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
405 #define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
406 #define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
407 #define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
408 #define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
409 #define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
410 #define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
411 #define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
412 #define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
413 #define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
414 #define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
415 #define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
417 #define DEF_DIR_LEVEL 0
419 struct f2fs_inode_info {
420 struct inode vfs_inode; /* serve a vfs inode */
421 unsigned long i_flags; /* keep an inode flags for ioctl */
422 unsigned char i_advise; /* use to give file attribute hints */
423 unsigned char i_dir_level; /* use for dentry level for large dir */
424 unsigned int i_current_depth; /* use only in directory structure */
425 unsigned int i_pino; /* parent inode number */
426 umode_t i_acl_mode; /* keep file acl mode temporarily */
428 /* Use below internally in f2fs*/
429 unsigned long flags; /* use to pass per-file flags */
430 struct rw_semaphore i_sem; /* protect fi info */
431 struct percpu_counter dirty_pages; /* # of dirty pages */
432 f2fs_hash_t chash; /* hash value of given file name */
433 unsigned int clevel; /* maximum level of given file name */
434 nid_t i_xattr_nid; /* node id that contains xattrs */
435 unsigned long long xattr_ver; /* cp version of xattr modification */
436 loff_t last_disk_size; /* lastly written file size */
438 struct list_head dirty_list; /* dirty list for dirs and files */
439 struct list_head gdirty_list; /* linked in global dirty list */
440 struct list_head inmem_pages; /* inmemory pages managed by f2fs */
441 struct mutex inmem_lock; /* lock for inmemory pages */
442 struct extent_tree *extent_tree; /* cached extent_tree entry */
443 struct rw_semaphore dio_rwsem[2];/* avoid racing between dio and gc */
446 static inline void get_extent_info(struct extent_info *ext,
447 struct f2fs_extent *i_ext)
449 ext->fofs = le32_to_cpu(i_ext->fofs);
450 ext->blk = le32_to_cpu(i_ext->blk);
451 ext->len = le32_to_cpu(i_ext->len);
454 static inline void set_raw_extent(struct extent_info *ext,
455 struct f2fs_extent *i_ext)
457 i_ext->fofs = cpu_to_le32(ext->fofs);
458 i_ext->blk = cpu_to_le32(ext->blk);
459 i_ext->len = cpu_to_le32(ext->len);
462 static inline void set_extent_info(struct extent_info *ei, unsigned int fofs,
463 u32 blk, unsigned int len)
470 static inline bool __is_extent_same(struct extent_info *ei1,
471 struct extent_info *ei2)
473 return (ei1->fofs == ei2->fofs && ei1->blk == ei2->blk &&
474 ei1->len == ei2->len);
477 static inline bool __is_extent_mergeable(struct extent_info *back,
478 struct extent_info *front)
480 return (back->fofs + back->len == front->fofs &&
481 back->blk + back->len == front->blk);
484 static inline bool __is_back_mergeable(struct extent_info *cur,
485 struct extent_info *back)
487 return __is_extent_mergeable(back, cur);
490 static inline bool __is_front_mergeable(struct extent_info *cur,
491 struct extent_info *front)
493 return __is_extent_mergeable(cur, front);
496 extern void f2fs_mark_inode_dirty_sync(struct inode *, bool);
497 static inline void __try_update_largest_extent(struct inode *inode,
498 struct extent_tree *et, struct extent_node *en)
500 if (en->ei.len > et->largest.len) {
501 et->largest = en->ei;
502 f2fs_mark_inode_dirty_sync(inode, true);
512 struct f2fs_nm_info {
513 block_t nat_blkaddr; /* base disk address of NAT */
514 nid_t max_nid; /* maximum possible node ids */
515 nid_t available_nids; /* maximum available node ids */
516 nid_t next_scan_nid; /* the next nid to be scanned */
517 unsigned int ram_thresh; /* control the memory footprint */
518 unsigned int ra_nid_pages; /* # of nid pages to be readaheaded */
519 unsigned int dirty_nats_ratio; /* control dirty nats ratio threshold */
521 /* NAT cache management */
522 struct radix_tree_root nat_root;/* root of the nat entry cache */
523 struct radix_tree_root nat_set_root;/* root of the nat set cache */
524 struct rw_semaphore nat_tree_lock; /* protect nat_tree_lock */
525 struct list_head nat_entries; /* cached nat entry list (clean) */
526 unsigned int nat_cnt; /* the # of cached nat entries */
527 unsigned int dirty_nat_cnt; /* total num of nat entries in set */
529 /* free node ids management */
530 struct radix_tree_root free_nid_root;/* root of the free_nid cache */
531 struct list_head nid_list[MAX_NID_LIST];/* lists for free nids */
532 unsigned int nid_cnt[MAX_NID_LIST]; /* the number of free node id */
533 spinlock_t nid_list_lock; /* protect nid lists ops */
534 struct mutex build_lock; /* lock for build free nids */
537 char *nat_bitmap; /* NAT bitmap pointer */
538 int bitmap_size; /* bitmap size */
542 * this structure is used as one of function parameters.
543 * all the information are dedicated to a given direct node block determined
544 * by the data offset in a file.
546 struct dnode_of_data {
547 struct inode *inode; /* vfs inode pointer */
548 struct page *inode_page; /* its inode page, NULL is possible */
549 struct page *node_page; /* cached direct node page */
550 nid_t nid; /* node id of the direct node block */
551 unsigned int ofs_in_node; /* data offset in the node page */
552 bool inode_page_locked; /* inode page is locked or not */
553 bool node_changed; /* is node block changed */
554 char cur_level; /* level of hole node page */
555 char max_level; /* level of current page located */
556 block_t data_blkaddr; /* block address of the node block */
559 static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
560 struct page *ipage, struct page *npage, nid_t nid)
562 memset(dn, 0, sizeof(*dn));
564 dn->inode_page = ipage;
565 dn->node_page = npage;
572 * By default, there are 6 active log areas across the whole main area.
573 * When considering hot and cold data separation to reduce cleaning overhead,
574 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
576 * In the current design, you should not change the numbers intentionally.
577 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
578 * logs individually according to the underlying devices. (default: 6)
579 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
580 * data and 8 for node logs.
582 #define NR_CURSEG_DATA_TYPE (3)
583 #define NR_CURSEG_NODE_TYPE (3)
584 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
587 CURSEG_HOT_DATA = 0, /* directory entry blocks */
588 CURSEG_WARM_DATA, /* data blocks */
589 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
590 CURSEG_HOT_NODE, /* direct node blocks of directory files */
591 CURSEG_WARM_NODE, /* direct node blocks of normal files */
592 CURSEG_COLD_NODE, /* indirect node blocks */
594 CURSEG_DIRECT_IO, /* to use for the direct IO path */
598 struct completion wait;
599 struct llist_node llnode;
603 struct flush_cmd_control {
604 struct task_struct *f2fs_issue_flush; /* flush thread */
605 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
606 atomic_t submit_flush; /* # of issued flushes */
607 struct llist_head issue_list; /* list for command issue */
608 struct llist_node *dispatch_list; /* list for command dispatch */
611 struct f2fs_sm_info {
612 struct sit_info *sit_info; /* whole segment information */
613 struct free_segmap_info *free_info; /* free segment information */
614 struct dirty_seglist_info *dirty_info; /* dirty segment information */
615 struct curseg_info *curseg_array; /* active segment information */
617 block_t seg0_blkaddr; /* block address of 0'th segment */
618 block_t main_blkaddr; /* start block address of main area */
619 block_t ssa_blkaddr; /* start block address of SSA area */
621 unsigned int segment_count; /* total # of segments */
622 unsigned int main_segments; /* # of segments in main area */
623 unsigned int reserved_segments; /* # of reserved segments */
624 unsigned int ovp_segments; /* # of overprovision segments */
626 /* a threshold to reclaim prefree segments */
627 unsigned int rec_prefree_segments;
629 /* for small discard management */
630 struct list_head discard_list; /* 4KB discard list */
631 struct list_head wait_list; /* linked with issued discard bio */
632 int nr_discards; /* # of discards in the list */
633 int max_discards; /* max. discards to be issued */
635 /* for batched trimming */
636 unsigned int trim_sections; /* # of sections to trim */
638 struct list_head sit_entry_set; /* sit entry set list */
640 unsigned int ipu_policy; /* in-place-update policy */
641 unsigned int min_ipu_util; /* in-place-update threshold */
642 unsigned int min_fsync_blocks; /* threshold for fsync */
644 /* for flush command control */
645 struct flush_cmd_control *cmd_control_info;
653 * COUNT_TYPE for monitoring
655 * f2fs monitors the number of several block types such as on-writeback,
656 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
669 * The below are the page types of bios used in submit_bio().
670 * The available types are:
671 * DATA User data pages. It operates as async mode.
672 * NODE Node pages. It operates as async mode.
673 * META FS metadata pages such as SIT, NAT, CP.
674 * NR_PAGE_TYPE The number of page types.
675 * META_FLUSH Make sure the previous pages are written
676 * with waiting the bio's completion
677 * ... Only can be used with META.
679 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
686 INMEM, /* the below types are used by tracepoints only. */
693 struct f2fs_io_info {
694 struct f2fs_sb_info *sbi; /* f2fs_sb_info pointer */
695 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
696 int op; /* contains REQ_OP_ */
697 int op_flags; /* rq_flag_bits */
698 block_t new_blkaddr; /* new block address to be written */
699 block_t old_blkaddr; /* old block address before Cow */
700 struct page *page; /* page to be written */
701 struct page *encrypted_page; /* encrypted page */
704 #define is_read_io(rw) (rw == READ)
705 struct f2fs_bio_info {
706 struct f2fs_sb_info *sbi; /* f2fs superblock */
707 struct bio *bio; /* bios to merge */
708 sector_t last_block_in_bio; /* last block number */
709 struct f2fs_io_info fio; /* store buffered io info. */
710 struct rw_semaphore io_rwsem; /* blocking op for bio */
714 DIR_INODE, /* for dirty dir inode */
715 FILE_INODE, /* for dirty regular/symlink inode */
716 DIRTY_META, /* for all dirtied inode metadata */
720 /* for inner inode cache management */
721 struct inode_management {
722 struct radix_tree_root ino_root; /* ino entry array */
723 spinlock_t ino_lock; /* for ino entry lock */
724 struct list_head ino_list; /* inode list head */
725 unsigned long ino_num; /* number of entries */
728 /* For s_flag in struct f2fs_sb_info */
730 SBI_IS_DIRTY, /* dirty flag for checkpoint */
731 SBI_IS_CLOSE, /* specify unmounting */
732 SBI_NEED_FSCK, /* need fsck.f2fs to fix */
733 SBI_POR_DOING, /* recovery is doing or not */
734 SBI_NEED_SB_WRITE, /* need to recover superblock */
735 SBI_NEED_CP, /* need to checkpoint */
744 #ifdef CONFIG_F2FS_FS_ENCRYPTION
745 #define F2FS_KEY_DESC_PREFIX "f2fs:"
746 #define F2FS_KEY_DESC_PREFIX_SIZE 5
748 struct f2fs_sb_info {
749 struct super_block *sb; /* pointer to VFS super block */
750 struct proc_dir_entry *s_proc; /* proc entry */
751 struct f2fs_super_block *raw_super; /* raw super block pointer */
752 int valid_super_block; /* valid super block no */
753 unsigned long s_flag; /* flags for sbi */
755 #ifdef CONFIG_F2FS_FS_ENCRYPTION
756 u8 key_prefix[F2FS_KEY_DESC_PREFIX_SIZE];
759 /* for node-related operations */
760 struct f2fs_nm_info *nm_info; /* node manager */
761 struct inode *node_inode; /* cache node blocks */
763 /* for segment-related operations */
764 struct f2fs_sm_info *sm_info; /* segment manager */
766 /* for bio operations */
767 struct f2fs_bio_info read_io; /* for read bios */
768 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */
769 struct mutex wio_mutex[NODE + 1]; /* bio ordering for NODE/DATA */
772 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
773 spinlock_t cp_lock; /* for flag in ckpt */
774 struct inode *meta_inode; /* cache meta blocks */
775 struct mutex cp_mutex; /* checkpoint procedure lock */
776 struct rw_semaphore cp_rwsem; /* blocking FS operations */
777 struct rw_semaphore node_write; /* locking node writes */
778 wait_queue_head_t cp_wait;
779 unsigned long last_time[MAX_TIME]; /* to store time in jiffies */
780 long interval_time[MAX_TIME]; /* to store thresholds */
782 struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */
784 /* for orphan inode, use 0'th array */
785 unsigned int max_orphans; /* max orphan inodes */
787 /* for inode management */
788 struct list_head inode_list[NR_INODE_TYPE]; /* dirty inode list */
789 spinlock_t inode_lock[NR_INODE_TYPE]; /* for dirty inode list lock */
791 /* for extent tree cache */
792 struct radix_tree_root extent_tree_root;/* cache extent cache entries */
793 struct rw_semaphore extent_tree_lock; /* locking extent radix tree */
794 struct list_head extent_list; /* lru list for shrinker */
795 spinlock_t extent_lock; /* locking extent lru list */
796 atomic_t total_ext_tree; /* extent tree count */
797 struct list_head zombie_list; /* extent zombie tree list */
798 atomic_t total_zombie_tree; /* extent zombie tree count */
799 atomic_t total_ext_node; /* extent info count */
801 /* basic filesystem units */
802 unsigned int log_sectors_per_block; /* log2 sectors per block */
803 unsigned int log_blocksize; /* log2 block size */
804 unsigned int blocksize; /* block size */
805 unsigned int root_ino_num; /* root inode number*/
806 unsigned int node_ino_num; /* node inode number*/
807 unsigned int meta_ino_num; /* meta inode number*/
808 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
809 unsigned int blocks_per_seg; /* blocks per segment */
810 unsigned int segs_per_sec; /* segments per section */
811 unsigned int secs_per_zone; /* sections per zone */
812 unsigned int total_sections; /* total section count */
813 unsigned int total_node_count; /* total node block count */
814 unsigned int total_valid_node_count; /* valid node block count */
815 loff_t max_file_blocks; /* max block index of file */
816 int active_logs; /* # of active logs */
817 int dir_level; /* directory level */
819 block_t user_block_count; /* # of user blocks */
820 block_t total_valid_block_count; /* # of valid blocks */
821 block_t discard_blks; /* discard command candidats */
822 block_t last_valid_block_count; /* for recovery */
823 u32 s_next_generation; /* for NFS support */
824 atomic_t nr_wb_bios; /* # of writeback bios */
826 /* # of pages, see count_type */
827 atomic_t nr_pages[NR_COUNT_TYPE];
828 /* # of allocated blocks */
829 struct percpu_counter alloc_valid_block_count;
831 /* valid inode count */
832 struct percpu_counter total_valid_inode_count;
834 struct f2fs_mount_info mount_opt; /* mount options */
836 /* for cleaning operations */
837 struct mutex gc_mutex; /* mutex for GC */
838 struct f2fs_gc_kthread *gc_thread; /* GC thread */
839 unsigned int cur_victim_sec; /* current victim section num */
841 /* maximum # of trials to find a victim segment for SSR and GC */
842 unsigned int max_victim_search;
845 * for stat information.
846 * one is for the LFS mode, and the other is for the SSR mode.
848 #ifdef CONFIG_F2FS_STAT_FS
849 struct f2fs_stat_info *stat_info; /* FS status information */
850 unsigned int segment_count[2]; /* # of allocated segments */
851 unsigned int block_count[2]; /* # of allocated blocks */
852 atomic_t inplace_count; /* # of inplace update */
853 atomic64_t total_hit_ext; /* # of lookup extent cache */
854 atomic64_t read_hit_rbtree; /* # of hit rbtree extent node */
855 atomic64_t read_hit_largest; /* # of hit largest extent node */
856 atomic64_t read_hit_cached; /* # of hit cached extent node */
857 atomic_t inline_xattr; /* # of inline_xattr inodes */
858 atomic_t inline_inode; /* # of inline_data inodes */
859 atomic_t inline_dir; /* # of inline_dentry inodes */
860 int bg_gc; /* background gc calls */
861 unsigned int ndirty_inode[NR_INODE_TYPE]; /* # of dirty inodes */
863 unsigned int last_victim[2]; /* last victim segment # */
864 spinlock_t stat_lock; /* lock for stat operations */
866 /* For sysfs suppport */
867 struct kobject s_kobj;
868 struct completion s_kobj_unregister;
870 /* For shrinker support */
871 struct list_head s_list;
872 struct mutex umount_mutex;
873 unsigned int shrinker_run_no;
875 /* For write statistics */
876 u64 sectors_written_start;
879 /* Reference to checksum algorithm driver via cryptoapi */
880 struct crypto_shash *s_chksum_driver;
882 /* For fault injection */
883 #ifdef CONFIG_F2FS_FAULT_INJECTION
884 struct f2fs_fault_info fault_info;
888 #ifdef CONFIG_F2FS_FAULT_INJECTION
889 static inline bool time_to_inject(struct f2fs_sb_info *sbi, int type)
891 struct f2fs_fault_info *ffi = &sbi->fault_info;
893 if (!ffi->inject_rate)
896 if (!IS_FAULT_SET(ffi, type))
899 atomic_inc(&ffi->inject_ops);
900 if (atomic_read(&ffi->inject_ops) >= ffi->inject_rate) {
901 atomic_set(&ffi->inject_ops, 0);
902 printk("%sF2FS-fs : inject %s in %pF\n",
905 __builtin_return_address(0));
912 /* For write statistics. Suppose sector size is 512 bytes,
913 * and the return value is in kbytes. s is of struct f2fs_sb_info.
915 #define BD_PART_WRITTEN(s) \
916 (((u64)part_stat_read(s->sb->s_bdev->bd_part, sectors[1]) - \
917 s->sectors_written_start) >> 1)
919 static inline void f2fs_update_time(struct f2fs_sb_info *sbi, int type)
921 sbi->last_time[type] = jiffies;
924 static inline bool f2fs_time_over(struct f2fs_sb_info *sbi, int type)
926 struct timespec ts = {sbi->interval_time[type], 0};
927 unsigned long interval = timespec_to_jiffies(&ts);
929 return time_after(jiffies, sbi->last_time[type] + interval);
932 static inline bool is_idle(struct f2fs_sb_info *sbi)
934 struct block_device *bdev = sbi->sb->s_bdev;
935 struct request_queue *q = bdev_get_queue(bdev);
936 struct request_list *rl = &q->root_rl;
938 if (rl->count[BLK_RW_SYNC] || rl->count[BLK_RW_ASYNC])
941 return f2fs_time_over(sbi, REQ_TIME);
947 static inline u32 f2fs_crc32(struct f2fs_sb_info *sbi, const void *address,
950 SHASH_DESC_ON_STACK(shash, sbi->s_chksum_driver);
951 u32 *ctx = (u32 *)shash_desc_ctx(shash);
954 shash->tfm = sbi->s_chksum_driver;
956 *ctx = F2FS_SUPER_MAGIC;
958 err = crypto_shash_update(shash, address, length);
964 static inline bool f2fs_crc_valid(struct f2fs_sb_info *sbi, __u32 blk_crc,
965 void *buf, size_t buf_size)
967 return f2fs_crc32(sbi, buf, buf_size) == blk_crc;
970 static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
972 return container_of(inode, struct f2fs_inode_info, vfs_inode);
975 static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
977 return sb->s_fs_info;
980 static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
982 return F2FS_SB(inode->i_sb);
985 static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
987 return F2FS_I_SB(mapping->host);
990 static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
992 return F2FS_M_SB(page->mapping);
995 static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
997 return (struct f2fs_super_block *)(sbi->raw_super);
1000 static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
1002 return (struct f2fs_checkpoint *)(sbi->ckpt);
1005 static inline struct f2fs_node *F2FS_NODE(struct page *page)
1007 return (struct f2fs_node *)page_address(page);
1010 static inline struct f2fs_inode *F2FS_INODE(struct page *page)
1012 return &((struct f2fs_node *)page_address(page))->i;
1015 static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
1017 return (struct f2fs_nm_info *)(sbi->nm_info);
1020 static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
1022 return (struct f2fs_sm_info *)(sbi->sm_info);
1025 static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
1027 return (struct sit_info *)(SM_I(sbi)->sit_info);
1030 static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
1032 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
1035 static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
1037 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
1040 static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
1042 return sbi->meta_inode->i_mapping;
1045 static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
1047 return sbi->node_inode->i_mapping;
1050 static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
1052 return test_bit(type, &sbi->s_flag);
1055 static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
1057 set_bit(type, &sbi->s_flag);
1060 static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
1062 clear_bit(type, &sbi->s_flag);
1065 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
1067 return le64_to_cpu(cp->checkpoint_ver);
1070 static inline bool __is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1072 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1074 return ckpt_flags & f;
1077 static inline bool is_set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1079 return __is_set_ckpt_flags(F2FS_CKPT(sbi), f);
1082 static inline void __set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1084 unsigned int ckpt_flags;
1086 ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1088 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1091 static inline void set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1093 spin_lock(&sbi->cp_lock);
1094 __set_ckpt_flags(F2FS_CKPT(sbi), f);
1095 spin_unlock(&sbi->cp_lock);
1098 static inline void __clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1100 unsigned int ckpt_flags;
1102 ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1104 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1107 static inline void clear_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1109 spin_lock(&sbi->cp_lock);
1110 __clear_ckpt_flags(F2FS_CKPT(sbi), f);
1111 spin_unlock(&sbi->cp_lock);
1114 static inline bool f2fs_discard_en(struct f2fs_sb_info *sbi)
1116 struct request_queue *q = bdev_get_queue(sbi->sb->s_bdev);
1118 return blk_queue_discard(q);
1121 static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
1123 down_read(&sbi->cp_rwsem);
1126 static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
1128 up_read(&sbi->cp_rwsem);
1131 static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
1133 down_write(&sbi->cp_rwsem);
1136 static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
1138 up_write(&sbi->cp_rwsem);
1141 static inline int __get_cp_reason(struct f2fs_sb_info *sbi)
1143 int reason = CP_SYNC;
1145 if (test_opt(sbi, FASTBOOT))
1146 reason = CP_FASTBOOT;
1147 if (is_sbi_flag_set(sbi, SBI_IS_CLOSE))
1152 static inline bool __remain_node_summaries(int reason)
1154 return (reason == CP_UMOUNT || reason == CP_FASTBOOT);
1157 static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
1159 return (is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG) ||
1160 is_set_ckpt_flags(sbi, CP_FASTBOOT_FLAG));
1164 * Check whether the given nid is within node id range.
1166 static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
1168 if (unlikely(nid < F2FS_ROOT_INO(sbi)))
1170 if (unlikely(nid >= NM_I(sbi)->max_nid))
1175 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
1178 * Check whether the inode has blocks or not
1180 static inline int F2FS_HAS_BLOCKS(struct inode *inode)
1182 if (F2FS_I(inode)->i_xattr_nid)
1183 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1;
1185 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS;
1188 static inline bool f2fs_has_xattr_block(unsigned int ofs)
1190 return ofs == XATTR_NODE_OFFSET;
1193 static inline void f2fs_i_blocks_write(struct inode *, blkcnt_t, bool);
1194 static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
1195 struct inode *inode, blkcnt_t *count)
1199 #ifdef CONFIG_F2FS_FAULT_INJECTION
1200 if (time_to_inject(sbi, FAULT_BLOCK))
1204 * let's increase this in prior to actual block count change in order
1205 * for f2fs_sync_file to avoid data races when deciding checkpoint.
1207 percpu_counter_add(&sbi->alloc_valid_block_count, (*count));
1209 spin_lock(&sbi->stat_lock);
1210 sbi->total_valid_block_count += (block_t)(*count);
1211 if (unlikely(sbi->total_valid_block_count > sbi->user_block_count)) {
1212 diff = sbi->total_valid_block_count - sbi->user_block_count;
1214 sbi->total_valid_block_count = sbi->user_block_count;
1216 spin_unlock(&sbi->stat_lock);
1217 percpu_counter_sub(&sbi->alloc_valid_block_count, diff);
1221 spin_unlock(&sbi->stat_lock);
1223 f2fs_i_blocks_write(inode, *count, true);
1227 static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
1228 struct inode *inode,
1231 spin_lock(&sbi->stat_lock);
1232 f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
1233 f2fs_bug_on(sbi, inode->i_blocks < count);
1234 sbi->total_valid_block_count -= (block_t)count;
1235 spin_unlock(&sbi->stat_lock);
1236 f2fs_i_blocks_write(inode, count, false);
1239 static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
1241 atomic_inc(&sbi->nr_pages[count_type]);
1243 if (count_type == F2FS_DIRTY_DATA || count_type == F2FS_INMEM_PAGES)
1246 set_sbi_flag(sbi, SBI_IS_DIRTY);
1249 static inline void inode_inc_dirty_pages(struct inode *inode)
1251 percpu_counter_inc(&F2FS_I(inode)->dirty_pages);
1252 inc_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
1253 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
1256 static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
1258 atomic_dec(&sbi->nr_pages[count_type]);
1261 static inline void inode_dec_dirty_pages(struct inode *inode)
1263 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
1264 !S_ISLNK(inode->i_mode))
1267 percpu_counter_dec(&F2FS_I(inode)->dirty_pages);
1268 dec_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
1269 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
1272 static inline s64 get_pages(struct f2fs_sb_info *sbi, int count_type)
1274 return atomic_read(&sbi->nr_pages[count_type]);
1277 static inline s64 get_dirty_pages(struct inode *inode)
1279 return percpu_counter_sum_positive(&F2FS_I(inode)->dirty_pages);
1282 static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
1284 unsigned int pages_per_sec = sbi->segs_per_sec * sbi->blocks_per_seg;
1285 unsigned int segs = (get_pages(sbi, block_type) + pages_per_sec - 1) >>
1286 sbi->log_blocks_per_seg;
1288 return segs / sbi->segs_per_sec;
1291 static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
1293 return sbi->total_valid_block_count;
1296 static inline block_t discard_blocks(struct f2fs_sb_info *sbi)
1298 return sbi->discard_blks;
1301 static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
1303 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1305 /* return NAT or SIT bitmap */
1306 if (flag == NAT_BITMAP)
1307 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
1308 else if (flag == SIT_BITMAP)
1309 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
1314 static inline block_t __cp_payload(struct f2fs_sb_info *sbi)
1316 return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
1319 static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
1321 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1324 if (__cp_payload(sbi) > 0) {
1325 if (flag == NAT_BITMAP)
1326 return &ckpt->sit_nat_version_bitmap;
1328 return (unsigned char *)ckpt + F2FS_BLKSIZE;
1330 offset = (flag == NAT_BITMAP) ?
1331 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
1332 return &ckpt->sit_nat_version_bitmap + offset;
1336 static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
1339 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1340 unsigned long long ckpt_version = cur_cp_version(ckpt);
1342 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
1345 * odd numbered checkpoint should at cp segment 0
1346 * and even segment must be at cp segment 1
1348 if (!(ckpt_version & 1))
1349 start_addr += sbi->blocks_per_seg;
1354 static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
1356 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
1359 static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
1360 struct inode *inode)
1362 block_t valid_block_count;
1363 unsigned int valid_node_count;
1365 spin_lock(&sbi->stat_lock);
1367 valid_block_count = sbi->total_valid_block_count + 1;
1368 if (unlikely(valid_block_count > sbi->user_block_count)) {
1369 spin_unlock(&sbi->stat_lock);
1373 valid_node_count = sbi->total_valid_node_count + 1;
1374 if (unlikely(valid_node_count > sbi->total_node_count)) {
1375 spin_unlock(&sbi->stat_lock);
1380 f2fs_i_blocks_write(inode, 1, true);
1382 sbi->total_valid_node_count++;
1383 sbi->total_valid_block_count++;
1384 spin_unlock(&sbi->stat_lock);
1386 percpu_counter_inc(&sbi->alloc_valid_block_count);
1390 static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
1391 struct inode *inode)
1393 spin_lock(&sbi->stat_lock);
1395 f2fs_bug_on(sbi, !sbi->total_valid_block_count);
1396 f2fs_bug_on(sbi, !sbi->total_valid_node_count);
1397 f2fs_bug_on(sbi, !inode->i_blocks);
1399 f2fs_i_blocks_write(inode, 1, false);
1400 sbi->total_valid_node_count--;
1401 sbi->total_valid_block_count--;
1403 spin_unlock(&sbi->stat_lock);
1406 static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
1408 return sbi->total_valid_node_count;
1411 static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
1413 percpu_counter_inc(&sbi->total_valid_inode_count);
1416 static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
1418 percpu_counter_dec(&sbi->total_valid_inode_count);
1421 static inline s64 valid_inode_count(struct f2fs_sb_info *sbi)
1423 return percpu_counter_sum_positive(&sbi->total_valid_inode_count);
1426 static inline struct page *f2fs_grab_cache_page(struct address_space *mapping,
1427 pgoff_t index, bool for_write)
1429 #ifdef CONFIG_F2FS_FAULT_INJECTION
1430 struct page *page = find_lock_page(mapping, index);
1434 if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_ALLOC))
1438 return grab_cache_page(mapping, index);
1439 return grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS);
1442 static inline void f2fs_copy_page(struct page *src, struct page *dst)
1444 char *src_kaddr = kmap(src);
1445 char *dst_kaddr = kmap(dst);
1447 memcpy(dst_kaddr, src_kaddr, PAGE_SIZE);
1452 static inline void f2fs_put_page(struct page *page, int unlock)
1458 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
1464 static inline void f2fs_put_dnode(struct dnode_of_data *dn)
1467 f2fs_put_page(dn->node_page, 1);
1468 if (dn->inode_page && dn->node_page != dn->inode_page)
1469 f2fs_put_page(dn->inode_page, 0);
1470 dn->node_page = NULL;
1471 dn->inode_page = NULL;
1474 static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
1477 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
1480 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
1485 entry = kmem_cache_alloc(cachep, flags);
1487 entry = kmem_cache_alloc(cachep, flags | __GFP_NOFAIL);
1491 static inline struct bio *f2fs_bio_alloc(int npages)
1495 /* No failure on bio allocation */
1496 bio = bio_alloc(GFP_NOIO, npages);
1498 bio = bio_alloc(GFP_NOIO | __GFP_NOFAIL, npages);
1502 static inline void f2fs_radix_tree_insert(struct radix_tree_root *root,
1503 unsigned long index, void *item)
1505 while (radix_tree_insert(root, index, item))
1509 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1511 static inline bool IS_INODE(struct page *page)
1513 struct f2fs_node *p = F2FS_NODE(page);
1514 return RAW_IS_INODE(p);
1517 static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
1519 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
1522 static inline block_t datablock_addr(struct page *node_page,
1523 unsigned int offset)
1525 struct f2fs_node *raw_node;
1527 raw_node = F2FS_NODE(node_page);
1528 addr_array = blkaddr_in_node(raw_node);
1529 return le32_to_cpu(addr_array[offset]);
1532 static inline int f2fs_test_bit(unsigned int nr, char *addr)
1537 mask = 1 << (7 - (nr & 0x07));
1538 return mask & *addr;
1541 static inline void f2fs_set_bit(unsigned int nr, char *addr)
1546 mask = 1 << (7 - (nr & 0x07));
1550 static inline void f2fs_clear_bit(unsigned int nr, char *addr)
1555 mask = 1 << (7 - (nr & 0x07));
1559 static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
1565 mask = 1 << (7 - (nr & 0x07));
1571 static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
1577 mask = 1 << (7 - (nr & 0x07));
1583 static inline void f2fs_change_bit(unsigned int nr, char *addr)
1588 mask = 1 << (7 - (nr & 0x07));
1592 /* used for f2fs_inode_info->flags */
1594 FI_NEW_INODE, /* indicate newly allocated inode */
1595 FI_DIRTY_INODE, /* indicate inode is dirty or not */
1596 FI_AUTO_RECOVER, /* indicate inode is recoverable */
1597 FI_DIRTY_DIR, /* indicate directory has dirty pages */
1598 FI_INC_LINK, /* need to increment i_nlink */
1599 FI_ACL_MODE, /* indicate acl mode */
1600 FI_NO_ALLOC, /* should not allocate any blocks */
1601 FI_FREE_NID, /* free allocated nide */
1602 FI_NO_EXTENT, /* not to use the extent cache */
1603 FI_INLINE_XATTR, /* used for inline xattr */
1604 FI_INLINE_DATA, /* used for inline data*/
1605 FI_INLINE_DENTRY, /* used for inline dentry */
1606 FI_APPEND_WRITE, /* inode has appended data */
1607 FI_UPDATE_WRITE, /* inode has in-place-update data */
1608 FI_NEED_IPU, /* used for ipu per file */
1609 FI_ATOMIC_FILE, /* indicate atomic file */
1610 FI_VOLATILE_FILE, /* indicate volatile file */
1611 FI_FIRST_BLOCK_WRITTEN, /* indicate #0 data block was written */
1612 FI_DROP_CACHE, /* drop dirty page cache */
1613 FI_DATA_EXIST, /* indicate data exists */
1614 FI_INLINE_DOTS, /* indicate inline dot dentries */
1615 FI_DO_DEFRAG, /* indicate defragment is running */
1616 FI_DIRTY_FILE, /* indicate regular/symlink has dirty pages */
1619 static inline void __mark_inode_dirty_flag(struct inode *inode,
1623 case FI_INLINE_XATTR:
1624 case FI_INLINE_DATA:
1625 case FI_INLINE_DENTRY:
1629 case FI_INLINE_DOTS:
1630 f2fs_mark_inode_dirty_sync(inode, true);
1634 static inline void set_inode_flag(struct inode *inode, int flag)
1636 if (!test_bit(flag, &F2FS_I(inode)->flags))
1637 set_bit(flag, &F2FS_I(inode)->flags);
1638 __mark_inode_dirty_flag(inode, flag, true);
1641 static inline int is_inode_flag_set(struct inode *inode, int flag)
1643 return test_bit(flag, &F2FS_I(inode)->flags);
1646 static inline void clear_inode_flag(struct inode *inode, int flag)
1648 if (test_bit(flag, &F2FS_I(inode)->flags))
1649 clear_bit(flag, &F2FS_I(inode)->flags);
1650 __mark_inode_dirty_flag(inode, flag, false);
1653 static inline void set_acl_inode(struct inode *inode, umode_t mode)
1655 F2FS_I(inode)->i_acl_mode = mode;
1656 set_inode_flag(inode, FI_ACL_MODE);
1657 f2fs_mark_inode_dirty_sync(inode, false);
1660 static inline void f2fs_i_links_write(struct inode *inode, bool inc)
1666 f2fs_mark_inode_dirty_sync(inode, true);
1669 static inline void f2fs_i_blocks_write(struct inode *inode,
1670 blkcnt_t diff, bool add)
1672 bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
1673 bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);
1675 inode->i_blocks = add ? inode->i_blocks + diff :
1676 inode->i_blocks - diff;
1677 f2fs_mark_inode_dirty_sync(inode, true);
1678 if (clean || recover)
1679 set_inode_flag(inode, FI_AUTO_RECOVER);
1682 static inline void f2fs_i_size_write(struct inode *inode, loff_t i_size)
1684 bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
1685 bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);
1687 if (i_size_read(inode) == i_size)
1690 i_size_write(inode, i_size);
1691 f2fs_mark_inode_dirty_sync(inode, true);
1692 if (clean || recover)
1693 set_inode_flag(inode, FI_AUTO_RECOVER);
1696 static inline bool f2fs_skip_inode_update(struct inode *inode)
1698 if (!is_inode_flag_set(inode, FI_AUTO_RECOVER))
1700 return F2FS_I(inode)->last_disk_size == i_size_read(inode);
1703 static inline void f2fs_i_depth_write(struct inode *inode, unsigned int depth)
1705 F2FS_I(inode)->i_current_depth = depth;
1706 f2fs_mark_inode_dirty_sync(inode, true);
1709 static inline void f2fs_i_xnid_write(struct inode *inode, nid_t xnid)
1711 F2FS_I(inode)->i_xattr_nid = xnid;
1712 f2fs_mark_inode_dirty_sync(inode, true);
1715 static inline void f2fs_i_pino_write(struct inode *inode, nid_t pino)
1717 F2FS_I(inode)->i_pino = pino;
1718 f2fs_mark_inode_dirty_sync(inode, true);
1721 static inline void get_inline_info(struct inode *inode, struct f2fs_inode *ri)
1723 struct f2fs_inode_info *fi = F2FS_I(inode);
1725 if (ri->i_inline & F2FS_INLINE_XATTR)
1726 set_bit(FI_INLINE_XATTR, &fi->flags);
1727 if (ri->i_inline & F2FS_INLINE_DATA)
1728 set_bit(FI_INLINE_DATA, &fi->flags);
1729 if (ri->i_inline & F2FS_INLINE_DENTRY)
1730 set_bit(FI_INLINE_DENTRY, &fi->flags);
1731 if (ri->i_inline & F2FS_DATA_EXIST)
1732 set_bit(FI_DATA_EXIST, &fi->flags);
1733 if (ri->i_inline & F2FS_INLINE_DOTS)
1734 set_bit(FI_INLINE_DOTS, &fi->flags);
1737 static inline void set_raw_inline(struct inode *inode, struct f2fs_inode *ri)
1741 if (is_inode_flag_set(inode, FI_INLINE_XATTR))
1742 ri->i_inline |= F2FS_INLINE_XATTR;
1743 if (is_inode_flag_set(inode, FI_INLINE_DATA))
1744 ri->i_inline |= F2FS_INLINE_DATA;
1745 if (is_inode_flag_set(inode, FI_INLINE_DENTRY))
1746 ri->i_inline |= F2FS_INLINE_DENTRY;
1747 if (is_inode_flag_set(inode, FI_DATA_EXIST))
1748 ri->i_inline |= F2FS_DATA_EXIST;
1749 if (is_inode_flag_set(inode, FI_INLINE_DOTS))
1750 ri->i_inline |= F2FS_INLINE_DOTS;
1753 static inline int f2fs_has_inline_xattr(struct inode *inode)
1755 return is_inode_flag_set(inode, FI_INLINE_XATTR);
1758 static inline unsigned int addrs_per_inode(struct inode *inode)
1760 if (f2fs_has_inline_xattr(inode))
1761 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
1762 return DEF_ADDRS_PER_INODE;
1765 static inline void *inline_xattr_addr(struct page *page)
1767 struct f2fs_inode *ri = F2FS_INODE(page);
1768 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
1769 F2FS_INLINE_XATTR_ADDRS]);
1772 static inline int inline_xattr_size(struct inode *inode)
1774 if (f2fs_has_inline_xattr(inode))
1775 return F2FS_INLINE_XATTR_ADDRS << 2;
1780 static inline int f2fs_has_inline_data(struct inode *inode)
1782 return is_inode_flag_set(inode, FI_INLINE_DATA);
1785 static inline void f2fs_clear_inline_inode(struct inode *inode)
1787 clear_inode_flag(inode, FI_INLINE_DATA);
1788 clear_inode_flag(inode, FI_DATA_EXIST);
1791 static inline int f2fs_exist_data(struct inode *inode)
1793 return is_inode_flag_set(inode, FI_DATA_EXIST);
1796 static inline int f2fs_has_inline_dots(struct inode *inode)
1798 return is_inode_flag_set(inode, FI_INLINE_DOTS);
1801 static inline bool f2fs_is_atomic_file(struct inode *inode)
1803 return is_inode_flag_set(inode, FI_ATOMIC_FILE);
1806 static inline bool f2fs_is_volatile_file(struct inode *inode)
1808 return is_inode_flag_set(inode, FI_VOLATILE_FILE);
1811 static inline bool f2fs_is_first_block_written(struct inode *inode)
1813 return is_inode_flag_set(inode, FI_FIRST_BLOCK_WRITTEN);
1816 static inline bool f2fs_is_drop_cache(struct inode *inode)
1818 return is_inode_flag_set(inode, FI_DROP_CACHE);
1821 static inline void *inline_data_addr(struct page *page)
1823 struct f2fs_inode *ri = F2FS_INODE(page);
1824 return (void *)&(ri->i_addr[1]);
1827 static inline int f2fs_has_inline_dentry(struct inode *inode)
1829 return is_inode_flag_set(inode, FI_INLINE_DENTRY);
1832 static inline void f2fs_dentry_kunmap(struct inode *dir, struct page *page)
1834 if (!f2fs_has_inline_dentry(dir))
1838 static inline int is_file(struct inode *inode, int type)
1840 return F2FS_I(inode)->i_advise & type;
1843 static inline void set_file(struct inode *inode, int type)
1845 F2FS_I(inode)->i_advise |= type;
1846 f2fs_mark_inode_dirty_sync(inode, true);
1849 static inline void clear_file(struct inode *inode, int type)
1851 F2FS_I(inode)->i_advise &= ~type;
1852 f2fs_mark_inode_dirty_sync(inode, true);
1855 static inline int f2fs_readonly(struct super_block *sb)
1857 return sb->s_flags & MS_RDONLY;
1860 static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
1862 return is_set_ckpt_flags(sbi, CP_ERROR_FLAG);
1865 static inline bool is_dot_dotdot(const struct qstr *str)
1867 if (str->len == 1 && str->name[0] == '.')
1870 if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.')
1876 static inline bool f2fs_may_extent_tree(struct inode *inode)
1878 if (!test_opt(F2FS_I_SB(inode), EXTENT_CACHE) ||
1879 is_inode_flag_set(inode, FI_NO_EXTENT))
1882 return S_ISREG(inode->i_mode);
1885 static inline void *f2fs_kmalloc(struct f2fs_sb_info *sbi,
1886 size_t size, gfp_t flags)
1888 #ifdef CONFIG_F2FS_FAULT_INJECTION
1889 if (time_to_inject(sbi, FAULT_KMALLOC))
1892 return kmalloc(size, flags);
1895 static inline void *f2fs_kvmalloc(size_t size, gfp_t flags)
1899 ret = kmalloc(size, flags | __GFP_NOWARN);
1901 ret = __vmalloc(size, flags, PAGE_KERNEL);
1905 static inline void *f2fs_kvzalloc(size_t size, gfp_t flags)
1909 ret = kzalloc(size, flags | __GFP_NOWARN);
1911 ret = __vmalloc(size, flags | __GFP_ZERO, PAGE_KERNEL);
1915 #define get_inode_mode(i) \
1916 ((is_inode_flag_set(i, FI_ACL_MODE)) ? \
1917 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1919 /* get offset of first page in next direct node */
1920 #define PGOFS_OF_NEXT_DNODE(pgofs, inode) \
1921 ((pgofs < ADDRS_PER_INODE(inode)) ? ADDRS_PER_INODE(inode) : \
1922 (pgofs - ADDRS_PER_INODE(inode) + ADDRS_PER_BLOCK) / \
1923 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(inode))
1928 int f2fs_sync_file(struct file *, loff_t, loff_t, int);
1929 void truncate_data_blocks(struct dnode_of_data *);
1930 int truncate_blocks(struct inode *, u64, bool);
1931 int f2fs_truncate(struct inode *);
1932 int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
1933 int f2fs_setattr(struct dentry *, struct iattr *);
1934 int truncate_hole(struct inode *, pgoff_t, pgoff_t);
1935 int truncate_data_blocks_range(struct dnode_of_data *, int);
1936 long f2fs_ioctl(struct file *, unsigned int, unsigned long);
1937 long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long);
1942 void f2fs_set_inode_flags(struct inode *);
1943 struct inode *f2fs_iget(struct super_block *, unsigned long);
1944 struct inode *f2fs_iget_retry(struct super_block *, unsigned long);
1945 int try_to_free_nats(struct f2fs_sb_info *, int);
1946 int update_inode(struct inode *, struct page *);
1947 int update_inode_page(struct inode *);
1948 int f2fs_write_inode(struct inode *, struct writeback_control *);
1949 void f2fs_evict_inode(struct inode *);
1950 void handle_failed_inode(struct inode *);
1955 struct dentry *f2fs_get_parent(struct dentry *child);
1960 void set_de_type(struct f2fs_dir_entry *, umode_t);
1961 unsigned char get_de_type(struct f2fs_dir_entry *);
1962 struct f2fs_dir_entry *find_target_dentry(struct fscrypt_name *,
1963 f2fs_hash_t, int *, struct f2fs_dentry_ptr *);
1964 int f2fs_fill_dentries(struct dir_context *, struct f2fs_dentry_ptr *,
1965 unsigned int, struct fscrypt_str *);
1966 void do_make_empty_dir(struct inode *, struct inode *,
1967 struct f2fs_dentry_ptr *);
1968 struct page *init_inode_metadata(struct inode *, struct inode *,
1969 const struct qstr *, const struct qstr *, struct page *);
1970 void update_parent_metadata(struct inode *, struct inode *, unsigned int);
1971 int room_for_filename(const void *, int, int);
1972 void f2fs_drop_nlink(struct inode *, struct inode *);
1973 struct f2fs_dir_entry *__f2fs_find_entry(struct inode *, struct fscrypt_name *,
1975 struct f2fs_dir_entry *f2fs_find_entry(struct inode *, const struct qstr *,
1977 struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
1978 ino_t f2fs_inode_by_name(struct inode *, const struct qstr *, struct page **);
1979 void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
1980 struct page *, struct inode *);
1981 int update_dent_inode(struct inode *, struct inode *, const struct qstr *);
1982 void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *,
1983 const struct qstr *, f2fs_hash_t , unsigned int);
1984 int f2fs_add_regular_entry(struct inode *, const struct qstr *,
1985 const struct qstr *, struct inode *, nid_t, umode_t);
1986 int __f2fs_do_add_link(struct inode *, struct fscrypt_name*, struct inode *,
1988 int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *, nid_t,
1990 void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *,
1992 int f2fs_do_tmpfile(struct inode *, struct inode *);
1993 bool f2fs_empty_dir(struct inode *);
1995 static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
1997 return __f2fs_add_link(d_inode(dentry->d_parent), &dentry->d_name,
1998 inode, inode->i_ino, inode->i_mode);
2004 int f2fs_inode_dirtied(struct inode *, bool);
2005 void f2fs_inode_synced(struct inode *);
2006 int f2fs_commit_super(struct f2fs_sb_info *, bool);
2007 int f2fs_sync_fs(struct super_block *, int);
2008 extern __printf(3, 4)
2009 void f2fs_msg(struct super_block *, const char *, const char *, ...);
2010 int sanity_check_ckpt(struct f2fs_sb_info *sbi);
2015 f2fs_hash_t f2fs_dentry_hash(const struct qstr *);
2020 struct dnode_of_data;
2023 bool available_free_memory(struct f2fs_sb_info *, int);
2024 int need_dentry_mark(struct f2fs_sb_info *, nid_t);
2025 bool is_checkpointed_node(struct f2fs_sb_info *, nid_t);
2026 bool need_inode_block_update(struct f2fs_sb_info *, nid_t);
2027 void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
2028 pgoff_t get_next_page_offset(struct dnode_of_data *, pgoff_t);
2029 int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);
2030 int truncate_inode_blocks(struct inode *, pgoff_t);
2031 int truncate_xattr_node(struct inode *, struct page *);
2032 int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t);
2033 int remove_inode_page(struct inode *);
2034 struct page *new_inode_page(struct inode *);
2035 struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *);
2036 void ra_node_page(struct f2fs_sb_info *, nid_t);
2037 struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
2038 struct page *get_node_page_ra(struct page *, int);
2039 void move_node_page(struct page *, int);
2040 int fsync_node_pages(struct f2fs_sb_info *, struct inode *,
2041 struct writeback_control *, bool);
2042 int sync_node_pages(struct f2fs_sb_info *, struct writeback_control *);
2043 void build_free_nids(struct f2fs_sb_info *, bool);
2044 bool alloc_nid(struct f2fs_sb_info *, nid_t *);
2045 void alloc_nid_done(struct f2fs_sb_info *, nid_t);
2046 void alloc_nid_failed(struct f2fs_sb_info *, nid_t);
2047 int try_to_free_nids(struct f2fs_sb_info *, int);
2048 void recover_inline_xattr(struct inode *, struct page *);
2049 void recover_xattr_data(struct inode *, struct page *, block_t);
2050 int recover_inode_page(struct f2fs_sb_info *, struct page *);
2051 int restore_node_summary(struct f2fs_sb_info *, unsigned int,
2052 struct f2fs_summary_block *);
2053 void flush_nat_entries(struct f2fs_sb_info *);
2054 int build_node_manager(struct f2fs_sb_info *);
2055 void destroy_node_manager(struct f2fs_sb_info *);
2056 int __init create_node_manager_caches(void);
2057 void destroy_node_manager_caches(void);
2062 void register_inmem_page(struct inode *, struct page *);
2063 void drop_inmem_pages(struct inode *);
2064 int commit_inmem_pages(struct inode *);
2065 void f2fs_balance_fs(struct f2fs_sb_info *, bool);
2066 void f2fs_balance_fs_bg(struct f2fs_sb_info *);
2067 int f2fs_issue_flush(struct f2fs_sb_info *);
2068 int create_flush_cmd_control(struct f2fs_sb_info *);
2069 void destroy_flush_cmd_control(struct f2fs_sb_info *);
2070 void invalidate_blocks(struct f2fs_sb_info *, block_t);
2071 bool is_checkpointed_data(struct f2fs_sb_info *, block_t);
2072 void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t);
2073 void f2fs_wait_all_discard_bio(struct f2fs_sb_info *);
2074 void clear_prefree_segments(struct f2fs_sb_info *, struct cp_control *);
2075 void release_discard_addrs(struct f2fs_sb_info *);
2076 int npages_for_summary_flush(struct f2fs_sb_info *, bool);
2077 void allocate_new_segments(struct f2fs_sb_info *);
2078 int f2fs_trim_fs(struct f2fs_sb_info *, struct fstrim_range *);
2079 struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
2080 void update_meta_page(struct f2fs_sb_info *, void *, block_t);
2081 void write_meta_page(struct f2fs_sb_info *, struct page *);
2082 void write_node_page(unsigned int, struct f2fs_io_info *);
2083 void write_data_page(struct dnode_of_data *, struct f2fs_io_info *);
2084 void rewrite_data_page(struct f2fs_io_info *);
2085 void __f2fs_replace_block(struct f2fs_sb_info *, struct f2fs_summary *,
2086 block_t, block_t, bool, bool);
2087 void f2fs_replace_block(struct f2fs_sb_info *, struct dnode_of_data *,
2088 block_t, block_t, unsigned char, bool, bool);
2089 void allocate_data_block(struct f2fs_sb_info *, struct page *,
2090 block_t, block_t *, struct f2fs_summary *, int);
2091 void f2fs_wait_on_page_writeback(struct page *, enum page_type, bool);
2092 void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info *, block_t);
2093 void write_data_summaries(struct f2fs_sb_info *, block_t);
2094 void write_node_summaries(struct f2fs_sb_info *, block_t);
2095 int lookup_journal_in_cursum(struct f2fs_journal *, int, unsigned int, int);
2096 void flush_sit_entries(struct f2fs_sb_info *, struct cp_control *);
2097 int build_segment_manager(struct f2fs_sb_info *);
2098 void destroy_segment_manager(struct f2fs_sb_info *);
2099 int __init create_segment_manager_caches(void);
2100 void destroy_segment_manager_caches(void);
2105 void f2fs_stop_checkpoint(struct f2fs_sb_info *, bool);
2106 struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
2107 struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
2108 struct page *get_tmp_page(struct f2fs_sb_info *, pgoff_t);
2109 bool is_valid_blkaddr(struct f2fs_sb_info *, block_t, int);
2110 int ra_meta_pages(struct f2fs_sb_info *, block_t, int, int, bool);
2111 void ra_meta_pages_cond(struct f2fs_sb_info *, pgoff_t);
2112 long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
2113 void add_ino_entry(struct f2fs_sb_info *, nid_t, int type);
2114 void remove_ino_entry(struct f2fs_sb_info *, nid_t, int type);
2115 void release_ino_entry(struct f2fs_sb_info *, bool);
2116 bool exist_written_data(struct f2fs_sb_info *, nid_t, int);
2117 int f2fs_sync_inode_meta(struct f2fs_sb_info *);
2118 int acquire_orphan_inode(struct f2fs_sb_info *);
2119 void release_orphan_inode(struct f2fs_sb_info *);
2120 void add_orphan_inode(struct inode *);
2121 void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
2122 int recover_orphan_inodes(struct f2fs_sb_info *);
2123 int get_valid_checkpoint(struct f2fs_sb_info *);
2124 void update_dirty_page(struct inode *, struct page *);
2125 void remove_dirty_inode(struct inode *);
2126 int sync_dirty_inodes(struct f2fs_sb_info *, enum inode_type);
2127 int write_checkpoint(struct f2fs_sb_info *, struct cp_control *);
2128 void init_ino_entry_info(struct f2fs_sb_info *);
2129 int __init create_checkpoint_caches(void);
2130 void destroy_checkpoint_caches(void);
2135 void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int);
2136 void f2fs_submit_merged_bio_cond(struct f2fs_sb_info *, struct inode *,
2137 struct page *, nid_t, enum page_type, int);
2138 void f2fs_flush_merged_bios(struct f2fs_sb_info *);
2139 int f2fs_submit_page_bio(struct f2fs_io_info *);
2140 void f2fs_submit_page_mbio(struct f2fs_io_info *);
2141 void set_data_blkaddr(struct dnode_of_data *);
2142 void f2fs_update_data_blkaddr(struct dnode_of_data *, block_t);
2143 int reserve_new_blocks(struct dnode_of_data *, blkcnt_t);
2144 int reserve_new_block(struct dnode_of_data *);
2145 int f2fs_get_block(struct dnode_of_data *, pgoff_t);
2146 ssize_t f2fs_preallocate_blocks(struct kiocb *, struct iov_iter *);
2147 int f2fs_reserve_block(struct dnode_of_data *, pgoff_t);
2148 struct page *get_read_data_page(struct inode *, pgoff_t, int, bool);
2149 struct page *find_data_page(struct inode *, pgoff_t);
2150 struct page *get_lock_data_page(struct inode *, pgoff_t, bool);
2151 struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
2152 int do_write_data_page(struct f2fs_io_info *);
2153 int f2fs_map_blocks(struct inode *, struct f2fs_map_blocks *, int, int);
2154 int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64);
2155 void f2fs_set_page_dirty_nobuffers(struct page *);
2156 void f2fs_invalidate_page(struct page *, unsigned int, unsigned int);
2157 int f2fs_release_page(struct page *, gfp_t);
2158 #ifdef CONFIG_MIGRATION
2159 int f2fs_migrate_page(struct address_space *, struct page *, struct page *,
2166 int start_gc_thread(struct f2fs_sb_info *);
2167 void stop_gc_thread(struct f2fs_sb_info *);
2168 block_t start_bidx_of_node(unsigned int, struct inode *);
2169 int f2fs_gc(struct f2fs_sb_info *, bool);
2170 void build_gc_manager(struct f2fs_sb_info *);
2175 int recover_fsync_data(struct f2fs_sb_info *, bool);
2176 bool space_for_roll_forward(struct f2fs_sb_info *);
2181 #ifdef CONFIG_F2FS_STAT_FS
2182 struct f2fs_stat_info {
2183 struct list_head stat_list;
2184 struct f2fs_sb_info *sbi;
2185 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
2186 int main_area_segs, main_area_sections, main_area_zones;
2187 unsigned long long hit_largest, hit_cached, hit_rbtree;
2188 unsigned long long hit_total, total_ext;
2189 int ext_tree, zombie_tree, ext_node;
2190 int ndirty_node, ndirty_dent, ndirty_meta, ndirty_data, ndirty_imeta;
2192 unsigned int ndirty_dirs, ndirty_files, ndirty_all;
2193 int nats, dirty_nats, sits, dirty_sits, free_nids, alloc_nids;
2194 int total_count, utilization;
2196 int inline_xattr, inline_inode, inline_dir, orphans;
2197 unsigned int valid_count, valid_node_count, valid_inode_count, discard_blks;
2198 unsigned int bimodal, avg_vblocks;
2199 int util_free, util_valid, util_invalid;
2200 int rsvd_segs, overp_segs;
2201 int dirty_count, node_pages, meta_pages;
2202 int prefree_count, call_count, cp_count, bg_cp_count;
2203 int tot_segs, node_segs, data_segs, free_segs, free_secs;
2204 int bg_node_segs, bg_data_segs;
2205 int tot_blks, data_blks, node_blks;
2206 int bg_data_blks, bg_node_blks;
2207 int curseg[NR_CURSEG_TYPE];
2208 int cursec[NR_CURSEG_TYPE];
2209 int curzone[NR_CURSEG_TYPE];
2211 unsigned int segment_count[2];
2212 unsigned int block_count[2];
2213 unsigned int inplace_count;
2214 unsigned long long base_mem, cache_mem, page_mem;
2217 static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
2219 return (struct f2fs_stat_info *)sbi->stat_info;
2222 #define stat_inc_cp_count(si) ((si)->cp_count++)
2223 #define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++)
2224 #define stat_inc_call_count(si) ((si)->call_count++)
2225 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
2226 #define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++)
2227 #define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--)
2228 #define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext))
2229 #define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree))
2230 #define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest))
2231 #define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached))
2232 #define stat_inc_inline_xattr(inode) \
2234 if (f2fs_has_inline_xattr(inode)) \
2235 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
2237 #define stat_dec_inline_xattr(inode) \
2239 if (f2fs_has_inline_xattr(inode)) \
2240 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
2242 #define stat_inc_inline_inode(inode) \
2244 if (f2fs_has_inline_data(inode)) \
2245 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
2247 #define stat_dec_inline_inode(inode) \
2249 if (f2fs_has_inline_data(inode)) \
2250 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
2252 #define stat_inc_inline_dir(inode) \
2254 if (f2fs_has_inline_dentry(inode)) \
2255 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
2257 #define stat_dec_inline_dir(inode) \
2259 if (f2fs_has_inline_dentry(inode)) \
2260 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
2262 #define stat_inc_seg_type(sbi, curseg) \
2263 ((sbi)->segment_count[(curseg)->alloc_type]++)
2264 #define stat_inc_block_count(sbi, curseg) \
2265 ((sbi)->block_count[(curseg)->alloc_type]++)
2266 #define stat_inc_inplace_blocks(sbi) \
2267 (atomic_inc(&(sbi)->inplace_count))
2268 #define stat_inc_seg_count(sbi, type, gc_type) \
2270 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2272 if (type == SUM_TYPE_DATA) { \
2274 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
2277 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
2281 #define stat_inc_tot_blk_count(si, blks) \
2282 (si->tot_blks += (blks))
2284 #define stat_inc_data_blk_count(sbi, blks, gc_type) \
2286 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2287 stat_inc_tot_blk_count(si, blks); \
2288 si->data_blks += (blks); \
2289 si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \
2292 #define stat_inc_node_blk_count(sbi, blks, gc_type) \
2294 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2295 stat_inc_tot_blk_count(si, blks); \
2296 si->node_blks += (blks); \
2297 si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \
2300 int f2fs_build_stats(struct f2fs_sb_info *);
2301 void f2fs_destroy_stats(struct f2fs_sb_info *);
2302 int __init f2fs_create_root_stats(void);
2303 void f2fs_destroy_root_stats(void);
2305 #define stat_inc_cp_count(si)
2306 #define stat_inc_bg_cp_count(si)
2307 #define stat_inc_call_count(si)
2308 #define stat_inc_bggc_count(si)
2309 #define stat_inc_dirty_inode(sbi, type)
2310 #define stat_dec_dirty_inode(sbi, type)
2311 #define stat_inc_total_hit(sb)
2312 #define stat_inc_rbtree_node_hit(sb)
2313 #define stat_inc_largest_node_hit(sbi)
2314 #define stat_inc_cached_node_hit(sbi)
2315 #define stat_inc_inline_xattr(inode)
2316 #define stat_dec_inline_xattr(inode)
2317 #define stat_inc_inline_inode(inode)
2318 #define stat_dec_inline_inode(inode)
2319 #define stat_inc_inline_dir(inode)
2320 #define stat_dec_inline_dir(inode)
2321 #define stat_inc_seg_type(sbi, curseg)
2322 #define stat_inc_block_count(sbi, curseg)
2323 #define stat_inc_inplace_blocks(sbi)
2324 #define stat_inc_seg_count(sbi, type, gc_type)
2325 #define stat_inc_tot_blk_count(si, blks)
2326 #define stat_inc_data_blk_count(sbi, blks, gc_type)
2327 #define stat_inc_node_blk_count(sbi, blks, gc_type)
2329 static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
2330 static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
2331 static inline int __init f2fs_create_root_stats(void) { return 0; }
2332 static inline void f2fs_destroy_root_stats(void) { }
2335 extern const struct file_operations f2fs_dir_operations;
2336 extern const struct file_operations f2fs_file_operations;
2337 extern const struct inode_operations f2fs_file_inode_operations;
2338 extern const struct address_space_operations f2fs_dblock_aops;
2339 extern const struct address_space_operations f2fs_node_aops;
2340 extern const struct address_space_operations f2fs_meta_aops;
2341 extern const struct inode_operations f2fs_dir_inode_operations;
2342 extern const struct inode_operations f2fs_symlink_inode_operations;
2343 extern const struct inode_operations f2fs_encrypted_symlink_inode_operations;
2344 extern const struct inode_operations f2fs_special_inode_operations;
2345 extern struct kmem_cache *inode_entry_slab;
2350 bool f2fs_may_inline_data(struct inode *);
2351 bool f2fs_may_inline_dentry(struct inode *);
2352 void read_inline_data(struct page *, struct page *);
2353 bool truncate_inline_inode(struct page *, u64);
2354 int f2fs_read_inline_data(struct inode *, struct page *);
2355 int f2fs_convert_inline_page(struct dnode_of_data *, struct page *);
2356 int f2fs_convert_inline_inode(struct inode *);
2357 int f2fs_write_inline_data(struct inode *, struct page *);
2358 bool recover_inline_data(struct inode *, struct page *);
2359 struct f2fs_dir_entry *find_in_inline_dir(struct inode *,
2360 struct fscrypt_name *, struct page **);
2361 int make_empty_inline_dir(struct inode *inode, struct inode *, struct page *);
2362 int f2fs_add_inline_entry(struct inode *, const struct qstr *,
2363 const struct qstr *, struct inode *, nid_t, umode_t);
2364 void f2fs_delete_inline_entry(struct f2fs_dir_entry *, struct page *,
2365 struct inode *, struct inode *);
2366 bool f2fs_empty_inline_dir(struct inode *);
2367 int f2fs_read_inline_dir(struct file *, struct dir_context *,
2368 struct fscrypt_str *);
2369 int f2fs_inline_data_fiemap(struct inode *,
2370 struct fiemap_extent_info *, __u64, __u64);
2375 unsigned long f2fs_shrink_count(struct shrinker *, struct shrink_control *);
2376 unsigned long f2fs_shrink_scan(struct shrinker *, struct shrink_control *);
2377 void f2fs_join_shrinker(struct f2fs_sb_info *);
2378 void f2fs_leave_shrinker(struct f2fs_sb_info *);
2383 unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *, int);
2384 bool f2fs_init_extent_tree(struct inode *, struct f2fs_extent *);
2385 void f2fs_drop_extent_tree(struct inode *);
2386 unsigned int f2fs_destroy_extent_node(struct inode *);
2387 void f2fs_destroy_extent_tree(struct inode *);
2388 bool f2fs_lookup_extent_cache(struct inode *, pgoff_t, struct extent_info *);
2389 void f2fs_update_extent_cache(struct dnode_of_data *);
2390 void f2fs_update_extent_cache_range(struct dnode_of_data *dn,
2391 pgoff_t, block_t, unsigned int);
2392 void init_extent_cache_info(struct f2fs_sb_info *);
2393 int __init create_extent_cache(void);
2394 void destroy_extent_cache(void);
2399 static inline bool f2fs_encrypted_inode(struct inode *inode)
2401 return file_is_encrypt(inode);
2404 static inline void f2fs_set_encrypted_inode(struct inode *inode)
2406 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2407 file_set_encrypt(inode);
2411 static inline bool f2fs_bio_encrypted(struct bio *bio)
2413 return bio->bi_private != NULL;
2416 static inline int f2fs_sb_has_crypto(struct super_block *sb)
2418 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_ENCRYPT);
2421 static inline int f2fs_sb_mounted_blkzoned(struct super_block *sb)
2423 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_BLKZONED);
2426 static inline void set_opt_mode(struct f2fs_sb_info *sbi, unsigned int mt)
2428 clear_opt(sbi, ADAPTIVE);
2429 clear_opt(sbi, LFS);
2432 case F2FS_MOUNT_ADAPTIVE:
2433 set_opt(sbi, ADAPTIVE);
2435 case F2FS_MOUNT_LFS:
2441 static inline bool f2fs_may_encrypt(struct inode *inode)
2443 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2444 umode_t mode = inode->i_mode;
2446 return (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode));
2452 #ifndef CONFIG_F2FS_FS_ENCRYPTION
2453 #define fscrypt_set_d_op(i)
2454 #define fscrypt_get_ctx fscrypt_notsupp_get_ctx
2455 #define fscrypt_release_ctx fscrypt_notsupp_release_ctx
2456 #define fscrypt_encrypt_page fscrypt_notsupp_encrypt_page
2457 #define fscrypt_decrypt_page fscrypt_notsupp_decrypt_page
2458 #define fscrypt_decrypt_bio_pages fscrypt_notsupp_decrypt_bio_pages
2459 #define fscrypt_pullback_bio_page fscrypt_notsupp_pullback_bio_page
2460 #define fscrypt_restore_control_page fscrypt_notsupp_restore_control_page
2461 #define fscrypt_zeroout_range fscrypt_notsupp_zeroout_range
2462 #define fscrypt_process_policy fscrypt_notsupp_process_policy
2463 #define fscrypt_get_policy fscrypt_notsupp_get_policy
2464 #define fscrypt_has_permitted_context fscrypt_notsupp_has_permitted_context
2465 #define fscrypt_inherit_context fscrypt_notsupp_inherit_context
2466 #define fscrypt_get_encryption_info fscrypt_notsupp_get_encryption_info
2467 #define fscrypt_put_encryption_info fscrypt_notsupp_put_encryption_info
2468 #define fscrypt_setup_filename fscrypt_notsupp_setup_filename
2469 #define fscrypt_free_filename fscrypt_notsupp_free_filename
2470 #define fscrypt_fname_encrypted_size fscrypt_notsupp_fname_encrypted_size
2471 #define fscrypt_fname_alloc_buffer fscrypt_notsupp_fname_alloc_buffer
2472 #define fscrypt_fname_free_buffer fscrypt_notsupp_fname_free_buffer
2473 #define fscrypt_fname_disk_to_usr fscrypt_notsupp_fname_disk_to_usr
2474 #define fscrypt_fname_usr_to_disk fscrypt_notsupp_fname_usr_to_disk