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 #ifdef CONFIG_F2FS_FS_ENCRYPTION
26 #include <linux/fscrypt_supp.h>
28 #include <linux/fscrypt_notsupp.h>
30 #include <crypto/hash.h>
32 #ifdef CONFIG_F2FS_CHECK_FS
33 #define f2fs_bug_on(sbi, condition) BUG_ON(condition)
35 #define f2fs_bug_on(sbi, condition) \
37 if (unlikely(condition)) { \
39 set_sbi_flag(sbi, SBI_NEED_FSCK); \
44 #ifdef CONFIG_F2FS_FAULT_INJECTION
59 struct f2fs_fault_info {
61 unsigned int inject_rate;
62 unsigned int inject_type;
65 extern char *fault_name[FAULT_MAX];
66 #define IS_FAULT_SET(fi, type) ((fi)->inject_type & (1 << (type)))
72 #define F2FS_MOUNT_BG_GC 0x00000001
73 #define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
74 #define F2FS_MOUNT_DISCARD 0x00000004
75 #define F2FS_MOUNT_NOHEAP 0x00000008
76 #define F2FS_MOUNT_XATTR_USER 0x00000010
77 #define F2FS_MOUNT_POSIX_ACL 0x00000020
78 #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
79 #define F2FS_MOUNT_INLINE_XATTR 0x00000080
80 #define F2FS_MOUNT_INLINE_DATA 0x00000100
81 #define F2FS_MOUNT_INLINE_DENTRY 0x00000200
82 #define F2FS_MOUNT_FLUSH_MERGE 0x00000400
83 #define F2FS_MOUNT_NOBARRIER 0x00000800
84 #define F2FS_MOUNT_FASTBOOT 0x00001000
85 #define F2FS_MOUNT_EXTENT_CACHE 0x00002000
86 #define F2FS_MOUNT_FORCE_FG_GC 0x00004000
87 #define F2FS_MOUNT_DATA_FLUSH 0x00008000
88 #define F2FS_MOUNT_FAULT_INJECTION 0x00010000
89 #define F2FS_MOUNT_ADAPTIVE 0x00020000
90 #define F2FS_MOUNT_LFS 0x00040000
92 #define clear_opt(sbi, option) ((sbi)->mount_opt.opt &= ~F2FS_MOUNT_##option)
93 #define set_opt(sbi, option) ((sbi)->mount_opt.opt |= F2FS_MOUNT_##option)
94 #define test_opt(sbi, option) ((sbi)->mount_opt.opt & F2FS_MOUNT_##option)
96 #define ver_after(a, b) (typecheck(unsigned long long, a) && \
97 typecheck(unsigned long long, b) && \
98 ((long long)((a) - (b)) > 0))
100 typedef u32 block_t; /*
101 * should not change u32, since it is the on-disk block
102 * address format, __le32.
106 struct f2fs_mount_info {
110 #define F2FS_FEATURE_ENCRYPT 0x0001
111 #define F2FS_FEATURE_BLKZONED 0x0002
113 #define F2FS_HAS_FEATURE(sb, mask) \
114 ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
115 #define F2FS_SET_FEATURE(sb, mask) \
116 (F2FS_SB(sb)->raw_super->feature |= cpu_to_le32(mask))
117 #define F2FS_CLEAR_FEATURE(sb, mask) \
118 (F2FS_SB(sb)->raw_super->feature &= ~cpu_to_le32(mask))
121 * For checkpoint manager
128 #define CP_UMOUNT 0x00000001
129 #define CP_FASTBOOT 0x00000002
130 #define CP_SYNC 0x00000004
131 #define CP_RECOVERY 0x00000008
132 #define CP_DISCARD 0x00000010
133 #define CP_TRIMMED 0x00000020
135 #define DEF_BATCHED_TRIM_SECTIONS 2048
136 #define BATCHED_TRIM_SEGMENTS(sbi) \
137 (GET_SEG_FROM_SEC(sbi, SM_I(sbi)->trim_sections))
138 #define BATCHED_TRIM_BLOCKS(sbi) \
139 (BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg)
140 #define MAX_DISCARD_BLOCKS(sbi) BLKS_PER_SEC(sbi)
141 #define DISCARD_ISSUE_RATE 8
142 #define DEF_CP_INTERVAL 60 /* 60 secs */
143 #define DEF_IDLE_INTERVAL 5 /* 5 secs */
154 * For CP/NAT/SIT/SSA readahead
164 /* for the list of ino */
166 ORPHAN_INO, /* for orphan ino list */
167 APPEND_INO, /* for append ino list */
168 UPDATE_INO, /* for update ino list */
169 MAX_INO_ENTRY, /* max. list */
173 struct list_head list; /* list head */
174 nid_t ino; /* inode number */
177 /* for the list of inodes to be GCed */
179 struct list_head list; /* list head */
180 struct inode *inode; /* vfs inode pointer */
183 /* for the bitmap indicate blocks to be discarded */
184 struct discard_entry {
185 struct list_head list; /* list head */
186 block_t start_blkaddr; /* start blockaddr of current segment */
187 unsigned char discard_map[SIT_VBLOCK_MAP_SIZE]; /* segment discard bitmap */
190 /* max discard pend list number */
191 #define MAX_PLIST_NUM 512
192 #define plist_idx(blk_num) ((blk_num) >= MAX_PLIST_NUM ? \
193 (MAX_PLIST_NUM - 1) : (blk_num - 1))
201 struct discard_info {
202 block_t lstart; /* logical start address */
203 block_t len; /* length */
204 block_t start; /* actual start address in dev */
208 struct rb_node rb_node; /* rb node located in rb-tree */
211 block_t lstart; /* logical start address */
212 block_t len; /* length */
213 block_t start; /* actual start address in dev */
215 struct discard_info di; /* discard info */
218 struct list_head list; /* command list */
219 struct completion wait; /* compleation */
220 struct block_device *bdev; /* bdev */
221 unsigned short ref; /* reference count */
222 unsigned char state; /* state */
223 int error; /* bio error */
226 struct discard_cmd_control {
227 struct task_struct *f2fs_issue_discard; /* discard thread */
228 struct list_head entry_list; /* 4KB discard entry list */
229 struct list_head pend_list[MAX_PLIST_NUM];/* store pending entries */
230 struct list_head wait_list; /* store on-flushing entries */
231 wait_queue_head_t discard_wait_queue; /* waiting queue for wake-up */
232 struct mutex cmd_lock;
233 unsigned int nr_discards; /* # of discards in the list */
234 unsigned int max_discards; /* max. discards to be issued */
235 unsigned int undiscard_blks; /* # of undiscard blocks */
236 atomic_t issued_discard; /* # of issued discard */
237 atomic_t issing_discard; /* # of issing discard */
238 atomic_t discard_cmd_cnt; /* # of cached cmd count */
239 struct rb_root root; /* root of discard rb-tree */
242 /* for the list of fsync inodes, used only during recovery */
243 struct fsync_inode_entry {
244 struct list_head list; /* list head */
245 struct inode *inode; /* vfs inode pointer */
246 block_t blkaddr; /* block address locating the last fsync */
247 block_t last_dentry; /* block address locating the last dentry */
250 #define nats_in_cursum(jnl) (le16_to_cpu((jnl)->n_nats))
251 #define sits_in_cursum(jnl) (le16_to_cpu((jnl)->n_sits))
253 #define nat_in_journal(jnl, i) ((jnl)->nat_j.entries[i].ne)
254 #define nid_in_journal(jnl, i) ((jnl)->nat_j.entries[i].nid)
255 #define sit_in_journal(jnl, i) ((jnl)->sit_j.entries[i].se)
256 #define segno_in_journal(jnl, i) ((jnl)->sit_j.entries[i].segno)
258 #define MAX_NAT_JENTRIES(jnl) (NAT_JOURNAL_ENTRIES - nats_in_cursum(jnl))
259 #define MAX_SIT_JENTRIES(jnl) (SIT_JOURNAL_ENTRIES - sits_in_cursum(jnl))
261 static inline int update_nats_in_cursum(struct f2fs_journal *journal, int i)
263 int before = nats_in_cursum(journal);
265 journal->n_nats = cpu_to_le16(before + i);
269 static inline int update_sits_in_cursum(struct f2fs_journal *journal, int i)
271 int before = sits_in_cursum(journal);
273 journal->n_sits = cpu_to_le16(before + i);
277 static inline bool __has_cursum_space(struct f2fs_journal *journal,
280 if (type == NAT_JOURNAL)
281 return size <= MAX_NAT_JENTRIES(journal);
282 return size <= MAX_SIT_JENTRIES(journal);
288 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
289 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
290 #define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
292 #define F2FS_IOCTL_MAGIC 0xf5
293 #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
294 #define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
295 #define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
296 #define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
297 #define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
298 #define F2FS_IOC_GARBAGE_COLLECT _IOW(F2FS_IOCTL_MAGIC, 6, __u32)
299 #define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7)
300 #define F2FS_IOC_DEFRAGMENT _IOWR(F2FS_IOCTL_MAGIC, 8, \
301 struct f2fs_defragment)
302 #define F2FS_IOC_MOVE_RANGE _IOWR(F2FS_IOCTL_MAGIC, 9, \
303 struct f2fs_move_range)
304 #define F2FS_IOC_FLUSH_DEVICE _IOW(F2FS_IOCTL_MAGIC, 10, \
305 struct f2fs_flush_device)
306 #define F2FS_IOC_GARBAGE_COLLECT_RANGE _IOW(F2FS_IOCTL_MAGIC, 11, \
307 struct f2fs_gc_range)
309 #define F2FS_IOC_SET_ENCRYPTION_POLICY FS_IOC_SET_ENCRYPTION_POLICY
310 #define F2FS_IOC_GET_ENCRYPTION_POLICY FS_IOC_GET_ENCRYPTION_POLICY
311 #define F2FS_IOC_GET_ENCRYPTION_PWSALT FS_IOC_GET_ENCRYPTION_PWSALT
314 * should be same as XFS_IOC_GOINGDOWN.
315 * Flags for going down operation used by FS_IOC_GOINGDOWN
317 #define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
318 #define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
319 #define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
320 #define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
321 #define F2FS_GOING_DOWN_METAFLUSH 0x3 /* going down with meta flush */
323 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
325 * ioctl commands in 32 bit emulation
327 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
328 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
329 #define F2FS_IOC32_GETVERSION FS_IOC32_GETVERSION
332 struct f2fs_gc_range {
338 struct f2fs_defragment {
343 struct f2fs_move_range {
344 u32 dst_fd; /* destination fd */
345 u64 pos_in; /* start position in src_fd */
346 u64 pos_out; /* start position in dst_fd */
347 u64 len; /* size to move */
350 struct f2fs_flush_device {
351 u32 dev_num; /* device number to flush */
352 u32 segments; /* # of segments to flush */
356 * For INODE and NODE manager
358 /* for directory operations */
359 struct f2fs_dentry_ptr {
362 struct f2fs_dir_entry *dentry;
363 __u8 (*filename)[F2FS_SLOT_LEN];
367 static inline void make_dentry_ptr_block(struct inode *inode,
368 struct f2fs_dentry_ptr *d, struct f2fs_dentry_block *t)
371 d->max = NR_DENTRY_IN_BLOCK;
372 d->bitmap = &t->dentry_bitmap;
373 d->dentry = t->dentry;
374 d->filename = t->filename;
377 static inline void make_dentry_ptr_inline(struct inode *inode,
378 struct f2fs_dentry_ptr *d, struct f2fs_inline_dentry *t)
381 d->max = NR_INLINE_DENTRY;
382 d->bitmap = &t->dentry_bitmap;
383 d->dentry = t->dentry;
384 d->filename = t->filename;
388 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
389 * as its node offset to distinguish from index node blocks.
390 * But some bits are used to mark the node block.
392 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
395 ALLOC_NODE, /* allocate a new node page if needed */
396 LOOKUP_NODE, /* look up a node without readahead */
398 * look up a node with readahead called
403 #define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */
405 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
407 /* vector size for gang look-up from extent cache that consists of radix tree */
408 #define EXT_TREE_VEC_SIZE 64
410 /* for in-memory extent cache entry */
411 #define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
413 /* number of extent info in extent cache we try to shrink */
414 #define EXTENT_CACHE_SHRINK_NUMBER 128
417 struct rb_node rb_node; /* rb node located in rb-tree */
418 unsigned int ofs; /* start offset of the entry */
419 unsigned int len; /* length of the entry */
423 unsigned int fofs; /* start offset in a file */
424 unsigned int len; /* length of the extent */
425 u32 blk; /* start block address of the extent */
429 struct rb_node rb_node;
436 struct extent_info ei; /* extent info */
439 struct list_head list; /* node in global extent list of sbi */
440 struct extent_tree *et; /* extent tree pointer */
444 nid_t ino; /* inode number */
445 struct rb_root root; /* root of extent info rb-tree */
446 struct extent_node *cached_en; /* recently accessed extent node */
447 struct extent_info largest; /* largested extent info */
448 struct list_head list; /* to be used by sbi->zombie_list */
449 rwlock_t lock; /* protect extent info rb-tree */
450 atomic_t node_cnt; /* # of extent node in rb-tree*/
454 * This structure is taken from ext4_map_blocks.
456 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
458 #define F2FS_MAP_NEW (1 << BH_New)
459 #define F2FS_MAP_MAPPED (1 << BH_Mapped)
460 #define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten)
461 #define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
464 struct f2fs_map_blocks {
468 unsigned int m_flags;
469 pgoff_t *m_next_pgofs; /* point next possible non-hole pgofs */
472 /* for flag in get_data_block */
473 #define F2FS_GET_BLOCK_READ 0
474 #define F2FS_GET_BLOCK_DIO 1
475 #define F2FS_GET_BLOCK_FIEMAP 2
476 #define F2FS_GET_BLOCK_BMAP 3
477 #define F2FS_GET_BLOCK_PRE_DIO 4
478 #define F2FS_GET_BLOCK_PRE_AIO 5
481 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
483 #define FADVISE_COLD_BIT 0x01
484 #define FADVISE_LOST_PINO_BIT 0x02
485 #define FADVISE_ENCRYPT_BIT 0x04
486 #define FADVISE_ENC_NAME_BIT 0x08
487 #define FADVISE_KEEP_SIZE_BIT 0x10
489 #define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
490 #define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
491 #define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
492 #define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
493 #define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
494 #define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
495 #define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
496 #define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
497 #define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
498 #define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
499 #define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
500 #define file_keep_isize(inode) is_file(inode, FADVISE_KEEP_SIZE_BIT)
501 #define file_set_keep_isize(inode) set_file(inode, FADVISE_KEEP_SIZE_BIT)
503 #define DEF_DIR_LEVEL 0
505 struct f2fs_inode_info {
506 struct inode vfs_inode; /* serve a vfs inode */
507 unsigned long i_flags; /* keep an inode flags for ioctl */
508 unsigned char i_advise; /* use to give file attribute hints */
509 unsigned char i_dir_level; /* use for dentry level for large dir */
510 unsigned int i_current_depth; /* use only in directory structure */
511 unsigned int i_pino; /* parent inode number */
512 umode_t i_acl_mode; /* keep file acl mode temporarily */
514 /* Use below internally in f2fs*/
515 unsigned long flags; /* use to pass per-file flags */
516 struct rw_semaphore i_sem; /* protect fi info */
517 atomic_t dirty_pages; /* # of dirty pages */
518 f2fs_hash_t chash; /* hash value of given file name */
519 unsigned int clevel; /* maximum level of given file name */
520 struct task_struct *task; /* lookup and create consistency */
521 nid_t i_xattr_nid; /* node id that contains xattrs */
522 loff_t last_disk_size; /* lastly written file size */
524 struct list_head dirty_list; /* dirty list for dirs and files */
525 struct list_head gdirty_list; /* linked in global dirty list */
526 struct list_head inmem_pages; /* inmemory pages managed by f2fs */
527 struct mutex inmem_lock; /* lock for inmemory pages */
528 struct extent_tree *extent_tree; /* cached extent_tree entry */
529 struct rw_semaphore dio_rwsem[2];/* avoid racing between dio and gc */
530 struct rw_semaphore i_mmap_sem;
533 static inline void get_extent_info(struct extent_info *ext,
534 struct f2fs_extent *i_ext)
536 ext->fofs = le32_to_cpu(i_ext->fofs);
537 ext->blk = le32_to_cpu(i_ext->blk);
538 ext->len = le32_to_cpu(i_ext->len);
541 static inline void set_raw_extent(struct extent_info *ext,
542 struct f2fs_extent *i_ext)
544 i_ext->fofs = cpu_to_le32(ext->fofs);
545 i_ext->blk = cpu_to_le32(ext->blk);
546 i_ext->len = cpu_to_le32(ext->len);
549 static inline void set_extent_info(struct extent_info *ei, unsigned int fofs,
550 u32 blk, unsigned int len)
557 static inline bool __is_discard_mergeable(struct discard_info *back,
558 struct discard_info *front)
560 return back->lstart + back->len == front->lstart;
563 static inline bool __is_discard_back_mergeable(struct discard_info *cur,
564 struct discard_info *back)
566 return __is_discard_mergeable(back, cur);
569 static inline bool __is_discard_front_mergeable(struct discard_info *cur,
570 struct discard_info *front)
572 return __is_discard_mergeable(cur, front);
575 static inline bool __is_extent_mergeable(struct extent_info *back,
576 struct extent_info *front)
578 return (back->fofs + back->len == front->fofs &&
579 back->blk + back->len == front->blk);
582 static inline bool __is_back_mergeable(struct extent_info *cur,
583 struct extent_info *back)
585 return __is_extent_mergeable(back, cur);
588 static inline bool __is_front_mergeable(struct extent_info *cur,
589 struct extent_info *front)
591 return __is_extent_mergeable(cur, front);
594 extern void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync);
595 static inline void __try_update_largest_extent(struct inode *inode,
596 struct extent_tree *et, struct extent_node *en)
598 if (en->ei.len > et->largest.len) {
599 et->largest = en->ei;
600 f2fs_mark_inode_dirty_sync(inode, true);
610 struct f2fs_nm_info {
611 block_t nat_blkaddr; /* base disk address of NAT */
612 nid_t max_nid; /* maximum possible node ids */
613 nid_t available_nids; /* # of available node ids */
614 nid_t next_scan_nid; /* the next nid to be scanned */
615 unsigned int ram_thresh; /* control the memory footprint */
616 unsigned int ra_nid_pages; /* # of nid pages to be readaheaded */
617 unsigned int dirty_nats_ratio; /* control dirty nats ratio threshold */
619 /* NAT cache management */
620 struct radix_tree_root nat_root;/* root of the nat entry cache */
621 struct radix_tree_root nat_set_root;/* root of the nat set cache */
622 struct rw_semaphore nat_tree_lock; /* protect nat_tree_lock */
623 struct list_head nat_entries; /* cached nat entry list (clean) */
624 unsigned int nat_cnt; /* the # of cached nat entries */
625 unsigned int dirty_nat_cnt; /* total num of nat entries in set */
626 unsigned int nat_blocks; /* # of nat blocks */
628 /* free node ids management */
629 struct radix_tree_root free_nid_root;/* root of the free_nid cache */
630 struct list_head nid_list[MAX_NID_LIST];/* lists for free nids */
631 unsigned int nid_cnt[MAX_NID_LIST]; /* the number of free node id */
632 spinlock_t nid_list_lock; /* protect nid lists ops */
633 struct mutex build_lock; /* lock for build free nids */
634 unsigned char (*free_nid_bitmap)[NAT_ENTRY_BITMAP_SIZE];
635 unsigned char *nat_block_bitmap;
636 unsigned short *free_nid_count; /* free nid count of NAT block */
639 char *nat_bitmap; /* NAT bitmap pointer */
641 unsigned int nat_bits_blocks; /* # of nat bits blocks */
642 unsigned char *nat_bits; /* NAT bits blocks */
643 unsigned char *full_nat_bits; /* full NAT pages */
644 unsigned char *empty_nat_bits; /* empty NAT pages */
645 #ifdef CONFIG_F2FS_CHECK_FS
646 char *nat_bitmap_mir; /* NAT bitmap mirror */
648 int bitmap_size; /* bitmap size */
652 * this structure is used as one of function parameters.
653 * all the information are dedicated to a given direct node block determined
654 * by the data offset in a file.
656 struct dnode_of_data {
657 struct inode *inode; /* vfs inode pointer */
658 struct page *inode_page; /* its inode page, NULL is possible */
659 struct page *node_page; /* cached direct node page */
660 nid_t nid; /* node id of the direct node block */
661 unsigned int ofs_in_node; /* data offset in the node page */
662 bool inode_page_locked; /* inode page is locked or not */
663 bool node_changed; /* is node block changed */
664 char cur_level; /* level of hole node page */
665 char max_level; /* level of current page located */
666 block_t data_blkaddr; /* block address of the node block */
669 static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
670 struct page *ipage, struct page *npage, nid_t nid)
672 memset(dn, 0, sizeof(*dn));
674 dn->inode_page = ipage;
675 dn->node_page = npage;
682 * By default, there are 6 active log areas across the whole main area.
683 * When considering hot and cold data separation to reduce cleaning overhead,
684 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
686 * In the current design, you should not change the numbers intentionally.
687 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
688 * logs individually according to the underlying devices. (default: 6)
689 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
690 * data and 8 for node logs.
692 #define NR_CURSEG_DATA_TYPE (3)
693 #define NR_CURSEG_NODE_TYPE (3)
694 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
697 CURSEG_HOT_DATA = 0, /* directory entry blocks */
698 CURSEG_WARM_DATA, /* data blocks */
699 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
700 CURSEG_HOT_NODE, /* direct node blocks of directory files */
701 CURSEG_WARM_NODE, /* direct node blocks of normal files */
702 CURSEG_COLD_NODE, /* indirect node blocks */
707 struct completion wait;
708 struct llist_node llnode;
712 struct flush_cmd_control {
713 struct task_struct *f2fs_issue_flush; /* flush thread */
714 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
715 atomic_t issued_flush; /* # of issued flushes */
716 atomic_t issing_flush; /* # of issing flushes */
717 struct llist_head issue_list; /* list for command issue */
718 struct llist_node *dispatch_list; /* list for command dispatch */
721 struct f2fs_sm_info {
722 struct sit_info *sit_info; /* whole segment information */
723 struct free_segmap_info *free_info; /* free segment information */
724 struct dirty_seglist_info *dirty_info; /* dirty segment information */
725 struct curseg_info *curseg_array; /* active segment information */
727 block_t seg0_blkaddr; /* block address of 0'th segment */
728 block_t main_blkaddr; /* start block address of main area */
729 block_t ssa_blkaddr; /* start block address of SSA area */
731 unsigned int segment_count; /* total # of segments */
732 unsigned int main_segments; /* # of segments in main area */
733 unsigned int reserved_segments; /* # of reserved segments */
734 unsigned int ovp_segments; /* # of overprovision segments */
736 /* a threshold to reclaim prefree segments */
737 unsigned int rec_prefree_segments;
739 /* for batched trimming */
740 unsigned int trim_sections; /* # of sections to trim */
742 struct list_head sit_entry_set; /* sit entry set list */
744 unsigned int ipu_policy; /* in-place-update policy */
745 unsigned int min_ipu_util; /* in-place-update threshold */
746 unsigned int min_fsync_blocks; /* threshold for fsync */
747 unsigned int min_hot_blocks; /* threshold for hot block allocation */
749 /* for flush command control */
750 struct flush_cmd_control *fcc_info;
752 /* for discard command control */
753 struct discard_cmd_control *dcc_info;
760 * COUNT_TYPE for monitoring
762 * f2fs monitors the number of several block types such as on-writeback,
763 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
765 #define WB_DATA_TYPE(p) (__is_cp_guaranteed(p) ? F2FS_WB_CP_DATA : F2FS_WB_DATA)
779 * The below are the page types of bios used in submit_bio().
780 * The available types are:
781 * DATA User data pages. It operates as async mode.
782 * NODE Node pages. It operates as async mode.
783 * META FS metadata pages such as SIT, NAT, CP.
784 * NR_PAGE_TYPE The number of page types.
785 * META_FLUSH Make sure the previous pages are written
786 * with waiting the bio's completion
787 * ... Only can be used with META.
789 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
796 INMEM, /* the below types are used by tracepoints only. */
805 HOT = 0, /* must be zero for meta bio */
811 enum need_lock_type {
817 struct f2fs_io_info {
818 struct f2fs_sb_info *sbi; /* f2fs_sb_info pointer */
819 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
820 enum temp_type temp; /* contains HOT/WARM/COLD */
821 int op; /* contains REQ_OP_ */
822 int op_flags; /* req_flag_bits */
823 block_t new_blkaddr; /* new block address to be written */
824 block_t old_blkaddr; /* old block address before Cow */
825 struct page *page; /* page to be written */
826 struct page *encrypted_page; /* encrypted page */
827 struct list_head list; /* serialize IOs */
828 bool submitted; /* indicate IO submission */
829 int need_lock; /* indicate we need to lock cp_rwsem */
830 bool in_list; /* indicate fio is in io_list */
833 #define is_read_io(rw) ((rw) == READ)
834 struct f2fs_bio_info {
835 struct f2fs_sb_info *sbi; /* f2fs superblock */
836 struct bio *bio; /* bios to merge */
837 sector_t last_block_in_bio; /* last block number */
838 struct f2fs_io_info fio; /* store buffered io info. */
839 struct rw_semaphore io_rwsem; /* blocking op for bio */
840 spinlock_t io_lock; /* serialize DATA/NODE IOs */
841 struct list_head io_list; /* track fios */
844 #define FDEV(i) (sbi->devs[i])
845 #define RDEV(i) (raw_super->devs[i])
846 struct f2fs_dev_info {
847 struct block_device *bdev;
848 char path[MAX_PATH_LEN];
849 unsigned int total_segments;
852 #ifdef CONFIG_BLK_DEV_ZONED
853 unsigned int nr_blkz; /* Total number of zones */
854 u8 *blkz_type; /* Array of zones type */
859 DIR_INODE, /* for dirty dir inode */
860 FILE_INODE, /* for dirty regular/symlink inode */
861 DIRTY_META, /* for all dirtied inode metadata */
865 /* for inner inode cache management */
866 struct inode_management {
867 struct radix_tree_root ino_root; /* ino entry array */
868 spinlock_t ino_lock; /* for ino entry lock */
869 struct list_head ino_list; /* inode list head */
870 unsigned long ino_num; /* number of entries */
873 /* For s_flag in struct f2fs_sb_info */
875 SBI_IS_DIRTY, /* dirty flag for checkpoint */
876 SBI_IS_CLOSE, /* specify unmounting */
877 SBI_NEED_FSCK, /* need fsck.f2fs to fix */
878 SBI_POR_DOING, /* recovery is doing or not */
879 SBI_NEED_SB_WRITE, /* need to recover superblock */
880 SBI_NEED_CP, /* need to checkpoint */
889 struct f2fs_sb_info {
890 struct super_block *sb; /* pointer to VFS super block */
891 struct proc_dir_entry *s_proc; /* proc entry */
892 struct f2fs_super_block *raw_super; /* raw super block pointer */
893 int valid_super_block; /* valid super block no */
894 unsigned long s_flag; /* flags for sbi */
896 #ifdef CONFIG_BLK_DEV_ZONED
897 unsigned int blocks_per_blkz; /* F2FS blocks per zone */
898 unsigned int log_blocks_per_blkz; /* log2 F2FS blocks per zone */
901 /* for node-related operations */
902 struct f2fs_nm_info *nm_info; /* node manager */
903 struct inode *node_inode; /* cache node blocks */
905 /* for segment-related operations */
906 struct f2fs_sm_info *sm_info; /* segment manager */
908 /* for bio operations */
909 struct f2fs_bio_info *write_io[NR_PAGE_TYPE]; /* for write bios */
910 struct mutex wio_mutex[NR_PAGE_TYPE - 1][NR_TEMP_TYPE];
911 /* bio ordering for NODE/DATA */
912 int write_io_size_bits; /* Write IO size bits */
913 mempool_t *write_io_dummy; /* Dummy pages */
916 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
917 int cur_cp_pack; /* remain current cp pack */
918 spinlock_t cp_lock; /* for flag in ckpt */
919 struct inode *meta_inode; /* cache meta blocks */
920 struct mutex cp_mutex; /* checkpoint procedure lock */
921 struct rw_semaphore cp_rwsem; /* blocking FS operations */
922 struct rw_semaphore node_write; /* locking node writes */
923 struct rw_semaphore node_change; /* locking node change */
924 wait_queue_head_t cp_wait;
925 unsigned long last_time[MAX_TIME]; /* to store time in jiffies */
926 long interval_time[MAX_TIME]; /* to store thresholds */
928 struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */
930 /* for orphan inode, use 0'th array */
931 unsigned int max_orphans; /* max orphan inodes */
933 /* for inode management */
934 struct list_head inode_list[NR_INODE_TYPE]; /* dirty inode list */
935 spinlock_t inode_lock[NR_INODE_TYPE]; /* for dirty inode list lock */
937 /* for extent tree cache */
938 struct radix_tree_root extent_tree_root;/* cache extent cache entries */
939 struct mutex extent_tree_lock; /* locking extent radix tree */
940 struct list_head extent_list; /* lru list for shrinker */
941 spinlock_t extent_lock; /* locking extent lru list */
942 atomic_t total_ext_tree; /* extent tree count */
943 struct list_head zombie_list; /* extent zombie tree list */
944 atomic_t total_zombie_tree; /* extent zombie tree count */
945 atomic_t total_ext_node; /* extent info count */
947 /* basic filesystem units */
948 unsigned int log_sectors_per_block; /* log2 sectors per block */
949 unsigned int log_blocksize; /* log2 block size */
950 unsigned int blocksize; /* block size */
951 unsigned int root_ino_num; /* root inode number*/
952 unsigned int node_ino_num; /* node inode number*/
953 unsigned int meta_ino_num; /* meta inode number*/
954 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
955 unsigned int blocks_per_seg; /* blocks per segment */
956 unsigned int segs_per_sec; /* segments per section */
957 unsigned int secs_per_zone; /* sections per zone */
958 unsigned int total_sections; /* total section count */
959 unsigned int total_node_count; /* total node block count */
960 unsigned int total_valid_node_count; /* valid node block count */
961 loff_t max_file_blocks; /* max block index of file */
962 int active_logs; /* # of active logs */
963 int dir_level; /* directory level */
965 block_t user_block_count; /* # of user blocks */
966 block_t total_valid_block_count; /* # of valid blocks */
967 block_t discard_blks; /* discard command candidats */
968 block_t last_valid_block_count; /* for recovery */
969 block_t reserved_blocks; /* configurable reserved blocks */
971 u32 s_next_generation; /* for NFS support */
973 /* # of pages, see count_type */
974 atomic_t nr_pages[NR_COUNT_TYPE];
975 /* # of allocated blocks */
976 struct percpu_counter alloc_valid_block_count;
978 /* writeback control */
979 atomic_t wb_sync_req; /* count # of WB_SYNC threads */
981 /* valid inode count */
982 struct percpu_counter total_valid_inode_count;
984 struct f2fs_mount_info mount_opt; /* mount options */
986 /* for cleaning operations */
987 struct mutex gc_mutex; /* mutex for GC */
988 struct f2fs_gc_kthread *gc_thread; /* GC thread */
989 unsigned int cur_victim_sec; /* current victim section num */
991 /* threshold for converting bg victims for fg */
994 /* maximum # of trials to find a victim segment for SSR and GC */
995 unsigned int max_victim_search;
998 * for stat information.
999 * one is for the LFS mode, and the other is for the SSR mode.
1001 #ifdef CONFIG_F2FS_STAT_FS
1002 struct f2fs_stat_info *stat_info; /* FS status information */
1003 unsigned int segment_count[2]; /* # of allocated segments */
1004 unsigned int block_count[2]; /* # of allocated blocks */
1005 atomic_t inplace_count; /* # of inplace update */
1006 atomic64_t total_hit_ext; /* # of lookup extent cache */
1007 atomic64_t read_hit_rbtree; /* # of hit rbtree extent node */
1008 atomic64_t read_hit_largest; /* # of hit largest extent node */
1009 atomic64_t read_hit_cached; /* # of hit cached extent node */
1010 atomic_t inline_xattr; /* # of inline_xattr inodes */
1011 atomic_t inline_inode; /* # of inline_data inodes */
1012 atomic_t inline_dir; /* # of inline_dentry inodes */
1013 atomic_t aw_cnt; /* # of atomic writes */
1014 atomic_t vw_cnt; /* # of volatile writes */
1015 atomic_t max_aw_cnt; /* max # of atomic writes */
1016 atomic_t max_vw_cnt; /* max # of volatile writes */
1017 int bg_gc; /* background gc calls */
1018 unsigned int ndirty_inode[NR_INODE_TYPE]; /* # of dirty inodes */
1020 spinlock_t stat_lock; /* lock for stat operations */
1022 /* For sysfs suppport */
1023 struct kobject s_kobj;
1024 struct completion s_kobj_unregister;
1026 /* For shrinker support */
1027 struct list_head s_list;
1028 int s_ndevs; /* number of devices */
1029 struct f2fs_dev_info *devs; /* for device list */
1030 struct mutex umount_mutex;
1031 unsigned int shrinker_run_no;
1033 /* For write statistics */
1034 u64 sectors_written_start;
1037 /* Reference to checksum algorithm driver via cryptoapi */
1038 struct crypto_shash *s_chksum_driver;
1040 /* For fault injection */
1041 #ifdef CONFIG_F2FS_FAULT_INJECTION
1042 struct f2fs_fault_info fault_info;
1046 #ifdef CONFIG_F2FS_FAULT_INJECTION
1047 #define f2fs_show_injection_info(type) \
1048 printk("%sF2FS-fs : inject %s in %s of %pF\n", \
1049 KERN_INFO, fault_name[type], \
1050 __func__, __builtin_return_address(0))
1051 static inline bool time_to_inject(struct f2fs_sb_info *sbi, int type)
1053 struct f2fs_fault_info *ffi = &sbi->fault_info;
1055 if (!ffi->inject_rate)
1058 if (!IS_FAULT_SET(ffi, type))
1061 atomic_inc(&ffi->inject_ops);
1062 if (atomic_read(&ffi->inject_ops) >= ffi->inject_rate) {
1063 atomic_set(&ffi->inject_ops, 0);
1070 /* For write statistics. Suppose sector size is 512 bytes,
1071 * and the return value is in kbytes. s is of struct f2fs_sb_info.
1073 #define BD_PART_WRITTEN(s) \
1074 (((u64)part_stat_read((s)->sb->s_bdev->bd_part, sectors[1]) - \
1075 (s)->sectors_written_start) >> 1)
1077 static inline void f2fs_update_time(struct f2fs_sb_info *sbi, int type)
1079 sbi->last_time[type] = jiffies;
1082 static inline bool f2fs_time_over(struct f2fs_sb_info *sbi, int type)
1084 struct timespec ts = {sbi->interval_time[type], 0};
1085 unsigned long interval = timespec_to_jiffies(&ts);
1087 return time_after(jiffies, sbi->last_time[type] + interval);
1090 static inline bool is_idle(struct f2fs_sb_info *sbi)
1092 struct block_device *bdev = sbi->sb->s_bdev;
1093 struct request_queue *q = bdev_get_queue(bdev);
1094 struct request_list *rl = &q->root_rl;
1096 if (rl->count[BLK_RW_SYNC] || rl->count[BLK_RW_ASYNC])
1099 return f2fs_time_over(sbi, REQ_TIME);
1105 static inline u32 f2fs_crc32(struct f2fs_sb_info *sbi, const void *address,
1106 unsigned int length)
1108 SHASH_DESC_ON_STACK(shash, sbi->s_chksum_driver);
1109 u32 *ctx = (u32 *)shash_desc_ctx(shash);
1112 shash->tfm = sbi->s_chksum_driver;
1114 *ctx = F2FS_SUPER_MAGIC;
1116 err = crypto_shash_update(shash, address, length);
1122 static inline bool f2fs_crc_valid(struct f2fs_sb_info *sbi, __u32 blk_crc,
1123 void *buf, size_t buf_size)
1125 return f2fs_crc32(sbi, buf, buf_size) == blk_crc;
1128 static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
1130 return container_of(inode, struct f2fs_inode_info, vfs_inode);
1133 static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
1135 return sb->s_fs_info;
1138 static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
1140 return F2FS_SB(inode->i_sb);
1143 static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
1145 return F2FS_I_SB(mapping->host);
1148 static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
1150 return F2FS_M_SB(page->mapping);
1153 static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
1155 return (struct f2fs_super_block *)(sbi->raw_super);
1158 static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
1160 return (struct f2fs_checkpoint *)(sbi->ckpt);
1163 static inline struct f2fs_node *F2FS_NODE(struct page *page)
1165 return (struct f2fs_node *)page_address(page);
1168 static inline struct f2fs_inode *F2FS_INODE(struct page *page)
1170 return &((struct f2fs_node *)page_address(page))->i;
1173 static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
1175 return (struct f2fs_nm_info *)(sbi->nm_info);
1178 static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
1180 return (struct f2fs_sm_info *)(sbi->sm_info);
1183 static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
1185 return (struct sit_info *)(SM_I(sbi)->sit_info);
1188 static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
1190 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
1193 static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
1195 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
1198 static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
1200 return sbi->meta_inode->i_mapping;
1203 static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
1205 return sbi->node_inode->i_mapping;
1208 static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
1210 return test_bit(type, &sbi->s_flag);
1213 static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
1215 set_bit(type, &sbi->s_flag);
1218 static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
1220 clear_bit(type, &sbi->s_flag);
1223 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
1225 return le64_to_cpu(cp->checkpoint_ver);
1228 static inline __u64 cur_cp_crc(struct f2fs_checkpoint *cp)
1230 size_t crc_offset = le32_to_cpu(cp->checksum_offset);
1231 return le32_to_cpu(*((__le32 *)((unsigned char *)cp + crc_offset)));
1234 static inline bool __is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1236 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1238 return ckpt_flags & f;
1241 static inline bool is_set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1243 return __is_set_ckpt_flags(F2FS_CKPT(sbi), f);
1246 static inline void __set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1248 unsigned int ckpt_flags;
1250 ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1252 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1255 static inline void set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1257 spin_lock(&sbi->cp_lock);
1258 __set_ckpt_flags(F2FS_CKPT(sbi), f);
1259 spin_unlock(&sbi->cp_lock);
1262 static inline void __clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1264 unsigned int ckpt_flags;
1266 ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1268 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1271 static inline void clear_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1273 spin_lock(&sbi->cp_lock);
1274 __clear_ckpt_flags(F2FS_CKPT(sbi), f);
1275 spin_unlock(&sbi->cp_lock);
1278 static inline void disable_nat_bits(struct f2fs_sb_info *sbi, bool lock)
1280 set_sbi_flag(sbi, SBI_NEED_FSCK);
1283 spin_lock(&sbi->cp_lock);
1284 __clear_ckpt_flags(F2FS_CKPT(sbi), CP_NAT_BITS_FLAG);
1285 kfree(NM_I(sbi)->nat_bits);
1286 NM_I(sbi)->nat_bits = NULL;
1288 spin_unlock(&sbi->cp_lock);
1291 static inline bool enabled_nat_bits(struct f2fs_sb_info *sbi,
1292 struct cp_control *cpc)
1294 bool set = is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG);
1296 return (cpc) ? (cpc->reason & CP_UMOUNT) && set : set;
1299 static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
1301 down_read(&sbi->cp_rwsem);
1304 static inline int f2fs_trylock_op(struct f2fs_sb_info *sbi)
1306 return down_read_trylock(&sbi->cp_rwsem);
1309 static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
1311 up_read(&sbi->cp_rwsem);
1314 static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
1316 down_write(&sbi->cp_rwsem);
1319 static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
1321 up_write(&sbi->cp_rwsem);
1324 static inline int __get_cp_reason(struct f2fs_sb_info *sbi)
1326 int reason = CP_SYNC;
1328 if (test_opt(sbi, FASTBOOT))
1329 reason = CP_FASTBOOT;
1330 if (is_sbi_flag_set(sbi, SBI_IS_CLOSE))
1335 static inline bool __remain_node_summaries(int reason)
1337 return (reason & (CP_UMOUNT | CP_FASTBOOT));
1340 static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
1342 return (is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG) ||
1343 is_set_ckpt_flags(sbi, CP_FASTBOOT_FLAG));
1347 * Check whether the given nid is within node id range.
1349 static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
1351 if (unlikely(nid < F2FS_ROOT_INO(sbi)))
1353 if (unlikely(nid >= NM_I(sbi)->max_nid))
1359 * Check whether the inode has blocks or not
1361 static inline int F2FS_HAS_BLOCKS(struct inode *inode)
1363 block_t xattr_block = F2FS_I(inode)->i_xattr_nid ? 1 : 0;
1365 return (inode->i_blocks >> F2FS_LOG_SECTORS_PER_BLOCK) > xattr_block;
1368 static inline bool f2fs_has_xattr_block(unsigned int ofs)
1370 return ofs == XATTR_NODE_OFFSET;
1373 static inline void f2fs_i_blocks_write(struct inode *, block_t, bool);
1374 static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
1375 struct inode *inode, blkcnt_t *count)
1378 block_t avail_user_block_count;
1380 #ifdef CONFIG_F2FS_FAULT_INJECTION
1381 if (time_to_inject(sbi, FAULT_BLOCK)) {
1382 f2fs_show_injection_info(FAULT_BLOCK);
1387 * let's increase this in prior to actual block count change in order
1388 * for f2fs_sync_file to avoid data races when deciding checkpoint.
1390 percpu_counter_add(&sbi->alloc_valid_block_count, (*count));
1392 spin_lock(&sbi->stat_lock);
1393 sbi->total_valid_block_count += (block_t)(*count);
1394 avail_user_block_count = sbi->user_block_count - sbi->reserved_blocks;
1395 if (unlikely(sbi->total_valid_block_count > avail_user_block_count)) {
1396 diff = sbi->total_valid_block_count - avail_user_block_count;
1398 sbi->total_valid_block_count = avail_user_block_count;
1400 spin_unlock(&sbi->stat_lock);
1401 percpu_counter_sub(&sbi->alloc_valid_block_count, diff);
1405 spin_unlock(&sbi->stat_lock);
1407 f2fs_i_blocks_write(inode, *count, true);
1411 static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
1412 struct inode *inode,
1415 blkcnt_t sectors = count << F2FS_LOG_SECTORS_PER_BLOCK;
1417 spin_lock(&sbi->stat_lock);
1418 f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
1419 f2fs_bug_on(sbi, inode->i_blocks < sectors);
1420 sbi->total_valid_block_count -= (block_t)count;
1421 spin_unlock(&sbi->stat_lock);
1422 f2fs_i_blocks_write(inode, count, false);
1425 static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
1427 atomic_inc(&sbi->nr_pages[count_type]);
1429 if (count_type == F2FS_DIRTY_DATA || count_type == F2FS_INMEM_PAGES ||
1430 count_type == F2FS_WB_CP_DATA || count_type == F2FS_WB_DATA)
1433 set_sbi_flag(sbi, SBI_IS_DIRTY);
1436 static inline void inode_inc_dirty_pages(struct inode *inode)
1438 atomic_inc(&F2FS_I(inode)->dirty_pages);
1439 inc_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
1440 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
1443 static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
1445 atomic_dec(&sbi->nr_pages[count_type]);
1448 static inline void inode_dec_dirty_pages(struct inode *inode)
1450 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
1451 !S_ISLNK(inode->i_mode))
1454 atomic_dec(&F2FS_I(inode)->dirty_pages);
1455 dec_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
1456 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
1459 static inline s64 get_pages(struct f2fs_sb_info *sbi, int count_type)
1461 return atomic_read(&sbi->nr_pages[count_type]);
1464 static inline int get_dirty_pages(struct inode *inode)
1466 return atomic_read(&F2FS_I(inode)->dirty_pages);
1469 static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
1471 unsigned int pages_per_sec = sbi->segs_per_sec * sbi->blocks_per_seg;
1472 unsigned int segs = (get_pages(sbi, block_type) + pages_per_sec - 1) >>
1473 sbi->log_blocks_per_seg;
1475 return segs / sbi->segs_per_sec;
1478 static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
1480 return sbi->total_valid_block_count;
1483 static inline block_t discard_blocks(struct f2fs_sb_info *sbi)
1485 return sbi->discard_blks;
1488 static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
1490 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1492 /* return NAT or SIT bitmap */
1493 if (flag == NAT_BITMAP)
1494 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
1495 else if (flag == SIT_BITMAP)
1496 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
1501 static inline block_t __cp_payload(struct f2fs_sb_info *sbi)
1503 return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
1506 static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
1508 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1511 if (__cp_payload(sbi) > 0) {
1512 if (flag == NAT_BITMAP)
1513 return &ckpt->sit_nat_version_bitmap;
1515 return (unsigned char *)ckpt + F2FS_BLKSIZE;
1517 offset = (flag == NAT_BITMAP) ?
1518 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
1519 return &ckpt->sit_nat_version_bitmap + offset;
1523 static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
1525 block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
1527 if (sbi->cur_cp_pack == 2)
1528 start_addr += sbi->blocks_per_seg;
1532 static inline block_t __start_cp_next_addr(struct f2fs_sb_info *sbi)
1534 block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
1536 if (sbi->cur_cp_pack == 1)
1537 start_addr += sbi->blocks_per_seg;
1541 static inline void __set_cp_next_pack(struct f2fs_sb_info *sbi)
1543 sbi->cur_cp_pack = (sbi->cur_cp_pack == 1) ? 2 : 1;
1546 static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
1548 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
1551 static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
1552 struct inode *inode, bool is_inode)
1554 block_t valid_block_count;
1555 unsigned int valid_node_count;
1557 spin_lock(&sbi->stat_lock);
1559 valid_block_count = sbi->total_valid_block_count + 1;
1560 if (unlikely(valid_block_count + sbi->reserved_blocks >
1561 sbi->user_block_count)) {
1562 spin_unlock(&sbi->stat_lock);
1566 valid_node_count = sbi->total_valid_node_count + 1;
1567 if (unlikely(valid_node_count > sbi->total_node_count)) {
1568 spin_unlock(&sbi->stat_lock);
1574 f2fs_mark_inode_dirty_sync(inode, true);
1576 f2fs_i_blocks_write(inode, 1, true);
1579 sbi->total_valid_node_count++;
1580 sbi->total_valid_block_count++;
1581 spin_unlock(&sbi->stat_lock);
1583 percpu_counter_inc(&sbi->alloc_valid_block_count);
1587 static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
1588 struct inode *inode, bool is_inode)
1590 spin_lock(&sbi->stat_lock);
1592 f2fs_bug_on(sbi, !sbi->total_valid_block_count);
1593 f2fs_bug_on(sbi, !sbi->total_valid_node_count);
1594 f2fs_bug_on(sbi, !is_inode && !inode->i_blocks);
1597 f2fs_i_blocks_write(inode, 1, false);
1598 sbi->total_valid_node_count--;
1599 sbi->total_valid_block_count--;
1601 spin_unlock(&sbi->stat_lock);
1604 static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
1606 return sbi->total_valid_node_count;
1609 static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
1611 percpu_counter_inc(&sbi->total_valid_inode_count);
1614 static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
1616 percpu_counter_dec(&sbi->total_valid_inode_count);
1619 static inline s64 valid_inode_count(struct f2fs_sb_info *sbi)
1621 return percpu_counter_sum_positive(&sbi->total_valid_inode_count);
1624 static inline struct page *f2fs_grab_cache_page(struct address_space *mapping,
1625 pgoff_t index, bool for_write)
1627 #ifdef CONFIG_F2FS_FAULT_INJECTION
1628 struct page *page = find_lock_page(mapping, index);
1633 if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_ALLOC)) {
1634 f2fs_show_injection_info(FAULT_PAGE_ALLOC);
1639 return grab_cache_page(mapping, index);
1640 return grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS);
1643 static inline void f2fs_copy_page(struct page *src, struct page *dst)
1645 char *src_kaddr = kmap(src);
1646 char *dst_kaddr = kmap(dst);
1648 memcpy(dst_kaddr, src_kaddr, PAGE_SIZE);
1653 static inline void f2fs_put_page(struct page *page, int unlock)
1659 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
1665 static inline void f2fs_put_dnode(struct dnode_of_data *dn)
1668 f2fs_put_page(dn->node_page, 1);
1669 if (dn->inode_page && dn->node_page != dn->inode_page)
1670 f2fs_put_page(dn->inode_page, 0);
1671 dn->node_page = NULL;
1672 dn->inode_page = NULL;
1675 static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
1678 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
1681 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
1686 entry = kmem_cache_alloc(cachep, flags);
1688 entry = kmem_cache_alloc(cachep, flags | __GFP_NOFAIL);
1692 static inline struct bio *f2fs_bio_alloc(int npages)
1696 /* No failure on bio allocation */
1697 bio = bio_alloc(GFP_NOIO, npages);
1699 bio = bio_alloc(GFP_NOIO | __GFP_NOFAIL, npages);
1703 static inline void f2fs_radix_tree_insert(struct radix_tree_root *root,
1704 unsigned long index, void *item)
1706 while (radix_tree_insert(root, index, item))
1710 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1712 static inline bool IS_INODE(struct page *page)
1714 struct f2fs_node *p = F2FS_NODE(page);
1716 return RAW_IS_INODE(p);
1719 static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
1721 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
1724 static inline block_t datablock_addr(struct page *node_page,
1725 unsigned int offset)
1727 struct f2fs_node *raw_node;
1730 raw_node = F2FS_NODE(node_page);
1731 addr_array = blkaddr_in_node(raw_node);
1732 return le32_to_cpu(addr_array[offset]);
1735 static inline int f2fs_test_bit(unsigned int nr, char *addr)
1740 mask = 1 << (7 - (nr & 0x07));
1741 return mask & *addr;
1744 static inline void f2fs_set_bit(unsigned int nr, char *addr)
1749 mask = 1 << (7 - (nr & 0x07));
1753 static inline void f2fs_clear_bit(unsigned int nr, char *addr)
1758 mask = 1 << (7 - (nr & 0x07));
1762 static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
1768 mask = 1 << (7 - (nr & 0x07));
1774 static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
1780 mask = 1 << (7 - (nr & 0x07));
1786 static inline void f2fs_change_bit(unsigned int nr, char *addr)
1791 mask = 1 << (7 - (nr & 0x07));
1795 /* used for f2fs_inode_info->flags */
1797 FI_NEW_INODE, /* indicate newly allocated inode */
1798 FI_DIRTY_INODE, /* indicate inode is dirty or not */
1799 FI_AUTO_RECOVER, /* indicate inode is recoverable */
1800 FI_DIRTY_DIR, /* indicate directory has dirty pages */
1801 FI_INC_LINK, /* need to increment i_nlink */
1802 FI_ACL_MODE, /* indicate acl mode */
1803 FI_NO_ALLOC, /* should not allocate any blocks */
1804 FI_FREE_NID, /* free allocated nide */
1805 FI_NO_EXTENT, /* not to use the extent cache */
1806 FI_INLINE_XATTR, /* used for inline xattr */
1807 FI_INLINE_DATA, /* used for inline data*/
1808 FI_INLINE_DENTRY, /* used for inline dentry */
1809 FI_APPEND_WRITE, /* inode has appended data */
1810 FI_UPDATE_WRITE, /* inode has in-place-update data */
1811 FI_NEED_IPU, /* used for ipu per file */
1812 FI_ATOMIC_FILE, /* indicate atomic file */
1813 FI_ATOMIC_COMMIT, /* indicate the state of atomical committing */
1814 FI_VOLATILE_FILE, /* indicate volatile file */
1815 FI_FIRST_BLOCK_WRITTEN, /* indicate #0 data block was written */
1816 FI_DROP_CACHE, /* drop dirty page cache */
1817 FI_DATA_EXIST, /* indicate data exists */
1818 FI_INLINE_DOTS, /* indicate inline dot dentries */
1819 FI_DO_DEFRAG, /* indicate defragment is running */
1820 FI_DIRTY_FILE, /* indicate regular/symlink has dirty pages */
1821 FI_NO_PREALLOC, /* indicate skipped preallocated blocks */
1822 FI_HOT_DATA, /* indicate file is hot */
1825 static inline void __mark_inode_dirty_flag(struct inode *inode,
1829 case FI_INLINE_XATTR:
1830 case FI_INLINE_DATA:
1831 case FI_INLINE_DENTRY:
1835 case FI_INLINE_DOTS:
1836 f2fs_mark_inode_dirty_sync(inode, true);
1840 static inline void set_inode_flag(struct inode *inode, int flag)
1842 if (!test_bit(flag, &F2FS_I(inode)->flags))
1843 set_bit(flag, &F2FS_I(inode)->flags);
1844 __mark_inode_dirty_flag(inode, flag, true);
1847 static inline int is_inode_flag_set(struct inode *inode, int flag)
1849 return test_bit(flag, &F2FS_I(inode)->flags);
1852 static inline void clear_inode_flag(struct inode *inode, int flag)
1854 if (test_bit(flag, &F2FS_I(inode)->flags))
1855 clear_bit(flag, &F2FS_I(inode)->flags);
1856 __mark_inode_dirty_flag(inode, flag, false);
1859 static inline void set_acl_inode(struct inode *inode, umode_t mode)
1861 F2FS_I(inode)->i_acl_mode = mode;
1862 set_inode_flag(inode, FI_ACL_MODE);
1863 f2fs_mark_inode_dirty_sync(inode, false);
1866 static inline void f2fs_i_links_write(struct inode *inode, bool inc)
1872 f2fs_mark_inode_dirty_sync(inode, true);
1875 static inline void f2fs_i_blocks_write(struct inode *inode,
1876 block_t diff, bool add)
1878 bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
1879 bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);
1880 blkcnt_t sectors = diff << F2FS_LOG_SECTORS_PER_BLOCK;
1882 inode->i_blocks = add ? inode->i_blocks + sectors :
1883 inode->i_blocks - sectors;
1884 f2fs_mark_inode_dirty_sync(inode, true);
1885 if (clean || recover)
1886 set_inode_flag(inode, FI_AUTO_RECOVER);
1889 static inline void f2fs_i_size_write(struct inode *inode, loff_t i_size)
1891 bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
1892 bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);
1894 if (i_size_read(inode) == i_size)
1897 i_size_write(inode, i_size);
1898 f2fs_mark_inode_dirty_sync(inode, true);
1899 if (clean || recover)
1900 set_inode_flag(inode, FI_AUTO_RECOVER);
1903 static inline void f2fs_i_depth_write(struct inode *inode, unsigned int depth)
1905 F2FS_I(inode)->i_current_depth = depth;
1906 f2fs_mark_inode_dirty_sync(inode, true);
1909 static inline void f2fs_i_xnid_write(struct inode *inode, nid_t xnid)
1911 F2FS_I(inode)->i_xattr_nid = xnid;
1912 f2fs_mark_inode_dirty_sync(inode, true);
1915 static inline void f2fs_i_pino_write(struct inode *inode, nid_t pino)
1917 F2FS_I(inode)->i_pino = pino;
1918 f2fs_mark_inode_dirty_sync(inode, true);
1921 static inline void get_inline_info(struct inode *inode, struct f2fs_inode *ri)
1923 struct f2fs_inode_info *fi = F2FS_I(inode);
1925 if (ri->i_inline & F2FS_INLINE_XATTR)
1926 set_bit(FI_INLINE_XATTR, &fi->flags);
1927 if (ri->i_inline & F2FS_INLINE_DATA)
1928 set_bit(FI_INLINE_DATA, &fi->flags);
1929 if (ri->i_inline & F2FS_INLINE_DENTRY)
1930 set_bit(FI_INLINE_DENTRY, &fi->flags);
1931 if (ri->i_inline & F2FS_DATA_EXIST)
1932 set_bit(FI_DATA_EXIST, &fi->flags);
1933 if (ri->i_inline & F2FS_INLINE_DOTS)
1934 set_bit(FI_INLINE_DOTS, &fi->flags);
1937 static inline void set_raw_inline(struct inode *inode, struct f2fs_inode *ri)
1941 if (is_inode_flag_set(inode, FI_INLINE_XATTR))
1942 ri->i_inline |= F2FS_INLINE_XATTR;
1943 if (is_inode_flag_set(inode, FI_INLINE_DATA))
1944 ri->i_inline |= F2FS_INLINE_DATA;
1945 if (is_inode_flag_set(inode, FI_INLINE_DENTRY))
1946 ri->i_inline |= F2FS_INLINE_DENTRY;
1947 if (is_inode_flag_set(inode, FI_DATA_EXIST))
1948 ri->i_inline |= F2FS_DATA_EXIST;
1949 if (is_inode_flag_set(inode, FI_INLINE_DOTS))
1950 ri->i_inline |= F2FS_INLINE_DOTS;
1953 static inline int f2fs_has_inline_xattr(struct inode *inode)
1955 return is_inode_flag_set(inode, FI_INLINE_XATTR);
1958 static inline unsigned int addrs_per_inode(struct inode *inode)
1960 if (f2fs_has_inline_xattr(inode))
1961 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
1962 return DEF_ADDRS_PER_INODE;
1965 static inline void *inline_xattr_addr(struct page *page)
1967 struct f2fs_inode *ri = F2FS_INODE(page);
1969 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
1970 F2FS_INLINE_XATTR_ADDRS]);
1973 static inline int inline_xattr_size(struct inode *inode)
1975 if (f2fs_has_inline_xattr(inode))
1976 return F2FS_INLINE_XATTR_ADDRS << 2;
1981 static inline int f2fs_has_inline_data(struct inode *inode)
1983 return is_inode_flag_set(inode, FI_INLINE_DATA);
1986 static inline int f2fs_exist_data(struct inode *inode)
1988 return is_inode_flag_set(inode, FI_DATA_EXIST);
1991 static inline int f2fs_has_inline_dots(struct inode *inode)
1993 return is_inode_flag_set(inode, FI_INLINE_DOTS);
1996 static inline bool f2fs_is_atomic_file(struct inode *inode)
1998 return is_inode_flag_set(inode, FI_ATOMIC_FILE);
2001 static inline bool f2fs_is_commit_atomic_write(struct inode *inode)
2003 return is_inode_flag_set(inode, FI_ATOMIC_COMMIT);
2006 static inline bool f2fs_is_volatile_file(struct inode *inode)
2008 return is_inode_flag_set(inode, FI_VOLATILE_FILE);
2011 static inline bool f2fs_is_first_block_written(struct inode *inode)
2013 return is_inode_flag_set(inode, FI_FIRST_BLOCK_WRITTEN);
2016 static inline bool f2fs_is_drop_cache(struct inode *inode)
2018 return is_inode_flag_set(inode, FI_DROP_CACHE);
2021 static inline void *inline_data_addr(struct page *page)
2023 struct f2fs_inode *ri = F2FS_INODE(page);
2025 return (void *)&(ri->i_addr[1]);
2028 static inline int f2fs_has_inline_dentry(struct inode *inode)
2030 return is_inode_flag_set(inode, FI_INLINE_DENTRY);
2033 static inline void f2fs_dentry_kunmap(struct inode *dir, struct page *page)
2035 if (!f2fs_has_inline_dentry(dir))
2039 static inline int is_file(struct inode *inode, int type)
2041 return F2FS_I(inode)->i_advise & type;
2044 static inline void set_file(struct inode *inode, int type)
2046 F2FS_I(inode)->i_advise |= type;
2047 f2fs_mark_inode_dirty_sync(inode, true);
2050 static inline void clear_file(struct inode *inode, int type)
2052 F2FS_I(inode)->i_advise &= ~type;
2053 f2fs_mark_inode_dirty_sync(inode, true);
2056 static inline bool f2fs_skip_inode_update(struct inode *inode, int dsync)
2059 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2062 spin_lock(&sbi->inode_lock[DIRTY_META]);
2063 ret = list_empty(&F2FS_I(inode)->gdirty_list);
2064 spin_unlock(&sbi->inode_lock[DIRTY_META]);
2067 if (!is_inode_flag_set(inode, FI_AUTO_RECOVER) ||
2068 file_keep_isize(inode) ||
2069 i_size_read(inode) & PAGE_MASK)
2071 return F2FS_I(inode)->last_disk_size == i_size_read(inode);
2074 static inline int f2fs_readonly(struct super_block *sb)
2076 return sb->s_flags & MS_RDONLY;
2079 static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
2081 return is_set_ckpt_flags(sbi, CP_ERROR_FLAG);
2084 static inline bool is_dot_dotdot(const struct qstr *str)
2086 if (str->len == 1 && str->name[0] == '.')
2089 if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.')
2095 static inline bool f2fs_may_extent_tree(struct inode *inode)
2097 if (!test_opt(F2FS_I_SB(inode), EXTENT_CACHE) ||
2098 is_inode_flag_set(inode, FI_NO_EXTENT))
2101 return S_ISREG(inode->i_mode);
2104 static inline void *f2fs_kmalloc(struct f2fs_sb_info *sbi,
2105 size_t size, gfp_t flags)
2107 #ifdef CONFIG_F2FS_FAULT_INJECTION
2108 if (time_to_inject(sbi, FAULT_KMALLOC)) {
2109 f2fs_show_injection_info(FAULT_KMALLOC);
2113 return kmalloc(size, flags);
2116 static inline void *f2fs_kvmalloc(size_t size, gfp_t flags)
2120 ret = kmalloc(size, flags | __GFP_NOWARN);
2122 ret = __vmalloc(size, flags, PAGE_KERNEL);
2126 static inline void *f2fs_kvzalloc(size_t size, gfp_t flags)
2130 ret = kzalloc(size, flags | __GFP_NOWARN);
2132 ret = __vmalloc(size, flags | __GFP_ZERO, PAGE_KERNEL);
2136 #define get_inode_mode(i) \
2137 ((is_inode_flag_set(i, FI_ACL_MODE)) ? \
2138 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
2143 int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync);
2144 void truncate_data_blocks(struct dnode_of_data *dn);
2145 int truncate_blocks(struct inode *inode, u64 from, bool lock);
2146 int f2fs_truncate(struct inode *inode);
2147 int f2fs_getattr(const struct path *path, struct kstat *stat,
2148 u32 request_mask, unsigned int flags);
2149 int f2fs_setattr(struct dentry *dentry, struct iattr *attr);
2150 int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end);
2151 int truncate_data_blocks_range(struct dnode_of_data *dn, int count);
2152 long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
2153 long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
2158 void f2fs_set_inode_flags(struct inode *inode);
2159 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino);
2160 struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino);
2161 int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink);
2162 int update_inode(struct inode *inode, struct page *node_page);
2163 int update_inode_page(struct inode *inode);
2164 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc);
2165 void f2fs_evict_inode(struct inode *inode);
2166 void handle_failed_inode(struct inode *inode);
2171 struct dentry *f2fs_get_parent(struct dentry *child);
2176 void set_de_type(struct f2fs_dir_entry *de, umode_t mode);
2177 unsigned char get_de_type(struct f2fs_dir_entry *de);
2178 struct f2fs_dir_entry *find_target_dentry(struct fscrypt_name *fname,
2179 f2fs_hash_t namehash, int *max_slots,
2180 struct f2fs_dentry_ptr *d);
2181 int f2fs_fill_dentries(struct dir_context *ctx, struct f2fs_dentry_ptr *d,
2182 unsigned int start_pos, struct fscrypt_str *fstr);
2183 void do_make_empty_dir(struct inode *inode, struct inode *parent,
2184 struct f2fs_dentry_ptr *d);
2185 struct page *init_inode_metadata(struct inode *inode, struct inode *dir,
2186 const struct qstr *new_name,
2187 const struct qstr *orig_name, struct page *dpage);
2188 void update_parent_metadata(struct inode *dir, struct inode *inode,
2189 unsigned int current_depth);
2190 int room_for_filename(const void *bitmap, int slots, int max_slots);
2191 void f2fs_drop_nlink(struct inode *dir, struct inode *inode);
2192 struct f2fs_dir_entry *__f2fs_find_entry(struct inode *dir,
2193 struct fscrypt_name *fname, struct page **res_page);
2194 struct f2fs_dir_entry *f2fs_find_entry(struct inode *dir,
2195 const struct qstr *child, struct page **res_page);
2196 struct f2fs_dir_entry *f2fs_parent_dir(struct inode *dir, struct page **p);
2197 ino_t f2fs_inode_by_name(struct inode *dir, const struct qstr *qstr,
2198 struct page **page);
2199 void f2fs_set_link(struct inode *dir, struct f2fs_dir_entry *de,
2200 struct page *page, struct inode *inode);
2201 void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *d,
2202 const struct qstr *name, f2fs_hash_t name_hash,
2203 unsigned int bit_pos);
2204 int f2fs_add_regular_entry(struct inode *dir, const struct qstr *new_name,
2205 const struct qstr *orig_name,
2206 struct inode *inode, nid_t ino, umode_t mode);
2207 int __f2fs_do_add_link(struct inode *dir, struct fscrypt_name *fname,
2208 struct inode *inode, nid_t ino, umode_t mode);
2209 int __f2fs_add_link(struct inode *dir, const struct qstr *name,
2210 struct inode *inode, nid_t ino, umode_t mode);
2211 void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page,
2212 struct inode *dir, struct inode *inode);
2213 int f2fs_do_tmpfile(struct inode *inode, struct inode *dir);
2214 bool f2fs_empty_dir(struct inode *dir);
2216 static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
2218 return __f2fs_add_link(d_inode(dentry->d_parent), &dentry->d_name,
2219 inode, inode->i_ino, inode->i_mode);
2225 int f2fs_inode_dirtied(struct inode *inode, bool sync);
2226 void f2fs_inode_synced(struct inode *inode);
2227 int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover);
2228 int f2fs_sync_fs(struct super_block *sb, int sync);
2229 extern __printf(3, 4)
2230 void f2fs_msg(struct super_block *sb, const char *level, const char *fmt, ...);
2231 int sanity_check_ckpt(struct f2fs_sb_info *sbi);
2236 f2fs_hash_t f2fs_dentry_hash(const struct qstr *name_info,
2237 struct fscrypt_name *fname);
2242 struct dnode_of_data;
2245 bool available_free_memory(struct f2fs_sb_info *sbi, int type);
2246 int need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid);
2247 bool is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid);
2248 bool need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino);
2249 void get_node_info(struct f2fs_sb_info *sbi, nid_t nid, struct node_info *ni);
2250 pgoff_t get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs);
2251 int get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode);
2252 int truncate_inode_blocks(struct inode *inode, pgoff_t from);
2253 int truncate_xattr_node(struct inode *inode, struct page *page);
2254 int wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino);
2255 int remove_inode_page(struct inode *inode);
2256 struct page *new_inode_page(struct inode *inode);
2257 struct page *new_node_page(struct dnode_of_data *dn,
2258 unsigned int ofs, struct page *ipage);
2259 void ra_node_page(struct f2fs_sb_info *sbi, nid_t nid);
2260 struct page *get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid);
2261 struct page *get_node_page_ra(struct page *parent, int start);
2262 void move_node_page(struct page *node_page, int gc_type);
2263 int fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode,
2264 struct writeback_control *wbc, bool atomic);
2265 int sync_node_pages(struct f2fs_sb_info *sbi, struct writeback_control *wbc);
2266 void build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount);
2267 bool alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid);
2268 void alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid);
2269 void alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid);
2270 int try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink);
2271 void recover_inline_xattr(struct inode *inode, struct page *page);
2272 int recover_xattr_data(struct inode *inode, struct page *page,
2274 int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page);
2275 int restore_node_summary(struct f2fs_sb_info *sbi,
2276 unsigned int segno, struct f2fs_summary_block *sum);
2277 void flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc);
2278 int build_node_manager(struct f2fs_sb_info *sbi);
2279 void destroy_node_manager(struct f2fs_sb_info *sbi);
2280 int __init create_node_manager_caches(void);
2281 void destroy_node_manager_caches(void);
2286 void register_inmem_page(struct inode *inode, struct page *page);
2287 void drop_inmem_pages(struct inode *inode);
2288 void drop_inmem_page(struct inode *inode, struct page *page);
2289 int commit_inmem_pages(struct inode *inode);
2290 void f2fs_balance_fs(struct f2fs_sb_info *sbi, bool need);
2291 void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi);
2292 int f2fs_issue_flush(struct f2fs_sb_info *sbi);
2293 int create_flush_cmd_control(struct f2fs_sb_info *sbi);
2294 void destroy_flush_cmd_control(struct f2fs_sb_info *sbi, bool free);
2295 void invalidate_blocks(struct f2fs_sb_info *sbi, block_t addr);
2296 bool is_checkpointed_data(struct f2fs_sb_info *sbi, block_t blkaddr);
2297 void refresh_sit_entry(struct f2fs_sb_info *sbi, block_t old, block_t new);
2298 void stop_discard_thread(struct f2fs_sb_info *sbi);
2299 void f2fs_wait_discard_bios(struct f2fs_sb_info *sbi);
2300 void clear_prefree_segments(struct f2fs_sb_info *sbi, struct cp_control *cpc);
2301 void release_discard_addrs(struct f2fs_sb_info *sbi);
2302 int npages_for_summary_flush(struct f2fs_sb_info *sbi, bool for_ra);
2303 void allocate_new_segments(struct f2fs_sb_info *sbi);
2304 int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range);
2305 bool exist_trim_candidates(struct f2fs_sb_info *sbi, struct cp_control *cpc);
2306 struct page *get_sum_page(struct f2fs_sb_info *sbi, unsigned int segno);
2307 void update_meta_page(struct f2fs_sb_info *sbi, void *src, block_t blk_addr);
2308 void write_meta_page(struct f2fs_sb_info *sbi, struct page *page);
2309 void write_node_page(unsigned int nid, struct f2fs_io_info *fio);
2310 void write_data_page(struct dnode_of_data *dn, struct f2fs_io_info *fio);
2311 int rewrite_data_page(struct f2fs_io_info *fio);
2312 void __f2fs_replace_block(struct f2fs_sb_info *sbi, struct f2fs_summary *sum,
2313 block_t old_blkaddr, block_t new_blkaddr,
2314 bool recover_curseg, bool recover_newaddr);
2315 void f2fs_replace_block(struct f2fs_sb_info *sbi, struct dnode_of_data *dn,
2316 block_t old_addr, block_t new_addr,
2317 unsigned char version, bool recover_curseg,
2318 bool recover_newaddr);
2319 void allocate_data_block(struct f2fs_sb_info *sbi, struct page *page,
2320 block_t old_blkaddr, block_t *new_blkaddr,
2321 struct f2fs_summary *sum, int type,
2322 struct f2fs_io_info *fio, bool add_list);
2323 void f2fs_wait_on_page_writeback(struct page *page,
2324 enum page_type type, bool ordered);
2325 void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info *sbi,
2327 void write_data_summaries(struct f2fs_sb_info *sbi, block_t start_blk);
2328 void write_node_summaries(struct f2fs_sb_info *sbi, block_t start_blk);
2329 int lookup_journal_in_cursum(struct f2fs_journal *journal, int type,
2330 unsigned int val, int alloc);
2331 void flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc);
2332 int build_segment_manager(struct f2fs_sb_info *sbi);
2333 void destroy_segment_manager(struct f2fs_sb_info *sbi);
2334 int __init create_segment_manager_caches(void);
2335 void destroy_segment_manager_caches(void);
2340 void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io);
2341 struct page *grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index);
2342 struct page *get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index);
2343 struct page *get_tmp_page(struct f2fs_sb_info *sbi, pgoff_t index);
2344 bool is_valid_blkaddr(struct f2fs_sb_info *sbi, block_t blkaddr, int type);
2345 int ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages,
2346 int type, bool sync);
2347 void ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index);
2348 long sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type,
2350 void add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type);
2351 void remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type);
2352 void release_ino_entry(struct f2fs_sb_info *sbi, bool all);
2353 bool exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode);
2354 int f2fs_sync_inode_meta(struct f2fs_sb_info *sbi);
2355 int acquire_orphan_inode(struct f2fs_sb_info *sbi);
2356 void release_orphan_inode(struct f2fs_sb_info *sbi);
2357 void add_orphan_inode(struct inode *inode);
2358 void remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino);
2359 int recover_orphan_inodes(struct f2fs_sb_info *sbi);
2360 int get_valid_checkpoint(struct f2fs_sb_info *sbi);
2361 void update_dirty_page(struct inode *inode, struct page *page);
2362 void remove_dirty_inode(struct inode *inode);
2363 int sync_dirty_inodes(struct f2fs_sb_info *sbi, enum inode_type type);
2364 int write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc);
2365 void init_ino_entry_info(struct f2fs_sb_info *sbi);
2366 int __init create_checkpoint_caches(void);
2367 void destroy_checkpoint_caches(void);
2372 void f2fs_submit_merged_write(struct f2fs_sb_info *sbi, enum page_type type);
2373 void f2fs_submit_merged_write_cond(struct f2fs_sb_info *sbi,
2374 struct inode *inode, nid_t ino, pgoff_t idx,
2375 enum page_type type);
2376 void f2fs_flush_merged_writes(struct f2fs_sb_info *sbi);
2377 int f2fs_submit_page_bio(struct f2fs_io_info *fio);
2378 int f2fs_submit_page_write(struct f2fs_io_info *fio);
2379 struct block_device *f2fs_target_device(struct f2fs_sb_info *sbi,
2380 block_t blk_addr, struct bio *bio);
2381 int f2fs_target_device_index(struct f2fs_sb_info *sbi, block_t blkaddr);
2382 void set_data_blkaddr(struct dnode_of_data *dn);
2383 void f2fs_update_data_blkaddr(struct dnode_of_data *dn, block_t blkaddr);
2384 int reserve_new_blocks(struct dnode_of_data *dn, blkcnt_t count);
2385 int reserve_new_block(struct dnode_of_data *dn);
2386 int f2fs_get_block(struct dnode_of_data *dn, pgoff_t index);
2387 int f2fs_preallocate_blocks(struct kiocb *iocb, struct iov_iter *from);
2388 int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index);
2389 struct page *get_read_data_page(struct inode *inode, pgoff_t index,
2390 int op_flags, bool for_write);
2391 struct page *find_data_page(struct inode *inode, pgoff_t index);
2392 struct page *get_lock_data_page(struct inode *inode, pgoff_t index,
2394 struct page *get_new_data_page(struct inode *inode,
2395 struct page *ipage, pgoff_t index, bool new_i_size);
2396 int do_write_data_page(struct f2fs_io_info *fio);
2397 int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map,
2398 int create, int flag);
2399 int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
2400 u64 start, u64 len);
2401 void f2fs_set_page_dirty_nobuffers(struct page *page);
2402 void f2fs_invalidate_page(struct page *page, unsigned int offset,
2403 unsigned int length);
2404 int f2fs_release_page(struct page *page, gfp_t wait);
2405 #ifdef CONFIG_MIGRATION
2406 int f2fs_migrate_page(struct address_space *mapping, struct page *newpage,
2407 struct page *page, enum migrate_mode mode);
2413 int start_gc_thread(struct f2fs_sb_info *sbi);
2414 void stop_gc_thread(struct f2fs_sb_info *sbi);
2415 block_t start_bidx_of_node(unsigned int node_ofs, struct inode *inode);
2416 int f2fs_gc(struct f2fs_sb_info *sbi, bool sync, bool background,
2417 unsigned int segno);
2418 void build_gc_manager(struct f2fs_sb_info *sbi);
2423 int recover_fsync_data(struct f2fs_sb_info *sbi, bool check_only);
2424 bool space_for_roll_forward(struct f2fs_sb_info *sbi);
2429 #ifdef CONFIG_F2FS_STAT_FS
2430 struct f2fs_stat_info {
2431 struct list_head stat_list;
2432 struct f2fs_sb_info *sbi;
2433 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
2434 int main_area_segs, main_area_sections, main_area_zones;
2435 unsigned long long hit_largest, hit_cached, hit_rbtree;
2436 unsigned long long hit_total, total_ext;
2437 int ext_tree, zombie_tree, ext_node;
2438 int ndirty_node, ndirty_dent, ndirty_meta, ndirty_data, ndirty_imeta;
2440 unsigned int ndirty_dirs, ndirty_files, ndirty_all;
2441 int nats, dirty_nats, sits, dirty_sits;
2442 int free_nids, avail_nids, alloc_nids;
2443 int total_count, utilization;
2444 int bg_gc, nr_wb_cp_data, nr_wb_data;
2445 int nr_flushing, nr_flushed, nr_discarding, nr_discarded;
2447 unsigned int undiscard_blks;
2448 int inline_xattr, inline_inode, inline_dir, append, update, orphans;
2449 int aw_cnt, max_aw_cnt, vw_cnt, max_vw_cnt;
2450 unsigned int valid_count, valid_node_count, valid_inode_count, discard_blks;
2451 unsigned int bimodal, avg_vblocks;
2452 int util_free, util_valid, util_invalid;
2453 int rsvd_segs, overp_segs;
2454 int dirty_count, node_pages, meta_pages;
2455 int prefree_count, call_count, cp_count, bg_cp_count;
2456 int tot_segs, node_segs, data_segs, free_segs, free_secs;
2457 int bg_node_segs, bg_data_segs;
2458 int tot_blks, data_blks, node_blks;
2459 int bg_data_blks, bg_node_blks;
2460 int curseg[NR_CURSEG_TYPE];
2461 int cursec[NR_CURSEG_TYPE];
2462 int curzone[NR_CURSEG_TYPE];
2464 unsigned int segment_count[2];
2465 unsigned int block_count[2];
2466 unsigned int inplace_count;
2467 unsigned long long base_mem, cache_mem, page_mem;
2470 static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
2472 return (struct f2fs_stat_info *)sbi->stat_info;
2475 #define stat_inc_cp_count(si) ((si)->cp_count++)
2476 #define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++)
2477 #define stat_inc_call_count(si) ((si)->call_count++)
2478 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
2479 #define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++)
2480 #define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--)
2481 #define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext))
2482 #define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree))
2483 #define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest))
2484 #define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached))
2485 #define stat_inc_inline_xattr(inode) \
2487 if (f2fs_has_inline_xattr(inode)) \
2488 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
2490 #define stat_dec_inline_xattr(inode) \
2492 if (f2fs_has_inline_xattr(inode)) \
2493 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
2495 #define stat_inc_inline_inode(inode) \
2497 if (f2fs_has_inline_data(inode)) \
2498 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
2500 #define stat_dec_inline_inode(inode) \
2502 if (f2fs_has_inline_data(inode)) \
2503 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
2505 #define stat_inc_inline_dir(inode) \
2507 if (f2fs_has_inline_dentry(inode)) \
2508 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
2510 #define stat_dec_inline_dir(inode) \
2512 if (f2fs_has_inline_dentry(inode)) \
2513 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
2515 #define stat_inc_seg_type(sbi, curseg) \
2516 ((sbi)->segment_count[(curseg)->alloc_type]++)
2517 #define stat_inc_block_count(sbi, curseg) \
2518 ((sbi)->block_count[(curseg)->alloc_type]++)
2519 #define stat_inc_inplace_blocks(sbi) \
2520 (atomic_inc(&(sbi)->inplace_count))
2521 #define stat_inc_atomic_write(inode) \
2522 (atomic_inc(&F2FS_I_SB(inode)->aw_cnt))
2523 #define stat_dec_atomic_write(inode) \
2524 (atomic_dec(&F2FS_I_SB(inode)->aw_cnt))
2525 #define stat_update_max_atomic_write(inode) \
2527 int cur = atomic_read(&F2FS_I_SB(inode)->aw_cnt); \
2528 int max = atomic_read(&F2FS_I_SB(inode)->max_aw_cnt); \
2530 atomic_set(&F2FS_I_SB(inode)->max_aw_cnt, cur); \
2532 #define stat_inc_volatile_write(inode) \
2533 (atomic_inc(&F2FS_I_SB(inode)->vw_cnt))
2534 #define stat_dec_volatile_write(inode) \
2535 (atomic_dec(&F2FS_I_SB(inode)->vw_cnt))
2536 #define stat_update_max_volatile_write(inode) \
2538 int cur = atomic_read(&F2FS_I_SB(inode)->vw_cnt); \
2539 int max = atomic_read(&F2FS_I_SB(inode)->max_vw_cnt); \
2541 atomic_set(&F2FS_I_SB(inode)->max_vw_cnt, cur); \
2543 #define stat_inc_seg_count(sbi, type, gc_type) \
2545 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2547 if ((type) == SUM_TYPE_DATA) { \
2549 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
2552 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
2556 #define stat_inc_tot_blk_count(si, blks) \
2557 ((si)->tot_blks += (blks))
2559 #define stat_inc_data_blk_count(sbi, blks, gc_type) \
2561 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2562 stat_inc_tot_blk_count(si, blks); \
2563 si->data_blks += (blks); \
2564 si->bg_data_blks += ((gc_type) == BG_GC) ? (blks) : 0; \
2567 #define stat_inc_node_blk_count(sbi, blks, gc_type) \
2569 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2570 stat_inc_tot_blk_count(si, blks); \
2571 si->node_blks += (blks); \
2572 si->bg_node_blks += ((gc_type) == BG_GC) ? (blks) : 0; \
2575 int f2fs_build_stats(struct f2fs_sb_info *sbi);
2576 void f2fs_destroy_stats(struct f2fs_sb_info *sbi);
2577 int __init f2fs_create_root_stats(void);
2578 void f2fs_destroy_root_stats(void);
2580 #define stat_inc_cp_count(si) do { } while (0)
2581 #define stat_inc_bg_cp_count(si) do { } while (0)
2582 #define stat_inc_call_count(si) do { } while (0)
2583 #define stat_inc_bggc_count(si) do { } while (0)
2584 #define stat_inc_dirty_inode(sbi, type) do { } while (0)
2585 #define stat_dec_dirty_inode(sbi, type) do { } while (0)
2586 #define stat_inc_total_hit(sb) do { } while (0)
2587 #define stat_inc_rbtree_node_hit(sb) do { } while (0)
2588 #define stat_inc_largest_node_hit(sbi) do { } while (0)
2589 #define stat_inc_cached_node_hit(sbi) do { } while (0)
2590 #define stat_inc_inline_xattr(inode) do { } while (0)
2591 #define stat_dec_inline_xattr(inode) do { } while (0)
2592 #define stat_inc_inline_inode(inode) do { } while (0)
2593 #define stat_dec_inline_inode(inode) do { } while (0)
2594 #define stat_inc_inline_dir(inode) do { } while (0)
2595 #define stat_dec_inline_dir(inode) do { } while (0)
2596 #define stat_inc_atomic_write(inode) do { } while (0)
2597 #define stat_dec_atomic_write(inode) do { } while (0)
2598 #define stat_update_max_atomic_write(inode) do { } while (0)
2599 #define stat_inc_volatile_write(inode) do { } while (0)
2600 #define stat_dec_volatile_write(inode) do { } while (0)
2601 #define stat_update_max_volatile_write(inode) do { } while (0)
2602 #define stat_inc_seg_type(sbi, curseg) do { } while (0)
2603 #define stat_inc_block_count(sbi, curseg) do { } while (0)
2604 #define stat_inc_inplace_blocks(sbi) do { } while (0)
2605 #define stat_inc_seg_count(sbi, type, gc_type) do { } while (0)
2606 #define stat_inc_tot_blk_count(si, blks) do { } while (0)
2607 #define stat_inc_data_blk_count(sbi, blks, gc_type) do { } while (0)
2608 #define stat_inc_node_blk_count(sbi, blks, gc_type) do { } while (0)
2610 static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
2611 static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
2612 static inline int __init f2fs_create_root_stats(void) { return 0; }
2613 static inline void f2fs_destroy_root_stats(void) { }
2616 extern const struct file_operations f2fs_dir_operations;
2617 extern const struct file_operations f2fs_file_operations;
2618 extern const struct inode_operations f2fs_file_inode_operations;
2619 extern const struct address_space_operations f2fs_dblock_aops;
2620 extern const struct address_space_operations f2fs_node_aops;
2621 extern const struct address_space_operations f2fs_meta_aops;
2622 extern const struct inode_operations f2fs_dir_inode_operations;
2623 extern const struct inode_operations f2fs_symlink_inode_operations;
2624 extern const struct inode_operations f2fs_encrypted_symlink_inode_operations;
2625 extern const struct inode_operations f2fs_special_inode_operations;
2626 extern struct kmem_cache *inode_entry_slab;
2631 bool f2fs_may_inline_data(struct inode *inode);
2632 bool f2fs_may_inline_dentry(struct inode *inode);
2633 void read_inline_data(struct page *page, struct page *ipage);
2634 void truncate_inline_inode(struct inode *inode, struct page *ipage, u64 from);
2635 int f2fs_read_inline_data(struct inode *inode, struct page *page);
2636 int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page);
2637 int f2fs_convert_inline_inode(struct inode *inode);
2638 int f2fs_write_inline_data(struct inode *inode, struct page *page);
2639 bool recover_inline_data(struct inode *inode, struct page *npage);
2640 struct f2fs_dir_entry *find_in_inline_dir(struct inode *dir,
2641 struct fscrypt_name *fname, struct page **res_page);
2642 int make_empty_inline_dir(struct inode *inode, struct inode *parent,
2643 struct page *ipage);
2644 int f2fs_add_inline_entry(struct inode *dir, const struct qstr *new_name,
2645 const struct qstr *orig_name,
2646 struct inode *inode, nid_t ino, umode_t mode);
2647 void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry, struct page *page,
2648 struct inode *dir, struct inode *inode);
2649 bool f2fs_empty_inline_dir(struct inode *dir);
2650 int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx,
2651 struct fscrypt_str *fstr);
2652 int f2fs_inline_data_fiemap(struct inode *inode,
2653 struct fiemap_extent_info *fieinfo,
2654 __u64 start, __u64 len);
2659 unsigned long f2fs_shrink_count(struct shrinker *shrink,
2660 struct shrink_control *sc);
2661 unsigned long f2fs_shrink_scan(struct shrinker *shrink,
2662 struct shrink_control *sc);
2663 void f2fs_join_shrinker(struct f2fs_sb_info *sbi);
2664 void f2fs_leave_shrinker(struct f2fs_sb_info *sbi);
2669 struct rb_entry *__lookup_rb_tree(struct rb_root *root,
2670 struct rb_entry *cached_re, unsigned int ofs);
2671 struct rb_node **__lookup_rb_tree_for_insert(struct f2fs_sb_info *sbi,
2672 struct rb_root *root, struct rb_node **parent,
2674 struct rb_entry *__lookup_rb_tree_ret(struct rb_root *root,
2675 struct rb_entry *cached_re, unsigned int ofs,
2676 struct rb_entry **prev_entry, struct rb_entry **next_entry,
2677 struct rb_node ***insert_p, struct rb_node **insert_parent,
2679 bool __check_rb_tree_consistence(struct f2fs_sb_info *sbi,
2680 struct rb_root *root);
2681 unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *sbi, int nr_shrink);
2682 bool f2fs_init_extent_tree(struct inode *inode, struct f2fs_extent *i_ext);
2683 void f2fs_drop_extent_tree(struct inode *inode);
2684 unsigned int f2fs_destroy_extent_node(struct inode *inode);
2685 void f2fs_destroy_extent_tree(struct inode *inode);
2686 bool f2fs_lookup_extent_cache(struct inode *inode, pgoff_t pgofs,
2687 struct extent_info *ei);
2688 void f2fs_update_extent_cache(struct dnode_of_data *dn);
2689 void f2fs_update_extent_cache_range(struct dnode_of_data *dn,
2690 pgoff_t fofs, block_t blkaddr, unsigned int len);
2691 void init_extent_cache_info(struct f2fs_sb_info *sbi);
2692 int __init create_extent_cache(void);
2693 void destroy_extent_cache(void);
2698 int __init f2fs_register_sysfs(void);
2699 void f2fs_unregister_sysfs(void);
2700 int f2fs_init_sysfs(struct f2fs_sb_info *sbi);
2701 void f2fs_exit_sysfs(struct f2fs_sb_info *sbi);
2706 static inline bool f2fs_encrypted_inode(struct inode *inode)
2708 return file_is_encrypt(inode);
2711 static inline void f2fs_set_encrypted_inode(struct inode *inode)
2713 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2714 file_set_encrypt(inode);
2718 static inline bool f2fs_bio_encrypted(struct bio *bio)
2720 return bio->bi_private != NULL;
2723 static inline int f2fs_sb_has_crypto(struct super_block *sb)
2725 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_ENCRYPT);
2728 static inline int f2fs_sb_mounted_blkzoned(struct super_block *sb)
2730 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_BLKZONED);
2733 #ifdef CONFIG_BLK_DEV_ZONED
2734 static inline int get_blkz_type(struct f2fs_sb_info *sbi,
2735 struct block_device *bdev, block_t blkaddr)
2737 unsigned int zno = blkaddr >> sbi->log_blocks_per_blkz;
2740 for (i = 0; i < sbi->s_ndevs; i++)
2741 if (FDEV(i).bdev == bdev)
2742 return FDEV(i).blkz_type[zno];
2747 static inline bool f2fs_discard_en(struct f2fs_sb_info *sbi)
2749 struct request_queue *q = bdev_get_queue(sbi->sb->s_bdev);
2751 return blk_queue_discard(q) || f2fs_sb_mounted_blkzoned(sbi->sb);
2754 static inline void set_opt_mode(struct f2fs_sb_info *sbi, unsigned int mt)
2756 clear_opt(sbi, ADAPTIVE);
2757 clear_opt(sbi, LFS);
2760 case F2FS_MOUNT_ADAPTIVE:
2761 set_opt(sbi, ADAPTIVE);
2763 case F2FS_MOUNT_LFS:
2769 static inline bool f2fs_may_encrypt(struct inode *inode)
2771 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2772 umode_t mode = inode->i_mode;
2774 return (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode));