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
52 struct f2fs_fault_info {
54 unsigned int inject_rate;
55 unsigned int inject_type;
58 extern struct f2fs_fault_info f2fs_fault;
59 extern char *fault_name[FAULT_MAX];
60 #define IS_FAULT_SET(type) (f2fs_fault.inject_type & (1 << (type)))
62 static inline bool time_to_inject(int type)
64 if (!f2fs_fault.inject_rate)
66 if (type == FAULT_KMALLOC && !IS_FAULT_SET(type))
68 else if (type == FAULT_PAGE_ALLOC && !IS_FAULT_SET(type))
70 else if (type == FAULT_ALLOC_NID && !IS_FAULT_SET(type))
72 else if (type == FAULT_ORPHAN && !IS_FAULT_SET(type))
74 else if (type == FAULT_BLOCK && !IS_FAULT_SET(type))
76 else if (type == FAULT_DIR_DEPTH && !IS_FAULT_SET(type))
78 else if (type == FAULT_EVICT_INODE && !IS_FAULT_SET(type))
81 atomic_inc(&f2fs_fault.inject_ops);
82 if (atomic_read(&f2fs_fault.inject_ops) >= f2fs_fault.inject_rate) {
83 atomic_set(&f2fs_fault.inject_ops, 0);
84 printk("%sF2FS-fs : inject %s in %pF\n",
87 __builtin_return_address(0));
97 #define F2FS_MOUNT_BG_GC 0x00000001
98 #define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
99 #define F2FS_MOUNT_DISCARD 0x00000004
100 #define F2FS_MOUNT_NOHEAP 0x00000008
101 #define F2FS_MOUNT_XATTR_USER 0x00000010
102 #define F2FS_MOUNT_POSIX_ACL 0x00000020
103 #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
104 #define F2FS_MOUNT_INLINE_XATTR 0x00000080
105 #define F2FS_MOUNT_INLINE_DATA 0x00000100
106 #define F2FS_MOUNT_INLINE_DENTRY 0x00000200
107 #define F2FS_MOUNT_FLUSH_MERGE 0x00000400
108 #define F2FS_MOUNT_NOBARRIER 0x00000800
109 #define F2FS_MOUNT_FASTBOOT 0x00001000
110 #define F2FS_MOUNT_EXTENT_CACHE 0x00002000
111 #define F2FS_MOUNT_FORCE_FG_GC 0x00004000
112 #define F2FS_MOUNT_DATA_FLUSH 0x00008000
113 #define F2FS_MOUNT_FAULT_INJECTION 0x00010000
115 #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
116 #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
117 #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
119 #define ver_after(a, b) (typecheck(unsigned long long, a) && \
120 typecheck(unsigned long long, b) && \
121 ((long long)((a) - (b)) > 0))
123 typedef u32 block_t; /*
124 * should not change u32, since it is the on-disk block
125 * address format, __le32.
129 struct f2fs_mount_info {
133 #define F2FS_FEATURE_ENCRYPT 0x0001
135 #define F2FS_HAS_FEATURE(sb, mask) \
136 ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
137 #define F2FS_SET_FEATURE(sb, mask) \
138 F2FS_SB(sb)->raw_super->feature |= cpu_to_le32(mask)
139 #define F2FS_CLEAR_FEATURE(sb, mask) \
140 F2FS_SB(sb)->raw_super->feature &= ~cpu_to_le32(mask)
143 * For checkpoint manager
158 #define DEF_BATCHED_TRIM_SECTIONS 32
159 #define BATCHED_TRIM_SEGMENTS(sbi) \
160 (SM_I(sbi)->trim_sections * (sbi)->segs_per_sec)
161 #define BATCHED_TRIM_BLOCKS(sbi) \
162 (BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg)
163 #define DEF_CP_INTERVAL 60 /* 60 secs */
164 #define DEF_IDLE_INTERVAL 120 /* 2 mins */
175 * For CP/NAT/SIT/SSA readahead
185 /* for the list of ino */
187 ORPHAN_INO, /* for orphan ino list */
188 APPEND_INO, /* for append ino list */
189 UPDATE_INO, /* for update ino list */
190 MAX_INO_ENTRY, /* max. list */
194 struct list_head list; /* list head */
195 nid_t ino; /* inode number */
198 /* for the list of inodes to be GCed */
200 struct list_head list; /* list head */
201 struct inode *inode; /* vfs inode pointer */
204 /* for the list of blockaddresses to be discarded */
205 struct discard_entry {
206 struct list_head list; /* list head */
207 block_t blkaddr; /* block address to be discarded */
208 int len; /* # of consecutive blocks of the discard */
211 /* for the list of fsync inodes, used only during recovery */
212 struct fsync_inode_entry {
213 struct list_head list; /* list head */
214 struct inode *inode; /* vfs inode pointer */
215 block_t blkaddr; /* block address locating the last fsync */
216 block_t last_dentry; /* block address locating the last dentry */
219 #define nats_in_cursum(jnl) (le16_to_cpu(jnl->n_nats))
220 #define sits_in_cursum(jnl) (le16_to_cpu(jnl->n_sits))
222 #define nat_in_journal(jnl, i) (jnl->nat_j.entries[i].ne)
223 #define nid_in_journal(jnl, i) (jnl->nat_j.entries[i].nid)
224 #define sit_in_journal(jnl, i) (jnl->sit_j.entries[i].se)
225 #define segno_in_journal(jnl, i) (jnl->sit_j.entries[i].segno)
227 #define MAX_NAT_JENTRIES(jnl) (NAT_JOURNAL_ENTRIES - nats_in_cursum(jnl))
228 #define MAX_SIT_JENTRIES(jnl) (SIT_JOURNAL_ENTRIES - sits_in_cursum(jnl))
230 static inline int update_nats_in_cursum(struct f2fs_journal *journal, int i)
232 int before = nats_in_cursum(journal);
233 journal->n_nats = cpu_to_le16(before + i);
237 static inline int update_sits_in_cursum(struct f2fs_journal *journal, int i)
239 int before = sits_in_cursum(journal);
240 journal->n_sits = cpu_to_le16(before + i);
244 static inline bool __has_cursum_space(struct f2fs_journal *journal,
247 if (type == NAT_JOURNAL)
248 return size <= MAX_NAT_JENTRIES(journal);
249 return size <= MAX_SIT_JENTRIES(journal);
255 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
256 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
257 #define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
259 #define F2FS_IOCTL_MAGIC 0xf5
260 #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
261 #define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
262 #define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
263 #define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
264 #define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
265 #define F2FS_IOC_GARBAGE_COLLECT _IO(F2FS_IOCTL_MAGIC, 6)
266 #define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7)
267 #define F2FS_IOC_DEFRAGMENT _IO(F2FS_IOCTL_MAGIC, 8)
269 #define F2FS_IOC_SET_ENCRYPTION_POLICY FS_IOC_SET_ENCRYPTION_POLICY
270 #define F2FS_IOC_GET_ENCRYPTION_POLICY FS_IOC_GET_ENCRYPTION_POLICY
271 #define F2FS_IOC_GET_ENCRYPTION_PWSALT FS_IOC_GET_ENCRYPTION_PWSALT
274 * should be same as XFS_IOC_GOINGDOWN.
275 * Flags for going down operation used by FS_IOC_GOINGDOWN
277 #define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
278 #define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
279 #define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
280 #define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
281 #define F2FS_GOING_DOWN_METAFLUSH 0x3 /* going down with meta flush */
283 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
285 * ioctl commands in 32 bit emulation
287 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
288 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
289 #define F2FS_IOC32_GETVERSION FS_IOC32_GETVERSION
292 struct f2fs_defragment {
298 * For INODE and NODE manager
300 /* for directory operations */
301 struct f2fs_dentry_ptr {
304 struct f2fs_dir_entry *dentry;
305 __u8 (*filename)[F2FS_SLOT_LEN];
309 static inline void make_dentry_ptr(struct inode *inode,
310 struct f2fs_dentry_ptr *d, void *src, int type)
315 struct f2fs_dentry_block *t = (struct f2fs_dentry_block *)src;
316 d->max = NR_DENTRY_IN_BLOCK;
317 d->bitmap = &t->dentry_bitmap;
318 d->dentry = t->dentry;
319 d->filename = t->filename;
321 struct f2fs_inline_dentry *t = (struct f2fs_inline_dentry *)src;
322 d->max = NR_INLINE_DENTRY;
323 d->bitmap = &t->dentry_bitmap;
324 d->dentry = t->dentry;
325 d->filename = t->filename;
330 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
331 * as its node offset to distinguish from index node blocks.
332 * But some bits are used to mark the node block.
334 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
337 ALLOC_NODE, /* allocate a new node page if needed */
338 LOOKUP_NODE, /* look up a node without readahead */
340 * look up a node with readahead called
345 #define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */
347 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
349 /* vector size for gang look-up from extent cache that consists of radix tree */
350 #define EXT_TREE_VEC_SIZE 64
352 /* for in-memory extent cache entry */
353 #define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
355 /* number of extent info in extent cache we try to shrink */
356 #define EXTENT_CACHE_SHRINK_NUMBER 128
359 unsigned int fofs; /* start offset in a file */
360 u32 blk; /* start block address of the extent */
361 unsigned int len; /* length of the extent */
365 struct rb_node rb_node; /* rb node located in rb-tree */
366 struct list_head list; /* node in global extent list of sbi */
367 struct extent_info ei; /* extent info */
368 struct extent_tree *et; /* extent tree pointer */
372 nid_t ino; /* inode number */
373 struct rb_root root; /* root of extent info rb-tree */
374 struct extent_node *cached_en; /* recently accessed extent node */
375 struct extent_info largest; /* largested extent info */
376 struct list_head list; /* to be used by sbi->zombie_list */
377 rwlock_t lock; /* protect extent info rb-tree */
378 atomic_t node_cnt; /* # of extent node in rb-tree*/
382 * This structure is taken from ext4_map_blocks.
384 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
386 #define F2FS_MAP_NEW (1 << BH_New)
387 #define F2FS_MAP_MAPPED (1 << BH_Mapped)
388 #define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten)
389 #define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
392 struct f2fs_map_blocks {
396 unsigned int m_flags;
397 pgoff_t *m_next_pgofs; /* point next possible non-hole pgofs */
400 /* for flag in get_data_block */
401 #define F2FS_GET_BLOCK_READ 0
402 #define F2FS_GET_BLOCK_DIO 1
403 #define F2FS_GET_BLOCK_FIEMAP 2
404 #define F2FS_GET_BLOCK_BMAP 3
405 #define F2FS_GET_BLOCK_PRE_DIO 4
406 #define F2FS_GET_BLOCK_PRE_AIO 5
409 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
411 #define FADVISE_COLD_BIT 0x01
412 #define FADVISE_LOST_PINO_BIT 0x02
413 #define FADVISE_ENCRYPT_BIT 0x04
414 #define FADVISE_ENC_NAME_BIT 0x08
416 #define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
417 #define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
418 #define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
419 #define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
420 #define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
421 #define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
422 #define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
423 #define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
424 #define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
425 #define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
426 #define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
428 #define DEF_DIR_LEVEL 0
430 struct f2fs_inode_info {
431 struct inode vfs_inode; /* serve a vfs inode */
432 unsigned long i_flags; /* keep an inode flags for ioctl */
433 unsigned char i_advise; /* use to give file attribute hints */
434 unsigned char i_dir_level; /* use for dentry level for large dir */
435 unsigned int i_current_depth; /* use only in directory structure */
436 unsigned int i_pino; /* parent inode number */
437 umode_t i_acl_mode; /* keep file acl mode temporarily */
439 /* Use below internally in f2fs*/
440 unsigned long flags; /* use to pass per-file flags */
441 struct rw_semaphore i_sem; /* protect fi info */
442 struct percpu_counter dirty_pages; /* # of dirty pages */
443 f2fs_hash_t chash; /* hash value of given file name */
444 unsigned int clevel; /* maximum level of given file name */
445 nid_t i_xattr_nid; /* node id that contains xattrs */
446 unsigned long long xattr_ver; /* cp version of xattr modification */
447 loff_t last_disk_size; /* lastly written file size */
449 struct list_head dirty_list; /* dirty list for dirs and files */
450 struct list_head gdirty_list; /* linked in global dirty list */
451 struct list_head inmem_pages; /* inmemory pages managed by f2fs */
452 struct mutex inmem_lock; /* lock for inmemory pages */
453 struct extent_tree *extent_tree; /* cached extent_tree entry */
456 static inline void get_extent_info(struct extent_info *ext,
457 struct f2fs_extent *i_ext)
459 ext->fofs = le32_to_cpu(i_ext->fofs);
460 ext->blk = le32_to_cpu(i_ext->blk);
461 ext->len = le32_to_cpu(i_ext->len);
464 static inline void set_raw_extent(struct extent_info *ext,
465 struct f2fs_extent *i_ext)
467 i_ext->fofs = cpu_to_le32(ext->fofs);
468 i_ext->blk = cpu_to_le32(ext->blk);
469 i_ext->len = cpu_to_le32(ext->len);
472 static inline void set_extent_info(struct extent_info *ei, unsigned int fofs,
473 u32 blk, unsigned int len)
480 static inline bool __is_extent_same(struct extent_info *ei1,
481 struct extent_info *ei2)
483 return (ei1->fofs == ei2->fofs && ei1->blk == ei2->blk &&
484 ei1->len == ei2->len);
487 static inline bool __is_extent_mergeable(struct extent_info *back,
488 struct extent_info *front)
490 return (back->fofs + back->len == front->fofs &&
491 back->blk + back->len == front->blk);
494 static inline bool __is_back_mergeable(struct extent_info *cur,
495 struct extent_info *back)
497 return __is_extent_mergeable(back, cur);
500 static inline bool __is_front_mergeable(struct extent_info *cur,
501 struct extent_info *front)
503 return __is_extent_mergeable(cur, front);
506 static inline void __try_update_largest_extent(struct inode *inode,
507 struct extent_tree *et, struct extent_node *en)
509 if (en->ei.len > et->largest.len) {
510 et->largest = en->ei;
511 mark_inode_dirty_sync(inode);
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; /* maximum 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 free_nid_list; /* a list for free nids */
535 spinlock_t free_nid_list_lock; /* protect free nid list */
536 unsigned int fcnt; /* the number of free node id */
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 */
597 CURSEG_DIRECT_IO, /* to use for the direct IO path */
601 struct completion wait;
602 struct llist_node llnode;
606 struct flush_cmd_control {
607 struct task_struct *f2fs_issue_flush; /* flush thread */
608 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
609 atomic_t submit_flush; /* # of issued flushes */
610 struct llist_head issue_list; /* list for command issue */
611 struct llist_node *dispatch_list; /* list for command dispatch */
614 struct f2fs_sm_info {
615 struct sit_info *sit_info; /* whole segment information */
616 struct free_segmap_info *free_info; /* free segment information */
617 struct dirty_seglist_info *dirty_info; /* dirty segment information */
618 struct curseg_info *curseg_array; /* active segment information */
620 block_t seg0_blkaddr; /* block address of 0'th segment */
621 block_t main_blkaddr; /* start block address of main area */
622 block_t ssa_blkaddr; /* start block address of SSA area */
624 unsigned int segment_count; /* total # of segments */
625 unsigned int main_segments; /* # of segments in main area */
626 unsigned int reserved_segments; /* # of reserved segments */
627 unsigned int ovp_segments; /* # of overprovision segments */
629 /* a threshold to reclaim prefree segments */
630 unsigned int rec_prefree_segments;
632 /* for small discard management */
633 struct list_head discard_list; /* 4KB discard list */
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.
671 * The below are the page types of bios used in submit_bio().
672 * The available types are:
673 * DATA User data pages. It operates as async mode.
674 * NODE Node pages. It operates as async mode.
675 * META FS metadata pages such as SIT, NAT, CP.
676 * NR_PAGE_TYPE The number of page types.
677 * META_FLUSH Make sure the previous pages are written
678 * with waiting the bio's completion
679 * ... Only can be used with META.
681 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
688 INMEM, /* the below types are used by tracepoints only. */
695 struct f2fs_io_info {
696 struct f2fs_sb_info *sbi; /* f2fs_sb_info pointer */
697 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
698 int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
699 block_t new_blkaddr; /* new block address to be written */
700 block_t old_blkaddr; /* old block address before Cow */
701 struct page *page; /* page to be written */
702 struct page *encrypted_page; /* encrypted page */
705 #define is_read_io(rw) (((rw) & 1) == READ)
706 struct f2fs_bio_info {
707 struct f2fs_sb_info *sbi; /* f2fs superblock */
708 struct bio *bio; /* bios to merge */
709 sector_t last_block_in_bio; /* last block number */
710 struct f2fs_io_info fio; /* store buffered io info. */
711 struct rw_semaphore io_rwsem; /* blocking op for bio */
715 DIR_INODE, /* for dirty dir inode */
716 FILE_INODE, /* for dirty regular/symlink inode */
717 DIRTY_META, /* for all dirtied inode metadata */
721 /* for inner inode cache management */
722 struct inode_management {
723 struct radix_tree_root ino_root; /* ino entry array */
724 spinlock_t ino_lock; /* for ino entry lock */
725 struct list_head ino_list; /* inode list head */
726 unsigned long ino_num; /* number of entries */
729 /* For s_flag in struct f2fs_sb_info */
731 SBI_IS_DIRTY, /* dirty flag for checkpoint */
732 SBI_IS_CLOSE, /* specify unmounting */
733 SBI_NEED_FSCK, /* need fsck.f2fs to fix */
734 SBI_POR_DOING, /* recovery is doing or not */
735 SBI_NEED_SB_WRITE, /* need to recover superblock */
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 int 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 struct inode *meta_inode; /* cache meta blocks */
774 struct mutex cp_mutex; /* checkpoint procedure lock */
775 struct rw_semaphore cp_rwsem; /* blocking FS operations */
776 struct rw_semaphore node_write; /* locking node writes */
777 wait_queue_head_t cp_wait;
778 unsigned long last_time[MAX_TIME]; /* to store time in jiffies */
779 long interval_time[MAX_TIME]; /* to store thresholds */
781 struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */
783 /* for orphan inode, use 0'th array */
784 unsigned int max_orphans; /* max orphan inodes */
786 /* for inode management */
787 struct list_head inode_list[NR_INODE_TYPE]; /* dirty inode list */
788 spinlock_t inode_lock[NR_INODE_TYPE]; /* for dirty inode list lock */
790 /* for extent tree cache */
791 struct radix_tree_root extent_tree_root;/* cache extent cache entries */
792 struct rw_semaphore extent_tree_lock; /* locking extent radix tree */
793 struct list_head extent_list; /* lru list for shrinker */
794 spinlock_t extent_lock; /* locking extent lru list */
795 atomic_t total_ext_tree; /* extent tree count */
796 struct list_head zombie_list; /* extent zombie tree list */
797 atomic_t total_zombie_tree; /* extent zombie tree count */
798 atomic_t total_ext_node; /* extent info count */
800 /* basic filesystem units */
801 unsigned int log_sectors_per_block; /* log2 sectors per block */
802 unsigned int log_blocksize; /* log2 block size */
803 unsigned int blocksize; /* block size */
804 unsigned int root_ino_num; /* root inode number*/
805 unsigned int node_ino_num; /* node inode number*/
806 unsigned int meta_ino_num; /* meta inode number*/
807 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
808 unsigned int blocks_per_seg; /* blocks per segment */
809 unsigned int segs_per_sec; /* segments per section */
810 unsigned int secs_per_zone; /* sections per zone */
811 unsigned int total_sections; /* total section count */
812 unsigned int total_node_count; /* total node block count */
813 unsigned int total_valid_node_count; /* valid node block count */
814 loff_t max_file_blocks; /* max block index of file */
815 int active_logs; /* # of active logs */
816 int dir_level; /* directory level */
818 block_t user_block_count; /* # of user blocks */
819 block_t total_valid_block_count; /* # of valid blocks */
820 block_t discard_blks; /* discard command candidats */
821 block_t last_valid_block_count; /* for recovery */
822 u32 s_next_generation; /* for NFS support */
823 atomic_t nr_wb_bios; /* # of writeback bios */
825 /* # of pages, see count_type */
826 struct percpu_counter nr_pages[NR_COUNT_TYPE];
827 /* # of allocated blocks */
828 struct percpu_counter alloc_valid_block_count;
830 /* valid inode count */
831 struct percpu_counter total_valid_inode_count;
833 struct f2fs_mount_info mount_opt; /* mount options */
835 /* for cleaning operations */
836 struct mutex gc_mutex; /* mutex for GC */
837 struct f2fs_gc_kthread *gc_thread; /* GC thread */
838 unsigned int cur_victim_sec; /* current victim section num */
840 /* maximum # of trials to find a victim segment for SSR and GC */
841 unsigned int max_victim_search;
844 * for stat information.
845 * one is for the LFS mode, and the other is for the SSR mode.
847 #ifdef CONFIG_F2FS_STAT_FS
848 struct f2fs_stat_info *stat_info; /* FS status information */
849 unsigned int segment_count[2]; /* # of allocated segments */
850 unsigned int block_count[2]; /* # of allocated blocks */
851 atomic_t inplace_count; /* # of inplace update */
852 atomic64_t total_hit_ext; /* # of lookup extent cache */
853 atomic64_t read_hit_rbtree; /* # of hit rbtree extent node */
854 atomic64_t read_hit_largest; /* # of hit largest extent node */
855 atomic64_t read_hit_cached; /* # of hit cached extent node */
856 atomic_t inline_xattr; /* # of inline_xattr inodes */
857 atomic_t inline_inode; /* # of inline_data inodes */
858 atomic_t inline_dir; /* # of inline_dentry inodes */
859 int bg_gc; /* background gc calls */
860 unsigned int ndirty_inode[NR_INODE_TYPE]; /* # of dirty inodes */
862 unsigned int last_victim[2]; /* last victim segment # */
863 spinlock_t stat_lock; /* lock for stat operations */
865 /* For sysfs suppport */
866 struct kobject s_kobj;
867 struct completion s_kobj_unregister;
869 /* For shrinker support */
870 struct list_head s_list;
871 struct mutex umount_mutex;
872 unsigned int shrinker_run_no;
874 /* For write statistics */
875 u64 sectors_written_start;
878 /* Reference to checksum algorithm driver via cryptoapi */
879 struct crypto_shash *s_chksum_driver;
882 /* For write statistics. Suppose sector size is 512 bytes,
883 * and the return value is in kbytes. s is of struct f2fs_sb_info.
885 #define BD_PART_WRITTEN(s) \
886 (((u64)part_stat_read(s->sb->s_bdev->bd_part, sectors[1]) - \
887 s->sectors_written_start) >> 1)
889 static inline void f2fs_update_time(struct f2fs_sb_info *sbi, int type)
891 sbi->last_time[type] = jiffies;
894 static inline bool f2fs_time_over(struct f2fs_sb_info *sbi, int type)
896 struct timespec ts = {sbi->interval_time[type], 0};
897 unsigned long interval = timespec_to_jiffies(&ts);
899 return time_after(jiffies, sbi->last_time[type] + interval);
902 static inline bool is_idle(struct f2fs_sb_info *sbi)
904 struct block_device *bdev = sbi->sb->s_bdev;
905 struct request_queue *q = bdev_get_queue(bdev);
906 struct request_list *rl = &q->root_rl;
908 if (rl->count[BLK_RW_SYNC] || rl->count[BLK_RW_ASYNC])
911 return f2fs_time_over(sbi, REQ_TIME);
917 static inline u32 f2fs_crc32(struct f2fs_sb_info *sbi, const void *address,
920 SHASH_DESC_ON_STACK(shash, sbi->s_chksum_driver);
921 u32 *ctx = (u32 *)shash_desc_ctx(shash);
924 shash->tfm = sbi->s_chksum_driver;
926 *ctx = F2FS_SUPER_MAGIC;
928 err = crypto_shash_update(shash, address, length);
934 static inline bool f2fs_crc_valid(struct f2fs_sb_info *sbi, __u32 blk_crc,
935 void *buf, size_t buf_size)
937 return f2fs_crc32(sbi, buf, buf_size) == blk_crc;
940 static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
942 return container_of(inode, struct f2fs_inode_info, vfs_inode);
945 static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
947 return sb->s_fs_info;
950 static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
952 return F2FS_SB(inode->i_sb);
955 static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
957 return F2FS_I_SB(mapping->host);
960 static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
962 return F2FS_M_SB(page->mapping);
965 static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
967 return (struct f2fs_super_block *)(sbi->raw_super);
970 static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
972 return (struct f2fs_checkpoint *)(sbi->ckpt);
975 static inline struct f2fs_node *F2FS_NODE(struct page *page)
977 return (struct f2fs_node *)page_address(page);
980 static inline struct f2fs_inode *F2FS_INODE(struct page *page)
982 return &((struct f2fs_node *)page_address(page))->i;
985 static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
987 return (struct f2fs_nm_info *)(sbi->nm_info);
990 static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
992 return (struct f2fs_sm_info *)(sbi->sm_info);
995 static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
997 return (struct sit_info *)(SM_I(sbi)->sit_info);
1000 static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
1002 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
1005 static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
1007 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
1010 static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
1012 return sbi->meta_inode->i_mapping;
1015 static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
1017 return sbi->node_inode->i_mapping;
1020 static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
1022 return sbi->s_flag & (0x01 << type);
1025 static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
1027 sbi->s_flag |= (0x01 << type);
1030 static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
1032 sbi->s_flag &= ~(0x01 << type);
1035 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
1037 return le64_to_cpu(cp->checkpoint_ver);
1040 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1042 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1043 return ckpt_flags & f;
1046 static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1048 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1050 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1053 static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1055 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1057 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1060 static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
1062 down_read(&sbi->cp_rwsem);
1065 static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
1067 up_read(&sbi->cp_rwsem);
1070 static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
1072 down_write(&sbi->cp_rwsem);
1075 static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
1077 up_write(&sbi->cp_rwsem);
1080 static inline int __get_cp_reason(struct f2fs_sb_info *sbi)
1082 int reason = CP_SYNC;
1084 if (test_opt(sbi, FASTBOOT))
1085 reason = CP_FASTBOOT;
1086 if (is_sbi_flag_set(sbi, SBI_IS_CLOSE))
1091 static inline bool __remain_node_summaries(int reason)
1093 return (reason == CP_UMOUNT || reason == CP_FASTBOOT);
1096 static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
1098 return (is_set_ckpt_flags(F2FS_CKPT(sbi), CP_UMOUNT_FLAG) ||
1099 is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FASTBOOT_FLAG));
1103 * Check whether the given nid is within node id range.
1105 static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
1107 if (unlikely(nid < F2FS_ROOT_INO(sbi)))
1109 if (unlikely(nid >= NM_I(sbi)->max_nid))
1114 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
1117 * Check whether the inode has blocks or not
1119 static inline int F2FS_HAS_BLOCKS(struct inode *inode)
1121 if (F2FS_I(inode)->i_xattr_nid)
1122 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1;
1124 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS;
1127 static inline bool f2fs_has_xattr_block(unsigned int ofs)
1129 return ofs == XATTR_NODE_OFFSET;
1132 static inline void f2fs_i_blocks_write(struct inode *, blkcnt_t, bool);
1133 static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
1134 struct inode *inode, blkcnt_t *count)
1136 block_t valid_block_count;
1138 spin_lock(&sbi->stat_lock);
1139 #ifdef CONFIG_F2FS_FAULT_INJECTION
1140 if (time_to_inject(FAULT_BLOCK)) {
1141 spin_unlock(&sbi->stat_lock);
1146 sbi->total_valid_block_count + (block_t)(*count);
1147 if (unlikely(valid_block_count > sbi->user_block_count)) {
1148 *count = sbi->user_block_count - sbi->total_valid_block_count;
1150 spin_unlock(&sbi->stat_lock);
1154 /* *count can be recalculated */
1155 f2fs_i_blocks_write(inode, *count, true);
1156 sbi->total_valid_block_count =
1157 sbi->total_valid_block_count + (block_t)(*count);
1158 spin_unlock(&sbi->stat_lock);
1160 percpu_counter_add(&sbi->alloc_valid_block_count, (*count));
1164 static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
1165 struct inode *inode,
1168 spin_lock(&sbi->stat_lock);
1169 f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
1170 f2fs_bug_on(sbi, inode->i_blocks < count);
1171 f2fs_i_blocks_write(inode, count, false);
1172 sbi->total_valid_block_count -= (block_t)count;
1173 spin_unlock(&sbi->stat_lock);
1176 static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
1178 percpu_counter_inc(&sbi->nr_pages[count_type]);
1179 set_sbi_flag(sbi, SBI_IS_DIRTY);
1182 static inline void inode_inc_dirty_pages(struct inode *inode)
1184 percpu_counter_inc(&F2FS_I(inode)->dirty_pages);
1185 inc_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
1186 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
1189 static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
1191 percpu_counter_dec(&sbi->nr_pages[count_type]);
1194 static inline void inode_dec_dirty_pages(struct inode *inode)
1196 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
1197 !S_ISLNK(inode->i_mode))
1200 percpu_counter_dec(&F2FS_I(inode)->dirty_pages);
1201 dec_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
1202 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
1205 static inline s64 get_pages(struct f2fs_sb_info *sbi, int count_type)
1207 return percpu_counter_sum_positive(&sbi->nr_pages[count_type]);
1210 static inline s64 get_dirty_pages(struct inode *inode)
1212 return percpu_counter_sum_positive(&F2FS_I(inode)->dirty_pages);
1215 static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
1217 unsigned int pages_per_sec = sbi->segs_per_sec * sbi->blocks_per_seg;
1218 unsigned int segs = (get_pages(sbi, block_type) + pages_per_sec - 1) >>
1219 sbi->log_blocks_per_seg;
1221 return segs / sbi->segs_per_sec;
1224 static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
1226 return sbi->total_valid_block_count;
1229 static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
1231 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1233 /* return NAT or SIT bitmap */
1234 if (flag == NAT_BITMAP)
1235 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
1236 else if (flag == SIT_BITMAP)
1237 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
1242 static inline block_t __cp_payload(struct f2fs_sb_info *sbi)
1244 return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
1247 static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
1249 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1252 if (__cp_payload(sbi) > 0) {
1253 if (flag == NAT_BITMAP)
1254 return &ckpt->sit_nat_version_bitmap;
1256 return (unsigned char *)ckpt + F2FS_BLKSIZE;
1258 offset = (flag == NAT_BITMAP) ?
1259 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
1260 return &ckpt->sit_nat_version_bitmap + offset;
1264 static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
1267 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1268 unsigned long long ckpt_version = cur_cp_version(ckpt);
1270 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
1273 * odd numbered checkpoint should at cp segment 0
1274 * and even segment must be at cp segment 1
1276 if (!(ckpt_version & 1))
1277 start_addr += sbi->blocks_per_seg;
1282 static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
1284 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
1287 static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
1288 struct inode *inode)
1290 block_t valid_block_count;
1291 unsigned int valid_node_count;
1293 spin_lock(&sbi->stat_lock);
1295 valid_block_count = sbi->total_valid_block_count + 1;
1296 if (unlikely(valid_block_count > sbi->user_block_count)) {
1297 spin_unlock(&sbi->stat_lock);
1301 valid_node_count = sbi->total_valid_node_count + 1;
1302 if (unlikely(valid_node_count > sbi->total_node_count)) {
1303 spin_unlock(&sbi->stat_lock);
1308 f2fs_i_blocks_write(inode, 1, true);
1310 sbi->total_valid_node_count++;
1311 sbi->total_valid_block_count++;
1312 spin_unlock(&sbi->stat_lock);
1314 percpu_counter_inc(&sbi->alloc_valid_block_count);
1318 static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
1319 struct inode *inode)
1321 spin_lock(&sbi->stat_lock);
1323 f2fs_bug_on(sbi, !sbi->total_valid_block_count);
1324 f2fs_bug_on(sbi, !sbi->total_valid_node_count);
1325 f2fs_bug_on(sbi, !inode->i_blocks);
1327 f2fs_i_blocks_write(inode, 1, false);
1328 sbi->total_valid_node_count--;
1329 sbi->total_valid_block_count--;
1331 spin_unlock(&sbi->stat_lock);
1334 static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
1336 return sbi->total_valid_node_count;
1339 static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
1341 percpu_counter_inc(&sbi->total_valid_inode_count);
1344 static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
1346 percpu_counter_dec(&sbi->total_valid_inode_count);
1349 static inline s64 valid_inode_count(struct f2fs_sb_info *sbi)
1351 return percpu_counter_sum_positive(&sbi->total_valid_inode_count);
1354 static inline struct page *f2fs_grab_cache_page(struct address_space *mapping,
1355 pgoff_t index, bool for_write)
1357 #ifdef CONFIG_F2FS_FAULT_INJECTION
1358 struct page *page = find_lock_page(mapping, index);
1362 if (time_to_inject(FAULT_PAGE_ALLOC))
1366 return grab_cache_page(mapping, index);
1367 return grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS);
1370 static inline void f2fs_copy_page(struct page *src, struct page *dst)
1372 char *src_kaddr = kmap(src);
1373 char *dst_kaddr = kmap(dst);
1375 memcpy(dst_kaddr, src_kaddr, PAGE_SIZE);
1380 static inline void f2fs_put_page(struct page *page, int unlock)
1386 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
1392 static inline void f2fs_put_dnode(struct dnode_of_data *dn)
1395 f2fs_put_page(dn->node_page, 1);
1396 if (dn->inode_page && dn->node_page != dn->inode_page)
1397 f2fs_put_page(dn->inode_page, 0);
1398 dn->node_page = NULL;
1399 dn->inode_page = NULL;
1402 static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
1405 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
1408 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
1413 entry = kmem_cache_alloc(cachep, flags);
1415 entry = kmem_cache_alloc(cachep, flags | __GFP_NOFAIL);
1419 static inline struct bio *f2fs_bio_alloc(int npages)
1423 /* No failure on bio allocation */
1424 bio = bio_alloc(GFP_NOIO, npages);
1426 bio = bio_alloc(GFP_NOIO | __GFP_NOFAIL, npages);
1430 static inline void f2fs_radix_tree_insert(struct radix_tree_root *root,
1431 unsigned long index, void *item)
1433 while (radix_tree_insert(root, index, item))
1437 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1439 static inline bool IS_INODE(struct page *page)
1441 struct f2fs_node *p = F2FS_NODE(page);
1442 return RAW_IS_INODE(p);
1445 static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
1447 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
1450 static inline block_t datablock_addr(struct page *node_page,
1451 unsigned int offset)
1453 struct f2fs_node *raw_node;
1455 raw_node = F2FS_NODE(node_page);
1456 addr_array = blkaddr_in_node(raw_node);
1457 return le32_to_cpu(addr_array[offset]);
1460 static inline int f2fs_test_bit(unsigned int nr, char *addr)
1465 mask = 1 << (7 - (nr & 0x07));
1466 return mask & *addr;
1469 static inline void f2fs_set_bit(unsigned int nr, char *addr)
1474 mask = 1 << (7 - (nr & 0x07));
1478 static inline void f2fs_clear_bit(unsigned int nr, char *addr)
1483 mask = 1 << (7 - (nr & 0x07));
1487 static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
1493 mask = 1 << (7 - (nr & 0x07));
1499 static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
1505 mask = 1 << (7 - (nr & 0x07));
1511 static inline void f2fs_change_bit(unsigned int nr, char *addr)
1516 mask = 1 << (7 - (nr & 0x07));
1520 /* used for f2fs_inode_info->flags */
1522 FI_NEW_INODE, /* indicate newly allocated inode */
1523 FI_DIRTY_INODE, /* indicate inode is dirty or not */
1524 FI_AUTO_RECOVER, /* indicate inode is recoverable */
1525 FI_DIRTY_DIR, /* indicate directory has dirty pages */
1526 FI_INC_LINK, /* need to increment i_nlink */
1527 FI_ACL_MODE, /* indicate acl mode */
1528 FI_NO_ALLOC, /* should not allocate any blocks */
1529 FI_FREE_NID, /* free allocated nide */
1530 FI_NO_EXTENT, /* not to use the extent cache */
1531 FI_INLINE_XATTR, /* used for inline xattr */
1532 FI_INLINE_DATA, /* used for inline data*/
1533 FI_INLINE_DENTRY, /* used for inline dentry */
1534 FI_APPEND_WRITE, /* inode has appended data */
1535 FI_UPDATE_WRITE, /* inode has in-place-update data */
1536 FI_NEED_IPU, /* used for ipu per file */
1537 FI_ATOMIC_FILE, /* indicate atomic file */
1538 FI_VOLATILE_FILE, /* indicate volatile file */
1539 FI_FIRST_BLOCK_WRITTEN, /* indicate #0 data block was written */
1540 FI_DROP_CACHE, /* drop dirty page cache */
1541 FI_DATA_EXIST, /* indicate data exists */
1542 FI_INLINE_DOTS, /* indicate inline dot dentries */
1543 FI_DO_DEFRAG, /* indicate defragment is running */
1544 FI_DIRTY_FILE, /* indicate regular/symlink has dirty pages */
1547 static inline void __mark_inode_dirty_flag(struct inode *inode,
1551 case FI_INLINE_XATTR:
1552 case FI_INLINE_DATA:
1553 case FI_INLINE_DENTRY:
1557 case FI_INLINE_DOTS:
1558 mark_inode_dirty_sync(inode);
1562 static inline void set_inode_flag(struct inode *inode, int flag)
1564 if (!test_bit(flag, &F2FS_I(inode)->flags))
1565 set_bit(flag, &F2FS_I(inode)->flags);
1566 __mark_inode_dirty_flag(inode, flag, true);
1569 static inline int is_inode_flag_set(struct inode *inode, int flag)
1571 return test_bit(flag, &F2FS_I(inode)->flags);
1574 static inline void clear_inode_flag(struct inode *inode, int flag)
1576 if (test_bit(flag, &F2FS_I(inode)->flags))
1577 clear_bit(flag, &F2FS_I(inode)->flags);
1578 __mark_inode_dirty_flag(inode, flag, false);
1581 static inline void set_acl_inode(struct inode *inode, umode_t mode)
1583 F2FS_I(inode)->i_acl_mode = mode;
1584 set_inode_flag(inode, FI_ACL_MODE);
1585 mark_inode_dirty_sync(inode);
1588 static inline void f2fs_i_links_write(struct inode *inode, bool inc)
1594 mark_inode_dirty_sync(inode);
1597 static inline void f2fs_i_blocks_write(struct inode *inode,
1598 blkcnt_t diff, bool add)
1600 bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
1601 bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);
1603 inode->i_blocks = add ? inode->i_blocks + diff :
1604 inode->i_blocks - diff;
1605 mark_inode_dirty_sync(inode);
1606 if (clean || recover)
1607 set_inode_flag(inode, FI_AUTO_RECOVER);
1610 static inline void f2fs_i_size_write(struct inode *inode, loff_t i_size)
1612 bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
1613 bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);
1615 if (i_size_read(inode) == i_size)
1618 i_size_write(inode, i_size);
1619 mark_inode_dirty_sync(inode);
1620 if (clean || recover)
1621 set_inode_flag(inode, FI_AUTO_RECOVER);
1624 static inline bool f2fs_skip_inode_update(struct inode *inode)
1626 if (!is_inode_flag_set(inode, FI_AUTO_RECOVER))
1628 return F2FS_I(inode)->last_disk_size == i_size_read(inode);
1631 static inline void f2fs_i_depth_write(struct inode *inode, unsigned int depth)
1633 F2FS_I(inode)->i_current_depth = depth;
1634 mark_inode_dirty_sync(inode);
1637 static inline void f2fs_i_xnid_write(struct inode *inode, nid_t xnid)
1639 F2FS_I(inode)->i_xattr_nid = xnid;
1640 mark_inode_dirty_sync(inode);
1643 static inline void f2fs_i_pino_write(struct inode *inode, nid_t pino)
1645 F2FS_I(inode)->i_pino = pino;
1646 mark_inode_dirty_sync(inode);
1649 static inline void get_inline_info(struct inode *inode, struct f2fs_inode *ri)
1651 struct f2fs_inode_info *fi = F2FS_I(inode);
1653 if (ri->i_inline & F2FS_INLINE_XATTR)
1654 set_bit(FI_INLINE_XATTR, &fi->flags);
1655 if (ri->i_inline & F2FS_INLINE_DATA)
1656 set_bit(FI_INLINE_DATA, &fi->flags);
1657 if (ri->i_inline & F2FS_INLINE_DENTRY)
1658 set_bit(FI_INLINE_DENTRY, &fi->flags);
1659 if (ri->i_inline & F2FS_DATA_EXIST)
1660 set_bit(FI_DATA_EXIST, &fi->flags);
1661 if (ri->i_inline & F2FS_INLINE_DOTS)
1662 set_bit(FI_INLINE_DOTS, &fi->flags);
1665 static inline void set_raw_inline(struct inode *inode, struct f2fs_inode *ri)
1669 if (is_inode_flag_set(inode, FI_INLINE_XATTR))
1670 ri->i_inline |= F2FS_INLINE_XATTR;
1671 if (is_inode_flag_set(inode, FI_INLINE_DATA))
1672 ri->i_inline |= F2FS_INLINE_DATA;
1673 if (is_inode_flag_set(inode, FI_INLINE_DENTRY))
1674 ri->i_inline |= F2FS_INLINE_DENTRY;
1675 if (is_inode_flag_set(inode, FI_DATA_EXIST))
1676 ri->i_inline |= F2FS_DATA_EXIST;
1677 if (is_inode_flag_set(inode, FI_INLINE_DOTS))
1678 ri->i_inline |= F2FS_INLINE_DOTS;
1681 static inline int f2fs_has_inline_xattr(struct inode *inode)
1683 return is_inode_flag_set(inode, FI_INLINE_XATTR);
1686 static inline unsigned int addrs_per_inode(struct inode *inode)
1688 if (f2fs_has_inline_xattr(inode))
1689 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
1690 return DEF_ADDRS_PER_INODE;
1693 static inline void *inline_xattr_addr(struct page *page)
1695 struct f2fs_inode *ri = F2FS_INODE(page);
1696 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
1697 F2FS_INLINE_XATTR_ADDRS]);
1700 static inline int inline_xattr_size(struct inode *inode)
1702 if (f2fs_has_inline_xattr(inode))
1703 return F2FS_INLINE_XATTR_ADDRS << 2;
1708 static inline int f2fs_has_inline_data(struct inode *inode)
1710 return is_inode_flag_set(inode, FI_INLINE_DATA);
1713 static inline void f2fs_clear_inline_inode(struct inode *inode)
1715 clear_inode_flag(inode, FI_INLINE_DATA);
1716 clear_inode_flag(inode, FI_DATA_EXIST);
1719 static inline int f2fs_exist_data(struct inode *inode)
1721 return is_inode_flag_set(inode, FI_DATA_EXIST);
1724 static inline int f2fs_has_inline_dots(struct inode *inode)
1726 return is_inode_flag_set(inode, FI_INLINE_DOTS);
1729 static inline bool f2fs_is_atomic_file(struct inode *inode)
1731 return is_inode_flag_set(inode, FI_ATOMIC_FILE);
1734 static inline bool f2fs_is_volatile_file(struct inode *inode)
1736 return is_inode_flag_set(inode, FI_VOLATILE_FILE);
1739 static inline bool f2fs_is_first_block_written(struct inode *inode)
1741 return is_inode_flag_set(inode, FI_FIRST_BLOCK_WRITTEN);
1744 static inline bool f2fs_is_drop_cache(struct inode *inode)
1746 return is_inode_flag_set(inode, FI_DROP_CACHE);
1749 static inline void *inline_data_addr(struct page *page)
1751 struct f2fs_inode *ri = F2FS_INODE(page);
1752 return (void *)&(ri->i_addr[1]);
1755 static inline int f2fs_has_inline_dentry(struct inode *inode)
1757 return is_inode_flag_set(inode, FI_INLINE_DENTRY);
1760 static inline void f2fs_dentry_kunmap(struct inode *dir, struct page *page)
1762 if (!f2fs_has_inline_dentry(dir))
1766 static inline int is_file(struct inode *inode, int type)
1768 return F2FS_I(inode)->i_advise & type;
1771 static inline void set_file(struct inode *inode, int type)
1773 F2FS_I(inode)->i_advise |= type;
1774 mark_inode_dirty_sync(inode);
1777 static inline void clear_file(struct inode *inode, int type)
1779 F2FS_I(inode)->i_advise &= ~type;
1780 mark_inode_dirty_sync(inode);
1783 static inline int f2fs_readonly(struct super_block *sb)
1785 return sb->s_flags & MS_RDONLY;
1788 static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
1790 return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1793 static inline bool is_dot_dotdot(const struct qstr *str)
1795 if (str->len == 1 && str->name[0] == '.')
1798 if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.')
1804 static inline bool f2fs_may_extent_tree(struct inode *inode)
1806 if (!test_opt(F2FS_I_SB(inode), EXTENT_CACHE) ||
1807 is_inode_flag_set(inode, FI_NO_EXTENT))
1810 return S_ISREG(inode->i_mode);
1813 static inline void *f2fs_kmalloc(size_t size, gfp_t flags)
1815 #ifdef CONFIG_F2FS_FAULT_INJECTION
1816 if (time_to_inject(FAULT_KMALLOC))
1819 return kmalloc(size, flags);
1822 static inline void *f2fs_kvmalloc(size_t size, gfp_t flags)
1826 ret = kmalloc(size, flags | __GFP_NOWARN);
1828 ret = __vmalloc(size, flags, PAGE_KERNEL);
1832 static inline void *f2fs_kvzalloc(size_t size, gfp_t flags)
1836 ret = kzalloc(size, flags | __GFP_NOWARN);
1838 ret = __vmalloc(size, flags | __GFP_ZERO, PAGE_KERNEL);
1842 #define get_inode_mode(i) \
1843 ((is_inode_flag_set(i, FI_ACL_MODE)) ? \
1844 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1846 /* get offset of first page in next direct node */
1847 #define PGOFS_OF_NEXT_DNODE(pgofs, inode) \
1848 ((pgofs < ADDRS_PER_INODE(inode)) ? ADDRS_PER_INODE(inode) : \
1849 (pgofs - ADDRS_PER_INODE(inode) + ADDRS_PER_BLOCK) / \
1850 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(inode))
1855 int f2fs_sync_file(struct file *, loff_t, loff_t, int);
1856 void truncate_data_blocks(struct dnode_of_data *);
1857 int truncate_blocks(struct inode *, u64, bool);
1858 int f2fs_truncate(struct inode *);
1859 int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
1860 int f2fs_setattr(struct dentry *, struct iattr *);
1861 int truncate_hole(struct inode *, pgoff_t, pgoff_t);
1862 int truncate_data_blocks_range(struct dnode_of_data *, int);
1863 long f2fs_ioctl(struct file *, unsigned int, unsigned long);
1864 long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long);
1869 void f2fs_set_inode_flags(struct inode *);
1870 struct inode *f2fs_iget(struct super_block *, unsigned long);
1871 int try_to_free_nats(struct f2fs_sb_info *, int);
1872 int update_inode(struct inode *, struct page *);
1873 int update_inode_page(struct inode *);
1874 int f2fs_write_inode(struct inode *, struct writeback_control *);
1875 void f2fs_evict_inode(struct inode *);
1876 void handle_failed_inode(struct inode *);
1881 struct dentry *f2fs_get_parent(struct dentry *child);
1886 extern unsigned char f2fs_filetype_table[F2FS_FT_MAX];
1887 void set_de_type(struct f2fs_dir_entry *, umode_t);
1888 unsigned char get_de_type(struct f2fs_dir_entry *);
1889 struct f2fs_dir_entry *find_target_dentry(struct fscrypt_name *,
1890 f2fs_hash_t, int *, struct f2fs_dentry_ptr *);
1891 bool f2fs_fill_dentries(struct dir_context *, struct f2fs_dentry_ptr *,
1892 unsigned int, struct fscrypt_str *);
1893 void do_make_empty_dir(struct inode *, struct inode *,
1894 struct f2fs_dentry_ptr *);
1895 struct page *init_inode_metadata(struct inode *, struct inode *,
1896 const struct qstr *, struct page *);
1897 void update_parent_metadata(struct inode *, struct inode *, unsigned int);
1898 int room_for_filename(const void *, int, int);
1899 void f2fs_drop_nlink(struct inode *, struct inode *);
1900 struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *,
1902 struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
1903 ino_t f2fs_inode_by_name(struct inode *, struct qstr *);
1904 void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
1905 struct page *, struct inode *);
1906 int update_dent_inode(struct inode *, struct inode *, const struct qstr *);
1907 void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *,
1908 const struct qstr *, f2fs_hash_t , unsigned int);
1909 int f2fs_add_regular_entry(struct inode *, const struct qstr *,
1910 struct inode *, nid_t, umode_t);
1911 int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *, nid_t,
1913 void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *,
1915 int f2fs_do_tmpfile(struct inode *, struct inode *);
1916 bool f2fs_empty_dir(struct inode *);
1918 static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
1920 return __f2fs_add_link(d_inode(dentry->d_parent), &dentry->d_name,
1921 inode, inode->i_ino, inode->i_mode);
1927 void f2fs_inode_synced(struct inode *);
1928 int f2fs_commit_super(struct f2fs_sb_info *, bool);
1929 int f2fs_sync_fs(struct super_block *, int);
1930 extern __printf(3, 4)
1931 void f2fs_msg(struct super_block *, const char *, const char *, ...);
1932 int sanity_check_ckpt(struct f2fs_sb_info *sbi);
1937 f2fs_hash_t f2fs_dentry_hash(const struct qstr *);
1942 struct dnode_of_data;
1945 bool available_free_memory(struct f2fs_sb_info *, int);
1946 int need_dentry_mark(struct f2fs_sb_info *, nid_t);
1947 bool is_checkpointed_node(struct f2fs_sb_info *, nid_t);
1948 bool need_inode_block_update(struct f2fs_sb_info *, nid_t);
1949 void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
1950 pgoff_t get_next_page_offset(struct dnode_of_data *, pgoff_t);
1951 int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);
1952 int truncate_inode_blocks(struct inode *, pgoff_t);
1953 int truncate_xattr_node(struct inode *, struct page *);
1954 int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t);
1955 int remove_inode_page(struct inode *);
1956 struct page *new_inode_page(struct inode *);
1957 struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *);
1958 void ra_node_page(struct f2fs_sb_info *, nid_t);
1959 struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
1960 struct page *get_node_page_ra(struct page *, int);
1961 void move_node_page(struct page *, int);
1962 int fsync_node_pages(struct f2fs_sb_info *, struct inode *,
1963 struct writeback_control *, bool);
1964 int sync_node_pages(struct f2fs_sb_info *, struct writeback_control *);
1965 bool alloc_nid(struct f2fs_sb_info *, nid_t *);
1966 void alloc_nid_done(struct f2fs_sb_info *, nid_t);
1967 void alloc_nid_failed(struct f2fs_sb_info *, nid_t);
1968 int try_to_free_nids(struct f2fs_sb_info *, int);
1969 void recover_inline_xattr(struct inode *, struct page *);
1970 void recover_xattr_data(struct inode *, struct page *, block_t);
1971 int recover_inode_page(struct f2fs_sb_info *, struct page *);
1972 int restore_node_summary(struct f2fs_sb_info *, unsigned int,
1973 struct f2fs_summary_block *);
1974 void flush_nat_entries(struct f2fs_sb_info *);
1975 int build_node_manager(struct f2fs_sb_info *);
1976 void destroy_node_manager(struct f2fs_sb_info *);
1977 int __init create_node_manager_caches(void);
1978 void destroy_node_manager_caches(void);
1983 void register_inmem_page(struct inode *, struct page *);
1984 void drop_inmem_pages(struct inode *);
1985 int commit_inmem_pages(struct inode *);
1986 void f2fs_balance_fs(struct f2fs_sb_info *, bool);
1987 void f2fs_balance_fs_bg(struct f2fs_sb_info *);
1988 int f2fs_issue_flush(struct f2fs_sb_info *);
1989 int create_flush_cmd_control(struct f2fs_sb_info *);
1990 void destroy_flush_cmd_control(struct f2fs_sb_info *);
1991 void invalidate_blocks(struct f2fs_sb_info *, block_t);
1992 bool is_checkpointed_data(struct f2fs_sb_info *, block_t);
1993 void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t);
1994 void clear_prefree_segments(struct f2fs_sb_info *, struct cp_control *);
1995 void release_discard_addrs(struct f2fs_sb_info *);
1996 bool discard_next_dnode(struct f2fs_sb_info *, block_t);
1997 int npages_for_summary_flush(struct f2fs_sb_info *, bool);
1998 void allocate_new_segments(struct f2fs_sb_info *);
1999 int f2fs_trim_fs(struct f2fs_sb_info *, struct fstrim_range *);
2000 struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
2001 void update_meta_page(struct f2fs_sb_info *, void *, block_t);
2002 void write_meta_page(struct f2fs_sb_info *, struct page *);
2003 void write_node_page(unsigned int, struct f2fs_io_info *);
2004 void write_data_page(struct dnode_of_data *, struct f2fs_io_info *);
2005 void rewrite_data_page(struct f2fs_io_info *);
2006 void __f2fs_replace_block(struct f2fs_sb_info *, struct f2fs_summary *,
2007 block_t, block_t, bool, bool);
2008 void f2fs_replace_block(struct f2fs_sb_info *, struct dnode_of_data *,
2009 block_t, block_t, unsigned char, bool, bool);
2010 void allocate_data_block(struct f2fs_sb_info *, struct page *,
2011 block_t, block_t *, struct f2fs_summary *, int);
2012 void f2fs_wait_on_page_writeback(struct page *, enum page_type, bool);
2013 void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info *, block_t);
2014 void write_data_summaries(struct f2fs_sb_info *, block_t);
2015 void write_node_summaries(struct f2fs_sb_info *, block_t);
2016 int lookup_journal_in_cursum(struct f2fs_journal *, int, unsigned int, int);
2017 void flush_sit_entries(struct f2fs_sb_info *, struct cp_control *);
2018 int build_segment_manager(struct f2fs_sb_info *);
2019 void destroy_segment_manager(struct f2fs_sb_info *);
2020 int __init create_segment_manager_caches(void);
2021 void destroy_segment_manager_caches(void);
2026 void f2fs_stop_checkpoint(struct f2fs_sb_info *, bool);
2027 struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
2028 struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
2029 struct page *get_tmp_page(struct f2fs_sb_info *, pgoff_t);
2030 bool is_valid_blkaddr(struct f2fs_sb_info *, block_t, int);
2031 int ra_meta_pages(struct f2fs_sb_info *, block_t, int, int, bool);
2032 void ra_meta_pages_cond(struct f2fs_sb_info *, pgoff_t);
2033 long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
2034 void add_ino_entry(struct f2fs_sb_info *, nid_t, int type);
2035 void remove_ino_entry(struct f2fs_sb_info *, nid_t, int type);
2036 void release_ino_entry(struct f2fs_sb_info *, bool);
2037 bool exist_written_data(struct f2fs_sb_info *, nid_t, int);
2038 int f2fs_sync_inode_meta(struct f2fs_sb_info *);
2039 int acquire_orphan_inode(struct f2fs_sb_info *);
2040 void release_orphan_inode(struct f2fs_sb_info *);
2041 void add_orphan_inode(struct f2fs_sb_info *, nid_t);
2042 void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
2043 int recover_orphan_inodes(struct f2fs_sb_info *);
2044 int get_valid_checkpoint(struct f2fs_sb_info *);
2045 void update_dirty_page(struct inode *, struct page *);
2046 void remove_dirty_inode(struct inode *);
2047 int sync_dirty_inodes(struct f2fs_sb_info *, enum inode_type);
2048 int write_checkpoint(struct f2fs_sb_info *, struct cp_control *);
2049 void init_ino_entry_info(struct f2fs_sb_info *);
2050 int __init create_checkpoint_caches(void);
2051 void destroy_checkpoint_caches(void);
2056 void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int);
2057 void f2fs_submit_merged_bio_cond(struct f2fs_sb_info *, struct inode *,
2058 struct page *, nid_t, enum page_type, int);
2059 void f2fs_flush_merged_bios(struct f2fs_sb_info *);
2060 int f2fs_submit_page_bio(struct f2fs_io_info *);
2061 void f2fs_submit_page_mbio(struct f2fs_io_info *);
2062 void set_data_blkaddr(struct dnode_of_data *);
2063 void f2fs_update_data_blkaddr(struct dnode_of_data *, block_t);
2064 int reserve_new_blocks(struct dnode_of_data *, blkcnt_t);
2065 int reserve_new_block(struct dnode_of_data *);
2066 int f2fs_get_block(struct dnode_of_data *, pgoff_t);
2067 ssize_t f2fs_preallocate_blocks(struct kiocb *, struct iov_iter *);
2068 int f2fs_reserve_block(struct dnode_of_data *, pgoff_t);
2069 struct page *get_read_data_page(struct inode *, pgoff_t, int, bool);
2070 struct page *find_data_page(struct inode *, pgoff_t);
2071 struct page *get_lock_data_page(struct inode *, pgoff_t, bool);
2072 struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
2073 int do_write_data_page(struct f2fs_io_info *);
2074 int f2fs_map_blocks(struct inode *, struct f2fs_map_blocks *, int, int);
2075 int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64);
2076 void f2fs_invalidate_page(struct page *, unsigned int, unsigned int);
2077 int f2fs_release_page(struct page *, gfp_t);
2082 int start_gc_thread(struct f2fs_sb_info *);
2083 void stop_gc_thread(struct f2fs_sb_info *);
2084 block_t start_bidx_of_node(unsigned int, struct inode *);
2085 int f2fs_gc(struct f2fs_sb_info *, bool);
2086 void build_gc_manager(struct f2fs_sb_info *);
2091 int recover_fsync_data(struct f2fs_sb_info *, bool);
2092 bool space_for_roll_forward(struct f2fs_sb_info *);
2097 #ifdef CONFIG_F2FS_STAT_FS
2098 struct f2fs_stat_info {
2099 struct list_head stat_list;
2100 struct f2fs_sb_info *sbi;
2101 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
2102 int main_area_segs, main_area_sections, main_area_zones;
2103 unsigned long long hit_largest, hit_cached, hit_rbtree;
2104 unsigned long long hit_total, total_ext;
2105 int ext_tree, zombie_tree, ext_node;
2106 s64 ndirty_node, ndirty_dent, ndirty_meta, ndirty_data, inmem_pages;
2107 unsigned int ndirty_dirs, ndirty_files, ndirty_all;
2108 int nats, dirty_nats, sits, dirty_sits, fnids;
2109 int total_count, utilization;
2111 int inline_xattr, inline_inode, inline_dir, orphans;
2112 unsigned int valid_count, valid_node_count, valid_inode_count;
2113 unsigned int bimodal, avg_vblocks;
2114 int util_free, util_valid, util_invalid;
2115 int rsvd_segs, overp_segs;
2116 int dirty_count, node_pages, meta_pages;
2117 int prefree_count, call_count, cp_count, bg_cp_count;
2118 int tot_segs, node_segs, data_segs, free_segs, free_secs;
2119 int bg_node_segs, bg_data_segs;
2120 int tot_blks, data_blks, node_blks;
2121 int bg_data_blks, bg_node_blks;
2122 int curseg[NR_CURSEG_TYPE];
2123 int cursec[NR_CURSEG_TYPE];
2124 int curzone[NR_CURSEG_TYPE];
2126 unsigned int segment_count[2];
2127 unsigned int block_count[2];
2128 unsigned int inplace_count;
2129 unsigned long long base_mem, cache_mem, page_mem;
2132 static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
2134 return (struct f2fs_stat_info *)sbi->stat_info;
2137 #define stat_inc_cp_count(si) ((si)->cp_count++)
2138 #define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++)
2139 #define stat_inc_call_count(si) ((si)->call_count++)
2140 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
2141 #define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++)
2142 #define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--)
2143 #define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext))
2144 #define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree))
2145 #define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest))
2146 #define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached))
2147 #define stat_inc_inline_xattr(inode) \
2149 if (f2fs_has_inline_xattr(inode)) \
2150 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
2152 #define stat_dec_inline_xattr(inode) \
2154 if (f2fs_has_inline_xattr(inode)) \
2155 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
2157 #define stat_inc_inline_inode(inode) \
2159 if (f2fs_has_inline_data(inode)) \
2160 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
2162 #define stat_dec_inline_inode(inode) \
2164 if (f2fs_has_inline_data(inode)) \
2165 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
2167 #define stat_inc_inline_dir(inode) \
2169 if (f2fs_has_inline_dentry(inode)) \
2170 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
2172 #define stat_dec_inline_dir(inode) \
2174 if (f2fs_has_inline_dentry(inode)) \
2175 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
2177 #define stat_inc_seg_type(sbi, curseg) \
2178 ((sbi)->segment_count[(curseg)->alloc_type]++)
2179 #define stat_inc_block_count(sbi, curseg) \
2180 ((sbi)->block_count[(curseg)->alloc_type]++)
2181 #define stat_inc_inplace_blocks(sbi) \
2182 (atomic_inc(&(sbi)->inplace_count))
2183 #define stat_inc_seg_count(sbi, type, gc_type) \
2185 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2187 if (type == SUM_TYPE_DATA) { \
2189 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
2192 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
2196 #define stat_inc_tot_blk_count(si, blks) \
2197 (si->tot_blks += (blks))
2199 #define stat_inc_data_blk_count(sbi, blks, gc_type) \
2201 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2202 stat_inc_tot_blk_count(si, blks); \
2203 si->data_blks += (blks); \
2204 si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \
2207 #define stat_inc_node_blk_count(sbi, blks, gc_type) \
2209 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2210 stat_inc_tot_blk_count(si, blks); \
2211 si->node_blks += (blks); \
2212 si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \
2215 int f2fs_build_stats(struct f2fs_sb_info *);
2216 void f2fs_destroy_stats(struct f2fs_sb_info *);
2217 int __init f2fs_create_root_stats(void);
2218 void f2fs_destroy_root_stats(void);
2220 #define stat_inc_cp_count(si)
2221 #define stat_inc_bg_cp_count(si)
2222 #define stat_inc_call_count(si)
2223 #define stat_inc_bggc_count(si)
2224 #define stat_inc_dirty_inode(sbi, type)
2225 #define stat_dec_dirty_inode(sbi, type)
2226 #define stat_inc_total_hit(sb)
2227 #define stat_inc_rbtree_node_hit(sb)
2228 #define stat_inc_largest_node_hit(sbi)
2229 #define stat_inc_cached_node_hit(sbi)
2230 #define stat_inc_inline_xattr(inode)
2231 #define stat_dec_inline_xattr(inode)
2232 #define stat_inc_inline_inode(inode)
2233 #define stat_dec_inline_inode(inode)
2234 #define stat_inc_inline_dir(inode)
2235 #define stat_dec_inline_dir(inode)
2236 #define stat_inc_seg_type(sbi, curseg)
2237 #define stat_inc_block_count(sbi, curseg)
2238 #define stat_inc_inplace_blocks(sbi)
2239 #define stat_inc_seg_count(sbi, type, gc_type)
2240 #define stat_inc_tot_blk_count(si, blks)
2241 #define stat_inc_data_blk_count(sbi, blks, gc_type)
2242 #define stat_inc_node_blk_count(sbi, blks, gc_type)
2244 static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
2245 static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
2246 static inline int __init f2fs_create_root_stats(void) { return 0; }
2247 static inline void f2fs_destroy_root_stats(void) { }
2250 extern const struct file_operations f2fs_dir_operations;
2251 extern const struct file_operations f2fs_file_operations;
2252 extern const struct inode_operations f2fs_file_inode_operations;
2253 extern const struct address_space_operations f2fs_dblock_aops;
2254 extern const struct address_space_operations f2fs_node_aops;
2255 extern const struct address_space_operations f2fs_meta_aops;
2256 extern const struct inode_operations f2fs_dir_inode_operations;
2257 extern const struct inode_operations f2fs_symlink_inode_operations;
2258 extern const struct inode_operations f2fs_encrypted_symlink_inode_operations;
2259 extern const struct inode_operations f2fs_special_inode_operations;
2260 extern struct kmem_cache *inode_entry_slab;
2265 bool f2fs_may_inline_data(struct inode *);
2266 bool f2fs_may_inline_dentry(struct inode *);
2267 void read_inline_data(struct page *, struct page *);
2268 bool truncate_inline_inode(struct page *, u64);
2269 int f2fs_read_inline_data(struct inode *, struct page *);
2270 int f2fs_convert_inline_page(struct dnode_of_data *, struct page *);
2271 int f2fs_convert_inline_inode(struct inode *);
2272 int f2fs_write_inline_data(struct inode *, struct page *);
2273 bool recover_inline_data(struct inode *, struct page *);
2274 struct f2fs_dir_entry *find_in_inline_dir(struct inode *,
2275 struct fscrypt_name *, struct page **);
2276 struct f2fs_dir_entry *f2fs_parent_inline_dir(struct inode *, struct page **);
2277 int make_empty_inline_dir(struct inode *inode, struct inode *, struct page *);
2278 int f2fs_add_inline_entry(struct inode *, const struct qstr *, struct inode *,
2280 void f2fs_delete_inline_entry(struct f2fs_dir_entry *, struct page *,
2281 struct inode *, struct inode *);
2282 bool f2fs_empty_inline_dir(struct inode *);
2283 int f2fs_read_inline_dir(struct file *, struct dir_context *,
2284 struct fscrypt_str *);
2285 int f2fs_inline_data_fiemap(struct inode *,
2286 struct fiemap_extent_info *, __u64, __u64);
2291 unsigned long f2fs_shrink_count(struct shrinker *, struct shrink_control *);
2292 unsigned long f2fs_shrink_scan(struct shrinker *, struct shrink_control *);
2293 void f2fs_join_shrinker(struct f2fs_sb_info *);
2294 void f2fs_leave_shrinker(struct f2fs_sb_info *);
2299 unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *, int);
2300 bool f2fs_init_extent_tree(struct inode *, struct f2fs_extent *);
2301 unsigned int f2fs_destroy_extent_node(struct inode *);
2302 void f2fs_destroy_extent_tree(struct inode *);
2303 bool f2fs_lookup_extent_cache(struct inode *, pgoff_t, struct extent_info *);
2304 void f2fs_update_extent_cache(struct dnode_of_data *);
2305 void f2fs_update_extent_cache_range(struct dnode_of_data *dn,
2306 pgoff_t, block_t, unsigned int);
2307 void init_extent_cache_info(struct f2fs_sb_info *);
2308 int __init create_extent_cache(void);
2309 void destroy_extent_cache(void);
2314 static inline bool f2fs_encrypted_inode(struct inode *inode)
2316 return file_is_encrypt(inode);
2319 static inline void f2fs_set_encrypted_inode(struct inode *inode)
2321 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2322 file_set_encrypt(inode);
2326 static inline bool f2fs_bio_encrypted(struct bio *bio)
2328 return bio->bi_private != NULL;
2331 static inline int f2fs_sb_has_crypto(struct super_block *sb)
2333 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_ENCRYPT);
2336 static inline bool f2fs_may_encrypt(struct inode *inode)
2338 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2339 umode_t mode = inode->i_mode;
2341 return (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode));
2347 #ifndef CONFIG_F2FS_FS_ENCRYPTION
2348 #define fscrypt_set_d_op(i)
2349 #define fscrypt_get_ctx fscrypt_notsupp_get_ctx
2350 #define fscrypt_release_ctx fscrypt_notsupp_release_ctx
2351 #define fscrypt_encrypt_page fscrypt_notsupp_encrypt_page
2352 #define fscrypt_decrypt_page fscrypt_notsupp_decrypt_page
2353 #define fscrypt_decrypt_bio_pages fscrypt_notsupp_decrypt_bio_pages
2354 #define fscrypt_pullback_bio_page fscrypt_notsupp_pullback_bio_page
2355 #define fscrypt_restore_control_page fscrypt_notsupp_restore_control_page
2356 #define fscrypt_zeroout_range fscrypt_notsupp_zeroout_range
2357 #define fscrypt_process_policy fscrypt_notsupp_process_policy
2358 #define fscrypt_get_policy fscrypt_notsupp_get_policy
2359 #define fscrypt_has_permitted_context fscrypt_notsupp_has_permitted_context
2360 #define fscrypt_inherit_context fscrypt_notsupp_inherit_context
2361 #define fscrypt_get_encryption_info fscrypt_notsupp_get_encryption_info
2362 #define fscrypt_put_encryption_info fscrypt_notsupp_put_encryption_info
2363 #define fscrypt_setup_filename fscrypt_notsupp_setup_filename
2364 #define fscrypt_free_filename fscrypt_notsupp_free_filename
2365 #define fscrypt_fname_encrypted_size fscrypt_notsupp_fname_encrypted_size
2366 #define fscrypt_fname_alloc_buffer fscrypt_notsupp_fname_alloc_buffer
2367 #define fscrypt_fname_free_buffer fscrypt_notsupp_fname_free_buffer
2368 #define fscrypt_fname_disk_to_usr fscrypt_notsupp_fname_disk_to_usr
2369 #define fscrypt_fname_usr_to_disk fscrypt_notsupp_fname_usr_to_disk