xref: /openbmc/linux/fs/f2fs/f2fs.h (revision b28f047b)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * fs/f2fs/f2fs.h
4  *
5  * Copyright (c) 2012 Samsung Electronics Co., Ltd.
6  *             http://www.samsung.com/
7  */
8 #ifndef _LINUX_F2FS_H
9 #define _LINUX_F2FS_H
10 
11 #include <linux/uio.h>
12 #include <linux/types.h>
13 #include <linux/page-flags.h>
14 #include <linux/buffer_head.h>
15 #include <linux/slab.h>
16 #include <linux/crc32.h>
17 #include <linux/magic.h>
18 #include <linux/kobject.h>
19 #include <linux/sched.h>
20 #include <linux/cred.h>
21 #include <linux/vmalloc.h>
22 #include <linux/bio.h>
23 #include <linux/blkdev.h>
24 #include <linux/quotaops.h>
25 #include <linux/part_stat.h>
26 #include <crypto/hash.h>
27 
28 #include <linux/fscrypt.h>
29 #include <linux/fsverity.h>
30 
31 #ifdef CONFIG_F2FS_CHECK_FS
32 #define f2fs_bug_on(sbi, condition)	BUG_ON(condition)
33 #else
34 #define f2fs_bug_on(sbi, condition)					\
35 	do {								\
36 		if (unlikely(condition)) {				\
37 			WARN_ON(1);					\
38 			set_sbi_flag(sbi, SBI_NEED_FSCK);		\
39 		}							\
40 	} while (0)
41 #endif
42 
43 enum {
44 	FAULT_KMALLOC,
45 	FAULT_KVMALLOC,
46 	FAULT_PAGE_ALLOC,
47 	FAULT_PAGE_GET,
48 	FAULT_ALLOC_BIO,
49 	FAULT_ALLOC_NID,
50 	FAULT_ORPHAN,
51 	FAULT_BLOCK,
52 	FAULT_DIR_DEPTH,
53 	FAULT_EVICT_INODE,
54 	FAULT_TRUNCATE,
55 	FAULT_READ_IO,
56 	FAULT_CHECKPOINT,
57 	FAULT_DISCARD,
58 	FAULT_WRITE_IO,
59 	FAULT_MAX,
60 };
61 
62 #ifdef CONFIG_F2FS_FAULT_INJECTION
63 #define F2FS_ALL_FAULT_TYPE		((1 << FAULT_MAX) - 1)
64 
65 struct f2fs_fault_info {
66 	atomic_t inject_ops;
67 	unsigned int inject_rate;
68 	unsigned int inject_type;
69 };
70 
71 extern const char *f2fs_fault_name[FAULT_MAX];
72 #define IS_FAULT_SET(fi, type) ((fi)->inject_type & (1 << (type)))
73 #endif
74 
75 /*
76  * For mount options
77  */
78 #define F2FS_MOUNT_DISABLE_ROLL_FORWARD	0x00000002
79 #define F2FS_MOUNT_DISCARD		0x00000004
80 #define F2FS_MOUNT_NOHEAP		0x00000008
81 #define F2FS_MOUNT_XATTR_USER		0x00000010
82 #define F2FS_MOUNT_POSIX_ACL		0x00000020
83 #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY	0x00000040
84 #define F2FS_MOUNT_INLINE_XATTR		0x00000080
85 #define F2FS_MOUNT_INLINE_DATA		0x00000100
86 #define F2FS_MOUNT_INLINE_DENTRY	0x00000200
87 #define F2FS_MOUNT_FLUSH_MERGE		0x00000400
88 #define F2FS_MOUNT_NOBARRIER		0x00000800
89 #define F2FS_MOUNT_FASTBOOT		0x00001000
90 #define F2FS_MOUNT_EXTENT_CACHE		0x00002000
91 #define F2FS_MOUNT_DATA_FLUSH		0x00008000
92 #define F2FS_MOUNT_FAULT_INJECTION	0x00010000
93 #define F2FS_MOUNT_USRQUOTA		0x00080000
94 #define F2FS_MOUNT_GRPQUOTA		0x00100000
95 #define F2FS_MOUNT_PRJQUOTA		0x00200000
96 #define F2FS_MOUNT_QUOTA		0x00400000
97 #define F2FS_MOUNT_INLINE_XATTR_SIZE	0x00800000
98 #define F2FS_MOUNT_RESERVE_ROOT		0x01000000
99 #define F2FS_MOUNT_DISABLE_CHECKPOINT	0x02000000
100 #define F2FS_MOUNT_NORECOVERY		0x04000000
101 #define F2FS_MOUNT_ATGC			0x08000000
102 
103 #define F2FS_OPTION(sbi)	((sbi)->mount_opt)
104 #define clear_opt(sbi, option)	(F2FS_OPTION(sbi).opt &= ~F2FS_MOUNT_##option)
105 #define set_opt(sbi, option)	(F2FS_OPTION(sbi).opt |= F2FS_MOUNT_##option)
106 #define test_opt(sbi, option)	(F2FS_OPTION(sbi).opt & F2FS_MOUNT_##option)
107 
108 #define ver_after(a, b)	(typecheck(unsigned long long, a) &&		\
109 		typecheck(unsigned long long, b) &&			\
110 		((long long)((a) - (b)) > 0))
111 
112 typedef u32 block_t;	/*
113 			 * should not change u32, since it is the on-disk block
114 			 * address format, __le32.
115 			 */
116 typedef u32 nid_t;
117 
118 #define COMPRESS_EXT_NUM		16
119 
120 struct f2fs_mount_info {
121 	unsigned int opt;
122 	int write_io_size_bits;		/* Write IO size bits */
123 	block_t root_reserved_blocks;	/* root reserved blocks */
124 	kuid_t s_resuid;		/* reserved blocks for uid */
125 	kgid_t s_resgid;		/* reserved blocks for gid */
126 	int active_logs;		/* # of active logs */
127 	int inline_xattr_size;		/* inline xattr size */
128 #ifdef CONFIG_F2FS_FAULT_INJECTION
129 	struct f2fs_fault_info fault_info;	/* For fault injection */
130 #endif
131 #ifdef CONFIG_QUOTA
132 	/* Names of quota files with journalled quota */
133 	char *s_qf_names[MAXQUOTAS];
134 	int s_jquota_fmt;			/* Format of quota to use */
135 #endif
136 	/* For which write hints are passed down to block layer */
137 	int whint_mode;
138 	int alloc_mode;			/* segment allocation policy */
139 	int fsync_mode;			/* fsync policy */
140 	int fs_mode;			/* fs mode: LFS or ADAPTIVE */
141 	int bggc_mode;			/* bggc mode: off, on or sync */
142 	struct fscrypt_dummy_policy dummy_enc_policy; /* test dummy encryption */
143 	block_t unusable_cap_perc;	/* percentage for cap */
144 	block_t unusable_cap;		/* Amount of space allowed to be
145 					 * unusable when disabling checkpoint
146 					 */
147 
148 	/* For compression */
149 	unsigned char compress_algorithm;	/* algorithm type */
150 	unsigned char compress_log_size;	/* cluster log size */
151 	bool compress_chksum;			/* compressed data chksum */
152 	unsigned char compress_ext_cnt;		/* extension count */
153 	unsigned char extensions[COMPRESS_EXT_NUM][F2FS_EXTENSION_LEN];	/* extensions */
154 };
155 
156 #define F2FS_FEATURE_ENCRYPT		0x0001
157 #define F2FS_FEATURE_BLKZONED		0x0002
158 #define F2FS_FEATURE_ATOMIC_WRITE	0x0004
159 #define F2FS_FEATURE_EXTRA_ATTR		0x0008
160 #define F2FS_FEATURE_PRJQUOTA		0x0010
161 #define F2FS_FEATURE_INODE_CHKSUM	0x0020
162 #define F2FS_FEATURE_FLEXIBLE_INLINE_XATTR	0x0040
163 #define F2FS_FEATURE_QUOTA_INO		0x0080
164 #define F2FS_FEATURE_INODE_CRTIME	0x0100
165 #define F2FS_FEATURE_LOST_FOUND		0x0200
166 #define F2FS_FEATURE_VERITY		0x0400
167 #define F2FS_FEATURE_SB_CHKSUM		0x0800
168 #define F2FS_FEATURE_CASEFOLD		0x1000
169 #define F2FS_FEATURE_COMPRESSION	0x2000
170 
171 #define __F2FS_HAS_FEATURE(raw_super, mask)				\
172 	((raw_super->feature & cpu_to_le32(mask)) != 0)
173 #define F2FS_HAS_FEATURE(sbi, mask)	__F2FS_HAS_FEATURE(sbi->raw_super, mask)
174 #define F2FS_SET_FEATURE(sbi, mask)					\
175 	(sbi->raw_super->feature |= cpu_to_le32(mask))
176 #define F2FS_CLEAR_FEATURE(sbi, mask)					\
177 	(sbi->raw_super->feature &= ~cpu_to_le32(mask))
178 
179 /*
180  * Default values for user and/or group using reserved blocks
181  */
182 #define	F2FS_DEF_RESUID		0
183 #define	F2FS_DEF_RESGID		0
184 
185 /*
186  * For checkpoint manager
187  */
188 enum {
189 	NAT_BITMAP,
190 	SIT_BITMAP
191 };
192 
193 #define	CP_UMOUNT	0x00000001
194 #define	CP_FASTBOOT	0x00000002
195 #define	CP_SYNC		0x00000004
196 #define	CP_RECOVERY	0x00000008
197 #define	CP_DISCARD	0x00000010
198 #define CP_TRIMMED	0x00000020
199 #define CP_PAUSE	0x00000040
200 #define CP_RESIZE 	0x00000080
201 
202 #define MAX_DISCARD_BLOCKS(sbi)		BLKS_PER_SEC(sbi)
203 #define DEF_MAX_DISCARD_REQUEST		8	/* issue 8 discards per round */
204 #define DEF_MIN_DISCARD_ISSUE_TIME	50	/* 50 ms, if exists */
205 #define DEF_MID_DISCARD_ISSUE_TIME	500	/* 500 ms, if device busy */
206 #define DEF_MAX_DISCARD_ISSUE_TIME	60000	/* 60 s, if no candidates */
207 #define DEF_DISCARD_URGENT_UTIL		80	/* do more discard over 80% */
208 #define DEF_CP_INTERVAL			60	/* 60 secs */
209 #define DEF_IDLE_INTERVAL		5	/* 5 secs */
210 #define DEF_DISABLE_INTERVAL		5	/* 5 secs */
211 #define DEF_DISABLE_QUICK_INTERVAL	1	/* 1 secs */
212 #define DEF_UMOUNT_DISCARD_TIMEOUT	5	/* 5 secs */
213 
214 struct cp_control {
215 	int reason;
216 	__u64 trim_start;
217 	__u64 trim_end;
218 	__u64 trim_minlen;
219 };
220 
221 /*
222  * indicate meta/data type
223  */
224 enum {
225 	META_CP,
226 	META_NAT,
227 	META_SIT,
228 	META_SSA,
229 	META_MAX,
230 	META_POR,
231 	DATA_GENERIC,		/* check range only */
232 	DATA_GENERIC_ENHANCE,	/* strong check on range and segment bitmap */
233 	DATA_GENERIC_ENHANCE_READ,	/*
234 					 * strong check on range and segment
235 					 * bitmap but no warning due to race
236 					 * condition of read on truncated area
237 					 * by extent_cache
238 					 */
239 	META_GENERIC,
240 };
241 
242 /* for the list of ino */
243 enum {
244 	ORPHAN_INO,		/* for orphan ino list */
245 	APPEND_INO,		/* for append ino list */
246 	UPDATE_INO,		/* for update ino list */
247 	TRANS_DIR_INO,		/* for trasactions dir ino list */
248 	FLUSH_INO,		/* for multiple device flushing */
249 	MAX_INO_ENTRY,		/* max. list */
250 };
251 
252 struct ino_entry {
253 	struct list_head list;		/* list head */
254 	nid_t ino;			/* inode number */
255 	unsigned int dirty_device;	/* dirty device bitmap */
256 };
257 
258 /* for the list of inodes to be GCed */
259 struct inode_entry {
260 	struct list_head list;	/* list head */
261 	struct inode *inode;	/* vfs inode pointer */
262 };
263 
264 struct fsync_node_entry {
265 	struct list_head list;	/* list head */
266 	struct page *page;	/* warm node page pointer */
267 	unsigned int seq_id;	/* sequence id */
268 };
269 
270 /* for the bitmap indicate blocks to be discarded */
271 struct discard_entry {
272 	struct list_head list;	/* list head */
273 	block_t start_blkaddr;	/* start blockaddr of current segment */
274 	unsigned char discard_map[SIT_VBLOCK_MAP_SIZE];	/* segment discard bitmap */
275 };
276 
277 /* default discard granularity of inner discard thread, unit: block count */
278 #define DEFAULT_DISCARD_GRANULARITY		16
279 
280 /* max discard pend list number */
281 #define MAX_PLIST_NUM		512
282 #define plist_idx(blk_num)	((blk_num) >= MAX_PLIST_NUM ?		\
283 					(MAX_PLIST_NUM - 1) : ((blk_num) - 1))
284 
285 enum {
286 	D_PREP,			/* initial */
287 	D_PARTIAL,		/* partially submitted */
288 	D_SUBMIT,		/* all submitted */
289 	D_DONE,			/* finished */
290 };
291 
292 struct discard_info {
293 	block_t lstart;			/* logical start address */
294 	block_t len;			/* length */
295 	block_t start;			/* actual start address in dev */
296 };
297 
298 struct discard_cmd {
299 	struct rb_node rb_node;		/* rb node located in rb-tree */
300 	union {
301 		struct {
302 			block_t lstart;	/* logical start address */
303 			block_t len;	/* length */
304 			block_t start;	/* actual start address in dev */
305 		};
306 		struct discard_info di;	/* discard info */
307 
308 	};
309 	struct list_head list;		/* command list */
310 	struct completion wait;		/* compleation */
311 	struct block_device *bdev;	/* bdev */
312 	unsigned short ref;		/* reference count */
313 	unsigned char state;		/* state */
314 	unsigned char queued;		/* queued discard */
315 	int error;			/* bio error */
316 	spinlock_t lock;		/* for state/bio_ref updating */
317 	unsigned short bio_ref;		/* bio reference count */
318 };
319 
320 enum {
321 	DPOLICY_BG,
322 	DPOLICY_FORCE,
323 	DPOLICY_FSTRIM,
324 	DPOLICY_UMOUNT,
325 	MAX_DPOLICY,
326 };
327 
328 struct discard_policy {
329 	int type;			/* type of discard */
330 	unsigned int min_interval;	/* used for candidates exist */
331 	unsigned int mid_interval;	/* used for device busy */
332 	unsigned int max_interval;	/* used for candidates not exist */
333 	unsigned int max_requests;	/* # of discards issued per round */
334 	unsigned int io_aware_gran;	/* minimum granularity discard not be aware of I/O */
335 	bool io_aware;			/* issue discard in idle time */
336 	bool sync;			/* submit discard with REQ_SYNC flag */
337 	bool ordered;			/* issue discard by lba order */
338 	bool timeout;			/* discard timeout for put_super */
339 	unsigned int granularity;	/* discard granularity */
340 };
341 
342 struct discard_cmd_control {
343 	struct task_struct *f2fs_issue_discard;	/* discard thread */
344 	struct list_head entry_list;		/* 4KB discard entry list */
345 	struct list_head pend_list[MAX_PLIST_NUM];/* store pending entries */
346 	struct list_head wait_list;		/* store on-flushing entries */
347 	struct list_head fstrim_list;		/* in-flight discard from fstrim */
348 	wait_queue_head_t discard_wait_queue;	/* waiting queue for wake-up */
349 	unsigned int discard_wake;		/* to wake up discard thread */
350 	struct mutex cmd_lock;
351 	unsigned int nr_discards;		/* # of discards in the list */
352 	unsigned int max_discards;		/* max. discards to be issued */
353 	unsigned int discard_granularity;	/* discard granularity */
354 	unsigned int undiscard_blks;		/* # of undiscard blocks */
355 	unsigned int next_pos;			/* next discard position */
356 	atomic_t issued_discard;		/* # of issued discard */
357 	atomic_t queued_discard;		/* # of queued discard */
358 	atomic_t discard_cmd_cnt;		/* # of cached cmd count */
359 	struct rb_root_cached root;		/* root of discard rb-tree */
360 	bool rbtree_check;			/* config for consistence check */
361 };
362 
363 /* for the list of fsync inodes, used only during recovery */
364 struct fsync_inode_entry {
365 	struct list_head list;	/* list head */
366 	struct inode *inode;	/* vfs inode pointer */
367 	block_t blkaddr;	/* block address locating the last fsync */
368 	block_t last_dentry;	/* block address locating the last dentry */
369 };
370 
371 #define nats_in_cursum(jnl)		(le16_to_cpu((jnl)->n_nats))
372 #define sits_in_cursum(jnl)		(le16_to_cpu((jnl)->n_sits))
373 
374 #define nat_in_journal(jnl, i)		((jnl)->nat_j.entries[i].ne)
375 #define nid_in_journal(jnl, i)		((jnl)->nat_j.entries[i].nid)
376 #define sit_in_journal(jnl, i)		((jnl)->sit_j.entries[i].se)
377 #define segno_in_journal(jnl, i)	((jnl)->sit_j.entries[i].segno)
378 
379 #define MAX_NAT_JENTRIES(jnl)	(NAT_JOURNAL_ENTRIES - nats_in_cursum(jnl))
380 #define MAX_SIT_JENTRIES(jnl)	(SIT_JOURNAL_ENTRIES - sits_in_cursum(jnl))
381 
382 static inline int update_nats_in_cursum(struct f2fs_journal *journal, int i)
383 {
384 	int before = nats_in_cursum(journal);
385 
386 	journal->n_nats = cpu_to_le16(before + i);
387 	return before;
388 }
389 
390 static inline int update_sits_in_cursum(struct f2fs_journal *journal, int i)
391 {
392 	int before = sits_in_cursum(journal);
393 
394 	journal->n_sits = cpu_to_le16(before + i);
395 	return before;
396 }
397 
398 static inline bool __has_cursum_space(struct f2fs_journal *journal,
399 							int size, int type)
400 {
401 	if (type == NAT_JOURNAL)
402 		return size <= MAX_NAT_JENTRIES(journal);
403 	return size <= MAX_SIT_JENTRIES(journal);
404 }
405 
406 /* for inline stuff */
407 #define DEF_INLINE_RESERVED_SIZE	1
408 static inline int get_extra_isize(struct inode *inode);
409 static inline int get_inline_xattr_addrs(struct inode *inode);
410 #define MAX_INLINE_DATA(inode)	(sizeof(__le32) *			\
411 				(CUR_ADDRS_PER_INODE(inode) -		\
412 				get_inline_xattr_addrs(inode) -	\
413 				DEF_INLINE_RESERVED_SIZE))
414 
415 /* for inline dir */
416 #define NR_INLINE_DENTRY(inode)	(MAX_INLINE_DATA(inode) * BITS_PER_BYTE / \
417 				((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \
418 				BITS_PER_BYTE + 1))
419 #define INLINE_DENTRY_BITMAP_SIZE(inode) \
420 	DIV_ROUND_UP(NR_INLINE_DENTRY(inode), BITS_PER_BYTE)
421 #define INLINE_RESERVED_SIZE(inode)	(MAX_INLINE_DATA(inode) - \
422 				((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \
423 				NR_INLINE_DENTRY(inode) + \
424 				INLINE_DENTRY_BITMAP_SIZE(inode)))
425 
426 /*
427  * For INODE and NODE manager
428  */
429 /* for directory operations */
430 
431 struct f2fs_filename {
432 	/*
433 	 * The filename the user specified.  This is NULL for some
434 	 * filesystem-internal operations, e.g. converting an inline directory
435 	 * to a non-inline one, or roll-forward recovering an encrypted dentry.
436 	 */
437 	const struct qstr *usr_fname;
438 
439 	/*
440 	 * The on-disk filename.  For encrypted directories, this is encrypted.
441 	 * This may be NULL for lookups in an encrypted dir without the key.
442 	 */
443 	struct fscrypt_str disk_name;
444 
445 	/* The dirhash of this filename */
446 	f2fs_hash_t hash;
447 
448 #ifdef CONFIG_FS_ENCRYPTION
449 	/*
450 	 * For lookups in encrypted directories: either the buffer backing
451 	 * disk_name, or a buffer that holds the decoded no-key name.
452 	 */
453 	struct fscrypt_str crypto_buf;
454 #endif
455 #ifdef CONFIG_UNICODE
456 	/*
457 	 * For casefolded directories: the casefolded name, but it's left NULL
458 	 * if the original name is not valid Unicode, if the directory is both
459 	 * casefolded and encrypted and its encryption key is unavailable, or if
460 	 * the filesystem is doing an internal operation where usr_fname is also
461 	 * NULL.  In all these cases we fall back to treating the name as an
462 	 * opaque byte sequence.
463 	 */
464 	struct fscrypt_str cf_name;
465 #endif
466 };
467 
468 struct f2fs_dentry_ptr {
469 	struct inode *inode;
470 	void *bitmap;
471 	struct f2fs_dir_entry *dentry;
472 	__u8 (*filename)[F2FS_SLOT_LEN];
473 	int max;
474 	int nr_bitmap;
475 };
476 
477 static inline void make_dentry_ptr_block(struct inode *inode,
478 		struct f2fs_dentry_ptr *d, struct f2fs_dentry_block *t)
479 {
480 	d->inode = inode;
481 	d->max = NR_DENTRY_IN_BLOCK;
482 	d->nr_bitmap = SIZE_OF_DENTRY_BITMAP;
483 	d->bitmap = t->dentry_bitmap;
484 	d->dentry = t->dentry;
485 	d->filename = t->filename;
486 }
487 
488 static inline void make_dentry_ptr_inline(struct inode *inode,
489 					struct f2fs_dentry_ptr *d, void *t)
490 {
491 	int entry_cnt = NR_INLINE_DENTRY(inode);
492 	int bitmap_size = INLINE_DENTRY_BITMAP_SIZE(inode);
493 	int reserved_size = INLINE_RESERVED_SIZE(inode);
494 
495 	d->inode = inode;
496 	d->max = entry_cnt;
497 	d->nr_bitmap = bitmap_size;
498 	d->bitmap = t;
499 	d->dentry = t + bitmap_size + reserved_size;
500 	d->filename = t + bitmap_size + reserved_size +
501 					SIZE_OF_DIR_ENTRY * entry_cnt;
502 }
503 
504 /*
505  * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
506  * as its node offset to distinguish from index node blocks.
507  * But some bits are used to mark the node block.
508  */
509 #define XATTR_NODE_OFFSET	((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
510 				>> OFFSET_BIT_SHIFT)
511 enum {
512 	ALLOC_NODE,			/* allocate a new node page if needed */
513 	LOOKUP_NODE,			/* look up a node without readahead */
514 	LOOKUP_NODE_RA,			/*
515 					 * look up a node with readahead called
516 					 * by get_data_block.
517 					 */
518 };
519 
520 #define DEFAULT_RETRY_IO_COUNT	8	/* maximum retry read IO count */
521 
522 /* congestion wait timeout value, default: 20ms */
523 #define	DEFAULT_IO_TIMEOUT	(msecs_to_jiffies(20))
524 
525 /* maximum retry quota flush count */
526 #define DEFAULT_RETRY_QUOTA_FLUSH_COUNT		8
527 
528 #define F2FS_LINK_MAX	0xffffffff	/* maximum link count per file */
529 
530 #define MAX_DIR_RA_PAGES	4	/* maximum ra pages of dir */
531 
532 /* for in-memory extent cache entry */
533 #define F2FS_MIN_EXTENT_LEN	64	/* minimum extent length */
534 
535 /* number of extent info in extent cache we try to shrink */
536 #define EXTENT_CACHE_SHRINK_NUMBER	128
537 
538 struct rb_entry {
539 	struct rb_node rb_node;		/* rb node located in rb-tree */
540 	union {
541 		struct {
542 			unsigned int ofs;	/* start offset of the entry */
543 			unsigned int len;	/* length of the entry */
544 		};
545 		unsigned long long key;		/* 64-bits key */
546 	} __packed;
547 };
548 
549 struct extent_info {
550 	unsigned int fofs;		/* start offset in a file */
551 	unsigned int len;		/* length of the extent */
552 	u32 blk;			/* start block address of the extent */
553 };
554 
555 struct extent_node {
556 	struct rb_node rb_node;		/* rb node located in rb-tree */
557 	struct extent_info ei;		/* extent info */
558 	struct list_head list;		/* node in global extent list of sbi */
559 	struct extent_tree *et;		/* extent tree pointer */
560 };
561 
562 struct extent_tree {
563 	nid_t ino;			/* inode number */
564 	struct rb_root_cached root;	/* root of extent info rb-tree */
565 	struct extent_node *cached_en;	/* recently accessed extent node */
566 	struct extent_info largest;	/* largested extent info */
567 	struct list_head list;		/* to be used by sbi->zombie_list */
568 	rwlock_t lock;			/* protect extent info rb-tree */
569 	atomic_t node_cnt;		/* # of extent node in rb-tree*/
570 	bool largest_updated;		/* largest extent updated */
571 };
572 
573 /*
574  * This structure is taken from ext4_map_blocks.
575  *
576  * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
577  */
578 #define F2FS_MAP_NEW		(1 << BH_New)
579 #define F2FS_MAP_MAPPED		(1 << BH_Mapped)
580 #define F2FS_MAP_UNWRITTEN	(1 << BH_Unwritten)
581 #define F2FS_MAP_FLAGS		(F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
582 				F2FS_MAP_UNWRITTEN)
583 
584 struct f2fs_map_blocks {
585 	block_t m_pblk;
586 	block_t m_lblk;
587 	unsigned int m_len;
588 	unsigned int m_flags;
589 	pgoff_t *m_next_pgofs;		/* point next possible non-hole pgofs */
590 	pgoff_t *m_next_extent;		/* point to next possible extent */
591 	int m_seg_type;
592 	bool m_may_create;		/* indicate it is from write path */
593 };
594 
595 /* for flag in get_data_block */
596 enum {
597 	F2FS_GET_BLOCK_DEFAULT,
598 	F2FS_GET_BLOCK_FIEMAP,
599 	F2FS_GET_BLOCK_BMAP,
600 	F2FS_GET_BLOCK_DIO,
601 	F2FS_GET_BLOCK_PRE_DIO,
602 	F2FS_GET_BLOCK_PRE_AIO,
603 	F2FS_GET_BLOCK_PRECACHE,
604 };
605 
606 /*
607  * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
608  */
609 #define FADVISE_COLD_BIT	0x01
610 #define FADVISE_LOST_PINO_BIT	0x02
611 #define FADVISE_ENCRYPT_BIT	0x04
612 #define FADVISE_ENC_NAME_BIT	0x08
613 #define FADVISE_KEEP_SIZE_BIT	0x10
614 #define FADVISE_HOT_BIT		0x20
615 #define FADVISE_VERITY_BIT	0x40
616 
617 #define FADVISE_MODIFIABLE_BITS	(FADVISE_COLD_BIT | FADVISE_HOT_BIT)
618 
619 #define file_is_cold(inode)	is_file(inode, FADVISE_COLD_BIT)
620 #define file_wrong_pino(inode)	is_file(inode, FADVISE_LOST_PINO_BIT)
621 #define file_set_cold(inode)	set_file(inode, FADVISE_COLD_BIT)
622 #define file_lost_pino(inode)	set_file(inode, FADVISE_LOST_PINO_BIT)
623 #define file_clear_cold(inode)	clear_file(inode, FADVISE_COLD_BIT)
624 #define file_got_pino(inode)	clear_file(inode, FADVISE_LOST_PINO_BIT)
625 #define file_is_encrypt(inode)	is_file(inode, FADVISE_ENCRYPT_BIT)
626 #define file_set_encrypt(inode)	set_file(inode, FADVISE_ENCRYPT_BIT)
627 #define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
628 #define file_enc_name(inode)	is_file(inode, FADVISE_ENC_NAME_BIT)
629 #define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
630 #define file_keep_isize(inode)	is_file(inode, FADVISE_KEEP_SIZE_BIT)
631 #define file_set_keep_isize(inode) set_file(inode, FADVISE_KEEP_SIZE_BIT)
632 #define file_is_hot(inode)	is_file(inode, FADVISE_HOT_BIT)
633 #define file_set_hot(inode)	set_file(inode, FADVISE_HOT_BIT)
634 #define file_clear_hot(inode)	clear_file(inode, FADVISE_HOT_BIT)
635 #define file_is_verity(inode)	is_file(inode, FADVISE_VERITY_BIT)
636 #define file_set_verity(inode)	set_file(inode, FADVISE_VERITY_BIT)
637 
638 #define DEF_DIR_LEVEL		0
639 
640 enum {
641 	GC_FAILURE_PIN,
642 	GC_FAILURE_ATOMIC,
643 	MAX_GC_FAILURE
644 };
645 
646 /* used for f2fs_inode_info->flags */
647 enum {
648 	FI_NEW_INODE,		/* indicate newly allocated inode */
649 	FI_DIRTY_INODE,		/* indicate inode is dirty or not */
650 	FI_AUTO_RECOVER,	/* indicate inode is recoverable */
651 	FI_DIRTY_DIR,		/* indicate directory has dirty pages */
652 	FI_INC_LINK,		/* need to increment i_nlink */
653 	FI_ACL_MODE,		/* indicate acl mode */
654 	FI_NO_ALLOC,		/* should not allocate any blocks */
655 	FI_FREE_NID,		/* free allocated nide */
656 	FI_NO_EXTENT,		/* not to use the extent cache */
657 	FI_INLINE_XATTR,	/* used for inline xattr */
658 	FI_INLINE_DATA,		/* used for inline data*/
659 	FI_INLINE_DENTRY,	/* used for inline dentry */
660 	FI_APPEND_WRITE,	/* inode has appended data */
661 	FI_UPDATE_WRITE,	/* inode has in-place-update data */
662 	FI_NEED_IPU,		/* used for ipu per file */
663 	FI_ATOMIC_FILE,		/* indicate atomic file */
664 	FI_ATOMIC_COMMIT,	/* indicate the state of atomical committing */
665 	FI_VOLATILE_FILE,	/* indicate volatile file */
666 	FI_FIRST_BLOCK_WRITTEN,	/* indicate #0 data block was written */
667 	FI_DROP_CACHE,		/* drop dirty page cache */
668 	FI_DATA_EXIST,		/* indicate data exists */
669 	FI_INLINE_DOTS,		/* indicate inline dot dentries */
670 	FI_DO_DEFRAG,		/* indicate defragment is running */
671 	FI_DIRTY_FILE,		/* indicate regular/symlink has dirty pages */
672 	FI_NO_PREALLOC,		/* indicate skipped preallocated blocks */
673 	FI_HOT_DATA,		/* indicate file is hot */
674 	FI_EXTRA_ATTR,		/* indicate file has extra attribute */
675 	FI_PROJ_INHERIT,	/* indicate file inherits projectid */
676 	FI_PIN_FILE,		/* indicate file should not be gced */
677 	FI_ATOMIC_REVOKE_REQUEST, /* request to drop atomic data */
678 	FI_VERITY_IN_PROGRESS,	/* building fs-verity Merkle tree */
679 	FI_COMPRESSED_FILE,	/* indicate file's data can be compressed */
680 	FI_COMPRESS_CORRUPT,	/* indicate compressed cluster is corrupted */
681 	FI_MMAP_FILE,		/* indicate file was mmapped */
682 	FI_MAX,			/* max flag, never be used */
683 };
684 
685 struct f2fs_inode_info {
686 	struct inode vfs_inode;		/* serve a vfs inode */
687 	unsigned long i_flags;		/* keep an inode flags for ioctl */
688 	unsigned char i_advise;		/* use to give file attribute hints */
689 	unsigned char i_dir_level;	/* use for dentry level for large dir */
690 	unsigned int i_current_depth;	/* only for directory depth */
691 	/* for gc failure statistic */
692 	unsigned int i_gc_failures[MAX_GC_FAILURE];
693 	unsigned int i_pino;		/* parent inode number */
694 	umode_t i_acl_mode;		/* keep file acl mode temporarily */
695 
696 	/* Use below internally in f2fs*/
697 	unsigned long flags[BITS_TO_LONGS(FI_MAX)];	/* use to pass per-file flags */
698 	struct rw_semaphore i_sem;	/* protect fi info */
699 	atomic_t dirty_pages;		/* # of dirty pages */
700 	f2fs_hash_t chash;		/* hash value of given file name */
701 	unsigned int clevel;		/* maximum level of given file name */
702 	struct task_struct *task;	/* lookup and create consistency */
703 	struct task_struct *cp_task;	/* separate cp/wb IO stats*/
704 	nid_t i_xattr_nid;		/* node id that contains xattrs */
705 	loff_t	last_disk_size;		/* lastly written file size */
706 	spinlock_t i_size_lock;		/* protect last_disk_size */
707 
708 #ifdef CONFIG_QUOTA
709 	struct dquot *i_dquot[MAXQUOTAS];
710 
711 	/* quota space reservation, managed internally by quota code */
712 	qsize_t i_reserved_quota;
713 #endif
714 	struct list_head dirty_list;	/* dirty list for dirs and files */
715 	struct list_head gdirty_list;	/* linked in global dirty list */
716 	struct list_head inmem_ilist;	/* list for inmem inodes */
717 	struct list_head inmem_pages;	/* inmemory pages managed by f2fs */
718 	struct task_struct *inmem_task;	/* store inmemory task */
719 	struct mutex inmem_lock;	/* lock for inmemory pages */
720 	pgoff_t ra_offset;		/* ongoing readahead offset */
721 	struct extent_tree *extent_tree;	/* cached extent_tree entry */
722 
723 	/* avoid racing between foreground op and gc */
724 	struct rw_semaphore i_gc_rwsem[2];
725 	struct rw_semaphore i_mmap_sem;
726 	struct rw_semaphore i_xattr_sem; /* avoid racing between reading and changing EAs */
727 
728 	int i_extra_isize;		/* size of extra space located in i_addr */
729 	kprojid_t i_projid;		/* id for project quota */
730 	int i_inline_xattr_size;	/* inline xattr size */
731 	struct timespec64 i_crtime;	/* inode creation time */
732 	struct timespec64 i_disk_time[4];/* inode disk times */
733 
734 	/* for file compress */
735 	atomic_t i_compr_blocks;		/* # of compressed blocks */
736 	unsigned char i_compress_algorithm;	/* algorithm type */
737 	unsigned char i_log_cluster_size;	/* log of cluster size */
738 	unsigned short i_compress_flag;		/* compress flag */
739 	unsigned int i_cluster_size;		/* cluster size */
740 };
741 
742 static inline void get_extent_info(struct extent_info *ext,
743 					struct f2fs_extent *i_ext)
744 {
745 	ext->fofs = le32_to_cpu(i_ext->fofs);
746 	ext->blk = le32_to_cpu(i_ext->blk);
747 	ext->len = le32_to_cpu(i_ext->len);
748 }
749 
750 static inline void set_raw_extent(struct extent_info *ext,
751 					struct f2fs_extent *i_ext)
752 {
753 	i_ext->fofs = cpu_to_le32(ext->fofs);
754 	i_ext->blk = cpu_to_le32(ext->blk);
755 	i_ext->len = cpu_to_le32(ext->len);
756 }
757 
758 static inline void set_extent_info(struct extent_info *ei, unsigned int fofs,
759 						u32 blk, unsigned int len)
760 {
761 	ei->fofs = fofs;
762 	ei->blk = blk;
763 	ei->len = len;
764 }
765 
766 static inline bool __is_discard_mergeable(struct discard_info *back,
767 			struct discard_info *front, unsigned int max_len)
768 {
769 	return (back->lstart + back->len == front->lstart) &&
770 		(back->len + front->len <= max_len);
771 }
772 
773 static inline bool __is_discard_back_mergeable(struct discard_info *cur,
774 			struct discard_info *back, unsigned int max_len)
775 {
776 	return __is_discard_mergeable(back, cur, max_len);
777 }
778 
779 static inline bool __is_discard_front_mergeable(struct discard_info *cur,
780 			struct discard_info *front, unsigned int max_len)
781 {
782 	return __is_discard_mergeable(cur, front, max_len);
783 }
784 
785 static inline bool __is_extent_mergeable(struct extent_info *back,
786 						struct extent_info *front)
787 {
788 	return (back->fofs + back->len == front->fofs &&
789 			back->blk + back->len == front->blk);
790 }
791 
792 static inline bool __is_back_mergeable(struct extent_info *cur,
793 						struct extent_info *back)
794 {
795 	return __is_extent_mergeable(back, cur);
796 }
797 
798 static inline bool __is_front_mergeable(struct extent_info *cur,
799 						struct extent_info *front)
800 {
801 	return __is_extent_mergeable(cur, front);
802 }
803 
804 extern void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync);
805 static inline void __try_update_largest_extent(struct extent_tree *et,
806 						struct extent_node *en)
807 {
808 	if (en->ei.len > et->largest.len) {
809 		et->largest = en->ei;
810 		et->largest_updated = true;
811 	}
812 }
813 
814 /*
815  * For free nid management
816  */
817 enum nid_state {
818 	FREE_NID,		/* newly added to free nid list */
819 	PREALLOC_NID,		/* it is preallocated */
820 	MAX_NID_STATE,
821 };
822 
823 struct f2fs_nm_info {
824 	block_t nat_blkaddr;		/* base disk address of NAT */
825 	nid_t max_nid;			/* maximum possible node ids */
826 	nid_t available_nids;		/* # of available node ids */
827 	nid_t next_scan_nid;		/* the next nid to be scanned */
828 	unsigned int ram_thresh;	/* control the memory footprint */
829 	unsigned int ra_nid_pages;	/* # of nid pages to be readaheaded */
830 	unsigned int dirty_nats_ratio;	/* control dirty nats ratio threshold */
831 
832 	/* NAT cache management */
833 	struct radix_tree_root nat_root;/* root of the nat entry cache */
834 	struct radix_tree_root nat_set_root;/* root of the nat set cache */
835 	struct rw_semaphore nat_tree_lock;	/* protect nat_tree_lock */
836 	struct list_head nat_entries;	/* cached nat entry list (clean) */
837 	spinlock_t nat_list_lock;	/* protect clean nat entry list */
838 	unsigned int nat_cnt;		/* the # of cached nat entries */
839 	unsigned int dirty_nat_cnt;	/* total num of nat entries in set */
840 	unsigned int nat_blocks;	/* # of nat blocks */
841 
842 	/* free node ids management */
843 	struct radix_tree_root free_nid_root;/* root of the free_nid cache */
844 	struct list_head free_nid_list;		/* list for free nids excluding preallocated nids */
845 	unsigned int nid_cnt[MAX_NID_STATE];	/* the number of free node id */
846 	spinlock_t nid_list_lock;	/* protect nid lists ops */
847 	struct mutex build_lock;	/* lock for build free nids */
848 	unsigned char **free_nid_bitmap;
849 	unsigned char *nat_block_bitmap;
850 	unsigned short *free_nid_count;	/* free nid count of NAT block */
851 
852 	/* for checkpoint */
853 	char *nat_bitmap;		/* NAT bitmap pointer */
854 
855 	unsigned int nat_bits_blocks;	/* # of nat bits blocks */
856 	unsigned char *nat_bits;	/* NAT bits blocks */
857 	unsigned char *full_nat_bits;	/* full NAT pages */
858 	unsigned char *empty_nat_bits;	/* empty NAT pages */
859 #ifdef CONFIG_F2FS_CHECK_FS
860 	char *nat_bitmap_mir;		/* NAT bitmap mirror */
861 #endif
862 	int bitmap_size;		/* bitmap size */
863 };
864 
865 /*
866  * this structure is used as one of function parameters.
867  * all the information are dedicated to a given direct node block determined
868  * by the data offset in a file.
869  */
870 struct dnode_of_data {
871 	struct inode *inode;		/* vfs inode pointer */
872 	struct page *inode_page;	/* its inode page, NULL is possible */
873 	struct page *node_page;		/* cached direct node page */
874 	nid_t nid;			/* node id of the direct node block */
875 	unsigned int ofs_in_node;	/* data offset in the node page */
876 	bool inode_page_locked;		/* inode page is locked or not */
877 	bool node_changed;		/* is node block changed */
878 	char cur_level;			/* level of hole node page */
879 	char max_level;			/* level of current page located */
880 	block_t	data_blkaddr;		/* block address of the node block */
881 };
882 
883 static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
884 		struct page *ipage, struct page *npage, nid_t nid)
885 {
886 	memset(dn, 0, sizeof(*dn));
887 	dn->inode = inode;
888 	dn->inode_page = ipage;
889 	dn->node_page = npage;
890 	dn->nid = nid;
891 }
892 
893 /*
894  * For SIT manager
895  *
896  * By default, there are 6 active log areas across the whole main area.
897  * When considering hot and cold data separation to reduce cleaning overhead,
898  * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
899  * respectively.
900  * In the current design, you should not change the numbers intentionally.
901  * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
902  * logs individually according to the underlying devices. (default: 6)
903  * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
904  * data and 8 for node logs.
905  */
906 #define	NR_CURSEG_DATA_TYPE	(3)
907 #define NR_CURSEG_NODE_TYPE	(3)
908 #define NR_CURSEG_INMEM_TYPE	(2)
909 #define NR_CURSEG_PERSIST_TYPE	(NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
910 #define NR_CURSEG_TYPE		(NR_CURSEG_INMEM_TYPE + NR_CURSEG_PERSIST_TYPE)
911 
912 enum {
913 	CURSEG_HOT_DATA	= 0,	/* directory entry blocks */
914 	CURSEG_WARM_DATA,	/* data blocks */
915 	CURSEG_COLD_DATA,	/* multimedia or GCed data blocks */
916 	CURSEG_HOT_NODE,	/* direct node blocks of directory files */
917 	CURSEG_WARM_NODE,	/* direct node blocks of normal files */
918 	CURSEG_COLD_NODE,	/* indirect node blocks */
919 	NR_PERSISTENT_LOG,	/* number of persistent log */
920 	CURSEG_COLD_DATA_PINNED = NR_PERSISTENT_LOG,
921 				/* pinned file that needs consecutive block address */
922 	CURSEG_ALL_DATA_ATGC,	/* SSR alloctor in hot/warm/cold data area */
923 	NO_CHECK_TYPE,		/* number of persistent & inmem log */
924 };
925 
926 struct flush_cmd {
927 	struct completion wait;
928 	struct llist_node llnode;
929 	nid_t ino;
930 	int ret;
931 };
932 
933 struct flush_cmd_control {
934 	struct task_struct *f2fs_issue_flush;	/* flush thread */
935 	wait_queue_head_t flush_wait_queue;	/* waiting queue for wake-up */
936 	atomic_t issued_flush;			/* # of issued flushes */
937 	atomic_t queued_flush;			/* # of queued flushes */
938 	struct llist_head issue_list;		/* list for command issue */
939 	struct llist_node *dispatch_list;	/* list for command dispatch */
940 };
941 
942 struct f2fs_sm_info {
943 	struct sit_info *sit_info;		/* whole segment information */
944 	struct free_segmap_info *free_info;	/* free segment information */
945 	struct dirty_seglist_info *dirty_info;	/* dirty segment information */
946 	struct curseg_info *curseg_array;	/* active segment information */
947 
948 	struct rw_semaphore curseg_lock;	/* for preventing curseg change */
949 
950 	block_t seg0_blkaddr;		/* block address of 0'th segment */
951 	block_t main_blkaddr;		/* start block address of main area */
952 	block_t ssa_blkaddr;		/* start block address of SSA area */
953 
954 	unsigned int segment_count;	/* total # of segments */
955 	unsigned int main_segments;	/* # of segments in main area */
956 	unsigned int reserved_segments;	/* # of reserved segments */
957 	unsigned int ovp_segments;	/* # of overprovision segments */
958 
959 	/* a threshold to reclaim prefree segments */
960 	unsigned int rec_prefree_segments;
961 
962 	/* for batched trimming */
963 	unsigned int trim_sections;		/* # of sections to trim */
964 
965 	struct list_head sit_entry_set;	/* sit entry set list */
966 
967 	unsigned int ipu_policy;	/* in-place-update policy */
968 	unsigned int min_ipu_util;	/* in-place-update threshold */
969 	unsigned int min_fsync_blocks;	/* threshold for fsync */
970 	unsigned int min_seq_blocks;	/* threshold for sequential blocks */
971 	unsigned int min_hot_blocks;	/* threshold for hot block allocation */
972 	unsigned int min_ssr_sections;	/* threshold to trigger SSR allocation */
973 
974 	/* for flush command control */
975 	struct flush_cmd_control *fcc_info;
976 
977 	/* for discard command control */
978 	struct discard_cmd_control *dcc_info;
979 };
980 
981 /*
982  * For superblock
983  */
984 /*
985  * COUNT_TYPE for monitoring
986  *
987  * f2fs monitors the number of several block types such as on-writeback,
988  * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
989  */
990 #define WB_DATA_TYPE(p)	(__is_cp_guaranteed(p) ? F2FS_WB_CP_DATA : F2FS_WB_DATA)
991 enum count_type {
992 	F2FS_DIRTY_DENTS,
993 	F2FS_DIRTY_DATA,
994 	F2FS_DIRTY_QDATA,
995 	F2FS_DIRTY_NODES,
996 	F2FS_DIRTY_META,
997 	F2FS_INMEM_PAGES,
998 	F2FS_DIRTY_IMETA,
999 	F2FS_WB_CP_DATA,
1000 	F2FS_WB_DATA,
1001 	F2FS_RD_DATA,
1002 	F2FS_RD_NODE,
1003 	F2FS_RD_META,
1004 	F2FS_DIO_WRITE,
1005 	F2FS_DIO_READ,
1006 	NR_COUNT_TYPE,
1007 };
1008 
1009 /*
1010  * The below are the page types of bios used in submit_bio().
1011  * The available types are:
1012  * DATA			User data pages. It operates as async mode.
1013  * NODE			Node pages. It operates as async mode.
1014  * META			FS metadata pages such as SIT, NAT, CP.
1015  * NR_PAGE_TYPE		The number of page types.
1016  * META_FLUSH		Make sure the previous pages are written
1017  *			with waiting the bio's completion
1018  * ...			Only can be used with META.
1019  */
1020 #define PAGE_TYPE_OF_BIO(type)	((type) > META ? META : (type))
1021 enum page_type {
1022 	DATA,
1023 	NODE,
1024 	META,
1025 	NR_PAGE_TYPE,
1026 	META_FLUSH,
1027 	INMEM,		/* the below types are used by tracepoints only. */
1028 	INMEM_DROP,
1029 	INMEM_INVALIDATE,
1030 	INMEM_REVOKE,
1031 	IPU,
1032 	OPU,
1033 };
1034 
1035 enum temp_type {
1036 	HOT = 0,	/* must be zero for meta bio */
1037 	WARM,
1038 	COLD,
1039 	NR_TEMP_TYPE,
1040 };
1041 
1042 enum need_lock_type {
1043 	LOCK_REQ = 0,
1044 	LOCK_DONE,
1045 	LOCK_RETRY,
1046 };
1047 
1048 enum cp_reason_type {
1049 	CP_NO_NEEDED,
1050 	CP_NON_REGULAR,
1051 	CP_COMPRESSED,
1052 	CP_HARDLINK,
1053 	CP_SB_NEED_CP,
1054 	CP_WRONG_PINO,
1055 	CP_NO_SPC_ROLL,
1056 	CP_NODE_NEED_CP,
1057 	CP_FASTBOOT_MODE,
1058 	CP_SPEC_LOG_NUM,
1059 	CP_RECOVER_DIR,
1060 };
1061 
1062 enum iostat_type {
1063 	/* WRITE IO */
1064 	APP_DIRECT_IO,			/* app direct write IOs */
1065 	APP_BUFFERED_IO,		/* app buffered write IOs */
1066 	APP_WRITE_IO,			/* app write IOs */
1067 	APP_MAPPED_IO,			/* app mapped IOs */
1068 	FS_DATA_IO,			/* data IOs from kworker/fsync/reclaimer */
1069 	FS_NODE_IO,			/* node IOs from kworker/fsync/reclaimer */
1070 	FS_META_IO,			/* meta IOs from kworker/reclaimer */
1071 	FS_GC_DATA_IO,			/* data IOs from forground gc */
1072 	FS_GC_NODE_IO,			/* node IOs from forground gc */
1073 	FS_CP_DATA_IO,			/* data IOs from checkpoint */
1074 	FS_CP_NODE_IO,			/* node IOs from checkpoint */
1075 	FS_CP_META_IO,			/* meta IOs from checkpoint */
1076 
1077 	/* READ IO */
1078 	APP_DIRECT_READ_IO,		/* app direct read IOs */
1079 	APP_BUFFERED_READ_IO,		/* app buffered read IOs */
1080 	APP_READ_IO,			/* app read IOs */
1081 	APP_MAPPED_READ_IO,		/* app mapped read IOs */
1082 	FS_DATA_READ_IO,		/* data read IOs */
1083 	FS_GDATA_READ_IO,		/* data read IOs from background gc */
1084 	FS_CDATA_READ_IO,		/* compressed data read IOs */
1085 	FS_NODE_READ_IO,		/* node read IOs */
1086 	FS_META_READ_IO,		/* meta read IOs */
1087 
1088 	/* other */
1089 	FS_DISCARD,			/* discard */
1090 	NR_IO_TYPE,
1091 };
1092 
1093 struct f2fs_io_info {
1094 	struct f2fs_sb_info *sbi;	/* f2fs_sb_info pointer */
1095 	nid_t ino;		/* inode number */
1096 	enum page_type type;	/* contains DATA/NODE/META/META_FLUSH */
1097 	enum temp_type temp;	/* contains HOT/WARM/COLD */
1098 	int op;			/* contains REQ_OP_ */
1099 	int op_flags;		/* req_flag_bits */
1100 	block_t new_blkaddr;	/* new block address to be written */
1101 	block_t old_blkaddr;	/* old block address before Cow */
1102 	struct page *page;	/* page to be written */
1103 	struct page *encrypted_page;	/* encrypted page */
1104 	struct page *compressed_page;	/* compressed page */
1105 	struct list_head list;		/* serialize IOs */
1106 	bool submitted;		/* indicate IO submission */
1107 	int need_lock;		/* indicate we need to lock cp_rwsem */
1108 	bool in_list;		/* indicate fio is in io_list */
1109 	bool is_por;		/* indicate IO is from recovery or not */
1110 	bool retry;		/* need to reallocate block address */
1111 	int compr_blocks;	/* # of compressed block addresses */
1112 	bool encrypted;		/* indicate file is encrypted */
1113 	enum iostat_type io_type;	/* io type */
1114 	struct writeback_control *io_wbc; /* writeback control */
1115 	struct bio **bio;		/* bio for ipu */
1116 	sector_t *last_block;		/* last block number in bio */
1117 	unsigned char version;		/* version of the node */
1118 };
1119 
1120 struct bio_entry {
1121 	struct bio *bio;
1122 	struct list_head list;
1123 };
1124 
1125 #define is_read_io(rw) ((rw) == READ)
1126 struct f2fs_bio_info {
1127 	struct f2fs_sb_info *sbi;	/* f2fs superblock */
1128 	struct bio *bio;		/* bios to merge */
1129 	sector_t last_block_in_bio;	/* last block number */
1130 	struct f2fs_io_info fio;	/* store buffered io info. */
1131 	struct rw_semaphore io_rwsem;	/* blocking op for bio */
1132 	spinlock_t io_lock;		/* serialize DATA/NODE IOs */
1133 	struct list_head io_list;	/* track fios */
1134 	struct list_head bio_list;	/* bio entry list head */
1135 	struct rw_semaphore bio_list_lock;	/* lock to protect bio entry list */
1136 };
1137 
1138 #define FDEV(i)				(sbi->devs[i])
1139 #define RDEV(i)				(raw_super->devs[i])
1140 struct f2fs_dev_info {
1141 	struct block_device *bdev;
1142 	char path[MAX_PATH_LEN];
1143 	unsigned int total_segments;
1144 	block_t start_blk;
1145 	block_t end_blk;
1146 #ifdef CONFIG_BLK_DEV_ZONED
1147 	unsigned int nr_blkz;		/* Total number of zones */
1148 	unsigned long *blkz_seq;	/* Bitmap indicating sequential zones */
1149 	block_t *zone_capacity_blocks;  /* Array of zone capacity in blks */
1150 #endif
1151 };
1152 
1153 enum inode_type {
1154 	DIR_INODE,			/* for dirty dir inode */
1155 	FILE_INODE,			/* for dirty regular/symlink inode */
1156 	DIRTY_META,			/* for all dirtied inode metadata */
1157 	ATOMIC_FILE,			/* for all atomic files */
1158 	NR_INODE_TYPE,
1159 };
1160 
1161 /* for inner inode cache management */
1162 struct inode_management {
1163 	struct radix_tree_root ino_root;	/* ino entry array */
1164 	spinlock_t ino_lock;			/* for ino entry lock */
1165 	struct list_head ino_list;		/* inode list head */
1166 	unsigned long ino_num;			/* number of entries */
1167 };
1168 
1169 /* for GC_AT */
1170 struct atgc_management {
1171 	bool atgc_enabled;			/* ATGC is enabled or not */
1172 	struct rb_root_cached root;		/* root of victim rb-tree */
1173 	struct list_head victim_list;		/* linked with all victim entries */
1174 	unsigned int victim_count;		/* victim count in rb-tree */
1175 	unsigned int candidate_ratio;		/* candidate ratio */
1176 	unsigned int max_candidate_count;	/* max candidate count */
1177 	unsigned int age_weight;		/* age weight, vblock_weight = 100 - age_weight */
1178 	unsigned long long age_threshold;	/* age threshold */
1179 };
1180 
1181 /* For s_flag in struct f2fs_sb_info */
1182 enum {
1183 	SBI_IS_DIRTY,				/* dirty flag for checkpoint */
1184 	SBI_IS_CLOSE,				/* specify unmounting */
1185 	SBI_NEED_FSCK,				/* need fsck.f2fs to fix */
1186 	SBI_POR_DOING,				/* recovery is doing or not */
1187 	SBI_NEED_SB_WRITE,			/* need to recover superblock */
1188 	SBI_NEED_CP,				/* need to checkpoint */
1189 	SBI_IS_SHUTDOWN,			/* shutdown by ioctl */
1190 	SBI_IS_RECOVERED,			/* recovered orphan/data */
1191 	SBI_CP_DISABLED,			/* CP was disabled last mount */
1192 	SBI_CP_DISABLED_QUICK,			/* CP was disabled quickly */
1193 	SBI_QUOTA_NEED_FLUSH,			/* need to flush quota info in CP */
1194 	SBI_QUOTA_SKIP_FLUSH,			/* skip flushing quota in current CP */
1195 	SBI_QUOTA_NEED_REPAIR,			/* quota file may be corrupted */
1196 	SBI_IS_RESIZEFS,			/* resizefs is in process */
1197 };
1198 
1199 enum {
1200 	CP_TIME,
1201 	REQ_TIME,
1202 	DISCARD_TIME,
1203 	GC_TIME,
1204 	DISABLE_TIME,
1205 	UMOUNT_DISCARD_TIMEOUT,
1206 	MAX_TIME,
1207 };
1208 
1209 enum {
1210 	GC_NORMAL,
1211 	GC_IDLE_CB,
1212 	GC_IDLE_GREEDY,
1213 	GC_IDLE_AT,
1214 	GC_URGENT_HIGH,
1215 	GC_URGENT_LOW,
1216 };
1217 
1218 enum {
1219 	BGGC_MODE_ON,		/* background gc is on */
1220 	BGGC_MODE_OFF,		/* background gc is off */
1221 	BGGC_MODE_SYNC,		/*
1222 				 * background gc is on, migrating blocks
1223 				 * like foreground gc
1224 				 */
1225 };
1226 
1227 enum {
1228 	FS_MODE_ADAPTIVE,	/* use both lfs/ssr allocation */
1229 	FS_MODE_LFS,		/* use lfs allocation only */
1230 };
1231 
1232 enum {
1233 	WHINT_MODE_OFF,		/* not pass down write hints */
1234 	WHINT_MODE_USER,	/* try to pass down hints given by users */
1235 	WHINT_MODE_FS,		/* pass down hints with F2FS policy */
1236 };
1237 
1238 enum {
1239 	ALLOC_MODE_DEFAULT,	/* stay default */
1240 	ALLOC_MODE_REUSE,	/* reuse segments as much as possible */
1241 };
1242 
1243 enum fsync_mode {
1244 	FSYNC_MODE_POSIX,	/* fsync follows posix semantics */
1245 	FSYNC_MODE_STRICT,	/* fsync behaves in line with ext4 */
1246 	FSYNC_MODE_NOBARRIER,	/* fsync behaves nobarrier based on posix */
1247 };
1248 
1249 /*
1250  * this value is set in page as a private data which indicate that
1251  * the page is atomically written, and it is in inmem_pages list.
1252  */
1253 #define ATOMIC_WRITTEN_PAGE		((unsigned long)-1)
1254 #define DUMMY_WRITTEN_PAGE		((unsigned long)-2)
1255 
1256 #define IS_ATOMIC_WRITTEN_PAGE(page)			\
1257 		(page_private(page) == ATOMIC_WRITTEN_PAGE)
1258 #define IS_DUMMY_WRITTEN_PAGE(page)			\
1259 		(page_private(page) == DUMMY_WRITTEN_PAGE)
1260 
1261 #ifdef CONFIG_F2FS_IO_TRACE
1262 #define IS_IO_TRACED_PAGE(page)			\
1263 		(page_private(page) > 0 &&		\
1264 		 page_private(page) < (unsigned long)PID_MAX_LIMIT)
1265 #else
1266 #define IS_IO_TRACED_PAGE(page) (0)
1267 #endif
1268 
1269 /* For compression */
1270 enum compress_algorithm_type {
1271 	COMPRESS_LZO,
1272 	COMPRESS_LZ4,
1273 	COMPRESS_ZSTD,
1274 	COMPRESS_LZORLE,
1275 	COMPRESS_MAX,
1276 };
1277 
1278 enum compress_flag {
1279 	COMPRESS_CHKSUM,
1280 	COMPRESS_MAX_FLAG,
1281 };
1282 
1283 #define COMPRESS_DATA_RESERVED_SIZE		4
1284 struct compress_data {
1285 	__le32 clen;			/* compressed data size */
1286 	__le32 chksum;			/* compressed data chksum */
1287 	__le32 reserved[COMPRESS_DATA_RESERVED_SIZE];	/* reserved */
1288 	u8 cdata[];			/* compressed data */
1289 };
1290 
1291 #define COMPRESS_HEADER_SIZE	(sizeof(struct compress_data))
1292 
1293 #define F2FS_COMPRESSED_PAGE_MAGIC	0xF5F2C000
1294 
1295 /* compress context */
1296 struct compress_ctx {
1297 	struct inode *inode;		/* inode the context belong to */
1298 	pgoff_t cluster_idx;		/* cluster index number */
1299 	unsigned int cluster_size;	/* page count in cluster */
1300 	unsigned int log_cluster_size;	/* log of cluster size */
1301 	struct page **rpages;		/* pages store raw data in cluster */
1302 	unsigned int nr_rpages;		/* total page number in rpages */
1303 	struct page **cpages;		/* pages store compressed data in cluster */
1304 	unsigned int nr_cpages;		/* total page number in cpages */
1305 	void *rbuf;			/* virtual mapped address on rpages */
1306 	struct compress_data *cbuf;	/* virtual mapped address on cpages */
1307 	size_t rlen;			/* valid data length in rbuf */
1308 	size_t clen;			/* valid data length in cbuf */
1309 	void *private;			/* payload buffer for specified compression algorithm */
1310 	void *private2;			/* extra payload buffer */
1311 };
1312 
1313 /* compress context for write IO path */
1314 struct compress_io_ctx {
1315 	u32 magic;			/* magic number to indicate page is compressed */
1316 	struct inode *inode;		/* inode the context belong to */
1317 	struct page **rpages;		/* pages store raw data in cluster */
1318 	unsigned int nr_rpages;		/* total page number in rpages */
1319 	atomic_t pending_pages;		/* in-flight compressed page count */
1320 };
1321 
1322 /* decompress io context for read IO path */
1323 struct decompress_io_ctx {
1324 	u32 magic;			/* magic number to indicate page is compressed */
1325 	struct inode *inode;		/* inode the context belong to */
1326 	pgoff_t cluster_idx;		/* cluster index number */
1327 	unsigned int cluster_size;	/* page count in cluster */
1328 	unsigned int log_cluster_size;	/* log of cluster size */
1329 	struct page **rpages;		/* pages store raw data in cluster */
1330 	unsigned int nr_rpages;		/* total page number in rpages */
1331 	struct page **cpages;		/* pages store compressed data in cluster */
1332 	unsigned int nr_cpages;		/* total page number in cpages */
1333 	struct page **tpages;		/* temp pages to pad holes in cluster */
1334 	void *rbuf;			/* virtual mapped address on rpages */
1335 	struct compress_data *cbuf;	/* virtual mapped address on cpages */
1336 	size_t rlen;			/* valid data length in rbuf */
1337 	size_t clen;			/* valid data length in cbuf */
1338 	atomic_t pending_pages;		/* in-flight compressed page count */
1339 	bool failed;			/* indicate IO error during decompression */
1340 	void *private;			/* payload buffer for specified decompression algorithm */
1341 	void *private2;			/* extra payload buffer */
1342 };
1343 
1344 #define NULL_CLUSTER			((unsigned int)(~0))
1345 #define MIN_COMPRESS_LOG_SIZE		2
1346 #define MAX_COMPRESS_LOG_SIZE		8
1347 #define MAX_COMPRESS_WINDOW_SIZE(log_size)	((PAGE_SIZE) << (log_size))
1348 
1349 struct f2fs_sb_info {
1350 	struct super_block *sb;			/* pointer to VFS super block */
1351 	struct proc_dir_entry *s_proc;		/* proc entry */
1352 	struct f2fs_super_block *raw_super;	/* raw super block pointer */
1353 	struct rw_semaphore sb_lock;		/* lock for raw super block */
1354 	int valid_super_block;			/* valid super block no */
1355 	unsigned long s_flag;				/* flags for sbi */
1356 	struct mutex writepages;		/* mutex for writepages() */
1357 
1358 #ifdef CONFIG_BLK_DEV_ZONED
1359 	unsigned int blocks_per_blkz;		/* F2FS blocks per zone */
1360 	unsigned int log_blocks_per_blkz;	/* log2 F2FS blocks per zone */
1361 #endif
1362 
1363 	/* for node-related operations */
1364 	struct f2fs_nm_info *nm_info;		/* node manager */
1365 	struct inode *node_inode;		/* cache node blocks */
1366 
1367 	/* for segment-related operations */
1368 	struct f2fs_sm_info *sm_info;		/* segment manager */
1369 
1370 	/* for bio operations */
1371 	struct f2fs_bio_info *write_io[NR_PAGE_TYPE];	/* for write bios */
1372 	/* keep migration IO order for LFS mode */
1373 	struct rw_semaphore io_order_lock;
1374 	mempool_t *write_io_dummy;		/* Dummy pages */
1375 
1376 	/* for checkpoint */
1377 	struct f2fs_checkpoint *ckpt;		/* raw checkpoint pointer */
1378 	int cur_cp_pack;			/* remain current cp pack */
1379 	spinlock_t cp_lock;			/* for flag in ckpt */
1380 	struct inode *meta_inode;		/* cache meta blocks */
1381 	struct rw_semaphore cp_global_sem;	/* checkpoint procedure lock */
1382 	struct rw_semaphore cp_rwsem;		/* blocking FS operations */
1383 	struct rw_semaphore node_write;		/* locking node writes */
1384 	struct rw_semaphore node_change;	/* locking node change */
1385 	wait_queue_head_t cp_wait;
1386 	unsigned long last_time[MAX_TIME];	/* to store time in jiffies */
1387 	long interval_time[MAX_TIME];		/* to store thresholds */
1388 
1389 	struct inode_management im[MAX_INO_ENTRY];	/* manage inode cache */
1390 
1391 	spinlock_t fsync_node_lock;		/* for node entry lock */
1392 	struct list_head fsync_node_list;	/* node list head */
1393 	unsigned int fsync_seg_id;		/* sequence id */
1394 	unsigned int fsync_node_num;		/* number of node entries */
1395 
1396 	/* for orphan inode, use 0'th array */
1397 	unsigned int max_orphans;		/* max orphan inodes */
1398 
1399 	/* for inode management */
1400 	struct list_head inode_list[NR_INODE_TYPE];	/* dirty inode list */
1401 	spinlock_t inode_lock[NR_INODE_TYPE];	/* for dirty inode list lock */
1402 	struct mutex flush_lock;		/* for flush exclusion */
1403 
1404 	/* for extent tree cache */
1405 	struct radix_tree_root extent_tree_root;/* cache extent cache entries */
1406 	struct mutex extent_tree_lock;	/* locking extent radix tree */
1407 	struct list_head extent_list;		/* lru list for shrinker */
1408 	spinlock_t extent_lock;			/* locking extent lru list */
1409 	atomic_t total_ext_tree;		/* extent tree count */
1410 	struct list_head zombie_list;		/* extent zombie tree list */
1411 	atomic_t total_zombie_tree;		/* extent zombie tree count */
1412 	atomic_t total_ext_node;		/* extent info count */
1413 
1414 	/* basic filesystem units */
1415 	unsigned int log_sectors_per_block;	/* log2 sectors per block */
1416 	unsigned int log_blocksize;		/* log2 block size */
1417 	unsigned int blocksize;			/* block size */
1418 	unsigned int root_ino_num;		/* root inode number*/
1419 	unsigned int node_ino_num;		/* node inode number*/
1420 	unsigned int meta_ino_num;		/* meta inode number*/
1421 	unsigned int log_blocks_per_seg;	/* log2 blocks per segment */
1422 	unsigned int blocks_per_seg;		/* blocks per segment */
1423 	unsigned int segs_per_sec;		/* segments per section */
1424 	unsigned int secs_per_zone;		/* sections per zone */
1425 	unsigned int total_sections;		/* total section count */
1426 	unsigned int total_node_count;		/* total node block count */
1427 	unsigned int total_valid_node_count;	/* valid node block count */
1428 	loff_t max_file_blocks;			/* max block index of file */
1429 	int dir_level;				/* directory level */
1430 	int readdir_ra;				/* readahead inode in readdir */
1431 
1432 	block_t user_block_count;		/* # of user blocks */
1433 	block_t total_valid_block_count;	/* # of valid blocks */
1434 	block_t discard_blks;			/* discard command candidats */
1435 	block_t last_valid_block_count;		/* for recovery */
1436 	block_t reserved_blocks;		/* configurable reserved blocks */
1437 	block_t current_reserved_blocks;	/* current reserved blocks */
1438 
1439 	/* Additional tracking for no checkpoint mode */
1440 	block_t unusable_block_count;		/* # of blocks saved by last cp */
1441 
1442 	unsigned int nquota_files;		/* # of quota sysfile */
1443 	struct rw_semaphore quota_sem;		/* blocking cp for flags */
1444 
1445 	/* # of pages, see count_type */
1446 	atomic_t nr_pages[NR_COUNT_TYPE];
1447 	/* # of allocated blocks */
1448 	struct percpu_counter alloc_valid_block_count;
1449 
1450 	/* writeback control */
1451 	atomic_t wb_sync_req[META];	/* count # of WB_SYNC threads */
1452 
1453 	/* valid inode count */
1454 	struct percpu_counter total_valid_inode_count;
1455 
1456 	struct f2fs_mount_info mount_opt;	/* mount options */
1457 
1458 	/* for cleaning operations */
1459 	struct rw_semaphore gc_lock;		/*
1460 						 * semaphore for GC, avoid
1461 						 * race between GC and GC or CP
1462 						 */
1463 	struct f2fs_gc_kthread	*gc_thread;	/* GC thread */
1464 	struct atgc_management am;		/* atgc management */
1465 	unsigned int cur_victim_sec;		/* current victim section num */
1466 	unsigned int gc_mode;			/* current GC state */
1467 	unsigned int next_victim_seg[2];	/* next segment in victim section */
1468 
1469 	/* for skip statistic */
1470 	unsigned int atomic_files;		/* # of opened atomic file */
1471 	unsigned long long skipped_atomic_files[2];	/* FG_GC and BG_GC */
1472 	unsigned long long skipped_gc_rwsem;		/* FG_GC only */
1473 
1474 	/* threshold for gc trials on pinned files */
1475 	u64 gc_pin_file_threshold;
1476 	struct rw_semaphore pin_sem;
1477 
1478 	/* maximum # of trials to find a victim segment for SSR and GC */
1479 	unsigned int max_victim_search;
1480 	/* migration granularity of garbage collection, unit: segment */
1481 	unsigned int migration_granularity;
1482 
1483 	/*
1484 	 * for stat information.
1485 	 * one is for the LFS mode, and the other is for the SSR mode.
1486 	 */
1487 #ifdef CONFIG_F2FS_STAT_FS
1488 	struct f2fs_stat_info *stat_info;	/* FS status information */
1489 	atomic_t meta_count[META_MAX];		/* # of meta blocks */
1490 	unsigned int segment_count[2];		/* # of allocated segments */
1491 	unsigned int block_count[2];		/* # of allocated blocks */
1492 	atomic_t inplace_count;		/* # of inplace update */
1493 	atomic64_t total_hit_ext;		/* # of lookup extent cache */
1494 	atomic64_t read_hit_rbtree;		/* # of hit rbtree extent node */
1495 	atomic64_t read_hit_largest;		/* # of hit largest extent node */
1496 	atomic64_t read_hit_cached;		/* # of hit cached extent node */
1497 	atomic_t inline_xattr;			/* # of inline_xattr inodes */
1498 	atomic_t inline_inode;			/* # of inline_data inodes */
1499 	atomic_t inline_dir;			/* # of inline_dentry inodes */
1500 	atomic_t compr_inode;			/* # of compressed inodes */
1501 	atomic64_t compr_blocks;		/* # of compressed blocks */
1502 	atomic_t vw_cnt;			/* # of volatile writes */
1503 	atomic_t max_aw_cnt;			/* max # of atomic writes */
1504 	atomic_t max_vw_cnt;			/* max # of volatile writes */
1505 	unsigned int io_skip_bggc;		/* skip background gc for in-flight IO */
1506 	unsigned int other_skip_bggc;		/* skip background gc for other reasons */
1507 	unsigned int ndirty_inode[NR_INODE_TYPE];	/* # of dirty inodes */
1508 #endif
1509 	spinlock_t stat_lock;			/* lock for stat operations */
1510 
1511 	/* For app/fs IO statistics */
1512 	spinlock_t iostat_lock;
1513 	unsigned long long rw_iostat[NR_IO_TYPE];
1514 	unsigned long long prev_rw_iostat[NR_IO_TYPE];
1515 	bool iostat_enable;
1516 	unsigned long iostat_next_period;
1517 	unsigned int iostat_period_ms;
1518 
1519 	/* to attach REQ_META|REQ_FUA flags */
1520 	unsigned int data_io_flag;
1521 	unsigned int node_io_flag;
1522 
1523 	/* For sysfs suppport */
1524 	struct kobject s_kobj;
1525 	struct completion s_kobj_unregister;
1526 
1527 	/* For shrinker support */
1528 	struct list_head s_list;
1529 	int s_ndevs;				/* number of devices */
1530 	struct f2fs_dev_info *devs;		/* for device list */
1531 	unsigned int dirty_device;		/* for checkpoint data flush */
1532 	spinlock_t dev_lock;			/* protect dirty_device */
1533 	struct mutex umount_mutex;
1534 	unsigned int shrinker_run_no;
1535 
1536 	/* For write statistics */
1537 	u64 sectors_written_start;
1538 	u64 kbytes_written;
1539 
1540 	/* Reference to checksum algorithm driver via cryptoapi */
1541 	struct crypto_shash *s_chksum_driver;
1542 
1543 	/* Precomputed FS UUID checksum for seeding other checksums */
1544 	__u32 s_chksum_seed;
1545 
1546 	struct workqueue_struct *post_read_wq;	/* post read workqueue */
1547 
1548 	struct kmem_cache *inline_xattr_slab;	/* inline xattr entry */
1549 	unsigned int inline_xattr_slab_size;	/* default inline xattr slab size */
1550 
1551 #ifdef CONFIG_F2FS_FS_COMPRESSION
1552 	struct kmem_cache *page_array_slab;	/* page array entry */
1553 	unsigned int page_array_slab_size;	/* default page array slab size */
1554 #endif
1555 };
1556 
1557 struct f2fs_private_dio {
1558 	struct inode *inode;
1559 	void *orig_private;
1560 	bio_end_io_t *orig_end_io;
1561 	bool write;
1562 };
1563 
1564 #ifdef CONFIG_F2FS_FAULT_INJECTION
1565 #define f2fs_show_injection_info(sbi, type)					\
1566 	printk_ratelimited("%sF2FS-fs (%s) : inject %s in %s of %pS\n",	\
1567 		KERN_INFO, sbi->sb->s_id,				\
1568 		f2fs_fault_name[type],					\
1569 		__func__, __builtin_return_address(0))
1570 static inline bool time_to_inject(struct f2fs_sb_info *sbi, int type)
1571 {
1572 	struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info;
1573 
1574 	if (!ffi->inject_rate)
1575 		return false;
1576 
1577 	if (!IS_FAULT_SET(ffi, type))
1578 		return false;
1579 
1580 	atomic_inc(&ffi->inject_ops);
1581 	if (atomic_read(&ffi->inject_ops) >= ffi->inject_rate) {
1582 		atomic_set(&ffi->inject_ops, 0);
1583 		return true;
1584 	}
1585 	return false;
1586 }
1587 #else
1588 #define f2fs_show_injection_info(sbi, type) do { } while (0)
1589 static inline bool time_to_inject(struct f2fs_sb_info *sbi, int type)
1590 {
1591 	return false;
1592 }
1593 #endif
1594 
1595 /*
1596  * Test if the mounted volume is a multi-device volume.
1597  *   - For a single regular disk volume, sbi->s_ndevs is 0.
1598  *   - For a single zoned disk volume, sbi->s_ndevs is 1.
1599  *   - For a multi-device volume, sbi->s_ndevs is always 2 or more.
1600  */
1601 static inline bool f2fs_is_multi_device(struct f2fs_sb_info *sbi)
1602 {
1603 	return sbi->s_ndevs > 1;
1604 }
1605 
1606 /* For write statistics. Suppose sector size is 512 bytes,
1607  * and the return value is in kbytes. s is of struct f2fs_sb_info.
1608  */
1609 #define BD_PART_WRITTEN(s)						 \
1610 (((u64)part_stat_read((s)->sb->s_bdev->bd_part, sectors[STAT_WRITE]) -   \
1611 		(s)->sectors_written_start) >> 1)
1612 
1613 static inline void f2fs_update_time(struct f2fs_sb_info *sbi, int type)
1614 {
1615 	unsigned long now = jiffies;
1616 
1617 	sbi->last_time[type] = now;
1618 
1619 	/* DISCARD_TIME and GC_TIME are based on REQ_TIME */
1620 	if (type == REQ_TIME) {
1621 		sbi->last_time[DISCARD_TIME] = now;
1622 		sbi->last_time[GC_TIME] = now;
1623 	}
1624 }
1625 
1626 static inline bool f2fs_time_over(struct f2fs_sb_info *sbi, int type)
1627 {
1628 	unsigned long interval = sbi->interval_time[type] * HZ;
1629 
1630 	return time_after(jiffies, sbi->last_time[type] + interval);
1631 }
1632 
1633 static inline unsigned int f2fs_time_to_wait(struct f2fs_sb_info *sbi,
1634 						int type)
1635 {
1636 	unsigned long interval = sbi->interval_time[type] * HZ;
1637 	unsigned int wait_ms = 0;
1638 	long delta;
1639 
1640 	delta = (sbi->last_time[type] + interval) - jiffies;
1641 	if (delta > 0)
1642 		wait_ms = jiffies_to_msecs(delta);
1643 
1644 	return wait_ms;
1645 }
1646 
1647 /*
1648  * Inline functions
1649  */
1650 static inline u32 __f2fs_crc32(struct f2fs_sb_info *sbi, u32 crc,
1651 			      const void *address, unsigned int length)
1652 {
1653 	struct {
1654 		struct shash_desc shash;
1655 		char ctx[4];
1656 	} desc;
1657 	int err;
1658 
1659 	BUG_ON(crypto_shash_descsize(sbi->s_chksum_driver) != sizeof(desc.ctx));
1660 
1661 	desc.shash.tfm = sbi->s_chksum_driver;
1662 	*(u32 *)desc.ctx = crc;
1663 
1664 	err = crypto_shash_update(&desc.shash, address, length);
1665 	BUG_ON(err);
1666 
1667 	return *(u32 *)desc.ctx;
1668 }
1669 
1670 static inline u32 f2fs_crc32(struct f2fs_sb_info *sbi, const void *address,
1671 			   unsigned int length)
1672 {
1673 	return __f2fs_crc32(sbi, F2FS_SUPER_MAGIC, address, length);
1674 }
1675 
1676 static inline bool f2fs_crc_valid(struct f2fs_sb_info *sbi, __u32 blk_crc,
1677 				  void *buf, size_t buf_size)
1678 {
1679 	return f2fs_crc32(sbi, buf, buf_size) == blk_crc;
1680 }
1681 
1682 static inline u32 f2fs_chksum(struct f2fs_sb_info *sbi, u32 crc,
1683 			      const void *address, unsigned int length)
1684 {
1685 	return __f2fs_crc32(sbi, crc, address, length);
1686 }
1687 
1688 static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
1689 {
1690 	return container_of(inode, struct f2fs_inode_info, vfs_inode);
1691 }
1692 
1693 static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
1694 {
1695 	return sb->s_fs_info;
1696 }
1697 
1698 static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
1699 {
1700 	return F2FS_SB(inode->i_sb);
1701 }
1702 
1703 static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
1704 {
1705 	return F2FS_I_SB(mapping->host);
1706 }
1707 
1708 static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
1709 {
1710 	return F2FS_M_SB(page_file_mapping(page));
1711 }
1712 
1713 static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
1714 {
1715 	return (struct f2fs_super_block *)(sbi->raw_super);
1716 }
1717 
1718 static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
1719 {
1720 	return (struct f2fs_checkpoint *)(sbi->ckpt);
1721 }
1722 
1723 static inline struct f2fs_node *F2FS_NODE(struct page *page)
1724 {
1725 	return (struct f2fs_node *)page_address(page);
1726 }
1727 
1728 static inline struct f2fs_inode *F2FS_INODE(struct page *page)
1729 {
1730 	return &((struct f2fs_node *)page_address(page))->i;
1731 }
1732 
1733 static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
1734 {
1735 	return (struct f2fs_nm_info *)(sbi->nm_info);
1736 }
1737 
1738 static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
1739 {
1740 	return (struct f2fs_sm_info *)(sbi->sm_info);
1741 }
1742 
1743 static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
1744 {
1745 	return (struct sit_info *)(SM_I(sbi)->sit_info);
1746 }
1747 
1748 static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
1749 {
1750 	return (struct free_segmap_info *)(SM_I(sbi)->free_info);
1751 }
1752 
1753 static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
1754 {
1755 	return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
1756 }
1757 
1758 static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
1759 {
1760 	return sbi->meta_inode->i_mapping;
1761 }
1762 
1763 static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
1764 {
1765 	return sbi->node_inode->i_mapping;
1766 }
1767 
1768 static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
1769 {
1770 	return test_bit(type, &sbi->s_flag);
1771 }
1772 
1773 static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
1774 {
1775 	set_bit(type, &sbi->s_flag);
1776 }
1777 
1778 static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
1779 {
1780 	clear_bit(type, &sbi->s_flag);
1781 }
1782 
1783 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
1784 {
1785 	return le64_to_cpu(cp->checkpoint_ver);
1786 }
1787 
1788 static inline unsigned long f2fs_qf_ino(struct super_block *sb, int type)
1789 {
1790 	if (type < F2FS_MAX_QUOTAS)
1791 		return le32_to_cpu(F2FS_SB(sb)->raw_super->qf_ino[type]);
1792 	return 0;
1793 }
1794 
1795 static inline __u64 cur_cp_crc(struct f2fs_checkpoint *cp)
1796 {
1797 	size_t crc_offset = le32_to_cpu(cp->checksum_offset);
1798 	return le32_to_cpu(*((__le32 *)((unsigned char *)cp + crc_offset)));
1799 }
1800 
1801 static inline bool __is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1802 {
1803 	unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1804 
1805 	return ckpt_flags & f;
1806 }
1807 
1808 static inline bool is_set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1809 {
1810 	return __is_set_ckpt_flags(F2FS_CKPT(sbi), f);
1811 }
1812 
1813 static inline void __set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1814 {
1815 	unsigned int ckpt_flags;
1816 
1817 	ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1818 	ckpt_flags |= f;
1819 	cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1820 }
1821 
1822 static inline void set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1823 {
1824 	unsigned long flags;
1825 
1826 	spin_lock_irqsave(&sbi->cp_lock, flags);
1827 	__set_ckpt_flags(F2FS_CKPT(sbi), f);
1828 	spin_unlock_irqrestore(&sbi->cp_lock, flags);
1829 }
1830 
1831 static inline void __clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1832 {
1833 	unsigned int ckpt_flags;
1834 
1835 	ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1836 	ckpt_flags &= (~f);
1837 	cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1838 }
1839 
1840 static inline void clear_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1841 {
1842 	unsigned long flags;
1843 
1844 	spin_lock_irqsave(&sbi->cp_lock, flags);
1845 	__clear_ckpt_flags(F2FS_CKPT(sbi), f);
1846 	spin_unlock_irqrestore(&sbi->cp_lock, flags);
1847 }
1848 
1849 static inline void disable_nat_bits(struct f2fs_sb_info *sbi, bool lock)
1850 {
1851 	unsigned long flags;
1852 	unsigned char *nat_bits;
1853 
1854 	/*
1855 	 * In order to re-enable nat_bits we need to call fsck.f2fs by
1856 	 * set_sbi_flag(sbi, SBI_NEED_FSCK). But it may give huge cost,
1857 	 * so let's rely on regular fsck or unclean shutdown.
1858 	 */
1859 
1860 	if (lock)
1861 		spin_lock_irqsave(&sbi->cp_lock, flags);
1862 	__clear_ckpt_flags(F2FS_CKPT(sbi), CP_NAT_BITS_FLAG);
1863 	nat_bits = NM_I(sbi)->nat_bits;
1864 	NM_I(sbi)->nat_bits = NULL;
1865 	if (lock)
1866 		spin_unlock_irqrestore(&sbi->cp_lock, flags);
1867 
1868 	kvfree(nat_bits);
1869 }
1870 
1871 static inline bool enabled_nat_bits(struct f2fs_sb_info *sbi,
1872 					struct cp_control *cpc)
1873 {
1874 	bool set = is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG);
1875 
1876 	return (cpc) ? (cpc->reason & CP_UMOUNT) && set : set;
1877 }
1878 
1879 static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
1880 {
1881 	down_read(&sbi->cp_rwsem);
1882 }
1883 
1884 static inline int f2fs_trylock_op(struct f2fs_sb_info *sbi)
1885 {
1886 	return down_read_trylock(&sbi->cp_rwsem);
1887 }
1888 
1889 static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
1890 {
1891 	up_read(&sbi->cp_rwsem);
1892 }
1893 
1894 static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
1895 {
1896 	down_write(&sbi->cp_rwsem);
1897 }
1898 
1899 static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
1900 {
1901 	up_write(&sbi->cp_rwsem);
1902 }
1903 
1904 static inline int __get_cp_reason(struct f2fs_sb_info *sbi)
1905 {
1906 	int reason = CP_SYNC;
1907 
1908 	if (test_opt(sbi, FASTBOOT))
1909 		reason = CP_FASTBOOT;
1910 	if (is_sbi_flag_set(sbi, SBI_IS_CLOSE))
1911 		reason = CP_UMOUNT;
1912 	return reason;
1913 }
1914 
1915 static inline bool __remain_node_summaries(int reason)
1916 {
1917 	return (reason & (CP_UMOUNT | CP_FASTBOOT));
1918 }
1919 
1920 static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
1921 {
1922 	return (is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG) ||
1923 			is_set_ckpt_flags(sbi, CP_FASTBOOT_FLAG));
1924 }
1925 
1926 /*
1927  * Check whether the inode has blocks or not
1928  */
1929 static inline int F2FS_HAS_BLOCKS(struct inode *inode)
1930 {
1931 	block_t xattr_block = F2FS_I(inode)->i_xattr_nid ? 1 : 0;
1932 
1933 	return (inode->i_blocks >> F2FS_LOG_SECTORS_PER_BLOCK) > xattr_block;
1934 }
1935 
1936 static inline bool f2fs_has_xattr_block(unsigned int ofs)
1937 {
1938 	return ofs == XATTR_NODE_OFFSET;
1939 }
1940 
1941 static inline bool __allow_reserved_blocks(struct f2fs_sb_info *sbi,
1942 					struct inode *inode, bool cap)
1943 {
1944 	if (!inode)
1945 		return true;
1946 	if (!test_opt(sbi, RESERVE_ROOT))
1947 		return false;
1948 	if (IS_NOQUOTA(inode))
1949 		return true;
1950 	if (uid_eq(F2FS_OPTION(sbi).s_resuid, current_fsuid()))
1951 		return true;
1952 	if (!gid_eq(F2FS_OPTION(sbi).s_resgid, GLOBAL_ROOT_GID) &&
1953 					in_group_p(F2FS_OPTION(sbi).s_resgid))
1954 		return true;
1955 	if (cap && capable(CAP_SYS_RESOURCE))
1956 		return true;
1957 	return false;
1958 }
1959 
1960 static inline void f2fs_i_blocks_write(struct inode *, block_t, bool, bool);
1961 static inline int inc_valid_block_count(struct f2fs_sb_info *sbi,
1962 				 struct inode *inode, blkcnt_t *count)
1963 {
1964 	blkcnt_t diff = 0, release = 0;
1965 	block_t avail_user_block_count;
1966 	int ret;
1967 
1968 	ret = dquot_reserve_block(inode, *count);
1969 	if (ret)
1970 		return ret;
1971 
1972 	if (time_to_inject(sbi, FAULT_BLOCK)) {
1973 		f2fs_show_injection_info(sbi, FAULT_BLOCK);
1974 		release = *count;
1975 		goto release_quota;
1976 	}
1977 
1978 	/*
1979 	 * let's increase this in prior to actual block count change in order
1980 	 * for f2fs_sync_file to avoid data races when deciding checkpoint.
1981 	 */
1982 	percpu_counter_add(&sbi->alloc_valid_block_count, (*count));
1983 
1984 	spin_lock(&sbi->stat_lock);
1985 	sbi->total_valid_block_count += (block_t)(*count);
1986 	avail_user_block_count = sbi->user_block_count -
1987 					sbi->current_reserved_blocks;
1988 
1989 	if (!__allow_reserved_blocks(sbi, inode, true))
1990 		avail_user_block_count -= F2FS_OPTION(sbi).root_reserved_blocks;
1991 	if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
1992 		if (avail_user_block_count > sbi->unusable_block_count)
1993 			avail_user_block_count -= sbi->unusable_block_count;
1994 		else
1995 			avail_user_block_count = 0;
1996 	}
1997 	if (unlikely(sbi->total_valid_block_count > avail_user_block_count)) {
1998 		diff = sbi->total_valid_block_count - avail_user_block_count;
1999 		if (diff > *count)
2000 			diff = *count;
2001 		*count -= diff;
2002 		release = diff;
2003 		sbi->total_valid_block_count -= diff;
2004 		if (!*count) {
2005 			spin_unlock(&sbi->stat_lock);
2006 			goto enospc;
2007 		}
2008 	}
2009 	spin_unlock(&sbi->stat_lock);
2010 
2011 	if (unlikely(release)) {
2012 		percpu_counter_sub(&sbi->alloc_valid_block_count, release);
2013 		dquot_release_reservation_block(inode, release);
2014 	}
2015 	f2fs_i_blocks_write(inode, *count, true, true);
2016 	return 0;
2017 
2018 enospc:
2019 	percpu_counter_sub(&sbi->alloc_valid_block_count, release);
2020 release_quota:
2021 	dquot_release_reservation_block(inode, release);
2022 	return -ENOSPC;
2023 }
2024 
2025 __printf(2, 3)
2026 void f2fs_printk(struct f2fs_sb_info *sbi, const char *fmt, ...);
2027 
2028 #define f2fs_err(sbi, fmt, ...)						\
2029 	f2fs_printk(sbi, KERN_ERR fmt, ##__VA_ARGS__)
2030 #define f2fs_warn(sbi, fmt, ...)					\
2031 	f2fs_printk(sbi, KERN_WARNING fmt, ##__VA_ARGS__)
2032 #define f2fs_notice(sbi, fmt, ...)					\
2033 	f2fs_printk(sbi, KERN_NOTICE fmt, ##__VA_ARGS__)
2034 #define f2fs_info(sbi, fmt, ...)					\
2035 	f2fs_printk(sbi, KERN_INFO fmt, ##__VA_ARGS__)
2036 #define f2fs_debug(sbi, fmt, ...)					\
2037 	f2fs_printk(sbi, KERN_DEBUG fmt, ##__VA_ARGS__)
2038 
2039 static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
2040 						struct inode *inode,
2041 						block_t count)
2042 {
2043 	blkcnt_t sectors = count << F2FS_LOG_SECTORS_PER_BLOCK;
2044 
2045 	spin_lock(&sbi->stat_lock);
2046 	f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
2047 	sbi->total_valid_block_count -= (block_t)count;
2048 	if (sbi->reserved_blocks &&
2049 		sbi->current_reserved_blocks < sbi->reserved_blocks)
2050 		sbi->current_reserved_blocks = min(sbi->reserved_blocks,
2051 					sbi->current_reserved_blocks + count);
2052 	spin_unlock(&sbi->stat_lock);
2053 	if (unlikely(inode->i_blocks < sectors)) {
2054 		f2fs_warn(sbi, "Inconsistent i_blocks, ino:%lu, iblocks:%llu, sectors:%llu",
2055 			  inode->i_ino,
2056 			  (unsigned long long)inode->i_blocks,
2057 			  (unsigned long long)sectors);
2058 		set_sbi_flag(sbi, SBI_NEED_FSCK);
2059 		return;
2060 	}
2061 	f2fs_i_blocks_write(inode, count, false, true);
2062 }
2063 
2064 static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
2065 {
2066 	atomic_inc(&sbi->nr_pages[count_type]);
2067 
2068 	if (count_type == F2FS_DIRTY_DENTS ||
2069 			count_type == F2FS_DIRTY_NODES ||
2070 			count_type == F2FS_DIRTY_META ||
2071 			count_type == F2FS_DIRTY_QDATA ||
2072 			count_type == F2FS_DIRTY_IMETA)
2073 		set_sbi_flag(sbi, SBI_IS_DIRTY);
2074 }
2075 
2076 static inline void inode_inc_dirty_pages(struct inode *inode)
2077 {
2078 	atomic_inc(&F2FS_I(inode)->dirty_pages);
2079 	inc_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
2080 				F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
2081 	if (IS_NOQUOTA(inode))
2082 		inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_QDATA);
2083 }
2084 
2085 static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
2086 {
2087 	atomic_dec(&sbi->nr_pages[count_type]);
2088 }
2089 
2090 static inline void inode_dec_dirty_pages(struct inode *inode)
2091 {
2092 	if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
2093 			!S_ISLNK(inode->i_mode))
2094 		return;
2095 
2096 	atomic_dec(&F2FS_I(inode)->dirty_pages);
2097 	dec_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
2098 				F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
2099 	if (IS_NOQUOTA(inode))
2100 		dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_QDATA);
2101 }
2102 
2103 static inline s64 get_pages(struct f2fs_sb_info *sbi, int count_type)
2104 {
2105 	return atomic_read(&sbi->nr_pages[count_type]);
2106 }
2107 
2108 static inline int get_dirty_pages(struct inode *inode)
2109 {
2110 	return atomic_read(&F2FS_I(inode)->dirty_pages);
2111 }
2112 
2113 static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
2114 {
2115 	unsigned int pages_per_sec = sbi->segs_per_sec * sbi->blocks_per_seg;
2116 	unsigned int segs = (get_pages(sbi, block_type) + pages_per_sec - 1) >>
2117 						sbi->log_blocks_per_seg;
2118 
2119 	return segs / sbi->segs_per_sec;
2120 }
2121 
2122 static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
2123 {
2124 	return sbi->total_valid_block_count;
2125 }
2126 
2127 static inline block_t discard_blocks(struct f2fs_sb_info *sbi)
2128 {
2129 	return sbi->discard_blks;
2130 }
2131 
2132 static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
2133 {
2134 	struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
2135 
2136 	/* return NAT or SIT bitmap */
2137 	if (flag == NAT_BITMAP)
2138 		return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
2139 	else if (flag == SIT_BITMAP)
2140 		return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
2141 
2142 	return 0;
2143 }
2144 
2145 static inline block_t __cp_payload(struct f2fs_sb_info *sbi)
2146 {
2147 	return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
2148 }
2149 
2150 static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
2151 {
2152 	struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
2153 	int offset;
2154 
2155 	if (is_set_ckpt_flags(sbi, CP_LARGE_NAT_BITMAP_FLAG)) {
2156 		offset = (flag == SIT_BITMAP) ?
2157 			le32_to_cpu(ckpt->nat_ver_bitmap_bytesize) : 0;
2158 		/*
2159 		 * if large_nat_bitmap feature is enabled, leave checksum
2160 		 * protection for all nat/sit bitmaps.
2161 		 */
2162 		return &ckpt->sit_nat_version_bitmap + offset + sizeof(__le32);
2163 	}
2164 
2165 	if (__cp_payload(sbi) > 0) {
2166 		if (flag == NAT_BITMAP)
2167 			return &ckpt->sit_nat_version_bitmap;
2168 		else
2169 			return (unsigned char *)ckpt + F2FS_BLKSIZE;
2170 	} else {
2171 		offset = (flag == NAT_BITMAP) ?
2172 			le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
2173 		return &ckpt->sit_nat_version_bitmap + offset;
2174 	}
2175 }
2176 
2177 static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
2178 {
2179 	block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
2180 
2181 	if (sbi->cur_cp_pack == 2)
2182 		start_addr += sbi->blocks_per_seg;
2183 	return start_addr;
2184 }
2185 
2186 static inline block_t __start_cp_next_addr(struct f2fs_sb_info *sbi)
2187 {
2188 	block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
2189 
2190 	if (sbi->cur_cp_pack == 1)
2191 		start_addr += sbi->blocks_per_seg;
2192 	return start_addr;
2193 }
2194 
2195 static inline void __set_cp_next_pack(struct f2fs_sb_info *sbi)
2196 {
2197 	sbi->cur_cp_pack = (sbi->cur_cp_pack == 1) ? 2 : 1;
2198 }
2199 
2200 static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
2201 {
2202 	return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
2203 }
2204 
2205 static inline int inc_valid_node_count(struct f2fs_sb_info *sbi,
2206 					struct inode *inode, bool is_inode)
2207 {
2208 	block_t	valid_block_count;
2209 	unsigned int valid_node_count, user_block_count;
2210 	int err;
2211 
2212 	if (is_inode) {
2213 		if (inode) {
2214 			err = dquot_alloc_inode(inode);
2215 			if (err)
2216 				return err;
2217 		}
2218 	} else {
2219 		err = dquot_reserve_block(inode, 1);
2220 		if (err)
2221 			return err;
2222 	}
2223 
2224 	if (time_to_inject(sbi, FAULT_BLOCK)) {
2225 		f2fs_show_injection_info(sbi, FAULT_BLOCK);
2226 		goto enospc;
2227 	}
2228 
2229 	spin_lock(&sbi->stat_lock);
2230 
2231 	valid_block_count = sbi->total_valid_block_count +
2232 					sbi->current_reserved_blocks + 1;
2233 
2234 	if (!__allow_reserved_blocks(sbi, inode, false))
2235 		valid_block_count += F2FS_OPTION(sbi).root_reserved_blocks;
2236 	user_block_count = sbi->user_block_count;
2237 	if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
2238 		user_block_count -= sbi->unusable_block_count;
2239 
2240 	if (unlikely(valid_block_count > user_block_count)) {
2241 		spin_unlock(&sbi->stat_lock);
2242 		goto enospc;
2243 	}
2244 
2245 	valid_node_count = sbi->total_valid_node_count + 1;
2246 	if (unlikely(valid_node_count > sbi->total_node_count)) {
2247 		spin_unlock(&sbi->stat_lock);
2248 		goto enospc;
2249 	}
2250 
2251 	sbi->total_valid_node_count++;
2252 	sbi->total_valid_block_count++;
2253 	spin_unlock(&sbi->stat_lock);
2254 
2255 	if (inode) {
2256 		if (is_inode)
2257 			f2fs_mark_inode_dirty_sync(inode, true);
2258 		else
2259 			f2fs_i_blocks_write(inode, 1, true, true);
2260 	}
2261 
2262 	percpu_counter_inc(&sbi->alloc_valid_block_count);
2263 	return 0;
2264 
2265 enospc:
2266 	if (is_inode) {
2267 		if (inode)
2268 			dquot_free_inode(inode);
2269 	} else {
2270 		dquot_release_reservation_block(inode, 1);
2271 	}
2272 	return -ENOSPC;
2273 }
2274 
2275 static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
2276 					struct inode *inode, bool is_inode)
2277 {
2278 	spin_lock(&sbi->stat_lock);
2279 
2280 	f2fs_bug_on(sbi, !sbi->total_valid_block_count);
2281 	f2fs_bug_on(sbi, !sbi->total_valid_node_count);
2282 
2283 	sbi->total_valid_node_count--;
2284 	sbi->total_valid_block_count--;
2285 	if (sbi->reserved_blocks &&
2286 		sbi->current_reserved_blocks < sbi->reserved_blocks)
2287 		sbi->current_reserved_blocks++;
2288 
2289 	spin_unlock(&sbi->stat_lock);
2290 
2291 	if (is_inode) {
2292 		dquot_free_inode(inode);
2293 	} else {
2294 		if (unlikely(inode->i_blocks == 0)) {
2295 			f2fs_warn(sbi, "dec_valid_node_count: inconsistent i_blocks, ino:%lu, iblocks:%llu",
2296 				  inode->i_ino,
2297 				  (unsigned long long)inode->i_blocks);
2298 			set_sbi_flag(sbi, SBI_NEED_FSCK);
2299 			return;
2300 		}
2301 		f2fs_i_blocks_write(inode, 1, false, true);
2302 	}
2303 }
2304 
2305 static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
2306 {
2307 	return sbi->total_valid_node_count;
2308 }
2309 
2310 static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
2311 {
2312 	percpu_counter_inc(&sbi->total_valid_inode_count);
2313 }
2314 
2315 static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
2316 {
2317 	percpu_counter_dec(&sbi->total_valid_inode_count);
2318 }
2319 
2320 static inline s64 valid_inode_count(struct f2fs_sb_info *sbi)
2321 {
2322 	return percpu_counter_sum_positive(&sbi->total_valid_inode_count);
2323 }
2324 
2325 static inline struct page *f2fs_grab_cache_page(struct address_space *mapping,
2326 						pgoff_t index, bool for_write)
2327 {
2328 	struct page *page;
2329 
2330 	if (IS_ENABLED(CONFIG_F2FS_FAULT_INJECTION)) {
2331 		if (!for_write)
2332 			page = find_get_page_flags(mapping, index,
2333 							FGP_LOCK | FGP_ACCESSED);
2334 		else
2335 			page = find_lock_page(mapping, index);
2336 		if (page)
2337 			return page;
2338 
2339 		if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_ALLOC)) {
2340 			f2fs_show_injection_info(F2FS_M_SB(mapping),
2341 							FAULT_PAGE_ALLOC);
2342 			return NULL;
2343 		}
2344 	}
2345 
2346 	if (!for_write)
2347 		return grab_cache_page(mapping, index);
2348 	return grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS);
2349 }
2350 
2351 static inline struct page *f2fs_pagecache_get_page(
2352 				struct address_space *mapping, pgoff_t index,
2353 				int fgp_flags, gfp_t gfp_mask)
2354 {
2355 	if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_GET)) {
2356 		f2fs_show_injection_info(F2FS_M_SB(mapping), FAULT_PAGE_GET);
2357 		return NULL;
2358 	}
2359 
2360 	return pagecache_get_page(mapping, index, fgp_flags, gfp_mask);
2361 }
2362 
2363 static inline void f2fs_copy_page(struct page *src, struct page *dst)
2364 {
2365 	char *src_kaddr = kmap(src);
2366 	char *dst_kaddr = kmap(dst);
2367 
2368 	memcpy(dst_kaddr, src_kaddr, PAGE_SIZE);
2369 	kunmap(dst);
2370 	kunmap(src);
2371 }
2372 
2373 static inline void f2fs_put_page(struct page *page, int unlock)
2374 {
2375 	if (!page)
2376 		return;
2377 
2378 	if (unlock) {
2379 		f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
2380 		unlock_page(page);
2381 	}
2382 	put_page(page);
2383 }
2384 
2385 static inline void f2fs_put_dnode(struct dnode_of_data *dn)
2386 {
2387 	if (dn->node_page)
2388 		f2fs_put_page(dn->node_page, 1);
2389 	if (dn->inode_page && dn->node_page != dn->inode_page)
2390 		f2fs_put_page(dn->inode_page, 0);
2391 	dn->node_page = NULL;
2392 	dn->inode_page = NULL;
2393 }
2394 
2395 static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
2396 					size_t size)
2397 {
2398 	return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
2399 }
2400 
2401 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
2402 						gfp_t flags)
2403 {
2404 	void *entry;
2405 
2406 	entry = kmem_cache_alloc(cachep, flags);
2407 	if (!entry)
2408 		entry = kmem_cache_alloc(cachep, flags | __GFP_NOFAIL);
2409 	return entry;
2410 }
2411 
2412 static inline bool is_inflight_io(struct f2fs_sb_info *sbi, int type)
2413 {
2414 	if (get_pages(sbi, F2FS_RD_DATA) || get_pages(sbi, F2FS_RD_NODE) ||
2415 		get_pages(sbi, F2FS_RD_META) || get_pages(sbi, F2FS_WB_DATA) ||
2416 		get_pages(sbi, F2FS_WB_CP_DATA) ||
2417 		get_pages(sbi, F2FS_DIO_READ) ||
2418 		get_pages(sbi, F2FS_DIO_WRITE))
2419 		return true;
2420 
2421 	if (type != DISCARD_TIME && SM_I(sbi) && SM_I(sbi)->dcc_info &&
2422 			atomic_read(&SM_I(sbi)->dcc_info->queued_discard))
2423 		return true;
2424 
2425 	if (SM_I(sbi) && SM_I(sbi)->fcc_info &&
2426 			atomic_read(&SM_I(sbi)->fcc_info->queued_flush))
2427 		return true;
2428 	return false;
2429 }
2430 
2431 static inline bool is_idle(struct f2fs_sb_info *sbi, int type)
2432 {
2433 	if (sbi->gc_mode == GC_URGENT_HIGH)
2434 		return true;
2435 
2436 	if (is_inflight_io(sbi, type))
2437 		return false;
2438 
2439 	if (sbi->gc_mode == GC_URGENT_LOW &&
2440 			(type == DISCARD_TIME || type == GC_TIME))
2441 		return true;
2442 
2443 	return f2fs_time_over(sbi, type);
2444 }
2445 
2446 static inline void f2fs_radix_tree_insert(struct radix_tree_root *root,
2447 				unsigned long index, void *item)
2448 {
2449 	while (radix_tree_insert(root, index, item))
2450 		cond_resched();
2451 }
2452 
2453 #define RAW_IS_INODE(p)	((p)->footer.nid == (p)->footer.ino)
2454 
2455 static inline bool IS_INODE(struct page *page)
2456 {
2457 	struct f2fs_node *p = F2FS_NODE(page);
2458 
2459 	return RAW_IS_INODE(p);
2460 }
2461 
2462 static inline int offset_in_addr(struct f2fs_inode *i)
2463 {
2464 	return (i->i_inline & F2FS_EXTRA_ATTR) ?
2465 			(le16_to_cpu(i->i_extra_isize) / sizeof(__le32)) : 0;
2466 }
2467 
2468 static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
2469 {
2470 	return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
2471 }
2472 
2473 static inline int f2fs_has_extra_attr(struct inode *inode);
2474 static inline block_t data_blkaddr(struct inode *inode,
2475 			struct page *node_page, unsigned int offset)
2476 {
2477 	struct f2fs_node *raw_node;
2478 	__le32 *addr_array;
2479 	int base = 0;
2480 	bool is_inode = IS_INODE(node_page);
2481 
2482 	raw_node = F2FS_NODE(node_page);
2483 
2484 	if (is_inode) {
2485 		if (!inode)
2486 			/* from GC path only */
2487 			base = offset_in_addr(&raw_node->i);
2488 		else if (f2fs_has_extra_attr(inode))
2489 			base = get_extra_isize(inode);
2490 	}
2491 
2492 	addr_array = blkaddr_in_node(raw_node);
2493 	return le32_to_cpu(addr_array[base + offset]);
2494 }
2495 
2496 static inline block_t f2fs_data_blkaddr(struct dnode_of_data *dn)
2497 {
2498 	return data_blkaddr(dn->inode, dn->node_page, dn->ofs_in_node);
2499 }
2500 
2501 static inline int f2fs_test_bit(unsigned int nr, char *addr)
2502 {
2503 	int mask;
2504 
2505 	addr += (nr >> 3);
2506 	mask = 1 << (7 - (nr & 0x07));
2507 	return mask & *addr;
2508 }
2509 
2510 static inline void f2fs_set_bit(unsigned int nr, char *addr)
2511 {
2512 	int mask;
2513 
2514 	addr += (nr >> 3);
2515 	mask = 1 << (7 - (nr & 0x07));
2516 	*addr |= mask;
2517 }
2518 
2519 static inline void f2fs_clear_bit(unsigned int nr, char *addr)
2520 {
2521 	int mask;
2522 
2523 	addr += (nr >> 3);
2524 	mask = 1 << (7 - (nr & 0x07));
2525 	*addr &= ~mask;
2526 }
2527 
2528 static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
2529 {
2530 	int mask;
2531 	int ret;
2532 
2533 	addr += (nr >> 3);
2534 	mask = 1 << (7 - (nr & 0x07));
2535 	ret = mask & *addr;
2536 	*addr |= mask;
2537 	return ret;
2538 }
2539 
2540 static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
2541 {
2542 	int mask;
2543 	int ret;
2544 
2545 	addr += (nr >> 3);
2546 	mask = 1 << (7 - (nr & 0x07));
2547 	ret = mask & *addr;
2548 	*addr &= ~mask;
2549 	return ret;
2550 }
2551 
2552 static inline void f2fs_change_bit(unsigned int nr, char *addr)
2553 {
2554 	int mask;
2555 
2556 	addr += (nr >> 3);
2557 	mask = 1 << (7 - (nr & 0x07));
2558 	*addr ^= mask;
2559 }
2560 
2561 /*
2562  * On-disk inode flags (f2fs_inode::i_flags)
2563  */
2564 #define F2FS_COMPR_FL			0x00000004 /* Compress file */
2565 #define F2FS_SYNC_FL			0x00000008 /* Synchronous updates */
2566 #define F2FS_IMMUTABLE_FL		0x00000010 /* Immutable file */
2567 #define F2FS_APPEND_FL			0x00000020 /* writes to file may only append */
2568 #define F2FS_NODUMP_FL			0x00000040 /* do not dump file */
2569 #define F2FS_NOATIME_FL			0x00000080 /* do not update atime */
2570 #define F2FS_NOCOMP_FL			0x00000400 /* Don't compress */
2571 #define F2FS_INDEX_FL			0x00001000 /* hash-indexed directory */
2572 #define F2FS_DIRSYNC_FL			0x00010000 /* dirsync behaviour (directories only) */
2573 #define F2FS_PROJINHERIT_FL		0x20000000 /* Create with parents projid */
2574 #define F2FS_CASEFOLD_FL		0x40000000 /* Casefolded file */
2575 
2576 /* Flags that should be inherited by new inodes from their parent. */
2577 #define F2FS_FL_INHERITED (F2FS_SYNC_FL | F2FS_NODUMP_FL | F2FS_NOATIME_FL | \
2578 			   F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL | \
2579 			   F2FS_CASEFOLD_FL | F2FS_COMPR_FL | F2FS_NOCOMP_FL)
2580 
2581 /* Flags that are appropriate for regular files (all but dir-specific ones). */
2582 #define F2FS_REG_FLMASK		(~(F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL | \
2583 				F2FS_CASEFOLD_FL))
2584 
2585 /* Flags that are appropriate for non-directories/regular files. */
2586 #define F2FS_OTHER_FLMASK	(F2FS_NODUMP_FL | F2FS_NOATIME_FL)
2587 
2588 static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags)
2589 {
2590 	if (S_ISDIR(mode))
2591 		return flags;
2592 	else if (S_ISREG(mode))
2593 		return flags & F2FS_REG_FLMASK;
2594 	else
2595 		return flags & F2FS_OTHER_FLMASK;
2596 }
2597 
2598 static inline void __mark_inode_dirty_flag(struct inode *inode,
2599 						int flag, bool set)
2600 {
2601 	switch (flag) {
2602 	case FI_INLINE_XATTR:
2603 	case FI_INLINE_DATA:
2604 	case FI_INLINE_DENTRY:
2605 	case FI_NEW_INODE:
2606 		if (set)
2607 			return;
2608 		fallthrough;
2609 	case FI_DATA_EXIST:
2610 	case FI_INLINE_DOTS:
2611 	case FI_PIN_FILE:
2612 		f2fs_mark_inode_dirty_sync(inode, true);
2613 	}
2614 }
2615 
2616 static inline void set_inode_flag(struct inode *inode, int flag)
2617 {
2618 	set_bit(flag, F2FS_I(inode)->flags);
2619 	__mark_inode_dirty_flag(inode, flag, true);
2620 }
2621 
2622 static inline int is_inode_flag_set(struct inode *inode, int flag)
2623 {
2624 	return test_bit(flag, F2FS_I(inode)->flags);
2625 }
2626 
2627 static inline void clear_inode_flag(struct inode *inode, int flag)
2628 {
2629 	clear_bit(flag, F2FS_I(inode)->flags);
2630 	__mark_inode_dirty_flag(inode, flag, false);
2631 }
2632 
2633 static inline bool f2fs_verity_in_progress(struct inode *inode)
2634 {
2635 	return IS_ENABLED(CONFIG_FS_VERITY) &&
2636 	       is_inode_flag_set(inode, FI_VERITY_IN_PROGRESS);
2637 }
2638 
2639 static inline void set_acl_inode(struct inode *inode, umode_t mode)
2640 {
2641 	F2FS_I(inode)->i_acl_mode = mode;
2642 	set_inode_flag(inode, FI_ACL_MODE);
2643 	f2fs_mark_inode_dirty_sync(inode, false);
2644 }
2645 
2646 static inline void f2fs_i_links_write(struct inode *inode, bool inc)
2647 {
2648 	if (inc)
2649 		inc_nlink(inode);
2650 	else
2651 		drop_nlink(inode);
2652 	f2fs_mark_inode_dirty_sync(inode, true);
2653 }
2654 
2655 static inline void f2fs_i_blocks_write(struct inode *inode,
2656 					block_t diff, bool add, bool claim)
2657 {
2658 	bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
2659 	bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);
2660 
2661 	/* add = 1, claim = 1 should be dquot_reserve_block in pair */
2662 	if (add) {
2663 		if (claim)
2664 			dquot_claim_block(inode, diff);
2665 		else
2666 			dquot_alloc_block_nofail(inode, diff);
2667 	} else {
2668 		dquot_free_block(inode, diff);
2669 	}
2670 
2671 	f2fs_mark_inode_dirty_sync(inode, true);
2672 	if (clean || recover)
2673 		set_inode_flag(inode, FI_AUTO_RECOVER);
2674 }
2675 
2676 static inline void f2fs_i_size_write(struct inode *inode, loff_t i_size)
2677 {
2678 	bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
2679 	bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);
2680 
2681 	if (i_size_read(inode) == i_size)
2682 		return;
2683 
2684 	i_size_write(inode, i_size);
2685 	f2fs_mark_inode_dirty_sync(inode, true);
2686 	if (clean || recover)
2687 		set_inode_flag(inode, FI_AUTO_RECOVER);
2688 }
2689 
2690 static inline void f2fs_i_depth_write(struct inode *inode, unsigned int depth)
2691 {
2692 	F2FS_I(inode)->i_current_depth = depth;
2693 	f2fs_mark_inode_dirty_sync(inode, true);
2694 }
2695 
2696 static inline void f2fs_i_gc_failures_write(struct inode *inode,
2697 					unsigned int count)
2698 {
2699 	F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN] = count;
2700 	f2fs_mark_inode_dirty_sync(inode, true);
2701 }
2702 
2703 static inline void f2fs_i_xnid_write(struct inode *inode, nid_t xnid)
2704 {
2705 	F2FS_I(inode)->i_xattr_nid = xnid;
2706 	f2fs_mark_inode_dirty_sync(inode, true);
2707 }
2708 
2709 static inline void f2fs_i_pino_write(struct inode *inode, nid_t pino)
2710 {
2711 	F2FS_I(inode)->i_pino = pino;
2712 	f2fs_mark_inode_dirty_sync(inode, true);
2713 }
2714 
2715 static inline void get_inline_info(struct inode *inode, struct f2fs_inode *ri)
2716 {
2717 	struct f2fs_inode_info *fi = F2FS_I(inode);
2718 
2719 	if (ri->i_inline & F2FS_INLINE_XATTR)
2720 		set_bit(FI_INLINE_XATTR, fi->flags);
2721 	if (ri->i_inline & F2FS_INLINE_DATA)
2722 		set_bit(FI_INLINE_DATA, fi->flags);
2723 	if (ri->i_inline & F2FS_INLINE_DENTRY)
2724 		set_bit(FI_INLINE_DENTRY, fi->flags);
2725 	if (ri->i_inline & F2FS_DATA_EXIST)
2726 		set_bit(FI_DATA_EXIST, fi->flags);
2727 	if (ri->i_inline & F2FS_INLINE_DOTS)
2728 		set_bit(FI_INLINE_DOTS, fi->flags);
2729 	if (ri->i_inline & F2FS_EXTRA_ATTR)
2730 		set_bit(FI_EXTRA_ATTR, fi->flags);
2731 	if (ri->i_inline & F2FS_PIN_FILE)
2732 		set_bit(FI_PIN_FILE, fi->flags);
2733 }
2734 
2735 static inline void set_raw_inline(struct inode *inode, struct f2fs_inode *ri)
2736 {
2737 	ri->i_inline = 0;
2738 
2739 	if (is_inode_flag_set(inode, FI_INLINE_XATTR))
2740 		ri->i_inline |= F2FS_INLINE_XATTR;
2741 	if (is_inode_flag_set(inode, FI_INLINE_DATA))
2742 		ri->i_inline |= F2FS_INLINE_DATA;
2743 	if (is_inode_flag_set(inode, FI_INLINE_DENTRY))
2744 		ri->i_inline |= F2FS_INLINE_DENTRY;
2745 	if (is_inode_flag_set(inode, FI_DATA_EXIST))
2746 		ri->i_inline |= F2FS_DATA_EXIST;
2747 	if (is_inode_flag_set(inode, FI_INLINE_DOTS))
2748 		ri->i_inline |= F2FS_INLINE_DOTS;
2749 	if (is_inode_flag_set(inode, FI_EXTRA_ATTR))
2750 		ri->i_inline |= F2FS_EXTRA_ATTR;
2751 	if (is_inode_flag_set(inode, FI_PIN_FILE))
2752 		ri->i_inline |= F2FS_PIN_FILE;
2753 }
2754 
2755 static inline int f2fs_has_extra_attr(struct inode *inode)
2756 {
2757 	return is_inode_flag_set(inode, FI_EXTRA_ATTR);
2758 }
2759 
2760 static inline int f2fs_has_inline_xattr(struct inode *inode)
2761 {
2762 	return is_inode_flag_set(inode, FI_INLINE_XATTR);
2763 }
2764 
2765 static inline int f2fs_compressed_file(struct inode *inode)
2766 {
2767 	return S_ISREG(inode->i_mode) &&
2768 		is_inode_flag_set(inode, FI_COMPRESSED_FILE);
2769 }
2770 
2771 static inline unsigned int addrs_per_inode(struct inode *inode)
2772 {
2773 	unsigned int addrs = CUR_ADDRS_PER_INODE(inode) -
2774 				get_inline_xattr_addrs(inode);
2775 
2776 	if (!f2fs_compressed_file(inode))
2777 		return addrs;
2778 	return ALIGN_DOWN(addrs, F2FS_I(inode)->i_cluster_size);
2779 }
2780 
2781 static inline unsigned int addrs_per_block(struct inode *inode)
2782 {
2783 	if (!f2fs_compressed_file(inode))
2784 		return DEF_ADDRS_PER_BLOCK;
2785 	return ALIGN_DOWN(DEF_ADDRS_PER_BLOCK, F2FS_I(inode)->i_cluster_size);
2786 }
2787 
2788 static inline void *inline_xattr_addr(struct inode *inode, struct page *page)
2789 {
2790 	struct f2fs_inode *ri = F2FS_INODE(page);
2791 
2792 	return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
2793 					get_inline_xattr_addrs(inode)]);
2794 }
2795 
2796 static inline int inline_xattr_size(struct inode *inode)
2797 {
2798 	if (f2fs_has_inline_xattr(inode))
2799 		return get_inline_xattr_addrs(inode) * sizeof(__le32);
2800 	return 0;
2801 }
2802 
2803 static inline int f2fs_has_inline_data(struct inode *inode)
2804 {
2805 	return is_inode_flag_set(inode, FI_INLINE_DATA);
2806 }
2807 
2808 static inline int f2fs_exist_data(struct inode *inode)
2809 {
2810 	return is_inode_flag_set(inode, FI_DATA_EXIST);
2811 }
2812 
2813 static inline int f2fs_has_inline_dots(struct inode *inode)
2814 {
2815 	return is_inode_flag_set(inode, FI_INLINE_DOTS);
2816 }
2817 
2818 static inline int f2fs_is_mmap_file(struct inode *inode)
2819 {
2820 	return is_inode_flag_set(inode, FI_MMAP_FILE);
2821 }
2822 
2823 static inline bool f2fs_is_pinned_file(struct inode *inode)
2824 {
2825 	return is_inode_flag_set(inode, FI_PIN_FILE);
2826 }
2827 
2828 static inline bool f2fs_is_atomic_file(struct inode *inode)
2829 {
2830 	return is_inode_flag_set(inode, FI_ATOMIC_FILE);
2831 }
2832 
2833 static inline bool f2fs_is_commit_atomic_write(struct inode *inode)
2834 {
2835 	return is_inode_flag_set(inode, FI_ATOMIC_COMMIT);
2836 }
2837 
2838 static inline bool f2fs_is_volatile_file(struct inode *inode)
2839 {
2840 	return is_inode_flag_set(inode, FI_VOLATILE_FILE);
2841 }
2842 
2843 static inline bool f2fs_is_first_block_written(struct inode *inode)
2844 {
2845 	return is_inode_flag_set(inode, FI_FIRST_BLOCK_WRITTEN);
2846 }
2847 
2848 static inline bool f2fs_is_drop_cache(struct inode *inode)
2849 {
2850 	return is_inode_flag_set(inode, FI_DROP_CACHE);
2851 }
2852 
2853 static inline void *inline_data_addr(struct inode *inode, struct page *page)
2854 {
2855 	struct f2fs_inode *ri = F2FS_INODE(page);
2856 	int extra_size = get_extra_isize(inode);
2857 
2858 	return (void *)&(ri->i_addr[extra_size + DEF_INLINE_RESERVED_SIZE]);
2859 }
2860 
2861 static inline int f2fs_has_inline_dentry(struct inode *inode)
2862 {
2863 	return is_inode_flag_set(inode, FI_INLINE_DENTRY);
2864 }
2865 
2866 static inline int is_file(struct inode *inode, int type)
2867 {
2868 	return F2FS_I(inode)->i_advise & type;
2869 }
2870 
2871 static inline void set_file(struct inode *inode, int type)
2872 {
2873 	F2FS_I(inode)->i_advise |= type;
2874 	f2fs_mark_inode_dirty_sync(inode, true);
2875 }
2876 
2877 static inline void clear_file(struct inode *inode, int type)
2878 {
2879 	F2FS_I(inode)->i_advise &= ~type;
2880 	f2fs_mark_inode_dirty_sync(inode, true);
2881 }
2882 
2883 static inline bool f2fs_is_time_consistent(struct inode *inode)
2884 {
2885 	if (!timespec64_equal(F2FS_I(inode)->i_disk_time, &inode->i_atime))
2886 		return false;
2887 	if (!timespec64_equal(F2FS_I(inode)->i_disk_time + 1, &inode->i_ctime))
2888 		return false;
2889 	if (!timespec64_equal(F2FS_I(inode)->i_disk_time + 2, &inode->i_mtime))
2890 		return false;
2891 	if (!timespec64_equal(F2FS_I(inode)->i_disk_time + 3,
2892 						&F2FS_I(inode)->i_crtime))
2893 		return false;
2894 	return true;
2895 }
2896 
2897 static inline bool f2fs_skip_inode_update(struct inode *inode, int dsync)
2898 {
2899 	bool ret;
2900 
2901 	if (dsync) {
2902 		struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2903 
2904 		spin_lock(&sbi->inode_lock[DIRTY_META]);
2905 		ret = list_empty(&F2FS_I(inode)->gdirty_list);
2906 		spin_unlock(&sbi->inode_lock[DIRTY_META]);
2907 		return ret;
2908 	}
2909 	if (!is_inode_flag_set(inode, FI_AUTO_RECOVER) ||
2910 			file_keep_isize(inode) ||
2911 			i_size_read(inode) & ~PAGE_MASK)
2912 		return false;
2913 
2914 	if (!f2fs_is_time_consistent(inode))
2915 		return false;
2916 
2917 	spin_lock(&F2FS_I(inode)->i_size_lock);
2918 	ret = F2FS_I(inode)->last_disk_size == i_size_read(inode);
2919 	spin_unlock(&F2FS_I(inode)->i_size_lock);
2920 
2921 	return ret;
2922 }
2923 
2924 static inline bool f2fs_readonly(struct super_block *sb)
2925 {
2926 	return sb_rdonly(sb);
2927 }
2928 
2929 static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
2930 {
2931 	return is_set_ckpt_flags(sbi, CP_ERROR_FLAG);
2932 }
2933 
2934 static inline bool is_dot_dotdot(const u8 *name, size_t len)
2935 {
2936 	if (len == 1 && name[0] == '.')
2937 		return true;
2938 
2939 	if (len == 2 && name[0] == '.' && name[1] == '.')
2940 		return true;
2941 
2942 	return false;
2943 }
2944 
2945 static inline bool f2fs_may_extent_tree(struct inode *inode)
2946 {
2947 	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2948 
2949 	if (!test_opt(sbi, EXTENT_CACHE) ||
2950 			is_inode_flag_set(inode, FI_NO_EXTENT) ||
2951 			is_inode_flag_set(inode, FI_COMPRESSED_FILE))
2952 		return false;
2953 
2954 	/*
2955 	 * for recovered files during mount do not create extents
2956 	 * if shrinker is not registered.
2957 	 */
2958 	if (list_empty(&sbi->s_list))
2959 		return false;
2960 
2961 	return S_ISREG(inode->i_mode);
2962 }
2963 
2964 static inline void *f2fs_kmalloc(struct f2fs_sb_info *sbi,
2965 					size_t size, gfp_t flags)
2966 {
2967 	if (time_to_inject(sbi, FAULT_KMALLOC)) {
2968 		f2fs_show_injection_info(sbi, FAULT_KMALLOC);
2969 		return NULL;
2970 	}
2971 
2972 	return kmalloc(size, flags);
2973 }
2974 
2975 static inline void *f2fs_kzalloc(struct f2fs_sb_info *sbi,
2976 					size_t size, gfp_t flags)
2977 {
2978 	return f2fs_kmalloc(sbi, size, flags | __GFP_ZERO);
2979 }
2980 
2981 static inline void *f2fs_kvmalloc(struct f2fs_sb_info *sbi,
2982 					size_t size, gfp_t flags)
2983 {
2984 	if (time_to_inject(sbi, FAULT_KVMALLOC)) {
2985 		f2fs_show_injection_info(sbi, FAULT_KVMALLOC);
2986 		return NULL;
2987 	}
2988 
2989 	return kvmalloc(size, flags);
2990 }
2991 
2992 static inline void *f2fs_kvzalloc(struct f2fs_sb_info *sbi,
2993 					size_t size, gfp_t flags)
2994 {
2995 	return f2fs_kvmalloc(sbi, size, flags | __GFP_ZERO);
2996 }
2997 
2998 static inline int get_extra_isize(struct inode *inode)
2999 {
3000 	return F2FS_I(inode)->i_extra_isize / sizeof(__le32);
3001 }
3002 
3003 static inline int get_inline_xattr_addrs(struct inode *inode)
3004 {
3005 	return F2FS_I(inode)->i_inline_xattr_size;
3006 }
3007 
3008 #define f2fs_get_inode_mode(i) \
3009 	((is_inode_flag_set(i, FI_ACL_MODE)) ? \
3010 	 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
3011 
3012 #define F2FS_TOTAL_EXTRA_ATTR_SIZE			\
3013 	(offsetof(struct f2fs_inode, i_extra_end) -	\
3014 	offsetof(struct f2fs_inode, i_extra_isize))	\
3015 
3016 #define F2FS_OLD_ATTRIBUTE_SIZE	(offsetof(struct f2fs_inode, i_addr))
3017 #define F2FS_FITS_IN_INODE(f2fs_inode, extra_isize, field)		\
3018 		((offsetof(typeof(*(f2fs_inode)), field) +	\
3019 		sizeof((f2fs_inode)->field))			\
3020 		<= (F2FS_OLD_ATTRIBUTE_SIZE + (extra_isize)))	\
3021 
3022 #define DEFAULT_IOSTAT_PERIOD_MS	3000
3023 #define MIN_IOSTAT_PERIOD_MS		100
3024 /* maximum period of iostat tracing is 1 day */
3025 #define MAX_IOSTAT_PERIOD_MS		8640000
3026 
3027 static inline void f2fs_reset_iostat(struct f2fs_sb_info *sbi)
3028 {
3029 	int i;
3030 
3031 	spin_lock(&sbi->iostat_lock);
3032 	for (i = 0; i < NR_IO_TYPE; i++) {
3033 		sbi->rw_iostat[i] = 0;
3034 		sbi->prev_rw_iostat[i] = 0;
3035 	}
3036 	spin_unlock(&sbi->iostat_lock);
3037 }
3038 
3039 extern void f2fs_record_iostat(struct f2fs_sb_info *sbi);
3040 
3041 static inline void f2fs_update_iostat(struct f2fs_sb_info *sbi,
3042 			enum iostat_type type, unsigned long long io_bytes)
3043 {
3044 	if (!sbi->iostat_enable)
3045 		return;
3046 	spin_lock(&sbi->iostat_lock);
3047 	sbi->rw_iostat[type] += io_bytes;
3048 
3049 	if (type == APP_WRITE_IO || type == APP_DIRECT_IO)
3050 		sbi->rw_iostat[APP_BUFFERED_IO] =
3051 			sbi->rw_iostat[APP_WRITE_IO] -
3052 			sbi->rw_iostat[APP_DIRECT_IO];
3053 
3054 	if (type == APP_READ_IO || type == APP_DIRECT_READ_IO)
3055 		sbi->rw_iostat[APP_BUFFERED_READ_IO] =
3056 			sbi->rw_iostat[APP_READ_IO] -
3057 			sbi->rw_iostat[APP_DIRECT_READ_IO];
3058 	spin_unlock(&sbi->iostat_lock);
3059 
3060 	f2fs_record_iostat(sbi);
3061 }
3062 
3063 #define __is_large_section(sbi)		((sbi)->segs_per_sec > 1)
3064 
3065 #define __is_meta_io(fio) (PAGE_TYPE_OF_BIO((fio)->type) == META)
3066 
3067 bool f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi,
3068 					block_t blkaddr, int type);
3069 static inline void verify_blkaddr(struct f2fs_sb_info *sbi,
3070 					block_t blkaddr, int type)
3071 {
3072 	if (!f2fs_is_valid_blkaddr(sbi, blkaddr, type)) {
3073 		f2fs_err(sbi, "invalid blkaddr: %u, type: %d, run fsck to fix.",
3074 			 blkaddr, type);
3075 		f2fs_bug_on(sbi, 1);
3076 	}
3077 }
3078 
3079 static inline bool __is_valid_data_blkaddr(block_t blkaddr)
3080 {
3081 	if (blkaddr == NEW_ADDR || blkaddr == NULL_ADDR ||
3082 			blkaddr == COMPRESS_ADDR)
3083 		return false;
3084 	return true;
3085 }
3086 
3087 static inline void f2fs_set_page_private(struct page *page,
3088 						unsigned long data)
3089 {
3090 	if (PagePrivate(page))
3091 		return;
3092 
3093 	attach_page_private(page, (void *)data);
3094 }
3095 
3096 static inline void f2fs_clear_page_private(struct page *page)
3097 {
3098 	detach_page_private(page);
3099 }
3100 
3101 /*
3102  * file.c
3103  */
3104 int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync);
3105 void f2fs_truncate_data_blocks(struct dnode_of_data *dn);
3106 int f2fs_do_truncate_blocks(struct inode *inode, u64 from, bool lock);
3107 int f2fs_truncate_blocks(struct inode *inode, u64 from, bool lock);
3108 int f2fs_truncate(struct inode *inode);
3109 int f2fs_getattr(const struct path *path, struct kstat *stat,
3110 			u32 request_mask, unsigned int flags);
3111 int f2fs_setattr(struct dentry *dentry, struct iattr *attr);
3112 int f2fs_truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end);
3113 void f2fs_truncate_data_blocks_range(struct dnode_of_data *dn, int count);
3114 int f2fs_precache_extents(struct inode *inode);
3115 long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
3116 long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
3117 int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid);
3118 int f2fs_pin_file_control(struct inode *inode, bool inc);
3119 
3120 /*
3121  * inode.c
3122  */
3123 void f2fs_set_inode_flags(struct inode *inode);
3124 bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page);
3125 void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page);
3126 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino);
3127 struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino);
3128 int f2fs_try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink);
3129 void f2fs_update_inode(struct inode *inode, struct page *node_page);
3130 void f2fs_update_inode_page(struct inode *inode);
3131 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc);
3132 void f2fs_evict_inode(struct inode *inode);
3133 void f2fs_handle_failed_inode(struct inode *inode);
3134 
3135 /*
3136  * namei.c
3137  */
3138 int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
3139 							bool hot, bool set);
3140 struct dentry *f2fs_get_parent(struct dentry *child);
3141 
3142 /*
3143  * dir.c
3144  */
3145 unsigned char f2fs_get_de_type(struct f2fs_dir_entry *de);
3146 int f2fs_init_casefolded_name(const struct inode *dir,
3147 			      struct f2fs_filename *fname);
3148 int f2fs_setup_filename(struct inode *dir, const struct qstr *iname,
3149 			int lookup, struct f2fs_filename *fname);
3150 int f2fs_prepare_lookup(struct inode *dir, struct dentry *dentry,
3151 			struct f2fs_filename *fname);
3152 void f2fs_free_filename(struct f2fs_filename *fname);
3153 struct f2fs_dir_entry *f2fs_find_target_dentry(const struct f2fs_dentry_ptr *d,
3154 			const struct f2fs_filename *fname, int *max_slots);
3155 int f2fs_fill_dentries(struct dir_context *ctx, struct f2fs_dentry_ptr *d,
3156 			unsigned int start_pos, struct fscrypt_str *fstr);
3157 void f2fs_do_make_empty_dir(struct inode *inode, struct inode *parent,
3158 			struct f2fs_dentry_ptr *d);
3159 struct page *f2fs_init_inode_metadata(struct inode *inode, struct inode *dir,
3160 			const struct f2fs_filename *fname, struct page *dpage);
3161 void f2fs_update_parent_metadata(struct inode *dir, struct inode *inode,
3162 			unsigned int current_depth);
3163 int f2fs_room_for_filename(const void *bitmap, int slots, int max_slots);
3164 void f2fs_drop_nlink(struct inode *dir, struct inode *inode);
3165 struct f2fs_dir_entry *__f2fs_find_entry(struct inode *dir,
3166 					 const struct f2fs_filename *fname,
3167 					 struct page **res_page);
3168 struct f2fs_dir_entry *f2fs_find_entry(struct inode *dir,
3169 			const struct qstr *child, struct page **res_page);
3170 struct f2fs_dir_entry *f2fs_parent_dir(struct inode *dir, struct page **p);
3171 ino_t f2fs_inode_by_name(struct inode *dir, const struct qstr *qstr,
3172 			struct page **page);
3173 void f2fs_set_link(struct inode *dir, struct f2fs_dir_entry *de,
3174 			struct page *page, struct inode *inode);
3175 bool f2fs_has_enough_room(struct inode *dir, struct page *ipage,
3176 			  const struct f2fs_filename *fname);
3177 void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *d,
3178 			const struct fscrypt_str *name, f2fs_hash_t name_hash,
3179 			unsigned int bit_pos);
3180 int f2fs_add_regular_entry(struct inode *dir, const struct f2fs_filename *fname,
3181 			struct inode *inode, nid_t ino, umode_t mode);
3182 int f2fs_add_dentry(struct inode *dir, const struct f2fs_filename *fname,
3183 			struct inode *inode, nid_t ino, umode_t mode);
3184 int f2fs_do_add_link(struct inode *dir, const struct qstr *name,
3185 			struct inode *inode, nid_t ino, umode_t mode);
3186 void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page,
3187 			struct inode *dir, struct inode *inode);
3188 int f2fs_do_tmpfile(struct inode *inode, struct inode *dir);
3189 bool f2fs_empty_dir(struct inode *dir);
3190 
3191 static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
3192 {
3193 	return f2fs_do_add_link(d_inode(dentry->d_parent), &dentry->d_name,
3194 				inode, inode->i_ino, inode->i_mode);
3195 }
3196 
3197 /*
3198  * super.c
3199  */
3200 int f2fs_inode_dirtied(struct inode *inode, bool sync);
3201 void f2fs_inode_synced(struct inode *inode);
3202 int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly);
3203 int f2fs_quota_sync(struct super_block *sb, int type);
3204 void f2fs_quota_off_umount(struct super_block *sb);
3205 int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover);
3206 int f2fs_sync_fs(struct super_block *sb, int sync);
3207 int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi);
3208 
3209 /*
3210  * hash.c
3211  */
3212 void f2fs_hash_filename(const struct inode *dir, struct f2fs_filename *fname);
3213 
3214 /*
3215  * node.c
3216  */
3217 struct dnode_of_data;
3218 struct node_info;
3219 
3220 int f2fs_check_nid_range(struct f2fs_sb_info *sbi, nid_t nid);
3221 bool f2fs_available_free_memory(struct f2fs_sb_info *sbi, int type);
3222 bool f2fs_in_warm_node_list(struct f2fs_sb_info *sbi, struct page *page);
3223 void f2fs_init_fsync_node_info(struct f2fs_sb_info *sbi);
3224 void f2fs_del_fsync_node_entry(struct f2fs_sb_info *sbi, struct page *page);
3225 void f2fs_reset_fsync_node_info(struct f2fs_sb_info *sbi);
3226 int f2fs_need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid);
3227 bool f2fs_is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid);
3228 bool f2fs_need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino);
3229 int f2fs_get_node_info(struct f2fs_sb_info *sbi, nid_t nid,
3230 						struct node_info *ni);
3231 pgoff_t f2fs_get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs);
3232 int f2fs_get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode);
3233 int f2fs_truncate_inode_blocks(struct inode *inode, pgoff_t from);
3234 int f2fs_truncate_xattr_node(struct inode *inode);
3235 int f2fs_wait_on_node_pages_writeback(struct f2fs_sb_info *sbi,
3236 					unsigned int seq_id);
3237 int f2fs_remove_inode_page(struct inode *inode);
3238 struct page *f2fs_new_inode_page(struct inode *inode);
3239 struct page *f2fs_new_node_page(struct dnode_of_data *dn, unsigned int ofs);
3240 void f2fs_ra_node_page(struct f2fs_sb_info *sbi, nid_t nid);
3241 struct page *f2fs_get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid);
3242 struct page *f2fs_get_node_page_ra(struct page *parent, int start);
3243 int f2fs_move_node_page(struct page *node_page, int gc_type);
3244 void f2fs_flush_inline_data(struct f2fs_sb_info *sbi);
3245 int f2fs_fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode,
3246 			struct writeback_control *wbc, bool atomic,
3247 			unsigned int *seq_id);
3248 int f2fs_sync_node_pages(struct f2fs_sb_info *sbi,
3249 			struct writeback_control *wbc,
3250 			bool do_balance, enum iostat_type io_type);
3251 int f2fs_build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount);
3252 bool f2fs_alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid);
3253 void f2fs_alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid);
3254 void f2fs_alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid);
3255 int f2fs_try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink);
3256 int f2fs_recover_inline_xattr(struct inode *inode, struct page *page);
3257 int f2fs_recover_xattr_data(struct inode *inode, struct page *page);
3258 int f2fs_recover_inode_page(struct f2fs_sb_info *sbi, struct page *page);
3259 int f2fs_restore_node_summary(struct f2fs_sb_info *sbi,
3260 			unsigned int segno, struct f2fs_summary_block *sum);
3261 int f2fs_flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc);
3262 int f2fs_build_node_manager(struct f2fs_sb_info *sbi);
3263 void f2fs_destroy_node_manager(struct f2fs_sb_info *sbi);
3264 int __init f2fs_create_node_manager_caches(void);
3265 void f2fs_destroy_node_manager_caches(void);
3266 
3267 /*
3268  * segment.c
3269  */
3270 bool f2fs_need_SSR(struct f2fs_sb_info *sbi);
3271 void f2fs_register_inmem_page(struct inode *inode, struct page *page);
3272 void f2fs_drop_inmem_pages_all(struct f2fs_sb_info *sbi, bool gc_failure);
3273 void f2fs_drop_inmem_pages(struct inode *inode);
3274 void f2fs_drop_inmem_page(struct inode *inode, struct page *page);
3275 int f2fs_commit_inmem_pages(struct inode *inode);
3276 void f2fs_balance_fs(struct f2fs_sb_info *sbi, bool need);
3277 void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi, bool from_bg);
3278 int f2fs_issue_flush(struct f2fs_sb_info *sbi, nid_t ino);
3279 int f2fs_create_flush_cmd_control(struct f2fs_sb_info *sbi);
3280 int f2fs_flush_device_cache(struct f2fs_sb_info *sbi);
3281 void f2fs_destroy_flush_cmd_control(struct f2fs_sb_info *sbi, bool free);
3282 void f2fs_invalidate_blocks(struct f2fs_sb_info *sbi, block_t addr);
3283 bool f2fs_is_checkpointed_data(struct f2fs_sb_info *sbi, block_t blkaddr);
3284 void f2fs_drop_discard_cmd(struct f2fs_sb_info *sbi);
3285 void f2fs_stop_discard_thread(struct f2fs_sb_info *sbi);
3286 bool f2fs_issue_discard_timeout(struct f2fs_sb_info *sbi);
3287 void f2fs_clear_prefree_segments(struct f2fs_sb_info *sbi,
3288 					struct cp_control *cpc);
3289 void f2fs_dirty_to_prefree(struct f2fs_sb_info *sbi);
3290 block_t f2fs_get_unusable_blocks(struct f2fs_sb_info *sbi);
3291 int f2fs_disable_cp_again(struct f2fs_sb_info *sbi, block_t unusable);
3292 void f2fs_release_discard_addrs(struct f2fs_sb_info *sbi);
3293 int f2fs_npages_for_summary_flush(struct f2fs_sb_info *sbi, bool for_ra);
3294 void f2fs_init_inmem_curseg(struct f2fs_sb_info *sbi);
3295 void f2fs_save_inmem_curseg(struct f2fs_sb_info *sbi);
3296 void f2fs_restore_inmem_curseg(struct f2fs_sb_info *sbi);
3297 void f2fs_get_new_segment(struct f2fs_sb_info *sbi,
3298 			unsigned int *newseg, bool new_sec, int dir);
3299 void f2fs_allocate_segment_for_resize(struct f2fs_sb_info *sbi, int type,
3300 					unsigned int start, unsigned int end);
3301 void f2fs_allocate_new_segment(struct f2fs_sb_info *sbi, int type);
3302 void f2fs_allocate_new_segments(struct f2fs_sb_info *sbi);
3303 int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range);
3304 bool f2fs_exist_trim_candidates(struct f2fs_sb_info *sbi,
3305 					struct cp_control *cpc);
3306 struct page *f2fs_get_sum_page(struct f2fs_sb_info *sbi, unsigned int segno);
3307 void f2fs_update_meta_page(struct f2fs_sb_info *sbi, void *src,
3308 					block_t blk_addr);
3309 void f2fs_do_write_meta_page(struct f2fs_sb_info *sbi, struct page *page,
3310 						enum iostat_type io_type);
3311 void f2fs_do_write_node_page(unsigned int nid, struct f2fs_io_info *fio);
3312 void f2fs_outplace_write_data(struct dnode_of_data *dn,
3313 			struct f2fs_io_info *fio);
3314 int f2fs_inplace_write_data(struct f2fs_io_info *fio);
3315 void f2fs_do_replace_block(struct f2fs_sb_info *sbi, struct f2fs_summary *sum,
3316 			block_t old_blkaddr, block_t new_blkaddr,
3317 			bool recover_curseg, bool recover_newaddr,
3318 			bool from_gc);
3319 void f2fs_replace_block(struct f2fs_sb_info *sbi, struct dnode_of_data *dn,
3320 			block_t old_addr, block_t new_addr,
3321 			unsigned char version, bool recover_curseg,
3322 			bool recover_newaddr);
3323 void f2fs_allocate_data_block(struct f2fs_sb_info *sbi, struct page *page,
3324 			block_t old_blkaddr, block_t *new_blkaddr,
3325 			struct f2fs_summary *sum, int type,
3326 			struct f2fs_io_info *fio);
3327 void f2fs_wait_on_page_writeback(struct page *page,
3328 			enum page_type type, bool ordered, bool locked);
3329 void f2fs_wait_on_block_writeback(struct inode *inode, block_t blkaddr);
3330 void f2fs_wait_on_block_writeback_range(struct inode *inode, block_t blkaddr,
3331 								block_t len);
3332 void f2fs_write_data_summaries(struct f2fs_sb_info *sbi, block_t start_blk);
3333 void f2fs_write_node_summaries(struct f2fs_sb_info *sbi, block_t start_blk);
3334 int f2fs_lookup_journal_in_cursum(struct f2fs_journal *journal, int type,
3335 			unsigned int val, int alloc);
3336 void f2fs_flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc);
3337 int f2fs_fix_curseg_write_pointer(struct f2fs_sb_info *sbi);
3338 int f2fs_check_write_pointer(struct f2fs_sb_info *sbi);
3339 int f2fs_build_segment_manager(struct f2fs_sb_info *sbi);
3340 void f2fs_destroy_segment_manager(struct f2fs_sb_info *sbi);
3341 int __init f2fs_create_segment_manager_caches(void);
3342 void f2fs_destroy_segment_manager_caches(void);
3343 int f2fs_rw_hint_to_seg_type(enum rw_hint hint);
3344 enum rw_hint f2fs_io_type_to_rw_hint(struct f2fs_sb_info *sbi,
3345 			enum page_type type, enum temp_type temp);
3346 unsigned int f2fs_usable_segs_in_sec(struct f2fs_sb_info *sbi,
3347 			unsigned int segno);
3348 unsigned int f2fs_usable_blks_in_seg(struct f2fs_sb_info *sbi,
3349 			unsigned int segno);
3350 
3351 /*
3352  * checkpoint.c
3353  */
3354 void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io);
3355 struct page *f2fs_grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index);
3356 struct page *f2fs_get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index);
3357 struct page *f2fs_get_meta_page_retry(struct f2fs_sb_info *sbi, pgoff_t index);
3358 struct page *f2fs_get_tmp_page(struct f2fs_sb_info *sbi, pgoff_t index);
3359 bool f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi,
3360 					block_t blkaddr, int type);
3361 int f2fs_ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages,
3362 			int type, bool sync);
3363 void f2fs_ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index);
3364 long f2fs_sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type,
3365 			long nr_to_write, enum iostat_type io_type);
3366 void f2fs_add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type);
3367 void f2fs_remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type);
3368 void f2fs_release_ino_entry(struct f2fs_sb_info *sbi, bool all);
3369 bool f2fs_exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode);
3370 void f2fs_set_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
3371 					unsigned int devidx, int type);
3372 bool f2fs_is_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
3373 					unsigned int devidx, int type);
3374 int f2fs_sync_inode_meta(struct f2fs_sb_info *sbi);
3375 int f2fs_acquire_orphan_inode(struct f2fs_sb_info *sbi);
3376 void f2fs_release_orphan_inode(struct f2fs_sb_info *sbi);
3377 void f2fs_add_orphan_inode(struct inode *inode);
3378 void f2fs_remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino);
3379 int f2fs_recover_orphan_inodes(struct f2fs_sb_info *sbi);
3380 int f2fs_get_valid_checkpoint(struct f2fs_sb_info *sbi);
3381 void f2fs_update_dirty_page(struct inode *inode, struct page *page);
3382 void f2fs_remove_dirty_inode(struct inode *inode);
3383 int f2fs_sync_dirty_inodes(struct f2fs_sb_info *sbi, enum inode_type type);
3384 void f2fs_wait_on_all_pages(struct f2fs_sb_info *sbi, int type);
3385 int f2fs_write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc);
3386 void f2fs_init_ino_entry_info(struct f2fs_sb_info *sbi);
3387 int __init f2fs_create_checkpoint_caches(void);
3388 void f2fs_destroy_checkpoint_caches(void);
3389 
3390 /*
3391  * data.c
3392  */
3393 int __init f2fs_init_bioset(void);
3394 void f2fs_destroy_bioset(void);
3395 struct bio *f2fs_bio_alloc(struct f2fs_sb_info *sbi, int npages, bool noio);
3396 int f2fs_init_bio_entry_cache(void);
3397 void f2fs_destroy_bio_entry_cache(void);
3398 void f2fs_submit_bio(struct f2fs_sb_info *sbi,
3399 				struct bio *bio, enum page_type type);
3400 void f2fs_submit_merged_write(struct f2fs_sb_info *sbi, enum page_type type);
3401 void f2fs_submit_merged_write_cond(struct f2fs_sb_info *sbi,
3402 				struct inode *inode, struct page *page,
3403 				nid_t ino, enum page_type type);
3404 void f2fs_submit_merged_ipu_write(struct f2fs_sb_info *sbi,
3405 					struct bio **bio, struct page *page);
3406 void f2fs_flush_merged_writes(struct f2fs_sb_info *sbi);
3407 int f2fs_submit_page_bio(struct f2fs_io_info *fio);
3408 int f2fs_merge_page_bio(struct f2fs_io_info *fio);
3409 void f2fs_submit_page_write(struct f2fs_io_info *fio);
3410 struct block_device *f2fs_target_device(struct f2fs_sb_info *sbi,
3411 			block_t blk_addr, struct bio *bio);
3412 int f2fs_target_device_index(struct f2fs_sb_info *sbi, block_t blkaddr);
3413 void f2fs_set_data_blkaddr(struct dnode_of_data *dn);
3414 void f2fs_update_data_blkaddr(struct dnode_of_data *dn, block_t blkaddr);
3415 int f2fs_reserve_new_blocks(struct dnode_of_data *dn, blkcnt_t count);
3416 int f2fs_reserve_new_block(struct dnode_of_data *dn);
3417 int f2fs_get_block(struct dnode_of_data *dn, pgoff_t index);
3418 int f2fs_preallocate_blocks(struct kiocb *iocb, struct iov_iter *from);
3419 int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index);
3420 struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index,
3421 			int op_flags, bool for_write);
3422 struct page *f2fs_find_data_page(struct inode *inode, pgoff_t index);
3423 struct page *f2fs_get_lock_data_page(struct inode *inode, pgoff_t index,
3424 			bool for_write);
3425 struct page *f2fs_get_new_data_page(struct inode *inode,
3426 			struct page *ipage, pgoff_t index, bool new_i_size);
3427 int f2fs_do_write_data_page(struct f2fs_io_info *fio);
3428 void f2fs_do_map_lock(struct f2fs_sb_info *sbi, int flag, bool lock);
3429 int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map,
3430 			int create, int flag);
3431 int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
3432 			u64 start, u64 len);
3433 int f2fs_encrypt_one_page(struct f2fs_io_info *fio);
3434 bool f2fs_should_update_inplace(struct inode *inode, struct f2fs_io_info *fio);
3435 bool f2fs_should_update_outplace(struct inode *inode, struct f2fs_io_info *fio);
3436 int f2fs_write_single_data_page(struct page *page, int *submitted,
3437 				struct bio **bio, sector_t *last_block,
3438 				struct writeback_control *wbc,
3439 				enum iostat_type io_type,
3440 				int compr_blocks);
3441 void f2fs_invalidate_page(struct page *page, unsigned int offset,
3442 			unsigned int length);
3443 int f2fs_release_page(struct page *page, gfp_t wait);
3444 #ifdef CONFIG_MIGRATION
3445 int f2fs_migrate_page(struct address_space *mapping, struct page *newpage,
3446 			struct page *page, enum migrate_mode mode);
3447 #endif
3448 bool f2fs_overwrite_io(struct inode *inode, loff_t pos, size_t len);
3449 void f2fs_clear_page_cache_dirty_tag(struct page *page);
3450 int f2fs_init_post_read_processing(void);
3451 void f2fs_destroy_post_read_processing(void);
3452 int f2fs_init_post_read_wq(struct f2fs_sb_info *sbi);
3453 void f2fs_destroy_post_read_wq(struct f2fs_sb_info *sbi);
3454 
3455 /*
3456  * gc.c
3457  */
3458 int f2fs_start_gc_thread(struct f2fs_sb_info *sbi);
3459 void f2fs_stop_gc_thread(struct f2fs_sb_info *sbi);
3460 block_t f2fs_start_bidx_of_node(unsigned int node_ofs, struct inode *inode);
3461 int f2fs_gc(struct f2fs_sb_info *sbi, bool sync, bool background,
3462 			unsigned int segno);
3463 void f2fs_build_gc_manager(struct f2fs_sb_info *sbi);
3464 int f2fs_resize_fs(struct f2fs_sb_info *sbi, __u64 block_count);
3465 int __init f2fs_create_garbage_collection_cache(void);
3466 void f2fs_destroy_garbage_collection_cache(void);
3467 
3468 /*
3469  * recovery.c
3470  */
3471 int f2fs_recover_fsync_data(struct f2fs_sb_info *sbi, bool check_only);
3472 bool f2fs_space_for_roll_forward(struct f2fs_sb_info *sbi);
3473 
3474 /*
3475  * debug.c
3476  */
3477 #ifdef CONFIG_F2FS_STAT_FS
3478 struct f2fs_stat_info {
3479 	struct list_head stat_list;
3480 	struct f2fs_sb_info *sbi;
3481 	int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
3482 	int main_area_segs, main_area_sections, main_area_zones;
3483 	unsigned long long hit_largest, hit_cached, hit_rbtree;
3484 	unsigned long long hit_total, total_ext;
3485 	int ext_tree, zombie_tree, ext_node;
3486 	int ndirty_node, ndirty_dent, ndirty_meta, ndirty_imeta;
3487 	int ndirty_data, ndirty_qdata;
3488 	int inmem_pages;
3489 	unsigned int ndirty_dirs, ndirty_files, nquota_files, ndirty_all;
3490 	int nats, dirty_nats, sits, dirty_sits;
3491 	int free_nids, avail_nids, alloc_nids;
3492 	int total_count, utilization;
3493 	int bg_gc, nr_wb_cp_data, nr_wb_data;
3494 	int nr_rd_data, nr_rd_node, nr_rd_meta;
3495 	int nr_dio_read, nr_dio_write;
3496 	unsigned int io_skip_bggc, other_skip_bggc;
3497 	int nr_flushing, nr_flushed, flush_list_empty;
3498 	int nr_discarding, nr_discarded;
3499 	int nr_discard_cmd;
3500 	unsigned int undiscard_blks;
3501 	int inline_xattr, inline_inode, inline_dir, append, update, orphans;
3502 	int compr_inode;
3503 	unsigned long long compr_blocks;
3504 	int aw_cnt, max_aw_cnt, vw_cnt, max_vw_cnt;
3505 	unsigned int valid_count, valid_node_count, valid_inode_count, discard_blks;
3506 	unsigned int bimodal, avg_vblocks;
3507 	int util_free, util_valid, util_invalid;
3508 	int rsvd_segs, overp_segs;
3509 	int dirty_count, node_pages, meta_pages;
3510 	int prefree_count, call_count, cp_count, bg_cp_count;
3511 	int tot_segs, node_segs, data_segs, free_segs, free_secs;
3512 	int bg_node_segs, bg_data_segs;
3513 	int tot_blks, data_blks, node_blks;
3514 	int bg_data_blks, bg_node_blks;
3515 	unsigned long long skipped_atomic_files[2];
3516 	int curseg[NR_CURSEG_TYPE];
3517 	int cursec[NR_CURSEG_TYPE];
3518 	int curzone[NR_CURSEG_TYPE];
3519 	unsigned int dirty_seg[NR_CURSEG_TYPE];
3520 	unsigned int full_seg[NR_CURSEG_TYPE];
3521 	unsigned int valid_blks[NR_CURSEG_TYPE];
3522 
3523 	unsigned int meta_count[META_MAX];
3524 	unsigned int segment_count[2];
3525 	unsigned int block_count[2];
3526 	unsigned int inplace_count;
3527 	unsigned long long base_mem, cache_mem, page_mem;
3528 };
3529 
3530 static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
3531 {
3532 	return (struct f2fs_stat_info *)sbi->stat_info;
3533 }
3534 
3535 #define stat_inc_cp_count(si)		((si)->cp_count++)
3536 #define stat_inc_bg_cp_count(si)	((si)->bg_cp_count++)
3537 #define stat_inc_call_count(si)		((si)->call_count++)
3538 #define stat_inc_bggc_count(si)		((si)->bg_gc++)
3539 #define stat_io_skip_bggc_count(sbi)	((sbi)->io_skip_bggc++)
3540 #define stat_other_skip_bggc_count(sbi)	((sbi)->other_skip_bggc++)
3541 #define stat_inc_dirty_inode(sbi, type)	((sbi)->ndirty_inode[type]++)
3542 #define stat_dec_dirty_inode(sbi, type)	((sbi)->ndirty_inode[type]--)
3543 #define stat_inc_total_hit(sbi)		(atomic64_inc(&(sbi)->total_hit_ext))
3544 #define stat_inc_rbtree_node_hit(sbi)	(atomic64_inc(&(sbi)->read_hit_rbtree))
3545 #define stat_inc_largest_node_hit(sbi)	(atomic64_inc(&(sbi)->read_hit_largest))
3546 #define stat_inc_cached_node_hit(sbi)	(atomic64_inc(&(sbi)->read_hit_cached))
3547 #define stat_inc_inline_xattr(inode)					\
3548 	do {								\
3549 		if (f2fs_has_inline_xattr(inode))			\
3550 			(atomic_inc(&F2FS_I_SB(inode)->inline_xattr));	\
3551 	} while (0)
3552 #define stat_dec_inline_xattr(inode)					\
3553 	do {								\
3554 		if (f2fs_has_inline_xattr(inode))			\
3555 			(atomic_dec(&F2FS_I_SB(inode)->inline_xattr));	\
3556 	} while (0)
3557 #define stat_inc_inline_inode(inode)					\
3558 	do {								\
3559 		if (f2fs_has_inline_data(inode))			\
3560 			(atomic_inc(&F2FS_I_SB(inode)->inline_inode));	\
3561 	} while (0)
3562 #define stat_dec_inline_inode(inode)					\
3563 	do {								\
3564 		if (f2fs_has_inline_data(inode))			\
3565 			(atomic_dec(&F2FS_I_SB(inode)->inline_inode));	\
3566 	} while (0)
3567 #define stat_inc_inline_dir(inode)					\
3568 	do {								\
3569 		if (f2fs_has_inline_dentry(inode))			\
3570 			(atomic_inc(&F2FS_I_SB(inode)->inline_dir));	\
3571 	} while (0)
3572 #define stat_dec_inline_dir(inode)					\
3573 	do {								\
3574 		if (f2fs_has_inline_dentry(inode))			\
3575 			(atomic_dec(&F2FS_I_SB(inode)->inline_dir));	\
3576 	} while (0)
3577 #define stat_inc_compr_inode(inode)					\
3578 	do {								\
3579 		if (f2fs_compressed_file(inode))			\
3580 			(atomic_inc(&F2FS_I_SB(inode)->compr_inode));	\
3581 	} while (0)
3582 #define stat_dec_compr_inode(inode)					\
3583 	do {								\
3584 		if (f2fs_compressed_file(inode))			\
3585 			(atomic_dec(&F2FS_I_SB(inode)->compr_inode));	\
3586 	} while (0)
3587 #define stat_add_compr_blocks(inode, blocks)				\
3588 		(atomic64_add(blocks, &F2FS_I_SB(inode)->compr_blocks))
3589 #define stat_sub_compr_blocks(inode, blocks)				\
3590 		(atomic64_sub(blocks, &F2FS_I_SB(inode)->compr_blocks))
3591 #define stat_inc_meta_count(sbi, blkaddr)				\
3592 	do {								\
3593 		if (blkaddr < SIT_I(sbi)->sit_base_addr)		\
3594 			atomic_inc(&(sbi)->meta_count[META_CP]);	\
3595 		else if (blkaddr < NM_I(sbi)->nat_blkaddr)		\
3596 			atomic_inc(&(sbi)->meta_count[META_SIT]);	\
3597 		else if (blkaddr < SM_I(sbi)->ssa_blkaddr)		\
3598 			atomic_inc(&(sbi)->meta_count[META_NAT]);	\
3599 		else if (blkaddr < SM_I(sbi)->main_blkaddr)		\
3600 			atomic_inc(&(sbi)->meta_count[META_SSA]);	\
3601 	} while (0)
3602 #define stat_inc_seg_type(sbi, curseg)					\
3603 		((sbi)->segment_count[(curseg)->alloc_type]++)
3604 #define stat_inc_block_count(sbi, curseg)				\
3605 		((sbi)->block_count[(curseg)->alloc_type]++)
3606 #define stat_inc_inplace_blocks(sbi)					\
3607 		(atomic_inc(&(sbi)->inplace_count))
3608 #define stat_update_max_atomic_write(inode)				\
3609 	do {								\
3610 		int cur = F2FS_I_SB(inode)->atomic_files;	\
3611 		int max = atomic_read(&F2FS_I_SB(inode)->max_aw_cnt);	\
3612 		if (cur > max)						\
3613 			atomic_set(&F2FS_I_SB(inode)->max_aw_cnt, cur);	\
3614 	} while (0)
3615 #define stat_inc_volatile_write(inode)					\
3616 		(atomic_inc(&F2FS_I_SB(inode)->vw_cnt))
3617 #define stat_dec_volatile_write(inode)					\
3618 		(atomic_dec(&F2FS_I_SB(inode)->vw_cnt))
3619 #define stat_update_max_volatile_write(inode)				\
3620 	do {								\
3621 		int cur = atomic_read(&F2FS_I_SB(inode)->vw_cnt);	\
3622 		int max = atomic_read(&F2FS_I_SB(inode)->max_vw_cnt);	\
3623 		if (cur > max)						\
3624 			atomic_set(&F2FS_I_SB(inode)->max_vw_cnt, cur);	\
3625 	} while (0)
3626 #define stat_inc_seg_count(sbi, type, gc_type)				\
3627 	do {								\
3628 		struct f2fs_stat_info *si = F2FS_STAT(sbi);		\
3629 		si->tot_segs++;						\
3630 		if ((type) == SUM_TYPE_DATA) {				\
3631 			si->data_segs++;				\
3632 			si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0;	\
3633 		} else {						\
3634 			si->node_segs++;				\
3635 			si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0;	\
3636 		}							\
3637 	} while (0)
3638 
3639 #define stat_inc_tot_blk_count(si, blks)				\
3640 	((si)->tot_blks += (blks))
3641 
3642 #define stat_inc_data_blk_count(sbi, blks, gc_type)			\
3643 	do {								\
3644 		struct f2fs_stat_info *si = F2FS_STAT(sbi);		\
3645 		stat_inc_tot_blk_count(si, blks);			\
3646 		si->data_blks += (blks);				\
3647 		si->bg_data_blks += ((gc_type) == BG_GC) ? (blks) : 0;	\
3648 	} while (0)
3649 
3650 #define stat_inc_node_blk_count(sbi, blks, gc_type)			\
3651 	do {								\
3652 		struct f2fs_stat_info *si = F2FS_STAT(sbi);		\
3653 		stat_inc_tot_blk_count(si, blks);			\
3654 		si->node_blks += (blks);				\
3655 		si->bg_node_blks += ((gc_type) == BG_GC) ? (blks) : 0;	\
3656 	} while (0)
3657 
3658 int f2fs_build_stats(struct f2fs_sb_info *sbi);
3659 void f2fs_destroy_stats(struct f2fs_sb_info *sbi);
3660 void __init f2fs_create_root_stats(void);
3661 void f2fs_destroy_root_stats(void);
3662 void f2fs_update_sit_info(struct f2fs_sb_info *sbi);
3663 #else
3664 #define stat_inc_cp_count(si)				do { } while (0)
3665 #define stat_inc_bg_cp_count(si)			do { } while (0)
3666 #define stat_inc_call_count(si)				do { } while (0)
3667 #define stat_inc_bggc_count(si)				do { } while (0)
3668 #define stat_io_skip_bggc_count(sbi)			do { } while (0)
3669 #define stat_other_skip_bggc_count(sbi)			do { } while (0)
3670 #define stat_inc_dirty_inode(sbi, type)			do { } while (0)
3671 #define stat_dec_dirty_inode(sbi, type)			do { } while (0)
3672 #define stat_inc_total_hit(sbi)				do { } while (0)
3673 #define stat_inc_rbtree_node_hit(sbi)			do { } while (0)
3674 #define stat_inc_largest_node_hit(sbi)			do { } while (0)
3675 #define stat_inc_cached_node_hit(sbi)			do { } while (0)
3676 #define stat_inc_inline_xattr(inode)			do { } while (0)
3677 #define stat_dec_inline_xattr(inode)			do { } while (0)
3678 #define stat_inc_inline_inode(inode)			do { } while (0)
3679 #define stat_dec_inline_inode(inode)			do { } while (0)
3680 #define stat_inc_inline_dir(inode)			do { } while (0)
3681 #define stat_dec_inline_dir(inode)			do { } while (0)
3682 #define stat_inc_compr_inode(inode)			do { } while (0)
3683 #define stat_dec_compr_inode(inode)			do { } while (0)
3684 #define stat_add_compr_blocks(inode, blocks)		do { } while (0)
3685 #define stat_sub_compr_blocks(inode, blocks)		do { } while (0)
3686 #define stat_inc_atomic_write(inode)			do { } while (0)
3687 #define stat_dec_atomic_write(inode)			do { } while (0)
3688 #define stat_update_max_atomic_write(inode)		do { } while (0)
3689 #define stat_inc_volatile_write(inode)			do { } while (0)
3690 #define stat_dec_volatile_write(inode)			do { } while (0)
3691 #define stat_update_max_volatile_write(inode)		do { } while (0)
3692 #define stat_inc_meta_count(sbi, blkaddr)		do { } while (0)
3693 #define stat_inc_seg_type(sbi, curseg)			do { } while (0)
3694 #define stat_inc_block_count(sbi, curseg)		do { } while (0)
3695 #define stat_inc_inplace_blocks(sbi)			do { } while (0)
3696 #define stat_inc_seg_count(sbi, type, gc_type)		do { } while (0)
3697 #define stat_inc_tot_blk_count(si, blks)		do { } while (0)
3698 #define stat_inc_data_blk_count(sbi, blks, gc_type)	do { } while (0)
3699 #define stat_inc_node_blk_count(sbi, blks, gc_type)	do { } while (0)
3700 
3701 static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
3702 static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
3703 static inline void __init f2fs_create_root_stats(void) { }
3704 static inline void f2fs_destroy_root_stats(void) { }
3705 static inline void f2fs_update_sit_info(struct f2fs_sb_info *sbi) {}
3706 #endif
3707 
3708 extern const struct file_operations f2fs_dir_operations;
3709 extern const struct file_operations f2fs_file_operations;
3710 extern const struct inode_operations f2fs_file_inode_operations;
3711 extern const struct address_space_operations f2fs_dblock_aops;
3712 extern const struct address_space_operations f2fs_node_aops;
3713 extern const struct address_space_operations f2fs_meta_aops;
3714 extern const struct inode_operations f2fs_dir_inode_operations;
3715 extern const struct inode_operations f2fs_symlink_inode_operations;
3716 extern const struct inode_operations f2fs_encrypted_symlink_inode_operations;
3717 extern const struct inode_operations f2fs_special_inode_operations;
3718 extern struct kmem_cache *f2fs_inode_entry_slab;
3719 
3720 /*
3721  * inline.c
3722  */
3723 bool f2fs_may_inline_data(struct inode *inode);
3724 bool f2fs_may_inline_dentry(struct inode *inode);
3725 void f2fs_do_read_inline_data(struct page *page, struct page *ipage);
3726 void f2fs_truncate_inline_inode(struct inode *inode,
3727 						struct page *ipage, u64 from);
3728 int f2fs_read_inline_data(struct inode *inode, struct page *page);
3729 int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page);
3730 int f2fs_convert_inline_inode(struct inode *inode);
3731 int f2fs_try_convert_inline_dir(struct inode *dir, struct dentry *dentry);
3732 int f2fs_write_inline_data(struct inode *inode, struct page *page);
3733 int f2fs_recover_inline_data(struct inode *inode, struct page *npage);
3734 struct f2fs_dir_entry *f2fs_find_in_inline_dir(struct inode *dir,
3735 					const struct f2fs_filename *fname,
3736 					struct page **res_page);
3737 int f2fs_make_empty_inline_dir(struct inode *inode, struct inode *parent,
3738 			struct page *ipage);
3739 int f2fs_add_inline_entry(struct inode *dir, const struct f2fs_filename *fname,
3740 			struct inode *inode, nid_t ino, umode_t mode);
3741 void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry,
3742 				struct page *page, struct inode *dir,
3743 				struct inode *inode);
3744 bool f2fs_empty_inline_dir(struct inode *dir);
3745 int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx,
3746 			struct fscrypt_str *fstr);
3747 int f2fs_inline_data_fiemap(struct inode *inode,
3748 			struct fiemap_extent_info *fieinfo,
3749 			__u64 start, __u64 len);
3750 
3751 /*
3752  * shrinker.c
3753  */
3754 unsigned long f2fs_shrink_count(struct shrinker *shrink,
3755 			struct shrink_control *sc);
3756 unsigned long f2fs_shrink_scan(struct shrinker *shrink,
3757 			struct shrink_control *sc);
3758 void f2fs_join_shrinker(struct f2fs_sb_info *sbi);
3759 void f2fs_leave_shrinker(struct f2fs_sb_info *sbi);
3760 
3761 /*
3762  * extent_cache.c
3763  */
3764 struct rb_entry *f2fs_lookup_rb_tree(struct rb_root_cached *root,
3765 				struct rb_entry *cached_re, unsigned int ofs);
3766 struct rb_node **f2fs_lookup_rb_tree_ext(struct f2fs_sb_info *sbi,
3767 				struct rb_root_cached *root,
3768 				struct rb_node **parent,
3769 				unsigned long long key, bool *left_most);
3770 struct rb_node **f2fs_lookup_rb_tree_for_insert(struct f2fs_sb_info *sbi,
3771 				struct rb_root_cached *root,
3772 				struct rb_node **parent,
3773 				unsigned int ofs, bool *leftmost);
3774 struct rb_entry *f2fs_lookup_rb_tree_ret(struct rb_root_cached *root,
3775 		struct rb_entry *cached_re, unsigned int ofs,
3776 		struct rb_entry **prev_entry, struct rb_entry **next_entry,
3777 		struct rb_node ***insert_p, struct rb_node **insert_parent,
3778 		bool force, bool *leftmost);
3779 bool f2fs_check_rb_tree_consistence(struct f2fs_sb_info *sbi,
3780 				struct rb_root_cached *root, bool check_key);
3781 unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *sbi, int nr_shrink);
3782 void f2fs_init_extent_tree(struct inode *inode, struct page *ipage);
3783 void f2fs_drop_extent_tree(struct inode *inode);
3784 unsigned int f2fs_destroy_extent_node(struct inode *inode);
3785 void f2fs_destroy_extent_tree(struct inode *inode);
3786 bool f2fs_lookup_extent_cache(struct inode *inode, pgoff_t pgofs,
3787 			struct extent_info *ei);
3788 void f2fs_update_extent_cache(struct dnode_of_data *dn);
3789 void f2fs_update_extent_cache_range(struct dnode_of_data *dn,
3790 			pgoff_t fofs, block_t blkaddr, unsigned int len);
3791 void f2fs_init_extent_cache_info(struct f2fs_sb_info *sbi);
3792 int __init f2fs_create_extent_cache(void);
3793 void f2fs_destroy_extent_cache(void);
3794 
3795 /*
3796  * sysfs.c
3797  */
3798 int __init f2fs_init_sysfs(void);
3799 void f2fs_exit_sysfs(void);
3800 int f2fs_register_sysfs(struct f2fs_sb_info *sbi);
3801 void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi);
3802 
3803 /* verity.c */
3804 extern const struct fsverity_operations f2fs_verityops;
3805 
3806 /*
3807  * crypto support
3808  */
3809 static inline bool f2fs_encrypted_file(struct inode *inode)
3810 {
3811 	return IS_ENCRYPTED(inode) && S_ISREG(inode->i_mode);
3812 }
3813 
3814 static inline void f2fs_set_encrypted_inode(struct inode *inode)
3815 {
3816 #ifdef CONFIG_FS_ENCRYPTION
3817 	file_set_encrypt(inode);
3818 	f2fs_set_inode_flags(inode);
3819 #endif
3820 }
3821 
3822 /*
3823  * Returns true if the reads of the inode's data need to undergo some
3824  * postprocessing step, like decryption or authenticity verification.
3825  */
3826 static inline bool f2fs_post_read_required(struct inode *inode)
3827 {
3828 	return f2fs_encrypted_file(inode) || fsverity_active(inode) ||
3829 		f2fs_compressed_file(inode);
3830 }
3831 
3832 /*
3833  * compress.c
3834  */
3835 #ifdef CONFIG_F2FS_FS_COMPRESSION
3836 bool f2fs_is_compressed_page(struct page *page);
3837 struct page *f2fs_compress_control_page(struct page *page);
3838 int f2fs_prepare_compress_overwrite(struct inode *inode,
3839 			struct page **pagep, pgoff_t index, void **fsdata);
3840 bool f2fs_compress_write_end(struct inode *inode, void *fsdata,
3841 					pgoff_t index, unsigned copied);
3842 int f2fs_truncate_partial_cluster(struct inode *inode, u64 from, bool lock);
3843 void f2fs_compress_write_end_io(struct bio *bio, struct page *page);
3844 bool f2fs_is_compress_backend_ready(struct inode *inode);
3845 int f2fs_init_compress_mempool(void);
3846 void f2fs_destroy_compress_mempool(void);
3847 void f2fs_decompress_pages(struct bio *bio, struct page *page, bool verity);
3848 bool f2fs_cluster_is_empty(struct compress_ctx *cc);
3849 bool f2fs_cluster_can_merge_page(struct compress_ctx *cc, pgoff_t index);
3850 void f2fs_compress_ctx_add_page(struct compress_ctx *cc, struct page *page);
3851 int f2fs_write_multi_pages(struct compress_ctx *cc,
3852 						int *submitted,
3853 						struct writeback_control *wbc,
3854 						enum iostat_type io_type);
3855 int f2fs_is_compressed_cluster(struct inode *inode, pgoff_t index);
3856 int f2fs_read_multi_pages(struct compress_ctx *cc, struct bio **bio_ret,
3857 				unsigned nr_pages, sector_t *last_block_in_bio,
3858 				bool is_readahead, bool for_write);
3859 struct decompress_io_ctx *f2fs_alloc_dic(struct compress_ctx *cc);
3860 void f2fs_free_dic(struct decompress_io_ctx *dic);
3861 void f2fs_decompress_end_io(struct page **rpages,
3862 			unsigned int cluster_size, bool err, bool verity);
3863 int f2fs_init_compress_ctx(struct compress_ctx *cc);
3864 void f2fs_destroy_compress_ctx(struct compress_ctx *cc);
3865 void f2fs_init_compress_info(struct f2fs_sb_info *sbi);
3866 int f2fs_init_page_array_cache(struct f2fs_sb_info *sbi);
3867 void f2fs_destroy_page_array_cache(struct f2fs_sb_info *sbi);
3868 int __init f2fs_init_compress_cache(void);
3869 void f2fs_destroy_compress_cache(void);
3870 #else
3871 static inline bool f2fs_is_compressed_page(struct page *page) { return false; }
3872 static inline bool f2fs_is_compress_backend_ready(struct inode *inode)
3873 {
3874 	if (!f2fs_compressed_file(inode))
3875 		return true;
3876 	/* not support compression */
3877 	return false;
3878 }
3879 static inline struct page *f2fs_compress_control_page(struct page *page)
3880 {
3881 	WARN_ON_ONCE(1);
3882 	return ERR_PTR(-EINVAL);
3883 }
3884 static inline int f2fs_init_compress_mempool(void) { return 0; }
3885 static inline void f2fs_destroy_compress_mempool(void) { }
3886 static inline int f2fs_init_page_array_cache(struct f2fs_sb_info *sbi) { return 0; }
3887 static inline void f2fs_destroy_page_array_cache(struct f2fs_sb_info *sbi) { }
3888 static inline int __init f2fs_init_compress_cache(void) { return 0; }
3889 static inline void f2fs_destroy_compress_cache(void) { }
3890 #endif
3891 
3892 static inline void set_compress_context(struct inode *inode)
3893 {
3894 	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3895 
3896 	F2FS_I(inode)->i_compress_algorithm =
3897 			F2FS_OPTION(sbi).compress_algorithm;
3898 	F2FS_I(inode)->i_log_cluster_size =
3899 			F2FS_OPTION(sbi).compress_log_size;
3900 	F2FS_I(inode)->i_compress_flag =
3901 			F2FS_OPTION(sbi).compress_chksum ?
3902 				1 << COMPRESS_CHKSUM : 0;
3903 	F2FS_I(inode)->i_cluster_size =
3904 			1 << F2FS_I(inode)->i_log_cluster_size;
3905 	F2FS_I(inode)->i_flags |= F2FS_COMPR_FL;
3906 	set_inode_flag(inode, FI_COMPRESSED_FILE);
3907 	stat_inc_compr_inode(inode);
3908 	f2fs_mark_inode_dirty_sync(inode, true);
3909 }
3910 
3911 static inline bool f2fs_disable_compressed_file(struct inode *inode)
3912 {
3913 	struct f2fs_inode_info *fi = F2FS_I(inode);
3914 
3915 	if (!f2fs_compressed_file(inode))
3916 		return true;
3917 	if (S_ISREG(inode->i_mode) &&
3918 		(get_dirty_pages(inode) || atomic_read(&fi->i_compr_blocks)))
3919 		return false;
3920 
3921 	fi->i_flags &= ~F2FS_COMPR_FL;
3922 	stat_dec_compr_inode(inode);
3923 	clear_inode_flag(inode, FI_COMPRESSED_FILE);
3924 	f2fs_mark_inode_dirty_sync(inode, true);
3925 	return true;
3926 }
3927 
3928 #define F2FS_FEATURE_FUNCS(name, flagname) \
3929 static inline int f2fs_sb_has_##name(struct f2fs_sb_info *sbi) \
3930 { \
3931 	return F2FS_HAS_FEATURE(sbi, F2FS_FEATURE_##flagname); \
3932 }
3933 
3934 F2FS_FEATURE_FUNCS(encrypt, ENCRYPT);
3935 F2FS_FEATURE_FUNCS(blkzoned, BLKZONED);
3936 F2FS_FEATURE_FUNCS(extra_attr, EXTRA_ATTR);
3937 F2FS_FEATURE_FUNCS(project_quota, PRJQUOTA);
3938 F2FS_FEATURE_FUNCS(inode_chksum, INODE_CHKSUM);
3939 F2FS_FEATURE_FUNCS(flexible_inline_xattr, FLEXIBLE_INLINE_XATTR);
3940 F2FS_FEATURE_FUNCS(quota_ino, QUOTA_INO);
3941 F2FS_FEATURE_FUNCS(inode_crtime, INODE_CRTIME);
3942 F2FS_FEATURE_FUNCS(lost_found, LOST_FOUND);
3943 F2FS_FEATURE_FUNCS(verity, VERITY);
3944 F2FS_FEATURE_FUNCS(sb_chksum, SB_CHKSUM);
3945 F2FS_FEATURE_FUNCS(casefold, CASEFOLD);
3946 F2FS_FEATURE_FUNCS(compression, COMPRESSION);
3947 
3948 #ifdef CONFIG_BLK_DEV_ZONED
3949 static inline bool f2fs_blkz_is_seq(struct f2fs_sb_info *sbi, int devi,
3950 				    block_t blkaddr)
3951 {
3952 	unsigned int zno = blkaddr >> sbi->log_blocks_per_blkz;
3953 
3954 	return test_bit(zno, FDEV(devi).blkz_seq);
3955 }
3956 #endif
3957 
3958 static inline bool f2fs_hw_should_discard(struct f2fs_sb_info *sbi)
3959 {
3960 	return f2fs_sb_has_blkzoned(sbi);
3961 }
3962 
3963 static inline bool f2fs_bdev_support_discard(struct block_device *bdev)
3964 {
3965 	return blk_queue_discard(bdev_get_queue(bdev)) ||
3966 	       bdev_is_zoned(bdev);
3967 }
3968 
3969 static inline bool f2fs_hw_support_discard(struct f2fs_sb_info *sbi)
3970 {
3971 	int i;
3972 
3973 	if (!f2fs_is_multi_device(sbi))
3974 		return f2fs_bdev_support_discard(sbi->sb->s_bdev);
3975 
3976 	for (i = 0; i < sbi->s_ndevs; i++)
3977 		if (f2fs_bdev_support_discard(FDEV(i).bdev))
3978 			return true;
3979 	return false;
3980 }
3981 
3982 static inline bool f2fs_realtime_discard_enable(struct f2fs_sb_info *sbi)
3983 {
3984 	return (test_opt(sbi, DISCARD) && f2fs_hw_support_discard(sbi)) ||
3985 					f2fs_hw_should_discard(sbi);
3986 }
3987 
3988 static inline bool f2fs_hw_is_readonly(struct f2fs_sb_info *sbi)
3989 {
3990 	int i;
3991 
3992 	if (!f2fs_is_multi_device(sbi))
3993 		return bdev_read_only(sbi->sb->s_bdev);
3994 
3995 	for (i = 0; i < sbi->s_ndevs; i++)
3996 		if (bdev_read_only(FDEV(i).bdev))
3997 			return true;
3998 	return false;
3999 }
4000 
4001 static inline bool f2fs_lfs_mode(struct f2fs_sb_info *sbi)
4002 {
4003 	return F2FS_OPTION(sbi).fs_mode == FS_MODE_LFS;
4004 }
4005 
4006 static inline bool f2fs_may_compress(struct inode *inode)
4007 {
4008 	if (IS_SWAPFILE(inode) || f2fs_is_pinned_file(inode) ||
4009 				f2fs_is_atomic_file(inode) ||
4010 				f2fs_is_volatile_file(inode))
4011 		return false;
4012 	return S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode);
4013 }
4014 
4015 static inline void f2fs_i_compr_blocks_update(struct inode *inode,
4016 						u64 blocks, bool add)
4017 {
4018 	int diff = F2FS_I(inode)->i_cluster_size - blocks;
4019 	struct f2fs_inode_info *fi = F2FS_I(inode);
4020 
4021 	/* don't update i_compr_blocks if saved blocks were released */
4022 	if (!add && !atomic_read(&fi->i_compr_blocks))
4023 		return;
4024 
4025 	if (add) {
4026 		atomic_add(diff, &fi->i_compr_blocks);
4027 		stat_add_compr_blocks(inode, diff);
4028 	} else {
4029 		atomic_sub(diff, &fi->i_compr_blocks);
4030 		stat_sub_compr_blocks(inode, diff);
4031 	}
4032 	f2fs_mark_inode_dirty_sync(inode, true);
4033 }
4034 
4035 static inline int block_unaligned_IO(struct inode *inode,
4036 				struct kiocb *iocb, struct iov_iter *iter)
4037 {
4038 	unsigned int i_blkbits = READ_ONCE(inode->i_blkbits);
4039 	unsigned int blocksize_mask = (1 << i_blkbits) - 1;
4040 	loff_t offset = iocb->ki_pos;
4041 	unsigned long align = offset | iov_iter_alignment(iter);
4042 
4043 	return align & blocksize_mask;
4044 }
4045 
4046 static inline int allow_outplace_dio(struct inode *inode,
4047 				struct kiocb *iocb, struct iov_iter *iter)
4048 {
4049 	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
4050 	int rw = iov_iter_rw(iter);
4051 
4052 	return (f2fs_lfs_mode(sbi) && (rw == WRITE) &&
4053 				!block_unaligned_IO(inode, iocb, iter));
4054 }
4055 
4056 static inline bool f2fs_force_buffered_io(struct inode *inode,
4057 				struct kiocb *iocb, struct iov_iter *iter)
4058 {
4059 	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
4060 	int rw = iov_iter_rw(iter);
4061 
4062 	if (f2fs_post_read_required(inode))
4063 		return true;
4064 	if (f2fs_is_multi_device(sbi))
4065 		return true;
4066 	/*
4067 	 * for blkzoned device, fallback direct IO to buffered IO, so
4068 	 * all IOs can be serialized by log-structured write.
4069 	 */
4070 	if (f2fs_sb_has_blkzoned(sbi))
4071 		return true;
4072 	if (f2fs_lfs_mode(sbi) && (rw == WRITE)) {
4073 		if (block_unaligned_IO(inode, iocb, iter))
4074 			return true;
4075 		if (F2FS_IO_ALIGNED(sbi))
4076 			return true;
4077 	}
4078 	if (is_sbi_flag_set(F2FS_I_SB(inode), SBI_CP_DISABLED) &&
4079 					!IS_SWAPFILE(inode))
4080 		return true;
4081 
4082 	return false;
4083 }
4084 
4085 #ifdef CONFIG_F2FS_FAULT_INJECTION
4086 extern void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate,
4087 							unsigned int type);
4088 #else
4089 #define f2fs_build_fault_attr(sbi, rate, type)		do { } while (0)
4090 #endif
4091 
4092 static inline bool is_journalled_quota(struct f2fs_sb_info *sbi)
4093 {
4094 #ifdef CONFIG_QUOTA
4095 	if (f2fs_sb_has_quota_ino(sbi))
4096 		return true;
4097 	if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] ||
4098 		F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] ||
4099 		F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
4100 		return true;
4101 #endif
4102 	return false;
4103 }
4104 
4105 #define EFSBADCRC	EBADMSG		/* Bad CRC detected */
4106 #define EFSCORRUPTED	EUCLEAN		/* Filesystem is corrupted */
4107 
4108 #endif /* _LINUX_F2FS_H */
4109