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1/*
2 * fs/f2fs/f2fs.h
3 *
4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
6 *
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.
10 */
11#ifndef _LINUX_F2FS_H
12#define _LINUX_F2FS_H
13
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/cred.h>
23#include <linux/vmalloc.h>
24#include <linux/bio.h>
25#include <linux/blkdev.h>
26#include <linux/quotaops.h>
27#include <crypto/hash.h>
28
29#define __FS_HAS_ENCRYPTION IS_ENABLED(CONFIG_F2FS_FS_ENCRYPTION)
30#include <linux/fscrypt.h>
31
32#ifdef CONFIG_F2FS_CHECK_FS
33#define f2fs_bug_on(sbi, condition) BUG_ON(condition)
34#else
35#define f2fs_bug_on(sbi, condition) \
36 do { \
37 if (unlikely(condition)) { \
38 WARN_ON(1); \
39 set_sbi_flag(sbi, SBI_NEED_FSCK); \
40 } \
41 } while (0)
42#endif
43
44#ifdef CONFIG_F2FS_FAULT_INJECTION
45enum {
46 FAULT_KMALLOC,
47 FAULT_KVMALLOC,
48 FAULT_PAGE_ALLOC,
49 FAULT_PAGE_GET,
50 FAULT_ALLOC_BIO,
51 FAULT_ALLOC_NID,
52 FAULT_ORPHAN,
53 FAULT_BLOCK,
54 FAULT_DIR_DEPTH,
55 FAULT_EVICT_INODE,
56 FAULT_TRUNCATE,
57 FAULT_IO,
58 FAULT_CHECKPOINT,
59 FAULT_MAX,
60};
61
62struct f2fs_fault_info {
63 atomic_t inject_ops;
64 unsigned int inject_rate;
65 unsigned int inject_type;
66};
67
68extern char *fault_name[FAULT_MAX];
69#define IS_FAULT_SET(fi, type) ((fi)->inject_type & (1 << (type)))
70#endif
71
72/*
73 * For mount options
74 */
75#define F2FS_MOUNT_BG_GC 0x00000001
76#define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
77#define F2FS_MOUNT_DISCARD 0x00000004
78#define F2FS_MOUNT_NOHEAP 0x00000008
79#define F2FS_MOUNT_XATTR_USER 0x00000010
80#define F2FS_MOUNT_POSIX_ACL 0x00000020
81#define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
82#define F2FS_MOUNT_INLINE_XATTR 0x00000080
83#define F2FS_MOUNT_INLINE_DATA 0x00000100
84#define F2FS_MOUNT_INLINE_DENTRY 0x00000200
85#define F2FS_MOUNT_FLUSH_MERGE 0x00000400
86#define F2FS_MOUNT_NOBARRIER 0x00000800
87#define F2FS_MOUNT_FASTBOOT 0x00001000
88#define F2FS_MOUNT_EXTENT_CACHE 0x00002000
89#define F2FS_MOUNT_FORCE_FG_GC 0x00004000
90#define F2FS_MOUNT_DATA_FLUSH 0x00008000
91#define F2FS_MOUNT_FAULT_INJECTION 0x00010000
92#define F2FS_MOUNT_ADAPTIVE 0x00020000
93#define F2FS_MOUNT_LFS 0x00040000
94#define F2FS_MOUNT_USRQUOTA 0x00080000
95#define F2FS_MOUNT_GRPQUOTA 0x00100000
96#define F2FS_MOUNT_PRJQUOTA 0x00200000
97#define F2FS_MOUNT_QUOTA 0x00400000
98#define F2FS_MOUNT_INLINE_XATTR_SIZE 0x00800000
99#define F2FS_MOUNT_RESERVE_ROOT 0x01000000
100
101#define F2FS_OPTION(sbi) ((sbi)->mount_opt)
102#define clear_opt(sbi, option) (F2FS_OPTION(sbi).opt &= ~F2FS_MOUNT_##option)
103#define set_opt(sbi, option) (F2FS_OPTION(sbi).opt |= F2FS_MOUNT_##option)
104#define test_opt(sbi, option) (F2FS_OPTION(sbi).opt & F2FS_MOUNT_##option)
105
106#define ver_after(a, b) (typecheck(unsigned long long, a) && \
107 typecheck(unsigned long long, b) && \
108 ((long long)((a) - (b)) > 0))
109
110typedef u32 block_t; /*
111 * should not change u32, since it is the on-disk block
112 * address format, __le32.
113 */
114typedef u32 nid_t;
115
116struct f2fs_mount_info {
117 unsigned int opt;
118 int write_io_size_bits; /* Write IO size bits */
119 block_t root_reserved_blocks; /* root reserved blocks */
120 kuid_t s_resuid; /* reserved blocks for uid */
121 kgid_t s_resgid; /* reserved blocks for gid */
122 int active_logs; /* # of active logs */
123 int inline_xattr_size; /* inline xattr size */
124#ifdef CONFIG_F2FS_FAULT_INJECTION
125 struct f2fs_fault_info fault_info; /* For fault injection */
126#endif
127#ifdef CONFIG_QUOTA
128 /* Names of quota files with journalled quota */
129 char *s_qf_names[MAXQUOTAS];
130 int s_jquota_fmt; /* Format of quota to use */
131#endif
132 /* For which write hints are passed down to block layer */
133 int whint_mode;
134 int alloc_mode; /* segment allocation policy */
135 int fsync_mode; /* fsync policy */
136 bool test_dummy_encryption; /* test dummy encryption */
137};
138
139#define F2FS_FEATURE_ENCRYPT 0x0001
140#define F2FS_FEATURE_BLKZONED 0x0002
141#define F2FS_FEATURE_ATOMIC_WRITE 0x0004
142#define F2FS_FEATURE_EXTRA_ATTR 0x0008
143#define F2FS_FEATURE_PRJQUOTA 0x0010
144#define F2FS_FEATURE_INODE_CHKSUM 0x0020
145#define F2FS_FEATURE_FLEXIBLE_INLINE_XATTR 0x0040
146#define F2FS_FEATURE_QUOTA_INO 0x0080
147#define F2FS_FEATURE_INODE_CRTIME 0x0100
148#define F2FS_FEATURE_LOST_FOUND 0x0200
149#define F2FS_FEATURE_VERITY 0x0400 /* reserved */
150
151#define F2FS_HAS_FEATURE(sb, mask) \
152 ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
153#define F2FS_SET_FEATURE(sb, mask) \
154 (F2FS_SB(sb)->raw_super->feature |= cpu_to_le32(mask))
155#define F2FS_CLEAR_FEATURE(sb, mask) \
156 (F2FS_SB(sb)->raw_super->feature &= ~cpu_to_le32(mask))
157
158/*
159 * Default values for user and/or group using reserved blocks
160 */
161#define F2FS_DEF_RESUID 0
162#define F2FS_DEF_RESGID 0
163
164/*
165 * For checkpoint manager
166 */
167enum {
168 NAT_BITMAP,
169 SIT_BITMAP
170};
171
172#define CP_UMOUNT 0x00000001
173#define CP_FASTBOOT 0x00000002
174#define CP_SYNC 0x00000004
175#define CP_RECOVERY 0x00000008
176#define CP_DISCARD 0x00000010
177#define CP_TRIMMED 0x00000020
178
179#define DEF_BATCHED_TRIM_SECTIONS 2048
180#define BATCHED_TRIM_SEGMENTS(sbi) \
181 (GET_SEG_FROM_SEC(sbi, SM_I(sbi)->trim_sections))
182#define BATCHED_TRIM_BLOCKS(sbi) \
183 (BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg)
184#define MAX_DISCARD_BLOCKS(sbi) BLKS_PER_SEC(sbi)
185#define DEF_MAX_DISCARD_REQUEST 8 /* issue 8 discards per round */
186#define DEF_MIN_DISCARD_ISSUE_TIME 50 /* 50 ms, if exists */
187#define DEF_MAX_DISCARD_ISSUE_TIME 60000 /* 60 s, if no candidates */
188#define DEF_CP_INTERVAL 60 /* 60 secs */
189#define DEF_IDLE_INTERVAL 5 /* 5 secs */
190
191struct cp_control {
192 int reason;
193 __u64 trim_start;
194 __u64 trim_end;
195 __u64 trim_minlen;
196};
197
198/*
199 * For CP/NAT/SIT/SSA readahead
200 */
201enum {
202 META_CP,
203 META_NAT,
204 META_SIT,
205 META_SSA,
206 META_POR,
207};
208
209/* for the list of ino */
210enum {
211 ORPHAN_INO, /* for orphan ino list */
212 APPEND_INO, /* for append ino list */
213 UPDATE_INO, /* for update ino list */
214 TRANS_DIR_INO, /* for trasactions dir ino list */
215 FLUSH_INO, /* for multiple device flushing */
216 MAX_INO_ENTRY, /* max. list */
217};
218
219struct ino_entry {
220 struct list_head list; /* list head */
221 nid_t ino; /* inode number */
222 unsigned int dirty_device; /* dirty device bitmap */
223};
224
225/* for the list of inodes to be GCed */
226struct inode_entry {
227 struct list_head list; /* list head */
228 struct inode *inode; /* vfs inode pointer */
229};
230
231/* for the bitmap indicate blocks to be discarded */
232struct discard_entry {
233 struct list_head list; /* list head */
234 block_t start_blkaddr; /* start blockaddr of current segment */
235 unsigned char discard_map[SIT_VBLOCK_MAP_SIZE]; /* segment discard bitmap */
236};
237
238/* default discard granularity of inner discard thread, unit: block count */
239#define DEFAULT_DISCARD_GRANULARITY 16
240
241/* max discard pend list number */
242#define MAX_PLIST_NUM 512
243#define plist_idx(blk_num) ((blk_num) >= MAX_PLIST_NUM ? \
244 (MAX_PLIST_NUM - 1) : (blk_num - 1))
245
246enum {
247 D_PREP,
248 D_SUBMIT,
249 D_DONE,
250};
251
252struct discard_info {
253 block_t lstart; /* logical start address */
254 block_t len; /* length */
255 block_t start; /* actual start address in dev */
256};
257
258struct discard_cmd {
259 struct rb_node rb_node; /* rb node located in rb-tree */
260 union {
261 struct {
262 block_t lstart; /* logical start address */
263 block_t len; /* length */
264 block_t start; /* actual start address in dev */
265 };
266 struct discard_info di; /* discard info */
267
268 };
269 struct list_head list; /* command list */
270 struct completion wait; /* compleation */
271 struct block_device *bdev; /* bdev */
272 unsigned short ref; /* reference count */
273 unsigned char state; /* state */
274 int error; /* bio error */
275};
276
277enum {
278 DPOLICY_BG,
279 DPOLICY_FORCE,
280 DPOLICY_FSTRIM,
281 DPOLICY_UMOUNT,
282 MAX_DPOLICY,
283};
284
285struct discard_policy {
286 int type; /* type of discard */
287 unsigned int min_interval; /* used for candidates exist */
288 unsigned int max_interval; /* used for candidates not exist */
289 unsigned int max_requests; /* # of discards issued per round */
290 unsigned int io_aware_gran; /* minimum granularity discard not be aware of I/O */
291 bool io_aware; /* issue discard in idle time */
292 bool sync; /* submit discard with REQ_SYNC flag */
293 unsigned int granularity; /* discard granularity */
294};
295
296struct discard_cmd_control {
297 struct task_struct *f2fs_issue_discard; /* discard thread */
298 struct list_head entry_list; /* 4KB discard entry list */
299 struct list_head pend_list[MAX_PLIST_NUM];/* store pending entries */
300 struct list_head wait_list; /* store on-flushing entries */
301 struct list_head fstrim_list; /* in-flight discard from fstrim */
302 wait_queue_head_t discard_wait_queue; /* waiting queue for wake-up */
303 unsigned int discard_wake; /* to wake up discard thread */
304 struct mutex cmd_lock;
305 unsigned int nr_discards; /* # of discards in the list */
306 unsigned int max_discards; /* max. discards to be issued */
307 unsigned int discard_granularity; /* discard granularity */
308 unsigned int undiscard_blks; /* # of undiscard blocks */
309 atomic_t issued_discard; /* # of issued discard */
310 atomic_t issing_discard; /* # of issing discard */
311 atomic_t discard_cmd_cnt; /* # of cached cmd count */
312 struct rb_root root; /* root of discard rb-tree */
313};
314
315/* for the list of fsync inodes, used only during recovery */
316struct fsync_inode_entry {
317 struct list_head list; /* list head */
318 struct inode *inode; /* vfs inode pointer */
319 block_t blkaddr; /* block address locating the last fsync */
320 block_t last_dentry; /* block address locating the last dentry */
321};
322
323#define nats_in_cursum(jnl) (le16_to_cpu((jnl)->n_nats))
324#define sits_in_cursum(jnl) (le16_to_cpu((jnl)->n_sits))
325
326#define nat_in_journal(jnl, i) ((jnl)->nat_j.entries[i].ne)
327#define nid_in_journal(jnl, i) ((jnl)->nat_j.entries[i].nid)
328#define sit_in_journal(jnl, i) ((jnl)->sit_j.entries[i].se)
329#define segno_in_journal(jnl, i) ((jnl)->sit_j.entries[i].segno)
330
331#define MAX_NAT_JENTRIES(jnl) (NAT_JOURNAL_ENTRIES - nats_in_cursum(jnl))
332#define MAX_SIT_JENTRIES(jnl) (SIT_JOURNAL_ENTRIES - sits_in_cursum(jnl))
333
334static inline int update_nats_in_cursum(struct f2fs_journal *journal, int i)
335{
336 int before = nats_in_cursum(journal);
337
338 journal->n_nats = cpu_to_le16(before + i);
339 return before;
340}
341
342static inline int update_sits_in_cursum(struct f2fs_journal *journal, int i)
343{
344 int before = sits_in_cursum(journal);
345
346 journal->n_sits = cpu_to_le16(before + i);
347 return before;
348}
349
350static inline bool __has_cursum_space(struct f2fs_journal *journal,
351 int size, int type)
352{
353 if (type == NAT_JOURNAL)
354 return size <= MAX_NAT_JENTRIES(journal);
355 return size <= MAX_SIT_JENTRIES(journal);
356}
357
358/*
359 * ioctl commands
360 */
361#define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
362#define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
363#define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
364
365#define F2FS_IOCTL_MAGIC 0xf5
366#define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
367#define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
368#define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
369#define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
370#define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
371#define F2FS_IOC_GARBAGE_COLLECT _IOW(F2FS_IOCTL_MAGIC, 6, __u32)
372#define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7)
373#define F2FS_IOC_DEFRAGMENT _IOWR(F2FS_IOCTL_MAGIC, 8, \
374 struct f2fs_defragment)
375#define F2FS_IOC_MOVE_RANGE _IOWR(F2FS_IOCTL_MAGIC, 9, \
376 struct f2fs_move_range)
377#define F2FS_IOC_FLUSH_DEVICE _IOW(F2FS_IOCTL_MAGIC, 10, \
378 struct f2fs_flush_device)
379#define F2FS_IOC_GARBAGE_COLLECT_RANGE _IOW(F2FS_IOCTL_MAGIC, 11, \
380 struct f2fs_gc_range)
381#define F2FS_IOC_GET_FEATURES _IOR(F2FS_IOCTL_MAGIC, 12, __u32)
382#define F2FS_IOC_SET_PIN_FILE _IOW(F2FS_IOCTL_MAGIC, 13, __u32)
383#define F2FS_IOC_GET_PIN_FILE _IOR(F2FS_IOCTL_MAGIC, 14, __u32)
384#define F2FS_IOC_PRECACHE_EXTENTS _IO(F2FS_IOCTL_MAGIC, 15)
385
386#define F2FS_IOC_SET_ENCRYPTION_POLICY FS_IOC_SET_ENCRYPTION_POLICY
387#define F2FS_IOC_GET_ENCRYPTION_POLICY FS_IOC_GET_ENCRYPTION_POLICY
388#define F2FS_IOC_GET_ENCRYPTION_PWSALT FS_IOC_GET_ENCRYPTION_PWSALT
389
390/*
391 * should be same as XFS_IOC_GOINGDOWN.
392 * Flags for going down operation used by FS_IOC_GOINGDOWN
393 */
394#define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
395#define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
396#define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
397#define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
398#define F2FS_GOING_DOWN_METAFLUSH 0x3 /* going down with meta flush */
399
400#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
401/*
402 * ioctl commands in 32 bit emulation
403 */
404#define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
405#define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
406#define F2FS_IOC32_GETVERSION FS_IOC32_GETVERSION
407#endif
408
409#define F2FS_IOC_FSGETXATTR FS_IOC_FSGETXATTR
410#define F2FS_IOC_FSSETXATTR FS_IOC_FSSETXATTR
411
412struct f2fs_gc_range {
413 u32 sync;
414 u64 start;
415 u64 len;
416};
417
418struct f2fs_defragment {
419 u64 start;
420 u64 len;
421};
422
423struct f2fs_move_range {
424 u32 dst_fd; /* destination fd */
425 u64 pos_in; /* start position in src_fd */
426 u64 pos_out; /* start position in dst_fd */
427 u64 len; /* size to move */
428};
429
430struct f2fs_flush_device {
431 u32 dev_num; /* device number to flush */
432 u32 segments; /* # of segments to flush */
433};
434
435/* for inline stuff */
436#define DEF_INLINE_RESERVED_SIZE 1
437#define DEF_MIN_INLINE_SIZE 1
438static inline int get_extra_isize(struct inode *inode);
439static inline int get_inline_xattr_addrs(struct inode *inode);
440#define MAX_INLINE_DATA(inode) (sizeof(__le32) * \
441 (CUR_ADDRS_PER_INODE(inode) - \
442 get_inline_xattr_addrs(inode) - \
443 DEF_INLINE_RESERVED_SIZE))
444
445/* for inline dir */
446#define NR_INLINE_DENTRY(inode) (MAX_INLINE_DATA(inode) * BITS_PER_BYTE / \
447 ((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \
448 BITS_PER_BYTE + 1))
449#define INLINE_DENTRY_BITMAP_SIZE(inode) ((NR_INLINE_DENTRY(inode) + \
450 BITS_PER_BYTE - 1) / BITS_PER_BYTE)
451#define INLINE_RESERVED_SIZE(inode) (MAX_INLINE_DATA(inode) - \
452 ((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \
453 NR_INLINE_DENTRY(inode) + \
454 INLINE_DENTRY_BITMAP_SIZE(inode)))
455
456/*
457 * For INODE and NODE manager
458 */
459/* for directory operations */
460struct f2fs_dentry_ptr {
461 struct inode *inode;
462 void *bitmap;
463 struct f2fs_dir_entry *dentry;
464 __u8 (*filename)[F2FS_SLOT_LEN];
465 int max;
466 int nr_bitmap;
467};
468
469static inline void make_dentry_ptr_block(struct inode *inode,
470 struct f2fs_dentry_ptr *d, struct f2fs_dentry_block *t)
471{
472 d->inode = inode;
473 d->max = NR_DENTRY_IN_BLOCK;
474 d->nr_bitmap = SIZE_OF_DENTRY_BITMAP;
475 d->bitmap = t->dentry_bitmap;
476 d->dentry = t->dentry;
477 d->filename = t->filename;
478}
479
480static inline void make_dentry_ptr_inline(struct inode *inode,
481 struct f2fs_dentry_ptr *d, void *t)
482{
483 int entry_cnt = NR_INLINE_DENTRY(inode);
484 int bitmap_size = INLINE_DENTRY_BITMAP_SIZE(inode);
485 int reserved_size = INLINE_RESERVED_SIZE(inode);
486
487 d->inode = inode;
488 d->max = entry_cnt;
489 d->nr_bitmap = bitmap_size;
490 d->bitmap = t;
491 d->dentry = t + bitmap_size + reserved_size;
492 d->filename = t + bitmap_size + reserved_size +
493 SIZE_OF_DIR_ENTRY * entry_cnt;
494}
495
496/*
497 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
498 * as its node offset to distinguish from index node blocks.
499 * But some bits are used to mark the node block.
500 */
501#define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
502 >> OFFSET_BIT_SHIFT)
503enum {
504 ALLOC_NODE, /* allocate a new node page if needed */
505 LOOKUP_NODE, /* look up a node without readahead */
506 LOOKUP_NODE_RA, /*
507 * look up a node with readahead called
508 * by get_data_block.
509 */
510};
511
512#define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */
513
514#define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
515
516/* vector size for gang look-up from extent cache that consists of radix tree */
517#define EXT_TREE_VEC_SIZE 64
518
519/* for in-memory extent cache entry */
520#define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
521
522/* number of extent info in extent cache we try to shrink */
523#define EXTENT_CACHE_SHRINK_NUMBER 128
524
525struct rb_entry {
526 struct rb_node rb_node; /* rb node located in rb-tree */
527 unsigned int ofs; /* start offset of the entry */
528 unsigned int len; /* length of the entry */
529};
530
531struct extent_info {
532 unsigned int fofs; /* start offset in a file */
533 unsigned int len; /* length of the extent */
534 u32 blk; /* start block address of the extent */
535};
536
537struct extent_node {
538 struct rb_node rb_node;
539 union {
540 struct {
541 unsigned int fofs;
542 unsigned int len;
543 u32 blk;
544 };
545 struct extent_info ei; /* extent info */
546
547 };
548 struct list_head list; /* node in global extent list of sbi */
549 struct extent_tree *et; /* extent tree pointer */
550};
551
552struct extent_tree {
553 nid_t ino; /* inode number */
554 struct rb_root root; /* root of extent info rb-tree */
555 struct extent_node *cached_en; /* recently accessed extent node */
556 struct extent_info largest; /* largested extent info */
557 struct list_head list; /* to be used by sbi->zombie_list */
558 rwlock_t lock; /* protect extent info rb-tree */
559 atomic_t node_cnt; /* # of extent node in rb-tree*/
560};
561
562/*
563 * This structure is taken from ext4_map_blocks.
564 *
565 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
566 */
567#define F2FS_MAP_NEW (1 << BH_New)
568#define F2FS_MAP_MAPPED (1 << BH_Mapped)
569#define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten)
570#define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
571 F2FS_MAP_UNWRITTEN)
572
573struct f2fs_map_blocks {
574 block_t m_pblk;
575 block_t m_lblk;
576 unsigned int m_len;
577 unsigned int m_flags;
578 pgoff_t *m_next_pgofs; /* point next possible non-hole pgofs */
579 pgoff_t *m_next_extent; /* point to next possible extent */
580 int m_seg_type;
581};
582
583/* for flag in get_data_block */
584enum {
585 F2FS_GET_BLOCK_DEFAULT,
586 F2FS_GET_BLOCK_FIEMAP,
587 F2FS_GET_BLOCK_BMAP,
588 F2FS_GET_BLOCK_PRE_DIO,
589 F2FS_GET_BLOCK_PRE_AIO,
590 F2FS_GET_BLOCK_PRECACHE,
591};
592
593/*
594 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
595 */
596#define FADVISE_COLD_BIT 0x01
597#define FADVISE_LOST_PINO_BIT 0x02
598#define FADVISE_ENCRYPT_BIT 0x04
599#define FADVISE_ENC_NAME_BIT 0x08
600#define FADVISE_KEEP_SIZE_BIT 0x10
601#define FADVISE_HOT_BIT 0x20
602#define FADVISE_VERITY_BIT 0x40 /* reserved */
603
604#define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
605#define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
606#define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
607#define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
608#define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
609#define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
610#define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
611#define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
612#define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
613#define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
614#define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
615#define file_keep_isize(inode) is_file(inode, FADVISE_KEEP_SIZE_BIT)
616#define file_set_keep_isize(inode) set_file(inode, FADVISE_KEEP_SIZE_BIT)
617#define file_is_hot(inode) is_file(inode, FADVISE_HOT_BIT)
618#define file_set_hot(inode) set_file(inode, FADVISE_HOT_BIT)
619#define file_clear_hot(inode) clear_file(inode, FADVISE_HOT_BIT)
620
621#define DEF_DIR_LEVEL 0
622
623struct f2fs_inode_info {
624 struct inode vfs_inode; /* serve a vfs inode */
625 unsigned long i_flags; /* keep an inode flags for ioctl */
626 unsigned char i_advise; /* use to give file attribute hints */
627 unsigned char i_dir_level; /* use for dentry level for large dir */
628 union {
629 unsigned int i_current_depth; /* only for directory depth */
630 unsigned short i_gc_failures; /* only for regular file */
631 };
632 unsigned int i_pino; /* parent inode number */
633 umode_t i_acl_mode; /* keep file acl mode temporarily */
634
635 /* Use below internally in f2fs*/
636 unsigned long flags; /* use to pass per-file flags */
637 struct rw_semaphore i_sem; /* protect fi info */
638 atomic_t dirty_pages; /* # of dirty pages */
639 f2fs_hash_t chash; /* hash value of given file name */
640 unsigned int clevel; /* maximum level of given file name */
641 struct task_struct *task; /* lookup and create consistency */
642 struct task_struct *cp_task; /* separate cp/wb IO stats*/
643 nid_t i_xattr_nid; /* node id that contains xattrs */
644 loff_t last_disk_size; /* lastly written file size */
645
646#ifdef CONFIG_QUOTA
647 struct dquot *i_dquot[MAXQUOTAS];
648
649 /* quota space reservation, managed internally by quota code */
650 qsize_t i_reserved_quota;
651#endif
652 struct list_head dirty_list; /* dirty list for dirs and files */
653 struct list_head gdirty_list; /* linked in global dirty list */
654 struct list_head inmem_ilist; /* list for inmem inodes */
655 struct list_head inmem_pages; /* inmemory pages managed by f2fs */
656 struct task_struct *inmem_task; /* store inmemory task */
657 struct mutex inmem_lock; /* lock for inmemory pages */
658 struct extent_tree *extent_tree; /* cached extent_tree entry */
659 struct rw_semaphore dio_rwsem[2];/* avoid racing between dio and gc */
660 struct rw_semaphore i_mmap_sem;
661 struct rw_semaphore i_xattr_sem; /* avoid racing between reading and changing EAs */
662
663 int i_extra_isize; /* size of extra space located in i_addr */
664 kprojid_t i_projid; /* id for project quota */
665 int i_inline_xattr_size; /* inline xattr size */
666 struct timespec i_crtime; /* inode creation time */
667 struct timespec i_disk_time[4]; /* inode disk times */
668};
669
670static inline void get_extent_info(struct extent_info *ext,
671 struct f2fs_extent *i_ext)
672{
673 ext->fofs = le32_to_cpu(i_ext->fofs);
674 ext->blk = le32_to_cpu(i_ext->blk);
675 ext->len = le32_to_cpu(i_ext->len);
676}
677
678static inline void set_raw_extent(struct extent_info *ext,
679 struct f2fs_extent *i_ext)
680{
681 i_ext->fofs = cpu_to_le32(ext->fofs);
682 i_ext->blk = cpu_to_le32(ext->blk);
683 i_ext->len = cpu_to_le32(ext->len);
684}
685
686static inline void set_extent_info(struct extent_info *ei, unsigned int fofs,
687 u32 blk, unsigned int len)
688{
689 ei->fofs = fofs;
690 ei->blk = blk;
691 ei->len = len;
692}
693
694static inline bool __is_discard_mergeable(struct discard_info *back,
695 struct discard_info *front)
696{
697 return back->lstart + back->len == front->lstart;
698}
699
700static inline bool __is_discard_back_mergeable(struct discard_info *cur,
701 struct discard_info *back)
702{
703 return __is_discard_mergeable(back, cur);
704}
705
706static inline bool __is_discard_front_mergeable(struct discard_info *cur,
707 struct discard_info *front)
708{
709 return __is_discard_mergeable(cur, front);
710}
711
712static inline bool __is_extent_mergeable(struct extent_info *back,
713 struct extent_info *front)
714{
715 return (back->fofs + back->len == front->fofs &&
716 back->blk + back->len == front->blk);
717}
718
719static inline bool __is_back_mergeable(struct extent_info *cur,
720 struct extent_info *back)
721{
722 return __is_extent_mergeable(back, cur);
723}
724
725static inline bool __is_front_mergeable(struct extent_info *cur,
726 struct extent_info *front)
727{
728 return __is_extent_mergeable(cur, front);
729}
730
731extern void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync);
732static inline void __try_update_largest_extent(struct inode *inode,
733 struct extent_tree *et, struct extent_node *en)
734{
735 if (en->ei.len > et->largest.len) {
736 et->largest = en->ei;
737 f2fs_mark_inode_dirty_sync(inode, true);
738 }
739}
740
741/*
742 * For free nid management
743 */
744enum nid_state {
745 FREE_NID, /* newly added to free nid list */
746 PREALLOC_NID, /* it is preallocated */
747 MAX_NID_STATE,
748};
749
750struct f2fs_nm_info {
751 block_t nat_blkaddr; /* base disk address of NAT */
752 nid_t max_nid; /* maximum possible node ids */
753 nid_t available_nids; /* # of available node ids */
754 nid_t next_scan_nid; /* the next nid to be scanned */
755 unsigned int ram_thresh; /* control the memory footprint */
756 unsigned int ra_nid_pages; /* # of nid pages to be readaheaded */
757 unsigned int dirty_nats_ratio; /* control dirty nats ratio threshold */
758
759 /* NAT cache management */
760 struct radix_tree_root nat_root;/* root of the nat entry cache */
761 struct radix_tree_root nat_set_root;/* root of the nat set cache */
762 struct rw_semaphore nat_tree_lock; /* protect nat_tree_lock */
763 struct list_head nat_entries; /* cached nat entry list (clean) */
764 unsigned int nat_cnt; /* the # of cached nat entries */
765 unsigned int dirty_nat_cnt; /* total num of nat entries in set */
766 unsigned int nat_blocks; /* # of nat blocks */
767
768 /* free node ids management */
769 struct radix_tree_root free_nid_root;/* root of the free_nid cache */
770 struct list_head free_nid_list; /* list for free nids excluding preallocated nids */
771 unsigned int nid_cnt[MAX_NID_STATE]; /* the number of free node id */
772 spinlock_t nid_list_lock; /* protect nid lists ops */
773 struct mutex build_lock; /* lock for build free nids */
774 unsigned char **free_nid_bitmap;
775 unsigned char *nat_block_bitmap;
776 unsigned short *free_nid_count; /* free nid count of NAT block */
777
778 /* for checkpoint */
779 char *nat_bitmap; /* NAT bitmap pointer */
780
781 unsigned int nat_bits_blocks; /* # of nat bits blocks */
782 unsigned char *nat_bits; /* NAT bits blocks */
783 unsigned char *full_nat_bits; /* full NAT pages */
784 unsigned char *empty_nat_bits; /* empty NAT pages */
785#ifdef CONFIG_F2FS_CHECK_FS
786 char *nat_bitmap_mir; /* NAT bitmap mirror */
787#endif
788 int bitmap_size; /* bitmap size */
789};
790
791/*
792 * this structure is used as one of function parameters.
793 * all the information are dedicated to a given direct node block determined
794 * by the data offset in a file.
795 */
796struct dnode_of_data {
797 struct inode *inode; /* vfs inode pointer */
798 struct page *inode_page; /* its inode page, NULL is possible */
799 struct page *node_page; /* cached direct node page */
800 nid_t nid; /* node id of the direct node block */
801 unsigned int ofs_in_node; /* data offset in the node page */
802 bool inode_page_locked; /* inode page is locked or not */
803 bool node_changed; /* is node block changed */
804 char cur_level; /* level of hole node page */
805 char max_level; /* level of current page located */
806 block_t data_blkaddr; /* block address of the node block */
807};
808
809static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
810 struct page *ipage, struct page *npage, nid_t nid)
811{
812 memset(dn, 0, sizeof(*dn));
813 dn->inode = inode;
814 dn->inode_page = ipage;
815 dn->node_page = npage;
816 dn->nid = nid;
817}
818
819/*
820 * For SIT manager
821 *
822 * By default, there are 6 active log areas across the whole main area.
823 * When considering hot and cold data separation to reduce cleaning overhead,
824 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
825 * respectively.
826 * In the current design, you should not change the numbers intentionally.
827 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
828 * logs individually according to the underlying devices. (default: 6)
829 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
830 * data and 8 for node logs.
831 */
832#define NR_CURSEG_DATA_TYPE (3)
833#define NR_CURSEG_NODE_TYPE (3)
834#define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
835
836enum {
837 CURSEG_HOT_DATA = 0, /* directory entry blocks */
838 CURSEG_WARM_DATA, /* data blocks */
839 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
840 CURSEG_HOT_NODE, /* direct node blocks of directory files */
841 CURSEG_WARM_NODE, /* direct node blocks of normal files */
842 CURSEG_COLD_NODE, /* indirect node blocks */
843 NO_CHECK_TYPE,
844};
845
846struct flush_cmd {
847 struct completion wait;
848 struct llist_node llnode;
849 nid_t ino;
850 int ret;
851};
852
853struct flush_cmd_control {
854 struct task_struct *f2fs_issue_flush; /* flush thread */
855 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
856 atomic_t issued_flush; /* # of issued flushes */
857 atomic_t issing_flush; /* # of issing flushes */
858 struct llist_head issue_list; /* list for command issue */
859 struct llist_node *dispatch_list; /* list for command dispatch */
860};
861
862struct f2fs_sm_info {
863 struct sit_info *sit_info; /* whole segment information */
864 struct free_segmap_info *free_info; /* free segment information */
865 struct dirty_seglist_info *dirty_info; /* dirty segment information */
866 struct curseg_info *curseg_array; /* active segment information */
867
868 struct rw_semaphore curseg_lock; /* for preventing curseg change */
869
870 block_t seg0_blkaddr; /* block address of 0'th segment */
871 block_t main_blkaddr; /* start block address of main area */
872 block_t ssa_blkaddr; /* start block address of SSA area */
873
874 unsigned int segment_count; /* total # of segments */
875 unsigned int main_segments; /* # of segments in main area */
876 unsigned int reserved_segments; /* # of reserved segments */
877 unsigned int ovp_segments; /* # of overprovision segments */
878
879 /* a threshold to reclaim prefree segments */
880 unsigned int rec_prefree_segments;
881
882 /* for batched trimming */
883 unsigned int trim_sections; /* # of sections to trim */
884
885 struct list_head sit_entry_set; /* sit entry set list */
886
887 unsigned int ipu_policy; /* in-place-update policy */
888 unsigned int min_ipu_util; /* in-place-update threshold */
889 unsigned int min_fsync_blocks; /* threshold for fsync */
890 unsigned int min_hot_blocks; /* threshold for hot block allocation */
891 unsigned int min_ssr_sections; /* threshold to trigger SSR allocation */
892
893 /* for flush command control */
894 struct flush_cmd_control *fcc_info;
895
896 /* for discard command control */
897 struct discard_cmd_control *dcc_info;
898};
899
900/*
901 * For superblock
902 */
903/*
904 * COUNT_TYPE for monitoring
905 *
906 * f2fs monitors the number of several block types such as on-writeback,
907 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
908 */
909#define WB_DATA_TYPE(p) (__is_cp_guaranteed(p) ? F2FS_WB_CP_DATA : F2FS_WB_DATA)
910enum count_type {
911 F2FS_DIRTY_DENTS,
912 F2FS_DIRTY_DATA,
913 F2FS_DIRTY_QDATA,
914 F2FS_DIRTY_NODES,
915 F2FS_DIRTY_META,
916 F2FS_INMEM_PAGES,
917 F2FS_DIRTY_IMETA,
918 F2FS_WB_CP_DATA,
919 F2FS_WB_DATA,
920 NR_COUNT_TYPE,
921};
922
923/*
924 * The below are the page types of bios used in submit_bio().
925 * The available types are:
926 * DATA User data pages. It operates as async mode.
927 * NODE Node pages. It operates as async mode.
928 * META FS metadata pages such as SIT, NAT, CP.
929 * NR_PAGE_TYPE The number of page types.
930 * META_FLUSH Make sure the previous pages are written
931 * with waiting the bio's completion
932 * ... Only can be used with META.
933 */
934#define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
935enum page_type {
936 DATA,
937 NODE,
938 META,
939 NR_PAGE_TYPE,
940 META_FLUSH,
941 INMEM, /* the below types are used by tracepoints only. */
942 INMEM_DROP,
943 INMEM_INVALIDATE,
944 INMEM_REVOKE,
945 IPU,
946 OPU,
947};
948
949enum temp_type {
950 HOT = 0, /* must be zero for meta bio */
951 WARM,
952 COLD,
953 NR_TEMP_TYPE,
954};
955
956enum need_lock_type {
957 LOCK_REQ = 0,
958 LOCK_DONE,
959 LOCK_RETRY,
960};
961
962enum cp_reason_type {
963 CP_NO_NEEDED,
964 CP_NON_REGULAR,
965 CP_HARDLINK,
966 CP_SB_NEED_CP,
967 CP_WRONG_PINO,
968 CP_NO_SPC_ROLL,
969 CP_NODE_NEED_CP,
970 CP_FASTBOOT_MODE,
971 CP_SPEC_LOG_NUM,
972 CP_RECOVER_DIR,
973};
974
975enum iostat_type {
976 APP_DIRECT_IO, /* app direct IOs */
977 APP_BUFFERED_IO, /* app buffered IOs */
978 APP_WRITE_IO, /* app write IOs */
979 APP_MAPPED_IO, /* app mapped IOs */
980 FS_DATA_IO, /* data IOs from kworker/fsync/reclaimer */
981 FS_NODE_IO, /* node IOs from kworker/fsync/reclaimer */
982 FS_META_IO, /* meta IOs from kworker/reclaimer */
983 FS_GC_DATA_IO, /* data IOs from forground gc */
984 FS_GC_NODE_IO, /* node IOs from forground gc */
985 FS_CP_DATA_IO, /* data IOs from checkpoint */
986 FS_CP_NODE_IO, /* node IOs from checkpoint */
987 FS_CP_META_IO, /* meta IOs from checkpoint */
988 FS_DISCARD, /* discard */
989 NR_IO_TYPE,
990};
991
992struct f2fs_io_info {
993 struct f2fs_sb_info *sbi; /* f2fs_sb_info pointer */
994 nid_t ino; /* inode number */
995 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
996 enum temp_type temp; /* contains HOT/WARM/COLD */
997 int op; /* contains REQ_OP_ */
998 int op_flags; /* req_flag_bits */
999 block_t new_blkaddr; /* new block address to be written */
1000 block_t old_blkaddr; /* old block address before Cow */
1001 struct page *page; /* page to be written */
1002 struct page *encrypted_page; /* encrypted page */
1003 struct list_head list; /* serialize IOs */
1004 bool submitted; /* indicate IO submission */
1005 int need_lock; /* indicate we need to lock cp_rwsem */
1006 bool in_list; /* indicate fio is in io_list */
1007 bool is_meta; /* indicate borrow meta inode mapping or not */
1008 enum iostat_type io_type; /* io type */
1009 struct writeback_control *io_wbc; /* writeback control */
1010};
1011
1012#define is_read_io(rw) ((rw) == READ)
1013struct f2fs_bio_info {
1014 struct f2fs_sb_info *sbi; /* f2fs superblock */
1015 struct bio *bio; /* bios to merge */
1016 sector_t last_block_in_bio; /* last block number */
1017 struct f2fs_io_info fio; /* store buffered io info. */
1018 struct rw_semaphore io_rwsem; /* blocking op for bio */
1019 spinlock_t io_lock; /* serialize DATA/NODE IOs */
1020 struct list_head io_list; /* track fios */
1021};
1022
1023#define FDEV(i) (sbi->devs[i])
1024#define RDEV(i) (raw_super->devs[i])
1025struct f2fs_dev_info {
1026 struct block_device *bdev;
1027 char path[MAX_PATH_LEN];
1028 unsigned int total_segments;
1029 block_t start_blk;
1030 block_t end_blk;
1031#ifdef CONFIG_BLK_DEV_ZONED
1032 unsigned int nr_blkz; /* Total number of zones */
1033 u8 *blkz_type; /* Array of zones type */
1034#endif
1035};
1036
1037enum inode_type {
1038 DIR_INODE, /* for dirty dir inode */
1039 FILE_INODE, /* for dirty regular/symlink inode */
1040 DIRTY_META, /* for all dirtied inode metadata */
1041 ATOMIC_FILE, /* for all atomic files */
1042 NR_INODE_TYPE,
1043};
1044
1045/* for inner inode cache management */
1046struct inode_management {
1047 struct radix_tree_root ino_root; /* ino entry array */
1048 spinlock_t ino_lock; /* for ino entry lock */
1049 struct list_head ino_list; /* inode list head */
1050 unsigned long ino_num; /* number of entries */
1051};
1052
1053/* For s_flag in struct f2fs_sb_info */
1054enum {
1055 SBI_IS_DIRTY, /* dirty flag for checkpoint */
1056 SBI_IS_CLOSE, /* specify unmounting */
1057 SBI_NEED_FSCK, /* need fsck.f2fs to fix */
1058 SBI_POR_DOING, /* recovery is doing or not */
1059 SBI_NEED_SB_WRITE, /* need to recover superblock */
1060 SBI_NEED_CP, /* need to checkpoint */
1061};
1062
1063enum {
1064 CP_TIME,
1065 REQ_TIME,
1066 MAX_TIME,
1067};
1068
1069enum {
1070 WHINT_MODE_OFF, /* not pass down write hints */
1071 WHINT_MODE_USER, /* try to pass down hints given by users */
1072 WHINT_MODE_FS, /* pass down hints with F2FS policy */
1073};
1074
1075enum {
1076 ALLOC_MODE_DEFAULT, /* stay default */
1077 ALLOC_MODE_REUSE, /* reuse segments as much as possible */
1078};
1079
1080enum fsync_mode {
1081 FSYNC_MODE_POSIX, /* fsync follows posix semantics */
1082 FSYNC_MODE_STRICT, /* fsync behaves in line with ext4 */
1083};
1084
1085#ifdef CONFIG_F2FS_FS_ENCRYPTION
1086#define DUMMY_ENCRYPTION_ENABLED(sbi) \
1087 (unlikely(F2FS_OPTION(sbi).test_dummy_encryption))
1088#else
1089#define DUMMY_ENCRYPTION_ENABLED(sbi) (0)
1090#endif
1091
1092struct f2fs_sb_info {
1093 struct super_block *sb; /* pointer to VFS super block */
1094 struct proc_dir_entry *s_proc; /* proc entry */
1095 struct f2fs_super_block *raw_super; /* raw super block pointer */
1096 struct rw_semaphore sb_lock; /* lock for raw super block */
1097 int valid_super_block; /* valid super block no */
1098 unsigned long s_flag; /* flags for sbi */
1099
1100#ifdef CONFIG_BLK_DEV_ZONED
1101 unsigned int blocks_per_blkz; /* F2FS blocks per zone */
1102 unsigned int log_blocks_per_blkz; /* log2 F2FS blocks per zone */
1103#endif
1104
1105 /* for node-related operations */
1106 struct f2fs_nm_info *nm_info; /* node manager */
1107 struct inode *node_inode; /* cache node blocks */
1108
1109 /* for segment-related operations */
1110 struct f2fs_sm_info *sm_info; /* segment manager */
1111
1112 /* for bio operations */
1113 struct f2fs_bio_info *write_io[NR_PAGE_TYPE]; /* for write bios */
1114 struct mutex wio_mutex[NR_PAGE_TYPE - 1][NR_TEMP_TYPE];
1115 /* bio ordering for NODE/DATA */
1116 mempool_t *write_io_dummy; /* Dummy pages */
1117
1118 /* for checkpoint */
1119 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
1120 int cur_cp_pack; /* remain current cp pack */
1121 spinlock_t cp_lock; /* for flag in ckpt */
1122 struct inode *meta_inode; /* cache meta blocks */
1123 struct mutex cp_mutex; /* checkpoint procedure lock */
1124 struct rw_semaphore cp_rwsem; /* blocking FS operations */
1125 struct rw_semaphore node_write; /* locking node writes */
1126 struct rw_semaphore node_change; /* locking node change */
1127 wait_queue_head_t cp_wait;
1128 unsigned long last_time[MAX_TIME]; /* to store time in jiffies */
1129 long interval_time[MAX_TIME]; /* to store thresholds */
1130
1131 struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */
1132
1133 /* for orphan inode, use 0'th array */
1134 unsigned int max_orphans; /* max orphan inodes */
1135
1136 /* for inode management */
1137 struct list_head inode_list[NR_INODE_TYPE]; /* dirty inode list */
1138 spinlock_t inode_lock[NR_INODE_TYPE]; /* for dirty inode list lock */
1139
1140 /* for extent tree cache */
1141 struct radix_tree_root extent_tree_root;/* cache extent cache entries */
1142 struct mutex extent_tree_lock; /* locking extent radix tree */
1143 struct list_head extent_list; /* lru list for shrinker */
1144 spinlock_t extent_lock; /* locking extent lru list */
1145 atomic_t total_ext_tree; /* extent tree count */
1146 struct list_head zombie_list; /* extent zombie tree list */
1147 atomic_t total_zombie_tree; /* extent zombie tree count */
1148 atomic_t total_ext_node; /* extent info count */
1149
1150 /* basic filesystem units */
1151 unsigned int log_sectors_per_block; /* log2 sectors per block */
1152 unsigned int log_blocksize; /* log2 block size */
1153 unsigned int blocksize; /* block size */
1154 unsigned int root_ino_num; /* root inode number*/
1155 unsigned int node_ino_num; /* node inode number*/
1156 unsigned int meta_ino_num; /* meta inode number*/
1157 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
1158 unsigned int blocks_per_seg; /* blocks per segment */
1159 unsigned int segs_per_sec; /* segments per section */
1160 unsigned int secs_per_zone; /* sections per zone */
1161 unsigned int total_sections; /* total section count */
1162 unsigned int total_node_count; /* total node block count */
1163 unsigned int total_valid_node_count; /* valid node block count */
1164 loff_t max_file_blocks; /* max block index of file */
1165 int dir_level; /* directory level */
1166 unsigned int trigger_ssr_threshold; /* threshold to trigger ssr */
1167 int readdir_ra; /* readahead inode in readdir */
1168
1169 block_t user_block_count; /* # of user blocks */
1170 block_t total_valid_block_count; /* # of valid blocks */
1171 block_t discard_blks; /* discard command candidats */
1172 block_t last_valid_block_count; /* for recovery */
1173 block_t reserved_blocks; /* configurable reserved blocks */
1174 block_t current_reserved_blocks; /* current reserved blocks */
1175
1176 unsigned int nquota_files; /* # of quota sysfile */
1177
1178 u32 s_next_generation; /* for NFS support */
1179
1180 /* # of pages, see count_type */
1181 atomic_t nr_pages[NR_COUNT_TYPE];
1182 /* # of allocated blocks */
1183 struct percpu_counter alloc_valid_block_count;
1184
1185 /* writeback control */
1186 atomic_t wb_sync_req; /* count # of WB_SYNC threads */
1187
1188 /* valid inode count */
1189 struct percpu_counter total_valid_inode_count;
1190
1191 struct f2fs_mount_info mount_opt; /* mount options */
1192
1193 /* for cleaning operations */
1194 struct mutex gc_mutex; /* mutex for GC */
1195 struct f2fs_gc_kthread *gc_thread; /* GC thread */
1196 unsigned int cur_victim_sec; /* current victim section num */
1197
1198 /* threshold for converting bg victims for fg */
1199 u64 fggc_threshold;
1200
1201 /* threshold for gc trials on pinned files */
1202 u64 gc_pin_file_threshold;
1203
1204 /* maximum # of trials to find a victim segment for SSR and GC */
1205 unsigned int max_victim_search;
1206
1207 /*
1208 * for stat information.
1209 * one is for the LFS mode, and the other is for the SSR mode.
1210 */
1211#ifdef CONFIG_F2FS_STAT_FS
1212 struct f2fs_stat_info *stat_info; /* FS status information */
1213 unsigned int segment_count[2]; /* # of allocated segments */
1214 unsigned int block_count[2]; /* # of allocated blocks */
1215 atomic_t inplace_count; /* # of inplace update */
1216 atomic64_t total_hit_ext; /* # of lookup extent cache */
1217 atomic64_t read_hit_rbtree; /* # of hit rbtree extent node */
1218 atomic64_t read_hit_largest; /* # of hit largest extent node */
1219 atomic64_t read_hit_cached; /* # of hit cached extent node */
1220 atomic_t inline_xattr; /* # of inline_xattr inodes */
1221 atomic_t inline_inode; /* # of inline_data inodes */
1222 atomic_t inline_dir; /* # of inline_dentry inodes */
1223 atomic_t aw_cnt; /* # of atomic writes */
1224 atomic_t vw_cnt; /* # of volatile writes */
1225 atomic_t max_aw_cnt; /* max # of atomic writes */
1226 atomic_t max_vw_cnt; /* max # of volatile writes */
1227 int bg_gc; /* background gc calls */
1228 unsigned int ndirty_inode[NR_INODE_TYPE]; /* # of dirty inodes */
1229#endif
1230 spinlock_t stat_lock; /* lock for stat operations */
1231
1232 /* For app/fs IO statistics */
1233 spinlock_t iostat_lock;
1234 unsigned long long write_iostat[NR_IO_TYPE];
1235 bool iostat_enable;
1236
1237 /* For sysfs suppport */
1238 struct kobject s_kobj;
1239 struct completion s_kobj_unregister;
1240
1241 /* For shrinker support */
1242 struct list_head s_list;
1243 int s_ndevs; /* number of devices */
1244 struct f2fs_dev_info *devs; /* for device list */
1245 unsigned int dirty_device; /* for checkpoint data flush */
1246 spinlock_t dev_lock; /* protect dirty_device */
1247 struct mutex umount_mutex;
1248 unsigned int shrinker_run_no;
1249
1250 /* For write statistics */
1251 u64 sectors_written_start;
1252 u64 kbytes_written;
1253
1254 /* Reference to checksum algorithm driver via cryptoapi */
1255 struct crypto_shash *s_chksum_driver;
1256
1257 /* Precomputed FS UUID checksum for seeding other checksums */
1258 __u32 s_chksum_seed;
1259};
1260
1261#ifdef CONFIG_F2FS_FAULT_INJECTION
1262#define f2fs_show_injection_info(type) \
1263 printk("%sF2FS-fs : inject %s in %s of %pF\n", \
1264 KERN_INFO, fault_name[type], \
1265 __func__, __builtin_return_address(0))
1266static inline bool time_to_inject(struct f2fs_sb_info *sbi, int type)
1267{
1268 struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info;
1269
1270 if (!ffi->inject_rate)
1271 return false;
1272
1273 if (!IS_FAULT_SET(ffi, type))
1274 return false;
1275
1276 atomic_inc(&ffi->inject_ops);
1277 if (atomic_read(&ffi->inject_ops) >= ffi->inject_rate) {
1278 atomic_set(&ffi->inject_ops, 0);
1279 return true;
1280 }
1281 return false;
1282}
1283#endif
1284
1285/* For write statistics. Suppose sector size is 512 bytes,
1286 * and the return value is in kbytes. s is of struct f2fs_sb_info.
1287 */
1288#define BD_PART_WRITTEN(s) \
1289(((u64)part_stat_read((s)->sb->s_bdev->bd_part, sectors[1]) - \
1290 (s)->sectors_written_start) >> 1)
1291
1292static inline void f2fs_update_time(struct f2fs_sb_info *sbi, int type)
1293{
1294 sbi->last_time[type] = jiffies;
1295}
1296
1297static inline bool f2fs_time_over(struct f2fs_sb_info *sbi, int type)
1298{
1299 unsigned long interval = sbi->interval_time[type] * HZ;
1300
1301 return time_after(jiffies, sbi->last_time[type] + interval);
1302}
1303
1304static inline bool is_idle(struct f2fs_sb_info *sbi)
1305{
1306 struct block_device *bdev = sbi->sb->s_bdev;
1307 struct request_queue *q = bdev_get_queue(bdev);
1308 struct request_list *rl = &q->root_rl;
1309
1310 if (rl->count[BLK_RW_SYNC] || rl->count[BLK_RW_ASYNC])
1311 return 0;
1312
1313 return f2fs_time_over(sbi, REQ_TIME);
1314}
1315
1316/*
1317 * Inline functions
1318 */
1319static inline u32 __f2fs_crc32(struct f2fs_sb_info *sbi, u32 crc,
1320 const void *address, unsigned int length)
1321{
1322 struct {
1323 struct shash_desc shash;
1324 char ctx[4];
1325 } desc;
1326 int err;
1327
1328 BUG_ON(crypto_shash_descsize(sbi->s_chksum_driver) != sizeof(desc.ctx));
1329
1330 desc.shash.tfm = sbi->s_chksum_driver;
1331 desc.shash.flags = 0;
1332 *(u32 *)desc.ctx = crc;
1333
1334 err = crypto_shash_update(&desc.shash, address, length);
1335 BUG_ON(err);
1336
1337 return *(u32 *)desc.ctx;
1338}
1339
1340static inline u32 f2fs_crc32(struct f2fs_sb_info *sbi, const void *address,
1341 unsigned int length)
1342{
1343 return __f2fs_crc32(sbi, F2FS_SUPER_MAGIC, address, length);
1344}
1345
1346static inline bool f2fs_crc_valid(struct f2fs_sb_info *sbi, __u32 blk_crc,
1347 void *buf, size_t buf_size)
1348{
1349 return f2fs_crc32(sbi, buf, buf_size) == blk_crc;
1350}
1351
1352static inline u32 f2fs_chksum(struct f2fs_sb_info *sbi, u32 crc,
1353 const void *address, unsigned int length)
1354{
1355 return __f2fs_crc32(sbi, crc, address, length);
1356}
1357
1358static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
1359{
1360 return container_of(inode, struct f2fs_inode_info, vfs_inode);
1361}
1362
1363static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
1364{
1365 return sb->s_fs_info;
1366}
1367
1368static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
1369{
1370 return F2FS_SB(inode->i_sb);
1371}
1372
1373static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
1374{
1375 return F2FS_I_SB(mapping->host);
1376}
1377
1378static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
1379{
1380 return F2FS_M_SB(page->mapping);
1381}
1382
1383static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
1384{
1385 return (struct f2fs_super_block *)(sbi->raw_super);
1386}
1387
1388static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
1389{
1390 return (struct f2fs_checkpoint *)(sbi->ckpt);
1391}
1392
1393static inline struct f2fs_node *F2FS_NODE(struct page *page)
1394{
1395 return (struct f2fs_node *)page_address(page);
1396}
1397
1398static inline struct f2fs_inode *F2FS_INODE(struct page *page)
1399{
1400 return &((struct f2fs_node *)page_address(page))->i;
1401}
1402
1403static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
1404{
1405 return (struct f2fs_nm_info *)(sbi->nm_info);
1406}
1407
1408static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
1409{
1410 return (struct f2fs_sm_info *)(sbi->sm_info);
1411}
1412
1413static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
1414{
1415 return (struct sit_info *)(SM_I(sbi)->sit_info);
1416}
1417
1418static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
1419{
1420 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
1421}
1422
1423static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
1424{
1425 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
1426}
1427
1428static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
1429{
1430 return sbi->meta_inode->i_mapping;
1431}
1432
1433static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
1434{
1435 return sbi->node_inode->i_mapping;
1436}
1437
1438static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
1439{
1440 return test_bit(type, &sbi->s_flag);
1441}
1442
1443static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
1444{
1445 set_bit(type, &sbi->s_flag);
1446}
1447
1448static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
1449{
1450 clear_bit(type, &sbi->s_flag);
1451}
1452
1453static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
1454{
1455 return le64_to_cpu(cp->checkpoint_ver);
1456}
1457
1458static inline unsigned long f2fs_qf_ino(struct super_block *sb, int type)
1459{
1460 if (type < F2FS_MAX_QUOTAS)
1461 return le32_to_cpu(F2FS_SB(sb)->raw_super->qf_ino[type]);
1462 return 0;
1463}
1464
1465static inline __u64 cur_cp_crc(struct f2fs_checkpoint *cp)
1466{
1467 size_t crc_offset = le32_to_cpu(cp->checksum_offset);
1468 return le32_to_cpu(*((__le32 *)((unsigned char *)cp + crc_offset)));
1469}
1470
1471static inline bool __is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1472{
1473 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1474
1475 return ckpt_flags & f;
1476}
1477
1478static inline bool is_set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1479{
1480 return __is_set_ckpt_flags(F2FS_CKPT(sbi), f);
1481}
1482
1483static inline void __set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1484{
1485 unsigned int ckpt_flags;
1486
1487 ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1488 ckpt_flags |= f;
1489 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1490}
1491
1492static inline void set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1493{
1494 unsigned long flags;
1495
1496 spin_lock_irqsave(&sbi->cp_lock, flags);
1497 __set_ckpt_flags(F2FS_CKPT(sbi), f);
1498 spin_unlock_irqrestore(&sbi->cp_lock, flags);
1499}
1500
1501static inline void __clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1502{
1503 unsigned int ckpt_flags;
1504
1505 ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1506 ckpt_flags &= (~f);
1507 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1508}
1509
1510static inline void clear_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1511{
1512 unsigned long flags;
1513
1514 spin_lock_irqsave(&sbi->cp_lock, flags);
1515 __clear_ckpt_flags(F2FS_CKPT(sbi), f);
1516 spin_unlock_irqrestore(&sbi->cp_lock, flags);
1517}
1518
1519static inline void disable_nat_bits(struct f2fs_sb_info *sbi, bool lock)
1520{
1521 unsigned long flags;
1522
1523 set_sbi_flag(sbi, SBI_NEED_FSCK);
1524
1525 if (lock)
1526 spin_lock_irqsave(&sbi->cp_lock, flags);
1527 __clear_ckpt_flags(F2FS_CKPT(sbi), CP_NAT_BITS_FLAG);
1528 kfree(NM_I(sbi)->nat_bits);
1529 NM_I(sbi)->nat_bits = NULL;
1530 if (lock)
1531 spin_unlock_irqrestore(&sbi->cp_lock, flags);
1532}
1533
1534static inline bool enabled_nat_bits(struct f2fs_sb_info *sbi,
1535 struct cp_control *cpc)
1536{
1537 bool set = is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG);
1538
1539 return (cpc) ? (cpc->reason & CP_UMOUNT) && set : set;
1540}
1541
1542static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
1543{
1544 down_read(&sbi->cp_rwsem);
1545}
1546
1547static inline int f2fs_trylock_op(struct f2fs_sb_info *sbi)
1548{
1549 return down_read_trylock(&sbi->cp_rwsem);
1550}
1551
1552static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
1553{
1554 up_read(&sbi->cp_rwsem);
1555}
1556
1557static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
1558{
1559 down_write(&sbi->cp_rwsem);
1560}
1561
1562static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
1563{
1564 up_write(&sbi->cp_rwsem);
1565}
1566
1567static inline int __get_cp_reason(struct f2fs_sb_info *sbi)
1568{
1569 int reason = CP_SYNC;
1570
1571 if (test_opt(sbi, FASTBOOT))
1572 reason = CP_FASTBOOT;
1573 if (is_sbi_flag_set(sbi, SBI_IS_CLOSE))
1574 reason = CP_UMOUNT;
1575 return reason;
1576}
1577
1578static inline bool __remain_node_summaries(int reason)
1579{
1580 return (reason & (CP_UMOUNT | CP_FASTBOOT));
1581}
1582
1583static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
1584{
1585 return (is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG) ||
1586 is_set_ckpt_flags(sbi, CP_FASTBOOT_FLAG));
1587}
1588
1589/*
1590 * Check whether the given nid is within node id range.
1591 */
1592static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
1593{
1594 if (unlikely(nid < F2FS_ROOT_INO(sbi)))
1595 return -EINVAL;
1596 if (unlikely(nid >= NM_I(sbi)->max_nid))
1597 return -EINVAL;
1598 return 0;
1599}
1600
1601/*
1602 * Check whether the inode has blocks or not
1603 */
1604static inline int F2FS_HAS_BLOCKS(struct inode *inode)
1605{
1606 block_t xattr_block = F2FS_I(inode)->i_xattr_nid ? 1 : 0;
1607
1608 return (inode->i_blocks >> F2FS_LOG_SECTORS_PER_BLOCK) > xattr_block;
1609}
1610
1611static inline bool f2fs_has_xattr_block(unsigned int ofs)
1612{
1613 return ofs == XATTR_NODE_OFFSET;
1614}
1615
1616static inline bool __allow_reserved_blocks(struct f2fs_sb_info *sbi,
1617 struct inode *inode)
1618{
1619 if (!inode)
1620 return true;
1621 if (!test_opt(sbi, RESERVE_ROOT))
1622 return false;
1623 if (IS_NOQUOTA(inode))
1624 return true;
1625 if (uid_eq(F2FS_OPTION(sbi).s_resuid, current_fsuid()))
1626 return true;
1627 if (!gid_eq(F2FS_OPTION(sbi).s_resgid, GLOBAL_ROOT_GID) &&
1628 in_group_p(F2FS_OPTION(sbi).s_resgid))
1629 return true;
1630 if (capable(CAP_SYS_RESOURCE))
1631 return true;
1632 return false;
1633}
1634
1635static inline void f2fs_i_blocks_write(struct inode *, block_t, bool, bool);
1636static inline int inc_valid_block_count(struct f2fs_sb_info *sbi,
1637 struct inode *inode, blkcnt_t *count)
1638{
1639 blkcnt_t diff = 0, release = 0;
1640 block_t avail_user_block_count;
1641 int ret;
1642
1643 ret = dquot_reserve_block(inode, *count);
1644 if (ret)
1645 return ret;
1646
1647#ifdef CONFIG_F2FS_FAULT_INJECTION
1648 if (time_to_inject(sbi, FAULT_BLOCK)) {
1649 f2fs_show_injection_info(FAULT_BLOCK);
1650 release = *count;
1651 goto enospc;
1652 }
1653#endif
1654 /*
1655 * let's increase this in prior to actual block count change in order
1656 * for f2fs_sync_file to avoid data races when deciding checkpoint.
1657 */
1658 percpu_counter_add(&sbi->alloc_valid_block_count, (*count));
1659
1660 spin_lock(&sbi->stat_lock);
1661 sbi->total_valid_block_count += (block_t)(*count);
1662 avail_user_block_count = sbi->user_block_count -
1663 sbi->current_reserved_blocks;
1664
1665 if (!__allow_reserved_blocks(sbi, inode))
1666 avail_user_block_count -= F2FS_OPTION(sbi).root_reserved_blocks;
1667
1668 if (unlikely(sbi->total_valid_block_count > avail_user_block_count)) {
1669 diff = sbi->total_valid_block_count - avail_user_block_count;
1670 if (diff > *count)
1671 diff = *count;
1672 *count -= diff;
1673 release = diff;
1674 sbi->total_valid_block_count -= diff;
1675 if (!*count) {
1676 spin_unlock(&sbi->stat_lock);
1677 percpu_counter_sub(&sbi->alloc_valid_block_count, diff);
1678 goto enospc;
1679 }
1680 }
1681 spin_unlock(&sbi->stat_lock);
1682
1683 if (unlikely(release))
1684 dquot_release_reservation_block(inode, release);
1685 f2fs_i_blocks_write(inode, *count, true, true);
1686 return 0;
1687
1688enospc:
1689 dquot_release_reservation_block(inode, release);
1690 return -ENOSPC;
1691}
1692
1693static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
1694 struct inode *inode,
1695 block_t count)
1696{
1697 blkcnt_t sectors = count << F2FS_LOG_SECTORS_PER_BLOCK;
1698
1699 spin_lock(&sbi->stat_lock);
1700 f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
1701 f2fs_bug_on(sbi, inode->i_blocks < sectors);
1702 sbi->total_valid_block_count -= (block_t)count;
1703 if (sbi->reserved_blocks &&
1704 sbi->current_reserved_blocks < sbi->reserved_blocks)
1705 sbi->current_reserved_blocks = min(sbi->reserved_blocks,
1706 sbi->current_reserved_blocks + count);
1707 spin_unlock(&sbi->stat_lock);
1708 f2fs_i_blocks_write(inode, count, false, true);
1709}
1710
1711static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
1712{
1713 atomic_inc(&sbi->nr_pages[count_type]);
1714
1715 if (count_type == F2FS_DIRTY_DATA || count_type == F2FS_INMEM_PAGES ||
1716 count_type == F2FS_WB_CP_DATA || count_type == F2FS_WB_DATA)
1717 return;
1718
1719 set_sbi_flag(sbi, SBI_IS_DIRTY);
1720}
1721
1722static inline void inode_inc_dirty_pages(struct inode *inode)
1723{
1724 atomic_inc(&F2FS_I(inode)->dirty_pages);
1725 inc_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
1726 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
1727 if (IS_NOQUOTA(inode))
1728 inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_QDATA);
1729}
1730
1731static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
1732{
1733 atomic_dec(&sbi->nr_pages[count_type]);
1734}
1735
1736static inline void inode_dec_dirty_pages(struct inode *inode)
1737{
1738 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
1739 !S_ISLNK(inode->i_mode))
1740 return;
1741
1742 atomic_dec(&F2FS_I(inode)->dirty_pages);
1743 dec_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
1744 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
1745 if (IS_NOQUOTA(inode))
1746 dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_QDATA);
1747}
1748
1749static inline s64 get_pages(struct f2fs_sb_info *sbi, int count_type)
1750{
1751 return atomic_read(&sbi->nr_pages[count_type]);
1752}
1753
1754static inline int get_dirty_pages(struct inode *inode)
1755{
1756 return atomic_read(&F2FS_I(inode)->dirty_pages);
1757}
1758
1759static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
1760{
1761 unsigned int pages_per_sec = sbi->segs_per_sec * sbi->blocks_per_seg;
1762 unsigned int segs = (get_pages(sbi, block_type) + pages_per_sec - 1) >>
1763 sbi->log_blocks_per_seg;
1764
1765 return segs / sbi->segs_per_sec;
1766}
1767
1768static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
1769{
1770 return sbi->total_valid_block_count;
1771}
1772
1773static inline block_t discard_blocks(struct f2fs_sb_info *sbi)
1774{
1775 return sbi->discard_blks;
1776}
1777
1778static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
1779{
1780 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1781
1782 /* return NAT or SIT bitmap */
1783 if (flag == NAT_BITMAP)
1784 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
1785 else if (flag == SIT_BITMAP)
1786 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
1787
1788 return 0;
1789}
1790
1791static inline block_t __cp_payload(struct f2fs_sb_info *sbi)
1792{
1793 return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
1794}
1795
1796static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
1797{
1798 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1799 int offset;
1800
1801 if (is_set_ckpt_flags(sbi, CP_LARGE_NAT_BITMAP_FLAG)) {
1802 offset = (flag == SIT_BITMAP) ?
1803 le32_to_cpu(ckpt->nat_ver_bitmap_bytesize) : 0;
1804 return &ckpt->sit_nat_version_bitmap + offset;
1805 }
1806
1807 if (__cp_payload(sbi) > 0) {
1808 if (flag == NAT_BITMAP)
1809 return &ckpt->sit_nat_version_bitmap;
1810 else
1811 return (unsigned char *)ckpt + F2FS_BLKSIZE;
1812 } else {
1813 offset = (flag == NAT_BITMAP) ?
1814 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
1815 return &ckpt->sit_nat_version_bitmap + offset;
1816 }
1817}
1818
1819static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
1820{
1821 block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
1822
1823 if (sbi->cur_cp_pack == 2)
1824 start_addr += sbi->blocks_per_seg;
1825 return start_addr;
1826}
1827
1828static inline block_t __start_cp_next_addr(struct f2fs_sb_info *sbi)
1829{
1830 block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
1831
1832 if (sbi->cur_cp_pack == 1)
1833 start_addr += sbi->blocks_per_seg;
1834 return start_addr;
1835}
1836
1837static inline void __set_cp_next_pack(struct f2fs_sb_info *sbi)
1838{
1839 sbi->cur_cp_pack = (sbi->cur_cp_pack == 1) ? 2 : 1;
1840}
1841
1842static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
1843{
1844 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
1845}
1846
1847static inline int inc_valid_node_count(struct f2fs_sb_info *sbi,
1848 struct inode *inode, bool is_inode)
1849{
1850 block_t valid_block_count;
1851 unsigned int valid_node_count;
1852 bool quota = inode && !is_inode;
1853
1854 if (quota) {
1855 int ret = dquot_reserve_block(inode, 1);
1856 if (ret)
1857 return ret;
1858 }
1859
1860#ifdef CONFIG_F2FS_FAULT_INJECTION
1861 if (time_to_inject(sbi, FAULT_BLOCK)) {
1862 f2fs_show_injection_info(FAULT_BLOCK);
1863 goto enospc;
1864 }
1865#endif
1866
1867 spin_lock(&sbi->stat_lock);
1868
1869 valid_block_count = sbi->total_valid_block_count +
1870 sbi->current_reserved_blocks + 1;
1871
1872 if (!__allow_reserved_blocks(sbi, inode))
1873 valid_block_count += F2FS_OPTION(sbi).root_reserved_blocks;
1874
1875 if (unlikely(valid_block_count > sbi->user_block_count)) {
1876 spin_unlock(&sbi->stat_lock);
1877 goto enospc;
1878 }
1879
1880 valid_node_count = sbi->total_valid_node_count + 1;
1881 if (unlikely(valid_node_count > sbi->total_node_count)) {
1882 spin_unlock(&sbi->stat_lock);
1883 goto enospc;
1884 }
1885
1886 sbi->total_valid_node_count++;
1887 sbi->total_valid_block_count++;
1888 spin_unlock(&sbi->stat_lock);
1889
1890 if (inode) {
1891 if (is_inode)
1892 f2fs_mark_inode_dirty_sync(inode, true);
1893 else
1894 f2fs_i_blocks_write(inode, 1, true, true);
1895 }
1896
1897 percpu_counter_inc(&sbi->alloc_valid_block_count);
1898 return 0;
1899
1900enospc:
1901 if (quota)
1902 dquot_release_reservation_block(inode, 1);
1903 return -ENOSPC;
1904}
1905
1906static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
1907 struct inode *inode, bool is_inode)
1908{
1909 spin_lock(&sbi->stat_lock);
1910
1911 f2fs_bug_on(sbi, !sbi->total_valid_block_count);
1912 f2fs_bug_on(sbi, !sbi->total_valid_node_count);
1913 f2fs_bug_on(sbi, !is_inode && !inode->i_blocks);
1914
1915 sbi->total_valid_node_count--;
1916 sbi->total_valid_block_count--;
1917 if (sbi->reserved_blocks &&
1918 sbi->current_reserved_blocks < sbi->reserved_blocks)
1919 sbi->current_reserved_blocks++;
1920
1921 spin_unlock(&sbi->stat_lock);
1922
1923 if (!is_inode)
1924 f2fs_i_blocks_write(inode, 1, false, true);
1925}
1926
1927static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
1928{
1929 return sbi->total_valid_node_count;
1930}
1931
1932static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
1933{
1934 percpu_counter_inc(&sbi->total_valid_inode_count);
1935}
1936
1937static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
1938{
1939 percpu_counter_dec(&sbi->total_valid_inode_count);
1940}
1941
1942static inline s64 valid_inode_count(struct f2fs_sb_info *sbi)
1943{
1944 return percpu_counter_sum_positive(&sbi->total_valid_inode_count);
1945}
1946
1947static inline struct page *f2fs_grab_cache_page(struct address_space *mapping,
1948 pgoff_t index, bool for_write)
1949{
1950#ifdef CONFIG_F2FS_FAULT_INJECTION
1951 struct page *page = find_lock_page(mapping, index);
1952
1953 if (page)
1954 return page;
1955
1956 if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_ALLOC)) {
1957 f2fs_show_injection_info(FAULT_PAGE_ALLOC);
1958 return NULL;
1959 }
1960#endif
1961 if (!for_write)
1962 return grab_cache_page(mapping, index);
1963 return grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS);
1964}
1965
1966static inline struct page *f2fs_pagecache_get_page(
1967 struct address_space *mapping, pgoff_t index,
1968 int fgp_flags, gfp_t gfp_mask)
1969{
1970#ifdef CONFIG_F2FS_FAULT_INJECTION
1971 if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_GET)) {
1972 f2fs_show_injection_info(FAULT_PAGE_GET);
1973 return NULL;
1974 }
1975#endif
1976 return pagecache_get_page(mapping, index, fgp_flags, gfp_mask);
1977}
1978
1979static inline void f2fs_copy_page(struct page *src, struct page *dst)
1980{
1981 char *src_kaddr = kmap(src);
1982 char *dst_kaddr = kmap(dst);
1983
1984 memcpy(dst_kaddr, src_kaddr, PAGE_SIZE);
1985 kunmap(dst);
1986 kunmap(src);
1987}
1988
1989static inline void f2fs_put_page(struct page *page, int unlock)
1990{
1991 if (!page)
1992 return;
1993
1994 if (unlock) {
1995 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
1996 unlock_page(page);
1997 }
1998 put_page(page);
1999}
2000
2001static inline void f2fs_put_dnode(struct dnode_of_data *dn)
2002{
2003 if (dn->node_page)
2004 f2fs_put_page(dn->node_page, 1);
2005 if (dn->inode_page && dn->node_page != dn->inode_page)
2006 f2fs_put_page(dn->inode_page, 0);
2007 dn->node_page = NULL;
2008 dn->inode_page = NULL;
2009}
2010
2011static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
2012 size_t size)
2013{
2014 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
2015}
2016
2017static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
2018 gfp_t flags)
2019{
2020 void *entry;
2021
2022 entry = kmem_cache_alloc(cachep, flags);
2023 if (!entry)
2024 entry = kmem_cache_alloc(cachep, flags | __GFP_NOFAIL);
2025 return entry;
2026}
2027
2028static inline struct bio *f2fs_bio_alloc(struct f2fs_sb_info *sbi,
2029 int npages, bool no_fail)
2030{
2031 struct bio *bio;
2032
2033 if (no_fail) {
2034 /* No failure on bio allocation */
2035 bio = bio_alloc(GFP_NOIO, npages);
2036 if (!bio)
2037 bio = bio_alloc(GFP_NOIO | __GFP_NOFAIL, npages);
2038 return bio;
2039 }
2040#ifdef CONFIG_F2FS_FAULT_INJECTION
2041 if (time_to_inject(sbi, FAULT_ALLOC_BIO)) {
2042 f2fs_show_injection_info(FAULT_ALLOC_BIO);
2043 return NULL;
2044 }
2045#endif
2046 return bio_alloc(GFP_KERNEL, npages);
2047}
2048
2049static inline void f2fs_radix_tree_insert(struct radix_tree_root *root,
2050 unsigned long index, void *item)
2051{
2052 while (radix_tree_insert(root, index, item))
2053 cond_resched();
2054}
2055
2056#define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
2057
2058static inline bool IS_INODE(struct page *page)
2059{
2060 struct f2fs_node *p = F2FS_NODE(page);
2061
2062 return RAW_IS_INODE(p);
2063}
2064
2065static inline int offset_in_addr(struct f2fs_inode *i)
2066{
2067 return (i->i_inline & F2FS_EXTRA_ATTR) ?
2068 (le16_to_cpu(i->i_extra_isize) / sizeof(__le32)) : 0;
2069}
2070
2071static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
2072{
2073 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
2074}
2075
2076static inline int f2fs_has_extra_attr(struct inode *inode);
2077static inline block_t datablock_addr(struct inode *inode,
2078 struct page *node_page, unsigned int offset)
2079{
2080 struct f2fs_node *raw_node;
2081 __le32 *addr_array;
2082 int base = 0;
2083 bool is_inode = IS_INODE(node_page);
2084
2085 raw_node = F2FS_NODE(node_page);
2086
2087 /* from GC path only */
2088 if (is_inode) {
2089 if (!inode)
2090 base = offset_in_addr(&raw_node->i);
2091 else if (f2fs_has_extra_attr(inode))
2092 base = get_extra_isize(inode);
2093 }
2094
2095 addr_array = blkaddr_in_node(raw_node);
2096 return le32_to_cpu(addr_array[base + offset]);
2097}
2098
2099static inline int f2fs_test_bit(unsigned int nr, char *addr)
2100{
2101 int mask;
2102
2103 addr += (nr >> 3);
2104 mask = 1 << (7 - (nr & 0x07));
2105 return mask & *addr;
2106}
2107
2108static inline void f2fs_set_bit(unsigned int nr, char *addr)
2109{
2110 int mask;
2111
2112 addr += (nr >> 3);
2113 mask = 1 << (7 - (nr & 0x07));
2114 *addr |= mask;
2115}
2116
2117static inline void f2fs_clear_bit(unsigned int nr, char *addr)
2118{
2119 int mask;
2120
2121 addr += (nr >> 3);
2122 mask = 1 << (7 - (nr & 0x07));
2123 *addr &= ~mask;
2124}
2125
2126static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
2127{
2128 int mask;
2129 int ret;
2130
2131 addr += (nr >> 3);
2132 mask = 1 << (7 - (nr & 0x07));
2133 ret = mask & *addr;
2134 *addr |= mask;
2135 return ret;
2136}
2137
2138static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
2139{
2140 int mask;
2141 int ret;
2142
2143 addr += (nr >> 3);
2144 mask = 1 << (7 - (nr & 0x07));
2145 ret = mask & *addr;
2146 *addr &= ~mask;
2147 return ret;
2148}
2149
2150static inline void f2fs_change_bit(unsigned int nr, char *addr)
2151{
2152 int mask;
2153
2154 addr += (nr >> 3);
2155 mask = 1 << (7 - (nr & 0x07));
2156 *addr ^= mask;
2157}
2158
2159#define F2FS_REG_FLMASK (~(FS_DIRSYNC_FL | FS_TOPDIR_FL))
2160#define F2FS_OTHER_FLMASK (FS_NODUMP_FL | FS_NOATIME_FL)
2161#define F2FS_FL_INHERITED (FS_PROJINHERIT_FL)
2162
2163static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags)
2164{
2165 if (S_ISDIR(mode))
2166 return flags;
2167 else if (S_ISREG(mode))
2168 return flags & F2FS_REG_FLMASK;
2169 else
2170 return flags & F2FS_OTHER_FLMASK;
2171}
2172
2173/* used for f2fs_inode_info->flags */
2174enum {
2175 FI_NEW_INODE, /* indicate newly allocated inode */
2176 FI_DIRTY_INODE, /* indicate inode is dirty or not */
2177 FI_AUTO_RECOVER, /* indicate inode is recoverable */
2178 FI_DIRTY_DIR, /* indicate directory has dirty pages */
2179 FI_INC_LINK, /* need to increment i_nlink */
2180 FI_ACL_MODE, /* indicate acl mode */
2181 FI_NO_ALLOC, /* should not allocate any blocks */
2182 FI_FREE_NID, /* free allocated nide */
2183 FI_NO_EXTENT, /* not to use the extent cache */
2184 FI_INLINE_XATTR, /* used for inline xattr */
2185 FI_INLINE_DATA, /* used for inline data*/
2186 FI_INLINE_DENTRY, /* used for inline dentry */
2187 FI_APPEND_WRITE, /* inode has appended data */
2188 FI_UPDATE_WRITE, /* inode has in-place-update data */
2189 FI_NEED_IPU, /* used for ipu per file */
2190 FI_ATOMIC_FILE, /* indicate atomic file */
2191 FI_ATOMIC_COMMIT, /* indicate the state of atomical committing */
2192 FI_VOLATILE_FILE, /* indicate volatile file */
2193 FI_FIRST_BLOCK_WRITTEN, /* indicate #0 data block was written */
2194 FI_DROP_CACHE, /* drop dirty page cache */
2195 FI_DATA_EXIST, /* indicate data exists */
2196 FI_INLINE_DOTS, /* indicate inline dot dentries */
2197 FI_DO_DEFRAG, /* indicate defragment is running */
2198 FI_DIRTY_FILE, /* indicate regular/symlink has dirty pages */
2199 FI_NO_PREALLOC, /* indicate skipped preallocated blocks */
2200 FI_HOT_DATA, /* indicate file is hot */
2201 FI_EXTRA_ATTR, /* indicate file has extra attribute */
2202 FI_PROJ_INHERIT, /* indicate file inherits projectid */
2203 FI_PIN_FILE, /* indicate file should not be gced */
2204};
2205
2206static inline void __mark_inode_dirty_flag(struct inode *inode,
2207 int flag, bool set)
2208{
2209 switch (flag) {
2210 case FI_INLINE_XATTR:
2211 case FI_INLINE_DATA:
2212 case FI_INLINE_DENTRY:
2213 case FI_NEW_INODE:
2214 if (set)
2215 return;
2216 case FI_DATA_EXIST:
2217 case FI_INLINE_DOTS:
2218 case FI_PIN_FILE:
2219 f2fs_mark_inode_dirty_sync(inode, true);
2220 }
2221}
2222
2223static inline void set_inode_flag(struct inode *inode, int flag)
2224{
2225 if (!test_bit(flag, &F2FS_I(inode)->flags))
2226 set_bit(flag, &F2FS_I(inode)->flags);
2227 __mark_inode_dirty_flag(inode, flag, true);
2228}
2229
2230static inline int is_inode_flag_set(struct inode *inode, int flag)
2231{
2232 return test_bit(flag, &F2FS_I(inode)->flags);
2233}
2234
2235static inline void clear_inode_flag(struct inode *inode, int flag)
2236{
2237 if (test_bit(flag, &F2FS_I(inode)->flags))
2238 clear_bit(flag, &F2FS_I(inode)->flags);
2239 __mark_inode_dirty_flag(inode, flag, false);
2240}
2241
2242static inline void set_acl_inode(struct inode *inode, umode_t mode)
2243{
2244 F2FS_I(inode)->i_acl_mode = mode;
2245 set_inode_flag(inode, FI_ACL_MODE);
2246 f2fs_mark_inode_dirty_sync(inode, false);
2247}
2248
2249static inline void f2fs_i_links_write(struct inode *inode, bool inc)
2250{
2251 if (inc)
2252 inc_nlink(inode);
2253 else
2254 drop_nlink(inode);
2255 f2fs_mark_inode_dirty_sync(inode, true);
2256}
2257
2258static inline void f2fs_i_blocks_write(struct inode *inode,
2259 block_t diff, bool add, bool claim)
2260{
2261 bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
2262 bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);
2263
2264 /* add = 1, claim = 1 should be dquot_reserve_block in pair */
2265 if (add) {
2266 if (claim)
2267 dquot_claim_block(inode, diff);
2268 else
2269 dquot_alloc_block_nofail(inode, diff);
2270 } else {
2271 dquot_free_block(inode, diff);
2272 }
2273
2274 f2fs_mark_inode_dirty_sync(inode, true);
2275 if (clean || recover)
2276 set_inode_flag(inode, FI_AUTO_RECOVER);
2277}
2278
2279static inline void f2fs_i_size_write(struct inode *inode, loff_t i_size)
2280{
2281 bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
2282 bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);
2283
2284 if (i_size_read(inode) == i_size)
2285 return;
2286
2287 i_size_write(inode, i_size);
2288 f2fs_mark_inode_dirty_sync(inode, true);
2289 if (clean || recover)
2290 set_inode_flag(inode, FI_AUTO_RECOVER);
2291}
2292
2293static inline void f2fs_i_depth_write(struct inode *inode, unsigned int depth)
2294{
2295 F2FS_I(inode)->i_current_depth = depth;
2296 f2fs_mark_inode_dirty_sync(inode, true);
2297}
2298
2299static inline void f2fs_i_gc_failures_write(struct inode *inode,
2300 unsigned int count)
2301{
2302 F2FS_I(inode)->i_gc_failures = count;
2303 f2fs_mark_inode_dirty_sync(inode, true);
2304}
2305
2306static inline void f2fs_i_xnid_write(struct inode *inode, nid_t xnid)
2307{
2308 F2FS_I(inode)->i_xattr_nid = xnid;
2309 f2fs_mark_inode_dirty_sync(inode, true);
2310}
2311
2312static inline void f2fs_i_pino_write(struct inode *inode, nid_t pino)
2313{
2314 F2FS_I(inode)->i_pino = pino;
2315 f2fs_mark_inode_dirty_sync(inode, true);
2316}
2317
2318static inline void get_inline_info(struct inode *inode, struct f2fs_inode *ri)
2319{
2320 struct f2fs_inode_info *fi = F2FS_I(inode);
2321
2322 if (ri->i_inline & F2FS_INLINE_XATTR)
2323 set_bit(FI_INLINE_XATTR, &fi->flags);
2324 if (ri->i_inline & F2FS_INLINE_DATA)
2325 set_bit(FI_INLINE_DATA, &fi->flags);
2326 if (ri->i_inline & F2FS_INLINE_DENTRY)
2327 set_bit(FI_INLINE_DENTRY, &fi->flags);
2328 if (ri->i_inline & F2FS_DATA_EXIST)
2329 set_bit(FI_DATA_EXIST, &fi->flags);
2330 if (ri->i_inline & F2FS_INLINE_DOTS)
2331 set_bit(FI_INLINE_DOTS, &fi->flags);
2332 if (ri->i_inline & F2FS_EXTRA_ATTR)
2333 set_bit(FI_EXTRA_ATTR, &fi->flags);
2334 if (ri->i_inline & F2FS_PIN_FILE)
2335 set_bit(FI_PIN_FILE, &fi->flags);
2336}
2337
2338static inline void set_raw_inline(struct inode *inode, struct f2fs_inode *ri)
2339{
2340 ri->i_inline = 0;
2341
2342 if (is_inode_flag_set(inode, FI_INLINE_XATTR))
2343 ri->i_inline |= F2FS_INLINE_XATTR;
2344 if (is_inode_flag_set(inode, FI_INLINE_DATA))
2345 ri->i_inline |= F2FS_INLINE_DATA;
2346 if (is_inode_flag_set(inode, FI_INLINE_DENTRY))
2347 ri->i_inline |= F2FS_INLINE_DENTRY;
2348 if (is_inode_flag_set(inode, FI_DATA_EXIST))
2349 ri->i_inline |= F2FS_DATA_EXIST;
2350 if (is_inode_flag_set(inode, FI_INLINE_DOTS))
2351 ri->i_inline |= F2FS_INLINE_DOTS;
2352 if (is_inode_flag_set(inode, FI_EXTRA_ATTR))
2353 ri->i_inline |= F2FS_EXTRA_ATTR;
2354 if (is_inode_flag_set(inode, FI_PIN_FILE))
2355 ri->i_inline |= F2FS_PIN_FILE;
2356}
2357
2358static inline int f2fs_has_extra_attr(struct inode *inode)
2359{
2360 return is_inode_flag_set(inode, FI_EXTRA_ATTR);
2361}
2362
2363static inline int f2fs_has_inline_xattr(struct inode *inode)
2364{
2365 return is_inode_flag_set(inode, FI_INLINE_XATTR);
2366}
2367
2368static inline unsigned int addrs_per_inode(struct inode *inode)
2369{
2370 return CUR_ADDRS_PER_INODE(inode) - get_inline_xattr_addrs(inode);
2371}
2372
2373static inline void *inline_xattr_addr(struct inode *inode, struct page *page)
2374{
2375 struct f2fs_inode *ri = F2FS_INODE(page);
2376
2377 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
2378 get_inline_xattr_addrs(inode)]);
2379}
2380
2381static inline int inline_xattr_size(struct inode *inode)
2382{
2383 return get_inline_xattr_addrs(inode) * sizeof(__le32);
2384}
2385
2386static inline int f2fs_has_inline_data(struct inode *inode)
2387{
2388 return is_inode_flag_set(inode, FI_INLINE_DATA);
2389}
2390
2391static inline int f2fs_exist_data(struct inode *inode)
2392{
2393 return is_inode_flag_set(inode, FI_DATA_EXIST);
2394}
2395
2396static inline int f2fs_has_inline_dots(struct inode *inode)
2397{
2398 return is_inode_flag_set(inode, FI_INLINE_DOTS);
2399}
2400
2401static inline bool f2fs_is_pinned_file(struct inode *inode)
2402{
2403 return is_inode_flag_set(inode, FI_PIN_FILE);
2404}
2405
2406static inline bool f2fs_is_atomic_file(struct inode *inode)
2407{
2408 return is_inode_flag_set(inode, FI_ATOMIC_FILE);
2409}
2410
2411static inline bool f2fs_is_commit_atomic_write(struct inode *inode)
2412{
2413 return is_inode_flag_set(inode, FI_ATOMIC_COMMIT);
2414}
2415
2416static inline bool f2fs_is_volatile_file(struct inode *inode)
2417{
2418 return is_inode_flag_set(inode, FI_VOLATILE_FILE);
2419}
2420
2421static inline bool f2fs_is_first_block_written(struct inode *inode)
2422{
2423 return is_inode_flag_set(inode, FI_FIRST_BLOCK_WRITTEN);
2424}
2425
2426static inline bool f2fs_is_drop_cache(struct inode *inode)
2427{
2428 return is_inode_flag_set(inode, FI_DROP_CACHE);
2429}
2430
2431static inline void *inline_data_addr(struct inode *inode, struct page *page)
2432{
2433 struct f2fs_inode *ri = F2FS_INODE(page);
2434 int extra_size = get_extra_isize(inode);
2435
2436 return (void *)&(ri->i_addr[extra_size + DEF_INLINE_RESERVED_SIZE]);
2437}
2438
2439static inline int f2fs_has_inline_dentry(struct inode *inode)
2440{
2441 return is_inode_flag_set(inode, FI_INLINE_DENTRY);
2442}
2443
2444static inline int is_file(struct inode *inode, int type)
2445{
2446 return F2FS_I(inode)->i_advise & type;
2447}
2448
2449static inline void set_file(struct inode *inode, int type)
2450{
2451 F2FS_I(inode)->i_advise |= type;
2452 f2fs_mark_inode_dirty_sync(inode, true);
2453}
2454
2455static inline void clear_file(struct inode *inode, int type)
2456{
2457 F2FS_I(inode)->i_advise &= ~type;
2458 f2fs_mark_inode_dirty_sync(inode, true);
2459}
2460
2461static inline bool f2fs_skip_inode_update(struct inode *inode, int dsync)
2462{
2463 bool ret;
2464
2465 if (dsync) {
2466 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2467
2468 spin_lock(&sbi->inode_lock[DIRTY_META]);
2469 ret = list_empty(&F2FS_I(inode)->gdirty_list);
2470 spin_unlock(&sbi->inode_lock[DIRTY_META]);
2471 return ret;
2472 }
2473 if (!is_inode_flag_set(inode, FI_AUTO_RECOVER) ||
2474 file_keep_isize(inode) ||
2475 i_size_read(inode) & ~PAGE_MASK)
2476 return false;
2477
2478 if (!timespec_equal(F2FS_I(inode)->i_disk_time, &inode->i_atime))
2479 return false;
2480 if (!timespec_equal(F2FS_I(inode)->i_disk_time + 1, &inode->i_ctime))
2481 return false;
2482 if (!timespec_equal(F2FS_I(inode)->i_disk_time + 2, &inode->i_mtime))
2483 return false;
2484 if (!timespec_equal(F2FS_I(inode)->i_disk_time + 3,
2485 &F2FS_I(inode)->i_crtime))
2486 return false;
2487
2488 down_read(&F2FS_I(inode)->i_sem);
2489 ret = F2FS_I(inode)->last_disk_size == i_size_read(inode);
2490 up_read(&F2FS_I(inode)->i_sem);
2491
2492 return ret;
2493}
2494
2495static inline bool f2fs_readonly(struct super_block *sb)
2496{
2497 return sb_rdonly(sb);
2498}
2499
2500static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
2501{
2502 return is_set_ckpt_flags(sbi, CP_ERROR_FLAG);
2503}
2504
2505static inline bool is_dot_dotdot(const struct qstr *str)
2506{
2507 if (str->len == 1 && str->name[0] == '.')
2508 return true;
2509
2510 if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.')
2511 return true;
2512
2513 return false;
2514}
2515
2516static inline bool f2fs_may_extent_tree(struct inode *inode)
2517{
2518 if (!test_opt(F2FS_I_SB(inode), EXTENT_CACHE) ||
2519 is_inode_flag_set(inode, FI_NO_EXTENT))
2520 return false;
2521
2522 return S_ISREG(inode->i_mode);
2523}
2524
2525static inline void *f2fs_kmalloc(struct f2fs_sb_info *sbi,
2526 size_t size, gfp_t flags)
2527{
2528#ifdef CONFIG_F2FS_FAULT_INJECTION
2529 if (time_to_inject(sbi, FAULT_KMALLOC)) {
2530 f2fs_show_injection_info(FAULT_KMALLOC);
2531 return NULL;
2532 }
2533#endif
2534 return kmalloc(size, flags);
2535}
2536
2537static inline void *f2fs_kzalloc(struct f2fs_sb_info *sbi,
2538 size_t size, gfp_t flags)
2539{
2540 return f2fs_kmalloc(sbi, size, flags | __GFP_ZERO);
2541}
2542
2543static inline void *f2fs_kvmalloc(struct f2fs_sb_info *sbi,
2544 size_t size, gfp_t flags)
2545{
2546#ifdef CONFIG_F2FS_FAULT_INJECTION
2547 if (time_to_inject(sbi, FAULT_KVMALLOC)) {
2548 f2fs_show_injection_info(FAULT_KVMALLOC);
2549 return NULL;
2550 }
2551#endif
2552 return kvmalloc(size, flags);
2553}
2554
2555static inline void *f2fs_kvzalloc(struct f2fs_sb_info *sbi,
2556 size_t size, gfp_t flags)
2557{
2558 return f2fs_kvmalloc(sbi, size, flags | __GFP_ZERO);
2559}
2560
2561static inline int get_extra_isize(struct inode *inode)
2562{
2563 return F2FS_I(inode)->i_extra_isize / sizeof(__le32);
2564}
2565
2566static inline int get_inline_xattr_addrs(struct inode *inode)
2567{
2568 return F2FS_I(inode)->i_inline_xattr_size;
2569}
2570
2571#define get_inode_mode(i) \
2572 ((is_inode_flag_set(i, FI_ACL_MODE)) ? \
2573 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
2574
2575#define F2FS_TOTAL_EXTRA_ATTR_SIZE \
2576 (offsetof(struct f2fs_inode, i_extra_end) - \
2577 offsetof(struct f2fs_inode, i_extra_isize)) \
2578
2579#define F2FS_OLD_ATTRIBUTE_SIZE (offsetof(struct f2fs_inode, i_addr))
2580#define F2FS_FITS_IN_INODE(f2fs_inode, extra_isize, field) \
2581 ((offsetof(typeof(*f2fs_inode), field) + \
2582 sizeof((f2fs_inode)->field)) \
2583 <= (F2FS_OLD_ATTRIBUTE_SIZE + extra_isize)) \
2584
2585static inline void f2fs_reset_iostat(struct f2fs_sb_info *sbi)
2586{
2587 int i;
2588
2589 spin_lock(&sbi->iostat_lock);
2590 for (i = 0; i < NR_IO_TYPE; i++)
2591 sbi->write_iostat[i] = 0;
2592 spin_unlock(&sbi->iostat_lock);
2593}
2594
2595static inline void f2fs_update_iostat(struct f2fs_sb_info *sbi,
2596 enum iostat_type type, unsigned long long io_bytes)
2597{
2598 if (!sbi->iostat_enable)
2599 return;
2600 spin_lock(&sbi->iostat_lock);
2601 sbi->write_iostat[type] += io_bytes;
2602
2603 if (type == APP_WRITE_IO || type == APP_DIRECT_IO)
2604 sbi->write_iostat[APP_BUFFERED_IO] =
2605 sbi->write_iostat[APP_WRITE_IO] -
2606 sbi->write_iostat[APP_DIRECT_IO];
2607 spin_unlock(&sbi->iostat_lock);
2608}
2609
2610/*
2611 * file.c
2612 */
2613int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync);
2614void truncate_data_blocks(struct dnode_of_data *dn);
2615int truncate_blocks(struct inode *inode, u64 from, bool lock);
2616int f2fs_truncate(struct inode *inode);
2617int f2fs_getattr(const struct path *path, struct kstat *stat,
2618 u32 request_mask, unsigned int flags);
2619int f2fs_setattr(struct dentry *dentry, struct iattr *attr);
2620int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end);
2621void truncate_data_blocks_range(struct dnode_of_data *dn, int count);
2622int f2fs_precache_extents(struct inode *inode);
2623long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
2624long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
2625int f2fs_pin_file_control(struct inode *inode, bool inc);
2626
2627/*
2628 * inode.c
2629 */
2630void f2fs_set_inode_flags(struct inode *inode);
2631bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page);
2632void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page);
2633struct inode *f2fs_iget(struct super_block *sb, unsigned long ino);
2634struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino);
2635int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink);
2636void update_inode(struct inode *inode, struct page *node_page);
2637void update_inode_page(struct inode *inode);
2638int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc);
2639void f2fs_evict_inode(struct inode *inode);
2640void handle_failed_inode(struct inode *inode);
2641
2642/*
2643 * namei.c
2644 */
2645int update_extension_list(struct f2fs_sb_info *sbi, const char *name,
2646 bool hot, bool set);
2647struct dentry *f2fs_get_parent(struct dentry *child);
2648
2649/*
2650 * dir.c
2651 */
2652void set_de_type(struct f2fs_dir_entry *de, umode_t mode);
2653unsigned char get_de_type(struct f2fs_dir_entry *de);
2654struct f2fs_dir_entry *find_target_dentry(struct fscrypt_name *fname,
2655 f2fs_hash_t namehash, int *max_slots,
2656 struct f2fs_dentry_ptr *d);
2657int f2fs_fill_dentries(struct dir_context *ctx, struct f2fs_dentry_ptr *d,
2658 unsigned int start_pos, struct fscrypt_str *fstr);
2659void do_make_empty_dir(struct inode *inode, struct inode *parent,
2660 struct f2fs_dentry_ptr *d);
2661struct page *init_inode_metadata(struct inode *inode, struct inode *dir,
2662 const struct qstr *new_name,
2663 const struct qstr *orig_name, struct page *dpage);
2664void update_parent_metadata(struct inode *dir, struct inode *inode,
2665 unsigned int current_depth);
2666int room_for_filename(const void *bitmap, int slots, int max_slots);
2667void f2fs_drop_nlink(struct inode *dir, struct inode *inode);
2668struct f2fs_dir_entry *__f2fs_find_entry(struct inode *dir,
2669 struct fscrypt_name *fname, struct page **res_page);
2670struct f2fs_dir_entry *f2fs_find_entry(struct inode *dir,
2671 const struct qstr *child, struct page **res_page);
2672struct f2fs_dir_entry *f2fs_parent_dir(struct inode *dir, struct page **p);
2673ino_t f2fs_inode_by_name(struct inode *dir, const struct qstr *qstr,
2674 struct page **page);
2675void f2fs_set_link(struct inode *dir, struct f2fs_dir_entry *de,
2676 struct page *page, struct inode *inode);
2677void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *d,
2678 const struct qstr *name, f2fs_hash_t name_hash,
2679 unsigned int bit_pos);
2680int f2fs_add_regular_entry(struct inode *dir, const struct qstr *new_name,
2681 const struct qstr *orig_name,
2682 struct inode *inode, nid_t ino, umode_t mode);
2683int __f2fs_do_add_link(struct inode *dir, struct fscrypt_name *fname,
2684 struct inode *inode, nid_t ino, umode_t mode);
2685int __f2fs_add_link(struct inode *dir, const struct qstr *name,
2686 struct inode *inode, nid_t ino, umode_t mode);
2687void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page,
2688 struct inode *dir, struct inode *inode);
2689int f2fs_do_tmpfile(struct inode *inode, struct inode *dir);
2690bool f2fs_empty_dir(struct inode *dir);
2691
2692static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
2693{
2694 return __f2fs_add_link(d_inode(dentry->d_parent), &dentry->d_name,
2695 inode, inode->i_ino, inode->i_mode);
2696}
2697
2698/*
2699 * super.c
2700 */
2701int f2fs_inode_dirtied(struct inode *inode, bool sync);
2702void f2fs_inode_synced(struct inode *inode);
2703int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly);
2704void f2fs_quota_off_umount(struct super_block *sb);
2705int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover);
2706int f2fs_sync_fs(struct super_block *sb, int sync);
2707extern __printf(3, 4)
2708void f2fs_msg(struct super_block *sb, const char *level, const char *fmt, ...);
2709int sanity_check_ckpt(struct f2fs_sb_info *sbi);
2710
2711/*
2712 * hash.c
2713 */
2714f2fs_hash_t f2fs_dentry_hash(const struct qstr *name_info,
2715 struct fscrypt_name *fname);
2716
2717/*
2718 * node.c
2719 */
2720struct dnode_of_data;
2721struct node_info;
2722
2723bool available_free_memory(struct f2fs_sb_info *sbi, int type);
2724int need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid);
2725bool is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid);
2726bool need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino);
2727void get_node_info(struct f2fs_sb_info *sbi, nid_t nid, struct node_info *ni);
2728pgoff_t get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs);
2729int get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode);
2730int truncate_inode_blocks(struct inode *inode, pgoff_t from);
2731int truncate_xattr_node(struct inode *inode);
2732int wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino);
2733int remove_inode_page(struct inode *inode);
2734struct page *new_inode_page(struct inode *inode);
2735struct page *new_node_page(struct dnode_of_data *dn, unsigned int ofs);
2736void ra_node_page(struct f2fs_sb_info *sbi, nid_t nid);
2737struct page *get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid);
2738struct page *get_node_page_ra(struct page *parent, int start);
2739void move_node_page(struct page *node_page, int gc_type);
2740int fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode,
2741 struct writeback_control *wbc, bool atomic);
2742int sync_node_pages(struct f2fs_sb_info *sbi, struct writeback_control *wbc,
2743 bool do_balance, enum iostat_type io_type);
2744void build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount);
2745bool alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid);
2746void alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid);
2747void alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid);
2748int try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink);
2749void recover_inline_xattr(struct inode *inode, struct page *page);
2750int recover_xattr_data(struct inode *inode, struct page *page);
2751int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page);
2752void restore_node_summary(struct f2fs_sb_info *sbi,
2753 unsigned int segno, struct f2fs_summary_block *sum);
2754void flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc);
2755int build_node_manager(struct f2fs_sb_info *sbi);
2756void destroy_node_manager(struct f2fs_sb_info *sbi);
2757int __init create_node_manager_caches(void);
2758void destroy_node_manager_caches(void);
2759
2760/*
2761 * segment.c
2762 */
2763bool need_SSR(struct f2fs_sb_info *sbi);
2764void register_inmem_page(struct inode *inode, struct page *page);
2765void drop_inmem_pages_all(struct f2fs_sb_info *sbi);
2766void drop_inmem_pages(struct inode *inode);
2767void drop_inmem_page(struct inode *inode, struct page *page);
2768int commit_inmem_pages(struct inode *inode);
2769void f2fs_balance_fs(struct f2fs_sb_info *sbi, bool need);
2770void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi);
2771int f2fs_issue_flush(struct f2fs_sb_info *sbi, nid_t ino);
2772int create_flush_cmd_control(struct f2fs_sb_info *sbi);
2773int f2fs_flush_device_cache(struct f2fs_sb_info *sbi);
2774void destroy_flush_cmd_control(struct f2fs_sb_info *sbi, bool free);
2775void invalidate_blocks(struct f2fs_sb_info *sbi, block_t addr);
2776bool is_checkpointed_data(struct f2fs_sb_info *sbi, block_t blkaddr);
2777void init_discard_policy(struct discard_policy *dpolicy, int discard_type,
2778 unsigned int granularity);
2779void drop_discard_cmd(struct f2fs_sb_info *sbi);
2780void stop_discard_thread(struct f2fs_sb_info *sbi);
2781bool f2fs_wait_discard_bios(struct f2fs_sb_info *sbi);
2782void clear_prefree_segments(struct f2fs_sb_info *sbi, struct cp_control *cpc);
2783void release_discard_addrs(struct f2fs_sb_info *sbi);
2784int npages_for_summary_flush(struct f2fs_sb_info *sbi, bool for_ra);
2785void allocate_new_segments(struct f2fs_sb_info *sbi);
2786int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range);
2787bool exist_trim_candidates(struct f2fs_sb_info *sbi, struct cp_control *cpc);
2788struct page *get_sum_page(struct f2fs_sb_info *sbi, unsigned int segno);
2789void update_meta_page(struct f2fs_sb_info *sbi, void *src, block_t blk_addr);
2790void write_meta_page(struct f2fs_sb_info *sbi, struct page *page,
2791 enum iostat_type io_type);
2792void write_node_page(unsigned int nid, struct f2fs_io_info *fio);
2793void write_data_page(struct dnode_of_data *dn, struct f2fs_io_info *fio);
2794int rewrite_data_page(struct f2fs_io_info *fio);
2795void __f2fs_replace_block(struct f2fs_sb_info *sbi, struct f2fs_summary *sum,
2796 block_t old_blkaddr, block_t new_blkaddr,
2797 bool recover_curseg, bool recover_newaddr);
2798void f2fs_replace_block(struct f2fs_sb_info *sbi, struct dnode_of_data *dn,
2799 block_t old_addr, block_t new_addr,
2800 unsigned char version, bool recover_curseg,
2801 bool recover_newaddr);
2802void allocate_data_block(struct f2fs_sb_info *sbi, struct page *page,
2803 block_t old_blkaddr, block_t *new_blkaddr,
2804 struct f2fs_summary *sum, int type,
2805 struct f2fs_io_info *fio, bool add_list);
2806void f2fs_wait_on_page_writeback(struct page *page,
2807 enum page_type type, bool ordered);
2808void f2fs_wait_on_block_writeback(struct f2fs_sb_info *sbi, block_t blkaddr);
2809void write_data_summaries(struct f2fs_sb_info *sbi, block_t start_blk);
2810void write_node_summaries(struct f2fs_sb_info *sbi, block_t start_blk);
2811int lookup_journal_in_cursum(struct f2fs_journal *journal, int type,
2812 unsigned int val, int alloc);
2813void flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc);
2814int build_segment_manager(struct f2fs_sb_info *sbi);
2815void destroy_segment_manager(struct f2fs_sb_info *sbi);
2816int __init create_segment_manager_caches(void);
2817void destroy_segment_manager_caches(void);
2818int rw_hint_to_seg_type(enum rw_hint hint);
2819enum rw_hint io_type_to_rw_hint(struct f2fs_sb_info *sbi, enum page_type type,
2820 enum temp_type temp);
2821
2822/*
2823 * checkpoint.c
2824 */
2825void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io);
2826struct page *grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index);
2827struct page *get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index);
2828struct page *get_tmp_page(struct f2fs_sb_info *sbi, pgoff_t index);
2829bool is_valid_blkaddr(struct f2fs_sb_info *sbi, block_t blkaddr, int type);
2830int ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages,
2831 int type, bool sync);
2832void ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index);
2833long sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type,
2834 long nr_to_write, enum iostat_type io_type);
2835void add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type);
2836void remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type);
2837void release_ino_entry(struct f2fs_sb_info *sbi, bool all);
2838bool exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode);
2839void set_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
2840 unsigned int devidx, int type);
2841bool is_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
2842 unsigned int devidx, int type);
2843int f2fs_sync_inode_meta(struct f2fs_sb_info *sbi);
2844int acquire_orphan_inode(struct f2fs_sb_info *sbi);
2845void release_orphan_inode(struct f2fs_sb_info *sbi);
2846void add_orphan_inode(struct inode *inode);
2847void remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino);
2848int recover_orphan_inodes(struct f2fs_sb_info *sbi);
2849int get_valid_checkpoint(struct f2fs_sb_info *sbi);
2850void update_dirty_page(struct inode *inode, struct page *page);
2851void remove_dirty_inode(struct inode *inode);
2852int sync_dirty_inodes(struct f2fs_sb_info *sbi, enum inode_type type);
2853int write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc);
2854void init_ino_entry_info(struct f2fs_sb_info *sbi);
2855int __init create_checkpoint_caches(void);
2856void destroy_checkpoint_caches(void);
2857
2858/*
2859 * data.c
2860 */
2861void f2fs_submit_merged_write(struct f2fs_sb_info *sbi, enum page_type type);
2862void f2fs_submit_merged_write_cond(struct f2fs_sb_info *sbi,
2863 struct inode *inode, nid_t ino, pgoff_t idx,
2864 enum page_type type);
2865void f2fs_flush_merged_writes(struct f2fs_sb_info *sbi);
2866int f2fs_submit_page_bio(struct f2fs_io_info *fio);
2867int f2fs_submit_page_write(struct f2fs_io_info *fio);
2868struct block_device *f2fs_target_device(struct f2fs_sb_info *sbi,
2869 block_t blk_addr, struct bio *bio);
2870int f2fs_target_device_index(struct f2fs_sb_info *sbi, block_t blkaddr);
2871void set_data_blkaddr(struct dnode_of_data *dn);
2872void f2fs_update_data_blkaddr(struct dnode_of_data *dn, block_t blkaddr);
2873int reserve_new_blocks(struct dnode_of_data *dn, blkcnt_t count);
2874int reserve_new_block(struct dnode_of_data *dn);
2875int f2fs_get_block(struct dnode_of_data *dn, pgoff_t index);
2876int f2fs_preallocate_blocks(struct kiocb *iocb, struct iov_iter *from);
2877int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index);
2878struct page *get_read_data_page(struct inode *inode, pgoff_t index,
2879 int op_flags, bool for_write);
2880struct page *find_data_page(struct inode *inode, pgoff_t index);
2881struct page *get_lock_data_page(struct inode *inode, pgoff_t index,
2882 bool for_write);
2883struct page *get_new_data_page(struct inode *inode,
2884 struct page *ipage, pgoff_t index, bool new_i_size);
2885int do_write_data_page(struct f2fs_io_info *fio);
2886int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map,
2887 int create, int flag);
2888int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
2889 u64 start, u64 len);
2890bool should_update_inplace(struct inode *inode, struct f2fs_io_info *fio);
2891bool should_update_outplace(struct inode *inode, struct f2fs_io_info *fio);
2892void f2fs_set_page_dirty_nobuffers(struct page *page);
2893int __f2fs_write_data_pages(struct address_space *mapping,
2894 struct writeback_control *wbc,
2895 enum iostat_type io_type);
2896void f2fs_invalidate_page(struct page *page, unsigned int offset,
2897 unsigned int length);
2898int f2fs_release_page(struct page *page, gfp_t wait);
2899#ifdef CONFIG_MIGRATION
2900int f2fs_migrate_page(struct address_space *mapping, struct page *newpage,
2901 struct page *page, enum migrate_mode mode);
2902#endif
2903bool f2fs_overwrite_io(struct inode *inode, loff_t pos, size_t len);
2904
2905/*
2906 * gc.c
2907 */
2908int start_gc_thread(struct f2fs_sb_info *sbi);
2909void stop_gc_thread(struct f2fs_sb_info *sbi);
2910block_t start_bidx_of_node(unsigned int node_ofs, struct inode *inode);
2911int f2fs_gc(struct f2fs_sb_info *sbi, bool sync, bool background,
2912 unsigned int segno);
2913void build_gc_manager(struct f2fs_sb_info *sbi);
2914
2915/*
2916 * recovery.c
2917 */
2918int recover_fsync_data(struct f2fs_sb_info *sbi, bool check_only);
2919bool space_for_roll_forward(struct f2fs_sb_info *sbi);
2920
2921/*
2922 * debug.c
2923 */
2924#ifdef CONFIG_F2FS_STAT_FS
2925struct f2fs_stat_info {
2926 struct list_head stat_list;
2927 struct f2fs_sb_info *sbi;
2928 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
2929 int main_area_segs, main_area_sections, main_area_zones;
2930 unsigned long long hit_largest, hit_cached, hit_rbtree;
2931 unsigned long long hit_total, total_ext;
2932 int ext_tree, zombie_tree, ext_node;
2933 int ndirty_node, ndirty_dent, ndirty_meta, ndirty_imeta;
2934 int ndirty_data, ndirty_qdata;
2935 int inmem_pages;
2936 unsigned int ndirty_dirs, ndirty_files, nquota_files, ndirty_all;
2937 int nats, dirty_nats, sits, dirty_sits;
2938 int free_nids, avail_nids, alloc_nids;
2939 int total_count, utilization;
2940 int bg_gc, nr_wb_cp_data, nr_wb_data;
2941 int nr_flushing, nr_flushed, flush_list_empty;
2942 int nr_discarding, nr_discarded;
2943 int nr_discard_cmd;
2944 unsigned int undiscard_blks;
2945 int inline_xattr, inline_inode, inline_dir, append, update, orphans;
2946 int aw_cnt, max_aw_cnt, vw_cnt, max_vw_cnt;
2947 unsigned int valid_count, valid_node_count, valid_inode_count, discard_blks;
2948 unsigned int bimodal, avg_vblocks;
2949 int util_free, util_valid, util_invalid;
2950 int rsvd_segs, overp_segs;
2951 int dirty_count, node_pages, meta_pages;
2952 int prefree_count, call_count, cp_count, bg_cp_count;
2953 int tot_segs, node_segs, data_segs, free_segs, free_secs;
2954 int bg_node_segs, bg_data_segs;
2955 int tot_blks, data_blks, node_blks;
2956 int bg_data_blks, bg_node_blks;
2957 int curseg[NR_CURSEG_TYPE];
2958 int cursec[NR_CURSEG_TYPE];
2959 int curzone[NR_CURSEG_TYPE];
2960
2961 unsigned int segment_count[2];
2962 unsigned int block_count[2];
2963 unsigned int inplace_count;
2964 unsigned long long base_mem, cache_mem, page_mem;
2965};
2966
2967static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
2968{
2969 return (struct f2fs_stat_info *)sbi->stat_info;
2970}
2971
2972#define stat_inc_cp_count(si) ((si)->cp_count++)
2973#define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++)
2974#define stat_inc_call_count(si) ((si)->call_count++)
2975#define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
2976#define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++)
2977#define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--)
2978#define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext))
2979#define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree))
2980#define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest))
2981#define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached))
2982#define stat_inc_inline_xattr(inode) \
2983 do { \
2984 if (f2fs_has_inline_xattr(inode)) \
2985 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
2986 } while (0)
2987#define stat_dec_inline_xattr(inode) \
2988 do { \
2989 if (f2fs_has_inline_xattr(inode)) \
2990 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
2991 } while (0)
2992#define stat_inc_inline_inode(inode) \
2993 do { \
2994 if (f2fs_has_inline_data(inode)) \
2995 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
2996 } while (0)
2997#define stat_dec_inline_inode(inode) \
2998 do { \
2999 if (f2fs_has_inline_data(inode)) \
3000 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
3001 } while (0)
3002#define stat_inc_inline_dir(inode) \
3003 do { \
3004 if (f2fs_has_inline_dentry(inode)) \
3005 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
3006 } while (0)
3007#define stat_dec_inline_dir(inode) \
3008 do { \
3009 if (f2fs_has_inline_dentry(inode)) \
3010 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
3011 } while (0)
3012#define stat_inc_seg_type(sbi, curseg) \
3013 ((sbi)->segment_count[(curseg)->alloc_type]++)
3014#define stat_inc_block_count(sbi, curseg) \
3015 ((sbi)->block_count[(curseg)->alloc_type]++)
3016#define stat_inc_inplace_blocks(sbi) \
3017 (atomic_inc(&(sbi)->inplace_count))
3018#define stat_inc_atomic_write(inode) \
3019 (atomic_inc(&F2FS_I_SB(inode)->aw_cnt))
3020#define stat_dec_atomic_write(inode) \
3021 (atomic_dec(&F2FS_I_SB(inode)->aw_cnt))
3022#define stat_update_max_atomic_write(inode) \
3023 do { \
3024 int cur = atomic_read(&F2FS_I_SB(inode)->aw_cnt); \
3025 int max = atomic_read(&F2FS_I_SB(inode)->max_aw_cnt); \
3026 if (cur > max) \
3027 atomic_set(&F2FS_I_SB(inode)->max_aw_cnt, cur); \
3028 } while (0)
3029#define stat_inc_volatile_write(inode) \
3030 (atomic_inc(&F2FS_I_SB(inode)->vw_cnt))
3031#define stat_dec_volatile_write(inode) \
3032 (atomic_dec(&F2FS_I_SB(inode)->vw_cnt))
3033#define stat_update_max_volatile_write(inode) \
3034 do { \
3035 int cur = atomic_read(&F2FS_I_SB(inode)->vw_cnt); \
3036 int max = atomic_read(&F2FS_I_SB(inode)->max_vw_cnt); \
3037 if (cur > max) \
3038 atomic_set(&F2FS_I_SB(inode)->max_vw_cnt, cur); \
3039 } while (0)
3040#define stat_inc_seg_count(sbi, type, gc_type) \
3041 do { \
3042 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
3043 si->tot_segs++; \
3044 if ((type) == SUM_TYPE_DATA) { \
3045 si->data_segs++; \
3046 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
3047 } else { \
3048 si->node_segs++; \
3049 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
3050 } \
3051 } while (0)
3052
3053#define stat_inc_tot_blk_count(si, blks) \
3054 ((si)->tot_blks += (blks))
3055
3056#define stat_inc_data_blk_count(sbi, blks, gc_type) \
3057 do { \
3058 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
3059 stat_inc_tot_blk_count(si, blks); \
3060 si->data_blks += (blks); \
3061 si->bg_data_blks += ((gc_type) == BG_GC) ? (blks) : 0; \
3062 } while (0)
3063
3064#define stat_inc_node_blk_count(sbi, blks, gc_type) \
3065 do { \
3066 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
3067 stat_inc_tot_blk_count(si, blks); \
3068 si->node_blks += (blks); \
3069 si->bg_node_blks += ((gc_type) == BG_GC) ? (blks) : 0; \
3070 } while (0)
3071
3072int f2fs_build_stats(struct f2fs_sb_info *sbi);
3073void f2fs_destroy_stats(struct f2fs_sb_info *sbi);
3074int __init f2fs_create_root_stats(void);
3075void f2fs_destroy_root_stats(void);
3076#else
3077#define stat_inc_cp_count(si) do { } while (0)
3078#define stat_inc_bg_cp_count(si) do { } while (0)
3079#define stat_inc_call_count(si) do { } while (0)
3080#define stat_inc_bggc_count(si) do { } while (0)
3081#define stat_inc_dirty_inode(sbi, type) do { } while (0)
3082#define stat_dec_dirty_inode(sbi, type) do { } while (0)
3083#define stat_inc_total_hit(sb) do { } while (0)
3084#define stat_inc_rbtree_node_hit(sb) do { } while (0)
3085#define stat_inc_largest_node_hit(sbi) do { } while (0)
3086#define stat_inc_cached_node_hit(sbi) do { } while (0)
3087#define stat_inc_inline_xattr(inode) do { } while (0)
3088#define stat_dec_inline_xattr(inode) do { } while (0)
3089#define stat_inc_inline_inode(inode) do { } while (0)
3090#define stat_dec_inline_inode(inode) do { } while (0)
3091#define stat_inc_inline_dir(inode) do { } while (0)
3092#define stat_dec_inline_dir(inode) do { } while (0)
3093#define stat_inc_atomic_write(inode) do { } while (0)
3094#define stat_dec_atomic_write(inode) do { } while (0)
3095#define stat_update_max_atomic_write(inode) do { } while (0)
3096#define stat_inc_volatile_write(inode) do { } while (0)
3097#define stat_dec_volatile_write(inode) do { } while (0)
3098#define stat_update_max_volatile_write(inode) do { } while (0)
3099#define stat_inc_seg_type(sbi, curseg) do { } while (0)
3100#define stat_inc_block_count(sbi, curseg) do { } while (0)
3101#define stat_inc_inplace_blocks(sbi) do { } while (0)
3102#define stat_inc_seg_count(sbi, type, gc_type) do { } while (0)
3103#define stat_inc_tot_blk_count(si, blks) do { } while (0)
3104#define stat_inc_data_blk_count(sbi, blks, gc_type) do { } while (0)
3105#define stat_inc_node_blk_count(sbi, blks, gc_type) do { } while (0)
3106
3107static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
3108static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
3109static inline int __init f2fs_create_root_stats(void) { return 0; }
3110static inline void f2fs_destroy_root_stats(void) { }
3111#endif
3112
3113extern const struct file_operations f2fs_dir_operations;
3114extern const struct file_operations f2fs_file_operations;
3115extern const struct inode_operations f2fs_file_inode_operations;
3116extern const struct address_space_operations f2fs_dblock_aops;
3117extern const struct address_space_operations f2fs_node_aops;
3118extern const struct address_space_operations f2fs_meta_aops;
3119extern const struct inode_operations f2fs_dir_inode_operations;
3120extern const struct inode_operations f2fs_symlink_inode_operations;
3121extern const struct inode_operations f2fs_encrypted_symlink_inode_operations;
3122extern const struct inode_operations f2fs_special_inode_operations;
3123extern struct kmem_cache *inode_entry_slab;
3124
3125/*
3126 * inline.c
3127 */
3128bool f2fs_may_inline_data(struct inode *inode);
3129bool f2fs_may_inline_dentry(struct inode *inode);
3130void read_inline_data(struct page *page, struct page *ipage);
3131void truncate_inline_inode(struct inode *inode, struct page *ipage, u64 from);
3132int f2fs_read_inline_data(struct inode *inode, struct page *page);
3133int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page);
3134int f2fs_convert_inline_inode(struct inode *inode);
3135int f2fs_write_inline_data(struct inode *inode, struct page *page);
3136bool recover_inline_data(struct inode *inode, struct page *npage);
3137struct f2fs_dir_entry *find_in_inline_dir(struct inode *dir,
3138 struct fscrypt_name *fname, struct page **res_page);
3139int make_empty_inline_dir(struct inode *inode, struct inode *parent,
3140 struct page *ipage);
3141int f2fs_add_inline_entry(struct inode *dir, const struct qstr *new_name,
3142 const struct qstr *orig_name,
3143 struct inode *inode, nid_t ino, umode_t mode);
3144void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry, struct page *page,
3145 struct inode *dir, struct inode *inode);
3146bool f2fs_empty_inline_dir(struct inode *dir);
3147int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx,
3148 struct fscrypt_str *fstr);
3149int f2fs_inline_data_fiemap(struct inode *inode,
3150 struct fiemap_extent_info *fieinfo,
3151 __u64 start, __u64 len);
3152
3153/*
3154 * shrinker.c
3155 */
3156unsigned long f2fs_shrink_count(struct shrinker *shrink,
3157 struct shrink_control *sc);
3158unsigned long f2fs_shrink_scan(struct shrinker *shrink,
3159 struct shrink_control *sc);
3160void f2fs_join_shrinker(struct f2fs_sb_info *sbi);
3161void f2fs_leave_shrinker(struct f2fs_sb_info *sbi);
3162
3163/*
3164 * extent_cache.c
3165 */
3166struct rb_entry *__lookup_rb_tree(struct rb_root *root,
3167 struct rb_entry *cached_re, unsigned int ofs);
3168struct rb_node **__lookup_rb_tree_for_insert(struct f2fs_sb_info *sbi,
3169 struct rb_root *root, struct rb_node **parent,
3170 unsigned int ofs);
3171struct rb_entry *__lookup_rb_tree_ret(struct rb_root *root,
3172 struct rb_entry *cached_re, unsigned int ofs,
3173 struct rb_entry **prev_entry, struct rb_entry **next_entry,
3174 struct rb_node ***insert_p, struct rb_node **insert_parent,
3175 bool force);
3176bool __check_rb_tree_consistence(struct f2fs_sb_info *sbi,
3177 struct rb_root *root);
3178unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *sbi, int nr_shrink);
3179bool f2fs_init_extent_tree(struct inode *inode, struct f2fs_extent *i_ext);
3180void f2fs_drop_extent_tree(struct inode *inode);
3181unsigned int f2fs_destroy_extent_node(struct inode *inode);
3182void f2fs_destroy_extent_tree(struct inode *inode);
3183bool f2fs_lookup_extent_cache(struct inode *inode, pgoff_t pgofs,
3184 struct extent_info *ei);
3185void f2fs_update_extent_cache(struct dnode_of_data *dn);
3186void f2fs_update_extent_cache_range(struct dnode_of_data *dn,
3187 pgoff_t fofs, block_t blkaddr, unsigned int len);
3188void init_extent_cache_info(struct f2fs_sb_info *sbi);
3189int __init create_extent_cache(void);
3190void destroy_extent_cache(void);
3191
3192/*
3193 * sysfs.c
3194 */
3195int __init f2fs_init_sysfs(void);
3196void f2fs_exit_sysfs(void);
3197int f2fs_register_sysfs(struct f2fs_sb_info *sbi);
3198void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi);
3199
3200/*
3201 * crypto support
3202 */
3203static inline bool f2fs_encrypted_inode(struct inode *inode)
3204{
3205 return file_is_encrypt(inode);
3206}
3207
3208static inline bool f2fs_encrypted_file(struct inode *inode)
3209{
3210 return f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode);
3211}
3212
3213static inline void f2fs_set_encrypted_inode(struct inode *inode)
3214{
3215#ifdef CONFIG_F2FS_FS_ENCRYPTION
3216 file_set_encrypt(inode);
3217 inode->i_flags |= S_ENCRYPTED;
3218#endif
3219}
3220
3221static inline bool f2fs_bio_encrypted(struct bio *bio)
3222{
3223 return bio->bi_private != NULL;
3224}
3225
3226#define F2FS_FEATURE_FUNCS(name, flagname) \
3227static inline int f2fs_sb_has_##name(struct super_block *sb) \
3228{ \
3229 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_##flagname); \
3230}
3231
3232F2FS_FEATURE_FUNCS(encrypt, ENCRYPT);
3233F2FS_FEATURE_FUNCS(blkzoned, BLKZONED);
3234F2FS_FEATURE_FUNCS(extra_attr, EXTRA_ATTR);
3235F2FS_FEATURE_FUNCS(project_quota, PRJQUOTA);
3236F2FS_FEATURE_FUNCS(inode_chksum, INODE_CHKSUM);
3237F2FS_FEATURE_FUNCS(flexible_inline_xattr, FLEXIBLE_INLINE_XATTR);
3238F2FS_FEATURE_FUNCS(quota_ino, QUOTA_INO);
3239F2FS_FEATURE_FUNCS(inode_crtime, INODE_CRTIME);
3240F2FS_FEATURE_FUNCS(lost_found, LOST_FOUND);
3241
3242#ifdef CONFIG_BLK_DEV_ZONED
3243static inline int get_blkz_type(struct f2fs_sb_info *sbi,
3244 struct block_device *bdev, block_t blkaddr)
3245{
3246 unsigned int zno = blkaddr >> sbi->log_blocks_per_blkz;
3247 int i;
3248
3249 for (i = 0; i < sbi->s_ndevs; i++)
3250 if (FDEV(i).bdev == bdev)
3251 return FDEV(i).blkz_type[zno];
3252 return -EINVAL;
3253}
3254#endif
3255
3256static inline bool f2fs_discard_en(struct f2fs_sb_info *sbi)
3257{
3258 struct request_queue *q = bdev_get_queue(sbi->sb->s_bdev);
3259
3260 return blk_queue_discard(q) || f2fs_sb_has_blkzoned(sbi->sb);
3261}
3262
3263static inline void set_opt_mode(struct f2fs_sb_info *sbi, unsigned int mt)
3264{
3265 clear_opt(sbi, ADAPTIVE);
3266 clear_opt(sbi, LFS);
3267
3268 switch (mt) {
3269 case F2FS_MOUNT_ADAPTIVE:
3270 set_opt(sbi, ADAPTIVE);
3271 break;
3272 case F2FS_MOUNT_LFS:
3273 set_opt(sbi, LFS);
3274 break;
3275 }
3276}
3277
3278static inline bool f2fs_may_encrypt(struct inode *inode)
3279{
3280#ifdef CONFIG_F2FS_FS_ENCRYPTION
3281 umode_t mode = inode->i_mode;
3282
3283 return (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode));
3284#else
3285 return 0;
3286#endif
3287}
3288
3289static inline bool f2fs_force_buffered_io(struct inode *inode, int rw)
3290{
3291 return (f2fs_encrypted_file(inode) ||
3292 (rw == WRITE && test_opt(F2FS_I_SB(inode), LFS)) ||
3293 F2FS_I_SB(inode)->s_ndevs);
3294}
3295
3296#endif