4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
14 #include <linux/types.h>
15 #include <linux/page-flags.h>
16 #include <linux/buffer_head.h>
17 #include <linux/slab.h>
18 #include <linux/crc32.h>
19 #include <linux/magic.h>
20 #include <linux/kobject.h>
21 #include <linux/sched.h>
22 #include <linux/vmalloc.h>
23 #include <linux/bio.h>
25 #ifdef CONFIG_F2FS_CHECK_FS
26 #define f2fs_bug_on(sbi, condition) BUG_ON(condition)
27 #define f2fs_down_write(x, y) down_write_nest_lock(x, y)
29 #define f2fs_bug_on(sbi, condition) \
31 if (unlikely(condition)) { \
33 set_sbi_flag(sbi, SBI_NEED_FSCK); \
36 #define f2fs_down_write(x, y) down_write(x)
42 #define F2FS_MOUNT_BG_GC 0x00000001
43 #define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
44 #define F2FS_MOUNT_DISCARD 0x00000004
45 #define F2FS_MOUNT_NOHEAP 0x00000008
46 #define F2FS_MOUNT_XATTR_USER 0x00000010
47 #define F2FS_MOUNT_POSIX_ACL 0x00000020
48 #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
49 #define F2FS_MOUNT_INLINE_XATTR 0x00000080
50 #define F2FS_MOUNT_INLINE_DATA 0x00000100
51 #define F2FS_MOUNT_INLINE_DENTRY 0x00000200
52 #define F2FS_MOUNT_FLUSH_MERGE 0x00000400
53 #define F2FS_MOUNT_NOBARRIER 0x00000800
54 #define F2FS_MOUNT_FASTBOOT 0x00001000
55 #define F2FS_MOUNT_EXTENT_CACHE 0x00002000
56 #define F2FS_MOUNT_FORCE_FG_GC 0x00004000
58 #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
59 #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
60 #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
62 #define ver_after(a, b) (typecheck(unsigned long long, a) && \
63 typecheck(unsigned long long, b) && \
64 ((long long)((a) - (b)) > 0))
66 typedef u32 block_t; /*
67 * should not change u32, since it is the on-disk block
68 * address format, __le32.
72 struct f2fs_mount_info {
76 #define F2FS_FEATURE_ENCRYPT 0x0001
78 #define F2FS_HAS_FEATURE(sb, mask) \
79 ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
80 #define F2FS_SET_FEATURE(sb, mask) \
81 F2FS_SB(sb)->raw_super->feature |= cpu_to_le32(mask)
82 #define F2FS_CLEAR_FEATURE(sb, mask) \
83 F2FS_SB(sb)->raw_super->feature &= ~cpu_to_le32(mask)
85 #define CRCPOLY_LE 0xedb88320
87 static inline __u32 f2fs_crc32(void *buf, size_t len)
89 unsigned char *p = (unsigned char *)buf;
90 __u32 crc = F2FS_SUPER_MAGIC;
95 for (i = 0; i < 8; i++)
96 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
101 static inline bool f2fs_crc_valid(__u32 blk_crc, void *buf, size_t buf_size)
103 return f2fs_crc32(buf, buf_size) == blk_crc;
107 * For checkpoint manager
122 #define DEF_BATCHED_TRIM_SECTIONS 32
123 #define BATCHED_TRIM_SEGMENTS(sbi) \
124 (SM_I(sbi)->trim_sections * (sbi)->segs_per_sec)
125 #define BATCHED_TRIM_BLOCKS(sbi) \
126 (BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg)
137 * For CP/NAT/SIT/SSA readahead
147 /* for the list of ino */
149 ORPHAN_INO, /* for orphan ino list */
150 APPEND_INO, /* for append ino list */
151 UPDATE_INO, /* for update ino list */
152 MAX_INO_ENTRY, /* max. list */
156 struct list_head list; /* list head */
157 nid_t ino; /* inode number */
161 * for the list of directory inodes or gc inodes.
162 * NOTE: there are two slab users for this structure, if we add/modify/delete
163 * fields in structure for one of slab users, it may affect fields or size of
164 * other one, in this condition, it's better to split both of slab and related
168 struct list_head list; /* list head */
169 struct inode *inode; /* vfs inode pointer */
172 /* for the list of blockaddresses to be discarded */
173 struct discard_entry {
174 struct list_head list; /* list head */
175 block_t blkaddr; /* block address to be discarded */
176 int len; /* # of consecutive blocks of the discard */
179 /* for the list of fsync inodes, used only during recovery */
180 struct fsync_inode_entry {
181 struct list_head list; /* list head */
182 struct inode *inode; /* vfs inode pointer */
183 block_t blkaddr; /* block address locating the last fsync */
184 block_t last_dentry; /* block address locating the last dentry */
185 block_t last_inode; /* block address locating the last inode */
188 #define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
189 #define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
191 #define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
192 #define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
193 #define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
194 #define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
196 #define MAX_NAT_JENTRIES(sum) (NAT_JOURNAL_ENTRIES - nats_in_cursum(sum))
197 #define MAX_SIT_JENTRIES(sum) (SIT_JOURNAL_ENTRIES - sits_in_cursum(sum))
199 static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i)
201 int before = nats_in_cursum(rs);
202 rs->n_nats = cpu_to_le16(before + i);
206 static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i)
208 int before = sits_in_cursum(rs);
209 rs->n_sits = cpu_to_le16(before + i);
213 static inline bool __has_cursum_space(struct f2fs_summary_block *sum, int size,
216 if (type == NAT_JOURNAL)
217 return size <= MAX_NAT_JENTRIES(sum);
218 return size <= MAX_SIT_JENTRIES(sum);
224 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
225 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
226 #define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
228 #define F2FS_IOCTL_MAGIC 0xf5
229 #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
230 #define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
231 #define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
232 #define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
233 #define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
234 #define F2FS_IOC_GARBAGE_COLLECT _IO(F2FS_IOCTL_MAGIC, 6)
235 #define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7)
237 #define F2FS_IOC_SET_ENCRYPTION_POLICY \
238 _IOR('f', 19, struct f2fs_encryption_policy)
239 #define F2FS_IOC_GET_ENCRYPTION_PWSALT \
240 _IOW('f', 20, __u8[16])
241 #define F2FS_IOC_GET_ENCRYPTION_POLICY \
242 _IOW('f', 21, struct f2fs_encryption_policy)
245 * should be same as XFS_IOC_GOINGDOWN.
246 * Flags for going down operation used by FS_IOC_GOINGDOWN
248 #define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
249 #define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
250 #define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
251 #define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
253 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
255 * ioctl commands in 32 bit emulation
257 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
258 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
262 * For INODE and NODE manager
264 /* for directory operations */
270 struct f2fs_filename {
271 const struct qstr *usr_fname;
272 struct f2fs_str disk_name;
274 #ifdef CONFIG_F2FS_FS_ENCRYPTION
275 struct f2fs_str crypto_buf;
279 #define FSTR_INIT(n, l) { .name = n, .len = l }
280 #define FSTR_TO_QSTR(f) QSTR_INIT((f)->name, (f)->len)
281 #define fname_name(p) ((p)->disk_name.name)
282 #define fname_len(p) ((p)->disk_name.len)
284 struct f2fs_dentry_ptr {
287 struct f2fs_dir_entry *dentry;
288 __u8 (*filename)[F2FS_SLOT_LEN];
292 static inline void make_dentry_ptr(struct inode *inode,
293 struct f2fs_dentry_ptr *d, void *src, int type)
298 struct f2fs_dentry_block *t = (struct f2fs_dentry_block *)src;
299 d->max = NR_DENTRY_IN_BLOCK;
300 d->bitmap = &t->dentry_bitmap;
301 d->dentry = t->dentry;
302 d->filename = t->filename;
304 struct f2fs_inline_dentry *t = (struct f2fs_inline_dentry *)src;
305 d->max = NR_INLINE_DENTRY;
306 d->bitmap = &t->dentry_bitmap;
307 d->dentry = t->dentry;
308 d->filename = t->filename;
313 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
314 * as its node offset to distinguish from index node blocks.
315 * But some bits are used to mark the node block.
317 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
320 ALLOC_NODE, /* allocate a new node page if needed */
321 LOOKUP_NODE, /* look up a node without readahead */
323 * look up a node with readahead called
328 #define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */
330 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
332 /* vector size for gang look-up from extent cache that consists of radix tree */
333 #define EXT_TREE_VEC_SIZE 64
335 /* for in-memory extent cache entry */
336 #define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
338 /* number of extent info in extent cache we try to shrink */
339 #define EXTENT_CACHE_SHRINK_NUMBER 128
342 unsigned int fofs; /* start offset in a file */
343 u32 blk; /* start block address of the extent */
344 unsigned int len; /* length of the extent */
348 struct rb_node rb_node; /* rb node located in rb-tree */
349 struct list_head list; /* node in global extent list of sbi */
350 struct extent_info ei; /* extent info */
354 nid_t ino; /* inode number */
355 struct rb_root root; /* root of extent info rb-tree */
356 struct extent_node *cached_en; /* recently accessed extent node */
357 struct extent_info largest; /* largested extent info */
358 rwlock_t lock; /* protect extent info rb-tree */
359 atomic_t refcount; /* reference count of rb-tree */
360 unsigned int count; /* # of extent node in rb-tree*/
364 * This structure is taken from ext4_map_blocks.
366 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
368 #define F2FS_MAP_NEW (1 << BH_New)
369 #define F2FS_MAP_MAPPED (1 << BH_Mapped)
370 #define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten)
371 #define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
374 struct f2fs_map_blocks {
378 unsigned int m_flags;
381 /* for flag in get_data_block */
382 #define F2FS_GET_BLOCK_READ 0
383 #define F2FS_GET_BLOCK_DIO 1
384 #define F2FS_GET_BLOCK_FIEMAP 2
385 #define F2FS_GET_BLOCK_BMAP 3
388 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
390 #define FADVISE_COLD_BIT 0x01
391 #define FADVISE_LOST_PINO_BIT 0x02
392 #define FADVISE_ENCRYPT_BIT 0x04
393 #define FADVISE_ENC_NAME_BIT 0x08
395 #define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
396 #define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
397 #define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
398 #define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
399 #define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
400 #define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
401 #define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
402 #define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
403 #define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
404 #define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
405 #define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
407 /* Encryption algorithms */
408 #define F2FS_ENCRYPTION_MODE_INVALID 0
409 #define F2FS_ENCRYPTION_MODE_AES_256_XTS 1
410 #define F2FS_ENCRYPTION_MODE_AES_256_GCM 2
411 #define F2FS_ENCRYPTION_MODE_AES_256_CBC 3
412 #define F2FS_ENCRYPTION_MODE_AES_256_CTS 4
414 #include "f2fs_crypto.h"
416 #define DEF_DIR_LEVEL 0
418 struct f2fs_inode_info {
419 struct inode vfs_inode; /* serve a vfs inode */
420 unsigned long i_flags; /* keep an inode flags for ioctl */
421 unsigned char i_advise; /* use to give file attribute hints */
422 unsigned char i_dir_level; /* use for dentry level for large dir */
423 unsigned int i_current_depth; /* use only in directory structure */
424 unsigned int i_pino; /* parent inode number */
425 umode_t i_acl_mode; /* keep file acl mode temporarily */
427 /* Use below internally in f2fs*/
428 unsigned long flags; /* use to pass per-file flags */
429 struct rw_semaphore i_sem; /* protect fi info */
430 atomic_t dirty_pages; /* # of dirty pages */
431 f2fs_hash_t chash; /* hash value of given file name */
432 unsigned int clevel; /* maximum level of given file name */
433 nid_t i_xattr_nid; /* node id that contains xattrs */
434 unsigned long long xattr_ver; /* cp version of xattr modification */
435 struct inode_entry *dirty_dir; /* the pointer of dirty dir */
437 struct list_head inmem_pages; /* inmemory pages managed by f2fs */
438 struct mutex inmem_lock; /* lock for inmemory pages */
440 struct extent_tree *extent_tree; /* cached extent_tree entry */
442 #ifdef CONFIG_F2FS_FS_ENCRYPTION
443 /* Encryption params */
444 struct f2fs_crypt_info *i_crypt_info;
448 static inline void get_extent_info(struct extent_info *ext,
449 struct f2fs_extent i_ext)
451 ext->fofs = le32_to_cpu(i_ext.fofs);
452 ext->blk = le32_to_cpu(i_ext.blk);
453 ext->len = le32_to_cpu(i_ext.len);
456 static inline void set_raw_extent(struct extent_info *ext,
457 struct f2fs_extent *i_ext)
459 i_ext->fofs = cpu_to_le32(ext->fofs);
460 i_ext->blk = cpu_to_le32(ext->blk);
461 i_ext->len = cpu_to_le32(ext->len);
464 static inline void set_extent_info(struct extent_info *ei, unsigned int fofs,
465 u32 blk, unsigned int len)
472 static inline bool __is_extent_same(struct extent_info *ei1,
473 struct extent_info *ei2)
475 return (ei1->fofs == ei2->fofs && ei1->blk == ei2->blk &&
476 ei1->len == ei2->len);
479 static inline bool __is_extent_mergeable(struct extent_info *back,
480 struct extent_info *front)
482 return (back->fofs + back->len == front->fofs &&
483 back->blk + back->len == front->blk);
486 static inline bool __is_back_mergeable(struct extent_info *cur,
487 struct extent_info *back)
489 return __is_extent_mergeable(back, cur);
492 static inline bool __is_front_mergeable(struct extent_info *cur,
493 struct extent_info *front)
495 return __is_extent_mergeable(cur, front);
498 static inline void __try_update_largest_extent(struct extent_tree *et,
499 struct extent_node *en)
501 if (en->ei.len > et->largest.len)
502 et->largest = en->ei;
505 struct f2fs_nm_info {
506 block_t nat_blkaddr; /* base disk address of NAT */
507 nid_t max_nid; /* maximum possible node ids */
508 nid_t available_nids; /* maximum available node ids */
509 nid_t next_scan_nid; /* the next nid to be scanned */
510 unsigned int ram_thresh; /* control the memory footprint */
512 /* NAT cache management */
513 struct radix_tree_root nat_root;/* root of the nat entry cache */
514 struct radix_tree_root nat_set_root;/* root of the nat set cache */
515 struct rw_semaphore nat_tree_lock; /* protect nat_tree_lock */
516 struct list_head nat_entries; /* cached nat entry list (clean) */
517 unsigned int nat_cnt; /* the # of cached nat entries */
518 unsigned int dirty_nat_cnt; /* total num of nat entries in set */
520 /* free node ids management */
521 struct radix_tree_root free_nid_root;/* root of the free_nid cache */
522 struct list_head free_nid_list; /* a list for free nids */
523 spinlock_t free_nid_list_lock; /* protect free nid list */
524 unsigned int fcnt; /* the number of free node id */
525 struct mutex build_lock; /* lock for build free nids */
528 char *nat_bitmap; /* NAT bitmap pointer */
529 int bitmap_size; /* bitmap size */
533 * this structure is used as one of function parameters.
534 * all the information are dedicated to a given direct node block determined
535 * by the data offset in a file.
537 struct dnode_of_data {
538 struct inode *inode; /* vfs inode pointer */
539 struct page *inode_page; /* its inode page, NULL is possible */
540 struct page *node_page; /* cached direct node page */
541 nid_t nid; /* node id of the direct node block */
542 unsigned int ofs_in_node; /* data offset in the node page */
543 bool inode_page_locked; /* inode page is locked or not */
544 block_t data_blkaddr; /* block address of the node block */
547 static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
548 struct page *ipage, struct page *npage, nid_t nid)
550 memset(dn, 0, sizeof(*dn));
552 dn->inode_page = ipage;
553 dn->node_page = npage;
560 * By default, there are 6 active log areas across the whole main area.
561 * When considering hot and cold data separation to reduce cleaning overhead,
562 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
564 * In the current design, you should not change the numbers intentionally.
565 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
566 * logs individually according to the underlying devices. (default: 6)
567 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
568 * data and 8 for node logs.
570 #define NR_CURSEG_DATA_TYPE (3)
571 #define NR_CURSEG_NODE_TYPE (3)
572 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
575 CURSEG_HOT_DATA = 0, /* directory entry blocks */
576 CURSEG_WARM_DATA, /* data blocks */
577 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
578 CURSEG_HOT_NODE, /* direct node blocks of directory files */
579 CURSEG_WARM_NODE, /* direct node blocks of normal files */
580 CURSEG_COLD_NODE, /* indirect node blocks */
582 CURSEG_DIRECT_IO, /* to use for the direct IO path */
586 struct completion wait;
587 struct llist_node llnode;
591 struct flush_cmd_control {
592 struct task_struct *f2fs_issue_flush; /* flush thread */
593 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
594 struct llist_head issue_list; /* list for command issue */
595 struct llist_node *dispatch_list; /* list for command dispatch */
598 struct f2fs_sm_info {
599 struct sit_info *sit_info; /* whole segment information */
600 struct free_segmap_info *free_info; /* free segment information */
601 struct dirty_seglist_info *dirty_info; /* dirty segment information */
602 struct curseg_info *curseg_array; /* active segment information */
604 block_t seg0_blkaddr; /* block address of 0'th segment */
605 block_t main_blkaddr; /* start block address of main area */
606 block_t ssa_blkaddr; /* start block address of SSA area */
608 unsigned int segment_count; /* total # of segments */
609 unsigned int main_segments; /* # of segments in main area */
610 unsigned int reserved_segments; /* # of reserved segments */
611 unsigned int ovp_segments; /* # of overprovision segments */
613 /* a threshold to reclaim prefree segments */
614 unsigned int rec_prefree_segments;
616 /* for small discard management */
617 struct list_head discard_list; /* 4KB discard list */
618 int nr_discards; /* # of discards in the list */
619 int max_discards; /* max. discards to be issued */
621 /* for batched trimming */
622 unsigned int trim_sections; /* # of sections to trim */
624 struct list_head sit_entry_set; /* sit entry set list */
626 unsigned int ipu_policy; /* in-place-update policy */
627 unsigned int min_ipu_util; /* in-place-update threshold */
628 unsigned int min_fsync_blocks; /* threshold for fsync */
630 /* for flush command control */
631 struct flush_cmd_control *cmd_control_info;
639 * COUNT_TYPE for monitoring
641 * f2fs monitors the number of several block types such as on-writeback,
642 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
654 * The below are the page types of bios used in submit_bio().
655 * The available types are:
656 * DATA User data pages. It operates as async mode.
657 * NODE Node pages. It operates as async mode.
658 * META FS metadata pages such as SIT, NAT, CP.
659 * NR_PAGE_TYPE The number of page types.
660 * META_FLUSH Make sure the previous pages are written
661 * with waiting the bio's completion
662 * ... Only can be used with META.
664 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
671 INMEM, /* the below types are used by tracepoints only. */
677 struct f2fs_io_info {
678 struct f2fs_sb_info *sbi; /* f2fs_sb_info pointer */
679 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
680 int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
681 block_t blk_addr; /* block address to be written */
682 struct page *page; /* page to be written */
683 struct page *encrypted_page; /* encrypted page */
686 #define is_read_io(rw) (((rw) & 1) == READ)
687 struct f2fs_bio_info {
688 struct f2fs_sb_info *sbi; /* f2fs superblock */
689 struct bio *bio; /* bios to merge */
690 sector_t last_block_in_bio; /* last block number */
691 struct f2fs_io_info fio; /* store buffered io info. */
692 struct rw_semaphore io_rwsem; /* blocking op for bio */
695 /* for inner inode cache management */
696 struct inode_management {
697 struct radix_tree_root ino_root; /* ino entry array */
698 spinlock_t ino_lock; /* for ino entry lock */
699 struct list_head ino_list; /* inode list head */
700 unsigned long ino_num; /* number of entries */
703 /* For s_flag in struct f2fs_sb_info */
705 SBI_IS_DIRTY, /* dirty flag for checkpoint */
706 SBI_IS_CLOSE, /* specify unmounting */
707 SBI_NEED_FSCK, /* need fsck.f2fs to fix */
708 SBI_POR_DOING, /* recovery is doing or not */
711 struct f2fs_sb_info {
712 struct super_block *sb; /* pointer to VFS super block */
713 struct proc_dir_entry *s_proc; /* proc entry */
714 struct buffer_head *raw_super_buf; /* buffer head of raw sb */
715 struct f2fs_super_block *raw_super; /* raw super block pointer */
716 int s_flag; /* flags for sbi */
718 /* for node-related operations */
719 struct f2fs_nm_info *nm_info; /* node manager */
720 struct inode *node_inode; /* cache node blocks */
722 /* for segment-related operations */
723 struct f2fs_sm_info *sm_info; /* segment manager */
725 /* for bio operations */
726 struct f2fs_bio_info read_io; /* for read bios */
727 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */
730 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
731 struct inode *meta_inode; /* cache meta blocks */
732 struct mutex cp_mutex; /* checkpoint procedure lock */
733 struct rw_semaphore cp_rwsem; /* blocking FS operations */
734 struct rw_semaphore node_write; /* locking node writes */
735 struct mutex writepages; /* mutex for writepages() */
736 wait_queue_head_t cp_wait;
738 struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */
740 /* for orphan inode, use 0'th array */
741 unsigned int max_orphans; /* max orphan inodes */
743 /* for directory inode management */
744 struct list_head dir_inode_list; /* dir inode list */
745 spinlock_t dir_inode_lock; /* for dir inode list lock */
747 /* for extent tree cache */
748 struct radix_tree_root extent_tree_root;/* cache extent cache entries */
749 struct rw_semaphore extent_tree_lock; /* locking extent radix tree */
750 struct list_head extent_list; /* lru list for shrinker */
751 spinlock_t extent_lock; /* locking extent lru list */
752 int total_ext_tree; /* extent tree count */
753 atomic_t total_ext_node; /* extent info count */
755 /* basic filesystem units */
756 unsigned int log_sectors_per_block; /* log2 sectors per block */
757 unsigned int log_blocksize; /* log2 block size */
758 unsigned int blocksize; /* block size */
759 unsigned int root_ino_num; /* root inode number*/
760 unsigned int node_ino_num; /* node inode number*/
761 unsigned int meta_ino_num; /* meta inode number*/
762 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
763 unsigned int blocks_per_seg; /* blocks per segment */
764 unsigned int segs_per_sec; /* segments per section */
765 unsigned int secs_per_zone; /* sections per zone */
766 unsigned int total_sections; /* total section count */
767 unsigned int total_node_count; /* total node block count */
768 unsigned int total_valid_node_count; /* valid node block count */
769 unsigned int total_valid_inode_count; /* valid inode count */
770 int active_logs; /* # of active logs */
771 int dir_level; /* directory level */
773 block_t user_block_count; /* # of user blocks */
774 block_t total_valid_block_count; /* # of valid blocks */
775 block_t alloc_valid_block_count; /* # of allocated blocks */
776 block_t discard_blks; /* discard command candidats */
777 block_t last_valid_block_count; /* for recovery */
778 u32 s_next_generation; /* for NFS support */
779 atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */
781 struct f2fs_mount_info mount_opt; /* mount options */
783 /* for cleaning operations */
784 struct mutex gc_mutex; /* mutex for GC */
785 struct f2fs_gc_kthread *gc_thread; /* GC thread */
786 unsigned int cur_victim_sec; /* current victim section num */
788 /* maximum # of trials to find a victim segment for SSR and GC */
789 unsigned int max_victim_search;
792 * for stat information.
793 * one is for the LFS mode, and the other is for the SSR mode.
795 #ifdef CONFIG_F2FS_STAT_FS
796 struct f2fs_stat_info *stat_info; /* FS status information */
797 unsigned int segment_count[2]; /* # of allocated segments */
798 unsigned int block_count[2]; /* # of allocated blocks */
799 atomic_t inplace_count; /* # of inplace update */
800 atomic64_t total_hit_ext; /* # of lookup extent cache */
801 atomic64_t read_hit_rbtree; /* # of hit rbtree extent node */
802 atomic64_t read_hit_largest; /* # of hit largest extent node */
803 atomic64_t read_hit_cached; /* # of hit cached extent node */
804 atomic_t inline_xattr; /* # of inline_xattr inodes */
805 atomic_t inline_inode; /* # of inline_data inodes */
806 atomic_t inline_dir; /* # of inline_dentry inodes */
807 int bg_gc; /* background gc calls */
808 unsigned int n_dirty_dirs; /* # of dir inodes */
810 unsigned int last_victim[2]; /* last victim segment # */
811 spinlock_t stat_lock; /* lock for stat operations */
813 /* For sysfs suppport */
814 struct kobject s_kobj;
815 struct completion s_kobj_unregister;
817 /* For shrinker support */
818 struct list_head s_list;
819 struct mutex umount_mutex;
820 unsigned int shrinker_run_no;
826 static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
828 return container_of(inode, struct f2fs_inode_info, vfs_inode);
831 static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
833 return sb->s_fs_info;
836 static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
838 return F2FS_SB(inode->i_sb);
841 static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
843 return F2FS_I_SB(mapping->host);
846 static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
848 return F2FS_M_SB(page->mapping);
851 static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
853 return (struct f2fs_super_block *)(sbi->raw_super);
856 static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
858 return (struct f2fs_checkpoint *)(sbi->ckpt);
861 static inline struct f2fs_node *F2FS_NODE(struct page *page)
863 return (struct f2fs_node *)page_address(page);
866 static inline struct f2fs_inode *F2FS_INODE(struct page *page)
868 return &((struct f2fs_node *)page_address(page))->i;
871 static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
873 return (struct f2fs_nm_info *)(sbi->nm_info);
876 static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
878 return (struct f2fs_sm_info *)(sbi->sm_info);
881 static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
883 return (struct sit_info *)(SM_I(sbi)->sit_info);
886 static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
888 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
891 static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
893 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
896 static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
898 return sbi->meta_inode->i_mapping;
901 static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
903 return sbi->node_inode->i_mapping;
906 static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
908 return sbi->s_flag & (0x01 << type);
911 static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
913 sbi->s_flag |= (0x01 << type);
916 static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
918 sbi->s_flag &= ~(0x01 << type);
921 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
923 return le64_to_cpu(cp->checkpoint_ver);
926 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
928 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
929 return ckpt_flags & f;
932 static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
934 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
936 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
939 static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
941 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
943 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
946 static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
948 down_read(&sbi->cp_rwsem);
951 static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
953 up_read(&sbi->cp_rwsem);
956 static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
958 f2fs_down_write(&sbi->cp_rwsem, &sbi->cp_mutex);
961 static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
963 up_write(&sbi->cp_rwsem);
966 static inline int __get_cp_reason(struct f2fs_sb_info *sbi)
968 int reason = CP_SYNC;
970 if (test_opt(sbi, FASTBOOT))
971 reason = CP_FASTBOOT;
972 if (is_sbi_flag_set(sbi, SBI_IS_CLOSE))
977 static inline bool __remain_node_summaries(int reason)
979 return (reason == CP_UMOUNT || reason == CP_FASTBOOT);
982 static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
984 return (is_set_ckpt_flags(F2FS_CKPT(sbi), CP_UMOUNT_FLAG) ||
985 is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FASTBOOT_FLAG));
989 * Check whether the given nid is within node id range.
991 static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
993 if (unlikely(nid < F2FS_ROOT_INO(sbi)))
995 if (unlikely(nid >= NM_I(sbi)->max_nid))
1000 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
1003 * Check whether the inode has blocks or not
1005 static inline int F2FS_HAS_BLOCKS(struct inode *inode)
1007 if (F2FS_I(inode)->i_xattr_nid)
1008 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1;
1010 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS;
1013 static inline bool f2fs_has_xattr_block(unsigned int ofs)
1015 return ofs == XATTR_NODE_OFFSET;
1018 static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
1019 struct inode *inode, blkcnt_t count)
1021 block_t valid_block_count;
1023 spin_lock(&sbi->stat_lock);
1025 sbi->total_valid_block_count + (block_t)count;
1026 if (unlikely(valid_block_count > sbi->user_block_count)) {
1027 spin_unlock(&sbi->stat_lock);
1030 inode->i_blocks += count;
1031 sbi->total_valid_block_count = valid_block_count;
1032 sbi->alloc_valid_block_count += (block_t)count;
1033 spin_unlock(&sbi->stat_lock);
1037 static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
1038 struct inode *inode,
1041 spin_lock(&sbi->stat_lock);
1042 f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
1043 f2fs_bug_on(sbi, inode->i_blocks < count);
1044 inode->i_blocks -= count;
1045 sbi->total_valid_block_count -= (block_t)count;
1046 spin_unlock(&sbi->stat_lock);
1049 static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
1051 atomic_inc(&sbi->nr_pages[count_type]);
1052 set_sbi_flag(sbi, SBI_IS_DIRTY);
1055 static inline void inode_inc_dirty_pages(struct inode *inode)
1057 atomic_inc(&F2FS_I(inode)->dirty_pages);
1058 if (S_ISDIR(inode->i_mode))
1059 inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS);
1062 static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
1064 atomic_dec(&sbi->nr_pages[count_type]);
1067 static inline void inode_dec_dirty_pages(struct inode *inode)
1069 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
1070 !S_ISLNK(inode->i_mode))
1073 atomic_dec(&F2FS_I(inode)->dirty_pages);
1075 if (S_ISDIR(inode->i_mode))
1076 dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS);
1079 static inline int get_pages(struct f2fs_sb_info *sbi, int count_type)
1081 return atomic_read(&sbi->nr_pages[count_type]);
1084 static inline int get_dirty_pages(struct inode *inode)
1086 return atomic_read(&F2FS_I(inode)->dirty_pages);
1089 static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
1091 unsigned int pages_per_sec = sbi->segs_per_sec *
1092 (1 << sbi->log_blocks_per_seg);
1093 return ((get_pages(sbi, block_type) + pages_per_sec - 1)
1094 >> sbi->log_blocks_per_seg) / sbi->segs_per_sec;
1097 static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
1099 return sbi->total_valid_block_count;
1102 static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
1104 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1106 /* return NAT or SIT bitmap */
1107 if (flag == NAT_BITMAP)
1108 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
1109 else if (flag == SIT_BITMAP)
1110 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
1115 static inline block_t __cp_payload(struct f2fs_sb_info *sbi)
1117 return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
1120 static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
1122 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1125 if (__cp_payload(sbi) > 0) {
1126 if (flag == NAT_BITMAP)
1127 return &ckpt->sit_nat_version_bitmap;
1129 return (unsigned char *)ckpt + F2FS_BLKSIZE;
1131 offset = (flag == NAT_BITMAP) ?
1132 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
1133 return &ckpt->sit_nat_version_bitmap + offset;
1137 static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
1140 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1141 unsigned long long ckpt_version = cur_cp_version(ckpt);
1143 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
1146 * odd numbered checkpoint should at cp segment 0
1147 * and even segment must be at cp segment 1
1149 if (!(ckpt_version & 1))
1150 start_addr += sbi->blocks_per_seg;
1155 static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
1157 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
1160 static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
1161 struct inode *inode)
1163 block_t valid_block_count;
1164 unsigned int valid_node_count;
1166 spin_lock(&sbi->stat_lock);
1168 valid_block_count = sbi->total_valid_block_count + 1;
1169 if (unlikely(valid_block_count > sbi->user_block_count)) {
1170 spin_unlock(&sbi->stat_lock);
1174 valid_node_count = sbi->total_valid_node_count + 1;
1175 if (unlikely(valid_node_count > sbi->total_node_count)) {
1176 spin_unlock(&sbi->stat_lock);
1183 sbi->alloc_valid_block_count++;
1184 sbi->total_valid_node_count++;
1185 sbi->total_valid_block_count++;
1186 spin_unlock(&sbi->stat_lock);
1191 static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
1192 struct inode *inode)
1194 spin_lock(&sbi->stat_lock);
1196 f2fs_bug_on(sbi, !sbi->total_valid_block_count);
1197 f2fs_bug_on(sbi, !sbi->total_valid_node_count);
1198 f2fs_bug_on(sbi, !inode->i_blocks);
1201 sbi->total_valid_node_count--;
1202 sbi->total_valid_block_count--;
1204 spin_unlock(&sbi->stat_lock);
1207 static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
1209 return sbi->total_valid_node_count;
1212 static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
1214 spin_lock(&sbi->stat_lock);
1215 f2fs_bug_on(sbi, sbi->total_valid_inode_count == sbi->total_node_count);
1216 sbi->total_valid_inode_count++;
1217 spin_unlock(&sbi->stat_lock);
1220 static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
1222 spin_lock(&sbi->stat_lock);
1223 f2fs_bug_on(sbi, !sbi->total_valid_inode_count);
1224 sbi->total_valid_inode_count--;
1225 spin_unlock(&sbi->stat_lock);
1228 static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi)
1230 return sbi->total_valid_inode_count;
1233 static inline void f2fs_put_page(struct page *page, int unlock)
1239 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
1242 page_cache_release(page);
1245 static inline void f2fs_put_dnode(struct dnode_of_data *dn)
1248 f2fs_put_page(dn->node_page, 1);
1249 if (dn->inode_page && dn->node_page != dn->inode_page)
1250 f2fs_put_page(dn->inode_page, 0);
1251 dn->node_page = NULL;
1252 dn->inode_page = NULL;
1255 static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
1258 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
1261 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
1266 entry = kmem_cache_alloc(cachep, flags);
1268 entry = kmem_cache_alloc(cachep, flags | __GFP_NOFAIL);
1272 static inline struct bio *f2fs_bio_alloc(int npages)
1276 /* No failure on bio allocation */
1277 bio = bio_alloc(GFP_NOIO, npages);
1279 bio = bio_alloc(GFP_NOIO | __GFP_NOFAIL, npages);
1283 static inline void f2fs_radix_tree_insert(struct radix_tree_root *root,
1284 unsigned long index, void *item)
1286 while (radix_tree_insert(root, index, item))
1290 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1292 static inline bool IS_INODE(struct page *page)
1294 struct f2fs_node *p = F2FS_NODE(page);
1295 return RAW_IS_INODE(p);
1298 static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
1300 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
1303 static inline block_t datablock_addr(struct page *node_page,
1304 unsigned int offset)
1306 struct f2fs_node *raw_node;
1308 raw_node = F2FS_NODE(node_page);
1309 addr_array = blkaddr_in_node(raw_node);
1310 return le32_to_cpu(addr_array[offset]);
1313 static inline int f2fs_test_bit(unsigned int nr, char *addr)
1318 mask = 1 << (7 - (nr & 0x07));
1319 return mask & *addr;
1322 static inline void f2fs_set_bit(unsigned int nr, char *addr)
1327 mask = 1 << (7 - (nr & 0x07));
1331 static inline void f2fs_clear_bit(unsigned int nr, char *addr)
1336 mask = 1 << (7 - (nr & 0x07));
1340 static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
1346 mask = 1 << (7 - (nr & 0x07));
1352 static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
1358 mask = 1 << (7 - (nr & 0x07));
1364 static inline void f2fs_change_bit(unsigned int nr, char *addr)
1369 mask = 1 << (7 - (nr & 0x07));
1373 /* used for f2fs_inode_info->flags */
1375 FI_NEW_INODE, /* indicate newly allocated inode */
1376 FI_DIRTY_INODE, /* indicate inode is dirty or not */
1377 FI_DIRTY_DIR, /* indicate directory has dirty pages */
1378 FI_INC_LINK, /* need to increment i_nlink */
1379 FI_ACL_MODE, /* indicate acl mode */
1380 FI_NO_ALLOC, /* should not allocate any blocks */
1381 FI_FREE_NID, /* free allocated nide */
1382 FI_UPDATE_DIR, /* should update inode block for consistency */
1383 FI_DELAY_IPUT, /* used for the recovery */
1384 FI_NO_EXTENT, /* not to use the extent cache */
1385 FI_INLINE_XATTR, /* used for inline xattr */
1386 FI_INLINE_DATA, /* used for inline data*/
1387 FI_INLINE_DENTRY, /* used for inline dentry */
1388 FI_APPEND_WRITE, /* inode has appended data */
1389 FI_UPDATE_WRITE, /* inode has in-place-update data */
1390 FI_NEED_IPU, /* used for ipu per file */
1391 FI_ATOMIC_FILE, /* indicate atomic file */
1392 FI_VOLATILE_FILE, /* indicate volatile file */
1393 FI_FIRST_BLOCK_WRITTEN, /* indicate #0 data block was written */
1394 FI_DROP_CACHE, /* drop dirty page cache */
1395 FI_DATA_EXIST, /* indicate data exists */
1396 FI_INLINE_DOTS, /* indicate inline dot dentries */
1399 static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag)
1401 if (!test_bit(flag, &fi->flags))
1402 set_bit(flag, &fi->flags);
1405 static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag)
1407 return test_bit(flag, &fi->flags);
1410 static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag)
1412 if (test_bit(flag, &fi->flags))
1413 clear_bit(flag, &fi->flags);
1416 static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode)
1418 fi->i_acl_mode = mode;
1419 set_inode_flag(fi, FI_ACL_MODE);
1422 static inline void get_inline_info(struct f2fs_inode_info *fi,
1423 struct f2fs_inode *ri)
1425 if (ri->i_inline & F2FS_INLINE_XATTR)
1426 set_inode_flag(fi, FI_INLINE_XATTR);
1427 if (ri->i_inline & F2FS_INLINE_DATA)
1428 set_inode_flag(fi, FI_INLINE_DATA);
1429 if (ri->i_inline & F2FS_INLINE_DENTRY)
1430 set_inode_flag(fi, FI_INLINE_DENTRY);
1431 if (ri->i_inline & F2FS_DATA_EXIST)
1432 set_inode_flag(fi, FI_DATA_EXIST);
1433 if (ri->i_inline & F2FS_INLINE_DOTS)
1434 set_inode_flag(fi, FI_INLINE_DOTS);
1437 static inline void set_raw_inline(struct f2fs_inode_info *fi,
1438 struct f2fs_inode *ri)
1442 if (is_inode_flag_set(fi, FI_INLINE_XATTR))
1443 ri->i_inline |= F2FS_INLINE_XATTR;
1444 if (is_inode_flag_set(fi, FI_INLINE_DATA))
1445 ri->i_inline |= F2FS_INLINE_DATA;
1446 if (is_inode_flag_set(fi, FI_INLINE_DENTRY))
1447 ri->i_inline |= F2FS_INLINE_DENTRY;
1448 if (is_inode_flag_set(fi, FI_DATA_EXIST))
1449 ri->i_inline |= F2FS_DATA_EXIST;
1450 if (is_inode_flag_set(fi, FI_INLINE_DOTS))
1451 ri->i_inline |= F2FS_INLINE_DOTS;
1454 static inline int f2fs_has_inline_xattr(struct inode *inode)
1456 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR);
1459 static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi)
1461 if (f2fs_has_inline_xattr(&fi->vfs_inode))
1462 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
1463 return DEF_ADDRS_PER_INODE;
1466 static inline void *inline_xattr_addr(struct page *page)
1468 struct f2fs_inode *ri = F2FS_INODE(page);
1469 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
1470 F2FS_INLINE_XATTR_ADDRS]);
1473 static inline int inline_xattr_size(struct inode *inode)
1475 if (f2fs_has_inline_xattr(inode))
1476 return F2FS_INLINE_XATTR_ADDRS << 2;
1481 static inline int f2fs_has_inline_data(struct inode *inode)
1483 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA);
1486 static inline void f2fs_clear_inline_inode(struct inode *inode)
1488 clear_inode_flag(F2FS_I(inode), FI_INLINE_DATA);
1489 clear_inode_flag(F2FS_I(inode), FI_DATA_EXIST);
1492 static inline int f2fs_exist_data(struct inode *inode)
1494 return is_inode_flag_set(F2FS_I(inode), FI_DATA_EXIST);
1497 static inline int f2fs_has_inline_dots(struct inode *inode)
1499 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DOTS);
1502 static inline bool f2fs_is_atomic_file(struct inode *inode)
1504 return is_inode_flag_set(F2FS_I(inode), FI_ATOMIC_FILE);
1507 static inline bool f2fs_is_volatile_file(struct inode *inode)
1509 return is_inode_flag_set(F2FS_I(inode), FI_VOLATILE_FILE);
1512 static inline bool f2fs_is_first_block_written(struct inode *inode)
1514 return is_inode_flag_set(F2FS_I(inode), FI_FIRST_BLOCK_WRITTEN);
1517 static inline bool f2fs_is_drop_cache(struct inode *inode)
1519 return is_inode_flag_set(F2FS_I(inode), FI_DROP_CACHE);
1522 static inline void *inline_data_addr(struct page *page)
1524 struct f2fs_inode *ri = F2FS_INODE(page);
1525 return (void *)&(ri->i_addr[1]);
1528 static inline int f2fs_has_inline_dentry(struct inode *inode)
1530 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DENTRY);
1533 static inline void f2fs_dentry_kunmap(struct inode *dir, struct page *page)
1535 if (!f2fs_has_inline_dentry(dir))
1539 static inline int is_file(struct inode *inode, int type)
1541 return F2FS_I(inode)->i_advise & type;
1544 static inline void set_file(struct inode *inode, int type)
1546 F2FS_I(inode)->i_advise |= type;
1549 static inline void clear_file(struct inode *inode, int type)
1551 F2FS_I(inode)->i_advise &= ~type;
1554 static inline int f2fs_readonly(struct super_block *sb)
1556 return sb->s_flags & MS_RDONLY;
1559 static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
1561 return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1564 static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi)
1566 set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1567 sbi->sb->s_flags |= MS_RDONLY;
1570 static inline bool is_dot_dotdot(const struct qstr *str)
1572 if (str->len == 1 && str->name[0] == '.')
1575 if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.')
1581 static inline bool f2fs_may_extent_tree(struct inode *inode)
1583 mode_t mode = inode->i_mode;
1585 if (!test_opt(F2FS_I_SB(inode), EXTENT_CACHE) ||
1586 is_inode_flag_set(F2FS_I(inode), FI_NO_EXTENT))
1589 return S_ISREG(mode);
1592 static inline void *f2fs_kvmalloc(size_t size, gfp_t flags)
1596 ret = kmalloc(size, flags | __GFP_NOWARN);
1598 ret = __vmalloc(size, flags, PAGE_KERNEL);
1602 static inline void *f2fs_kvzalloc(size_t size, gfp_t flags)
1606 ret = kzalloc(size, flags | __GFP_NOWARN);
1608 ret = __vmalloc(size, flags | __GFP_ZERO, PAGE_KERNEL);
1612 #define get_inode_mode(i) \
1613 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1614 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1616 /* get offset of first page in next direct node */
1617 #define PGOFS_OF_NEXT_DNODE(pgofs, fi) \
1618 ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \
1619 (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \
1620 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi))
1625 int f2fs_sync_file(struct file *, loff_t, loff_t, int);
1626 void truncate_data_blocks(struct dnode_of_data *);
1627 int truncate_blocks(struct inode *, u64, bool);
1628 int f2fs_truncate(struct inode *, bool);
1629 int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
1630 int f2fs_setattr(struct dentry *, struct iattr *);
1631 int truncate_hole(struct inode *, pgoff_t, pgoff_t);
1632 int truncate_data_blocks_range(struct dnode_of_data *, int);
1633 long f2fs_ioctl(struct file *, unsigned int, unsigned long);
1634 long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long);
1639 void f2fs_set_inode_flags(struct inode *);
1640 struct inode *f2fs_iget(struct super_block *, unsigned long);
1641 int try_to_free_nats(struct f2fs_sb_info *, int);
1642 void update_inode(struct inode *, struct page *);
1643 void update_inode_page(struct inode *);
1644 int f2fs_write_inode(struct inode *, struct writeback_control *);
1645 void f2fs_evict_inode(struct inode *);
1646 void handle_failed_inode(struct inode *);
1651 struct dentry *f2fs_get_parent(struct dentry *child);
1656 extern unsigned char f2fs_filetype_table[F2FS_FT_MAX];
1657 void set_de_type(struct f2fs_dir_entry *, umode_t);
1659 struct f2fs_dir_entry *find_target_dentry(struct f2fs_filename *,
1660 f2fs_hash_t, int *, struct f2fs_dentry_ptr *);
1661 bool f2fs_fill_dentries(struct dir_context *, struct f2fs_dentry_ptr *,
1662 unsigned int, struct f2fs_str *);
1663 void do_make_empty_dir(struct inode *, struct inode *,
1664 struct f2fs_dentry_ptr *);
1665 struct page *init_inode_metadata(struct inode *, struct inode *,
1666 const struct qstr *, struct page *);
1667 void update_parent_metadata(struct inode *, struct inode *, unsigned int);
1668 int room_for_filename(const void *, int, int);
1669 void f2fs_drop_nlink(struct inode *, struct inode *, struct page *);
1670 struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *,
1672 struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
1673 ino_t f2fs_inode_by_name(struct inode *, struct qstr *);
1674 void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
1675 struct page *, struct inode *);
1676 int update_dent_inode(struct inode *, struct inode *, const struct qstr *);
1677 void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *,
1678 const struct qstr *, f2fs_hash_t , unsigned int);
1679 int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *, nid_t,
1681 void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *,
1683 int f2fs_do_tmpfile(struct inode *, struct inode *);
1684 bool f2fs_empty_dir(struct inode *);
1686 static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
1688 return __f2fs_add_link(d_inode(dentry->d_parent), &dentry->d_name,
1689 inode, inode->i_ino, inode->i_mode);
1695 int f2fs_commit_super(struct f2fs_sb_info *, bool);
1696 int f2fs_sync_fs(struct super_block *, int);
1697 extern __printf(3, 4)
1698 void f2fs_msg(struct super_block *, const char *, const char *, ...);
1703 f2fs_hash_t f2fs_dentry_hash(const struct qstr *);
1708 struct dnode_of_data;
1711 bool available_free_memory(struct f2fs_sb_info *, int);
1712 int need_dentry_mark(struct f2fs_sb_info *, nid_t);
1713 bool is_checkpointed_node(struct f2fs_sb_info *, nid_t);
1714 bool need_inode_block_update(struct f2fs_sb_info *, nid_t);
1715 void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
1716 int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);
1717 int truncate_inode_blocks(struct inode *, pgoff_t);
1718 int truncate_xattr_node(struct inode *, struct page *);
1719 int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t);
1720 int remove_inode_page(struct inode *);
1721 struct page *new_inode_page(struct inode *);
1722 struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *);
1723 void ra_node_page(struct f2fs_sb_info *, nid_t);
1724 struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
1725 struct page *get_node_page_ra(struct page *, int);
1726 void sync_inode_page(struct dnode_of_data *);
1727 int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *);
1728 bool alloc_nid(struct f2fs_sb_info *, nid_t *);
1729 void alloc_nid_done(struct f2fs_sb_info *, nid_t);
1730 void alloc_nid_failed(struct f2fs_sb_info *, nid_t);
1731 int try_to_free_nids(struct f2fs_sb_info *, int);
1732 void recover_inline_xattr(struct inode *, struct page *);
1733 void recover_xattr_data(struct inode *, struct page *, block_t);
1734 int recover_inode_page(struct f2fs_sb_info *, struct page *);
1735 int restore_node_summary(struct f2fs_sb_info *, unsigned int,
1736 struct f2fs_summary_block *);
1737 void flush_nat_entries(struct f2fs_sb_info *);
1738 int build_node_manager(struct f2fs_sb_info *);
1739 void destroy_node_manager(struct f2fs_sb_info *);
1740 int __init create_node_manager_caches(void);
1741 void destroy_node_manager_caches(void);
1746 void register_inmem_page(struct inode *, struct page *);
1747 int commit_inmem_pages(struct inode *, bool);
1748 void f2fs_balance_fs(struct f2fs_sb_info *);
1749 void f2fs_balance_fs_bg(struct f2fs_sb_info *);
1750 int f2fs_issue_flush(struct f2fs_sb_info *);
1751 int create_flush_cmd_control(struct f2fs_sb_info *);
1752 void destroy_flush_cmd_control(struct f2fs_sb_info *);
1753 void invalidate_blocks(struct f2fs_sb_info *, block_t);
1754 void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t);
1755 void clear_prefree_segments(struct f2fs_sb_info *, struct cp_control *);
1756 void release_discard_addrs(struct f2fs_sb_info *);
1757 bool discard_next_dnode(struct f2fs_sb_info *, block_t);
1758 int npages_for_summary_flush(struct f2fs_sb_info *, bool);
1759 void allocate_new_segments(struct f2fs_sb_info *);
1760 int f2fs_trim_fs(struct f2fs_sb_info *, struct fstrim_range *);
1761 struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
1762 void update_meta_page(struct f2fs_sb_info *, void *, block_t);
1763 void write_meta_page(struct f2fs_sb_info *, struct page *);
1764 void write_node_page(unsigned int, struct f2fs_io_info *);
1765 void write_data_page(struct dnode_of_data *, struct f2fs_io_info *);
1766 void rewrite_data_page(struct f2fs_io_info *);
1767 void f2fs_replace_block(struct f2fs_sb_info *, struct dnode_of_data *,
1768 block_t, block_t, unsigned char, bool);
1769 void allocate_data_block(struct f2fs_sb_info *, struct page *,
1770 block_t, block_t *, struct f2fs_summary *, int);
1771 void f2fs_wait_on_page_writeback(struct page *, enum page_type);
1772 void write_data_summaries(struct f2fs_sb_info *, block_t);
1773 void write_node_summaries(struct f2fs_sb_info *, block_t);
1774 int lookup_journal_in_cursum(struct f2fs_summary_block *,
1775 int, unsigned int, int);
1776 void flush_sit_entries(struct f2fs_sb_info *, struct cp_control *);
1777 int build_segment_manager(struct f2fs_sb_info *);
1778 void destroy_segment_manager(struct f2fs_sb_info *);
1779 int __init create_segment_manager_caches(void);
1780 void destroy_segment_manager_caches(void);
1785 struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
1786 struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
1787 bool is_valid_blkaddr(struct f2fs_sb_info *, block_t, int);
1788 int ra_meta_pages(struct f2fs_sb_info *, block_t, int, int);
1789 void ra_meta_pages_cond(struct f2fs_sb_info *, pgoff_t);
1790 long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
1791 void add_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
1792 void remove_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
1793 void release_dirty_inode(struct f2fs_sb_info *);
1794 bool exist_written_data(struct f2fs_sb_info *, nid_t, int);
1795 int acquire_orphan_inode(struct f2fs_sb_info *);
1796 void release_orphan_inode(struct f2fs_sb_info *);
1797 void add_orphan_inode(struct f2fs_sb_info *, nid_t);
1798 void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
1799 int recover_orphan_inodes(struct f2fs_sb_info *);
1800 int get_valid_checkpoint(struct f2fs_sb_info *);
1801 void update_dirty_page(struct inode *, struct page *);
1802 void add_dirty_dir_inode(struct inode *);
1803 void remove_dirty_dir_inode(struct inode *);
1804 void sync_dirty_dir_inodes(struct f2fs_sb_info *);
1805 void write_checkpoint(struct f2fs_sb_info *, struct cp_control *);
1806 void init_ino_entry_info(struct f2fs_sb_info *);
1807 int __init create_checkpoint_caches(void);
1808 void destroy_checkpoint_caches(void);
1813 void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int);
1814 int f2fs_submit_page_bio(struct f2fs_io_info *);
1815 void f2fs_submit_page_mbio(struct f2fs_io_info *);
1816 void set_data_blkaddr(struct dnode_of_data *);
1817 int reserve_new_block(struct dnode_of_data *);
1818 int f2fs_get_block(struct dnode_of_data *, pgoff_t);
1819 int f2fs_reserve_block(struct dnode_of_data *, pgoff_t);
1820 struct page *get_read_data_page(struct inode *, pgoff_t, int);
1821 struct page *find_data_page(struct inode *, pgoff_t);
1822 struct page *get_lock_data_page(struct inode *, pgoff_t);
1823 struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
1824 int do_write_data_page(struct f2fs_io_info *);
1825 int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64);
1826 void f2fs_invalidate_page(struct page *, unsigned int, unsigned int);
1827 int f2fs_release_page(struct page *, gfp_t);
1832 int start_gc_thread(struct f2fs_sb_info *);
1833 void stop_gc_thread(struct f2fs_sb_info *);
1834 block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *);
1835 int f2fs_gc(struct f2fs_sb_info *, bool);
1836 void build_gc_manager(struct f2fs_sb_info *);
1841 int recover_fsync_data(struct f2fs_sb_info *);
1842 bool space_for_roll_forward(struct f2fs_sb_info *);
1847 #ifdef CONFIG_F2FS_STAT_FS
1848 struct f2fs_stat_info {
1849 struct list_head stat_list;
1850 struct f2fs_sb_info *sbi;
1851 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
1852 int main_area_segs, main_area_sections, main_area_zones;
1853 unsigned long long hit_largest, hit_cached, hit_rbtree;
1854 unsigned long long hit_total, total_ext;
1855 int ext_tree, ext_node;
1856 int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta;
1857 int nats, dirty_nats, sits, dirty_sits, fnids;
1858 int total_count, utilization;
1859 int bg_gc, inmem_pages, wb_pages;
1860 int inline_xattr, inline_inode, inline_dir;
1861 unsigned int valid_count, valid_node_count, valid_inode_count;
1862 unsigned int bimodal, avg_vblocks;
1863 int util_free, util_valid, util_invalid;
1864 int rsvd_segs, overp_segs;
1865 int dirty_count, node_pages, meta_pages;
1866 int prefree_count, call_count, cp_count;
1867 int tot_segs, node_segs, data_segs, free_segs, free_secs;
1868 int bg_node_segs, bg_data_segs;
1869 int tot_blks, data_blks, node_blks;
1870 int bg_data_blks, bg_node_blks;
1871 int curseg[NR_CURSEG_TYPE];
1872 int cursec[NR_CURSEG_TYPE];
1873 int curzone[NR_CURSEG_TYPE];
1875 unsigned int segment_count[2];
1876 unsigned int block_count[2];
1877 unsigned int inplace_count;
1878 unsigned long long base_mem, cache_mem, page_mem;
1881 static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
1883 return (struct f2fs_stat_info *)sbi->stat_info;
1886 #define stat_inc_cp_count(si) ((si)->cp_count++)
1887 #define stat_inc_call_count(si) ((si)->call_count++)
1888 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1889 #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1890 #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
1891 #define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext))
1892 #define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree))
1893 #define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest))
1894 #define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached))
1895 #define stat_inc_inline_xattr(inode) \
1897 if (f2fs_has_inline_xattr(inode)) \
1898 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
1900 #define stat_dec_inline_xattr(inode) \
1902 if (f2fs_has_inline_xattr(inode)) \
1903 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
1905 #define stat_inc_inline_inode(inode) \
1907 if (f2fs_has_inline_data(inode)) \
1908 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
1910 #define stat_dec_inline_inode(inode) \
1912 if (f2fs_has_inline_data(inode)) \
1913 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
1915 #define stat_inc_inline_dir(inode) \
1917 if (f2fs_has_inline_dentry(inode)) \
1918 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
1920 #define stat_dec_inline_dir(inode) \
1922 if (f2fs_has_inline_dentry(inode)) \
1923 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
1925 #define stat_inc_seg_type(sbi, curseg) \
1926 ((sbi)->segment_count[(curseg)->alloc_type]++)
1927 #define stat_inc_block_count(sbi, curseg) \
1928 ((sbi)->block_count[(curseg)->alloc_type]++)
1929 #define stat_inc_inplace_blocks(sbi) \
1930 (atomic_inc(&(sbi)->inplace_count))
1931 #define stat_inc_seg_count(sbi, type, gc_type) \
1933 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1935 if (type == SUM_TYPE_DATA) { \
1937 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
1940 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
1944 #define stat_inc_tot_blk_count(si, blks) \
1945 (si->tot_blks += (blks))
1947 #define stat_inc_data_blk_count(sbi, blks, gc_type) \
1949 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1950 stat_inc_tot_blk_count(si, blks); \
1951 si->data_blks += (blks); \
1952 si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \
1955 #define stat_inc_node_blk_count(sbi, blks, gc_type) \
1957 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1958 stat_inc_tot_blk_count(si, blks); \
1959 si->node_blks += (blks); \
1960 si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \
1963 int f2fs_build_stats(struct f2fs_sb_info *);
1964 void f2fs_destroy_stats(struct f2fs_sb_info *);
1965 void __init f2fs_create_root_stats(void);
1966 void f2fs_destroy_root_stats(void);
1968 #define stat_inc_cp_count(si)
1969 #define stat_inc_call_count(si)
1970 #define stat_inc_bggc_count(si)
1971 #define stat_inc_dirty_dir(sbi)
1972 #define stat_dec_dirty_dir(sbi)
1973 #define stat_inc_total_hit(sb)
1974 #define stat_inc_rbtree_node_hit(sb)
1975 #define stat_inc_largest_node_hit(sbi)
1976 #define stat_inc_cached_node_hit(sbi)
1977 #define stat_inc_inline_xattr(inode)
1978 #define stat_dec_inline_xattr(inode)
1979 #define stat_inc_inline_inode(inode)
1980 #define stat_dec_inline_inode(inode)
1981 #define stat_inc_inline_dir(inode)
1982 #define stat_dec_inline_dir(inode)
1983 #define stat_inc_seg_type(sbi, curseg)
1984 #define stat_inc_block_count(sbi, curseg)
1985 #define stat_inc_inplace_blocks(sbi)
1986 #define stat_inc_seg_count(sbi, type, gc_type)
1987 #define stat_inc_tot_blk_count(si, blks)
1988 #define stat_inc_data_blk_count(sbi, blks, gc_type)
1989 #define stat_inc_node_blk_count(sbi, blks, gc_type)
1991 static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
1992 static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
1993 static inline void __init f2fs_create_root_stats(void) { }
1994 static inline void f2fs_destroy_root_stats(void) { }
1997 extern const struct file_operations f2fs_dir_operations;
1998 extern const struct file_operations f2fs_file_operations;
1999 extern const struct inode_operations f2fs_file_inode_operations;
2000 extern const struct address_space_operations f2fs_dblock_aops;
2001 extern const struct address_space_operations f2fs_node_aops;
2002 extern const struct address_space_operations f2fs_meta_aops;
2003 extern const struct inode_operations f2fs_dir_inode_operations;
2004 extern const struct inode_operations f2fs_symlink_inode_operations;
2005 extern const struct inode_operations f2fs_encrypted_symlink_inode_operations;
2006 extern const struct inode_operations f2fs_special_inode_operations;
2007 extern struct kmem_cache *inode_entry_slab;
2012 bool f2fs_may_inline_data(struct inode *);
2013 bool f2fs_may_inline_dentry(struct inode *);
2014 void read_inline_data(struct page *, struct page *);
2015 bool truncate_inline_inode(struct page *, u64);
2016 int f2fs_read_inline_data(struct inode *, struct page *);
2017 int f2fs_convert_inline_page(struct dnode_of_data *, struct page *);
2018 int f2fs_convert_inline_inode(struct inode *);
2019 int f2fs_write_inline_data(struct inode *, struct page *);
2020 bool recover_inline_data(struct inode *, struct page *);
2021 struct f2fs_dir_entry *find_in_inline_dir(struct inode *,
2022 struct f2fs_filename *, struct page **);
2023 struct f2fs_dir_entry *f2fs_parent_inline_dir(struct inode *, struct page **);
2024 int make_empty_inline_dir(struct inode *inode, struct inode *, struct page *);
2025 int f2fs_add_inline_entry(struct inode *, const struct qstr *, struct inode *,
2027 void f2fs_delete_inline_entry(struct f2fs_dir_entry *, struct page *,
2028 struct inode *, struct inode *);
2029 bool f2fs_empty_inline_dir(struct inode *);
2030 int f2fs_read_inline_dir(struct file *, struct dir_context *,
2036 unsigned long f2fs_shrink_count(struct shrinker *, struct shrink_control *);
2037 unsigned long f2fs_shrink_scan(struct shrinker *, struct shrink_control *);
2038 void f2fs_join_shrinker(struct f2fs_sb_info *);
2039 void f2fs_leave_shrinker(struct f2fs_sb_info *);
2044 unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *, int);
2045 void f2fs_drop_largest_extent(struct inode *, pgoff_t);
2046 void f2fs_init_extent_tree(struct inode *, struct f2fs_extent *);
2047 unsigned int f2fs_destroy_extent_node(struct inode *);
2048 void f2fs_destroy_extent_tree(struct inode *);
2049 bool f2fs_lookup_extent_cache(struct inode *, pgoff_t, struct extent_info *);
2050 void f2fs_update_extent_cache(struct dnode_of_data *);
2051 void f2fs_update_extent_cache_range(struct dnode_of_data *dn,
2052 pgoff_t, block_t, unsigned int);
2053 void init_extent_cache_info(struct f2fs_sb_info *);
2054 int __init create_extent_cache(void);
2055 void destroy_extent_cache(void);
2060 static inline int f2fs_encrypted_inode(struct inode *inode)
2062 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2063 return file_is_encrypt(inode);
2069 static inline void f2fs_set_encrypted_inode(struct inode *inode)
2071 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2072 file_set_encrypt(inode);
2076 static inline bool f2fs_bio_encrypted(struct bio *bio)
2078 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2079 return unlikely(bio->bi_private != NULL);
2085 static inline int f2fs_sb_has_crypto(struct super_block *sb)
2087 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2088 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_ENCRYPT);
2094 static inline bool f2fs_may_encrypt(struct inode *inode)
2096 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2097 mode_t mode = inode->i_mode;
2099 return (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode));
2105 /* crypto_policy.c */
2106 int f2fs_is_child_context_consistent_with_parent(struct inode *,
2108 int f2fs_inherit_context(struct inode *, struct inode *, struct page *);
2109 int f2fs_process_policy(const struct f2fs_encryption_policy *, struct inode *);
2110 int f2fs_get_policy(struct inode *, struct f2fs_encryption_policy *);
2113 extern struct kmem_cache *f2fs_crypt_info_cachep;
2114 bool f2fs_valid_contents_enc_mode(uint32_t);
2115 uint32_t f2fs_validate_encryption_key_size(uint32_t, uint32_t);
2116 struct f2fs_crypto_ctx *f2fs_get_crypto_ctx(struct inode *);
2117 void f2fs_release_crypto_ctx(struct f2fs_crypto_ctx *);
2118 struct page *f2fs_encrypt(struct inode *, struct page *);
2119 int f2fs_decrypt(struct f2fs_crypto_ctx *, struct page *);
2120 int f2fs_decrypt_one(struct inode *, struct page *);
2121 void f2fs_end_io_crypto_work(struct f2fs_crypto_ctx *, struct bio *);
2124 void f2fs_free_encryption_info(struct inode *, struct f2fs_crypt_info *);
2125 int _f2fs_get_encryption_info(struct inode *inode);
2127 /* crypto_fname.c */
2128 bool f2fs_valid_filenames_enc_mode(uint32_t);
2129 u32 f2fs_fname_crypto_round_up(u32, u32);
2130 int f2fs_fname_crypto_alloc_buffer(struct inode *, u32, struct f2fs_str *);
2131 int f2fs_fname_disk_to_usr(struct inode *, f2fs_hash_t *,
2132 const struct f2fs_str *, struct f2fs_str *);
2133 int f2fs_fname_usr_to_disk(struct inode *, const struct qstr *,
2136 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2137 void f2fs_restore_and_release_control_page(struct page **);
2138 void f2fs_restore_control_page(struct page *);
2140 int __init f2fs_init_crypto(void);
2141 int f2fs_crypto_initialize(void);
2142 void f2fs_exit_crypto(void);
2144 int f2fs_has_encryption_key(struct inode *);
2146 static inline int f2fs_get_encryption_info(struct inode *inode)
2148 struct f2fs_crypt_info *ci = F2FS_I(inode)->i_crypt_info;
2151 (ci->ci_keyring_key &&
2152 (ci->ci_keyring_key->flags & ((1 << KEY_FLAG_INVALIDATED) |
2153 (1 << KEY_FLAG_REVOKED) |
2154 (1 << KEY_FLAG_DEAD)))))
2155 return _f2fs_get_encryption_info(inode);
2159 void f2fs_fname_crypto_free_buffer(struct f2fs_str *);
2160 int f2fs_fname_setup_filename(struct inode *, const struct qstr *,
2161 int lookup, struct f2fs_filename *);
2162 void f2fs_fname_free_filename(struct f2fs_filename *);
2164 static inline void f2fs_restore_and_release_control_page(struct page **p) { }
2165 static inline void f2fs_restore_control_page(struct page *p) { }
2167 static inline int __init f2fs_init_crypto(void) { return 0; }
2168 static inline void f2fs_exit_crypto(void) { }
2170 static inline int f2fs_has_encryption_key(struct inode *i) { return 0; }
2171 static inline int f2fs_get_encryption_info(struct inode *i) { return 0; }
2172 static inline void f2fs_fname_crypto_free_buffer(struct f2fs_str *p) { }
2174 static inline int f2fs_fname_setup_filename(struct inode *dir,
2175 const struct qstr *iname,
2176 int lookup, struct f2fs_filename *fname)
2178 memset(fname, 0, sizeof(struct f2fs_filename));
2179 fname->usr_fname = iname;
2180 fname->disk_name.name = (unsigned char *)iname->name;
2181 fname->disk_name.len = iname->len;
2185 static inline void f2fs_fname_free_filename(struct f2fs_filename *fname) { }