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/fscrypto.h>
26 #include <crypto/hash.h>
28 #ifdef CONFIG_F2FS_CHECK_FS
29 #define f2fs_bug_on(sbi, condition) BUG_ON(condition)
31 #define f2fs_bug_on(sbi, condition) \
33 if (unlikely(condition)) { \
35 set_sbi_flag(sbi, SBI_NEED_FSCK); \
40 #ifdef CONFIG_F2FS_FAULT_INJECTION
54 struct f2fs_fault_info {
56 unsigned int inject_rate;
57 unsigned int inject_type;
60 extern char *fault_name[FAULT_MAX];
61 #define IS_FAULT_SET(fi, type) (fi->inject_type & (1 << (type)))
67 #define F2FS_MOUNT_BG_GC 0x00000001
68 #define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
69 #define F2FS_MOUNT_DISCARD 0x00000004
70 #define F2FS_MOUNT_NOHEAP 0x00000008
71 #define F2FS_MOUNT_XATTR_USER 0x00000010
72 #define F2FS_MOUNT_POSIX_ACL 0x00000020
73 #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
74 #define F2FS_MOUNT_INLINE_XATTR 0x00000080
75 #define F2FS_MOUNT_INLINE_DATA 0x00000100
76 #define F2FS_MOUNT_INLINE_DENTRY 0x00000200
77 #define F2FS_MOUNT_FLUSH_MERGE 0x00000400
78 #define F2FS_MOUNT_NOBARRIER 0x00000800
79 #define F2FS_MOUNT_FASTBOOT 0x00001000
80 #define F2FS_MOUNT_EXTENT_CACHE 0x00002000
81 #define F2FS_MOUNT_FORCE_FG_GC 0x00004000
82 #define F2FS_MOUNT_DATA_FLUSH 0x00008000
83 #define F2FS_MOUNT_FAULT_INJECTION 0x00010000
84 #define F2FS_MOUNT_ADAPTIVE 0x00020000
85 #define F2FS_MOUNT_LFS 0x00040000
87 #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
88 #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
89 #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
91 #define ver_after(a, b) (typecheck(unsigned long long, a) && \
92 typecheck(unsigned long long, b) && \
93 ((long long)((a) - (b)) > 0))
95 typedef u32 block_t; /*
96 * should not change u32, since it is the on-disk block
97 * address format, __le32.
101 struct f2fs_mount_info {
105 #define F2FS_FEATURE_ENCRYPT 0x0001
106 #define F2FS_FEATURE_BLKZONED 0x0002
108 #define F2FS_HAS_FEATURE(sb, mask) \
109 ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
110 #define F2FS_SET_FEATURE(sb, mask) \
111 F2FS_SB(sb)->raw_super->feature |= cpu_to_le32(mask)
112 #define F2FS_CLEAR_FEATURE(sb, mask) \
113 F2FS_SB(sb)->raw_super->feature &= ~cpu_to_le32(mask)
116 * For checkpoint manager
131 #define DEF_BATCHED_TRIM_SECTIONS 2
132 #define BATCHED_TRIM_SEGMENTS(sbi) \
133 (SM_I(sbi)->trim_sections * (sbi)->segs_per_sec)
134 #define BATCHED_TRIM_BLOCKS(sbi) \
135 (BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg)
136 #define DEF_CP_INTERVAL 60 /* 60 secs */
137 #define DEF_IDLE_INTERVAL 5 /* 5 secs */
148 * For CP/NAT/SIT/SSA readahead
158 /* for the list of ino */
160 ORPHAN_INO, /* for orphan ino list */
161 APPEND_INO, /* for append ino list */
162 UPDATE_INO, /* for update ino list */
163 MAX_INO_ENTRY, /* max. list */
167 struct list_head list; /* list head */
168 nid_t ino; /* inode number */
171 /* for the list of inodes to be GCed */
173 struct list_head list; /* list head */
174 struct inode *inode; /* vfs inode pointer */
177 /* for the list of blockaddresses to be discarded */
178 struct discard_entry {
179 struct list_head list; /* list head */
180 block_t blkaddr; /* block address to be discarded */
181 int len; /* # of consecutive blocks of the discard */
185 struct list_head list;
187 struct completion event;
191 /* for the list of fsync inodes, used only during recovery */
192 struct fsync_inode_entry {
193 struct list_head list; /* list head */
194 struct inode *inode; /* vfs inode pointer */
195 block_t blkaddr; /* block address locating the last fsync */
196 block_t last_dentry; /* block address locating the last dentry */
199 #define nats_in_cursum(jnl) (le16_to_cpu(jnl->n_nats))
200 #define sits_in_cursum(jnl) (le16_to_cpu(jnl->n_sits))
202 #define nat_in_journal(jnl, i) (jnl->nat_j.entries[i].ne)
203 #define nid_in_journal(jnl, i) (jnl->nat_j.entries[i].nid)
204 #define sit_in_journal(jnl, i) (jnl->sit_j.entries[i].se)
205 #define segno_in_journal(jnl, i) (jnl->sit_j.entries[i].segno)
207 #define MAX_NAT_JENTRIES(jnl) (NAT_JOURNAL_ENTRIES - nats_in_cursum(jnl))
208 #define MAX_SIT_JENTRIES(jnl) (SIT_JOURNAL_ENTRIES - sits_in_cursum(jnl))
210 static inline int update_nats_in_cursum(struct f2fs_journal *journal, int i)
212 int before = nats_in_cursum(journal);
213 journal->n_nats = cpu_to_le16(before + i);
217 static inline int update_sits_in_cursum(struct f2fs_journal *journal, int i)
219 int before = sits_in_cursum(journal);
220 journal->n_sits = cpu_to_le16(before + i);
224 static inline bool __has_cursum_space(struct f2fs_journal *journal,
227 if (type == NAT_JOURNAL)
228 return size <= MAX_NAT_JENTRIES(journal);
229 return size <= MAX_SIT_JENTRIES(journal);
235 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
236 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
237 #define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
239 #define F2FS_IOCTL_MAGIC 0xf5
240 #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
241 #define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
242 #define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
243 #define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
244 #define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
245 #define F2FS_IOC_GARBAGE_COLLECT _IO(F2FS_IOCTL_MAGIC, 6)
246 #define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7)
247 #define F2FS_IOC_DEFRAGMENT _IO(F2FS_IOCTL_MAGIC, 8)
248 #define F2FS_IOC_MOVE_RANGE _IOWR(F2FS_IOCTL_MAGIC, 9, \
249 struct f2fs_move_range)
251 #define F2FS_IOC_SET_ENCRYPTION_POLICY FS_IOC_SET_ENCRYPTION_POLICY
252 #define F2FS_IOC_GET_ENCRYPTION_POLICY FS_IOC_GET_ENCRYPTION_POLICY
253 #define F2FS_IOC_GET_ENCRYPTION_PWSALT FS_IOC_GET_ENCRYPTION_PWSALT
256 * should be same as XFS_IOC_GOINGDOWN.
257 * Flags for going down operation used by FS_IOC_GOINGDOWN
259 #define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
260 #define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
261 #define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
262 #define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
263 #define F2FS_GOING_DOWN_METAFLUSH 0x3 /* going down with meta flush */
265 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
267 * ioctl commands in 32 bit emulation
269 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
270 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
271 #define F2FS_IOC32_GETVERSION FS_IOC32_GETVERSION
274 struct f2fs_defragment {
279 struct f2fs_move_range {
280 u32 dst_fd; /* destination fd */
281 u64 pos_in; /* start position in src_fd */
282 u64 pos_out; /* start position in dst_fd */
283 u64 len; /* size to move */
287 * For INODE and NODE manager
289 /* for directory operations */
290 struct f2fs_dentry_ptr {
293 struct f2fs_dir_entry *dentry;
294 __u8 (*filename)[F2FS_SLOT_LEN];
298 static inline void make_dentry_ptr(struct inode *inode,
299 struct f2fs_dentry_ptr *d, void *src, int type)
304 struct f2fs_dentry_block *t = (struct f2fs_dentry_block *)src;
305 d->max = NR_DENTRY_IN_BLOCK;
306 d->bitmap = &t->dentry_bitmap;
307 d->dentry = t->dentry;
308 d->filename = t->filename;
310 struct f2fs_inline_dentry *t = (struct f2fs_inline_dentry *)src;
311 d->max = NR_INLINE_DENTRY;
312 d->bitmap = &t->dentry_bitmap;
313 d->dentry = t->dentry;
314 d->filename = t->filename;
319 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
320 * as its node offset to distinguish from index node blocks.
321 * But some bits are used to mark the node block.
323 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
326 ALLOC_NODE, /* allocate a new node page if needed */
327 LOOKUP_NODE, /* look up a node without readahead */
329 * look up a node with readahead called
334 #define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */
336 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
338 /* vector size for gang look-up from extent cache that consists of radix tree */
339 #define EXT_TREE_VEC_SIZE 64
341 /* for in-memory extent cache entry */
342 #define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
344 /* number of extent info in extent cache we try to shrink */
345 #define EXTENT_CACHE_SHRINK_NUMBER 128
348 unsigned int fofs; /* start offset in a file */
349 u32 blk; /* start block address of the extent */
350 unsigned int len; /* length of the extent */
354 struct rb_node rb_node; /* rb node located in rb-tree */
355 struct list_head list; /* node in global extent list of sbi */
356 struct extent_info ei; /* extent info */
357 struct extent_tree *et; /* extent tree pointer */
361 nid_t ino; /* inode number */
362 struct rb_root root; /* root of extent info rb-tree */
363 struct extent_node *cached_en; /* recently accessed extent node */
364 struct extent_info largest; /* largested extent info */
365 struct list_head list; /* to be used by sbi->zombie_list */
366 rwlock_t lock; /* protect extent info rb-tree */
367 atomic_t node_cnt; /* # of extent node in rb-tree*/
371 * This structure is taken from ext4_map_blocks.
373 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
375 #define F2FS_MAP_NEW (1 << BH_New)
376 #define F2FS_MAP_MAPPED (1 << BH_Mapped)
377 #define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten)
378 #define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
381 struct f2fs_map_blocks {
385 unsigned int m_flags;
386 pgoff_t *m_next_pgofs; /* point next possible non-hole pgofs */
389 /* for flag in get_data_block */
390 #define F2FS_GET_BLOCK_READ 0
391 #define F2FS_GET_BLOCK_DIO 1
392 #define F2FS_GET_BLOCK_FIEMAP 2
393 #define F2FS_GET_BLOCK_BMAP 3
394 #define F2FS_GET_BLOCK_PRE_DIO 4
395 #define F2FS_GET_BLOCK_PRE_AIO 5
398 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
400 #define FADVISE_COLD_BIT 0x01
401 #define FADVISE_LOST_PINO_BIT 0x02
402 #define FADVISE_ENCRYPT_BIT 0x04
403 #define FADVISE_ENC_NAME_BIT 0x08
404 #define FADVISE_KEEP_SIZE_BIT 0x10
406 #define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
407 #define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
408 #define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
409 #define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
410 #define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
411 #define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
412 #define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
413 #define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
414 #define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
415 #define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
416 #define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
417 #define file_keep_isize(inode) is_file(inode, FADVISE_KEEP_SIZE_BIT)
418 #define file_set_keep_isize(inode) set_file(inode, FADVISE_KEEP_SIZE_BIT)
420 #define DEF_DIR_LEVEL 0
422 struct f2fs_inode_info {
423 struct inode vfs_inode; /* serve a vfs inode */
424 unsigned long i_flags; /* keep an inode flags for ioctl */
425 unsigned char i_advise; /* use to give file attribute hints */
426 unsigned char i_dir_level; /* use for dentry level for large dir */
427 unsigned int i_current_depth; /* use only in directory structure */
428 unsigned int i_pino; /* parent inode number */
429 umode_t i_acl_mode; /* keep file acl mode temporarily */
431 /* Use below internally in f2fs*/
432 unsigned long flags; /* use to pass per-file flags */
433 struct rw_semaphore i_sem; /* protect fi info */
434 atomic_t dirty_pages; /* # of dirty pages */
435 f2fs_hash_t chash; /* hash value of given file name */
436 unsigned int clevel; /* maximum level of given file name */
437 nid_t i_xattr_nid; /* node id that contains xattrs */
438 unsigned long long xattr_ver; /* cp version of xattr modification */
439 loff_t last_disk_size; /* lastly written file size */
441 struct list_head dirty_list; /* dirty list for dirs and files */
442 struct list_head gdirty_list; /* linked in global dirty list */
443 struct list_head inmem_pages; /* inmemory pages managed by f2fs */
444 struct mutex inmem_lock; /* lock for inmemory pages */
445 struct extent_tree *extent_tree; /* cached extent_tree entry */
446 struct rw_semaphore dio_rwsem[2];/* avoid racing between dio and gc */
449 static inline void get_extent_info(struct extent_info *ext,
450 struct f2fs_extent *i_ext)
452 ext->fofs = le32_to_cpu(i_ext->fofs);
453 ext->blk = le32_to_cpu(i_ext->blk);
454 ext->len = le32_to_cpu(i_ext->len);
457 static inline void set_raw_extent(struct extent_info *ext,
458 struct f2fs_extent *i_ext)
460 i_ext->fofs = cpu_to_le32(ext->fofs);
461 i_ext->blk = cpu_to_le32(ext->blk);
462 i_ext->len = cpu_to_le32(ext->len);
465 static inline void set_extent_info(struct extent_info *ei, unsigned int fofs,
466 u32 blk, unsigned int len)
473 static inline bool __is_extent_same(struct extent_info *ei1,
474 struct extent_info *ei2)
476 return (ei1->fofs == ei2->fofs && ei1->blk == ei2->blk &&
477 ei1->len == ei2->len);
480 static inline bool __is_extent_mergeable(struct extent_info *back,
481 struct extent_info *front)
483 return (back->fofs + back->len == front->fofs &&
484 back->blk + back->len == front->blk);
487 static inline bool __is_back_mergeable(struct extent_info *cur,
488 struct extent_info *back)
490 return __is_extent_mergeable(back, cur);
493 static inline bool __is_front_mergeable(struct extent_info *cur,
494 struct extent_info *front)
496 return __is_extent_mergeable(cur, front);
499 extern void f2fs_mark_inode_dirty_sync(struct inode *, bool);
500 static inline void __try_update_largest_extent(struct inode *inode,
501 struct extent_tree *et, struct extent_node *en)
503 if (en->ei.len > et->largest.len) {
504 et->largest = en->ei;
505 f2fs_mark_inode_dirty_sync(inode, true);
515 struct f2fs_nm_info {
516 block_t nat_blkaddr; /* base disk address of NAT */
517 nid_t max_nid; /* maximum possible node ids */
518 nid_t available_nids; /* # of available node ids */
519 nid_t next_scan_nid; /* the next nid to be scanned */
520 unsigned int ram_thresh; /* control the memory footprint */
521 unsigned int ra_nid_pages; /* # of nid pages to be readaheaded */
522 unsigned int dirty_nats_ratio; /* control dirty nats ratio threshold */
524 /* NAT cache management */
525 struct radix_tree_root nat_root;/* root of the nat entry cache */
526 struct radix_tree_root nat_set_root;/* root of the nat set cache */
527 struct rw_semaphore nat_tree_lock; /* protect nat_tree_lock */
528 struct list_head nat_entries; /* cached nat entry list (clean) */
529 unsigned int nat_cnt; /* the # of cached nat entries */
530 unsigned int dirty_nat_cnt; /* total num of nat entries in set */
532 /* free node ids management */
533 struct radix_tree_root free_nid_root;/* root of the free_nid cache */
534 struct list_head nid_list[MAX_NID_LIST];/* lists for free nids */
535 unsigned int nid_cnt[MAX_NID_LIST]; /* the number of free node id */
536 spinlock_t nid_list_lock; /* protect nid lists ops */
537 struct mutex build_lock; /* lock for build free nids */
540 char *nat_bitmap; /* NAT bitmap pointer */
541 int bitmap_size; /* bitmap size */
545 * this structure is used as one of function parameters.
546 * all the information are dedicated to a given direct node block determined
547 * by the data offset in a file.
549 struct dnode_of_data {
550 struct inode *inode; /* vfs inode pointer */
551 struct page *inode_page; /* its inode page, NULL is possible */
552 struct page *node_page; /* cached direct node page */
553 nid_t nid; /* node id of the direct node block */
554 unsigned int ofs_in_node; /* data offset in the node page */
555 bool inode_page_locked; /* inode page is locked or not */
556 bool node_changed; /* is node block changed */
557 char cur_level; /* level of hole node page */
558 char max_level; /* level of current page located */
559 block_t data_blkaddr; /* block address of the node block */
562 static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
563 struct page *ipage, struct page *npage, nid_t nid)
565 memset(dn, 0, sizeof(*dn));
567 dn->inode_page = ipage;
568 dn->node_page = npage;
575 * By default, there are 6 active log areas across the whole main area.
576 * When considering hot and cold data separation to reduce cleaning overhead,
577 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
579 * In the current design, you should not change the numbers intentionally.
580 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
581 * logs individually according to the underlying devices. (default: 6)
582 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
583 * data and 8 for node logs.
585 #define NR_CURSEG_DATA_TYPE (3)
586 #define NR_CURSEG_NODE_TYPE (3)
587 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
590 CURSEG_HOT_DATA = 0, /* directory entry blocks */
591 CURSEG_WARM_DATA, /* data blocks */
592 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
593 CURSEG_HOT_NODE, /* direct node blocks of directory files */
594 CURSEG_WARM_NODE, /* direct node blocks of normal files */
595 CURSEG_COLD_NODE, /* indirect node blocks */
600 struct completion wait;
601 struct llist_node llnode;
605 struct flush_cmd_control {
606 struct task_struct *f2fs_issue_flush; /* flush thread */
607 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
608 atomic_t submit_flush; /* # of issued flushes */
609 struct llist_head issue_list; /* list for command issue */
610 struct llist_node *dispatch_list; /* list for command dispatch */
613 struct f2fs_sm_info {
614 struct sit_info *sit_info; /* whole segment information */
615 struct free_segmap_info *free_info; /* free segment information */
616 struct dirty_seglist_info *dirty_info; /* dirty segment information */
617 struct curseg_info *curseg_array; /* active segment information */
619 block_t seg0_blkaddr; /* block address of 0'th segment */
620 block_t main_blkaddr; /* start block address of main area */
621 block_t ssa_blkaddr; /* start block address of SSA area */
623 unsigned int segment_count; /* total # of segments */
624 unsigned int main_segments; /* # of segments in main area */
625 unsigned int reserved_segments; /* # of reserved segments */
626 unsigned int ovp_segments; /* # of overprovision segments */
628 /* a threshold to reclaim prefree segments */
629 unsigned int rec_prefree_segments;
631 /* for small discard management */
632 struct list_head discard_list; /* 4KB discard list */
633 struct list_head wait_list; /* linked with issued discard bio */
634 int nr_discards; /* # of discards in the list */
635 int max_discards; /* max. discards to be issued */
637 /* for batched trimming */
638 unsigned int trim_sections; /* # of sections to trim */
640 struct list_head sit_entry_set; /* sit entry set list */
642 unsigned int ipu_policy; /* in-place-update policy */
643 unsigned int min_ipu_util; /* in-place-update threshold */
644 unsigned int min_fsync_blocks; /* threshold for fsync */
646 /* for flush command control */
647 struct flush_cmd_control *cmd_control_info;
655 * COUNT_TYPE for monitoring
657 * f2fs monitors the number of several block types such as on-writeback,
658 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
660 #define WB_DATA_TYPE(p) (__is_cp_guaranteed(p) ? F2FS_WB_CP_DATA : F2FS_WB_DATA)
674 * The below are the page types of bios used in submit_bio().
675 * The available types are:
676 * DATA User data pages. It operates as async mode.
677 * NODE Node pages. It operates as async mode.
678 * META FS metadata pages such as SIT, NAT, CP.
679 * NR_PAGE_TYPE The number of page types.
680 * META_FLUSH Make sure the previous pages are written
681 * with waiting the bio's completion
682 * ... Only can be used with META.
684 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
691 INMEM, /* the below types are used by tracepoints only. */
698 struct f2fs_io_info {
699 struct f2fs_sb_info *sbi; /* f2fs_sb_info pointer */
700 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
701 int op; /* contains REQ_OP_ */
702 int op_flags; /* req_flag_bits */
703 block_t new_blkaddr; /* new block address to be written */
704 block_t old_blkaddr; /* old block address before Cow */
705 struct page *page; /* page to be written */
706 struct page *encrypted_page; /* encrypted page */
709 #define is_read_io(rw) (rw == READ)
710 struct f2fs_bio_info {
711 struct f2fs_sb_info *sbi; /* f2fs superblock */
712 struct bio *bio; /* bios to merge */
713 sector_t last_block_in_bio; /* last block number */
714 struct f2fs_io_info fio; /* store buffered io info. */
715 struct rw_semaphore io_rwsem; /* blocking op for bio */
718 #define FDEV(i) (sbi->devs[i])
719 #define RDEV(i) (raw_super->devs[i])
720 struct f2fs_dev_info {
721 struct block_device *bdev;
722 char path[MAX_PATH_LEN];
723 unsigned int total_segments;
726 #ifdef CONFIG_BLK_DEV_ZONED
727 unsigned int nr_blkz; /* Total number of zones */
728 u8 *blkz_type; /* Array of zones type */
733 DIR_INODE, /* for dirty dir inode */
734 FILE_INODE, /* for dirty regular/symlink inode */
735 DIRTY_META, /* for all dirtied inode metadata */
739 /* for inner inode cache management */
740 struct inode_management {
741 struct radix_tree_root ino_root; /* ino entry array */
742 spinlock_t ino_lock; /* for ino entry lock */
743 struct list_head ino_list; /* inode list head */
744 unsigned long ino_num; /* number of entries */
747 /* For s_flag in struct f2fs_sb_info */
749 SBI_IS_DIRTY, /* dirty flag for checkpoint */
750 SBI_IS_CLOSE, /* specify unmounting */
751 SBI_NEED_FSCK, /* need fsck.f2fs to fix */
752 SBI_POR_DOING, /* recovery is doing or not */
753 SBI_NEED_SB_WRITE, /* need to recover superblock */
754 SBI_NEED_CP, /* need to checkpoint */
763 struct f2fs_sb_info {
764 struct super_block *sb; /* pointer to VFS super block */
765 struct proc_dir_entry *s_proc; /* proc entry */
766 struct f2fs_super_block *raw_super; /* raw super block pointer */
767 int valid_super_block; /* valid super block no */
768 unsigned long s_flag; /* flags for sbi */
770 #ifdef CONFIG_BLK_DEV_ZONED
771 unsigned int blocks_per_blkz; /* F2FS blocks per zone */
772 unsigned int log_blocks_per_blkz; /* log2 F2FS blocks per zone */
775 /* for node-related operations */
776 struct f2fs_nm_info *nm_info; /* node manager */
777 struct inode *node_inode; /* cache node blocks */
779 /* for segment-related operations */
780 struct f2fs_sm_info *sm_info; /* segment manager */
782 /* for bio operations */
783 struct f2fs_bio_info read_io; /* for read bios */
784 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */
785 struct mutex wio_mutex[NODE + 1]; /* bio ordering for NODE/DATA */
788 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
789 int cur_cp_pack; /* remain current cp pack */
790 spinlock_t cp_lock; /* for flag in ckpt */
791 struct inode *meta_inode; /* cache meta blocks */
792 struct mutex cp_mutex; /* checkpoint procedure lock */
793 struct rw_semaphore cp_rwsem; /* blocking FS operations */
794 struct rw_semaphore node_write; /* locking node writes */
795 wait_queue_head_t cp_wait;
796 unsigned long last_time[MAX_TIME]; /* to store time in jiffies */
797 long interval_time[MAX_TIME]; /* to store thresholds */
799 struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */
801 /* for orphan inode, use 0'th array */
802 unsigned int max_orphans; /* max orphan inodes */
804 /* for inode management */
805 struct list_head inode_list[NR_INODE_TYPE]; /* dirty inode list */
806 spinlock_t inode_lock[NR_INODE_TYPE]; /* for dirty inode list lock */
808 /* for extent tree cache */
809 struct radix_tree_root extent_tree_root;/* cache extent cache entries */
810 struct rw_semaphore extent_tree_lock; /* locking extent radix tree */
811 struct list_head extent_list; /* lru list for shrinker */
812 spinlock_t extent_lock; /* locking extent lru list */
813 atomic_t total_ext_tree; /* extent tree count */
814 struct list_head zombie_list; /* extent zombie tree list */
815 atomic_t total_zombie_tree; /* extent zombie tree count */
816 atomic_t total_ext_node; /* extent info count */
818 /* basic filesystem units */
819 unsigned int log_sectors_per_block; /* log2 sectors per block */
820 unsigned int log_blocksize; /* log2 block size */
821 unsigned int blocksize; /* block size */
822 unsigned int root_ino_num; /* root inode number*/
823 unsigned int node_ino_num; /* node inode number*/
824 unsigned int meta_ino_num; /* meta inode number*/
825 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
826 unsigned int blocks_per_seg; /* blocks per segment */
827 unsigned int segs_per_sec; /* segments per section */
828 unsigned int secs_per_zone; /* sections per zone */
829 unsigned int total_sections; /* total section count */
830 unsigned int total_node_count; /* total node block count */
831 unsigned int total_valid_node_count; /* valid node block count */
832 loff_t max_file_blocks; /* max block index of file */
833 int active_logs; /* # of active logs */
834 int dir_level; /* directory level */
836 block_t user_block_count; /* # of user blocks */
837 block_t total_valid_block_count; /* # of valid blocks */
838 block_t discard_blks; /* discard command candidats */
839 block_t last_valid_block_count; /* for recovery */
840 u32 s_next_generation; /* for NFS support */
842 /* # of pages, see count_type */
843 atomic_t nr_pages[NR_COUNT_TYPE];
844 /* # of allocated blocks */
845 struct percpu_counter alloc_valid_block_count;
847 /* valid inode count */
848 struct percpu_counter total_valid_inode_count;
850 struct f2fs_mount_info mount_opt; /* mount options */
852 /* for cleaning operations */
853 struct mutex gc_mutex; /* mutex for GC */
854 struct f2fs_gc_kthread *gc_thread; /* GC thread */
855 unsigned int cur_victim_sec; /* current victim section num */
857 /* maximum # of trials to find a victim segment for SSR and GC */
858 unsigned int max_victim_search;
861 * for stat information.
862 * one is for the LFS mode, and the other is for the SSR mode.
864 #ifdef CONFIG_F2FS_STAT_FS
865 struct f2fs_stat_info *stat_info; /* FS status information */
866 unsigned int segment_count[2]; /* # of allocated segments */
867 unsigned int block_count[2]; /* # of allocated blocks */
868 atomic_t inplace_count; /* # of inplace update */
869 atomic64_t total_hit_ext; /* # of lookup extent cache */
870 atomic64_t read_hit_rbtree; /* # of hit rbtree extent node */
871 atomic64_t read_hit_largest; /* # of hit largest extent node */
872 atomic64_t read_hit_cached; /* # of hit cached extent node */
873 atomic_t inline_xattr; /* # of inline_xattr inodes */
874 atomic_t inline_inode; /* # of inline_data inodes */
875 atomic_t inline_dir; /* # of inline_dentry inodes */
876 int bg_gc; /* background gc calls */
877 unsigned int ndirty_inode[NR_INODE_TYPE]; /* # of dirty inodes */
879 unsigned int last_victim[2]; /* last victim segment # */
880 spinlock_t stat_lock; /* lock for stat operations */
882 /* For sysfs suppport */
883 struct kobject s_kobj;
884 struct completion s_kobj_unregister;
886 /* For shrinker support */
887 struct list_head s_list;
888 int s_ndevs; /* number of devices */
889 struct f2fs_dev_info *devs; /* for device list */
890 struct mutex umount_mutex;
891 unsigned int shrinker_run_no;
893 /* For write statistics */
894 u64 sectors_written_start;
897 /* Reference to checksum algorithm driver via cryptoapi */
898 struct crypto_shash *s_chksum_driver;
900 /* For fault injection */
901 #ifdef CONFIG_F2FS_FAULT_INJECTION
902 struct f2fs_fault_info fault_info;
906 #ifdef CONFIG_F2FS_FAULT_INJECTION
907 static inline bool time_to_inject(struct f2fs_sb_info *sbi, int type)
909 struct f2fs_fault_info *ffi = &sbi->fault_info;
911 if (!ffi->inject_rate)
914 if (!IS_FAULT_SET(ffi, type))
917 atomic_inc(&ffi->inject_ops);
918 if (atomic_read(&ffi->inject_ops) >= ffi->inject_rate) {
919 atomic_set(&ffi->inject_ops, 0);
920 printk("%sF2FS-fs : inject %s in %pF\n",
923 __builtin_return_address(0));
930 /* For write statistics. Suppose sector size is 512 bytes,
931 * and the return value is in kbytes. s is of struct f2fs_sb_info.
933 #define BD_PART_WRITTEN(s) \
934 (((u64)part_stat_read(s->sb->s_bdev->bd_part, sectors[1]) - \
935 s->sectors_written_start) >> 1)
937 static inline void f2fs_update_time(struct f2fs_sb_info *sbi, int type)
939 sbi->last_time[type] = jiffies;
942 static inline bool f2fs_time_over(struct f2fs_sb_info *sbi, int type)
944 struct timespec ts = {sbi->interval_time[type], 0};
945 unsigned long interval = timespec_to_jiffies(&ts);
947 return time_after(jiffies, sbi->last_time[type] + interval);
950 static inline bool is_idle(struct f2fs_sb_info *sbi)
952 struct block_device *bdev = sbi->sb->s_bdev;
953 struct request_queue *q = bdev_get_queue(bdev);
954 struct request_list *rl = &q->root_rl;
956 if (rl->count[BLK_RW_SYNC] || rl->count[BLK_RW_ASYNC])
959 return f2fs_time_over(sbi, REQ_TIME);
965 static inline u32 f2fs_crc32(struct f2fs_sb_info *sbi, const void *address,
968 SHASH_DESC_ON_STACK(shash, sbi->s_chksum_driver);
969 u32 *ctx = (u32 *)shash_desc_ctx(shash);
972 shash->tfm = sbi->s_chksum_driver;
974 *ctx = F2FS_SUPER_MAGIC;
976 err = crypto_shash_update(shash, address, length);
982 static inline bool f2fs_crc_valid(struct f2fs_sb_info *sbi, __u32 blk_crc,
983 void *buf, size_t buf_size)
985 return f2fs_crc32(sbi, buf, buf_size) == blk_crc;
988 static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
990 return container_of(inode, struct f2fs_inode_info, vfs_inode);
993 static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
995 return sb->s_fs_info;
998 static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
1000 return F2FS_SB(inode->i_sb);
1003 static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
1005 return F2FS_I_SB(mapping->host);
1008 static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
1010 return F2FS_M_SB(page->mapping);
1013 static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
1015 return (struct f2fs_super_block *)(sbi->raw_super);
1018 static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
1020 return (struct f2fs_checkpoint *)(sbi->ckpt);
1023 static inline struct f2fs_node *F2FS_NODE(struct page *page)
1025 return (struct f2fs_node *)page_address(page);
1028 static inline struct f2fs_inode *F2FS_INODE(struct page *page)
1030 return &((struct f2fs_node *)page_address(page))->i;
1033 static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
1035 return (struct f2fs_nm_info *)(sbi->nm_info);
1038 static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
1040 return (struct f2fs_sm_info *)(sbi->sm_info);
1043 static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
1045 return (struct sit_info *)(SM_I(sbi)->sit_info);
1048 static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
1050 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
1053 static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
1055 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
1058 static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
1060 return sbi->meta_inode->i_mapping;
1063 static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
1065 return sbi->node_inode->i_mapping;
1068 static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
1070 return test_bit(type, &sbi->s_flag);
1073 static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
1075 set_bit(type, &sbi->s_flag);
1078 static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
1080 clear_bit(type, &sbi->s_flag);
1083 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
1085 return le64_to_cpu(cp->checkpoint_ver);
1088 static inline bool __is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1090 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1092 return ckpt_flags & f;
1095 static inline bool is_set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1097 return __is_set_ckpt_flags(F2FS_CKPT(sbi), f);
1100 static inline void __set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1102 unsigned int ckpt_flags;
1104 ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1106 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1109 static inline void set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1111 spin_lock(&sbi->cp_lock);
1112 __set_ckpt_flags(F2FS_CKPT(sbi), f);
1113 spin_unlock(&sbi->cp_lock);
1116 static inline void __clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1118 unsigned int ckpt_flags;
1120 ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1122 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1125 static inline void clear_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1127 spin_lock(&sbi->cp_lock);
1128 __clear_ckpt_flags(F2FS_CKPT(sbi), f);
1129 spin_unlock(&sbi->cp_lock);
1132 static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
1134 down_read(&sbi->cp_rwsem);
1137 static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
1139 up_read(&sbi->cp_rwsem);
1142 static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
1144 down_write(&sbi->cp_rwsem);
1147 static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
1149 up_write(&sbi->cp_rwsem);
1152 static inline int __get_cp_reason(struct f2fs_sb_info *sbi)
1154 int reason = CP_SYNC;
1156 if (test_opt(sbi, FASTBOOT))
1157 reason = CP_FASTBOOT;
1158 if (is_sbi_flag_set(sbi, SBI_IS_CLOSE))
1163 static inline bool __remain_node_summaries(int reason)
1165 return (reason == CP_UMOUNT || reason == CP_FASTBOOT);
1168 static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
1170 return (is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG) ||
1171 is_set_ckpt_flags(sbi, CP_FASTBOOT_FLAG));
1175 * Check whether the given nid is within node id range.
1177 static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
1179 if (unlikely(nid < F2FS_ROOT_INO(sbi)))
1181 if (unlikely(nid >= NM_I(sbi)->max_nid))
1186 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
1189 * Check whether the inode has blocks or not
1191 static inline int F2FS_HAS_BLOCKS(struct inode *inode)
1193 if (F2FS_I(inode)->i_xattr_nid)
1194 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1;
1196 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS;
1199 static inline bool f2fs_has_xattr_block(unsigned int ofs)
1201 return ofs == XATTR_NODE_OFFSET;
1204 static inline void f2fs_i_blocks_write(struct inode *, blkcnt_t, bool);
1205 static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
1206 struct inode *inode, blkcnt_t *count)
1210 #ifdef CONFIG_F2FS_FAULT_INJECTION
1211 if (time_to_inject(sbi, FAULT_BLOCK))
1215 * let's increase this in prior to actual block count change in order
1216 * for f2fs_sync_file to avoid data races when deciding checkpoint.
1218 percpu_counter_add(&sbi->alloc_valid_block_count, (*count));
1220 spin_lock(&sbi->stat_lock);
1221 sbi->total_valid_block_count += (block_t)(*count);
1222 if (unlikely(sbi->total_valid_block_count > sbi->user_block_count)) {
1223 diff = sbi->total_valid_block_count - sbi->user_block_count;
1225 sbi->total_valid_block_count = sbi->user_block_count;
1227 spin_unlock(&sbi->stat_lock);
1228 percpu_counter_sub(&sbi->alloc_valid_block_count, diff);
1232 spin_unlock(&sbi->stat_lock);
1234 f2fs_i_blocks_write(inode, *count, true);
1238 static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
1239 struct inode *inode,
1242 spin_lock(&sbi->stat_lock);
1243 f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
1244 f2fs_bug_on(sbi, inode->i_blocks < count);
1245 sbi->total_valid_block_count -= (block_t)count;
1246 spin_unlock(&sbi->stat_lock);
1247 f2fs_i_blocks_write(inode, count, false);
1250 static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
1252 atomic_inc(&sbi->nr_pages[count_type]);
1254 if (count_type == F2FS_DIRTY_DATA || count_type == F2FS_INMEM_PAGES ||
1255 count_type == F2FS_WB_CP_DATA || count_type == F2FS_WB_DATA)
1258 set_sbi_flag(sbi, SBI_IS_DIRTY);
1261 static inline void inode_inc_dirty_pages(struct inode *inode)
1263 atomic_inc(&F2FS_I(inode)->dirty_pages);
1264 inc_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
1265 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
1268 static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
1270 atomic_dec(&sbi->nr_pages[count_type]);
1273 static inline void inode_dec_dirty_pages(struct inode *inode)
1275 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
1276 !S_ISLNK(inode->i_mode))
1279 atomic_dec(&F2FS_I(inode)->dirty_pages);
1280 dec_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
1281 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
1284 static inline s64 get_pages(struct f2fs_sb_info *sbi, int count_type)
1286 return atomic_read(&sbi->nr_pages[count_type]);
1289 static inline int get_dirty_pages(struct inode *inode)
1291 return atomic_read(&F2FS_I(inode)->dirty_pages);
1294 static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
1296 unsigned int pages_per_sec = sbi->segs_per_sec * sbi->blocks_per_seg;
1297 unsigned int segs = (get_pages(sbi, block_type) + pages_per_sec - 1) >>
1298 sbi->log_blocks_per_seg;
1300 return segs / sbi->segs_per_sec;
1303 static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
1305 return sbi->total_valid_block_count;
1308 static inline block_t discard_blocks(struct f2fs_sb_info *sbi)
1310 return sbi->discard_blks;
1313 static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
1315 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1317 /* return NAT or SIT bitmap */
1318 if (flag == NAT_BITMAP)
1319 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
1320 else if (flag == SIT_BITMAP)
1321 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
1326 static inline block_t __cp_payload(struct f2fs_sb_info *sbi)
1328 return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
1331 static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
1333 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1336 if (__cp_payload(sbi) > 0) {
1337 if (flag == NAT_BITMAP)
1338 return &ckpt->sit_nat_version_bitmap;
1340 return (unsigned char *)ckpt + F2FS_BLKSIZE;
1342 offset = (flag == NAT_BITMAP) ?
1343 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
1344 return &ckpt->sit_nat_version_bitmap + offset;
1348 static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
1350 block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
1352 if (sbi->cur_cp_pack == 2)
1353 start_addr += sbi->blocks_per_seg;
1357 static inline block_t __start_cp_next_addr(struct f2fs_sb_info *sbi)
1359 block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
1361 if (sbi->cur_cp_pack == 1)
1362 start_addr += sbi->blocks_per_seg;
1366 static inline void __set_cp_next_pack(struct f2fs_sb_info *sbi)
1368 sbi->cur_cp_pack = (sbi->cur_cp_pack == 1) ? 2 : 1;
1371 static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
1373 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
1376 static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
1377 struct inode *inode)
1379 block_t valid_block_count;
1380 unsigned int valid_node_count;
1382 spin_lock(&sbi->stat_lock);
1384 valid_block_count = sbi->total_valid_block_count + 1;
1385 if (unlikely(valid_block_count > sbi->user_block_count)) {
1386 spin_unlock(&sbi->stat_lock);
1390 valid_node_count = sbi->total_valid_node_count + 1;
1391 if (unlikely(valid_node_count > sbi->total_node_count)) {
1392 spin_unlock(&sbi->stat_lock);
1397 f2fs_i_blocks_write(inode, 1, true);
1399 sbi->total_valid_node_count++;
1400 sbi->total_valid_block_count++;
1401 spin_unlock(&sbi->stat_lock);
1403 percpu_counter_inc(&sbi->alloc_valid_block_count);
1407 static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
1408 struct inode *inode)
1410 spin_lock(&sbi->stat_lock);
1412 f2fs_bug_on(sbi, !sbi->total_valid_block_count);
1413 f2fs_bug_on(sbi, !sbi->total_valid_node_count);
1414 f2fs_bug_on(sbi, !inode->i_blocks);
1416 f2fs_i_blocks_write(inode, 1, false);
1417 sbi->total_valid_node_count--;
1418 sbi->total_valid_block_count--;
1420 spin_unlock(&sbi->stat_lock);
1423 static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
1425 return sbi->total_valid_node_count;
1428 static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
1430 percpu_counter_inc(&sbi->total_valid_inode_count);
1433 static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
1435 percpu_counter_dec(&sbi->total_valid_inode_count);
1438 static inline s64 valid_inode_count(struct f2fs_sb_info *sbi)
1440 return percpu_counter_sum_positive(&sbi->total_valid_inode_count);
1443 static inline struct page *f2fs_grab_cache_page(struct address_space *mapping,
1444 pgoff_t index, bool for_write)
1446 #ifdef CONFIG_F2FS_FAULT_INJECTION
1447 struct page *page = find_lock_page(mapping, index);
1451 if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_ALLOC))
1455 return grab_cache_page(mapping, index);
1456 return grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS);
1459 static inline void f2fs_copy_page(struct page *src, struct page *dst)
1461 char *src_kaddr = kmap(src);
1462 char *dst_kaddr = kmap(dst);
1464 memcpy(dst_kaddr, src_kaddr, PAGE_SIZE);
1469 static inline void f2fs_put_page(struct page *page, int unlock)
1475 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
1481 static inline void f2fs_put_dnode(struct dnode_of_data *dn)
1484 f2fs_put_page(dn->node_page, 1);
1485 if (dn->inode_page && dn->node_page != dn->inode_page)
1486 f2fs_put_page(dn->inode_page, 0);
1487 dn->node_page = NULL;
1488 dn->inode_page = NULL;
1491 static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
1494 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
1497 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
1502 entry = kmem_cache_alloc(cachep, flags);
1504 entry = kmem_cache_alloc(cachep, flags | __GFP_NOFAIL);
1508 static inline struct bio *f2fs_bio_alloc(int npages)
1512 /* No failure on bio allocation */
1513 bio = bio_alloc(GFP_NOIO, npages);
1515 bio = bio_alloc(GFP_NOIO | __GFP_NOFAIL, npages);
1519 static inline void f2fs_radix_tree_insert(struct radix_tree_root *root,
1520 unsigned long index, void *item)
1522 while (radix_tree_insert(root, index, item))
1526 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1528 static inline bool IS_INODE(struct page *page)
1530 struct f2fs_node *p = F2FS_NODE(page);
1531 return RAW_IS_INODE(p);
1534 static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
1536 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
1539 static inline block_t datablock_addr(struct page *node_page,
1540 unsigned int offset)
1542 struct f2fs_node *raw_node;
1544 raw_node = F2FS_NODE(node_page);
1545 addr_array = blkaddr_in_node(raw_node);
1546 return le32_to_cpu(addr_array[offset]);
1549 static inline int f2fs_test_bit(unsigned int nr, char *addr)
1554 mask = 1 << (7 - (nr & 0x07));
1555 return mask & *addr;
1558 static inline void f2fs_set_bit(unsigned int nr, char *addr)
1563 mask = 1 << (7 - (nr & 0x07));
1567 static inline void f2fs_clear_bit(unsigned int nr, char *addr)
1572 mask = 1 << (7 - (nr & 0x07));
1576 static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
1582 mask = 1 << (7 - (nr & 0x07));
1588 static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
1594 mask = 1 << (7 - (nr & 0x07));
1600 static inline void f2fs_change_bit(unsigned int nr, char *addr)
1605 mask = 1 << (7 - (nr & 0x07));
1609 /* used for f2fs_inode_info->flags */
1611 FI_NEW_INODE, /* indicate newly allocated inode */
1612 FI_DIRTY_INODE, /* indicate inode is dirty or not */
1613 FI_AUTO_RECOVER, /* indicate inode is recoverable */
1614 FI_DIRTY_DIR, /* indicate directory has dirty pages */
1615 FI_INC_LINK, /* need to increment i_nlink */
1616 FI_ACL_MODE, /* indicate acl mode */
1617 FI_NO_ALLOC, /* should not allocate any blocks */
1618 FI_FREE_NID, /* free allocated nide */
1619 FI_NO_EXTENT, /* not to use the extent cache */
1620 FI_INLINE_XATTR, /* used for inline xattr */
1621 FI_INLINE_DATA, /* used for inline data*/
1622 FI_INLINE_DENTRY, /* used for inline dentry */
1623 FI_APPEND_WRITE, /* inode has appended data */
1624 FI_UPDATE_WRITE, /* inode has in-place-update data */
1625 FI_NEED_IPU, /* used for ipu per file */
1626 FI_ATOMIC_FILE, /* indicate atomic file */
1627 FI_VOLATILE_FILE, /* indicate volatile file */
1628 FI_FIRST_BLOCK_WRITTEN, /* indicate #0 data block was written */
1629 FI_DROP_CACHE, /* drop dirty page cache */
1630 FI_DATA_EXIST, /* indicate data exists */
1631 FI_INLINE_DOTS, /* indicate inline dot dentries */
1632 FI_DO_DEFRAG, /* indicate defragment is running */
1633 FI_DIRTY_FILE, /* indicate regular/symlink has dirty pages */
1636 static inline void __mark_inode_dirty_flag(struct inode *inode,
1640 case FI_INLINE_XATTR:
1641 case FI_INLINE_DATA:
1642 case FI_INLINE_DENTRY:
1646 case FI_INLINE_DOTS:
1647 f2fs_mark_inode_dirty_sync(inode, true);
1651 static inline void set_inode_flag(struct inode *inode, int flag)
1653 if (!test_bit(flag, &F2FS_I(inode)->flags))
1654 set_bit(flag, &F2FS_I(inode)->flags);
1655 __mark_inode_dirty_flag(inode, flag, true);
1658 static inline int is_inode_flag_set(struct inode *inode, int flag)
1660 return test_bit(flag, &F2FS_I(inode)->flags);
1663 static inline void clear_inode_flag(struct inode *inode, int flag)
1665 if (test_bit(flag, &F2FS_I(inode)->flags))
1666 clear_bit(flag, &F2FS_I(inode)->flags);
1667 __mark_inode_dirty_flag(inode, flag, false);
1670 static inline void set_acl_inode(struct inode *inode, umode_t mode)
1672 F2FS_I(inode)->i_acl_mode = mode;
1673 set_inode_flag(inode, FI_ACL_MODE);
1674 f2fs_mark_inode_dirty_sync(inode, false);
1677 static inline void f2fs_i_links_write(struct inode *inode, bool inc)
1683 f2fs_mark_inode_dirty_sync(inode, true);
1686 static inline void f2fs_i_blocks_write(struct inode *inode,
1687 blkcnt_t diff, bool add)
1689 bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
1690 bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);
1692 inode->i_blocks = add ? inode->i_blocks + diff :
1693 inode->i_blocks - diff;
1694 f2fs_mark_inode_dirty_sync(inode, true);
1695 if (clean || recover)
1696 set_inode_flag(inode, FI_AUTO_RECOVER);
1699 static inline void f2fs_i_size_write(struct inode *inode, loff_t i_size)
1701 bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
1702 bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);
1704 if (i_size_read(inode) == i_size)
1707 i_size_write(inode, i_size);
1708 f2fs_mark_inode_dirty_sync(inode, true);
1709 if (clean || recover)
1710 set_inode_flag(inode, FI_AUTO_RECOVER);
1713 static inline void f2fs_i_depth_write(struct inode *inode, unsigned int depth)
1715 F2FS_I(inode)->i_current_depth = depth;
1716 f2fs_mark_inode_dirty_sync(inode, true);
1719 static inline void f2fs_i_xnid_write(struct inode *inode, nid_t xnid)
1721 F2FS_I(inode)->i_xattr_nid = xnid;
1722 f2fs_mark_inode_dirty_sync(inode, true);
1725 static inline void f2fs_i_pino_write(struct inode *inode, nid_t pino)
1727 F2FS_I(inode)->i_pino = pino;
1728 f2fs_mark_inode_dirty_sync(inode, true);
1731 static inline void get_inline_info(struct inode *inode, struct f2fs_inode *ri)
1733 struct f2fs_inode_info *fi = F2FS_I(inode);
1735 if (ri->i_inline & F2FS_INLINE_XATTR)
1736 set_bit(FI_INLINE_XATTR, &fi->flags);
1737 if (ri->i_inline & F2FS_INLINE_DATA)
1738 set_bit(FI_INLINE_DATA, &fi->flags);
1739 if (ri->i_inline & F2FS_INLINE_DENTRY)
1740 set_bit(FI_INLINE_DENTRY, &fi->flags);
1741 if (ri->i_inline & F2FS_DATA_EXIST)
1742 set_bit(FI_DATA_EXIST, &fi->flags);
1743 if (ri->i_inline & F2FS_INLINE_DOTS)
1744 set_bit(FI_INLINE_DOTS, &fi->flags);
1747 static inline void set_raw_inline(struct inode *inode, struct f2fs_inode *ri)
1751 if (is_inode_flag_set(inode, FI_INLINE_XATTR))
1752 ri->i_inline |= F2FS_INLINE_XATTR;
1753 if (is_inode_flag_set(inode, FI_INLINE_DATA))
1754 ri->i_inline |= F2FS_INLINE_DATA;
1755 if (is_inode_flag_set(inode, FI_INLINE_DENTRY))
1756 ri->i_inline |= F2FS_INLINE_DENTRY;
1757 if (is_inode_flag_set(inode, FI_DATA_EXIST))
1758 ri->i_inline |= F2FS_DATA_EXIST;
1759 if (is_inode_flag_set(inode, FI_INLINE_DOTS))
1760 ri->i_inline |= F2FS_INLINE_DOTS;
1763 static inline int f2fs_has_inline_xattr(struct inode *inode)
1765 return is_inode_flag_set(inode, FI_INLINE_XATTR);
1768 static inline unsigned int addrs_per_inode(struct inode *inode)
1770 if (f2fs_has_inline_xattr(inode))
1771 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
1772 return DEF_ADDRS_PER_INODE;
1775 static inline void *inline_xattr_addr(struct page *page)
1777 struct f2fs_inode *ri = F2FS_INODE(page);
1778 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
1779 F2FS_INLINE_XATTR_ADDRS]);
1782 static inline int inline_xattr_size(struct inode *inode)
1784 if (f2fs_has_inline_xattr(inode))
1785 return F2FS_INLINE_XATTR_ADDRS << 2;
1790 static inline int f2fs_has_inline_data(struct inode *inode)
1792 return is_inode_flag_set(inode, FI_INLINE_DATA);
1795 static inline void f2fs_clear_inline_inode(struct inode *inode)
1797 clear_inode_flag(inode, FI_INLINE_DATA);
1798 clear_inode_flag(inode, FI_DATA_EXIST);
1801 static inline int f2fs_exist_data(struct inode *inode)
1803 return is_inode_flag_set(inode, FI_DATA_EXIST);
1806 static inline int f2fs_has_inline_dots(struct inode *inode)
1808 return is_inode_flag_set(inode, FI_INLINE_DOTS);
1811 static inline bool f2fs_is_atomic_file(struct inode *inode)
1813 return is_inode_flag_set(inode, FI_ATOMIC_FILE);
1816 static inline bool f2fs_is_volatile_file(struct inode *inode)
1818 return is_inode_flag_set(inode, FI_VOLATILE_FILE);
1821 static inline bool f2fs_is_first_block_written(struct inode *inode)
1823 return is_inode_flag_set(inode, FI_FIRST_BLOCK_WRITTEN);
1826 static inline bool f2fs_is_drop_cache(struct inode *inode)
1828 return is_inode_flag_set(inode, FI_DROP_CACHE);
1831 static inline void *inline_data_addr(struct page *page)
1833 struct f2fs_inode *ri = F2FS_INODE(page);
1834 return (void *)&(ri->i_addr[1]);
1837 static inline int f2fs_has_inline_dentry(struct inode *inode)
1839 return is_inode_flag_set(inode, FI_INLINE_DENTRY);
1842 static inline void f2fs_dentry_kunmap(struct inode *dir, struct page *page)
1844 if (!f2fs_has_inline_dentry(dir))
1848 static inline int is_file(struct inode *inode, int type)
1850 return F2FS_I(inode)->i_advise & type;
1853 static inline void set_file(struct inode *inode, int type)
1855 F2FS_I(inode)->i_advise |= type;
1856 f2fs_mark_inode_dirty_sync(inode, true);
1859 static inline void clear_file(struct inode *inode, int type)
1861 F2FS_I(inode)->i_advise &= ~type;
1862 f2fs_mark_inode_dirty_sync(inode, true);
1865 static inline bool f2fs_skip_inode_update(struct inode *inode, int dsync)
1868 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1871 spin_lock(&sbi->inode_lock[DIRTY_META]);
1872 ret = list_empty(&F2FS_I(inode)->gdirty_list);
1873 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1876 if (!is_inode_flag_set(inode, FI_AUTO_RECOVER) ||
1877 file_keep_isize(inode) ||
1878 i_size_read(inode) & PAGE_MASK)
1880 return F2FS_I(inode)->last_disk_size == i_size_read(inode);
1883 static inline int f2fs_readonly(struct super_block *sb)
1885 return sb->s_flags & MS_RDONLY;
1888 static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
1890 return is_set_ckpt_flags(sbi, CP_ERROR_FLAG);
1893 static inline bool is_dot_dotdot(const struct qstr *str)
1895 if (str->len == 1 && str->name[0] == '.')
1898 if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.')
1904 static inline bool f2fs_may_extent_tree(struct inode *inode)
1906 if (!test_opt(F2FS_I_SB(inode), EXTENT_CACHE) ||
1907 is_inode_flag_set(inode, FI_NO_EXTENT))
1910 return S_ISREG(inode->i_mode);
1913 static inline void *f2fs_kmalloc(struct f2fs_sb_info *sbi,
1914 size_t size, gfp_t flags)
1916 #ifdef CONFIG_F2FS_FAULT_INJECTION
1917 if (time_to_inject(sbi, FAULT_KMALLOC))
1920 return kmalloc(size, flags);
1923 static inline void *f2fs_kvmalloc(size_t size, gfp_t flags)
1927 ret = kmalloc(size, flags | __GFP_NOWARN);
1929 ret = __vmalloc(size, flags, PAGE_KERNEL);
1933 static inline void *f2fs_kvzalloc(size_t size, gfp_t flags)
1937 ret = kzalloc(size, flags | __GFP_NOWARN);
1939 ret = __vmalloc(size, flags | __GFP_ZERO, PAGE_KERNEL);
1943 #define get_inode_mode(i) \
1944 ((is_inode_flag_set(i, FI_ACL_MODE)) ? \
1945 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1947 /* get offset of first page in next direct node */
1948 #define PGOFS_OF_NEXT_DNODE(pgofs, inode) \
1949 ((pgofs < ADDRS_PER_INODE(inode)) ? ADDRS_PER_INODE(inode) : \
1950 (pgofs - ADDRS_PER_INODE(inode) + ADDRS_PER_BLOCK) / \
1951 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(inode))
1956 int f2fs_sync_file(struct file *, loff_t, loff_t, int);
1957 void truncate_data_blocks(struct dnode_of_data *);
1958 int truncate_blocks(struct inode *, u64, bool);
1959 int f2fs_truncate(struct inode *);
1960 int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
1961 int f2fs_setattr(struct dentry *, struct iattr *);
1962 int truncate_hole(struct inode *, pgoff_t, pgoff_t);
1963 int truncate_data_blocks_range(struct dnode_of_data *, int);
1964 long f2fs_ioctl(struct file *, unsigned int, unsigned long);
1965 long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long);
1970 void f2fs_set_inode_flags(struct inode *);
1971 struct inode *f2fs_iget(struct super_block *, unsigned long);
1972 struct inode *f2fs_iget_retry(struct super_block *, unsigned long);
1973 int try_to_free_nats(struct f2fs_sb_info *, int);
1974 int update_inode(struct inode *, struct page *);
1975 int update_inode_page(struct inode *);
1976 int f2fs_write_inode(struct inode *, struct writeback_control *);
1977 void f2fs_evict_inode(struct inode *);
1978 void handle_failed_inode(struct inode *);
1983 struct dentry *f2fs_get_parent(struct dentry *child);
1988 void set_de_type(struct f2fs_dir_entry *, umode_t);
1989 unsigned char get_de_type(struct f2fs_dir_entry *);
1990 struct f2fs_dir_entry *find_target_dentry(struct fscrypt_name *,
1991 f2fs_hash_t, int *, struct f2fs_dentry_ptr *);
1992 int f2fs_fill_dentries(struct dir_context *, struct f2fs_dentry_ptr *,
1993 unsigned int, struct fscrypt_str *);
1994 void do_make_empty_dir(struct inode *, struct inode *,
1995 struct f2fs_dentry_ptr *);
1996 struct page *init_inode_metadata(struct inode *, struct inode *,
1997 const struct qstr *, const struct qstr *, struct page *);
1998 void update_parent_metadata(struct inode *, struct inode *, unsigned int);
1999 int room_for_filename(const void *, int, int);
2000 void f2fs_drop_nlink(struct inode *, struct inode *);
2001 struct f2fs_dir_entry *__f2fs_find_entry(struct inode *, struct fscrypt_name *,
2003 struct f2fs_dir_entry *f2fs_find_entry(struct inode *, const struct qstr *,
2005 struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
2006 ino_t f2fs_inode_by_name(struct inode *, const struct qstr *, struct page **);
2007 void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
2008 struct page *, struct inode *);
2009 int update_dent_inode(struct inode *, struct inode *, const struct qstr *);
2010 void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *,
2011 const struct qstr *, f2fs_hash_t , unsigned int);
2012 int f2fs_add_regular_entry(struct inode *, const struct qstr *,
2013 const struct qstr *, struct inode *, nid_t, umode_t);
2014 int __f2fs_do_add_link(struct inode *, struct fscrypt_name*, struct inode *,
2016 int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *, nid_t,
2018 void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *,
2020 int f2fs_do_tmpfile(struct inode *, struct inode *);
2021 bool f2fs_empty_dir(struct inode *);
2023 static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
2025 return __f2fs_add_link(d_inode(dentry->d_parent), &dentry->d_name,
2026 inode, inode->i_ino, inode->i_mode);
2032 int f2fs_inode_dirtied(struct inode *, bool);
2033 void f2fs_inode_synced(struct inode *);
2034 int f2fs_commit_super(struct f2fs_sb_info *, bool);
2035 int f2fs_sync_fs(struct super_block *, int);
2036 extern __printf(3, 4)
2037 void f2fs_msg(struct super_block *, const char *, const char *, ...);
2038 int sanity_check_ckpt(struct f2fs_sb_info *sbi);
2043 f2fs_hash_t f2fs_dentry_hash(const struct qstr *);
2048 struct dnode_of_data;
2051 bool available_free_memory(struct f2fs_sb_info *, int);
2052 int need_dentry_mark(struct f2fs_sb_info *, nid_t);
2053 bool is_checkpointed_node(struct f2fs_sb_info *, nid_t);
2054 bool need_inode_block_update(struct f2fs_sb_info *, nid_t);
2055 void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
2056 pgoff_t get_next_page_offset(struct dnode_of_data *, pgoff_t);
2057 int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);
2058 int truncate_inode_blocks(struct inode *, pgoff_t);
2059 int truncate_xattr_node(struct inode *, struct page *);
2060 int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t);
2061 int remove_inode_page(struct inode *);
2062 struct page *new_inode_page(struct inode *);
2063 struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *);
2064 void ra_node_page(struct f2fs_sb_info *, nid_t);
2065 struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
2066 struct page *get_node_page_ra(struct page *, int);
2067 void move_node_page(struct page *, int);
2068 int fsync_node_pages(struct f2fs_sb_info *, struct inode *,
2069 struct writeback_control *, bool);
2070 int sync_node_pages(struct f2fs_sb_info *, struct writeback_control *);
2071 void build_free_nids(struct f2fs_sb_info *, bool);
2072 bool alloc_nid(struct f2fs_sb_info *, nid_t *);
2073 void alloc_nid_done(struct f2fs_sb_info *, nid_t);
2074 void alloc_nid_failed(struct f2fs_sb_info *, nid_t);
2075 int try_to_free_nids(struct f2fs_sb_info *, int);
2076 void recover_inline_xattr(struct inode *, struct page *);
2077 void recover_xattr_data(struct inode *, struct page *, block_t);
2078 int recover_inode_page(struct f2fs_sb_info *, struct page *);
2079 int restore_node_summary(struct f2fs_sb_info *, unsigned int,
2080 struct f2fs_summary_block *);
2081 void flush_nat_entries(struct f2fs_sb_info *);
2082 int build_node_manager(struct f2fs_sb_info *);
2083 void destroy_node_manager(struct f2fs_sb_info *);
2084 int __init create_node_manager_caches(void);
2085 void destroy_node_manager_caches(void);
2090 void register_inmem_page(struct inode *, struct page *);
2091 void drop_inmem_pages(struct inode *);
2092 int commit_inmem_pages(struct inode *);
2093 void f2fs_balance_fs(struct f2fs_sb_info *, bool);
2094 void f2fs_balance_fs_bg(struct f2fs_sb_info *);
2095 int f2fs_issue_flush(struct f2fs_sb_info *);
2096 int create_flush_cmd_control(struct f2fs_sb_info *);
2097 void destroy_flush_cmd_control(struct f2fs_sb_info *, bool);
2098 void invalidate_blocks(struct f2fs_sb_info *, block_t);
2099 bool is_checkpointed_data(struct f2fs_sb_info *, block_t);
2100 void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t);
2101 void f2fs_wait_all_discard_bio(struct f2fs_sb_info *);
2102 void clear_prefree_segments(struct f2fs_sb_info *, struct cp_control *);
2103 void release_discard_addrs(struct f2fs_sb_info *);
2104 int npages_for_summary_flush(struct f2fs_sb_info *, bool);
2105 void allocate_new_segments(struct f2fs_sb_info *);
2106 int f2fs_trim_fs(struct f2fs_sb_info *, struct fstrim_range *);
2107 struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
2108 void update_meta_page(struct f2fs_sb_info *, void *, block_t);
2109 void write_meta_page(struct f2fs_sb_info *, struct page *);
2110 void write_node_page(unsigned int, struct f2fs_io_info *);
2111 void write_data_page(struct dnode_of_data *, struct f2fs_io_info *);
2112 void rewrite_data_page(struct f2fs_io_info *);
2113 void __f2fs_replace_block(struct f2fs_sb_info *, struct f2fs_summary *,
2114 block_t, block_t, bool, bool);
2115 void f2fs_replace_block(struct f2fs_sb_info *, struct dnode_of_data *,
2116 block_t, block_t, unsigned char, bool, bool);
2117 void allocate_data_block(struct f2fs_sb_info *, struct page *,
2118 block_t, block_t *, struct f2fs_summary *, int);
2119 void f2fs_wait_on_page_writeback(struct page *, enum page_type, bool);
2120 void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info *, block_t);
2121 void write_data_summaries(struct f2fs_sb_info *, block_t);
2122 void write_node_summaries(struct f2fs_sb_info *, block_t);
2123 int lookup_journal_in_cursum(struct f2fs_journal *, int, unsigned int, int);
2124 void flush_sit_entries(struct f2fs_sb_info *, struct cp_control *);
2125 int build_segment_manager(struct f2fs_sb_info *);
2126 void destroy_segment_manager(struct f2fs_sb_info *);
2127 int __init create_segment_manager_caches(void);
2128 void destroy_segment_manager_caches(void);
2133 void f2fs_stop_checkpoint(struct f2fs_sb_info *, bool);
2134 struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
2135 struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
2136 struct page *get_tmp_page(struct f2fs_sb_info *, pgoff_t);
2137 bool is_valid_blkaddr(struct f2fs_sb_info *, block_t, int);
2138 int ra_meta_pages(struct f2fs_sb_info *, block_t, int, int, bool);
2139 void ra_meta_pages_cond(struct f2fs_sb_info *, pgoff_t);
2140 long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
2141 void add_ino_entry(struct f2fs_sb_info *, nid_t, int type);
2142 void remove_ino_entry(struct f2fs_sb_info *, nid_t, int type);
2143 void release_ino_entry(struct f2fs_sb_info *, bool);
2144 bool exist_written_data(struct f2fs_sb_info *, nid_t, int);
2145 int f2fs_sync_inode_meta(struct f2fs_sb_info *);
2146 int acquire_orphan_inode(struct f2fs_sb_info *);
2147 void release_orphan_inode(struct f2fs_sb_info *);
2148 void add_orphan_inode(struct inode *);
2149 void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
2150 int recover_orphan_inodes(struct f2fs_sb_info *);
2151 int get_valid_checkpoint(struct f2fs_sb_info *);
2152 void update_dirty_page(struct inode *, struct page *);
2153 void remove_dirty_inode(struct inode *);
2154 int sync_dirty_inodes(struct f2fs_sb_info *, enum inode_type);
2155 int write_checkpoint(struct f2fs_sb_info *, struct cp_control *);
2156 void init_ino_entry_info(struct f2fs_sb_info *);
2157 int __init create_checkpoint_caches(void);
2158 void destroy_checkpoint_caches(void);
2163 void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int);
2164 void f2fs_submit_merged_bio_cond(struct f2fs_sb_info *, struct inode *,
2165 struct page *, nid_t, enum page_type, int);
2166 void f2fs_flush_merged_bios(struct f2fs_sb_info *);
2167 int f2fs_submit_page_bio(struct f2fs_io_info *);
2168 void f2fs_submit_page_mbio(struct f2fs_io_info *);
2169 struct block_device *f2fs_target_device(struct f2fs_sb_info *,
2170 block_t, struct bio *);
2171 int f2fs_target_device_index(struct f2fs_sb_info *, block_t);
2172 void set_data_blkaddr(struct dnode_of_data *);
2173 void f2fs_update_data_blkaddr(struct dnode_of_data *, block_t);
2174 int reserve_new_blocks(struct dnode_of_data *, blkcnt_t);
2175 int reserve_new_block(struct dnode_of_data *);
2176 int f2fs_get_block(struct dnode_of_data *, pgoff_t);
2177 int f2fs_preallocate_blocks(struct kiocb *, struct iov_iter *);
2178 int f2fs_reserve_block(struct dnode_of_data *, pgoff_t);
2179 struct page *get_read_data_page(struct inode *, pgoff_t, int, bool);
2180 struct page *find_data_page(struct inode *, pgoff_t);
2181 struct page *get_lock_data_page(struct inode *, pgoff_t, bool);
2182 struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
2183 int do_write_data_page(struct f2fs_io_info *);
2184 int f2fs_map_blocks(struct inode *, struct f2fs_map_blocks *, int, int);
2185 int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64);
2186 void f2fs_set_page_dirty_nobuffers(struct page *);
2187 void f2fs_invalidate_page(struct page *, unsigned int, unsigned int);
2188 int f2fs_release_page(struct page *, gfp_t);
2189 #ifdef CONFIG_MIGRATION
2190 int f2fs_migrate_page(struct address_space *, struct page *, struct page *,
2197 int start_gc_thread(struct f2fs_sb_info *);
2198 void stop_gc_thread(struct f2fs_sb_info *);
2199 block_t start_bidx_of_node(unsigned int, struct inode *);
2200 int f2fs_gc(struct f2fs_sb_info *, bool, bool);
2201 void build_gc_manager(struct f2fs_sb_info *);
2206 int recover_fsync_data(struct f2fs_sb_info *, bool);
2207 bool space_for_roll_forward(struct f2fs_sb_info *);
2212 #ifdef CONFIG_F2FS_STAT_FS
2213 struct f2fs_stat_info {
2214 struct list_head stat_list;
2215 struct f2fs_sb_info *sbi;
2216 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
2217 int main_area_segs, main_area_sections, main_area_zones;
2218 unsigned long long hit_largest, hit_cached, hit_rbtree;
2219 unsigned long long hit_total, total_ext;
2220 int ext_tree, zombie_tree, ext_node;
2221 int ndirty_node, ndirty_dent, ndirty_meta, ndirty_data, ndirty_imeta;
2223 unsigned int ndirty_dirs, ndirty_files, ndirty_all;
2224 int nats, dirty_nats, sits, dirty_sits, free_nids, alloc_nids;
2225 int total_count, utilization;
2226 int bg_gc, nr_wb_cp_data, nr_wb_data;
2227 int inline_xattr, inline_inode, inline_dir, orphans;
2228 unsigned int valid_count, valid_node_count, valid_inode_count, discard_blks;
2229 unsigned int bimodal, avg_vblocks;
2230 int util_free, util_valid, util_invalid;
2231 int rsvd_segs, overp_segs;
2232 int dirty_count, node_pages, meta_pages;
2233 int prefree_count, call_count, cp_count, bg_cp_count;
2234 int tot_segs, node_segs, data_segs, free_segs, free_secs;
2235 int bg_node_segs, bg_data_segs;
2236 int tot_blks, data_blks, node_blks;
2237 int bg_data_blks, bg_node_blks;
2238 int curseg[NR_CURSEG_TYPE];
2239 int cursec[NR_CURSEG_TYPE];
2240 int curzone[NR_CURSEG_TYPE];
2242 unsigned int segment_count[2];
2243 unsigned int block_count[2];
2244 unsigned int inplace_count;
2245 unsigned long long base_mem, cache_mem, page_mem;
2248 static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
2250 return (struct f2fs_stat_info *)sbi->stat_info;
2253 #define stat_inc_cp_count(si) ((si)->cp_count++)
2254 #define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++)
2255 #define stat_inc_call_count(si) ((si)->call_count++)
2256 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
2257 #define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++)
2258 #define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--)
2259 #define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext))
2260 #define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree))
2261 #define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest))
2262 #define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached))
2263 #define stat_inc_inline_xattr(inode) \
2265 if (f2fs_has_inline_xattr(inode)) \
2266 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
2268 #define stat_dec_inline_xattr(inode) \
2270 if (f2fs_has_inline_xattr(inode)) \
2271 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
2273 #define stat_inc_inline_inode(inode) \
2275 if (f2fs_has_inline_data(inode)) \
2276 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
2278 #define stat_dec_inline_inode(inode) \
2280 if (f2fs_has_inline_data(inode)) \
2281 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
2283 #define stat_inc_inline_dir(inode) \
2285 if (f2fs_has_inline_dentry(inode)) \
2286 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
2288 #define stat_dec_inline_dir(inode) \
2290 if (f2fs_has_inline_dentry(inode)) \
2291 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
2293 #define stat_inc_seg_type(sbi, curseg) \
2294 ((sbi)->segment_count[(curseg)->alloc_type]++)
2295 #define stat_inc_block_count(sbi, curseg) \
2296 ((sbi)->block_count[(curseg)->alloc_type]++)
2297 #define stat_inc_inplace_blocks(sbi) \
2298 (atomic_inc(&(sbi)->inplace_count))
2299 #define stat_inc_seg_count(sbi, type, gc_type) \
2301 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2303 if (type == SUM_TYPE_DATA) { \
2305 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
2308 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
2312 #define stat_inc_tot_blk_count(si, blks) \
2313 (si->tot_blks += (blks))
2315 #define stat_inc_data_blk_count(sbi, blks, gc_type) \
2317 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2318 stat_inc_tot_blk_count(si, blks); \
2319 si->data_blks += (blks); \
2320 si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \
2323 #define stat_inc_node_blk_count(sbi, blks, gc_type) \
2325 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2326 stat_inc_tot_blk_count(si, blks); \
2327 si->node_blks += (blks); \
2328 si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \
2331 int f2fs_build_stats(struct f2fs_sb_info *);
2332 void f2fs_destroy_stats(struct f2fs_sb_info *);
2333 int __init f2fs_create_root_stats(void);
2334 void f2fs_destroy_root_stats(void);
2336 #define stat_inc_cp_count(si)
2337 #define stat_inc_bg_cp_count(si)
2338 #define stat_inc_call_count(si)
2339 #define stat_inc_bggc_count(si)
2340 #define stat_inc_dirty_inode(sbi, type)
2341 #define stat_dec_dirty_inode(sbi, type)
2342 #define stat_inc_total_hit(sb)
2343 #define stat_inc_rbtree_node_hit(sb)
2344 #define stat_inc_largest_node_hit(sbi)
2345 #define stat_inc_cached_node_hit(sbi)
2346 #define stat_inc_inline_xattr(inode)
2347 #define stat_dec_inline_xattr(inode)
2348 #define stat_inc_inline_inode(inode)
2349 #define stat_dec_inline_inode(inode)
2350 #define stat_inc_inline_dir(inode)
2351 #define stat_dec_inline_dir(inode)
2352 #define stat_inc_seg_type(sbi, curseg)
2353 #define stat_inc_block_count(sbi, curseg)
2354 #define stat_inc_inplace_blocks(sbi)
2355 #define stat_inc_seg_count(sbi, type, gc_type)
2356 #define stat_inc_tot_blk_count(si, blks)
2357 #define stat_inc_data_blk_count(sbi, blks, gc_type)
2358 #define stat_inc_node_blk_count(sbi, blks, gc_type)
2360 static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
2361 static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
2362 static inline int __init f2fs_create_root_stats(void) { return 0; }
2363 static inline void f2fs_destroy_root_stats(void) { }
2366 extern const struct file_operations f2fs_dir_operations;
2367 extern const struct file_operations f2fs_file_operations;
2368 extern const struct inode_operations f2fs_file_inode_operations;
2369 extern const struct address_space_operations f2fs_dblock_aops;
2370 extern const struct address_space_operations f2fs_node_aops;
2371 extern const struct address_space_operations f2fs_meta_aops;
2372 extern const struct inode_operations f2fs_dir_inode_operations;
2373 extern const struct inode_operations f2fs_symlink_inode_operations;
2374 extern const struct inode_operations f2fs_encrypted_symlink_inode_operations;
2375 extern const struct inode_operations f2fs_special_inode_operations;
2376 extern struct kmem_cache *inode_entry_slab;
2381 bool f2fs_may_inline_data(struct inode *);
2382 bool f2fs_may_inline_dentry(struct inode *);
2383 void read_inline_data(struct page *, struct page *);
2384 bool truncate_inline_inode(struct page *, u64);
2385 int f2fs_read_inline_data(struct inode *, struct page *);
2386 int f2fs_convert_inline_page(struct dnode_of_data *, struct page *);
2387 int f2fs_convert_inline_inode(struct inode *);
2388 int f2fs_write_inline_data(struct inode *, struct page *);
2389 bool recover_inline_data(struct inode *, struct page *);
2390 struct f2fs_dir_entry *find_in_inline_dir(struct inode *,
2391 struct fscrypt_name *, struct page **);
2392 int make_empty_inline_dir(struct inode *inode, struct inode *, struct page *);
2393 int f2fs_add_inline_entry(struct inode *, const struct qstr *,
2394 const struct qstr *, struct inode *, nid_t, umode_t);
2395 void f2fs_delete_inline_entry(struct f2fs_dir_entry *, struct page *,
2396 struct inode *, struct inode *);
2397 bool f2fs_empty_inline_dir(struct inode *);
2398 int f2fs_read_inline_dir(struct file *, struct dir_context *,
2399 struct fscrypt_str *);
2400 int f2fs_inline_data_fiemap(struct inode *,
2401 struct fiemap_extent_info *, __u64, __u64);
2406 unsigned long f2fs_shrink_count(struct shrinker *, struct shrink_control *);
2407 unsigned long f2fs_shrink_scan(struct shrinker *, struct shrink_control *);
2408 void f2fs_join_shrinker(struct f2fs_sb_info *);
2409 void f2fs_leave_shrinker(struct f2fs_sb_info *);
2414 unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *, int);
2415 bool f2fs_init_extent_tree(struct inode *, struct f2fs_extent *);
2416 void f2fs_drop_extent_tree(struct inode *);
2417 unsigned int f2fs_destroy_extent_node(struct inode *);
2418 void f2fs_destroy_extent_tree(struct inode *);
2419 bool f2fs_lookup_extent_cache(struct inode *, pgoff_t, struct extent_info *);
2420 void f2fs_update_extent_cache(struct dnode_of_data *);
2421 void f2fs_update_extent_cache_range(struct dnode_of_data *dn,
2422 pgoff_t, block_t, unsigned int);
2423 void init_extent_cache_info(struct f2fs_sb_info *);
2424 int __init create_extent_cache(void);
2425 void destroy_extent_cache(void);
2430 static inline bool f2fs_encrypted_inode(struct inode *inode)
2432 return file_is_encrypt(inode);
2435 static inline void f2fs_set_encrypted_inode(struct inode *inode)
2437 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2438 file_set_encrypt(inode);
2442 static inline bool f2fs_bio_encrypted(struct bio *bio)
2444 return bio->bi_private != NULL;
2447 static inline int f2fs_sb_has_crypto(struct super_block *sb)
2449 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_ENCRYPT);
2452 static inline int f2fs_sb_mounted_blkzoned(struct super_block *sb)
2454 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_BLKZONED);
2457 #ifdef CONFIG_BLK_DEV_ZONED
2458 static inline int get_blkz_type(struct f2fs_sb_info *sbi,
2459 struct block_device *bdev, block_t blkaddr)
2461 unsigned int zno = blkaddr >> sbi->log_blocks_per_blkz;
2464 for (i = 0; i < sbi->s_ndevs; i++)
2465 if (FDEV(i).bdev == bdev)
2466 return FDEV(i).blkz_type[zno];
2471 static inline bool f2fs_discard_en(struct f2fs_sb_info *sbi)
2473 struct request_queue *q = bdev_get_queue(sbi->sb->s_bdev);
2475 return blk_queue_discard(q) || f2fs_sb_mounted_blkzoned(sbi->sb);
2478 static inline void set_opt_mode(struct f2fs_sb_info *sbi, unsigned int mt)
2480 clear_opt(sbi, ADAPTIVE);
2481 clear_opt(sbi, LFS);
2484 case F2FS_MOUNT_ADAPTIVE:
2485 set_opt(sbi, ADAPTIVE);
2487 case F2FS_MOUNT_LFS:
2493 static inline bool f2fs_may_encrypt(struct inode *inode)
2495 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2496 umode_t mode = inode->i_mode;
2498 return (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode));
2504 #ifndef CONFIG_F2FS_FS_ENCRYPTION
2505 #define fscrypt_set_d_op(i)
2506 #define fscrypt_get_ctx fscrypt_notsupp_get_ctx
2507 #define fscrypt_release_ctx fscrypt_notsupp_release_ctx
2508 #define fscrypt_encrypt_page fscrypt_notsupp_encrypt_page
2509 #define fscrypt_decrypt_page fscrypt_notsupp_decrypt_page
2510 #define fscrypt_decrypt_bio_pages fscrypt_notsupp_decrypt_bio_pages
2511 #define fscrypt_pullback_bio_page fscrypt_notsupp_pullback_bio_page
2512 #define fscrypt_restore_control_page fscrypt_notsupp_restore_control_page
2513 #define fscrypt_zeroout_range fscrypt_notsupp_zeroout_range
2514 #define fscrypt_ioctl_set_policy fscrypt_notsupp_ioctl_set_policy
2515 #define fscrypt_ioctl_get_policy fscrypt_notsupp_ioctl_get_policy
2516 #define fscrypt_has_permitted_context fscrypt_notsupp_has_permitted_context
2517 #define fscrypt_inherit_context fscrypt_notsupp_inherit_context
2518 #define fscrypt_get_encryption_info fscrypt_notsupp_get_encryption_info
2519 #define fscrypt_put_encryption_info fscrypt_notsupp_put_encryption_info
2520 #define fscrypt_setup_filename fscrypt_notsupp_setup_filename
2521 #define fscrypt_free_filename fscrypt_notsupp_free_filename
2522 #define fscrypt_fname_encrypted_size fscrypt_notsupp_fname_encrypted_size
2523 #define fscrypt_fname_alloc_buffer fscrypt_notsupp_fname_alloc_buffer
2524 #define fscrypt_fname_free_buffer fscrypt_notsupp_fname_free_buffer
2525 #define fscrypt_fname_disk_to_usr fscrypt_notsupp_fname_disk_to_usr
2526 #define fscrypt_fname_usr_to_disk fscrypt_notsupp_fname_usr_to_disk