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 set_sbi_flag(sbi, SBI_NEED_FSCK); \
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 */
140 * for the list of directory inodes or gc inodes.
141 * NOTE: there are two slab users for this structure, if we add/modify/delete
142 * fields in structure for one of slab users, it may affect fields or size of
143 * other one, in this condition, it's better to split both of slab and related
147 struct list_head list
; /* list head */
148 struct inode
*inode
; /* vfs inode pointer */
151 /* for the list of blockaddresses to be discarded */
152 struct discard_entry
{
153 struct list_head list
; /* list head */
154 block_t blkaddr
; /* block address to be discarded */
155 int len
; /* # of consecutive blocks of the discard */
158 /* for the list of fsync inodes, used only during recovery */
159 struct fsync_inode_entry
{
160 struct list_head list
; /* list head */
161 struct inode
*inode
; /* vfs inode pointer */
162 block_t blkaddr
; /* block address locating the last fsync */
163 block_t last_dentry
; /* block address locating the last dentry */
164 block_t last_inode
; /* block address locating the last inode */
167 #define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
168 #define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
170 #define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
171 #define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
172 #define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
173 #define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
175 #define MAX_NAT_JENTRIES(sum) (NAT_JOURNAL_ENTRIES - nats_in_cursum(sum))
176 #define MAX_SIT_JENTRIES(sum) (SIT_JOURNAL_ENTRIES - sits_in_cursum(sum))
178 static inline int update_nats_in_cursum(struct f2fs_summary_block
*rs
, int i
)
180 int before
= nats_in_cursum(rs
);
181 rs
->n_nats
= cpu_to_le16(before
+ i
);
185 static inline int update_sits_in_cursum(struct f2fs_summary_block
*rs
, int i
)
187 int before
= sits_in_cursum(rs
);
188 rs
->n_sits
= cpu_to_le16(before
+ i
);
192 static inline bool __has_cursum_space(struct f2fs_summary_block
*sum
, int size
,
195 if (type
== NAT_JOURNAL
)
196 return size
<= MAX_NAT_JENTRIES(sum
);
197 return size
<= MAX_SIT_JENTRIES(sum
);
203 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
204 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
205 #define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
207 #define F2FS_IOCTL_MAGIC 0xf5
208 #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
209 #define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
210 #define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
211 #define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
212 #define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
214 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
216 * ioctl commands in 32 bit emulation
218 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
219 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
223 * For INODE and NODE manager
225 /* for directory operations */
226 struct f2fs_dentry_ptr
{
228 struct f2fs_dir_entry
*dentry
;
229 __u8 (*filename
)[F2FS_SLOT_LEN
];
233 static inline void make_dentry_ptr(struct f2fs_dentry_ptr
*d
,
237 struct f2fs_dentry_block
*t
= (struct f2fs_dentry_block
*)src
;
238 d
->max
= NR_DENTRY_IN_BLOCK
;
239 d
->bitmap
= &t
->dentry_bitmap
;
240 d
->dentry
= t
->dentry
;
241 d
->filename
= t
->filename
;
243 struct f2fs_inline_dentry
*t
= (struct f2fs_inline_dentry
*)src
;
244 d
->max
= NR_INLINE_DENTRY
;
245 d
->bitmap
= &t
->dentry_bitmap
;
246 d
->dentry
= t
->dentry
;
247 d
->filename
= t
->filename
;
252 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
253 * as its node offset to distinguish from index node blocks.
254 * But some bits are used to mark the node block.
256 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
259 ALLOC_NODE
, /* allocate a new node page if needed */
260 LOOKUP_NODE
, /* look up a node without readahead */
262 * look up a node with readahead called
267 #define F2FS_LINK_MAX 32000 /* maximum link count per file */
269 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
271 /* for in-memory extent cache entry */
272 #define F2FS_MIN_EXTENT_LEN 16 /* minimum extent length */
275 rwlock_t ext_lock
; /* rwlock for consistency */
276 unsigned int fofs
; /* start offset in a file */
277 u32 blk_addr
; /* start block address of the extent */
278 unsigned int len
; /* length of the extent */
282 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
284 #define FADVISE_COLD_BIT 0x01
285 #define FADVISE_LOST_PINO_BIT 0x02
287 #define DEF_DIR_LEVEL 0
289 struct f2fs_inode_info
{
290 struct inode vfs_inode
; /* serve a vfs inode */
291 unsigned long i_flags
; /* keep an inode flags for ioctl */
292 unsigned char i_advise
; /* use to give file attribute hints */
293 unsigned char i_dir_level
; /* use for dentry level for large dir */
294 unsigned int i_current_depth
; /* use only in directory structure */
295 unsigned int i_pino
; /* parent inode number */
296 umode_t i_acl_mode
; /* keep file acl mode temporarily */
298 /* Use below internally in f2fs*/
299 unsigned long flags
; /* use to pass per-file flags */
300 struct rw_semaphore i_sem
; /* protect fi info */
301 atomic_t dirty_pages
; /* # of dirty pages */
302 f2fs_hash_t chash
; /* hash value of given file name */
303 unsigned int clevel
; /* maximum level of given file name */
304 nid_t i_xattr_nid
; /* node id that contains xattrs */
305 unsigned long long xattr_ver
; /* cp version of xattr modification */
306 struct extent_info ext
; /* in-memory extent cache entry */
307 struct inode_entry
*dirty_dir
; /* the pointer of dirty dir */
309 struct radix_tree_root inmem_root
; /* radix tree for inmem pages */
310 struct list_head inmem_pages
; /* inmemory pages managed by f2fs */
311 struct mutex inmem_lock
; /* lock for inmemory pages */
314 static inline void get_extent_info(struct extent_info
*ext
,
315 struct f2fs_extent i_ext
)
317 write_lock(&ext
->ext_lock
);
318 ext
->fofs
= le32_to_cpu(i_ext
.fofs
);
319 ext
->blk_addr
= le32_to_cpu(i_ext
.blk_addr
);
320 ext
->len
= le32_to_cpu(i_ext
.len
);
321 write_unlock(&ext
->ext_lock
);
324 static inline void set_raw_extent(struct extent_info
*ext
,
325 struct f2fs_extent
*i_ext
)
327 read_lock(&ext
->ext_lock
);
328 i_ext
->fofs
= cpu_to_le32(ext
->fofs
);
329 i_ext
->blk_addr
= cpu_to_le32(ext
->blk_addr
);
330 i_ext
->len
= cpu_to_le32(ext
->len
);
331 read_unlock(&ext
->ext_lock
);
334 struct f2fs_nm_info
{
335 block_t nat_blkaddr
; /* base disk address of NAT */
336 nid_t max_nid
; /* maximum possible node ids */
337 nid_t available_nids
; /* maximum available node ids */
338 nid_t next_scan_nid
; /* the next nid to be scanned */
339 unsigned int ram_thresh
; /* control the memory footprint */
341 /* NAT cache management */
342 struct radix_tree_root nat_root
;/* root of the nat entry cache */
343 struct radix_tree_root nat_set_root
;/* root of the nat set cache */
344 struct rw_semaphore nat_tree_lock
; /* protect nat_tree_lock */
345 struct list_head nat_entries
; /* cached nat entry list (clean) */
346 unsigned int nat_cnt
; /* the # of cached nat entries */
347 unsigned int dirty_nat_cnt
; /* total num of nat entries in set */
349 /* free node ids management */
350 struct radix_tree_root free_nid_root
;/* root of the free_nid cache */
351 struct list_head free_nid_list
; /* a list for free nids */
352 spinlock_t free_nid_list_lock
; /* protect free nid list */
353 unsigned int fcnt
; /* the number of free node id */
354 struct mutex build_lock
; /* lock for build free nids */
357 char *nat_bitmap
; /* NAT bitmap pointer */
358 int bitmap_size
; /* bitmap size */
362 * this structure is used as one of function parameters.
363 * all the information are dedicated to a given direct node block determined
364 * by the data offset in a file.
366 struct dnode_of_data
{
367 struct inode
*inode
; /* vfs inode pointer */
368 struct page
*inode_page
; /* its inode page, NULL is possible */
369 struct page
*node_page
; /* cached direct node page */
370 nid_t nid
; /* node id of the direct node block */
371 unsigned int ofs_in_node
; /* data offset in the node page */
372 bool inode_page_locked
; /* inode page is locked or not */
373 block_t data_blkaddr
; /* block address of the node block */
376 static inline void set_new_dnode(struct dnode_of_data
*dn
, struct inode
*inode
,
377 struct page
*ipage
, struct page
*npage
, nid_t nid
)
379 memset(dn
, 0, sizeof(*dn
));
381 dn
->inode_page
= ipage
;
382 dn
->node_page
= npage
;
389 * By default, there are 6 active log areas across the whole main area.
390 * When considering hot and cold data separation to reduce cleaning overhead,
391 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
393 * In the current design, you should not change the numbers intentionally.
394 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
395 * logs individually according to the underlying devices. (default: 6)
396 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
397 * data and 8 for node logs.
399 #define NR_CURSEG_DATA_TYPE (3)
400 #define NR_CURSEG_NODE_TYPE (3)
401 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
404 CURSEG_HOT_DATA
= 0, /* directory entry blocks */
405 CURSEG_WARM_DATA
, /* data blocks */
406 CURSEG_COLD_DATA
, /* multimedia or GCed data blocks */
407 CURSEG_HOT_NODE
, /* direct node blocks of directory files */
408 CURSEG_WARM_NODE
, /* direct node blocks of normal files */
409 CURSEG_COLD_NODE
, /* indirect node blocks */
411 CURSEG_DIRECT_IO
, /* to use for the direct IO path */
415 struct completion wait
;
416 struct llist_node llnode
;
420 struct flush_cmd_control
{
421 struct task_struct
*f2fs_issue_flush
; /* flush thread */
422 wait_queue_head_t flush_wait_queue
; /* waiting queue for wake-up */
423 struct llist_head issue_list
; /* list for command issue */
424 struct llist_node
*dispatch_list
; /* list for command dispatch */
427 struct f2fs_sm_info
{
428 struct sit_info
*sit_info
; /* whole segment information */
429 struct free_segmap_info
*free_info
; /* free segment information */
430 struct dirty_seglist_info
*dirty_info
; /* dirty segment information */
431 struct curseg_info
*curseg_array
; /* active segment information */
433 block_t seg0_blkaddr
; /* block address of 0'th segment */
434 block_t main_blkaddr
; /* start block address of main area */
435 block_t ssa_blkaddr
; /* start block address of SSA area */
437 unsigned int segment_count
; /* total # of segments */
438 unsigned int main_segments
; /* # of segments in main area */
439 unsigned int reserved_segments
; /* # of reserved segments */
440 unsigned int ovp_segments
; /* # of overprovision segments */
442 /* a threshold to reclaim prefree segments */
443 unsigned int rec_prefree_segments
;
445 /* for small discard management */
446 struct list_head discard_list
; /* 4KB discard list */
447 int nr_discards
; /* # of discards in the list */
448 int max_discards
; /* max. discards to be issued */
450 struct list_head sit_entry_set
; /* sit entry set list */
452 unsigned int ipu_policy
; /* in-place-update policy */
453 unsigned int min_ipu_util
; /* in-place-update threshold */
454 unsigned int min_fsync_blocks
; /* threshold for fsync */
456 /* for flush command control */
457 struct flush_cmd_control
*cmd_control_info
;
465 * COUNT_TYPE for monitoring
467 * f2fs monitors the number of several block types such as on-writeback,
468 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
480 * The below are the page types of bios used in submit_bio().
481 * The available types are:
482 * DATA User data pages. It operates as async mode.
483 * NODE Node pages. It operates as async mode.
484 * META FS metadata pages such as SIT, NAT, CP.
485 * NR_PAGE_TYPE The number of page types.
486 * META_FLUSH Make sure the previous pages are written
487 * with waiting the bio's completion
488 * ... Only can be used with META.
490 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
499 struct f2fs_io_info
{
500 enum page_type type
; /* contains DATA/NODE/META/META_FLUSH */
501 int rw
; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
502 block_t blk_addr
; /* block address to be written */
505 #define is_read_io(rw) (((rw) & 1) == READ)
506 struct f2fs_bio_info
{
507 struct f2fs_sb_info
*sbi
; /* f2fs superblock */
508 struct bio
*bio
; /* bios to merge */
509 sector_t last_block_in_bio
; /* last block number */
510 struct f2fs_io_info fio
; /* store buffered io info. */
511 struct rw_semaphore io_rwsem
; /* blocking op for bio */
514 /* for inner inode cache management */
515 struct inode_management
{
516 struct radix_tree_root ino_root
; /* ino entry array */
517 spinlock_t ino_lock
; /* for ino entry lock */
518 struct list_head ino_list
; /* inode list head */
519 unsigned long ino_num
; /* number of entries */
522 /* For s_flag in struct f2fs_sb_info */
524 SBI_IS_DIRTY
, /* dirty flag for checkpoint */
525 SBI_IS_CLOSE
, /* specify unmounting */
526 SBI_NEED_FSCK
, /* need fsck.f2fs to fix */
527 SBI_POR_DOING
, /* recovery is doing or not */
530 struct f2fs_sb_info
{
531 struct super_block
*sb
; /* pointer to VFS super block */
532 struct proc_dir_entry
*s_proc
; /* proc entry */
533 struct buffer_head
*raw_super_buf
; /* buffer head of raw sb */
534 struct f2fs_super_block
*raw_super
; /* raw super block pointer */
535 int s_flag
; /* flags for sbi */
537 /* for node-related operations */
538 struct f2fs_nm_info
*nm_info
; /* node manager */
539 struct inode
*node_inode
; /* cache node blocks */
541 /* for segment-related operations */
542 struct f2fs_sm_info
*sm_info
; /* segment manager */
544 /* for bio operations */
545 struct f2fs_bio_info read_io
; /* for read bios */
546 struct f2fs_bio_info write_io
[NR_PAGE_TYPE
]; /* for write bios */
549 struct f2fs_checkpoint
*ckpt
; /* raw checkpoint pointer */
550 struct inode
*meta_inode
; /* cache meta blocks */
551 struct mutex cp_mutex
; /* checkpoint procedure lock */
552 struct rw_semaphore cp_rwsem
; /* blocking FS operations */
553 struct rw_semaphore node_write
; /* locking node writes */
554 struct mutex writepages
; /* mutex for writepages() */
555 wait_queue_head_t cp_wait
;
557 struct inode_management im
[MAX_INO_ENTRY
]; /* manage inode cache */
559 /* for orphan inode, use 0'th array */
560 unsigned int max_orphans
; /* max orphan inodes */
562 /* for directory inode management */
563 struct list_head dir_inode_list
; /* dir inode list */
564 spinlock_t dir_inode_lock
; /* for dir inode list lock */
566 /* basic filesystem units */
567 unsigned int log_sectors_per_block
; /* log2 sectors per block */
568 unsigned int log_blocksize
; /* log2 block size */
569 unsigned int blocksize
; /* block size */
570 unsigned int root_ino_num
; /* root inode number*/
571 unsigned int node_ino_num
; /* node inode number*/
572 unsigned int meta_ino_num
; /* meta inode number*/
573 unsigned int log_blocks_per_seg
; /* log2 blocks per segment */
574 unsigned int blocks_per_seg
; /* blocks per segment */
575 unsigned int segs_per_sec
; /* segments per section */
576 unsigned int secs_per_zone
; /* sections per zone */
577 unsigned int total_sections
; /* total section count */
578 unsigned int total_node_count
; /* total node block count */
579 unsigned int total_valid_node_count
; /* valid node block count */
580 unsigned int total_valid_inode_count
; /* valid inode count */
581 int active_logs
; /* # of active logs */
582 int dir_level
; /* directory level */
584 block_t user_block_count
; /* # of user blocks */
585 block_t total_valid_block_count
; /* # of valid blocks */
586 block_t alloc_valid_block_count
; /* # of allocated blocks */
587 block_t last_valid_block_count
; /* for recovery */
588 u32 s_next_generation
; /* for NFS support */
589 atomic_t nr_pages
[NR_COUNT_TYPE
]; /* # of pages, see count_type */
591 struct f2fs_mount_info mount_opt
; /* mount options */
593 /* for cleaning operations */
594 struct mutex gc_mutex
; /* mutex for GC */
595 struct f2fs_gc_kthread
*gc_thread
; /* GC thread */
596 unsigned int cur_victim_sec
; /* current victim section num */
598 /* maximum # of trials to find a victim segment for SSR and GC */
599 unsigned int max_victim_search
;
602 * for stat information.
603 * one is for the LFS mode, and the other is for the SSR mode.
605 #ifdef CONFIG_F2FS_STAT_FS
606 struct f2fs_stat_info
*stat_info
; /* FS status information */
607 unsigned int segment_count
[2]; /* # of allocated segments */
608 unsigned int block_count
[2]; /* # of allocated blocks */
609 atomic_t inplace_count
; /* # of inplace update */
610 int total_hit_ext
, read_hit_ext
; /* extent cache hit ratio */
611 atomic_t inline_inode
; /* # of inline_data inodes */
612 atomic_t inline_dir
; /* # of inline_dentry inodes */
613 int bg_gc
; /* background gc calls */
614 unsigned int n_dirty_dirs
; /* # of dir inodes */
616 unsigned int last_victim
[2]; /* last victim segment # */
617 spinlock_t stat_lock
; /* lock for stat operations */
619 /* For sysfs suppport */
620 struct kobject s_kobj
;
621 struct completion s_kobj_unregister
;
627 static inline struct f2fs_inode_info
*F2FS_I(struct inode
*inode
)
629 return container_of(inode
, struct f2fs_inode_info
, vfs_inode
);
632 static inline struct f2fs_sb_info
*F2FS_SB(struct super_block
*sb
)
634 return sb
->s_fs_info
;
637 static inline struct f2fs_sb_info
*F2FS_I_SB(struct inode
*inode
)
639 return F2FS_SB(inode
->i_sb
);
642 static inline struct f2fs_sb_info
*F2FS_M_SB(struct address_space
*mapping
)
644 return F2FS_I_SB(mapping
->host
);
647 static inline struct f2fs_sb_info
*F2FS_P_SB(struct page
*page
)
649 return F2FS_M_SB(page
->mapping
);
652 static inline struct f2fs_super_block
*F2FS_RAW_SUPER(struct f2fs_sb_info
*sbi
)
654 return (struct f2fs_super_block
*)(sbi
->raw_super
);
657 static inline struct f2fs_checkpoint
*F2FS_CKPT(struct f2fs_sb_info
*sbi
)
659 return (struct f2fs_checkpoint
*)(sbi
->ckpt
);
662 static inline struct f2fs_node
*F2FS_NODE(struct page
*page
)
664 return (struct f2fs_node
*)page_address(page
);
667 static inline struct f2fs_inode
*F2FS_INODE(struct page
*page
)
669 return &((struct f2fs_node
*)page_address(page
))->i
;
672 static inline struct f2fs_nm_info
*NM_I(struct f2fs_sb_info
*sbi
)
674 return (struct f2fs_nm_info
*)(sbi
->nm_info
);
677 static inline struct f2fs_sm_info
*SM_I(struct f2fs_sb_info
*sbi
)
679 return (struct f2fs_sm_info
*)(sbi
->sm_info
);
682 static inline struct sit_info
*SIT_I(struct f2fs_sb_info
*sbi
)
684 return (struct sit_info
*)(SM_I(sbi
)->sit_info
);
687 static inline struct free_segmap_info
*FREE_I(struct f2fs_sb_info
*sbi
)
689 return (struct free_segmap_info
*)(SM_I(sbi
)->free_info
);
692 static inline struct dirty_seglist_info
*DIRTY_I(struct f2fs_sb_info
*sbi
)
694 return (struct dirty_seglist_info
*)(SM_I(sbi
)->dirty_info
);
697 static inline struct address_space
*META_MAPPING(struct f2fs_sb_info
*sbi
)
699 return sbi
->meta_inode
->i_mapping
;
702 static inline struct address_space
*NODE_MAPPING(struct f2fs_sb_info
*sbi
)
704 return sbi
->node_inode
->i_mapping
;
707 static inline bool is_sbi_flag_set(struct f2fs_sb_info
*sbi
, unsigned int type
)
709 return sbi
->s_flag
& (0x01 << type
);
712 static inline void set_sbi_flag(struct f2fs_sb_info
*sbi
, unsigned int type
)
714 sbi
->s_flag
|= (0x01 << type
);
717 static inline void clear_sbi_flag(struct f2fs_sb_info
*sbi
, unsigned int type
)
719 sbi
->s_flag
&= ~(0x01 << type
);
722 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint
*cp
)
724 return le64_to_cpu(cp
->checkpoint_ver
);
727 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
729 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
730 return ckpt_flags
& f
;
733 static inline void set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
735 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
737 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
740 static inline void clear_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
742 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
744 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
747 static inline void f2fs_lock_op(struct f2fs_sb_info
*sbi
)
749 down_read(&sbi
->cp_rwsem
);
752 static inline void f2fs_unlock_op(struct f2fs_sb_info
*sbi
)
754 up_read(&sbi
->cp_rwsem
);
757 static inline void f2fs_lock_all(struct f2fs_sb_info
*sbi
)
759 f2fs_down_write(&sbi
->cp_rwsem
, &sbi
->cp_mutex
);
762 static inline void f2fs_unlock_all(struct f2fs_sb_info
*sbi
)
764 up_write(&sbi
->cp_rwsem
);
768 * Check whether the given nid is within node id range.
770 static inline int check_nid_range(struct f2fs_sb_info
*sbi
, nid_t nid
)
772 if (unlikely(nid
< F2FS_ROOT_INO(sbi
)))
774 if (unlikely(nid
>= NM_I(sbi
)->max_nid
))
779 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
782 * Check whether the inode has blocks or not
784 static inline int F2FS_HAS_BLOCKS(struct inode
*inode
)
786 if (F2FS_I(inode
)->i_xattr_nid
)
787 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
+ 1;
789 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
;
792 static inline bool f2fs_has_xattr_block(unsigned int ofs
)
794 return ofs
== XATTR_NODE_OFFSET
;
797 static inline bool inc_valid_block_count(struct f2fs_sb_info
*sbi
,
798 struct inode
*inode
, blkcnt_t count
)
800 block_t valid_block_count
;
802 spin_lock(&sbi
->stat_lock
);
804 sbi
->total_valid_block_count
+ (block_t
)count
;
805 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
806 spin_unlock(&sbi
->stat_lock
);
809 inode
->i_blocks
+= count
;
810 sbi
->total_valid_block_count
= valid_block_count
;
811 sbi
->alloc_valid_block_count
+= (block_t
)count
;
812 spin_unlock(&sbi
->stat_lock
);
816 static inline void dec_valid_block_count(struct f2fs_sb_info
*sbi
,
820 spin_lock(&sbi
->stat_lock
);
821 f2fs_bug_on(sbi
, sbi
->total_valid_block_count
< (block_t
) count
);
822 f2fs_bug_on(sbi
, inode
->i_blocks
< count
);
823 inode
->i_blocks
-= count
;
824 sbi
->total_valid_block_count
-= (block_t
)count
;
825 spin_unlock(&sbi
->stat_lock
);
828 static inline void inc_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
830 atomic_inc(&sbi
->nr_pages
[count_type
]);
831 set_sbi_flag(sbi
, SBI_IS_DIRTY
);
834 static inline void inode_inc_dirty_pages(struct inode
*inode
)
836 atomic_inc(&F2FS_I(inode
)->dirty_pages
);
837 if (S_ISDIR(inode
->i_mode
))
838 inc_page_count(F2FS_I_SB(inode
), F2FS_DIRTY_DENTS
);
841 static inline void dec_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
843 atomic_dec(&sbi
->nr_pages
[count_type
]);
846 static inline void inode_dec_dirty_pages(struct inode
*inode
)
848 if (!S_ISDIR(inode
->i_mode
) && !S_ISREG(inode
->i_mode
))
851 atomic_dec(&F2FS_I(inode
)->dirty_pages
);
853 if (S_ISDIR(inode
->i_mode
))
854 dec_page_count(F2FS_I_SB(inode
), F2FS_DIRTY_DENTS
);
857 static inline int get_pages(struct f2fs_sb_info
*sbi
, int count_type
)
859 return atomic_read(&sbi
->nr_pages
[count_type
]);
862 static inline int get_dirty_pages(struct inode
*inode
)
864 return atomic_read(&F2FS_I(inode
)->dirty_pages
);
867 static inline int get_blocktype_secs(struct f2fs_sb_info
*sbi
, int block_type
)
869 unsigned int pages_per_sec
= sbi
->segs_per_sec
*
870 (1 << sbi
->log_blocks_per_seg
);
871 return ((get_pages(sbi
, block_type
) + pages_per_sec
- 1)
872 >> sbi
->log_blocks_per_seg
) / sbi
->segs_per_sec
;
875 static inline block_t
valid_user_blocks(struct f2fs_sb_info
*sbi
)
877 return sbi
->total_valid_block_count
;
880 static inline unsigned long __bitmap_size(struct f2fs_sb_info
*sbi
, int flag
)
882 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
884 /* return NAT or SIT bitmap */
885 if (flag
== NAT_BITMAP
)
886 return le32_to_cpu(ckpt
->nat_ver_bitmap_bytesize
);
887 else if (flag
== SIT_BITMAP
)
888 return le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
);
893 static inline void *__bitmap_ptr(struct f2fs_sb_info
*sbi
, int flag
)
895 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
898 if (le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_payload
) > 0) {
899 if (flag
== NAT_BITMAP
)
900 return &ckpt
->sit_nat_version_bitmap
;
902 return (unsigned char *)ckpt
+ F2FS_BLKSIZE
;
904 offset
= (flag
== NAT_BITMAP
) ?
905 le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
) : 0;
906 return &ckpt
->sit_nat_version_bitmap
+ offset
;
910 static inline block_t
__start_cp_addr(struct f2fs_sb_info
*sbi
)
913 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
914 unsigned long long ckpt_version
= cur_cp_version(ckpt
);
916 start_addr
= le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_blkaddr
);
919 * odd numbered checkpoint should at cp segment 0
920 * and even segment must be at cp segment 1
922 if (!(ckpt_version
& 1))
923 start_addr
+= sbi
->blocks_per_seg
;
928 static inline block_t
__start_sum_addr(struct f2fs_sb_info
*sbi
)
930 return le32_to_cpu(F2FS_CKPT(sbi
)->cp_pack_start_sum
);
933 static inline bool inc_valid_node_count(struct f2fs_sb_info
*sbi
,
936 block_t valid_block_count
;
937 unsigned int valid_node_count
;
939 spin_lock(&sbi
->stat_lock
);
941 valid_block_count
= sbi
->total_valid_block_count
+ 1;
942 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
943 spin_unlock(&sbi
->stat_lock
);
947 valid_node_count
= sbi
->total_valid_node_count
+ 1;
948 if (unlikely(valid_node_count
> sbi
->total_node_count
)) {
949 spin_unlock(&sbi
->stat_lock
);
956 sbi
->alloc_valid_block_count
++;
957 sbi
->total_valid_node_count
++;
958 sbi
->total_valid_block_count
++;
959 spin_unlock(&sbi
->stat_lock
);
964 static inline void dec_valid_node_count(struct f2fs_sb_info
*sbi
,
967 spin_lock(&sbi
->stat_lock
);
969 f2fs_bug_on(sbi
, !sbi
->total_valid_block_count
);
970 f2fs_bug_on(sbi
, !sbi
->total_valid_node_count
);
971 f2fs_bug_on(sbi
, !inode
->i_blocks
);
974 sbi
->total_valid_node_count
--;
975 sbi
->total_valid_block_count
--;
977 spin_unlock(&sbi
->stat_lock
);
980 static inline unsigned int valid_node_count(struct f2fs_sb_info
*sbi
)
982 return sbi
->total_valid_node_count
;
985 static inline void inc_valid_inode_count(struct f2fs_sb_info
*sbi
)
987 spin_lock(&sbi
->stat_lock
);
988 f2fs_bug_on(sbi
, sbi
->total_valid_inode_count
== sbi
->total_node_count
);
989 sbi
->total_valid_inode_count
++;
990 spin_unlock(&sbi
->stat_lock
);
993 static inline void dec_valid_inode_count(struct f2fs_sb_info
*sbi
)
995 spin_lock(&sbi
->stat_lock
);
996 f2fs_bug_on(sbi
, !sbi
->total_valid_inode_count
);
997 sbi
->total_valid_inode_count
--;
998 spin_unlock(&sbi
->stat_lock
);
1001 static inline unsigned int valid_inode_count(struct f2fs_sb_info
*sbi
)
1003 return sbi
->total_valid_inode_count
;
1006 static inline void f2fs_put_page(struct page
*page
, int unlock
)
1012 f2fs_bug_on(F2FS_P_SB(page
), !PageLocked(page
));
1015 page_cache_release(page
);
1018 static inline void f2fs_put_dnode(struct dnode_of_data
*dn
)
1021 f2fs_put_page(dn
->node_page
, 1);
1022 if (dn
->inode_page
&& dn
->node_page
!= dn
->inode_page
)
1023 f2fs_put_page(dn
->inode_page
, 0);
1024 dn
->node_page
= NULL
;
1025 dn
->inode_page
= NULL
;
1028 static inline struct kmem_cache
*f2fs_kmem_cache_create(const char *name
,
1031 return kmem_cache_create(name
, size
, 0, SLAB_RECLAIM_ACCOUNT
, NULL
);
1034 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache
*cachep
,
1039 entry
= kmem_cache_alloc(cachep
, flags
);
1048 static inline void f2fs_radix_tree_insert(struct radix_tree_root
*root
,
1049 unsigned long index
, void *item
)
1051 while (radix_tree_insert(root
, index
, item
))
1055 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1057 static inline bool IS_INODE(struct page
*page
)
1059 struct f2fs_node
*p
= F2FS_NODE(page
);
1060 return RAW_IS_INODE(p
);
1063 static inline __le32
*blkaddr_in_node(struct f2fs_node
*node
)
1065 return RAW_IS_INODE(node
) ? node
->i
.i_addr
: node
->dn
.addr
;
1068 static inline block_t
datablock_addr(struct page
*node_page
,
1069 unsigned int offset
)
1071 struct f2fs_node
*raw_node
;
1073 raw_node
= F2FS_NODE(node_page
);
1074 addr_array
= blkaddr_in_node(raw_node
);
1075 return le32_to_cpu(addr_array
[offset
]);
1078 static inline int f2fs_test_bit(unsigned int nr
, char *addr
)
1083 mask
= 1 << (7 - (nr
& 0x07));
1084 return mask
& *addr
;
1087 static inline int f2fs_test_and_set_bit(unsigned int nr
, char *addr
)
1093 mask
= 1 << (7 - (nr
& 0x07));
1099 static inline int f2fs_test_and_clear_bit(unsigned int nr
, char *addr
)
1105 mask
= 1 << (7 - (nr
& 0x07));
1111 static inline void f2fs_change_bit(unsigned int nr
, char *addr
)
1116 mask
= 1 << (7 - (nr
& 0x07));
1120 /* used for f2fs_inode_info->flags */
1122 FI_NEW_INODE
, /* indicate newly allocated inode */
1123 FI_DIRTY_INODE
, /* indicate inode is dirty or not */
1124 FI_DIRTY_DIR
, /* indicate directory has dirty pages */
1125 FI_INC_LINK
, /* need to increment i_nlink */
1126 FI_ACL_MODE
, /* indicate acl mode */
1127 FI_NO_ALLOC
, /* should not allocate any blocks */
1128 FI_UPDATE_DIR
, /* should update inode block for consistency */
1129 FI_DELAY_IPUT
, /* used for the recovery */
1130 FI_NO_EXTENT
, /* not to use the extent cache */
1131 FI_INLINE_XATTR
, /* used for inline xattr */
1132 FI_INLINE_DATA
, /* used for inline data*/
1133 FI_INLINE_DENTRY
, /* used for inline dentry */
1134 FI_APPEND_WRITE
, /* inode has appended data */
1135 FI_UPDATE_WRITE
, /* inode has in-place-update data */
1136 FI_NEED_IPU
, /* used for ipu per file */
1137 FI_ATOMIC_FILE
, /* indicate atomic file */
1138 FI_VOLATILE_FILE
, /* indicate volatile file */
1139 FI_DROP_CACHE
, /* drop dirty page cache */
1140 FI_DATA_EXIST
, /* indicate data exists */
1143 static inline void set_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1145 if (!test_bit(flag
, &fi
->flags
))
1146 set_bit(flag
, &fi
->flags
);
1149 static inline int is_inode_flag_set(struct f2fs_inode_info
*fi
, int flag
)
1151 return test_bit(flag
, &fi
->flags
);
1154 static inline void clear_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1156 if (test_bit(flag
, &fi
->flags
))
1157 clear_bit(flag
, &fi
->flags
);
1160 static inline void set_acl_inode(struct f2fs_inode_info
*fi
, umode_t mode
)
1162 fi
->i_acl_mode
= mode
;
1163 set_inode_flag(fi
, FI_ACL_MODE
);
1166 static inline void get_inline_info(struct f2fs_inode_info
*fi
,
1167 struct f2fs_inode
*ri
)
1169 if (ri
->i_inline
& F2FS_INLINE_XATTR
)
1170 set_inode_flag(fi
, FI_INLINE_XATTR
);
1171 if (ri
->i_inline
& F2FS_INLINE_DATA
)
1172 set_inode_flag(fi
, FI_INLINE_DATA
);
1173 if (ri
->i_inline
& F2FS_INLINE_DENTRY
)
1174 set_inode_flag(fi
, FI_INLINE_DENTRY
);
1175 if (ri
->i_inline
& F2FS_DATA_EXIST
)
1176 set_inode_flag(fi
, FI_DATA_EXIST
);
1179 static inline void set_raw_inline(struct f2fs_inode_info
*fi
,
1180 struct f2fs_inode
*ri
)
1184 if (is_inode_flag_set(fi
, FI_INLINE_XATTR
))
1185 ri
->i_inline
|= F2FS_INLINE_XATTR
;
1186 if (is_inode_flag_set(fi
, FI_INLINE_DATA
))
1187 ri
->i_inline
|= F2FS_INLINE_DATA
;
1188 if (is_inode_flag_set(fi
, FI_INLINE_DENTRY
))
1189 ri
->i_inline
|= F2FS_INLINE_DENTRY
;
1190 if (is_inode_flag_set(fi
, FI_DATA_EXIST
))
1191 ri
->i_inline
|= F2FS_DATA_EXIST
;
1194 static inline int f2fs_has_inline_xattr(struct inode
*inode
)
1196 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_XATTR
);
1199 static inline unsigned int addrs_per_inode(struct f2fs_inode_info
*fi
)
1201 if (f2fs_has_inline_xattr(&fi
->vfs_inode
))
1202 return DEF_ADDRS_PER_INODE
- F2FS_INLINE_XATTR_ADDRS
;
1203 return DEF_ADDRS_PER_INODE
;
1206 static inline void *inline_xattr_addr(struct page
*page
)
1208 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1209 return (void *)&(ri
->i_addr
[DEF_ADDRS_PER_INODE
-
1210 F2FS_INLINE_XATTR_ADDRS
]);
1213 static inline int inline_xattr_size(struct inode
*inode
)
1215 if (f2fs_has_inline_xattr(inode
))
1216 return F2FS_INLINE_XATTR_ADDRS
<< 2;
1221 static inline int f2fs_has_inline_data(struct inode
*inode
)
1223 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DATA
);
1226 static inline void f2fs_clear_inline_inode(struct inode
*inode
)
1228 clear_inode_flag(F2FS_I(inode
), FI_INLINE_DATA
);
1229 clear_inode_flag(F2FS_I(inode
), FI_DATA_EXIST
);
1232 static inline int f2fs_exist_data(struct inode
*inode
)
1234 return is_inode_flag_set(F2FS_I(inode
), FI_DATA_EXIST
);
1237 static inline bool f2fs_is_atomic_file(struct inode
*inode
)
1239 return is_inode_flag_set(F2FS_I(inode
), FI_ATOMIC_FILE
);
1242 static inline bool f2fs_is_volatile_file(struct inode
*inode
)
1244 return is_inode_flag_set(F2FS_I(inode
), FI_VOLATILE_FILE
);
1247 static inline bool f2fs_is_drop_cache(struct inode
*inode
)
1249 return is_inode_flag_set(F2FS_I(inode
), FI_DROP_CACHE
);
1252 static inline void *inline_data_addr(struct page
*page
)
1254 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1255 return (void *)&(ri
->i_addr
[1]);
1258 static inline int f2fs_has_inline_dentry(struct inode
*inode
)
1260 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DENTRY
);
1263 static inline void *inline_dentry_addr(struct page
*page
)
1265 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1266 return (void *)&(ri
->i_addr
[1]);
1269 static inline void f2fs_dentry_kunmap(struct inode
*dir
, struct page
*page
)
1271 if (!f2fs_has_inline_dentry(dir
))
1275 static inline int f2fs_readonly(struct super_block
*sb
)
1277 return sb
->s_flags
& MS_RDONLY
;
1280 static inline bool f2fs_cp_error(struct f2fs_sb_info
*sbi
)
1282 return is_set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1285 static inline void f2fs_stop_checkpoint(struct f2fs_sb_info
*sbi
)
1287 set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1288 sbi
->sb
->s_flags
|= MS_RDONLY
;
1291 #define get_inode_mode(i) \
1292 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1293 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1295 /* get offset of first page in next direct node */
1296 #define PGOFS_OF_NEXT_DNODE(pgofs, fi) \
1297 ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \
1298 (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \
1299 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi))
1304 int f2fs_sync_file(struct file
*, loff_t
, loff_t
, int);
1305 void truncate_data_blocks(struct dnode_of_data
*);
1306 int truncate_blocks(struct inode
*, u64
, bool);
1307 void f2fs_truncate(struct inode
*);
1308 int f2fs_getattr(struct vfsmount
*, struct dentry
*, struct kstat
*);
1309 int f2fs_setattr(struct dentry
*, struct iattr
*);
1310 int truncate_hole(struct inode
*, pgoff_t
, pgoff_t
);
1311 int truncate_data_blocks_range(struct dnode_of_data
*, int);
1312 long f2fs_ioctl(struct file
*, unsigned int, unsigned long);
1313 long f2fs_compat_ioctl(struct file
*, unsigned int, unsigned long);
1318 void f2fs_set_inode_flags(struct inode
*);
1319 struct inode
*f2fs_iget(struct super_block
*, unsigned long);
1320 int try_to_free_nats(struct f2fs_sb_info
*, int);
1321 void update_inode(struct inode
*, struct page
*);
1322 void update_inode_page(struct inode
*);
1323 int f2fs_write_inode(struct inode
*, struct writeback_control
*);
1324 void f2fs_evict_inode(struct inode
*);
1325 void handle_failed_inode(struct inode
*);
1330 struct dentry
*f2fs_get_parent(struct dentry
*child
);
1335 extern unsigned char f2fs_filetype_table
[F2FS_FT_MAX
];
1336 void set_de_type(struct f2fs_dir_entry
*, struct inode
*);
1337 struct f2fs_dir_entry
*find_target_dentry(struct qstr
*, int *,
1338 struct f2fs_dentry_ptr
*);
1339 bool f2fs_fill_dentries(struct dir_context
*, struct f2fs_dentry_ptr
*,
1341 void do_make_empty_dir(struct inode
*, struct inode
*,
1342 struct f2fs_dentry_ptr
*);
1343 struct page
*init_inode_metadata(struct inode
*, struct inode
*,
1344 const struct qstr
*, struct page
*);
1345 void update_parent_metadata(struct inode
*, struct inode
*, unsigned int);
1346 int room_for_filename(const void *, int, int);
1347 void f2fs_drop_nlink(struct inode
*, struct inode
*, struct page
*);
1348 struct f2fs_dir_entry
*f2fs_find_entry(struct inode
*, struct qstr
*,
1350 struct f2fs_dir_entry
*f2fs_parent_dir(struct inode
*, struct page
**);
1351 ino_t
f2fs_inode_by_name(struct inode
*, struct qstr
*);
1352 void f2fs_set_link(struct inode
*, struct f2fs_dir_entry
*,
1353 struct page
*, struct inode
*);
1354 int update_dent_inode(struct inode
*, const struct qstr
*);
1355 int __f2fs_add_link(struct inode
*, const struct qstr
*, struct inode
*);
1356 void f2fs_delete_entry(struct f2fs_dir_entry
*, struct page
*, struct inode
*,
1358 int f2fs_do_tmpfile(struct inode
*, struct inode
*);
1359 int f2fs_make_empty(struct inode
*, struct inode
*);
1360 bool f2fs_empty_dir(struct inode
*);
1362 static inline int f2fs_add_link(struct dentry
*dentry
, struct inode
*inode
)
1364 return __f2fs_add_link(dentry
->d_parent
->d_inode
, &dentry
->d_name
,
1371 int f2fs_sync_fs(struct super_block
*, int);
1372 extern __printf(3, 4)
1373 void f2fs_msg(struct super_block
*, const char *, const char *, ...);
1378 f2fs_hash_t
f2fs_dentry_hash(const struct qstr
*);
1383 struct dnode_of_data
;
1386 bool available_free_memory(struct f2fs_sb_info
*, int);
1387 bool is_checkpointed_node(struct f2fs_sb_info
*, nid_t
);
1388 bool has_fsynced_inode(struct f2fs_sb_info
*, nid_t
);
1389 bool need_inode_block_update(struct f2fs_sb_info
*, nid_t
);
1390 void get_node_info(struct f2fs_sb_info
*, nid_t
, struct node_info
*);
1391 int get_dnode_of_data(struct dnode_of_data
*, pgoff_t
, int);
1392 int truncate_inode_blocks(struct inode
*, pgoff_t
);
1393 int truncate_xattr_node(struct inode
*, struct page
*);
1394 int wait_on_node_pages_writeback(struct f2fs_sb_info
*, nid_t
);
1395 void remove_inode_page(struct inode
*);
1396 struct page
*new_inode_page(struct inode
*);
1397 struct page
*new_node_page(struct dnode_of_data
*, unsigned int, struct page
*);
1398 void ra_node_page(struct f2fs_sb_info
*, nid_t
);
1399 struct page
*get_node_page(struct f2fs_sb_info
*, pgoff_t
);
1400 struct page
*get_node_page_ra(struct page
*, int);
1401 void sync_inode_page(struct dnode_of_data
*);
1402 int sync_node_pages(struct f2fs_sb_info
*, nid_t
, struct writeback_control
*);
1403 bool alloc_nid(struct f2fs_sb_info
*, nid_t
*);
1404 void alloc_nid_done(struct f2fs_sb_info
*, nid_t
);
1405 void alloc_nid_failed(struct f2fs_sb_info
*, nid_t
);
1406 void recover_inline_xattr(struct inode
*, struct page
*);
1407 void recover_xattr_data(struct inode
*, struct page
*, block_t
);
1408 int recover_inode_page(struct f2fs_sb_info
*, struct page
*);
1409 int restore_node_summary(struct f2fs_sb_info
*, unsigned int,
1410 struct f2fs_summary_block
*);
1411 void flush_nat_entries(struct f2fs_sb_info
*);
1412 int build_node_manager(struct f2fs_sb_info
*);
1413 void destroy_node_manager(struct f2fs_sb_info
*);
1414 int __init
create_node_manager_caches(void);
1415 void destroy_node_manager_caches(void);
1420 void register_inmem_page(struct inode
*, struct page
*);
1421 void commit_inmem_pages(struct inode
*, bool);
1422 void f2fs_balance_fs(struct f2fs_sb_info
*);
1423 void f2fs_balance_fs_bg(struct f2fs_sb_info
*);
1424 int f2fs_issue_flush(struct f2fs_sb_info
*);
1425 int create_flush_cmd_control(struct f2fs_sb_info
*);
1426 void destroy_flush_cmd_control(struct f2fs_sb_info
*);
1427 void invalidate_blocks(struct f2fs_sb_info
*, block_t
);
1428 void refresh_sit_entry(struct f2fs_sb_info
*, block_t
, block_t
);
1429 void clear_prefree_segments(struct f2fs_sb_info
*);
1430 void release_discard_addrs(struct f2fs_sb_info
*);
1431 void discard_next_dnode(struct f2fs_sb_info
*, block_t
);
1432 int npages_for_summary_flush(struct f2fs_sb_info
*, bool);
1433 void allocate_new_segments(struct f2fs_sb_info
*);
1434 int f2fs_trim_fs(struct f2fs_sb_info
*, struct fstrim_range
*);
1435 struct page
*get_sum_page(struct f2fs_sb_info
*, unsigned int);
1436 void write_meta_page(struct f2fs_sb_info
*, struct page
*);
1437 void write_node_page(struct f2fs_sb_info
*, struct page
*,
1438 unsigned int, struct f2fs_io_info
*);
1439 void write_data_page(struct page
*, struct dnode_of_data
*,
1440 struct f2fs_io_info
*);
1441 void rewrite_data_page(struct page
*, struct f2fs_io_info
*);
1442 void recover_data_page(struct f2fs_sb_info
*, struct page
*,
1443 struct f2fs_summary
*, block_t
, block_t
);
1444 void allocate_data_block(struct f2fs_sb_info
*, struct page
*,
1445 block_t
, block_t
*, struct f2fs_summary
*, int);
1446 void f2fs_wait_on_page_writeback(struct page
*, enum page_type
);
1447 void write_data_summaries(struct f2fs_sb_info
*, block_t
);
1448 void write_node_summaries(struct f2fs_sb_info
*, block_t
);
1449 int lookup_journal_in_cursum(struct f2fs_summary_block
*,
1450 int, unsigned int, int);
1451 void flush_sit_entries(struct f2fs_sb_info
*, struct cp_control
*);
1452 int build_segment_manager(struct f2fs_sb_info
*);
1453 void destroy_segment_manager(struct f2fs_sb_info
*);
1454 int __init
create_segment_manager_caches(void);
1455 void destroy_segment_manager_caches(void);
1460 struct page
*grab_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1461 struct page
*get_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1462 int ra_meta_pages(struct f2fs_sb_info
*, block_t
, int, int);
1463 void ra_meta_pages_cond(struct f2fs_sb_info
*, pgoff_t
);
1464 long sync_meta_pages(struct f2fs_sb_info
*, enum page_type
, long);
1465 void add_dirty_inode(struct f2fs_sb_info
*, nid_t
, int type
);
1466 void remove_dirty_inode(struct f2fs_sb_info
*, nid_t
, int type
);
1467 void release_dirty_inode(struct f2fs_sb_info
*);
1468 bool exist_written_data(struct f2fs_sb_info
*, nid_t
, int);
1469 int acquire_orphan_inode(struct f2fs_sb_info
*);
1470 void release_orphan_inode(struct f2fs_sb_info
*);
1471 void add_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1472 void remove_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1473 void recover_orphan_inodes(struct f2fs_sb_info
*);
1474 int get_valid_checkpoint(struct f2fs_sb_info
*);
1475 void update_dirty_page(struct inode
*, struct page
*);
1476 void add_dirty_dir_inode(struct inode
*);
1477 void remove_dirty_dir_inode(struct inode
*);
1478 void sync_dirty_dir_inodes(struct f2fs_sb_info
*);
1479 void write_checkpoint(struct f2fs_sb_info
*, struct cp_control
*);
1480 void init_ino_entry_info(struct f2fs_sb_info
*);
1481 int __init
create_checkpoint_caches(void);
1482 void destroy_checkpoint_caches(void);
1487 void f2fs_submit_merged_bio(struct f2fs_sb_info
*, enum page_type
, int);
1488 int f2fs_submit_page_bio(struct f2fs_sb_info
*, struct page
*,
1489 struct f2fs_io_info
*);
1490 void f2fs_submit_page_mbio(struct f2fs_sb_info
*, struct page
*,
1491 struct f2fs_io_info
*);
1492 int reserve_new_block(struct dnode_of_data
*);
1493 int f2fs_reserve_block(struct dnode_of_data
*, pgoff_t
);
1494 void update_extent_cache(struct dnode_of_data
*);
1495 struct page
*find_data_page(struct inode
*, pgoff_t
, bool);
1496 struct page
*get_lock_data_page(struct inode
*, pgoff_t
);
1497 struct page
*get_new_data_page(struct inode
*, struct page
*, pgoff_t
, bool);
1498 int do_write_data_page(struct page
*, struct f2fs_io_info
*);
1499 int f2fs_fiemap(struct inode
*inode
, struct fiemap_extent_info
*, u64
, u64
);
1504 int start_gc_thread(struct f2fs_sb_info
*);
1505 void stop_gc_thread(struct f2fs_sb_info
*);
1506 block_t
start_bidx_of_node(unsigned int, struct f2fs_inode_info
*);
1507 int f2fs_gc(struct f2fs_sb_info
*);
1508 void build_gc_manager(struct f2fs_sb_info
*);
1513 int recover_fsync_data(struct f2fs_sb_info
*);
1514 bool space_for_roll_forward(struct f2fs_sb_info
*);
1519 #ifdef CONFIG_F2FS_STAT_FS
1520 struct f2fs_stat_info
{
1521 struct list_head stat_list
;
1522 struct f2fs_sb_info
*sbi
;
1523 int all_area_segs
, sit_area_segs
, nat_area_segs
, ssa_area_segs
;
1524 int main_area_segs
, main_area_sections
, main_area_zones
;
1525 int hit_ext
, total_ext
;
1526 int ndirty_node
, ndirty_dent
, ndirty_dirs
, ndirty_meta
;
1527 int nats
, dirty_nats
, sits
, dirty_sits
, fnids
;
1528 int total_count
, utilization
;
1529 int bg_gc
, inline_inode
, inline_dir
, inmem_pages
;
1530 unsigned int valid_count
, valid_node_count
, valid_inode_count
;
1531 unsigned int bimodal
, avg_vblocks
;
1532 int util_free
, util_valid
, util_invalid
;
1533 int rsvd_segs
, overp_segs
;
1534 int dirty_count
, node_pages
, meta_pages
;
1535 int prefree_count
, call_count
, cp_count
;
1536 int tot_segs
, node_segs
, data_segs
, free_segs
, free_secs
;
1537 int tot_blks
, data_blks
, node_blks
;
1538 int curseg
[NR_CURSEG_TYPE
];
1539 int cursec
[NR_CURSEG_TYPE
];
1540 int curzone
[NR_CURSEG_TYPE
];
1542 unsigned int segment_count
[2];
1543 unsigned int block_count
[2];
1544 unsigned int inplace_count
;
1545 unsigned base_mem
, cache_mem
, page_mem
;
1548 static inline struct f2fs_stat_info
*F2FS_STAT(struct f2fs_sb_info
*sbi
)
1550 return (struct f2fs_stat_info
*)sbi
->stat_info
;
1553 #define stat_inc_cp_count(si) ((si)->cp_count++)
1554 #define stat_inc_call_count(si) ((si)->call_count++)
1555 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1556 #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1557 #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
1558 #define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++)
1559 #define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++)
1560 #define stat_inc_inline_inode(inode) \
1562 if (f2fs_has_inline_data(inode)) \
1563 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
1565 #define stat_dec_inline_inode(inode) \
1567 if (f2fs_has_inline_data(inode)) \
1568 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
1570 #define stat_inc_inline_dir(inode) \
1572 if (f2fs_has_inline_dentry(inode)) \
1573 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
1575 #define stat_dec_inline_dir(inode) \
1577 if (f2fs_has_inline_dentry(inode)) \
1578 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
1580 #define stat_inc_seg_type(sbi, curseg) \
1581 ((sbi)->segment_count[(curseg)->alloc_type]++)
1582 #define stat_inc_block_count(sbi, curseg) \
1583 ((sbi)->block_count[(curseg)->alloc_type]++)
1584 #define stat_inc_inplace_blocks(sbi) \
1585 (atomic_inc(&(sbi)->inplace_count))
1586 #define stat_inc_seg_count(sbi, type) \
1588 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1590 if (type == SUM_TYPE_DATA) \
1596 #define stat_inc_tot_blk_count(si, blks) \
1597 (si->tot_blks += (blks))
1599 #define stat_inc_data_blk_count(sbi, blks) \
1601 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1602 stat_inc_tot_blk_count(si, blks); \
1603 si->data_blks += (blks); \
1606 #define stat_inc_node_blk_count(sbi, blks) \
1608 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1609 stat_inc_tot_blk_count(si, blks); \
1610 si->node_blks += (blks); \
1613 int f2fs_build_stats(struct f2fs_sb_info
*);
1614 void f2fs_destroy_stats(struct f2fs_sb_info
*);
1615 void __init
f2fs_create_root_stats(void);
1616 void f2fs_destroy_root_stats(void);
1618 #define stat_inc_cp_count(si)
1619 #define stat_inc_call_count(si)
1620 #define stat_inc_bggc_count(si)
1621 #define stat_inc_dirty_dir(sbi)
1622 #define stat_dec_dirty_dir(sbi)
1623 #define stat_inc_total_hit(sb)
1624 #define stat_inc_read_hit(sb)
1625 #define stat_inc_inline_inode(inode)
1626 #define stat_dec_inline_inode(inode)
1627 #define stat_inc_inline_dir(inode)
1628 #define stat_dec_inline_dir(inode)
1629 #define stat_inc_seg_type(sbi, curseg)
1630 #define stat_inc_block_count(sbi, curseg)
1631 #define stat_inc_inplace_blocks(sbi)
1632 #define stat_inc_seg_count(si, type)
1633 #define stat_inc_tot_blk_count(si, blks)
1634 #define stat_inc_data_blk_count(si, blks)
1635 #define stat_inc_node_blk_count(sbi, blks)
1637 static inline int f2fs_build_stats(struct f2fs_sb_info
*sbi
) { return 0; }
1638 static inline void f2fs_destroy_stats(struct f2fs_sb_info
*sbi
) { }
1639 static inline void __init
f2fs_create_root_stats(void) { }
1640 static inline void f2fs_destroy_root_stats(void) { }
1643 extern const struct file_operations f2fs_dir_operations
;
1644 extern const struct file_operations f2fs_file_operations
;
1645 extern const struct inode_operations f2fs_file_inode_operations
;
1646 extern const struct address_space_operations f2fs_dblock_aops
;
1647 extern const struct address_space_operations f2fs_node_aops
;
1648 extern const struct address_space_operations f2fs_meta_aops
;
1649 extern const struct inode_operations f2fs_dir_inode_operations
;
1650 extern const struct inode_operations f2fs_symlink_inode_operations
;
1651 extern const struct inode_operations f2fs_special_inode_operations
;
1656 bool f2fs_may_inline(struct inode
*);
1657 void read_inline_data(struct page
*, struct page
*);
1658 int f2fs_read_inline_data(struct inode
*, struct page
*);
1659 int f2fs_convert_inline_page(struct dnode_of_data
*, struct page
*);
1660 int f2fs_convert_inline_inode(struct inode
*);
1661 int f2fs_write_inline_data(struct inode
*, struct page
*);
1662 bool recover_inline_data(struct inode
*, struct page
*);
1663 struct f2fs_dir_entry
*find_in_inline_dir(struct inode
*, struct qstr
*,
1665 struct f2fs_dir_entry
*f2fs_parent_inline_dir(struct inode
*, struct page
**);
1666 int make_empty_inline_dir(struct inode
*inode
, struct inode
*, struct page
*);
1667 int f2fs_add_inline_entry(struct inode
*, const struct qstr
*, struct inode
*);
1668 void f2fs_delete_inline_entry(struct f2fs_dir_entry
*, struct page
*,
1669 struct inode
*, struct inode
*);
1670 bool f2fs_empty_inline_dir(struct inode
*);
1671 int f2fs_read_inline_dir(struct file
*, struct dir_context
*);