4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
14 #include <linux/types.h>
15 #include <linux/page-flags.h>
16 #include <linux/buffer_head.h>
17 #include <linux/slab.h>
18 #include <linux/crc32.h>
19 #include <linux/magic.h>
20 #include <linux/kobject.h>
21 #include <linux/sched.h>
22 #include <linux/vmalloc.h>
23 #include <linux/bio.h>
24 #include <linux/blkdev.h>
26 #ifdef CONFIG_F2FS_CHECK_FS
27 #define f2fs_bug_on(sbi, condition) BUG_ON(condition)
29 #define f2fs_bug_on(sbi, condition) \
31 if (unlikely(condition)) { \
33 set_sbi_flag(sbi, SBI_NEED_FSCK); \
41 #define F2FS_MOUNT_BG_GC 0x00000001
42 #define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
43 #define F2FS_MOUNT_DISCARD 0x00000004
44 #define F2FS_MOUNT_NOHEAP 0x00000008
45 #define F2FS_MOUNT_XATTR_USER 0x00000010
46 #define F2FS_MOUNT_POSIX_ACL 0x00000020
47 #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
48 #define F2FS_MOUNT_INLINE_XATTR 0x00000080
49 #define F2FS_MOUNT_INLINE_DATA 0x00000100
50 #define F2FS_MOUNT_INLINE_DENTRY 0x00000200
51 #define F2FS_MOUNT_FLUSH_MERGE 0x00000400
52 #define F2FS_MOUNT_NOBARRIER 0x00000800
53 #define F2FS_MOUNT_FASTBOOT 0x00001000
54 #define F2FS_MOUNT_EXTENT_CACHE 0x00002000
55 #define F2FS_MOUNT_FORCE_FG_GC 0x00004000
56 #define F2FS_MOUNT_DATA_FLUSH 0x00008000
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)
127 #define DEF_CP_INTERVAL 60 /* 60 secs */
128 #define DEF_IDLE_INTERVAL 120 /* 2 mins */
139 * For CP/NAT/SIT/SSA readahead
149 /* for the list of ino */
151 ORPHAN_INO, /* for orphan ino list */
152 APPEND_INO, /* for append ino list */
153 UPDATE_INO, /* for update ino list */
154 MAX_INO_ENTRY, /* max. list */
158 struct list_head list; /* list head */
159 nid_t ino; /* inode number */
162 /* for the list of inodes to be GCed */
164 struct list_head list; /* list head */
165 struct inode *inode; /* vfs inode pointer */
168 /* for the list of blockaddresses to be discarded */
169 struct discard_entry {
170 struct list_head list; /* list head */
171 block_t blkaddr; /* block address to be discarded */
172 int len; /* # of consecutive blocks of the discard */
175 /* for the list of fsync inodes, used only during recovery */
176 struct fsync_inode_entry {
177 struct list_head list; /* list head */
178 struct inode *inode; /* vfs inode pointer */
179 block_t blkaddr; /* block address locating the last fsync */
180 block_t last_dentry; /* block address locating the last dentry */
181 block_t last_inode; /* block address locating the last inode */
184 #define nats_in_cursum(jnl) (le16_to_cpu(jnl->n_nats))
185 #define sits_in_cursum(jnl) (le16_to_cpu(jnl->n_sits))
187 #define nat_in_journal(jnl, i) (jnl->nat_j.entries[i].ne)
188 #define nid_in_journal(jnl, i) (jnl->nat_j.entries[i].nid)
189 #define sit_in_journal(jnl, i) (jnl->sit_j.entries[i].se)
190 #define segno_in_journal(jnl, i) (jnl->sit_j.entries[i].segno)
192 #define MAX_NAT_JENTRIES(jnl) (NAT_JOURNAL_ENTRIES - nats_in_cursum(jnl))
193 #define MAX_SIT_JENTRIES(jnl) (SIT_JOURNAL_ENTRIES - sits_in_cursum(jnl))
195 static inline int update_nats_in_cursum(struct f2fs_journal *journal, int i)
197 int before = nats_in_cursum(journal);
198 journal->n_nats = cpu_to_le16(before + i);
202 static inline int update_sits_in_cursum(struct f2fs_journal *journal, int i)
204 int before = sits_in_cursum(journal);
205 journal->n_sits = cpu_to_le16(before + i);
209 static inline bool __has_cursum_space(struct f2fs_journal *journal,
212 if (type == NAT_JOURNAL)
213 return size <= MAX_NAT_JENTRIES(journal);
214 return size <= MAX_SIT_JENTRIES(journal);
220 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
221 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
222 #define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
224 #define F2FS_IOCTL_MAGIC 0xf5
225 #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
226 #define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
227 #define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
228 #define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
229 #define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
230 #define F2FS_IOC_GARBAGE_COLLECT _IO(F2FS_IOCTL_MAGIC, 6)
231 #define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7)
232 #define F2FS_IOC_DEFRAGMENT _IO(F2FS_IOCTL_MAGIC, 8)
234 #define F2FS_IOC_SET_ENCRYPTION_POLICY \
235 _IOR('f', 19, struct f2fs_encryption_policy)
236 #define F2FS_IOC_GET_ENCRYPTION_PWSALT \
237 _IOW('f', 20, __u8[16])
238 #define F2FS_IOC_GET_ENCRYPTION_POLICY \
239 _IOW('f', 21, struct f2fs_encryption_policy)
242 * should be same as XFS_IOC_GOINGDOWN.
243 * Flags for going down operation used by FS_IOC_GOINGDOWN
245 #define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
246 #define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
247 #define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
248 #define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
249 #define F2FS_GOING_DOWN_METAFLUSH 0x3 /* going down with meta flush */
251 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
253 * ioctl commands in 32 bit emulation
255 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
256 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
257 #define F2FS_IOC32_GETVERSION FS_IOC32_GETVERSION
260 struct f2fs_defragment {
266 * For INODE and NODE manager
268 /* for directory operations */
274 struct f2fs_filename {
275 const struct qstr *usr_fname;
276 struct f2fs_str disk_name;
278 #ifdef CONFIG_F2FS_FS_ENCRYPTION
279 struct f2fs_str crypto_buf;
283 #define FSTR_INIT(n, l) { .name = n, .len = l }
284 #define FSTR_TO_QSTR(f) QSTR_INIT((f)->name, (f)->len)
285 #define fname_name(p) ((p)->disk_name.name)
286 #define fname_len(p) ((p)->disk_name.len)
288 struct f2fs_dentry_ptr {
291 struct f2fs_dir_entry *dentry;
292 __u8 (*filename)[F2FS_SLOT_LEN];
296 static inline void make_dentry_ptr(struct inode *inode,
297 struct f2fs_dentry_ptr *d, void *src, int type)
302 struct f2fs_dentry_block *t = (struct f2fs_dentry_block *)src;
303 d->max = NR_DENTRY_IN_BLOCK;
304 d->bitmap = &t->dentry_bitmap;
305 d->dentry = t->dentry;
306 d->filename = t->filename;
308 struct f2fs_inline_dentry *t = (struct f2fs_inline_dentry *)src;
309 d->max = NR_INLINE_DENTRY;
310 d->bitmap = &t->dentry_bitmap;
311 d->dentry = t->dentry;
312 d->filename = t->filename;
317 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
318 * as its node offset to distinguish from index node blocks.
319 * But some bits are used to mark the node block.
321 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
324 ALLOC_NODE, /* allocate a new node page if needed */
325 LOOKUP_NODE, /* look up a node without readahead */
327 * look up a node with readahead called
332 #define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */
334 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
336 /* vector size for gang look-up from extent cache that consists of radix tree */
337 #define EXT_TREE_VEC_SIZE 64
339 /* for in-memory extent cache entry */
340 #define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
342 /* number of extent info in extent cache we try to shrink */
343 #define EXTENT_CACHE_SHRINK_NUMBER 128
346 unsigned int fofs; /* start offset in a file */
347 u32 blk; /* start block address of the extent */
348 unsigned int len; /* length of the extent */
352 struct rb_node rb_node; /* rb node located in rb-tree */
353 struct list_head list; /* node in global extent list of sbi */
354 struct extent_info ei; /* extent info */
355 struct extent_tree *et; /* extent tree pointer */
359 nid_t ino; /* inode number */
360 struct rb_root root; /* root of extent info rb-tree */
361 struct extent_node *cached_en; /* recently accessed extent node */
362 struct extent_info largest; /* largested extent info */
363 struct list_head list; /* to be used by sbi->zombie_list */
364 rwlock_t lock; /* protect extent info rb-tree */
365 atomic_t node_cnt; /* # of extent node in rb-tree*/
369 * This structure is taken from ext4_map_blocks.
371 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
373 #define F2FS_MAP_NEW (1 << BH_New)
374 #define F2FS_MAP_MAPPED (1 << BH_Mapped)
375 #define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten)
376 #define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
379 struct f2fs_map_blocks {
383 unsigned int m_flags;
384 pgoff_t *m_next_pgofs; /* point next possible non-hole pgofs */
387 /* for flag in get_data_block */
388 #define F2FS_GET_BLOCK_READ 0
389 #define F2FS_GET_BLOCK_DIO 1
390 #define F2FS_GET_BLOCK_FIEMAP 2
391 #define F2FS_GET_BLOCK_BMAP 3
392 #define F2FS_GET_BLOCK_PRE_DIO 4
393 #define F2FS_GET_BLOCK_PRE_AIO 5
396 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
398 #define FADVISE_COLD_BIT 0x01
399 #define FADVISE_LOST_PINO_BIT 0x02
400 #define FADVISE_ENCRYPT_BIT 0x04
401 #define FADVISE_ENC_NAME_BIT 0x08
403 #define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
404 #define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
405 #define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
406 #define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
407 #define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
408 #define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
409 #define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
410 #define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
411 #define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
412 #define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
413 #define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
415 /* Encryption algorithms */
416 #define F2FS_ENCRYPTION_MODE_INVALID 0
417 #define F2FS_ENCRYPTION_MODE_AES_256_XTS 1
418 #define F2FS_ENCRYPTION_MODE_AES_256_GCM 2
419 #define F2FS_ENCRYPTION_MODE_AES_256_CBC 3
420 #define F2FS_ENCRYPTION_MODE_AES_256_CTS 4
422 #include "f2fs_crypto.h"
424 #define DEF_DIR_LEVEL 0
426 struct f2fs_inode_info {
427 struct inode vfs_inode; /* serve a vfs inode */
428 unsigned long i_flags; /* keep an inode flags for ioctl */
429 unsigned char i_advise; /* use to give file attribute hints */
430 unsigned char i_dir_level; /* use for dentry level for large dir */
431 unsigned int i_current_depth; /* use only in directory structure */
432 unsigned int i_pino; /* parent inode number */
433 umode_t i_acl_mode; /* keep file acl mode temporarily */
435 /* Use below internally in f2fs*/
436 unsigned long flags; /* use to pass per-file flags */
437 struct rw_semaphore i_sem; /* protect fi info */
438 atomic_t dirty_pages; /* # of dirty pages */
439 f2fs_hash_t chash; /* hash value of given file name */
440 unsigned int clevel; /* maximum level of given file name */
441 nid_t i_xattr_nid; /* node id that contains xattrs */
442 unsigned long long xattr_ver; /* cp version of xattr modification */
444 struct list_head dirty_list; /* linked in global dirty list */
445 struct list_head inmem_pages; /* inmemory pages managed by f2fs */
446 struct mutex inmem_lock; /* lock for inmemory pages */
448 struct extent_tree *extent_tree; /* cached extent_tree entry */
450 #ifdef CONFIG_F2FS_FS_ENCRYPTION
451 /* Encryption params */
452 struct f2fs_crypt_info *i_crypt_info;
456 static inline void get_extent_info(struct extent_info *ext,
457 struct f2fs_extent i_ext)
459 ext->fofs = le32_to_cpu(i_ext.fofs);
460 ext->blk = le32_to_cpu(i_ext.blk);
461 ext->len = le32_to_cpu(i_ext.len);
464 static inline void set_raw_extent(struct extent_info *ext,
465 struct f2fs_extent *i_ext)
467 i_ext->fofs = cpu_to_le32(ext->fofs);
468 i_ext->blk = cpu_to_le32(ext->blk);
469 i_ext->len = cpu_to_le32(ext->len);
472 static inline void set_extent_info(struct extent_info *ei, unsigned int fofs,
473 u32 blk, unsigned int len)
480 static inline bool __is_extent_same(struct extent_info *ei1,
481 struct extent_info *ei2)
483 return (ei1->fofs == ei2->fofs && ei1->blk == ei2->blk &&
484 ei1->len == ei2->len);
487 static inline bool __is_extent_mergeable(struct extent_info *back,
488 struct extent_info *front)
490 return (back->fofs + back->len == front->fofs &&
491 back->blk + back->len == front->blk);
494 static inline bool __is_back_mergeable(struct extent_info *cur,
495 struct extent_info *back)
497 return __is_extent_mergeable(back, cur);
500 static inline bool __is_front_mergeable(struct extent_info *cur,
501 struct extent_info *front)
503 return __is_extent_mergeable(cur, front);
506 static inline void __try_update_largest_extent(struct extent_tree *et,
507 struct extent_node *en)
509 if (en->ei.len > et->largest.len)
510 et->largest = en->ei;
513 struct f2fs_nm_info {
514 block_t nat_blkaddr; /* base disk address of NAT */
515 nid_t max_nid; /* maximum possible node ids */
516 nid_t available_nids; /* maximum available node ids */
517 nid_t next_scan_nid; /* the next nid to be scanned */
518 unsigned int ram_thresh; /* control the memory footprint */
519 unsigned int ra_nid_pages; /* # of nid pages to be readaheaded */
520 unsigned int dirty_nats_ratio; /* control dirty nats ratio threshold */
522 /* NAT cache management */
523 struct radix_tree_root nat_root;/* root of the nat entry cache */
524 struct radix_tree_root nat_set_root;/* root of the nat set cache */
525 struct rw_semaphore nat_tree_lock; /* protect nat_tree_lock */
526 struct list_head nat_entries; /* cached nat entry list (clean) */
527 unsigned int nat_cnt; /* the # of cached nat entries */
528 unsigned int dirty_nat_cnt; /* total num of nat entries in set */
530 /* free node ids management */
531 struct radix_tree_root free_nid_root;/* root of the free_nid cache */
532 struct list_head free_nid_list; /* a list for free nids */
533 spinlock_t free_nid_list_lock; /* protect free nid list */
534 unsigned int fcnt; /* the number of free node id */
535 struct mutex build_lock; /* lock for build free nids */
538 char *nat_bitmap; /* NAT bitmap pointer */
539 int bitmap_size; /* bitmap size */
543 * this structure is used as one of function parameters.
544 * all the information are dedicated to a given direct node block determined
545 * by the data offset in a file.
547 struct dnode_of_data {
548 struct inode *inode; /* vfs inode pointer */
549 struct page *inode_page; /* its inode page, NULL is possible */
550 struct page *node_page; /* cached direct node page */
551 nid_t nid; /* node id of the direct node block */
552 unsigned int ofs_in_node; /* data offset in the node page */
553 bool inode_page_locked; /* inode page is locked or not */
554 bool node_changed; /* is node block changed */
555 char cur_level; /* level of hole node page */
556 char max_level; /* level of current page located */
557 block_t data_blkaddr; /* block address of the node block */
560 static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
561 struct page *ipage, struct page *npage, nid_t nid)
563 memset(dn, 0, sizeof(*dn));
565 dn->inode_page = ipage;
566 dn->node_page = npage;
573 * By default, there are 6 active log areas across the whole main area.
574 * When considering hot and cold data separation to reduce cleaning overhead,
575 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
577 * In the current design, you should not change the numbers intentionally.
578 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
579 * logs individually according to the underlying devices. (default: 6)
580 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
581 * data and 8 for node logs.
583 #define NR_CURSEG_DATA_TYPE (3)
584 #define NR_CURSEG_NODE_TYPE (3)
585 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
588 CURSEG_HOT_DATA = 0, /* directory entry blocks */
589 CURSEG_WARM_DATA, /* data blocks */
590 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
591 CURSEG_HOT_NODE, /* direct node blocks of directory files */
592 CURSEG_WARM_NODE, /* direct node blocks of normal files */
593 CURSEG_COLD_NODE, /* indirect node blocks */
595 CURSEG_DIRECT_IO, /* to use for the direct IO path */
599 struct completion wait;
600 struct llist_node llnode;
604 struct flush_cmd_control {
605 struct task_struct *f2fs_issue_flush; /* flush thread */
606 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
607 struct llist_head issue_list; /* list for command issue */
608 struct llist_node *dispatch_list; /* list for command dispatch */
611 struct f2fs_sm_info {
612 struct sit_info *sit_info; /* whole segment information */
613 struct free_segmap_info *free_info; /* free segment information */
614 struct dirty_seglist_info *dirty_info; /* dirty segment information */
615 struct curseg_info *curseg_array; /* active segment information */
617 block_t seg0_blkaddr; /* block address of 0'th segment */
618 block_t main_blkaddr; /* start block address of main area */
619 block_t ssa_blkaddr; /* start block address of SSA area */
621 unsigned int segment_count; /* total # of segments */
622 unsigned int main_segments; /* # of segments in main area */
623 unsigned int reserved_segments; /* # of reserved segments */
624 unsigned int ovp_segments; /* # of overprovision segments */
626 /* a threshold to reclaim prefree segments */
627 unsigned int rec_prefree_segments;
629 /* for small discard management */
630 struct list_head discard_list; /* 4KB discard list */
631 int nr_discards; /* # of discards in the list */
632 int max_discards; /* max. discards to be issued */
634 /* for batched trimming */
635 unsigned int trim_sections; /* # of sections to trim */
637 struct list_head sit_entry_set; /* sit entry set list */
639 unsigned int ipu_policy; /* in-place-update policy */
640 unsigned int min_ipu_util; /* in-place-update threshold */
641 unsigned int min_fsync_blocks; /* threshold for fsync */
643 /* for flush command control */
644 struct flush_cmd_control *cmd_control_info;
652 * COUNT_TYPE for monitoring
654 * f2fs monitors the number of several block types such as on-writeback,
655 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
668 * The below are the page types of bios used in submit_bio().
669 * The available types are:
670 * DATA User data pages. It operates as async mode.
671 * NODE Node pages. It operates as async mode.
672 * META FS metadata pages such as SIT, NAT, CP.
673 * NR_PAGE_TYPE The number of page types.
674 * META_FLUSH Make sure the previous pages are written
675 * with waiting the bio's completion
676 * ... Only can be used with META.
678 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
685 INMEM, /* the below types are used by tracepoints only. */
692 struct f2fs_io_info {
693 struct f2fs_sb_info *sbi; /* f2fs_sb_info pointer */
694 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
695 int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
696 block_t new_blkaddr; /* new block address to be written */
697 block_t old_blkaddr; /* old block address before Cow */
698 struct page *page; /* page to be written */
699 struct page *encrypted_page; /* encrypted page */
702 #define is_read_io(rw) (((rw) & 1) == READ)
703 struct f2fs_bio_info {
704 struct f2fs_sb_info *sbi; /* f2fs superblock */
705 struct bio *bio; /* bios to merge */
706 sector_t last_block_in_bio; /* last block number */
707 struct f2fs_io_info fio; /* store buffered io info. */
708 struct rw_semaphore io_rwsem; /* blocking op for bio */
712 DIR_INODE, /* for dirty dir inode */
713 FILE_INODE, /* for dirty regular/symlink inode */
717 /* for inner inode cache management */
718 struct inode_management {
719 struct radix_tree_root ino_root; /* ino entry array */
720 spinlock_t ino_lock; /* for ino entry lock */
721 struct list_head ino_list; /* inode list head */
722 unsigned long ino_num; /* number of entries */
725 /* For s_flag in struct f2fs_sb_info */
727 SBI_IS_DIRTY, /* dirty flag for checkpoint */
728 SBI_IS_CLOSE, /* specify unmounting */
729 SBI_NEED_FSCK, /* need fsck.f2fs to fix */
730 SBI_POR_DOING, /* recovery is doing or not */
739 struct f2fs_sb_info {
740 struct super_block *sb; /* pointer to VFS super block */
741 struct proc_dir_entry *s_proc; /* proc entry */
742 struct f2fs_super_block *raw_super; /* raw super block pointer */
743 int valid_super_block; /* valid super block no */
744 int s_flag; /* flags for sbi */
746 /* for node-related operations */
747 struct f2fs_nm_info *nm_info; /* node manager */
748 struct inode *node_inode; /* cache node blocks */
750 /* for segment-related operations */
751 struct f2fs_sm_info *sm_info; /* segment manager */
753 /* for bio operations */
754 struct f2fs_bio_info read_io; /* for read bios */
755 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */
758 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
759 struct inode *meta_inode; /* cache meta blocks */
760 struct mutex cp_mutex; /* checkpoint procedure lock */
761 struct rw_semaphore cp_rwsem; /* blocking FS operations */
762 struct rw_semaphore node_write; /* locking node writes */
763 struct mutex writepages; /* mutex for writepages() */
764 wait_queue_head_t cp_wait;
765 unsigned long last_time[MAX_TIME]; /* to store time in jiffies */
766 long interval_time[MAX_TIME]; /* to store thresholds */
768 struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */
770 /* for orphan inode, use 0'th array */
771 unsigned int max_orphans; /* max orphan inodes */
773 /* for inode management */
774 struct list_head inode_list[NR_INODE_TYPE]; /* dirty inode list */
775 spinlock_t inode_lock[NR_INODE_TYPE]; /* for dirty inode list lock */
777 /* for extent tree cache */
778 struct radix_tree_root extent_tree_root;/* cache extent cache entries */
779 struct rw_semaphore extent_tree_lock; /* locking extent radix tree */
780 struct list_head extent_list; /* lru list for shrinker */
781 spinlock_t extent_lock; /* locking extent lru list */
782 atomic_t total_ext_tree; /* extent tree count */
783 struct list_head zombie_list; /* extent zombie tree list */
784 atomic_t total_zombie_tree; /* extent zombie tree count */
785 atomic_t total_ext_node; /* extent info count */
787 /* basic filesystem units */
788 unsigned int log_sectors_per_block; /* log2 sectors per block */
789 unsigned int log_blocksize; /* log2 block size */
790 unsigned int blocksize; /* block size */
791 unsigned int root_ino_num; /* root inode number*/
792 unsigned int node_ino_num; /* node inode number*/
793 unsigned int meta_ino_num; /* meta inode number*/
794 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
795 unsigned int blocks_per_seg; /* blocks per segment */
796 unsigned int segs_per_sec; /* segments per section */
797 unsigned int secs_per_zone; /* sections per zone */
798 unsigned int total_sections; /* total section count */
799 unsigned int total_node_count; /* total node block count */
800 unsigned int total_valid_node_count; /* valid node block count */
801 unsigned int total_valid_inode_count; /* valid inode count */
802 loff_t max_file_blocks; /* max block index of file */
803 int active_logs; /* # of active logs */
804 int dir_level; /* directory level */
806 block_t user_block_count; /* # of user blocks */
807 block_t total_valid_block_count; /* # of valid blocks */
808 block_t alloc_valid_block_count; /* # of allocated blocks */
809 block_t discard_blks; /* discard command candidats */
810 block_t last_valid_block_count; /* for recovery */
811 u32 s_next_generation; /* for NFS support */
812 atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */
814 struct f2fs_mount_info mount_opt; /* mount options */
816 /* for cleaning operations */
817 struct mutex gc_mutex; /* mutex for GC */
818 struct f2fs_gc_kthread *gc_thread; /* GC thread */
819 unsigned int cur_victim_sec; /* current victim section num */
821 /* maximum # of trials to find a victim segment for SSR and GC */
822 unsigned int max_victim_search;
825 * for stat information.
826 * one is for the LFS mode, and the other is for the SSR mode.
828 #ifdef CONFIG_F2FS_STAT_FS
829 struct f2fs_stat_info *stat_info; /* FS status information */
830 unsigned int segment_count[2]; /* # of allocated segments */
831 unsigned int block_count[2]; /* # of allocated blocks */
832 atomic_t inplace_count; /* # of inplace update */
833 atomic64_t total_hit_ext; /* # of lookup extent cache */
834 atomic64_t read_hit_rbtree; /* # of hit rbtree extent node */
835 atomic64_t read_hit_largest; /* # of hit largest extent node */
836 atomic64_t read_hit_cached; /* # of hit cached extent node */
837 atomic_t inline_xattr; /* # of inline_xattr inodes */
838 atomic_t inline_inode; /* # of inline_data inodes */
839 atomic_t inline_dir; /* # of inline_dentry inodes */
840 int bg_gc; /* background gc calls */
841 unsigned int ndirty_inode[NR_INODE_TYPE]; /* # of dirty inodes */
843 unsigned int last_victim[2]; /* last victim segment # */
844 spinlock_t stat_lock; /* lock for stat operations */
846 /* For sysfs suppport */
847 struct kobject s_kobj;
848 struct completion s_kobj_unregister;
850 /* For shrinker support */
851 struct list_head s_list;
852 struct mutex umount_mutex;
853 unsigned int shrinker_run_no;
855 /* For write statistics */
856 u64 sectors_written_start;
860 /* For write statistics. Suppose sector size is 512 bytes,
861 * and the return value is in kbytes. s is of struct f2fs_sb_info.
863 #define BD_PART_WRITTEN(s) \
864 (((u64)part_stat_read(s->sb->s_bdev->bd_part, sectors[1]) - \
865 s->sectors_written_start) >> 1)
867 static inline void f2fs_update_time(struct f2fs_sb_info *sbi, int type)
869 sbi->last_time[type] = jiffies;
872 static inline bool f2fs_time_over(struct f2fs_sb_info *sbi, int type)
874 struct timespec ts = {sbi->interval_time[type], 0};
875 unsigned long interval = timespec_to_jiffies(&ts);
877 return time_after(jiffies, sbi->last_time[type] + interval);
880 static inline bool is_idle(struct f2fs_sb_info *sbi)
882 struct block_device *bdev = sbi->sb->s_bdev;
883 struct request_queue *q = bdev_get_queue(bdev);
884 struct request_list *rl = &q->root_rl;
886 if (rl->count[BLK_RW_SYNC] || rl->count[BLK_RW_ASYNC])
889 return f2fs_time_over(sbi, REQ_TIME);
895 static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
897 return container_of(inode, struct f2fs_inode_info, vfs_inode);
900 static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
902 return sb->s_fs_info;
905 static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
907 return F2FS_SB(inode->i_sb);
910 static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
912 return F2FS_I_SB(mapping->host);
915 static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
917 return F2FS_M_SB(page->mapping);
920 static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
922 return (struct f2fs_super_block *)(sbi->raw_super);
925 static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
927 return (struct f2fs_checkpoint *)(sbi->ckpt);
930 static inline struct f2fs_node *F2FS_NODE(struct page *page)
932 return (struct f2fs_node *)page_address(page);
935 static inline struct f2fs_inode *F2FS_INODE(struct page *page)
937 return &((struct f2fs_node *)page_address(page))->i;
940 static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
942 return (struct f2fs_nm_info *)(sbi->nm_info);
945 static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
947 return (struct f2fs_sm_info *)(sbi->sm_info);
950 static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
952 return (struct sit_info *)(SM_I(sbi)->sit_info);
955 static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
957 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
960 static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
962 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
965 static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
967 return sbi->meta_inode->i_mapping;
970 static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
972 return sbi->node_inode->i_mapping;
975 static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
977 return sbi->s_flag & (0x01 << type);
980 static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
982 sbi->s_flag |= (0x01 << type);
985 static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
987 sbi->s_flag &= ~(0x01 << type);
990 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
992 return le64_to_cpu(cp->checkpoint_ver);
995 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
997 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
998 return ckpt_flags & f;
1001 static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1003 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1005 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1008 static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1010 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1012 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1015 static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
1017 down_read(&sbi->cp_rwsem);
1020 static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
1022 up_read(&sbi->cp_rwsem);
1025 static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
1027 down_write(&sbi->cp_rwsem);
1030 static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
1032 up_write(&sbi->cp_rwsem);
1035 static inline int __get_cp_reason(struct f2fs_sb_info *sbi)
1037 int reason = CP_SYNC;
1039 if (test_opt(sbi, FASTBOOT))
1040 reason = CP_FASTBOOT;
1041 if (is_sbi_flag_set(sbi, SBI_IS_CLOSE))
1046 static inline bool __remain_node_summaries(int reason)
1048 return (reason == CP_UMOUNT || reason == CP_FASTBOOT);
1051 static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
1053 return (is_set_ckpt_flags(F2FS_CKPT(sbi), CP_UMOUNT_FLAG) ||
1054 is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FASTBOOT_FLAG));
1058 * Check whether the given nid is within node id range.
1060 static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
1062 if (unlikely(nid < F2FS_ROOT_INO(sbi)))
1064 if (unlikely(nid >= NM_I(sbi)->max_nid))
1069 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
1072 * Check whether the inode has blocks or not
1074 static inline int F2FS_HAS_BLOCKS(struct inode *inode)
1076 if (F2FS_I(inode)->i_xattr_nid)
1077 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1;
1079 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS;
1082 static inline bool f2fs_has_xattr_block(unsigned int ofs)
1084 return ofs == XATTR_NODE_OFFSET;
1087 static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
1088 struct inode *inode, blkcnt_t count)
1090 block_t valid_block_count;
1092 spin_lock(&sbi->stat_lock);
1094 sbi->total_valid_block_count + (block_t)count;
1095 if (unlikely(valid_block_count > sbi->user_block_count)) {
1096 spin_unlock(&sbi->stat_lock);
1099 inode->i_blocks += count;
1100 sbi->total_valid_block_count = valid_block_count;
1101 sbi->alloc_valid_block_count += (block_t)count;
1102 spin_unlock(&sbi->stat_lock);
1106 static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
1107 struct inode *inode,
1110 spin_lock(&sbi->stat_lock);
1111 f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
1112 f2fs_bug_on(sbi, inode->i_blocks < count);
1113 inode->i_blocks -= count;
1114 sbi->total_valid_block_count -= (block_t)count;
1115 spin_unlock(&sbi->stat_lock);
1118 static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
1120 atomic_inc(&sbi->nr_pages[count_type]);
1121 set_sbi_flag(sbi, SBI_IS_DIRTY);
1124 static inline void inode_inc_dirty_pages(struct inode *inode)
1126 atomic_inc(&F2FS_I(inode)->dirty_pages);
1127 inc_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
1128 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
1131 static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
1133 atomic_dec(&sbi->nr_pages[count_type]);
1136 static inline void inode_dec_dirty_pages(struct inode *inode)
1138 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
1139 !S_ISLNK(inode->i_mode))
1142 atomic_dec(&F2FS_I(inode)->dirty_pages);
1143 dec_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
1144 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
1147 static inline int get_pages(struct f2fs_sb_info *sbi, int count_type)
1149 return atomic_read(&sbi->nr_pages[count_type]);
1152 static inline int get_dirty_pages(struct inode *inode)
1154 return atomic_read(&F2FS_I(inode)->dirty_pages);
1157 static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
1159 unsigned int pages_per_sec = sbi->segs_per_sec * sbi->blocks_per_seg;
1160 return ((get_pages(sbi, block_type) + pages_per_sec - 1)
1161 >> sbi->log_blocks_per_seg) / sbi->segs_per_sec;
1164 static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
1166 return sbi->total_valid_block_count;
1169 static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
1171 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1173 /* return NAT or SIT bitmap */
1174 if (flag == NAT_BITMAP)
1175 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
1176 else if (flag == SIT_BITMAP)
1177 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
1182 static inline block_t __cp_payload(struct f2fs_sb_info *sbi)
1184 return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
1187 static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
1189 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1192 if (__cp_payload(sbi) > 0) {
1193 if (flag == NAT_BITMAP)
1194 return &ckpt->sit_nat_version_bitmap;
1196 return (unsigned char *)ckpt + F2FS_BLKSIZE;
1198 offset = (flag == NAT_BITMAP) ?
1199 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
1200 return &ckpt->sit_nat_version_bitmap + offset;
1204 static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
1207 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1208 unsigned long long ckpt_version = cur_cp_version(ckpt);
1210 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
1213 * odd numbered checkpoint should at cp segment 0
1214 * and even segment must be at cp segment 1
1216 if (!(ckpt_version & 1))
1217 start_addr += sbi->blocks_per_seg;
1222 static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
1224 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
1227 static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
1228 struct inode *inode)
1230 block_t valid_block_count;
1231 unsigned int valid_node_count;
1233 spin_lock(&sbi->stat_lock);
1235 valid_block_count = sbi->total_valid_block_count + 1;
1236 if (unlikely(valid_block_count > sbi->user_block_count)) {
1237 spin_unlock(&sbi->stat_lock);
1241 valid_node_count = sbi->total_valid_node_count + 1;
1242 if (unlikely(valid_node_count > sbi->total_node_count)) {
1243 spin_unlock(&sbi->stat_lock);
1250 sbi->alloc_valid_block_count++;
1251 sbi->total_valid_node_count++;
1252 sbi->total_valid_block_count++;
1253 spin_unlock(&sbi->stat_lock);
1258 static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
1259 struct inode *inode)
1261 spin_lock(&sbi->stat_lock);
1263 f2fs_bug_on(sbi, !sbi->total_valid_block_count);
1264 f2fs_bug_on(sbi, !sbi->total_valid_node_count);
1265 f2fs_bug_on(sbi, !inode->i_blocks);
1268 sbi->total_valid_node_count--;
1269 sbi->total_valid_block_count--;
1271 spin_unlock(&sbi->stat_lock);
1274 static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
1276 return sbi->total_valid_node_count;
1279 static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
1281 spin_lock(&sbi->stat_lock);
1282 f2fs_bug_on(sbi, sbi->total_valid_inode_count == sbi->total_node_count);
1283 sbi->total_valid_inode_count++;
1284 spin_unlock(&sbi->stat_lock);
1287 static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
1289 spin_lock(&sbi->stat_lock);
1290 f2fs_bug_on(sbi, !sbi->total_valid_inode_count);
1291 sbi->total_valid_inode_count--;
1292 spin_unlock(&sbi->stat_lock);
1295 static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi)
1297 return sbi->total_valid_inode_count;
1300 static inline struct page *f2fs_grab_cache_page(struct address_space *mapping,
1301 pgoff_t index, bool for_write)
1304 return grab_cache_page(mapping, index);
1305 return grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS);
1308 static inline void f2fs_copy_page(struct page *src, struct page *dst)
1310 char *src_kaddr = kmap(src);
1311 char *dst_kaddr = kmap(dst);
1313 memcpy(dst_kaddr, src_kaddr, PAGE_SIZE);
1318 static inline void f2fs_put_page(struct page *page, int unlock)
1324 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
1327 page_cache_release(page);
1330 static inline void f2fs_put_dnode(struct dnode_of_data *dn)
1333 f2fs_put_page(dn->node_page, 1);
1334 if (dn->inode_page && dn->node_page != dn->inode_page)
1335 f2fs_put_page(dn->inode_page, 0);
1336 dn->node_page = NULL;
1337 dn->inode_page = NULL;
1340 static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
1343 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
1346 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
1351 entry = kmem_cache_alloc(cachep, flags);
1353 entry = kmem_cache_alloc(cachep, flags | __GFP_NOFAIL);
1357 static inline struct bio *f2fs_bio_alloc(int npages)
1361 /* No failure on bio allocation */
1362 bio = bio_alloc(GFP_NOIO, npages);
1364 bio = bio_alloc(GFP_NOIO | __GFP_NOFAIL, npages);
1368 static inline void f2fs_radix_tree_insert(struct radix_tree_root *root,
1369 unsigned long index, void *item)
1371 while (radix_tree_insert(root, index, item))
1375 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1377 static inline bool IS_INODE(struct page *page)
1379 struct f2fs_node *p = F2FS_NODE(page);
1380 return RAW_IS_INODE(p);
1383 static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
1385 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
1388 static inline block_t datablock_addr(struct page *node_page,
1389 unsigned int offset)
1391 struct f2fs_node *raw_node;
1393 raw_node = F2FS_NODE(node_page);
1394 addr_array = blkaddr_in_node(raw_node);
1395 return le32_to_cpu(addr_array[offset]);
1398 static inline int f2fs_test_bit(unsigned int nr, char *addr)
1403 mask = 1 << (7 - (nr & 0x07));
1404 return mask & *addr;
1407 static inline void f2fs_set_bit(unsigned int nr, char *addr)
1412 mask = 1 << (7 - (nr & 0x07));
1416 static inline void f2fs_clear_bit(unsigned int nr, char *addr)
1421 mask = 1 << (7 - (nr & 0x07));
1425 static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
1431 mask = 1 << (7 - (nr & 0x07));
1437 static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
1443 mask = 1 << (7 - (nr & 0x07));
1449 static inline void f2fs_change_bit(unsigned int nr, char *addr)
1454 mask = 1 << (7 - (nr & 0x07));
1458 /* used for f2fs_inode_info->flags */
1460 FI_NEW_INODE, /* indicate newly allocated inode */
1461 FI_DIRTY_INODE, /* indicate inode is dirty or not */
1462 FI_DIRTY_DIR, /* indicate directory has dirty pages */
1463 FI_INC_LINK, /* need to increment i_nlink */
1464 FI_ACL_MODE, /* indicate acl mode */
1465 FI_NO_ALLOC, /* should not allocate any blocks */
1466 FI_FREE_NID, /* free allocated nide */
1467 FI_UPDATE_DIR, /* should update inode block for consistency */
1468 FI_DELAY_IPUT, /* used for the recovery */
1469 FI_NO_EXTENT, /* not to use the extent cache */
1470 FI_INLINE_XATTR, /* used for inline xattr */
1471 FI_INLINE_DATA, /* used for inline data*/
1472 FI_INLINE_DENTRY, /* used for inline dentry */
1473 FI_APPEND_WRITE, /* inode has appended data */
1474 FI_UPDATE_WRITE, /* inode has in-place-update data */
1475 FI_NEED_IPU, /* used for ipu per file */
1476 FI_ATOMIC_FILE, /* indicate atomic file */
1477 FI_VOLATILE_FILE, /* indicate volatile file */
1478 FI_FIRST_BLOCK_WRITTEN, /* indicate #0 data block was written */
1479 FI_DROP_CACHE, /* drop dirty page cache */
1480 FI_DATA_EXIST, /* indicate data exists */
1481 FI_INLINE_DOTS, /* indicate inline dot dentries */
1482 FI_DO_DEFRAG, /* indicate defragment is running */
1483 FI_DIRTY_FILE, /* indicate regular/symlink has dirty pages */
1486 static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag)
1488 if (!test_bit(flag, &fi->flags))
1489 set_bit(flag, &fi->flags);
1492 static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag)
1494 return test_bit(flag, &fi->flags);
1497 static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag)
1499 if (test_bit(flag, &fi->flags))
1500 clear_bit(flag, &fi->flags);
1503 static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode)
1505 fi->i_acl_mode = mode;
1506 set_inode_flag(fi, FI_ACL_MODE);
1509 static inline void get_inline_info(struct f2fs_inode_info *fi,
1510 struct f2fs_inode *ri)
1512 if (ri->i_inline & F2FS_INLINE_XATTR)
1513 set_inode_flag(fi, FI_INLINE_XATTR);
1514 if (ri->i_inline & F2FS_INLINE_DATA)
1515 set_inode_flag(fi, FI_INLINE_DATA);
1516 if (ri->i_inline & F2FS_INLINE_DENTRY)
1517 set_inode_flag(fi, FI_INLINE_DENTRY);
1518 if (ri->i_inline & F2FS_DATA_EXIST)
1519 set_inode_flag(fi, FI_DATA_EXIST);
1520 if (ri->i_inline & F2FS_INLINE_DOTS)
1521 set_inode_flag(fi, FI_INLINE_DOTS);
1524 static inline void set_raw_inline(struct f2fs_inode_info *fi,
1525 struct f2fs_inode *ri)
1529 if (is_inode_flag_set(fi, FI_INLINE_XATTR))
1530 ri->i_inline |= F2FS_INLINE_XATTR;
1531 if (is_inode_flag_set(fi, FI_INLINE_DATA))
1532 ri->i_inline |= F2FS_INLINE_DATA;
1533 if (is_inode_flag_set(fi, FI_INLINE_DENTRY))
1534 ri->i_inline |= F2FS_INLINE_DENTRY;
1535 if (is_inode_flag_set(fi, FI_DATA_EXIST))
1536 ri->i_inline |= F2FS_DATA_EXIST;
1537 if (is_inode_flag_set(fi, FI_INLINE_DOTS))
1538 ri->i_inline |= F2FS_INLINE_DOTS;
1541 static inline int f2fs_has_inline_xattr(struct inode *inode)
1543 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR);
1546 static inline unsigned int addrs_per_inode(struct inode *inode)
1548 if (f2fs_has_inline_xattr(inode))
1549 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
1550 return DEF_ADDRS_PER_INODE;
1553 static inline void *inline_xattr_addr(struct page *page)
1555 struct f2fs_inode *ri = F2FS_INODE(page);
1556 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
1557 F2FS_INLINE_XATTR_ADDRS]);
1560 static inline int inline_xattr_size(struct inode *inode)
1562 if (f2fs_has_inline_xattr(inode))
1563 return F2FS_INLINE_XATTR_ADDRS << 2;
1568 static inline int f2fs_has_inline_data(struct inode *inode)
1570 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA);
1573 static inline void f2fs_clear_inline_inode(struct inode *inode)
1575 clear_inode_flag(F2FS_I(inode), FI_INLINE_DATA);
1576 clear_inode_flag(F2FS_I(inode), FI_DATA_EXIST);
1579 static inline int f2fs_exist_data(struct inode *inode)
1581 return is_inode_flag_set(F2FS_I(inode), FI_DATA_EXIST);
1584 static inline int f2fs_has_inline_dots(struct inode *inode)
1586 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DOTS);
1589 static inline bool f2fs_is_atomic_file(struct inode *inode)
1591 return is_inode_flag_set(F2FS_I(inode), FI_ATOMIC_FILE);
1594 static inline bool f2fs_is_volatile_file(struct inode *inode)
1596 return is_inode_flag_set(F2FS_I(inode), FI_VOLATILE_FILE);
1599 static inline bool f2fs_is_first_block_written(struct inode *inode)
1601 return is_inode_flag_set(F2FS_I(inode), FI_FIRST_BLOCK_WRITTEN);
1604 static inline bool f2fs_is_drop_cache(struct inode *inode)
1606 return is_inode_flag_set(F2FS_I(inode), FI_DROP_CACHE);
1609 static inline void *inline_data_addr(struct page *page)
1611 struct f2fs_inode *ri = F2FS_INODE(page);
1612 return (void *)&(ri->i_addr[1]);
1615 static inline int f2fs_has_inline_dentry(struct inode *inode)
1617 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DENTRY);
1620 static inline void f2fs_dentry_kunmap(struct inode *dir, struct page *page)
1622 if (!f2fs_has_inline_dentry(dir))
1626 static inline int is_file(struct inode *inode, int type)
1628 return F2FS_I(inode)->i_advise & type;
1631 static inline void set_file(struct inode *inode, int type)
1633 F2FS_I(inode)->i_advise |= type;
1636 static inline void clear_file(struct inode *inode, int type)
1638 F2FS_I(inode)->i_advise &= ~type;
1641 static inline int f2fs_readonly(struct super_block *sb)
1643 return sb->s_flags & MS_RDONLY;
1646 static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
1648 return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1651 static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi)
1653 set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1654 sbi->sb->s_flags |= MS_RDONLY;
1657 static inline bool is_dot_dotdot(const struct qstr *str)
1659 if (str->len == 1 && str->name[0] == '.')
1662 if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.')
1668 static inline bool f2fs_may_extent_tree(struct inode *inode)
1670 if (!test_opt(F2FS_I_SB(inode), EXTENT_CACHE) ||
1671 is_inode_flag_set(F2FS_I(inode), FI_NO_EXTENT))
1674 return S_ISREG(inode->i_mode);
1677 static inline void *f2fs_kvmalloc(size_t size, gfp_t flags)
1681 ret = kmalloc(size, flags | __GFP_NOWARN);
1683 ret = __vmalloc(size, flags, PAGE_KERNEL);
1687 static inline void *f2fs_kvzalloc(size_t size, gfp_t flags)
1691 ret = kzalloc(size, flags | __GFP_NOWARN);
1693 ret = __vmalloc(size, flags | __GFP_ZERO, PAGE_KERNEL);
1697 #define get_inode_mode(i) \
1698 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1699 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1701 /* get offset of first page in next direct node */
1702 #define PGOFS_OF_NEXT_DNODE(pgofs, inode) \
1703 ((pgofs < ADDRS_PER_INODE(inode)) ? ADDRS_PER_INODE(inode) : \
1704 (pgofs - ADDRS_PER_INODE(inode) + ADDRS_PER_BLOCK) / \
1705 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(inode))
1710 int f2fs_sync_file(struct file *, loff_t, loff_t, int);
1711 void truncate_data_blocks(struct dnode_of_data *);
1712 int truncate_blocks(struct inode *, u64, bool);
1713 int f2fs_truncate(struct inode *, bool);
1714 int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
1715 int f2fs_setattr(struct dentry *, struct iattr *);
1716 int truncate_hole(struct inode *, pgoff_t, pgoff_t);
1717 int truncate_data_blocks_range(struct dnode_of_data *, int);
1718 long f2fs_ioctl(struct file *, unsigned int, unsigned long);
1719 long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long);
1724 void f2fs_set_inode_flags(struct inode *);
1725 struct inode *f2fs_iget(struct super_block *, unsigned long);
1726 int try_to_free_nats(struct f2fs_sb_info *, int);
1727 int update_inode(struct inode *, struct page *);
1728 int update_inode_page(struct inode *);
1729 int f2fs_write_inode(struct inode *, struct writeback_control *);
1730 void f2fs_evict_inode(struct inode *);
1731 void handle_failed_inode(struct inode *);
1736 struct dentry *f2fs_get_parent(struct dentry *child);
1741 extern unsigned char f2fs_filetype_table[F2FS_FT_MAX];
1742 void set_de_type(struct f2fs_dir_entry *, umode_t);
1744 struct f2fs_dir_entry *find_target_dentry(struct f2fs_filename *,
1745 f2fs_hash_t, int *, struct f2fs_dentry_ptr *);
1746 bool f2fs_fill_dentries(struct dir_context *, struct f2fs_dentry_ptr *,
1747 unsigned int, struct f2fs_str *);
1748 void do_make_empty_dir(struct inode *, struct inode *,
1749 struct f2fs_dentry_ptr *);
1750 struct page *init_inode_metadata(struct inode *, struct inode *,
1751 const struct qstr *, struct page *);
1752 void update_parent_metadata(struct inode *, struct inode *, unsigned int);
1753 int room_for_filename(const void *, int, int);
1754 void f2fs_drop_nlink(struct inode *, struct inode *, struct page *);
1755 struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *,
1757 struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
1758 ino_t f2fs_inode_by_name(struct inode *, struct qstr *);
1759 void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
1760 struct page *, struct inode *);
1761 int update_dent_inode(struct inode *, struct inode *, const struct qstr *);
1762 void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *,
1763 const struct qstr *, f2fs_hash_t , unsigned int);
1764 int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *, nid_t,
1766 void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *,
1768 int f2fs_do_tmpfile(struct inode *, struct inode *);
1769 bool f2fs_empty_dir(struct inode *);
1771 static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
1773 return __f2fs_add_link(d_inode(dentry->d_parent), &dentry->d_name,
1774 inode, inode->i_ino, inode->i_mode);
1780 int f2fs_commit_super(struct f2fs_sb_info *, bool);
1781 int f2fs_sync_fs(struct super_block *, int);
1782 extern __printf(3, 4)
1783 void f2fs_msg(struct super_block *, const char *, const char *, ...);
1784 int sanity_check_ckpt(struct f2fs_sb_info *sbi);
1789 f2fs_hash_t f2fs_dentry_hash(const struct qstr *);
1794 struct dnode_of_data;
1797 bool available_free_memory(struct f2fs_sb_info *, int);
1798 int need_dentry_mark(struct f2fs_sb_info *, nid_t);
1799 bool is_checkpointed_node(struct f2fs_sb_info *, nid_t);
1800 bool need_inode_block_update(struct f2fs_sb_info *, nid_t);
1801 void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
1802 pgoff_t get_next_page_offset(struct dnode_of_data *, pgoff_t);
1803 int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);
1804 int truncate_inode_blocks(struct inode *, pgoff_t);
1805 int truncate_xattr_node(struct inode *, struct page *);
1806 int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t);
1807 int remove_inode_page(struct inode *);
1808 struct page *new_inode_page(struct inode *);
1809 struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *);
1810 void ra_node_page(struct f2fs_sb_info *, nid_t);
1811 struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
1812 struct page *get_node_page_ra(struct page *, int);
1813 void sync_inode_page(struct dnode_of_data *);
1814 int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *);
1815 bool alloc_nid(struct f2fs_sb_info *, nid_t *);
1816 void alloc_nid_done(struct f2fs_sb_info *, nid_t);
1817 void alloc_nid_failed(struct f2fs_sb_info *, nid_t);
1818 int try_to_free_nids(struct f2fs_sb_info *, int);
1819 void recover_inline_xattr(struct inode *, struct page *);
1820 void recover_xattr_data(struct inode *, struct page *, block_t);
1821 int recover_inode_page(struct f2fs_sb_info *, struct page *);
1822 int restore_node_summary(struct f2fs_sb_info *, unsigned int,
1823 struct f2fs_summary_block *);
1824 void flush_nat_entries(struct f2fs_sb_info *);
1825 int build_node_manager(struct f2fs_sb_info *);
1826 void destroy_node_manager(struct f2fs_sb_info *);
1827 int __init create_node_manager_caches(void);
1828 void destroy_node_manager_caches(void);
1833 void register_inmem_page(struct inode *, struct page *);
1834 void drop_inmem_pages(struct inode *);
1835 int commit_inmem_pages(struct inode *);
1836 void f2fs_balance_fs(struct f2fs_sb_info *, bool);
1837 void f2fs_balance_fs_bg(struct f2fs_sb_info *);
1838 int f2fs_issue_flush(struct f2fs_sb_info *);
1839 int create_flush_cmd_control(struct f2fs_sb_info *);
1840 void destroy_flush_cmd_control(struct f2fs_sb_info *);
1841 void invalidate_blocks(struct f2fs_sb_info *, block_t);
1842 bool is_checkpointed_data(struct f2fs_sb_info *, block_t);
1843 void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t);
1844 void clear_prefree_segments(struct f2fs_sb_info *, struct cp_control *);
1845 void release_discard_addrs(struct f2fs_sb_info *);
1846 bool discard_next_dnode(struct f2fs_sb_info *, block_t);
1847 int npages_for_summary_flush(struct f2fs_sb_info *, bool);
1848 void allocate_new_segments(struct f2fs_sb_info *);
1849 int f2fs_trim_fs(struct f2fs_sb_info *, struct fstrim_range *);
1850 struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
1851 void update_meta_page(struct f2fs_sb_info *, void *, block_t);
1852 void write_meta_page(struct f2fs_sb_info *, struct page *);
1853 void write_node_page(unsigned int, struct f2fs_io_info *);
1854 void write_data_page(struct dnode_of_data *, struct f2fs_io_info *);
1855 void rewrite_data_page(struct f2fs_io_info *);
1856 void __f2fs_replace_block(struct f2fs_sb_info *, struct f2fs_summary *,
1857 block_t, block_t, bool, bool);
1858 void f2fs_replace_block(struct f2fs_sb_info *, struct dnode_of_data *,
1859 block_t, block_t, unsigned char, bool, bool);
1860 void allocate_data_block(struct f2fs_sb_info *, struct page *,
1861 block_t, block_t *, struct f2fs_summary *, int);
1862 void f2fs_wait_on_page_writeback(struct page *, enum page_type, bool);
1863 void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info *, block_t);
1864 void write_data_summaries(struct f2fs_sb_info *, block_t);
1865 void write_node_summaries(struct f2fs_sb_info *, block_t);
1866 int lookup_journal_in_cursum(struct f2fs_journal *, int, unsigned int, int);
1867 void flush_sit_entries(struct f2fs_sb_info *, struct cp_control *);
1868 int build_segment_manager(struct f2fs_sb_info *);
1869 void destroy_segment_manager(struct f2fs_sb_info *);
1870 int __init create_segment_manager_caches(void);
1871 void destroy_segment_manager_caches(void);
1876 struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
1877 struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
1878 struct page *get_tmp_page(struct f2fs_sb_info *, pgoff_t);
1879 bool is_valid_blkaddr(struct f2fs_sb_info *, block_t, int);
1880 int ra_meta_pages(struct f2fs_sb_info *, block_t, int, int, bool);
1881 void ra_meta_pages_cond(struct f2fs_sb_info *, pgoff_t);
1882 long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
1883 void add_ino_entry(struct f2fs_sb_info *, nid_t, int type);
1884 void remove_ino_entry(struct f2fs_sb_info *, nid_t, int type);
1885 void release_ino_entry(struct f2fs_sb_info *);
1886 bool exist_written_data(struct f2fs_sb_info *, nid_t, int);
1887 int acquire_orphan_inode(struct f2fs_sb_info *);
1888 void release_orphan_inode(struct f2fs_sb_info *);
1889 void add_orphan_inode(struct f2fs_sb_info *, nid_t);
1890 void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
1891 int recover_orphan_inodes(struct f2fs_sb_info *);
1892 int get_valid_checkpoint(struct f2fs_sb_info *);
1893 void update_dirty_page(struct inode *, struct page *);
1894 void add_dirty_dir_inode(struct inode *);
1895 void remove_dirty_inode(struct inode *);
1896 int sync_dirty_inodes(struct f2fs_sb_info *, enum inode_type);
1897 int write_checkpoint(struct f2fs_sb_info *, struct cp_control *);
1898 void init_ino_entry_info(struct f2fs_sb_info *);
1899 int __init create_checkpoint_caches(void);
1900 void destroy_checkpoint_caches(void);
1905 void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int);
1906 void f2fs_submit_merged_bio_cond(struct f2fs_sb_info *, struct inode *,
1907 struct page *, nid_t, enum page_type, int);
1908 void f2fs_flush_merged_bios(struct f2fs_sb_info *);
1909 int f2fs_submit_page_bio(struct f2fs_io_info *);
1910 void f2fs_submit_page_mbio(struct f2fs_io_info *);
1911 void set_data_blkaddr(struct dnode_of_data *);
1912 void f2fs_update_data_blkaddr(struct dnode_of_data *, block_t);
1913 int reserve_new_block(struct dnode_of_data *);
1914 int f2fs_get_block(struct dnode_of_data *, pgoff_t);
1915 ssize_t f2fs_preallocate_blocks(struct kiocb *, struct iov_iter *);
1916 int f2fs_reserve_block(struct dnode_of_data *, pgoff_t);
1917 struct page *get_read_data_page(struct inode *, pgoff_t, int, bool);
1918 struct page *find_data_page(struct inode *, pgoff_t);
1919 struct page *get_lock_data_page(struct inode *, pgoff_t, bool);
1920 struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
1921 int do_write_data_page(struct f2fs_io_info *);
1922 int f2fs_map_blocks(struct inode *, struct f2fs_map_blocks *, int, int);
1923 int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64);
1924 void f2fs_invalidate_page(struct page *, unsigned int, unsigned int);
1925 int f2fs_release_page(struct page *, gfp_t);
1930 int start_gc_thread(struct f2fs_sb_info *);
1931 void stop_gc_thread(struct f2fs_sb_info *);
1932 block_t start_bidx_of_node(unsigned int, struct inode *);
1933 int f2fs_gc(struct f2fs_sb_info *, bool);
1934 void build_gc_manager(struct f2fs_sb_info *);
1939 int recover_fsync_data(struct f2fs_sb_info *);
1940 bool space_for_roll_forward(struct f2fs_sb_info *);
1945 #ifdef CONFIG_F2FS_STAT_FS
1946 struct f2fs_stat_info {
1947 struct list_head stat_list;
1948 struct f2fs_sb_info *sbi;
1949 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
1950 int main_area_segs, main_area_sections, main_area_zones;
1951 unsigned long long hit_largest, hit_cached, hit_rbtree;
1952 unsigned long long hit_total, total_ext;
1953 int ext_tree, zombie_tree, ext_node;
1954 int ndirty_node, ndirty_meta;
1955 int ndirty_dent, ndirty_dirs, ndirty_data, ndirty_files;
1956 int nats, dirty_nats, sits, dirty_sits, fnids;
1957 int total_count, utilization;
1958 int bg_gc, inmem_pages, wb_pages;
1959 int inline_xattr, inline_inode, inline_dir;
1960 unsigned int valid_count, valid_node_count, valid_inode_count;
1961 unsigned int bimodal, avg_vblocks;
1962 int util_free, util_valid, util_invalid;
1963 int rsvd_segs, overp_segs;
1964 int dirty_count, node_pages, meta_pages;
1965 int prefree_count, call_count, cp_count, bg_cp_count;
1966 int tot_segs, node_segs, data_segs, free_segs, free_secs;
1967 int bg_node_segs, bg_data_segs;
1968 int tot_blks, data_blks, node_blks;
1969 int bg_data_blks, bg_node_blks;
1970 int curseg[NR_CURSEG_TYPE];
1971 int cursec[NR_CURSEG_TYPE];
1972 int curzone[NR_CURSEG_TYPE];
1974 unsigned int segment_count[2];
1975 unsigned int block_count[2];
1976 unsigned int inplace_count;
1977 unsigned long long base_mem, cache_mem, page_mem;
1980 static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
1982 return (struct f2fs_stat_info *)sbi->stat_info;
1985 #define stat_inc_cp_count(si) ((si)->cp_count++)
1986 #define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++)
1987 #define stat_inc_call_count(si) ((si)->call_count++)
1988 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1989 #define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++)
1990 #define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--)
1991 #define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext))
1992 #define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree))
1993 #define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest))
1994 #define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached))
1995 #define stat_inc_inline_xattr(inode) \
1997 if (f2fs_has_inline_xattr(inode)) \
1998 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
2000 #define stat_dec_inline_xattr(inode) \
2002 if (f2fs_has_inline_xattr(inode)) \
2003 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
2005 #define stat_inc_inline_inode(inode) \
2007 if (f2fs_has_inline_data(inode)) \
2008 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
2010 #define stat_dec_inline_inode(inode) \
2012 if (f2fs_has_inline_data(inode)) \
2013 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
2015 #define stat_inc_inline_dir(inode) \
2017 if (f2fs_has_inline_dentry(inode)) \
2018 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
2020 #define stat_dec_inline_dir(inode) \
2022 if (f2fs_has_inline_dentry(inode)) \
2023 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
2025 #define stat_inc_seg_type(sbi, curseg) \
2026 ((sbi)->segment_count[(curseg)->alloc_type]++)
2027 #define stat_inc_block_count(sbi, curseg) \
2028 ((sbi)->block_count[(curseg)->alloc_type]++)
2029 #define stat_inc_inplace_blocks(sbi) \
2030 (atomic_inc(&(sbi)->inplace_count))
2031 #define stat_inc_seg_count(sbi, type, gc_type) \
2033 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2035 if (type == SUM_TYPE_DATA) { \
2037 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
2040 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
2044 #define stat_inc_tot_blk_count(si, blks) \
2045 (si->tot_blks += (blks))
2047 #define stat_inc_data_blk_count(sbi, blks, gc_type) \
2049 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2050 stat_inc_tot_blk_count(si, blks); \
2051 si->data_blks += (blks); \
2052 si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \
2055 #define stat_inc_node_blk_count(sbi, blks, gc_type) \
2057 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2058 stat_inc_tot_blk_count(si, blks); \
2059 si->node_blks += (blks); \
2060 si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \
2063 int f2fs_build_stats(struct f2fs_sb_info *);
2064 void f2fs_destroy_stats(struct f2fs_sb_info *);
2065 int __init f2fs_create_root_stats(void);
2066 void f2fs_destroy_root_stats(void);
2068 #define stat_inc_cp_count(si)
2069 #define stat_inc_bg_cp_count(si)
2070 #define stat_inc_call_count(si)
2071 #define stat_inc_bggc_count(si)
2072 #define stat_inc_dirty_inode(sbi, type)
2073 #define stat_dec_dirty_inode(sbi, type)
2074 #define stat_inc_total_hit(sb)
2075 #define stat_inc_rbtree_node_hit(sb)
2076 #define stat_inc_largest_node_hit(sbi)
2077 #define stat_inc_cached_node_hit(sbi)
2078 #define stat_inc_inline_xattr(inode)
2079 #define stat_dec_inline_xattr(inode)
2080 #define stat_inc_inline_inode(inode)
2081 #define stat_dec_inline_inode(inode)
2082 #define stat_inc_inline_dir(inode)
2083 #define stat_dec_inline_dir(inode)
2084 #define stat_inc_seg_type(sbi, curseg)
2085 #define stat_inc_block_count(sbi, curseg)
2086 #define stat_inc_inplace_blocks(sbi)
2087 #define stat_inc_seg_count(sbi, type, gc_type)
2088 #define stat_inc_tot_blk_count(si, blks)
2089 #define stat_inc_data_blk_count(sbi, blks, gc_type)
2090 #define stat_inc_node_blk_count(sbi, blks, gc_type)
2092 static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
2093 static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
2094 static inline int __init f2fs_create_root_stats(void) { return 0; }
2095 static inline void f2fs_destroy_root_stats(void) { }
2098 extern const struct file_operations f2fs_dir_operations;
2099 extern const struct file_operations f2fs_file_operations;
2100 extern const struct inode_operations f2fs_file_inode_operations;
2101 extern const struct address_space_operations f2fs_dblock_aops;
2102 extern const struct address_space_operations f2fs_node_aops;
2103 extern const struct address_space_operations f2fs_meta_aops;
2104 extern const struct inode_operations f2fs_dir_inode_operations;
2105 extern const struct inode_operations f2fs_symlink_inode_operations;
2106 extern const struct inode_operations f2fs_encrypted_symlink_inode_operations;
2107 extern const struct inode_operations f2fs_special_inode_operations;
2108 extern struct kmem_cache *inode_entry_slab;
2113 bool f2fs_may_inline_data(struct inode *);
2114 bool f2fs_may_inline_dentry(struct inode *);
2115 void read_inline_data(struct page *, struct page *);
2116 bool truncate_inline_inode(struct page *, u64);
2117 int f2fs_read_inline_data(struct inode *, struct page *);
2118 int f2fs_convert_inline_page(struct dnode_of_data *, struct page *);
2119 int f2fs_convert_inline_inode(struct inode *);
2120 int f2fs_write_inline_data(struct inode *, struct page *);
2121 bool recover_inline_data(struct inode *, struct page *);
2122 struct f2fs_dir_entry *find_in_inline_dir(struct inode *,
2123 struct f2fs_filename *, struct page **);
2124 struct f2fs_dir_entry *f2fs_parent_inline_dir(struct inode *, struct page **);
2125 int make_empty_inline_dir(struct inode *inode, struct inode *, struct page *);
2126 int f2fs_add_inline_entry(struct inode *, const struct qstr *, struct inode *,
2128 void f2fs_delete_inline_entry(struct f2fs_dir_entry *, struct page *,
2129 struct inode *, struct inode *);
2130 bool f2fs_empty_inline_dir(struct inode *);
2131 int f2fs_read_inline_dir(struct file *, struct dir_context *,
2133 int f2fs_inline_data_fiemap(struct inode *,
2134 struct fiemap_extent_info *, __u64, __u64);
2139 unsigned long f2fs_shrink_count(struct shrinker *, struct shrink_control *);
2140 unsigned long f2fs_shrink_scan(struct shrinker *, struct shrink_control *);
2141 void f2fs_join_shrinker(struct f2fs_sb_info *);
2142 void f2fs_leave_shrinker(struct f2fs_sb_info *);
2147 unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *, int);
2148 bool f2fs_init_extent_tree(struct inode *, struct f2fs_extent *);
2149 unsigned int f2fs_destroy_extent_node(struct inode *);
2150 void f2fs_destroy_extent_tree(struct inode *);
2151 bool f2fs_lookup_extent_cache(struct inode *, pgoff_t, struct extent_info *);
2152 void f2fs_update_extent_cache(struct dnode_of_data *);
2153 void f2fs_update_extent_cache_range(struct dnode_of_data *dn,
2154 pgoff_t, block_t, unsigned int);
2155 void init_extent_cache_info(struct f2fs_sb_info *);
2156 int __init create_extent_cache(void);
2157 void destroy_extent_cache(void);
2162 static inline int f2fs_encrypted_inode(struct inode *inode)
2164 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2165 return file_is_encrypt(inode);
2171 static inline void f2fs_set_encrypted_inode(struct inode *inode)
2173 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2174 file_set_encrypt(inode);
2178 static inline bool f2fs_bio_encrypted(struct bio *bio)
2180 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2181 return unlikely(bio->bi_private != NULL);
2187 static inline int f2fs_sb_has_crypto(struct super_block *sb)
2189 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2190 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_ENCRYPT);
2196 static inline bool f2fs_may_encrypt(struct inode *inode)
2198 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2199 umode_t mode = inode->i_mode;
2201 return (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode));
2207 /* crypto_policy.c */
2208 int f2fs_is_child_context_consistent_with_parent(struct inode *,
2210 int f2fs_inherit_context(struct inode *, struct inode *, struct page *);
2211 int f2fs_process_policy(const struct f2fs_encryption_policy *, struct inode *);
2212 int f2fs_get_policy(struct inode *, struct f2fs_encryption_policy *);
2215 extern struct kmem_cache *f2fs_crypt_info_cachep;
2216 bool f2fs_valid_contents_enc_mode(uint32_t);
2217 uint32_t f2fs_validate_encryption_key_size(uint32_t, uint32_t);
2218 struct f2fs_crypto_ctx *f2fs_get_crypto_ctx(struct inode *);
2219 void f2fs_release_crypto_ctx(struct f2fs_crypto_ctx *);
2220 struct page *f2fs_encrypt(struct inode *, struct page *);
2221 int f2fs_decrypt(struct page *);
2222 void f2fs_end_io_crypto_work(struct f2fs_crypto_ctx *, struct bio *);
2225 void f2fs_free_encryption_info(struct inode *, struct f2fs_crypt_info *);
2226 int _f2fs_get_encryption_info(struct inode *inode);
2228 /* crypto_fname.c */
2229 bool f2fs_valid_filenames_enc_mode(uint32_t);
2230 u32 f2fs_fname_crypto_round_up(u32, u32);
2231 unsigned f2fs_fname_encrypted_size(struct inode *, u32);
2232 int f2fs_fname_crypto_alloc_buffer(struct inode *, u32, struct f2fs_str *);
2233 int f2fs_fname_disk_to_usr(struct inode *, f2fs_hash_t *,
2234 const struct f2fs_str *, struct f2fs_str *);
2235 int f2fs_fname_usr_to_disk(struct inode *, const struct qstr *,
2238 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2239 void f2fs_restore_and_release_control_page(struct page **);
2240 void f2fs_restore_control_page(struct page *);
2242 int __init f2fs_init_crypto(void);
2243 int f2fs_crypto_initialize(void);
2244 void f2fs_exit_crypto(void);
2246 int f2fs_has_encryption_key(struct inode *);
2248 static inline int f2fs_get_encryption_info(struct inode *inode)
2250 struct f2fs_crypt_info *ci = F2FS_I(inode)->i_crypt_info;
2253 (ci->ci_keyring_key &&
2254 (ci->ci_keyring_key->flags & ((1 << KEY_FLAG_INVALIDATED) |
2255 (1 << KEY_FLAG_REVOKED) |
2256 (1 << KEY_FLAG_DEAD)))))
2257 return _f2fs_get_encryption_info(inode);
2261 void f2fs_fname_crypto_free_buffer(struct f2fs_str *);
2262 int f2fs_fname_setup_filename(struct inode *, const struct qstr *,
2263 int lookup, struct f2fs_filename *);
2264 void f2fs_fname_free_filename(struct f2fs_filename *);
2266 static inline void f2fs_restore_and_release_control_page(struct page **p) { }
2267 static inline void f2fs_restore_control_page(struct page *p) { }
2269 static inline int __init f2fs_init_crypto(void) { return 0; }
2270 static inline void f2fs_exit_crypto(void) { }
2272 static inline int f2fs_has_encryption_key(struct inode *i) { return 0; }
2273 static inline int f2fs_get_encryption_info(struct inode *i) { return 0; }
2274 static inline void f2fs_fname_crypto_free_buffer(struct f2fs_str *p) { }
2276 static inline int f2fs_fname_setup_filename(struct inode *dir,
2277 const struct qstr *iname,
2278 int lookup, struct f2fs_filename *fname)
2280 memset(fname, 0, sizeof(struct f2fs_filename));
2281 fname->usr_fname = iname;
2282 fname->disk_name.name = (unsigned char *)iname->name;
2283 fname->disk_name.len = iname->len;
2287 static inline void f2fs_fname_free_filename(struct f2fs_filename *fname) { }