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>
22 #include <linux/vmalloc.h>
23 #include <linux/bio.h>
24 #include <linux/blkdev.h>
25 #include <linux/quotaops.h>
26 #ifdef CONFIG_F2FS_FS_ENCRYPTION
27 #include <linux/fscrypt_supp.h>
29 #include <linux/fscrypt_notsupp.h>
31 #include <crypto/hash.h>
33 #ifdef CONFIG_F2FS_CHECK_FS
34 #define f2fs_bug_on(sbi, condition) BUG_ON(condition)
36 #define f2fs_bug_on(sbi, condition) \
38 if (unlikely(condition)) { \
40 set_sbi_flag(sbi, SBI_NEED_FSCK); \
45 #ifdef CONFIG_F2FS_FAULT_INJECTION
62 struct f2fs_fault_info {
64 unsigned int inject_rate;
65 unsigned int inject_type;
68 extern char *fault_name[FAULT_MAX];
69 #define IS_FAULT_SET(fi, type) ((fi)->inject_type & (1 << (type)))
75 #define F2FS_MOUNT_BG_GC 0x00000001
76 #define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
77 #define F2FS_MOUNT_DISCARD 0x00000004
78 #define F2FS_MOUNT_NOHEAP 0x00000008
79 #define F2FS_MOUNT_XATTR_USER 0x00000010
80 #define F2FS_MOUNT_POSIX_ACL 0x00000020
81 #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
82 #define F2FS_MOUNT_INLINE_XATTR 0x00000080
83 #define F2FS_MOUNT_INLINE_DATA 0x00000100
84 #define F2FS_MOUNT_INLINE_DENTRY 0x00000200
85 #define F2FS_MOUNT_FLUSH_MERGE 0x00000400
86 #define F2FS_MOUNT_NOBARRIER 0x00000800
87 #define F2FS_MOUNT_FASTBOOT 0x00001000
88 #define F2FS_MOUNT_EXTENT_CACHE 0x00002000
89 #define F2FS_MOUNT_FORCE_FG_GC 0x00004000
90 #define F2FS_MOUNT_DATA_FLUSH 0x00008000
91 #define F2FS_MOUNT_FAULT_INJECTION 0x00010000
92 #define F2FS_MOUNT_ADAPTIVE 0x00020000
93 #define F2FS_MOUNT_LFS 0x00040000
94 #define F2FS_MOUNT_USRQUOTA 0x00080000
95 #define F2FS_MOUNT_GRPQUOTA 0x00100000
96 #define F2FS_MOUNT_PRJQUOTA 0x00200000
97 #define F2FS_MOUNT_QUOTA 0x00400000
98 #define F2FS_MOUNT_INLINE_XATTR_SIZE 0x00800000
100 #define clear_opt(sbi, option) ((sbi)->mount_opt.opt &= ~F2FS_MOUNT_##option)
101 #define set_opt(sbi, option) ((sbi)->mount_opt.opt |= F2FS_MOUNT_##option)
102 #define test_opt(sbi, option) ((sbi)->mount_opt.opt & F2FS_MOUNT_##option)
104 #define ver_after(a, b) (typecheck(unsigned long long, a) && \
105 typecheck(unsigned long long, b) && \
106 ((long long)((a) - (b)) > 0))
108 typedef u32 block_t; /*
109 * should not change u32, since it is the on-disk block
110 * address format, __le32.
114 struct f2fs_mount_info {
118 #define F2FS_FEATURE_ENCRYPT 0x0001
119 #define F2FS_FEATURE_BLKZONED 0x0002
120 #define F2FS_FEATURE_ATOMIC_WRITE 0x0004
121 #define F2FS_FEATURE_EXTRA_ATTR 0x0008
122 #define F2FS_FEATURE_PRJQUOTA 0x0010
123 #define F2FS_FEATURE_INODE_CHKSUM 0x0020
124 #define F2FS_FEATURE_FLEXIBLE_INLINE_XATTR 0x0040
125 #define F2FS_FEATURE_QUOTA_INO 0x0080
127 #define F2FS_HAS_FEATURE(sb, mask) \
128 ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
129 #define F2FS_SET_FEATURE(sb, mask) \
130 (F2FS_SB(sb)->raw_super->feature |= cpu_to_le32(mask))
131 #define F2FS_CLEAR_FEATURE(sb, mask) \
132 (F2FS_SB(sb)->raw_super->feature &= ~cpu_to_le32(mask))
135 * For checkpoint manager
142 #define CP_UMOUNT 0x00000001
143 #define CP_FASTBOOT 0x00000002
144 #define CP_SYNC 0x00000004
145 #define CP_RECOVERY 0x00000008
146 #define CP_DISCARD 0x00000010
147 #define CP_TRIMMED 0x00000020
149 #define DEF_BATCHED_TRIM_SECTIONS 2048
150 #define BATCHED_TRIM_SEGMENTS(sbi) \
151 (GET_SEG_FROM_SEC(sbi, SM_I(sbi)->trim_sections))
152 #define BATCHED_TRIM_BLOCKS(sbi) \
153 (BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg)
154 #define MAX_DISCARD_BLOCKS(sbi) BLKS_PER_SEC(sbi)
155 #define DEF_MAX_DISCARD_REQUEST 8 /* issue 8 discards per round */
156 #define DEF_MIN_DISCARD_ISSUE_TIME 50 /* 50 ms, if exists */
157 #define DEF_MAX_DISCARD_ISSUE_TIME 60000 /* 60 s, if no candidates */
158 #define DEF_CP_INTERVAL 60 /* 60 secs */
159 #define DEF_IDLE_INTERVAL 5 /* 5 secs */
169 * For CP/NAT/SIT/SSA readahead
179 /* for the list of ino */
181 ORPHAN_INO, /* for orphan ino list */
182 APPEND_INO, /* for append ino list */
183 UPDATE_INO, /* for update ino list */
184 FLUSH_INO, /* for multiple device flushing */
185 MAX_INO_ENTRY, /* max. list */
189 struct list_head list; /* list head */
190 nid_t ino; /* inode number */
191 unsigned int dirty_device; /* dirty device bitmap */
194 /* for the list of inodes to be GCed */
196 struct list_head list; /* list head */
197 struct inode *inode; /* vfs inode pointer */
200 /* for the bitmap indicate blocks to be discarded */
201 struct discard_entry {
202 struct list_head list; /* list head */
203 block_t start_blkaddr; /* start blockaddr of current segment */
204 unsigned char discard_map[SIT_VBLOCK_MAP_SIZE]; /* segment discard bitmap */
207 /* default discard granularity of inner discard thread, unit: block count */
208 #define DEFAULT_DISCARD_GRANULARITY 16
210 /* max discard pend list number */
211 #define MAX_PLIST_NUM 512
212 #define plist_idx(blk_num) ((blk_num) >= MAX_PLIST_NUM ? \
213 (MAX_PLIST_NUM - 1) : (blk_num - 1))
221 struct discard_info {
222 block_t lstart; /* logical start address */
223 block_t len; /* length */
224 block_t start; /* actual start address in dev */
228 struct rb_node rb_node; /* rb node located in rb-tree */
231 block_t lstart; /* logical start address */
232 block_t len; /* length */
233 block_t start; /* actual start address in dev */
235 struct discard_info di; /* discard info */
238 struct list_head list; /* command list */
239 struct completion wait; /* compleation */
240 struct block_device *bdev; /* bdev */
241 unsigned short ref; /* reference count */
242 unsigned char state; /* state */
243 int error; /* bio error */
254 struct discard_policy {
255 int type; /* type of discard */
256 unsigned int min_interval; /* used for candidates exist */
257 unsigned int max_interval; /* used for candidates not exist */
258 unsigned int max_requests; /* # of discards issued per round */
259 unsigned int io_aware_gran; /* minimum granularity discard not be aware of I/O */
260 bool io_aware; /* issue discard in idle time */
261 bool sync; /* submit discard with REQ_SYNC flag */
262 unsigned int granularity; /* discard granularity */
265 struct discard_cmd_control {
266 struct task_struct *f2fs_issue_discard; /* discard thread */
267 struct list_head entry_list; /* 4KB discard entry list */
268 struct list_head pend_list[MAX_PLIST_NUM];/* store pending entries */
269 unsigned char pend_list_tag[MAX_PLIST_NUM];/* tag for pending entries */
270 struct list_head wait_list; /* store on-flushing entries */
271 struct list_head fstrim_list; /* in-flight discard from fstrim */
272 wait_queue_head_t discard_wait_queue; /* waiting queue for wake-up */
273 unsigned int discard_wake; /* to wake up discard thread */
274 struct mutex cmd_lock;
275 unsigned int nr_discards; /* # of discards in the list */
276 unsigned int max_discards; /* max. discards to be issued */
277 unsigned int discard_granularity; /* discard granularity */
278 unsigned int undiscard_blks; /* # of undiscard blocks */
279 atomic_t issued_discard; /* # of issued discard */
280 atomic_t issing_discard; /* # of issing discard */
281 atomic_t discard_cmd_cnt; /* # of cached cmd count */
282 struct rb_root root; /* root of discard rb-tree */
285 /* for the list of fsync inodes, used only during recovery */
286 struct fsync_inode_entry {
287 struct list_head list; /* list head */
288 struct inode *inode; /* vfs inode pointer */
289 block_t blkaddr; /* block address locating the last fsync */
290 block_t last_dentry; /* block address locating the last dentry */
293 #define nats_in_cursum(jnl) (le16_to_cpu((jnl)->n_nats))
294 #define sits_in_cursum(jnl) (le16_to_cpu((jnl)->n_sits))
296 #define nat_in_journal(jnl, i) ((jnl)->nat_j.entries[i].ne)
297 #define nid_in_journal(jnl, i) ((jnl)->nat_j.entries[i].nid)
298 #define sit_in_journal(jnl, i) ((jnl)->sit_j.entries[i].se)
299 #define segno_in_journal(jnl, i) ((jnl)->sit_j.entries[i].segno)
301 #define MAX_NAT_JENTRIES(jnl) (NAT_JOURNAL_ENTRIES - nats_in_cursum(jnl))
302 #define MAX_SIT_JENTRIES(jnl) (SIT_JOURNAL_ENTRIES - sits_in_cursum(jnl))
304 static inline int update_nats_in_cursum(struct f2fs_journal *journal, int i)
306 int before = nats_in_cursum(journal);
308 journal->n_nats = cpu_to_le16(before + i);
312 static inline int update_sits_in_cursum(struct f2fs_journal *journal, int i)
314 int before = sits_in_cursum(journal);
316 journal->n_sits = cpu_to_le16(before + i);
320 static inline bool __has_cursum_space(struct f2fs_journal *journal,
323 if (type == NAT_JOURNAL)
324 return size <= MAX_NAT_JENTRIES(journal);
325 return size <= MAX_SIT_JENTRIES(journal);
331 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
332 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
333 #define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
335 #define F2FS_IOCTL_MAGIC 0xf5
336 #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
337 #define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
338 #define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
339 #define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
340 #define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
341 #define F2FS_IOC_GARBAGE_COLLECT _IOW(F2FS_IOCTL_MAGIC, 6, __u32)
342 #define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7)
343 #define F2FS_IOC_DEFRAGMENT _IOWR(F2FS_IOCTL_MAGIC, 8, \
344 struct f2fs_defragment)
345 #define F2FS_IOC_MOVE_RANGE _IOWR(F2FS_IOCTL_MAGIC, 9, \
346 struct f2fs_move_range)
347 #define F2FS_IOC_FLUSH_DEVICE _IOW(F2FS_IOCTL_MAGIC, 10, \
348 struct f2fs_flush_device)
349 #define F2FS_IOC_GARBAGE_COLLECT_RANGE _IOW(F2FS_IOCTL_MAGIC, 11, \
350 struct f2fs_gc_range)
351 #define F2FS_IOC_GET_FEATURES _IOR(F2FS_IOCTL_MAGIC, 12, __u32)
353 #define F2FS_IOC_SET_ENCRYPTION_POLICY FS_IOC_SET_ENCRYPTION_POLICY
354 #define F2FS_IOC_GET_ENCRYPTION_POLICY FS_IOC_GET_ENCRYPTION_POLICY
355 #define F2FS_IOC_GET_ENCRYPTION_PWSALT FS_IOC_GET_ENCRYPTION_PWSALT
358 * should be same as XFS_IOC_GOINGDOWN.
359 * Flags for going down operation used by FS_IOC_GOINGDOWN
361 #define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
362 #define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
363 #define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
364 #define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
365 #define F2FS_GOING_DOWN_METAFLUSH 0x3 /* going down with meta flush */
367 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
369 * ioctl commands in 32 bit emulation
371 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
372 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
373 #define F2FS_IOC32_GETVERSION FS_IOC32_GETVERSION
376 #define F2FS_IOC_FSGETXATTR FS_IOC_FSGETXATTR
377 #define F2FS_IOC_FSSETXATTR FS_IOC_FSSETXATTR
379 struct f2fs_gc_range {
385 struct f2fs_defragment {
390 struct f2fs_move_range {
391 u32 dst_fd; /* destination fd */
392 u64 pos_in; /* start position in src_fd */
393 u64 pos_out; /* start position in dst_fd */
394 u64 len; /* size to move */
397 struct f2fs_flush_device {
398 u32 dev_num; /* device number to flush */
399 u32 segments; /* # of segments to flush */
402 /* for inline stuff */
403 #define DEF_INLINE_RESERVED_SIZE 1
404 #define DEF_MIN_INLINE_SIZE 1
405 static inline int get_extra_isize(struct inode *inode);
406 static inline int get_inline_xattr_addrs(struct inode *inode);
407 #define F2FS_INLINE_XATTR_ADDRS(inode) get_inline_xattr_addrs(inode)
408 #define MAX_INLINE_DATA(inode) (sizeof(__le32) * \
409 (CUR_ADDRS_PER_INODE(inode) - \
410 F2FS_INLINE_XATTR_ADDRS(inode) - \
411 DEF_INLINE_RESERVED_SIZE))
414 #define NR_INLINE_DENTRY(inode) (MAX_INLINE_DATA(inode) * BITS_PER_BYTE / \
415 ((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \
417 #define INLINE_DENTRY_BITMAP_SIZE(inode) ((NR_INLINE_DENTRY(inode) + \
418 BITS_PER_BYTE - 1) / BITS_PER_BYTE)
419 #define INLINE_RESERVED_SIZE(inode) (MAX_INLINE_DATA(inode) - \
420 ((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \
421 NR_INLINE_DENTRY(inode) + \
422 INLINE_DENTRY_BITMAP_SIZE(inode)))
425 * For INODE and NODE manager
427 /* for directory operations */
428 struct f2fs_dentry_ptr {
431 struct f2fs_dir_entry *dentry;
432 __u8 (*filename)[F2FS_SLOT_LEN];
437 static inline void make_dentry_ptr_block(struct inode *inode,
438 struct f2fs_dentry_ptr *d, struct f2fs_dentry_block *t)
441 d->max = NR_DENTRY_IN_BLOCK;
442 d->nr_bitmap = SIZE_OF_DENTRY_BITMAP;
443 d->bitmap = &t->dentry_bitmap;
444 d->dentry = t->dentry;
445 d->filename = t->filename;
448 static inline void make_dentry_ptr_inline(struct inode *inode,
449 struct f2fs_dentry_ptr *d, void *t)
451 int entry_cnt = NR_INLINE_DENTRY(inode);
452 int bitmap_size = INLINE_DENTRY_BITMAP_SIZE(inode);
453 int reserved_size = INLINE_RESERVED_SIZE(inode);
457 d->nr_bitmap = bitmap_size;
459 d->dentry = t + bitmap_size + reserved_size;
460 d->filename = t + bitmap_size + reserved_size +
461 SIZE_OF_DIR_ENTRY * entry_cnt;
465 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
466 * as its node offset to distinguish from index node blocks.
467 * But some bits are used to mark the node block.
469 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
472 ALLOC_NODE, /* allocate a new node page if needed */
473 LOOKUP_NODE, /* look up a node without readahead */
475 * look up a node with readahead called
480 #define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */
482 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
484 /* vector size for gang look-up from extent cache that consists of radix tree */
485 #define EXT_TREE_VEC_SIZE 64
487 /* for in-memory extent cache entry */
488 #define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
490 /* number of extent info in extent cache we try to shrink */
491 #define EXTENT_CACHE_SHRINK_NUMBER 128
494 struct rb_node rb_node; /* rb node located in rb-tree */
495 unsigned int ofs; /* start offset of the entry */
496 unsigned int len; /* length of the entry */
500 unsigned int fofs; /* start offset in a file */
501 unsigned int len; /* length of the extent */
502 u32 blk; /* start block address of the extent */
506 struct rb_node rb_node;
513 struct extent_info ei; /* extent info */
516 struct list_head list; /* node in global extent list of sbi */
517 struct extent_tree *et; /* extent tree pointer */
521 nid_t ino; /* inode number */
522 struct rb_root root; /* root of extent info rb-tree */
523 struct extent_node *cached_en; /* recently accessed extent node */
524 struct extent_info largest; /* largested extent info */
525 struct list_head list; /* to be used by sbi->zombie_list */
526 rwlock_t lock; /* protect extent info rb-tree */
527 atomic_t node_cnt; /* # of extent node in rb-tree*/
531 * This structure is taken from ext4_map_blocks.
533 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
535 #define F2FS_MAP_NEW (1 << BH_New)
536 #define F2FS_MAP_MAPPED (1 << BH_Mapped)
537 #define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten)
538 #define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
541 struct f2fs_map_blocks {
545 unsigned int m_flags;
546 pgoff_t *m_next_pgofs; /* point next possible non-hole pgofs */
549 /* for flag in get_data_block */
551 F2FS_GET_BLOCK_DEFAULT,
552 F2FS_GET_BLOCK_FIEMAP,
554 F2FS_GET_BLOCK_PRE_DIO,
555 F2FS_GET_BLOCK_PRE_AIO,
559 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
561 #define FADVISE_COLD_BIT 0x01
562 #define FADVISE_LOST_PINO_BIT 0x02
563 #define FADVISE_ENCRYPT_BIT 0x04
564 #define FADVISE_ENC_NAME_BIT 0x08
565 #define FADVISE_KEEP_SIZE_BIT 0x10
567 #define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
568 #define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
569 #define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
570 #define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
571 #define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
572 #define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
573 #define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
574 #define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
575 #define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
576 #define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
577 #define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
578 #define file_keep_isize(inode) is_file(inode, FADVISE_KEEP_SIZE_BIT)
579 #define file_set_keep_isize(inode) set_file(inode, FADVISE_KEEP_SIZE_BIT)
581 #define DEF_DIR_LEVEL 0
583 struct f2fs_inode_info {
584 struct inode vfs_inode; /* serve a vfs inode */
585 unsigned long i_flags; /* keep an inode flags for ioctl */
586 unsigned char i_advise; /* use to give file attribute hints */
587 unsigned char i_dir_level; /* use for dentry level for large dir */
588 unsigned int i_current_depth; /* use only in directory structure */
589 unsigned int i_pino; /* parent inode number */
590 umode_t i_acl_mode; /* keep file acl mode temporarily */
592 /* Use below internally in f2fs*/
593 unsigned long flags; /* use to pass per-file flags */
594 struct rw_semaphore i_sem; /* protect fi info */
595 atomic_t dirty_pages; /* # of dirty pages */
596 f2fs_hash_t chash; /* hash value of given file name */
597 unsigned int clevel; /* maximum level of given file name */
598 struct task_struct *task; /* lookup and create consistency */
599 struct task_struct *cp_task; /* separate cp/wb IO stats*/
600 nid_t i_xattr_nid; /* node id that contains xattrs */
601 loff_t last_disk_size; /* lastly written file size */
604 struct dquot *i_dquot[MAXQUOTAS];
606 /* quota space reservation, managed internally by quota code */
607 qsize_t i_reserved_quota;
609 struct list_head dirty_list; /* dirty list for dirs and files */
610 struct list_head gdirty_list; /* linked in global dirty list */
611 struct list_head inmem_ilist; /* list for inmem inodes */
612 struct list_head inmem_pages; /* inmemory pages managed by f2fs */
613 struct task_struct *inmem_task; /* store inmemory task */
614 struct mutex inmem_lock; /* lock for inmemory pages */
615 struct extent_tree *extent_tree; /* cached extent_tree entry */
616 struct rw_semaphore dio_rwsem[2];/* avoid racing between dio and gc */
617 struct rw_semaphore i_mmap_sem;
618 struct rw_semaphore i_xattr_sem; /* avoid racing between reading and changing EAs */
620 int i_extra_isize; /* size of extra space located in i_addr */
621 kprojid_t i_projid; /* id for project quota */
622 int i_inline_xattr_size; /* inline xattr size */
625 static inline void get_extent_info(struct extent_info *ext,
626 struct f2fs_extent *i_ext)
628 ext->fofs = le32_to_cpu(i_ext->fofs);
629 ext->blk = le32_to_cpu(i_ext->blk);
630 ext->len = le32_to_cpu(i_ext->len);
633 static inline void set_raw_extent(struct extent_info *ext,
634 struct f2fs_extent *i_ext)
636 i_ext->fofs = cpu_to_le32(ext->fofs);
637 i_ext->blk = cpu_to_le32(ext->blk);
638 i_ext->len = cpu_to_le32(ext->len);
641 static inline void set_extent_info(struct extent_info *ei, unsigned int fofs,
642 u32 blk, unsigned int len)
649 static inline bool __is_discard_mergeable(struct discard_info *back,
650 struct discard_info *front)
652 return back->lstart + back->len == front->lstart;
655 static inline bool __is_discard_back_mergeable(struct discard_info *cur,
656 struct discard_info *back)
658 return __is_discard_mergeable(back, cur);
661 static inline bool __is_discard_front_mergeable(struct discard_info *cur,
662 struct discard_info *front)
664 return __is_discard_mergeable(cur, front);
667 static inline bool __is_extent_mergeable(struct extent_info *back,
668 struct extent_info *front)
670 return (back->fofs + back->len == front->fofs &&
671 back->blk + back->len == front->blk);
674 static inline bool __is_back_mergeable(struct extent_info *cur,
675 struct extent_info *back)
677 return __is_extent_mergeable(back, cur);
680 static inline bool __is_front_mergeable(struct extent_info *cur,
681 struct extent_info *front)
683 return __is_extent_mergeable(cur, front);
686 extern void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync);
687 static inline void __try_update_largest_extent(struct inode *inode,
688 struct extent_tree *et, struct extent_node *en)
690 if (en->ei.len > et->largest.len) {
691 et->largest = en->ei;
692 f2fs_mark_inode_dirty_sync(inode, true);
697 * For free nid management
700 FREE_NID, /* newly added to free nid list */
701 PREALLOC_NID, /* it is preallocated */
705 struct f2fs_nm_info {
706 block_t nat_blkaddr; /* base disk address of NAT */
707 nid_t max_nid; /* maximum possible node ids */
708 nid_t available_nids; /* # of available node ids */
709 nid_t next_scan_nid; /* the next nid to be scanned */
710 unsigned int ram_thresh; /* control the memory footprint */
711 unsigned int ra_nid_pages; /* # of nid pages to be readaheaded */
712 unsigned int dirty_nats_ratio; /* control dirty nats ratio threshold */
714 /* NAT cache management */
715 struct radix_tree_root nat_root;/* root of the nat entry cache */
716 struct radix_tree_root nat_set_root;/* root of the nat set cache */
717 struct rw_semaphore nat_tree_lock; /* protect nat_tree_lock */
718 struct list_head nat_entries; /* cached nat entry list (clean) */
719 unsigned int nat_cnt; /* the # of cached nat entries */
720 unsigned int dirty_nat_cnt; /* total num of nat entries in set */
721 unsigned int nat_blocks; /* # of nat blocks */
723 /* free node ids management */
724 struct radix_tree_root free_nid_root;/* root of the free_nid cache */
725 struct list_head free_nid_list; /* list for free nids excluding preallocated nids */
726 unsigned int nid_cnt[MAX_NID_STATE]; /* the number of free node id */
727 spinlock_t nid_list_lock; /* protect nid lists ops */
728 struct mutex build_lock; /* lock for build free nids */
729 unsigned char (*free_nid_bitmap)[NAT_ENTRY_BITMAP_SIZE];
730 unsigned char *nat_block_bitmap;
731 unsigned short *free_nid_count; /* free nid count of NAT block */
734 char *nat_bitmap; /* NAT bitmap pointer */
736 unsigned int nat_bits_blocks; /* # of nat bits blocks */
737 unsigned char *nat_bits; /* NAT bits blocks */
738 unsigned char *full_nat_bits; /* full NAT pages */
739 unsigned char *empty_nat_bits; /* empty NAT pages */
740 #ifdef CONFIG_F2FS_CHECK_FS
741 char *nat_bitmap_mir; /* NAT bitmap mirror */
743 int bitmap_size; /* bitmap size */
747 * this structure is used as one of function parameters.
748 * all the information are dedicated to a given direct node block determined
749 * by the data offset in a file.
751 struct dnode_of_data {
752 struct inode *inode; /* vfs inode pointer */
753 struct page *inode_page; /* its inode page, NULL is possible */
754 struct page *node_page; /* cached direct node page */
755 nid_t nid; /* node id of the direct node block */
756 unsigned int ofs_in_node; /* data offset in the node page */
757 bool inode_page_locked; /* inode page is locked or not */
758 bool node_changed; /* is node block changed */
759 char cur_level; /* level of hole node page */
760 char max_level; /* level of current page located */
761 block_t data_blkaddr; /* block address of the node block */
764 static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
765 struct page *ipage, struct page *npage, nid_t nid)
767 memset(dn, 0, sizeof(*dn));
769 dn->inode_page = ipage;
770 dn->node_page = npage;
777 * By default, there are 6 active log areas across the whole main area.
778 * When considering hot and cold data separation to reduce cleaning overhead,
779 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
781 * In the current design, you should not change the numbers intentionally.
782 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
783 * logs individually according to the underlying devices. (default: 6)
784 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
785 * data and 8 for node logs.
787 #define NR_CURSEG_DATA_TYPE (3)
788 #define NR_CURSEG_NODE_TYPE (3)
789 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
792 CURSEG_HOT_DATA = 0, /* directory entry blocks */
793 CURSEG_WARM_DATA, /* data blocks */
794 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
795 CURSEG_HOT_NODE, /* direct node blocks of directory files */
796 CURSEG_WARM_NODE, /* direct node blocks of normal files */
797 CURSEG_COLD_NODE, /* indirect node blocks */
802 struct completion wait;
803 struct llist_node llnode;
808 struct flush_cmd_control {
809 struct task_struct *f2fs_issue_flush; /* flush thread */
810 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
811 atomic_t issued_flush; /* # of issued flushes */
812 atomic_t issing_flush; /* # of issing flushes */
813 struct llist_head issue_list; /* list for command issue */
814 struct llist_node *dispatch_list; /* list for command dispatch */
817 struct f2fs_sm_info {
818 struct sit_info *sit_info; /* whole segment information */
819 struct free_segmap_info *free_info; /* free segment information */
820 struct dirty_seglist_info *dirty_info; /* dirty segment information */
821 struct curseg_info *curseg_array; /* active segment information */
823 struct rw_semaphore curseg_lock; /* for preventing curseg change */
825 block_t seg0_blkaddr; /* block address of 0'th segment */
826 block_t main_blkaddr; /* start block address of main area */
827 block_t ssa_blkaddr; /* start block address of SSA area */
829 unsigned int segment_count; /* total # of segments */
830 unsigned int main_segments; /* # of segments in main area */
831 unsigned int reserved_segments; /* # of reserved segments */
832 unsigned int ovp_segments; /* # of overprovision segments */
834 /* a threshold to reclaim prefree segments */
835 unsigned int rec_prefree_segments;
837 /* for batched trimming */
838 unsigned int trim_sections; /* # of sections to trim */
840 struct list_head sit_entry_set; /* sit entry set list */
842 unsigned int ipu_policy; /* in-place-update policy */
843 unsigned int min_ipu_util; /* in-place-update threshold */
844 unsigned int min_fsync_blocks; /* threshold for fsync */
845 unsigned int min_hot_blocks; /* threshold for hot block allocation */
846 unsigned int min_ssr_sections; /* threshold to trigger SSR allocation */
848 /* for flush command control */
849 struct flush_cmd_control *fcc_info;
851 /* for discard command control */
852 struct discard_cmd_control *dcc_info;
859 * COUNT_TYPE for monitoring
861 * f2fs monitors the number of several block types such as on-writeback,
862 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
864 #define WB_DATA_TYPE(p) (__is_cp_guaranteed(p) ? F2FS_WB_CP_DATA : F2FS_WB_DATA)
879 * The below are the page types of bios used in submit_bio().
880 * The available types are:
881 * DATA User data pages. It operates as async mode.
882 * NODE Node pages. It operates as async mode.
883 * META FS metadata pages such as SIT, NAT, CP.
884 * NR_PAGE_TYPE The number of page types.
885 * META_FLUSH Make sure the previous pages are written
886 * with waiting the bio's completion
887 * ... Only can be used with META.
889 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
896 INMEM, /* the below types are used by tracepoints only. */
905 HOT = 0, /* must be zero for meta bio */
911 enum need_lock_type {
917 enum cp_reason_type {
930 APP_DIRECT_IO, /* app direct IOs */
931 APP_BUFFERED_IO, /* app buffered IOs */
932 APP_WRITE_IO, /* app write IOs */
933 APP_MAPPED_IO, /* app mapped IOs */
934 FS_DATA_IO, /* data IOs from kworker/fsync/reclaimer */
935 FS_NODE_IO, /* node IOs from kworker/fsync/reclaimer */
936 FS_META_IO, /* meta IOs from kworker/reclaimer */
937 FS_GC_DATA_IO, /* data IOs from forground gc */
938 FS_GC_NODE_IO, /* node IOs from forground gc */
939 FS_CP_DATA_IO, /* data IOs from checkpoint */
940 FS_CP_NODE_IO, /* node IOs from checkpoint */
941 FS_CP_META_IO, /* meta IOs from checkpoint */
942 FS_DISCARD, /* discard */
946 struct f2fs_io_info {
947 struct f2fs_sb_info *sbi; /* f2fs_sb_info pointer */
948 nid_t ino; /* inode number */
949 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
950 enum temp_type temp; /* contains HOT/WARM/COLD */
951 int op; /* contains REQ_OP_ */
952 int op_flags; /* req_flag_bits */
953 block_t new_blkaddr; /* new block address to be written */
954 block_t old_blkaddr; /* old block address before Cow */
955 struct page *page; /* page to be written */
956 struct page *encrypted_page; /* encrypted page */
957 struct list_head list; /* serialize IOs */
958 bool submitted; /* indicate IO submission */
959 int need_lock; /* indicate we need to lock cp_rwsem */
960 bool in_list; /* indicate fio is in io_list */
961 enum iostat_type io_type; /* io type */
964 #define is_read_io(rw) ((rw) == READ)
965 struct f2fs_bio_info {
966 struct f2fs_sb_info *sbi; /* f2fs superblock */
967 struct bio *bio; /* bios to merge */
968 sector_t last_block_in_bio; /* last block number */
969 struct f2fs_io_info fio; /* store buffered io info. */
970 struct rw_semaphore io_rwsem; /* blocking op for bio */
971 spinlock_t io_lock; /* serialize DATA/NODE IOs */
972 struct list_head io_list; /* track fios */
975 #define FDEV(i) (sbi->devs[i])
976 #define RDEV(i) (raw_super->devs[i])
977 struct f2fs_dev_info {
978 struct block_device *bdev;
979 char path[MAX_PATH_LEN];
980 unsigned int total_segments;
983 #ifdef CONFIG_BLK_DEV_ZONED
984 unsigned int nr_blkz; /* Total number of zones */
985 u8 *blkz_type; /* Array of zones type */
990 DIR_INODE, /* for dirty dir inode */
991 FILE_INODE, /* for dirty regular/symlink inode */
992 DIRTY_META, /* for all dirtied inode metadata */
993 ATOMIC_FILE, /* for all atomic files */
997 /* for inner inode cache management */
998 struct inode_management {
999 struct radix_tree_root ino_root; /* ino entry array */
1000 spinlock_t ino_lock; /* for ino entry lock */
1001 struct list_head ino_list; /* inode list head */
1002 unsigned long ino_num; /* number of entries */
1005 /* For s_flag in struct f2fs_sb_info */
1007 SBI_IS_DIRTY, /* dirty flag for checkpoint */
1008 SBI_IS_CLOSE, /* specify unmounting */
1009 SBI_NEED_FSCK, /* need fsck.f2fs to fix */
1010 SBI_POR_DOING, /* recovery is doing or not */
1011 SBI_NEED_SB_WRITE, /* need to recover superblock */
1012 SBI_NEED_CP, /* need to checkpoint */
1021 struct f2fs_sb_info {
1022 struct super_block *sb; /* pointer to VFS super block */
1023 struct proc_dir_entry *s_proc; /* proc entry */
1024 struct f2fs_super_block *raw_super; /* raw super block pointer */
1025 int valid_super_block; /* valid super block no */
1026 unsigned long s_flag; /* flags for sbi */
1028 #ifdef CONFIG_BLK_DEV_ZONED
1029 unsigned int blocks_per_blkz; /* F2FS blocks per zone */
1030 unsigned int log_blocks_per_blkz; /* log2 F2FS blocks per zone */
1033 /* for node-related operations */
1034 struct f2fs_nm_info *nm_info; /* node manager */
1035 struct inode *node_inode; /* cache node blocks */
1037 /* for segment-related operations */
1038 struct f2fs_sm_info *sm_info; /* segment manager */
1040 /* for bio operations */
1041 struct f2fs_bio_info *write_io[NR_PAGE_TYPE]; /* for write bios */
1042 struct mutex wio_mutex[NR_PAGE_TYPE - 1][NR_TEMP_TYPE];
1043 /* bio ordering for NODE/DATA */
1044 int write_io_size_bits; /* Write IO size bits */
1045 mempool_t *write_io_dummy; /* Dummy pages */
1047 /* for checkpoint */
1048 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
1049 int cur_cp_pack; /* remain current cp pack */
1050 spinlock_t cp_lock; /* for flag in ckpt */
1051 struct inode *meta_inode; /* cache meta blocks */
1052 struct mutex cp_mutex; /* checkpoint procedure lock */
1053 struct rw_semaphore cp_rwsem; /* blocking FS operations */
1054 struct rw_semaphore node_write; /* locking node writes */
1055 struct rw_semaphore node_change; /* locking node change */
1056 wait_queue_head_t cp_wait;
1057 unsigned long last_time[MAX_TIME]; /* to store time in jiffies */
1058 long interval_time[MAX_TIME]; /* to store thresholds */
1060 struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */
1062 /* for orphan inode, use 0'th array */
1063 unsigned int max_orphans; /* max orphan inodes */
1065 /* for inode management */
1066 struct list_head inode_list[NR_INODE_TYPE]; /* dirty inode list */
1067 spinlock_t inode_lock[NR_INODE_TYPE]; /* for dirty inode list lock */
1069 /* for extent tree cache */
1070 struct radix_tree_root extent_tree_root;/* cache extent cache entries */
1071 struct mutex extent_tree_lock; /* locking extent radix tree */
1072 struct list_head extent_list; /* lru list for shrinker */
1073 spinlock_t extent_lock; /* locking extent lru list */
1074 atomic_t total_ext_tree; /* extent tree count */
1075 struct list_head zombie_list; /* extent zombie tree list */
1076 atomic_t total_zombie_tree; /* extent zombie tree count */
1077 atomic_t total_ext_node; /* extent info count */
1079 /* basic filesystem units */
1080 unsigned int log_sectors_per_block; /* log2 sectors per block */
1081 unsigned int log_blocksize; /* log2 block size */
1082 unsigned int blocksize; /* block size */
1083 unsigned int root_ino_num; /* root inode number*/
1084 unsigned int node_ino_num; /* node inode number*/
1085 unsigned int meta_ino_num; /* meta inode number*/
1086 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
1087 unsigned int blocks_per_seg; /* blocks per segment */
1088 unsigned int segs_per_sec; /* segments per section */
1089 unsigned int secs_per_zone; /* sections per zone */
1090 unsigned int total_sections; /* total section count */
1091 unsigned int total_node_count; /* total node block count */
1092 unsigned int total_valid_node_count; /* valid node block count */
1093 loff_t max_file_blocks; /* max block index of file */
1094 int active_logs; /* # of active logs */
1095 int dir_level; /* directory level */
1096 int inline_xattr_size; /* inline xattr size */
1097 unsigned int trigger_ssr_threshold; /* threshold to trigger ssr */
1099 block_t user_block_count; /* # of user blocks */
1100 block_t total_valid_block_count; /* # of valid blocks */
1101 block_t discard_blks; /* discard command candidats */
1102 block_t last_valid_block_count; /* for recovery */
1103 block_t reserved_blocks; /* configurable reserved blocks */
1104 block_t current_reserved_blocks; /* current reserved blocks */
1106 u32 s_next_generation; /* for NFS support */
1108 /* # of pages, see count_type */
1109 atomic_t nr_pages[NR_COUNT_TYPE];
1110 /* # of allocated blocks */
1111 struct percpu_counter alloc_valid_block_count;
1113 /* writeback control */
1114 atomic_t wb_sync_req; /* count # of WB_SYNC threads */
1116 /* valid inode count */
1117 struct percpu_counter total_valid_inode_count;
1119 struct f2fs_mount_info mount_opt; /* mount options */
1121 /* for cleaning operations */
1122 struct mutex gc_mutex; /* mutex for GC */
1123 struct f2fs_gc_kthread *gc_thread; /* GC thread */
1124 unsigned int cur_victim_sec; /* current victim section num */
1126 /* threshold for converting bg victims for fg */
1129 /* maximum # of trials to find a victim segment for SSR and GC */
1130 unsigned int max_victim_search;
1133 * for stat information.
1134 * one is for the LFS mode, and the other is for the SSR mode.
1136 #ifdef CONFIG_F2FS_STAT_FS
1137 struct f2fs_stat_info *stat_info; /* FS status information */
1138 unsigned int segment_count[2]; /* # of allocated segments */
1139 unsigned int block_count[2]; /* # of allocated blocks */
1140 atomic_t inplace_count; /* # of inplace update */
1141 atomic64_t total_hit_ext; /* # of lookup extent cache */
1142 atomic64_t read_hit_rbtree; /* # of hit rbtree extent node */
1143 atomic64_t read_hit_largest; /* # of hit largest extent node */
1144 atomic64_t read_hit_cached; /* # of hit cached extent node */
1145 atomic_t inline_xattr; /* # of inline_xattr inodes */
1146 atomic_t inline_inode; /* # of inline_data inodes */
1147 atomic_t inline_dir; /* # of inline_dentry inodes */
1148 atomic_t aw_cnt; /* # of atomic writes */
1149 atomic_t vw_cnt; /* # of volatile writes */
1150 atomic_t max_aw_cnt; /* max # of atomic writes */
1151 atomic_t max_vw_cnt; /* max # of volatile writes */
1152 int bg_gc; /* background gc calls */
1153 unsigned int ndirty_inode[NR_INODE_TYPE]; /* # of dirty inodes */
1155 spinlock_t stat_lock; /* lock for stat operations */
1157 /* For app/fs IO statistics */
1158 spinlock_t iostat_lock;
1159 unsigned long long write_iostat[NR_IO_TYPE];
1162 /* For sysfs suppport */
1163 struct kobject s_kobj;
1164 struct completion s_kobj_unregister;
1166 /* For shrinker support */
1167 struct list_head s_list;
1168 int s_ndevs; /* number of devices */
1169 struct f2fs_dev_info *devs; /* for device list */
1170 unsigned int dirty_device; /* for checkpoint data flush */
1171 spinlock_t dev_lock; /* protect dirty_device */
1172 struct mutex umount_mutex;
1173 unsigned int shrinker_run_no;
1175 /* For write statistics */
1176 u64 sectors_written_start;
1179 /* Reference to checksum algorithm driver via cryptoapi */
1180 struct crypto_shash *s_chksum_driver;
1182 /* Precomputed FS UUID checksum for seeding other checksums */
1183 __u32 s_chksum_seed;
1185 /* For fault injection */
1186 #ifdef CONFIG_F2FS_FAULT_INJECTION
1187 struct f2fs_fault_info fault_info;
1191 /* Names of quota files with journalled quota */
1192 char *s_qf_names[MAXQUOTAS];
1193 int s_jquota_fmt; /* Format of quota to use */
1197 #ifdef CONFIG_F2FS_FAULT_INJECTION
1198 #define f2fs_show_injection_info(type) \
1199 printk("%sF2FS-fs : inject %s in %s of %pF\n", \
1200 KERN_INFO, fault_name[type], \
1201 __func__, __builtin_return_address(0))
1202 static inline bool time_to_inject(struct f2fs_sb_info *sbi, int type)
1204 struct f2fs_fault_info *ffi = &sbi->fault_info;
1206 if (!ffi->inject_rate)
1209 if (!IS_FAULT_SET(ffi, type))
1212 atomic_inc(&ffi->inject_ops);
1213 if (atomic_read(&ffi->inject_ops) >= ffi->inject_rate) {
1214 atomic_set(&ffi->inject_ops, 0);
1221 /* For write statistics. Suppose sector size is 512 bytes,
1222 * and the return value is in kbytes. s is of struct f2fs_sb_info.
1224 #define BD_PART_WRITTEN(s) \
1225 (((u64)part_stat_read((s)->sb->s_bdev->bd_part, sectors[1]) - \
1226 (s)->sectors_written_start) >> 1)
1228 static inline void f2fs_update_time(struct f2fs_sb_info *sbi, int type)
1230 sbi->last_time[type] = jiffies;
1233 static inline bool f2fs_time_over(struct f2fs_sb_info *sbi, int type)
1235 unsigned long interval = sbi->interval_time[type] * HZ;
1237 return time_after(jiffies, sbi->last_time[type] + interval);
1240 static inline bool is_idle(struct f2fs_sb_info *sbi)
1242 struct block_device *bdev = sbi->sb->s_bdev;
1243 struct request_queue *q = bdev_get_queue(bdev);
1244 struct request_list *rl = &q->root_rl;
1246 if (rl->count[BLK_RW_SYNC] || rl->count[BLK_RW_ASYNC])
1249 return f2fs_time_over(sbi, REQ_TIME);
1255 static inline u32 f2fs_crc32(struct f2fs_sb_info *sbi, const void *address,
1256 unsigned int length)
1258 SHASH_DESC_ON_STACK(shash, sbi->s_chksum_driver);
1259 u32 *ctx = (u32 *)shash_desc_ctx(shash);
1263 shash->tfm = sbi->s_chksum_driver;
1265 *ctx = F2FS_SUPER_MAGIC;
1267 err = crypto_shash_update(shash, address, length);
1275 static inline bool f2fs_crc_valid(struct f2fs_sb_info *sbi, __u32 blk_crc,
1276 void *buf, size_t buf_size)
1278 return f2fs_crc32(sbi, buf, buf_size) == blk_crc;
1281 static inline u32 f2fs_chksum(struct f2fs_sb_info *sbi, u32 crc,
1282 const void *address, unsigned int length)
1285 struct shash_desc shash;
1290 BUG_ON(crypto_shash_descsize(sbi->s_chksum_driver) != sizeof(desc.ctx));
1292 desc.shash.tfm = sbi->s_chksum_driver;
1293 desc.shash.flags = 0;
1294 *(u32 *)desc.ctx = crc;
1296 err = crypto_shash_update(&desc.shash, address, length);
1299 return *(u32 *)desc.ctx;
1302 static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
1304 return container_of(inode, struct f2fs_inode_info, vfs_inode);
1307 static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
1309 return sb->s_fs_info;
1312 static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
1314 return F2FS_SB(inode->i_sb);
1317 static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
1319 return F2FS_I_SB(mapping->host);
1322 static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
1324 return F2FS_M_SB(page->mapping);
1327 static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
1329 return (struct f2fs_super_block *)(sbi->raw_super);
1332 static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
1334 return (struct f2fs_checkpoint *)(sbi->ckpt);
1337 static inline struct f2fs_node *F2FS_NODE(struct page *page)
1339 return (struct f2fs_node *)page_address(page);
1342 static inline struct f2fs_inode *F2FS_INODE(struct page *page)
1344 return &((struct f2fs_node *)page_address(page))->i;
1347 static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
1349 return (struct f2fs_nm_info *)(sbi->nm_info);
1352 static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
1354 return (struct f2fs_sm_info *)(sbi->sm_info);
1357 static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
1359 return (struct sit_info *)(SM_I(sbi)->sit_info);
1362 static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
1364 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
1367 static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
1369 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
1372 static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
1374 return sbi->meta_inode->i_mapping;
1377 static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
1379 return sbi->node_inode->i_mapping;
1382 static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
1384 return test_bit(type, &sbi->s_flag);
1387 static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
1389 set_bit(type, &sbi->s_flag);
1392 static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
1394 clear_bit(type, &sbi->s_flag);
1397 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
1399 return le64_to_cpu(cp->checkpoint_ver);
1402 static inline unsigned long f2fs_qf_ino(struct super_block *sb, int type)
1404 if (type < F2FS_MAX_QUOTAS)
1405 return le32_to_cpu(F2FS_SB(sb)->raw_super->qf_ino[type]);
1409 static inline __u64 cur_cp_crc(struct f2fs_checkpoint *cp)
1411 size_t crc_offset = le32_to_cpu(cp->checksum_offset);
1412 return le32_to_cpu(*((__le32 *)((unsigned char *)cp + crc_offset)));
1415 static inline bool __is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1417 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1419 return ckpt_flags & f;
1422 static inline bool is_set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1424 return __is_set_ckpt_flags(F2FS_CKPT(sbi), f);
1427 static inline void __set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1429 unsigned int ckpt_flags;
1431 ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1433 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1436 static inline void set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1438 unsigned long flags;
1440 spin_lock_irqsave(&sbi->cp_lock, flags);
1441 __set_ckpt_flags(F2FS_CKPT(sbi), f);
1442 spin_unlock_irqrestore(&sbi->cp_lock, flags);
1445 static inline void __clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1447 unsigned int ckpt_flags;
1449 ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1451 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1454 static inline void clear_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1456 unsigned long flags;
1458 spin_lock_irqsave(&sbi->cp_lock, flags);
1459 __clear_ckpt_flags(F2FS_CKPT(sbi), f);
1460 spin_unlock_irqrestore(&sbi->cp_lock, flags);
1463 static inline void disable_nat_bits(struct f2fs_sb_info *sbi, bool lock)
1465 unsigned long flags;
1467 set_sbi_flag(sbi, SBI_NEED_FSCK);
1470 spin_lock_irqsave(&sbi->cp_lock, flags);
1471 __clear_ckpt_flags(F2FS_CKPT(sbi), CP_NAT_BITS_FLAG);
1472 kfree(NM_I(sbi)->nat_bits);
1473 NM_I(sbi)->nat_bits = NULL;
1475 spin_unlock_irqrestore(&sbi->cp_lock, flags);
1478 static inline bool enabled_nat_bits(struct f2fs_sb_info *sbi,
1479 struct cp_control *cpc)
1481 bool set = is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG);
1483 return (cpc) ? (cpc->reason & CP_UMOUNT) && set : set;
1486 static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
1488 down_read(&sbi->cp_rwsem);
1491 static inline int f2fs_trylock_op(struct f2fs_sb_info *sbi)
1493 return down_read_trylock(&sbi->cp_rwsem);
1496 static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
1498 up_read(&sbi->cp_rwsem);
1501 static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
1503 down_write(&sbi->cp_rwsem);
1506 static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
1508 up_write(&sbi->cp_rwsem);
1511 static inline int __get_cp_reason(struct f2fs_sb_info *sbi)
1513 int reason = CP_SYNC;
1515 if (test_opt(sbi, FASTBOOT))
1516 reason = CP_FASTBOOT;
1517 if (is_sbi_flag_set(sbi, SBI_IS_CLOSE))
1522 static inline bool __remain_node_summaries(int reason)
1524 return (reason & (CP_UMOUNT | CP_FASTBOOT));
1527 static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
1529 return (is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG) ||
1530 is_set_ckpt_flags(sbi, CP_FASTBOOT_FLAG));
1534 * Check whether the given nid is within node id range.
1536 static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
1538 if (unlikely(nid < F2FS_ROOT_INO(sbi)))
1540 if (unlikely(nid >= NM_I(sbi)->max_nid))
1546 * Check whether the inode has blocks or not
1548 static inline int F2FS_HAS_BLOCKS(struct inode *inode)
1550 block_t xattr_block = F2FS_I(inode)->i_xattr_nid ? 1 : 0;
1552 return (inode->i_blocks >> F2FS_LOG_SECTORS_PER_BLOCK) > xattr_block;
1555 static inline bool f2fs_has_xattr_block(unsigned int ofs)
1557 return ofs == XATTR_NODE_OFFSET;
1560 static inline void f2fs_i_blocks_write(struct inode *, block_t, bool, bool);
1561 static inline int inc_valid_block_count(struct f2fs_sb_info *sbi,
1562 struct inode *inode, blkcnt_t *count)
1564 blkcnt_t diff = 0, release = 0;
1565 block_t avail_user_block_count;
1568 ret = dquot_reserve_block(inode, *count);
1572 #ifdef CONFIG_F2FS_FAULT_INJECTION
1573 if (time_to_inject(sbi, FAULT_BLOCK)) {
1574 f2fs_show_injection_info(FAULT_BLOCK);
1580 * let's increase this in prior to actual block count change in order
1581 * for f2fs_sync_file to avoid data races when deciding checkpoint.
1583 percpu_counter_add(&sbi->alloc_valid_block_count, (*count));
1585 spin_lock(&sbi->stat_lock);
1586 sbi->total_valid_block_count += (block_t)(*count);
1587 avail_user_block_count = sbi->user_block_count -
1588 sbi->current_reserved_blocks;
1589 if (unlikely(sbi->total_valid_block_count > avail_user_block_count)) {
1590 diff = sbi->total_valid_block_count - avail_user_block_count;
1593 sbi->total_valid_block_count = avail_user_block_count;
1595 spin_unlock(&sbi->stat_lock);
1596 percpu_counter_sub(&sbi->alloc_valid_block_count, diff);
1600 spin_unlock(&sbi->stat_lock);
1603 dquot_release_reservation_block(inode, release);
1604 f2fs_i_blocks_write(inode, *count, true, true);
1608 dquot_release_reservation_block(inode, release);
1612 static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
1613 struct inode *inode,
1616 blkcnt_t sectors = count << F2FS_LOG_SECTORS_PER_BLOCK;
1618 spin_lock(&sbi->stat_lock);
1619 f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
1620 f2fs_bug_on(sbi, inode->i_blocks < sectors);
1621 sbi->total_valid_block_count -= (block_t)count;
1622 if (sbi->reserved_blocks &&
1623 sbi->current_reserved_blocks < sbi->reserved_blocks)
1624 sbi->current_reserved_blocks = min(sbi->reserved_blocks,
1625 sbi->current_reserved_blocks + count);
1626 spin_unlock(&sbi->stat_lock);
1627 f2fs_i_blocks_write(inode, count, false, true);
1630 static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
1632 atomic_inc(&sbi->nr_pages[count_type]);
1634 if (count_type == F2FS_DIRTY_DATA || count_type == F2FS_INMEM_PAGES ||
1635 count_type == F2FS_WB_CP_DATA || count_type == F2FS_WB_DATA)
1638 set_sbi_flag(sbi, SBI_IS_DIRTY);
1641 static inline void inode_inc_dirty_pages(struct inode *inode)
1643 atomic_inc(&F2FS_I(inode)->dirty_pages);
1644 inc_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
1645 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
1646 if (IS_NOQUOTA(inode))
1647 inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_QDATA);
1650 static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
1652 atomic_dec(&sbi->nr_pages[count_type]);
1655 static inline void inode_dec_dirty_pages(struct inode *inode)
1657 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
1658 !S_ISLNK(inode->i_mode))
1661 atomic_dec(&F2FS_I(inode)->dirty_pages);
1662 dec_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
1663 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
1664 if (IS_NOQUOTA(inode))
1665 dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_QDATA);
1668 static inline s64 get_pages(struct f2fs_sb_info *sbi, int count_type)
1670 return atomic_read(&sbi->nr_pages[count_type]);
1673 static inline int get_dirty_pages(struct inode *inode)
1675 return atomic_read(&F2FS_I(inode)->dirty_pages);
1678 static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
1680 unsigned int pages_per_sec = sbi->segs_per_sec * sbi->blocks_per_seg;
1681 unsigned int segs = (get_pages(sbi, block_type) + pages_per_sec - 1) >>
1682 sbi->log_blocks_per_seg;
1684 return segs / sbi->segs_per_sec;
1687 static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
1689 return sbi->total_valid_block_count;
1692 static inline block_t discard_blocks(struct f2fs_sb_info *sbi)
1694 return sbi->discard_blks;
1697 static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
1699 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1701 /* return NAT or SIT bitmap */
1702 if (flag == NAT_BITMAP)
1703 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
1704 else if (flag == SIT_BITMAP)
1705 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
1710 static inline block_t __cp_payload(struct f2fs_sb_info *sbi)
1712 return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
1715 static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
1717 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1720 if (__cp_payload(sbi) > 0) {
1721 if (flag == NAT_BITMAP)
1722 return &ckpt->sit_nat_version_bitmap;
1724 return (unsigned char *)ckpt + F2FS_BLKSIZE;
1726 offset = (flag == NAT_BITMAP) ?
1727 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
1728 return &ckpt->sit_nat_version_bitmap + offset;
1732 static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
1734 block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
1736 if (sbi->cur_cp_pack == 2)
1737 start_addr += sbi->blocks_per_seg;
1741 static inline block_t __start_cp_next_addr(struct f2fs_sb_info *sbi)
1743 block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
1745 if (sbi->cur_cp_pack == 1)
1746 start_addr += sbi->blocks_per_seg;
1750 static inline void __set_cp_next_pack(struct f2fs_sb_info *sbi)
1752 sbi->cur_cp_pack = (sbi->cur_cp_pack == 1) ? 2 : 1;
1755 static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
1757 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
1760 static inline int inc_valid_node_count(struct f2fs_sb_info *sbi,
1761 struct inode *inode, bool is_inode)
1763 block_t valid_block_count;
1764 unsigned int valid_node_count;
1765 bool quota = inode && !is_inode;
1768 int ret = dquot_reserve_block(inode, 1);
1773 spin_lock(&sbi->stat_lock);
1775 valid_block_count = sbi->total_valid_block_count + 1;
1776 if (unlikely(valid_block_count + sbi->current_reserved_blocks >
1777 sbi->user_block_count)) {
1778 spin_unlock(&sbi->stat_lock);
1782 valid_node_count = sbi->total_valid_node_count + 1;
1783 if (unlikely(valid_node_count > sbi->total_node_count)) {
1784 spin_unlock(&sbi->stat_lock);
1788 sbi->total_valid_node_count++;
1789 sbi->total_valid_block_count++;
1790 spin_unlock(&sbi->stat_lock);
1794 f2fs_mark_inode_dirty_sync(inode, true);
1796 f2fs_i_blocks_write(inode, 1, true, true);
1799 percpu_counter_inc(&sbi->alloc_valid_block_count);
1804 dquot_release_reservation_block(inode, 1);
1808 static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
1809 struct inode *inode, bool is_inode)
1811 spin_lock(&sbi->stat_lock);
1813 f2fs_bug_on(sbi, !sbi->total_valid_block_count);
1814 f2fs_bug_on(sbi, !sbi->total_valid_node_count);
1815 f2fs_bug_on(sbi, !is_inode && !inode->i_blocks);
1817 sbi->total_valid_node_count--;
1818 sbi->total_valid_block_count--;
1819 if (sbi->reserved_blocks &&
1820 sbi->current_reserved_blocks < sbi->reserved_blocks)
1821 sbi->current_reserved_blocks++;
1823 spin_unlock(&sbi->stat_lock);
1826 f2fs_i_blocks_write(inode, 1, false, true);
1829 static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
1831 return sbi->total_valid_node_count;
1834 static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
1836 percpu_counter_inc(&sbi->total_valid_inode_count);
1839 static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
1841 percpu_counter_dec(&sbi->total_valid_inode_count);
1844 static inline s64 valid_inode_count(struct f2fs_sb_info *sbi)
1846 return percpu_counter_sum_positive(&sbi->total_valid_inode_count);
1849 static inline struct page *f2fs_grab_cache_page(struct address_space *mapping,
1850 pgoff_t index, bool for_write)
1852 #ifdef CONFIG_F2FS_FAULT_INJECTION
1853 struct page *page = find_lock_page(mapping, index);
1858 if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_ALLOC)) {
1859 f2fs_show_injection_info(FAULT_PAGE_ALLOC);
1864 return grab_cache_page(mapping, index);
1865 return grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS);
1868 static inline struct page *f2fs_pagecache_get_page(
1869 struct address_space *mapping, pgoff_t index,
1870 int fgp_flags, gfp_t gfp_mask)
1872 #ifdef CONFIG_F2FS_FAULT_INJECTION
1873 if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_GET)) {
1874 f2fs_show_injection_info(FAULT_PAGE_GET);
1878 return pagecache_get_page(mapping, index, fgp_flags, gfp_mask);
1881 static inline void f2fs_copy_page(struct page *src, struct page *dst)
1883 char *src_kaddr = kmap(src);
1884 char *dst_kaddr = kmap(dst);
1886 memcpy(dst_kaddr, src_kaddr, PAGE_SIZE);
1891 static inline void f2fs_put_page(struct page *page, int unlock)
1897 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
1903 static inline void f2fs_put_dnode(struct dnode_of_data *dn)
1906 f2fs_put_page(dn->node_page, 1);
1907 if (dn->inode_page && dn->node_page != dn->inode_page)
1908 f2fs_put_page(dn->inode_page, 0);
1909 dn->node_page = NULL;
1910 dn->inode_page = NULL;
1913 static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
1916 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
1919 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
1924 entry = kmem_cache_alloc(cachep, flags);
1926 entry = kmem_cache_alloc(cachep, flags | __GFP_NOFAIL);
1930 static inline struct bio *f2fs_bio_alloc(struct f2fs_sb_info *sbi,
1931 int npages, bool no_fail)
1936 /* No failure on bio allocation */
1937 bio = bio_alloc(GFP_NOIO, npages);
1939 bio = bio_alloc(GFP_NOIO | __GFP_NOFAIL, npages);
1942 #ifdef CONFIG_F2FS_FAULT_INJECTION
1943 if (time_to_inject(sbi, FAULT_ALLOC_BIO)) {
1944 f2fs_show_injection_info(FAULT_ALLOC_BIO);
1948 return bio_alloc(GFP_KERNEL, npages);
1951 static inline void f2fs_radix_tree_insert(struct radix_tree_root *root,
1952 unsigned long index, void *item)
1954 while (radix_tree_insert(root, index, item))
1958 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1960 static inline bool IS_INODE(struct page *page)
1962 struct f2fs_node *p = F2FS_NODE(page);
1964 return RAW_IS_INODE(p);
1967 static inline int offset_in_addr(struct f2fs_inode *i)
1969 return (i->i_inline & F2FS_EXTRA_ATTR) ?
1970 (le16_to_cpu(i->i_extra_isize) / sizeof(__le32)) : 0;
1973 static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
1975 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
1978 static inline int f2fs_has_extra_attr(struct inode *inode);
1979 static inline block_t datablock_addr(struct inode *inode,
1980 struct page *node_page, unsigned int offset)
1982 struct f2fs_node *raw_node;
1985 bool is_inode = IS_INODE(node_page);
1987 raw_node = F2FS_NODE(node_page);
1989 /* from GC path only */
1992 base = offset_in_addr(&raw_node->i);
1993 } else if (f2fs_has_extra_attr(inode) && is_inode) {
1994 base = get_extra_isize(inode);
1997 addr_array = blkaddr_in_node(raw_node);
1998 return le32_to_cpu(addr_array[base + offset]);
2001 static inline int f2fs_test_bit(unsigned int nr, char *addr)
2006 mask = 1 << (7 - (nr & 0x07));
2007 return mask & *addr;
2010 static inline void f2fs_set_bit(unsigned int nr, char *addr)
2015 mask = 1 << (7 - (nr & 0x07));
2019 static inline void f2fs_clear_bit(unsigned int nr, char *addr)
2024 mask = 1 << (7 - (nr & 0x07));
2028 static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
2034 mask = 1 << (7 - (nr & 0x07));
2040 static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
2046 mask = 1 << (7 - (nr & 0x07));
2052 static inline void f2fs_change_bit(unsigned int nr, char *addr)
2057 mask = 1 << (7 - (nr & 0x07));
2061 #define F2FS_REG_FLMASK (~(FS_DIRSYNC_FL | FS_TOPDIR_FL))
2062 #define F2FS_OTHER_FLMASK (FS_NODUMP_FL | FS_NOATIME_FL)
2063 #define F2FS_FL_INHERITED (FS_PROJINHERIT_FL)
2065 static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags)
2069 else if (S_ISREG(mode))
2070 return flags & F2FS_REG_FLMASK;
2072 return flags & F2FS_OTHER_FLMASK;
2075 /* used for f2fs_inode_info->flags */
2077 FI_NEW_INODE, /* indicate newly allocated inode */
2078 FI_DIRTY_INODE, /* indicate inode is dirty or not */
2079 FI_AUTO_RECOVER, /* indicate inode is recoverable */
2080 FI_DIRTY_DIR, /* indicate directory has dirty pages */
2081 FI_INC_LINK, /* need to increment i_nlink */
2082 FI_ACL_MODE, /* indicate acl mode */
2083 FI_NO_ALLOC, /* should not allocate any blocks */
2084 FI_FREE_NID, /* free allocated nide */
2085 FI_NO_EXTENT, /* not to use the extent cache */
2086 FI_INLINE_XATTR, /* used for inline xattr */
2087 FI_INLINE_DATA, /* used for inline data*/
2088 FI_INLINE_DENTRY, /* used for inline dentry */
2089 FI_APPEND_WRITE, /* inode has appended data */
2090 FI_UPDATE_WRITE, /* inode has in-place-update data */
2091 FI_NEED_IPU, /* used for ipu per file */
2092 FI_ATOMIC_FILE, /* indicate atomic file */
2093 FI_ATOMIC_COMMIT, /* indicate the state of atomical committing */
2094 FI_VOLATILE_FILE, /* indicate volatile file */
2095 FI_FIRST_BLOCK_WRITTEN, /* indicate #0 data block was written */
2096 FI_DROP_CACHE, /* drop dirty page cache */
2097 FI_DATA_EXIST, /* indicate data exists */
2098 FI_INLINE_DOTS, /* indicate inline dot dentries */
2099 FI_DO_DEFRAG, /* indicate defragment is running */
2100 FI_DIRTY_FILE, /* indicate regular/symlink has dirty pages */
2101 FI_NO_PREALLOC, /* indicate skipped preallocated blocks */
2102 FI_HOT_DATA, /* indicate file is hot */
2103 FI_EXTRA_ATTR, /* indicate file has extra attribute */
2104 FI_PROJ_INHERIT, /* indicate file inherits projectid */
2107 static inline void __mark_inode_dirty_flag(struct inode *inode,
2111 case FI_INLINE_XATTR:
2112 case FI_INLINE_DATA:
2113 case FI_INLINE_DENTRY:
2117 case FI_INLINE_DOTS:
2118 f2fs_mark_inode_dirty_sync(inode, true);
2122 static inline void set_inode_flag(struct inode *inode, int flag)
2124 if (!test_bit(flag, &F2FS_I(inode)->flags))
2125 set_bit(flag, &F2FS_I(inode)->flags);
2126 __mark_inode_dirty_flag(inode, flag, true);
2129 static inline int is_inode_flag_set(struct inode *inode, int flag)
2131 return test_bit(flag, &F2FS_I(inode)->flags);
2134 static inline void clear_inode_flag(struct inode *inode, int flag)
2136 if (test_bit(flag, &F2FS_I(inode)->flags))
2137 clear_bit(flag, &F2FS_I(inode)->flags);
2138 __mark_inode_dirty_flag(inode, flag, false);
2141 static inline void set_acl_inode(struct inode *inode, umode_t mode)
2143 F2FS_I(inode)->i_acl_mode = mode;
2144 set_inode_flag(inode, FI_ACL_MODE);
2145 f2fs_mark_inode_dirty_sync(inode, false);
2148 static inline void f2fs_i_links_write(struct inode *inode, bool inc)
2154 f2fs_mark_inode_dirty_sync(inode, true);
2157 static inline void f2fs_i_blocks_write(struct inode *inode,
2158 block_t diff, bool add, bool claim)
2160 bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
2161 bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);
2163 /* add = 1, claim = 1 should be dquot_reserve_block in pair */
2166 dquot_claim_block(inode, diff);
2168 dquot_alloc_block_nofail(inode, diff);
2170 dquot_free_block(inode, diff);
2173 f2fs_mark_inode_dirty_sync(inode, true);
2174 if (clean || recover)
2175 set_inode_flag(inode, FI_AUTO_RECOVER);
2178 static inline void f2fs_i_size_write(struct inode *inode, loff_t i_size)
2180 bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
2181 bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);
2183 if (i_size_read(inode) == i_size)
2186 i_size_write(inode, i_size);
2187 f2fs_mark_inode_dirty_sync(inode, true);
2188 if (clean || recover)
2189 set_inode_flag(inode, FI_AUTO_RECOVER);
2192 static inline void f2fs_i_depth_write(struct inode *inode, unsigned int depth)
2194 F2FS_I(inode)->i_current_depth = depth;
2195 f2fs_mark_inode_dirty_sync(inode, true);
2198 static inline void f2fs_i_xnid_write(struct inode *inode, nid_t xnid)
2200 F2FS_I(inode)->i_xattr_nid = xnid;
2201 f2fs_mark_inode_dirty_sync(inode, true);
2204 static inline void f2fs_i_pino_write(struct inode *inode, nid_t pino)
2206 F2FS_I(inode)->i_pino = pino;
2207 f2fs_mark_inode_dirty_sync(inode, true);
2210 static inline void get_inline_info(struct inode *inode, struct f2fs_inode *ri)
2212 struct f2fs_inode_info *fi = F2FS_I(inode);
2214 if (ri->i_inline & F2FS_INLINE_XATTR)
2215 set_bit(FI_INLINE_XATTR, &fi->flags);
2216 if (ri->i_inline & F2FS_INLINE_DATA)
2217 set_bit(FI_INLINE_DATA, &fi->flags);
2218 if (ri->i_inline & F2FS_INLINE_DENTRY)
2219 set_bit(FI_INLINE_DENTRY, &fi->flags);
2220 if (ri->i_inline & F2FS_DATA_EXIST)
2221 set_bit(FI_DATA_EXIST, &fi->flags);
2222 if (ri->i_inline & F2FS_INLINE_DOTS)
2223 set_bit(FI_INLINE_DOTS, &fi->flags);
2224 if (ri->i_inline & F2FS_EXTRA_ATTR)
2225 set_bit(FI_EXTRA_ATTR, &fi->flags);
2228 static inline void set_raw_inline(struct inode *inode, struct f2fs_inode *ri)
2232 if (is_inode_flag_set(inode, FI_INLINE_XATTR))
2233 ri->i_inline |= F2FS_INLINE_XATTR;
2234 if (is_inode_flag_set(inode, FI_INLINE_DATA))
2235 ri->i_inline |= F2FS_INLINE_DATA;
2236 if (is_inode_flag_set(inode, FI_INLINE_DENTRY))
2237 ri->i_inline |= F2FS_INLINE_DENTRY;
2238 if (is_inode_flag_set(inode, FI_DATA_EXIST))
2239 ri->i_inline |= F2FS_DATA_EXIST;
2240 if (is_inode_flag_set(inode, FI_INLINE_DOTS))
2241 ri->i_inline |= F2FS_INLINE_DOTS;
2242 if (is_inode_flag_set(inode, FI_EXTRA_ATTR))
2243 ri->i_inline |= F2FS_EXTRA_ATTR;
2246 static inline int f2fs_has_extra_attr(struct inode *inode)
2248 return is_inode_flag_set(inode, FI_EXTRA_ATTR);
2251 static inline int f2fs_has_inline_xattr(struct inode *inode)
2253 return is_inode_flag_set(inode, FI_INLINE_XATTR);
2256 static inline unsigned int addrs_per_inode(struct inode *inode)
2258 return CUR_ADDRS_PER_INODE(inode) - F2FS_INLINE_XATTR_ADDRS(inode);
2261 static inline void *inline_xattr_addr(struct inode *inode, struct page *page)
2263 struct f2fs_inode *ri = F2FS_INODE(page);
2265 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
2266 F2FS_INLINE_XATTR_ADDRS(inode)]);
2269 static inline int inline_xattr_size(struct inode *inode)
2271 return get_inline_xattr_addrs(inode) * sizeof(__le32);
2274 static inline int f2fs_has_inline_data(struct inode *inode)
2276 return is_inode_flag_set(inode, FI_INLINE_DATA);
2279 static inline int f2fs_exist_data(struct inode *inode)
2281 return is_inode_flag_set(inode, FI_DATA_EXIST);
2284 static inline int f2fs_has_inline_dots(struct inode *inode)
2286 return is_inode_flag_set(inode, FI_INLINE_DOTS);
2289 static inline bool f2fs_is_atomic_file(struct inode *inode)
2291 return is_inode_flag_set(inode, FI_ATOMIC_FILE);
2294 static inline bool f2fs_is_commit_atomic_write(struct inode *inode)
2296 return is_inode_flag_set(inode, FI_ATOMIC_COMMIT);
2299 static inline bool f2fs_is_volatile_file(struct inode *inode)
2301 return is_inode_flag_set(inode, FI_VOLATILE_FILE);
2304 static inline bool f2fs_is_first_block_written(struct inode *inode)
2306 return is_inode_flag_set(inode, FI_FIRST_BLOCK_WRITTEN);
2309 static inline bool f2fs_is_drop_cache(struct inode *inode)
2311 return is_inode_flag_set(inode, FI_DROP_CACHE);
2314 static inline void *inline_data_addr(struct inode *inode, struct page *page)
2316 struct f2fs_inode *ri = F2FS_INODE(page);
2317 int extra_size = get_extra_isize(inode);
2319 return (void *)&(ri->i_addr[extra_size + DEF_INLINE_RESERVED_SIZE]);
2322 static inline int f2fs_has_inline_dentry(struct inode *inode)
2324 return is_inode_flag_set(inode, FI_INLINE_DENTRY);
2327 static inline void f2fs_dentry_kunmap(struct inode *dir, struct page *page)
2329 if (!f2fs_has_inline_dentry(dir))
2333 static inline int is_file(struct inode *inode, int type)
2335 return F2FS_I(inode)->i_advise & type;
2338 static inline void set_file(struct inode *inode, int type)
2340 F2FS_I(inode)->i_advise |= type;
2341 f2fs_mark_inode_dirty_sync(inode, true);
2344 static inline void clear_file(struct inode *inode, int type)
2346 F2FS_I(inode)->i_advise &= ~type;
2347 f2fs_mark_inode_dirty_sync(inode, true);
2350 static inline bool f2fs_skip_inode_update(struct inode *inode, int dsync)
2355 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2357 spin_lock(&sbi->inode_lock[DIRTY_META]);
2358 ret = list_empty(&F2FS_I(inode)->gdirty_list);
2359 spin_unlock(&sbi->inode_lock[DIRTY_META]);
2362 if (!is_inode_flag_set(inode, FI_AUTO_RECOVER) ||
2363 file_keep_isize(inode) ||
2364 i_size_read(inode) & PAGE_MASK)
2367 down_read(&F2FS_I(inode)->i_sem);
2368 ret = F2FS_I(inode)->last_disk_size == i_size_read(inode);
2369 up_read(&F2FS_I(inode)->i_sem);
2374 static inline int f2fs_readonly(struct super_block *sb)
2376 return sb->s_flags & MS_RDONLY;
2379 static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
2381 return is_set_ckpt_flags(sbi, CP_ERROR_FLAG);
2384 static inline bool is_dot_dotdot(const struct qstr *str)
2386 if (str->len == 1 && str->name[0] == '.')
2389 if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.')
2395 static inline bool f2fs_may_extent_tree(struct inode *inode)
2397 if (!test_opt(F2FS_I_SB(inode), EXTENT_CACHE) ||
2398 is_inode_flag_set(inode, FI_NO_EXTENT))
2401 return S_ISREG(inode->i_mode);
2404 static inline void *f2fs_kmalloc(struct f2fs_sb_info *sbi,
2405 size_t size, gfp_t flags)
2407 #ifdef CONFIG_F2FS_FAULT_INJECTION
2408 if (time_to_inject(sbi, FAULT_KMALLOC)) {
2409 f2fs_show_injection_info(FAULT_KMALLOC);
2413 return kmalloc(size, flags);
2416 static inline int get_extra_isize(struct inode *inode)
2418 return F2FS_I(inode)->i_extra_isize / sizeof(__le32);
2421 static inline int f2fs_sb_has_flexible_inline_xattr(struct super_block *sb);
2422 static inline int get_inline_xattr_addrs(struct inode *inode)
2424 return F2FS_I(inode)->i_inline_xattr_size;
2427 #define get_inode_mode(i) \
2428 ((is_inode_flag_set(i, FI_ACL_MODE)) ? \
2429 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
2431 #define F2FS_TOTAL_EXTRA_ATTR_SIZE \
2432 (offsetof(struct f2fs_inode, i_extra_end) - \
2433 offsetof(struct f2fs_inode, i_extra_isize)) \
2435 #define F2FS_OLD_ATTRIBUTE_SIZE (offsetof(struct f2fs_inode, i_addr))
2436 #define F2FS_FITS_IN_INODE(f2fs_inode, extra_isize, field) \
2437 ((offsetof(typeof(*f2fs_inode), field) + \
2438 sizeof((f2fs_inode)->field)) \
2439 <= (F2FS_OLD_ATTRIBUTE_SIZE + extra_isize)) \
2441 static inline void f2fs_reset_iostat(struct f2fs_sb_info *sbi)
2445 spin_lock(&sbi->iostat_lock);
2446 for (i = 0; i < NR_IO_TYPE; i++)
2447 sbi->write_iostat[i] = 0;
2448 spin_unlock(&sbi->iostat_lock);
2451 static inline void f2fs_update_iostat(struct f2fs_sb_info *sbi,
2452 enum iostat_type type, unsigned long long io_bytes)
2454 if (!sbi->iostat_enable)
2456 spin_lock(&sbi->iostat_lock);
2457 sbi->write_iostat[type] += io_bytes;
2459 if (type == APP_WRITE_IO || type == APP_DIRECT_IO)
2460 sbi->write_iostat[APP_BUFFERED_IO] =
2461 sbi->write_iostat[APP_WRITE_IO] -
2462 sbi->write_iostat[APP_DIRECT_IO];
2463 spin_unlock(&sbi->iostat_lock);
2469 int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync);
2470 void truncate_data_blocks(struct dnode_of_data *dn);
2471 int truncate_blocks(struct inode *inode, u64 from, bool lock);
2472 int f2fs_truncate(struct inode *inode);
2473 int f2fs_getattr(const struct path *path, struct kstat *stat,
2474 u32 request_mask, unsigned int flags);
2475 int f2fs_setattr(struct dentry *dentry, struct iattr *attr);
2476 int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end);
2477 int truncate_data_blocks_range(struct dnode_of_data *dn, int count);
2478 long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
2479 long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
2484 void f2fs_set_inode_flags(struct inode *inode);
2485 bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page);
2486 void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page);
2487 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino);
2488 struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino);
2489 int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink);
2490 int update_inode(struct inode *inode, struct page *node_page);
2491 int update_inode_page(struct inode *inode);
2492 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc);
2493 void f2fs_evict_inode(struct inode *inode);
2494 void handle_failed_inode(struct inode *inode);
2499 struct dentry *f2fs_get_parent(struct dentry *child);
2504 void set_de_type(struct f2fs_dir_entry *de, umode_t mode);
2505 unsigned char get_de_type(struct f2fs_dir_entry *de);
2506 struct f2fs_dir_entry *find_target_dentry(struct fscrypt_name *fname,
2507 f2fs_hash_t namehash, int *max_slots,
2508 struct f2fs_dentry_ptr *d);
2509 int f2fs_fill_dentries(struct dir_context *ctx, struct f2fs_dentry_ptr *d,
2510 unsigned int start_pos, struct fscrypt_str *fstr);
2511 void do_make_empty_dir(struct inode *inode, struct inode *parent,
2512 struct f2fs_dentry_ptr *d);
2513 struct page *init_inode_metadata(struct inode *inode, struct inode *dir,
2514 const struct qstr *new_name,
2515 const struct qstr *orig_name, struct page *dpage);
2516 void update_parent_metadata(struct inode *dir, struct inode *inode,
2517 unsigned int current_depth);
2518 int room_for_filename(const void *bitmap, int slots, int max_slots);
2519 void f2fs_drop_nlink(struct inode *dir, struct inode *inode);
2520 struct f2fs_dir_entry *__f2fs_find_entry(struct inode *dir,
2521 struct fscrypt_name *fname, struct page **res_page);
2522 struct f2fs_dir_entry *f2fs_find_entry(struct inode *dir,
2523 const struct qstr *child, struct page **res_page);
2524 struct f2fs_dir_entry *f2fs_parent_dir(struct inode *dir, struct page **p);
2525 ino_t f2fs_inode_by_name(struct inode *dir, const struct qstr *qstr,
2526 struct page **page);
2527 void f2fs_set_link(struct inode *dir, struct f2fs_dir_entry *de,
2528 struct page *page, struct inode *inode);
2529 void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *d,
2530 const struct qstr *name, f2fs_hash_t name_hash,
2531 unsigned int bit_pos);
2532 int f2fs_add_regular_entry(struct inode *dir, const struct qstr *new_name,
2533 const struct qstr *orig_name,
2534 struct inode *inode, nid_t ino, umode_t mode);
2535 int __f2fs_do_add_link(struct inode *dir, struct fscrypt_name *fname,
2536 struct inode *inode, nid_t ino, umode_t mode);
2537 int __f2fs_add_link(struct inode *dir, const struct qstr *name,
2538 struct inode *inode, nid_t ino, umode_t mode);
2539 void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page,
2540 struct inode *dir, struct inode *inode);
2541 int f2fs_do_tmpfile(struct inode *inode, struct inode *dir);
2542 bool f2fs_empty_dir(struct inode *dir);
2544 static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
2546 return __f2fs_add_link(d_inode(dentry->d_parent), &dentry->d_name,
2547 inode, inode->i_ino, inode->i_mode);
2553 int f2fs_inode_dirtied(struct inode *inode, bool sync);
2554 void f2fs_inode_synced(struct inode *inode);
2555 int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly);
2556 void f2fs_quota_off_umount(struct super_block *sb);
2557 int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover);
2558 int f2fs_sync_fs(struct super_block *sb, int sync);
2559 extern __printf(3, 4)
2560 void f2fs_msg(struct super_block *sb, const char *level, const char *fmt, ...);
2561 int sanity_check_ckpt(struct f2fs_sb_info *sbi);
2566 f2fs_hash_t f2fs_dentry_hash(const struct qstr *name_info,
2567 struct fscrypt_name *fname);
2572 struct dnode_of_data;
2575 bool available_free_memory(struct f2fs_sb_info *sbi, int type);
2576 int need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid);
2577 bool is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid);
2578 bool need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino);
2579 void get_node_info(struct f2fs_sb_info *sbi, nid_t nid, struct node_info *ni);
2580 pgoff_t get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs);
2581 int get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode);
2582 int truncate_inode_blocks(struct inode *inode, pgoff_t from);
2583 int truncate_xattr_node(struct inode *inode);
2584 int wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino);
2585 int remove_inode_page(struct inode *inode);
2586 struct page *new_inode_page(struct inode *inode);
2587 struct page *new_node_page(struct dnode_of_data *dn, unsigned int ofs);
2588 void ra_node_page(struct f2fs_sb_info *sbi, nid_t nid);
2589 struct page *get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid);
2590 struct page *get_node_page_ra(struct page *parent, int start);
2591 void move_node_page(struct page *node_page, int gc_type);
2592 int fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode,
2593 struct writeback_control *wbc, bool atomic);
2594 int sync_node_pages(struct f2fs_sb_info *sbi, struct writeback_control *wbc,
2595 bool do_balance, enum iostat_type io_type);
2596 void build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount);
2597 bool alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid);
2598 void alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid);
2599 void alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid);
2600 int try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink);
2601 void recover_inline_xattr(struct inode *inode, struct page *page);
2602 int recover_xattr_data(struct inode *inode, struct page *page,
2604 int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page);
2605 int restore_node_summary(struct f2fs_sb_info *sbi,
2606 unsigned int segno, struct f2fs_summary_block *sum);
2607 void flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc);
2608 int build_node_manager(struct f2fs_sb_info *sbi);
2609 void destroy_node_manager(struct f2fs_sb_info *sbi);
2610 int __init create_node_manager_caches(void);
2611 void destroy_node_manager_caches(void);
2616 bool need_SSR(struct f2fs_sb_info *sbi);
2617 void register_inmem_page(struct inode *inode, struct page *page);
2618 void drop_inmem_pages_all(struct f2fs_sb_info *sbi);
2619 void drop_inmem_pages(struct inode *inode);
2620 void drop_inmem_page(struct inode *inode, struct page *page);
2621 int commit_inmem_pages(struct inode *inode);
2622 void f2fs_balance_fs(struct f2fs_sb_info *sbi, bool need);
2623 void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi);
2624 int f2fs_issue_flush(struct f2fs_sb_info *sbi, nid_t ino);
2625 int create_flush_cmd_control(struct f2fs_sb_info *sbi);
2626 int f2fs_flush_device_cache(struct f2fs_sb_info *sbi);
2627 void destroy_flush_cmd_control(struct f2fs_sb_info *sbi, bool free);
2628 void invalidate_blocks(struct f2fs_sb_info *sbi, block_t addr);
2629 bool is_checkpointed_data(struct f2fs_sb_info *sbi, block_t blkaddr);
2630 void init_discard_policy(struct discard_policy *dpolicy, int discard_type,
2631 unsigned int granularity);
2632 void stop_discard_thread(struct f2fs_sb_info *sbi);
2633 bool f2fs_wait_discard_bios(struct f2fs_sb_info *sbi);
2634 void clear_prefree_segments(struct f2fs_sb_info *sbi, struct cp_control *cpc);
2635 void release_discard_addrs(struct f2fs_sb_info *sbi);
2636 int npages_for_summary_flush(struct f2fs_sb_info *sbi, bool for_ra);
2637 void allocate_new_segments(struct f2fs_sb_info *sbi);
2638 int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range);
2639 bool exist_trim_candidates(struct f2fs_sb_info *sbi, struct cp_control *cpc);
2640 struct page *get_sum_page(struct f2fs_sb_info *sbi, unsigned int segno);
2641 void update_meta_page(struct f2fs_sb_info *sbi, void *src, block_t blk_addr);
2642 void write_meta_page(struct f2fs_sb_info *sbi, struct page *page,
2643 enum iostat_type io_type);
2644 void write_node_page(unsigned int nid, struct f2fs_io_info *fio);
2645 void write_data_page(struct dnode_of_data *dn, struct f2fs_io_info *fio);
2646 int rewrite_data_page(struct f2fs_io_info *fio);
2647 void __f2fs_replace_block(struct f2fs_sb_info *sbi, struct f2fs_summary *sum,
2648 block_t old_blkaddr, block_t new_blkaddr,
2649 bool recover_curseg, bool recover_newaddr);
2650 void f2fs_replace_block(struct f2fs_sb_info *sbi, struct dnode_of_data *dn,
2651 block_t old_addr, block_t new_addr,
2652 unsigned char version, bool recover_curseg,
2653 bool recover_newaddr);
2654 void allocate_data_block(struct f2fs_sb_info *sbi, struct page *page,
2655 block_t old_blkaddr, block_t *new_blkaddr,
2656 struct f2fs_summary *sum, int type,
2657 struct f2fs_io_info *fio, bool add_list);
2658 void f2fs_wait_on_page_writeback(struct page *page,
2659 enum page_type type, bool ordered);
2660 void f2fs_wait_on_block_writeback(struct f2fs_sb_info *sbi, block_t blkaddr);
2661 void write_data_summaries(struct f2fs_sb_info *sbi, block_t start_blk);
2662 void write_node_summaries(struct f2fs_sb_info *sbi, block_t start_blk);
2663 int lookup_journal_in_cursum(struct f2fs_journal *journal, int type,
2664 unsigned int val, int alloc);
2665 void flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc);
2666 int build_segment_manager(struct f2fs_sb_info *sbi);
2667 void destroy_segment_manager(struct f2fs_sb_info *sbi);
2668 int __init create_segment_manager_caches(void);
2669 void destroy_segment_manager_caches(void);
2674 void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io);
2675 struct page *grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index);
2676 struct page *get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index);
2677 struct page *get_tmp_page(struct f2fs_sb_info *sbi, pgoff_t index);
2678 bool is_valid_blkaddr(struct f2fs_sb_info *sbi, block_t blkaddr, int type);
2679 int ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages,
2680 int type, bool sync);
2681 void ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index);
2682 long sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type,
2683 long nr_to_write, enum iostat_type io_type);
2684 void add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type);
2685 void remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type);
2686 void release_ino_entry(struct f2fs_sb_info *sbi, bool all);
2687 bool exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode);
2688 void set_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
2689 unsigned int devidx, int type);
2690 bool is_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
2691 unsigned int devidx, int type);
2692 int f2fs_sync_inode_meta(struct f2fs_sb_info *sbi);
2693 int acquire_orphan_inode(struct f2fs_sb_info *sbi);
2694 void release_orphan_inode(struct f2fs_sb_info *sbi);
2695 void add_orphan_inode(struct inode *inode);
2696 void remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino);
2697 int recover_orphan_inodes(struct f2fs_sb_info *sbi);
2698 int get_valid_checkpoint(struct f2fs_sb_info *sbi);
2699 void update_dirty_page(struct inode *inode, struct page *page);
2700 void remove_dirty_inode(struct inode *inode);
2701 int sync_dirty_inodes(struct f2fs_sb_info *sbi, enum inode_type type);
2702 int write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc);
2703 void init_ino_entry_info(struct f2fs_sb_info *sbi);
2704 int __init create_checkpoint_caches(void);
2705 void destroy_checkpoint_caches(void);
2710 void f2fs_submit_merged_write(struct f2fs_sb_info *sbi, enum page_type type);
2711 void f2fs_submit_merged_write_cond(struct f2fs_sb_info *sbi,
2712 struct inode *inode, nid_t ino, pgoff_t idx,
2713 enum page_type type);
2714 void f2fs_flush_merged_writes(struct f2fs_sb_info *sbi);
2715 int f2fs_submit_page_bio(struct f2fs_io_info *fio);
2716 int f2fs_submit_page_write(struct f2fs_io_info *fio);
2717 struct block_device *f2fs_target_device(struct f2fs_sb_info *sbi,
2718 block_t blk_addr, struct bio *bio);
2719 int f2fs_target_device_index(struct f2fs_sb_info *sbi, block_t blkaddr);
2720 void set_data_blkaddr(struct dnode_of_data *dn);
2721 void f2fs_update_data_blkaddr(struct dnode_of_data *dn, block_t blkaddr);
2722 int reserve_new_blocks(struct dnode_of_data *dn, blkcnt_t count);
2723 int reserve_new_block(struct dnode_of_data *dn);
2724 int f2fs_get_block(struct dnode_of_data *dn, pgoff_t index);
2725 int f2fs_preallocate_blocks(struct kiocb *iocb, struct iov_iter *from);
2726 int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index);
2727 struct page *get_read_data_page(struct inode *inode, pgoff_t index,
2728 int op_flags, bool for_write);
2729 struct page *find_data_page(struct inode *inode, pgoff_t index);
2730 struct page *get_lock_data_page(struct inode *inode, pgoff_t index,
2732 struct page *get_new_data_page(struct inode *inode,
2733 struct page *ipage, pgoff_t index, bool new_i_size);
2734 int do_write_data_page(struct f2fs_io_info *fio);
2735 int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map,
2736 int create, int flag);
2737 int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
2738 u64 start, u64 len);
2739 void f2fs_set_page_dirty_nobuffers(struct page *page);
2740 int __f2fs_write_data_pages(struct address_space *mapping,
2741 struct writeback_control *wbc,
2742 enum iostat_type io_type);
2743 void f2fs_invalidate_page(struct page *page, unsigned int offset,
2744 unsigned int length);
2745 int f2fs_release_page(struct page *page, gfp_t wait);
2746 #ifdef CONFIG_MIGRATION
2747 int f2fs_migrate_page(struct address_space *mapping, struct page *newpage,
2748 struct page *page, enum migrate_mode mode);
2754 int start_gc_thread(struct f2fs_sb_info *sbi);
2755 void stop_gc_thread(struct f2fs_sb_info *sbi);
2756 block_t start_bidx_of_node(unsigned int node_ofs, struct inode *inode);
2757 int f2fs_gc(struct f2fs_sb_info *sbi, bool sync, bool background,
2758 unsigned int segno);
2759 void build_gc_manager(struct f2fs_sb_info *sbi);
2764 int recover_fsync_data(struct f2fs_sb_info *sbi, bool check_only);
2765 bool space_for_roll_forward(struct f2fs_sb_info *sbi);
2770 #ifdef CONFIG_F2FS_STAT_FS
2771 struct f2fs_stat_info {
2772 struct list_head stat_list;
2773 struct f2fs_sb_info *sbi;
2774 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
2775 int main_area_segs, main_area_sections, main_area_zones;
2776 unsigned long long hit_largest, hit_cached, hit_rbtree;
2777 unsigned long long hit_total, total_ext;
2778 int ext_tree, zombie_tree, ext_node;
2779 int ndirty_node, ndirty_dent, ndirty_meta, ndirty_imeta;
2780 int ndirty_data, ndirty_qdata;
2782 unsigned int ndirty_dirs, ndirty_files, nquota_files, ndirty_all;
2783 int nats, dirty_nats, sits, dirty_sits;
2784 int free_nids, avail_nids, alloc_nids;
2785 int total_count, utilization;
2786 int bg_gc, nr_wb_cp_data, nr_wb_data;
2787 int nr_flushing, nr_flushed, flush_list_empty;
2788 int nr_discarding, nr_discarded;
2790 unsigned int undiscard_blks;
2791 int inline_xattr, inline_inode, inline_dir, append, update, orphans;
2792 int aw_cnt, max_aw_cnt, vw_cnt, max_vw_cnt;
2793 unsigned int valid_count, valid_node_count, valid_inode_count, discard_blks;
2794 unsigned int bimodal, avg_vblocks;
2795 int util_free, util_valid, util_invalid;
2796 int rsvd_segs, overp_segs;
2797 int dirty_count, node_pages, meta_pages;
2798 int prefree_count, call_count, cp_count, bg_cp_count;
2799 int tot_segs, node_segs, data_segs, free_segs, free_secs;
2800 int bg_node_segs, bg_data_segs;
2801 int tot_blks, data_blks, node_blks;
2802 int bg_data_blks, bg_node_blks;
2803 int curseg[NR_CURSEG_TYPE];
2804 int cursec[NR_CURSEG_TYPE];
2805 int curzone[NR_CURSEG_TYPE];
2807 unsigned int segment_count[2];
2808 unsigned int block_count[2];
2809 unsigned int inplace_count;
2810 unsigned long long base_mem, cache_mem, page_mem;
2813 static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
2815 return (struct f2fs_stat_info *)sbi->stat_info;
2818 #define stat_inc_cp_count(si) ((si)->cp_count++)
2819 #define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++)
2820 #define stat_inc_call_count(si) ((si)->call_count++)
2821 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
2822 #define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++)
2823 #define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--)
2824 #define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext))
2825 #define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree))
2826 #define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest))
2827 #define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached))
2828 #define stat_inc_inline_xattr(inode) \
2830 if (f2fs_has_inline_xattr(inode)) \
2831 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
2833 #define stat_dec_inline_xattr(inode) \
2835 if (f2fs_has_inline_xattr(inode)) \
2836 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
2838 #define stat_inc_inline_inode(inode) \
2840 if (f2fs_has_inline_data(inode)) \
2841 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
2843 #define stat_dec_inline_inode(inode) \
2845 if (f2fs_has_inline_data(inode)) \
2846 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
2848 #define stat_inc_inline_dir(inode) \
2850 if (f2fs_has_inline_dentry(inode)) \
2851 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
2853 #define stat_dec_inline_dir(inode) \
2855 if (f2fs_has_inline_dentry(inode)) \
2856 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
2858 #define stat_inc_seg_type(sbi, curseg) \
2859 ((sbi)->segment_count[(curseg)->alloc_type]++)
2860 #define stat_inc_block_count(sbi, curseg) \
2861 ((sbi)->block_count[(curseg)->alloc_type]++)
2862 #define stat_inc_inplace_blocks(sbi) \
2863 (atomic_inc(&(sbi)->inplace_count))
2864 #define stat_inc_atomic_write(inode) \
2865 (atomic_inc(&F2FS_I_SB(inode)->aw_cnt))
2866 #define stat_dec_atomic_write(inode) \
2867 (atomic_dec(&F2FS_I_SB(inode)->aw_cnt))
2868 #define stat_update_max_atomic_write(inode) \
2870 int cur = atomic_read(&F2FS_I_SB(inode)->aw_cnt); \
2871 int max = atomic_read(&F2FS_I_SB(inode)->max_aw_cnt); \
2873 atomic_set(&F2FS_I_SB(inode)->max_aw_cnt, cur); \
2875 #define stat_inc_volatile_write(inode) \
2876 (atomic_inc(&F2FS_I_SB(inode)->vw_cnt))
2877 #define stat_dec_volatile_write(inode) \
2878 (atomic_dec(&F2FS_I_SB(inode)->vw_cnt))
2879 #define stat_update_max_volatile_write(inode) \
2881 int cur = atomic_read(&F2FS_I_SB(inode)->vw_cnt); \
2882 int max = atomic_read(&F2FS_I_SB(inode)->max_vw_cnt); \
2884 atomic_set(&F2FS_I_SB(inode)->max_vw_cnt, cur); \
2886 #define stat_inc_seg_count(sbi, type, gc_type) \
2888 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2890 if ((type) == SUM_TYPE_DATA) { \
2892 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
2895 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
2899 #define stat_inc_tot_blk_count(si, blks) \
2900 ((si)->tot_blks += (blks))
2902 #define stat_inc_data_blk_count(sbi, blks, gc_type) \
2904 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2905 stat_inc_tot_blk_count(si, blks); \
2906 si->data_blks += (blks); \
2907 si->bg_data_blks += ((gc_type) == BG_GC) ? (blks) : 0; \
2910 #define stat_inc_node_blk_count(sbi, blks, gc_type) \
2912 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2913 stat_inc_tot_blk_count(si, blks); \
2914 si->node_blks += (blks); \
2915 si->bg_node_blks += ((gc_type) == BG_GC) ? (blks) : 0; \
2918 int f2fs_build_stats(struct f2fs_sb_info *sbi);
2919 void f2fs_destroy_stats(struct f2fs_sb_info *sbi);
2920 int __init f2fs_create_root_stats(void);
2921 void f2fs_destroy_root_stats(void);
2923 #define stat_inc_cp_count(si) do { } while (0)
2924 #define stat_inc_bg_cp_count(si) do { } while (0)
2925 #define stat_inc_call_count(si) do { } while (0)
2926 #define stat_inc_bggc_count(si) do { } while (0)
2927 #define stat_inc_dirty_inode(sbi, type) do { } while (0)
2928 #define stat_dec_dirty_inode(sbi, type) do { } while (0)
2929 #define stat_inc_total_hit(sb) do { } while (0)
2930 #define stat_inc_rbtree_node_hit(sb) do { } while (0)
2931 #define stat_inc_largest_node_hit(sbi) do { } while (0)
2932 #define stat_inc_cached_node_hit(sbi) do { } while (0)
2933 #define stat_inc_inline_xattr(inode) do { } while (0)
2934 #define stat_dec_inline_xattr(inode) do { } while (0)
2935 #define stat_inc_inline_inode(inode) do { } while (0)
2936 #define stat_dec_inline_inode(inode) do { } while (0)
2937 #define stat_inc_inline_dir(inode) do { } while (0)
2938 #define stat_dec_inline_dir(inode) do { } while (0)
2939 #define stat_inc_atomic_write(inode) do { } while (0)
2940 #define stat_dec_atomic_write(inode) do { } while (0)
2941 #define stat_update_max_atomic_write(inode) do { } while (0)
2942 #define stat_inc_volatile_write(inode) do { } while (0)
2943 #define stat_dec_volatile_write(inode) do { } while (0)
2944 #define stat_update_max_volatile_write(inode) do { } while (0)
2945 #define stat_inc_seg_type(sbi, curseg) do { } while (0)
2946 #define stat_inc_block_count(sbi, curseg) do { } while (0)
2947 #define stat_inc_inplace_blocks(sbi) do { } while (0)
2948 #define stat_inc_seg_count(sbi, type, gc_type) do { } while (0)
2949 #define stat_inc_tot_blk_count(si, blks) do { } while (0)
2950 #define stat_inc_data_blk_count(sbi, blks, gc_type) do { } while (0)
2951 #define stat_inc_node_blk_count(sbi, blks, gc_type) do { } while (0)
2953 static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
2954 static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
2955 static inline int __init f2fs_create_root_stats(void) { return 0; }
2956 static inline void f2fs_destroy_root_stats(void) { }
2959 extern const struct file_operations f2fs_dir_operations;
2960 extern const struct file_operations f2fs_file_operations;
2961 extern const struct inode_operations f2fs_file_inode_operations;
2962 extern const struct address_space_operations f2fs_dblock_aops;
2963 extern const struct address_space_operations f2fs_node_aops;
2964 extern const struct address_space_operations f2fs_meta_aops;
2965 extern const struct inode_operations f2fs_dir_inode_operations;
2966 extern const struct inode_operations f2fs_symlink_inode_operations;
2967 extern const struct inode_operations f2fs_encrypted_symlink_inode_operations;
2968 extern const struct inode_operations f2fs_special_inode_operations;
2969 extern struct kmem_cache *inode_entry_slab;
2974 bool f2fs_may_inline_data(struct inode *inode);
2975 bool f2fs_may_inline_dentry(struct inode *inode);
2976 void read_inline_data(struct page *page, struct page *ipage);
2977 void truncate_inline_inode(struct inode *inode, struct page *ipage, u64 from);
2978 int f2fs_read_inline_data(struct inode *inode, struct page *page);
2979 int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page);
2980 int f2fs_convert_inline_inode(struct inode *inode);
2981 int f2fs_write_inline_data(struct inode *inode, struct page *page);
2982 bool recover_inline_data(struct inode *inode, struct page *npage);
2983 struct f2fs_dir_entry *find_in_inline_dir(struct inode *dir,
2984 struct fscrypt_name *fname, struct page **res_page);
2985 int make_empty_inline_dir(struct inode *inode, struct inode *parent,
2986 struct page *ipage);
2987 int f2fs_add_inline_entry(struct inode *dir, const struct qstr *new_name,
2988 const struct qstr *orig_name,
2989 struct inode *inode, nid_t ino, umode_t mode);
2990 void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry, struct page *page,
2991 struct inode *dir, struct inode *inode);
2992 bool f2fs_empty_inline_dir(struct inode *dir);
2993 int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx,
2994 struct fscrypt_str *fstr);
2995 int f2fs_inline_data_fiemap(struct inode *inode,
2996 struct fiemap_extent_info *fieinfo,
2997 __u64 start, __u64 len);
3002 unsigned long f2fs_shrink_count(struct shrinker *shrink,
3003 struct shrink_control *sc);
3004 unsigned long f2fs_shrink_scan(struct shrinker *shrink,
3005 struct shrink_control *sc);
3006 void f2fs_join_shrinker(struct f2fs_sb_info *sbi);
3007 void f2fs_leave_shrinker(struct f2fs_sb_info *sbi);
3012 struct rb_entry *__lookup_rb_tree(struct rb_root *root,
3013 struct rb_entry *cached_re, unsigned int ofs);
3014 struct rb_node **__lookup_rb_tree_for_insert(struct f2fs_sb_info *sbi,
3015 struct rb_root *root, struct rb_node **parent,
3017 struct rb_entry *__lookup_rb_tree_ret(struct rb_root *root,
3018 struct rb_entry *cached_re, unsigned int ofs,
3019 struct rb_entry **prev_entry, struct rb_entry **next_entry,
3020 struct rb_node ***insert_p, struct rb_node **insert_parent,
3022 bool __check_rb_tree_consistence(struct f2fs_sb_info *sbi,
3023 struct rb_root *root);
3024 unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *sbi, int nr_shrink);
3025 bool f2fs_init_extent_tree(struct inode *inode, struct f2fs_extent *i_ext);
3026 void f2fs_drop_extent_tree(struct inode *inode);
3027 unsigned int f2fs_destroy_extent_node(struct inode *inode);
3028 void f2fs_destroy_extent_tree(struct inode *inode);
3029 bool f2fs_lookup_extent_cache(struct inode *inode, pgoff_t pgofs,
3030 struct extent_info *ei);
3031 void f2fs_update_extent_cache(struct dnode_of_data *dn);
3032 void f2fs_update_extent_cache_range(struct dnode_of_data *dn,
3033 pgoff_t fofs, block_t blkaddr, unsigned int len);
3034 void init_extent_cache_info(struct f2fs_sb_info *sbi);
3035 int __init create_extent_cache(void);
3036 void destroy_extent_cache(void);
3041 int __init f2fs_init_sysfs(void);
3042 void f2fs_exit_sysfs(void);
3043 int f2fs_register_sysfs(struct f2fs_sb_info *sbi);
3044 void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi);
3049 static inline bool f2fs_encrypted_inode(struct inode *inode)
3051 return file_is_encrypt(inode);
3054 static inline bool f2fs_encrypted_file(struct inode *inode)
3056 return f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode);
3059 static inline void f2fs_set_encrypted_inode(struct inode *inode)
3061 #ifdef CONFIG_F2FS_FS_ENCRYPTION
3062 file_set_encrypt(inode);
3066 static inline bool f2fs_bio_encrypted(struct bio *bio)
3068 return bio->bi_private != NULL;
3071 static inline int f2fs_sb_has_crypto(struct super_block *sb)
3073 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_ENCRYPT);
3076 static inline int f2fs_sb_mounted_blkzoned(struct super_block *sb)
3078 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_BLKZONED);
3081 static inline int f2fs_sb_has_extra_attr(struct super_block *sb)
3083 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_EXTRA_ATTR);
3086 static inline int f2fs_sb_has_project_quota(struct super_block *sb)
3088 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_PRJQUOTA);
3091 static inline int f2fs_sb_has_inode_chksum(struct super_block *sb)
3093 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_INODE_CHKSUM);
3096 static inline int f2fs_sb_has_flexible_inline_xattr(struct super_block *sb)
3098 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_FLEXIBLE_INLINE_XATTR);
3101 static inline int f2fs_sb_has_quota_ino(struct super_block *sb)
3103 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_QUOTA_INO);
3106 #ifdef CONFIG_BLK_DEV_ZONED
3107 static inline int get_blkz_type(struct f2fs_sb_info *sbi,
3108 struct block_device *bdev, block_t blkaddr)
3110 unsigned int zno = blkaddr >> sbi->log_blocks_per_blkz;
3113 for (i = 0; i < sbi->s_ndevs; i++)
3114 if (FDEV(i).bdev == bdev)
3115 return FDEV(i).blkz_type[zno];
3120 static inline bool f2fs_discard_en(struct f2fs_sb_info *sbi)
3122 struct request_queue *q = bdev_get_queue(sbi->sb->s_bdev);
3124 return blk_queue_discard(q) || f2fs_sb_mounted_blkzoned(sbi->sb);
3127 static inline void set_opt_mode(struct f2fs_sb_info *sbi, unsigned int mt)
3129 clear_opt(sbi, ADAPTIVE);
3130 clear_opt(sbi, LFS);
3133 case F2FS_MOUNT_ADAPTIVE:
3134 set_opt(sbi, ADAPTIVE);
3136 case F2FS_MOUNT_LFS:
3142 static inline bool f2fs_may_encrypt(struct inode *inode)
3144 #ifdef CONFIG_F2FS_FS_ENCRYPTION
3145 umode_t mode = inode->i_mode;
3147 return (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode));