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0a8165d7 1/*
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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>
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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>
d0239e1b 24#include <linux/blkdev.h>
39a53e0c 25
5d56b671 26#ifdef CONFIG_F2FS_CHECK_FS
9850cf4a 27#define f2fs_bug_on(sbi, condition) BUG_ON(condition)
0daaad97 28#define f2fs_down_write(x, y) down_write_nest_lock(x, y)
5d56b671 29#else
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30#define f2fs_bug_on(sbi, condition) \
31 do { \
32 if (unlikely(condition)) { \
33 WARN_ON(1); \
caf0047e 34 set_sbi_flag(sbi, SBI_NEED_FSCK); \
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35 } \
36 } while (0)
0daaad97 37#define f2fs_down_write(x, y) down_write(x)
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38#endif
39
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40/*
41 * For mount options
42 */
43#define F2FS_MOUNT_BG_GC 0x00000001
44#define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
45#define F2FS_MOUNT_DISCARD 0x00000004
46#define F2FS_MOUNT_NOHEAP 0x00000008
47#define F2FS_MOUNT_XATTR_USER 0x00000010
48#define F2FS_MOUNT_POSIX_ACL 0x00000020
49#define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
444c580f 50#define F2FS_MOUNT_INLINE_XATTR 0x00000080
1001b347 51#define F2FS_MOUNT_INLINE_DATA 0x00000100
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52#define F2FS_MOUNT_INLINE_DENTRY 0x00000200
53#define F2FS_MOUNT_FLUSH_MERGE 0x00000400
54#define F2FS_MOUNT_NOBARRIER 0x00000800
d5053a34 55#define F2FS_MOUNT_FASTBOOT 0x00001000
89672159 56#define F2FS_MOUNT_EXTENT_CACHE 0x00002000
6aefd93b 57#define F2FS_MOUNT_FORCE_FG_GC 0x00004000
343f40f0 58#define F2FS_MOUNT_DATA_FLUSH 0x00008000
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59
60#define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
61#define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
62#define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
63
64#define ver_after(a, b) (typecheck(unsigned long long, a) && \
65 typecheck(unsigned long long, b) && \
66 ((long long)((a) - (b)) > 0))
67
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68typedef u32 block_t; /*
69 * should not change u32, since it is the on-disk block
70 * address format, __le32.
71 */
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72typedef u32 nid_t;
73
74struct f2fs_mount_info {
75 unsigned int opt;
76};
77
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78#define F2FS_FEATURE_ENCRYPT 0x0001
79
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80#define F2FS_HAS_FEATURE(sb, mask) \
81 ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
82#define F2FS_SET_FEATURE(sb, mask) \
83 F2FS_SB(sb)->raw_super->feature |= cpu_to_le32(mask)
84#define F2FS_CLEAR_FEATURE(sb, mask) \
85 F2FS_SB(sb)->raw_super->feature &= ~cpu_to_le32(mask)
86
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87#define CRCPOLY_LE 0xedb88320
88
89static inline __u32 f2fs_crc32(void *buf, size_t len)
39a53e0c 90{
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91 unsigned char *p = (unsigned char *)buf;
92 __u32 crc = F2FS_SUPER_MAGIC;
93 int i;
94
95 while (len--) {
96 crc ^= *p++;
97 for (i = 0; i < 8; i++)
98 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
99 }
100 return crc;
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101}
102
7e586fa0 103static inline bool f2fs_crc_valid(__u32 blk_crc, void *buf, size_t buf_size)
39a53e0c 104{
7e586fa0 105 return f2fs_crc32(buf, buf_size) == blk_crc;
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106}
107
108/*
109 * For checkpoint manager
110 */
111enum {
112 NAT_BITMAP,
113 SIT_BITMAP
114};
115
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116enum {
117 CP_UMOUNT,
119ee914 118 CP_FASTBOOT,
75ab4cb8 119 CP_SYNC,
10027551 120 CP_RECOVERY,
4b2fecc8 121 CP_DISCARD,
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122};
123
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124#define DEF_BATCHED_TRIM_SECTIONS 32
125#define BATCHED_TRIM_SEGMENTS(sbi) \
126 (SM_I(sbi)->trim_sections * (sbi)->segs_per_sec)
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127#define BATCHED_TRIM_BLOCKS(sbi) \
128 (BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg)
60b99b48 129#define DEF_CP_INTERVAL 60 /* 60 secs */
d0239e1b 130#define DEF_IDLE_INTERVAL 120 /* 2 mins */
bba681cb 131
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132struct cp_control {
133 int reason;
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134 __u64 trim_start;
135 __u64 trim_end;
136 __u64 trim_minlen;
137 __u64 trimmed;
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138};
139
662befda 140/*
81c1a0f1 141 * For CP/NAT/SIT/SSA readahead
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142 */
143enum {
144 META_CP,
145 META_NAT,
81c1a0f1 146 META_SIT,
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147 META_SSA,
148 META_POR,
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149};
150
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151/* for the list of ino */
152enum {
153 ORPHAN_INO, /* for orphan ino list */
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154 APPEND_INO, /* for append ino list */
155 UPDATE_INO, /* for update ino list */
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156 MAX_INO_ENTRY, /* max. list */
157};
158
159struct ino_entry {
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160 struct list_head list; /* list head */
161 nid_t ino; /* inode number */
162};
163
2710fd7e 164/* for the list of inodes to be GCed */
06292073 165struct inode_entry {
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166 struct list_head list; /* list head */
167 struct inode *inode; /* vfs inode pointer */
168};
169
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170/* for the list of blockaddresses to be discarded */
171struct discard_entry {
172 struct list_head list; /* list head */
173 block_t blkaddr; /* block address to be discarded */
174 int len; /* # of consecutive blocks of the discard */
175};
176
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177/* for the list of fsync inodes, used only during recovery */
178struct fsync_inode_entry {
179 struct list_head list; /* list head */
180 struct inode *inode; /* vfs inode pointer */
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181 block_t blkaddr; /* block address locating the last fsync */
182 block_t last_dentry; /* block address locating the last dentry */
183 block_t last_inode; /* block address locating the last inode */
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184};
185
186#define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
187#define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
188
189#define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
190#define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
191#define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
192#define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
193
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194#define MAX_NAT_JENTRIES(sum) (NAT_JOURNAL_ENTRIES - nats_in_cursum(sum))
195#define MAX_SIT_JENTRIES(sum) (SIT_JOURNAL_ENTRIES - sits_in_cursum(sum))
196
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197static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i)
198{
199 int before = nats_in_cursum(rs);
200 rs->n_nats = cpu_to_le16(before + i);
201 return before;
202}
203
204static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i)
205{
206 int before = sits_in_cursum(rs);
207 rs->n_sits = cpu_to_le16(before + i);
208 return before;
209}
210
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211static inline bool __has_cursum_space(struct f2fs_summary_block *sum, int size,
212 int type)
213{
214 if (type == NAT_JOURNAL)
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215 return size <= MAX_NAT_JENTRIES(sum);
216 return size <= MAX_SIT_JENTRIES(sum);
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217}
218
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219/*
220 * ioctl commands
221 */
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222#define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
223#define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
d49f3e89 224#define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
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225
226#define F2FS_IOCTL_MAGIC 0xf5
227#define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
228#define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
02a1335f 229#define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
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230#define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
231#define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
c1c1b583 232#define F2FS_IOC_GARBAGE_COLLECT _IO(F2FS_IOCTL_MAGIC, 6)
456b88e4 233#define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7)
d323d005 234#define F2FS_IOC_DEFRAGMENT _IO(F2FS_IOCTL_MAGIC, 8)
e9750824 235
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236#define F2FS_IOC_SET_ENCRYPTION_POLICY \
237 _IOR('f', 19, struct f2fs_encryption_policy)
238#define F2FS_IOC_GET_ENCRYPTION_PWSALT \
239 _IOW('f', 20, __u8[16])
240#define F2FS_IOC_GET_ENCRYPTION_POLICY \
241 _IOW('f', 21, struct f2fs_encryption_policy)
242
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243/*
244 * should be same as XFS_IOC_GOINGDOWN.
245 * Flags for going down operation used by FS_IOC_GOINGDOWN
246 */
247#define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
248#define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
249#define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
250#define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
c912a829 251#define F2FS_GOING_DOWN_METAFLUSH 0x3 /* going down with meta flush */
1abff93d 252
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253#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
254/*
255 * ioctl commands in 32 bit emulation
256 */
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257#define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
258#define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
259#define F2FS_IOC32_GETVERSION FS_IOC32_GETVERSION
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260#endif
261
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262struct f2fs_defragment {
263 u64 start;
264 u64 len;
265};
266
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267/*
268 * For INODE and NODE manager
269 */
7b3cd7d6 270/* for directory operations */
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271struct f2fs_str {
272 unsigned char *name;
273 u32 len;
274};
275
276struct f2fs_filename {
277 const struct qstr *usr_fname;
278 struct f2fs_str disk_name;
279 f2fs_hash_t hash;
280#ifdef CONFIG_F2FS_FS_ENCRYPTION
281 struct f2fs_str crypto_buf;
282#endif
283};
284
285#define FSTR_INIT(n, l) { .name = n, .len = l }
286#define FSTR_TO_QSTR(f) QSTR_INIT((f)->name, (f)->len)
287#define fname_name(p) ((p)->disk_name.name)
288#define fname_len(p) ((p)->disk_name.len)
289
7b3cd7d6 290struct f2fs_dentry_ptr {
d8c6822a 291 struct inode *inode;
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292 const void *bitmap;
293 struct f2fs_dir_entry *dentry;
294 __u8 (*filename)[F2FS_SLOT_LEN];
295 int max;
296};
297
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298static inline void make_dentry_ptr(struct inode *inode,
299 struct f2fs_dentry_ptr *d, void *src, int type)
7b3cd7d6 300{
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301 d->inode = inode;
302
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303 if (type == 1) {
304 struct f2fs_dentry_block *t = (struct f2fs_dentry_block *)src;
305 d->max = NR_DENTRY_IN_BLOCK;
306 d->bitmap = &t->dentry_bitmap;
307 d->dentry = t->dentry;
308 d->filename = t->filename;
309 } else {
310 struct f2fs_inline_dentry *t = (struct f2fs_inline_dentry *)src;
311 d->max = NR_INLINE_DENTRY;
312 d->bitmap = &t->dentry_bitmap;
313 d->dentry = t->dentry;
314 d->filename = t->filename;
315 }
316}
317
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318/*
319 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
320 * as its node offset to distinguish from index node blocks.
321 * But some bits are used to mark the node block.
322 */
323#define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
324 >> OFFSET_BIT_SHIFT)
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325enum {
326 ALLOC_NODE, /* allocate a new node page if needed */
327 LOOKUP_NODE, /* look up a node without readahead */
328 LOOKUP_NODE_RA, /*
329 * look up a node with readahead called
4f4124d0 330 * by get_data_block.
39a53e0c 331 */
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332};
333
a6db67f0 334#define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */
39a53e0c 335
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336#define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
337
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338/* vector size for gang look-up from extent cache that consists of radix tree */
339#define EXT_TREE_VEC_SIZE 64
340
39a53e0c 341/* for in-memory extent cache entry */
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342#define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
343
344/* number of extent info in extent cache we try to shrink */
345#define EXTENT_CACHE_SHRINK_NUMBER 128
c11abd1a 346
39a53e0c 347struct extent_info {
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348 unsigned int fofs; /* start offset in a file */
349 u32 blk; /* start block address of the extent */
350 unsigned int len; /* length of the extent */
351};
352
353struct extent_node {
354 struct rb_node rb_node; /* rb node located in rb-tree */
355 struct list_head list; /* node in global extent list of sbi */
356 struct extent_info ei; /* extent info */
201ef5e0 357 struct extent_tree *et; /* extent tree pointer */
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358};
359
360struct extent_tree {
361 nid_t ino; /* inode number */
362 struct rb_root root; /* root of extent info rb-tree */
62c8af65 363 struct extent_node *cached_en; /* recently accessed extent node */
3e72f721 364 struct extent_info largest; /* largested extent info */
137d09f0 365 struct list_head list; /* to be used by sbi->zombie_list */
13054c54 366 rwlock_t lock; /* protect extent info rb-tree */
68e35385 367 atomic_t node_cnt; /* # of extent node in rb-tree*/
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368};
369
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370/*
371 * This structure is taken from ext4_map_blocks.
372 *
373 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
374 */
375#define F2FS_MAP_NEW (1 << BH_New)
376#define F2FS_MAP_MAPPED (1 << BH_Mapped)
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377#define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten)
378#define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
379 F2FS_MAP_UNWRITTEN)
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380
381struct f2fs_map_blocks {
382 block_t m_pblk;
383 block_t m_lblk;
384 unsigned int m_len;
385 unsigned int m_flags;
386};
387
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388/* for flag in get_data_block */
389#define F2FS_GET_BLOCK_READ 0
390#define F2FS_GET_BLOCK_DIO 1
391#define F2FS_GET_BLOCK_FIEMAP 2
392#define F2FS_GET_BLOCK_BMAP 3
393
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394/*
395 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
396 */
397#define FADVISE_COLD_BIT 0x01
354a3399 398#define FADVISE_LOST_PINO_BIT 0x02
cde4de12 399#define FADVISE_ENCRYPT_BIT 0x04
e7d55452 400#define FADVISE_ENC_NAME_BIT 0x08
39a53e0c 401
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402#define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
403#define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
404#define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
405#define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
406#define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
407#define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
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408#define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
409#define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
410#define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
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411#define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
412#define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
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413
414/* Encryption algorithms */
415#define F2FS_ENCRYPTION_MODE_INVALID 0
416#define F2FS_ENCRYPTION_MODE_AES_256_XTS 1
417#define F2FS_ENCRYPTION_MODE_AES_256_GCM 2
418#define F2FS_ENCRYPTION_MODE_AES_256_CBC 3
419#define F2FS_ENCRYPTION_MODE_AES_256_CTS 4
b5492af7 420
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421#include "f2fs_crypto.h"
422
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423#define DEF_DIR_LEVEL 0
424
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425struct f2fs_inode_info {
426 struct inode vfs_inode; /* serve a vfs inode */
427 unsigned long i_flags; /* keep an inode flags for ioctl */
428 unsigned char i_advise; /* use to give file attribute hints */
38431545 429 unsigned char i_dir_level; /* use for dentry level for large dir */
39a53e0c 430 unsigned int i_current_depth; /* use only in directory structure */
6666e6aa 431 unsigned int i_pino; /* parent inode number */
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432 umode_t i_acl_mode; /* keep file acl mode temporarily */
433
434 /* Use below internally in f2fs*/
435 unsigned long flags; /* use to pass per-file flags */
d928bfbf 436 struct rw_semaphore i_sem; /* protect fi info */
a7ffdbe2 437 atomic_t dirty_pages; /* # of dirty pages */
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438 f2fs_hash_t chash; /* hash value of given file name */
439 unsigned int clevel; /* maximum level of given file name */
440 nid_t i_xattr_nid; /* node id that contains xattrs */
e518ff81 441 unsigned long long xattr_ver; /* cp version of xattr modification */
88b88a66 442
2710fd7e 443 struct list_head dirty_list; /* linked in global dirty list */
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444 struct list_head inmem_pages; /* inmemory pages managed by f2fs */
445 struct mutex inmem_lock; /* lock for inmemory pages */
cde4de12 446
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447 struct extent_tree *extent_tree; /* cached extent_tree entry */
448
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449#ifdef CONFIG_F2FS_FS_ENCRYPTION
450 /* Encryption params */
451 struct f2fs_crypt_info *i_crypt_info;
452#endif
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453};
454
455static inline void get_extent_info(struct extent_info *ext,
456 struct f2fs_extent i_ext)
457{
39a53e0c 458 ext->fofs = le32_to_cpu(i_ext.fofs);
4d0b0bd4 459 ext->blk = le32_to_cpu(i_ext.blk);
39a53e0c 460 ext->len = le32_to_cpu(i_ext.len);
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461}
462
463static inline void set_raw_extent(struct extent_info *ext,
464 struct f2fs_extent *i_ext)
465{
39a53e0c 466 i_ext->fofs = cpu_to_le32(ext->fofs);
4d0b0bd4 467 i_ext->blk = cpu_to_le32(ext->blk);
39a53e0c 468 i_ext->len = cpu_to_le32(ext->len);
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469}
470
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471static inline void set_extent_info(struct extent_info *ei, unsigned int fofs,
472 u32 blk, unsigned int len)
473{
474 ei->fofs = fofs;
475 ei->blk = blk;
476 ei->len = len;
477}
478
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479static inline bool __is_extent_same(struct extent_info *ei1,
480 struct extent_info *ei2)
481{
482 return (ei1->fofs == ei2->fofs && ei1->blk == ei2->blk &&
483 ei1->len == ei2->len);
484}
485
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486static inline bool __is_extent_mergeable(struct extent_info *back,
487 struct extent_info *front)
488{
489 return (back->fofs + back->len == front->fofs &&
490 back->blk + back->len == front->blk);
491}
492
493static inline bool __is_back_mergeable(struct extent_info *cur,
494 struct extent_info *back)
495{
496 return __is_extent_mergeable(back, cur);
497}
498
499static inline bool __is_front_mergeable(struct extent_info *cur,
500 struct extent_info *front)
501{
502 return __is_extent_mergeable(cur, front);
503}
504
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505static inline void __try_update_largest_extent(struct extent_tree *et,
506 struct extent_node *en)
507{
508 if (en->ei.len > et->largest.len)
509 et->largest = en->ei;
510}
511
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512struct f2fs_nm_info {
513 block_t nat_blkaddr; /* base disk address of NAT */
514 nid_t max_nid; /* maximum possible node ids */
7ee0eeab 515 nid_t available_nids; /* maximum available node ids */
39a53e0c 516 nid_t next_scan_nid; /* the next nid to be scanned */
cdfc41c1 517 unsigned int ram_thresh; /* control the memory footprint */
ea1a29a0 518 unsigned int ra_nid_pages; /* # of nid pages to be readaheaded */
2304cb0c 519 unsigned int dirty_nats_ratio; /* control dirty nats ratio threshold */
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520
521 /* NAT cache management */
522 struct radix_tree_root nat_root;/* root of the nat entry cache */
309cc2b6 523 struct radix_tree_root nat_set_root;/* root of the nat set cache */
8b26ef98 524 struct rw_semaphore nat_tree_lock; /* protect nat_tree_lock */
39a53e0c 525 struct list_head nat_entries; /* cached nat entry list (clean) */
309cc2b6 526 unsigned int nat_cnt; /* the # of cached nat entries */
aec71382 527 unsigned int dirty_nat_cnt; /* total num of nat entries in set */
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528
529 /* free node ids management */
8a7ed66a 530 struct radix_tree_root free_nid_root;/* root of the free_nid cache */
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531 struct list_head free_nid_list; /* a list for free nids */
532 spinlock_t free_nid_list_lock; /* protect free nid list */
533 unsigned int fcnt; /* the number of free node id */
534 struct mutex build_lock; /* lock for build free nids */
535
536 /* for checkpoint */
537 char *nat_bitmap; /* NAT bitmap pointer */
538 int bitmap_size; /* bitmap size */
539};
540
541/*
542 * this structure is used as one of function parameters.
543 * all the information are dedicated to a given direct node block determined
544 * by the data offset in a file.
545 */
546struct dnode_of_data {
547 struct inode *inode; /* vfs inode pointer */
548 struct page *inode_page; /* its inode page, NULL is possible */
549 struct page *node_page; /* cached direct node page */
550 nid_t nid; /* node id of the direct node block */
551 unsigned int ofs_in_node; /* data offset in the node page */
552 bool inode_page_locked; /* inode page is locked or not */
93bae099 553 bool node_changed; /* is node block changed */
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554 char cur_level; /* level of hole node page */
555 char max_level; /* level of current page located */
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556 block_t data_blkaddr; /* block address of the node block */
557};
558
559static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
560 struct page *ipage, struct page *npage, nid_t nid)
561{
d66d1f76 562 memset(dn, 0, sizeof(*dn));
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563 dn->inode = inode;
564 dn->inode_page = ipage;
565 dn->node_page = npage;
566 dn->nid = nid;
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567}
568
569/*
570 * For SIT manager
571 *
572 * By default, there are 6 active log areas across the whole main area.
573 * When considering hot and cold data separation to reduce cleaning overhead,
574 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
575 * respectively.
576 * In the current design, you should not change the numbers intentionally.
577 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
578 * logs individually according to the underlying devices. (default: 6)
579 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
580 * data and 8 for node logs.
581 */
582#define NR_CURSEG_DATA_TYPE (3)
583#define NR_CURSEG_NODE_TYPE (3)
584#define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
585
586enum {
587 CURSEG_HOT_DATA = 0, /* directory entry blocks */
588 CURSEG_WARM_DATA, /* data blocks */
589 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
590 CURSEG_HOT_NODE, /* direct node blocks of directory files */
591 CURSEG_WARM_NODE, /* direct node blocks of normal files */
592 CURSEG_COLD_NODE, /* indirect node blocks */
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593 NO_CHECK_TYPE,
594 CURSEG_DIRECT_IO, /* to use for the direct IO path */
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595};
596
6b4afdd7 597struct flush_cmd {
6b4afdd7 598 struct completion wait;
721bd4d5 599 struct llist_node llnode;
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600 int ret;
601};
602
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603struct flush_cmd_control {
604 struct task_struct *f2fs_issue_flush; /* flush thread */
605 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
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606 struct llist_head issue_list; /* list for command issue */
607 struct llist_node *dispatch_list; /* list for command dispatch */
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608};
609
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610struct f2fs_sm_info {
611 struct sit_info *sit_info; /* whole segment information */
612 struct free_segmap_info *free_info; /* free segment information */
613 struct dirty_seglist_info *dirty_info; /* dirty segment information */
614 struct curseg_info *curseg_array; /* active segment information */
615
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616 block_t seg0_blkaddr; /* block address of 0'th segment */
617 block_t main_blkaddr; /* start block address of main area */
618 block_t ssa_blkaddr; /* start block address of SSA area */
619
620 unsigned int segment_count; /* total # of segments */
621 unsigned int main_segments; /* # of segments in main area */
622 unsigned int reserved_segments; /* # of reserved segments */
623 unsigned int ovp_segments; /* # of overprovision segments */
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624
625 /* a threshold to reclaim prefree segments */
626 unsigned int rec_prefree_segments;
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627
628 /* for small discard management */
629 struct list_head discard_list; /* 4KB discard list */
630 int nr_discards; /* # of discards in the list */
631 int max_discards; /* max. discards to be issued */
216fbd64 632
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633 /* for batched trimming */
634 unsigned int trim_sections; /* # of sections to trim */
635
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636 struct list_head sit_entry_set; /* sit entry set list */
637
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638 unsigned int ipu_policy; /* in-place-update policy */
639 unsigned int min_ipu_util; /* in-place-update threshold */
c1ce1b02 640 unsigned int min_fsync_blocks; /* threshold for fsync */
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641
642 /* for flush command control */
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643 struct flush_cmd_control *cmd_control_info;
644
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645};
646
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647/*
648 * For superblock
649 */
650/*
651 * COUNT_TYPE for monitoring
652 *
653 * f2fs monitors the number of several block types such as on-writeback,
654 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
655 */
656enum count_type {
657 F2FS_WRITEBACK,
658 F2FS_DIRTY_DENTS,
c227f912 659 F2FS_DIRTY_DATA,
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660 F2FS_DIRTY_NODES,
661 F2FS_DIRTY_META,
8dcf2ff7 662 F2FS_INMEM_PAGES,
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663 NR_COUNT_TYPE,
664};
665
39a53e0c 666/*
e1c42045 667 * The below are the page types of bios used in submit_bio().
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668 * The available types are:
669 * DATA User data pages. It operates as async mode.
670 * NODE Node pages. It operates as async mode.
671 * META FS metadata pages such as SIT, NAT, CP.
672 * NR_PAGE_TYPE The number of page types.
673 * META_FLUSH Make sure the previous pages are written
674 * with waiting the bio's completion
675 * ... Only can be used with META.
676 */
7d5e5109 677#define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
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678enum page_type {
679 DATA,
680 NODE,
681 META,
682 NR_PAGE_TYPE,
683 META_FLUSH,
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684 INMEM, /* the below types are used by tracepoints only. */
685 INMEM_DROP,
686 IPU,
687 OPU,
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688};
689
458e6197 690struct f2fs_io_info {
05ca3632 691 struct f2fs_sb_info *sbi; /* f2fs_sb_info pointer */
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692 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
693 int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
cf04e8eb 694 block_t blk_addr; /* block address to be written */
05ca3632 695 struct page *page; /* page to be written */
4375a336 696 struct page *encrypted_page; /* encrypted page */
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697};
698
93dfe2ac 699#define is_read_io(rw) (((rw) & 1) == READ)
1ff7bd3b 700struct f2fs_bio_info {
458e6197 701 struct f2fs_sb_info *sbi; /* f2fs superblock */
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702 struct bio *bio; /* bios to merge */
703 sector_t last_block_in_bio; /* last block number */
458e6197 704 struct f2fs_io_info fio; /* store buffered io info. */
df0f8dc0 705 struct rw_semaphore io_rwsem; /* blocking op for bio */
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706};
707
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708enum inode_type {
709 DIR_INODE, /* for dirty dir inode */
710 FILE_INODE, /* for dirty regular/symlink inode */
711 NR_INODE_TYPE,
712};
713
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714/* for inner inode cache management */
715struct inode_management {
716 struct radix_tree_root ino_root; /* ino entry array */
717 spinlock_t ino_lock; /* for ino entry lock */
718 struct list_head ino_list; /* inode list head */
719 unsigned long ino_num; /* number of entries */
720};
721
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722/* For s_flag in struct f2fs_sb_info */
723enum {
724 SBI_IS_DIRTY, /* dirty flag for checkpoint */
725 SBI_IS_CLOSE, /* specify unmounting */
726 SBI_NEED_FSCK, /* need fsck.f2fs to fix */
727 SBI_POR_DOING, /* recovery is doing or not */
728};
729
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730enum {
731 CP_TIME,
d0239e1b 732 REQ_TIME,
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733 MAX_TIME,
734};
735
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736struct f2fs_sb_info {
737 struct super_block *sb; /* pointer to VFS super block */
5e176d54 738 struct proc_dir_entry *s_proc; /* proc entry */
39a53e0c 739 struct f2fs_super_block *raw_super; /* raw super block pointer */
e8240f65 740 int valid_super_block; /* valid super block no */
caf0047e 741 int s_flag; /* flags for sbi */
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742
743 /* for node-related operations */
744 struct f2fs_nm_info *nm_info; /* node manager */
745 struct inode *node_inode; /* cache node blocks */
746
747 /* for segment-related operations */
748 struct f2fs_sm_info *sm_info; /* segment manager */
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749
750 /* for bio operations */
924b720b 751 struct f2fs_bio_info read_io; /* for read bios */
1ff7bd3b 752 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */
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753
754 /* for checkpoint */
755 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
756 struct inode *meta_inode; /* cache meta blocks */
39936837 757 struct mutex cp_mutex; /* checkpoint procedure lock */
e479556b 758 struct rw_semaphore cp_rwsem; /* blocking FS operations */
b3582c68 759 struct rw_semaphore node_write; /* locking node writes */
5463e7c1 760 struct mutex writepages; /* mutex for writepages() */
fb51b5ef 761 wait_queue_head_t cp_wait;
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762 unsigned long last_time[MAX_TIME]; /* to store time in jiffies */
763 long interval_time[MAX_TIME]; /* to store thresholds */
39a53e0c 764
67298804 765 struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */
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766
767 /* for orphan inode, use 0'th array */
0d47c1ad 768 unsigned int max_orphans; /* max orphan inodes */
39a53e0c 769
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770 /* for inode management */
771 struct list_head inode_list[NR_INODE_TYPE]; /* dirty inode list */
772 spinlock_t inode_lock[NR_INODE_TYPE]; /* for dirty inode list lock */
39a53e0c 773
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774 /* for extent tree cache */
775 struct radix_tree_root extent_tree_root;/* cache extent cache entries */
776 struct rw_semaphore extent_tree_lock; /* locking extent radix tree */
777 struct list_head extent_list; /* lru list for shrinker */
778 spinlock_t extent_lock; /* locking extent lru list */
7441ccef 779 atomic_t total_ext_tree; /* extent tree count */
137d09f0 780 struct list_head zombie_list; /* extent zombie tree list */
74fd8d99 781 atomic_t total_zombie_tree; /* extent zombie tree count */
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782 atomic_t total_ext_node; /* extent info count */
783
e1c42045 784 /* basic filesystem units */
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785 unsigned int log_sectors_per_block; /* log2 sectors per block */
786 unsigned int log_blocksize; /* log2 block size */
787 unsigned int blocksize; /* block size */
788 unsigned int root_ino_num; /* root inode number*/
789 unsigned int node_ino_num; /* node inode number*/
790 unsigned int meta_ino_num; /* meta inode number*/
791 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
792 unsigned int blocks_per_seg; /* blocks per segment */
793 unsigned int segs_per_sec; /* segments per section */
794 unsigned int secs_per_zone; /* sections per zone */
795 unsigned int total_sections; /* total section count */
796 unsigned int total_node_count; /* total node block count */
797 unsigned int total_valid_node_count; /* valid node block count */
798 unsigned int total_valid_inode_count; /* valid inode count */
e0afc4d6 799 loff_t max_file_blocks; /* max block index of file */
39a53e0c 800 int active_logs; /* # of active logs */
ab9fa662 801 int dir_level; /* directory level */
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802
803 block_t user_block_count; /* # of user blocks */
804 block_t total_valid_block_count; /* # of valid blocks */
805 block_t alloc_valid_block_count; /* # of allocated blocks */
a66cdd98 806 block_t discard_blks; /* discard command candidats */
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807 block_t last_valid_block_count; /* for recovery */
808 u32 s_next_generation; /* for NFS support */
809 atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */
810
811 struct f2fs_mount_info mount_opt; /* mount options */
812
813 /* for cleaning operations */
814 struct mutex gc_mutex; /* mutex for GC */
815 struct f2fs_gc_kthread *gc_thread; /* GC thread */
5ec4e49f 816 unsigned int cur_victim_sec; /* current victim section num */
39a53e0c 817
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818 /* maximum # of trials to find a victim segment for SSR and GC */
819 unsigned int max_victim_search;
820
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821 /*
822 * for stat information.
823 * one is for the LFS mode, and the other is for the SSR mode.
824 */
35b09d82 825#ifdef CONFIG_F2FS_STAT_FS
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826 struct f2fs_stat_info *stat_info; /* FS status information */
827 unsigned int segment_count[2]; /* # of allocated segments */
828 unsigned int block_count[2]; /* # of allocated blocks */
b9a2c252 829 atomic_t inplace_count; /* # of inplace update */
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830 atomic64_t total_hit_ext; /* # of lookup extent cache */
831 atomic64_t read_hit_rbtree; /* # of hit rbtree extent node */
832 atomic64_t read_hit_largest; /* # of hit largest extent node */
833 atomic64_t read_hit_cached; /* # of hit cached extent node */
d5e8f6c9 834 atomic_t inline_xattr; /* # of inline_xattr inodes */
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835 atomic_t inline_inode; /* # of inline_data inodes */
836 atomic_t inline_dir; /* # of inline_dentry inodes */
39a53e0c 837 int bg_gc; /* background gc calls */
33fbd510 838 unsigned int ndirty_inode[NR_INODE_TYPE]; /* # of dirty inodes */
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839#endif
840 unsigned int last_victim[2]; /* last victim segment # */
39a53e0c 841 spinlock_t stat_lock; /* lock for stat operations */
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842
843 /* For sysfs suppport */
844 struct kobject s_kobj;
845 struct completion s_kobj_unregister;
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846
847 /* For shrinker support */
848 struct list_head s_list;
849 struct mutex umount_mutex;
850 unsigned int shrinker_run_no;
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851
852 /* For write statistics */
853 u64 sectors_written_start;
854 u64 kbytes_written;
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855};
856
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857/* For write statistics. Suppose sector size is 512 bytes,
858 * and the return value is in kbytes. s is of struct f2fs_sb_info.
859 */
860#define BD_PART_WRITTEN(s) \
861(((u64)part_stat_read(s->sb->s_bdev->bd_part, sectors[1]) - \
862 s->sectors_written_start) >> 1)
863
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864static inline void f2fs_update_time(struct f2fs_sb_info *sbi, int type)
865{
866 sbi->last_time[type] = jiffies;
867}
868
869static inline bool f2fs_time_over(struct f2fs_sb_info *sbi, int type)
870{
871 struct timespec ts = {sbi->interval_time[type], 0};
872 unsigned long interval = timespec_to_jiffies(&ts);
873
874 return time_after(jiffies, sbi->last_time[type] + interval);
875}
876
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877static inline bool is_idle(struct f2fs_sb_info *sbi)
878{
879 struct block_device *bdev = sbi->sb->s_bdev;
880 struct request_queue *q = bdev_get_queue(bdev);
881 struct request_list *rl = &q->root_rl;
882
883 if (rl->count[BLK_RW_SYNC] || rl->count[BLK_RW_ASYNC])
884 return 0;
885
886 return f2fs_time_over(sbi, REQ_TIME);
887}
888
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889/*
890 * Inline functions
891 */
892static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
893{
894 return container_of(inode, struct f2fs_inode_info, vfs_inode);
895}
896
897static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
898{
899 return sb->s_fs_info;
900}
901
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902static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
903{
904 return F2FS_SB(inode->i_sb);
905}
906
907static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
908{
909 return F2FS_I_SB(mapping->host);
910}
911
912static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
913{
914 return F2FS_M_SB(page->mapping);
915}
916
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917static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
918{
919 return (struct f2fs_super_block *)(sbi->raw_super);
920}
921
922static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
923{
924 return (struct f2fs_checkpoint *)(sbi->ckpt);
925}
926
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927static inline struct f2fs_node *F2FS_NODE(struct page *page)
928{
929 return (struct f2fs_node *)page_address(page);
930}
931
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932static inline struct f2fs_inode *F2FS_INODE(struct page *page)
933{
934 return &((struct f2fs_node *)page_address(page))->i;
935}
936
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937static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
938{
939 return (struct f2fs_nm_info *)(sbi->nm_info);
940}
941
942static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
943{
944 return (struct f2fs_sm_info *)(sbi->sm_info);
945}
946
947static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
948{
949 return (struct sit_info *)(SM_I(sbi)->sit_info);
950}
951
952static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
953{
954 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
955}
956
957static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
958{
959 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
960}
961
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962static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
963{
964 return sbi->meta_inode->i_mapping;
965}
966
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967static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
968{
969 return sbi->node_inode->i_mapping;
970}
971
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972static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
973{
974 return sbi->s_flag & (0x01 << type);
975}
976
977static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
39a53e0c 978{
caf0047e 979 sbi->s_flag |= (0x01 << type);
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980}
981
caf0047e 982static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
39a53e0c 983{
caf0047e 984 sbi->s_flag &= ~(0x01 << type);
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985}
986
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987static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
988{
989 return le64_to_cpu(cp->checkpoint_ver);
990}
991
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992static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
993{
994 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
995 return ckpt_flags & f;
996}
997
998static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
999{
1000 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1001 ckpt_flags |= f;
1002 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1003}
1004
1005static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1006{
1007 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1008 ckpt_flags &= (~f);
1009 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1010}
1011
e479556b 1012static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
39936837 1013{
e479556b 1014 down_read(&sbi->cp_rwsem);
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1015}
1016
e479556b 1017static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
39a53e0c 1018{
e479556b 1019 up_read(&sbi->cp_rwsem);
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1020}
1021
e479556b 1022static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
39a53e0c 1023{
0daaad97 1024 f2fs_down_write(&sbi->cp_rwsem, &sbi->cp_mutex);
39936837
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1025}
1026
e479556b 1027static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
39936837 1028{
e479556b 1029 up_write(&sbi->cp_rwsem);
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JK
1030}
1031
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1032static inline int __get_cp_reason(struct f2fs_sb_info *sbi)
1033{
1034 int reason = CP_SYNC;
1035
1036 if (test_opt(sbi, FASTBOOT))
1037 reason = CP_FASTBOOT;
1038 if (is_sbi_flag_set(sbi, SBI_IS_CLOSE))
1039 reason = CP_UMOUNT;
1040 return reason;
1041}
1042
1043static inline bool __remain_node_summaries(int reason)
1044{
1045 return (reason == CP_UMOUNT || reason == CP_FASTBOOT);
1046}
1047
1048static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
1049{
1050 return (is_set_ckpt_flags(F2FS_CKPT(sbi), CP_UMOUNT_FLAG) ||
1051 is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FASTBOOT_FLAG));
1052}
1053
39a53e0c
JK
1054/*
1055 * Check whether the given nid is within node id range.
1056 */
064e0823 1057static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
39a53e0c 1058{
d6b7d4b3
CY
1059 if (unlikely(nid < F2FS_ROOT_INO(sbi)))
1060 return -EINVAL;
cfb271d4 1061 if (unlikely(nid >= NM_I(sbi)->max_nid))
064e0823
NJ
1062 return -EINVAL;
1063 return 0;
39a53e0c
JK
1064}
1065
1066#define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
1067
1068/*
1069 * Check whether the inode has blocks or not
1070 */
1071static inline int F2FS_HAS_BLOCKS(struct inode *inode)
1072{
1073 if (F2FS_I(inode)->i_xattr_nid)
6c311ec6 1074 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1;
39a53e0c 1075 else
6c311ec6 1076 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS;
39a53e0c
JK
1077}
1078
4bc8e9bc
CY
1079static inline bool f2fs_has_xattr_block(unsigned int ofs)
1080{
1081 return ofs == XATTR_NODE_OFFSET;
1082}
1083
39a53e0c
JK
1084static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
1085 struct inode *inode, blkcnt_t count)
1086{
1087 block_t valid_block_count;
1088
1089 spin_lock(&sbi->stat_lock);
1090 valid_block_count =
1091 sbi->total_valid_block_count + (block_t)count;
cfb271d4 1092 if (unlikely(valid_block_count > sbi->user_block_count)) {
39a53e0c
JK
1093 spin_unlock(&sbi->stat_lock);
1094 return false;
1095 }
1096 inode->i_blocks += count;
1097 sbi->total_valid_block_count = valid_block_count;
1098 sbi->alloc_valid_block_count += (block_t)count;
1099 spin_unlock(&sbi->stat_lock);
1100 return true;
1101}
1102
da19b0dc 1103static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
39a53e0c
JK
1104 struct inode *inode,
1105 blkcnt_t count)
1106{
1107 spin_lock(&sbi->stat_lock);
9850cf4a
JK
1108 f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
1109 f2fs_bug_on(sbi, inode->i_blocks < count);
39a53e0c
JK
1110 inode->i_blocks -= count;
1111 sbi->total_valid_block_count -= (block_t)count;
1112 spin_unlock(&sbi->stat_lock);
39a53e0c
JK
1113}
1114
1115static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
1116{
1117 atomic_inc(&sbi->nr_pages[count_type]);
caf0047e 1118 set_sbi_flag(sbi, SBI_IS_DIRTY);
39a53e0c
JK
1119}
1120
a7ffdbe2 1121static inline void inode_inc_dirty_pages(struct inode *inode)
39a53e0c 1122{
a7ffdbe2 1123 atomic_inc(&F2FS_I(inode)->dirty_pages);
c227f912
CY
1124 inc_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
1125 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
39a53e0c
JK
1126}
1127
1128static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
1129{
1130 atomic_dec(&sbi->nr_pages[count_type]);
1131}
1132
a7ffdbe2 1133static inline void inode_dec_dirty_pages(struct inode *inode)
39a53e0c 1134{
5ac9f36f
CY
1135 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
1136 !S_ISLNK(inode->i_mode))
1fe54f9d
JK
1137 return;
1138
a7ffdbe2 1139 atomic_dec(&F2FS_I(inode)->dirty_pages);
c227f912
CY
1140 dec_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
1141 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
39a53e0c
JK
1142}
1143
1144static inline int get_pages(struct f2fs_sb_info *sbi, int count_type)
1145{
1146 return atomic_read(&sbi->nr_pages[count_type]);
1147}
1148
a7ffdbe2 1149static inline int get_dirty_pages(struct inode *inode)
f8b2c1f9 1150{
a7ffdbe2 1151 return atomic_read(&F2FS_I(inode)->dirty_pages);
f8b2c1f9
JK
1152}
1153
5ac206cf
NJ
1154static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
1155{
3519e3f9 1156 unsigned int pages_per_sec = sbi->segs_per_sec * sbi->blocks_per_seg;
5ac206cf
NJ
1157 return ((get_pages(sbi, block_type) + pages_per_sec - 1)
1158 >> sbi->log_blocks_per_seg) / sbi->segs_per_sec;
1159}
1160
39a53e0c
JK
1161static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
1162{
8b8343fa 1163 return sbi->total_valid_block_count;
39a53e0c
JK
1164}
1165
1166static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
1167{
1168 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1169
1170 /* return NAT or SIT bitmap */
1171 if (flag == NAT_BITMAP)
1172 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
1173 else if (flag == SIT_BITMAP)
1174 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
1175
1176 return 0;
1177}
1178
55141486
WL
1179static inline block_t __cp_payload(struct f2fs_sb_info *sbi)
1180{
1181 return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
1182}
1183
39a53e0c
JK
1184static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
1185{
1186 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1dbe4152
CL
1187 int offset;
1188
55141486 1189 if (__cp_payload(sbi) > 0) {
1dbe4152
CL
1190 if (flag == NAT_BITMAP)
1191 return &ckpt->sit_nat_version_bitmap;
1192 else
65b85ccc 1193 return (unsigned char *)ckpt + F2FS_BLKSIZE;
1dbe4152
CL
1194 } else {
1195 offset = (flag == NAT_BITMAP) ?
25ca923b 1196 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
1dbe4152
CL
1197 return &ckpt->sit_nat_version_bitmap + offset;
1198 }
39a53e0c
JK
1199}
1200
1201static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
1202{
1203 block_t start_addr;
1204 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
d71b5564 1205 unsigned long long ckpt_version = cur_cp_version(ckpt);
39a53e0c 1206
25ca923b 1207 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
39a53e0c
JK
1208
1209 /*
1210 * odd numbered checkpoint should at cp segment 0
e1c42045 1211 * and even segment must be at cp segment 1
39a53e0c
JK
1212 */
1213 if (!(ckpt_version & 1))
1214 start_addr += sbi->blocks_per_seg;
1215
1216 return start_addr;
1217}
1218
1219static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
1220{
1221 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
1222}
1223
1224static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
ef86d709 1225 struct inode *inode)
39a53e0c
JK
1226{
1227 block_t valid_block_count;
1228 unsigned int valid_node_count;
1229
1230 spin_lock(&sbi->stat_lock);
1231
ef86d709 1232 valid_block_count = sbi->total_valid_block_count + 1;
cfb271d4 1233 if (unlikely(valid_block_count > sbi->user_block_count)) {
39a53e0c
JK
1234 spin_unlock(&sbi->stat_lock);
1235 return false;
1236 }
1237
ef86d709 1238 valid_node_count = sbi->total_valid_node_count + 1;
cfb271d4 1239 if (unlikely(valid_node_count > sbi->total_node_count)) {
39a53e0c
JK
1240 spin_unlock(&sbi->stat_lock);
1241 return false;
1242 }
1243
1244 if (inode)
ef86d709
GZ
1245 inode->i_blocks++;
1246
1247 sbi->alloc_valid_block_count++;
1248 sbi->total_valid_node_count++;
1249 sbi->total_valid_block_count++;
39a53e0c
JK
1250 spin_unlock(&sbi->stat_lock);
1251
1252 return true;
1253}
1254
1255static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
ef86d709 1256 struct inode *inode)
39a53e0c
JK
1257{
1258 spin_lock(&sbi->stat_lock);
1259
9850cf4a
JK
1260 f2fs_bug_on(sbi, !sbi->total_valid_block_count);
1261 f2fs_bug_on(sbi, !sbi->total_valid_node_count);
1262 f2fs_bug_on(sbi, !inode->i_blocks);
39a53e0c 1263
ef86d709
GZ
1264 inode->i_blocks--;
1265 sbi->total_valid_node_count--;
1266 sbi->total_valid_block_count--;
39a53e0c
JK
1267
1268 spin_unlock(&sbi->stat_lock);
1269}
1270
1271static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
1272{
8b8343fa 1273 return sbi->total_valid_node_count;
39a53e0c
JK
1274}
1275
1276static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
1277{
1278 spin_lock(&sbi->stat_lock);
9850cf4a 1279 f2fs_bug_on(sbi, sbi->total_valid_inode_count == sbi->total_node_count);
39a53e0c
JK
1280 sbi->total_valid_inode_count++;
1281 spin_unlock(&sbi->stat_lock);
1282}
1283
0e80220a 1284static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
39a53e0c
JK
1285{
1286 spin_lock(&sbi->stat_lock);
9850cf4a 1287 f2fs_bug_on(sbi, !sbi->total_valid_inode_count);
39a53e0c
JK
1288 sbi->total_valid_inode_count--;
1289 spin_unlock(&sbi->stat_lock);
39a53e0c
JK
1290}
1291
1292static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi)
1293{
8b8343fa 1294 return sbi->total_valid_inode_count;
39a53e0c
JK
1295}
1296
a56c7c6f
JK
1297static inline struct page *f2fs_grab_cache_page(struct address_space *mapping,
1298 pgoff_t index, bool for_write)
1299{
1300 if (!for_write)
1301 return grab_cache_page(mapping, index);
1302 return grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS);
1303}
1304
6e2c64ad
JK
1305static inline void f2fs_copy_page(struct page *src, struct page *dst)
1306{
1307 char *src_kaddr = kmap(src);
1308 char *dst_kaddr = kmap(dst);
1309
1310 memcpy(dst_kaddr, src_kaddr, PAGE_SIZE);
1311 kunmap(dst);
1312 kunmap(src);
1313}
1314
39a53e0c
JK
1315static inline void f2fs_put_page(struct page *page, int unlock)
1316{
031fa8cc 1317 if (!page)
39a53e0c
JK
1318 return;
1319
1320 if (unlock) {
9850cf4a 1321 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
39a53e0c
JK
1322 unlock_page(page);
1323 }
1324 page_cache_release(page);
1325}
1326
1327static inline void f2fs_put_dnode(struct dnode_of_data *dn)
1328{
1329 if (dn->node_page)
1330 f2fs_put_page(dn->node_page, 1);
1331 if (dn->inode_page && dn->node_page != dn->inode_page)
1332 f2fs_put_page(dn->inode_page, 0);
1333 dn->node_page = NULL;
1334 dn->inode_page = NULL;
1335}
1336
1337static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
e8512d2e 1338 size_t size)
39a53e0c 1339{
e8512d2e 1340 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
39a53e0c
JK
1341}
1342
7bd59381
GZ
1343static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
1344 gfp_t flags)
1345{
1346 void *entry;
7bd59381 1347
80c54505
JK
1348 entry = kmem_cache_alloc(cachep, flags);
1349 if (!entry)
1350 entry = kmem_cache_alloc(cachep, flags | __GFP_NOFAIL);
7bd59381
GZ
1351 return entry;
1352}
1353
740432f8
JK
1354static inline struct bio *f2fs_bio_alloc(int npages)
1355{
1356 struct bio *bio;
1357
1358 /* No failure on bio allocation */
740432f8 1359 bio = bio_alloc(GFP_NOIO, npages);
80c54505
JK
1360 if (!bio)
1361 bio = bio_alloc(GFP_NOIO | __GFP_NOFAIL, npages);
740432f8
JK
1362 return bio;
1363}
1364
9be32d72
JK
1365static inline void f2fs_radix_tree_insert(struct radix_tree_root *root,
1366 unsigned long index, void *item)
1367{
1368 while (radix_tree_insert(root, index, item))
1369 cond_resched();
1370}
1371
39a53e0c
JK
1372#define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1373
1374static inline bool IS_INODE(struct page *page)
1375{
45590710 1376 struct f2fs_node *p = F2FS_NODE(page);
39a53e0c
JK
1377 return RAW_IS_INODE(p);
1378}
1379
1380static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
1381{
1382 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
1383}
1384
1385static inline block_t datablock_addr(struct page *node_page,
1386 unsigned int offset)
1387{
1388 struct f2fs_node *raw_node;
1389 __le32 *addr_array;
45590710 1390 raw_node = F2FS_NODE(node_page);
39a53e0c
JK
1391 addr_array = blkaddr_in_node(raw_node);
1392 return le32_to_cpu(addr_array[offset]);
1393}
1394
1395static inline int f2fs_test_bit(unsigned int nr, char *addr)
1396{
1397 int mask;
1398
1399 addr += (nr >> 3);
1400 mask = 1 << (7 - (nr & 0x07));
1401 return mask & *addr;
1402}
1403
a66cdd98
JK
1404static inline void f2fs_set_bit(unsigned int nr, char *addr)
1405{
1406 int mask;
1407
1408 addr += (nr >> 3);
1409 mask = 1 << (7 - (nr & 0x07));
1410 *addr |= mask;
1411}
1412
1413static inline void f2fs_clear_bit(unsigned int nr, char *addr)
1414{
1415 int mask;
1416
1417 addr += (nr >> 3);
1418 mask = 1 << (7 - (nr & 0x07));
1419 *addr &= ~mask;
1420}
1421
52aca074 1422static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
39a53e0c
JK
1423{
1424 int mask;
1425 int ret;
1426
1427 addr += (nr >> 3);
1428 mask = 1 << (7 - (nr & 0x07));
1429 ret = mask & *addr;
1430 *addr |= mask;
1431 return ret;
1432}
1433
52aca074 1434static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
39a53e0c
JK
1435{
1436 int mask;
1437 int ret;
1438
1439 addr += (nr >> 3);
1440 mask = 1 << (7 - (nr & 0x07));
1441 ret = mask & *addr;
1442 *addr &= ~mask;
1443 return ret;
1444}
1445
c6ac4c0e
GZ
1446static inline void f2fs_change_bit(unsigned int nr, char *addr)
1447{
1448 int mask;
1449
1450 addr += (nr >> 3);
1451 mask = 1 << (7 - (nr & 0x07));
1452 *addr ^= mask;
1453}
1454
39a53e0c
JK
1455/* used for f2fs_inode_info->flags */
1456enum {
1457 FI_NEW_INODE, /* indicate newly allocated inode */
b3783873 1458 FI_DIRTY_INODE, /* indicate inode is dirty or not */
ed57c27f 1459 FI_DIRTY_DIR, /* indicate directory has dirty pages */
39a53e0c
JK
1460 FI_INC_LINK, /* need to increment i_nlink */
1461 FI_ACL_MODE, /* indicate acl mode */
1462 FI_NO_ALLOC, /* should not allocate any blocks */
c9b63bd0 1463 FI_FREE_NID, /* free allocated nide */
699489bb 1464 FI_UPDATE_DIR, /* should update inode block for consistency */
74d0b917 1465 FI_DELAY_IPUT, /* used for the recovery */
c11abd1a 1466 FI_NO_EXTENT, /* not to use the extent cache */
444c580f 1467 FI_INLINE_XATTR, /* used for inline xattr */
1001b347 1468 FI_INLINE_DATA, /* used for inline data*/
34d67deb 1469 FI_INLINE_DENTRY, /* used for inline dentry */
fff04f90
JK
1470 FI_APPEND_WRITE, /* inode has appended data */
1471 FI_UPDATE_WRITE, /* inode has in-place-update data */
88b88a66
JK
1472 FI_NEED_IPU, /* used for ipu per file */
1473 FI_ATOMIC_FILE, /* indicate atomic file */
02a1335f 1474 FI_VOLATILE_FILE, /* indicate volatile file */
3c6c2beb 1475 FI_FIRST_BLOCK_WRITTEN, /* indicate #0 data block was written */
1e84371f 1476 FI_DROP_CACHE, /* drop dirty page cache */
b3d208f9 1477 FI_DATA_EXIST, /* indicate data exists */
510022a8 1478 FI_INLINE_DOTS, /* indicate inline dot dentries */
d323d005 1479 FI_DO_DEFRAG, /* indicate defragment is running */
c227f912 1480 FI_DIRTY_FILE, /* indicate regular/symlink has dirty pages */
39a53e0c
JK
1481};
1482
1483static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag)
1484{
61e0f2d0
JK
1485 if (!test_bit(flag, &fi->flags))
1486 set_bit(flag, &fi->flags);
39a53e0c
JK
1487}
1488
1489static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag)
1490{
1491 return test_bit(flag, &fi->flags);
1492}
1493
1494static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag)
1495{
61e0f2d0
JK
1496 if (test_bit(flag, &fi->flags))
1497 clear_bit(flag, &fi->flags);
39a53e0c
JK
1498}
1499
1500static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode)
1501{
1502 fi->i_acl_mode = mode;
1503 set_inode_flag(fi, FI_ACL_MODE);
1504}
1505
444c580f
JK
1506static inline void get_inline_info(struct f2fs_inode_info *fi,
1507 struct f2fs_inode *ri)
1508{
1509 if (ri->i_inline & F2FS_INLINE_XATTR)
1510 set_inode_flag(fi, FI_INLINE_XATTR);
1001b347
HL
1511 if (ri->i_inline & F2FS_INLINE_DATA)
1512 set_inode_flag(fi, FI_INLINE_DATA);
34d67deb
CY
1513 if (ri->i_inline & F2FS_INLINE_DENTRY)
1514 set_inode_flag(fi, FI_INLINE_DENTRY);
b3d208f9
JK
1515 if (ri->i_inline & F2FS_DATA_EXIST)
1516 set_inode_flag(fi, FI_DATA_EXIST);
510022a8
JK
1517 if (ri->i_inline & F2FS_INLINE_DOTS)
1518 set_inode_flag(fi, FI_INLINE_DOTS);
444c580f
JK
1519}
1520
1521static inline void set_raw_inline(struct f2fs_inode_info *fi,
1522 struct f2fs_inode *ri)
1523{
1524 ri->i_inline = 0;
1525
1526 if (is_inode_flag_set(fi, FI_INLINE_XATTR))
1527 ri->i_inline |= F2FS_INLINE_XATTR;
1001b347
HL
1528 if (is_inode_flag_set(fi, FI_INLINE_DATA))
1529 ri->i_inline |= F2FS_INLINE_DATA;
34d67deb
CY
1530 if (is_inode_flag_set(fi, FI_INLINE_DENTRY))
1531 ri->i_inline |= F2FS_INLINE_DENTRY;
b3d208f9
JK
1532 if (is_inode_flag_set(fi, FI_DATA_EXIST))
1533 ri->i_inline |= F2FS_DATA_EXIST;
510022a8
JK
1534 if (is_inode_flag_set(fi, FI_INLINE_DOTS))
1535 ri->i_inline |= F2FS_INLINE_DOTS;
444c580f
JK
1536}
1537
987c7c31
CY
1538static inline int f2fs_has_inline_xattr(struct inode *inode)
1539{
1540 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR);
1541}
1542
81ca7350 1543static inline unsigned int addrs_per_inode(struct inode *inode)
de93653f 1544{
81ca7350 1545 if (f2fs_has_inline_xattr(inode))
de93653f
JK
1546 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
1547 return DEF_ADDRS_PER_INODE;
1548}
1549
65985d93
JK
1550static inline void *inline_xattr_addr(struct page *page)
1551{
695fd1ed 1552 struct f2fs_inode *ri = F2FS_INODE(page);
65985d93
JK
1553 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
1554 F2FS_INLINE_XATTR_ADDRS]);
1555}
1556
1557static inline int inline_xattr_size(struct inode *inode)
1558{
987c7c31 1559 if (f2fs_has_inline_xattr(inode))
65985d93
JK
1560 return F2FS_INLINE_XATTR_ADDRS << 2;
1561 else
1562 return 0;
1563}
1564
0dbdc2ae
JK
1565static inline int f2fs_has_inline_data(struct inode *inode)
1566{
1567 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA);
1568}
1569
b3d208f9
JK
1570static inline void f2fs_clear_inline_inode(struct inode *inode)
1571{
1572 clear_inode_flag(F2FS_I(inode), FI_INLINE_DATA);
1573 clear_inode_flag(F2FS_I(inode), FI_DATA_EXIST);
1574}
1575
1576static inline int f2fs_exist_data(struct inode *inode)
1577{
1578 return is_inode_flag_set(F2FS_I(inode), FI_DATA_EXIST);
1579}
1580
510022a8
JK
1581static inline int f2fs_has_inline_dots(struct inode *inode)
1582{
1583 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DOTS);
1584}
1585
88b88a66
JK
1586static inline bool f2fs_is_atomic_file(struct inode *inode)
1587{
1588 return is_inode_flag_set(F2FS_I(inode), FI_ATOMIC_FILE);
1589}
1590
02a1335f
JK
1591static inline bool f2fs_is_volatile_file(struct inode *inode)
1592{
1593 return is_inode_flag_set(F2FS_I(inode), FI_VOLATILE_FILE);
1594}
1595
3c6c2beb
JK
1596static inline bool f2fs_is_first_block_written(struct inode *inode)
1597{
1598 return is_inode_flag_set(F2FS_I(inode), FI_FIRST_BLOCK_WRITTEN);
1599}
1600
1e84371f
JK
1601static inline bool f2fs_is_drop_cache(struct inode *inode)
1602{
1603 return is_inode_flag_set(F2FS_I(inode), FI_DROP_CACHE);
1604}
1605
1001b347
HL
1606static inline void *inline_data_addr(struct page *page)
1607{
695fd1ed 1608 struct f2fs_inode *ri = F2FS_INODE(page);
1001b347
HL
1609 return (void *)&(ri->i_addr[1]);
1610}
1611
34d67deb
CY
1612static inline int f2fs_has_inline_dentry(struct inode *inode)
1613{
1614 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DENTRY);
1615}
1616
9486ba44
JK
1617static inline void f2fs_dentry_kunmap(struct inode *dir, struct page *page)
1618{
1619 if (!f2fs_has_inline_dentry(dir))
1620 kunmap(page);
1621}
1622
b5492af7
JK
1623static inline int is_file(struct inode *inode, int type)
1624{
1625 return F2FS_I(inode)->i_advise & type;
1626}
1627
1628static inline void set_file(struct inode *inode, int type)
1629{
1630 F2FS_I(inode)->i_advise |= type;
1631}
1632
1633static inline void clear_file(struct inode *inode, int type)
1634{
1635 F2FS_I(inode)->i_advise &= ~type;
1636}
1637
77888c1e
JK
1638static inline int f2fs_readonly(struct super_block *sb)
1639{
1640 return sb->s_flags & MS_RDONLY;
1641}
1642
1e968fdf
JK
1643static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
1644{
1645 return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1646}
1647
744602cf
JK
1648static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi)
1649{
1650 set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1651 sbi->sb->s_flags |= MS_RDONLY;
1652}
1653
eaa693f4
JK
1654static inline bool is_dot_dotdot(const struct qstr *str)
1655{
1656 if (str->len == 1 && str->name[0] == '.')
1657 return true;
1658
1659 if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.')
1660 return true;
1661
1662 return false;
1663}
1664
3e72f721
JK
1665static inline bool f2fs_may_extent_tree(struct inode *inode)
1666{
3e72f721
JK
1667 if (!test_opt(F2FS_I_SB(inode), EXTENT_CACHE) ||
1668 is_inode_flag_set(F2FS_I(inode), FI_NO_EXTENT))
1669 return false;
1670
886f56f9 1671 return S_ISREG(inode->i_mode);
3e72f721
JK
1672}
1673
39307a8e
JK
1674static inline void *f2fs_kvmalloc(size_t size, gfp_t flags)
1675{
1676 void *ret;
1677
1678 ret = kmalloc(size, flags | __GFP_NOWARN);
1679 if (!ret)
1680 ret = __vmalloc(size, flags, PAGE_KERNEL);
1681 return ret;
1682}
1683
1684static inline void *f2fs_kvzalloc(size_t size, gfp_t flags)
1685{
1686 void *ret;
1687
1688 ret = kzalloc(size, flags | __GFP_NOWARN);
1689 if (!ret)
1690 ret = __vmalloc(size, flags | __GFP_ZERO, PAGE_KERNEL);
1691 return ret;
1692}
1693
a6dda0e6
CH
1694#define get_inode_mode(i) \
1695 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1696 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1697
267378d4 1698/* get offset of first page in next direct node */
81ca7350
CY
1699#define PGOFS_OF_NEXT_DNODE(pgofs, inode) \
1700 ((pgofs < ADDRS_PER_INODE(inode)) ? ADDRS_PER_INODE(inode) : \
1701 (pgofs - ADDRS_PER_INODE(inode) + ADDRS_PER_BLOCK) / \
1702 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(inode))
267378d4 1703
39a53e0c
JK
1704/*
1705 * file.c
1706 */
1707int f2fs_sync_file(struct file *, loff_t, loff_t, int);
1708void truncate_data_blocks(struct dnode_of_data *);
764aa3e9 1709int truncate_blocks(struct inode *, u64, bool);
b0154891 1710int f2fs_truncate(struct inode *, bool);
2d4d9fb5 1711int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
39a53e0c
JK
1712int f2fs_setattr(struct dentry *, struct iattr *);
1713int truncate_hole(struct inode *, pgoff_t, pgoff_t);
b292dcab 1714int truncate_data_blocks_range(struct dnode_of_data *, int);
39a53e0c 1715long f2fs_ioctl(struct file *, unsigned int, unsigned long);
e9750824 1716long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long);
39a53e0c
JK
1717
1718/*
1719 * inode.c
1720 */
1721void f2fs_set_inode_flags(struct inode *);
39a53e0c 1722struct inode *f2fs_iget(struct super_block *, unsigned long);
4660f9c0 1723int try_to_free_nats(struct f2fs_sb_info *, int);
12719ae1
JK
1724int update_inode(struct inode *, struct page *);
1725int update_inode_page(struct inode *);
39a53e0c
JK
1726int f2fs_write_inode(struct inode *, struct writeback_control *);
1727void f2fs_evict_inode(struct inode *);
44c16156 1728void handle_failed_inode(struct inode *);
39a53e0c
JK
1729
1730/*
1731 * namei.c
1732 */
1733struct dentry *f2fs_get_parent(struct dentry *child);
1734
1735/*
1736 * dir.c
1737 */
dbeacf02 1738extern unsigned char f2fs_filetype_table[F2FS_FT_MAX];
510022a8 1739void set_de_type(struct f2fs_dir_entry *, umode_t);
6e22c691
JK
1740
1741struct f2fs_dir_entry *find_target_dentry(struct f2fs_filename *,
1742 f2fs_hash_t, int *, struct f2fs_dentry_ptr *);
7b3cd7d6 1743bool f2fs_fill_dentries(struct dir_context *, struct f2fs_dentry_ptr *,
d8c6822a 1744 unsigned int, struct f2fs_str *);
062a3e7b
JK
1745void do_make_empty_dir(struct inode *, struct inode *,
1746 struct f2fs_dentry_ptr *);
dbeacf02 1747struct page *init_inode_metadata(struct inode *, struct inode *,
bce8d112 1748 const struct qstr *, struct page *);
dbeacf02 1749void update_parent_metadata(struct inode *, struct inode *, unsigned int);
a82afa20 1750int room_for_filename(const void *, int, int);
dbeacf02 1751void f2fs_drop_nlink(struct inode *, struct inode *, struct page *);
39a53e0c
JK
1752struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *,
1753 struct page **);
1754struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
1755ino_t f2fs_inode_by_name(struct inode *, struct qstr *);
1756void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
1757 struct page *, struct inode *);
e7d55452 1758int update_dent_inode(struct inode *, struct inode *, const struct qstr *);
510022a8 1759void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *,
3b4d732a 1760 const struct qstr *, f2fs_hash_t , unsigned int);
510022a8
JK
1761int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *, nid_t,
1762 umode_t);
dbeacf02
CY
1763void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *,
1764 struct inode *);
b97a9b5d 1765int f2fs_do_tmpfile(struct inode *, struct inode *);
39a53e0c
JK
1766bool f2fs_empty_dir(struct inode *);
1767
b7f7a5e0
AV
1768static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
1769{
2b0143b5 1770 return __f2fs_add_link(d_inode(dentry->d_parent), &dentry->d_name,
510022a8 1771 inode, inode->i_ino, inode->i_mode);
b7f7a5e0
AV
1772}
1773
39a53e0c
JK
1774/*
1775 * super.c
1776 */
c5bda1c8 1777int f2fs_commit_super(struct f2fs_sb_info *, bool);
39a53e0c 1778int f2fs_sync_fs(struct super_block *, int);
a07ef784
NJ
1779extern __printf(3, 4)
1780void f2fs_msg(struct super_block *, const char *, const char *, ...);
39a53e0c
JK
1781
1782/*
1783 * hash.c
1784 */
eee6160f 1785f2fs_hash_t f2fs_dentry_hash(const struct qstr *);
39a53e0c
JK
1786
1787/*
1788 * node.c
1789 */
1790struct dnode_of_data;
1791struct node_info;
1792
6fb03f3a 1793bool available_free_memory(struct f2fs_sb_info *, int);
2dcf51ab 1794int need_dentry_mark(struct f2fs_sb_info *, nid_t);
88bd02c9 1795bool is_checkpointed_node(struct f2fs_sb_info *, nid_t);
88bd02c9 1796bool need_inode_block_update(struct f2fs_sb_info *, nid_t);
39a53e0c 1797void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
3cf45747 1798pgoff_t get_next_page_offset(struct dnode_of_data *, pgoff_t);
39a53e0c
JK
1799int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);
1800int truncate_inode_blocks(struct inode *, pgoff_t);
4f16fb0f 1801int truncate_xattr_node(struct inode *, struct page *);
cfe58f9d 1802int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t);
13ec7297 1803int remove_inode_page(struct inode *);
a014e037 1804struct page *new_inode_page(struct inode *);
8ae8f162 1805struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *);
39a53e0c
JK
1806void ra_node_page(struct f2fs_sb_info *, nid_t);
1807struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
1808struct page *get_node_page_ra(struct page *, int);
1809void sync_inode_page(struct dnode_of_data *);
1810int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *);
1811bool alloc_nid(struct f2fs_sb_info *, nid_t *);
1812void alloc_nid_done(struct f2fs_sb_info *, nid_t);
1813void alloc_nid_failed(struct f2fs_sb_info *, nid_t);
31696580 1814int try_to_free_nids(struct f2fs_sb_info *, int);
70cfed88 1815void recover_inline_xattr(struct inode *, struct page *);
1c35a90e 1816void recover_xattr_data(struct inode *, struct page *, block_t);
39a53e0c
JK
1817int recover_inode_page(struct f2fs_sb_info *, struct page *);
1818int restore_node_summary(struct f2fs_sb_info *, unsigned int,
1819 struct f2fs_summary_block *);
1820void flush_nat_entries(struct f2fs_sb_info *);
1821int build_node_manager(struct f2fs_sb_info *);
1822void destroy_node_manager(struct f2fs_sb_info *);
6e6093a8 1823int __init create_node_manager_caches(void);
39a53e0c
JK
1824void destroy_node_manager_caches(void);
1825
1826/*
1827 * segment.c
1828 */
88b88a66 1829void register_inmem_page(struct inode *, struct page *);
edb27dee 1830int commit_inmem_pages(struct inode *, bool);
2c4db1a6 1831void f2fs_balance_fs(struct f2fs_sb_info *, bool);
4660f9c0 1832void f2fs_balance_fs_bg(struct f2fs_sb_info *);
6b4afdd7 1833int f2fs_issue_flush(struct f2fs_sb_info *);
2163d198
GZ
1834int create_flush_cmd_control(struct f2fs_sb_info *);
1835void destroy_flush_cmd_control(struct f2fs_sb_info *);
39a53e0c 1836void invalidate_blocks(struct f2fs_sb_info *, block_t);
6e2c64ad 1837bool is_checkpointed_data(struct f2fs_sb_info *, block_t);
5e443818 1838void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t);
836b5a63 1839void clear_prefree_segments(struct f2fs_sb_info *, struct cp_control *);
4b2fecc8 1840void release_discard_addrs(struct f2fs_sb_info *);
e90c2d28 1841bool discard_next_dnode(struct f2fs_sb_info *, block_t);
3fa06d7b 1842int npages_for_summary_flush(struct f2fs_sb_info *, bool);
39a53e0c 1843void allocate_new_segments(struct f2fs_sb_info *);
4b2fecc8 1844int f2fs_trim_fs(struct f2fs_sb_info *, struct fstrim_range *);
39a53e0c 1845struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
381722d2 1846void update_meta_page(struct f2fs_sb_info *, void *, block_t);
577e3495 1847void write_meta_page(struct f2fs_sb_info *, struct page *);
05ca3632
JK
1848void write_node_page(unsigned int, struct f2fs_io_info *);
1849void write_data_page(struct dnode_of_data *, struct f2fs_io_info *);
1850void rewrite_data_page(struct f2fs_io_info *);
528e3459
CY
1851void f2fs_replace_block(struct f2fs_sb_info *, struct dnode_of_data *,
1852 block_t, block_t, unsigned char, bool);
bfad7c2d
JK
1853void allocate_data_block(struct f2fs_sb_info *, struct page *,
1854 block_t, block_t *, struct f2fs_summary *, int);
fec1d657 1855void f2fs_wait_on_page_writeback(struct page *, enum page_type, bool);
08b39fbd 1856void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info *, block_t);
39a53e0c
JK
1857void write_data_summaries(struct f2fs_sb_info *, block_t);
1858void write_node_summaries(struct f2fs_sb_info *, block_t);
1859int lookup_journal_in_cursum(struct f2fs_summary_block *,
1860 int, unsigned int, int);
4b2fecc8 1861void flush_sit_entries(struct f2fs_sb_info *, struct cp_control *);
39a53e0c 1862int build_segment_manager(struct f2fs_sb_info *);
39a53e0c 1863void destroy_segment_manager(struct f2fs_sb_info *);
7fd9e544
JK
1864int __init create_segment_manager_caches(void);
1865void destroy_segment_manager_caches(void);
39a53e0c
JK
1866
1867/*
1868 * checkpoint.c
1869 */
1870struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
1871struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
2b947003 1872struct page *get_tmp_page(struct f2fs_sb_info *, pgoff_t);
f0c9cada 1873bool is_valid_blkaddr(struct f2fs_sb_info *, block_t, int);
26879fb1 1874int ra_meta_pages(struct f2fs_sb_info *, block_t, int, int, bool);
635aee1f 1875void ra_meta_pages_cond(struct f2fs_sb_info *, pgoff_t);
39a53e0c 1876long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
a49324f1
CY
1877void add_ino_entry(struct f2fs_sb_info *, nid_t, int type);
1878void remove_ino_entry(struct f2fs_sb_info *, nid_t, int type);
1879void release_ino_entry(struct f2fs_sb_info *);
fff04f90 1880bool exist_written_data(struct f2fs_sb_info *, nid_t, int);
cbd56e7d
JK
1881int acquire_orphan_inode(struct f2fs_sb_info *);
1882void release_orphan_inode(struct f2fs_sb_info *);
39a53e0c
JK
1883void add_orphan_inode(struct f2fs_sb_info *, nid_t);
1884void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
8c14bfad 1885int recover_orphan_inodes(struct f2fs_sb_info *);
39a53e0c 1886int get_valid_checkpoint(struct f2fs_sb_info *);
a7ffdbe2 1887void update_dirty_page(struct inode *, struct page *);
5deb8267 1888void add_dirty_dir_inode(struct inode *);
c227f912 1889void remove_dirty_inode(struct inode *);
6d5a1495 1890int sync_dirty_inodes(struct f2fs_sb_info *, enum inode_type);
c34f42e2 1891int write_checkpoint(struct f2fs_sb_info *, struct cp_control *);
6451e041 1892void init_ino_entry_info(struct f2fs_sb_info *);
6e6093a8 1893int __init create_checkpoint_caches(void);
39a53e0c
JK
1894void destroy_checkpoint_caches(void);
1895
1896/*
1897 * data.c
1898 */
0fd785eb 1899bool is_merged_page(struct f2fs_sb_info *, struct page *, enum page_type);
458e6197 1900void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int);
05ca3632
JK
1901int f2fs_submit_page_bio(struct f2fs_io_info *);
1902void f2fs_submit_page_mbio(struct f2fs_io_info *);
216a620a 1903void set_data_blkaddr(struct dnode_of_data *);
39a53e0c 1904int reserve_new_block(struct dnode_of_data *);
759af1c9 1905int f2fs_get_block(struct dnode_of_data *, pgoff_t);
b600965c 1906int f2fs_reserve_block(struct dnode_of_data *, pgoff_t);
a56c7c6f 1907struct page *get_read_data_page(struct inode *, pgoff_t, int, bool);
43f3eae1 1908struct page *find_data_page(struct inode *, pgoff_t);
a56c7c6f 1909struct page *get_lock_data_page(struct inode *, pgoff_t, bool);
64aa7ed9 1910struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
05ca3632 1911int do_write_data_page(struct f2fs_io_info *);
d323d005 1912int f2fs_map_blocks(struct inode *, struct f2fs_map_blocks *, int, int);
9ab70134 1913int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64);
487261f3
CY
1914void f2fs_invalidate_page(struct page *, unsigned int, unsigned int);
1915int f2fs_release_page(struct page *, gfp_t);
39a53e0c
JK
1916
1917/*
1918 * gc.c
1919 */
1920int start_gc_thread(struct f2fs_sb_info *);
1921void stop_gc_thread(struct f2fs_sb_info *);
81ca7350 1922block_t start_bidx_of_node(unsigned int, struct inode *);
d530d4d8 1923int f2fs_gc(struct f2fs_sb_info *, bool);
39a53e0c 1924void build_gc_manager(struct f2fs_sb_info *);
39a53e0c
JK
1925
1926/*
1927 * recovery.c
1928 */
6ead1142 1929int recover_fsync_data(struct f2fs_sb_info *);
39a53e0c
JK
1930bool space_for_roll_forward(struct f2fs_sb_info *);
1931
1932/*
1933 * debug.c
1934 */
1935#ifdef CONFIG_F2FS_STAT_FS
1936struct f2fs_stat_info {
1937 struct list_head stat_list;
1938 struct f2fs_sb_info *sbi;
39a53e0c
JK
1939 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
1940 int main_area_segs, main_area_sections, main_area_zones;
5b7ee374
CY
1941 unsigned long long hit_largest, hit_cached, hit_rbtree;
1942 unsigned long long hit_total, total_ext;
c00ba554 1943 int ext_tree, zombie_tree, ext_node;
33fbd510
CY
1944 int ndirty_node, ndirty_meta;
1945 int ndirty_dent, ndirty_dirs, ndirty_data, ndirty_files;
dd4e4b59 1946 int nats, dirty_nats, sits, dirty_sits, fnids;
39a53e0c 1947 int total_count, utilization;
d5e8f6c9
CY
1948 int bg_gc, inmem_pages, wb_pages;
1949 int inline_xattr, inline_inode, inline_dir;
39a53e0c
JK
1950 unsigned int valid_count, valid_node_count, valid_inode_count;
1951 unsigned int bimodal, avg_vblocks;
1952 int util_free, util_valid, util_invalid;
1953 int rsvd_segs, overp_segs;
1954 int dirty_count, node_pages, meta_pages;
42190d2a 1955 int prefree_count, call_count, cp_count, bg_cp_count;
39a53e0c 1956 int tot_segs, node_segs, data_segs, free_segs, free_secs;
e1235983 1957 int bg_node_segs, bg_data_segs;
39a53e0c 1958 int tot_blks, data_blks, node_blks;
e1235983 1959 int bg_data_blks, bg_node_blks;
39a53e0c
JK
1960 int curseg[NR_CURSEG_TYPE];
1961 int cursec[NR_CURSEG_TYPE];
1962 int curzone[NR_CURSEG_TYPE];
1963
1964 unsigned int segment_count[2];
1965 unsigned int block_count[2];
b9a2c252 1966 unsigned int inplace_count;
9edcdabf 1967 unsigned long long base_mem, cache_mem, page_mem;
39a53e0c
JK
1968};
1969
963d4f7d
GZ
1970static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
1971{
6c311ec6 1972 return (struct f2fs_stat_info *)sbi->stat_info;
963d4f7d
GZ
1973}
1974
942e0be6 1975#define stat_inc_cp_count(si) ((si)->cp_count++)
42190d2a 1976#define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++)
dcdfff65
JK
1977#define stat_inc_call_count(si) ((si)->call_count++)
1978#define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
33fbd510
CY
1979#define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++)
1980#define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--)
5b7ee374
CY
1981#define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext))
1982#define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree))
1983#define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest))
1984#define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached))
d5e8f6c9
CY
1985#define stat_inc_inline_xattr(inode) \
1986 do { \
1987 if (f2fs_has_inline_xattr(inode)) \
1988 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
1989 } while (0)
1990#define stat_dec_inline_xattr(inode) \
1991 do { \
1992 if (f2fs_has_inline_xattr(inode)) \
1993 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
1994 } while (0)
0dbdc2ae
JK
1995#define stat_inc_inline_inode(inode) \
1996 do { \
1997 if (f2fs_has_inline_data(inode)) \
03e14d52 1998 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
0dbdc2ae
JK
1999 } while (0)
2000#define stat_dec_inline_inode(inode) \
2001 do { \
2002 if (f2fs_has_inline_data(inode)) \
03e14d52 2003 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
0dbdc2ae 2004 } while (0)
3289c061
JK
2005#define stat_inc_inline_dir(inode) \
2006 do { \
2007 if (f2fs_has_inline_dentry(inode)) \
03e14d52 2008 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
3289c061
JK
2009 } while (0)
2010#define stat_dec_inline_dir(inode) \
2011 do { \
2012 if (f2fs_has_inline_dentry(inode)) \
03e14d52 2013 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
3289c061 2014 } while (0)
dcdfff65
JK
2015#define stat_inc_seg_type(sbi, curseg) \
2016 ((sbi)->segment_count[(curseg)->alloc_type]++)
2017#define stat_inc_block_count(sbi, curseg) \
2018 ((sbi)->block_count[(curseg)->alloc_type]++)
b9a2c252
CL
2019#define stat_inc_inplace_blocks(sbi) \
2020 (atomic_inc(&(sbi)->inplace_count))
e1235983 2021#define stat_inc_seg_count(sbi, type, gc_type) \
39a53e0c 2022 do { \
963d4f7d 2023 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
39a53e0c 2024 (si)->tot_segs++; \
e1235983 2025 if (type == SUM_TYPE_DATA) { \
39a53e0c 2026 si->data_segs++; \
e1235983
CL
2027 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
2028 } else { \
39a53e0c 2029 si->node_segs++; \
e1235983
CL
2030 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
2031 } \
39a53e0c
JK
2032 } while (0)
2033
2034#define stat_inc_tot_blk_count(si, blks) \
2035 (si->tot_blks += (blks))
2036
e1235983 2037#define stat_inc_data_blk_count(sbi, blks, gc_type) \
39a53e0c 2038 do { \
963d4f7d 2039 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
39a53e0c
JK
2040 stat_inc_tot_blk_count(si, blks); \
2041 si->data_blks += (blks); \
e1235983 2042 si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \
39a53e0c
JK
2043 } while (0)
2044
e1235983 2045#define stat_inc_node_blk_count(sbi, blks, gc_type) \
39a53e0c 2046 do { \
963d4f7d 2047 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
39a53e0c
JK
2048 stat_inc_tot_blk_count(si, blks); \
2049 si->node_blks += (blks); \
e1235983 2050 si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \
39a53e0c
JK
2051 } while (0)
2052
2053int f2fs_build_stats(struct f2fs_sb_info *);
2054void f2fs_destroy_stats(struct f2fs_sb_info *);
787c7b8c 2055int __init f2fs_create_root_stats(void);
4589d25d 2056void f2fs_destroy_root_stats(void);
39a53e0c 2057#else
942e0be6 2058#define stat_inc_cp_count(si)
42190d2a 2059#define stat_inc_bg_cp_count(si)
39a53e0c 2060#define stat_inc_call_count(si)
dcdfff65 2061#define stat_inc_bggc_count(si)
33fbd510
CY
2062#define stat_inc_dirty_inode(sbi, type)
2063#define stat_dec_dirty_inode(sbi, type)
dcdfff65 2064#define stat_inc_total_hit(sb)
029e13cc 2065#define stat_inc_rbtree_node_hit(sb)
91c481ff
CY
2066#define stat_inc_largest_node_hit(sbi)
2067#define stat_inc_cached_node_hit(sbi)
d5e8f6c9
CY
2068#define stat_inc_inline_xattr(inode)
2069#define stat_dec_inline_xattr(inode)
0dbdc2ae
JK
2070#define stat_inc_inline_inode(inode)
2071#define stat_dec_inline_inode(inode)
3289c061
JK
2072#define stat_inc_inline_dir(inode)
2073#define stat_dec_inline_dir(inode)
dcdfff65
JK
2074#define stat_inc_seg_type(sbi, curseg)
2075#define stat_inc_block_count(sbi, curseg)
b9a2c252 2076#define stat_inc_inplace_blocks(sbi)
e1235983 2077#define stat_inc_seg_count(sbi, type, gc_type)
39a53e0c 2078#define stat_inc_tot_blk_count(si, blks)
e1235983
CL
2079#define stat_inc_data_blk_count(sbi, blks, gc_type)
2080#define stat_inc_node_blk_count(sbi, blks, gc_type)
39a53e0c
JK
2081
2082static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
2083static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
787c7b8c 2084static inline int __init f2fs_create_root_stats(void) { return 0; }
4589d25d 2085static inline void f2fs_destroy_root_stats(void) { }
39a53e0c
JK
2086#endif
2087
2088extern const struct file_operations f2fs_dir_operations;
2089extern const struct file_operations f2fs_file_operations;
2090extern const struct inode_operations f2fs_file_inode_operations;
2091extern const struct address_space_operations f2fs_dblock_aops;
2092extern const struct address_space_operations f2fs_node_aops;
2093extern const struct address_space_operations f2fs_meta_aops;
2094extern const struct inode_operations f2fs_dir_inode_operations;
2095extern const struct inode_operations f2fs_symlink_inode_operations;
cbaf042a 2096extern const struct inode_operations f2fs_encrypted_symlink_inode_operations;
39a53e0c 2097extern const struct inode_operations f2fs_special_inode_operations;
29e7043f 2098extern struct kmem_cache *inode_entry_slab;
1001b347 2099
e18c65b2
HL
2100/*
2101 * inline.c
2102 */
01b960e9
JK
2103bool f2fs_may_inline_data(struct inode *);
2104bool f2fs_may_inline_dentry(struct inode *);
b3d208f9 2105void read_inline_data(struct page *, struct page *);
0bfcfcca 2106bool truncate_inline_inode(struct page *, u64);
e18c65b2 2107int f2fs_read_inline_data(struct inode *, struct page *);
b3d208f9
JK
2108int f2fs_convert_inline_page(struct dnode_of_data *, struct page *);
2109int f2fs_convert_inline_inode(struct inode *);
2110int f2fs_write_inline_data(struct inode *, struct page *);
0342fd30 2111bool recover_inline_data(struct inode *, struct page *);
6e22c691
JK
2112struct f2fs_dir_entry *find_in_inline_dir(struct inode *,
2113 struct f2fs_filename *, struct page **);
201a05be
CY
2114struct f2fs_dir_entry *f2fs_parent_inline_dir(struct inode *, struct page **);
2115int make_empty_inline_dir(struct inode *inode, struct inode *, struct page *);
510022a8
JK
2116int f2fs_add_inline_entry(struct inode *, const struct qstr *, struct inode *,
2117 nid_t, umode_t);
201a05be
CY
2118void f2fs_delete_inline_entry(struct f2fs_dir_entry *, struct page *,
2119 struct inode *, struct inode *);
2120bool f2fs_empty_inline_dir(struct inode *);
d8c6822a
JK
2121int f2fs_read_inline_dir(struct file *, struct dir_context *,
2122 struct f2fs_str *);
67f8cf3c
JK
2123int f2fs_inline_data_fiemap(struct inode *,
2124 struct fiemap_extent_info *, __u64, __u64);
cde4de12 2125
2658e50d
JK
2126/*
2127 * shrinker.c
2128 */
2129unsigned long f2fs_shrink_count(struct shrinker *, struct shrink_control *);
2130unsigned long f2fs_shrink_scan(struct shrinker *, struct shrink_control *);
2131void f2fs_join_shrinker(struct f2fs_sb_info *);
2132void f2fs_leave_shrinker(struct f2fs_sb_info *);
2133
a28ef1f5
CY
2134/*
2135 * extent_cache.c
2136 */
2137unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *, int);
ed3d1256 2138bool f2fs_init_extent_tree(struct inode *, struct f2fs_extent *);
a28ef1f5
CY
2139unsigned int f2fs_destroy_extent_node(struct inode *);
2140void f2fs_destroy_extent_tree(struct inode *);
2141bool f2fs_lookup_extent_cache(struct inode *, pgoff_t, struct extent_info *);
2142void f2fs_update_extent_cache(struct dnode_of_data *);
19b2c30d
CY
2143void f2fs_update_extent_cache_range(struct dnode_of_data *dn,
2144 pgoff_t, block_t, unsigned int);
a28ef1f5
CY
2145void init_extent_cache_info(struct f2fs_sb_info *);
2146int __init create_extent_cache(void);
2147void destroy_extent_cache(void);
2148
cde4de12
JK
2149/*
2150 * crypto support
2151 */
2152static inline int f2fs_encrypted_inode(struct inode *inode)
2153{
2154#ifdef CONFIG_F2FS_FS_ENCRYPTION
2155 return file_is_encrypt(inode);
2156#else
2157 return 0;
2158#endif
2159}
2160
2161static inline void f2fs_set_encrypted_inode(struct inode *inode)
2162{
2163#ifdef CONFIG_F2FS_FS_ENCRYPTION
2164 file_set_encrypt(inode);
2165#endif
2166}
2167
2168static inline bool f2fs_bio_encrypted(struct bio *bio)
2169{
2170#ifdef CONFIG_F2FS_FS_ENCRYPTION
2171 return unlikely(bio->bi_private != NULL);
2172#else
2173 return false;
2174#endif
2175}
2176
2177static inline int f2fs_sb_has_crypto(struct super_block *sb)
2178{
2179#ifdef CONFIG_F2FS_FS_ENCRYPTION
2180 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_ENCRYPT);
2181#else
2182 return 0;
2183#endif
2184}
f424f664 2185
fcc85a4d
JK
2186static inline bool f2fs_may_encrypt(struct inode *inode)
2187{
2188#ifdef CONFIG_F2FS_FS_ENCRYPTION
886f56f9 2189 umode_t mode = inode->i_mode;
fcc85a4d
JK
2190
2191 return (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode));
2192#else
2193 return 0;
2194#endif
2195}
2196
f424f664
JK
2197/* crypto_policy.c */
2198int f2fs_is_child_context_consistent_with_parent(struct inode *,
2199 struct inode *);
2200int f2fs_inherit_context(struct inode *, struct inode *, struct page *);
2201int f2fs_process_policy(const struct f2fs_encryption_policy *, struct inode *);
2202int f2fs_get_policy(struct inode *, struct f2fs_encryption_policy *);
57e5055b
JK
2203
2204/* crypt.c */
8bacf6de 2205extern struct kmem_cache *f2fs_crypt_info_cachep;
57e5055b
JK
2206bool f2fs_valid_contents_enc_mode(uint32_t);
2207uint32_t f2fs_validate_encryption_key_size(uint32_t, uint32_t);
2208struct f2fs_crypto_ctx *f2fs_get_crypto_ctx(struct inode *);
2209void f2fs_release_crypto_ctx(struct f2fs_crypto_ctx *);
2210struct page *f2fs_encrypt(struct inode *, struct page *);
2211int f2fs_decrypt(struct f2fs_crypto_ctx *, struct page *);
2212int f2fs_decrypt_one(struct inode *, struct page *);
2213void f2fs_end_io_crypto_work(struct f2fs_crypto_ctx *, struct bio *);
2214
0adda907 2215/* crypto_key.c */
26bf3dc7 2216void f2fs_free_encryption_info(struct inode *, struct f2fs_crypt_info *);
0adda907
JK
2217int _f2fs_get_encryption_info(struct inode *inode);
2218
6b3bd08f
JK
2219/* crypto_fname.c */
2220bool f2fs_valid_filenames_enc_mode(uint32_t);
2221u32 f2fs_fname_crypto_round_up(u32, u32);
2222int f2fs_fname_crypto_alloc_buffer(struct inode *, u32, struct f2fs_str *);
2223int f2fs_fname_disk_to_usr(struct inode *, f2fs_hash_t *,
2224 const struct f2fs_str *, struct f2fs_str *);
2225int f2fs_fname_usr_to_disk(struct inode *, const struct qstr *,
2226 struct f2fs_str *);
2227
57e5055b
JK
2228#ifdef CONFIG_F2FS_FS_ENCRYPTION
2229void f2fs_restore_and_release_control_page(struct page **);
2230void f2fs_restore_control_page(struct page *);
2231
cfc4d971
JK
2232int __init f2fs_init_crypto(void);
2233int f2fs_crypto_initialize(void);
57e5055b 2234void f2fs_exit_crypto(void);
0adda907
JK
2235
2236int f2fs_has_encryption_key(struct inode *);
2237
2238static inline int f2fs_get_encryption_info(struct inode *inode)
2239{
2240 struct f2fs_crypt_info *ci = F2FS_I(inode)->i_crypt_info;
2241
2242 if (!ci ||
2243 (ci->ci_keyring_key &&
2244 (ci->ci_keyring_key->flags & ((1 << KEY_FLAG_INVALIDATED) |
2245 (1 << KEY_FLAG_REVOKED) |
2246 (1 << KEY_FLAG_DEAD)))))
2247 return _f2fs_get_encryption_info(inode);
2248 return 0;
2249}
6b3bd08f 2250
6b3bd08f
JK
2251void f2fs_fname_crypto_free_buffer(struct f2fs_str *);
2252int f2fs_fname_setup_filename(struct inode *, const struct qstr *,
2253 int lookup, struct f2fs_filename *);
2254void f2fs_fname_free_filename(struct f2fs_filename *);
57e5055b
JK
2255#else
2256static inline void f2fs_restore_and_release_control_page(struct page **p) { }
2257static inline void f2fs_restore_control_page(struct page *p) { }
2258
cfc4d971 2259static inline int __init f2fs_init_crypto(void) { return 0; }
57e5055b 2260static inline void f2fs_exit_crypto(void) { }
0adda907
JK
2261
2262static inline int f2fs_has_encryption_key(struct inode *i) { return 0; }
2263static inline int f2fs_get_encryption_info(struct inode *i) { return 0; }
6b3bd08f
JK
2264static inline void f2fs_fname_crypto_free_buffer(struct f2fs_str *p) { }
2265
2266static inline int f2fs_fname_setup_filename(struct inode *dir,
2267 const struct qstr *iname,
2268 int lookup, struct f2fs_filename *fname)
2269{
2270 memset(fname, 0, sizeof(struct f2fs_filename));
2271 fname->usr_fname = iname;
2272 fname->disk_name.name = (unsigned char *)iname->name;
2273 fname->disk_name.len = iname->len;
2274 return 0;
2275}
2276
2277static inline void f2fs_fname_free_filename(struct f2fs_filename *fname) { }
57e5055b 2278#endif
39a53e0c 2279#endif