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
52 #define F2FS_MOUNT_FASTBOOT 0x00001000
54 #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
55 #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
56 #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
58 #define ver_after(a, b) (typecheck(unsigned long long, a) && \
59 typecheck(unsigned long long, b) && \
60 ((long long)((a) - (b)) > 0))
62 typedef u32 block_t
; /*
63 * should not change u32, since it is the on-disk block
64 * address format, __le32.
68 struct f2fs_mount_info
{
72 #define CRCPOLY_LE 0xedb88320
74 static inline __u32
f2fs_crc32(void *buf
, size_t len
)
76 unsigned char *p
= (unsigned char *)buf
;
77 __u32 crc
= F2FS_SUPER_MAGIC
;
82 for (i
= 0; i
< 8; i
++)
83 crc
= (crc
>> 1) ^ ((crc
& 1) ? CRCPOLY_LE
: 0);
88 static inline bool f2fs_crc_valid(__u32 blk_crc
, void *buf
, size_t buf_size
)
90 return f2fs_crc32(buf
, buf_size
) == blk_crc
;
94 * For checkpoint manager
116 * For CP/NAT/SIT/SSA readahead
126 /* for the list of ino */
128 ORPHAN_INO
, /* for orphan ino list */
129 APPEND_INO
, /* for append ino list */
130 UPDATE_INO
, /* for update ino list */
131 MAX_INO_ENTRY
, /* max. list */
135 struct list_head list
; /* list head */
136 nid_t ino
; /* inode number */
139 /* for the list of directory inodes */
140 struct dir_inode_entry
{
141 struct list_head list
; /* list head */
142 struct inode
*inode
; /* vfs inode pointer */
145 /* for the list of blockaddresses to be discarded */
146 struct discard_entry
{
147 struct list_head list
; /* list head */
148 block_t blkaddr
; /* block address to be discarded */
149 int len
; /* # of consecutive blocks of the discard */
152 /* for the list of fsync inodes, used only during recovery */
153 struct fsync_inode_entry
{
154 struct list_head list
; /* list head */
155 struct inode
*inode
; /* vfs inode pointer */
156 block_t blkaddr
; /* block address locating the last fsync */
157 block_t last_dentry
; /* block address locating the last dentry */
158 block_t last_inode
; /* block address locating the last inode */
161 #define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
162 #define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
164 #define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
165 #define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
166 #define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
167 #define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
169 #define MAX_NAT_JENTRIES(sum) (NAT_JOURNAL_ENTRIES - nats_in_cursum(sum))
170 #define MAX_SIT_JENTRIES(sum) (SIT_JOURNAL_ENTRIES - sits_in_cursum(sum))
172 static inline int update_nats_in_cursum(struct f2fs_summary_block
*rs
, int i
)
174 int before
= nats_in_cursum(rs
);
175 rs
->n_nats
= cpu_to_le16(before
+ i
);
179 static inline int update_sits_in_cursum(struct f2fs_summary_block
*rs
, int i
)
181 int before
= sits_in_cursum(rs
);
182 rs
->n_sits
= cpu_to_le16(before
+ i
);
186 static inline bool __has_cursum_space(struct f2fs_summary_block
*sum
, int size
,
189 if (type
== NAT_JOURNAL
)
190 return size
<= MAX_NAT_JENTRIES(sum
);
191 return size
<= MAX_SIT_JENTRIES(sum
);
197 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
198 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
200 #define F2FS_IOCTL_MAGIC 0xf5
201 #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
202 #define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
203 #define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
205 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
207 * ioctl commands in 32 bit emulation
209 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
210 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
214 * For INODE and NODE manager
216 /* for directory operations */
217 struct f2fs_dentry_ptr
{
219 struct f2fs_dir_entry
*dentry
;
220 __u8 (*filename
)[F2FS_SLOT_LEN
];
224 static inline void make_dentry_ptr(struct f2fs_dentry_ptr
*d
,
228 struct f2fs_dentry_block
*t
= (struct f2fs_dentry_block
*)src
;
229 d
->max
= NR_DENTRY_IN_BLOCK
;
230 d
->bitmap
= &t
->dentry_bitmap
;
231 d
->dentry
= t
->dentry
;
232 d
->filename
= t
->filename
;
234 struct f2fs_inline_dentry
*t
= (struct f2fs_inline_dentry
*)src
;
235 d
->max
= NR_INLINE_DENTRY
;
236 d
->bitmap
= &t
->dentry_bitmap
;
237 d
->dentry
= t
->dentry
;
238 d
->filename
= t
->filename
;
243 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
244 * as its node offset to distinguish from index node blocks.
245 * But some bits are used to mark the node block.
247 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
250 ALLOC_NODE
, /* allocate a new node page if needed */
251 LOOKUP_NODE
, /* look up a node without readahead */
253 * look up a node with readahead called
258 #define F2FS_LINK_MAX 32000 /* maximum link count per file */
260 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
262 /* for in-memory extent cache entry */
263 #define F2FS_MIN_EXTENT_LEN 16 /* minimum extent length */
266 rwlock_t ext_lock
; /* rwlock for consistency */
267 unsigned int fofs
; /* start offset in a file */
268 u32 blk_addr
; /* start block address of the extent */
269 unsigned int len
; /* length of the extent */
273 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
275 #define FADVISE_COLD_BIT 0x01
276 #define FADVISE_LOST_PINO_BIT 0x02
278 #define DEF_DIR_LEVEL 0
280 struct f2fs_inode_info
{
281 struct inode vfs_inode
; /* serve a vfs inode */
282 unsigned long i_flags
; /* keep an inode flags for ioctl */
283 unsigned char i_advise
; /* use to give file attribute hints */
284 unsigned char i_dir_level
; /* use for dentry level for large dir */
285 unsigned int i_current_depth
; /* use only in directory structure */
286 unsigned int i_pino
; /* parent inode number */
287 umode_t i_acl_mode
; /* keep file acl mode temporarily */
289 /* Use below internally in f2fs*/
290 unsigned long flags
; /* use to pass per-file flags */
291 struct rw_semaphore i_sem
; /* protect fi info */
292 atomic_t dirty_pages
; /* # of dirty pages */
293 f2fs_hash_t chash
; /* hash value of given file name */
294 unsigned int clevel
; /* maximum level of given file name */
295 nid_t i_xattr_nid
; /* node id that contains xattrs */
296 unsigned long long xattr_ver
; /* cp version of xattr modification */
297 struct extent_info ext
; /* in-memory extent cache entry */
298 struct dir_inode_entry
*dirty_dir
; /* the pointer of dirty dir */
300 struct radix_tree_root inmem_root
; /* radix tree for inmem pages */
301 struct list_head inmem_pages
; /* inmemory pages managed by f2fs */
302 struct mutex inmem_lock
; /* lock for inmemory pages */
305 static inline void get_extent_info(struct extent_info
*ext
,
306 struct f2fs_extent i_ext
)
308 write_lock(&ext
->ext_lock
);
309 ext
->fofs
= le32_to_cpu(i_ext
.fofs
);
310 ext
->blk_addr
= le32_to_cpu(i_ext
.blk_addr
);
311 ext
->len
= le32_to_cpu(i_ext
.len
);
312 write_unlock(&ext
->ext_lock
);
315 static inline void set_raw_extent(struct extent_info
*ext
,
316 struct f2fs_extent
*i_ext
)
318 read_lock(&ext
->ext_lock
);
319 i_ext
->fofs
= cpu_to_le32(ext
->fofs
);
320 i_ext
->blk_addr
= cpu_to_le32(ext
->blk_addr
);
321 i_ext
->len
= cpu_to_le32(ext
->len
);
322 read_unlock(&ext
->ext_lock
);
325 struct f2fs_nm_info
{
326 block_t nat_blkaddr
; /* base disk address of NAT */
327 nid_t max_nid
; /* maximum possible node ids */
328 nid_t available_nids
; /* maximum available node ids */
329 nid_t next_scan_nid
; /* the next nid to be scanned */
330 unsigned int ram_thresh
; /* control the memory footprint */
332 /* NAT cache management */
333 struct radix_tree_root nat_root
;/* root of the nat entry cache */
334 struct radix_tree_root nat_set_root
;/* root of the nat set cache */
335 struct rw_semaphore nat_tree_lock
; /* protect nat_tree_lock */
336 struct list_head nat_entries
; /* cached nat entry list (clean) */
337 unsigned int nat_cnt
; /* the # of cached nat entries */
338 unsigned int dirty_nat_cnt
; /* total num of nat entries in set */
340 /* free node ids management */
341 struct radix_tree_root free_nid_root
;/* root of the free_nid cache */
342 struct list_head free_nid_list
; /* a list for free nids */
343 spinlock_t free_nid_list_lock
; /* protect free nid list */
344 unsigned int fcnt
; /* the number of free node id */
345 struct mutex build_lock
; /* lock for build free nids */
348 char *nat_bitmap
; /* NAT bitmap pointer */
349 int bitmap_size
; /* bitmap size */
353 * this structure is used as one of function parameters.
354 * all the information are dedicated to a given direct node block determined
355 * by the data offset in a file.
357 struct dnode_of_data
{
358 struct inode
*inode
; /* vfs inode pointer */
359 struct page
*inode_page
; /* its inode page, NULL is possible */
360 struct page
*node_page
; /* cached direct node page */
361 nid_t nid
; /* node id of the direct node block */
362 unsigned int ofs_in_node
; /* data offset in the node page */
363 bool inode_page_locked
; /* inode page is locked or not */
364 block_t data_blkaddr
; /* block address of the node block */
367 static inline void set_new_dnode(struct dnode_of_data
*dn
, struct inode
*inode
,
368 struct page
*ipage
, struct page
*npage
, nid_t nid
)
370 memset(dn
, 0, sizeof(*dn
));
372 dn
->inode_page
= ipage
;
373 dn
->node_page
= npage
;
380 * By default, there are 6 active log areas across the whole main area.
381 * When considering hot and cold data separation to reduce cleaning overhead,
382 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
384 * In the current design, you should not change the numbers intentionally.
385 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
386 * logs individually according to the underlying devices. (default: 6)
387 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
388 * data and 8 for node logs.
390 #define NR_CURSEG_DATA_TYPE (3)
391 #define NR_CURSEG_NODE_TYPE (3)
392 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
395 CURSEG_HOT_DATA
= 0, /* directory entry blocks */
396 CURSEG_WARM_DATA
, /* data blocks */
397 CURSEG_COLD_DATA
, /* multimedia or GCed data blocks */
398 CURSEG_HOT_NODE
, /* direct node blocks of directory files */
399 CURSEG_WARM_NODE
, /* direct node blocks of normal files */
400 CURSEG_COLD_NODE
, /* indirect node blocks */
405 struct completion wait
;
406 struct llist_node llnode
;
410 struct flush_cmd_control
{
411 struct task_struct
*f2fs_issue_flush
; /* flush thread */
412 wait_queue_head_t flush_wait_queue
; /* waiting queue for wake-up */
413 struct llist_head issue_list
; /* list for command issue */
414 struct llist_node
*dispatch_list
; /* list for command dispatch */
417 struct f2fs_sm_info
{
418 struct sit_info
*sit_info
; /* whole segment information */
419 struct free_segmap_info
*free_info
; /* free segment information */
420 struct dirty_seglist_info
*dirty_info
; /* dirty segment information */
421 struct curseg_info
*curseg_array
; /* active segment information */
423 block_t seg0_blkaddr
; /* block address of 0'th segment */
424 block_t main_blkaddr
; /* start block address of main area */
425 block_t ssa_blkaddr
; /* start block address of SSA area */
427 unsigned int segment_count
; /* total # of segments */
428 unsigned int main_segments
; /* # of segments in main area */
429 unsigned int reserved_segments
; /* # of reserved segments */
430 unsigned int ovp_segments
; /* # of overprovision segments */
432 /* a threshold to reclaim prefree segments */
433 unsigned int rec_prefree_segments
;
435 /* for small discard management */
436 struct list_head discard_list
; /* 4KB discard list */
437 int nr_discards
; /* # of discards in the list */
438 int max_discards
; /* max. discards to be issued */
440 struct list_head sit_entry_set
; /* sit entry set list */
442 unsigned int ipu_policy
; /* in-place-update policy */
443 unsigned int min_ipu_util
; /* in-place-update threshold */
444 unsigned int min_fsync_blocks
; /* threshold for fsync */
446 /* for flush command control */
447 struct flush_cmd_control
*cmd_control_info
;
455 * COUNT_TYPE for monitoring
457 * f2fs monitors the number of several block types such as on-writeback,
458 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
470 * The below are the page types of bios used in submit_bio().
471 * The available types are:
472 * DATA User data pages. It operates as async mode.
473 * NODE Node pages. It operates as async mode.
474 * META FS metadata pages such as SIT, NAT, CP.
475 * NR_PAGE_TYPE The number of page types.
476 * META_FLUSH Make sure the previous pages are written
477 * with waiting the bio's completion
478 * ... Only can be used with META.
480 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
489 struct f2fs_io_info
{
490 enum page_type type
; /* contains DATA/NODE/META/META_FLUSH */
491 int rw
; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
494 #define is_read_io(rw) (((rw) & 1) == READ)
495 struct f2fs_bio_info
{
496 struct f2fs_sb_info
*sbi
; /* f2fs superblock */
497 struct bio
*bio
; /* bios to merge */
498 sector_t last_block_in_bio
; /* last block number */
499 struct f2fs_io_info fio
; /* store buffered io info. */
500 struct rw_semaphore io_rwsem
; /* blocking op for bio */
503 /* for inner inode cache management */
504 struct inode_management
{
505 struct radix_tree_root ino_root
; /* ino entry array */
506 spinlock_t ino_lock
; /* for ino entry lock */
507 struct list_head ino_list
; /* inode list head */
508 unsigned long ino_num
; /* number of entries */
511 struct f2fs_sb_info
{
512 struct super_block
*sb
; /* pointer to VFS super block */
513 struct proc_dir_entry
*s_proc
; /* proc entry */
514 struct buffer_head
*raw_super_buf
; /* buffer head of raw sb */
515 struct f2fs_super_block
*raw_super
; /* raw super block pointer */
516 int s_dirty
; /* dirty flag for checkpoint */
517 bool need_fsck
; /* need fsck.f2fs to fix */
519 /* for node-related operations */
520 struct f2fs_nm_info
*nm_info
; /* node manager */
521 struct inode
*node_inode
; /* cache node blocks */
523 /* for segment-related operations */
524 struct f2fs_sm_info
*sm_info
; /* segment manager */
526 /* for bio operations */
527 struct f2fs_bio_info read_io
; /* for read bios */
528 struct f2fs_bio_info write_io
[NR_PAGE_TYPE
]; /* for write bios */
531 struct f2fs_checkpoint
*ckpt
; /* raw checkpoint pointer */
532 struct inode
*meta_inode
; /* cache meta blocks */
533 struct mutex cp_mutex
; /* checkpoint procedure lock */
534 struct rw_semaphore cp_rwsem
; /* blocking FS operations */
535 struct rw_semaphore node_write
; /* locking node writes */
536 struct mutex writepages
; /* mutex for writepages() */
537 bool por_doing
; /* recovery is doing or not */
538 wait_queue_head_t cp_wait
;
540 struct inode_management im
[MAX_INO_ENTRY
]; /* manage inode cache */
542 /* for orphan inode, use 0'th array */
543 unsigned int max_orphans
; /* max orphan inodes */
545 /* for directory inode management */
546 struct list_head dir_inode_list
; /* dir inode list */
547 spinlock_t dir_inode_lock
; /* for dir inode list lock */
549 /* basic filesystem units */
550 unsigned int log_sectors_per_block
; /* log2 sectors per block */
551 unsigned int log_blocksize
; /* log2 block size */
552 unsigned int blocksize
; /* block size */
553 unsigned int root_ino_num
; /* root inode number*/
554 unsigned int node_ino_num
; /* node inode number*/
555 unsigned int meta_ino_num
; /* meta inode number*/
556 unsigned int log_blocks_per_seg
; /* log2 blocks per segment */
557 unsigned int blocks_per_seg
; /* blocks per segment */
558 unsigned int segs_per_sec
; /* segments per section */
559 unsigned int secs_per_zone
; /* sections per zone */
560 unsigned int total_sections
; /* total section count */
561 unsigned int total_node_count
; /* total node block count */
562 unsigned int total_valid_node_count
; /* valid node block count */
563 unsigned int total_valid_inode_count
; /* valid inode count */
564 int active_logs
; /* # of active logs */
565 int dir_level
; /* directory level */
567 block_t user_block_count
; /* # of user blocks */
568 block_t total_valid_block_count
; /* # of valid blocks */
569 block_t alloc_valid_block_count
; /* # of allocated blocks */
570 block_t last_valid_block_count
; /* for recovery */
571 u32 s_next_generation
; /* for NFS support */
572 atomic_t nr_pages
[NR_COUNT_TYPE
]; /* # of pages, see count_type */
574 struct f2fs_mount_info mount_opt
; /* mount options */
576 /* for cleaning operations */
577 struct mutex gc_mutex
; /* mutex for GC */
578 struct f2fs_gc_kthread
*gc_thread
; /* GC thread */
579 unsigned int cur_victim_sec
; /* current victim section num */
581 /* maximum # of trials to find a victim segment for SSR and GC */
582 unsigned int max_victim_search
;
585 * for stat information.
586 * one is for the LFS mode, and the other is for the SSR mode.
588 #ifdef CONFIG_F2FS_STAT_FS
589 struct f2fs_stat_info
*stat_info
; /* FS status information */
590 unsigned int segment_count
[2]; /* # of allocated segments */
591 unsigned int block_count
[2]; /* # of allocated blocks */
592 int total_hit_ext
, read_hit_ext
; /* extent cache hit ratio */
593 atomic_t inline_inode
; /* # of inline_data inodes */
594 atomic_t inline_dir
; /* # of inline_dentry inodes */
595 int bg_gc
; /* background gc calls */
596 unsigned int n_dirty_dirs
; /* # of dir inodes */
598 unsigned int last_victim
[2]; /* last victim segment # */
599 spinlock_t stat_lock
; /* lock for stat operations */
601 /* For sysfs suppport */
602 struct kobject s_kobj
;
603 struct completion s_kobj_unregister
;
609 static inline struct f2fs_inode_info
*F2FS_I(struct inode
*inode
)
611 return container_of(inode
, struct f2fs_inode_info
, vfs_inode
);
614 static inline struct f2fs_sb_info
*F2FS_SB(struct super_block
*sb
)
616 return sb
->s_fs_info
;
619 static inline struct f2fs_sb_info
*F2FS_I_SB(struct inode
*inode
)
621 return F2FS_SB(inode
->i_sb
);
624 static inline struct f2fs_sb_info
*F2FS_M_SB(struct address_space
*mapping
)
626 return F2FS_I_SB(mapping
->host
);
629 static inline struct f2fs_sb_info
*F2FS_P_SB(struct page
*page
)
631 return F2FS_M_SB(page
->mapping
);
634 static inline struct f2fs_super_block
*F2FS_RAW_SUPER(struct f2fs_sb_info
*sbi
)
636 return (struct f2fs_super_block
*)(sbi
->raw_super
);
639 static inline struct f2fs_checkpoint
*F2FS_CKPT(struct f2fs_sb_info
*sbi
)
641 return (struct f2fs_checkpoint
*)(sbi
->ckpt
);
644 static inline struct f2fs_node
*F2FS_NODE(struct page
*page
)
646 return (struct f2fs_node
*)page_address(page
);
649 static inline struct f2fs_inode
*F2FS_INODE(struct page
*page
)
651 return &((struct f2fs_node
*)page_address(page
))->i
;
654 static inline struct f2fs_nm_info
*NM_I(struct f2fs_sb_info
*sbi
)
656 return (struct f2fs_nm_info
*)(sbi
->nm_info
);
659 static inline struct f2fs_sm_info
*SM_I(struct f2fs_sb_info
*sbi
)
661 return (struct f2fs_sm_info
*)(sbi
->sm_info
);
664 static inline struct sit_info
*SIT_I(struct f2fs_sb_info
*sbi
)
666 return (struct sit_info
*)(SM_I(sbi
)->sit_info
);
669 static inline struct free_segmap_info
*FREE_I(struct f2fs_sb_info
*sbi
)
671 return (struct free_segmap_info
*)(SM_I(sbi
)->free_info
);
674 static inline struct dirty_seglist_info
*DIRTY_I(struct f2fs_sb_info
*sbi
)
676 return (struct dirty_seglist_info
*)(SM_I(sbi
)->dirty_info
);
679 static inline struct address_space
*META_MAPPING(struct f2fs_sb_info
*sbi
)
681 return sbi
->meta_inode
->i_mapping
;
684 static inline struct address_space
*NODE_MAPPING(struct f2fs_sb_info
*sbi
)
686 return sbi
->node_inode
->i_mapping
;
689 static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info
*sbi
)
694 static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info
*sbi
)
699 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint
*cp
)
701 return le64_to_cpu(cp
->checkpoint_ver
);
704 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
706 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
707 return ckpt_flags
& f
;
710 static inline void set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
712 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
714 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
717 static inline void clear_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
719 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
721 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
724 static inline void f2fs_lock_op(struct f2fs_sb_info
*sbi
)
726 down_read(&sbi
->cp_rwsem
);
729 static inline void f2fs_unlock_op(struct f2fs_sb_info
*sbi
)
731 up_read(&sbi
->cp_rwsem
);
734 static inline void f2fs_lock_all(struct f2fs_sb_info
*sbi
)
736 f2fs_down_write(&sbi
->cp_rwsem
, &sbi
->cp_mutex
);
739 static inline void f2fs_unlock_all(struct f2fs_sb_info
*sbi
)
741 up_write(&sbi
->cp_rwsem
);
745 * Check whether the given nid is within node id range.
747 static inline int check_nid_range(struct f2fs_sb_info
*sbi
, nid_t nid
)
749 if (unlikely(nid
< F2FS_ROOT_INO(sbi
)))
751 if (unlikely(nid
>= NM_I(sbi
)->max_nid
))
756 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
759 * Check whether the inode has blocks or not
761 static inline int F2FS_HAS_BLOCKS(struct inode
*inode
)
763 if (F2FS_I(inode
)->i_xattr_nid
)
764 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
+ 1;
766 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
;
769 static inline bool f2fs_has_xattr_block(unsigned int ofs
)
771 return ofs
== XATTR_NODE_OFFSET
;
774 static inline bool inc_valid_block_count(struct f2fs_sb_info
*sbi
,
775 struct inode
*inode
, blkcnt_t count
)
777 block_t valid_block_count
;
779 spin_lock(&sbi
->stat_lock
);
781 sbi
->total_valid_block_count
+ (block_t
)count
;
782 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
783 spin_unlock(&sbi
->stat_lock
);
786 inode
->i_blocks
+= count
;
787 sbi
->total_valid_block_count
= valid_block_count
;
788 sbi
->alloc_valid_block_count
+= (block_t
)count
;
789 spin_unlock(&sbi
->stat_lock
);
793 static inline void dec_valid_block_count(struct f2fs_sb_info
*sbi
,
797 spin_lock(&sbi
->stat_lock
);
798 f2fs_bug_on(sbi
, sbi
->total_valid_block_count
< (block_t
) count
);
799 f2fs_bug_on(sbi
, inode
->i_blocks
< count
);
800 inode
->i_blocks
-= count
;
801 sbi
->total_valid_block_count
-= (block_t
)count
;
802 spin_unlock(&sbi
->stat_lock
);
805 static inline void inc_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
807 atomic_inc(&sbi
->nr_pages
[count_type
]);
808 F2FS_SET_SB_DIRT(sbi
);
811 static inline void inode_inc_dirty_pages(struct inode
*inode
)
813 atomic_inc(&F2FS_I(inode
)->dirty_pages
);
814 if (S_ISDIR(inode
->i_mode
))
815 inc_page_count(F2FS_I_SB(inode
), F2FS_DIRTY_DENTS
);
818 static inline void dec_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
820 atomic_dec(&sbi
->nr_pages
[count_type
]);
823 static inline void inode_dec_dirty_pages(struct inode
*inode
)
825 if (!S_ISDIR(inode
->i_mode
) && !S_ISREG(inode
->i_mode
))
828 atomic_dec(&F2FS_I(inode
)->dirty_pages
);
830 if (S_ISDIR(inode
->i_mode
))
831 dec_page_count(F2FS_I_SB(inode
), F2FS_DIRTY_DENTS
);
834 static inline int get_pages(struct f2fs_sb_info
*sbi
, int count_type
)
836 return atomic_read(&sbi
->nr_pages
[count_type
]);
839 static inline int get_dirty_pages(struct inode
*inode
)
841 return atomic_read(&F2FS_I(inode
)->dirty_pages
);
844 static inline int get_blocktype_secs(struct f2fs_sb_info
*sbi
, int block_type
)
846 unsigned int pages_per_sec
= sbi
->segs_per_sec
*
847 (1 << sbi
->log_blocks_per_seg
);
848 return ((get_pages(sbi
, block_type
) + pages_per_sec
- 1)
849 >> sbi
->log_blocks_per_seg
) / sbi
->segs_per_sec
;
852 static inline block_t
valid_user_blocks(struct f2fs_sb_info
*sbi
)
854 return sbi
->total_valid_block_count
;
857 static inline unsigned long __bitmap_size(struct f2fs_sb_info
*sbi
, int flag
)
859 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
861 /* return NAT or SIT bitmap */
862 if (flag
== NAT_BITMAP
)
863 return le32_to_cpu(ckpt
->nat_ver_bitmap_bytesize
);
864 else if (flag
== SIT_BITMAP
)
865 return le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
);
870 static inline void *__bitmap_ptr(struct f2fs_sb_info
*sbi
, int flag
)
872 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
875 if (le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_payload
) > 0) {
876 if (flag
== NAT_BITMAP
)
877 return &ckpt
->sit_nat_version_bitmap
;
879 return (unsigned char *)ckpt
+ F2FS_BLKSIZE
;
881 offset
= (flag
== NAT_BITMAP
) ?
882 le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
) : 0;
883 return &ckpt
->sit_nat_version_bitmap
+ offset
;
887 static inline block_t
__start_cp_addr(struct f2fs_sb_info
*sbi
)
890 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
891 unsigned long long ckpt_version
= cur_cp_version(ckpt
);
893 start_addr
= le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_blkaddr
);
896 * odd numbered checkpoint should at cp segment 0
897 * and even segment must be at cp segment 1
899 if (!(ckpt_version
& 1))
900 start_addr
+= sbi
->blocks_per_seg
;
905 static inline block_t
__start_sum_addr(struct f2fs_sb_info
*sbi
)
907 return le32_to_cpu(F2FS_CKPT(sbi
)->cp_pack_start_sum
);
910 static inline bool inc_valid_node_count(struct f2fs_sb_info
*sbi
,
913 block_t valid_block_count
;
914 unsigned int valid_node_count
;
916 spin_lock(&sbi
->stat_lock
);
918 valid_block_count
= sbi
->total_valid_block_count
+ 1;
919 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
920 spin_unlock(&sbi
->stat_lock
);
924 valid_node_count
= sbi
->total_valid_node_count
+ 1;
925 if (unlikely(valid_node_count
> sbi
->total_node_count
)) {
926 spin_unlock(&sbi
->stat_lock
);
933 sbi
->alloc_valid_block_count
++;
934 sbi
->total_valid_node_count
++;
935 sbi
->total_valid_block_count
++;
936 spin_unlock(&sbi
->stat_lock
);
941 static inline void dec_valid_node_count(struct f2fs_sb_info
*sbi
,
944 spin_lock(&sbi
->stat_lock
);
946 f2fs_bug_on(sbi
, !sbi
->total_valid_block_count
);
947 f2fs_bug_on(sbi
, !sbi
->total_valid_node_count
);
948 f2fs_bug_on(sbi
, !inode
->i_blocks
);
951 sbi
->total_valid_node_count
--;
952 sbi
->total_valid_block_count
--;
954 spin_unlock(&sbi
->stat_lock
);
957 static inline unsigned int valid_node_count(struct f2fs_sb_info
*sbi
)
959 return sbi
->total_valid_node_count
;
962 static inline void inc_valid_inode_count(struct f2fs_sb_info
*sbi
)
964 spin_lock(&sbi
->stat_lock
);
965 f2fs_bug_on(sbi
, sbi
->total_valid_inode_count
== sbi
->total_node_count
);
966 sbi
->total_valid_inode_count
++;
967 spin_unlock(&sbi
->stat_lock
);
970 static inline void dec_valid_inode_count(struct f2fs_sb_info
*sbi
)
972 spin_lock(&sbi
->stat_lock
);
973 f2fs_bug_on(sbi
, !sbi
->total_valid_inode_count
);
974 sbi
->total_valid_inode_count
--;
975 spin_unlock(&sbi
->stat_lock
);
978 static inline unsigned int valid_inode_count(struct f2fs_sb_info
*sbi
)
980 return sbi
->total_valid_inode_count
;
983 static inline void f2fs_put_page(struct page
*page
, int unlock
)
989 f2fs_bug_on(F2FS_P_SB(page
), !PageLocked(page
));
992 page_cache_release(page
);
995 static inline void f2fs_put_dnode(struct dnode_of_data
*dn
)
998 f2fs_put_page(dn
->node_page
, 1);
999 if (dn
->inode_page
&& dn
->node_page
!= dn
->inode_page
)
1000 f2fs_put_page(dn
->inode_page
, 0);
1001 dn
->node_page
= NULL
;
1002 dn
->inode_page
= NULL
;
1005 static inline struct kmem_cache
*f2fs_kmem_cache_create(const char *name
,
1008 return kmem_cache_create(name
, size
, 0, SLAB_RECLAIM_ACCOUNT
, NULL
);
1011 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache
*cachep
,
1016 entry
= kmem_cache_alloc(cachep
, flags
);
1025 static inline void f2fs_radix_tree_insert(struct radix_tree_root
*root
,
1026 unsigned long index
, void *item
)
1028 while (radix_tree_insert(root
, index
, item
))
1032 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1034 static inline bool IS_INODE(struct page
*page
)
1036 struct f2fs_node
*p
= F2FS_NODE(page
);
1037 return RAW_IS_INODE(p
);
1040 static inline __le32
*blkaddr_in_node(struct f2fs_node
*node
)
1042 return RAW_IS_INODE(node
) ? node
->i
.i_addr
: node
->dn
.addr
;
1045 static inline block_t
datablock_addr(struct page
*node_page
,
1046 unsigned int offset
)
1048 struct f2fs_node
*raw_node
;
1050 raw_node
= F2FS_NODE(node_page
);
1051 addr_array
= blkaddr_in_node(raw_node
);
1052 return le32_to_cpu(addr_array
[offset
]);
1055 static inline int f2fs_test_bit(unsigned int nr
, char *addr
)
1060 mask
= 1 << (7 - (nr
& 0x07));
1061 return mask
& *addr
;
1064 static inline int f2fs_test_and_set_bit(unsigned int nr
, char *addr
)
1070 mask
= 1 << (7 - (nr
& 0x07));
1076 static inline int f2fs_test_and_clear_bit(unsigned int nr
, char *addr
)
1082 mask
= 1 << (7 - (nr
& 0x07));
1088 static inline void f2fs_change_bit(unsigned int nr
, char *addr
)
1093 mask
= 1 << (7 - (nr
& 0x07));
1097 /* used for f2fs_inode_info->flags */
1099 FI_NEW_INODE
, /* indicate newly allocated inode */
1100 FI_DIRTY_INODE
, /* indicate inode is dirty or not */
1101 FI_DIRTY_DIR
, /* indicate directory has dirty pages */
1102 FI_INC_LINK
, /* need to increment i_nlink */
1103 FI_ACL_MODE
, /* indicate acl mode */
1104 FI_NO_ALLOC
, /* should not allocate any blocks */
1105 FI_UPDATE_DIR
, /* should update inode block for consistency */
1106 FI_DELAY_IPUT
, /* used for the recovery */
1107 FI_NO_EXTENT
, /* not to use the extent cache */
1108 FI_INLINE_XATTR
, /* used for inline xattr */
1109 FI_INLINE_DATA
, /* used for inline data*/
1110 FI_INLINE_DENTRY
, /* used for inline dentry */
1111 FI_APPEND_WRITE
, /* inode has appended data */
1112 FI_UPDATE_WRITE
, /* inode has in-place-update data */
1113 FI_NEED_IPU
, /* used for ipu per file */
1114 FI_ATOMIC_FILE
, /* indicate atomic file */
1115 FI_VOLATILE_FILE
, /* indicate volatile file */
1116 FI_DATA_EXIST
, /* indicate data exists */
1119 static inline void set_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1121 if (!test_bit(flag
, &fi
->flags
))
1122 set_bit(flag
, &fi
->flags
);
1125 static inline int is_inode_flag_set(struct f2fs_inode_info
*fi
, int flag
)
1127 return test_bit(flag
, &fi
->flags
);
1130 static inline void clear_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1132 if (test_bit(flag
, &fi
->flags
))
1133 clear_bit(flag
, &fi
->flags
);
1136 static inline void set_acl_inode(struct f2fs_inode_info
*fi
, umode_t mode
)
1138 fi
->i_acl_mode
= mode
;
1139 set_inode_flag(fi
, FI_ACL_MODE
);
1142 static inline void get_inline_info(struct f2fs_inode_info
*fi
,
1143 struct f2fs_inode
*ri
)
1145 if (ri
->i_inline
& F2FS_INLINE_XATTR
)
1146 set_inode_flag(fi
, FI_INLINE_XATTR
);
1147 if (ri
->i_inline
& F2FS_INLINE_DATA
)
1148 set_inode_flag(fi
, FI_INLINE_DATA
);
1149 if (ri
->i_inline
& F2FS_INLINE_DENTRY
)
1150 set_inode_flag(fi
, FI_INLINE_DENTRY
);
1151 if (ri
->i_inline
& F2FS_DATA_EXIST
)
1152 set_inode_flag(fi
, FI_DATA_EXIST
);
1155 static inline void set_raw_inline(struct f2fs_inode_info
*fi
,
1156 struct f2fs_inode
*ri
)
1160 if (is_inode_flag_set(fi
, FI_INLINE_XATTR
))
1161 ri
->i_inline
|= F2FS_INLINE_XATTR
;
1162 if (is_inode_flag_set(fi
, FI_INLINE_DATA
))
1163 ri
->i_inline
|= F2FS_INLINE_DATA
;
1164 if (is_inode_flag_set(fi
, FI_INLINE_DENTRY
))
1165 ri
->i_inline
|= F2FS_INLINE_DENTRY
;
1166 if (is_inode_flag_set(fi
, FI_DATA_EXIST
))
1167 ri
->i_inline
|= F2FS_DATA_EXIST
;
1170 static inline int f2fs_has_inline_xattr(struct inode
*inode
)
1172 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_XATTR
);
1175 static inline unsigned int addrs_per_inode(struct f2fs_inode_info
*fi
)
1177 if (f2fs_has_inline_xattr(&fi
->vfs_inode
))
1178 return DEF_ADDRS_PER_INODE
- F2FS_INLINE_XATTR_ADDRS
;
1179 return DEF_ADDRS_PER_INODE
;
1182 static inline void *inline_xattr_addr(struct page
*page
)
1184 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1185 return (void *)&(ri
->i_addr
[DEF_ADDRS_PER_INODE
-
1186 F2FS_INLINE_XATTR_ADDRS
]);
1189 static inline int inline_xattr_size(struct inode
*inode
)
1191 if (f2fs_has_inline_xattr(inode
))
1192 return F2FS_INLINE_XATTR_ADDRS
<< 2;
1197 static inline int f2fs_has_inline_data(struct inode
*inode
)
1199 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DATA
);
1202 static inline void f2fs_clear_inline_inode(struct inode
*inode
)
1204 clear_inode_flag(F2FS_I(inode
), FI_INLINE_DATA
);
1205 clear_inode_flag(F2FS_I(inode
), FI_DATA_EXIST
);
1208 static inline int f2fs_exist_data(struct inode
*inode
)
1210 return is_inode_flag_set(F2FS_I(inode
), FI_DATA_EXIST
);
1213 static inline bool f2fs_is_atomic_file(struct inode
*inode
)
1215 return is_inode_flag_set(F2FS_I(inode
), FI_ATOMIC_FILE
);
1218 static inline bool f2fs_is_volatile_file(struct inode
*inode
)
1220 return is_inode_flag_set(F2FS_I(inode
), FI_VOLATILE_FILE
);
1223 static inline void *inline_data_addr(struct page
*page
)
1225 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1226 return (void *)&(ri
->i_addr
[1]);
1229 static inline int f2fs_has_inline_dentry(struct inode
*inode
)
1231 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DENTRY
);
1234 static inline void *inline_dentry_addr(struct page
*page
)
1236 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1237 return (void *)&(ri
->i_addr
[1]);
1240 static inline void f2fs_dentry_kunmap(struct inode
*dir
, struct page
*page
)
1242 if (!f2fs_has_inline_dentry(dir
))
1246 static inline int f2fs_readonly(struct super_block
*sb
)
1248 return sb
->s_flags
& MS_RDONLY
;
1251 static inline bool f2fs_cp_error(struct f2fs_sb_info
*sbi
)
1253 return is_set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1256 static inline void f2fs_stop_checkpoint(struct f2fs_sb_info
*sbi
)
1258 set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1259 sbi
->sb
->s_flags
|= MS_RDONLY
;
1262 #define get_inode_mode(i) \
1263 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1264 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1266 /* get offset of first page in next direct node */
1267 #define PGOFS_OF_NEXT_DNODE(pgofs, fi) \
1268 ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \
1269 (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \
1270 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi))
1275 int f2fs_sync_file(struct file
*, loff_t
, loff_t
, int);
1276 void truncate_data_blocks(struct dnode_of_data
*);
1277 int truncate_blocks(struct inode
*, u64
, bool);
1278 void f2fs_truncate(struct inode
*);
1279 int f2fs_getattr(struct vfsmount
*, struct dentry
*, struct kstat
*);
1280 int f2fs_setattr(struct dentry
*, struct iattr
*);
1281 int truncate_hole(struct inode
*, pgoff_t
, pgoff_t
);
1282 int truncate_data_blocks_range(struct dnode_of_data
*, int);
1283 long f2fs_ioctl(struct file
*, unsigned int, unsigned long);
1284 long f2fs_compat_ioctl(struct file
*, unsigned int, unsigned long);
1289 void f2fs_set_inode_flags(struct inode
*);
1290 struct inode
*f2fs_iget(struct super_block
*, unsigned long);
1291 int try_to_free_nats(struct f2fs_sb_info
*, int);
1292 void update_inode(struct inode
*, struct page
*);
1293 void update_inode_page(struct inode
*);
1294 int f2fs_write_inode(struct inode
*, struct writeback_control
*);
1295 void f2fs_evict_inode(struct inode
*);
1296 void handle_failed_inode(struct inode
*);
1301 struct dentry
*f2fs_get_parent(struct dentry
*child
);
1306 extern unsigned char f2fs_filetype_table
[F2FS_FT_MAX
];
1307 void set_de_type(struct f2fs_dir_entry
*, struct inode
*);
1308 struct f2fs_dir_entry
*find_target_dentry(struct qstr
*, int *,
1309 struct f2fs_dentry_ptr
*);
1310 bool f2fs_fill_dentries(struct dir_context
*, struct f2fs_dentry_ptr
*,
1312 void do_make_empty_dir(struct inode
*, struct inode
*,
1313 struct f2fs_dentry_ptr
*);
1314 struct page
*init_inode_metadata(struct inode
*, struct inode
*,
1315 const struct qstr
*, struct page
*);
1316 void update_parent_metadata(struct inode
*, struct inode
*, unsigned int);
1317 int room_for_filename(const void *, int, int);
1318 void f2fs_drop_nlink(struct inode
*, struct inode
*, struct page
*);
1319 struct f2fs_dir_entry
*f2fs_find_entry(struct inode
*, struct qstr
*,
1321 struct f2fs_dir_entry
*f2fs_parent_dir(struct inode
*, struct page
**);
1322 ino_t
f2fs_inode_by_name(struct inode
*, struct qstr
*);
1323 void f2fs_set_link(struct inode
*, struct f2fs_dir_entry
*,
1324 struct page
*, struct inode
*);
1325 int update_dent_inode(struct inode
*, const struct qstr
*);
1326 int __f2fs_add_link(struct inode
*, const struct qstr
*, struct inode
*);
1327 void f2fs_delete_entry(struct f2fs_dir_entry
*, struct page
*, struct inode
*,
1329 int f2fs_do_tmpfile(struct inode
*, struct inode
*);
1330 int f2fs_make_empty(struct inode
*, struct inode
*);
1331 bool f2fs_empty_dir(struct inode
*);
1333 static inline int f2fs_add_link(struct dentry
*dentry
, struct inode
*inode
)
1335 return __f2fs_add_link(dentry
->d_parent
->d_inode
, &dentry
->d_name
,
1342 int f2fs_sync_fs(struct super_block
*, int);
1343 extern __printf(3, 4)
1344 void f2fs_msg(struct super_block
*, const char *, const char *, ...);
1349 f2fs_hash_t
f2fs_dentry_hash(const struct qstr
*);
1354 struct dnode_of_data
;
1357 bool available_free_memory(struct f2fs_sb_info
*, int);
1358 bool is_checkpointed_node(struct f2fs_sb_info
*, nid_t
);
1359 bool has_fsynced_inode(struct f2fs_sb_info
*, nid_t
);
1360 bool need_inode_block_update(struct f2fs_sb_info
*, nid_t
);
1361 void get_node_info(struct f2fs_sb_info
*, nid_t
, struct node_info
*);
1362 int get_dnode_of_data(struct dnode_of_data
*, pgoff_t
, int);
1363 int truncate_inode_blocks(struct inode
*, pgoff_t
);
1364 int truncate_xattr_node(struct inode
*, struct page
*);
1365 int wait_on_node_pages_writeback(struct f2fs_sb_info
*, nid_t
);
1366 void remove_inode_page(struct inode
*);
1367 struct page
*new_inode_page(struct inode
*);
1368 struct page
*new_node_page(struct dnode_of_data
*, unsigned int, struct page
*);
1369 void ra_node_page(struct f2fs_sb_info
*, nid_t
);
1370 struct page
*get_node_page(struct f2fs_sb_info
*, pgoff_t
);
1371 struct page
*get_node_page_ra(struct page
*, int);
1372 void sync_inode_page(struct dnode_of_data
*);
1373 int sync_node_pages(struct f2fs_sb_info
*, nid_t
, struct writeback_control
*);
1374 bool alloc_nid(struct f2fs_sb_info
*, nid_t
*);
1375 void alloc_nid_done(struct f2fs_sb_info
*, nid_t
);
1376 void alloc_nid_failed(struct f2fs_sb_info
*, nid_t
);
1377 void recover_inline_xattr(struct inode
*, struct page
*);
1378 void recover_xattr_data(struct inode
*, struct page
*, block_t
);
1379 int recover_inode_page(struct f2fs_sb_info
*, struct page
*);
1380 int restore_node_summary(struct f2fs_sb_info
*, unsigned int,
1381 struct f2fs_summary_block
*);
1382 void flush_nat_entries(struct f2fs_sb_info
*);
1383 int build_node_manager(struct f2fs_sb_info
*);
1384 void destroy_node_manager(struct f2fs_sb_info
*);
1385 int __init
create_node_manager_caches(void);
1386 void destroy_node_manager_caches(void);
1391 void register_inmem_page(struct inode
*, struct page
*);
1392 void invalidate_inmem_page(struct inode
*, struct page
*);
1393 void commit_inmem_pages(struct inode
*, bool);
1394 void f2fs_balance_fs(struct f2fs_sb_info
*);
1395 void f2fs_balance_fs_bg(struct f2fs_sb_info
*);
1396 int f2fs_issue_flush(struct f2fs_sb_info
*);
1397 int create_flush_cmd_control(struct f2fs_sb_info
*);
1398 void destroy_flush_cmd_control(struct f2fs_sb_info
*);
1399 void invalidate_blocks(struct f2fs_sb_info
*, block_t
);
1400 void refresh_sit_entry(struct f2fs_sb_info
*, block_t
, block_t
);
1401 void clear_prefree_segments(struct f2fs_sb_info
*);
1402 void release_discard_addrs(struct f2fs_sb_info
*);
1403 void discard_next_dnode(struct f2fs_sb_info
*, block_t
);
1404 int npages_for_summary_flush(struct f2fs_sb_info
*);
1405 void allocate_new_segments(struct f2fs_sb_info
*);
1406 int f2fs_trim_fs(struct f2fs_sb_info
*, struct fstrim_range
*);
1407 struct page
*get_sum_page(struct f2fs_sb_info
*, unsigned int);
1408 void write_meta_page(struct f2fs_sb_info
*, struct page
*);
1409 void write_node_page(struct f2fs_sb_info
*, struct page
*,
1410 struct f2fs_io_info
*, unsigned int, block_t
, block_t
*);
1411 void write_data_page(struct page
*, struct dnode_of_data
*, block_t
*,
1412 struct f2fs_io_info
*);
1413 void rewrite_data_page(struct page
*, block_t
, struct f2fs_io_info
*);
1414 void recover_data_page(struct f2fs_sb_info
*, struct page
*,
1415 struct f2fs_summary
*, block_t
, block_t
);
1416 void allocate_data_block(struct f2fs_sb_info
*, struct page
*,
1417 block_t
, block_t
*, struct f2fs_summary
*, int);
1418 void f2fs_wait_on_page_writeback(struct page
*, enum page_type
);
1419 void write_data_summaries(struct f2fs_sb_info
*, block_t
);
1420 void write_node_summaries(struct f2fs_sb_info
*, block_t
);
1421 int lookup_journal_in_cursum(struct f2fs_summary_block
*,
1422 int, unsigned int, int);
1423 void flush_sit_entries(struct f2fs_sb_info
*, struct cp_control
*);
1424 int build_segment_manager(struct f2fs_sb_info
*);
1425 void destroy_segment_manager(struct f2fs_sb_info
*);
1426 int __init
create_segment_manager_caches(void);
1427 void destroy_segment_manager_caches(void);
1432 struct page
*grab_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1433 struct page
*get_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1434 int ra_meta_pages(struct f2fs_sb_info
*, block_t
, int, int);
1435 void ra_meta_pages_cond(struct f2fs_sb_info
*, pgoff_t
);
1436 long sync_meta_pages(struct f2fs_sb_info
*, enum page_type
, long);
1437 void add_dirty_inode(struct f2fs_sb_info
*, nid_t
, int type
);
1438 void remove_dirty_inode(struct f2fs_sb_info
*, nid_t
, int type
);
1439 void release_dirty_inode(struct f2fs_sb_info
*);
1440 bool exist_written_data(struct f2fs_sb_info
*, nid_t
, int);
1441 int acquire_orphan_inode(struct f2fs_sb_info
*);
1442 void release_orphan_inode(struct f2fs_sb_info
*);
1443 void add_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1444 void remove_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1445 void recover_orphan_inodes(struct f2fs_sb_info
*);
1446 int get_valid_checkpoint(struct f2fs_sb_info
*);
1447 void update_dirty_page(struct inode
*, struct page
*);
1448 void add_dirty_dir_inode(struct inode
*);
1449 void remove_dirty_dir_inode(struct inode
*);
1450 void sync_dirty_dir_inodes(struct f2fs_sb_info
*);
1451 void write_checkpoint(struct f2fs_sb_info
*, struct cp_control
*);
1452 void init_ino_entry_info(struct f2fs_sb_info
*);
1453 int __init
create_checkpoint_caches(void);
1454 void destroy_checkpoint_caches(void);
1459 void f2fs_submit_merged_bio(struct f2fs_sb_info
*, enum page_type
, int);
1460 int f2fs_submit_page_bio(struct f2fs_sb_info
*, struct page
*, block_t
, int);
1461 void f2fs_submit_page_mbio(struct f2fs_sb_info
*, struct page
*, block_t
,
1462 struct f2fs_io_info
*);
1463 int reserve_new_block(struct dnode_of_data
*);
1464 int f2fs_reserve_block(struct dnode_of_data
*, pgoff_t
);
1465 void update_extent_cache(block_t
, struct dnode_of_data
*);
1466 struct page
*find_data_page(struct inode
*, pgoff_t
, bool);
1467 struct page
*get_lock_data_page(struct inode
*, pgoff_t
);
1468 struct page
*get_new_data_page(struct inode
*, struct page
*, pgoff_t
, bool);
1469 int do_write_data_page(struct page
*, struct f2fs_io_info
*);
1470 int f2fs_fiemap(struct inode
*inode
, struct fiemap_extent_info
*, u64
, u64
);
1475 int start_gc_thread(struct f2fs_sb_info
*);
1476 void stop_gc_thread(struct f2fs_sb_info
*);
1477 block_t
start_bidx_of_node(unsigned int, struct f2fs_inode_info
*);
1478 int f2fs_gc(struct f2fs_sb_info
*);
1479 void build_gc_manager(struct f2fs_sb_info
*);
1480 int __init
create_gc_caches(void);
1481 void destroy_gc_caches(void);
1486 int recover_fsync_data(struct f2fs_sb_info
*);
1487 bool space_for_roll_forward(struct f2fs_sb_info
*);
1492 #ifdef CONFIG_F2FS_STAT_FS
1493 struct f2fs_stat_info
{
1494 struct list_head stat_list
;
1495 struct f2fs_sb_info
*sbi
;
1496 int all_area_segs
, sit_area_segs
, nat_area_segs
, ssa_area_segs
;
1497 int main_area_segs
, main_area_sections
, main_area_zones
;
1498 int hit_ext
, total_ext
;
1499 int ndirty_node
, ndirty_dent
, ndirty_dirs
, ndirty_meta
;
1500 int nats
, sits
, fnids
;
1501 int total_count
, utilization
;
1502 int bg_gc
, inline_inode
, inline_dir
, inmem_pages
;
1503 unsigned int valid_count
, valid_node_count
, valid_inode_count
;
1504 unsigned int bimodal
, avg_vblocks
;
1505 int util_free
, util_valid
, util_invalid
;
1506 int rsvd_segs
, overp_segs
;
1507 int dirty_count
, node_pages
, meta_pages
;
1508 int prefree_count
, call_count
, cp_count
;
1509 int tot_segs
, node_segs
, data_segs
, free_segs
, free_secs
;
1510 int tot_blks
, data_blks
, node_blks
;
1511 int curseg
[NR_CURSEG_TYPE
];
1512 int cursec
[NR_CURSEG_TYPE
];
1513 int curzone
[NR_CURSEG_TYPE
];
1515 unsigned int segment_count
[2];
1516 unsigned int block_count
[2];
1517 unsigned base_mem
, cache_mem
;
1520 static inline struct f2fs_stat_info
*F2FS_STAT(struct f2fs_sb_info
*sbi
)
1522 return (struct f2fs_stat_info
*)sbi
->stat_info
;
1525 #define stat_inc_cp_count(si) ((si)->cp_count++)
1526 #define stat_inc_call_count(si) ((si)->call_count++)
1527 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1528 #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1529 #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
1530 #define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++)
1531 #define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++)
1532 #define stat_inc_inline_inode(inode) \
1534 if (f2fs_has_inline_data(inode)) \
1535 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
1537 #define stat_dec_inline_inode(inode) \
1539 if (f2fs_has_inline_data(inode)) \
1540 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
1542 #define stat_inc_inline_dir(inode) \
1544 if (f2fs_has_inline_dentry(inode)) \
1545 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
1547 #define stat_dec_inline_dir(inode) \
1549 if (f2fs_has_inline_dentry(inode)) \
1550 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
1552 #define stat_inc_seg_type(sbi, curseg) \
1553 ((sbi)->segment_count[(curseg)->alloc_type]++)
1554 #define stat_inc_block_count(sbi, curseg) \
1555 ((sbi)->block_count[(curseg)->alloc_type]++)
1557 #define stat_inc_seg_count(sbi, type) \
1559 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1561 if (type == SUM_TYPE_DATA) \
1567 #define stat_inc_tot_blk_count(si, blks) \
1568 (si->tot_blks += (blks))
1570 #define stat_inc_data_blk_count(sbi, blks) \
1572 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1573 stat_inc_tot_blk_count(si, blks); \
1574 si->data_blks += (blks); \
1577 #define stat_inc_node_blk_count(sbi, blks) \
1579 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1580 stat_inc_tot_blk_count(si, blks); \
1581 si->node_blks += (blks); \
1584 int f2fs_build_stats(struct f2fs_sb_info
*);
1585 void f2fs_destroy_stats(struct f2fs_sb_info
*);
1586 void __init
f2fs_create_root_stats(void);
1587 void f2fs_destroy_root_stats(void);
1589 #define stat_inc_cp_count(si)
1590 #define stat_inc_call_count(si)
1591 #define stat_inc_bggc_count(si)
1592 #define stat_inc_dirty_dir(sbi)
1593 #define stat_dec_dirty_dir(sbi)
1594 #define stat_inc_total_hit(sb)
1595 #define stat_inc_read_hit(sb)
1596 #define stat_inc_inline_inode(inode)
1597 #define stat_dec_inline_inode(inode)
1598 #define stat_inc_inline_dir(inode)
1599 #define stat_dec_inline_dir(inode)
1600 #define stat_inc_seg_type(sbi, curseg)
1601 #define stat_inc_block_count(sbi, curseg)
1602 #define stat_inc_seg_count(si, type)
1603 #define stat_inc_tot_blk_count(si, blks)
1604 #define stat_inc_data_blk_count(si, blks)
1605 #define stat_inc_node_blk_count(sbi, blks)
1607 static inline int f2fs_build_stats(struct f2fs_sb_info
*sbi
) { return 0; }
1608 static inline void f2fs_destroy_stats(struct f2fs_sb_info
*sbi
) { }
1609 static inline void __init
f2fs_create_root_stats(void) { }
1610 static inline void f2fs_destroy_root_stats(void) { }
1613 extern const struct file_operations f2fs_dir_operations
;
1614 extern const struct file_operations f2fs_file_operations
;
1615 extern const struct inode_operations f2fs_file_inode_operations
;
1616 extern const struct address_space_operations f2fs_dblock_aops
;
1617 extern const struct address_space_operations f2fs_node_aops
;
1618 extern const struct address_space_operations f2fs_meta_aops
;
1619 extern const struct inode_operations f2fs_dir_inode_operations
;
1620 extern const struct inode_operations f2fs_symlink_inode_operations
;
1621 extern const struct inode_operations f2fs_special_inode_operations
;
1626 bool f2fs_may_inline(struct inode
*);
1627 void read_inline_data(struct page
*, struct page
*);
1628 int f2fs_read_inline_data(struct inode
*, struct page
*);
1629 int f2fs_convert_inline_page(struct dnode_of_data
*, struct page
*);
1630 int f2fs_convert_inline_inode(struct inode
*);
1631 int f2fs_write_inline_data(struct inode
*, struct page
*);
1632 void truncate_inline_data(struct page
*, u64
);
1633 bool recover_inline_data(struct inode
*, struct page
*);
1634 struct f2fs_dir_entry
*find_in_inline_dir(struct inode
*, struct qstr
*,
1636 struct f2fs_dir_entry
*f2fs_parent_inline_dir(struct inode
*, struct page
**);
1637 int make_empty_inline_dir(struct inode
*inode
, struct inode
*, struct page
*);
1638 int f2fs_add_inline_entry(struct inode
*, const struct qstr
*, struct inode
*);
1639 void f2fs_delete_inline_entry(struct f2fs_dir_entry
*, struct page
*,
1640 struct inode
*, struct inode
*);
1641 bool f2fs_empty_inline_dir(struct inode
*);
1642 int f2fs_read_inline_dir(struct file
*, struct dir_context
*);