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_FLUSH_MERGE 0x00000200
50 #define F2FS_MOUNT_NOBARRIER 0x00000400
52 #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
53 #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
54 #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
56 #define ver_after(a, b) (typecheck(unsigned long long, a) && \
57 typecheck(unsigned long long, b) && \
58 ((long long)((a) - (b)) > 0))
60 typedef u32 block_t; /*
61 * should not change u32, since it is the on-disk block
62 * address format, __le32.
66 struct f2fs_mount_info {
70 #define CRCPOLY_LE 0xedb88320
72 static inline __u32 f2fs_crc32(void *buf, size_t len)
74 unsigned char *p = (unsigned char *)buf;
75 __u32 crc = F2FS_SUPER_MAGIC;
80 for (i = 0; i < 8; i++)
81 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
86 static inline bool f2fs_crc_valid(__u32 blk_crc, void *buf, size_t buf_size)
88 return f2fs_crc32(buf, buf_size) == blk_crc;
92 * For checkpoint manager
114 * For CP/NAT/SIT/SSA readahead
124 /* for the list of ino */
126 ORPHAN_INO, /* for orphan ino list */
127 APPEND_INO, /* for append ino list */
128 UPDATE_INO, /* for update ino list */
129 MAX_INO_ENTRY, /* max. list */
133 struct list_head list; /* list head */
134 nid_t ino; /* inode number */
137 /* for the list of directory inodes */
138 struct dir_inode_entry {
139 struct list_head list; /* list head */
140 struct inode *inode; /* vfs inode pointer */
143 /* for the list of blockaddresses to be discarded */
144 struct discard_entry {
145 struct list_head list; /* list head */
146 block_t blkaddr; /* block address to be discarded */
147 int len; /* # of consecutive blocks of the discard */
150 /* for the list of fsync inodes, used only during recovery */
151 struct fsync_inode_entry {
152 struct list_head list; /* list head */
153 struct inode *inode; /* vfs inode pointer */
154 block_t blkaddr; /* block address locating the last fsync */
155 block_t last_dentry; /* block address locating the last dentry */
156 block_t last_inode; /* block address locating the last inode */
159 #define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
160 #define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
162 #define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
163 #define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
164 #define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
165 #define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
167 static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i)
169 int before = nats_in_cursum(rs);
170 rs->n_nats = cpu_to_le16(before + i);
174 static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i)
176 int before = sits_in_cursum(rs);
177 rs->n_sits = cpu_to_le16(before + i);
181 static inline bool __has_cursum_space(struct f2fs_summary_block *sum, int size,
184 if (type == NAT_JOURNAL)
185 return nats_in_cursum(sum) + size <= NAT_JOURNAL_ENTRIES;
187 return sits_in_cursum(sum) + size <= SIT_JOURNAL_ENTRIES;
193 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
194 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
196 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
198 * ioctl commands in 32 bit emulation
200 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
201 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
205 * For INODE and NODE manager
208 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
209 * as its node offset to distinguish from index node blocks.
210 * But some bits are used to mark the node block.
212 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
215 ALLOC_NODE, /* allocate a new node page if needed */
216 LOOKUP_NODE, /* look up a node without readahead */
218 * look up a node with readahead called
223 #define F2FS_LINK_MAX 32000 /* maximum link count per file */
225 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
227 /* for in-memory extent cache entry */
228 #define F2FS_MIN_EXTENT_LEN 16 /* minimum extent length */
231 rwlock_t ext_lock; /* rwlock for consistency */
232 unsigned int fofs; /* start offset in a file */
233 u32 blk_addr; /* start block address of the extent */
234 unsigned int len; /* length of the extent */
238 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
240 #define FADVISE_COLD_BIT 0x01
241 #define FADVISE_LOST_PINO_BIT 0x02
243 #define DEF_DIR_LEVEL 0
245 struct f2fs_inode_info {
246 struct inode vfs_inode; /* serve a vfs inode */
247 unsigned long i_flags; /* keep an inode flags for ioctl */
248 unsigned char i_advise; /* use to give file attribute hints */
249 unsigned char i_dir_level; /* use for dentry level for large dir */
250 unsigned int i_current_depth; /* use only in directory structure */
251 unsigned int i_pino; /* parent inode number */
252 umode_t i_acl_mode; /* keep file acl mode temporarily */
254 /* Use below internally in f2fs*/
255 unsigned long flags; /* use to pass per-file flags */
256 struct rw_semaphore i_sem; /* protect fi info */
257 atomic_t dirty_pages; /* # of dirty pages */
258 f2fs_hash_t chash; /* hash value of given file name */
259 unsigned int clevel; /* maximum level of given file name */
260 nid_t i_xattr_nid; /* node id that contains xattrs */
261 unsigned long long xattr_ver; /* cp version of xattr modification */
262 struct extent_info ext; /* in-memory extent cache entry */
263 struct dir_inode_entry *dirty_dir; /* the pointer of dirty dir */
266 static inline void get_extent_info(struct extent_info *ext,
267 struct f2fs_extent i_ext)
269 write_lock(&ext->ext_lock);
270 ext->fofs = le32_to_cpu(i_ext.fofs);
271 ext->blk_addr = le32_to_cpu(i_ext.blk_addr);
272 ext->len = le32_to_cpu(i_ext.len);
273 write_unlock(&ext->ext_lock);
276 static inline void set_raw_extent(struct extent_info *ext,
277 struct f2fs_extent *i_ext)
279 read_lock(&ext->ext_lock);
280 i_ext->fofs = cpu_to_le32(ext->fofs);
281 i_ext->blk_addr = cpu_to_le32(ext->blk_addr);
282 i_ext->len = cpu_to_le32(ext->len);
283 read_unlock(&ext->ext_lock);
286 struct f2fs_nm_info {
287 block_t nat_blkaddr; /* base disk address of NAT */
288 nid_t max_nid; /* maximum possible node ids */
289 nid_t available_nids; /* maximum available node ids */
290 nid_t next_scan_nid; /* the next nid to be scanned */
291 unsigned int ram_thresh; /* control the memory footprint */
293 /* NAT cache management */
294 struct radix_tree_root nat_root;/* root of the nat entry cache */
295 rwlock_t nat_tree_lock; /* protect nat_tree_lock */
296 unsigned int nat_cnt; /* the # of cached nat entries */
297 struct list_head nat_entries; /* cached nat entry list (clean) */
298 struct list_head dirty_nat_entries; /* cached nat entry list (dirty) */
299 struct list_head nat_entry_set; /* nat entry set list */
300 unsigned int dirty_nat_cnt; /* total num of nat entries in set */
302 /* free node ids management */
303 struct radix_tree_root free_nid_root;/* root of the free_nid cache */
304 struct list_head free_nid_list; /* a list for free nids */
305 spinlock_t free_nid_list_lock; /* protect free nid list */
306 unsigned int fcnt; /* the number of free node id */
307 struct mutex build_lock; /* lock for build free nids */
310 char *nat_bitmap; /* NAT bitmap pointer */
311 int bitmap_size; /* bitmap size */
315 * this structure is used as one of function parameters.
316 * all the information are dedicated to a given direct node block determined
317 * by the data offset in a file.
319 struct dnode_of_data {
320 struct inode *inode; /* vfs inode pointer */
321 struct page *inode_page; /* its inode page, NULL is possible */
322 struct page *node_page; /* cached direct node page */
323 nid_t nid; /* node id of the direct node block */
324 unsigned int ofs_in_node; /* data offset in the node page */
325 bool inode_page_locked; /* inode page is locked or not */
326 block_t data_blkaddr; /* block address of the node block */
329 static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
330 struct page *ipage, struct page *npage, nid_t nid)
332 memset(dn, 0, sizeof(*dn));
334 dn->inode_page = ipage;
335 dn->node_page = npage;
342 * By default, there are 6 active log areas across the whole main area.
343 * When considering hot and cold data separation to reduce cleaning overhead,
344 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
346 * In the current design, you should not change the numbers intentionally.
347 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
348 * logs individually according to the underlying devices. (default: 6)
349 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
350 * data and 8 for node logs.
352 #define NR_CURSEG_DATA_TYPE (3)
353 #define NR_CURSEG_NODE_TYPE (3)
354 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
357 CURSEG_HOT_DATA = 0, /* directory entry blocks */
358 CURSEG_WARM_DATA, /* data blocks */
359 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
360 CURSEG_HOT_NODE, /* direct node blocks of directory files */
361 CURSEG_WARM_NODE, /* direct node blocks of normal files */
362 CURSEG_COLD_NODE, /* indirect node blocks */
367 struct completion wait;
368 struct llist_node llnode;
372 struct flush_cmd_control {
373 struct task_struct *f2fs_issue_flush; /* flush thread */
374 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
375 struct llist_head issue_list; /* list for command issue */
376 struct llist_node *dispatch_list; /* list for command dispatch */
379 struct f2fs_sm_info {
380 struct sit_info *sit_info; /* whole segment information */
381 struct free_segmap_info *free_info; /* free segment information */
382 struct dirty_seglist_info *dirty_info; /* dirty segment information */
383 struct curseg_info *curseg_array; /* active segment information */
385 block_t seg0_blkaddr; /* block address of 0'th segment */
386 block_t main_blkaddr; /* start block address of main area */
387 block_t ssa_blkaddr; /* start block address of SSA area */
389 unsigned int segment_count; /* total # of segments */
390 unsigned int main_segments; /* # of segments in main area */
391 unsigned int reserved_segments; /* # of reserved segments */
392 unsigned int ovp_segments; /* # of overprovision segments */
394 /* a threshold to reclaim prefree segments */
395 unsigned int rec_prefree_segments;
397 /* for small discard management */
398 struct list_head discard_list; /* 4KB discard list */
399 int nr_discards; /* # of discards in the list */
400 int max_discards; /* max. discards to be issued */
402 struct list_head sit_entry_set; /* sit entry set list */
404 unsigned int ipu_policy; /* in-place-update policy */
405 unsigned int min_ipu_util; /* in-place-update threshold */
406 unsigned int min_fsync_blocks; /* threshold for fsync */
408 /* for flush command control */
409 struct flush_cmd_control *cmd_control_info;
417 * COUNT_TYPE for monitoring
419 * f2fs monitors the number of several block types such as on-writeback,
420 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
431 * The below are the page types of bios used in submit_bio().
432 * The available types are:
433 * DATA User data pages. It operates as async mode.
434 * NODE Node pages. It operates as async mode.
435 * META FS metadata pages such as SIT, NAT, CP.
436 * NR_PAGE_TYPE The number of page types.
437 * META_FLUSH Make sure the previous pages are written
438 * with waiting the bio's completion
439 * ... Only can be used with META.
441 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
450 struct f2fs_io_info {
451 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
452 int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
455 #define is_read_io(rw) (((rw) & 1) == READ)
456 struct f2fs_bio_info {
457 struct f2fs_sb_info *sbi; /* f2fs superblock */
458 struct bio *bio; /* bios to merge */
459 sector_t last_block_in_bio; /* last block number */
460 struct f2fs_io_info fio; /* store buffered io info. */
461 struct rw_semaphore io_rwsem; /* blocking op for bio */
464 struct f2fs_sb_info {
465 struct super_block *sb; /* pointer to VFS super block */
466 struct proc_dir_entry *s_proc; /* proc entry */
467 struct buffer_head *raw_super_buf; /* buffer head of raw sb */
468 struct f2fs_super_block *raw_super; /* raw super block pointer */
469 int s_dirty; /* dirty flag for checkpoint */
470 bool need_fsck; /* need fsck.f2fs to fix */
472 /* for node-related operations */
473 struct f2fs_nm_info *nm_info; /* node manager */
474 struct inode *node_inode; /* cache node blocks */
476 /* for segment-related operations */
477 struct f2fs_sm_info *sm_info; /* segment manager */
479 /* for bio operations */
480 struct f2fs_bio_info read_io; /* for read bios */
481 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */
482 struct completion *wait_io; /* for completion bios */
485 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
486 struct inode *meta_inode; /* cache meta blocks */
487 struct mutex cp_mutex; /* checkpoint procedure lock */
488 struct rw_semaphore cp_rwsem; /* blocking FS operations */
489 struct rw_semaphore node_write; /* locking node writes */
490 struct mutex writepages; /* mutex for writepages() */
491 bool por_doing; /* recovery is doing or not */
492 wait_queue_head_t cp_wait;
494 /* for inode management */
495 struct radix_tree_root ino_root[MAX_INO_ENTRY]; /* ino entry array */
496 spinlock_t ino_lock[MAX_INO_ENTRY]; /* for ino entry lock */
497 struct list_head ino_list[MAX_INO_ENTRY]; /* inode list head */
499 /* for orphan inode, use 0'th array */
500 unsigned int n_orphans; /* # of orphan inodes */
501 unsigned int max_orphans; /* max orphan inodes */
503 /* for directory inode management */
504 struct list_head dir_inode_list; /* dir inode list */
505 spinlock_t dir_inode_lock; /* for dir inode list lock */
507 /* basic filesystem units */
508 unsigned int log_sectors_per_block; /* log2 sectors per block */
509 unsigned int log_blocksize; /* log2 block size */
510 unsigned int blocksize; /* block size */
511 unsigned int root_ino_num; /* root inode number*/
512 unsigned int node_ino_num; /* node inode number*/
513 unsigned int meta_ino_num; /* meta inode number*/
514 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
515 unsigned int blocks_per_seg; /* blocks per segment */
516 unsigned int segs_per_sec; /* segments per section */
517 unsigned int secs_per_zone; /* sections per zone */
518 unsigned int total_sections; /* total section count */
519 unsigned int total_node_count; /* total node block count */
520 unsigned int total_valid_node_count; /* valid node block count */
521 unsigned int total_valid_inode_count; /* valid inode count */
522 int active_logs; /* # of active logs */
523 int dir_level; /* directory level */
525 block_t user_block_count; /* # of user blocks */
526 block_t total_valid_block_count; /* # of valid blocks */
527 block_t alloc_valid_block_count; /* # of allocated blocks */
528 block_t last_valid_block_count; /* for recovery */
529 u32 s_next_generation; /* for NFS support */
530 atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */
532 struct f2fs_mount_info mount_opt; /* mount options */
534 /* for cleaning operations */
535 struct mutex gc_mutex; /* mutex for GC */
536 struct f2fs_gc_kthread *gc_thread; /* GC thread */
537 unsigned int cur_victim_sec; /* current victim section num */
539 /* maximum # of trials to find a victim segment for SSR and GC */
540 unsigned int max_victim_search;
543 * for stat information.
544 * one is for the LFS mode, and the other is for the SSR mode.
546 #ifdef CONFIG_F2FS_STAT_FS
547 struct f2fs_stat_info *stat_info; /* FS status information */
548 unsigned int segment_count[2]; /* # of allocated segments */
549 unsigned int block_count[2]; /* # of allocated blocks */
550 int total_hit_ext, read_hit_ext; /* extent cache hit ratio */
551 int inline_inode; /* # of inline_data inodes */
552 int bg_gc; /* background gc calls */
553 unsigned int n_dirty_dirs; /* # of dir inodes */
555 unsigned int last_victim[2]; /* last victim segment # */
556 spinlock_t stat_lock; /* lock for stat operations */
558 /* For sysfs suppport */
559 struct kobject s_kobj;
560 struct completion s_kobj_unregister;
566 static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
568 return container_of(inode, struct f2fs_inode_info, vfs_inode);
571 static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
573 return sb->s_fs_info;
576 static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
578 return F2FS_SB(inode->i_sb);
581 static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
583 return F2FS_I_SB(mapping->host);
586 static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
588 return F2FS_M_SB(page->mapping);
591 static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
593 return (struct f2fs_super_block *)(sbi->raw_super);
596 static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
598 return (struct f2fs_checkpoint *)(sbi->ckpt);
601 static inline struct f2fs_node *F2FS_NODE(struct page *page)
603 return (struct f2fs_node *)page_address(page);
606 static inline struct f2fs_inode *F2FS_INODE(struct page *page)
608 return &((struct f2fs_node *)page_address(page))->i;
611 static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
613 return (struct f2fs_nm_info *)(sbi->nm_info);
616 static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
618 return (struct f2fs_sm_info *)(sbi->sm_info);
621 static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
623 return (struct sit_info *)(SM_I(sbi)->sit_info);
626 static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
628 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
631 static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
633 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
636 static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
638 return sbi->meta_inode->i_mapping;
641 static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
643 return sbi->node_inode->i_mapping;
646 static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info *sbi)
651 static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info *sbi)
656 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
658 return le64_to_cpu(cp->checkpoint_ver);
661 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
663 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
664 return ckpt_flags & f;
667 static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
669 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
671 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
674 static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
676 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
678 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
681 static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
683 down_read(&sbi->cp_rwsem);
686 static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
688 up_read(&sbi->cp_rwsem);
691 static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
693 f2fs_down_write(&sbi->cp_rwsem, &sbi->cp_mutex);
696 static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
698 up_write(&sbi->cp_rwsem);
702 * Check whether the given nid is within node id range.
704 static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
706 if (unlikely(nid < F2FS_ROOT_INO(sbi)))
708 if (unlikely(nid >= NM_I(sbi)->max_nid))
713 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
716 * Check whether the inode has blocks or not
718 static inline int F2FS_HAS_BLOCKS(struct inode *inode)
720 if (F2FS_I(inode)->i_xattr_nid)
721 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1;
723 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS;
726 static inline bool f2fs_has_xattr_block(unsigned int ofs)
728 return ofs == XATTR_NODE_OFFSET;
731 static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
732 struct inode *inode, blkcnt_t count)
734 block_t valid_block_count;
736 spin_lock(&sbi->stat_lock);
738 sbi->total_valid_block_count + (block_t)count;
739 if (unlikely(valid_block_count > sbi->user_block_count)) {
740 spin_unlock(&sbi->stat_lock);
743 inode->i_blocks += count;
744 sbi->total_valid_block_count = valid_block_count;
745 sbi->alloc_valid_block_count += (block_t)count;
746 spin_unlock(&sbi->stat_lock);
750 static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
754 spin_lock(&sbi->stat_lock);
755 f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
756 f2fs_bug_on(sbi, inode->i_blocks < count);
757 inode->i_blocks -= count;
758 sbi->total_valid_block_count -= (block_t)count;
759 spin_unlock(&sbi->stat_lock);
762 static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
764 atomic_inc(&sbi->nr_pages[count_type]);
765 F2FS_SET_SB_DIRT(sbi);
768 static inline void inode_inc_dirty_pages(struct inode *inode)
770 atomic_inc(&F2FS_I(inode)->dirty_pages);
771 if (S_ISDIR(inode->i_mode))
772 inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS);
775 static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
777 atomic_dec(&sbi->nr_pages[count_type]);
780 static inline void inode_dec_dirty_pages(struct inode *inode)
782 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode))
785 atomic_dec(&F2FS_I(inode)->dirty_pages);
787 if (S_ISDIR(inode->i_mode))
788 dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS);
791 static inline int get_pages(struct f2fs_sb_info *sbi, int count_type)
793 return atomic_read(&sbi->nr_pages[count_type]);
796 static inline int get_dirty_pages(struct inode *inode)
798 return atomic_read(&F2FS_I(inode)->dirty_pages);
801 static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
803 unsigned int pages_per_sec = sbi->segs_per_sec *
804 (1 << sbi->log_blocks_per_seg);
805 return ((get_pages(sbi, block_type) + pages_per_sec - 1)
806 >> sbi->log_blocks_per_seg) / sbi->segs_per_sec;
809 static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
811 return sbi->total_valid_block_count;
814 static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
816 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
818 /* return NAT or SIT bitmap */
819 if (flag == NAT_BITMAP)
820 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
821 else if (flag == SIT_BITMAP)
822 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
827 static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
829 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
832 if (le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload) > 0) {
833 if (flag == NAT_BITMAP)
834 return &ckpt->sit_nat_version_bitmap;
836 return (unsigned char *)ckpt + F2FS_BLKSIZE;
838 offset = (flag == NAT_BITMAP) ?
839 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
840 return &ckpt->sit_nat_version_bitmap + offset;
844 static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
847 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
848 unsigned long long ckpt_version = cur_cp_version(ckpt);
850 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
853 * odd numbered checkpoint should at cp segment 0
854 * and even segment must be at cp segment 1
856 if (!(ckpt_version & 1))
857 start_addr += sbi->blocks_per_seg;
862 static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
864 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
867 static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
870 block_t valid_block_count;
871 unsigned int valid_node_count;
873 spin_lock(&sbi->stat_lock);
875 valid_block_count = sbi->total_valid_block_count + 1;
876 if (unlikely(valid_block_count > sbi->user_block_count)) {
877 spin_unlock(&sbi->stat_lock);
881 valid_node_count = sbi->total_valid_node_count + 1;
882 if (unlikely(valid_node_count > sbi->total_node_count)) {
883 spin_unlock(&sbi->stat_lock);
890 sbi->alloc_valid_block_count++;
891 sbi->total_valid_node_count++;
892 sbi->total_valid_block_count++;
893 spin_unlock(&sbi->stat_lock);
898 static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
901 spin_lock(&sbi->stat_lock);
903 f2fs_bug_on(sbi, !sbi->total_valid_block_count);
904 f2fs_bug_on(sbi, !sbi->total_valid_node_count);
905 f2fs_bug_on(sbi, !inode->i_blocks);
908 sbi->total_valid_node_count--;
909 sbi->total_valid_block_count--;
911 spin_unlock(&sbi->stat_lock);
914 static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
916 return sbi->total_valid_node_count;
919 static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
921 spin_lock(&sbi->stat_lock);
922 f2fs_bug_on(sbi, sbi->total_valid_inode_count == sbi->total_node_count);
923 sbi->total_valid_inode_count++;
924 spin_unlock(&sbi->stat_lock);
927 static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
929 spin_lock(&sbi->stat_lock);
930 f2fs_bug_on(sbi, !sbi->total_valid_inode_count);
931 sbi->total_valid_inode_count--;
932 spin_unlock(&sbi->stat_lock);
935 static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi)
937 return sbi->total_valid_inode_count;
940 static inline void f2fs_put_page(struct page *page, int unlock)
946 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
949 page_cache_release(page);
952 static inline void f2fs_put_dnode(struct dnode_of_data *dn)
955 f2fs_put_page(dn->node_page, 1);
956 if (dn->inode_page && dn->node_page != dn->inode_page)
957 f2fs_put_page(dn->inode_page, 0);
958 dn->node_page = NULL;
959 dn->inode_page = NULL;
962 static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
965 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
968 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
973 entry = kmem_cache_alloc(cachep, flags);
982 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
984 static inline bool IS_INODE(struct page *page)
986 struct f2fs_node *p = F2FS_NODE(page);
987 return RAW_IS_INODE(p);
990 static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
992 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
995 static inline block_t datablock_addr(struct page *node_page,
998 struct f2fs_node *raw_node;
1000 raw_node = F2FS_NODE(node_page);
1001 addr_array = blkaddr_in_node(raw_node);
1002 return le32_to_cpu(addr_array[offset]);
1005 static inline int f2fs_test_bit(unsigned int nr, char *addr)
1010 mask = 1 << (7 - (nr & 0x07));
1011 return mask & *addr;
1014 static inline int f2fs_set_bit(unsigned int nr, char *addr)
1020 mask = 1 << (7 - (nr & 0x07));
1026 static inline int f2fs_clear_bit(unsigned int nr, char *addr)
1032 mask = 1 << (7 - (nr & 0x07));
1038 /* used for f2fs_inode_info->flags */
1040 FI_NEW_INODE, /* indicate newly allocated inode */
1041 FI_DIRTY_INODE, /* indicate inode is dirty or not */
1042 FI_DIRTY_DIR, /* indicate directory has dirty pages */
1043 FI_INC_LINK, /* need to increment i_nlink */
1044 FI_ACL_MODE, /* indicate acl mode */
1045 FI_NO_ALLOC, /* should not allocate any blocks */
1046 FI_UPDATE_DIR, /* should update inode block for consistency */
1047 FI_DELAY_IPUT, /* used for the recovery */
1048 FI_NO_EXTENT, /* not to use the extent cache */
1049 FI_INLINE_XATTR, /* used for inline xattr */
1050 FI_INLINE_DATA, /* used for inline data*/
1051 FI_APPEND_WRITE, /* inode has appended data */
1052 FI_UPDATE_WRITE, /* inode has in-place-update data */
1053 FI_NEED_IPU, /* used fo ipu for fdatasync */
1056 static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag)
1058 if (!test_bit(flag, &fi->flags))
1059 set_bit(flag, &fi->flags);
1062 static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag)
1064 return test_bit(flag, &fi->flags);
1067 static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag)
1069 if (test_bit(flag, &fi->flags))
1070 clear_bit(flag, &fi->flags);
1073 static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode)
1075 fi->i_acl_mode = mode;
1076 set_inode_flag(fi, FI_ACL_MODE);
1079 static inline int cond_clear_inode_flag(struct f2fs_inode_info *fi, int flag)
1081 if (is_inode_flag_set(fi, FI_ACL_MODE)) {
1082 clear_inode_flag(fi, FI_ACL_MODE);
1088 static inline void get_inline_info(struct f2fs_inode_info *fi,
1089 struct f2fs_inode *ri)
1091 if (ri->i_inline & F2FS_INLINE_XATTR)
1092 set_inode_flag(fi, FI_INLINE_XATTR);
1093 if (ri->i_inline & F2FS_INLINE_DATA)
1094 set_inode_flag(fi, FI_INLINE_DATA);
1097 static inline void set_raw_inline(struct f2fs_inode_info *fi,
1098 struct f2fs_inode *ri)
1102 if (is_inode_flag_set(fi, FI_INLINE_XATTR))
1103 ri->i_inline |= F2FS_INLINE_XATTR;
1104 if (is_inode_flag_set(fi, FI_INLINE_DATA))
1105 ri->i_inline |= F2FS_INLINE_DATA;
1108 static inline int f2fs_has_inline_xattr(struct inode *inode)
1110 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR);
1113 static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi)
1115 if (f2fs_has_inline_xattr(&fi->vfs_inode))
1116 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
1117 return DEF_ADDRS_PER_INODE;
1120 static inline void *inline_xattr_addr(struct page *page)
1122 struct f2fs_inode *ri = F2FS_INODE(page);
1123 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
1124 F2FS_INLINE_XATTR_ADDRS]);
1127 static inline int inline_xattr_size(struct inode *inode)
1129 if (f2fs_has_inline_xattr(inode))
1130 return F2FS_INLINE_XATTR_ADDRS << 2;
1135 static inline int f2fs_has_inline_data(struct inode *inode)
1137 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA);
1140 static inline void *inline_data_addr(struct page *page)
1142 struct f2fs_inode *ri = F2FS_INODE(page);
1143 return (void *)&(ri->i_addr[1]);
1146 static inline int f2fs_readonly(struct super_block *sb)
1148 return sb->s_flags & MS_RDONLY;
1151 static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
1153 return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1156 static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi)
1158 set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1159 sbi->sb->s_flags |= MS_RDONLY;
1162 #define get_inode_mode(i) \
1163 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1164 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1166 /* get offset of first page in next direct node */
1167 #define PGOFS_OF_NEXT_DNODE(pgofs, fi) \
1168 ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \
1169 (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \
1170 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi))
1175 int f2fs_sync_file(struct file *, loff_t, loff_t, int);
1176 void truncate_data_blocks(struct dnode_of_data *);
1177 int truncate_blocks(struct inode *, u64, bool);
1178 void f2fs_truncate(struct inode *);
1179 int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
1180 int f2fs_setattr(struct dentry *, struct iattr *);
1181 int truncate_hole(struct inode *, pgoff_t, pgoff_t);
1182 int truncate_data_blocks_range(struct dnode_of_data *, int);
1183 long f2fs_ioctl(struct file *, unsigned int, unsigned long);
1184 long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long);
1189 void f2fs_set_inode_flags(struct inode *);
1190 struct inode *f2fs_iget(struct super_block *, unsigned long);
1191 int try_to_free_nats(struct f2fs_sb_info *, int);
1192 void update_inode(struct inode *, struct page *);
1193 void update_inode_page(struct inode *);
1194 int f2fs_write_inode(struct inode *, struct writeback_control *);
1195 void f2fs_evict_inode(struct inode *);
1200 struct dentry *f2fs_get_parent(struct dentry *child);
1205 struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *,
1207 struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
1208 ino_t f2fs_inode_by_name(struct inode *, struct qstr *);
1209 void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
1210 struct page *, struct inode *);
1211 int update_dent_inode(struct inode *, const struct qstr *);
1212 int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *);
1213 void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *);
1214 int f2fs_do_tmpfile(struct inode *, struct inode *);
1215 int f2fs_make_empty(struct inode *, struct inode *);
1216 bool f2fs_empty_dir(struct inode *);
1218 static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
1220 return __f2fs_add_link(dentry->d_parent->d_inode, &dentry->d_name,
1227 int f2fs_sync_fs(struct super_block *, int);
1228 extern __printf(3, 4)
1229 void f2fs_msg(struct super_block *, const char *, const char *, ...);
1234 f2fs_hash_t f2fs_dentry_hash(const struct qstr *);
1239 struct dnode_of_data;
1242 bool available_free_memory(struct f2fs_sb_info *, int);
1243 bool is_checkpointed_node(struct f2fs_sb_info *, nid_t);
1244 bool has_fsynced_inode(struct f2fs_sb_info *, nid_t);
1245 bool need_inode_block_update(struct f2fs_sb_info *, nid_t);
1246 void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
1247 int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);
1248 int truncate_inode_blocks(struct inode *, pgoff_t);
1249 int truncate_xattr_node(struct inode *, struct page *);
1250 int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t);
1251 void remove_inode_page(struct inode *);
1252 struct page *new_inode_page(struct inode *);
1253 struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *);
1254 void ra_node_page(struct f2fs_sb_info *, nid_t);
1255 struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
1256 struct page *get_node_page_ra(struct page *, int);
1257 void sync_inode_page(struct dnode_of_data *);
1258 int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *);
1259 bool alloc_nid(struct f2fs_sb_info *, nid_t *);
1260 void alloc_nid_done(struct f2fs_sb_info *, nid_t);
1261 void alloc_nid_failed(struct f2fs_sb_info *, nid_t);
1262 void recover_inline_xattr(struct inode *, struct page *);
1263 void recover_xattr_data(struct inode *, struct page *, block_t);
1264 int recover_inode_page(struct f2fs_sb_info *, struct page *);
1265 int restore_node_summary(struct f2fs_sb_info *, unsigned int,
1266 struct f2fs_summary_block *);
1267 void flush_nat_entries(struct f2fs_sb_info *);
1268 int build_node_manager(struct f2fs_sb_info *);
1269 void destroy_node_manager(struct f2fs_sb_info *);
1270 int __init create_node_manager_caches(void);
1271 void destroy_node_manager_caches(void);
1276 void f2fs_balance_fs(struct f2fs_sb_info *);
1277 void f2fs_balance_fs_bg(struct f2fs_sb_info *);
1278 int f2fs_issue_flush(struct f2fs_sb_info *);
1279 int create_flush_cmd_control(struct f2fs_sb_info *);
1280 void destroy_flush_cmd_control(struct f2fs_sb_info *);
1281 void invalidate_blocks(struct f2fs_sb_info *, block_t);
1282 void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t);
1283 void clear_prefree_segments(struct f2fs_sb_info *);
1284 void release_discard_addrs(struct f2fs_sb_info *);
1285 void discard_next_dnode(struct f2fs_sb_info *, block_t);
1286 int npages_for_summary_flush(struct f2fs_sb_info *);
1287 void allocate_new_segments(struct f2fs_sb_info *);
1288 int f2fs_trim_fs(struct f2fs_sb_info *, struct fstrim_range *);
1289 struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
1290 void write_meta_page(struct f2fs_sb_info *, struct page *);
1291 void write_node_page(struct f2fs_sb_info *, struct page *,
1292 struct f2fs_io_info *, unsigned int, block_t, block_t *);
1293 void write_data_page(struct page *, struct dnode_of_data *, block_t *,
1294 struct f2fs_io_info *);
1295 void rewrite_data_page(struct page *, block_t, struct f2fs_io_info *);
1296 void recover_data_page(struct f2fs_sb_info *, struct page *,
1297 struct f2fs_summary *, block_t, block_t);
1298 void allocate_data_block(struct f2fs_sb_info *, struct page *,
1299 block_t, block_t *, struct f2fs_summary *, int);
1300 void f2fs_wait_on_page_writeback(struct page *, enum page_type);
1301 void write_data_summaries(struct f2fs_sb_info *, block_t);
1302 void write_node_summaries(struct f2fs_sb_info *, block_t);
1303 int lookup_journal_in_cursum(struct f2fs_summary_block *,
1304 int, unsigned int, int);
1305 void flush_sit_entries(struct f2fs_sb_info *, struct cp_control *);
1306 int build_segment_manager(struct f2fs_sb_info *);
1307 void destroy_segment_manager(struct f2fs_sb_info *);
1308 int __init create_segment_manager_caches(void);
1309 void destroy_segment_manager_caches(void);
1314 struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
1315 struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
1316 struct page *get_meta_page_ra(struct f2fs_sb_info *, pgoff_t);
1317 int ra_meta_pages(struct f2fs_sb_info *, block_t, int, int);
1318 long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
1319 void add_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
1320 void remove_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
1321 void release_dirty_inode(struct f2fs_sb_info *);
1322 bool exist_written_data(struct f2fs_sb_info *, nid_t, int);
1323 int acquire_orphan_inode(struct f2fs_sb_info *);
1324 void release_orphan_inode(struct f2fs_sb_info *);
1325 void add_orphan_inode(struct f2fs_sb_info *, nid_t);
1326 void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
1327 void recover_orphan_inodes(struct f2fs_sb_info *);
1328 int get_valid_checkpoint(struct f2fs_sb_info *);
1329 void update_dirty_page(struct inode *, struct page *);
1330 void add_dirty_dir_inode(struct inode *);
1331 void remove_dirty_dir_inode(struct inode *);
1332 void sync_dirty_dir_inodes(struct f2fs_sb_info *);
1333 void write_checkpoint(struct f2fs_sb_info *, struct cp_control *);
1334 void init_ino_entry_info(struct f2fs_sb_info *);
1335 int __init create_checkpoint_caches(void);
1336 void destroy_checkpoint_caches(void);
1341 void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int);
1342 int f2fs_submit_page_bio(struct f2fs_sb_info *, struct page *, block_t, int);
1343 void f2fs_submit_page_mbio(struct f2fs_sb_info *, struct page *, block_t,
1344 struct f2fs_io_info *);
1345 int reserve_new_block(struct dnode_of_data *);
1346 int f2fs_reserve_block(struct dnode_of_data *, pgoff_t);
1347 void update_extent_cache(block_t, struct dnode_of_data *);
1348 struct page *find_data_page(struct inode *, pgoff_t, bool);
1349 struct page *get_lock_data_page(struct inode *, pgoff_t);
1350 struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
1351 int do_write_data_page(struct page *, struct f2fs_io_info *);
1352 int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64);
1357 int start_gc_thread(struct f2fs_sb_info *);
1358 void stop_gc_thread(struct f2fs_sb_info *);
1359 block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *);
1360 int f2fs_gc(struct f2fs_sb_info *);
1361 void build_gc_manager(struct f2fs_sb_info *);
1362 int __init create_gc_caches(void);
1363 void destroy_gc_caches(void);
1368 int recover_fsync_data(struct f2fs_sb_info *);
1369 bool space_for_roll_forward(struct f2fs_sb_info *);
1374 #ifdef CONFIG_F2FS_STAT_FS
1375 struct f2fs_stat_info {
1376 struct list_head stat_list;
1377 struct f2fs_sb_info *sbi;
1378 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
1379 int main_area_segs, main_area_sections, main_area_zones;
1380 int hit_ext, total_ext;
1381 int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta;
1382 int nats, sits, fnids;
1383 int total_count, utilization;
1384 int bg_gc, inline_inode;
1385 unsigned int valid_count, valid_node_count, valid_inode_count;
1386 unsigned int bimodal, avg_vblocks;
1387 int util_free, util_valid, util_invalid;
1388 int rsvd_segs, overp_segs;
1389 int dirty_count, node_pages, meta_pages;
1390 int prefree_count, call_count, cp_count;
1391 int tot_segs, node_segs, data_segs, free_segs, free_secs;
1392 int tot_blks, data_blks, node_blks;
1393 int curseg[NR_CURSEG_TYPE];
1394 int cursec[NR_CURSEG_TYPE];
1395 int curzone[NR_CURSEG_TYPE];
1397 unsigned int segment_count[2];
1398 unsigned int block_count[2];
1399 unsigned base_mem, cache_mem;
1402 static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
1404 return (struct f2fs_stat_info *)sbi->stat_info;
1407 #define stat_inc_cp_count(si) ((si)->cp_count++)
1408 #define stat_inc_call_count(si) ((si)->call_count++)
1409 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1410 #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1411 #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
1412 #define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++)
1413 #define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++)
1414 #define stat_inc_inline_inode(inode) \
1416 if (f2fs_has_inline_data(inode)) \
1417 ((F2FS_I_SB(inode))->inline_inode++); \
1419 #define stat_dec_inline_inode(inode) \
1421 if (f2fs_has_inline_data(inode)) \
1422 ((F2FS_I_SB(inode))->inline_inode--); \
1425 #define stat_inc_seg_type(sbi, curseg) \
1426 ((sbi)->segment_count[(curseg)->alloc_type]++)
1427 #define stat_inc_block_count(sbi, curseg) \
1428 ((sbi)->block_count[(curseg)->alloc_type]++)
1430 #define stat_inc_seg_count(sbi, type) \
1432 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1434 if (type == SUM_TYPE_DATA) \
1440 #define stat_inc_tot_blk_count(si, blks) \
1441 (si->tot_blks += (blks))
1443 #define stat_inc_data_blk_count(sbi, blks) \
1445 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1446 stat_inc_tot_blk_count(si, blks); \
1447 si->data_blks += (blks); \
1450 #define stat_inc_node_blk_count(sbi, blks) \
1452 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1453 stat_inc_tot_blk_count(si, blks); \
1454 si->node_blks += (blks); \
1457 int f2fs_build_stats(struct f2fs_sb_info *);
1458 void f2fs_destroy_stats(struct f2fs_sb_info *);
1459 void __init f2fs_create_root_stats(void);
1460 void f2fs_destroy_root_stats(void);
1462 #define stat_inc_cp_count(si)
1463 #define stat_inc_call_count(si)
1464 #define stat_inc_bggc_count(si)
1465 #define stat_inc_dirty_dir(sbi)
1466 #define stat_dec_dirty_dir(sbi)
1467 #define stat_inc_total_hit(sb)
1468 #define stat_inc_read_hit(sb)
1469 #define stat_inc_inline_inode(inode)
1470 #define stat_dec_inline_inode(inode)
1471 #define stat_inc_seg_type(sbi, curseg)
1472 #define stat_inc_block_count(sbi, curseg)
1473 #define stat_inc_seg_count(si, type)
1474 #define stat_inc_tot_blk_count(si, blks)
1475 #define stat_inc_data_blk_count(si, blks)
1476 #define stat_inc_node_blk_count(sbi, blks)
1478 static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
1479 static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
1480 static inline void __init f2fs_create_root_stats(void) { }
1481 static inline void f2fs_destroy_root_stats(void) { }
1484 extern const struct file_operations f2fs_dir_operations;
1485 extern const struct file_operations f2fs_file_operations;
1486 extern const struct inode_operations f2fs_file_inode_operations;
1487 extern const struct address_space_operations f2fs_dblock_aops;
1488 extern const struct address_space_operations f2fs_node_aops;
1489 extern const struct address_space_operations f2fs_meta_aops;
1490 extern const struct inode_operations f2fs_dir_inode_operations;
1491 extern const struct inode_operations f2fs_symlink_inode_operations;
1492 extern const struct inode_operations f2fs_special_inode_operations;
1497 bool f2fs_may_inline(struct inode *);
1498 int f2fs_read_inline_data(struct inode *, struct page *);
1499 int f2fs_convert_inline_data(struct inode *, pgoff_t, struct page *);
1500 int f2fs_write_inline_data(struct inode *, struct page *, unsigned int);
1501 void truncate_inline_data(struct inode *, u64);
1502 bool recover_inline_data(struct inode *, struct page *);