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)
127 #define DEF_CP_INTERVAL 60 /* 60 secs */
138 * For CP/NAT/SIT/SSA readahead
148 /* for the list of ino */
150 ORPHAN_INO, /* for orphan ino list */
151 APPEND_INO, /* for append ino list */
152 UPDATE_INO, /* for update ino list */
153 MAX_INO_ENTRY, /* max. list */
157 struct list_head list; /* list head */
158 nid_t ino; /* inode number */
162 * for the list of directory inodes or gc inodes.
163 * NOTE: there are two slab users for this structure, if we add/modify/delete
164 * fields in structure for one of slab users, it may affect fields or size of
165 * other one, in this condition, it's better to split both of slab and related
169 struct list_head list; /* list head */
170 struct inode *inode; /* vfs inode pointer */
173 /* for the list of blockaddresses to be discarded */
174 struct discard_entry {
175 struct list_head list; /* list head */
176 block_t blkaddr; /* block address to be discarded */
177 int len; /* # of consecutive blocks of the discard */
180 /* for the list of fsync inodes, used only during recovery */
181 struct fsync_inode_entry {
182 struct list_head list; /* list head */
183 struct inode *inode; /* vfs inode pointer */
184 block_t blkaddr; /* block address locating the last fsync */
185 block_t last_dentry; /* block address locating the last dentry */
186 block_t last_inode; /* block address locating the last inode */
189 #define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
190 #define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
192 #define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
193 #define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
194 #define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
195 #define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
197 #define MAX_NAT_JENTRIES(sum) (NAT_JOURNAL_ENTRIES - nats_in_cursum(sum))
198 #define MAX_SIT_JENTRIES(sum) (SIT_JOURNAL_ENTRIES - sits_in_cursum(sum))
200 static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i)
202 int before = nats_in_cursum(rs);
203 rs->n_nats = cpu_to_le16(before + i);
207 static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i)
209 int before = sits_in_cursum(rs);
210 rs->n_sits = cpu_to_le16(before + i);
214 static inline bool __has_cursum_space(struct f2fs_summary_block *sum, int size,
217 if (type == NAT_JOURNAL)
218 return size <= MAX_NAT_JENTRIES(sum);
219 return size <= MAX_SIT_JENTRIES(sum);
225 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
226 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
227 #define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
229 #define F2FS_IOCTL_MAGIC 0xf5
230 #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
231 #define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
232 #define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
233 #define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
234 #define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
235 #define F2FS_IOC_GARBAGE_COLLECT _IO(F2FS_IOCTL_MAGIC, 6)
236 #define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7)
238 #define F2FS_IOC_SET_ENCRYPTION_POLICY \
239 _IOR('f', 19, struct f2fs_encryption_policy)
240 #define F2FS_IOC_GET_ENCRYPTION_PWSALT \
241 _IOW('f', 20, __u8[16])
242 #define F2FS_IOC_GET_ENCRYPTION_POLICY \
243 _IOW('f', 21, struct f2fs_encryption_policy)
246 * should be same as XFS_IOC_GOINGDOWN.
247 * Flags for going down operation used by FS_IOC_GOINGDOWN
249 #define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
250 #define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
251 #define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
252 #define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
253 #define F2FS_GOING_DOWN_METAFLUSH 0x3 /* going down with meta flush */
255 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
257 * ioctl commands in 32 bit emulation
259 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
260 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
264 * For INODE and NODE manager
266 /* for directory operations */
272 struct f2fs_filename {
273 const struct qstr *usr_fname;
274 struct f2fs_str disk_name;
276 #ifdef CONFIG_F2FS_FS_ENCRYPTION
277 struct f2fs_str crypto_buf;
281 #define FSTR_INIT(n, l) { .name = n, .len = l }
282 #define FSTR_TO_QSTR(f) QSTR_INIT((f)->name, (f)->len)
283 #define fname_name(p) ((p)->disk_name.name)
284 #define fname_len(p) ((p)->disk_name.len)
286 struct f2fs_dentry_ptr {
289 struct f2fs_dir_entry *dentry;
290 __u8 (*filename)[F2FS_SLOT_LEN];
294 static inline void make_dentry_ptr(struct inode *inode,
295 struct f2fs_dentry_ptr *d, void *src, int type)
300 struct f2fs_dentry_block *t = (struct f2fs_dentry_block *)src;
301 d->max = NR_DENTRY_IN_BLOCK;
302 d->bitmap = &t->dentry_bitmap;
303 d->dentry = t->dentry;
304 d->filename = t->filename;
306 struct f2fs_inline_dentry *t = (struct f2fs_inline_dentry *)src;
307 d->max = NR_INLINE_DENTRY;
308 d->bitmap = &t->dentry_bitmap;
309 d->dentry = t->dentry;
310 d->filename = t->filename;
315 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
316 * as its node offset to distinguish from index node blocks.
317 * But some bits are used to mark the node block.
319 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
322 ALLOC_NODE, /* allocate a new node page if needed */
323 LOOKUP_NODE, /* look up a node without readahead */
325 * look up a node with readahead called
330 #define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */
332 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
334 /* vector size for gang look-up from extent cache that consists of radix tree */
335 #define EXT_TREE_VEC_SIZE 64
337 /* for in-memory extent cache entry */
338 #define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
340 /* number of extent info in extent cache we try to shrink */
341 #define EXTENT_CACHE_SHRINK_NUMBER 128
344 unsigned int fofs; /* start offset in a file */
345 u32 blk; /* start block address of the extent */
346 unsigned int len; /* length of the extent */
350 struct rb_node rb_node; /* rb node located in rb-tree */
351 struct list_head list; /* node in global extent list of sbi */
352 struct extent_info ei; /* extent info */
356 nid_t ino; /* inode number */
357 struct rb_root root; /* root of extent info rb-tree */
358 struct extent_node *cached_en; /* recently accessed extent node */
359 struct extent_info largest; /* largested extent info */
360 rwlock_t lock; /* protect extent info rb-tree */
361 atomic_t refcount; /* reference count of rb-tree */
362 unsigned int count; /* # of extent node in rb-tree*/
366 * This structure is taken from ext4_map_blocks.
368 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
370 #define F2FS_MAP_NEW (1 << BH_New)
371 #define F2FS_MAP_MAPPED (1 << BH_Mapped)
372 #define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten)
373 #define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
376 struct f2fs_map_blocks {
380 unsigned int m_flags;
383 /* for flag in get_data_block */
384 #define F2FS_GET_BLOCK_READ 0
385 #define F2FS_GET_BLOCK_DIO 1
386 #define F2FS_GET_BLOCK_FIEMAP 2
387 #define F2FS_GET_BLOCK_BMAP 3
390 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
392 #define FADVISE_COLD_BIT 0x01
393 #define FADVISE_LOST_PINO_BIT 0x02
394 #define FADVISE_ENCRYPT_BIT 0x04
395 #define FADVISE_ENC_NAME_BIT 0x08
397 #define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
398 #define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
399 #define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
400 #define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
401 #define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
402 #define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
403 #define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
404 #define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
405 #define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
406 #define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
407 #define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
409 /* Encryption algorithms */
410 #define F2FS_ENCRYPTION_MODE_INVALID 0
411 #define F2FS_ENCRYPTION_MODE_AES_256_XTS 1
412 #define F2FS_ENCRYPTION_MODE_AES_256_GCM 2
413 #define F2FS_ENCRYPTION_MODE_AES_256_CBC 3
414 #define F2FS_ENCRYPTION_MODE_AES_256_CTS 4
416 #include "f2fs_crypto.h"
418 #define DEF_DIR_LEVEL 0
420 struct f2fs_inode_info {
421 struct inode vfs_inode; /* serve a vfs inode */
422 unsigned long i_flags; /* keep an inode flags for ioctl */
423 unsigned char i_advise; /* use to give file attribute hints */
424 unsigned char i_dir_level; /* use for dentry level for large dir */
425 unsigned int i_current_depth; /* use only in directory structure */
426 unsigned int i_pino; /* parent inode number */
427 umode_t i_acl_mode; /* keep file acl mode temporarily */
429 /* Use below internally in f2fs*/
430 unsigned long flags; /* use to pass per-file flags */
431 struct rw_semaphore i_sem; /* protect fi info */
432 atomic_t dirty_pages; /* # of dirty pages */
433 f2fs_hash_t chash; /* hash value of given file name */
434 unsigned int clevel; /* maximum level of given file name */
435 nid_t i_xattr_nid; /* node id that contains xattrs */
436 unsigned long long xattr_ver; /* cp version of xattr modification */
437 struct inode_entry *dirty_dir; /* the pointer of dirty dir */
439 struct list_head inmem_pages; /* inmemory pages managed by f2fs */
440 struct mutex inmem_lock; /* lock for inmemory pages */
442 struct extent_tree *extent_tree; /* cached extent_tree entry */
444 #ifdef CONFIG_F2FS_FS_ENCRYPTION
445 /* Encryption params */
446 struct f2fs_crypt_info *i_crypt_info;
450 static inline void get_extent_info(struct extent_info *ext,
451 struct f2fs_extent i_ext)
453 ext->fofs = le32_to_cpu(i_ext.fofs);
454 ext->blk = le32_to_cpu(i_ext.blk);
455 ext->len = le32_to_cpu(i_ext.len);
458 static inline void set_raw_extent(struct extent_info *ext,
459 struct f2fs_extent *i_ext)
461 i_ext->fofs = cpu_to_le32(ext->fofs);
462 i_ext->blk = cpu_to_le32(ext->blk);
463 i_ext->len = cpu_to_le32(ext->len);
466 static inline void set_extent_info(struct extent_info *ei, unsigned int fofs,
467 u32 blk, unsigned int len)
474 static inline bool __is_extent_same(struct extent_info *ei1,
475 struct extent_info *ei2)
477 return (ei1->fofs == ei2->fofs && ei1->blk == ei2->blk &&
478 ei1->len == ei2->len);
481 static inline bool __is_extent_mergeable(struct extent_info *back,
482 struct extent_info *front)
484 return (back->fofs + back->len == front->fofs &&
485 back->blk + back->len == front->blk);
488 static inline bool __is_back_mergeable(struct extent_info *cur,
489 struct extent_info *back)
491 return __is_extent_mergeable(back, cur);
494 static inline bool __is_front_mergeable(struct extent_info *cur,
495 struct extent_info *front)
497 return __is_extent_mergeable(cur, front);
500 static inline void __try_update_largest_extent(struct extent_tree *et,
501 struct extent_node *en)
503 if (en->ei.len > et->largest.len)
504 et->largest = en->ei;
507 struct f2fs_nm_info {
508 block_t nat_blkaddr; /* base disk address of NAT */
509 nid_t max_nid; /* maximum possible node ids */
510 nid_t available_nids; /* maximum available node ids */
511 nid_t next_scan_nid; /* the next nid to be scanned */
512 unsigned int ram_thresh; /* control the memory footprint */
514 /* NAT cache management */
515 struct radix_tree_root nat_root;/* root of the nat entry cache */
516 struct radix_tree_root nat_set_root;/* root of the nat set cache */
517 struct rw_semaphore nat_tree_lock; /* protect nat_tree_lock */
518 struct list_head nat_entries; /* cached nat entry list (clean) */
519 unsigned int nat_cnt; /* the # of cached nat entries */
520 unsigned int dirty_nat_cnt; /* total num of nat entries in set */
522 /* free node ids management */
523 struct radix_tree_root free_nid_root;/* root of the free_nid cache */
524 struct list_head free_nid_list; /* a list for free nids */
525 spinlock_t free_nid_list_lock; /* protect free nid list */
526 unsigned int fcnt; /* the number of free node id */
527 struct mutex build_lock; /* lock for build free nids */
530 char *nat_bitmap; /* NAT bitmap pointer */
531 int bitmap_size; /* bitmap size */
535 * this structure is used as one of function parameters.
536 * all the information are dedicated to a given direct node block determined
537 * by the data offset in a file.
539 struct dnode_of_data {
540 struct inode *inode; /* vfs inode pointer */
541 struct page *inode_page; /* its inode page, NULL is possible */
542 struct page *node_page; /* cached direct node page */
543 nid_t nid; /* node id of the direct node block */
544 unsigned int ofs_in_node; /* data offset in the node page */
545 bool inode_page_locked; /* inode page is locked or not */
546 block_t data_blkaddr; /* block address of the node block */
549 static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
550 struct page *ipage, struct page *npage, nid_t nid)
552 memset(dn, 0, sizeof(*dn));
554 dn->inode_page = ipage;
555 dn->node_page = npage;
562 * By default, there are 6 active log areas across the whole main area.
563 * When considering hot and cold data separation to reduce cleaning overhead,
564 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
566 * In the current design, you should not change the numbers intentionally.
567 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
568 * logs individually according to the underlying devices. (default: 6)
569 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
570 * data and 8 for node logs.
572 #define NR_CURSEG_DATA_TYPE (3)
573 #define NR_CURSEG_NODE_TYPE (3)
574 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
577 CURSEG_HOT_DATA = 0, /* directory entry blocks */
578 CURSEG_WARM_DATA, /* data blocks */
579 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
580 CURSEG_HOT_NODE, /* direct node blocks of directory files */
581 CURSEG_WARM_NODE, /* direct node blocks of normal files */
582 CURSEG_COLD_NODE, /* indirect node blocks */
584 CURSEG_DIRECT_IO, /* to use for the direct IO path */
588 struct completion wait;
589 struct llist_node llnode;
593 struct flush_cmd_control {
594 struct task_struct *f2fs_issue_flush; /* flush thread */
595 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
596 struct llist_head issue_list; /* list for command issue */
597 struct llist_node *dispatch_list; /* list for command dispatch */
600 struct f2fs_sm_info {
601 struct sit_info *sit_info; /* whole segment information */
602 struct free_segmap_info *free_info; /* free segment information */
603 struct dirty_seglist_info *dirty_info; /* dirty segment information */
604 struct curseg_info *curseg_array; /* active segment information */
606 block_t seg0_blkaddr; /* block address of 0'th segment */
607 block_t main_blkaddr; /* start block address of main area */
608 block_t ssa_blkaddr; /* start block address of SSA area */
610 unsigned int segment_count; /* total # of segments */
611 unsigned int main_segments; /* # of segments in main area */
612 unsigned int reserved_segments; /* # of reserved segments */
613 unsigned int ovp_segments; /* # of overprovision segments */
615 /* a threshold to reclaim prefree segments */
616 unsigned int rec_prefree_segments;
618 /* for small discard management */
619 struct list_head discard_list; /* 4KB discard list */
620 int nr_discards; /* # of discards in the list */
621 int max_discards; /* max. discards to be issued */
623 /* for batched trimming */
624 unsigned int trim_sections; /* # of sections to trim */
626 struct list_head sit_entry_set; /* sit entry set list */
628 unsigned int ipu_policy; /* in-place-update policy */
629 unsigned int min_ipu_util; /* in-place-update threshold */
630 unsigned int min_fsync_blocks; /* threshold for fsync */
632 /* for flush command control */
633 struct flush_cmd_control *cmd_control_info;
641 * COUNT_TYPE for monitoring
643 * f2fs monitors the number of several block types such as on-writeback,
644 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
656 * The below are the page types of bios used in submit_bio().
657 * The available types are:
658 * DATA User data pages. It operates as async mode.
659 * NODE Node pages. It operates as async mode.
660 * META FS metadata pages such as SIT, NAT, CP.
661 * NR_PAGE_TYPE The number of page types.
662 * META_FLUSH Make sure the previous pages are written
663 * with waiting the bio's completion
664 * ... Only can be used with META.
666 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
673 INMEM, /* the below types are used by tracepoints only. */
679 struct f2fs_io_info {
680 struct f2fs_sb_info *sbi; /* f2fs_sb_info pointer */
681 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
682 int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
683 block_t blk_addr; /* block address to be written */
684 struct page *page; /* page to be written */
685 struct page *encrypted_page; /* encrypted page */
688 #define is_read_io(rw) (((rw) & 1) == READ)
689 struct f2fs_bio_info {
690 struct f2fs_sb_info *sbi; /* f2fs superblock */
691 struct bio *bio; /* bios to merge */
692 sector_t last_block_in_bio; /* last block number */
693 struct f2fs_io_info fio; /* store buffered io info. */
694 struct rw_semaphore io_rwsem; /* blocking op for bio */
697 /* for inner inode cache management */
698 struct inode_management {
699 struct radix_tree_root ino_root; /* ino entry array */
700 spinlock_t ino_lock; /* for ino entry lock */
701 struct list_head ino_list; /* inode list head */
702 unsigned long ino_num; /* number of entries */
705 /* For s_flag in struct f2fs_sb_info */
707 SBI_IS_DIRTY, /* dirty flag for checkpoint */
708 SBI_IS_CLOSE, /* specify unmounting */
709 SBI_NEED_FSCK, /* need fsck.f2fs to fix */
710 SBI_POR_DOING, /* recovery is doing or not */
713 struct f2fs_sb_info {
714 struct super_block *sb; /* pointer to VFS super block */
715 struct proc_dir_entry *s_proc; /* proc entry */
716 struct buffer_head *raw_super_buf; /* buffer head of raw sb */
717 struct f2fs_super_block *raw_super; /* raw super block pointer */
718 int s_flag; /* flags for sbi */
720 /* for node-related operations */
721 struct f2fs_nm_info *nm_info; /* node manager */
722 struct inode *node_inode; /* cache node blocks */
724 /* for segment-related operations */
725 struct f2fs_sm_info *sm_info; /* segment manager */
727 /* for bio operations */
728 struct f2fs_bio_info read_io; /* for read bios */
729 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */
732 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
733 struct inode *meta_inode; /* cache meta blocks */
734 struct mutex cp_mutex; /* checkpoint procedure lock */
735 struct rw_semaphore cp_rwsem; /* blocking FS operations */
736 struct rw_semaphore node_write; /* locking node writes */
737 struct mutex writepages; /* mutex for writepages() */
738 wait_queue_head_t cp_wait;
739 long cp_expires, cp_interval; /* next expected periodic cp */
741 struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */
743 /* for orphan inode, use 0'th array */
744 unsigned int max_orphans; /* max orphan inodes */
746 /* for directory inode management */
747 struct list_head dir_inode_list; /* dir inode list */
748 spinlock_t dir_inode_lock; /* for dir inode list lock */
750 /* for extent tree cache */
751 struct radix_tree_root extent_tree_root;/* cache extent cache entries */
752 struct rw_semaphore extent_tree_lock; /* locking extent radix tree */
753 struct list_head extent_list; /* lru list for shrinker */
754 spinlock_t extent_lock; /* locking extent lru list */
755 int total_ext_tree; /* extent tree count */
756 atomic_t total_ext_node; /* extent info count */
758 /* basic filesystem units */
759 unsigned int log_sectors_per_block; /* log2 sectors per block */
760 unsigned int log_blocksize; /* log2 block size */
761 unsigned int blocksize; /* block size */
762 unsigned int root_ino_num; /* root inode number*/
763 unsigned int node_ino_num; /* node inode number*/
764 unsigned int meta_ino_num; /* meta inode number*/
765 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
766 unsigned int blocks_per_seg; /* blocks per segment */
767 unsigned int segs_per_sec; /* segments per section */
768 unsigned int secs_per_zone; /* sections per zone */
769 unsigned int total_sections; /* total section count */
770 unsigned int total_node_count; /* total node block count */
771 unsigned int total_valid_node_count; /* valid node block count */
772 unsigned int total_valid_inode_count; /* valid inode count */
773 int active_logs; /* # of active logs */
774 int dir_level; /* directory level */
776 block_t user_block_count; /* # of user blocks */
777 block_t total_valid_block_count; /* # of valid blocks */
778 block_t alloc_valid_block_count; /* # of allocated blocks */
779 block_t discard_blks; /* discard command candidats */
780 block_t last_valid_block_count; /* for recovery */
781 u32 s_next_generation; /* for NFS support */
782 atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */
784 struct f2fs_mount_info mount_opt; /* mount options */
786 /* for cleaning operations */
787 struct mutex gc_mutex; /* mutex for GC */
788 struct f2fs_gc_kthread *gc_thread; /* GC thread */
789 unsigned int cur_victim_sec; /* current victim section num */
791 /* maximum # of trials to find a victim segment for SSR and GC */
792 unsigned int max_victim_search;
795 * for stat information.
796 * one is for the LFS mode, and the other is for the SSR mode.
798 #ifdef CONFIG_F2FS_STAT_FS
799 struct f2fs_stat_info *stat_info; /* FS status information */
800 unsigned int segment_count[2]; /* # of allocated segments */
801 unsigned int block_count[2]; /* # of allocated blocks */
802 atomic_t inplace_count; /* # of inplace update */
803 atomic64_t total_hit_ext; /* # of lookup extent cache */
804 atomic64_t read_hit_rbtree; /* # of hit rbtree extent node */
805 atomic64_t read_hit_largest; /* # of hit largest extent node */
806 atomic64_t read_hit_cached; /* # of hit cached extent node */
807 atomic_t inline_xattr; /* # of inline_xattr inodes */
808 atomic_t inline_inode; /* # of inline_data inodes */
809 atomic_t inline_dir; /* # of inline_dentry inodes */
810 int bg_gc; /* background gc calls */
811 unsigned int n_dirty_dirs; /* # of dir inodes */
813 unsigned int last_victim[2]; /* last victim segment # */
814 spinlock_t stat_lock; /* lock for stat operations */
816 /* For sysfs suppport */
817 struct kobject s_kobj;
818 struct completion s_kobj_unregister;
820 /* For shrinker support */
821 struct list_head s_list;
822 struct mutex umount_mutex;
823 unsigned int shrinker_run_no;
829 static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
831 return container_of(inode, struct f2fs_inode_info, vfs_inode);
834 static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
836 return sb->s_fs_info;
839 static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
841 return F2FS_SB(inode->i_sb);
844 static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
846 return F2FS_I_SB(mapping->host);
849 static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
851 return F2FS_M_SB(page->mapping);
854 static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
856 return (struct f2fs_super_block *)(sbi->raw_super);
859 static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
861 return (struct f2fs_checkpoint *)(sbi->ckpt);
864 static inline struct f2fs_node *F2FS_NODE(struct page *page)
866 return (struct f2fs_node *)page_address(page);
869 static inline struct f2fs_inode *F2FS_INODE(struct page *page)
871 return &((struct f2fs_node *)page_address(page))->i;
874 static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
876 return (struct f2fs_nm_info *)(sbi->nm_info);
879 static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
881 return (struct f2fs_sm_info *)(sbi->sm_info);
884 static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
886 return (struct sit_info *)(SM_I(sbi)->sit_info);
889 static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
891 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
894 static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
896 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
899 static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
901 return sbi->meta_inode->i_mapping;
904 static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
906 return sbi->node_inode->i_mapping;
909 static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
911 return sbi->s_flag & (0x01 << type);
914 static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
916 sbi->s_flag |= (0x01 << type);
919 static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
921 sbi->s_flag &= ~(0x01 << type);
924 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
926 return le64_to_cpu(cp->checkpoint_ver);
929 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
931 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
932 return ckpt_flags & f;
935 static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
937 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
939 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
942 static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
944 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
946 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
949 static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
951 down_read(&sbi->cp_rwsem);
954 static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
956 up_read(&sbi->cp_rwsem);
959 static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
961 f2fs_down_write(&sbi->cp_rwsem, &sbi->cp_mutex);
964 static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
966 up_write(&sbi->cp_rwsem);
969 static inline int __get_cp_reason(struct f2fs_sb_info *sbi)
971 int reason = CP_SYNC;
973 if (test_opt(sbi, FASTBOOT))
974 reason = CP_FASTBOOT;
975 if (is_sbi_flag_set(sbi, SBI_IS_CLOSE))
980 static inline bool __remain_node_summaries(int reason)
982 return (reason == CP_UMOUNT || reason == CP_FASTBOOT);
985 static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
987 return (is_set_ckpt_flags(F2FS_CKPT(sbi), CP_UMOUNT_FLAG) ||
988 is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FASTBOOT_FLAG));
992 * Check whether the given nid is within node id range.
994 static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
996 if (unlikely(nid < F2FS_ROOT_INO(sbi)))
998 if (unlikely(nid >= NM_I(sbi)->max_nid))
1003 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
1006 * Check whether the inode has blocks or not
1008 static inline int F2FS_HAS_BLOCKS(struct inode *inode)
1010 if (F2FS_I(inode)->i_xattr_nid)
1011 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1;
1013 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS;
1016 static inline bool f2fs_has_xattr_block(unsigned int ofs)
1018 return ofs == XATTR_NODE_OFFSET;
1021 static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
1022 struct inode *inode, blkcnt_t count)
1024 block_t valid_block_count;
1026 spin_lock(&sbi->stat_lock);
1028 sbi->total_valid_block_count + (block_t)count;
1029 if (unlikely(valid_block_count > sbi->user_block_count)) {
1030 spin_unlock(&sbi->stat_lock);
1033 inode->i_blocks += count;
1034 sbi->total_valid_block_count = valid_block_count;
1035 sbi->alloc_valid_block_count += (block_t)count;
1036 spin_unlock(&sbi->stat_lock);
1040 static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
1041 struct inode *inode,
1044 spin_lock(&sbi->stat_lock);
1045 f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
1046 f2fs_bug_on(sbi, inode->i_blocks < count);
1047 inode->i_blocks -= count;
1048 sbi->total_valid_block_count -= (block_t)count;
1049 spin_unlock(&sbi->stat_lock);
1052 static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
1054 atomic_inc(&sbi->nr_pages[count_type]);
1055 set_sbi_flag(sbi, SBI_IS_DIRTY);
1058 static inline void inode_inc_dirty_pages(struct inode *inode)
1060 atomic_inc(&F2FS_I(inode)->dirty_pages);
1061 if (S_ISDIR(inode->i_mode))
1062 inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS);
1065 static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
1067 atomic_dec(&sbi->nr_pages[count_type]);
1070 static inline void inode_dec_dirty_pages(struct inode *inode)
1072 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
1073 !S_ISLNK(inode->i_mode))
1076 atomic_dec(&F2FS_I(inode)->dirty_pages);
1078 if (S_ISDIR(inode->i_mode))
1079 dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS);
1082 static inline int get_pages(struct f2fs_sb_info *sbi, int count_type)
1084 return atomic_read(&sbi->nr_pages[count_type]);
1087 static inline int get_dirty_pages(struct inode *inode)
1089 return atomic_read(&F2FS_I(inode)->dirty_pages);
1092 static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
1094 unsigned int pages_per_sec = sbi->segs_per_sec *
1095 (1 << sbi->log_blocks_per_seg);
1096 return ((get_pages(sbi, block_type) + pages_per_sec - 1)
1097 >> sbi->log_blocks_per_seg) / sbi->segs_per_sec;
1100 static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
1102 return sbi->total_valid_block_count;
1105 static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
1107 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1109 /* return NAT or SIT bitmap */
1110 if (flag == NAT_BITMAP)
1111 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
1112 else if (flag == SIT_BITMAP)
1113 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
1118 static inline block_t __cp_payload(struct f2fs_sb_info *sbi)
1120 return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
1123 static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
1125 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1128 if (__cp_payload(sbi) > 0) {
1129 if (flag == NAT_BITMAP)
1130 return &ckpt->sit_nat_version_bitmap;
1132 return (unsigned char *)ckpt + F2FS_BLKSIZE;
1134 offset = (flag == NAT_BITMAP) ?
1135 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
1136 return &ckpt->sit_nat_version_bitmap + offset;
1140 static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
1143 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1144 unsigned long long ckpt_version = cur_cp_version(ckpt);
1146 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
1149 * odd numbered checkpoint should at cp segment 0
1150 * and even segment must be at cp segment 1
1152 if (!(ckpt_version & 1))
1153 start_addr += sbi->blocks_per_seg;
1158 static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
1160 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
1163 static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
1164 struct inode *inode)
1166 block_t valid_block_count;
1167 unsigned int valid_node_count;
1169 spin_lock(&sbi->stat_lock);
1171 valid_block_count = sbi->total_valid_block_count + 1;
1172 if (unlikely(valid_block_count > sbi->user_block_count)) {
1173 spin_unlock(&sbi->stat_lock);
1177 valid_node_count = sbi->total_valid_node_count + 1;
1178 if (unlikely(valid_node_count > sbi->total_node_count)) {
1179 spin_unlock(&sbi->stat_lock);
1186 sbi->alloc_valid_block_count++;
1187 sbi->total_valid_node_count++;
1188 sbi->total_valid_block_count++;
1189 spin_unlock(&sbi->stat_lock);
1194 static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
1195 struct inode *inode)
1197 spin_lock(&sbi->stat_lock);
1199 f2fs_bug_on(sbi, !sbi->total_valid_block_count);
1200 f2fs_bug_on(sbi, !sbi->total_valid_node_count);
1201 f2fs_bug_on(sbi, !inode->i_blocks);
1204 sbi->total_valid_node_count--;
1205 sbi->total_valid_block_count--;
1207 spin_unlock(&sbi->stat_lock);
1210 static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
1212 return sbi->total_valid_node_count;
1215 static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
1217 spin_lock(&sbi->stat_lock);
1218 f2fs_bug_on(sbi, sbi->total_valid_inode_count == sbi->total_node_count);
1219 sbi->total_valid_inode_count++;
1220 spin_unlock(&sbi->stat_lock);
1223 static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
1225 spin_lock(&sbi->stat_lock);
1226 f2fs_bug_on(sbi, !sbi->total_valid_inode_count);
1227 sbi->total_valid_inode_count--;
1228 spin_unlock(&sbi->stat_lock);
1231 static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi)
1233 return sbi->total_valid_inode_count;
1236 static inline struct page *f2fs_grab_cache_page(struct address_space *mapping,
1237 pgoff_t index, bool for_write)
1240 return grab_cache_page(mapping, index);
1241 return grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS);
1244 static inline void f2fs_copy_page(struct page *src, struct page *dst)
1246 char *src_kaddr = kmap(src);
1247 char *dst_kaddr = kmap(dst);
1249 memcpy(dst_kaddr, src_kaddr, PAGE_SIZE);
1254 static inline void f2fs_put_page(struct page *page, int unlock)
1260 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
1263 page_cache_release(page);
1266 static inline void f2fs_put_dnode(struct dnode_of_data *dn)
1269 f2fs_put_page(dn->node_page, 1);
1270 if (dn->inode_page && dn->node_page != dn->inode_page)
1271 f2fs_put_page(dn->inode_page, 0);
1272 dn->node_page = NULL;
1273 dn->inode_page = NULL;
1276 static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
1279 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
1282 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
1287 entry = kmem_cache_alloc(cachep, flags);
1289 entry = kmem_cache_alloc(cachep, flags | __GFP_NOFAIL);
1293 static inline struct bio *f2fs_bio_alloc(int npages)
1297 /* No failure on bio allocation */
1298 bio = bio_alloc(GFP_NOIO, npages);
1300 bio = bio_alloc(GFP_NOIO | __GFP_NOFAIL, npages);
1304 static inline void f2fs_radix_tree_insert(struct radix_tree_root *root,
1305 unsigned long index, void *item)
1307 while (radix_tree_insert(root, index, item))
1311 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1313 static inline bool IS_INODE(struct page *page)
1315 struct f2fs_node *p = F2FS_NODE(page);
1316 return RAW_IS_INODE(p);
1319 static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
1321 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
1324 static inline block_t datablock_addr(struct page *node_page,
1325 unsigned int offset)
1327 struct f2fs_node *raw_node;
1329 raw_node = F2FS_NODE(node_page);
1330 addr_array = blkaddr_in_node(raw_node);
1331 return le32_to_cpu(addr_array[offset]);
1334 static inline int f2fs_test_bit(unsigned int nr, char *addr)
1339 mask = 1 << (7 - (nr & 0x07));
1340 return mask & *addr;
1343 static inline void f2fs_set_bit(unsigned int nr, char *addr)
1348 mask = 1 << (7 - (nr & 0x07));
1352 static inline void f2fs_clear_bit(unsigned int nr, char *addr)
1357 mask = 1 << (7 - (nr & 0x07));
1361 static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
1367 mask = 1 << (7 - (nr & 0x07));
1373 static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
1379 mask = 1 << (7 - (nr & 0x07));
1385 static inline void f2fs_change_bit(unsigned int nr, char *addr)
1390 mask = 1 << (7 - (nr & 0x07));
1394 /* used for f2fs_inode_info->flags */
1396 FI_NEW_INODE, /* indicate newly allocated inode */
1397 FI_DIRTY_INODE, /* indicate inode is dirty or not */
1398 FI_DIRTY_DIR, /* indicate directory has dirty pages */
1399 FI_INC_LINK, /* need to increment i_nlink */
1400 FI_ACL_MODE, /* indicate acl mode */
1401 FI_NO_ALLOC, /* should not allocate any blocks */
1402 FI_FREE_NID, /* free allocated nide */
1403 FI_UPDATE_DIR, /* should update inode block for consistency */
1404 FI_DELAY_IPUT, /* used for the recovery */
1405 FI_NO_EXTENT, /* not to use the extent cache */
1406 FI_INLINE_XATTR, /* used for inline xattr */
1407 FI_INLINE_DATA, /* used for inline data*/
1408 FI_INLINE_DENTRY, /* used for inline dentry */
1409 FI_APPEND_WRITE, /* inode has appended data */
1410 FI_UPDATE_WRITE, /* inode has in-place-update data */
1411 FI_NEED_IPU, /* used for ipu per file */
1412 FI_ATOMIC_FILE, /* indicate atomic file */
1413 FI_VOLATILE_FILE, /* indicate volatile file */
1414 FI_FIRST_BLOCK_WRITTEN, /* indicate #0 data block was written */
1415 FI_DROP_CACHE, /* drop dirty page cache */
1416 FI_DATA_EXIST, /* indicate data exists */
1417 FI_INLINE_DOTS, /* indicate inline dot dentries */
1420 static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag)
1422 if (!test_bit(flag, &fi->flags))
1423 set_bit(flag, &fi->flags);
1426 static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag)
1428 return test_bit(flag, &fi->flags);
1431 static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag)
1433 if (test_bit(flag, &fi->flags))
1434 clear_bit(flag, &fi->flags);
1437 static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode)
1439 fi->i_acl_mode = mode;
1440 set_inode_flag(fi, FI_ACL_MODE);
1443 static inline void get_inline_info(struct f2fs_inode_info *fi,
1444 struct f2fs_inode *ri)
1446 if (ri->i_inline & F2FS_INLINE_XATTR)
1447 set_inode_flag(fi, FI_INLINE_XATTR);
1448 if (ri->i_inline & F2FS_INLINE_DATA)
1449 set_inode_flag(fi, FI_INLINE_DATA);
1450 if (ri->i_inline & F2FS_INLINE_DENTRY)
1451 set_inode_flag(fi, FI_INLINE_DENTRY);
1452 if (ri->i_inline & F2FS_DATA_EXIST)
1453 set_inode_flag(fi, FI_DATA_EXIST);
1454 if (ri->i_inline & F2FS_INLINE_DOTS)
1455 set_inode_flag(fi, FI_INLINE_DOTS);
1458 static inline void set_raw_inline(struct f2fs_inode_info *fi,
1459 struct f2fs_inode *ri)
1463 if (is_inode_flag_set(fi, FI_INLINE_XATTR))
1464 ri->i_inline |= F2FS_INLINE_XATTR;
1465 if (is_inode_flag_set(fi, FI_INLINE_DATA))
1466 ri->i_inline |= F2FS_INLINE_DATA;
1467 if (is_inode_flag_set(fi, FI_INLINE_DENTRY))
1468 ri->i_inline |= F2FS_INLINE_DENTRY;
1469 if (is_inode_flag_set(fi, FI_DATA_EXIST))
1470 ri->i_inline |= F2FS_DATA_EXIST;
1471 if (is_inode_flag_set(fi, FI_INLINE_DOTS))
1472 ri->i_inline |= F2FS_INLINE_DOTS;
1475 static inline int f2fs_has_inline_xattr(struct inode *inode)
1477 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR);
1480 static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi)
1482 if (f2fs_has_inline_xattr(&fi->vfs_inode))
1483 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
1484 return DEF_ADDRS_PER_INODE;
1487 static inline void *inline_xattr_addr(struct page *page)
1489 struct f2fs_inode *ri = F2FS_INODE(page);
1490 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
1491 F2FS_INLINE_XATTR_ADDRS]);
1494 static inline int inline_xattr_size(struct inode *inode)
1496 if (f2fs_has_inline_xattr(inode))
1497 return F2FS_INLINE_XATTR_ADDRS << 2;
1502 static inline int f2fs_has_inline_data(struct inode *inode)
1504 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA);
1507 static inline void f2fs_clear_inline_inode(struct inode *inode)
1509 clear_inode_flag(F2FS_I(inode), FI_INLINE_DATA);
1510 clear_inode_flag(F2FS_I(inode), FI_DATA_EXIST);
1513 static inline int f2fs_exist_data(struct inode *inode)
1515 return is_inode_flag_set(F2FS_I(inode), FI_DATA_EXIST);
1518 static inline int f2fs_has_inline_dots(struct inode *inode)
1520 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DOTS);
1523 static inline bool f2fs_is_atomic_file(struct inode *inode)
1525 return is_inode_flag_set(F2FS_I(inode), FI_ATOMIC_FILE);
1528 static inline bool f2fs_is_volatile_file(struct inode *inode)
1530 return is_inode_flag_set(F2FS_I(inode), FI_VOLATILE_FILE);
1533 static inline bool f2fs_is_first_block_written(struct inode *inode)
1535 return is_inode_flag_set(F2FS_I(inode), FI_FIRST_BLOCK_WRITTEN);
1538 static inline bool f2fs_is_drop_cache(struct inode *inode)
1540 return is_inode_flag_set(F2FS_I(inode), FI_DROP_CACHE);
1543 static inline void *inline_data_addr(struct page *page)
1545 struct f2fs_inode *ri = F2FS_INODE(page);
1546 return (void *)&(ri->i_addr[1]);
1549 static inline int f2fs_has_inline_dentry(struct inode *inode)
1551 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DENTRY);
1554 static inline void f2fs_dentry_kunmap(struct inode *dir, struct page *page)
1556 if (!f2fs_has_inline_dentry(dir))
1560 static inline int is_file(struct inode *inode, int type)
1562 return F2FS_I(inode)->i_advise & type;
1565 static inline void set_file(struct inode *inode, int type)
1567 F2FS_I(inode)->i_advise |= type;
1570 static inline void clear_file(struct inode *inode, int type)
1572 F2FS_I(inode)->i_advise &= ~type;
1575 static inline int f2fs_readonly(struct super_block *sb)
1577 return sb->s_flags & MS_RDONLY;
1580 static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
1582 return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1585 static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi)
1587 set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1588 sbi->sb->s_flags |= MS_RDONLY;
1591 static inline bool is_dot_dotdot(const struct qstr *str)
1593 if (str->len == 1 && str->name[0] == '.')
1596 if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.')
1602 static inline bool f2fs_may_extent_tree(struct inode *inode)
1604 mode_t mode = inode->i_mode;
1606 if (!test_opt(F2FS_I_SB(inode), EXTENT_CACHE) ||
1607 is_inode_flag_set(F2FS_I(inode), FI_NO_EXTENT))
1610 return S_ISREG(mode);
1613 static inline void *f2fs_kvmalloc(size_t size, gfp_t flags)
1617 ret = kmalloc(size, flags | __GFP_NOWARN);
1619 ret = __vmalloc(size, flags, PAGE_KERNEL);
1623 static inline void *f2fs_kvzalloc(size_t size, gfp_t flags)
1627 ret = kzalloc(size, flags | __GFP_NOWARN);
1629 ret = __vmalloc(size, flags | __GFP_ZERO, PAGE_KERNEL);
1633 #define get_inode_mode(i) \
1634 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1635 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1637 /* get offset of first page in next direct node */
1638 #define PGOFS_OF_NEXT_DNODE(pgofs, fi) \
1639 ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \
1640 (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \
1641 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi))
1646 int f2fs_sync_file(struct file *, loff_t, loff_t, int);
1647 void truncate_data_blocks(struct dnode_of_data *);
1648 int truncate_blocks(struct inode *, u64, bool);
1649 int f2fs_truncate(struct inode *, bool);
1650 int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
1651 int f2fs_setattr(struct dentry *, struct iattr *);
1652 int truncate_hole(struct inode *, pgoff_t, pgoff_t);
1653 int truncate_data_blocks_range(struct dnode_of_data *, int);
1654 long f2fs_ioctl(struct file *, unsigned int, unsigned long);
1655 long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long);
1660 void f2fs_set_inode_flags(struct inode *);
1661 struct inode *f2fs_iget(struct super_block *, unsigned long);
1662 int try_to_free_nats(struct f2fs_sb_info *, int);
1663 void update_inode(struct inode *, struct page *);
1664 void update_inode_page(struct inode *);
1665 int f2fs_write_inode(struct inode *, struct writeback_control *);
1666 void f2fs_evict_inode(struct inode *);
1667 void handle_failed_inode(struct inode *);
1672 struct dentry *f2fs_get_parent(struct dentry *child);
1677 extern unsigned char f2fs_filetype_table[F2FS_FT_MAX];
1678 void set_de_type(struct f2fs_dir_entry *, umode_t);
1680 struct f2fs_dir_entry *find_target_dentry(struct f2fs_filename *,
1681 f2fs_hash_t, int *, struct f2fs_dentry_ptr *);
1682 bool f2fs_fill_dentries(struct dir_context *, struct f2fs_dentry_ptr *,
1683 unsigned int, struct f2fs_str *);
1684 void do_make_empty_dir(struct inode *, struct inode *,
1685 struct f2fs_dentry_ptr *);
1686 struct page *init_inode_metadata(struct inode *, struct inode *,
1687 const struct qstr *, struct page *);
1688 void update_parent_metadata(struct inode *, struct inode *, unsigned int);
1689 int room_for_filename(const void *, int, int);
1690 void f2fs_drop_nlink(struct inode *, struct inode *, struct page *);
1691 struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *,
1693 struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
1694 ino_t f2fs_inode_by_name(struct inode *, struct qstr *);
1695 void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
1696 struct page *, struct inode *);
1697 int update_dent_inode(struct inode *, struct inode *, const struct qstr *);
1698 void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *,
1699 const struct qstr *, f2fs_hash_t , unsigned int);
1700 int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *, nid_t,
1702 void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *,
1704 int f2fs_do_tmpfile(struct inode *, struct inode *);
1705 bool f2fs_empty_dir(struct inode *);
1707 static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
1709 return __f2fs_add_link(d_inode(dentry->d_parent), &dentry->d_name,
1710 inode, inode->i_ino, inode->i_mode);
1716 int f2fs_commit_super(struct f2fs_sb_info *, bool);
1717 int f2fs_sync_fs(struct super_block *, int);
1718 extern __printf(3, 4)
1719 void f2fs_msg(struct super_block *, const char *, const char *, ...);
1724 f2fs_hash_t f2fs_dentry_hash(const struct qstr *);
1729 struct dnode_of_data;
1732 bool available_free_memory(struct f2fs_sb_info *, int);
1733 int need_dentry_mark(struct f2fs_sb_info *, nid_t);
1734 bool is_checkpointed_node(struct f2fs_sb_info *, nid_t);
1735 bool need_inode_block_update(struct f2fs_sb_info *, nid_t);
1736 void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
1737 int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);
1738 int truncate_inode_blocks(struct inode *, pgoff_t);
1739 int truncate_xattr_node(struct inode *, struct page *);
1740 int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t);
1741 int remove_inode_page(struct inode *);
1742 struct page *new_inode_page(struct inode *);
1743 struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *);
1744 void ra_node_page(struct f2fs_sb_info *, nid_t);
1745 struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
1746 struct page *get_node_page_ra(struct page *, int);
1747 void sync_inode_page(struct dnode_of_data *);
1748 int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *);
1749 bool alloc_nid(struct f2fs_sb_info *, nid_t *);
1750 void alloc_nid_done(struct f2fs_sb_info *, nid_t);
1751 void alloc_nid_failed(struct f2fs_sb_info *, nid_t);
1752 int try_to_free_nids(struct f2fs_sb_info *, int);
1753 void recover_inline_xattr(struct inode *, struct page *);
1754 void recover_xattr_data(struct inode *, struct page *, block_t);
1755 int recover_inode_page(struct f2fs_sb_info *, struct page *);
1756 int restore_node_summary(struct f2fs_sb_info *, unsigned int,
1757 struct f2fs_summary_block *);
1758 void flush_nat_entries(struct f2fs_sb_info *);
1759 int build_node_manager(struct f2fs_sb_info *);
1760 void destroy_node_manager(struct f2fs_sb_info *);
1761 int __init create_node_manager_caches(void);
1762 void destroy_node_manager_caches(void);
1767 void register_inmem_page(struct inode *, struct page *);
1768 int commit_inmem_pages(struct inode *, bool);
1769 void f2fs_balance_fs(struct f2fs_sb_info *);
1770 void f2fs_balance_fs_bg(struct f2fs_sb_info *);
1771 int f2fs_issue_flush(struct f2fs_sb_info *);
1772 int create_flush_cmd_control(struct f2fs_sb_info *);
1773 void destroy_flush_cmd_control(struct f2fs_sb_info *);
1774 void invalidate_blocks(struct f2fs_sb_info *, block_t);
1775 bool is_checkpointed_data(struct f2fs_sb_info *, block_t);
1776 void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t);
1777 void clear_prefree_segments(struct f2fs_sb_info *, struct cp_control *);
1778 void release_discard_addrs(struct f2fs_sb_info *);
1779 bool discard_next_dnode(struct f2fs_sb_info *, block_t);
1780 int npages_for_summary_flush(struct f2fs_sb_info *, bool);
1781 void allocate_new_segments(struct f2fs_sb_info *);
1782 int f2fs_trim_fs(struct f2fs_sb_info *, struct fstrim_range *);
1783 struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
1784 void update_meta_page(struct f2fs_sb_info *, void *, block_t);
1785 void write_meta_page(struct f2fs_sb_info *, struct page *);
1786 void write_node_page(unsigned int, struct f2fs_io_info *);
1787 void write_data_page(struct dnode_of_data *, struct f2fs_io_info *);
1788 void rewrite_data_page(struct f2fs_io_info *);
1789 void f2fs_replace_block(struct f2fs_sb_info *, struct dnode_of_data *,
1790 block_t, block_t, unsigned char, bool);
1791 void allocate_data_block(struct f2fs_sb_info *, struct page *,
1792 block_t, block_t *, struct f2fs_summary *, int);
1793 void f2fs_wait_on_page_writeback(struct page *, enum page_type);
1794 void write_data_summaries(struct f2fs_sb_info *, block_t);
1795 void write_node_summaries(struct f2fs_sb_info *, block_t);
1796 int lookup_journal_in_cursum(struct f2fs_summary_block *,
1797 int, unsigned int, int);
1798 void flush_sit_entries(struct f2fs_sb_info *, struct cp_control *);
1799 int build_segment_manager(struct f2fs_sb_info *);
1800 void destroy_segment_manager(struct f2fs_sb_info *);
1801 int __init create_segment_manager_caches(void);
1802 void destroy_segment_manager_caches(void);
1807 struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
1808 struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
1809 struct page *get_tmp_page(struct f2fs_sb_info *, pgoff_t);
1810 bool is_valid_blkaddr(struct f2fs_sb_info *, block_t, int);
1811 int ra_meta_pages(struct f2fs_sb_info *, block_t, int, int, bool);
1812 void ra_meta_pages_cond(struct f2fs_sb_info *, pgoff_t);
1813 long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
1814 void add_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
1815 void remove_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
1816 void release_dirty_inode(struct f2fs_sb_info *);
1817 bool exist_written_data(struct f2fs_sb_info *, nid_t, int);
1818 int acquire_orphan_inode(struct f2fs_sb_info *);
1819 void release_orphan_inode(struct f2fs_sb_info *);
1820 void add_orphan_inode(struct f2fs_sb_info *, nid_t);
1821 void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
1822 int recover_orphan_inodes(struct f2fs_sb_info *);
1823 int get_valid_checkpoint(struct f2fs_sb_info *);
1824 void update_dirty_page(struct inode *, struct page *);
1825 void add_dirty_dir_inode(struct inode *);
1826 void remove_dirty_dir_inode(struct inode *);
1827 void sync_dirty_dir_inodes(struct f2fs_sb_info *);
1828 void write_checkpoint(struct f2fs_sb_info *, struct cp_control *);
1829 void init_ino_entry_info(struct f2fs_sb_info *);
1830 int __init create_checkpoint_caches(void);
1831 void destroy_checkpoint_caches(void);
1836 void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int);
1837 int f2fs_submit_page_bio(struct f2fs_io_info *);
1838 void f2fs_submit_page_mbio(struct f2fs_io_info *);
1839 void set_data_blkaddr(struct dnode_of_data *);
1840 int reserve_new_block(struct dnode_of_data *);
1841 int f2fs_get_block(struct dnode_of_data *, pgoff_t);
1842 int f2fs_reserve_block(struct dnode_of_data *, pgoff_t);
1843 struct page *get_read_data_page(struct inode *, pgoff_t, int, bool);
1844 struct page *find_data_page(struct inode *, pgoff_t);
1845 struct page *get_lock_data_page(struct inode *, pgoff_t, bool);
1846 struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
1847 int do_write_data_page(struct f2fs_io_info *);
1848 int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64);
1849 void f2fs_invalidate_page(struct page *, unsigned int, unsigned int);
1850 int f2fs_release_page(struct page *, gfp_t);
1855 int start_gc_thread(struct f2fs_sb_info *);
1856 void stop_gc_thread(struct f2fs_sb_info *);
1857 block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *);
1858 int f2fs_gc(struct f2fs_sb_info *, bool);
1859 void build_gc_manager(struct f2fs_sb_info *);
1864 int recover_fsync_data(struct f2fs_sb_info *);
1865 bool space_for_roll_forward(struct f2fs_sb_info *);
1870 #ifdef CONFIG_F2FS_STAT_FS
1871 struct f2fs_stat_info {
1872 struct list_head stat_list;
1873 struct f2fs_sb_info *sbi;
1874 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
1875 int main_area_segs, main_area_sections, main_area_zones;
1876 unsigned long long hit_largest, hit_cached, hit_rbtree;
1877 unsigned long long hit_total, total_ext;
1878 int ext_tree, ext_node;
1879 int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta;
1880 int nats, dirty_nats, sits, dirty_sits, fnids;
1881 int total_count, utilization;
1882 int bg_gc, inmem_pages, wb_pages;
1883 int inline_xattr, inline_inode, inline_dir;
1884 unsigned int valid_count, valid_node_count, valid_inode_count;
1885 unsigned int bimodal, avg_vblocks;
1886 int util_free, util_valid, util_invalid;
1887 int rsvd_segs, overp_segs;
1888 int dirty_count, node_pages, meta_pages;
1889 int prefree_count, call_count, cp_count;
1890 int tot_segs, node_segs, data_segs, free_segs, free_secs;
1891 int bg_node_segs, bg_data_segs;
1892 int tot_blks, data_blks, node_blks;
1893 int bg_data_blks, bg_node_blks;
1894 int curseg[NR_CURSEG_TYPE];
1895 int cursec[NR_CURSEG_TYPE];
1896 int curzone[NR_CURSEG_TYPE];
1898 unsigned int segment_count[2];
1899 unsigned int block_count[2];
1900 unsigned int inplace_count;
1901 unsigned long long base_mem, cache_mem, page_mem;
1904 static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
1906 return (struct f2fs_stat_info *)sbi->stat_info;
1909 #define stat_inc_cp_count(si) ((si)->cp_count++)
1910 #define stat_inc_call_count(si) ((si)->call_count++)
1911 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1912 #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1913 #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
1914 #define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext))
1915 #define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree))
1916 #define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest))
1917 #define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached))
1918 #define stat_inc_inline_xattr(inode) \
1920 if (f2fs_has_inline_xattr(inode)) \
1921 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
1923 #define stat_dec_inline_xattr(inode) \
1925 if (f2fs_has_inline_xattr(inode)) \
1926 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
1928 #define stat_inc_inline_inode(inode) \
1930 if (f2fs_has_inline_data(inode)) \
1931 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
1933 #define stat_dec_inline_inode(inode) \
1935 if (f2fs_has_inline_data(inode)) \
1936 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
1938 #define stat_inc_inline_dir(inode) \
1940 if (f2fs_has_inline_dentry(inode)) \
1941 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
1943 #define stat_dec_inline_dir(inode) \
1945 if (f2fs_has_inline_dentry(inode)) \
1946 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
1948 #define stat_inc_seg_type(sbi, curseg) \
1949 ((sbi)->segment_count[(curseg)->alloc_type]++)
1950 #define stat_inc_block_count(sbi, curseg) \
1951 ((sbi)->block_count[(curseg)->alloc_type]++)
1952 #define stat_inc_inplace_blocks(sbi) \
1953 (atomic_inc(&(sbi)->inplace_count))
1954 #define stat_inc_seg_count(sbi, type, gc_type) \
1956 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1958 if (type == SUM_TYPE_DATA) { \
1960 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
1963 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
1967 #define stat_inc_tot_blk_count(si, blks) \
1968 (si->tot_blks += (blks))
1970 #define stat_inc_data_blk_count(sbi, blks, gc_type) \
1972 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1973 stat_inc_tot_blk_count(si, blks); \
1974 si->data_blks += (blks); \
1975 si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \
1978 #define stat_inc_node_blk_count(sbi, blks, gc_type) \
1980 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1981 stat_inc_tot_blk_count(si, blks); \
1982 si->node_blks += (blks); \
1983 si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \
1986 int f2fs_build_stats(struct f2fs_sb_info *);
1987 void f2fs_destroy_stats(struct f2fs_sb_info *);
1988 void __init f2fs_create_root_stats(void);
1989 void f2fs_destroy_root_stats(void);
1991 #define stat_inc_cp_count(si)
1992 #define stat_inc_call_count(si)
1993 #define stat_inc_bggc_count(si)
1994 #define stat_inc_dirty_dir(sbi)
1995 #define stat_dec_dirty_dir(sbi)
1996 #define stat_inc_total_hit(sb)
1997 #define stat_inc_rbtree_node_hit(sb)
1998 #define stat_inc_largest_node_hit(sbi)
1999 #define stat_inc_cached_node_hit(sbi)
2000 #define stat_inc_inline_xattr(inode)
2001 #define stat_dec_inline_xattr(inode)
2002 #define stat_inc_inline_inode(inode)
2003 #define stat_dec_inline_inode(inode)
2004 #define stat_inc_inline_dir(inode)
2005 #define stat_dec_inline_dir(inode)
2006 #define stat_inc_seg_type(sbi, curseg)
2007 #define stat_inc_block_count(sbi, curseg)
2008 #define stat_inc_inplace_blocks(sbi)
2009 #define stat_inc_seg_count(sbi, type, gc_type)
2010 #define stat_inc_tot_blk_count(si, blks)
2011 #define stat_inc_data_blk_count(sbi, blks, gc_type)
2012 #define stat_inc_node_blk_count(sbi, blks, gc_type)
2014 static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
2015 static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
2016 static inline void __init f2fs_create_root_stats(void) { }
2017 static inline void f2fs_destroy_root_stats(void) { }
2020 extern const struct file_operations f2fs_dir_operations;
2021 extern const struct file_operations f2fs_file_operations;
2022 extern const struct inode_operations f2fs_file_inode_operations;
2023 extern const struct address_space_operations f2fs_dblock_aops;
2024 extern const struct address_space_operations f2fs_node_aops;
2025 extern const struct address_space_operations f2fs_meta_aops;
2026 extern const struct inode_operations f2fs_dir_inode_operations;
2027 extern const struct inode_operations f2fs_symlink_inode_operations;
2028 extern const struct inode_operations f2fs_encrypted_symlink_inode_operations;
2029 extern const struct inode_operations f2fs_special_inode_operations;
2030 extern struct kmem_cache *inode_entry_slab;
2035 bool f2fs_may_inline_data(struct inode *);
2036 bool f2fs_may_inline_dentry(struct inode *);
2037 void read_inline_data(struct page *, struct page *);
2038 bool truncate_inline_inode(struct page *, u64);
2039 int f2fs_read_inline_data(struct inode *, struct page *);
2040 int f2fs_convert_inline_page(struct dnode_of_data *, struct page *);
2041 int f2fs_convert_inline_inode(struct inode *);
2042 int f2fs_write_inline_data(struct inode *, struct page *);
2043 bool recover_inline_data(struct inode *, struct page *);
2044 struct f2fs_dir_entry *find_in_inline_dir(struct inode *,
2045 struct f2fs_filename *, struct page **);
2046 struct f2fs_dir_entry *f2fs_parent_inline_dir(struct inode *, struct page **);
2047 int make_empty_inline_dir(struct inode *inode, struct inode *, struct page *);
2048 int f2fs_add_inline_entry(struct inode *, const struct qstr *, struct inode *,
2050 void f2fs_delete_inline_entry(struct f2fs_dir_entry *, struct page *,
2051 struct inode *, struct inode *);
2052 bool f2fs_empty_inline_dir(struct inode *);
2053 int f2fs_read_inline_dir(struct file *, struct dir_context *,
2059 unsigned long f2fs_shrink_count(struct shrinker *, struct shrink_control *);
2060 unsigned long f2fs_shrink_scan(struct shrinker *, struct shrink_control *);
2061 void f2fs_join_shrinker(struct f2fs_sb_info *);
2062 void f2fs_leave_shrinker(struct f2fs_sb_info *);
2067 unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *, int);
2068 void f2fs_drop_largest_extent(struct inode *, pgoff_t);
2069 void f2fs_init_extent_tree(struct inode *, struct f2fs_extent *);
2070 unsigned int f2fs_destroy_extent_node(struct inode *);
2071 void f2fs_destroy_extent_tree(struct inode *);
2072 bool f2fs_lookup_extent_cache(struct inode *, pgoff_t, struct extent_info *);
2073 void f2fs_update_extent_cache(struct dnode_of_data *);
2074 void f2fs_update_extent_cache_range(struct dnode_of_data *dn,
2075 pgoff_t, block_t, unsigned int);
2076 void init_extent_cache_info(struct f2fs_sb_info *);
2077 int __init create_extent_cache(void);
2078 void destroy_extent_cache(void);
2083 static inline int f2fs_encrypted_inode(struct inode *inode)
2085 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2086 return file_is_encrypt(inode);
2092 static inline void f2fs_set_encrypted_inode(struct inode *inode)
2094 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2095 file_set_encrypt(inode);
2099 static inline bool f2fs_bio_encrypted(struct bio *bio)
2101 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2102 return unlikely(bio->bi_private != NULL);
2108 static inline int f2fs_sb_has_crypto(struct super_block *sb)
2110 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2111 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_ENCRYPT);
2117 static inline bool f2fs_may_encrypt(struct inode *inode)
2119 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2120 mode_t mode = inode->i_mode;
2122 return (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode));
2128 /* crypto_policy.c */
2129 int f2fs_is_child_context_consistent_with_parent(struct inode *,
2131 int f2fs_inherit_context(struct inode *, struct inode *, struct page *);
2132 int f2fs_process_policy(const struct f2fs_encryption_policy *, struct inode *);
2133 int f2fs_get_policy(struct inode *, struct f2fs_encryption_policy *);
2136 extern struct kmem_cache *f2fs_crypt_info_cachep;
2137 bool f2fs_valid_contents_enc_mode(uint32_t);
2138 uint32_t f2fs_validate_encryption_key_size(uint32_t, uint32_t);
2139 struct f2fs_crypto_ctx *f2fs_get_crypto_ctx(struct inode *);
2140 void f2fs_release_crypto_ctx(struct f2fs_crypto_ctx *);
2141 struct page *f2fs_encrypt(struct inode *, struct page *);
2142 int f2fs_decrypt(struct f2fs_crypto_ctx *, struct page *);
2143 int f2fs_decrypt_one(struct inode *, struct page *);
2144 void f2fs_end_io_crypto_work(struct f2fs_crypto_ctx *, struct bio *);
2147 void f2fs_free_encryption_info(struct inode *, struct f2fs_crypt_info *);
2148 int _f2fs_get_encryption_info(struct inode *inode);
2150 /* crypto_fname.c */
2151 bool f2fs_valid_filenames_enc_mode(uint32_t);
2152 u32 f2fs_fname_crypto_round_up(u32, u32);
2153 int f2fs_fname_crypto_alloc_buffer(struct inode *, u32, struct f2fs_str *);
2154 int f2fs_fname_disk_to_usr(struct inode *, f2fs_hash_t *,
2155 const struct f2fs_str *, struct f2fs_str *);
2156 int f2fs_fname_usr_to_disk(struct inode *, const struct qstr *,
2159 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2160 void f2fs_restore_and_release_control_page(struct page **);
2161 void f2fs_restore_control_page(struct page *);
2163 int __init f2fs_init_crypto(void);
2164 int f2fs_crypto_initialize(void);
2165 void f2fs_exit_crypto(void);
2167 int f2fs_has_encryption_key(struct inode *);
2169 static inline int f2fs_get_encryption_info(struct inode *inode)
2171 struct f2fs_crypt_info *ci = F2FS_I(inode)->i_crypt_info;
2174 (ci->ci_keyring_key &&
2175 (ci->ci_keyring_key->flags & ((1 << KEY_FLAG_INVALIDATED) |
2176 (1 << KEY_FLAG_REVOKED) |
2177 (1 << KEY_FLAG_DEAD)))))
2178 return _f2fs_get_encryption_info(inode);
2182 void f2fs_fname_crypto_free_buffer(struct f2fs_str *);
2183 int f2fs_fname_setup_filename(struct inode *, const struct qstr *,
2184 int lookup, struct f2fs_filename *);
2185 void f2fs_fname_free_filename(struct f2fs_filename *);
2187 static inline void f2fs_restore_and_release_control_page(struct page **p) { }
2188 static inline void f2fs_restore_control_page(struct page *p) { }
2190 static inline int __init f2fs_init_crypto(void) { return 0; }
2191 static inline void f2fs_exit_crypto(void) { }
2193 static inline int f2fs_has_encryption_key(struct inode *i) { return 0; }
2194 static inline int f2fs_get_encryption_info(struct inode *i) { return 0; }
2195 static inline void f2fs_fname_crypto_free_buffer(struct f2fs_str *p) { }
2197 static inline int f2fs_fname_setup_filename(struct inode *dir,
2198 const struct qstr *iname,
2199 int lookup, struct f2fs_filename *fname)
2201 memset(fname, 0, sizeof(struct f2fs_filename));
2202 fname->usr_fname = iname;
2203 fname->disk_name.name = (unsigned char *)iname->name;
2204 fname->disk_name.len = iname->len;
2208 static inline void f2fs_fname_free_filename(struct f2fs_filename *fname) { }