nr
& 0x07));
1021 static inline int f2fs_clear_bit(unsigned int nr
, char *addr
)
1027 mask
= 1 << (7 - (nr
& 0x07));
1033 /* used for f2fs_inode_info->flags */
1035 FI_NEW_INODE
, /* indicate newly allocated inode */
1036 FI_DIRTY_INODE
, /* indicate inode is dirty or not */
1037 FI_DIRTY_DIR
, /* indicate directory has dirty pages */
1038 FI_INC_LINK
, /* need to increment i_nlink */
1039 FI_ACL_MODE
, /* indicate acl mode */
1040 FI_NO_ALLOC
, /* should not allocate any blocks */
1041 FI_UPDATE_DIR
, /* should update inode block for consistency */
1042 FI_DELAY_IPUT
, /* used for the recovery */
1043 FI_NO_EXTENT
, /* not to use the extent cache */
1044 FI_INLINE_XATTR
, /* used for inline xattr */
1045 FI_INLINE_DATA
, /* used for inline data*/
1046 FI_APPEND_WRITE
, /* inode has appended data */
1047 FI_UPDATE_WRITE
, /* inode has in-place-update data */
1048 FI_NEED_IPU
, /* used fo ipu for fdatasync */
1051 static inline void set_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1053 if (!test_bit(flag
, &fi
->flags
))
1054 set_bit(flag
, &fi
->flags
);
1057 static inline int is_inode_flag_set(struct f2fs_inode_info
*fi
, int flag
)
1059 return test_bit(flag
, &fi
->flags
);
1062 static inline void clear_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1064 if (test_bit(flag
, &fi
->flags
))
1065 clear_bit(flag
, &fi
->flags
);
1068 static inline void set_acl_inode(struct f2fs_inode_info
*fi
, umode_t mode
)
1070 fi
->i_acl_mode
= mode
;
1071 set_inode_flag(fi
, FI_ACL_MODE
);
1074 static inline int cond_clear_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1076 if (is_inode_flag_set(fi
, FI_ACL_MODE
)) {
1077 clear_inode_flag(fi
, FI_ACL_MODE
);
1083 static inline void get_inline_info(struct f2fs_inode_info
*fi
,
1084 struct f2fs_inode
*ri
)
1086 if (ri
->i_inline
& F2FS_INLINE_XATTR
)
1087 set_inode_flag(fi
, FI_INLINE_XATTR
);
1088 if (ri
->i_inline
& F2FS_INLINE_DATA
)
1089 set_inode_flag(fi
, FI_INLINE_DATA
);
1092 static inline void set_raw_inline(struct f2fs_inode_info
*fi
,
1093 struct f2fs_inode
*ri
)
1097 if (is_inode_flag_set(fi
, FI_INLINE_XATTR
))
1098 ri
->i_inline
|= F2FS_INLINE_XATTR
;
1099 if (is_inode_flag_set(fi
, FI_INLINE_DATA
))
1100 ri
->i_inline
|= F2FS_INLINE_DATA
;
1103 static inline int f2fs_has_inline_xattr(struct inode
*inode
)
1105 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_XATTR
);
1108 static inline unsigned int addrs_per_inode(struct f2fs_inode_info
*fi
)
1110 if (f2fs_has_inline_xattr(&fi
->vfs_inode
))
1111 return DEF_ADDRS_PER_INODE
- F2FS_INLINE_XATTR_ADDRS
;
1112 return DEF_ADDRS_PER_INODE
;
1115 static inline void *inline_xattr_addr(struct page
*page
)
1117 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1118 return (void *)&(ri
->i_addr
[DEF_ADDRS_PER_INODE
-
1119 F2FS_INLINE_XATTR_ADDRS
]);
1122 static inline int inline_xattr_size(struct inode
*inode
)
1124 if (f2fs_has_inline_xattr(inode
))
1125 return F2FS_INLINE_XATTR_ADDRS
<< 2;
1130 static inline int f2fs_has_inline_data(struct inode
*inode
)
1132 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DATA
);
1135 static inline void *inline_data_addr(struct page
*page
)
1137 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1138 return (void *)&(ri
->i_addr
[1]);
1141 static inline int f2fs_readonly(struct super_block
*sb
)
1143 return sb
->s_flags
& MS_RDONLY
;
1146 static inline bool f2fs_cp_error(struct f2fs_sb_info
*sbi
)
1148 return is_set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1151 static inline void f2fs_stop_checkpoint(struct f2fs_sb_info
*sbi
)
1153 set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1154 sbi
->sb
->s_flags
|= MS_RDONLY
;
1157 #define get_inode_mode(i) \
1158 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1159 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1161 /* get offset of first page in next direct node */
1162 #define PGOFS_OF_NEXT_DNODE(pgofs, fi) \
1163 ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \
1164 (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \
1165 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi))
1170 int f2fs_sync_file(struct file
*, loff_t
, loff_t
, int);
1171 void truncate_data_blocks(struct dnode_of_data
*);
1172 int truncate_blocks(struct inode
*, u64
, bool);
1173 void f2fs_truncate(struct inode
*);
1174 int f2fs_getattr(struct vfsmount
*, struct dentry
*, struct kstat
*);
1175 int f2fs_setattr(struct dentry
*, struct iattr
*);
1176 int truncate_hole(struct inode
*, pgoff_t
, pgoff_t
);
1177 int truncate_data_blocks_range(struct dnode_of_data
*, int);
1178 long f2fs_ioctl(struct file
*, unsigned int, unsigned long);
1179 long f2fs_compat_ioctl(struct file
*, unsigned int, unsigned long);
1184 void f2fs_set_inode_flags(struct inode
*);
1185 struct inode
*f2fs_iget(struct super_block
*, unsigned long);
1186 int try_to_free_nats(struct f2fs_sb_info
*, int);
1187 void update_inode(struct inode
*, struct page
*);
1188 void update_inode_page(struct inode
*);
1189 int f2fs_write_inode(struct inode
*, struct writeback_control
*);
1190 void f2fs_evict_inode(struct inode
*);
1195 struct dentry
*f2fs_get_parent(struct dentry
*child
);
1200 struct f2fs_dir_entry
*f2fs_find_entry(struct inode
*, struct qstr
*,
1202 struct f2fs_dir_entry
*f2fs_parent_dir(struct inode
*, struct page
**);
1203 ino_t
f2fs_inode_by_name(struct inode
*, struct qstr
*);
1204 void f2fs_set_link(struct inode
*, struct f2fs_dir_entry
*,
1205 struct page
*, struct inode
*);
1206 int update_dent_inode(struct inode
*, const struct qstr
*);
1207 int __f2fs_add_link(struct inode
*, const struct qstr
*, struct inode
*);
1208 void f2fs_delete_entry(struct f2fs_dir_entry
*, struct page
*, struct inode
*);
1209 int f2fs_do_tmpfile(struct inode
*, struct inode
*);
1210 int f2fs_make_empty(struct inode
*, struct inode
*);
1211 bool f2fs_empty_dir(struct inode
*);
1213 static inline int f2fs_add_link(struct dentry
*dentry
, struct inode
*inode
)
1215 return __f2fs_add_link(dentry
->d_parent
->d_inode
, &dentry
->d_name
,
1222 int f2fs_sync_fs(struct super_block
*, int);
1223 extern __printf(3, 4)
1224 void f2fs_msg(struct super_block
*, const char *, const char *, ...);
1229 f2fs_hash_t
f2fs_dentry_hash(const struct qstr
*);
1234 struct dnode_of_data
;
1237 bool available_free_memory(struct f2fs_sb_info
*, int);
1238 bool is_checkpointed_node(struct f2fs_sb_info
*, nid_t
);
1239 bool has_fsynced_inode(struct f2fs_sb_info
*, nid_t
);
1240 bool need_inode_block_update(struct f2fs_sb_info
*, nid_t
);
1241 void get_node_info(struct f2fs_sb_info
*, nid_t
, struct node_info
*);
1242 int get_dnode_of_data(struct dnode_of_data
*, pgoff_t
, int);
1243 int truncate_inode_blocks(struct inode
*, pgoff_t
);
1244 int truncate_xattr_node(struct inode
*, struct page
*);
1245 int wait_on_node_pages_writeback(struct f2fs_sb_info
*, nid_t
);
1246 void remove_inode_page(struct inode
*);
1247 struct page
*new_inode_page(struct inode
*);
1248 struct page
*new_node_page(struct dnode_of_data
*, unsigned int, struct page
*);
1249 void ra_node_page(struct f2fs_sb_info
*, nid_t
);
1250 struct page
*get_node_page(struct f2fs_sb_info
*, pgoff_t
);
1251 struct page
*get_node_page_ra(struct page
*, int);
1252 void sync_inode_page(struct dnode_of_data
*);
1253 int sync_node_pages(struct f2fs_sb_info
*, nid_t
, struct writeback_control
*);
1254 bool alloc_nid(struct f2fs_sb_info
*, nid_t
*);
1255 void alloc_nid_done(struct f2fs_sb_info
*, nid_t
);
1256 void alloc_nid_failed(struct f2fs_sb_info
*, nid_t
);
1257 void recover_inline_xattr(struct inode
*, struct page
*);
1258 void recover_xattr_data(struct inode
*, struct page
*, block_t
);
1259 int recover_inode_page(struct f2fs_sb_info
*, struct page
*);
1260 int restore_node_summary(struct f2fs_sb_info
*, unsigned int,
1261 struct f2fs_summary_block
*);
1262 void flush_nat_entries(struct f2fs_sb_info
*);
1263 int build_node_manager(struct f2fs_sb_info
*);
1264 void destroy_node_manager(struct f2fs_sb_info
*);
1265 int __init
create_node_manager_caches(void);
1266 void destroy_node_manager_caches(void);
1271 void f2fs_balance_fs(struct f2fs_sb_info
*);
1272 void f2fs_balance_fs_bg(struct f2fs_sb_info
*);
1273 int f2fs_issue_flush(struct f2fs_sb_info
*);
1274 int create_flush_cmd_control(struct f2fs_sb_info
*);
1275 void destroy_flush_cmd_control(struct f2fs_sb_info
*);
1276 void invalidate_blocks(struct f2fs_sb_info
*, block_t
);
1277 void refresh_sit_entry(struct f2fs_sb_info
*, block_t
, block_t
);
1278 void clear_prefree_segments(struct f2fs_sb_info
*);
1279 void discard_next_dnode(struct f2fs_sb_info
*, block_t
);
1280 int npages_for_summary_flush(struct f2fs_sb_info
*);
1281 void allocate_new_segments(struct f2fs_sb_info
*);
1282 struct page
*get_sum_page(struct f2fs_sb_info
*, unsigned int);
1283 void write_meta_page(struct f2fs_sb_info
*, struct page
*);
1284 void write_node_page(struct f2fs_sb_info
*, struct page
*,
1285 struct f2fs_io_info
*, unsigned int, block_t
, block_t
*);
1286 void write_data_page(struct page
*, struct dnode_of_data
*, block_t
*,
1287 struct f2fs_io_info
*);
1288 void rewrite_data_page(struct page
*, block_t
, struct f2fs_io_info
*);
1289 void recover_data_page(struct f2fs_sb_info
*, struct page
*,
1290 struct f2fs_summary
*, block_t
, block_t
);
1291 void allocate_data_block(struct f2fs_sb_info
*, struct page
*,
1292 block_t
, block_t
*, struct f2fs_summary
*, int);
1293 void f2fs_wait_on_page_writeback(struct page
*, enum page_type
);
1294 void write_data_summaries(struct f2fs_sb_info
*, block_t
);
1295 void write_node_summaries(struct f2fs_sb_info
*, block_t
);
1296 int lookup_journal_in_cursum(struct f2fs_summary_block
*,
1297 int, unsigned int, int);
1298 void flush_sit_entries(struct f2fs_sb_info
*);
1299 int build_segment_manager(struct f2fs_sb_info
*);
1300 void destroy_segment_manager(struct f2fs_sb_info
*);
1301 int __init
create_segment_manager_caches(void);
1302 void destroy_segment_manager_caches(void);
1307 struct page
*grab_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1308 struct page
*get_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1309 struct page
*get_meta_page_ra(struct f2fs_sb_info
*, pgoff_t
);
1310 int ra_meta_pages(struct f2fs_sb_info
*, block_t
, int, int);
1311 long sync_meta_pages(struct f2fs_sb_info
*, enum page_type
, long);
1312 void add_dirty_inode(struct f2fs_sb_info
*, nid_t
, int type
);
1313 void remove_dirty_inode(struct f2fs_sb_info
*, nid_t
, int type
);
1314 void release_dirty_inode(struct f2fs_sb_info
*);
1315 bool exist_written_data(struct f2fs_sb_info
*, nid_t
, int);
1316 int acquire_orphan_inode(struct f2fs_sb_info
*);
1317 void release_orphan_inode(struct f2fs_sb_info
*);
1318 void add_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1319 void remove_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1320 void recover_orphan_inodes(struct f2fs_sb_info
*);
1321 int get_valid_checkpoint(struct f2fs_sb_info
*);
1322 void update_dirty_page(struct inode
*, struct page
*);
1323 void add_dirty_dir_inode(struct inode
*);
1324 void remove_dirty_dir_inode(struct inode
*);
1325 void sync_dirty_dir_inodes(struct f2fs_sb_info
*);
1326 void write_checkpoint(struct f2fs_sb_info
*, struct cp_control
*);
1327 void init_ino_entry_info(struct f2fs_sb_info
*);
1328 int __init
create_checkpoint_caches(void);
1329 void destroy_checkpoint_caches(void);
1334 void f2fs_submit_merged_bio(struct f2fs_sb_info
*, enum page_type
, int);
1335 int f2fs_submit_page_bio(struct f2fs_sb_info
*, struct page
*, block_t
, int);
1336 void f2fs_submit_page_mbio(struct f2fs_sb_info
*, struct page
*, block_t
,
1337 struct f2fs_io_info
*);
1338 int reserve_new_block(struct dnode_of_data
*);
1339 int f2fs_reserve_block(struct dnode_of_data
*, pgoff_t
);
1340 void update_extent_cache(block_t
, struct dnode_of_data
*);
1341 struct page
*find_data_page(struct inode
*, pgoff_t
, bool);
1342 struct page
*get_lock_data_page(struct inode
*, pgoff_t
);
1343 struct page
*get_new_data_page(struct inode
*, struct page
*, pgoff_t
, bool);
1344 int do_write_data_page(struct page
*, struct f2fs_io_info
*);
1345 int f2fs_fiemap(struct inode
*inode
, struct fiemap_extent_info
*, u64
, u64
);
1350 int start_gc_thread(struct f2fs_sb_info
*);
1351 void stop_gc_thread(struct f2fs_sb_info
*);
1352 block_t
start_bidx_of_node(unsigned int, struct f2fs_inode_info
*);
1353 int f2fs_gc(struct f2fs_sb_info
*);
1354 void build_gc_manager(struct f2fs_sb_info
*);
1355 int __init
create_gc_caches(void);
1356 void destroy_gc_caches(void);
1361 int recover_fsync_data(struct f2fs_sb_info
*);
1362 bool space_for_roll_forward(struct f2fs_sb_info
*);
1367 #ifdef CONFIG_F2FS_STAT_FS
1368 struct f2fs_stat_info
{
1369 struct list_head stat_list
;
1370 struct f2fs_sb_info
*sbi
;
1371 int all_area_segs
, sit_area_segs
, nat_area_segs
, ssa_area_segs
;
1372 int main_area_segs
, main_area_sections
, main_area_zones
;
1373 int hit_ext
, total_ext
;
1374 int ndirty_node
, ndirty_dent
, ndirty_dirs
, ndirty_meta
;
1375 int nats
, sits
, fnids
;
1376 int total_count
, utilization
;
1377 int bg_gc
, inline_inode
;
1378 unsigned int valid_count
, valid_node_count
, valid_inode_count
;
1379 unsigned int bimodal
, avg_vblocks
;
1380 int util_free
, util_valid
, util_invalid
;
1381 int rsvd_segs
, overp_segs
;
1382 int dirty_count
, node_pages
, meta_pages
;
1383 int prefree_count
, call_count
, cp_count
;
1384 int tot_segs
, node_segs
, data_segs
, free_segs
, free_secs
;
1385 int tot_blks
, data_blks
, node_blks
;
1386 int curseg
[NR_CURSEG_TYPE
];
1387 int cursec
[NR_CURSEG_TYPE
];
1388 int curzone
[NR_CURSEG_TYPE
];
1390 unsigned int segment_count
[2];
1391 unsigned int block_count
[2];
1392 unsigned base_mem
, cache_mem
;
1395 static inline struct f2fs_stat_info
*F2FS_STAT(struct f2fs_sb_info
*sbi
)
1397 return (struct f2fs_stat_info
*)sbi
->stat_info
;
1400 #define stat_inc_cp_count(si) ((si)->cp_count++)
1401 #define stat_inc_call_count(si) ((si)->call_count++)
1402 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1403 #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1404 #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
1405 #define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++)
1406 #define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++)
1407 #define stat_inc_inline_inode(inode) \
1409 if (f2fs_has_inline_data(inode)) \
1410 ((F2FS_I_SB(inode))->inline_inode++); \
1412 #define stat_dec_inline_inode(inode) \
1414 if (f2fs_has_inline_data(inode)) \
1415 ((F2FS_I_SB(inode))->inline_inode--); \
1418 #define stat_inc_seg_type(sbi, curseg) \
1419 ((sbi)->segment_count[(curseg)->alloc_type]++)
1420 #define stat_inc_block_count(sbi, curseg) \
1421 ((sbi)->block_count[(curseg)->alloc_type]++)
1423 #define stat_inc_seg_count(sbi, type) \
1425 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1427 if (type == SUM_TYPE_DATA) \
1433 #define stat_inc_tot_blk_count(si, blks) \
1434 (si->tot_blks += (blks))
1436 #define stat_inc_data_blk_count(sbi, blks) \
1438 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1439 stat_inc_tot_blk_count(si, blks); \
1440 si->data_blks += (blks); \
1443 #define stat_inc_node_blk_count(sbi, blks) \
1445 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1446 stat_inc_tot_blk_count(si, blks); \
1447 si->node_blks += (blks); \
1450 int f2fs_build_stats(struct f2fs_sb_info
*);
1451 void f2fs_destroy_stats(struct f2fs_sb_info
*);
1452 void __init
f2fs_create_root_stats(void);
1453 void f2fs_destroy_root_stats(void);
1455 #define stat_inc_cp_count(si)
1456 #define stat_inc_call_count(si)
1457 #define stat_inc_bggc_count(si)
1458 #define stat_inc_dirty_dir(sbi)
1459 #define stat_dec_dirty_dir(sbi)
1460 #define stat_inc_total_hit(sb)
1461 #define stat_inc_read_hit(sb)
1462 #define stat_inc_inline_inode(inode)
1463 #define stat_dec_inline_inode(inode)
1464 #define stat_inc_seg_type(sbi, curseg)
1465 #define stat_inc_block_count(sbi, curseg)
1466 #define stat_inc_seg_count(si, type)
1467 #define stat_inc_tot_blk_count(si, blks)
1468 #define stat_inc_data_blk_count(si, blks)
1469 #define stat_inc_node_blk_count(sbi, blks)
1471 static inline int f2fs_build_stats(struct f2fs_sb_info
*sbi
) { return 0; }
1472 static inline void f2fs_destroy_stats(struct f2fs_sb_info
*sbi
) { }
1473 static inline void __init
f2fs_create_root_stats(void) { }
1474 static inline void f2fs_destroy_root_stats(void) { }
1477 extern const struct file_operations f2fs_dir_operations
;
1478 extern const struct file_operations f2fs_file_operations
;
1479 extern const struct inode_operations f2fs_file_inode_operations
;
1480 extern const struct address_space_operations f2fs_dblock_aops
;
1481 extern const struct address_space_operations f2fs_node_aops
;
1482 extern const struct address_space_operations f2fs_meta_aops
;
1483 extern const struct inode_operations f2fs_dir_inode_operations
;
1484 extern const struct inode_operations f2fs_symlink_inode_operations
;
1485 extern const struct inode_operations f2fs_special_inode_operations
;
1490 bool f2fs_may_inline(struct inode
*);
1491 int f2fs_read_inline_data(struct inode
*, struct page
*);
1492 int f2fs_convert_inline_data(struct inode
*, pgoff_t
, struct page
*);
1493 int f2fs_write_inline_data(struct inode
*, struct page
*, unsigned int);
1494 void truncate_inline_data(struct inode
*, u64
);
1495 bool recover_inline_data(struct inode
*, struct page
*);