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>
23 #ifdef CONFIG_F2FS_CHECK_FS
24 #define f2fs_bug_on(sbi, condition) BUG_ON(condition)
25 #define f2fs_down_write(x, y) down_write_nest_lock(x, y)
27 #define f2fs_bug_on(sbi, condition) \
29 if (unlikely(condition)) { \
31 sbi->need_fsck = true; \
34 #define f2fs_down_write(x, y) down_write(x)
40 #define F2FS_MOUNT_BG_GC 0x00000001
41 #define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
42 #define F2FS_MOUNT_DISCARD 0x00000004
43 #define F2FS_MOUNT_NOHEAP 0x00000008
44 #define F2FS_MOUNT_XATTR_USER 0x00000010
45 #define F2FS_MOUNT_POSIX_ACL 0x00000020
46 #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
47 #define F2FS_MOUNT_INLINE_XATTR 0x00000080
48 #define F2FS_MOUNT_INLINE_DATA 0x00000100
49 #define F2FS_MOUNT_INLINE_DENTRY 0x00000200
50 #define F2FS_MOUNT_FLUSH_MERGE 0x00000400
51 #define F2FS_MOUNT_NOBARRIER 0x00000800
52 #define F2FS_MOUNT_FASTBOOT 0x00001000
54 #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
55 #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
56 #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
58 #define ver_after(a, b) (typecheck(unsigned long long, a) && \
59 typecheck(unsigned long long, b) && \
60 ((long long)((a) - (b)) > 0))
62 typedef u32 block_t; /*
63 * should not change u32, since it is the on-disk block
64 * address format, __le32.
68 struct f2fs_mount_info {
72 #define CRCPOLY_LE 0xedb88320
74 static inline __u32 f2fs_crc32(void *buf, size_t len)
76 unsigned char *p = (unsigned char *)buf;
77 __u32 crc = F2FS_SUPER_MAGIC;
82 for (i = 0; i < 8; i++)
83 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
88 static inline bool f2fs_crc_valid(__u32 blk_crc, void *buf, size_t buf_size)
90 return f2fs_crc32(buf, buf_size) == blk_crc;
94 * For checkpoint manager
116 * For CP/NAT/SIT/SSA readahead
126 /* for the list of ino */
128 ORPHAN_INO, /* for orphan ino list */
129 APPEND_INO, /* for append ino list */
130 UPDATE_INO, /* for update ino list */
131 MAX_INO_ENTRY, /* max. list */
135 struct list_head list; /* list head */
136 nid_t ino; /* inode number */
139 /* for the list of directory inodes */
140 struct dir_inode_entry {
141 struct list_head list; /* list head */
142 struct inode *inode; /* vfs inode pointer */
145 /* for the list of blockaddresses to be discarded */
146 struct discard_entry {
147 struct list_head list; /* list head */
148 block_t blkaddr; /* block address to be discarded */
149 int len; /* # of consecutive blocks of the discard */
152 /* for the list of fsync inodes, used only during recovery */
153 struct fsync_inode_entry {
154 struct list_head list; /* list head */
155 struct inode *inode; /* vfs inode pointer */
156 block_t blkaddr; /* block address locating the last fsync */
157 block_t last_dentry; /* block address locating the last dentry */
158 block_t last_inode; /* block address locating the last inode */
161 #define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
162 #define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
164 #define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
165 #define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
166 #define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
167 #define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
169 #define MAX_NAT_JENTRIES(sum) (NAT_JOURNAL_ENTRIES - nats_in_cursum(sum))
170 #define MAX_SIT_JENTRIES(sum) (SIT_JOURNAL_ENTRIES - sits_in_cursum(sum))
172 static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i)
174 int before = nats_in_cursum(rs);
175 rs->n_nats = cpu_to_le16(before + i);
179 static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i)
181 int before = sits_in_cursum(rs);
182 rs->n_sits = cpu_to_le16(before + i);
186 static inline bool __has_cursum_space(struct f2fs_summary_block *sum, int size,
189 if (type == NAT_JOURNAL)
190 return size <= MAX_NAT_JENTRIES(sum);
191 return size <= MAX_SIT_JENTRIES(sum);
197 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
198 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
200 #define F2FS_IOCTL_MAGIC 0xf5
201 #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
202 #define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
203 #define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
205 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
207 * ioctl commands in 32 bit emulation
209 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
210 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
214 * For INODE and NODE manager
216 /* for directory operations */
217 struct f2fs_dentry_ptr {
219 struct f2fs_dir_entry *dentry;
220 __u8 (*filename)[F2FS_SLOT_LEN];
224 static inline void make_dentry_ptr(struct f2fs_dentry_ptr *d,
228 struct f2fs_dentry_block *t = (struct f2fs_dentry_block *)src;
229 d->max = NR_DENTRY_IN_BLOCK;
230 d->bitmap = &t->dentry_bitmap;
231 d->dentry = t->dentry;
232 d->filename = t->filename;
234 struct f2fs_inline_dentry *t = (struct f2fs_inline_dentry *)src;
235 d->max = NR_INLINE_DENTRY;
236 d->bitmap = &t->dentry_bitmap;
237 d->dentry = t->dentry;
238 d->filename = t->filename;
243 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
244 * as its node offset to distinguish from index node blocks.
245 * But some bits are used to mark the node block.
247 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
250 ALLOC_NODE, /* allocate a new node page if needed */
251 LOOKUP_NODE, /* look up a node without readahead */
253 * look up a node with readahead called
258 #define F2FS_LINK_MAX 32000 /* maximum link count per file */
260 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
262 /* for in-memory extent cache entry */
263 #define F2FS_MIN_EXTENT_LEN 16 /* minimum extent length */
266 rwlock_t ext_lock; /* rwlock for consistency */
267 unsigned int fofs; /* start offset in a file */
268 u32 blk_addr; /* start block address of the extent */
269 unsigned int len; /* length of the extent */
273 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
275 #define FADVISE_COLD_BIT 0x01
276 #define FADVISE_LOST_PINO_BIT 0x02
278 #define DEF_DIR_LEVEL 0
280 struct f2fs_inode_info {
281 struct inode vfs_inode; /* serve a vfs inode */
282 unsigned long i_flags; /* keep an inode flags for ioctl */
283 unsigned char i_advise; /* use to give file attribute hints */
284 unsigned char i_dir_level; /* use for dentry level for large dir */
285 unsigned int i_current_depth; /* use only in directory structure */
286 unsigned int i_pino; /* parent inode number */
287 umode_t i_acl_mode; /* keep file acl mode temporarily */
289 /* Use below internally in f2fs*/
290 unsigned long flags; /* use to pass per-file flags */
291 struct rw_semaphore i_sem; /* protect fi info */
292 atomic_t dirty_pages; /* # of dirty pages */
293 f2fs_hash_t chash; /* hash value of given file name */
294 unsigned int clevel; /* maximum level of given file name */
295 nid_t i_xattr_nid; /* node id that contains xattrs */
296 unsigned long long xattr_ver; /* cp version of xattr modification */
297 struct extent_info ext; /* in-memory extent cache entry */
298 struct dir_inode_entry *dirty_dir; /* the pointer of dirty dir */
300 struct radix_tree_root inmem_root; /* radix tree for inmem pages */
301 struct list_head inmem_pages; /* inmemory pages managed by f2fs */
302 struct mutex inmem_lock; /* lock for inmemory pages */
305 static inline void get_extent_info(struct extent_info *ext,
306 struct f2fs_extent i_ext)
308 write_lock(&ext->ext_lock);
309 ext->fofs = le32_to_cpu(i_ext.fofs);
310 ext->blk_addr = le32_to_cpu(i_ext.blk_addr);
311 ext->len = le32_to_cpu(i_ext.len);
312 write_unlock(&ext->ext_lock);
315 static inline void set_raw_extent(struct extent_info *ext,
316 struct f2fs_extent *i_ext)
318 read_lock(&ext->ext_lock);
319 i_ext->fofs = cpu_to_le32(ext->fofs);
320 i_ext->blk_addr = cpu_to_le32(ext->blk_addr);
321 i_ext->len = cpu_to_le32(ext->len);
322 read_unlock(&ext->ext_lock);
325 struct f2fs_nm_info {
326 block_t nat_blkaddr; /* base disk address of NAT */
327 nid_t max_nid; /* maximum possible node ids */
328 nid_t available_nids; /* maximum available node ids */
329 nid_t next_scan_nid; /* the next nid to be scanned */
330 unsigned int ram_thresh; /* control the memory footprint */
332 /* NAT cache management */
333 struct radix_tree_root nat_root;/* root of the nat entry cache */
334 struct radix_tree_root nat_set_root;/* root of the nat set cache */
335 rwlock_t nat_tree_lock; /* protect nat_tree_lock */
336 struct list_head nat_entries; /* cached nat entry list (clean) */
337 unsigned int nat_cnt; /* the # of cached nat entries */
338 unsigned int dirty_nat_cnt; /* total num of nat entries in set */
340 /* free node ids management */
341 struct radix_tree_root free_nid_root;/* root of the free_nid cache */
342 struct list_head free_nid_list; /* a list for free nids */
343 spinlock_t free_nid_list_lock; /* protect free nid list */
344 unsigned int fcnt; /* the number of free node id */
345 struct mutex build_lock; /* lock for build free nids */
348 char *nat_bitmap; /* NAT bitmap pointer */
349 int bitmap_size; /* bitmap size */
353 * this structure is used as one of function parameters.
354 * all the information are dedicated to a given direct node block determined
355 * by the data offset in a file.
357 struct dnode_of_data {
358 struct inode *inode; /* vfs inode pointer */
359 struct page *inode_page; /* its inode page, NULL is possible */
360 struct page *node_page; /* cached direct node page */
361 nid_t nid; /* node id of the direct node block */
362 unsigned int ofs_in_node; /* data offset in the node page */
363 bool inode_page_locked; /* inode page is locked or not */
364 block_t data_blkaddr; /* block address of the node block */
367 static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
368 struct page *ipage, struct page *npage, nid_t nid)
370 memset(dn, 0, sizeof(*dn));
372 dn->inode_page = ipage;
373 dn->node_page = npage;
380 * By default, there are 6 active log areas across the whole main area.
381 * When considering hot and cold data separation to reduce cleaning overhead,
382 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
384 * In the current design, you should not change the numbers intentionally.
385 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
386 * logs individually according to the underlying devices. (default: 6)
387 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
388 * data and 8 for node logs.
390 #define NR_CURSEG_DATA_TYPE (3)
391 #define NR_CURSEG_NODE_TYPE (3)
392 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
395 CURSEG_HOT_DATA = 0, /* directory entry blocks */
396 CURSEG_WARM_DATA, /* data blocks */
397 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
398 CURSEG_HOT_NODE, /* direct node blocks of directory files */
399 CURSEG_WARM_NODE, /* direct node blocks of normal files */
400 CURSEG_COLD_NODE, /* indirect node blocks */
405 struct completion wait;
406 struct llist_node llnode;
410 struct flush_cmd_control {
411 struct task_struct *f2fs_issue_flush; /* flush thread */
412 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
413 struct llist_head issue_list; /* list for command issue */
414 struct llist_node *dispatch_list; /* list for command dispatch */
417 struct f2fs_sm_info {
418 struct sit_info *sit_info; /* whole segment information */
419 struct free_segmap_info *free_info; /* free segment information */
420 struct dirty_seglist_info *dirty_info; /* dirty segment information */
421 struct curseg_info *curseg_array; /* active segment information */
423 block_t seg0_blkaddr; /* block address of 0'th segment */
424 block_t main_blkaddr; /* start block address of main area */
425 block_t ssa_blkaddr; /* start block address of SSA area */
427 unsigned int segment_count; /* total # of segments */
428 unsigned int main_segments; /* # of segments in main area */
429 unsigned int reserved_segments; /* # of reserved segments */
430 unsigned int ovp_segments; /* # of overprovision segments */
432 /* a threshold to reclaim prefree segments */
433 unsigned int rec_prefree_segments;
435 /* for small discard management */
436 struct list_head discard_list; /* 4KB discard list */
437 int nr_discards; /* # of discards in the list */
438 int max_discards; /* max. discards to be issued */
440 struct list_head sit_entry_set; /* sit entry set list */
442 unsigned int ipu_policy; /* in-place-update policy */
443 unsigned int min_ipu_util; /* in-place-update threshold */
444 unsigned int min_fsync_blocks; /* threshold for fsync */
446 /* for flush command control */
447 struct flush_cmd_control *cmd_control_info;
455 * COUNT_TYPE for monitoring
457 * f2fs monitors the number of several block types such as on-writeback,
458 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
469 * The below are the page types of bios used in submit_bio().
470 * The available types are:
471 * DATA User data pages. It operates as async mode.
472 * NODE Node pages. It operates as async mode.
473 * META FS metadata pages such as SIT, NAT, CP.
474 * NR_PAGE_TYPE The number of page types.
475 * META_FLUSH Make sure the previous pages are written
476 * with waiting the bio's completion
477 * ... Only can be used with META.
479 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
488 struct f2fs_io_info {
489 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
490 int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
493 #define is_read_io(rw) (((rw) & 1) == READ)
494 struct f2fs_bio_info {
495 struct f2fs_sb_info *sbi; /* f2fs superblock */
496 struct bio *bio; /* bios to merge */
497 sector_t last_block_in_bio; /* last block number */
498 struct f2fs_io_info fio; /* store buffered io info. */
499 struct rw_semaphore io_rwsem; /* blocking op for bio */
502 struct f2fs_sb_info {
503 struct super_block *sb; /* pointer to VFS super block */
504 struct proc_dir_entry *s_proc; /* proc entry */
505 struct buffer_head *raw_super_buf; /* buffer head of raw sb */
506 struct f2fs_super_block *raw_super; /* raw super block pointer */
507 int s_dirty; /* dirty flag for checkpoint */
508 bool need_fsck; /* need fsck.f2fs to fix */
510 /* for node-related operations */
511 struct f2fs_nm_info *nm_info; /* node manager */
512 struct inode *node_inode; /* cache node blocks */
514 /* for segment-related operations */
515 struct f2fs_sm_info *sm_info; /* segment manager */
517 /* for bio operations */
518 struct f2fs_bio_info read_io; /* for read bios */
519 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */
522 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
523 struct inode *meta_inode; /* cache meta blocks */
524 struct mutex cp_mutex; /* checkpoint procedure lock */
525 struct rw_semaphore cp_rwsem; /* blocking FS operations */
526 struct rw_semaphore node_write; /* locking node writes */
527 struct mutex writepages; /* mutex for writepages() */
528 bool por_doing; /* recovery is doing or not */
529 wait_queue_head_t cp_wait;
531 /* for inode management */
532 struct radix_tree_root ino_root[MAX_INO_ENTRY]; /* ino entry array */
533 spinlock_t ino_lock[MAX_INO_ENTRY]; /* for ino entry lock */
534 struct list_head ino_list[MAX_INO_ENTRY]; /* inode list head */
535 unsigned long ino_num[MAX_INO_ENTRY]; /* number of entries */
537 /* for orphan inode, use 0'th array */
538 unsigned int max_orphans; /* max orphan inodes */
540 /* for directory inode management */
541 struct list_head dir_inode_list; /* dir inode list */
542 spinlock_t dir_inode_lock; /* for dir inode list lock */
544 /* basic filesystem units */
545 unsigned int log_sectors_per_block; /* log2 sectors per block */
546 unsigned int log_blocksize; /* log2 block size */
547 unsigned int blocksize; /* block size */
548 unsigned int root_ino_num; /* root inode number*/
549 unsigned int node_ino_num; /* node inode number*/
550 unsigned int meta_ino_num; /* meta inode number*/
551 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
552 unsigned int blocks_per_seg; /* blocks per segment */
553 unsigned int segs_per_sec; /* segments per section */
554 unsigned int secs_per_zone; /* sections per zone */
555 unsigned int total_sections; /* total section count */
556 unsigned int total_node_count; /* total node block count */
557 unsigned int total_valid_node_count; /* valid node block count */
558 unsigned int total_valid_inode_count; /* valid inode count */
559 int active_logs; /* # of active logs */
560 int dir_level; /* directory level */
562 block_t user_block_count; /* # of user blocks */
563 block_t total_valid_block_count; /* # of valid blocks */
564 block_t alloc_valid_block_count; /* # of allocated blocks */
565 block_t last_valid_block_count; /* for recovery */
566 u32 s_next_generation; /* for NFS support */
567 atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */
569 struct f2fs_mount_info mount_opt; /* mount options */
571 /* for cleaning operations */
572 struct mutex gc_mutex; /* mutex for GC */
573 struct f2fs_gc_kthread *gc_thread; /* GC thread */
574 unsigned int cur_victim_sec; /* current victim section num */
576 /* maximum # of trials to find a victim segment for SSR and GC */
577 unsigned int max_victim_search;
580 * for stat information.
581 * one is for the LFS mode, and the other is for the SSR mode.
583 #ifdef CONFIG_F2FS_STAT_FS
584 struct f2fs_stat_info *stat_info; /* FS status information */
585 unsigned int segment_count[2]; /* # of allocated segments */
586 unsigned int block_count[2]; /* # of allocated blocks */
587 int total_hit_ext, read_hit_ext; /* extent cache hit ratio */
588 int inline_inode; /* # of inline_data inodes */
589 int inline_dir; /* # of inline_dentry inodes */
590 int bg_gc; /* background gc calls */
591 unsigned int n_dirty_dirs; /* # of dir inodes */
593 unsigned int last_victim[2]; /* last victim segment # */
594 spinlock_t stat_lock; /* lock for stat operations */
596 /* For sysfs suppport */
597 struct kobject s_kobj;
598 struct completion s_kobj_unregister;
604 static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
606 return container_of(inode, struct f2fs_inode_info, vfs_inode);
609 static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
611 return sb->s_fs_info;
614 static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
616 return F2FS_SB(inode->i_sb);
619 static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
621 return F2FS_I_SB(mapping->host);
624 static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
626 return F2FS_M_SB(page->mapping);
629 static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
631 return (struct f2fs_super_block *)(sbi->raw_super);
634 static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
636 return (struct f2fs_checkpoint *)(sbi->ckpt);
639 static inline struct f2fs_node *F2FS_NODE(struct page *page)
641 return (struct f2fs_node *)page_address(page);
644 static inline struct f2fs_inode *F2FS_INODE(struct page *page)
646 return &((struct f2fs_node *)page_address(page))->i;
649 static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
651 return (struct f2fs_nm_info *)(sbi->nm_info);
654 static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
656 return (struct f2fs_sm_info *)(sbi->sm_info);
659 static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
661 return (struct sit_info *)(SM_I(sbi)->sit_info);
664 static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
666 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
669 static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
671 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
674 static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
676 return sbi->meta_inode->i_mapping;
679 static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
681 return sbi->node_inode->i_mapping;
684 static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info *sbi)
689 static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info *sbi)
694 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
696 return le64_to_cpu(cp->checkpoint_ver);
699 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
701 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
702 return ckpt_flags & f;
705 static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
707 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
709 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
712 static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
714 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
716 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
719 static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
721 down_read(&sbi->cp_rwsem);
724 static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
726 up_read(&sbi->cp_rwsem);
729 static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
731 f2fs_down_write(&sbi->cp_rwsem, &sbi->cp_mutex);
734 static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
736 up_write(&sbi->cp_rwsem);
740 * Check whether the given nid is within node id range.
742 static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
744 if (unlikely(nid < F2FS_ROOT_INO(sbi)))
746 if (unlikely(nid >= NM_I(sbi)->max_nid))
751 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
754 * Check whether the inode has blocks or not
756 static inline int F2FS_HAS_BLOCKS(struct inode *inode)
758 if (F2FS_I(inode)->i_xattr_nid)
759 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1;
761 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS;
764 static inline bool f2fs_has_xattr_block(unsigned int ofs)
766 return ofs == XATTR_NODE_OFFSET;
769 static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
770 struct inode *inode, blkcnt_t count)
772 block_t valid_block_count;
774 spin_lock(&sbi->stat_lock);
776 sbi->total_valid_block_count + (block_t)count;
777 if (unlikely(valid_block_count > sbi->user_block_count)) {
778 spin_unlock(&sbi->stat_lock);
781 inode->i_blocks += count;
782 sbi->total_valid_block_count = valid_block_count;
783 sbi->alloc_valid_block_count += (block_t)count;
784 spin_unlock(&sbi->stat_lock);
788 static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
792 spin_lock(&sbi->stat_lock);
793 f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
794 f2fs_bug_on(sbi, inode->i_blocks < count);
795 inode->i_blocks -= count;
796 sbi->total_valid_block_count -= (block_t)count;
797 spin_unlock(&sbi->stat_lock);
800 static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
802 atomic_inc(&sbi->nr_pages[count_type]);
803 F2FS_SET_SB_DIRT(sbi);
806 static inline void inode_inc_dirty_pages(struct inode *inode)
808 atomic_inc(&F2FS_I(inode)->dirty_pages);
809 if (S_ISDIR(inode->i_mode))
810 inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS);
813 static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
815 atomic_dec(&sbi->nr_pages[count_type]);
818 static inline void inode_dec_dirty_pages(struct inode *inode)
820 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode))
823 atomic_dec(&F2FS_I(inode)->dirty_pages);
825 if (S_ISDIR(inode->i_mode))
826 dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS);
829 static inline int get_pages(struct f2fs_sb_info *sbi, int count_type)
831 return atomic_read(&sbi->nr_pages[count_type]);
834 static inline int get_dirty_pages(struct inode *inode)
836 return atomic_read(&F2FS_I(inode)->dirty_pages);
839 static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
841 unsigned int pages_per_sec = sbi->segs_per_sec *
842 (1 << sbi->log_blocks_per_seg);
843 return ((get_pages(sbi, block_type) + pages_per_sec - 1)
844 >> sbi->log_blocks_per_seg) / sbi->segs_per_sec;
847 static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
849 return sbi->total_valid_block_count;
852 static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
854 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
856 /* return NAT or SIT bitmap */
857 if (flag == NAT_BITMAP)
858 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
859 else if (flag == SIT_BITMAP)
860 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
865 static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
867 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
870 if (le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload) > 0) {
871 if (flag == NAT_BITMAP)
872 return &ckpt->sit_nat_version_bitmap;
874 return (unsigned char *)ckpt + F2FS_BLKSIZE;
876 offset = (flag == NAT_BITMAP) ?
877 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
878 return &ckpt->sit_nat_version_bitmap + offset;
882 static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
885 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
886 unsigned long long ckpt_version = cur_cp_version(ckpt);
888 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
891 * odd numbered checkpoint should at cp segment 0
892 * and even segment must be at cp segment 1
894 if (!(ckpt_version & 1))
895 start_addr += sbi->blocks_per_seg;
900 static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
902 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
905 static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
908 block_t valid_block_count;
909 unsigned int valid_node_count;
911 spin_lock(&sbi->stat_lock);
913 valid_block_count = sbi->total_valid_block_count + 1;
914 if (unlikely(valid_block_count > sbi->user_block_count)) {
915 spin_unlock(&sbi->stat_lock);
919 valid_node_count = sbi->total_valid_node_count + 1;
920 if (unlikely(valid_node_count > sbi->total_node_count)) {
921 spin_unlock(&sbi->stat_lock);
928 sbi->alloc_valid_block_count++;
929 sbi->total_valid_node_count++;
930 sbi->total_valid_block_count++;
931 spin_unlock(&sbi->stat_lock);
936 static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
939 spin_lock(&sbi->stat_lock);
941 f2fs_bug_on(sbi, !sbi->total_valid_block_count);
942 f2fs_bug_on(sbi, !sbi->total_valid_node_count);
943 f2fs_bug_on(sbi, !inode->i_blocks);
946 sbi->total_valid_node_count--;
947 sbi->total_valid_block_count--;
949 spin_unlock(&sbi->stat_lock);
952 static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
954 return sbi->total_valid_node_count;
957 static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
959 spin_lock(&sbi->stat_lock);
960 f2fs_bug_on(sbi, sbi->total_valid_inode_count == sbi->total_node_count);
961 sbi->total_valid_inode_count++;
962 spin_unlock(&sbi->stat_lock);
965 static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
967 spin_lock(&sbi->stat_lock);
968 f2fs_bug_on(sbi, !sbi->total_valid_inode_count);
969 sbi->total_valid_inode_count--;
970 spin_unlock(&sbi->stat_lock);
973 static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi)
975 return sbi->total_valid_inode_count;
978 static inline void f2fs_put_page(struct page *page, int unlock)
984 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
987 page_cache_release(page);
990 static inline void f2fs_put_dnode(struct dnode_of_data *dn)
993 f2fs_put_page(dn->node_page, 1);
994 if (dn->inode_page && dn->node_page != dn->inode_page)
995 f2fs_put_page(dn->inode_page, 0);
996 dn->node_page = NULL;
997 dn->inode_page = NULL;
1000 static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
1003 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
1006 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
1011 entry = kmem_cache_alloc(cachep, flags);
1020 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1022 static inline bool IS_INODE(struct page *page)
1024 struct f2fs_node *p = F2FS_NODE(page);
1025 return RAW_IS_INODE(p);
1028 static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
1030 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
1033 static inline block_t datablock_addr(struct page *node_page,
1034 unsigned int offset)
1036 struct f2fs_node *raw_node;
1038 raw_node = F2FS_NODE(node_page);
1039 addr_array = blkaddr_in_node(raw_node);
1040 return le32_to_cpu(addr_array[offset]);
1043 static inline int f2fs_test_bit(unsigned int nr, char *addr)
1048 mask = 1 << (7 - (nr & 0x07));
1049 return mask & *addr;
1052 static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
1058 mask = 1 << (7 - (nr & 0x07));
1064 static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
1070 mask = 1 << (7 - (nr & 0x07));
1076 static inline void f2fs_change_bit(unsigned int nr, char *addr)
1081 mask = 1 << (7 - (nr & 0x07));
1085 /* used for f2fs_inode_info->flags */
1087 FI_NEW_INODE, /* indicate newly allocated inode */
1088 FI_DIRTY_INODE, /* indicate inode is dirty or not */
1089 FI_DIRTY_DIR, /* indicate directory has dirty pages */
1090 FI_INC_LINK, /* need to increment i_nlink */
1091 FI_ACL_MODE, /* indicate acl mode */
1092 FI_NO_ALLOC, /* should not allocate any blocks */
1093 FI_UPDATE_DIR, /* should update inode block for consistency */
1094 FI_DELAY_IPUT, /* used for the recovery */
1095 FI_NO_EXTENT, /* not to use the extent cache */
1096 FI_INLINE_XATTR, /* used for inline xattr */
1097 FI_INLINE_DATA, /* used for inline data*/
1098 FI_INLINE_DENTRY, /* used for inline dentry */
1099 FI_APPEND_WRITE, /* inode has appended data */
1100 FI_UPDATE_WRITE, /* inode has in-place-update data */
1101 FI_NEED_IPU, /* used for ipu per file */
1102 FI_ATOMIC_FILE, /* indicate atomic file */
1103 FI_VOLATILE_FILE, /* indicate volatile file */
1104 FI_DATA_EXIST, /* indicate data exists */
1107 static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag)
1109 if (!test_bit(flag, &fi->flags))
1110 set_bit(flag, &fi->flags);
1113 static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag)
1115 return test_bit(flag, &fi->flags);
1118 static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag)
1120 if (test_bit(flag, &fi->flags))
1121 clear_bit(flag, &fi->flags);
1124 static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode)
1126 fi->i_acl_mode = mode;
1127 set_inode_flag(fi, FI_ACL_MODE);
1130 static inline void get_inline_info(struct f2fs_inode_info *fi,
1131 struct f2fs_inode *ri)
1133 if (ri->i_inline & F2FS_INLINE_XATTR)
1134 set_inode_flag(fi, FI_INLINE_XATTR);
1135 if (ri->i_inline & F2FS_INLINE_DATA)
1136 set_inode_flag(fi, FI_INLINE_DATA);
1137 if (ri->i_inline & F2FS_INLINE_DENTRY)
1138 set_inode_flag(fi, FI_INLINE_DENTRY);
1139 if (ri->i_inline & F2FS_DATA_EXIST)
1140 set_inode_flag(fi, FI_DATA_EXIST);
1143 static inline void set_raw_inline(struct f2fs_inode_info *fi,
1144 struct f2fs_inode *ri)
1148 if (is_inode_flag_set(fi, FI_INLINE_XATTR))
1149 ri->i_inline |= F2FS_INLINE_XATTR;
1150 if (is_inode_flag_set(fi, FI_INLINE_DATA))
1151 ri->i_inline |= F2FS_INLINE_DATA;
1152 if (is_inode_flag_set(fi, FI_INLINE_DENTRY))
1153 ri->i_inline |= F2FS_INLINE_DENTRY;
1154 if (is_inode_flag_set(fi, FI_DATA_EXIST))
1155 ri->i_inline |= F2FS_DATA_EXIST;
1158 static inline int f2fs_has_inline_xattr(struct inode *inode)
1160 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR);
1163 static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi)
1165 if (f2fs_has_inline_xattr(&fi->vfs_inode))
1166 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
1167 return DEF_ADDRS_PER_INODE;
1170 static inline void *inline_xattr_addr(struct page *page)
1172 struct f2fs_inode *ri = F2FS_INODE(page);
1173 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
1174 F2FS_INLINE_XATTR_ADDRS]);
1177 static inline int inline_xattr_size(struct inode *inode)
1179 if (f2fs_has_inline_xattr(inode))
1180 return F2FS_INLINE_XATTR_ADDRS << 2;
1185 static inline int f2fs_has_inline_data(struct inode *inode)
1187 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA);
1190 static inline void f2fs_clear_inline_inode(struct inode *inode)
1192 clear_inode_flag(F2FS_I(inode), FI_INLINE_DATA);
1193 clear_inode_flag(F2FS_I(inode), FI_DATA_EXIST);
1196 static inline int f2fs_exist_data(struct inode *inode)
1198 return is_inode_flag_set(F2FS_I(inode), FI_DATA_EXIST);
1201 static inline bool f2fs_is_atomic_file(struct inode *inode)
1203 return is_inode_flag_set(F2FS_I(inode), FI_ATOMIC_FILE);
1206 static inline bool f2fs_is_volatile_file(struct inode *inode)
1208 return is_inode_flag_set(F2FS_I(inode), FI_VOLATILE_FILE);
1211 static inline void *inline_data_addr(struct page *page)
1213 struct f2fs_inode *ri = F2FS_INODE(page);
1214 return (void *)&(ri->i_addr[1]);
1217 static inline int f2fs_has_inline_dentry(struct inode *inode)
1219 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DENTRY);
1222 static inline void *inline_dentry_addr(struct page *page)
1224 struct f2fs_inode *ri = F2FS_INODE(page);
1225 return (void *)&(ri->i_addr[1]);
1228 static inline int f2fs_readonly(struct super_block *sb)
1230 return sb->s_flags & MS_RDONLY;
1233 static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
1235 return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1238 static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi)
1240 set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1241 sbi->sb->s_flags |= MS_RDONLY;
1244 #define get_inode_mode(i) \
1245 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1246 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1248 /* get offset of first page in next direct node */
1249 #define PGOFS_OF_NEXT_DNODE(pgofs, fi) \
1250 ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \
1251 (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \
1252 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi))
1257 int f2fs_sync_file(struct file *, loff_t, loff_t, int);
1258 void truncate_data_blocks(struct dnode_of_data *);
1259 int truncate_blocks(struct inode *, u64, bool);
1260 void f2fs_truncate(struct inode *);
1261 int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
1262 int f2fs_setattr(struct dentry *, struct iattr *);
1263 int truncate_hole(struct inode *, pgoff_t, pgoff_t);
1264 int truncate_data_blocks_range(struct dnode_of_data *, int);
1265 long f2fs_ioctl(struct file *, unsigned int, unsigned long);
1266 long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long);
1271 void f2fs_set_inode_flags(struct inode *);
1272 struct inode *f2fs_iget(struct super_block *, unsigned long);
1273 int try_to_free_nats(struct f2fs_sb_info *, int);
1274 void update_inode(struct inode *, struct page *);
1275 void update_inode_page(struct inode *);
1276 int f2fs_write_inode(struct inode *, struct writeback_control *);
1277 void f2fs_evict_inode(struct inode *);
1278 void handle_failed_inode(struct inode *);
1283 struct dentry *f2fs_get_parent(struct dentry *child);
1288 extern unsigned char f2fs_filetype_table[F2FS_FT_MAX];
1289 void set_de_type(struct f2fs_dir_entry *, struct inode *);
1290 struct f2fs_dir_entry *find_target_dentry(struct qstr *, int *,
1291 struct f2fs_dentry_ptr *);
1292 bool f2fs_fill_dentries(struct dir_context *, struct f2fs_dentry_ptr *,
1294 void do_make_empty_dir(struct inode *, struct inode *,
1295 struct f2fs_dentry_ptr *);
1296 struct page *init_inode_metadata(struct inode *, struct inode *,
1297 const struct qstr *, struct page *);
1298 void update_parent_metadata(struct inode *, struct inode *, unsigned int);
1299 int room_for_filename(const void *, int, int);
1300 void f2fs_drop_nlink(struct inode *, struct inode *, struct page *);
1301 struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *,
1303 struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
1304 ino_t f2fs_inode_by_name(struct inode *, struct qstr *);
1305 void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
1306 struct page *, struct inode *);
1307 int update_dent_inode(struct inode *, const struct qstr *);
1308 int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *);
1309 void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *,
1311 int f2fs_do_tmpfile(struct inode *, struct inode *);
1312 int f2fs_make_empty(struct inode *, struct inode *);
1313 bool f2fs_empty_dir(struct inode *);
1315 static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
1317 return __f2fs_add_link(dentry->d_parent->d_inode, &dentry->d_name,
1324 int f2fs_sync_fs(struct super_block *, int);
1325 extern __printf(3, 4)
1326 void f2fs_msg(struct super_block *, const char *, const char *, ...);
1331 f2fs_hash_t f2fs_dentry_hash(const struct qstr *);
1336 struct dnode_of_data;
1339 bool available_free_memory(struct f2fs_sb_info *, int);
1340 bool is_checkpointed_node(struct f2fs_sb_info *, nid_t);
1341 bool has_fsynced_inode(struct f2fs_sb_info *, nid_t);
1342 bool need_inode_block_update(struct f2fs_sb_info *, nid_t);
1343 void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
1344 int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);
1345 int truncate_inode_blocks(struct inode *, pgoff_t);
1346 int truncate_xattr_node(struct inode *, struct page *);
1347 int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t);
1348 void remove_inode_page(struct inode *);
1349 struct page *new_inode_page(struct inode *);
1350 struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *);
1351 void ra_node_page(struct f2fs_sb_info *, nid_t);
1352 struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
1353 struct page *get_node_page_ra(struct page *, int);
1354 void sync_inode_page(struct dnode_of_data *);
1355 int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *);
1356 bool alloc_nid(struct f2fs_sb_info *, nid_t *);
1357 void alloc_nid_done(struct f2fs_sb_info *, nid_t);
1358 void alloc_nid_failed(struct f2fs_sb_info *, nid_t);
1359 void recover_inline_xattr(struct inode *, struct page *);
1360 void recover_xattr_data(struct inode *, struct page *, block_t);
1361 int recover_inode_page(struct f2fs_sb_info *, struct page *);
1362 int restore_node_summary(struct f2fs_sb_info *, unsigned int,
1363 struct f2fs_summary_block *);
1364 void flush_nat_entries(struct f2fs_sb_info *);
1365 int build_node_manager(struct f2fs_sb_info *);
1366 void destroy_node_manager(struct f2fs_sb_info *);
1367 int __init create_node_manager_caches(void);
1368 void destroy_node_manager_caches(void);
1373 void register_inmem_page(struct inode *, struct page *);
1374 void invalidate_inmem_page(struct inode *, struct page *);
1375 void commit_inmem_pages(struct inode *, bool);
1376 void f2fs_balance_fs(struct f2fs_sb_info *);
1377 void f2fs_balance_fs_bg(struct f2fs_sb_info *);
1378 int f2fs_issue_flush(struct f2fs_sb_info *);
1379 int create_flush_cmd_control(struct f2fs_sb_info *);
1380 void destroy_flush_cmd_control(struct f2fs_sb_info *);
1381 void invalidate_blocks(struct f2fs_sb_info *, block_t);
1382 void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t);
1383 void clear_prefree_segments(struct f2fs_sb_info *);
1384 void release_discard_addrs(struct f2fs_sb_info *);
1385 void discard_next_dnode(struct f2fs_sb_info *, block_t);
1386 int npages_for_summary_flush(struct f2fs_sb_info *);
1387 void allocate_new_segments(struct f2fs_sb_info *);
1388 int f2fs_trim_fs(struct f2fs_sb_info *, struct fstrim_range *);
1389 struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
1390 void write_meta_page(struct f2fs_sb_info *, struct page *);
1391 void write_node_page(struct f2fs_sb_info *, struct page *,
1392 struct f2fs_io_info *, unsigned int, block_t, block_t *);
1393 void write_data_page(struct page *, struct dnode_of_data *, block_t *,
1394 struct f2fs_io_info *);
1395 void rewrite_data_page(struct page *, block_t, struct f2fs_io_info *);
1396 void recover_data_page(struct f2fs_sb_info *, struct page *,
1397 struct f2fs_summary *, block_t, block_t);
1398 void allocate_data_block(struct f2fs_sb_info *, struct page *,
1399 block_t, block_t *, struct f2fs_summary *, int);
1400 void f2fs_wait_on_page_writeback(struct page *, enum page_type);
1401 void write_data_summaries(struct f2fs_sb_info *, block_t);
1402 void write_node_summaries(struct f2fs_sb_info *, block_t);
1403 int lookup_journal_in_cursum(struct f2fs_summary_block *,
1404 int, unsigned int, int);
1405 void flush_sit_entries(struct f2fs_sb_info *, struct cp_control *);
1406 int build_segment_manager(struct f2fs_sb_info *);
1407 void destroy_segment_manager(struct f2fs_sb_info *);
1408 int __init create_segment_manager_caches(void);
1409 void destroy_segment_manager_caches(void);
1414 struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
1415 struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
1416 struct page *get_meta_page_ra(struct f2fs_sb_info *, pgoff_t);
1417 int ra_meta_pages(struct f2fs_sb_info *, block_t, int, int);
1418 long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
1419 void add_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
1420 void remove_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
1421 void release_dirty_inode(struct f2fs_sb_info *);
1422 bool exist_written_data(struct f2fs_sb_info *, nid_t, int);
1423 int acquire_orphan_inode(struct f2fs_sb_info *);
1424 void release_orphan_inode(struct f2fs_sb_info *);
1425 void add_orphan_inode(struct f2fs_sb_info *, nid_t);
1426 void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
1427 void recover_orphan_inodes(struct f2fs_sb_info *);
1428 int get_valid_checkpoint(struct f2fs_sb_info *);
1429 void update_dirty_page(struct inode *, struct page *);
1430 void add_dirty_dir_inode(struct inode *);
1431 void remove_dirty_dir_inode(struct inode *);
1432 void sync_dirty_dir_inodes(struct f2fs_sb_info *);
1433 void write_checkpoint(struct f2fs_sb_info *, struct cp_control *);
1434 void init_ino_entry_info(struct f2fs_sb_info *);
1435 int __init create_checkpoint_caches(void);
1436 void destroy_checkpoint_caches(void);
1441 void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int);
1442 int f2fs_submit_page_bio(struct f2fs_sb_info *, struct page *, block_t, int);
1443 void f2fs_submit_page_mbio(struct f2fs_sb_info *, struct page *, block_t,
1444 struct f2fs_io_info *);
1445 int reserve_new_block(struct dnode_of_data *);
1446 int f2fs_reserve_block(struct dnode_of_data *, pgoff_t);
1447 void update_extent_cache(block_t, struct dnode_of_data *);
1448 struct page *find_data_page(struct inode *, pgoff_t, bool);
1449 struct page *get_lock_data_page(struct inode *, pgoff_t);
1450 struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
1451 int do_write_data_page(struct page *, struct f2fs_io_info *);
1452 int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64);
1457 int start_gc_thread(struct f2fs_sb_info *);
1458 void stop_gc_thread(struct f2fs_sb_info *);
1459 block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *);
1460 int f2fs_gc(struct f2fs_sb_info *);
1461 void build_gc_manager(struct f2fs_sb_info *);
1462 int __init create_gc_caches(void);
1463 void destroy_gc_caches(void);
1468 int recover_fsync_data(struct f2fs_sb_info *);
1469 bool space_for_roll_forward(struct f2fs_sb_info *);
1474 #ifdef CONFIG_F2FS_STAT_FS
1475 struct f2fs_stat_info {
1476 struct list_head stat_list;
1477 struct f2fs_sb_info *sbi;
1478 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
1479 int main_area_segs, main_area_sections, main_area_zones;
1480 int hit_ext, total_ext;
1481 int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta;
1482 int nats, sits, fnids;
1483 int total_count, utilization;
1484 int bg_gc, inline_inode, inline_dir;
1485 unsigned int valid_count, valid_node_count, valid_inode_count;
1486 unsigned int bimodal, avg_vblocks;
1487 int util_free, util_valid, util_invalid;
1488 int rsvd_segs, overp_segs;
1489 int dirty_count, node_pages, meta_pages;
1490 int prefree_count, call_count, cp_count;
1491 int tot_segs, node_segs, data_segs, free_segs, free_secs;
1492 int tot_blks, data_blks, node_blks;
1493 int curseg[NR_CURSEG_TYPE];
1494 int cursec[NR_CURSEG_TYPE];
1495 int curzone[NR_CURSEG_TYPE];
1497 unsigned int segment_count[2];
1498 unsigned int block_count[2];
1499 unsigned base_mem, cache_mem;
1502 static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
1504 return (struct f2fs_stat_info *)sbi->stat_info;
1507 #define stat_inc_cp_count(si) ((si)->cp_count++)
1508 #define stat_inc_call_count(si) ((si)->call_count++)
1509 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1510 #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1511 #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
1512 #define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++)
1513 #define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++)
1514 #define stat_inc_inline_inode(inode) \
1516 if (f2fs_has_inline_data(inode)) \
1517 ((F2FS_I_SB(inode))->inline_inode++); \
1519 #define stat_dec_inline_inode(inode) \
1521 if (f2fs_has_inline_data(inode)) \
1522 ((F2FS_I_SB(inode))->inline_inode--); \
1524 #define stat_inc_inline_dir(inode) \
1526 if (f2fs_has_inline_dentry(inode)) \
1527 ((F2FS_I_SB(inode))->inline_dir++); \
1529 #define stat_dec_inline_dir(inode) \
1531 if (f2fs_has_inline_dentry(inode)) \
1532 ((F2FS_I_SB(inode))->inline_dir--); \
1534 #define stat_inc_seg_type(sbi, curseg) \
1535 ((sbi)->segment_count[(curseg)->alloc_type]++)
1536 #define stat_inc_block_count(sbi, curseg) \
1537 ((sbi)->block_count[(curseg)->alloc_type]++)
1539 #define stat_inc_seg_count(sbi, type) \
1541 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1543 if (type == SUM_TYPE_DATA) \
1549 #define stat_inc_tot_blk_count(si, blks) \
1550 (si->tot_blks += (blks))
1552 #define stat_inc_data_blk_count(sbi, blks) \
1554 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1555 stat_inc_tot_blk_count(si, blks); \
1556 si->data_blks += (blks); \
1559 #define stat_inc_node_blk_count(sbi, blks) \
1561 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1562 stat_inc_tot_blk_count(si, blks); \
1563 si->node_blks += (blks); \
1566 int f2fs_build_stats(struct f2fs_sb_info *);
1567 void f2fs_destroy_stats(struct f2fs_sb_info *);
1568 void __init f2fs_create_root_stats(void);
1569 void f2fs_destroy_root_stats(void);
1571 #define stat_inc_cp_count(si)
1572 #define stat_inc_call_count(si)
1573 #define stat_inc_bggc_count(si)
1574 #define stat_inc_dirty_dir(sbi)
1575 #define stat_dec_dirty_dir(sbi)
1576 #define stat_inc_total_hit(sb)
1577 #define stat_inc_read_hit(sb)
1578 #define stat_inc_inline_inode(inode)
1579 #define stat_dec_inline_inode(inode)
1580 #define stat_inc_inline_dir(inode)
1581 #define stat_dec_inline_dir(inode)
1582 #define stat_inc_seg_type(sbi, curseg)
1583 #define stat_inc_block_count(sbi, curseg)
1584 #define stat_inc_seg_count(si, type)
1585 #define stat_inc_tot_blk_count(si, blks)
1586 #define stat_inc_data_blk_count(si, blks)
1587 #define stat_inc_node_blk_count(sbi, blks)
1589 static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
1590 static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
1591 static inline void __init f2fs_create_root_stats(void) { }
1592 static inline void f2fs_destroy_root_stats(void) { }
1595 extern const struct file_operations f2fs_dir_operations;
1596 extern const struct file_operations f2fs_file_operations;
1597 extern const struct inode_operations f2fs_file_inode_operations;
1598 extern const struct address_space_operations f2fs_dblock_aops;
1599 extern const struct address_space_operations f2fs_node_aops;
1600 extern const struct address_space_operations f2fs_meta_aops;
1601 extern const struct inode_operations f2fs_dir_inode_operations;
1602 extern const struct inode_operations f2fs_symlink_inode_operations;
1603 extern const struct inode_operations f2fs_special_inode_operations;
1608 bool f2fs_may_inline(struct inode *);
1609 void read_inline_data(struct page *, struct page *);
1610 int f2fs_read_inline_data(struct inode *, struct page *);
1611 int f2fs_convert_inline_page(struct dnode_of_data *, struct page *);
1612 int f2fs_convert_inline_inode(struct inode *);
1613 int f2fs_write_inline_data(struct inode *, struct page *);
1614 void truncate_inline_data(struct page *, u64);
1615 bool recover_inline_data(struct inode *, struct page *);
1616 struct f2fs_dir_entry *find_in_inline_dir(struct inode *, struct qstr *,
1618 struct f2fs_dir_entry *f2fs_parent_inline_dir(struct inode *, struct page **);
1619 int make_empty_inline_dir(struct inode *inode, struct inode *, struct page *);
1620 int f2fs_add_inline_entry(struct inode *, const struct qstr *, struct inode *);
1621 void f2fs_delete_inline_entry(struct f2fs_dir_entry *, struct page *,
1622 struct inode *, struct inode *);
1623 bool f2fs_empty_inline_dir(struct inode *);
1624 int f2fs_read_inline_dir(struct file *, struct dir_context *);