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 /* for inner inode cache management */
503 struct inode_management {
504 struct radix_tree_root ino_root; /* ino entry array */
505 spinlock_t ino_lock; /* for ino entry lock */
506 struct list_head ino_list; /* inode list head */
507 unsigned long ino_num; /* number of entries */
510 struct f2fs_sb_info {
511 struct super_block *sb; /* pointer to VFS super block */
512 struct proc_dir_entry *s_proc; /* proc entry */
513 struct buffer_head *raw_super_buf; /* buffer head of raw sb */
514 struct f2fs_super_block *raw_super; /* raw super block pointer */
515 int s_dirty; /* dirty flag for checkpoint */
516 bool need_fsck; /* need fsck.f2fs to fix */
518 /* for node-related operations */
519 struct f2fs_nm_info *nm_info; /* node manager */
520 struct inode *node_inode; /* cache node blocks */
522 /* for segment-related operations */
523 struct f2fs_sm_info *sm_info; /* segment manager */
525 /* for bio operations */
526 struct f2fs_bio_info read_io; /* for read bios */
527 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */
530 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
531 struct inode *meta_inode; /* cache meta blocks */
532 struct mutex cp_mutex; /* checkpoint procedure lock */
533 struct rw_semaphore cp_rwsem; /* blocking FS operations */
534 struct rw_semaphore node_write; /* locking node writes */
535 struct mutex writepages; /* mutex for writepages() */
536 bool por_doing; /* recovery is doing or not */
537 wait_queue_head_t cp_wait;
539 struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */
541 /* for orphan inode, use 0'th array */
542 unsigned int max_orphans; /* max orphan inodes */
544 /* for directory inode management */
545 struct list_head dir_inode_list; /* dir inode list */
546 spinlock_t dir_inode_lock; /* for dir inode list lock */
548 /* basic filesystem units */
549 unsigned int log_sectors_per_block; /* log2 sectors per block */
550 unsigned int log_blocksize; /* log2 block size */
551 unsigned int blocksize; /* block size */
552 unsigned int root_ino_num; /* root inode number*/
553 unsigned int node_ino_num; /* node inode number*/
554 unsigned int meta_ino_num; /* meta inode number*/
555 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
556 unsigned int blocks_per_seg; /* blocks per segment */
557 unsigned int segs_per_sec; /* segments per section */
558 unsigned int secs_per_zone; /* sections per zone */
559 unsigned int total_sections; /* total section count */
560 unsigned int total_node_count; /* total node block count */
561 unsigned int total_valid_node_count; /* valid node block count */
562 unsigned int total_valid_inode_count; /* valid inode count */
563 int active_logs; /* # of active logs */
564 int dir_level; /* directory level */
566 block_t user_block_count; /* # of user blocks */
567 block_t total_valid_block_count; /* # of valid blocks */
568 block_t alloc_valid_block_count; /* # of allocated blocks */
569 block_t last_valid_block_count; /* for recovery */
570 u32 s_next_generation; /* for NFS support */
571 atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */
573 struct f2fs_mount_info mount_opt; /* mount options */
575 /* for cleaning operations */
576 struct mutex gc_mutex; /* mutex for GC */
577 struct f2fs_gc_kthread *gc_thread; /* GC thread */
578 unsigned int cur_victim_sec; /* current victim section num */
580 /* maximum # of trials to find a victim segment for SSR and GC */
581 unsigned int max_victim_search;
584 * for stat information.
585 * one is for the LFS mode, and the other is for the SSR mode.
587 #ifdef CONFIG_F2FS_STAT_FS
588 struct f2fs_stat_info *stat_info; /* FS status information */
589 unsigned int segment_count[2]; /* # of allocated segments */
590 unsigned int block_count[2]; /* # of allocated blocks */
591 int total_hit_ext, read_hit_ext; /* extent cache hit ratio */
592 int inline_inode; /* # of inline_data inodes */
593 int inline_dir; /* # of inline_dentry inodes */
594 int bg_gc; /* background gc calls */
595 unsigned int n_dirty_dirs; /* # of dir inodes */
597 unsigned int last_victim[2]; /* last victim segment # */
598 spinlock_t stat_lock; /* lock for stat operations */
600 /* For sysfs suppport */
601 struct kobject s_kobj;
602 struct completion s_kobj_unregister;
608 static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
610 return container_of(inode, struct f2fs_inode_info, vfs_inode);
613 static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
615 return sb->s_fs_info;
618 static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
620 return F2FS_SB(inode->i_sb);
623 static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
625 return F2FS_I_SB(mapping->host);
628 static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
630 return F2FS_M_SB(page->mapping);
633 static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
635 return (struct f2fs_super_block *)(sbi->raw_super);
638 static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
640 return (struct f2fs_checkpoint *)(sbi->ckpt);
643 static inline struct f2fs_node *F2FS_NODE(struct page *page)
645 return (struct f2fs_node *)page_address(page);
648 static inline struct f2fs_inode *F2FS_INODE(struct page *page)
650 return &((struct f2fs_node *)page_address(page))->i;
653 static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
655 return (struct f2fs_nm_info *)(sbi->nm_info);
658 static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
660 return (struct f2fs_sm_info *)(sbi->sm_info);
663 static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
665 return (struct sit_info *)(SM_I(sbi)->sit_info);
668 static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
670 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
673 static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
675 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
678 static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
680 return sbi->meta_inode->i_mapping;
683 static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
685 return sbi->node_inode->i_mapping;
688 static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info *sbi)
693 static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info *sbi)
698 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
700 return le64_to_cpu(cp->checkpoint_ver);
703 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
705 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
706 return ckpt_flags & f;
709 static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
711 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
713 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
716 static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
718 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
720 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
723 static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
725 down_read(&sbi->cp_rwsem);
728 static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
730 up_read(&sbi->cp_rwsem);
733 static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
735 f2fs_down_write(&sbi->cp_rwsem, &sbi->cp_mutex);
738 static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
740 up_write(&sbi->cp_rwsem);
744 * Check whether the given nid is within node id range.
746 static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
748 if (unlikely(nid < F2FS_ROOT_INO(sbi)))
750 if (unlikely(nid >= NM_I(sbi)->max_nid))
755 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
758 * Check whether the inode has blocks or not
760 static inline int F2FS_HAS_BLOCKS(struct inode *inode)
762 if (F2FS_I(inode)->i_xattr_nid)
763 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1;
765 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS;
768 static inline bool f2fs_has_xattr_block(unsigned int ofs)
770 return ofs == XATTR_NODE_OFFSET;
773 static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
774 struct inode *inode, blkcnt_t count)
776 block_t valid_block_count;
778 spin_lock(&sbi->stat_lock);
780 sbi->total_valid_block_count + (block_t)count;
781 if (unlikely(valid_block_count > sbi->user_block_count)) {
782 spin_unlock(&sbi->stat_lock);
785 inode->i_blocks += count;
786 sbi->total_valid_block_count = valid_block_count;
787 sbi->alloc_valid_block_count += (block_t)count;
788 spin_unlock(&sbi->stat_lock);
792 static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
796 spin_lock(&sbi->stat_lock);
797 f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
798 f2fs_bug_on(sbi, inode->i_blocks < count);
799 inode->i_blocks -= count;
800 sbi->total_valid_block_count -= (block_t)count;
801 spin_unlock(&sbi->stat_lock);
804 static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
806 atomic_inc(&sbi->nr_pages[count_type]);
807 F2FS_SET_SB_DIRT(sbi);
810 static inline void inode_inc_dirty_pages(struct inode *inode)
812 atomic_inc(&F2FS_I(inode)->dirty_pages);
813 if (S_ISDIR(inode->i_mode))
814 inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS);
817 static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
819 atomic_dec(&sbi->nr_pages[count_type]);
822 static inline void inode_dec_dirty_pages(struct inode *inode)
824 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode))
827 atomic_dec(&F2FS_I(inode)->dirty_pages);
829 if (S_ISDIR(inode->i_mode))
830 dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS);
833 static inline int get_pages(struct f2fs_sb_info *sbi, int count_type)
835 return atomic_read(&sbi->nr_pages[count_type]);
838 static inline int get_dirty_pages(struct inode *inode)
840 return atomic_read(&F2FS_I(inode)->dirty_pages);
843 static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
845 unsigned int pages_per_sec = sbi->segs_per_sec *
846 (1 << sbi->log_blocks_per_seg);
847 return ((get_pages(sbi, block_type) + pages_per_sec - 1)
848 >> sbi->log_blocks_per_seg) / sbi->segs_per_sec;
851 static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
853 return sbi->total_valid_block_count;
856 static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
858 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
860 /* return NAT or SIT bitmap */
861 if (flag == NAT_BITMAP)
862 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
863 else if (flag == SIT_BITMAP)
864 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
869 static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
871 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
874 if (le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload) > 0) {
875 if (flag == NAT_BITMAP)
876 return &ckpt->sit_nat_version_bitmap;
878 return (unsigned char *)ckpt + F2FS_BLKSIZE;
880 offset = (flag == NAT_BITMAP) ?
881 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
882 return &ckpt->sit_nat_version_bitmap + offset;
886 static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
889 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
890 unsigned long long ckpt_version = cur_cp_version(ckpt);
892 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
895 * odd numbered checkpoint should at cp segment 0
896 * and even segment must be at cp segment 1
898 if (!(ckpt_version & 1))
899 start_addr += sbi->blocks_per_seg;
904 static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
906 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
909 static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
912 block_t valid_block_count;
913 unsigned int valid_node_count;
915 spin_lock(&sbi->stat_lock);
917 valid_block_count = sbi->total_valid_block_count + 1;
918 if (unlikely(valid_block_count > sbi->user_block_count)) {
919 spin_unlock(&sbi->stat_lock);
923 valid_node_count = sbi->total_valid_node_count + 1;
924 if (unlikely(valid_node_count > sbi->total_node_count)) {
925 spin_unlock(&sbi->stat_lock);
932 sbi->alloc_valid_block_count++;
933 sbi->total_valid_node_count++;
934 sbi->total_valid_block_count++;
935 spin_unlock(&sbi->stat_lock);
940 static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
943 spin_lock(&sbi->stat_lock);
945 f2fs_bug_on(sbi, !sbi->total_valid_block_count);
946 f2fs_bug_on(sbi, !sbi->total_valid_node_count);
947 f2fs_bug_on(sbi, !inode->i_blocks);
950 sbi->total_valid_node_count--;
951 sbi->total_valid_block_count--;
953 spin_unlock(&sbi->stat_lock);
956 static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
958 return sbi->total_valid_node_count;
961 static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
963 spin_lock(&sbi->stat_lock);
964 f2fs_bug_on(sbi, sbi->total_valid_inode_count == sbi->total_node_count);
965 sbi->total_valid_inode_count++;
966 spin_unlock(&sbi->stat_lock);
969 static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
971 spin_lock(&sbi->stat_lock);
972 f2fs_bug_on(sbi, !sbi->total_valid_inode_count);
973 sbi->total_valid_inode_count--;
974 spin_unlock(&sbi->stat_lock);
977 static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi)
979 return sbi->total_valid_inode_count;
982 static inline void f2fs_put_page(struct page *page, int unlock)
988 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
991 page_cache_release(page);
994 static inline void f2fs_put_dnode(struct dnode_of_data *dn)
997 f2fs_put_page(dn->node_page, 1);
998 if (dn->inode_page && dn->node_page != dn->inode_page)
999 f2fs_put_page(dn->inode_page, 0);
1000 dn->node_page = NULL;
1001 dn->inode_page = NULL;
1004 static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
1007 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
1010 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
1015 entry = kmem_cache_alloc(cachep, flags);
1024 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1026 static inline bool IS_INODE(struct page *page)
1028 struct f2fs_node *p = F2FS_NODE(page);
1029 return RAW_IS_INODE(p);
1032 static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
1034 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
1037 static inline block_t datablock_addr(struct page *node_page,
1038 unsigned int offset)
1040 struct f2fs_node *raw_node;
1042 raw_node = F2FS_NODE(node_page);
1043 addr_array = blkaddr_in_node(raw_node);
1044 return le32_to_cpu(addr_array[offset]);
1047 static inline int f2fs_test_bit(unsigned int nr, char *addr)
1052 mask = 1 << (7 - (nr & 0x07));
1053 return mask & *addr;
1056 static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
1062 mask = 1 << (7 - (nr & 0x07));
1068 static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
1074 mask = 1 << (7 - (nr & 0x07));
1080 static inline void f2fs_change_bit(unsigned int nr, char *addr)
1085 mask = 1 << (7 - (nr & 0x07));
1089 /* used for f2fs_inode_info->flags */
1091 FI_NEW_INODE, /* indicate newly allocated inode */
1092 FI_DIRTY_INODE, /* indicate inode is dirty or not */
1093 FI_DIRTY_DIR, /* indicate directory has dirty pages */
1094 FI_INC_LINK, /* need to increment i_nlink */
1095 FI_ACL_MODE, /* indicate acl mode */
1096 FI_NO_ALLOC, /* should not allocate any blocks */
1097 FI_UPDATE_DIR, /* should update inode block for consistency */
1098 FI_DELAY_IPUT, /* used for the recovery */
1099 FI_NO_EXTENT, /* not to use the extent cache */
1100 FI_INLINE_XATTR, /* used for inline xattr */
1101 FI_INLINE_DATA, /* used for inline data*/
1102 FI_INLINE_DENTRY, /* used for inline dentry */
1103 FI_APPEND_WRITE, /* inode has appended data */
1104 FI_UPDATE_WRITE, /* inode has in-place-update data */
1105 FI_NEED_IPU, /* used for ipu per file */
1106 FI_ATOMIC_FILE, /* indicate atomic file */
1107 FI_VOLATILE_FILE, /* indicate volatile file */
1108 FI_DATA_EXIST, /* indicate data exists */
1111 static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag)
1113 if (!test_bit(flag, &fi->flags))
1114 set_bit(flag, &fi->flags);
1117 static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag)
1119 return test_bit(flag, &fi->flags);
1122 static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag)
1124 if (test_bit(flag, &fi->flags))
1125 clear_bit(flag, &fi->flags);
1128 static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode)
1130 fi->i_acl_mode = mode;
1131 set_inode_flag(fi, FI_ACL_MODE);
1134 static inline void get_inline_info(struct f2fs_inode_info *fi,
1135 struct f2fs_inode *ri)
1137 if (ri->i_inline & F2FS_INLINE_XATTR)
1138 set_inode_flag(fi, FI_INLINE_XATTR);
1139 if (ri->i_inline & F2FS_INLINE_DATA)
1140 set_inode_flag(fi, FI_INLINE_DATA);
1141 if (ri->i_inline & F2FS_INLINE_DENTRY)
1142 set_inode_flag(fi, FI_INLINE_DENTRY);
1143 if (ri->i_inline & F2FS_DATA_EXIST)
1144 set_inode_flag(fi, FI_DATA_EXIST);
1147 static inline void set_raw_inline(struct f2fs_inode_info *fi,
1148 struct f2fs_inode *ri)
1152 if (is_inode_flag_set(fi, FI_INLINE_XATTR))
1153 ri->i_inline |= F2FS_INLINE_XATTR;
1154 if (is_inode_flag_set(fi, FI_INLINE_DATA))
1155 ri->i_inline |= F2FS_INLINE_DATA;
1156 if (is_inode_flag_set(fi, FI_INLINE_DENTRY))
1157 ri->i_inline |= F2FS_INLINE_DENTRY;
1158 if (is_inode_flag_set(fi, FI_DATA_EXIST))
1159 ri->i_inline |= F2FS_DATA_EXIST;
1162 static inline int f2fs_has_inline_xattr(struct inode *inode)
1164 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR);
1167 static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi)
1169 if (f2fs_has_inline_xattr(&fi->vfs_inode))
1170 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
1171 return DEF_ADDRS_PER_INODE;
1174 static inline void *inline_xattr_addr(struct page *page)
1176 struct f2fs_inode *ri = F2FS_INODE(page);
1177 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
1178 F2FS_INLINE_XATTR_ADDRS]);
1181 static inline int inline_xattr_size(struct inode *inode)
1183 if (f2fs_has_inline_xattr(inode))
1184 return F2FS_INLINE_XATTR_ADDRS << 2;
1189 static inline int f2fs_has_inline_data(struct inode *inode)
1191 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA);
1194 static inline void f2fs_clear_inline_inode(struct inode *inode)
1196 clear_inode_flag(F2FS_I(inode), FI_INLINE_DATA);
1197 clear_inode_flag(F2FS_I(inode), FI_DATA_EXIST);
1200 static inline int f2fs_exist_data(struct inode *inode)
1202 return is_inode_flag_set(F2FS_I(inode), FI_DATA_EXIST);
1205 static inline bool f2fs_is_atomic_file(struct inode *inode)
1207 return is_inode_flag_set(F2FS_I(inode), FI_ATOMIC_FILE);
1210 static inline bool f2fs_is_volatile_file(struct inode *inode)
1212 return is_inode_flag_set(F2FS_I(inode), FI_VOLATILE_FILE);
1215 static inline void *inline_data_addr(struct page *page)
1217 struct f2fs_inode *ri = F2FS_INODE(page);
1218 return (void *)&(ri->i_addr[1]);
1221 static inline int f2fs_has_inline_dentry(struct inode *inode)
1223 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DENTRY);
1226 static inline void *inline_dentry_addr(struct page *page)
1228 struct f2fs_inode *ri = F2FS_INODE(page);
1229 return (void *)&(ri->i_addr[1]);
1232 static inline void f2fs_dentry_kunmap(struct inode *dir, struct page *page)
1234 if (!f2fs_has_inline_dentry(dir))
1238 static inline int f2fs_readonly(struct super_block *sb)
1240 return sb->s_flags & MS_RDONLY;
1243 static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
1245 return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1248 static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi)
1250 set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1251 sbi->sb->s_flags |= MS_RDONLY;
1254 #define get_inode_mode(i) \
1255 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1256 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1258 /* get offset of first page in next direct node */
1259 #define PGOFS_OF_NEXT_DNODE(pgofs, fi) \
1260 ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \
1261 (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \
1262 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi))
1267 int f2fs_sync_file(struct file *, loff_t, loff_t, int);
1268 void truncate_data_blocks(struct dnode_of_data *);
1269 int truncate_blocks(struct inode *, u64, bool);
1270 void f2fs_truncate(struct inode *);
1271 int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
1272 int f2fs_setattr(struct dentry *, struct iattr *);
1273 int truncate_hole(struct inode *, pgoff_t, pgoff_t);
1274 int truncate_data_blocks_range(struct dnode_of_data *, int);
1275 long f2fs_ioctl(struct file *, unsigned int, unsigned long);
1276 long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long);
1281 void f2fs_set_inode_flags(struct inode *);
1282 struct inode *f2fs_iget(struct super_block *, unsigned long);
1283 int try_to_free_nats(struct f2fs_sb_info *, int);
1284 void update_inode(struct inode *, struct page *);
1285 void update_inode_page(struct inode *);
1286 int f2fs_write_inode(struct inode *, struct writeback_control *);
1287 void f2fs_evict_inode(struct inode *);
1288 void handle_failed_inode(struct inode *);
1293 struct dentry *f2fs_get_parent(struct dentry *child);
1298 extern unsigned char f2fs_filetype_table[F2FS_FT_MAX];
1299 void set_de_type(struct f2fs_dir_entry *, struct inode *);
1300 struct f2fs_dir_entry *find_target_dentry(struct qstr *, int *,
1301 struct f2fs_dentry_ptr *);
1302 bool f2fs_fill_dentries(struct dir_context *, struct f2fs_dentry_ptr *,
1304 void do_make_empty_dir(struct inode *, struct inode *,
1305 struct f2fs_dentry_ptr *);
1306 struct page *init_inode_metadata(struct inode *, struct inode *,
1307 const struct qstr *, struct page *);
1308 void update_parent_metadata(struct inode *, struct inode *, unsigned int);
1309 int room_for_filename(const void *, int, int);
1310 void f2fs_drop_nlink(struct inode *, struct inode *, struct page *);
1311 struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *,
1313 struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
1314 ino_t f2fs_inode_by_name(struct inode *, struct qstr *);
1315 void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
1316 struct page *, struct inode *);
1317 int update_dent_inode(struct inode *, const struct qstr *);
1318 int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *);
1319 void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *,
1321 int f2fs_do_tmpfile(struct inode *, struct inode *);
1322 int f2fs_make_empty(struct inode *, struct inode *);
1323 bool f2fs_empty_dir(struct inode *);
1325 static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
1327 return __f2fs_add_link(dentry->d_parent->d_inode, &dentry->d_name,
1334 int f2fs_sync_fs(struct super_block *, int);
1335 extern __printf(3, 4)
1336 void f2fs_msg(struct super_block *, const char *, const char *, ...);
1341 f2fs_hash_t f2fs_dentry_hash(const struct qstr *);
1346 struct dnode_of_data;
1349 bool available_free_memory(struct f2fs_sb_info *, int);
1350 bool is_checkpointed_node(struct f2fs_sb_info *, nid_t);
1351 bool has_fsynced_inode(struct f2fs_sb_info *, nid_t);
1352 bool need_inode_block_update(struct f2fs_sb_info *, nid_t);
1353 void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
1354 int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);
1355 int truncate_inode_blocks(struct inode *, pgoff_t);
1356 int truncate_xattr_node(struct inode *, struct page *);
1357 int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t);
1358 void remove_inode_page(struct inode *);
1359 struct page *new_inode_page(struct inode *);
1360 struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *);
1361 void ra_node_page(struct f2fs_sb_info *, nid_t);
1362 struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
1363 struct page *get_node_page_ra(struct page *, int);
1364 void sync_inode_page(struct dnode_of_data *);
1365 int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *);
1366 bool alloc_nid(struct f2fs_sb_info *, nid_t *);
1367 void alloc_nid_done(struct f2fs_sb_info *, nid_t);
1368 void alloc_nid_failed(struct f2fs_sb_info *, nid_t);
1369 void recover_inline_xattr(struct inode *, struct page *);
1370 void recover_xattr_data(struct inode *, struct page *, block_t);
1371 int recover_inode_page(struct f2fs_sb_info *, struct page *);
1372 int restore_node_summary(struct f2fs_sb_info *, unsigned int,
1373 struct f2fs_summary_block *);
1374 void flush_nat_entries(struct f2fs_sb_info *);
1375 int build_node_manager(struct f2fs_sb_info *);
1376 void destroy_node_manager(struct f2fs_sb_info *);
1377 int __init create_node_manager_caches(void);
1378 void destroy_node_manager_caches(void);
1383 void register_inmem_page(struct inode *, struct page *);
1384 void invalidate_inmem_page(struct inode *, struct page *);
1385 void commit_inmem_pages(struct inode *, bool);
1386 void f2fs_balance_fs(struct f2fs_sb_info *);
1387 void f2fs_balance_fs_bg(struct f2fs_sb_info *);
1388 int f2fs_issue_flush(struct f2fs_sb_info *);
1389 int create_flush_cmd_control(struct f2fs_sb_info *);
1390 void destroy_flush_cmd_control(struct f2fs_sb_info *);
1391 void invalidate_blocks(struct f2fs_sb_info *, block_t);
1392 void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t);
1393 void clear_prefree_segments(struct f2fs_sb_info *);
1394 void release_discard_addrs(struct f2fs_sb_info *);
1395 void discard_next_dnode(struct f2fs_sb_info *, block_t);
1396 int npages_for_summary_flush(struct f2fs_sb_info *);
1397 void allocate_new_segments(struct f2fs_sb_info *);
1398 int f2fs_trim_fs(struct f2fs_sb_info *, struct fstrim_range *);
1399 struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
1400 void write_meta_page(struct f2fs_sb_info *, struct page *);
1401 void write_node_page(struct f2fs_sb_info *, struct page *,
1402 struct f2fs_io_info *, unsigned int, block_t, block_t *);
1403 void write_data_page(struct page *, struct dnode_of_data *, block_t *,
1404 struct f2fs_io_info *);
1405 void rewrite_data_page(struct page *, block_t, struct f2fs_io_info *);
1406 void recover_data_page(struct f2fs_sb_info *, struct page *,
1407 struct f2fs_summary *, block_t, block_t);
1408 void allocate_data_block(struct f2fs_sb_info *, struct page *,
1409 block_t, block_t *, struct f2fs_summary *, int);
1410 void f2fs_wait_on_page_writeback(struct page *, enum page_type);
1411 void write_data_summaries(struct f2fs_sb_info *, block_t);
1412 void write_node_summaries(struct f2fs_sb_info *, block_t);
1413 int lookup_journal_in_cursum(struct f2fs_summary_block *,
1414 int, unsigned int, int);
1415 void flush_sit_entries(struct f2fs_sb_info *, struct cp_control *);
1416 int build_segment_manager(struct f2fs_sb_info *);
1417 void destroy_segment_manager(struct f2fs_sb_info *);
1418 int __init create_segment_manager_caches(void);
1419 void destroy_segment_manager_caches(void);
1424 struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
1425 struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
1426 struct page *get_meta_page_ra(struct f2fs_sb_info *, pgoff_t);
1427 int ra_meta_pages(struct f2fs_sb_info *, block_t, int, int);
1428 long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
1429 void add_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
1430 void remove_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
1431 void release_dirty_inode(struct f2fs_sb_info *);
1432 bool exist_written_data(struct f2fs_sb_info *, nid_t, int);
1433 int acquire_orphan_inode(struct f2fs_sb_info *);
1434 void release_orphan_inode(struct f2fs_sb_info *);
1435 void add_orphan_inode(struct f2fs_sb_info *, nid_t);
1436 void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
1437 void recover_orphan_inodes(struct f2fs_sb_info *);
1438 int get_valid_checkpoint(struct f2fs_sb_info *);
1439 void update_dirty_page(struct inode *, struct page *);
1440 void add_dirty_dir_inode(struct inode *);
1441 void remove_dirty_dir_inode(struct inode *);
1442 void sync_dirty_dir_inodes(struct f2fs_sb_info *);
1443 void write_checkpoint(struct f2fs_sb_info *, struct cp_control *);
1444 void init_ino_entry_info(struct f2fs_sb_info *);
1445 int __init create_checkpoint_caches(void);
1446 void destroy_checkpoint_caches(void);
1451 void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int);
1452 int f2fs_submit_page_bio(struct f2fs_sb_info *, struct page *, block_t, int);
1453 void f2fs_submit_page_mbio(struct f2fs_sb_info *, struct page *, block_t,
1454 struct f2fs_io_info *);
1455 int reserve_new_block(struct dnode_of_data *);
1456 int f2fs_reserve_block(struct dnode_of_data *, pgoff_t);
1457 void update_extent_cache(block_t, struct dnode_of_data *);
1458 struct page *find_data_page(struct inode *, pgoff_t, bool);
1459 struct page *get_lock_data_page(struct inode *, pgoff_t);
1460 struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
1461 int do_write_data_page(struct page *, struct f2fs_io_info *);
1462 int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64);
1467 int start_gc_thread(struct f2fs_sb_info *);
1468 void stop_gc_thread(struct f2fs_sb_info *);
1469 block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *);
1470 int f2fs_gc(struct f2fs_sb_info *);
1471 void build_gc_manager(struct f2fs_sb_info *);
1472 int __init create_gc_caches(void);
1473 void destroy_gc_caches(void);
1478 int recover_fsync_data(struct f2fs_sb_info *);
1479 bool space_for_roll_forward(struct f2fs_sb_info *);
1484 #ifdef CONFIG_F2FS_STAT_FS
1485 struct f2fs_stat_info {
1486 struct list_head stat_list;
1487 struct f2fs_sb_info *sbi;
1488 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
1489 int main_area_segs, main_area_sections, main_area_zones;
1490 int hit_ext, total_ext;
1491 int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta;
1492 int nats, sits, fnids;
1493 int total_count, utilization;
1494 int bg_gc, inline_inode, inline_dir;
1495 unsigned int valid_count, valid_node_count, valid_inode_count;
1496 unsigned int bimodal, avg_vblocks;
1497 int util_free, util_valid, util_invalid;
1498 int rsvd_segs, overp_segs;
1499 int dirty_count, node_pages, meta_pages;
1500 int prefree_count, call_count, cp_count;
1501 int tot_segs, node_segs, data_segs, free_segs, free_secs;
1502 int tot_blks, data_blks, node_blks;
1503 int curseg[NR_CURSEG_TYPE];
1504 int cursec[NR_CURSEG_TYPE];
1505 int curzone[NR_CURSEG_TYPE];
1507 unsigned int segment_count[2];
1508 unsigned int block_count[2];
1509 unsigned base_mem, cache_mem;
1512 static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
1514 return (struct f2fs_stat_info *)sbi->stat_info;
1517 #define stat_inc_cp_count(si) ((si)->cp_count++)
1518 #define stat_inc_call_count(si) ((si)->call_count++)
1519 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1520 #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1521 #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
1522 #define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++)
1523 #define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++)
1524 #define stat_inc_inline_inode(inode) \
1526 if (f2fs_has_inline_data(inode)) \
1527 ((F2FS_I_SB(inode))->inline_inode++); \
1529 #define stat_dec_inline_inode(inode) \
1531 if (f2fs_has_inline_data(inode)) \
1532 ((F2FS_I_SB(inode))->inline_inode--); \
1534 #define stat_inc_inline_dir(inode) \
1536 if (f2fs_has_inline_dentry(inode)) \
1537 ((F2FS_I_SB(inode))->inline_dir++); \
1539 #define stat_dec_inline_dir(inode) \
1541 if (f2fs_has_inline_dentry(inode)) \
1542 ((F2FS_I_SB(inode))->inline_dir--); \
1544 #define stat_inc_seg_type(sbi, curseg) \
1545 ((sbi)->segment_count[(curseg)->alloc_type]++)
1546 #define stat_inc_block_count(sbi, curseg) \
1547 ((sbi)->block_count[(curseg)->alloc_type]++)
1549 #define stat_inc_seg_count(sbi, type) \
1551 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1553 if (type == SUM_TYPE_DATA) \
1559 #define stat_inc_tot_blk_count(si, blks) \
1560 (si->tot_blks += (blks))
1562 #define stat_inc_data_blk_count(sbi, blks) \
1564 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1565 stat_inc_tot_blk_count(si, blks); \
1566 si->data_blks += (blks); \
1569 #define stat_inc_node_blk_count(sbi, blks) \
1571 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1572 stat_inc_tot_blk_count(si, blks); \
1573 si->node_blks += (blks); \
1576 int f2fs_build_stats(struct f2fs_sb_info *);
1577 void f2fs_destroy_stats(struct f2fs_sb_info *);
1578 void __init f2fs_create_root_stats(void);
1579 void f2fs_destroy_root_stats(void);
1581 #define stat_inc_cp_count(si)
1582 #define stat_inc_call_count(si)
1583 #define stat_inc_bggc_count(si)
1584 #define stat_inc_dirty_dir(sbi)
1585 #define stat_dec_dirty_dir(sbi)
1586 #define stat_inc_total_hit(sb)
1587 #define stat_inc_read_hit(sb)
1588 #define stat_inc_inline_inode(inode)
1589 #define stat_dec_inline_inode(inode)
1590 #define stat_inc_inline_dir(inode)
1591 #define stat_dec_inline_dir(inode)
1592 #define stat_inc_seg_type(sbi, curseg)
1593 #define stat_inc_block_count(sbi, curseg)
1594 #define stat_inc_seg_count(si, type)
1595 #define stat_inc_tot_blk_count(si, blks)
1596 #define stat_inc_data_blk_count(si, blks)
1597 #define stat_inc_node_blk_count(sbi, blks)
1599 static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
1600 static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
1601 static inline void __init f2fs_create_root_stats(void) { }
1602 static inline void f2fs_destroy_root_stats(void) { }
1605 extern const struct file_operations f2fs_dir_operations;
1606 extern const struct file_operations f2fs_file_operations;
1607 extern const struct inode_operations f2fs_file_inode_operations;
1608 extern const struct address_space_operations f2fs_dblock_aops;
1609 extern const struct address_space_operations f2fs_node_aops;
1610 extern const struct address_space_operations f2fs_meta_aops;
1611 extern const struct inode_operations f2fs_dir_inode_operations;
1612 extern const struct inode_operations f2fs_symlink_inode_operations;
1613 extern const struct inode_operations f2fs_special_inode_operations;
1618 bool f2fs_may_inline(struct inode *);
1619 void read_inline_data(struct page *, struct page *);
1620 int f2fs_read_inline_data(struct inode *, struct page *);
1621 int f2fs_convert_inline_page(struct dnode_of_data *, struct page *);
1622 int f2fs_convert_inline_inode(struct inode *);
1623 int f2fs_write_inline_data(struct inode *, struct page *);
1624 void truncate_inline_data(struct page *, u64);
1625 bool recover_inline_data(struct inode *, struct page *);
1626 struct f2fs_dir_entry *find_in_inline_dir(struct inode *, struct qstr *,
1628 struct f2fs_dir_entry *f2fs_parent_inline_dir(struct inode *, struct page **);
1629 int make_empty_inline_dir(struct inode *inode, struct inode *, struct page *);
1630 int f2fs_add_inline_entry(struct inode *, const struct qstr *, struct inode *);
1631 void f2fs_delete_inline_entry(struct f2fs_dir_entry *, struct page *,
1632 struct inode *, struct inode *);
1633 bool f2fs_empty_inline_dir(struct inode *);
1634 int f2fs_read_inline_dir(struct file *, struct dir_context *);