4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
14 #include <linux/types.h>
15 #include <linux/page-flags.h>
16 #include <linux/buffer_head.h>
17 #include <linux/slab.h>
18 #include <linux/crc32.h>
19 #include <linux/magic.h>
20 #include <linux/kobject.h>
21 #include <linux/sched.h>
23 #ifdef CONFIG_F2FS_CHECK_FS
24 #define f2fs_bug_on(sbi, condition) BUG_ON(condition)
25 #define f2fs_down_write(x, y) down_write_nest_lock(x, y)
27 #define f2fs_bug_on(sbi, condition) \
29 if (unlikely(condition)) { \
31 sbi->need_fsck = true; \
34 #define f2fs_down_write(x, y) down_write(x)
40 #define F2FS_MOUNT_BG_GC 0x00000001
41 #define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
42 #define F2FS_MOUNT_DISCARD 0x00000004
43 #define F2FS_MOUNT_NOHEAP 0x00000008
44 #define F2FS_MOUNT_XATTR_USER 0x00000010
45 #define F2FS_MOUNT_POSIX_ACL 0x00000020
46 #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
47 #define F2FS_MOUNT_INLINE_XATTR 0x00000080
48 #define F2FS_MOUNT_INLINE_DATA 0x00000100
49 #define F2FS_MOUNT_FLUSH_MERGE 0x00000200
50 #define F2FS_MOUNT_NOBARRIER 0x00000400
52 #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
53 #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
54 #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
56 #define ver_after(a, b) (typecheck(unsigned long long, a) && \
57 typecheck(unsigned long long, b) && \
58 ((long long)((a) - (b)) > 0))
60 typedef u32 block_t
; /*
61 * should not change u32, since it is the on-disk block
62 * address format, __le32.
66 struct f2fs_mount_info
{
70 #define CRCPOLY_LE 0xedb88320
72 static inline __u32
f2fs_crc32(void *buf
, size_t len
)
74 unsigned char *p
= (unsigned char *)buf
;
75 __u32 crc
= F2FS_SUPER_MAGIC
;
80 for (i
= 0; i
< 8; i
++)
81 crc
= (crc
>> 1) ^ ((crc
& 1) ? CRCPOLY_LE
: 0);
86 static inline bool f2fs_crc_valid(__u32 blk_crc
, void *buf
, size_t buf_size
)
88 return f2fs_crc32(buf
, buf_size
) == blk_crc
;
92 * For checkpoint manager
100 * For CP/NAT/SIT/SSA readahead
109 /* for the list of ino */
111 ORPHAN_INO
, /* for orphan ino list */
112 APPEND_INO
, /* for append ino list */
113 UPDATE_INO
, /* for update ino list */
114 MAX_INO_ENTRY
, /* max. list */
118 struct list_head list
; /* list head */
119 nid_t ino
; /* inode number */
122 /* for the list of directory inodes */
123 struct dir_inode_entry
{
124 struct list_head list
; /* list head */
125 struct inode
*inode
; /* vfs inode pointer */
128 /* for the list of blockaddresses to be discarded */
129 struct discard_entry
{
130 struct list_head list
; /* list head */
131 block_t blkaddr
; /* block address to be discarded */
132 int len
; /* # of consecutive blocks of the discard */
135 /* for the list of fsync inodes, used only during recovery */
136 struct fsync_inode_entry
{
137 struct list_head list
; /* list head */
138 struct inode
*inode
; /* vfs inode pointer */
139 block_t blkaddr
; /* block address locating the last inode */
142 #define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
143 #define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
145 #define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
146 #define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
147 #define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
148 #define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
150 static inline int update_nats_in_cursum(struct f2fs_summary_block
*rs
, int i
)
152 int before
= nats_in_cursum(rs
);
153 rs
->n_nats
= cpu_to_le16(before
+ i
);
157 static inline int update_sits_in_cursum(struct f2fs_summary_block
*rs
, int i
)
159 int before
= sits_in_cursum(rs
);
160 rs
->n_sits
= cpu_to_le16(before
+ i
);
164 static inline bool __has_cursum_space(struct f2fs_summary_block
*sum
, int size
,
167 if (type
== NAT_JOURNAL
)
168 return nats_in_cursum(sum
) + size
<= NAT_JOURNAL_ENTRIES
;
170 return sits_in_cursum(sum
) + size
<= SIT_JOURNAL_ENTRIES
;
176 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
177 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
179 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
181 * ioctl commands in 32 bit emulation
183 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
184 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
188 * For INODE and NODE manager
191 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
192 * as its node offset to distinguish from index node blocks.
193 * But some bits are used to mark the node block.
195 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
198 ALLOC_NODE
, /* allocate a new node page if needed */
199 LOOKUP_NODE
, /* look up a node without readahead */
201 * look up a node with readahead called
206 #define F2FS_LINK_MAX 32000 /* maximum link count per file */
208 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
210 /* for in-memory extent cache entry */
211 #define F2FS_MIN_EXTENT_LEN 16 /* minimum extent length */
214 rwlock_t ext_lock
; /* rwlock for consistency */
215 unsigned int fofs
; /* start offset in a file */
216 u32 blk_addr
; /* start block address of the extent */
217 unsigned int len
; /* length of the extent */
221 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
223 #define FADVISE_COLD_BIT 0x01
224 #define FADVISE_LOST_PINO_BIT 0x02
226 #define DEF_DIR_LEVEL 0
228 struct f2fs_inode_info
{
229 struct inode vfs_inode
; /* serve a vfs inode */
230 unsigned long i_flags
; /* keep an inode flags for ioctl */
231 unsigned char i_advise
; /* use to give file attribute hints */
232 unsigned char i_dir_level
; /* use for dentry level for large dir */
233 unsigned int i_current_depth
; /* use only in directory structure */
234 unsigned int i_pino
; /* parent inode number */
235 umode_t i_acl_mode
; /* keep file acl mode temporarily */
237 /* Use below internally in f2fs*/
238 unsigned long flags
; /* use to pass per-file flags */
239 struct rw_semaphore i_sem
; /* protect fi info */
240 atomic_t dirty_dents
; /* # of dirty dentry pages */
241 f2fs_hash_t chash
; /* hash value of given file name */
242 unsigned int clevel
; /* maximum level of given file name */
243 nid_t i_xattr_nid
; /* node id that contains xattrs */
244 unsigned long long xattr_ver
; /* cp version of xattr modification */
245 struct extent_info ext
; /* in-memory extent cache entry */
246 struct dir_inode_entry
*dirty_dir
; /* the pointer of dirty dir */
249 static inline void get_extent_info(struct extent_info
*ext
,
250 struct f2fs_extent i_ext
)
252 write_lock(&ext
->ext_lock
);
253 ext
->fofs
= le32_to_cpu(i_ext
.fofs
);
254 ext
->blk_addr
= le32_to_cpu(i_ext
.blk_addr
);
255 ext
->len
= le32_to_cpu(i_ext
.len
);
256 write_unlock(&ext
->ext_lock
);
259 static inline void set_raw_extent(struct extent_info
*ext
,
260 struct f2fs_extent
*i_ext
)
262 read_lock(&ext
->ext_lock
);
263 i_ext
->fofs
= cpu_to_le32(ext
->fofs
);
264 i_ext
->blk_addr
= cpu_to_le32(ext
->blk_addr
);
265 i_ext
->len
= cpu_to_le32(ext
->len
);
266 read_unlock(&ext
->ext_lock
);
269 struct f2fs_nm_info
{
270 block_t nat_blkaddr
; /* base disk address of NAT */
271 nid_t max_nid
; /* maximum possible node ids */
272 nid_t available_nids
; /* maximum available node ids */
273 nid_t next_scan_nid
; /* the next nid to be scanned */
274 unsigned int ram_thresh
; /* control the memory footprint */
276 /* NAT cache management */
277 struct radix_tree_root nat_root
;/* root of the nat entry cache */
278 rwlock_t nat_tree_lock
; /* protect nat_tree_lock */
279 unsigned int nat_cnt
; /* the # of cached nat entries */
280 struct list_head nat_entries
; /* cached nat entry list (clean) */
281 struct list_head dirty_nat_entries
; /* cached nat entry list (dirty) */
282 struct list_head nat_entry_set
; /* nat entry set list */
283 unsigned int dirty_nat_cnt
; /* total num of nat entries in set */
285 /* free node ids management */
286 struct radix_tree_root free_nid_root
;/* root of the free_nid cache */
287 struct list_head free_nid_list
; /* a list for free nids */
288 spinlock_t free_nid_list_lock
; /* protect free nid list */
289 unsigned int fcnt
; /* the number of free node id */
290 struct mutex build_lock
; /* lock for build free nids */
293 char *nat_bitmap
; /* NAT bitmap pointer */
294 int bitmap_size
; /* bitmap size */
298 * this structure is used as one of function parameters.
299 * all the information are dedicated to a given direct node block determined
300 * by the data offset in a file.
302 struct dnode_of_data
{
303 struct inode
*inode
; /* vfs inode pointer */
304 struct page
*inode_page
; /* its inode page, NULL is possible */
305 struct page
*node_page
; /* cached direct node page */
306 nid_t nid
; /* node id of the direct node block */
307 unsigned int ofs_in_node
; /* data offset in the node page */
308 bool inode_page_locked
; /* inode page is locked or not */
309 block_t data_blkaddr
; /* block address of the node block */
312 static inline void set_new_dnode(struct dnode_of_data
*dn
, struct inode
*inode
,
313 struct page
*ipage
, struct page
*npage
, nid_t nid
)
315 memset(dn
, 0, sizeof(*dn
));
317 dn
->inode_page
= ipage
;
318 dn
->node_page
= npage
;
325 * By default, there are 6 active log areas across the whole main area.
326 * When considering hot and cold data separation to reduce cleaning overhead,
327 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
329 * In the current design, you should not change the numbers intentionally.
330 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
331 * logs individually according to the underlying devices. (default: 6)
332 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
333 * data and 8 for node logs.
335 #define NR_CURSEG_DATA_TYPE (3)
336 #define NR_CURSEG_NODE_TYPE (3)
337 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
340 CURSEG_HOT_DATA
= 0, /* directory entry blocks */
341 CURSEG_WARM_DATA
, /* data blocks */
342 CURSEG_COLD_DATA
, /* multimedia or GCed data blocks */
343 CURSEG_HOT_NODE
, /* direct node blocks of directory files */
344 CURSEG_WARM_NODE
, /* direct node blocks of normal files */
345 CURSEG_COLD_NODE
, /* indirect node blocks */
350 struct completion wait
;
351 struct llist_node llnode
;
355 struct flush_cmd_control
{
356 struct task_struct
*f2fs_issue_flush
; /* flush thread */
357 wait_queue_head_t flush_wait_queue
; /* waiting queue for wake-up */
358 struct llist_head issue_list
; /* list for command issue */
359 struct llist_node
*dispatch_list
; /* list for command dispatch */
362 struct f2fs_sm_info
{
363 struct sit_info
*sit_info
; /* whole segment information */
364 struct free_segmap_info
*free_info
; /* free segment information */
365 struct dirty_seglist_info
*dirty_info
; /* dirty segment information */
366 struct curseg_info
*curseg_array
; /* active segment information */
368 block_t seg0_blkaddr
; /* block address of 0'th segment */
369 block_t main_blkaddr
; /* start block address of main area */
370 block_t ssa_blkaddr
; /* start block address of SSA area */
372 unsigned int segment_count
; /* total # of segments */
373 unsigned int main_segments
; /* # of segments in main area */
374 unsigned int reserved_segments
; /* # of reserved segments */
375 unsigned int ovp_segments
; /* # of overprovision segments */
377 /* a threshold to reclaim prefree segments */
378 unsigned int rec_prefree_segments
;
380 /* for small discard management */
381 struct list_head discard_list
; /* 4KB discard list */
382 int nr_discards
; /* # of discards in the list */
383 int max_discards
; /* max. discards to be issued */
385 struct list_head sit_entry_set
; /* sit entry set list */
387 unsigned int ipu_policy
; /* in-place-update policy */
388 unsigned int min_ipu_util
; /* in-place-update threshold */
390 /* for flush command control */
391 struct flush_cmd_control
*cmd_control_info
;
399 * COUNT_TYPE for monitoring
401 * f2fs monitors the number of several block types such as on-writeback,
402 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
413 * The below are the page types of bios used in submit_bio().
414 * The available types are:
415 * DATA User data pages. It operates as async mode.
416 * NODE Node pages. It operates as async mode.
417 * META FS metadata pages such as SIT, NAT, CP.
418 * NR_PAGE_TYPE The number of page types.
419 * META_FLUSH Make sure the previous pages are written
420 * with waiting the bio's completion
421 * ... Only can be used with META.
423 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
432 struct f2fs_io_info
{
433 enum page_type type
; /* contains DATA/NODE/META/META_FLUSH */
434 int rw
; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
437 #define is_read_io(rw) (((rw) & 1) == READ)
438 struct f2fs_bio_info
{
439 struct f2fs_sb_info
*sbi
; /* f2fs superblock */
440 struct bio
*bio
; /* bios to merge */
441 sector_t last_block_in_bio
; /* last block number */
442 struct f2fs_io_info fio
; /* store buffered io info. */
443 struct rw_semaphore io_rwsem
; /* blocking op for bio */
446 struct f2fs_sb_info
{
447 struct super_block
*sb
; /* pointer to VFS super block */
448 struct proc_dir_entry
*s_proc
; /* proc entry */
449 struct buffer_head
*raw_super_buf
; /* buffer head of raw sb */
450 struct f2fs_super_block
*raw_super
; /* raw super block pointer */
451 int s_dirty
; /* dirty flag for checkpoint */
452 bool need_fsck
; /* need fsck.f2fs to fix */
454 /* for node-related operations */
455 struct f2fs_nm_info
*nm_info
; /* node manager */
456 struct inode
*node_inode
; /* cache node blocks */
458 /* for segment-related operations */
459 struct f2fs_sm_info
*sm_info
; /* segment manager */
461 /* for bio operations */
462 struct f2fs_bio_info read_io
; /* for read bios */
463 struct f2fs_bio_info write_io
[NR_PAGE_TYPE
]; /* for write bios */
464 struct completion
*wait_io
; /* for completion bios */
467 struct f2fs_checkpoint
*ckpt
; /* raw checkpoint pointer */
468 struct inode
*meta_inode
; /* cache meta blocks */
469 struct mutex cp_mutex
; /* checkpoint procedure lock */
470 struct rw_semaphore cp_rwsem
; /* blocking FS operations */
471 struct rw_semaphore node_write
; /* locking node writes */
472 struct mutex writepages
; /* mutex for writepages() */
473 bool por_doing
; /* recovery is doing or not */
474 wait_queue_head_t cp_wait
;
476 /* for inode management */
477 struct radix_tree_root ino_root
[MAX_INO_ENTRY
]; /* ino entry array */
478 spinlock_t ino_lock
[MAX_INO_ENTRY
]; /* for ino entry lock */
479 struct list_head ino_list
[MAX_INO_ENTRY
]; /* inode list head */
481 /* for orphan inode, use 0'th array */
482 unsigned int n_orphans
; /* # of orphan inodes */
483 unsigned int max_orphans
; /* max orphan inodes */
485 /* for directory inode management */
486 struct list_head dir_inode_list
; /* dir inode list */
487 spinlock_t dir_inode_lock
; /* for dir inode list lock */
489 /* basic filesystem units */
490 unsigned int log_sectors_per_block
; /* log2 sectors per block */
491 unsigned int log_blocksize
; /* log2 block size */
492 unsigned int blocksize
; /* block size */
493 unsigned int root_ino_num
; /* root inode number*/
494 unsigned int node_ino_num
; /* node inode number*/
495 unsigned int meta_ino_num
; /* meta inode number*/
496 unsigned int log_blocks_per_seg
; /* log2 blocks per segment */
497 unsigned int blocks_per_seg
; /* blocks per segment */
498 unsigned int segs_per_sec
; /* segments per section */
499 unsigned int secs_per_zone
; /* sections per zone */
500 unsigned int total_sections
; /* total section count */
501 unsigned int total_node_count
; /* total node block count */
502 unsigned int total_valid_node_count
; /* valid node block count */
503 unsigned int total_valid_inode_count
; /* valid inode count */
504 int active_logs
; /* # of active logs */
505 int dir_level
; /* directory level */
507 block_t user_block_count
; /* # of user blocks */
508 block_t total_valid_block_count
; /* # of valid blocks */
509 block_t alloc_valid_block_count
; /* # of allocated blocks */
510 block_t last_valid_block_count
; /* for recovery */
511 u32 s_next_generation
; /* for NFS support */
512 atomic_t nr_pages
[NR_COUNT_TYPE
]; /* # of pages, see count_type */
514 struct f2fs_mount_info mount_opt
; /* mount options */
516 /* for cleaning operations */
517 struct mutex gc_mutex
; /* mutex for GC */
518 struct f2fs_gc_kthread
*gc_thread
; /* GC thread */
519 unsigned int cur_victim_sec
; /* current victim section num */
521 /* maximum # of trials to find a victim segment for SSR and GC */
522 unsigned int max_victim_search
;
525 * for stat information.
526 * one is for the LFS mode, and the other is for the SSR mode.
528 #ifdef CONFIG_F2FS_STAT_FS
529 struct f2fs_stat_info
*stat_info
; /* FS status information */
530 unsigned int segment_count
[2]; /* # of allocated segments */
531 unsigned int block_count
[2]; /* # of allocated blocks */
532 int total_hit_ext
, read_hit_ext
; /* extent cache hit ratio */
533 int inline_inode
; /* # of inline_data inodes */
534 int bg_gc
; /* background gc calls */
535 unsigned int n_dirty_dirs
; /* # of dir inodes */
537 unsigned int last_victim
[2]; /* last victim segment # */
538 spinlock_t stat_lock
; /* lock for stat operations */
540 /* For sysfs suppport */
541 struct kobject s_kobj
;
542 struct completion s_kobj_unregister
;
548 static inline struct f2fs_inode_info
*F2FS_I(struct inode
*inode
)
550 return container_of(inode
, struct f2fs_inode_info
, vfs_inode
);
553 static inline struct f2fs_sb_info
*F2FS_SB(struct super_block
*sb
)
555 return sb
->s_fs_info
;
558 static inline struct f2fs_sb_info
*F2FS_I_SB(struct inode
*inode
)
560 return F2FS_SB(inode
->i_sb
);
563 static inline struct f2fs_sb_info
*F2FS_M_SB(struct address_space
*mapping
)
565 return F2FS_I_SB(mapping
->host
);
568 static inline struct f2fs_sb_info
*F2FS_P_SB(struct page
*page
)
570 return F2FS_M_SB(page
->mapping
);
573 static inline struct f2fs_super_block
*F2FS_RAW_SUPER(struct f2fs_sb_info
*sbi
)
575 return (struct f2fs_super_block
*)(sbi
->raw_super
);
578 static inline struct f2fs_checkpoint
*F2FS_CKPT(struct f2fs_sb_info
*sbi
)
580 return (struct f2fs_checkpoint
*)(sbi
->ckpt
);
583 static inline struct f2fs_node
*F2FS_NODE(struct page
*page
)
585 return (struct f2fs_node
*)page_address(page
);
588 static inline struct f2fs_inode
*F2FS_INODE(struct page
*page
)
590 return &((struct f2fs_node
*)page_address(page
))->i
;
593 static inline struct f2fs_nm_info
*NM_I(struct f2fs_sb_info
*sbi
)
595 return (struct f2fs_nm_info
*)(sbi
->nm_info
);
598 static inline struct f2fs_sm_info
*SM_I(struct f2fs_sb_info
*sbi
)
600 return (struct f2fs_sm_info
*)(sbi
->sm_info
);
603 static inline struct sit_info
*SIT_I(struct f2fs_sb_info
*sbi
)
605 return (struct sit_info
*)(SM_I(sbi
)->sit_info
);
608 static inline struct free_segmap_info
*FREE_I(struct f2fs_sb_info
*sbi
)
610 return (struct free_segmap_info
*)(SM_I(sbi
)->free_info
);
613 static inline struct dirty_seglist_info
*DIRTY_I(struct f2fs_sb_info
*sbi
)
615 return (struct dirty_seglist_info
*)(SM_I(sbi
)->dirty_info
);
618 static inline struct address_space
*META_MAPPING(struct f2fs_sb_info
*sbi
)
620 return sbi
->meta_inode
->i_mapping
;
623 static inline struct address_space
*NODE_MAPPING(struct f2fs_sb_info
*sbi
)
625 return sbi
->node_inode
->i_mapping
;
628 static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info
*sbi
)
633 static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info
*sbi
)
638 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint
*cp
)
640 return le64_to_cpu(cp
->checkpoint_ver
);
643 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
645 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
646 return ckpt_flags
& f
;
649 static inline void set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
651 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
653 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
656 static inline void clear_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
658 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
660 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
663 static inline void f2fs_lock_op(struct f2fs_sb_info
*sbi
)
665 down_read(&sbi
->cp_rwsem
);
668 static inline void f2fs_unlock_op(struct f2fs_sb_info
*sbi
)
670 up_read(&sbi
->cp_rwsem
);
673 static inline void f2fs_lock_all(struct f2fs_sb_info
*sbi
)
675 f2fs_down_write(&sbi
->cp_rwsem
, &sbi
->cp_mutex
);
678 static inline void f2fs_unlock_all(struct f2fs_sb_info
*sbi
)
680 up_write(&sbi
->cp_rwsem
);
684 * Check whether the given nid is within node id range.
686 static inline int check_nid_range(struct f2fs_sb_info
*sbi
, nid_t nid
)
688 if (unlikely(nid
< F2FS_ROOT_INO(sbi
)))
690 if (unlikely(nid
>= NM_I(sbi
)->max_nid
))
695 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
698 * Check whether the inode has blocks or not
700 static inline int F2FS_HAS_BLOCKS(struct inode
*inode
)
702 if (F2FS_I(inode
)->i_xattr_nid
)
703 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
+ 1;
705 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
;
708 static inline bool f2fs_has_xattr_block(unsigned int ofs
)
710 return ofs
== XATTR_NODE_OFFSET
;
713 static inline bool inc_valid_block_count(struct f2fs_sb_info
*sbi
,
714 struct inode
*inode
, blkcnt_t count
)
716 block_t valid_block_count
;
718 spin_lock(&sbi
->stat_lock
);
720 sbi
->total_valid_block_count
+ (block_t
)count
;
721 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
722 spin_unlock(&sbi
->stat_lock
);
725 inode
->i_blocks
+= count
;
726 sbi
->total_valid_block_count
= valid_block_count
;
727 sbi
->alloc_valid_block_count
+= (block_t
)count
;
728 spin_unlock(&sbi
->stat_lock
);
732 static inline void dec_valid_block_count(struct f2fs_sb_info
*sbi
,
736 spin_lock(&sbi
->stat_lock
);
737 f2fs_bug_on(sbi
, sbi
->total_valid_block_count
< (block_t
) count
);
738 f2fs_bug_on(sbi
, inode
->i_blocks
< count
);
739 inode
->i_blocks
-= count
;
740 sbi
->total_valid_block_count
-= (block_t
)count
;
741 spin_unlock(&sbi
->stat_lock
);
744 static inline void inc_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
746 atomic_inc(&sbi
->nr_pages
[count_type
]);
747 F2FS_SET_SB_DIRT(sbi
);
750 static inline void inode_inc_dirty_dents(struct inode
*inode
)
752 inc_page_count(F2FS_I_SB(inode
), F2FS_DIRTY_DENTS
);
753 atomic_inc(&F2FS_I(inode
)->dirty_dents
);
756 static inline void dec_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
758 atomic_dec(&sbi
->nr_pages
[count_type
]);
761 static inline void inode_dec_dirty_dents(struct inode
*inode
)
763 if (!S_ISDIR(inode
->i_mode
))
766 dec_page_count(F2FS_I_SB(inode
), F2FS_DIRTY_DENTS
);
767 atomic_dec(&F2FS_I(inode
)->dirty_dents
);
770 static inline int get_pages(struct f2fs_sb_info
*sbi
, int count_type
)
772 return atomic_read(&sbi
->nr_pages
[count_type
]);
775 static inline int get_dirty_dents(struct inode
*inode
)
777 return atomic_read(&F2FS_I(inode
)->dirty_dents
);
780 static inline int get_blocktype_secs(struct f2fs_sb_info
*sbi
, int block_type
)
782 unsigned int pages_per_sec
= sbi
->segs_per_sec
*
783 (1 << sbi
->log_blocks_per_seg
);
784 return ((get_pages(sbi
, block_type
) + pages_per_sec
- 1)
785 >> sbi
->log_blocks_per_seg
) / sbi
->segs_per_sec
;
788 static inline block_t
valid_user_blocks(struct f2fs_sb_info
*sbi
)
790 return sbi
->total_valid_block_count
;
793 static inline unsigned long __bitmap_size(struct f2fs_sb_info
*sbi
, int flag
)
795 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
797 /* return NAT or SIT bitmap */
798 if (flag
== NAT_BITMAP
)
799 return le32_to_cpu(ckpt
->nat_ver_bitmap_bytesize
);
800 else if (flag
== SIT_BITMAP
)
801 return le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
);
806 static inline void *__bitmap_ptr(struct f2fs_sb_info
*sbi
, int flag
)
808 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
811 if (le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_payload
) > 0) {
812 if (flag
== NAT_BITMAP
)
813 return &ckpt
->sit_nat_version_bitmap
;
815 return (unsigned char *)ckpt
+ F2FS_BLKSIZE
;
817 offset
= (flag
== NAT_BITMAP
) ?
818 le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
) : 0;
819 return &ckpt
->sit_nat_version_bitmap
+ offset
;
823 static inline block_t
__start_cp_addr(struct f2fs_sb_info
*sbi
)
826 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
827 unsigned long long ckpt_version
= cur_cp_version(ckpt
);
829 start_addr
= le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_blkaddr
);
832 * odd numbered checkpoint should at cp segment 0
833 * and even segment must be at cp segment 1
835 if (!(ckpt_version
& 1))
836 start_addr
+= sbi
->blocks_per_seg
;
841 static inline block_t
__start_sum_addr(struct f2fs_sb_info
*sbi
)
843 return le32_to_cpu(F2FS_CKPT(sbi
)->cp_pack_start_sum
);
846 static inline bool inc_valid_node_count(struct f2fs_sb_info
*sbi
,
849 block_t valid_block_count
;
850 unsigned int valid_node_count
;
852 spin_lock(&sbi
->stat_lock
);
854 valid_block_count
= sbi
->total_valid_block_count
+ 1;
855 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
856 spin_unlock(&sbi
->stat_lock
);
860 valid_node_count
= sbi
->total_valid_node_count
+ 1;
861 if (unlikely(valid_node_count
> sbi
->total_node_count
)) {
862 spin_unlock(&sbi
->stat_lock
);
869 sbi
->alloc_valid_block_count
++;
870 sbi
->total_valid_node_count
++;
871 sbi
->total_valid_block_count
++;
872 spin_unlock(&sbi
->stat_lock
);
877 static inline void dec_valid_node_count(struct f2fs_sb_info
*sbi
,
880 spin_lock(&sbi
->stat_lock
);
882 f2fs_bug_on(sbi
, !sbi
->total_valid_block_count
);
883 f2fs_bug_on(sbi
, !sbi
->total_valid_node_count
);
884 f2fs_bug_on(sbi
, !inode
->i_blocks
);
887 sbi
->total_valid_node_count
--;
888 sbi
->total_valid_block_count
--;
890 spin_unlock(&sbi
->stat_lock
);
893 static inline unsigned int valid_node_count(struct f2fs_sb_info
*sbi
)
895 return sbi
->total_valid_node_count
;
898 static inline void inc_valid_inode_count(struct f2fs_sb_info
*sbi
)
900 spin_lock(&sbi
->stat_lock
);
901 f2fs_bug_on(sbi
, sbi
->total_valid_inode_count
== sbi
->total_node_count
);
902 sbi
->total_valid_inode_count
++;
903 spin_unlock(&sbi
->stat_lock
);
906 static inline void dec_valid_inode_count(struct f2fs_sb_info
*sbi
)
908 spin_lock(&sbi
->stat_lock
);
909 f2fs_bug_on(sbi
, !sbi
->total_valid_inode_count
);
910 sbi
->total_valid_inode_count
--;
911 spin_unlock(&sbi
->stat_lock
);
914 static inline unsigned int valid_inode_count(struct f2fs_sb_info
*sbi
)
916 return sbi
->total_valid_inode_count
;
919 static inline void f2fs_put_page(struct page
*page
, int unlock
)
925 f2fs_bug_on(F2FS_P_SB(page
), !PageLocked(page
));
928 page_cache_release(page
);
931 static inline void f2fs_put_dnode(struct dnode_of_data
*dn
)
934 f2fs_put_page(dn
->node_page
, 1);
935 if (dn
->inode_page
&& dn
->node_page
!= dn
->inode_page
)
936 f2fs_put_page(dn
->inode_page
, 0);
937 dn
->node_page
= NULL
;
938 dn
->inode_page
= NULL
;
941 static inline struct kmem_cache
*f2fs_kmem_cache_create(const char *name
,
944 return kmem_cache_create(name
, size
, 0, SLAB_RECLAIM_ACCOUNT
, NULL
);
947 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache
*cachep
,
952 entry
= kmem_cache_alloc(cachep
, flags
);
961 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
963 static inline bool IS_INODE(struct page
*page
)
965 struct f2fs_node
*p
= F2FS_NODE(page
);
966 return RAW_IS_INODE(p
);
969 static inline __le32
*blkaddr_in_node(struct f2fs_node
*node
)
971 return RAW_IS_INODE(node
) ? node
->i
.i_addr
: node
->dn
.addr
;
974 static inline block_t
datablock_addr(struct page
*node_page
,
977 struct f2fs_node
*raw_node
;
979 raw_node
= F2FS_NODE(node_page
);
980 addr_array
= blkaddr_in_node(raw_node
);
981 return le32_to_cpu(addr_array
[offset
]);
984 static inline int f2fs_test_bit(unsigned int nr
, char *addr
)
989 mask
= 1 << (7 - (nr
& 0x07));
993 static inline int f2fs_set_bit(unsigned int nr
, char *addr
)
999 mask
= 1 << (7 - (nr
& 0x07));
1005 static inline int f2fs_clear_bit(unsigned int nr
, char *addr
)
1011 mask
= 1 << (7 - (nr
& 0x07));
1017 /* used for f2fs_inode_info->flags */
1019 FI_NEW_INODE
, /* indicate newly allocated inode */
1020 FI_DIRTY_INODE
, /* indicate inode is dirty or not */
1021 FI_DIRTY_DIR
, /* indicate directory has dirty pages */
1022 FI_INC_LINK
, /* need to increment i_nlink */
1023 FI_ACL_MODE
, /* indicate acl mode */
1024 FI_NO_ALLOC
, /* should not allocate any blocks */
1025 FI_UPDATE_DIR
, /* should update inode block for consistency */
1026 FI_DELAY_IPUT
, /* used for the recovery */
1027 FI_NO_EXTENT
, /* not to use the extent cache */
1028 FI_INLINE_XATTR
, /* used for inline xattr */
1029 FI_INLINE_DATA
, /* used for inline data*/
1030 FI_APPEND_WRITE
, /* inode has appended data */
1031 FI_UPDATE_WRITE
, /* inode has in-place-update data */
1032 FI_NEED_IPU
, /* used fo ipu for fdatasync */
1035 static inline void set_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1037 if (!test_bit(flag
, &fi
->flags
))
1038 set_bit(flag
, &fi
->flags
);
1041 static inline int is_inode_flag_set(struct f2fs_inode_info
*fi
, int flag
)
1043 return test_bit(flag
, &fi
->flags
);
1046 static inline void clear_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1048 if (test_bit(flag
, &fi
->flags
))
1049 clear_bit(flag
, &fi
->flags
);
1052 static inline void set_acl_inode(struct f2fs_inode_info
*fi
, umode_t mode
)
1054 fi
->i_acl_mode
= mode
;
1055 set_inode_flag(fi
, FI_ACL_MODE
);
1058 static inline int cond_clear_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1060 if (is_inode_flag_set(fi
, FI_ACL_MODE
)) {
1061 clear_inode_flag(fi
, FI_ACL_MODE
);
1067 static inline void get_inline_info(struct f2fs_inode_info
*fi
,
1068 struct f2fs_inode
*ri
)
1070 if (ri
->i_inline
& F2FS_INLINE_XATTR
)
1071 set_inode_flag(fi
, FI_INLINE_XATTR
);
1072 if (ri
->i_inline
& F2FS_INLINE_DATA
)
1073 set_inode_flag(fi
, FI_INLINE_DATA
);
1076 static inline void set_raw_inline(struct f2fs_inode_info
*fi
,
1077 struct f2fs_inode
*ri
)
1081 if (is_inode_flag_set(fi
, FI_INLINE_XATTR
))
1082 ri
->i_inline
|= F2FS_INLINE_XATTR
;
1083 if (is_inode_flag_set(fi
, FI_INLINE_DATA
))
1084 ri
->i_inline
|= F2FS_INLINE_DATA
;
1087 static inline int f2fs_has_inline_xattr(struct inode
*inode
)
1089 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_XATTR
);
1092 static inline unsigned int addrs_per_inode(struct f2fs_inode_info
*fi
)
1094 if (f2fs_has_inline_xattr(&fi
->vfs_inode
))
1095 return DEF_ADDRS_PER_INODE
- F2FS_INLINE_XATTR_ADDRS
;
1096 return DEF_ADDRS_PER_INODE
;
1099 static inline void *inline_xattr_addr(struct page
*page
)
1101 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1102 return (void *)&(ri
->i_addr
[DEF_ADDRS_PER_INODE
-
1103 F2FS_INLINE_XATTR_ADDRS
]);
1106 static inline int inline_xattr_size(struct inode
*inode
)
1108 if (f2fs_has_inline_xattr(inode
))
1109 return F2FS_INLINE_XATTR_ADDRS
<< 2;
1114 static inline int f2fs_has_inline_data(struct inode
*inode
)
1116 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DATA
);
1119 static inline void *inline_data_addr(struct page
*page
)
1121 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1122 return (void *)&(ri
->i_addr
[1]);
1125 static inline int f2fs_readonly(struct super_block
*sb
)
1127 return sb
->s_flags
& MS_RDONLY
;
1130 static inline bool f2fs_cp_error(struct f2fs_sb_info
*sbi
)
1132 return is_set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1135 static inline void f2fs_stop_checkpoint(struct f2fs_sb_info
*sbi
)
1137 set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1138 sbi
->sb
->s_flags
|= MS_RDONLY
;
1141 #define get_inode_mode(i) \
1142 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1143 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1145 /* get offset of first page in next direct node */
1146 #define PGOFS_OF_NEXT_DNODE(pgofs, fi) \
1147 ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \
1148 (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \
1149 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi))
1154 int f2fs_sync_file(struct file
*, loff_t
, loff_t
, int);
1155 void truncate_data_blocks(struct dnode_of_data
*);
1156 int truncate_blocks(struct inode
*, u64
, bool);
1157 void f2fs_truncate(struct inode
*);
1158 int f2fs_getattr(struct vfsmount
*, struct dentry
*, struct kstat
*);
1159 int f2fs_setattr(struct dentry
*, struct iattr
*);
1160 int truncate_hole(struct inode
*, pgoff_t
, pgoff_t
);
1161 int truncate_data_blocks_range(struct dnode_of_data
*, int);
1162 long f2fs_ioctl(struct file
*, unsigned int, unsigned long);
1163 long f2fs_compat_ioctl(struct file
*, unsigned int, unsigned long);
1168 void f2fs_set_inode_flags(struct inode
*);
1169 struct inode
*f2fs_iget(struct super_block
*, unsigned long);
1170 int try_to_free_nats(struct f2fs_sb_info
*, int);
1171 void update_inode(struct inode
*, struct page
*);
1172 void update_inode_page(struct inode
*);
1173 int f2fs_write_inode(struct inode
*, struct writeback_control
*);
1174 void f2fs_evict_inode(struct inode
*);
1179 struct dentry
*f2fs_get_parent(struct dentry
*child
);
1184 struct f2fs_dir_entry
*f2fs_find_entry(struct inode
*, struct qstr
*,
1186 struct f2fs_dir_entry
*f2fs_parent_dir(struct inode
*, struct page
**);
1187 ino_t
f2fs_inode_by_name(struct inode
*, struct qstr
*);
1188 void f2fs_set_link(struct inode
*, struct f2fs_dir_entry
*,
1189 struct page
*, struct inode
*);
1190 int update_dent_inode(struct inode
*, const struct qstr
*);
1191 int __f2fs_add_link(struct inode
*, const struct qstr
*, struct inode
*);
1192 void f2fs_delete_entry(struct f2fs_dir_entry
*, struct page
*, struct inode
*);
1193 int f2fs_do_tmpfile(struct inode
*, struct inode
*);
1194 int f2fs_make_empty(struct inode
*, struct inode
*);
1195 bool f2fs_empty_dir(struct inode
*);
1197 static inline int f2fs_add_link(struct dentry
*dentry
, struct inode
*inode
)
1199 return __f2fs_add_link(dentry
->d_parent
->d_inode
, &dentry
->d_name
,
1206 int f2fs_sync_fs(struct super_block
*, int);
1207 extern __printf(3, 4)
1208 void f2fs_msg(struct super_block
*, const char *, const char *, ...);
1213 f2fs_hash_t
f2fs_dentry_hash(const struct qstr
*);
1218 struct dnode_of_data
;
1221 bool available_free_memory(struct f2fs_sb_info
*, int);
1222 int is_checkpointed_node(struct f2fs_sb_info
*, nid_t
);
1223 bool fsync_mark_done(struct f2fs_sb_info
*, nid_t
);
1224 void fsync_mark_clear(struct f2fs_sb_info
*, nid_t
);
1225 void get_node_info(struct f2fs_sb_info
*, nid_t
, struct node_info
*);
1226 int get_dnode_of_data(struct dnode_of_data
*, pgoff_t
, int);
1227 int truncate_inode_blocks(struct inode
*, pgoff_t
);
1228 int truncate_xattr_node(struct inode
*, struct page
*);
1229 int wait_on_node_pages_writeback(struct f2fs_sb_info
*, nid_t
);
1230 void remove_inode_page(struct inode
*);
1231 struct page
*new_inode_page(struct inode
*);
1232 struct page
*new_node_page(struct dnode_of_data
*, unsigned int, struct page
*);
1233 void ra_node_page(struct f2fs_sb_info
*, nid_t
);
1234 struct page
*get_node_page(struct f2fs_sb_info
*, pgoff_t
);
1235 struct page
*get_node_page_ra(struct page
*, int);
1236 void sync_inode_page(struct dnode_of_data
*);
1237 int sync_node_pages(struct f2fs_sb_info
*, nid_t
, struct writeback_control
*);
1238 bool alloc_nid(struct f2fs_sb_info
*, nid_t
*);
1239 void alloc_nid_done(struct f2fs_sb_info
*, nid_t
);
1240 void alloc_nid_failed(struct f2fs_sb_info
*, nid_t
);
1241 void recover_inline_xattr(struct inode
*, struct page
*);
1242 void recover_xattr_data(struct inode
*, struct page
*, block_t
);
1243 int recover_inode_page(struct f2fs_sb_info
*, struct page
*);
1244 int restore_node_summary(struct f2fs_sb_info
*, unsigned int,
1245 struct f2fs_summary_block
*);
1246 void flush_nat_entries(struct f2fs_sb_info
*);
1247 int build_node_manager(struct f2fs_sb_info
*);
1248 void destroy_node_manager(struct f2fs_sb_info
*);
1249 int __init
create_node_manager_caches(void);
1250 void destroy_node_manager_caches(void);
1255 void f2fs_balance_fs(struct f2fs_sb_info
*);
1256 void f2fs_balance_fs_bg(struct f2fs_sb_info
*);
1257 int f2fs_issue_flush(struct f2fs_sb_info
*);
1258 int create_flush_cmd_control(struct f2fs_sb_info
*);
1259 void destroy_flush_cmd_control(struct f2fs_sb_info
*);
1260 void invalidate_blocks(struct f2fs_sb_info
*, block_t
);
1261 void refresh_sit_entry(struct f2fs_sb_info
*, block_t
, block_t
);
1262 void clear_prefree_segments(struct f2fs_sb_info
*);
1263 void discard_next_dnode(struct f2fs_sb_info
*, block_t
);
1264 int npages_for_summary_flush(struct f2fs_sb_info
*);
1265 void allocate_new_segments(struct f2fs_sb_info
*);
1266 struct page
*get_sum_page(struct f2fs_sb_info
*, unsigned int);
1267 void write_meta_page(struct f2fs_sb_info
*, struct page
*);
1268 void write_node_page(struct f2fs_sb_info
*, struct page
*,
1269 struct f2fs_io_info
*, unsigned int, block_t
, block_t
*);
1270 void write_data_page(struct page
*, struct dnode_of_data
*, block_t
*,
1271 struct f2fs_io_info
*);
1272 void rewrite_data_page(struct page
*, block_t
, struct f2fs_io_info
*);
1273 void recover_data_page(struct f2fs_sb_info
*, struct page
*,
1274 struct f2fs_summary
*, block_t
, block_t
);
1275 void allocate_data_block(struct f2fs_sb_info
*, struct page
*,
1276 block_t
, block_t
*, struct f2fs_summary
*, int);
1277 void f2fs_wait_on_page_writeback(struct page
*, enum page_type
);
1278 void write_data_summaries(struct f2fs_sb_info
*, block_t
);
1279 void write_node_summaries(struct f2fs_sb_info
*, block_t
);
1280 int lookup_journal_in_cursum(struct f2fs_summary_block
*,
1281 int, unsigned int, int);
1282 void flush_sit_entries(struct f2fs_sb_info
*);
1283 int build_segment_manager(struct f2fs_sb_info
*);
1284 void destroy_segment_manager(struct f2fs_sb_info
*);
1285 int __init
create_segment_manager_caches(void);
1286 void destroy_segment_manager_caches(void);
1291 struct page
*grab_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1292 struct page
*get_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1293 int ra_meta_pages(struct f2fs_sb_info
*, int, int, int);
1294 long sync_meta_pages(struct f2fs_sb_info
*, enum page_type
, long);
1295 void add_dirty_inode(struct f2fs_sb_info
*, nid_t
, int type
);
1296 void remove_dirty_inode(struct f2fs_sb_info
*, nid_t
, int type
);
1297 void release_dirty_inode(struct f2fs_sb_info
*);
1298 bool exist_written_data(struct f2fs_sb_info
*, nid_t
, int);
1299 int acquire_orphan_inode(struct f2fs_sb_info
*);
1300 void release_orphan_inode(struct f2fs_sb_info
*);
1301 void add_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1302 void remove_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1303 void recover_orphan_inodes(struct f2fs_sb_info
*);
1304 int get_valid_checkpoint(struct f2fs_sb_info
*);
1305 void set_dirty_dir_page(struct inode
*, struct page
*);
1306 void add_dirty_dir_inode(struct inode
*);
1307 void remove_dirty_dir_inode(struct inode
*);
1308 void sync_dirty_dir_inodes(struct f2fs_sb_info
*);
1309 void write_checkpoint(struct f2fs_sb_info
*, bool);
1310 void init_ino_entry_info(struct f2fs_sb_info
*);
1311 int __init
create_checkpoint_caches(void);
1312 void destroy_checkpoint_caches(void);
1317 void f2fs_submit_merged_bio(struct f2fs_sb_info
*, enum page_type
, int);
1318 int f2fs_submit_page_bio(struct f2fs_sb_info
*, struct page
*, block_t
, int);
1319 void f2fs_submit_page_mbio(struct f2fs_sb_info
*, struct page
*, block_t
,
1320 struct f2fs_io_info
*);
1321 int reserve_new_block(struct dnode_of_data
*);
1322 int f2fs_reserve_block(struct dnode_of_data
*, pgoff_t
);
1323 void update_extent_cache(block_t
, struct dnode_of_data
*);
1324 struct page
*find_data_page(struct inode
*, pgoff_t
, bool);
1325 struct page
*get_lock_data_page(struct inode
*, pgoff_t
);
1326 struct page
*get_new_data_page(struct inode
*, struct page
*, pgoff_t
, bool);
1327 int do_write_data_page(struct page
*, struct f2fs_io_info
*);
1328 int f2fs_fiemap(struct inode
*inode
, struct fiemap_extent_info
*, u64
, u64
);
1333 int start_gc_thread(struct f2fs_sb_info
*);
1334 void stop_gc_thread(struct f2fs_sb_info
*);
1335 block_t
start_bidx_of_node(unsigned int, struct f2fs_inode_info
*);
1336 int f2fs_gc(struct f2fs_sb_info
*);
1337 void build_gc_manager(struct f2fs_sb_info
*);
1338 int __init
create_gc_caches(void);
1339 void destroy_gc_caches(void);
1344 int recover_fsync_data(struct f2fs_sb_info
*);
1345 bool space_for_roll_forward(struct f2fs_sb_info
*);
1350 #ifdef CONFIG_F2FS_STAT_FS
1351 struct f2fs_stat_info
{
1352 struct list_head stat_list
;
1353 struct f2fs_sb_info
*sbi
;
1354 int all_area_segs
, sit_area_segs
, nat_area_segs
, ssa_area_segs
;
1355 int main_area_segs
, main_area_sections
, main_area_zones
;
1356 int hit_ext
, total_ext
;
1357 int ndirty_node
, ndirty_dent
, ndirty_dirs
, ndirty_meta
;
1358 int nats
, sits
, fnids
;
1359 int total_count
, utilization
;
1360 int bg_gc
, inline_inode
;
1361 unsigned int valid_count
, valid_node_count
, valid_inode_count
;
1362 unsigned int bimodal
, avg_vblocks
;
1363 int util_free
, util_valid
, util_invalid
;
1364 int rsvd_segs
, overp_segs
;
1365 int dirty_count
, node_pages
, meta_pages
;
1366 int prefree_count
, call_count
, cp_count
;
1367 int tot_segs
, node_segs
, data_segs
, free_segs
, free_secs
;
1368 int tot_blks
, data_blks
, node_blks
;
1369 int curseg
[NR_CURSEG_TYPE
];
1370 int cursec
[NR_CURSEG_TYPE
];
1371 int curzone
[NR_CURSEG_TYPE
];
1373 unsigned int segment_count
[2];
1374 unsigned int block_count
[2];
1375 unsigned base_mem
, cache_mem
;
1378 static inline struct f2fs_stat_info
*F2FS_STAT(struct f2fs_sb_info
*sbi
)
1380 return (struct f2fs_stat_info
*)sbi
->stat_info
;
1383 #define stat_inc_cp_count(si) ((si)->cp_count++)
1384 #define stat_inc_call_count(si) ((si)->call_count++)
1385 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1386 #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1387 #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
1388 #define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++)
1389 #define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++)
1390 #define stat_inc_inline_inode(inode) \
1392 if (f2fs_has_inline_data(inode)) \
1393 ((F2FS_I_SB(inode))->inline_inode++); \
1395 #define stat_dec_inline_inode(inode) \
1397 if (f2fs_has_inline_data(inode)) \
1398 ((F2FS_I_SB(inode))->inline_inode--); \
1401 #define stat_inc_seg_type(sbi, curseg) \
1402 ((sbi)->segment_count[(curseg)->alloc_type]++)
1403 #define stat_inc_block_count(sbi, curseg) \
1404 ((sbi)->block_count[(curseg)->alloc_type]++)
1406 #define stat_inc_seg_count(sbi, type) \
1408 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1410 if (type == SUM_TYPE_DATA) \
1416 #define stat_inc_tot_blk_count(si, blks) \
1417 (si->tot_blks += (blks))
1419 #define stat_inc_data_blk_count(sbi, blks) \
1421 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1422 stat_inc_tot_blk_count(si, blks); \
1423 si->data_blks += (blks); \
1426 #define stat_inc_node_blk_count(sbi, blks) \
1428 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1429 stat_inc_tot_blk_count(si, blks); \
1430 si->node_blks += (blks); \
1433 int f2fs_build_stats(struct f2fs_sb_info
*);
1434 void f2fs_destroy_stats(struct f2fs_sb_info
*);
1435 void __init
f2fs_create_root_stats(void);
1436 void f2fs_destroy_root_stats(void);
1438 #define stat_inc_cp_count(si)
1439 #define stat_inc_call_count(si)
1440 #define stat_inc_bggc_count(si)
1441 #define stat_inc_dirty_dir(sbi)
1442 #define stat_dec_dirty_dir(sbi)
1443 #define stat_inc_total_hit(sb)
1444 #define stat_inc_read_hit(sb)
1445 #define stat_inc_inline_inode(inode)
1446 #define stat_dec_inline_inode(inode)
1447 #define stat_inc_seg_type(sbi, curseg)
1448 #define stat_inc_block_count(sbi, curseg)
1449 #define stat_inc_seg_count(si, type)
1450 #define stat_inc_tot_blk_count(si, blks)
1451 #define stat_inc_data_blk_count(si, blks)
1452 #define stat_inc_node_blk_count(sbi, blks)
1454 static inline int f2fs_build_stats(struct f2fs_sb_info
*sbi
) { return 0; }
1455 static inline void f2fs_destroy_stats(struct f2fs_sb_info
*sbi
) { }
1456 static inline void __init
f2fs_create_root_stats(void) { }
1457 static inline void f2fs_destroy_root_stats(void) { }
1460 extern const struct file_operations f2fs_dir_operations
;
1461 extern const struct file_operations f2fs_file_operations
;
1462 extern const struct inode_operations f2fs_file_inode_operations
;
1463 extern const struct address_space_operations f2fs_dblock_aops
;
1464 extern const struct address_space_operations f2fs_node_aops
;
1465 extern const struct address_space_operations f2fs_meta_aops
;
1466 extern const struct inode_operations f2fs_dir_inode_operations
;
1467 extern const struct inode_operations f2fs_symlink_inode_operations
;
1468 extern const struct inode_operations f2fs_special_inode_operations
;
1473 bool f2fs_may_inline(struct inode
*);
1474 int f2fs_read_inline_data(struct inode
*, struct page
*);
1475 int f2fs_convert_inline_data(struct inode
*, pgoff_t
, struct page
*);
1476 int f2fs_write_inline_data(struct inode
*, struct page
*, unsigned int);
1477 void truncate_inline_data(struct inode
*, u64
);
1478 bool recover_inline_data(struct inode
*, struct page
*);