]> git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/blame - fs/f2fs/f2fs.h
f2fs: record node block allocation in dnode_of_data
[mirror_ubuntu-jammy-kernel.git] / fs / f2fs / f2fs.h
CommitLineData
0a8165d7 1/*
39a53e0c
JK
2 * fs/f2fs/f2fs.h
3 *
4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11#ifndef _LINUX_F2FS_H
12#define _LINUX_F2FS_H
13
14#include <linux/types.h>
15#include <linux/page-flags.h>
16#include <linux/buffer_head.h>
39a53e0c
JK
17#include <linux/slab.h>
18#include <linux/crc32.h>
19#include <linux/magic.h>
c2d715d1 20#include <linux/kobject.h>
7bd59381 21#include <linux/sched.h>
39307a8e 22#include <linux/vmalloc.h>
740432f8 23#include <linux/bio.h>
39a53e0c 24
5d56b671 25#ifdef CONFIG_F2FS_CHECK_FS
9850cf4a 26#define f2fs_bug_on(sbi, condition) BUG_ON(condition)
0daaad97 27#define f2fs_down_write(x, y) down_write_nest_lock(x, y)
5d56b671 28#else
9850cf4a
JK
29#define f2fs_bug_on(sbi, condition) \
30 do { \
31 if (unlikely(condition)) { \
32 WARN_ON(1); \
caf0047e 33 set_sbi_flag(sbi, SBI_NEED_FSCK); \
9850cf4a
JK
34 } \
35 } while (0)
0daaad97 36#define f2fs_down_write(x, y) down_write(x)
5d56b671
JK
37#endif
38
39a53e0c
JK
39/*
40 * For mount options
41 */
42#define F2FS_MOUNT_BG_GC 0x00000001
43#define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
44#define F2FS_MOUNT_DISCARD 0x00000004
45#define F2FS_MOUNT_NOHEAP 0x00000008
46#define F2FS_MOUNT_XATTR_USER 0x00000010
47#define F2FS_MOUNT_POSIX_ACL 0x00000020
48#define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
444c580f 49#define F2FS_MOUNT_INLINE_XATTR 0x00000080
1001b347 50#define F2FS_MOUNT_INLINE_DATA 0x00000100
34d67deb
CY
51#define F2FS_MOUNT_INLINE_DENTRY 0x00000200
52#define F2FS_MOUNT_FLUSH_MERGE 0x00000400
53#define F2FS_MOUNT_NOBARRIER 0x00000800
d5053a34 54#define F2FS_MOUNT_FASTBOOT 0x00001000
89672159 55#define F2FS_MOUNT_EXTENT_CACHE 0x00002000
6aefd93b 56#define F2FS_MOUNT_FORCE_FG_GC 0x00004000
343f40f0 57#define F2FS_MOUNT_DATA_FLUSH 0x00008000
39a53e0c
JK
58
59#define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
60#define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
61#define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
62
63#define ver_after(a, b) (typecheck(unsigned long long, a) && \
64 typecheck(unsigned long long, b) && \
65 ((long long)((a) - (b)) > 0))
66
a9841c4d
JK
67typedef u32 block_t; /*
68 * should not change u32, since it is the on-disk block
69 * address format, __le32.
70 */
39a53e0c
JK
71typedef u32 nid_t;
72
73struct f2fs_mount_info {
74 unsigned int opt;
75};
76
cde4de12
JK
77#define F2FS_FEATURE_ENCRYPT 0x0001
78
76f105a2
JK
79#define F2FS_HAS_FEATURE(sb, mask) \
80 ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
81#define F2FS_SET_FEATURE(sb, mask) \
82 F2FS_SB(sb)->raw_super->feature |= cpu_to_le32(mask)
83#define F2FS_CLEAR_FEATURE(sb, mask) \
84 F2FS_SB(sb)->raw_super->feature &= ~cpu_to_le32(mask)
85
7e586fa0
JK
86#define CRCPOLY_LE 0xedb88320
87
88static inline __u32 f2fs_crc32(void *buf, size_t len)
39a53e0c 89{
7e586fa0
JK
90 unsigned char *p = (unsigned char *)buf;
91 __u32 crc = F2FS_SUPER_MAGIC;
92 int i;
93
94 while (len--) {
95 crc ^= *p++;
96 for (i = 0; i < 8; i++)
97 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
98 }
99 return crc;
39a53e0c
JK
100}
101
7e586fa0 102static inline bool f2fs_crc_valid(__u32 blk_crc, void *buf, size_t buf_size)
39a53e0c 103{
7e586fa0 104 return f2fs_crc32(buf, buf_size) == blk_crc;
39a53e0c
JK
105}
106
107/*
108 * For checkpoint manager
109 */
110enum {
111 NAT_BITMAP,
112 SIT_BITMAP
113};
114
75ab4cb8
JK
115enum {
116 CP_UMOUNT,
119ee914 117 CP_FASTBOOT,
75ab4cb8 118 CP_SYNC,
10027551 119 CP_RECOVERY,
4b2fecc8 120 CP_DISCARD,
75ab4cb8
JK
121};
122
bba681cb
JK
123#define DEF_BATCHED_TRIM_SECTIONS 32
124#define BATCHED_TRIM_SEGMENTS(sbi) \
125 (SM_I(sbi)->trim_sections * (sbi)->segs_per_sec)
a66cdd98
JK
126#define BATCHED_TRIM_BLOCKS(sbi) \
127 (BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg)
60b99b48 128#define DEF_CP_INTERVAL 60 /* 60 secs */
bba681cb 129
75ab4cb8
JK
130struct cp_control {
131 int reason;
4b2fecc8
JK
132 __u64 trim_start;
133 __u64 trim_end;
134 __u64 trim_minlen;
135 __u64 trimmed;
75ab4cb8
JK
136};
137
662befda 138/*
81c1a0f1 139 * For CP/NAT/SIT/SSA readahead
662befda
CY
140 */
141enum {
142 META_CP,
143 META_NAT,
81c1a0f1 144 META_SIT,
4c521f49
JK
145 META_SSA,
146 META_POR,
662befda
CY
147};
148
6451e041
JK
149/* for the list of ino */
150enum {
151 ORPHAN_INO, /* for orphan ino list */
fff04f90
JK
152 APPEND_INO, /* for append ino list */
153 UPDATE_INO, /* for update ino list */
6451e041
JK
154 MAX_INO_ENTRY, /* max. list */
155};
156
157struct ino_entry {
39a53e0c
JK
158 struct list_head list; /* list head */
159 nid_t ino; /* inode number */
160};
161
2710fd7e 162/* for the list of inodes to be GCed */
06292073 163struct inode_entry {
39a53e0c
JK
164 struct list_head list; /* list head */
165 struct inode *inode; /* vfs inode pointer */
166};
167
7fd9e544
JK
168/* for the list of blockaddresses to be discarded */
169struct discard_entry {
170 struct list_head list; /* list head */
171 block_t blkaddr; /* block address to be discarded */
172 int len; /* # of consecutive blocks of the discard */
173};
174
39a53e0c
JK
175/* for the list of fsync inodes, used only during recovery */
176struct fsync_inode_entry {
177 struct list_head list; /* list head */
178 struct inode *inode; /* vfs inode pointer */
c52e1b10
JK
179 block_t blkaddr; /* block address locating the last fsync */
180 block_t last_dentry; /* block address locating the last dentry */
181 block_t last_inode; /* block address locating the last inode */
39a53e0c
JK
182};
183
184#define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
185#define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
186
187#define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
188#define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
189#define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
190#define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
191
309cc2b6
JK
192#define MAX_NAT_JENTRIES(sum) (NAT_JOURNAL_ENTRIES - nats_in_cursum(sum))
193#define MAX_SIT_JENTRIES(sum) (SIT_JOURNAL_ENTRIES - sits_in_cursum(sum))
194
39a53e0c
JK
195static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i)
196{
197 int before = nats_in_cursum(rs);
198 rs->n_nats = cpu_to_le16(before + i);
199 return before;
200}
201
202static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i)
203{
204 int before = sits_in_cursum(rs);
205 rs->n_sits = cpu_to_le16(before + i);
206 return before;
207}
208
184a5cd2
CY
209static inline bool __has_cursum_space(struct f2fs_summary_block *sum, int size,
210 int type)
211{
212 if (type == NAT_JOURNAL)
309cc2b6
JK
213 return size <= MAX_NAT_JENTRIES(sum);
214 return size <= MAX_SIT_JENTRIES(sum);
184a5cd2
CY
215}
216
e9750824
NJ
217/*
218 * ioctl commands
219 */
88b88a66
JK
220#define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
221#define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
d49f3e89 222#define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
88b88a66
JK
223
224#define F2FS_IOCTL_MAGIC 0xf5
225#define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
226#define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
02a1335f 227#define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
1e84371f
JK
228#define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
229#define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
c1c1b583 230#define F2FS_IOC_GARBAGE_COLLECT _IO(F2FS_IOCTL_MAGIC, 6)
456b88e4 231#define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7)
d323d005 232#define F2FS_IOC_DEFRAGMENT _IO(F2FS_IOCTL_MAGIC, 8)
e9750824 233
f424f664
JK
234#define F2FS_IOC_SET_ENCRYPTION_POLICY \
235 _IOR('f', 19, struct f2fs_encryption_policy)
236#define F2FS_IOC_GET_ENCRYPTION_PWSALT \
237 _IOW('f', 20, __u8[16])
238#define F2FS_IOC_GET_ENCRYPTION_POLICY \
239 _IOW('f', 21, struct f2fs_encryption_policy)
240
1abff93d
JK
241/*
242 * should be same as XFS_IOC_GOINGDOWN.
243 * Flags for going down operation used by FS_IOC_GOINGDOWN
244 */
245#define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
246#define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
247#define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
248#define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
c912a829 249#define F2FS_GOING_DOWN_METAFLUSH 0x3 /* going down with meta flush */
1abff93d 250
e9750824
NJ
251#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
252/*
253 * ioctl commands in 32 bit emulation
254 */
04ef4b62
CY
255#define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
256#define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
257#define F2FS_IOC32_GETVERSION FS_IOC32_GETVERSION
e9750824
NJ
258#endif
259
d323d005
CY
260struct f2fs_defragment {
261 u64 start;
262 u64 len;
263};
264
39a53e0c
JK
265/*
266 * For INODE and NODE manager
267 */
7b3cd7d6 268/* for directory operations */
6b3bd08f
JK
269struct f2fs_str {
270 unsigned char *name;
271 u32 len;
272};
273
274struct f2fs_filename {
275 const struct qstr *usr_fname;
276 struct f2fs_str disk_name;
277 f2fs_hash_t hash;
278#ifdef CONFIG_F2FS_FS_ENCRYPTION
279 struct f2fs_str crypto_buf;
280#endif
281};
282
283#define FSTR_INIT(n, l) { .name = n, .len = l }
284#define FSTR_TO_QSTR(f) QSTR_INIT((f)->name, (f)->len)
285#define fname_name(p) ((p)->disk_name.name)
286#define fname_len(p) ((p)->disk_name.len)
287
7b3cd7d6 288struct f2fs_dentry_ptr {
d8c6822a 289 struct inode *inode;
7b3cd7d6
JK
290 const void *bitmap;
291 struct f2fs_dir_entry *dentry;
292 __u8 (*filename)[F2FS_SLOT_LEN];
293 int max;
294};
295
d8c6822a
JK
296static inline void make_dentry_ptr(struct inode *inode,
297 struct f2fs_dentry_ptr *d, void *src, int type)
7b3cd7d6 298{
d8c6822a
JK
299 d->inode = inode;
300
7b3cd7d6
JK
301 if (type == 1) {
302 struct f2fs_dentry_block *t = (struct f2fs_dentry_block *)src;
303 d->max = NR_DENTRY_IN_BLOCK;
304 d->bitmap = &t->dentry_bitmap;
305 d->dentry = t->dentry;
306 d->filename = t->filename;
307 } else {
308 struct f2fs_inline_dentry *t = (struct f2fs_inline_dentry *)src;
309 d->max = NR_INLINE_DENTRY;
310 d->bitmap = &t->dentry_bitmap;
311 d->dentry = t->dentry;
312 d->filename = t->filename;
313 }
314}
315
dbe6a5ff
JK
316/*
317 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
318 * as its node offset to distinguish from index node blocks.
319 * But some bits are used to mark the node block.
320 */
321#define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
322 >> OFFSET_BIT_SHIFT)
266e97a8
JK
323enum {
324 ALLOC_NODE, /* allocate a new node page if needed */
325 LOOKUP_NODE, /* look up a node without readahead */
326 LOOKUP_NODE_RA, /*
327 * look up a node with readahead called
4f4124d0 328 * by get_data_block.
39a53e0c 329 */
266e97a8
JK
330};
331
a6db67f0 332#define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */
39a53e0c 333
817202d9
CY
334#define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
335
13054c54
CY
336/* vector size for gang look-up from extent cache that consists of radix tree */
337#define EXT_TREE_VEC_SIZE 64
338
39a53e0c 339/* for in-memory extent cache entry */
13054c54
CY
340#define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
341
342/* number of extent info in extent cache we try to shrink */
343#define EXTENT_CACHE_SHRINK_NUMBER 128
c11abd1a 344
39a53e0c 345struct extent_info {
13054c54
CY
346 unsigned int fofs; /* start offset in a file */
347 u32 blk; /* start block address of the extent */
348 unsigned int len; /* length of the extent */
349};
350
351struct extent_node {
352 struct rb_node rb_node; /* rb node located in rb-tree */
353 struct list_head list; /* node in global extent list of sbi */
354 struct extent_info ei; /* extent info */
355};
356
357struct extent_tree {
358 nid_t ino; /* inode number */
359 struct rb_root root; /* root of extent info rb-tree */
62c8af65 360 struct extent_node *cached_en; /* recently accessed extent node */
3e72f721 361 struct extent_info largest; /* largested extent info */
13054c54
CY
362 rwlock_t lock; /* protect extent info rb-tree */
363 atomic_t refcount; /* reference count of rb-tree */
364 unsigned int count; /* # of extent node in rb-tree*/
39a53e0c
JK
365};
366
003a3e1d
JK
367/*
368 * This structure is taken from ext4_map_blocks.
369 *
370 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
371 */
372#define F2FS_MAP_NEW (1 << BH_New)
373#define F2FS_MAP_MAPPED (1 << BH_Mapped)
7f63eb77
JK
374#define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten)
375#define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
376 F2FS_MAP_UNWRITTEN)
003a3e1d
JK
377
378struct f2fs_map_blocks {
379 block_t m_pblk;
380 block_t m_lblk;
381 unsigned int m_len;
382 unsigned int m_flags;
383};
384
e2b4e2bc
CY
385/* for flag in get_data_block */
386#define F2FS_GET_BLOCK_READ 0
387#define F2FS_GET_BLOCK_DIO 1
388#define F2FS_GET_BLOCK_FIEMAP 2
389#define F2FS_GET_BLOCK_BMAP 3
390
39a53e0c
JK
391/*
392 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
393 */
394#define FADVISE_COLD_BIT 0x01
354a3399 395#define FADVISE_LOST_PINO_BIT 0x02
cde4de12 396#define FADVISE_ENCRYPT_BIT 0x04
e7d55452 397#define FADVISE_ENC_NAME_BIT 0x08
39a53e0c 398
b5492af7
JK
399#define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
400#define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
401#define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
402#define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
403#define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
404#define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
cde4de12
JK
405#define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
406#define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
407#define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
e7d55452
JK
408#define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
409#define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
cde4de12
JK
410
411/* Encryption algorithms */
412#define F2FS_ENCRYPTION_MODE_INVALID 0
413#define F2FS_ENCRYPTION_MODE_AES_256_XTS 1
414#define F2FS_ENCRYPTION_MODE_AES_256_GCM 2
415#define F2FS_ENCRYPTION_MODE_AES_256_CBC 3
416#define F2FS_ENCRYPTION_MODE_AES_256_CTS 4
b5492af7 417
f424f664
JK
418#include "f2fs_crypto.h"
419
ab9fa662
JK
420#define DEF_DIR_LEVEL 0
421
39a53e0c
JK
422struct f2fs_inode_info {
423 struct inode vfs_inode; /* serve a vfs inode */
424 unsigned long i_flags; /* keep an inode flags for ioctl */
425 unsigned char i_advise; /* use to give file attribute hints */
38431545 426 unsigned char i_dir_level; /* use for dentry level for large dir */
39a53e0c 427 unsigned int i_current_depth; /* use only in directory structure */
6666e6aa 428 unsigned int i_pino; /* parent inode number */
39a53e0c
JK
429 umode_t i_acl_mode; /* keep file acl mode temporarily */
430
431 /* Use below internally in f2fs*/
432 unsigned long flags; /* use to pass per-file flags */
d928bfbf 433 struct rw_semaphore i_sem; /* protect fi info */
a7ffdbe2 434 atomic_t dirty_pages; /* # of dirty pages */
39a53e0c
JK
435 f2fs_hash_t chash; /* hash value of given file name */
436 unsigned int clevel; /* maximum level of given file name */
437 nid_t i_xattr_nid; /* node id that contains xattrs */
e518ff81 438 unsigned long long xattr_ver; /* cp version of xattr modification */
88b88a66 439
2710fd7e 440 struct list_head dirty_list; /* linked in global dirty list */
88b88a66
JK
441 struct list_head inmem_pages; /* inmemory pages managed by f2fs */
442 struct mutex inmem_lock; /* lock for inmemory pages */
cde4de12 443
3e72f721
JK
444 struct extent_tree *extent_tree; /* cached extent_tree entry */
445
cde4de12
JK
446#ifdef CONFIG_F2FS_FS_ENCRYPTION
447 /* Encryption params */
448 struct f2fs_crypt_info *i_crypt_info;
449#endif
39a53e0c
JK
450};
451
452static inline void get_extent_info(struct extent_info *ext,
453 struct f2fs_extent i_ext)
454{
39a53e0c 455 ext->fofs = le32_to_cpu(i_ext.fofs);
4d0b0bd4 456 ext->blk = le32_to_cpu(i_ext.blk);
39a53e0c 457 ext->len = le32_to_cpu(i_ext.len);
39a53e0c
JK
458}
459
460static inline void set_raw_extent(struct extent_info *ext,
461 struct f2fs_extent *i_ext)
462{
39a53e0c 463 i_ext->fofs = cpu_to_le32(ext->fofs);
4d0b0bd4 464 i_ext->blk = cpu_to_le32(ext->blk);
39a53e0c 465 i_ext->len = cpu_to_le32(ext->len);
39a53e0c
JK
466}
467
429511cd
CY
468static inline void set_extent_info(struct extent_info *ei, unsigned int fofs,
469 u32 blk, unsigned int len)
470{
471 ei->fofs = fofs;
472 ei->blk = blk;
473 ei->len = len;
474}
475
0bdee482
CY
476static inline bool __is_extent_same(struct extent_info *ei1,
477 struct extent_info *ei2)
478{
479 return (ei1->fofs == ei2->fofs && ei1->blk == ei2->blk &&
480 ei1->len == ei2->len);
481}
482
429511cd
CY
483static inline bool __is_extent_mergeable(struct extent_info *back,
484 struct extent_info *front)
485{
486 return (back->fofs + back->len == front->fofs &&
487 back->blk + back->len == front->blk);
488}
489
490static inline bool __is_back_mergeable(struct extent_info *cur,
491 struct extent_info *back)
492{
493 return __is_extent_mergeable(back, cur);
494}
495
496static inline bool __is_front_mergeable(struct extent_info *cur,
497 struct extent_info *front)
498{
499 return __is_extent_mergeable(cur, front);
500}
501
4abd3f5a
CY
502static inline void __try_update_largest_extent(struct extent_tree *et,
503 struct extent_node *en)
504{
505 if (en->ei.len > et->largest.len)
506 et->largest = en->ei;
507}
508
39a53e0c
JK
509struct f2fs_nm_info {
510 block_t nat_blkaddr; /* base disk address of NAT */
511 nid_t max_nid; /* maximum possible node ids */
7ee0eeab 512 nid_t available_nids; /* maximum available node ids */
39a53e0c 513 nid_t next_scan_nid; /* the next nid to be scanned */
cdfc41c1 514 unsigned int ram_thresh; /* control the memory footprint */
ea1a29a0 515 unsigned int ra_nid_pages; /* # of nid pages to be readaheaded */
39a53e0c
JK
516
517 /* NAT cache management */
518 struct radix_tree_root nat_root;/* root of the nat entry cache */
309cc2b6 519 struct radix_tree_root nat_set_root;/* root of the nat set cache */
8b26ef98 520 struct rw_semaphore nat_tree_lock; /* protect nat_tree_lock */
39a53e0c 521 struct list_head nat_entries; /* cached nat entry list (clean) */
309cc2b6 522 unsigned int nat_cnt; /* the # of cached nat entries */
aec71382 523 unsigned int dirty_nat_cnt; /* total num of nat entries in set */
39a53e0c
JK
524
525 /* free node ids management */
8a7ed66a 526 struct radix_tree_root free_nid_root;/* root of the free_nid cache */
39a53e0c
JK
527 struct list_head free_nid_list; /* a list for free nids */
528 spinlock_t free_nid_list_lock; /* protect free nid list */
529 unsigned int fcnt; /* the number of free node id */
530 struct mutex build_lock; /* lock for build free nids */
531
532 /* for checkpoint */
533 char *nat_bitmap; /* NAT bitmap pointer */
534 int bitmap_size; /* bitmap size */
535};
536
537/*
538 * this structure is used as one of function parameters.
539 * all the information are dedicated to a given direct node block determined
540 * by the data offset in a file.
541 */
542struct dnode_of_data {
543 struct inode *inode; /* vfs inode pointer */
544 struct page *inode_page; /* its inode page, NULL is possible */
545 struct page *node_page; /* cached direct node page */
546 nid_t nid; /* node id of the direct node block */
547 unsigned int ofs_in_node; /* data offset in the node page */
548 bool inode_page_locked; /* inode page is locked or not */
93bae099 549 bool node_changed; /* is node block changed */
39a53e0c
JK
550 block_t data_blkaddr; /* block address of the node block */
551};
552
553static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
554 struct page *ipage, struct page *npage, nid_t nid)
555{
d66d1f76 556 memset(dn, 0, sizeof(*dn));
39a53e0c
JK
557 dn->inode = inode;
558 dn->inode_page = ipage;
559 dn->node_page = npage;
560 dn->nid = nid;
39a53e0c
JK
561}
562
563/*
564 * For SIT manager
565 *
566 * By default, there are 6 active log areas across the whole main area.
567 * When considering hot and cold data separation to reduce cleaning overhead,
568 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
569 * respectively.
570 * In the current design, you should not change the numbers intentionally.
571 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
572 * logs individually according to the underlying devices. (default: 6)
573 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
574 * data and 8 for node logs.
575 */
576#define NR_CURSEG_DATA_TYPE (3)
577#define NR_CURSEG_NODE_TYPE (3)
578#define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
579
580enum {
581 CURSEG_HOT_DATA = 0, /* directory entry blocks */
582 CURSEG_WARM_DATA, /* data blocks */
583 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
584 CURSEG_HOT_NODE, /* direct node blocks of directory files */
585 CURSEG_WARM_NODE, /* direct node blocks of normal files */
586 CURSEG_COLD_NODE, /* indirect node blocks */
38aa0889
JK
587 NO_CHECK_TYPE,
588 CURSEG_DIRECT_IO, /* to use for the direct IO path */
39a53e0c
JK
589};
590
6b4afdd7 591struct flush_cmd {
6b4afdd7 592 struct completion wait;
721bd4d5 593 struct llist_node llnode;
6b4afdd7
JK
594 int ret;
595};
596
a688b9d9
GZ
597struct flush_cmd_control {
598 struct task_struct *f2fs_issue_flush; /* flush thread */
599 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
721bd4d5
GZ
600 struct llist_head issue_list; /* list for command issue */
601 struct llist_node *dispatch_list; /* list for command dispatch */
a688b9d9
GZ
602};
603
39a53e0c
JK
604struct f2fs_sm_info {
605 struct sit_info *sit_info; /* whole segment information */
606 struct free_segmap_info *free_info; /* free segment information */
607 struct dirty_seglist_info *dirty_info; /* dirty segment information */
608 struct curseg_info *curseg_array; /* active segment information */
609
39a53e0c
JK
610 block_t seg0_blkaddr; /* block address of 0'th segment */
611 block_t main_blkaddr; /* start block address of main area */
612 block_t ssa_blkaddr; /* start block address of SSA area */
613
614 unsigned int segment_count; /* total # of segments */
615 unsigned int main_segments; /* # of segments in main area */
616 unsigned int reserved_segments; /* # of reserved segments */
617 unsigned int ovp_segments; /* # of overprovision segments */
81eb8d6e
JK
618
619 /* a threshold to reclaim prefree segments */
620 unsigned int rec_prefree_segments;
7fd9e544
JK
621
622 /* for small discard management */
623 struct list_head discard_list; /* 4KB discard list */
624 int nr_discards; /* # of discards in the list */
625 int max_discards; /* max. discards to be issued */
216fbd64 626
bba681cb
JK
627 /* for batched trimming */
628 unsigned int trim_sections; /* # of sections to trim */
629
184a5cd2
CY
630 struct list_head sit_entry_set; /* sit entry set list */
631
216fbd64
JK
632 unsigned int ipu_policy; /* in-place-update policy */
633 unsigned int min_ipu_util; /* in-place-update threshold */
c1ce1b02 634 unsigned int min_fsync_blocks; /* threshold for fsync */
6b4afdd7
JK
635
636 /* for flush command control */
a688b9d9
GZ
637 struct flush_cmd_control *cmd_control_info;
638
39a53e0c
JK
639};
640
39a53e0c
JK
641/*
642 * For superblock
643 */
644/*
645 * COUNT_TYPE for monitoring
646 *
647 * f2fs monitors the number of several block types such as on-writeback,
648 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
649 */
650enum count_type {
651 F2FS_WRITEBACK,
652 F2FS_DIRTY_DENTS,
c227f912 653 F2FS_DIRTY_DATA,
39a53e0c
JK
654 F2FS_DIRTY_NODES,
655 F2FS_DIRTY_META,
8dcf2ff7 656 F2FS_INMEM_PAGES,
39a53e0c
JK
657 NR_COUNT_TYPE,
658};
659
39a53e0c 660/*
e1c42045 661 * The below are the page types of bios used in submit_bio().
39a53e0c
JK
662 * The available types are:
663 * DATA User data pages. It operates as async mode.
664 * NODE Node pages. It operates as async mode.
665 * META FS metadata pages such as SIT, NAT, CP.
666 * NR_PAGE_TYPE The number of page types.
667 * META_FLUSH Make sure the previous pages are written
668 * with waiting the bio's completion
669 * ... Only can be used with META.
670 */
7d5e5109 671#define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
39a53e0c
JK
672enum page_type {
673 DATA,
674 NODE,
675 META,
676 NR_PAGE_TYPE,
677 META_FLUSH,
8ce67cb0
JK
678 INMEM, /* the below types are used by tracepoints only. */
679 INMEM_DROP,
680 IPU,
681 OPU,
39a53e0c
JK
682};
683
458e6197 684struct f2fs_io_info {
05ca3632 685 struct f2fs_sb_info *sbi; /* f2fs_sb_info pointer */
7e8f2308
GZ
686 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
687 int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
cf04e8eb 688 block_t blk_addr; /* block address to be written */
05ca3632 689 struct page *page; /* page to be written */
4375a336 690 struct page *encrypted_page; /* encrypted page */
458e6197
JK
691};
692
93dfe2ac 693#define is_read_io(rw) (((rw) & 1) == READ)
1ff7bd3b 694struct f2fs_bio_info {
458e6197 695 struct f2fs_sb_info *sbi; /* f2fs superblock */
1ff7bd3b
JK
696 struct bio *bio; /* bios to merge */
697 sector_t last_block_in_bio; /* last block number */
458e6197 698 struct f2fs_io_info fio; /* store buffered io info. */
df0f8dc0 699 struct rw_semaphore io_rwsem; /* blocking op for bio */
1ff7bd3b
JK
700};
701
c227f912
CY
702enum inode_type {
703 DIR_INODE, /* for dirty dir inode */
704 FILE_INODE, /* for dirty regular/symlink inode */
705 NR_INODE_TYPE,
706};
707
67298804
CY
708/* for inner inode cache management */
709struct inode_management {
710 struct radix_tree_root ino_root; /* ino entry array */
711 spinlock_t ino_lock; /* for ino entry lock */
712 struct list_head ino_list; /* inode list head */
713 unsigned long ino_num; /* number of entries */
714};
715
caf0047e
CY
716/* For s_flag in struct f2fs_sb_info */
717enum {
718 SBI_IS_DIRTY, /* dirty flag for checkpoint */
719 SBI_IS_CLOSE, /* specify unmounting */
720 SBI_NEED_FSCK, /* need fsck.f2fs to fix */
721 SBI_POR_DOING, /* recovery is doing or not */
722};
723
39a53e0c
JK
724struct f2fs_sb_info {
725 struct super_block *sb; /* pointer to VFS super block */
5e176d54 726 struct proc_dir_entry *s_proc; /* proc entry */
39a53e0c 727 struct f2fs_super_block *raw_super; /* raw super block pointer */
e8240f65 728 int valid_super_block; /* valid super block no */
caf0047e 729 int s_flag; /* flags for sbi */
39a53e0c
JK
730
731 /* for node-related operations */
732 struct f2fs_nm_info *nm_info; /* node manager */
733 struct inode *node_inode; /* cache node blocks */
734
735 /* for segment-related operations */
736 struct f2fs_sm_info *sm_info; /* segment manager */
1ff7bd3b
JK
737
738 /* for bio operations */
924b720b 739 struct f2fs_bio_info read_io; /* for read bios */
1ff7bd3b 740 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */
39a53e0c
JK
741
742 /* for checkpoint */
743 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
744 struct inode *meta_inode; /* cache meta blocks */
39936837 745 struct mutex cp_mutex; /* checkpoint procedure lock */
e479556b 746 struct rw_semaphore cp_rwsem; /* blocking FS operations */
b3582c68 747 struct rw_semaphore node_write; /* locking node writes */
5463e7c1 748 struct mutex writepages; /* mutex for writepages() */
fb51b5ef 749 wait_queue_head_t cp_wait;
60b99b48 750 long cp_expires, cp_interval; /* next expected periodic cp */
39a53e0c 751
67298804 752 struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */
6451e041
JK
753
754 /* for orphan inode, use 0'th array */
0d47c1ad 755 unsigned int max_orphans; /* max orphan inodes */
39a53e0c 756
c227f912
CY
757 /* for inode management */
758 struct list_head inode_list[NR_INODE_TYPE]; /* dirty inode list */
759 spinlock_t inode_lock[NR_INODE_TYPE]; /* for dirty inode list lock */
39a53e0c 760
13054c54
CY
761 /* for extent tree cache */
762 struct radix_tree_root extent_tree_root;/* cache extent cache entries */
763 struct rw_semaphore extent_tree_lock; /* locking extent radix tree */
764 struct list_head extent_list; /* lru list for shrinker */
765 spinlock_t extent_lock; /* locking extent lru list */
7441ccef 766 atomic_t total_ext_tree; /* extent tree count */
74fd8d99 767 atomic_t total_zombie_tree; /* extent zombie tree count */
13054c54
CY
768 atomic_t total_ext_node; /* extent info count */
769
e1c42045 770 /* basic filesystem units */
39a53e0c
JK
771 unsigned int log_sectors_per_block; /* log2 sectors per block */
772 unsigned int log_blocksize; /* log2 block size */
773 unsigned int blocksize; /* block size */
774 unsigned int root_ino_num; /* root inode number*/
775 unsigned int node_ino_num; /* node inode number*/
776 unsigned int meta_ino_num; /* meta inode number*/
777 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
778 unsigned int blocks_per_seg; /* blocks per segment */
779 unsigned int segs_per_sec; /* segments per section */
780 unsigned int secs_per_zone; /* sections per zone */
781 unsigned int total_sections; /* total section count */
782 unsigned int total_node_count; /* total node block count */
783 unsigned int total_valid_node_count; /* valid node block count */
784 unsigned int total_valid_inode_count; /* valid inode count */
785 int active_logs; /* # of active logs */
ab9fa662 786 int dir_level; /* directory level */
39a53e0c
JK
787
788 block_t user_block_count; /* # of user blocks */
789 block_t total_valid_block_count; /* # of valid blocks */
790 block_t alloc_valid_block_count; /* # of allocated blocks */
a66cdd98 791 block_t discard_blks; /* discard command candidats */
39a53e0c
JK
792 block_t last_valid_block_count; /* for recovery */
793 u32 s_next_generation; /* for NFS support */
794 atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */
795
796 struct f2fs_mount_info mount_opt; /* mount options */
797
798 /* for cleaning operations */
799 struct mutex gc_mutex; /* mutex for GC */
800 struct f2fs_gc_kthread *gc_thread; /* GC thread */
5ec4e49f 801 unsigned int cur_victim_sec; /* current victim section num */
39a53e0c 802
b1c57c1c
JK
803 /* maximum # of trials to find a victim segment for SSR and GC */
804 unsigned int max_victim_search;
805
39a53e0c
JK
806 /*
807 * for stat information.
808 * one is for the LFS mode, and the other is for the SSR mode.
809 */
35b09d82 810#ifdef CONFIG_F2FS_STAT_FS
39a53e0c
JK
811 struct f2fs_stat_info *stat_info; /* FS status information */
812 unsigned int segment_count[2]; /* # of allocated segments */
813 unsigned int block_count[2]; /* # of allocated blocks */
b9a2c252 814 atomic_t inplace_count; /* # of inplace update */
5b7ee374
CY
815 atomic64_t total_hit_ext; /* # of lookup extent cache */
816 atomic64_t read_hit_rbtree; /* # of hit rbtree extent node */
817 atomic64_t read_hit_largest; /* # of hit largest extent node */
818 atomic64_t read_hit_cached; /* # of hit cached extent node */
d5e8f6c9 819 atomic_t inline_xattr; /* # of inline_xattr inodes */
03e14d52
CY
820 atomic_t inline_inode; /* # of inline_data inodes */
821 atomic_t inline_dir; /* # of inline_dentry inodes */
39a53e0c 822 int bg_gc; /* background gc calls */
33fbd510 823 unsigned int ndirty_inode[NR_INODE_TYPE]; /* # of dirty inodes */
35b09d82
NJ
824#endif
825 unsigned int last_victim[2]; /* last victim segment # */
39a53e0c 826 spinlock_t stat_lock; /* lock for stat operations */
b59d0bae
NJ
827
828 /* For sysfs suppport */
829 struct kobject s_kobj;
830 struct completion s_kobj_unregister;
2658e50d
JK
831
832 /* For shrinker support */
833 struct list_head s_list;
834 struct mutex umount_mutex;
835 unsigned int shrinker_run_no;
39a53e0c
JK
836};
837
838/*
839 * Inline functions
840 */
841static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
842{
843 return container_of(inode, struct f2fs_inode_info, vfs_inode);
844}
845
846static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
847{
848 return sb->s_fs_info;
849}
850
4081363f
JK
851static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
852{
853 return F2FS_SB(inode->i_sb);
854}
855
856static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
857{
858 return F2FS_I_SB(mapping->host);
859}
860
861static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
862{
863 return F2FS_M_SB(page->mapping);
864}
865
39a53e0c
JK
866static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
867{
868 return (struct f2fs_super_block *)(sbi->raw_super);
869}
870
871static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
872{
873 return (struct f2fs_checkpoint *)(sbi->ckpt);
874}
875
45590710
GZ
876static inline struct f2fs_node *F2FS_NODE(struct page *page)
877{
878 return (struct f2fs_node *)page_address(page);
879}
880
58bfaf44
JK
881static inline struct f2fs_inode *F2FS_INODE(struct page *page)
882{
883 return &((struct f2fs_node *)page_address(page))->i;
884}
885
39a53e0c
JK
886static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
887{
888 return (struct f2fs_nm_info *)(sbi->nm_info);
889}
890
891static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
892{
893 return (struct f2fs_sm_info *)(sbi->sm_info);
894}
895
896static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
897{
898 return (struct sit_info *)(SM_I(sbi)->sit_info);
899}
900
901static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
902{
903 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
904}
905
906static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
907{
908 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
909}
910
9df27d98
GZ
911static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
912{
913 return sbi->meta_inode->i_mapping;
914}
915
4ef51a8f
JK
916static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
917{
918 return sbi->node_inode->i_mapping;
919}
920
caf0047e
CY
921static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
922{
923 return sbi->s_flag & (0x01 << type);
924}
925
926static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
39a53e0c 927{
caf0047e 928 sbi->s_flag |= (0x01 << type);
39a53e0c
JK
929}
930
caf0047e 931static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
39a53e0c 932{
caf0047e 933 sbi->s_flag &= ~(0x01 << type);
39a53e0c
JK
934}
935
d71b5564
JK
936static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
937{
938 return le64_to_cpu(cp->checkpoint_ver);
939}
940
25ca923b
JK
941static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
942{
943 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
944 return ckpt_flags & f;
945}
946
947static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
948{
949 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
950 ckpt_flags |= f;
951 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
952}
953
954static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
955{
956 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
957 ckpt_flags &= (~f);
958 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
959}
960
e479556b 961static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
39936837 962{
e479556b 963 down_read(&sbi->cp_rwsem);
39936837
JK
964}
965
e479556b 966static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
39a53e0c 967{
e479556b 968 up_read(&sbi->cp_rwsem);
39a53e0c
JK
969}
970
e479556b 971static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
39a53e0c 972{
0daaad97 973 f2fs_down_write(&sbi->cp_rwsem, &sbi->cp_mutex);
39936837
JK
974}
975
e479556b 976static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
39936837 977{
e479556b 978 up_write(&sbi->cp_rwsem);
39a53e0c
JK
979}
980
119ee914
JK
981static inline int __get_cp_reason(struct f2fs_sb_info *sbi)
982{
983 int reason = CP_SYNC;
984
985 if (test_opt(sbi, FASTBOOT))
986 reason = CP_FASTBOOT;
987 if (is_sbi_flag_set(sbi, SBI_IS_CLOSE))
988 reason = CP_UMOUNT;
989 return reason;
990}
991
992static inline bool __remain_node_summaries(int reason)
993{
994 return (reason == CP_UMOUNT || reason == CP_FASTBOOT);
995}
996
997static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
998{
999 return (is_set_ckpt_flags(F2FS_CKPT(sbi), CP_UMOUNT_FLAG) ||
1000 is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FASTBOOT_FLAG));
1001}
1002
39a53e0c
JK
1003/*
1004 * Check whether the given nid is within node id range.
1005 */
064e0823 1006static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
39a53e0c 1007{
d6b7d4b3
CY
1008 if (unlikely(nid < F2FS_ROOT_INO(sbi)))
1009 return -EINVAL;
cfb271d4 1010 if (unlikely(nid >= NM_I(sbi)->max_nid))
064e0823
NJ
1011 return -EINVAL;
1012 return 0;
39a53e0c
JK
1013}
1014
1015#define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
1016
1017/*
1018 * Check whether the inode has blocks or not
1019 */
1020static inline int F2FS_HAS_BLOCKS(struct inode *inode)
1021{
1022 if (F2FS_I(inode)->i_xattr_nid)
6c311ec6 1023 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1;
39a53e0c 1024 else
6c311ec6 1025 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS;
39a53e0c
JK
1026}
1027
4bc8e9bc
CY
1028static inline bool f2fs_has_xattr_block(unsigned int ofs)
1029{
1030 return ofs == XATTR_NODE_OFFSET;
1031}
1032
39a53e0c
JK
1033static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
1034 struct inode *inode, blkcnt_t count)
1035{
1036 block_t valid_block_count;
1037
1038 spin_lock(&sbi->stat_lock);
1039 valid_block_count =
1040 sbi->total_valid_block_count + (block_t)count;
cfb271d4 1041 if (unlikely(valid_block_count > sbi->user_block_count)) {
39a53e0c
JK
1042 spin_unlock(&sbi->stat_lock);
1043 return false;
1044 }
1045 inode->i_blocks += count;
1046 sbi->total_valid_block_count = valid_block_count;
1047 sbi->alloc_valid_block_count += (block_t)count;
1048 spin_unlock(&sbi->stat_lock);
1049 return true;
1050}
1051
da19b0dc 1052static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
39a53e0c
JK
1053 struct inode *inode,
1054 blkcnt_t count)
1055{
1056 spin_lock(&sbi->stat_lock);
9850cf4a
JK
1057 f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
1058 f2fs_bug_on(sbi, inode->i_blocks < count);
39a53e0c
JK
1059 inode->i_blocks -= count;
1060 sbi->total_valid_block_count -= (block_t)count;
1061 spin_unlock(&sbi->stat_lock);
39a53e0c
JK
1062}
1063
1064static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
1065{
1066 atomic_inc(&sbi->nr_pages[count_type]);
caf0047e 1067 set_sbi_flag(sbi, SBI_IS_DIRTY);
39a53e0c
JK
1068}
1069
a7ffdbe2 1070static inline void inode_inc_dirty_pages(struct inode *inode)
39a53e0c 1071{
a7ffdbe2 1072 atomic_inc(&F2FS_I(inode)->dirty_pages);
c227f912
CY
1073 inc_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
1074 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
39a53e0c
JK
1075}
1076
1077static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
1078{
1079 atomic_dec(&sbi->nr_pages[count_type]);
1080}
1081
a7ffdbe2 1082static inline void inode_dec_dirty_pages(struct inode *inode)
39a53e0c 1083{
5ac9f36f
CY
1084 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
1085 !S_ISLNK(inode->i_mode))
1fe54f9d
JK
1086 return;
1087
a7ffdbe2 1088 atomic_dec(&F2FS_I(inode)->dirty_pages);
c227f912
CY
1089 dec_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
1090 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
39a53e0c
JK
1091}
1092
1093static inline int get_pages(struct f2fs_sb_info *sbi, int count_type)
1094{
1095 return atomic_read(&sbi->nr_pages[count_type]);
1096}
1097
a7ffdbe2 1098static inline int get_dirty_pages(struct inode *inode)
f8b2c1f9 1099{
a7ffdbe2 1100 return atomic_read(&F2FS_I(inode)->dirty_pages);
f8b2c1f9
JK
1101}
1102
5ac206cf
NJ
1103static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
1104{
3519e3f9 1105 unsigned int pages_per_sec = sbi->segs_per_sec * sbi->blocks_per_seg;
5ac206cf
NJ
1106 return ((get_pages(sbi, block_type) + pages_per_sec - 1)
1107 >> sbi->log_blocks_per_seg) / sbi->segs_per_sec;
1108}
1109
39a53e0c
JK
1110static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
1111{
8b8343fa 1112 return sbi->total_valid_block_count;
39a53e0c
JK
1113}
1114
1115static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
1116{
1117 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1118
1119 /* return NAT or SIT bitmap */
1120 if (flag == NAT_BITMAP)
1121 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
1122 else if (flag == SIT_BITMAP)
1123 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
1124
1125 return 0;
1126}
1127
55141486
WL
1128static inline block_t __cp_payload(struct f2fs_sb_info *sbi)
1129{
1130 return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
1131}
1132
39a53e0c
JK
1133static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
1134{
1135 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1dbe4152
CL
1136 int offset;
1137
55141486 1138 if (__cp_payload(sbi) > 0) {
1dbe4152
CL
1139 if (flag == NAT_BITMAP)
1140 return &ckpt->sit_nat_version_bitmap;
1141 else
65b85ccc 1142 return (unsigned char *)ckpt + F2FS_BLKSIZE;
1dbe4152
CL
1143 } else {
1144 offset = (flag == NAT_BITMAP) ?
25ca923b 1145 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
1dbe4152
CL
1146 return &ckpt->sit_nat_version_bitmap + offset;
1147 }
39a53e0c
JK
1148}
1149
1150static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
1151{
1152 block_t start_addr;
1153 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
d71b5564 1154 unsigned long long ckpt_version = cur_cp_version(ckpt);
39a53e0c 1155
25ca923b 1156 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
39a53e0c
JK
1157
1158 /*
1159 * odd numbered checkpoint should at cp segment 0
e1c42045 1160 * and even segment must be at cp segment 1
39a53e0c
JK
1161 */
1162 if (!(ckpt_version & 1))
1163 start_addr += sbi->blocks_per_seg;
1164
1165 return start_addr;
1166}
1167
1168static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
1169{
1170 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
1171}
1172
1173static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
ef86d709 1174 struct inode *inode)
39a53e0c
JK
1175{
1176 block_t valid_block_count;
1177 unsigned int valid_node_count;
1178
1179 spin_lock(&sbi->stat_lock);
1180
ef86d709 1181 valid_block_count = sbi->total_valid_block_count + 1;
cfb271d4 1182 if (unlikely(valid_block_count > sbi->user_block_count)) {
39a53e0c
JK
1183 spin_unlock(&sbi->stat_lock);
1184 return false;
1185 }
1186
ef86d709 1187 valid_node_count = sbi->total_valid_node_count + 1;
cfb271d4 1188 if (unlikely(valid_node_count > sbi->total_node_count)) {
39a53e0c
JK
1189 spin_unlock(&sbi->stat_lock);
1190 return false;
1191 }
1192
1193 if (inode)
ef86d709
GZ
1194 inode->i_blocks++;
1195
1196 sbi->alloc_valid_block_count++;
1197 sbi->total_valid_node_count++;
1198 sbi->total_valid_block_count++;
39a53e0c
JK
1199 spin_unlock(&sbi->stat_lock);
1200
1201 return true;
1202}
1203
1204static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
ef86d709 1205 struct inode *inode)
39a53e0c
JK
1206{
1207 spin_lock(&sbi->stat_lock);
1208
9850cf4a
JK
1209 f2fs_bug_on(sbi, !sbi->total_valid_block_count);
1210 f2fs_bug_on(sbi, !sbi->total_valid_node_count);
1211 f2fs_bug_on(sbi, !inode->i_blocks);
39a53e0c 1212
ef86d709
GZ
1213 inode->i_blocks--;
1214 sbi->total_valid_node_count--;
1215 sbi->total_valid_block_count--;
39a53e0c
JK
1216
1217 spin_unlock(&sbi->stat_lock);
1218}
1219
1220static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
1221{
8b8343fa 1222 return sbi->total_valid_node_count;
39a53e0c
JK
1223}
1224
1225static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
1226{
1227 spin_lock(&sbi->stat_lock);
9850cf4a 1228 f2fs_bug_on(sbi, sbi->total_valid_inode_count == sbi->total_node_count);
39a53e0c
JK
1229 sbi->total_valid_inode_count++;
1230 spin_unlock(&sbi->stat_lock);
1231}
1232
0e80220a 1233static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
39a53e0c
JK
1234{
1235 spin_lock(&sbi->stat_lock);
9850cf4a 1236 f2fs_bug_on(sbi, !sbi->total_valid_inode_count);
39a53e0c
JK
1237 sbi->total_valid_inode_count--;
1238 spin_unlock(&sbi->stat_lock);
39a53e0c
JK
1239}
1240
1241static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi)
1242{
8b8343fa 1243 return sbi->total_valid_inode_count;
39a53e0c
JK
1244}
1245
a56c7c6f
JK
1246static inline struct page *f2fs_grab_cache_page(struct address_space *mapping,
1247 pgoff_t index, bool for_write)
1248{
1249 if (!for_write)
1250 return grab_cache_page(mapping, index);
1251 return grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS);
1252}
1253
6e2c64ad
JK
1254static inline void f2fs_copy_page(struct page *src, struct page *dst)
1255{
1256 char *src_kaddr = kmap(src);
1257 char *dst_kaddr = kmap(dst);
1258
1259 memcpy(dst_kaddr, src_kaddr, PAGE_SIZE);
1260 kunmap(dst);
1261 kunmap(src);
1262}
1263
39a53e0c
JK
1264static inline void f2fs_put_page(struct page *page, int unlock)
1265{
031fa8cc 1266 if (!page)
39a53e0c
JK
1267 return;
1268
1269 if (unlock) {
9850cf4a 1270 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
39a53e0c
JK
1271 unlock_page(page);
1272 }
1273 page_cache_release(page);
1274}
1275
1276static inline void f2fs_put_dnode(struct dnode_of_data *dn)
1277{
1278 if (dn->node_page)
1279 f2fs_put_page(dn->node_page, 1);
1280 if (dn->inode_page && dn->node_page != dn->inode_page)
1281 f2fs_put_page(dn->inode_page, 0);
1282 dn->node_page = NULL;
1283 dn->inode_page = NULL;
1284}
1285
1286static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
e8512d2e 1287 size_t size)
39a53e0c 1288{
e8512d2e 1289 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
39a53e0c
JK
1290}
1291
7bd59381
GZ
1292static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
1293 gfp_t flags)
1294{
1295 void *entry;
7bd59381 1296
80c54505
JK
1297 entry = kmem_cache_alloc(cachep, flags);
1298 if (!entry)
1299 entry = kmem_cache_alloc(cachep, flags | __GFP_NOFAIL);
7bd59381
GZ
1300 return entry;
1301}
1302
740432f8
JK
1303static inline struct bio *f2fs_bio_alloc(int npages)
1304{
1305 struct bio *bio;
1306
1307 /* No failure on bio allocation */
740432f8 1308 bio = bio_alloc(GFP_NOIO, npages);
80c54505
JK
1309 if (!bio)
1310 bio = bio_alloc(GFP_NOIO | __GFP_NOFAIL, npages);
740432f8
JK
1311 return bio;
1312}
1313
9be32d72
JK
1314static inline void f2fs_radix_tree_insert(struct radix_tree_root *root,
1315 unsigned long index, void *item)
1316{
1317 while (radix_tree_insert(root, index, item))
1318 cond_resched();
1319}
1320
39a53e0c
JK
1321#define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1322
1323static inline bool IS_INODE(struct page *page)
1324{
45590710 1325 struct f2fs_node *p = F2FS_NODE(page);
39a53e0c
JK
1326 return RAW_IS_INODE(p);
1327}
1328
1329static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
1330{
1331 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
1332}
1333
1334static inline block_t datablock_addr(struct page *node_page,
1335 unsigned int offset)
1336{
1337 struct f2fs_node *raw_node;
1338 __le32 *addr_array;
45590710 1339 raw_node = F2FS_NODE(node_page);
39a53e0c
JK
1340 addr_array = blkaddr_in_node(raw_node);
1341 return le32_to_cpu(addr_array[offset]);
1342}
1343
1344static inline int f2fs_test_bit(unsigned int nr, char *addr)
1345{
1346 int mask;
1347
1348 addr += (nr >> 3);
1349 mask = 1 << (7 - (nr & 0x07));
1350 return mask & *addr;
1351}
1352
a66cdd98
JK
1353static inline void f2fs_set_bit(unsigned int nr, char *addr)
1354{
1355 int mask;
1356
1357 addr += (nr >> 3);
1358 mask = 1 << (7 - (nr & 0x07));
1359 *addr |= mask;
1360}
1361
1362static inline void f2fs_clear_bit(unsigned int nr, char *addr)
1363{
1364 int mask;
1365
1366 addr += (nr >> 3);
1367 mask = 1 << (7 - (nr & 0x07));
1368 *addr &= ~mask;
1369}
1370
52aca074 1371static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
39a53e0c
JK
1372{
1373 int mask;
1374 int ret;
1375
1376 addr += (nr >> 3);
1377 mask = 1 << (7 - (nr & 0x07));
1378 ret = mask & *addr;
1379 *addr |= mask;
1380 return ret;
1381}
1382
52aca074 1383static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
39a53e0c
JK
1384{
1385 int mask;
1386 int ret;
1387
1388 addr += (nr >> 3);
1389 mask = 1 << (7 - (nr & 0x07));
1390 ret = mask & *addr;
1391 *addr &= ~mask;
1392 return ret;
1393}
1394
c6ac4c0e
GZ
1395static inline void f2fs_change_bit(unsigned int nr, char *addr)
1396{
1397 int mask;
1398
1399 addr += (nr >> 3);
1400 mask = 1 << (7 - (nr & 0x07));
1401 *addr ^= mask;
1402}
1403
39a53e0c
JK
1404/* used for f2fs_inode_info->flags */
1405enum {
1406 FI_NEW_INODE, /* indicate newly allocated inode */
b3783873 1407 FI_DIRTY_INODE, /* indicate inode is dirty or not */
ed57c27f 1408 FI_DIRTY_DIR, /* indicate directory has dirty pages */
39a53e0c
JK
1409 FI_INC_LINK, /* need to increment i_nlink */
1410 FI_ACL_MODE, /* indicate acl mode */
1411 FI_NO_ALLOC, /* should not allocate any blocks */
c9b63bd0 1412 FI_FREE_NID, /* free allocated nide */
699489bb 1413 FI_UPDATE_DIR, /* should update inode block for consistency */
74d0b917 1414 FI_DELAY_IPUT, /* used for the recovery */
c11abd1a 1415 FI_NO_EXTENT, /* not to use the extent cache */
444c580f 1416 FI_INLINE_XATTR, /* used for inline xattr */
1001b347 1417 FI_INLINE_DATA, /* used for inline data*/
34d67deb 1418 FI_INLINE_DENTRY, /* used for inline dentry */
fff04f90
JK
1419 FI_APPEND_WRITE, /* inode has appended data */
1420 FI_UPDATE_WRITE, /* inode has in-place-update data */
88b88a66
JK
1421 FI_NEED_IPU, /* used for ipu per file */
1422 FI_ATOMIC_FILE, /* indicate atomic file */
02a1335f 1423 FI_VOLATILE_FILE, /* indicate volatile file */
3c6c2beb 1424 FI_FIRST_BLOCK_WRITTEN, /* indicate #0 data block was written */
1e84371f 1425 FI_DROP_CACHE, /* drop dirty page cache */
b3d208f9 1426 FI_DATA_EXIST, /* indicate data exists */
510022a8 1427 FI_INLINE_DOTS, /* indicate inline dot dentries */
d323d005 1428 FI_DO_DEFRAG, /* indicate defragment is running */
c227f912 1429 FI_DIRTY_FILE, /* indicate regular/symlink has dirty pages */
39a53e0c
JK
1430};
1431
1432static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag)
1433{
61e0f2d0
JK
1434 if (!test_bit(flag, &fi->flags))
1435 set_bit(flag, &fi->flags);
39a53e0c
JK
1436}
1437
1438static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag)
1439{
1440 return test_bit(flag, &fi->flags);
1441}
1442
1443static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag)
1444{
61e0f2d0
JK
1445 if (test_bit(flag, &fi->flags))
1446 clear_bit(flag, &fi->flags);
39a53e0c
JK
1447}
1448
1449static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode)
1450{
1451 fi->i_acl_mode = mode;
1452 set_inode_flag(fi, FI_ACL_MODE);
1453}
1454
444c580f
JK
1455static inline void get_inline_info(struct f2fs_inode_info *fi,
1456 struct f2fs_inode *ri)
1457{
1458 if (ri->i_inline & F2FS_INLINE_XATTR)
1459 set_inode_flag(fi, FI_INLINE_XATTR);
1001b347
HL
1460 if (ri->i_inline & F2FS_INLINE_DATA)
1461 set_inode_flag(fi, FI_INLINE_DATA);
34d67deb
CY
1462 if (ri->i_inline & F2FS_INLINE_DENTRY)
1463 set_inode_flag(fi, FI_INLINE_DENTRY);
b3d208f9
JK
1464 if (ri->i_inline & F2FS_DATA_EXIST)
1465 set_inode_flag(fi, FI_DATA_EXIST);
510022a8
JK
1466 if (ri->i_inline & F2FS_INLINE_DOTS)
1467 set_inode_flag(fi, FI_INLINE_DOTS);
444c580f
JK
1468}
1469
1470static inline void set_raw_inline(struct f2fs_inode_info *fi,
1471 struct f2fs_inode *ri)
1472{
1473 ri->i_inline = 0;
1474
1475 if (is_inode_flag_set(fi, FI_INLINE_XATTR))
1476 ri->i_inline |= F2FS_INLINE_XATTR;
1001b347
HL
1477 if (is_inode_flag_set(fi, FI_INLINE_DATA))
1478 ri->i_inline |= F2FS_INLINE_DATA;
34d67deb
CY
1479 if (is_inode_flag_set(fi, FI_INLINE_DENTRY))
1480 ri->i_inline |= F2FS_INLINE_DENTRY;
b3d208f9
JK
1481 if (is_inode_flag_set(fi, FI_DATA_EXIST))
1482 ri->i_inline |= F2FS_DATA_EXIST;
510022a8
JK
1483 if (is_inode_flag_set(fi, FI_INLINE_DOTS))
1484 ri->i_inline |= F2FS_INLINE_DOTS;
444c580f
JK
1485}
1486
987c7c31
CY
1487static inline int f2fs_has_inline_xattr(struct inode *inode)
1488{
1489 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR);
1490}
1491
de93653f
JK
1492static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi)
1493{
987c7c31 1494 if (f2fs_has_inline_xattr(&fi->vfs_inode))
de93653f
JK
1495 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
1496 return DEF_ADDRS_PER_INODE;
1497}
1498
65985d93
JK
1499static inline void *inline_xattr_addr(struct page *page)
1500{
695fd1ed 1501 struct f2fs_inode *ri = F2FS_INODE(page);
65985d93
JK
1502 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
1503 F2FS_INLINE_XATTR_ADDRS]);
1504}
1505
1506static inline int inline_xattr_size(struct inode *inode)
1507{
987c7c31 1508 if (f2fs_has_inline_xattr(inode))
65985d93
JK
1509 return F2FS_INLINE_XATTR_ADDRS << 2;
1510 else
1511 return 0;
1512}
1513
0dbdc2ae
JK
1514static inline int f2fs_has_inline_data(struct inode *inode)
1515{
1516 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA);
1517}
1518
b3d208f9
JK
1519static inline void f2fs_clear_inline_inode(struct inode *inode)
1520{
1521 clear_inode_flag(F2FS_I(inode), FI_INLINE_DATA);
1522 clear_inode_flag(F2FS_I(inode), FI_DATA_EXIST);
1523}
1524
1525static inline int f2fs_exist_data(struct inode *inode)
1526{
1527 return is_inode_flag_set(F2FS_I(inode), FI_DATA_EXIST);
1528}
1529
510022a8
JK
1530static inline int f2fs_has_inline_dots(struct inode *inode)
1531{
1532 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DOTS);
1533}
1534
88b88a66
JK
1535static inline bool f2fs_is_atomic_file(struct inode *inode)
1536{
1537 return is_inode_flag_set(F2FS_I(inode), FI_ATOMIC_FILE);
1538}
1539
02a1335f
JK
1540static inline bool f2fs_is_volatile_file(struct inode *inode)
1541{
1542 return is_inode_flag_set(F2FS_I(inode), FI_VOLATILE_FILE);
1543}
1544
3c6c2beb
JK
1545static inline bool f2fs_is_first_block_written(struct inode *inode)
1546{
1547 return is_inode_flag_set(F2FS_I(inode), FI_FIRST_BLOCK_WRITTEN);
1548}
1549
1e84371f
JK
1550static inline bool f2fs_is_drop_cache(struct inode *inode)
1551{
1552 return is_inode_flag_set(F2FS_I(inode), FI_DROP_CACHE);
1553}
1554
1001b347
HL
1555static inline void *inline_data_addr(struct page *page)
1556{
695fd1ed 1557 struct f2fs_inode *ri = F2FS_INODE(page);
1001b347
HL
1558 return (void *)&(ri->i_addr[1]);
1559}
1560
34d67deb
CY
1561static inline int f2fs_has_inline_dentry(struct inode *inode)
1562{
1563 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DENTRY);
1564}
1565
9486ba44
JK
1566static inline void f2fs_dentry_kunmap(struct inode *dir, struct page *page)
1567{
1568 if (!f2fs_has_inline_dentry(dir))
1569 kunmap(page);
1570}
1571
b5492af7
JK
1572static inline int is_file(struct inode *inode, int type)
1573{
1574 return F2FS_I(inode)->i_advise & type;
1575}
1576
1577static inline void set_file(struct inode *inode, int type)
1578{
1579 F2FS_I(inode)->i_advise |= type;
1580}
1581
1582static inline void clear_file(struct inode *inode, int type)
1583{
1584 F2FS_I(inode)->i_advise &= ~type;
1585}
1586
77888c1e
JK
1587static inline int f2fs_readonly(struct super_block *sb)
1588{
1589 return sb->s_flags & MS_RDONLY;
1590}
1591
1e968fdf
JK
1592static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
1593{
1594 return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1595}
1596
744602cf
JK
1597static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi)
1598{
1599 set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1600 sbi->sb->s_flags |= MS_RDONLY;
1601}
1602
eaa693f4
JK
1603static inline bool is_dot_dotdot(const struct qstr *str)
1604{
1605 if (str->len == 1 && str->name[0] == '.')
1606 return true;
1607
1608 if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.')
1609 return true;
1610
1611 return false;
1612}
1613
3e72f721
JK
1614static inline bool f2fs_may_extent_tree(struct inode *inode)
1615{
1616 mode_t mode = inode->i_mode;
1617
1618 if (!test_opt(F2FS_I_SB(inode), EXTENT_CACHE) ||
1619 is_inode_flag_set(F2FS_I(inode), FI_NO_EXTENT))
1620 return false;
1621
1622 return S_ISREG(mode);
1623}
1624
39307a8e
JK
1625static inline void *f2fs_kvmalloc(size_t size, gfp_t flags)
1626{
1627 void *ret;
1628
1629 ret = kmalloc(size, flags | __GFP_NOWARN);
1630 if (!ret)
1631 ret = __vmalloc(size, flags, PAGE_KERNEL);
1632 return ret;
1633}
1634
1635static inline void *f2fs_kvzalloc(size_t size, gfp_t flags)
1636{
1637 void *ret;
1638
1639 ret = kzalloc(size, flags | __GFP_NOWARN);
1640 if (!ret)
1641 ret = __vmalloc(size, flags | __GFP_ZERO, PAGE_KERNEL);
1642 return ret;
1643}
1644
a6dda0e6
CH
1645#define get_inode_mode(i) \
1646 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1647 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1648
267378d4
CY
1649/* get offset of first page in next direct node */
1650#define PGOFS_OF_NEXT_DNODE(pgofs, fi) \
1651 ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \
1652 (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \
1653 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi))
1654
39a53e0c
JK
1655/*
1656 * file.c
1657 */
1658int f2fs_sync_file(struct file *, loff_t, loff_t, int);
1659void truncate_data_blocks(struct dnode_of_data *);
764aa3e9 1660int truncate_blocks(struct inode *, u64, bool);
b0154891 1661int f2fs_truncate(struct inode *, bool);
2d4d9fb5 1662int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
39a53e0c
JK
1663int f2fs_setattr(struct dentry *, struct iattr *);
1664int truncate_hole(struct inode *, pgoff_t, pgoff_t);
b292dcab 1665int truncate_data_blocks_range(struct dnode_of_data *, int);
39a53e0c 1666long f2fs_ioctl(struct file *, unsigned int, unsigned long);
e9750824 1667long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long);
39a53e0c
JK
1668
1669/*
1670 * inode.c
1671 */
1672void f2fs_set_inode_flags(struct inode *);
39a53e0c 1673struct inode *f2fs_iget(struct super_block *, unsigned long);
4660f9c0 1674int try_to_free_nats(struct f2fs_sb_info *, int);
39a53e0c 1675void update_inode(struct inode *, struct page *);
744602cf 1676void update_inode_page(struct inode *);
39a53e0c
JK
1677int f2fs_write_inode(struct inode *, struct writeback_control *);
1678void f2fs_evict_inode(struct inode *);
44c16156 1679void handle_failed_inode(struct inode *);
39a53e0c
JK
1680
1681/*
1682 * namei.c
1683 */
1684struct dentry *f2fs_get_parent(struct dentry *child);
1685
1686/*
1687 * dir.c
1688 */
dbeacf02 1689extern unsigned char f2fs_filetype_table[F2FS_FT_MAX];
510022a8 1690void set_de_type(struct f2fs_dir_entry *, umode_t);
6e22c691
JK
1691
1692struct f2fs_dir_entry *find_target_dentry(struct f2fs_filename *,
1693 f2fs_hash_t, int *, struct f2fs_dentry_ptr *);
7b3cd7d6 1694bool f2fs_fill_dentries(struct dir_context *, struct f2fs_dentry_ptr *,
d8c6822a 1695 unsigned int, struct f2fs_str *);
062a3e7b
JK
1696void do_make_empty_dir(struct inode *, struct inode *,
1697 struct f2fs_dentry_ptr *);
dbeacf02 1698struct page *init_inode_metadata(struct inode *, struct inode *,
bce8d112 1699 const struct qstr *, struct page *);
dbeacf02 1700void update_parent_metadata(struct inode *, struct inode *, unsigned int);
a82afa20 1701int room_for_filename(const void *, int, int);
dbeacf02 1702void f2fs_drop_nlink(struct inode *, struct inode *, struct page *);
39a53e0c
JK
1703struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *,
1704 struct page **);
1705struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
1706ino_t f2fs_inode_by_name(struct inode *, struct qstr *);
1707void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
1708 struct page *, struct inode *);
e7d55452 1709int update_dent_inode(struct inode *, struct inode *, const struct qstr *);
510022a8 1710void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *,
3b4d732a 1711 const struct qstr *, f2fs_hash_t , unsigned int);
510022a8
JK
1712int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *, nid_t,
1713 umode_t);
dbeacf02
CY
1714void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *,
1715 struct inode *);
b97a9b5d 1716int f2fs_do_tmpfile(struct inode *, struct inode *);
39a53e0c
JK
1717bool f2fs_empty_dir(struct inode *);
1718
b7f7a5e0
AV
1719static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
1720{
2b0143b5 1721 return __f2fs_add_link(d_inode(dentry->d_parent), &dentry->d_name,
510022a8 1722 inode, inode->i_ino, inode->i_mode);
b7f7a5e0
AV
1723}
1724
39a53e0c
JK
1725/*
1726 * super.c
1727 */
c5bda1c8 1728int f2fs_commit_super(struct f2fs_sb_info *, bool);
39a53e0c 1729int f2fs_sync_fs(struct super_block *, int);
a07ef784
NJ
1730extern __printf(3, 4)
1731void f2fs_msg(struct super_block *, const char *, const char *, ...);
39a53e0c
JK
1732
1733/*
1734 * hash.c
1735 */
eee6160f 1736f2fs_hash_t f2fs_dentry_hash(const struct qstr *);
39a53e0c
JK
1737
1738/*
1739 * node.c
1740 */
1741struct dnode_of_data;
1742struct node_info;
1743
6fb03f3a 1744bool available_free_memory(struct f2fs_sb_info *, int);
2dcf51ab 1745int need_dentry_mark(struct f2fs_sb_info *, nid_t);
88bd02c9 1746bool is_checkpointed_node(struct f2fs_sb_info *, nid_t);
88bd02c9 1747bool need_inode_block_update(struct f2fs_sb_info *, nid_t);
39a53e0c
JK
1748void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
1749int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);
1750int truncate_inode_blocks(struct inode *, pgoff_t);
4f16fb0f 1751int truncate_xattr_node(struct inode *, struct page *);
cfe58f9d 1752int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t);
13ec7297 1753int remove_inode_page(struct inode *);
a014e037 1754struct page *new_inode_page(struct inode *);
8ae8f162 1755struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *);
39a53e0c
JK
1756void ra_node_page(struct f2fs_sb_info *, nid_t);
1757struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
1758struct page *get_node_page_ra(struct page *, int);
1759void sync_inode_page(struct dnode_of_data *);
1760int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *);
1761bool alloc_nid(struct f2fs_sb_info *, nid_t *);
1762void alloc_nid_done(struct f2fs_sb_info *, nid_t);
1763void alloc_nid_failed(struct f2fs_sb_info *, nid_t);
31696580 1764int try_to_free_nids(struct f2fs_sb_info *, int);
70cfed88 1765void recover_inline_xattr(struct inode *, struct page *);
1c35a90e 1766void recover_xattr_data(struct inode *, struct page *, block_t);
39a53e0c
JK
1767int recover_inode_page(struct f2fs_sb_info *, struct page *);
1768int restore_node_summary(struct f2fs_sb_info *, unsigned int,
1769 struct f2fs_summary_block *);
1770void flush_nat_entries(struct f2fs_sb_info *);
1771int build_node_manager(struct f2fs_sb_info *);
1772void destroy_node_manager(struct f2fs_sb_info *);
6e6093a8 1773int __init create_node_manager_caches(void);
39a53e0c
JK
1774void destroy_node_manager_caches(void);
1775
1776/*
1777 * segment.c
1778 */
88b88a66 1779void register_inmem_page(struct inode *, struct page *);
edb27dee 1780int commit_inmem_pages(struct inode *, bool);
39a53e0c 1781void f2fs_balance_fs(struct f2fs_sb_info *);
4660f9c0 1782void f2fs_balance_fs_bg(struct f2fs_sb_info *);
6b4afdd7 1783int f2fs_issue_flush(struct f2fs_sb_info *);
2163d198
GZ
1784int create_flush_cmd_control(struct f2fs_sb_info *);
1785void destroy_flush_cmd_control(struct f2fs_sb_info *);
39a53e0c 1786void invalidate_blocks(struct f2fs_sb_info *, block_t);
6e2c64ad 1787bool is_checkpointed_data(struct f2fs_sb_info *, block_t);
5e443818 1788void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t);
836b5a63 1789void clear_prefree_segments(struct f2fs_sb_info *, struct cp_control *);
4b2fecc8 1790void release_discard_addrs(struct f2fs_sb_info *);
e90c2d28 1791bool discard_next_dnode(struct f2fs_sb_info *, block_t);
3fa06d7b 1792int npages_for_summary_flush(struct f2fs_sb_info *, bool);
39a53e0c 1793void allocate_new_segments(struct f2fs_sb_info *);
4b2fecc8 1794int f2fs_trim_fs(struct f2fs_sb_info *, struct fstrim_range *);
39a53e0c 1795struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
381722d2 1796void update_meta_page(struct f2fs_sb_info *, void *, block_t);
577e3495 1797void write_meta_page(struct f2fs_sb_info *, struct page *);
05ca3632
JK
1798void write_node_page(unsigned int, struct f2fs_io_info *);
1799void write_data_page(struct dnode_of_data *, struct f2fs_io_info *);
1800void rewrite_data_page(struct f2fs_io_info *);
528e3459
CY
1801void f2fs_replace_block(struct f2fs_sb_info *, struct dnode_of_data *,
1802 block_t, block_t, unsigned char, bool);
bfad7c2d
JK
1803void allocate_data_block(struct f2fs_sb_info *, struct page *,
1804 block_t, block_t *, struct f2fs_summary *, int);
5514f0aa 1805void f2fs_wait_on_page_writeback(struct page *, enum page_type);
08b39fbd 1806void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info *, block_t);
39a53e0c
JK
1807void write_data_summaries(struct f2fs_sb_info *, block_t);
1808void write_node_summaries(struct f2fs_sb_info *, block_t);
1809int lookup_journal_in_cursum(struct f2fs_summary_block *,
1810 int, unsigned int, int);
4b2fecc8 1811void flush_sit_entries(struct f2fs_sb_info *, struct cp_control *);
39a53e0c 1812int build_segment_manager(struct f2fs_sb_info *);
39a53e0c 1813void destroy_segment_manager(struct f2fs_sb_info *);
7fd9e544
JK
1814int __init create_segment_manager_caches(void);
1815void destroy_segment_manager_caches(void);
39a53e0c
JK
1816
1817/*
1818 * checkpoint.c
1819 */
1820struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
1821struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
2b947003 1822struct page *get_tmp_page(struct f2fs_sb_info *, pgoff_t);
f0c9cada 1823bool is_valid_blkaddr(struct f2fs_sb_info *, block_t, int);
26879fb1 1824int ra_meta_pages(struct f2fs_sb_info *, block_t, int, int, bool);
635aee1f 1825void ra_meta_pages_cond(struct f2fs_sb_info *, pgoff_t);
39a53e0c 1826long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
a49324f1
CY
1827void add_ino_entry(struct f2fs_sb_info *, nid_t, int type);
1828void remove_ino_entry(struct f2fs_sb_info *, nid_t, int type);
1829void release_ino_entry(struct f2fs_sb_info *);
fff04f90 1830bool exist_written_data(struct f2fs_sb_info *, nid_t, int);
cbd56e7d
JK
1831int acquire_orphan_inode(struct f2fs_sb_info *);
1832void release_orphan_inode(struct f2fs_sb_info *);
39a53e0c
JK
1833void add_orphan_inode(struct f2fs_sb_info *, nid_t);
1834void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
8c14bfad 1835int recover_orphan_inodes(struct f2fs_sb_info *);
39a53e0c 1836int get_valid_checkpoint(struct f2fs_sb_info *);
a7ffdbe2 1837void update_dirty_page(struct inode *, struct page *);
5deb8267 1838void add_dirty_dir_inode(struct inode *);
c227f912
CY
1839void remove_dirty_inode(struct inode *);
1840void sync_dirty_inodes(struct f2fs_sb_info *, enum inode_type);
75ab4cb8 1841void write_checkpoint(struct f2fs_sb_info *, struct cp_control *);
6451e041 1842void init_ino_entry_info(struct f2fs_sb_info *);
6e6093a8 1843int __init create_checkpoint_caches(void);
39a53e0c
JK
1844void destroy_checkpoint_caches(void);
1845
1846/*
1847 * data.c
1848 */
458e6197 1849void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int);
05ca3632
JK
1850int f2fs_submit_page_bio(struct f2fs_io_info *);
1851void f2fs_submit_page_mbio(struct f2fs_io_info *);
216a620a 1852void set_data_blkaddr(struct dnode_of_data *);
39a53e0c 1853int reserve_new_block(struct dnode_of_data *);
759af1c9 1854int f2fs_get_block(struct dnode_of_data *, pgoff_t);
b600965c 1855int f2fs_reserve_block(struct dnode_of_data *, pgoff_t);
a56c7c6f 1856struct page *get_read_data_page(struct inode *, pgoff_t, int, bool);
43f3eae1 1857struct page *find_data_page(struct inode *, pgoff_t);
a56c7c6f 1858struct page *get_lock_data_page(struct inode *, pgoff_t, bool);
64aa7ed9 1859struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
05ca3632 1860int do_write_data_page(struct f2fs_io_info *);
d323d005 1861int f2fs_map_blocks(struct inode *, struct f2fs_map_blocks *, int, int);
9ab70134 1862int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64);
487261f3
CY
1863void f2fs_invalidate_page(struct page *, unsigned int, unsigned int);
1864int f2fs_release_page(struct page *, gfp_t);
39a53e0c
JK
1865
1866/*
1867 * gc.c
1868 */
1869int start_gc_thread(struct f2fs_sb_info *);
1870void stop_gc_thread(struct f2fs_sb_info *);
de93653f 1871block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *);
d530d4d8 1872int f2fs_gc(struct f2fs_sb_info *, bool);
39a53e0c 1873void build_gc_manager(struct f2fs_sb_info *);
39a53e0c
JK
1874
1875/*
1876 * recovery.c
1877 */
6ead1142 1878int recover_fsync_data(struct f2fs_sb_info *);
39a53e0c
JK
1879bool space_for_roll_forward(struct f2fs_sb_info *);
1880
1881/*
1882 * debug.c
1883 */
1884#ifdef CONFIG_F2FS_STAT_FS
1885struct f2fs_stat_info {
1886 struct list_head stat_list;
1887 struct f2fs_sb_info *sbi;
39a53e0c
JK
1888 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
1889 int main_area_segs, main_area_sections, main_area_zones;
5b7ee374
CY
1890 unsigned long long hit_largest, hit_cached, hit_rbtree;
1891 unsigned long long hit_total, total_ext;
029e13cc 1892 int ext_tree, ext_node;
33fbd510
CY
1893 int ndirty_node, ndirty_meta;
1894 int ndirty_dent, ndirty_dirs, ndirty_data, ndirty_files;
dd4e4b59 1895 int nats, dirty_nats, sits, dirty_sits, fnids;
39a53e0c 1896 int total_count, utilization;
d5e8f6c9
CY
1897 int bg_gc, inmem_pages, wb_pages;
1898 int inline_xattr, inline_inode, inline_dir;
39a53e0c
JK
1899 unsigned int valid_count, valid_node_count, valid_inode_count;
1900 unsigned int bimodal, avg_vblocks;
1901 int util_free, util_valid, util_invalid;
1902 int rsvd_segs, overp_segs;
1903 int dirty_count, node_pages, meta_pages;
942e0be6 1904 int prefree_count, call_count, cp_count;
39a53e0c 1905 int tot_segs, node_segs, data_segs, free_segs, free_secs;
e1235983 1906 int bg_node_segs, bg_data_segs;
39a53e0c 1907 int tot_blks, data_blks, node_blks;
e1235983 1908 int bg_data_blks, bg_node_blks;
39a53e0c
JK
1909 int curseg[NR_CURSEG_TYPE];
1910 int cursec[NR_CURSEG_TYPE];
1911 int curzone[NR_CURSEG_TYPE];
1912
1913 unsigned int segment_count[2];
1914 unsigned int block_count[2];
b9a2c252 1915 unsigned int inplace_count;
9edcdabf 1916 unsigned long long base_mem, cache_mem, page_mem;
39a53e0c
JK
1917};
1918
963d4f7d
GZ
1919static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
1920{
6c311ec6 1921 return (struct f2fs_stat_info *)sbi->stat_info;
963d4f7d
GZ
1922}
1923
942e0be6 1924#define stat_inc_cp_count(si) ((si)->cp_count++)
dcdfff65
JK
1925#define stat_inc_call_count(si) ((si)->call_count++)
1926#define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
33fbd510
CY
1927#define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++)
1928#define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--)
5b7ee374
CY
1929#define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext))
1930#define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree))
1931#define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest))
1932#define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached))
d5e8f6c9
CY
1933#define stat_inc_inline_xattr(inode) \
1934 do { \
1935 if (f2fs_has_inline_xattr(inode)) \
1936 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
1937 } while (0)
1938#define stat_dec_inline_xattr(inode) \
1939 do { \
1940 if (f2fs_has_inline_xattr(inode)) \
1941 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
1942 } while (0)
0dbdc2ae
JK
1943#define stat_inc_inline_inode(inode) \
1944 do { \
1945 if (f2fs_has_inline_data(inode)) \
03e14d52 1946 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
0dbdc2ae
JK
1947 } while (0)
1948#define stat_dec_inline_inode(inode) \
1949 do { \
1950 if (f2fs_has_inline_data(inode)) \
03e14d52 1951 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
0dbdc2ae 1952 } while (0)
3289c061
JK
1953#define stat_inc_inline_dir(inode) \
1954 do { \
1955 if (f2fs_has_inline_dentry(inode)) \
03e14d52 1956 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
3289c061
JK
1957 } while (0)
1958#define stat_dec_inline_dir(inode) \
1959 do { \
1960 if (f2fs_has_inline_dentry(inode)) \
03e14d52 1961 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
3289c061 1962 } while (0)
dcdfff65
JK
1963#define stat_inc_seg_type(sbi, curseg) \
1964 ((sbi)->segment_count[(curseg)->alloc_type]++)
1965#define stat_inc_block_count(sbi, curseg) \
1966 ((sbi)->block_count[(curseg)->alloc_type]++)
b9a2c252
CL
1967#define stat_inc_inplace_blocks(sbi) \
1968 (atomic_inc(&(sbi)->inplace_count))
e1235983 1969#define stat_inc_seg_count(sbi, type, gc_type) \
39a53e0c 1970 do { \
963d4f7d 1971 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
39a53e0c 1972 (si)->tot_segs++; \
e1235983 1973 if (type == SUM_TYPE_DATA) { \
39a53e0c 1974 si->data_segs++; \
e1235983
CL
1975 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
1976 } else { \
39a53e0c 1977 si->node_segs++; \
e1235983
CL
1978 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
1979 } \
39a53e0c
JK
1980 } while (0)
1981
1982#define stat_inc_tot_blk_count(si, blks) \
1983 (si->tot_blks += (blks))
1984
e1235983 1985#define stat_inc_data_blk_count(sbi, blks, gc_type) \
39a53e0c 1986 do { \
963d4f7d 1987 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
39a53e0c
JK
1988 stat_inc_tot_blk_count(si, blks); \
1989 si->data_blks += (blks); \
e1235983 1990 si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \
39a53e0c
JK
1991 } while (0)
1992
e1235983 1993#define stat_inc_node_blk_count(sbi, blks, gc_type) \
39a53e0c 1994 do { \
963d4f7d 1995 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
39a53e0c
JK
1996 stat_inc_tot_blk_count(si, blks); \
1997 si->node_blks += (blks); \
e1235983 1998 si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \
39a53e0c
JK
1999 } while (0)
2000
2001int f2fs_build_stats(struct f2fs_sb_info *);
2002void f2fs_destroy_stats(struct f2fs_sb_info *);
787c7b8c 2003int __init f2fs_create_root_stats(void);
4589d25d 2004void f2fs_destroy_root_stats(void);
39a53e0c 2005#else
942e0be6 2006#define stat_inc_cp_count(si)
39a53e0c 2007#define stat_inc_call_count(si)
dcdfff65 2008#define stat_inc_bggc_count(si)
33fbd510
CY
2009#define stat_inc_dirty_inode(sbi, type)
2010#define stat_dec_dirty_inode(sbi, type)
dcdfff65 2011#define stat_inc_total_hit(sb)
029e13cc 2012#define stat_inc_rbtree_node_hit(sb)
91c481ff
CY
2013#define stat_inc_largest_node_hit(sbi)
2014#define stat_inc_cached_node_hit(sbi)
d5e8f6c9
CY
2015#define stat_inc_inline_xattr(inode)
2016#define stat_dec_inline_xattr(inode)
0dbdc2ae
JK
2017#define stat_inc_inline_inode(inode)
2018#define stat_dec_inline_inode(inode)
3289c061
JK
2019#define stat_inc_inline_dir(inode)
2020#define stat_dec_inline_dir(inode)
dcdfff65
JK
2021#define stat_inc_seg_type(sbi, curseg)
2022#define stat_inc_block_count(sbi, curseg)
b9a2c252 2023#define stat_inc_inplace_blocks(sbi)
e1235983 2024#define stat_inc_seg_count(sbi, type, gc_type)
39a53e0c 2025#define stat_inc_tot_blk_count(si, blks)
e1235983
CL
2026#define stat_inc_data_blk_count(sbi, blks, gc_type)
2027#define stat_inc_node_blk_count(sbi, blks, gc_type)
39a53e0c
JK
2028
2029static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
2030static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
787c7b8c 2031static inline int __init f2fs_create_root_stats(void) { return 0; }
4589d25d 2032static inline void f2fs_destroy_root_stats(void) { }
39a53e0c
JK
2033#endif
2034
2035extern const struct file_operations f2fs_dir_operations;
2036extern const struct file_operations f2fs_file_operations;
2037extern const struct inode_operations f2fs_file_inode_operations;
2038extern const struct address_space_operations f2fs_dblock_aops;
2039extern const struct address_space_operations f2fs_node_aops;
2040extern const struct address_space_operations f2fs_meta_aops;
2041extern const struct inode_operations f2fs_dir_inode_operations;
2042extern const struct inode_operations f2fs_symlink_inode_operations;
cbaf042a 2043extern const struct inode_operations f2fs_encrypted_symlink_inode_operations;
39a53e0c 2044extern const struct inode_operations f2fs_special_inode_operations;
29e7043f 2045extern struct kmem_cache *inode_entry_slab;
1001b347 2046
e18c65b2
HL
2047/*
2048 * inline.c
2049 */
01b960e9
JK
2050bool f2fs_may_inline_data(struct inode *);
2051bool f2fs_may_inline_dentry(struct inode *);
b3d208f9 2052void read_inline_data(struct page *, struct page *);
0bfcfcca 2053bool truncate_inline_inode(struct page *, u64);
e18c65b2 2054int f2fs_read_inline_data(struct inode *, struct page *);
b3d208f9
JK
2055int f2fs_convert_inline_page(struct dnode_of_data *, struct page *);
2056int f2fs_convert_inline_inode(struct inode *);
2057int f2fs_write_inline_data(struct inode *, struct page *);
0342fd30 2058bool recover_inline_data(struct inode *, struct page *);
6e22c691
JK
2059struct f2fs_dir_entry *find_in_inline_dir(struct inode *,
2060 struct f2fs_filename *, struct page **);
201a05be
CY
2061struct f2fs_dir_entry *f2fs_parent_inline_dir(struct inode *, struct page **);
2062int make_empty_inline_dir(struct inode *inode, struct inode *, struct page *);
510022a8
JK
2063int f2fs_add_inline_entry(struct inode *, const struct qstr *, struct inode *,
2064 nid_t, umode_t);
201a05be
CY
2065void f2fs_delete_inline_entry(struct f2fs_dir_entry *, struct page *,
2066 struct inode *, struct inode *);
2067bool f2fs_empty_inline_dir(struct inode *);
d8c6822a
JK
2068int f2fs_read_inline_dir(struct file *, struct dir_context *,
2069 struct f2fs_str *);
67f8cf3c
JK
2070int f2fs_inline_data_fiemap(struct inode *,
2071 struct fiemap_extent_info *, __u64, __u64);
cde4de12 2072
2658e50d
JK
2073/*
2074 * shrinker.c
2075 */
2076unsigned long f2fs_shrink_count(struct shrinker *, struct shrink_control *);
2077unsigned long f2fs_shrink_scan(struct shrinker *, struct shrink_control *);
2078void f2fs_join_shrinker(struct f2fs_sb_info *);
2079void f2fs_leave_shrinker(struct f2fs_sb_info *);
2080
a28ef1f5
CY
2081/*
2082 * extent_cache.c
2083 */
2084unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *, int);
a28ef1f5
CY
2085void f2fs_init_extent_tree(struct inode *, struct f2fs_extent *);
2086unsigned int f2fs_destroy_extent_node(struct inode *);
2087void f2fs_destroy_extent_tree(struct inode *);
2088bool f2fs_lookup_extent_cache(struct inode *, pgoff_t, struct extent_info *);
2089void f2fs_update_extent_cache(struct dnode_of_data *);
19b2c30d
CY
2090void f2fs_update_extent_cache_range(struct dnode_of_data *dn,
2091 pgoff_t, block_t, unsigned int);
a28ef1f5
CY
2092void init_extent_cache_info(struct f2fs_sb_info *);
2093int __init create_extent_cache(void);
2094void destroy_extent_cache(void);
2095
cde4de12
JK
2096/*
2097 * crypto support
2098 */
2099static inline int f2fs_encrypted_inode(struct inode *inode)
2100{
2101#ifdef CONFIG_F2FS_FS_ENCRYPTION
2102 return file_is_encrypt(inode);
2103#else
2104 return 0;
2105#endif
2106}
2107
2108static inline void f2fs_set_encrypted_inode(struct inode *inode)
2109{
2110#ifdef CONFIG_F2FS_FS_ENCRYPTION
2111 file_set_encrypt(inode);
2112#endif
2113}
2114
2115static inline bool f2fs_bio_encrypted(struct bio *bio)
2116{
2117#ifdef CONFIG_F2FS_FS_ENCRYPTION
2118 return unlikely(bio->bi_private != NULL);
2119#else
2120 return false;
2121#endif
2122}
2123
2124static inline int f2fs_sb_has_crypto(struct super_block *sb)
2125{
2126#ifdef CONFIG_F2FS_FS_ENCRYPTION
2127 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_ENCRYPT);
2128#else
2129 return 0;
2130#endif
2131}
f424f664 2132
fcc85a4d
JK
2133static inline bool f2fs_may_encrypt(struct inode *inode)
2134{
2135#ifdef CONFIG_F2FS_FS_ENCRYPTION
2136 mode_t mode = inode->i_mode;
2137
2138 return (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode));
2139#else
2140 return 0;
2141#endif
2142}
2143
f424f664
JK
2144/* crypto_policy.c */
2145int f2fs_is_child_context_consistent_with_parent(struct inode *,
2146 struct inode *);
2147int f2fs_inherit_context(struct inode *, struct inode *, struct page *);
2148int f2fs_process_policy(const struct f2fs_encryption_policy *, struct inode *);
2149int f2fs_get_policy(struct inode *, struct f2fs_encryption_policy *);
57e5055b
JK
2150
2151/* crypt.c */
8bacf6de 2152extern struct kmem_cache *f2fs_crypt_info_cachep;
57e5055b
JK
2153bool f2fs_valid_contents_enc_mode(uint32_t);
2154uint32_t f2fs_validate_encryption_key_size(uint32_t, uint32_t);
2155struct f2fs_crypto_ctx *f2fs_get_crypto_ctx(struct inode *);
2156void f2fs_release_crypto_ctx(struct f2fs_crypto_ctx *);
2157struct page *f2fs_encrypt(struct inode *, struct page *);
2158int f2fs_decrypt(struct f2fs_crypto_ctx *, struct page *);
2159int f2fs_decrypt_one(struct inode *, struct page *);
2160void f2fs_end_io_crypto_work(struct f2fs_crypto_ctx *, struct bio *);
2161
0adda907 2162/* crypto_key.c */
26bf3dc7 2163void f2fs_free_encryption_info(struct inode *, struct f2fs_crypt_info *);
0adda907
JK
2164int _f2fs_get_encryption_info(struct inode *inode);
2165
6b3bd08f
JK
2166/* crypto_fname.c */
2167bool f2fs_valid_filenames_enc_mode(uint32_t);
2168u32 f2fs_fname_crypto_round_up(u32, u32);
2169int f2fs_fname_crypto_alloc_buffer(struct inode *, u32, struct f2fs_str *);
2170int f2fs_fname_disk_to_usr(struct inode *, f2fs_hash_t *,
2171 const struct f2fs_str *, struct f2fs_str *);
2172int f2fs_fname_usr_to_disk(struct inode *, const struct qstr *,
2173 struct f2fs_str *);
2174
57e5055b
JK
2175#ifdef CONFIG_F2FS_FS_ENCRYPTION
2176void f2fs_restore_and_release_control_page(struct page **);
2177void f2fs_restore_control_page(struct page *);
2178
cfc4d971
JK
2179int __init f2fs_init_crypto(void);
2180int f2fs_crypto_initialize(void);
57e5055b 2181void f2fs_exit_crypto(void);
0adda907
JK
2182
2183int f2fs_has_encryption_key(struct inode *);
2184
2185static inline int f2fs_get_encryption_info(struct inode *inode)
2186{
2187 struct f2fs_crypt_info *ci = F2FS_I(inode)->i_crypt_info;
2188
2189 if (!ci ||
2190 (ci->ci_keyring_key &&
2191 (ci->ci_keyring_key->flags & ((1 << KEY_FLAG_INVALIDATED) |
2192 (1 << KEY_FLAG_REVOKED) |
2193 (1 << KEY_FLAG_DEAD)))))
2194 return _f2fs_get_encryption_info(inode);
2195 return 0;
2196}
6b3bd08f 2197
6b3bd08f
JK
2198void f2fs_fname_crypto_free_buffer(struct f2fs_str *);
2199int f2fs_fname_setup_filename(struct inode *, const struct qstr *,
2200 int lookup, struct f2fs_filename *);
2201void f2fs_fname_free_filename(struct f2fs_filename *);
57e5055b
JK
2202#else
2203static inline void f2fs_restore_and_release_control_page(struct page **p) { }
2204static inline void f2fs_restore_control_page(struct page *p) { }
2205
cfc4d971 2206static inline int __init f2fs_init_crypto(void) { return 0; }
57e5055b 2207static inline void f2fs_exit_crypto(void) { }
0adda907
JK
2208
2209static inline int f2fs_has_encryption_key(struct inode *i) { return 0; }
2210static inline int f2fs_get_encryption_info(struct inode *i) { return 0; }
6b3bd08f
JK
2211static inline void f2fs_fname_crypto_free_buffer(struct f2fs_str *p) { }
2212
2213static inline int f2fs_fname_setup_filename(struct inode *dir,
2214 const struct qstr *iname,
2215 int lookup, struct f2fs_filename *fname)
2216{
2217 memset(fname, 0, sizeof(struct f2fs_filename));
2218 fname->usr_fname = iname;
2219 fname->disk_name.name = (unsigned char *)iname->name;
2220 fname->disk_name.len = iname->len;
2221 return 0;
2222}
2223
2224static inline void f2fs_fname_free_filename(struct f2fs_filename *fname) { }
57e5055b 2225#endif
39a53e0c 2226#endif