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_HMSMR 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 * indicate meta/data type
160 /* for the list of ino */
162 ORPHAN_INO, /* for orphan ino list */
163 APPEND_INO, /* for append ino list */
164 UPDATE_INO, /* for update ino list */
165 MAX_INO_ENTRY, /* max. list */
169 struct list_head list; /* list head */
170 nid_t ino; /* inode number */
173 /* for the list of inodes to be GCed */
175 struct list_head list; /* list head */
176 struct inode *inode; /* vfs inode pointer */
179 /* for the list of blockaddresses to be discarded */
180 struct discard_entry {
181 struct list_head list; /* list head */
182 block_t blkaddr; /* block address to be discarded */
183 int len; /* # of consecutive blocks of the discard */
187 struct list_head list;
189 struct completion event;
193 /* for the list of fsync inodes, used only during recovery */
194 struct fsync_inode_entry {
195 struct list_head list; /* list head */
196 struct inode *inode; /* vfs inode pointer */
197 block_t blkaddr; /* block address locating the last fsync */
198 block_t last_dentry; /* block address locating the last dentry */
201 #define nats_in_cursum(jnl) (le16_to_cpu(jnl->n_nats))
202 #define sits_in_cursum(jnl) (le16_to_cpu(jnl->n_sits))
204 #define nat_in_journal(jnl, i) (jnl->nat_j.entries[i].ne)
205 #define nid_in_journal(jnl, i) (jnl->nat_j.entries[i].nid)
206 #define sit_in_journal(jnl, i) (jnl->sit_j.entries[i].se)
207 #define segno_in_journal(jnl, i) (jnl->sit_j.entries[i].segno)
209 #define MAX_NAT_JENTRIES(jnl) (NAT_JOURNAL_ENTRIES - nats_in_cursum(jnl))
210 #define MAX_SIT_JENTRIES(jnl) (SIT_JOURNAL_ENTRIES - sits_in_cursum(jnl))
212 static inline int update_nats_in_cursum(struct f2fs_journal *journal, int i)
214 int before = nats_in_cursum(journal);
215 journal->n_nats = cpu_to_le16(before + i);
219 static inline int update_sits_in_cursum(struct f2fs_journal *journal, int i)
221 int before = sits_in_cursum(journal);
222 journal->n_sits = cpu_to_le16(before + i);
226 static inline bool __has_cursum_space(struct f2fs_journal *journal,
229 if (type == NAT_JOURNAL)
230 return size <= MAX_NAT_JENTRIES(journal);
231 return size <= MAX_SIT_JENTRIES(journal);
237 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
238 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
239 #define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
241 #define F2FS_IOCTL_MAGIC 0xf5
242 #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
243 #define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
244 #define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
245 #define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
246 #define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
247 #define F2FS_IOC_GARBAGE_COLLECT _IO(F2FS_IOCTL_MAGIC, 6)
248 #define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7)
249 #define F2FS_IOC_DEFRAGMENT _IO(F2FS_IOCTL_MAGIC, 8)
250 #define F2FS_IOC_MOVE_RANGE _IOWR(F2FS_IOCTL_MAGIC, 9, \
251 struct f2fs_move_range)
253 #define F2FS_IOC_SET_ENCRYPTION_POLICY FS_IOC_SET_ENCRYPTION_POLICY
254 #define F2FS_IOC_GET_ENCRYPTION_POLICY FS_IOC_GET_ENCRYPTION_POLICY
255 #define F2FS_IOC_GET_ENCRYPTION_PWSALT FS_IOC_GET_ENCRYPTION_PWSALT
258 * should be same as XFS_IOC_GOINGDOWN.
259 * Flags for going down operation used by FS_IOC_GOINGDOWN
261 #define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
262 #define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
263 #define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
264 #define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
265 #define F2FS_GOING_DOWN_METAFLUSH 0x3 /* going down with meta flush */
267 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
269 * ioctl commands in 32 bit emulation
271 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
272 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
273 #define F2FS_IOC32_GETVERSION FS_IOC32_GETVERSION
276 struct f2fs_defragment {
281 struct f2fs_move_range {
282 u32 dst_fd; /* destination fd */
283 u64 pos_in; /* start position in src_fd */
284 u64 pos_out; /* start position in dst_fd */
285 u64 len; /* size to move */
289 * For INODE and NODE manager
291 /* for directory operations */
292 struct f2fs_dentry_ptr {
295 struct f2fs_dir_entry *dentry;
296 __u8 (*filename)[F2FS_SLOT_LEN];
300 static inline void make_dentry_ptr(struct inode *inode,
301 struct f2fs_dentry_ptr *d, void *src, int type)
306 struct f2fs_dentry_block *t = (struct f2fs_dentry_block *)src;
307 d->max = NR_DENTRY_IN_BLOCK;
308 d->bitmap = &t->dentry_bitmap;
309 d->dentry = t->dentry;
310 d->filename = t->filename;
312 struct f2fs_inline_dentry *t = (struct f2fs_inline_dentry *)src;
313 d->max = NR_INLINE_DENTRY;
314 d->bitmap = &t->dentry_bitmap;
315 d->dentry = t->dentry;
316 d->filename = t->filename;
321 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
322 * as its node offset to distinguish from index node blocks.
323 * But some bits are used to mark the node block.
325 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
328 ALLOC_NODE, /* allocate a new node page if needed */
329 LOOKUP_NODE, /* look up a node without readahead */
331 * look up a node with readahead called
336 #define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */
338 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
340 /* vector size for gang look-up from extent cache that consists of radix tree */
341 #define EXT_TREE_VEC_SIZE 64
343 /* for in-memory extent cache entry */
344 #define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
346 /* number of extent info in extent cache we try to shrink */
347 #define EXTENT_CACHE_SHRINK_NUMBER 128
350 unsigned int fofs; /* start offset in a file */
351 u32 blk; /* start block address of the extent */
352 unsigned int len; /* length of the extent */
356 struct rb_node rb_node; /* rb node located in rb-tree */
357 struct list_head list; /* node in global extent list of sbi */
358 struct extent_info ei; /* extent info */
359 struct extent_tree *et; /* extent tree pointer */
363 nid_t ino; /* inode number */
364 struct rb_root root; /* root of extent info rb-tree */
365 struct extent_node *cached_en; /* recently accessed extent node */
366 struct extent_info largest; /* largested extent info */
367 struct list_head list; /* to be used by sbi->zombie_list */
368 rwlock_t lock; /* protect extent info rb-tree */
369 atomic_t node_cnt; /* # of extent node in rb-tree*/
373 * This structure is taken from ext4_map_blocks.
375 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
377 #define F2FS_MAP_NEW (1 << BH_New)
378 #define F2FS_MAP_MAPPED (1 << BH_Mapped)
379 #define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten)
380 #define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
383 struct f2fs_map_blocks {
387 unsigned int m_flags;
388 pgoff_t *m_next_pgofs; /* point next possible non-hole pgofs */
391 /* for flag in get_data_block */
392 #define F2FS_GET_BLOCK_READ 0
393 #define F2FS_GET_BLOCK_DIO 1
394 #define F2FS_GET_BLOCK_FIEMAP 2
395 #define F2FS_GET_BLOCK_BMAP 3
396 #define F2FS_GET_BLOCK_PRE_DIO 4
397 #define F2FS_GET_BLOCK_PRE_AIO 5
400 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
402 #define FADVISE_COLD_BIT 0x01
403 #define FADVISE_LOST_PINO_BIT 0x02
404 #define FADVISE_ENCRYPT_BIT 0x04
405 #define FADVISE_ENC_NAME_BIT 0x08
407 #define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
408 #define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
409 #define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
410 #define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
411 #define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
412 #define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
413 #define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
414 #define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
415 #define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
416 #define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
417 #define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
419 #define DEF_DIR_LEVEL 0
421 struct f2fs_inode_info {
422 struct inode vfs_inode; /* serve a vfs inode */
423 unsigned long i_flags; /* keep an inode flags for ioctl */
424 unsigned char i_advise; /* use to give file attribute hints */
425 unsigned char i_dir_level; /* use for dentry level for large dir */
426 unsigned int i_current_depth; /* use only in directory structure */
427 unsigned int i_pino; /* parent inode number */
428 umode_t i_acl_mode; /* keep file acl mode temporarily */
430 /* Use below internally in f2fs*/
431 unsigned long flags; /* use to pass per-file flags */
432 struct rw_semaphore i_sem; /* protect fi info */
433 atomic_t dirty_pages; /* # of dirty pages */
434 f2fs_hash_t chash; /* hash value of given file name */
435 unsigned int clevel; /* maximum level of given file name */
436 struct task_struct *task; /* lookup and create consistency */
437 nid_t i_xattr_nid; /* node id that contains xattrs */
438 unsigned long long xattr_ver; /* cp version of xattr modification */
439 loff_t last_disk_size; /* lastly written file size */
441 struct list_head dirty_list; /* dirty list for dirs and files */
442 struct list_head gdirty_list; /* linked in global dirty list */
443 struct list_head inmem_pages; /* inmemory pages managed by f2fs */
444 struct mutex inmem_lock; /* lock for inmemory pages */
445 struct extent_tree *extent_tree; /* cached extent_tree entry */
446 struct rw_semaphore dio_rwsem[2];/* avoid racing between dio and gc */
449 static inline void get_extent_info(struct extent_info *ext,
450 struct f2fs_extent *i_ext)
452 ext->fofs = le32_to_cpu(i_ext->fofs);
453 ext->blk = le32_to_cpu(i_ext->blk);
454 ext->len = le32_to_cpu(i_ext->len);
457 static inline void set_raw_extent(struct extent_info *ext,
458 struct f2fs_extent *i_ext)
460 i_ext->fofs = cpu_to_le32(ext->fofs);
461 i_ext->blk = cpu_to_le32(ext->blk);
462 i_ext->len = cpu_to_le32(ext->len);
465 static inline void set_extent_info(struct extent_info *ei, unsigned int fofs,
466 u32 blk, unsigned int len)
473 static inline bool __is_extent_same(struct extent_info *ei1,
474 struct extent_info *ei2)
476 return (ei1->fofs == ei2->fofs && ei1->blk == ei2->blk &&
477 ei1->len == ei2->len);
480 static inline bool __is_extent_mergeable(struct extent_info *back,
481 struct extent_info *front)
483 return (back->fofs + back->len == front->fofs &&
484 back->blk + back->len == front->blk);
487 static inline bool __is_back_mergeable(struct extent_info *cur,
488 struct extent_info *back)
490 return __is_extent_mergeable(back, cur);
493 static inline bool __is_front_mergeable(struct extent_info *cur,
494 struct extent_info *front)
496 return __is_extent_mergeable(cur, front);
499 extern void f2fs_mark_inode_dirty_sync(struct inode *);
500 static inline void __try_update_largest_extent(struct inode *inode,
501 struct extent_tree *et, struct extent_node *en)
503 if (en->ei.len > et->largest.len) {
504 et->largest = en->ei;
505 f2fs_mark_inode_dirty_sync(inode);
509 struct f2fs_nm_info {
510 block_t nat_blkaddr; /* base disk address of NAT */
511 nid_t max_nid; /* maximum possible node ids */
512 nid_t available_nids; /* maximum available node ids */
513 nid_t next_scan_nid; /* the next nid to be scanned */
514 unsigned int ram_thresh; /* control the memory footprint */
515 unsigned int ra_nid_pages; /* # of nid pages to be readaheaded */
516 unsigned int dirty_nats_ratio; /* control dirty nats ratio threshold */
518 /* NAT cache management */
519 struct radix_tree_root nat_root;/* root of the nat entry cache */
520 struct radix_tree_root nat_set_root;/* root of the nat set cache */
521 struct rw_semaphore nat_tree_lock; /* protect nat_tree_lock */
522 struct list_head nat_entries; /* cached nat entry list (clean) */
523 unsigned int nat_cnt; /* the # of cached nat entries */
524 unsigned int dirty_nat_cnt; /* total num of nat entries in set */
526 /* free node ids management */
527 struct radix_tree_root free_nid_root;/* root of the free_nid cache */
528 struct list_head free_nid_list; /* a list for free nids */
529 spinlock_t free_nid_list_lock; /* protect free nid list */
530 unsigned int fcnt; /* the number of free node id */
531 struct mutex build_lock; /* lock for build free nids */
534 char *nat_bitmap; /* NAT bitmap pointer */
535 int bitmap_size; /* bitmap size */
539 * this structure is used as one of function parameters.
540 * all the information are dedicated to a given direct node block determined
541 * by the data offset in a file.
543 struct dnode_of_data {
544 struct inode *inode; /* vfs inode pointer */
545 struct page *inode_page; /* its inode page, NULL is possible */
546 struct page *node_page; /* cached direct node page */
547 nid_t nid; /* node id of the direct node block */
548 unsigned int ofs_in_node; /* data offset in the node page */
549 bool inode_page_locked; /* inode page is locked or not */
550 bool node_changed; /* is node block changed */
551 char cur_level; /* level of hole node page */
552 char max_level; /* level of current page located */
553 block_t data_blkaddr; /* block address of the node block */
556 static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
557 struct page *ipage, struct page *npage, nid_t nid)
559 memset(dn, 0, sizeof(*dn));
561 dn->inode_page = ipage;
562 dn->node_page = npage;
569 * By default, there are 6 active log areas across the whole main area.
570 * When considering hot and cold data separation to reduce cleaning overhead,
571 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
573 * In the current design, you should not change the numbers intentionally.
574 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
575 * logs individually according to the underlying devices. (default: 6)
576 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
577 * data and 8 for node logs.
579 #define NR_CURSEG_DATA_TYPE (3)
580 #define NR_CURSEG_NODE_TYPE (3)
581 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
584 CURSEG_HOT_DATA = 0, /* directory entry blocks */
585 CURSEG_WARM_DATA, /* data blocks */
586 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
587 CURSEG_HOT_NODE, /* direct node blocks of directory files */
588 CURSEG_WARM_NODE, /* direct node blocks of normal files */
589 CURSEG_COLD_NODE, /* indirect node blocks */
591 CURSEG_DIRECT_IO, /* to use for the direct IO path */
595 struct completion wait;
596 struct llist_node llnode;
600 struct flush_cmd_control {
601 struct task_struct *f2fs_issue_flush; /* flush thread */
602 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
603 atomic_t submit_flush; /* # of issued flushes */
604 struct llist_head issue_list; /* list for command issue */
605 struct llist_node *dispatch_list; /* list for command dispatch */
608 struct f2fs_sm_info {
609 struct sit_info *sit_info; /* whole segment information */
610 struct free_segmap_info *free_info; /* free segment information */
611 struct dirty_seglist_info *dirty_info; /* dirty segment information */
612 struct curseg_info *curseg_array; /* active segment information */
614 block_t seg0_blkaddr; /* block address of 0'th segment */
615 block_t main_blkaddr; /* start block address of main area */
616 block_t ssa_blkaddr; /* start block address of SSA area */
618 unsigned int segment_count; /* total # of segments */
619 unsigned int main_segments; /* # of segments in main area */
620 unsigned int reserved_segments; /* # of reserved segments */
621 unsigned int ovp_segments; /* # of overprovision segments */
623 /* a threshold to reclaim prefree segments */
624 unsigned int rec_prefree_segments;
626 /* for small discard management */
627 struct list_head discard_list; /* 4KB discard list */
628 struct list_head wait_list; /* linked with issued discard bio */
629 int nr_discards; /* # of discards in the list */
630 int max_discards; /* max. discards to be issued */
632 /* for batched trimming */
633 unsigned int trim_sections; /* # of sections to trim */
635 struct list_head sit_entry_set; /* sit entry set list */
637 unsigned int ipu_policy; /* in-place-update policy */
638 unsigned int min_ipu_util; /* in-place-update threshold */
639 unsigned int min_fsync_blocks; /* threshold for fsync */
641 /* for flush command control */
642 struct flush_cmd_control *cmd_control_info;
650 * COUNT_TYPE for monitoring
652 * f2fs monitors the number of several block types such as on-writeback,
653 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
666 * The below are the page types of bios used in submit_bio().
667 * The available types are:
668 * DATA User data pages. It operates as async mode.
669 * NODE Node pages. It operates as async mode.
670 * META FS metadata pages such as SIT, NAT, CP.
671 * NR_PAGE_TYPE The number of page types.
672 * META_FLUSH Make sure the previous pages are written
673 * with waiting the bio's completion
674 * ... Only can be used with META.
676 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
683 INMEM, /* the below types are used by tracepoints only. */
690 struct f2fs_io_info {
691 struct f2fs_sb_info *sbi; /* f2fs_sb_info pointer */
692 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
693 int op; /* contains REQ_OP_ */
694 int op_flags; /* rq_flag_bits */
695 block_t new_blkaddr; /* new block address to be written */
696 block_t old_blkaddr; /* old block address before Cow */
697 struct page *page; /* page to be written */
698 struct page *encrypted_page; /* encrypted page */
699 bool is_meta; /* indicate borrow meta inode mapping or not */
702 #define is_read_io(rw) (rw == READ)
703 struct f2fs_bio_info {
704 struct f2fs_sb_info *sbi; /* f2fs superblock */
705 struct bio *bio; /* bios to merge */
706 sector_t last_block_in_bio; /* last block number */
707 struct f2fs_io_info fio; /* store buffered io info. */
708 struct rw_semaphore io_rwsem; /* blocking op for bio */
712 DIR_INODE, /* for dirty dir inode */
713 FILE_INODE, /* for dirty regular/symlink inode */
714 DIRTY_META, /* for all dirtied inode metadata */
718 /* for inner inode cache management */
719 struct inode_management {
720 struct radix_tree_root ino_root; /* ino entry array */
721 spinlock_t ino_lock; /* for ino entry lock */
722 struct list_head ino_list; /* inode list head */
723 unsigned long ino_num; /* number of entries */
726 /* For s_flag in struct f2fs_sb_info */
728 SBI_IS_DIRTY, /* dirty flag for checkpoint */
729 SBI_IS_CLOSE, /* specify unmounting */
730 SBI_NEED_FSCK, /* need fsck.f2fs to fix */
731 SBI_POR_DOING, /* recovery is doing or not */
732 SBI_NEED_SB_WRITE, /* need to recover superblock */
733 SBI_NEED_CP, /* need to checkpoint */
742 #ifdef CONFIG_F2FS_FS_ENCRYPTION
743 #define F2FS_KEY_DESC_PREFIX "f2fs:"
744 #define F2FS_KEY_DESC_PREFIX_SIZE 5
746 struct f2fs_sb_info {
747 struct super_block *sb; /* pointer to VFS super block */
748 struct proc_dir_entry *s_proc; /* proc entry */
749 struct f2fs_super_block *raw_super; /* raw super block pointer */
750 int valid_super_block; /* valid super block no */
751 unsigned long s_flag; /* flags for sbi */
753 #ifdef CONFIG_F2FS_FS_ENCRYPTION
754 u8 key_prefix[F2FS_KEY_DESC_PREFIX_SIZE];
757 /* for node-related operations */
758 struct f2fs_nm_info *nm_info; /* node manager */
759 struct inode *node_inode; /* cache node blocks */
761 /* for segment-related operations */
762 struct f2fs_sm_info *sm_info; /* segment manager */
764 /* for bio operations */
765 struct f2fs_bio_info read_io; /* for read bios */
766 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */
767 struct mutex wio_mutex[NODE + 1]; /* bio ordering for NODE/DATA */
770 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
771 int cur_cp_pack; /* remain current cp pack */
772 spinlock_t cp_lock; /* for flag in ckpt */
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 atomic_t 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 /* threshold for converting bg victims for fg */
843 /* maximum # of trials to find a victim segment for SSR and GC */
844 unsigned int max_victim_search;
847 * for stat information.
848 * one is for the LFS mode, and the other is for the SSR mode.
850 #ifdef CONFIG_F2FS_STAT_FS
851 struct f2fs_stat_info *stat_info; /* FS status information */
852 unsigned int segment_count[2]; /* # of allocated segments */
853 unsigned int block_count[2]; /* # of allocated blocks */
854 atomic_t inplace_count; /* # of inplace update */
855 atomic64_t total_hit_ext; /* # of lookup extent cache */
856 atomic64_t read_hit_rbtree; /* # of hit rbtree extent node */
857 atomic64_t read_hit_largest; /* # of hit largest extent node */
858 atomic64_t read_hit_cached; /* # of hit cached extent node */
859 atomic_t inline_xattr; /* # of inline_xattr inodes */
860 atomic_t inline_inode; /* # of inline_data inodes */
861 atomic_t inline_dir; /* # of inline_dentry inodes */
862 int bg_gc; /* background gc calls */
863 unsigned int ndirty_inode[NR_INODE_TYPE]; /* # of dirty inodes */
865 unsigned int last_victim[2]; /* last victim segment # */
866 spinlock_t stat_lock; /* lock for stat operations */
868 /* For sysfs suppport */
869 struct kobject s_kobj;
870 struct completion s_kobj_unregister;
872 /* For shrinker support */
873 struct list_head s_list;
874 struct mutex umount_mutex;
875 unsigned int shrinker_run_no;
877 /* For write statistics */
878 u64 sectors_written_start;
881 /* Reference to checksum algorithm driver via cryptoapi */
882 struct crypto_shash *s_chksum_driver;
884 /* For fault injection */
885 #ifdef CONFIG_F2FS_FAULT_INJECTION
886 struct f2fs_fault_info fault_info;
890 #ifdef CONFIG_F2FS_FAULT_INJECTION
891 static inline bool time_to_inject(struct f2fs_sb_info *sbi, int type)
893 struct f2fs_fault_info *ffi = &sbi->fault_info;
895 if (!ffi->inject_rate)
898 if (!IS_FAULT_SET(ffi, type))
901 atomic_inc(&ffi->inject_ops);
902 if (atomic_read(&ffi->inject_ops) >= ffi->inject_rate) {
903 atomic_set(&ffi->inject_ops, 0);
904 printk("%sF2FS-fs : inject %s in %pF\n",
907 __builtin_return_address(0));
914 /* For write statistics. Suppose sector size is 512 bytes,
915 * and the return value is in kbytes. s is of struct f2fs_sb_info.
917 #define BD_PART_WRITTEN(s) \
918 (((u64)part_stat_read(s->sb->s_bdev->bd_part, sectors[1]) - \
919 s->sectors_written_start) >> 1)
921 static inline void f2fs_update_time(struct f2fs_sb_info *sbi, int type)
923 sbi->last_time[type] = jiffies;
926 static inline bool f2fs_time_over(struct f2fs_sb_info *sbi, int type)
928 struct timespec ts = {sbi->interval_time[type], 0};
929 unsigned long interval = timespec_to_jiffies(&ts);
931 return time_after(jiffies, sbi->last_time[type] + interval);
934 static inline bool is_idle(struct f2fs_sb_info *sbi)
936 struct block_device *bdev = sbi->sb->s_bdev;
937 struct request_queue *q = bdev_get_queue(bdev);
938 struct request_list *rl = &q->root_rl;
940 if (rl->count[BLK_RW_SYNC] || rl->count[BLK_RW_ASYNC])
943 return f2fs_time_over(sbi, REQ_TIME);
949 static inline u32 f2fs_crc32(struct f2fs_sb_info *sbi, const void *address,
952 SHASH_DESC_ON_STACK(shash, sbi->s_chksum_driver);
953 u32 *ctx = (u32 *)shash_desc_ctx(shash);
957 shash->tfm = sbi->s_chksum_driver;
959 *ctx = F2FS_SUPER_MAGIC;
961 err = crypto_shash_update(shash, address, length);
969 static inline bool f2fs_crc_valid(struct f2fs_sb_info *sbi, __u32 blk_crc,
970 void *buf, size_t buf_size)
972 return f2fs_crc32(sbi, buf, buf_size) == blk_crc;
975 static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
977 return container_of(inode, struct f2fs_inode_info, vfs_inode);
980 static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
982 return sb->s_fs_info;
985 static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
987 return F2FS_SB(inode->i_sb);
990 static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
992 return F2FS_I_SB(mapping->host);
995 static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
997 return F2FS_M_SB(page->mapping);
1000 static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
1002 return (struct f2fs_super_block *)(sbi->raw_super);
1005 static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
1007 return (struct f2fs_checkpoint *)(sbi->ckpt);
1010 static inline struct f2fs_node *F2FS_NODE(struct page *page)
1012 return (struct f2fs_node *)page_address(page);
1015 static inline struct f2fs_inode *F2FS_INODE(struct page *page)
1017 return &((struct f2fs_node *)page_address(page))->i;
1020 static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
1022 return (struct f2fs_nm_info *)(sbi->nm_info);
1025 static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
1027 return (struct f2fs_sm_info *)(sbi->sm_info);
1030 static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
1032 return (struct sit_info *)(SM_I(sbi)->sit_info);
1035 static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
1037 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
1040 static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
1042 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
1045 static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
1047 return sbi->meta_inode->i_mapping;
1050 static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
1052 return sbi->node_inode->i_mapping;
1055 static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
1057 return test_bit(type, &sbi->s_flag);
1060 static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
1062 set_bit(type, &sbi->s_flag);
1065 static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
1067 clear_bit(type, &sbi->s_flag);
1070 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
1072 return le64_to_cpu(cp->checkpoint_ver);
1075 static inline bool __is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1077 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1079 return ckpt_flags & f;
1082 static inline bool is_set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1084 return __is_set_ckpt_flags(F2FS_CKPT(sbi), f);
1087 static inline void __set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1089 unsigned int ckpt_flags;
1091 ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1093 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1096 static inline void set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1098 spin_lock(&sbi->cp_lock);
1099 __set_ckpt_flags(F2FS_CKPT(sbi), f);
1100 spin_unlock(&sbi->cp_lock);
1103 static inline void __clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1105 unsigned int ckpt_flags;
1107 ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1109 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1112 static inline void clear_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1114 spin_lock(&sbi->cp_lock);
1115 __clear_ckpt_flags(F2FS_CKPT(sbi), f);
1116 spin_unlock(&sbi->cp_lock);
1119 static inline bool f2fs_discard_en(struct f2fs_sb_info *sbi)
1121 struct request_queue *q = bdev_get_queue(sbi->sb->s_bdev);
1123 return blk_queue_discard(q);
1126 static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
1128 down_read(&sbi->cp_rwsem);
1131 static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
1133 up_read(&sbi->cp_rwsem);
1136 static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
1138 down_write(&sbi->cp_rwsem);
1141 static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
1143 up_write(&sbi->cp_rwsem);
1146 static inline int __get_cp_reason(struct f2fs_sb_info *sbi)
1148 int reason = CP_SYNC;
1150 if (test_opt(sbi, FASTBOOT))
1151 reason = CP_FASTBOOT;
1152 if (is_sbi_flag_set(sbi, SBI_IS_CLOSE))
1157 static inline bool __remain_node_summaries(int reason)
1159 return (reason == CP_UMOUNT || reason == CP_FASTBOOT);
1162 static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
1164 return (is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG) ||
1165 is_set_ckpt_flags(sbi, CP_FASTBOOT_FLAG));
1169 * Check whether the given nid is within node id range.
1171 static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
1173 if (unlikely(nid < F2FS_ROOT_INO(sbi)))
1175 if (unlikely(nid >= NM_I(sbi)->max_nid))
1180 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
1183 * Check whether the inode has blocks or not
1185 static inline int F2FS_HAS_BLOCKS(struct inode *inode)
1187 if (F2FS_I(inode)->i_xattr_nid)
1188 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1;
1190 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS;
1193 static inline bool f2fs_has_xattr_block(unsigned int ofs)
1195 return ofs == XATTR_NODE_OFFSET;
1198 static inline void f2fs_i_blocks_write(struct inode *, blkcnt_t, bool);
1199 static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
1200 struct inode *inode, blkcnt_t *count)
1204 #ifdef CONFIG_F2FS_FAULT_INJECTION
1205 if (time_to_inject(sbi, FAULT_BLOCK))
1209 * let's increase this in prior to actual block count change in order
1210 * for f2fs_sync_file to avoid data races when deciding checkpoint.
1212 percpu_counter_add(&sbi->alloc_valid_block_count, (*count));
1214 spin_lock(&sbi->stat_lock);
1215 sbi->total_valid_block_count += (block_t)(*count);
1216 if (unlikely(sbi->total_valid_block_count > sbi->user_block_count)) {
1217 diff = sbi->total_valid_block_count - sbi->user_block_count;
1219 sbi->total_valid_block_count = sbi->user_block_count;
1221 spin_unlock(&sbi->stat_lock);
1222 percpu_counter_sub(&sbi->alloc_valid_block_count, diff);
1226 spin_unlock(&sbi->stat_lock);
1228 f2fs_i_blocks_write(inode, *count, true);
1232 static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
1233 struct inode *inode,
1236 spin_lock(&sbi->stat_lock);
1237 f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
1238 f2fs_bug_on(sbi, inode->i_blocks < count);
1239 sbi->total_valid_block_count -= (block_t)count;
1240 spin_unlock(&sbi->stat_lock);
1241 f2fs_i_blocks_write(inode, count, false);
1244 static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
1246 atomic_inc(&sbi->nr_pages[count_type]);
1248 if (count_type == F2FS_DIRTY_DATA || count_type == F2FS_INMEM_PAGES)
1251 set_sbi_flag(sbi, SBI_IS_DIRTY);
1254 static inline void inode_inc_dirty_pages(struct inode *inode)
1256 atomic_inc(&F2FS_I(inode)->dirty_pages);
1257 inc_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
1258 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
1261 static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
1263 atomic_dec(&sbi->nr_pages[count_type]);
1266 static inline void inode_dec_dirty_pages(struct inode *inode)
1268 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
1269 !S_ISLNK(inode->i_mode))
1272 atomic_dec(&F2FS_I(inode)->dirty_pages);
1273 dec_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
1274 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
1277 static inline s64 get_pages(struct f2fs_sb_info *sbi, int count_type)
1279 return atomic_read(&sbi->nr_pages[count_type]);
1282 static inline int get_dirty_pages(struct inode *inode)
1284 return atomic_read(&F2FS_I(inode)->dirty_pages);
1287 static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
1289 unsigned int pages_per_sec = sbi->segs_per_sec * sbi->blocks_per_seg;
1290 unsigned int segs = (get_pages(sbi, block_type) + pages_per_sec - 1) >>
1291 sbi->log_blocks_per_seg;
1293 return segs / sbi->segs_per_sec;
1296 static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
1298 return sbi->total_valid_block_count;
1301 static inline block_t discard_blocks(struct f2fs_sb_info *sbi)
1303 return sbi->discard_blks;
1306 static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
1308 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1310 /* return NAT or SIT bitmap */
1311 if (flag == NAT_BITMAP)
1312 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
1313 else if (flag == SIT_BITMAP)
1314 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
1319 static inline block_t __cp_payload(struct f2fs_sb_info *sbi)
1321 return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
1324 static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
1326 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1329 if (__cp_payload(sbi) > 0) {
1330 if (flag == NAT_BITMAP)
1331 return &ckpt->sit_nat_version_bitmap;
1333 return (unsigned char *)ckpt + F2FS_BLKSIZE;
1335 offset = (flag == NAT_BITMAP) ?
1336 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
1337 return &ckpt->sit_nat_version_bitmap + offset;
1341 static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
1343 block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
1345 if (sbi->cur_cp_pack == 2)
1346 start_addr += sbi->blocks_per_seg;
1350 static inline block_t __start_cp_next_addr(struct f2fs_sb_info *sbi)
1352 block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
1354 if (sbi->cur_cp_pack == 1)
1355 start_addr += sbi->blocks_per_seg;
1359 static inline void __set_cp_next_pack(struct f2fs_sb_info *sbi)
1361 sbi->cur_cp_pack = (sbi->cur_cp_pack == 1) ? 2 : 1;
1364 static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
1366 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
1369 static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
1370 struct inode *inode)
1372 block_t valid_block_count;
1373 unsigned int valid_node_count;
1375 spin_lock(&sbi->stat_lock);
1377 valid_block_count = sbi->total_valid_block_count + 1;
1378 if (unlikely(valid_block_count > sbi->user_block_count)) {
1379 spin_unlock(&sbi->stat_lock);
1383 valid_node_count = sbi->total_valid_node_count + 1;
1384 if (unlikely(valid_node_count > sbi->total_node_count)) {
1385 spin_unlock(&sbi->stat_lock);
1390 f2fs_i_blocks_write(inode, 1, true);
1392 sbi->total_valid_node_count++;
1393 sbi->total_valid_block_count++;
1394 spin_unlock(&sbi->stat_lock);
1396 percpu_counter_inc(&sbi->alloc_valid_block_count);
1400 static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
1401 struct inode *inode)
1403 spin_lock(&sbi->stat_lock);
1405 f2fs_bug_on(sbi, !sbi->total_valid_block_count);
1406 f2fs_bug_on(sbi, !sbi->total_valid_node_count);
1407 f2fs_bug_on(sbi, !inode->i_blocks);
1409 f2fs_i_blocks_write(inode, 1, false);
1410 sbi->total_valid_node_count--;
1411 sbi->total_valid_block_count--;
1413 spin_unlock(&sbi->stat_lock);
1416 static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
1418 return sbi->total_valid_node_count;
1421 static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
1423 percpu_counter_inc(&sbi->total_valid_inode_count);
1426 static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
1428 percpu_counter_dec(&sbi->total_valid_inode_count);
1431 static inline s64 valid_inode_count(struct f2fs_sb_info *sbi)
1433 return percpu_counter_sum_positive(&sbi->total_valid_inode_count);
1436 static inline struct page *f2fs_grab_cache_page(struct address_space *mapping,
1437 pgoff_t index, bool for_write)
1439 #ifdef CONFIG_F2FS_FAULT_INJECTION
1440 struct page *page = find_lock_page(mapping, index);
1444 if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_ALLOC))
1448 return grab_cache_page(mapping, index);
1449 return grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS);
1452 static inline void f2fs_copy_page(struct page *src, struct page *dst)
1454 char *src_kaddr = kmap(src);
1455 char *dst_kaddr = kmap(dst);
1457 memcpy(dst_kaddr, src_kaddr, PAGE_SIZE);
1462 static inline void f2fs_put_page(struct page *page, int unlock)
1468 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
1474 static inline void f2fs_put_dnode(struct dnode_of_data *dn)
1477 f2fs_put_page(dn->node_page, 1);
1478 if (dn->inode_page && dn->node_page != dn->inode_page)
1479 f2fs_put_page(dn->inode_page, 0);
1480 dn->node_page = NULL;
1481 dn->inode_page = NULL;
1484 static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
1487 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
1490 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
1495 entry = kmem_cache_alloc(cachep, flags);
1497 entry = kmem_cache_alloc(cachep, flags | __GFP_NOFAIL);
1501 static inline struct bio *f2fs_bio_alloc(int npages)
1505 /* No failure on bio allocation */
1506 bio = bio_alloc(GFP_NOIO, npages);
1508 bio = bio_alloc(GFP_NOIO | __GFP_NOFAIL, npages);
1512 static inline void f2fs_radix_tree_insert(struct radix_tree_root *root,
1513 unsigned long index, void *item)
1515 while (radix_tree_insert(root, index, item))
1519 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1521 static inline bool IS_INODE(struct page *page)
1523 struct f2fs_node *p = F2FS_NODE(page);
1524 return RAW_IS_INODE(p);
1527 static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
1529 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
1532 static inline block_t datablock_addr(struct page *node_page,
1533 unsigned int offset)
1535 struct f2fs_node *raw_node;
1537 raw_node = F2FS_NODE(node_page);
1538 addr_array = blkaddr_in_node(raw_node);
1539 return le32_to_cpu(addr_array[offset]);
1542 static inline int f2fs_test_bit(unsigned int nr, char *addr)
1547 mask = 1 << (7 - (nr & 0x07));
1548 return mask & *addr;
1551 static inline void f2fs_set_bit(unsigned int nr, char *addr)
1556 mask = 1 << (7 - (nr & 0x07));
1560 static inline void f2fs_clear_bit(unsigned int nr, char *addr)
1565 mask = 1 << (7 - (nr & 0x07));
1569 static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
1575 mask = 1 << (7 - (nr & 0x07));
1581 static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
1587 mask = 1 << (7 - (nr & 0x07));
1593 static inline void f2fs_change_bit(unsigned int nr, char *addr)
1598 mask = 1 << (7 - (nr & 0x07));
1602 /* used for f2fs_inode_info->flags */
1604 FI_NEW_INODE, /* indicate newly allocated inode */
1605 FI_DIRTY_INODE, /* indicate inode is dirty or not */
1606 FI_AUTO_RECOVER, /* indicate inode is recoverable */
1607 FI_DIRTY_DIR, /* indicate directory has dirty pages */
1608 FI_INC_LINK, /* need to increment i_nlink */
1609 FI_ACL_MODE, /* indicate acl mode */
1610 FI_NO_ALLOC, /* should not allocate any blocks */
1611 FI_FREE_NID, /* free allocated nide */
1612 FI_NO_EXTENT, /* not to use the extent cache */
1613 FI_INLINE_XATTR, /* used for inline xattr */
1614 FI_INLINE_DATA, /* used for inline data*/
1615 FI_INLINE_DENTRY, /* used for inline dentry */
1616 FI_APPEND_WRITE, /* inode has appended data */
1617 FI_UPDATE_WRITE, /* inode has in-place-update data */
1618 FI_NEED_IPU, /* used for ipu per file */
1619 FI_ATOMIC_FILE, /* indicate atomic file */
1620 FI_VOLATILE_FILE, /* indicate volatile file */
1621 FI_FIRST_BLOCK_WRITTEN, /* indicate #0 data block was written */
1622 FI_DROP_CACHE, /* drop dirty page cache */
1623 FI_DATA_EXIST, /* indicate data exists */
1624 FI_INLINE_DOTS, /* indicate inline dot dentries */
1625 FI_DO_DEFRAG, /* indicate defragment is running */
1626 FI_DIRTY_FILE, /* indicate regular/symlink has dirty pages */
1629 static inline void __mark_inode_dirty_flag(struct inode *inode,
1633 case FI_INLINE_XATTR:
1634 case FI_INLINE_DATA:
1635 case FI_INLINE_DENTRY:
1639 case FI_INLINE_DOTS:
1640 f2fs_mark_inode_dirty_sync(inode);
1644 static inline void set_inode_flag(struct inode *inode, int flag)
1646 if (!test_bit(flag, &F2FS_I(inode)->flags))
1647 set_bit(flag, &F2FS_I(inode)->flags);
1648 __mark_inode_dirty_flag(inode, flag, true);
1651 static inline int is_inode_flag_set(struct inode *inode, int flag)
1653 return test_bit(flag, &F2FS_I(inode)->flags);
1656 static inline void clear_inode_flag(struct inode *inode, int flag)
1658 if (test_bit(flag, &F2FS_I(inode)->flags))
1659 clear_bit(flag, &F2FS_I(inode)->flags);
1660 __mark_inode_dirty_flag(inode, flag, false);
1663 static inline void set_acl_inode(struct inode *inode, umode_t mode)
1665 F2FS_I(inode)->i_acl_mode = mode;
1666 set_inode_flag(inode, FI_ACL_MODE);
1667 f2fs_mark_inode_dirty_sync(inode);
1670 static inline void f2fs_i_links_write(struct inode *inode, bool inc)
1676 f2fs_mark_inode_dirty_sync(inode);
1679 static inline void f2fs_i_blocks_write(struct inode *inode,
1680 blkcnt_t diff, bool add)
1682 bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
1683 bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);
1685 inode->i_blocks = add ? inode->i_blocks + diff :
1686 inode->i_blocks - diff;
1687 f2fs_mark_inode_dirty_sync(inode);
1688 if (clean || recover)
1689 set_inode_flag(inode, FI_AUTO_RECOVER);
1692 static inline void f2fs_i_size_write(struct inode *inode, loff_t i_size)
1694 bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
1695 bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);
1697 if (i_size_read(inode) == i_size)
1700 i_size_write(inode, i_size);
1701 f2fs_mark_inode_dirty_sync(inode);
1702 if (clean || recover)
1703 set_inode_flag(inode, FI_AUTO_RECOVER);
1706 static inline bool f2fs_skip_inode_update(struct inode *inode)
1708 if (!is_inode_flag_set(inode, FI_AUTO_RECOVER))
1710 return F2FS_I(inode)->last_disk_size == i_size_read(inode);
1713 static inline void f2fs_i_depth_write(struct inode *inode, unsigned int depth)
1715 F2FS_I(inode)->i_current_depth = depth;
1716 f2fs_mark_inode_dirty_sync(inode);
1719 static inline void f2fs_i_xnid_write(struct inode *inode, nid_t xnid)
1721 F2FS_I(inode)->i_xattr_nid = xnid;
1722 f2fs_mark_inode_dirty_sync(inode);
1725 static inline void f2fs_i_pino_write(struct inode *inode, nid_t pino)
1727 F2FS_I(inode)->i_pino = pino;
1728 f2fs_mark_inode_dirty_sync(inode);
1731 static inline void get_inline_info(struct inode *inode, struct f2fs_inode *ri)
1733 struct f2fs_inode_info *fi = F2FS_I(inode);
1735 if (ri->i_inline & F2FS_INLINE_XATTR)
1736 set_bit(FI_INLINE_XATTR, &fi->flags);
1737 if (ri->i_inline & F2FS_INLINE_DATA)
1738 set_bit(FI_INLINE_DATA, &fi->flags);
1739 if (ri->i_inline & F2FS_INLINE_DENTRY)
1740 set_bit(FI_INLINE_DENTRY, &fi->flags);
1741 if (ri->i_inline & F2FS_DATA_EXIST)
1742 set_bit(FI_DATA_EXIST, &fi->flags);
1743 if (ri->i_inline & F2FS_INLINE_DOTS)
1744 set_bit(FI_INLINE_DOTS, &fi->flags);
1747 static inline void set_raw_inline(struct inode *inode, struct f2fs_inode *ri)
1751 if (is_inode_flag_set(inode, FI_INLINE_XATTR))
1752 ri->i_inline |= F2FS_INLINE_XATTR;
1753 if (is_inode_flag_set(inode, FI_INLINE_DATA))
1754 ri->i_inline |= F2FS_INLINE_DATA;
1755 if (is_inode_flag_set(inode, FI_INLINE_DENTRY))
1756 ri->i_inline |= F2FS_INLINE_DENTRY;
1757 if (is_inode_flag_set(inode, FI_DATA_EXIST))
1758 ri->i_inline |= F2FS_DATA_EXIST;
1759 if (is_inode_flag_set(inode, FI_INLINE_DOTS))
1760 ri->i_inline |= F2FS_INLINE_DOTS;
1763 static inline int f2fs_has_inline_xattr(struct inode *inode)
1765 return is_inode_flag_set(inode, FI_INLINE_XATTR);
1768 static inline unsigned int addrs_per_inode(struct inode *inode)
1770 if (f2fs_has_inline_xattr(inode))
1771 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
1772 return DEF_ADDRS_PER_INODE;
1775 static inline void *inline_xattr_addr(struct page *page)
1777 struct f2fs_inode *ri = F2FS_INODE(page);
1778 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
1779 F2FS_INLINE_XATTR_ADDRS]);
1782 static inline int inline_xattr_size(struct inode *inode)
1784 if (f2fs_has_inline_xattr(inode))
1785 return F2FS_INLINE_XATTR_ADDRS << 2;
1790 static inline int f2fs_has_inline_data(struct inode *inode)
1792 return is_inode_flag_set(inode, FI_INLINE_DATA);
1795 static inline void f2fs_clear_inline_inode(struct inode *inode)
1797 clear_inode_flag(inode, FI_INLINE_DATA);
1798 clear_inode_flag(inode, FI_DATA_EXIST);
1801 static inline int f2fs_exist_data(struct inode *inode)
1803 return is_inode_flag_set(inode, FI_DATA_EXIST);
1806 static inline int f2fs_has_inline_dots(struct inode *inode)
1808 return is_inode_flag_set(inode, FI_INLINE_DOTS);
1811 static inline bool f2fs_is_atomic_file(struct inode *inode)
1813 return is_inode_flag_set(inode, FI_ATOMIC_FILE);
1816 static inline bool f2fs_is_volatile_file(struct inode *inode)
1818 return is_inode_flag_set(inode, FI_VOLATILE_FILE);
1821 static inline bool f2fs_is_first_block_written(struct inode *inode)
1823 return is_inode_flag_set(inode, FI_FIRST_BLOCK_WRITTEN);
1826 static inline bool f2fs_is_drop_cache(struct inode *inode)
1828 return is_inode_flag_set(inode, FI_DROP_CACHE);
1831 static inline void *inline_data_addr(struct page *page)
1833 struct f2fs_inode *ri = F2FS_INODE(page);
1834 return (void *)&(ri->i_addr[1]);
1837 static inline int f2fs_has_inline_dentry(struct inode *inode)
1839 return is_inode_flag_set(inode, FI_INLINE_DENTRY);
1842 static inline void f2fs_dentry_kunmap(struct inode *dir, struct page *page)
1844 if (!f2fs_has_inline_dentry(dir))
1848 static inline int is_file(struct inode *inode, int type)
1850 return F2FS_I(inode)->i_advise & type;
1853 static inline void set_file(struct inode *inode, int type)
1855 F2FS_I(inode)->i_advise |= type;
1856 f2fs_mark_inode_dirty_sync(inode);
1859 static inline void clear_file(struct inode *inode, int type)
1861 F2FS_I(inode)->i_advise &= ~type;
1862 f2fs_mark_inode_dirty_sync(inode);
1865 static inline int f2fs_readonly(struct super_block *sb)
1867 return sb->s_flags & MS_RDONLY;
1870 static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
1872 return is_set_ckpt_flags(sbi, CP_ERROR_FLAG);
1875 static inline bool is_dot_dotdot(const struct qstr *str)
1877 if (str->len == 1 && str->name[0] == '.')
1880 if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.')
1886 static inline bool f2fs_may_extent_tree(struct inode *inode)
1888 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1890 if (!test_opt(sbi, EXTENT_CACHE) ||
1891 is_inode_flag_set(inode, FI_NO_EXTENT))
1895 * for recovered files during mount do not create extents
1896 * if shrinker is not registered.
1898 if (list_empty(&sbi->s_list))
1901 return S_ISREG(inode->i_mode);
1904 static inline void *f2fs_kmalloc(struct f2fs_sb_info *sbi,
1905 size_t size, gfp_t flags)
1907 #ifdef CONFIG_F2FS_FAULT_INJECTION
1908 if (time_to_inject(sbi, FAULT_KMALLOC))
1911 return kmalloc(size, flags);
1914 static inline void *f2fs_kvmalloc(size_t size, gfp_t flags)
1918 ret = kmalloc(size, flags | __GFP_NOWARN);
1920 ret = __vmalloc(size, flags, PAGE_KERNEL);
1924 static inline void *f2fs_kvzalloc(size_t size, gfp_t flags)
1928 ret = kzalloc(size, flags | __GFP_NOWARN);
1930 ret = __vmalloc(size, flags | __GFP_ZERO, PAGE_KERNEL);
1934 #define get_inode_mode(i) \
1935 ((is_inode_flag_set(i, FI_ACL_MODE)) ? \
1936 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1938 /* get offset of first page in next direct node */
1939 #define PGOFS_OF_NEXT_DNODE(pgofs, inode) \
1940 ((pgofs < ADDRS_PER_INODE(inode)) ? ADDRS_PER_INODE(inode) : \
1941 (pgofs - ADDRS_PER_INODE(inode) + ADDRS_PER_BLOCK) / \
1942 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(inode))
1944 #define __is_meta_io(fio) (PAGE_TYPE_OF_BIO(fio->type) == META && \
1945 (!is_read_io(fio->op) || fio->is_meta))
1947 bool f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi,
1948 block_t blkaddr, int type);
1949 void f2fs_msg(struct super_block *sb, const char *level, const char *fmt, ...);
1950 static inline void verify_blkaddr(struct f2fs_sb_info *sbi,
1951 block_t blkaddr, int type)
1953 if (!f2fs_is_valid_blkaddr(sbi, blkaddr, type)) {
1954 f2fs_msg(sbi->sb, KERN_ERR,
1955 "invalid blkaddr: %u, type: %d, run fsck to fix.",
1957 f2fs_bug_on(sbi, 1);
1961 static inline bool __is_valid_data_blkaddr(block_t blkaddr)
1963 if (blkaddr == NEW_ADDR || blkaddr == NULL_ADDR)
1968 static inline bool is_valid_data_blkaddr(struct f2fs_sb_info *sbi,
1971 if (!__is_valid_data_blkaddr(blkaddr))
1973 verify_blkaddr(sbi, blkaddr, DATA_GENERIC);
1980 int f2fs_sync_file(struct file *, loff_t, loff_t, int);
1981 void truncate_data_blocks(struct dnode_of_data *);
1982 int truncate_blocks(struct inode *, u64, bool);
1983 int f2fs_truncate(struct inode *);
1984 int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
1985 int f2fs_setattr(struct dentry *, struct iattr *);
1986 int truncate_hole(struct inode *, pgoff_t, pgoff_t);
1987 int truncate_data_blocks_range(struct dnode_of_data *, int);
1988 long f2fs_ioctl(struct file *, unsigned int, unsigned long);
1989 long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long);
1994 void f2fs_set_inode_flags(struct inode *);
1995 struct inode *f2fs_iget(struct super_block *, unsigned long);
1996 struct inode *f2fs_iget_retry(struct super_block *, unsigned long);
1997 int try_to_free_nats(struct f2fs_sb_info *, int);
1998 int update_inode(struct inode *, struct page *);
1999 int update_inode_page(struct inode *);
2000 int f2fs_write_inode(struct inode *, struct writeback_control *);
2001 void f2fs_evict_inode(struct inode *);
2002 void handle_failed_inode(struct inode *);
2007 struct dentry *f2fs_get_parent(struct dentry *child);
2012 void set_de_type(struct f2fs_dir_entry *, umode_t);
2013 unsigned char get_de_type(struct f2fs_dir_entry *);
2014 struct f2fs_dir_entry *find_target_dentry(struct fscrypt_name *,
2015 f2fs_hash_t, int *, struct f2fs_dentry_ptr *);
2016 bool f2fs_fill_dentries(struct dir_context *, struct f2fs_dentry_ptr *,
2017 unsigned int, struct fscrypt_str *);
2018 void do_make_empty_dir(struct inode *, struct inode *,
2019 struct f2fs_dentry_ptr *);
2020 struct page *init_inode_metadata(struct inode *, struct inode *,
2021 const struct qstr *, const struct qstr *, struct page *);
2022 void update_parent_metadata(struct inode *, struct inode *, unsigned int);
2023 int room_for_filename(const void *, int, int);
2024 void f2fs_drop_nlink(struct inode *, struct inode *);
2025 struct f2fs_dir_entry *__f2fs_find_entry(struct inode *, struct fscrypt_name *,
2027 struct f2fs_dir_entry *f2fs_find_entry(struct inode *, const struct qstr *,
2029 struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
2030 ino_t f2fs_inode_by_name(struct inode *, const struct qstr *, struct page **);
2031 void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
2032 struct page *, struct inode *);
2033 int update_dent_inode(struct inode *, struct inode *, const struct qstr *);
2034 void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *,
2035 const struct qstr *, f2fs_hash_t , unsigned int);
2036 int f2fs_add_regular_entry(struct inode *, const struct qstr *,
2037 const struct qstr *, struct inode *, nid_t, umode_t);
2038 int __f2fs_do_add_link(struct inode *, struct fscrypt_name*, struct inode *,
2040 int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *, nid_t,
2042 void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *,
2044 int f2fs_do_tmpfile(struct inode *, struct inode *);
2045 bool f2fs_empty_dir(struct inode *);
2047 static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
2049 return __f2fs_add_link(d_inode(dentry->d_parent), &dentry->d_name,
2050 inode, inode->i_ino, inode->i_mode);
2056 int f2fs_inode_dirtied(struct inode *);
2057 void f2fs_inode_synced(struct inode *);
2058 int f2fs_commit_super(struct f2fs_sb_info *, bool);
2059 int f2fs_sync_fs(struct super_block *, int);
2060 extern __printf(3, 4)
2061 void f2fs_msg(struct super_block *, const char *, const char *, ...);
2062 int sanity_check_ckpt(struct f2fs_sb_info *sbi);
2067 f2fs_hash_t f2fs_dentry_hash(const struct qstr *name_info,
2068 struct fscrypt_name *fname);
2073 struct dnode_of_data;
2076 bool available_free_memory(struct f2fs_sb_info *, int);
2077 int need_dentry_mark(struct f2fs_sb_info *, nid_t);
2078 bool is_checkpointed_node(struct f2fs_sb_info *, nid_t);
2079 bool need_inode_block_update(struct f2fs_sb_info *, nid_t);
2080 void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
2081 pgoff_t get_next_page_offset(struct dnode_of_data *, pgoff_t);
2082 int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);
2083 int truncate_inode_blocks(struct inode *, pgoff_t);
2084 int truncate_xattr_node(struct inode *, struct page *);
2085 int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t);
2086 int remove_inode_page(struct inode *);
2087 struct page *new_inode_page(struct inode *);
2088 struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *);
2089 void ra_node_page(struct f2fs_sb_info *, nid_t);
2090 struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
2091 struct page *get_node_page_ra(struct page *, int);
2092 void move_node_page(struct page *, int);
2093 int fsync_node_pages(struct f2fs_sb_info *, struct inode *,
2094 struct writeback_control *, bool);
2095 int sync_node_pages(struct f2fs_sb_info *, struct writeback_control *);
2096 void build_free_nids(struct f2fs_sb_info *);
2097 bool alloc_nid(struct f2fs_sb_info *, nid_t *);
2098 void alloc_nid_done(struct f2fs_sb_info *, nid_t);
2099 void alloc_nid_failed(struct f2fs_sb_info *, nid_t);
2100 int try_to_free_nids(struct f2fs_sb_info *, int);
2101 void recover_inline_xattr(struct inode *, struct page *);
2102 void recover_xattr_data(struct inode *, struct page *, block_t);
2103 int recover_inode_page(struct f2fs_sb_info *, struct page *);
2104 int restore_node_summary(struct f2fs_sb_info *, unsigned int,
2105 struct f2fs_summary_block *);
2106 void flush_nat_entries(struct f2fs_sb_info *);
2107 int build_node_manager(struct f2fs_sb_info *);
2108 void destroy_node_manager(struct f2fs_sb_info *);
2109 int __init create_node_manager_caches(void);
2110 void destroy_node_manager_caches(void);
2115 void register_inmem_page(struct inode *, struct page *);
2116 void drop_inmem_pages(struct inode *);
2117 int commit_inmem_pages(struct inode *);
2118 void f2fs_balance_fs(struct f2fs_sb_info *, bool);
2119 void f2fs_balance_fs_bg(struct f2fs_sb_info *);
2120 int f2fs_issue_flush(struct f2fs_sb_info *);
2121 int create_flush_cmd_control(struct f2fs_sb_info *);
2122 void destroy_flush_cmd_control(struct f2fs_sb_info *);
2123 void invalidate_blocks(struct f2fs_sb_info *, block_t);
2124 bool is_checkpointed_data(struct f2fs_sb_info *, block_t);
2125 void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t);
2126 void f2fs_wait_all_discard_bio(struct f2fs_sb_info *);
2127 void clear_prefree_segments(struct f2fs_sb_info *, struct cp_control *);
2128 void release_discard_addrs(struct f2fs_sb_info *);
2129 int npages_for_summary_flush(struct f2fs_sb_info *, bool);
2130 void allocate_new_segments(struct f2fs_sb_info *);
2131 int f2fs_trim_fs(struct f2fs_sb_info *, struct fstrim_range *);
2132 struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
2133 void update_meta_page(struct f2fs_sb_info *, void *, block_t);
2134 void write_meta_page(struct f2fs_sb_info *, struct page *);
2135 void write_node_page(unsigned int, struct f2fs_io_info *);
2136 void write_data_page(struct dnode_of_data *, struct f2fs_io_info *);
2137 void rewrite_data_page(struct f2fs_io_info *);
2138 void __f2fs_replace_block(struct f2fs_sb_info *, struct f2fs_summary *,
2139 block_t, block_t, bool, bool);
2140 void f2fs_replace_block(struct f2fs_sb_info *, struct dnode_of_data *,
2141 block_t, block_t, unsigned char, bool, bool);
2142 void allocate_data_block(struct f2fs_sb_info *, struct page *,
2143 block_t, block_t *, struct f2fs_summary *, int);
2144 void f2fs_wait_on_page_writeback(struct page *, enum page_type, bool);
2145 void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info *, block_t);
2146 void write_data_summaries(struct f2fs_sb_info *, block_t);
2147 void write_node_summaries(struct f2fs_sb_info *, block_t);
2148 int lookup_journal_in_cursum(struct f2fs_journal *, int, unsigned int, int);
2149 void flush_sit_entries(struct f2fs_sb_info *, struct cp_control *);
2150 int build_segment_manager(struct f2fs_sb_info *);
2151 void destroy_segment_manager(struct f2fs_sb_info *);
2152 int __init create_segment_manager_caches(void);
2153 void destroy_segment_manager_caches(void);
2158 void f2fs_stop_checkpoint(struct f2fs_sb_info *, bool);
2159 struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
2160 struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
2161 struct page *get_tmp_page(struct f2fs_sb_info *, pgoff_t);
2162 bool f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi,
2163 block_t blkaddr, int type);
2164 int ra_meta_pages(struct f2fs_sb_info *, block_t, int, int, bool);
2165 void ra_meta_pages_cond(struct f2fs_sb_info *, pgoff_t);
2166 long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
2167 void add_ino_entry(struct f2fs_sb_info *, nid_t, int type);
2168 void remove_ino_entry(struct f2fs_sb_info *, nid_t, int type);
2169 void release_ino_entry(struct f2fs_sb_info *, bool);
2170 bool exist_written_data(struct f2fs_sb_info *, nid_t, int);
2171 int f2fs_sync_inode_meta(struct f2fs_sb_info *);
2172 int acquire_orphan_inode(struct f2fs_sb_info *);
2173 void release_orphan_inode(struct f2fs_sb_info *);
2174 void add_orphan_inode(struct inode *);
2175 void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
2176 int recover_orphan_inodes(struct f2fs_sb_info *);
2177 int get_valid_checkpoint(struct f2fs_sb_info *);
2178 void update_dirty_page(struct inode *, struct page *);
2179 void remove_dirty_inode(struct inode *);
2180 int sync_dirty_inodes(struct f2fs_sb_info *, enum inode_type);
2181 int write_checkpoint(struct f2fs_sb_info *, struct cp_control *);
2182 void init_ino_entry_info(struct f2fs_sb_info *);
2183 int __init create_checkpoint_caches(void);
2184 void destroy_checkpoint_caches(void);
2189 void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int);
2190 void f2fs_submit_merged_bio_cond(struct f2fs_sb_info *, struct inode *,
2191 struct page *, nid_t, enum page_type, int);
2192 void f2fs_flush_merged_bios(struct f2fs_sb_info *);
2193 int f2fs_submit_page_bio(struct f2fs_io_info *);
2194 void f2fs_submit_page_mbio(struct f2fs_io_info *);
2195 void set_data_blkaddr(struct dnode_of_data *);
2196 void f2fs_update_data_blkaddr(struct dnode_of_data *, block_t);
2197 int reserve_new_blocks(struct dnode_of_data *, blkcnt_t);
2198 int reserve_new_block(struct dnode_of_data *);
2199 int f2fs_get_block(struct dnode_of_data *, pgoff_t);
2200 ssize_t f2fs_preallocate_blocks(struct kiocb *, struct iov_iter *);
2201 int f2fs_reserve_block(struct dnode_of_data *, pgoff_t);
2202 struct page *get_read_data_page(struct inode *, pgoff_t, int, bool);
2203 struct page *find_data_page(struct inode *, pgoff_t);
2204 struct page *get_lock_data_page(struct inode *, pgoff_t, bool);
2205 struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
2206 int do_write_data_page(struct f2fs_io_info *);
2207 int f2fs_map_blocks(struct inode *, struct f2fs_map_blocks *, int, int);
2208 int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64);
2209 void f2fs_set_page_dirty_nobuffers(struct page *);
2210 void f2fs_invalidate_page(struct page *, unsigned int, unsigned int);
2211 int f2fs_release_page(struct page *, gfp_t);
2212 #ifdef CONFIG_MIGRATION
2213 int f2fs_migrate_page(struct address_space *, struct page *, struct page *,
2220 int start_gc_thread(struct f2fs_sb_info *);
2221 void stop_gc_thread(struct f2fs_sb_info *);
2222 block_t start_bidx_of_node(unsigned int, struct inode *);
2223 int f2fs_gc(struct f2fs_sb_info *, bool);
2224 void build_gc_manager(struct f2fs_sb_info *);
2229 int recover_fsync_data(struct f2fs_sb_info *, bool);
2230 bool space_for_roll_forward(struct f2fs_sb_info *);
2235 #ifdef CONFIG_F2FS_STAT_FS
2236 struct f2fs_stat_info {
2237 struct list_head stat_list;
2238 struct f2fs_sb_info *sbi;
2239 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
2240 int main_area_segs, main_area_sections, main_area_zones;
2241 unsigned long long hit_largest, hit_cached, hit_rbtree;
2242 unsigned long long hit_total, total_ext;
2243 int ext_tree, zombie_tree, ext_node;
2244 int ndirty_node, ndirty_dent, ndirty_meta, ndirty_data, ndirty_imeta;
2246 unsigned int ndirty_dirs, ndirty_files, ndirty_all;
2247 int nats, dirty_nats, sits, dirty_sits, fnids;
2248 int total_count, utilization;
2250 int inline_xattr, inline_inode, inline_dir, orphans;
2251 unsigned int valid_count, valid_node_count, valid_inode_count, discard_blks;
2252 unsigned int bimodal, avg_vblocks;
2253 int util_free, util_valid, util_invalid;
2254 int rsvd_segs, overp_segs;
2255 int dirty_count, node_pages, meta_pages;
2256 int prefree_count, call_count, cp_count, bg_cp_count;
2257 int tot_segs, node_segs, data_segs, free_segs, free_secs;
2258 int bg_node_segs, bg_data_segs;
2259 int tot_blks, data_blks, node_blks;
2260 int bg_data_blks, bg_node_blks;
2261 int curseg[NR_CURSEG_TYPE];
2262 int cursec[NR_CURSEG_TYPE];
2263 int curzone[NR_CURSEG_TYPE];
2265 unsigned int segment_count[2];
2266 unsigned int block_count[2];
2267 unsigned int inplace_count;
2268 unsigned long long base_mem, cache_mem, page_mem;
2271 static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
2273 return (struct f2fs_stat_info *)sbi->stat_info;
2276 #define stat_inc_cp_count(si) ((si)->cp_count++)
2277 #define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++)
2278 #define stat_inc_call_count(si) ((si)->call_count++)
2279 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
2280 #define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++)
2281 #define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--)
2282 #define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext))
2283 #define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree))
2284 #define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest))
2285 #define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached))
2286 #define stat_inc_inline_xattr(inode) \
2288 if (f2fs_has_inline_xattr(inode)) \
2289 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
2291 #define stat_dec_inline_xattr(inode) \
2293 if (f2fs_has_inline_xattr(inode)) \
2294 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
2296 #define stat_inc_inline_inode(inode) \
2298 if (f2fs_has_inline_data(inode)) \
2299 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
2301 #define stat_dec_inline_inode(inode) \
2303 if (f2fs_has_inline_data(inode)) \
2304 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
2306 #define stat_inc_inline_dir(inode) \
2308 if (f2fs_has_inline_dentry(inode)) \
2309 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
2311 #define stat_dec_inline_dir(inode) \
2313 if (f2fs_has_inline_dentry(inode)) \
2314 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
2316 #define stat_inc_seg_type(sbi, curseg) \
2317 ((sbi)->segment_count[(curseg)->alloc_type]++)
2318 #define stat_inc_block_count(sbi, curseg) \
2319 ((sbi)->block_count[(curseg)->alloc_type]++)
2320 #define stat_inc_inplace_blocks(sbi) \
2321 (atomic_inc(&(sbi)->inplace_count))
2322 #define stat_inc_seg_count(sbi, type, gc_type) \
2324 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2326 if (type == SUM_TYPE_DATA) { \
2328 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
2331 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
2335 #define stat_inc_tot_blk_count(si, blks) \
2336 (si->tot_blks += (blks))
2338 #define stat_inc_data_blk_count(sbi, blks, gc_type) \
2340 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2341 stat_inc_tot_blk_count(si, blks); \
2342 si->data_blks += (blks); \
2343 si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \
2346 #define stat_inc_node_blk_count(sbi, blks, gc_type) \
2348 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2349 stat_inc_tot_blk_count(si, blks); \
2350 si->node_blks += (blks); \
2351 si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \
2354 int f2fs_build_stats(struct f2fs_sb_info *);
2355 void f2fs_destroy_stats(struct f2fs_sb_info *);
2356 int __init f2fs_create_root_stats(void);
2357 void f2fs_destroy_root_stats(void);
2359 #define stat_inc_cp_count(si)
2360 #define stat_inc_bg_cp_count(si)
2361 #define stat_inc_call_count(si)
2362 #define stat_inc_bggc_count(si)
2363 #define stat_inc_dirty_inode(sbi, type)
2364 #define stat_dec_dirty_inode(sbi, type)
2365 #define stat_inc_total_hit(sb)
2366 #define stat_inc_rbtree_node_hit(sb)
2367 #define stat_inc_largest_node_hit(sbi)
2368 #define stat_inc_cached_node_hit(sbi)
2369 #define stat_inc_inline_xattr(inode)
2370 #define stat_dec_inline_xattr(inode)
2371 #define stat_inc_inline_inode(inode)
2372 #define stat_dec_inline_inode(inode)
2373 #define stat_inc_inline_dir(inode)
2374 #define stat_dec_inline_dir(inode)
2375 #define stat_inc_seg_type(sbi, curseg)
2376 #define stat_inc_block_count(sbi, curseg)
2377 #define stat_inc_inplace_blocks(sbi)
2378 #define stat_inc_seg_count(sbi, type, gc_type)
2379 #define stat_inc_tot_blk_count(si, blks)
2380 #define stat_inc_data_blk_count(sbi, blks, gc_type)
2381 #define stat_inc_node_blk_count(sbi, blks, gc_type)
2383 static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
2384 static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
2385 static inline int __init f2fs_create_root_stats(void) { return 0; }
2386 static inline void f2fs_destroy_root_stats(void) { }
2389 extern const struct file_operations f2fs_dir_operations;
2390 extern const struct file_operations f2fs_file_operations;
2391 extern const struct inode_operations f2fs_file_inode_operations;
2392 extern const struct address_space_operations f2fs_dblock_aops;
2393 extern const struct address_space_operations f2fs_node_aops;
2394 extern const struct address_space_operations f2fs_meta_aops;
2395 extern const struct inode_operations f2fs_dir_inode_operations;
2396 extern const struct inode_operations f2fs_symlink_inode_operations;
2397 extern const struct inode_operations f2fs_encrypted_symlink_inode_operations;
2398 extern const struct inode_operations f2fs_special_inode_operations;
2399 extern struct kmem_cache *inode_entry_slab;
2404 bool f2fs_may_inline_data(struct inode *);
2405 bool f2fs_may_inline_dentry(struct inode *);
2406 void read_inline_data(struct page *, struct page *);
2407 bool truncate_inline_inode(struct page *, u64);
2408 int f2fs_read_inline_data(struct inode *, struct page *);
2409 int f2fs_convert_inline_page(struct dnode_of_data *, struct page *);
2410 int f2fs_convert_inline_inode(struct inode *);
2411 int f2fs_write_inline_data(struct inode *, struct page *);
2412 bool recover_inline_data(struct inode *, struct page *);
2413 struct f2fs_dir_entry *find_in_inline_dir(struct inode *,
2414 struct fscrypt_name *, struct page **);
2415 int make_empty_inline_dir(struct inode *inode, struct inode *, struct page *);
2416 int f2fs_add_inline_entry(struct inode *, const struct qstr *,
2417 const struct qstr *, struct inode *, nid_t, umode_t);
2418 void f2fs_delete_inline_entry(struct f2fs_dir_entry *, struct page *,
2419 struct inode *, struct inode *);
2420 bool f2fs_empty_inline_dir(struct inode *);
2421 int f2fs_read_inline_dir(struct file *, struct dir_context *,
2422 struct fscrypt_str *);
2423 int f2fs_inline_data_fiemap(struct inode *,
2424 struct fiemap_extent_info *, __u64, __u64);
2429 unsigned long f2fs_shrink_count(struct shrinker *, struct shrink_control *);
2430 unsigned long f2fs_shrink_scan(struct shrinker *, struct shrink_control *);
2431 void f2fs_join_shrinker(struct f2fs_sb_info *);
2432 void f2fs_leave_shrinker(struct f2fs_sb_info *);
2437 unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *, int);
2438 bool f2fs_init_extent_tree(struct inode *, struct f2fs_extent *);
2439 void f2fs_drop_extent_tree(struct inode *);
2440 unsigned int f2fs_destroy_extent_node(struct inode *);
2441 void f2fs_destroy_extent_tree(struct inode *);
2442 bool f2fs_lookup_extent_cache(struct inode *, pgoff_t, struct extent_info *);
2443 void f2fs_update_extent_cache(struct dnode_of_data *);
2444 void f2fs_update_extent_cache_range(struct dnode_of_data *dn,
2445 pgoff_t, block_t, unsigned int);
2446 void init_extent_cache_info(struct f2fs_sb_info *);
2447 int __init create_extent_cache(void);
2448 void destroy_extent_cache(void);
2453 static inline bool f2fs_encrypted_inode(struct inode *inode)
2455 return file_is_encrypt(inode);
2458 static inline void f2fs_set_encrypted_inode(struct inode *inode)
2460 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2461 file_set_encrypt(inode);
2465 static inline bool f2fs_bio_encrypted(struct bio *bio)
2467 return bio->bi_private != NULL;
2470 static inline int f2fs_sb_has_crypto(struct super_block *sb)
2472 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_ENCRYPT);
2475 static inline int f2fs_sb_mounted_hmsmr(struct super_block *sb)
2477 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_HMSMR);
2480 static inline void set_opt_mode(struct f2fs_sb_info *sbi, unsigned int mt)
2482 clear_opt(sbi, ADAPTIVE);
2483 clear_opt(sbi, LFS);
2486 case F2FS_MOUNT_ADAPTIVE:
2487 set_opt(sbi, ADAPTIVE);
2489 case F2FS_MOUNT_LFS:
2495 static inline bool f2fs_may_encrypt(struct inode *inode)
2497 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2498 umode_t mode = inode->i_mode;
2500 return (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode));
2506 #ifndef CONFIG_F2FS_FS_ENCRYPTION
2507 #define fscrypt_set_d_op(i)
2508 #define fscrypt_get_ctx fscrypt_notsupp_get_ctx
2509 #define fscrypt_release_ctx fscrypt_notsupp_release_ctx
2510 #define fscrypt_encrypt_page fscrypt_notsupp_encrypt_page
2511 #define fscrypt_decrypt_page fscrypt_notsupp_decrypt_page
2512 #define fscrypt_decrypt_bio_pages fscrypt_notsupp_decrypt_bio_pages
2513 #define fscrypt_pullback_bio_page fscrypt_notsupp_pullback_bio_page
2514 #define fscrypt_restore_control_page fscrypt_notsupp_restore_control_page
2515 #define fscrypt_zeroout_range fscrypt_notsupp_zeroout_range
2516 #define fscrypt_ioctl_set_policy fscrypt_notsupp_ioctl_set_policy
2517 #define fscrypt_ioctl_get_policy fscrypt_notsupp_ioctl_get_policy
2518 #define fscrypt_has_permitted_context fscrypt_notsupp_has_permitted_context
2519 #define fscrypt_inherit_context fscrypt_notsupp_inherit_context
2520 #define fscrypt_get_encryption_info fscrypt_notsupp_get_encryption_info
2521 #define fscrypt_put_encryption_info fscrypt_notsupp_put_encryption_info
2522 #define fscrypt_setup_filename fscrypt_notsupp_setup_filename
2523 #define fscrypt_free_filename fscrypt_notsupp_free_filename
2524 #define fscrypt_fname_encrypted_size fscrypt_notsupp_fname_encrypted_size
2525 #define fscrypt_fname_alloc_buffer fscrypt_notsupp_fname_alloc_buffer
2526 #define fscrypt_fname_free_buffer fscrypt_notsupp_fname_free_buffer
2527 #define fscrypt_fname_disk_to_usr fscrypt_notsupp_fname_disk_to_usr
2528 #define fscrypt_fname_usr_to_disk fscrypt_notsupp_fname_usr_to_disk