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
216 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
217 * as its node offset to distinguish from index node blocks.
218 * But some bits are used to mark the node block.
220 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
223 ALLOC_NODE
, /* allocate a new node page if needed */
224 LOOKUP_NODE
, /* look up a node without readahead */
226 * look up a node with readahead called
231 #define F2FS_LINK_MAX 32000 /* maximum link count per file */
233 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
235 /* for in-memory extent cache entry */
236 #define F2FS_MIN_EXTENT_LEN 16 /* minimum extent length */
239 rwlock_t ext_lock
; /* rwlock for consistency */
240 unsigned int fofs
; /* start offset in a file */
241 u32 blk_addr
; /* start block address of the extent */
242 unsigned int len
; /* length of the extent */
246 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
248 #define FADVISE_COLD_BIT 0x01
249 #define FADVISE_LOST_PINO_BIT 0x02
251 #define DEF_DIR_LEVEL 0
253 struct f2fs_inode_info
{
254 struct inode vfs_inode
; /* serve a vfs inode */
255 unsigned long i_flags
; /* keep an inode flags for ioctl */
256 unsigned char i_advise
; /* use to give file attribute hints */
257 unsigned char i_dir_level
; /* use for dentry level for large dir */
258 unsigned int i_current_depth
; /* use only in directory structure */
259 unsigned int i_pino
; /* parent inode number */
260 umode_t i_acl_mode
; /* keep file acl mode temporarily */
262 /* Use below internally in f2fs*/
263 unsigned long flags
; /* use to pass per-file flags */
264 struct rw_semaphore i_sem
; /* protect fi info */
265 atomic_t dirty_pages
; /* # of dirty pages */
266 f2fs_hash_t chash
; /* hash value of given file name */
267 unsigned int clevel
; /* maximum level of given file name */
268 nid_t i_xattr_nid
; /* node id that contains xattrs */
269 unsigned long long xattr_ver
; /* cp version of xattr modification */
270 struct extent_info ext
; /* in-memory extent cache entry */
271 struct dir_inode_entry
*dirty_dir
; /* the pointer of dirty dir */
273 struct radix_tree_root inmem_root
; /* radix tree for inmem pages */
274 struct list_head inmem_pages
; /* inmemory pages managed by f2fs */
275 struct mutex inmem_lock
; /* lock for inmemory pages */
278 static inline void get_extent_info(struct extent_info
*ext
,
279 struct f2fs_extent i_ext
)
281 write_lock(&ext
->ext_lock
);
282 ext
->fofs
= le32_to_cpu(i_ext
.fofs
);
283 ext
->blk_addr
= le32_to_cpu(i_ext
.blk_addr
);
284 ext
->len
= le32_to_cpu(i_ext
.len
);
285 write_unlock(&ext
->ext_lock
);
288 static inline void set_raw_extent(struct extent_info
*ext
,
289 struct f2fs_extent
*i_ext
)
291 read_lock(&ext
->ext_lock
);
292 i_ext
->fofs
= cpu_to_le32(ext
->fofs
);
293 i_ext
->blk_addr
= cpu_to_le32(ext
->blk_addr
);
294 i_ext
->len
= cpu_to_le32(ext
->len
);
295 read_unlock(&ext
->ext_lock
);
298 struct f2fs_nm_info
{
299 block_t nat_blkaddr
; /* base disk address of NAT */
300 nid_t max_nid
; /* maximum possible node ids */
301 nid_t available_nids
; /* maximum available node ids */
302 nid_t next_scan_nid
; /* the next nid to be scanned */
303 unsigned int ram_thresh
; /* control the memory footprint */
305 /* NAT cache management */
306 struct radix_tree_root nat_root
;/* root of the nat entry cache */
307 struct radix_tree_root nat_set_root
;/* root of the nat set cache */
308 rwlock_t nat_tree_lock
; /* protect nat_tree_lock */
309 struct list_head nat_entries
; /* cached nat entry list (clean) */
310 unsigned int nat_cnt
; /* the # of cached nat entries */
311 unsigned int dirty_nat_cnt
; /* total num of nat entries in set */
313 /* free node ids management */
314 struct radix_tree_root free_nid_root
;/* root of the free_nid cache */
315 struct list_head free_nid_list
; /* a list for free nids */
316 spinlock_t free_nid_list_lock
; /* protect free nid list */
317 unsigned int fcnt
; /* the number of free node id */
318 struct mutex build_lock
; /* lock for build free nids */
321 char *nat_bitmap
; /* NAT bitmap pointer */
322 int bitmap_size
; /* bitmap size */
326 * this structure is used as one of function parameters.
327 * all the information are dedicated to a given direct node block determined
328 * by the data offset in a file.
330 struct dnode_of_data
{
331 struct inode
*inode
; /* vfs inode pointer */
332 struct page
*inode_page
; /* its inode page, NULL is possible */
333 struct page
*node_page
; /* cached direct node page */
334 nid_t nid
; /* node id of the direct node block */
335 unsigned int ofs_in_node
; /* data offset in the node page */
336 bool inode_page_locked
; /* inode page is locked or not */
337 block_t data_blkaddr
; /* block address of the node block */
340 static inline void set_new_dnode(struct dnode_of_data
*dn
, struct inode
*inode
,
341 struct page
*ipage
, struct page
*npage
, nid_t nid
)
343 memset(dn
, 0, sizeof(*dn
));
345 dn
->inode_page
= ipage
;
346 dn
->node_page
= npage
;
353 * By default, there are 6 active log areas across the whole main area.
354 * When considering hot and cold data separation to reduce cleaning overhead,
355 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
357 * In the current design, you should not change the numbers intentionally.
358 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
359 * logs individually according to the underlying devices. (default: 6)
360 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
361 * data and 8 for node logs.
363 #define NR_CURSEG_DATA_TYPE (3)
364 #define NR_CURSEG_NODE_TYPE (3)
365 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
368 CURSEG_HOT_DATA
= 0, /* directory entry blocks */
369 CURSEG_WARM_DATA
, /* data blocks */
370 CURSEG_COLD_DATA
, /* multimedia or GCed data blocks */
371 CURSEG_HOT_NODE
, /* direct node blocks of directory files */
372 CURSEG_WARM_NODE
, /* direct node blocks of normal files */
373 CURSEG_COLD_NODE
, /* indirect node blocks */
378 struct completion wait
;
379 struct llist_node llnode
;
383 struct flush_cmd_control
{
384 struct task_struct
*f2fs_issue_flush
; /* flush thread */
385 wait_queue_head_t flush_wait_queue
; /* waiting queue for wake-up */
386 struct llist_head issue_list
; /* list for command issue */
387 struct llist_node
*dispatch_list
; /* list for command dispatch */
390 struct f2fs_sm_info
{
391 struct sit_info
*sit_info
; /* whole segment information */
392 struct free_segmap_info
*free_info
; /* free segment information */
393 struct dirty_seglist_info
*dirty_info
; /* dirty segment information */
394 struct curseg_info
*curseg_array
; /* active segment information */
396 block_t seg0_blkaddr
; /* block address of 0'th segment */
397 block_t main_blkaddr
; /* start block address of main area */
398 block_t ssa_blkaddr
; /* start block address of SSA area */
400 unsigned int segment_count
; /* total # of segments */
401 unsigned int main_segments
; /* # of segments in main area */
402 unsigned int reserved_segments
; /* # of reserved segments */
403 unsigned int ovp_segments
; /* # of overprovision segments */
405 /* a threshold to reclaim prefree segments */
406 unsigned int rec_prefree_segments
;
408 /* for small discard management */
409 struct list_head discard_list
; /* 4KB discard list */
410 int nr_discards
; /* # of discards in the list */
411 int max_discards
; /* max. discards to be issued */
413 struct list_head sit_entry_set
; /* sit entry set list */
415 unsigned int ipu_policy
; /* in-place-update policy */
416 unsigned int min_ipu_util
; /* in-place-update threshold */
417 unsigned int min_fsync_blocks
; /* threshold for fsync */
419 /* for flush command control */
420 struct flush_cmd_control
*cmd_control_info
;
428 * COUNT_TYPE for monitoring
430 * f2fs monitors the number of several block types such as on-writeback,
431 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
442 * The below are the page types of bios used in submit_bio().
443 * The available types are:
444 * DATA User data pages. It operates as async mode.
445 * NODE Node pages. It operates as async mode.
446 * META FS metadata pages such as SIT, NAT, CP.
447 * NR_PAGE_TYPE The number of page types.
448 * META_FLUSH Make sure the previous pages are written
449 * with waiting the bio's completion
450 * ... Only can be used with META.
452 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
461 struct f2fs_io_info
{
462 enum page_type type
; /* contains DATA/NODE/META/META_FLUSH */
463 int rw
; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
466 #define is_read_io(rw) (((rw) & 1) == READ)
467 struct f2fs_bio_info
{
468 struct f2fs_sb_info
*sbi
; /* f2fs superblock */
469 struct bio
*bio
; /* bios to merge */
470 sector_t last_block_in_bio
; /* last block number */
471 struct f2fs_io_info fio
; /* store buffered io info. */
472 struct rw_semaphore io_rwsem
; /* blocking op for bio */
475 struct f2fs_sb_info
{
476 struct super_block
*sb
; /* pointer to VFS super block */
477 struct proc_dir_entry
*s_proc
; /* proc entry */
478 struct buffer_head
*raw_super_buf
; /* buffer head of raw sb */
479 struct f2fs_super_block
*raw_super
; /* raw super block pointer */
480 int s_dirty
; /* dirty flag for checkpoint */
481 bool need_fsck
; /* need fsck.f2fs to fix */
483 /* for node-related operations */
484 struct f2fs_nm_info
*nm_info
; /* node manager */
485 struct inode
*node_inode
; /* cache node blocks */
487 /* for segment-related operations */
488 struct f2fs_sm_info
*sm_info
; /* segment manager */
490 /* for bio operations */
491 struct f2fs_bio_info read_io
; /* for read bios */
492 struct f2fs_bio_info write_io
[NR_PAGE_TYPE
]; /* for write bios */
493 struct completion
*wait_io
; /* for completion bios */
496 struct f2fs_checkpoint
*ckpt
; /* raw checkpoint pointer */
497 struct inode
*meta_inode
; /* cache meta blocks */
498 struct mutex cp_mutex
; /* checkpoint procedure lock */
499 struct rw_semaphore cp_rwsem
; /* blocking FS operations */
500 struct rw_semaphore node_write
; /* locking node writes */
501 struct mutex writepages
; /* mutex for writepages() */
502 bool por_doing
; /* recovery is doing or not */
503 wait_queue_head_t cp_wait
;
505 /* for inode management */
506 struct radix_tree_root ino_root
[MAX_INO_ENTRY
]; /* ino entry array */
507 spinlock_t ino_lock
[MAX_INO_ENTRY
]; /* for ino entry lock */
508 struct list_head ino_list
[MAX_INO_ENTRY
]; /* inode list head */
510 /* for orphan inode, use 0'th array */
511 unsigned int n_orphans
; /* # of orphan inodes */
512 unsigned int max_orphans
; /* max orphan inodes */
514 /* for directory inode management */
515 struct list_head dir_inode_list
; /* dir inode list */
516 spinlock_t dir_inode_lock
; /* for dir inode list lock */
518 /* basic filesystem units */
519 unsigned int log_sectors_per_block
; /* log2 sectors per block */
520 unsigned int log_blocksize
; /* log2 block size */
521 unsigned int blocksize
; /* block size */
522 unsigned int root_ino_num
; /* root inode number*/
523 unsigned int node_ino_num
; /* node inode number*/
524 unsigned int meta_ino_num
; /* meta inode number*/
525 unsigned int log_blocks_per_seg
; /* log2 blocks per segment */
526 unsigned int blocks_per_seg
; /* blocks per segment */
527 unsigned int segs_per_sec
; /* segments per section */
528 unsigned int secs_per_zone
; /* sections per zone */
529 unsigned int total_sections
; /* total section count */
530 unsigned int total_node_count
; /* total node block count */
531 unsigned int total_valid_node_count
; /* valid node block count */
532 unsigned int total_valid_inode_count
; /* valid inode count */
533 int active_logs
; /* # of active logs */
534 int dir_level
; /* directory level */
536 block_t user_block_count
; /* # of user blocks */
537 block_t total_valid_block_count
; /* # of valid blocks */
538 block_t alloc_valid_block_count
; /* # of allocated blocks */
539 block_t last_valid_block_count
; /* for recovery */
540 u32 s_next_generation
; /* for NFS support */
541 atomic_t nr_pages
[NR_COUNT_TYPE
]; /* # of pages, see count_type */
543 struct f2fs_mount_info mount_opt
; /* mount options */
545 /* for cleaning operations */
546 struct mutex gc_mutex
; /* mutex for GC */
547 struct f2fs_gc_kthread
*gc_thread
; /* GC thread */
548 unsigned int cur_victim_sec
; /* current victim section num */
550 /* maximum # of trials to find a victim segment for SSR and GC */
551 unsigned int max_victim_search
;
554 * for stat information.
555 * one is for the LFS mode, and the other is for the SSR mode.
557 #ifdef CONFIG_F2FS_STAT_FS
558 struct f2fs_stat_info
*stat_info
; /* FS status information */
559 unsigned int segment_count
[2]; /* # of allocated segments */
560 unsigned int block_count
[2]; /* # of allocated blocks */
561 int total_hit_ext
, read_hit_ext
; /* extent cache hit ratio */
562 int inline_inode
; /* # of inline_data inodes */
563 int bg_gc
; /* background gc calls */
564 unsigned int n_dirty_dirs
; /* # of dir inodes */
566 unsigned int last_victim
[2]; /* last victim segment # */
567 spinlock_t stat_lock
; /* lock for stat operations */
569 /* For sysfs suppport */
570 struct kobject s_kobj
;
571 struct completion s_kobj_unregister
;
577 static inline struct f2fs_inode_info
*F2FS_I(struct inode
*inode
)
579 return container_of(inode
, struct f2fs_inode_info
, vfs_inode
);
582 static inline struct f2fs_sb_info
*F2FS_SB(struct super_block
*sb
)
584 return sb
->s_fs_info
;
587 static inline struct f2fs_sb_info
*F2FS_I_SB(struct inode
*inode
)
589 return F2FS_SB(inode
->i_sb
);
592 static inline struct f2fs_sb_info
*F2FS_M_SB(struct address_space
*mapping
)
594 return F2FS_I_SB(mapping
->host
);
597 static inline struct f2fs_sb_info
*F2FS_P_SB(struct page
*page
)
599 return F2FS_M_SB(page
->mapping
);
602 static inline struct f2fs_super_block
*F2FS_RAW_SUPER(struct f2fs_sb_info
*sbi
)
604 return (struct f2fs_super_block
*)(sbi
->raw_super
);
607 static inline struct f2fs_checkpoint
*F2FS_CKPT(struct f2fs_sb_info
*sbi
)
609 return (struct f2fs_checkpoint
*)(sbi
->ckpt
);
612 static inline struct f2fs_node
*F2FS_NODE(struct page
*page
)
614 return (struct f2fs_node
*)page_address(page
);
617 static inline struct f2fs_inode
*F2FS_INODE(struct page
*page
)
619 return &((struct f2fs_node
*)page_address(page
))->i
;
622 static inline struct f2fs_nm_info
*NM_I(struct f2fs_sb_info
*sbi
)
624 return (struct f2fs_nm_info
*)(sbi
->nm_info
);
627 static inline struct f2fs_sm_info
*SM_I(struct f2fs_sb_info
*sbi
)
629 return (struct f2fs_sm_info
*)(sbi
->sm_info
);
632 static inline struct sit_info
*SIT_I(struct f2fs_sb_info
*sbi
)
634 return (struct sit_info
*)(SM_I(sbi
)->sit_info
);
637 static inline struct free_segmap_info
*FREE_I(struct f2fs_sb_info
*sbi
)
639 return (struct free_segmap_info
*)(SM_I(sbi
)->free_info
);
642 static inline struct dirty_seglist_info
*DIRTY_I(struct f2fs_sb_info
*sbi
)
644 return (struct dirty_seglist_info
*)(SM_I(sbi
)->dirty_info
);
647 static inline struct address_space
*META_MAPPING(struct f2fs_sb_info
*sbi
)
649 return sbi
->meta_inode
->i_mapping
;
652 static inline struct address_space
*NODE_MAPPING(struct f2fs_sb_info
*sbi
)
654 return sbi
->node_inode
->i_mapping
;
657 static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info
*sbi
)
662 static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info
*sbi
)
667 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint
*cp
)
669 return le64_to_cpu(cp
->checkpoint_ver
);
672 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
674 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
675 return ckpt_flags
& f
;
678 static inline void set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
680 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
682 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
685 static inline void clear_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
687 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
689 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
692 static inline void f2fs_lock_op(struct f2fs_sb_info
*sbi
)
694 down_read(&sbi
->cp_rwsem
);
697 static inline void f2fs_unlock_op(struct f2fs_sb_info
*sbi
)
699 up_read(&sbi
->cp_rwsem
);
702 static inline void f2fs_lock_all(struct f2fs_sb_info
*sbi
)
704 f2fs_down_write(&sbi
->cp_rwsem
, &sbi
->cp_mutex
);
707 static inline void f2fs_unlock_all(struct f2fs_sb_info
*sbi
)
709 up_write(&sbi
->cp_rwsem
);
713 * Check whether the given nid is within node id range.
715 static inline int check_nid_range(struct f2fs_sb_info
*sbi
, nid_t nid
)
717 if (unlikely(nid
< F2FS_ROOT_INO(sbi
)))
719 if (unlikely(nid
>= NM_I(sbi
)->max_nid
))
724 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
727 * Check whether the inode has blocks or not
729 static inline int F2FS_HAS_BLOCKS(struct inode
*inode
)
731 if (F2FS_I(inode
)->i_xattr_nid
)
732 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
+ 1;
734 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
;
737 static inline bool f2fs_has_xattr_block(unsigned int ofs
)
739 return ofs
== XATTR_NODE_OFFSET
;
742 static inline bool inc_valid_block_count(struct f2fs_sb_info
*sbi
,
743 struct inode
*inode
, blkcnt_t count
)
745 block_t valid_block_count
;
747 spin_lock(&sbi
->stat_lock
);
749 sbi
->total_valid_block_count
+ (block_t
)count
;
750 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
751 spin_unlock(&sbi
->stat_lock
);
754 inode
->i_blocks
+= count
;
755 sbi
->total_valid_block_count
= valid_block_count
;
756 sbi
->alloc_valid_block_count
+= (block_t
)count
;
757 spin_unlock(&sbi
->stat_lock
);
761 static inline void dec_valid_block_count(struct f2fs_sb_info
*sbi
,
765 spin_lock(&sbi
->stat_lock
);
766 f2fs_bug_on(sbi
, sbi
->total_valid_block_count
< (block_t
) count
);
767 f2fs_bug_on(sbi
, inode
->i_blocks
< count
);
768 inode
->i_blocks
-= count
;
769 sbi
->total_valid_block_count
-= (block_t
)count
;
770 spin_unlock(&sbi
->stat_lock
);
773 static inline void inc_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
775 atomic_inc(&sbi
->nr_pages
[count_type
]);
776 F2FS_SET_SB_DIRT(sbi
);
779 static inline void inode_inc_dirty_pages(struct inode
*inode
)
781 atomic_inc(&F2FS_I(inode
)->dirty_pages
);
782 if (S_ISDIR(inode
->i_mode
))
783 inc_page_count(F2FS_I_SB(inode
), F2FS_DIRTY_DENTS
);
786 static inline void dec_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
788 atomic_dec(&sbi
->nr_pages
[count_type
]);
791 static inline void inode_dec_dirty_pages(struct inode
*inode
)
793 if (!S_ISDIR(inode
->i_mode
) && !S_ISREG(inode
->i_mode
))
796 atomic_dec(&F2FS_I(inode
)->dirty_pages
);
798 if (S_ISDIR(inode
->i_mode
))
799 dec_page_count(F2FS_I_SB(inode
), F2FS_DIRTY_DENTS
);
802 static inline int get_pages(struct f2fs_sb_info
*sbi
, int count_type
)
804 return atomic_read(&sbi
->nr_pages
[count_type
]);
807 static inline int get_dirty_pages(struct inode
*inode
)
809 return atomic_read(&F2FS_I(inode
)->dirty_pages
);
812 static inline int get_blocktype_secs(struct f2fs_sb_info
*sbi
, int block_type
)
814 unsigned int pages_per_sec
= sbi
->segs_per_sec
*
815 (1 << sbi
->log_blocks_per_seg
);
816 return ((get_pages(sbi
, block_type
) + pages_per_sec
- 1)
817 >> sbi
->log_blocks_per_seg
) / sbi
->segs_per_sec
;
820 static inline block_t
valid_user_blocks(struct f2fs_sb_info
*sbi
)
822 return sbi
->total_valid_block_count
;
825 static inline unsigned long __bitmap_size(struct f2fs_sb_info
*sbi
, int flag
)
827 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
829 /* return NAT or SIT bitmap */
830 if (flag
== NAT_BITMAP
)
831 return le32_to_cpu(ckpt
->nat_ver_bitmap_bytesize
);
832 else if (flag
== SIT_BITMAP
)
833 return le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
);
838 static inline void *__bitmap_ptr(struct f2fs_sb_info
*sbi
, int flag
)
840 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
843 if (le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_payload
) > 0) {
844 if (flag
== NAT_BITMAP
)
845 return &ckpt
->sit_nat_version_bitmap
;
847 return (unsigned char *)ckpt
+ F2FS_BLKSIZE
;
849 offset
= (flag
== NAT_BITMAP
) ?
850 le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
) : 0;
851 return &ckpt
->sit_nat_version_bitmap
+ offset
;
855 static inline block_t
__start_cp_addr(struct f2fs_sb_info
*sbi
)
858 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
859 unsigned long long ckpt_version
= cur_cp_version(ckpt
);
861 start_addr
= le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_blkaddr
);
864 * odd numbered checkpoint should at cp segment 0
865 * and even segment must be at cp segment 1
867 if (!(ckpt_version
& 1))
868 start_addr
+= sbi
->blocks_per_seg
;
873 static inline block_t
__start_sum_addr(struct f2fs_sb_info
*sbi
)
875 return le32_to_cpu(F2FS_CKPT(sbi
)->cp_pack_start_sum
);
878 static inline bool inc_valid_node_count(struct f2fs_sb_info
*sbi
,
881 block_t valid_block_count
;
882 unsigned int valid_node_count
;
884 spin_lock(&sbi
->stat_lock
);
886 valid_block_count
= sbi
->total_valid_block_count
+ 1;
887 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
888 spin_unlock(&sbi
->stat_lock
);
892 valid_node_count
= sbi
->total_valid_node_count
+ 1;
893 if (unlikely(valid_node_count
> sbi
->total_node_count
)) {
894 spin_unlock(&sbi
->stat_lock
);
901 sbi
->alloc_valid_block_count
++;
902 sbi
->total_valid_node_count
++;
903 sbi
->total_valid_block_count
++;
904 spin_unlock(&sbi
->stat_lock
);
909 static inline void dec_valid_node_count(struct f2fs_sb_info
*sbi
,
912 spin_lock(&sbi
->stat_lock
);
914 f2fs_bug_on(sbi
, !sbi
->total_valid_block_count
);
915 f2fs_bug_on(sbi
, !sbi
->total_valid_node_count
);
916 f2fs_bug_on(sbi
, !inode
->i_blocks
);
919 sbi
->total_valid_node_count
--;
920 sbi
->total_valid_block_count
--;
922 spin_unlock(&sbi
->stat_lock
);
925 static inline unsigned int valid_node_count(struct f2fs_sb_info
*sbi
)
927 return sbi
->total_valid_node_count
;
930 static inline void inc_valid_inode_count(struct f2fs_sb_info
*sbi
)
932 spin_lock(&sbi
->stat_lock
);
933 f2fs_bug_on(sbi
, sbi
->total_valid_inode_count
== sbi
->total_node_count
);
934 sbi
->total_valid_inode_count
++;
935 spin_unlock(&sbi
->stat_lock
);
938 static inline void dec_valid_inode_count(struct f2fs_sb_info
*sbi
)
940 spin_lock(&sbi
->stat_lock
);
941 f2fs_bug_on(sbi
, !sbi
->total_valid_inode_count
);
942 sbi
->total_valid_inode_count
--;
943 spin_unlock(&sbi
->stat_lock
);
946 static inline unsigned int valid_inode_count(struct f2fs_sb_info
*sbi
)
948 return sbi
->total_valid_inode_count
;
951 static inline void f2fs_put_page(struct page
*page
, int unlock
)
957 f2fs_bug_on(F2FS_P_SB(page
), !PageLocked(page
));
960 page_cache_release(page
);
963 static inline void f2fs_put_dnode(struct dnode_of_data
*dn
)
966 f2fs_put_page(dn
->node_page
, 1);
967 if (dn
->inode_page
&& dn
->node_page
!= dn
->inode_page
)
968 f2fs_put_page(dn
->inode_page
, 0);
969 dn
->node_page
= NULL
;
970 dn
->inode_page
= NULL
;
973 static inline struct kmem_cache
*f2fs_kmem_cache_create(const char *name
,
976 return kmem_cache_create(name
, size
, 0, SLAB_RECLAIM_ACCOUNT
, NULL
);
979 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache
*cachep
,
984 entry
= kmem_cache_alloc(cachep
, flags
);
993 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
995 static inline bool IS_INODE(struct page
*page
)
997 struct f2fs_node
*p
= F2FS_NODE(page
);
998 return RAW_IS_INODE(p
);
1001 static inline __le32
*blkaddr_in_node(struct f2fs_node
*node
)
1003 return RAW_IS_INODE(node
) ? node
->i
.i_addr
: node
->dn
.addr
;
1006 static inline block_t
datablock_addr(struct page
*node_page
,
1007 unsigned int offset
)
1009 struct f2fs_node
*raw_node
;
1011 raw_node
= F2FS_NODE(node_page
);
1012 addr_array
= blkaddr_in_node(raw_node
);
1013 return le32_to_cpu(addr_array
[offset
]);
1016 static inline int f2fs_test_bit(unsigned int nr
, char *addr
)
1021 mask
= 1 << (7 - (nr
& 0x07));
1022 return mask
& *addr
;
1025 static inline int f2fs_set_bit(unsigned int nr
, char *addr
)
1031 mask
= 1 << (7 - (nr
& 0x07));
1037 static inline int f2fs_clear_bit(unsigned int nr
, char *addr
)
1043 mask
= 1 << (7 - (nr
& 0x07));
1049 /* used for f2fs_inode_info->flags */
1051 FI_NEW_INODE
, /* indicate newly allocated inode */
1052 FI_DIRTY_INODE
, /* indicate inode is dirty or not */
1053 FI_DIRTY_DIR
, /* indicate directory has dirty pages */
1054 FI_INC_LINK
, /* need to increment i_nlink */
1055 FI_ACL_MODE
, /* indicate acl mode */
1056 FI_NO_ALLOC
, /* should not allocate any blocks */
1057 FI_UPDATE_DIR
, /* should update inode block for consistency */
1058 FI_DELAY_IPUT
, /* used for the recovery */
1059 FI_NO_EXTENT
, /* not to use the extent cache */
1060 FI_INLINE_XATTR
, /* used for inline xattr */
1061 FI_INLINE_DATA
, /* used for inline data*/
1062 FI_INLINE_DENTRY
, /* used for inline dentry */
1063 FI_APPEND_WRITE
, /* inode has appended data */
1064 FI_UPDATE_WRITE
, /* inode has in-place-update data */
1065 FI_NEED_IPU
, /* used for ipu per file */
1066 FI_ATOMIC_FILE
, /* indicate atomic file */
1067 FI_VOLATILE_FILE
, /* indicate volatile file */
1070 static inline void set_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1072 if (!test_bit(flag
, &fi
->flags
))
1073 set_bit(flag
, &fi
->flags
);
1076 static inline int is_inode_flag_set(struct f2fs_inode_info
*fi
, int flag
)
1078 return test_bit(flag
, &fi
->flags
);
1081 static inline void clear_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1083 if (test_bit(flag
, &fi
->flags
))
1084 clear_bit(flag
, &fi
->flags
);
1087 static inline void set_acl_inode(struct f2fs_inode_info
*fi
, umode_t mode
)
1089 fi
->i_acl_mode
= mode
;
1090 set_inode_flag(fi
, FI_ACL_MODE
);
1093 static inline int cond_clear_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1095 if (is_inode_flag_set(fi
, FI_ACL_MODE
)) {
1096 clear_inode_flag(fi
, FI_ACL_MODE
);
1102 static inline void get_inline_info(struct f2fs_inode_info
*fi
,
1103 struct f2fs_inode
*ri
)
1105 if (ri
->i_inline
& F2FS_INLINE_XATTR
)
1106 set_inode_flag(fi
, FI_INLINE_XATTR
);
1107 if (ri
->i_inline
& F2FS_INLINE_DATA
)
1108 set_inode_flag(fi
, FI_INLINE_DATA
);
1109 if (ri
->i_inline
& F2FS_INLINE_DENTRY
)
1110 set_inode_flag(fi
, FI_INLINE_DENTRY
);
1113 static inline void set_raw_inline(struct f2fs_inode_info
*fi
,
1114 struct f2fs_inode
*ri
)
1118 if (is_inode_flag_set(fi
, FI_INLINE_XATTR
))
1119 ri
->i_inline
|= F2FS_INLINE_XATTR
;
1120 if (is_inode_flag_set(fi
, FI_INLINE_DATA
))
1121 ri
->i_inline
|= F2FS_INLINE_DATA
;
1122 if (is_inode_flag_set(fi
, FI_INLINE_DENTRY
))
1123 ri
->i_inline
|= F2FS_INLINE_DENTRY
;
1126 static inline int f2fs_has_inline_xattr(struct inode
*inode
)
1128 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_XATTR
);
1131 static inline unsigned int addrs_per_inode(struct f2fs_inode_info
*fi
)
1133 if (f2fs_has_inline_xattr(&fi
->vfs_inode
))
1134 return DEF_ADDRS_PER_INODE
- F2FS_INLINE_XATTR_ADDRS
;
1135 return DEF_ADDRS_PER_INODE
;
1138 static inline void *inline_xattr_addr(struct page
*page
)
1140 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1141 return (void *)&(ri
->i_addr
[DEF_ADDRS_PER_INODE
-
1142 F2FS_INLINE_XATTR_ADDRS
]);
1145 static inline int inline_xattr_size(struct inode
*inode
)
1147 if (f2fs_has_inline_xattr(inode
))
1148 return F2FS_INLINE_XATTR_ADDRS
<< 2;
1153 static inline int f2fs_has_inline_data(struct inode
*inode
)
1155 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DATA
);
1158 static inline bool f2fs_is_atomic_file(struct inode
*inode
)
1160 return is_inode_flag_set(F2FS_I(inode
), FI_ATOMIC_FILE
);
1163 static inline bool f2fs_is_volatile_file(struct inode
*inode
)
1165 return is_inode_flag_set(F2FS_I(inode
), FI_VOLATILE_FILE
);
1168 static inline void *inline_data_addr(struct page
*page
)
1170 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1171 return (void *)&(ri
->i_addr
[1]);
1174 static inline int f2fs_has_inline_dentry(struct inode
*inode
)
1176 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DENTRY
);
1179 static inline void *inline_dentry_addr(struct page
*page
)
1181 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1182 return (void *)&(ri
->i_addr
[1]);
1185 static inline int f2fs_readonly(struct super_block
*sb
)
1187 return sb
->s_flags
& MS_RDONLY
;
1190 static inline bool f2fs_cp_error(struct f2fs_sb_info
*sbi
)
1192 return is_set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1195 static inline void f2fs_stop_checkpoint(struct f2fs_sb_info
*sbi
)
1197 set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1198 sbi
->sb
->s_flags
|= MS_RDONLY
;
1201 #define get_inode_mode(i) \
1202 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1203 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1205 /* get offset of first page in next direct node */
1206 #define PGOFS_OF_NEXT_DNODE(pgofs, fi) \
1207 ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \
1208 (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \
1209 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi))
1214 int f2fs_sync_file(struct file
*, loff_t
, loff_t
, int);
1215 void truncate_data_blocks(struct dnode_of_data
*);
1216 int truncate_blocks(struct inode
*, u64
, bool);
1217 void f2fs_truncate(struct inode
*);
1218 int f2fs_getattr(struct vfsmount
*, struct dentry
*, struct kstat
*);
1219 int f2fs_setattr(struct dentry
*, struct iattr
*);
1220 int truncate_hole(struct inode
*, pgoff_t
, pgoff_t
);
1221 int truncate_data_blocks_range(struct dnode_of_data
*, int);
1222 long f2fs_ioctl(struct file
*, unsigned int, unsigned long);
1223 long f2fs_compat_ioctl(struct file
*, unsigned int, unsigned long);
1228 void f2fs_set_inode_flags(struct inode
*);
1229 struct inode
*f2fs_iget(struct super_block
*, unsigned long);
1230 int try_to_free_nats(struct f2fs_sb_info
*, int);
1231 void update_inode(struct inode
*, struct page
*);
1232 void update_inode_page(struct inode
*);
1233 int f2fs_write_inode(struct inode
*, struct writeback_control
*);
1234 void f2fs_evict_inode(struct inode
*);
1235 void handle_failed_inode(struct inode
*);
1240 struct dentry
*f2fs_get_parent(struct dentry
*child
);
1245 extern unsigned char f2fs_filetype_table
[F2FS_FT_MAX
];
1246 bool early_match_name(size_t, f2fs_hash_t
, struct f2fs_dir_entry
*);
1247 void set_de_type(struct f2fs_dir_entry
*, struct inode
*);
1248 struct page
*init_inode_metadata(struct inode
*, struct inode
*,
1249 const struct qstr
*);
1250 void update_parent_metadata(struct inode
*, struct inode
*, unsigned int);
1251 void f2fs_drop_nlink(struct inode
*, struct inode
*, struct page
*);
1252 struct f2fs_dir_entry
*f2fs_find_entry(struct inode
*, struct qstr
*,
1254 struct f2fs_dir_entry
*f2fs_parent_dir(struct inode
*, struct page
**);
1255 ino_t
f2fs_inode_by_name(struct inode
*, struct qstr
*);
1256 void f2fs_set_link(struct inode
*, struct f2fs_dir_entry
*,
1257 struct page
*, struct inode
*);
1258 int update_dent_inode(struct inode
*, const struct qstr
*);
1259 int __f2fs_add_link(struct inode
*, const struct qstr
*, struct inode
*);
1260 void f2fs_delete_entry(struct f2fs_dir_entry
*, struct page
*, struct inode
*,
1262 int f2fs_do_tmpfile(struct inode
*, struct inode
*);
1263 int f2fs_make_empty(struct inode
*, struct inode
*);
1264 bool f2fs_empty_dir(struct inode
*);
1266 static inline int f2fs_add_link(struct dentry
*dentry
, struct inode
*inode
)
1268 return __f2fs_add_link(dentry
->d_parent
->d_inode
, &dentry
->d_name
,
1275 int f2fs_sync_fs(struct super_block
*, int);
1276 extern __printf(3, 4)
1277 void f2fs_msg(struct super_block
*, const char *, const char *, ...);
1282 f2fs_hash_t
f2fs_dentry_hash(const struct qstr
*);
1287 struct dnode_of_data
;
1290 bool available_free_memory(struct f2fs_sb_info
*, int);
1291 bool is_checkpointed_node(struct f2fs_sb_info
*, nid_t
);
1292 bool has_fsynced_inode(struct f2fs_sb_info
*, nid_t
);
1293 bool need_inode_block_update(struct f2fs_sb_info
*, nid_t
);
1294 void get_node_info(struct f2fs_sb_info
*, nid_t
, struct node_info
*);
1295 int get_dnode_of_data(struct dnode_of_data
*, pgoff_t
, int);
1296 int truncate_inode_blocks(struct inode
*, pgoff_t
);
1297 int truncate_xattr_node(struct inode
*, struct page
*);
1298 int wait_on_node_pages_writeback(struct f2fs_sb_info
*, nid_t
);
1299 void remove_inode_page(struct inode
*);
1300 struct page
*new_inode_page(struct inode
*);
1301 struct page
*new_node_page(struct dnode_of_data
*, unsigned int, struct page
*);
1302 void ra_node_page(struct f2fs_sb_info
*, nid_t
);
1303 struct page
*get_node_page(struct f2fs_sb_info
*, pgoff_t
);
1304 struct page
*get_node_page_ra(struct page
*, int);
1305 void sync_inode_page(struct dnode_of_data
*);
1306 int sync_node_pages(struct f2fs_sb_info
*, nid_t
, struct writeback_control
*);
1307 bool alloc_nid(struct f2fs_sb_info
*, nid_t
*);
1308 void alloc_nid_done(struct f2fs_sb_info
*, nid_t
);
1309 void alloc_nid_failed(struct f2fs_sb_info
*, nid_t
);
1310 void recover_inline_xattr(struct inode
*, struct page
*);
1311 void recover_xattr_data(struct inode
*, struct page
*, block_t
);
1312 int recover_inode_page(struct f2fs_sb_info
*, struct page
*);
1313 int restore_node_summary(struct f2fs_sb_info
*, unsigned int,
1314 struct f2fs_summary_block
*);
1315 void flush_nat_entries(struct f2fs_sb_info
*);
1316 int build_node_manager(struct f2fs_sb_info
*);
1317 void destroy_node_manager(struct f2fs_sb_info
*);
1318 int __init
create_node_manager_caches(void);
1319 void destroy_node_manager_caches(void);
1324 void register_inmem_page(struct inode
*, struct page
*);
1325 void invalidate_inmem_page(struct inode
*, struct page
*);
1326 void commit_inmem_pages(struct inode
*, bool);
1327 void f2fs_balance_fs(struct f2fs_sb_info
*);
1328 void f2fs_balance_fs_bg(struct f2fs_sb_info
*);
1329 int f2fs_issue_flush(struct f2fs_sb_info
*);
1330 int create_flush_cmd_control(struct f2fs_sb_info
*);
1331 void destroy_flush_cmd_control(struct f2fs_sb_info
*);
1332 void invalidate_blocks(struct f2fs_sb_info
*, block_t
);
1333 void refresh_sit_entry(struct f2fs_sb_info
*, block_t
, block_t
);
1334 void clear_prefree_segments(struct f2fs_sb_info
*);
1335 void release_discard_addrs(struct f2fs_sb_info
*);
1336 void discard_next_dnode(struct f2fs_sb_info
*, block_t
);
1337 int npages_for_summary_flush(struct f2fs_sb_info
*);
1338 void allocate_new_segments(struct f2fs_sb_info
*);
1339 int f2fs_trim_fs(struct f2fs_sb_info
*, struct fstrim_range
*);
1340 struct page
*get_sum_page(struct f2fs_sb_info
*, unsigned int);
1341 void write_meta_page(struct f2fs_sb_info
*, struct page
*);
1342 void write_node_page(struct f2fs_sb_info
*, struct page
*,
1343 struct f2fs_io_info
*, unsigned int, block_t
, block_t
*);
1344 void write_data_page(struct page
*, struct dnode_of_data
*, block_t
*,
1345 struct f2fs_io_info
*);
1346 void rewrite_data_page(struct page
*, block_t
, struct f2fs_io_info
*);
1347 void recover_data_page(struct f2fs_sb_info
*, struct page
*,
1348 struct f2fs_summary
*, block_t
, block_t
);
1349 void allocate_data_block(struct f2fs_sb_info
*, struct page
*,
1350 block_t
, block_t
*, struct f2fs_summary
*, int);
1351 void f2fs_wait_on_page_writeback(struct page
*, enum page_type
);
1352 void write_data_summaries(struct f2fs_sb_info
*, block_t
);
1353 void write_node_summaries(struct f2fs_sb_info
*, block_t
);
1354 int lookup_journal_in_cursum(struct f2fs_summary_block
*,
1355 int, unsigned int, int);
1356 void flush_sit_entries(struct f2fs_sb_info
*, struct cp_control
*);
1357 int build_segment_manager(struct f2fs_sb_info
*);
1358 void destroy_segment_manager(struct f2fs_sb_info
*);
1359 int __init
create_segment_manager_caches(void);
1360 void destroy_segment_manager_caches(void);
1365 struct page
*grab_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1366 struct page
*get_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1367 struct page
*get_meta_page_ra(struct f2fs_sb_info
*, pgoff_t
);
1368 int ra_meta_pages(struct f2fs_sb_info
*, block_t
, int, int);
1369 long sync_meta_pages(struct f2fs_sb_info
*, enum page_type
, long);
1370 void add_dirty_inode(struct f2fs_sb_info
*, nid_t
, int type
);
1371 void remove_dirty_inode(struct f2fs_sb_info
*, nid_t
, int type
);
1372 void release_dirty_inode(struct f2fs_sb_info
*);
1373 bool exist_written_data(struct f2fs_sb_info
*, nid_t
, int);
1374 int acquire_orphan_inode(struct f2fs_sb_info
*);
1375 void release_orphan_inode(struct f2fs_sb_info
*);
1376 void add_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1377 void remove_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1378 void recover_orphan_inodes(struct f2fs_sb_info
*);
1379 int get_valid_checkpoint(struct f2fs_sb_info
*);
1380 void update_dirty_page(struct inode
*, struct page
*);
1381 void add_dirty_dir_inode(struct inode
*);
1382 void remove_dirty_dir_inode(struct inode
*);
1383 void sync_dirty_dir_inodes(struct f2fs_sb_info
*);
1384 void write_checkpoint(struct f2fs_sb_info
*, struct cp_control
*);
1385 void init_ino_entry_info(struct f2fs_sb_info
*);
1386 int __init
create_checkpoint_caches(void);
1387 void destroy_checkpoint_caches(void);
1392 void f2fs_submit_merged_bio(struct f2fs_sb_info
*, enum page_type
, int);
1393 int f2fs_submit_page_bio(struct f2fs_sb_info
*, struct page
*, block_t
, int);
1394 void f2fs_submit_page_mbio(struct f2fs_sb_info
*, struct page
*, block_t
,
1395 struct f2fs_io_info
*);
1396 int reserve_new_block(struct dnode_of_data
*);
1397 int f2fs_reserve_block(struct dnode_of_data
*, pgoff_t
);
1398 void update_extent_cache(block_t
, struct dnode_of_data
*);
1399 struct page
*find_data_page(struct inode
*, pgoff_t
, bool);
1400 struct page
*get_lock_data_page(struct inode
*, pgoff_t
);
1401 struct page
*get_new_data_page(struct inode
*, struct page
*, pgoff_t
, bool);
1402 int do_write_data_page(struct page
*, struct f2fs_io_info
*);
1403 int f2fs_fiemap(struct inode
*inode
, struct fiemap_extent_info
*, u64
, u64
);
1408 int start_gc_thread(struct f2fs_sb_info
*);
1409 void stop_gc_thread(struct f2fs_sb_info
*);
1410 block_t
start_bidx_of_node(unsigned int, struct f2fs_inode_info
*);
1411 int f2fs_gc(struct f2fs_sb_info
*);
1412 void build_gc_manager(struct f2fs_sb_info
*);
1413 int __init
create_gc_caches(void);
1414 void destroy_gc_caches(void);
1419 int recover_fsync_data(struct f2fs_sb_info
*);
1420 bool space_for_roll_forward(struct f2fs_sb_info
*);
1425 #ifdef CONFIG_F2FS_STAT_FS
1426 struct f2fs_stat_info
{
1427 struct list_head stat_list
;
1428 struct f2fs_sb_info
*sbi
;
1429 int all_area_segs
, sit_area_segs
, nat_area_segs
, ssa_area_segs
;
1430 int main_area_segs
, main_area_sections
, main_area_zones
;
1431 int hit_ext
, total_ext
;
1432 int ndirty_node
, ndirty_dent
, ndirty_dirs
, ndirty_meta
;
1433 int nats
, sits
, fnids
;
1434 int total_count
, utilization
;
1435 int bg_gc
, inline_inode
;
1436 unsigned int valid_count
, valid_node_count
, valid_inode_count
;
1437 unsigned int bimodal
, avg_vblocks
;
1438 int util_free
, util_valid
, util_invalid
;
1439 int rsvd_segs
, overp_segs
;
1440 int dirty_count
, node_pages
, meta_pages
;
1441 int prefree_count
, call_count
, cp_count
;
1442 int tot_segs
, node_segs
, data_segs
, free_segs
, free_secs
;
1443 int tot_blks
, data_blks
, node_blks
;
1444 int curseg
[NR_CURSEG_TYPE
];
1445 int cursec
[NR_CURSEG_TYPE
];
1446 int curzone
[NR_CURSEG_TYPE
];
1448 unsigned int segment_count
[2];
1449 unsigned int block_count
[2];
1450 unsigned base_mem
, cache_mem
;
1453 static inline struct f2fs_stat_info
*F2FS_STAT(struct f2fs_sb_info
*sbi
)
1455 return (struct f2fs_stat_info
*)sbi
->stat_info
;
1458 #define stat_inc_cp_count(si) ((si)->cp_count++)
1459 #define stat_inc_call_count(si) ((si)->call_count++)
1460 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1461 #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1462 #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
1463 #define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++)
1464 #define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++)
1465 #define stat_inc_inline_inode(inode) \
1467 if (f2fs_has_inline_data(inode)) \
1468 ((F2FS_I_SB(inode))->inline_inode++); \
1470 #define stat_dec_inline_inode(inode) \
1472 if (f2fs_has_inline_data(inode)) \
1473 ((F2FS_I_SB(inode))->inline_inode--); \
1476 #define stat_inc_seg_type(sbi, curseg) \
1477 ((sbi)->segment_count[(curseg)->alloc_type]++)
1478 #define stat_inc_block_count(sbi, curseg) \
1479 ((sbi)->block_count[(curseg)->alloc_type]++)
1481 #define stat_inc_seg_count(sbi, type) \
1483 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1485 if (type == SUM_TYPE_DATA) \
1491 #define stat_inc_tot_blk_count(si, blks) \
1492 (si->tot_blks += (blks))
1494 #define stat_inc_data_blk_count(sbi, blks) \
1496 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1497 stat_inc_tot_blk_count(si, blks); \
1498 si->data_blks += (blks); \
1501 #define stat_inc_node_blk_count(sbi, blks) \
1503 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1504 stat_inc_tot_blk_count(si, blks); \
1505 si->node_blks += (blks); \
1508 int f2fs_build_stats(struct f2fs_sb_info
*);
1509 void f2fs_destroy_stats(struct f2fs_sb_info
*);
1510 void __init
f2fs_create_root_stats(void);
1511 void f2fs_destroy_root_stats(void);
1513 #define stat_inc_cp_count(si)
1514 #define stat_inc_call_count(si)
1515 #define stat_inc_bggc_count(si)
1516 #define stat_inc_dirty_dir(sbi)
1517 #define stat_dec_dirty_dir(sbi)
1518 #define stat_inc_total_hit(sb)
1519 #define stat_inc_read_hit(sb)
1520 #define stat_inc_inline_inode(inode)
1521 #define stat_dec_inline_inode(inode)
1522 #define stat_inc_seg_type(sbi, curseg)
1523 #define stat_inc_block_count(sbi, curseg)
1524 #define stat_inc_seg_count(si, type)
1525 #define stat_inc_tot_blk_count(si, blks)
1526 #define stat_inc_data_blk_count(si, blks)
1527 #define stat_inc_node_blk_count(sbi, blks)
1529 static inline int f2fs_build_stats(struct f2fs_sb_info
*sbi
) { return 0; }
1530 static inline void f2fs_destroy_stats(struct f2fs_sb_info
*sbi
) { }
1531 static inline void __init
f2fs_create_root_stats(void) { }
1532 static inline void f2fs_destroy_root_stats(void) { }
1535 extern const struct file_operations f2fs_dir_operations
;
1536 extern const struct file_operations f2fs_file_operations
;
1537 extern const struct inode_operations f2fs_file_inode_operations
;
1538 extern const struct address_space_operations f2fs_dblock_aops
;
1539 extern const struct address_space_operations f2fs_node_aops
;
1540 extern const struct address_space_operations f2fs_meta_aops
;
1541 extern const struct inode_operations f2fs_dir_inode_operations
;
1542 extern const struct inode_operations f2fs_symlink_inode_operations
;
1543 extern const struct inode_operations f2fs_special_inode_operations
;
1548 bool f2fs_may_inline(struct inode
*);
1549 int f2fs_read_inline_data(struct inode
*, struct page
*);
1550 int f2fs_convert_inline_data(struct inode
*, pgoff_t
, struct page
*);
1551 int f2fs_write_inline_data(struct inode
*, struct page
*, unsigned int);
1552 void truncate_inline_data(struct inode
*, u64
);
1553 bool recover_inline_data(struct inode
*, struct page
*);
1554 struct f2fs_dir_entry
*find_in_inline_dir(struct inode
*, struct qstr
*,
1556 struct f2fs_dir_entry
*f2fs_parent_inline_dir(struct inode
*, struct page
**);
1557 int make_empty_inline_dir(struct inode
*inode
, struct inode
*, struct page
*);
1558 int f2fs_add_inline_entry(struct inode
*, const struct qstr
*, struct inode
*);
1559 void f2fs_delete_inline_entry(struct f2fs_dir_entry
*, struct page
*,
1560 struct inode
*, struct inode
*);
1561 bool f2fs_empty_inline_dir(struct inode
*);
1562 int f2fs_read_inline_dir(struct file
*, struct dir_context
*);