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f2fs: fix memory leak of kobject in error path of fill_super
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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>
39a53e0c 24
5d56b671 25#ifdef CONFIG_F2FS_CHECK_FS
9850cf4a 26#define f2fs_bug_on(sbi, condition) BUG_ON(condition)
0daaad97 27#define f2fs_down_write(x, y) down_write_nest_lock(x, y)
5d56b671 28#else
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29#define f2fs_bug_on(sbi, condition) \
30 do { \
31 if (unlikely(condition)) { \
32 WARN_ON(1); \
caf0047e 33 set_sbi_flag(sbi, SBI_NEED_FSCK); \
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34 } \
35 } while (0)
0daaad97 36#define f2fs_down_write(x, y) down_write(x)
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37#endif
38
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39/*
40 * For mount options
41 */
42#define F2FS_MOUNT_BG_GC 0x00000001
43#define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
44#define F2FS_MOUNT_DISCARD 0x00000004
45#define F2FS_MOUNT_NOHEAP 0x00000008
46#define F2FS_MOUNT_XATTR_USER 0x00000010
47#define F2FS_MOUNT_POSIX_ACL 0x00000020
48#define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
444c580f 49#define F2FS_MOUNT_INLINE_XATTR 0x00000080
1001b347 50#define F2FS_MOUNT_INLINE_DATA 0x00000100
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51#define F2FS_MOUNT_INLINE_DENTRY 0x00000200
52#define F2FS_MOUNT_FLUSH_MERGE 0x00000400
53#define F2FS_MOUNT_NOBARRIER 0x00000800
d5053a34 54#define F2FS_MOUNT_FASTBOOT 0x00001000
89672159 55#define F2FS_MOUNT_EXTENT_CACHE 0x00002000
6aefd93b 56#define F2FS_MOUNT_FORCE_FG_GC 0x00004000
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57
58#define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
59#define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
60#define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
61
62#define ver_after(a, b) (typecheck(unsigned long long, a) && \
63 typecheck(unsigned long long, b) && \
64 ((long long)((a) - (b)) > 0))
65
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66typedef u32 block_t; /*
67 * should not change u32, since it is the on-disk block
68 * address format, __le32.
69 */
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70typedef u32 nid_t;
71
72struct f2fs_mount_info {
73 unsigned int opt;
74};
75
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76#define F2FS_FEATURE_ENCRYPT 0x0001
77
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78#define F2FS_HAS_FEATURE(sb, mask) \
79 ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
80#define F2FS_SET_FEATURE(sb, mask) \
81 F2FS_SB(sb)->raw_super->feature |= cpu_to_le32(mask)
82#define F2FS_CLEAR_FEATURE(sb, mask) \
83 F2FS_SB(sb)->raw_super->feature &= ~cpu_to_le32(mask)
84
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85#define CRCPOLY_LE 0xedb88320
86
87static inline __u32 f2fs_crc32(void *buf, size_t len)
39a53e0c 88{
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89 unsigned char *p = (unsigned char *)buf;
90 __u32 crc = F2FS_SUPER_MAGIC;
91 int i;
92
93 while (len--) {
94 crc ^= *p++;
95 for (i = 0; i < 8; i++)
96 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
97 }
98 return crc;
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99}
100
7e586fa0 101static inline bool f2fs_crc_valid(__u32 blk_crc, void *buf, size_t buf_size)
39a53e0c 102{
7e586fa0 103 return f2fs_crc32(buf, buf_size) == blk_crc;
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104}
105
106/*
107 * For checkpoint manager
108 */
109enum {
110 NAT_BITMAP,
111 SIT_BITMAP
112};
113
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114enum {
115 CP_UMOUNT,
119ee914 116 CP_FASTBOOT,
75ab4cb8 117 CP_SYNC,
10027551 118 CP_RECOVERY,
4b2fecc8 119 CP_DISCARD,
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120};
121
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122#define DEF_BATCHED_TRIM_SECTIONS 32
123#define BATCHED_TRIM_SEGMENTS(sbi) \
124 (SM_I(sbi)->trim_sections * (sbi)->segs_per_sec)
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125#define BATCHED_TRIM_BLOCKS(sbi) \
126 (BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg)
60b99b48 127#define DEF_CP_INTERVAL 60 /* 60 secs */
bba681cb 128
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129struct cp_control {
130 int reason;
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131 __u64 trim_start;
132 __u64 trim_end;
133 __u64 trim_minlen;
134 __u64 trimmed;
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135};
136
662befda 137/*
81c1a0f1 138 * For CP/NAT/SIT/SSA readahead
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139 */
140enum {
141 META_CP,
142 META_NAT,
81c1a0f1 143 META_SIT,
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144 META_SSA,
145 META_POR,
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146};
147
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148/* for the list of ino */
149enum {
150 ORPHAN_INO, /* for orphan ino list */
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151 APPEND_INO, /* for append ino list */
152 UPDATE_INO, /* for update ino list */
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153 MAX_INO_ENTRY, /* max. list */
154};
155
156struct ino_entry {
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157 struct list_head list; /* list head */
158 nid_t ino; /* inode number */
159};
160
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161/*
162 * for the list of directory inodes or gc inodes.
163 * NOTE: there are two slab users for this structure, if we add/modify/delete
164 * fields in structure for one of slab users, it may affect fields or size of
165 * other one, in this condition, it's better to split both of slab and related
166 * data structure.
167 */
168struct inode_entry {
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169 struct list_head list; /* list head */
170 struct inode *inode; /* vfs inode pointer */
171};
172
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173/* for the list of blockaddresses to be discarded */
174struct discard_entry {
175 struct list_head list; /* list head */
176 block_t blkaddr; /* block address to be discarded */
177 int len; /* # of consecutive blocks of the discard */
178};
179
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180/* for the list of fsync inodes, used only during recovery */
181struct fsync_inode_entry {
182 struct list_head list; /* list head */
183 struct inode *inode; /* vfs inode pointer */
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184 block_t blkaddr; /* block address locating the last fsync */
185 block_t last_dentry; /* block address locating the last dentry */
186 block_t last_inode; /* block address locating the last inode */
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187};
188
189#define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
190#define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
191
192#define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
193#define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
194#define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
195#define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
196
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197#define MAX_NAT_JENTRIES(sum) (NAT_JOURNAL_ENTRIES - nats_in_cursum(sum))
198#define MAX_SIT_JENTRIES(sum) (SIT_JOURNAL_ENTRIES - sits_in_cursum(sum))
199
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200static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i)
201{
202 int before = nats_in_cursum(rs);
203 rs->n_nats = cpu_to_le16(before + i);
204 return before;
205}
206
207static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i)
208{
209 int before = sits_in_cursum(rs);
210 rs->n_sits = cpu_to_le16(before + i);
211 return before;
212}
213
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214static inline bool __has_cursum_space(struct f2fs_summary_block *sum, int size,
215 int type)
216{
217 if (type == NAT_JOURNAL)
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218 return size <= MAX_NAT_JENTRIES(sum);
219 return size <= MAX_SIT_JENTRIES(sum);
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220}
221
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222/*
223 * ioctl commands
224 */
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225#define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
226#define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
d49f3e89 227#define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
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228
229#define F2FS_IOCTL_MAGIC 0xf5
230#define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
231#define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
02a1335f 232#define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
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233#define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
234#define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
c1c1b583 235#define F2FS_IOC_GARBAGE_COLLECT _IO(F2FS_IOCTL_MAGIC, 6)
456b88e4 236#define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7)
d323d005 237#define F2FS_IOC_DEFRAGMENT _IO(F2FS_IOCTL_MAGIC, 8)
e9750824 238
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239#define F2FS_IOC_SET_ENCRYPTION_POLICY \
240 _IOR('f', 19, struct f2fs_encryption_policy)
241#define F2FS_IOC_GET_ENCRYPTION_PWSALT \
242 _IOW('f', 20, __u8[16])
243#define F2FS_IOC_GET_ENCRYPTION_POLICY \
244 _IOW('f', 21, struct f2fs_encryption_policy)
245
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246/*
247 * should be same as XFS_IOC_GOINGDOWN.
248 * Flags for going down operation used by FS_IOC_GOINGDOWN
249 */
250#define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
251#define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
252#define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
253#define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
c912a829 254#define F2FS_GOING_DOWN_METAFLUSH 0x3 /* going down with meta flush */
1abff93d 255
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256#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
257/*
258 * ioctl commands in 32 bit emulation
259 */
260#define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
261#define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
262#endif
263
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264struct f2fs_defragment {
265 u64 start;
266 u64 len;
267};
268
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269/*
270 * For INODE and NODE manager
271 */
7b3cd7d6 272/* for directory operations */
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273struct f2fs_str {
274 unsigned char *name;
275 u32 len;
276};
277
278struct f2fs_filename {
279 const struct qstr *usr_fname;
280 struct f2fs_str disk_name;
281 f2fs_hash_t hash;
282#ifdef CONFIG_F2FS_FS_ENCRYPTION
283 struct f2fs_str crypto_buf;
284#endif
285};
286
287#define FSTR_INIT(n, l) { .name = n, .len = l }
288#define FSTR_TO_QSTR(f) QSTR_INIT((f)->name, (f)->len)
289#define fname_name(p) ((p)->disk_name.name)
290#define fname_len(p) ((p)->disk_name.len)
291
7b3cd7d6 292struct f2fs_dentry_ptr {
d8c6822a 293 struct inode *inode;
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294 const void *bitmap;
295 struct f2fs_dir_entry *dentry;
296 __u8 (*filename)[F2FS_SLOT_LEN];
297 int max;
298};
299
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300static inline void make_dentry_ptr(struct inode *inode,
301 struct f2fs_dentry_ptr *d, void *src, int type)
7b3cd7d6 302{
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303 d->inode = inode;
304
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305 if (type == 1) {
306 struct f2fs_dentry_block *t = (struct f2fs_dentry_block *)src;
307 d->max = NR_DENTRY_IN_BLOCK;
308 d->bitmap = &t->dentry_bitmap;
309 d->dentry = t->dentry;
310 d->filename = t->filename;
311 } else {
312 struct f2fs_inline_dentry *t = (struct f2fs_inline_dentry *)src;
313 d->max = NR_INLINE_DENTRY;
314 d->bitmap = &t->dentry_bitmap;
315 d->dentry = t->dentry;
316 d->filename = t->filename;
317 }
318}
319
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320/*
321 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
322 * as its node offset to distinguish from index node blocks.
323 * But some bits are used to mark the node block.
324 */
325#define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
326 >> OFFSET_BIT_SHIFT)
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327enum {
328 ALLOC_NODE, /* allocate a new node page if needed */
329 LOOKUP_NODE, /* look up a node without readahead */
330 LOOKUP_NODE_RA, /*
331 * look up a node with readahead called
4f4124d0 332 * by get_data_block.
39a53e0c 333 */
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334};
335
a6db67f0 336#define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */
39a53e0c 337
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338#define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
339
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340/* vector size for gang look-up from extent cache that consists of radix tree */
341#define EXT_TREE_VEC_SIZE 64
342
39a53e0c 343/* for in-memory extent cache entry */
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344#define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
345
346/* number of extent info in extent cache we try to shrink */
347#define EXTENT_CACHE_SHRINK_NUMBER 128
c11abd1a 348
39a53e0c 349struct extent_info {
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350 unsigned int fofs; /* start offset in a file */
351 u32 blk; /* start block address of the extent */
352 unsigned int len; /* length of the extent */
353};
354
355struct extent_node {
356 struct rb_node rb_node; /* rb node located in rb-tree */
357 struct list_head list; /* node in global extent list of sbi */
358 struct extent_info ei; /* extent info */
359};
360
361struct extent_tree {
362 nid_t ino; /* inode number */
363 struct rb_root root; /* root of extent info rb-tree */
62c8af65 364 struct extent_node *cached_en; /* recently accessed extent node */
3e72f721 365 struct extent_info largest; /* largested extent info */
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366 rwlock_t lock; /* protect extent info rb-tree */
367 atomic_t refcount; /* reference count of rb-tree */
368 unsigned int count; /* # of extent node in rb-tree*/
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369};
370
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371/*
372 * This structure is taken from ext4_map_blocks.
373 *
374 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
375 */
376#define F2FS_MAP_NEW (1 << BH_New)
377#define F2FS_MAP_MAPPED (1 << BH_Mapped)
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378#define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten)
379#define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
380 F2FS_MAP_UNWRITTEN)
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381
382struct f2fs_map_blocks {
383 block_t m_pblk;
384 block_t m_lblk;
385 unsigned int m_len;
386 unsigned int m_flags;
387};
388
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389/* for flag in get_data_block */
390#define F2FS_GET_BLOCK_READ 0
391#define F2FS_GET_BLOCK_DIO 1
392#define F2FS_GET_BLOCK_FIEMAP 2
393#define F2FS_GET_BLOCK_BMAP 3
394
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395/*
396 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
397 */
398#define FADVISE_COLD_BIT 0x01
354a3399 399#define FADVISE_LOST_PINO_BIT 0x02
cde4de12 400#define FADVISE_ENCRYPT_BIT 0x04
e7d55452 401#define FADVISE_ENC_NAME_BIT 0x08
39a53e0c 402
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403#define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
404#define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
405#define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
406#define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
407#define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
408#define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
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409#define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
410#define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
411#define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
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412#define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
413#define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
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414
415/* Encryption algorithms */
416#define F2FS_ENCRYPTION_MODE_INVALID 0
417#define F2FS_ENCRYPTION_MODE_AES_256_XTS 1
418#define F2FS_ENCRYPTION_MODE_AES_256_GCM 2
419#define F2FS_ENCRYPTION_MODE_AES_256_CBC 3
420#define F2FS_ENCRYPTION_MODE_AES_256_CTS 4
b5492af7 421
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422#include "f2fs_crypto.h"
423
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424#define DEF_DIR_LEVEL 0
425
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426struct f2fs_inode_info {
427 struct inode vfs_inode; /* serve a vfs inode */
428 unsigned long i_flags; /* keep an inode flags for ioctl */
429 unsigned char i_advise; /* use to give file attribute hints */
38431545 430 unsigned char i_dir_level; /* use for dentry level for large dir */
39a53e0c 431 unsigned int i_current_depth; /* use only in directory structure */
6666e6aa 432 unsigned int i_pino; /* parent inode number */
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433 umode_t i_acl_mode; /* keep file acl mode temporarily */
434
435 /* Use below internally in f2fs*/
436 unsigned long flags; /* use to pass per-file flags */
d928bfbf 437 struct rw_semaphore i_sem; /* protect fi info */
a7ffdbe2 438 atomic_t dirty_pages; /* # of dirty pages */
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439 f2fs_hash_t chash; /* hash value of given file name */
440 unsigned int clevel; /* maximum level of given file name */
441 nid_t i_xattr_nid; /* node id that contains xattrs */
e518ff81 442 unsigned long long xattr_ver; /* cp version of xattr modification */
06292073 443 struct inode_entry *dirty_dir; /* the pointer of dirty dir */
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444
445 struct list_head inmem_pages; /* inmemory pages managed by f2fs */
446 struct mutex inmem_lock; /* lock for inmemory pages */
cde4de12 447
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448 struct extent_tree *extent_tree; /* cached extent_tree entry */
449
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450#ifdef CONFIG_F2FS_FS_ENCRYPTION
451 /* Encryption params */
452 struct f2fs_crypt_info *i_crypt_info;
453#endif
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454};
455
456static inline void get_extent_info(struct extent_info *ext,
457 struct f2fs_extent i_ext)
458{
39a53e0c 459 ext->fofs = le32_to_cpu(i_ext.fofs);
4d0b0bd4 460 ext->blk = le32_to_cpu(i_ext.blk);
39a53e0c 461 ext->len = le32_to_cpu(i_ext.len);
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462}
463
464static inline void set_raw_extent(struct extent_info *ext,
465 struct f2fs_extent *i_ext)
466{
39a53e0c 467 i_ext->fofs = cpu_to_le32(ext->fofs);
4d0b0bd4 468 i_ext->blk = cpu_to_le32(ext->blk);
39a53e0c 469 i_ext->len = cpu_to_le32(ext->len);
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470}
471
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472static inline void set_extent_info(struct extent_info *ei, unsigned int fofs,
473 u32 blk, unsigned int len)
474{
475 ei->fofs = fofs;
476 ei->blk = blk;
477 ei->len = len;
478}
479
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480static inline bool __is_extent_same(struct extent_info *ei1,
481 struct extent_info *ei2)
482{
483 return (ei1->fofs == ei2->fofs && ei1->blk == ei2->blk &&
484 ei1->len == ei2->len);
485}
486
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487static inline bool __is_extent_mergeable(struct extent_info *back,
488 struct extent_info *front)
489{
490 return (back->fofs + back->len == front->fofs &&
491 back->blk + back->len == front->blk);
492}
493
494static inline bool __is_back_mergeable(struct extent_info *cur,
495 struct extent_info *back)
496{
497 return __is_extent_mergeable(back, cur);
498}
499
500static inline bool __is_front_mergeable(struct extent_info *cur,
501 struct extent_info *front)
502{
503 return __is_extent_mergeable(cur, front);
504}
505
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506static inline void __try_update_largest_extent(struct extent_tree *et,
507 struct extent_node *en)
508{
509 if (en->ei.len > et->largest.len)
510 et->largest = en->ei;
511}
512
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513struct f2fs_nm_info {
514 block_t nat_blkaddr; /* base disk address of NAT */
515 nid_t max_nid; /* maximum possible node ids */
7ee0eeab 516 nid_t available_nids; /* maximum available node ids */
39a53e0c 517 nid_t next_scan_nid; /* the next nid to be scanned */
cdfc41c1 518 unsigned int ram_thresh; /* control the memory footprint */
ea1a29a0 519 unsigned int ra_nid_pages; /* # of nid pages to be readaheaded */
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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 */
553 block_t data_blkaddr; /* block address of the node block */
554};
555
556static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
557 struct page *ipage, struct page *npage, nid_t nid)
558{
d66d1f76 559 memset(dn, 0, sizeof(*dn));
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560 dn->inode = inode;
561 dn->inode_page = ipage;
562 dn->node_page = npage;
563 dn->nid = nid;
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564}
565
566/*
567 * For SIT manager
568 *
569 * By default, there are 6 active log areas across the whole main area.
570 * When considering hot and cold data separation to reduce cleaning overhead,
571 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
572 * respectively.
573 * In the current design, you should not change the numbers intentionally.
574 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
575 * logs individually according to the underlying devices. (default: 6)
576 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
577 * data and 8 for node logs.
578 */
579#define NR_CURSEG_DATA_TYPE (3)
580#define NR_CURSEG_NODE_TYPE (3)
581#define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
582
583enum {
584 CURSEG_HOT_DATA = 0, /* directory entry blocks */
585 CURSEG_WARM_DATA, /* data blocks */
586 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
587 CURSEG_HOT_NODE, /* direct node blocks of directory files */
588 CURSEG_WARM_NODE, /* direct node blocks of normal files */
589 CURSEG_COLD_NODE, /* indirect node blocks */
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590 NO_CHECK_TYPE,
591 CURSEG_DIRECT_IO, /* to use for the direct IO path */
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592};
593
6b4afdd7 594struct flush_cmd {
6b4afdd7 595 struct completion wait;
721bd4d5 596 struct llist_node llnode;
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597 int ret;
598};
599
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600struct flush_cmd_control {
601 struct task_struct *f2fs_issue_flush; /* flush thread */
602 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
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603 struct llist_head issue_list; /* list for command issue */
604 struct llist_node *dispatch_list; /* list for command dispatch */
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605};
606
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607struct f2fs_sm_info {
608 struct sit_info *sit_info; /* whole segment information */
609 struct free_segmap_info *free_info; /* free segment information */
610 struct dirty_seglist_info *dirty_info; /* dirty segment information */
611 struct curseg_info *curseg_array; /* active segment information */
612
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613 block_t seg0_blkaddr; /* block address of 0'th segment */
614 block_t main_blkaddr; /* start block address of main area */
615 block_t ssa_blkaddr; /* start block address of SSA area */
616
617 unsigned int segment_count; /* total # of segments */
618 unsigned int main_segments; /* # of segments in main area */
619 unsigned int reserved_segments; /* # of reserved segments */
620 unsigned int ovp_segments; /* # of overprovision segments */
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621
622 /* a threshold to reclaim prefree segments */
623 unsigned int rec_prefree_segments;
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624
625 /* for small discard management */
626 struct list_head discard_list; /* 4KB discard list */
627 int nr_discards; /* # of discards in the list */
628 int max_discards; /* max. discards to be issued */
216fbd64 629
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630 /* for batched trimming */
631 unsigned int trim_sections; /* # of sections to trim */
632
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633 struct list_head sit_entry_set; /* sit entry set list */
634
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635 unsigned int ipu_policy; /* in-place-update policy */
636 unsigned int min_ipu_util; /* in-place-update threshold */
c1ce1b02 637 unsigned int min_fsync_blocks; /* threshold for fsync */
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638
639 /* for flush command control */
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640 struct flush_cmd_control *cmd_control_info;
641
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642};
643
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644/*
645 * For superblock
646 */
647/*
648 * COUNT_TYPE for monitoring
649 *
650 * f2fs monitors the number of several block types such as on-writeback,
651 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
652 */
653enum count_type {
654 F2FS_WRITEBACK,
655 F2FS_DIRTY_DENTS,
656 F2FS_DIRTY_NODES,
657 F2FS_DIRTY_META,
8dcf2ff7 658 F2FS_INMEM_PAGES,
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659 NR_COUNT_TYPE,
660};
661
39a53e0c 662/*
e1c42045 663 * The below are the page types of bios used in submit_bio().
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664 * The available types are:
665 * DATA User data pages. It operates as async mode.
666 * NODE Node pages. It operates as async mode.
667 * META FS metadata pages such as SIT, NAT, CP.
668 * NR_PAGE_TYPE The number of page types.
669 * META_FLUSH Make sure the previous pages are written
670 * with waiting the bio's completion
671 * ... Only can be used with META.
672 */
7d5e5109 673#define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
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674enum page_type {
675 DATA,
676 NODE,
677 META,
678 NR_PAGE_TYPE,
679 META_FLUSH,
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680 INMEM, /* the below types are used by tracepoints only. */
681 INMEM_DROP,
682 IPU,
683 OPU,
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684};
685
458e6197 686struct f2fs_io_info {
05ca3632 687 struct f2fs_sb_info *sbi; /* f2fs_sb_info pointer */
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688 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
689 int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
cf04e8eb 690 block_t blk_addr; /* block address to be written */
05ca3632 691 struct page *page; /* page to be written */
4375a336 692 struct page *encrypted_page; /* encrypted page */
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693};
694
93dfe2ac 695#define is_read_io(rw) (((rw) & 1) == READ)
1ff7bd3b 696struct f2fs_bio_info {
458e6197 697 struct f2fs_sb_info *sbi; /* f2fs superblock */
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698 struct bio *bio; /* bios to merge */
699 sector_t last_block_in_bio; /* last block number */
458e6197 700 struct f2fs_io_info fio; /* store buffered io info. */
df0f8dc0 701 struct rw_semaphore io_rwsem; /* blocking op for bio */
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702};
703
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704/* for inner inode cache management */
705struct inode_management {
706 struct radix_tree_root ino_root; /* ino entry array */
707 spinlock_t ino_lock; /* for ino entry lock */
708 struct list_head ino_list; /* inode list head */
709 unsigned long ino_num; /* number of entries */
710};
711
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712/* For s_flag in struct f2fs_sb_info */
713enum {
714 SBI_IS_DIRTY, /* dirty flag for checkpoint */
715 SBI_IS_CLOSE, /* specify unmounting */
716 SBI_NEED_FSCK, /* need fsck.f2fs to fix */
717 SBI_POR_DOING, /* recovery is doing or not */
718};
719
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720struct f2fs_sb_info {
721 struct super_block *sb; /* pointer to VFS super block */
5e176d54 722 struct proc_dir_entry *s_proc; /* proc entry */
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723 struct buffer_head *raw_super_buf; /* buffer head of raw sb */
724 struct f2fs_super_block *raw_super; /* raw super block pointer */
caf0047e 725 int s_flag; /* flags for sbi */
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726
727 /* for node-related operations */
728 struct f2fs_nm_info *nm_info; /* node manager */
729 struct inode *node_inode; /* cache node blocks */
730
731 /* for segment-related operations */
732 struct f2fs_sm_info *sm_info; /* segment manager */
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733
734 /* for bio operations */
924b720b 735 struct f2fs_bio_info read_io; /* for read bios */
1ff7bd3b 736 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */
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737
738 /* for checkpoint */
739 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
740 struct inode *meta_inode; /* cache meta blocks */
39936837 741 struct mutex cp_mutex; /* checkpoint procedure lock */
e479556b 742 struct rw_semaphore cp_rwsem; /* blocking FS operations */
b3582c68 743 struct rw_semaphore node_write; /* locking node writes */
5463e7c1 744 struct mutex writepages; /* mutex for writepages() */
fb51b5ef 745 wait_queue_head_t cp_wait;
60b99b48 746 long cp_expires, cp_interval; /* next expected periodic cp */
39a53e0c 747
67298804 748 struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */
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749
750 /* for orphan inode, use 0'th array */
0d47c1ad 751 unsigned int max_orphans; /* max orphan inodes */
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752
753 /* for directory inode management */
754 struct list_head dir_inode_list; /* dir inode list */
755 spinlock_t dir_inode_lock; /* for dir inode list lock */
39a53e0c 756
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757 /* for extent tree cache */
758 struct radix_tree_root extent_tree_root;/* cache extent cache entries */
759 struct rw_semaphore extent_tree_lock; /* locking extent radix tree */
760 struct list_head extent_list; /* lru list for shrinker */
761 spinlock_t extent_lock; /* locking extent lru list */
762 int total_ext_tree; /* extent tree count */
763 atomic_t total_ext_node; /* extent info count */
764
e1c42045 765 /* basic filesystem units */
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766 unsigned int log_sectors_per_block; /* log2 sectors per block */
767 unsigned int log_blocksize; /* log2 block size */
768 unsigned int blocksize; /* block size */
769 unsigned int root_ino_num; /* root inode number*/
770 unsigned int node_ino_num; /* node inode number*/
771 unsigned int meta_ino_num; /* meta inode number*/
772 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
773 unsigned int blocks_per_seg; /* blocks per segment */
774 unsigned int segs_per_sec; /* segments per section */
775 unsigned int secs_per_zone; /* sections per zone */
776 unsigned int total_sections; /* total section count */
777 unsigned int total_node_count; /* total node block count */
778 unsigned int total_valid_node_count; /* valid node block count */
779 unsigned int total_valid_inode_count; /* valid inode count */
780 int active_logs; /* # of active logs */
ab9fa662 781 int dir_level; /* directory level */
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782
783 block_t user_block_count; /* # of user blocks */
784 block_t total_valid_block_count; /* # of valid blocks */
785 block_t alloc_valid_block_count; /* # of allocated blocks */
a66cdd98 786 block_t discard_blks; /* discard command candidats */
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787 block_t last_valid_block_count; /* for recovery */
788 u32 s_next_generation; /* for NFS support */
789 atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */
790
791 struct f2fs_mount_info mount_opt; /* mount options */
792
793 /* for cleaning operations */
794 struct mutex gc_mutex; /* mutex for GC */
795 struct f2fs_gc_kthread *gc_thread; /* GC thread */
5ec4e49f 796 unsigned int cur_victim_sec; /* current victim section num */
39a53e0c 797
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798 /* maximum # of trials to find a victim segment for SSR and GC */
799 unsigned int max_victim_search;
800
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801 /*
802 * for stat information.
803 * one is for the LFS mode, and the other is for the SSR mode.
804 */
35b09d82 805#ifdef CONFIG_F2FS_STAT_FS
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806 struct f2fs_stat_info *stat_info; /* FS status information */
807 unsigned int segment_count[2]; /* # of allocated segments */
808 unsigned int block_count[2]; /* # of allocated blocks */
b9a2c252 809 atomic_t inplace_count; /* # of inplace update */
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810 atomic64_t total_hit_ext; /* # of lookup extent cache */
811 atomic64_t read_hit_rbtree; /* # of hit rbtree extent node */
812 atomic64_t read_hit_largest; /* # of hit largest extent node */
813 atomic64_t read_hit_cached; /* # of hit cached extent node */
d5e8f6c9 814 atomic_t inline_xattr; /* # of inline_xattr inodes */
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815 atomic_t inline_inode; /* # of inline_data inodes */
816 atomic_t inline_dir; /* # of inline_dentry inodes */
39a53e0c 817 int bg_gc; /* background gc calls */
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818 unsigned int n_dirty_dirs; /* # of dir inodes */
819#endif
820 unsigned int last_victim[2]; /* last victim segment # */
39a53e0c 821 spinlock_t stat_lock; /* lock for stat operations */
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822
823 /* For sysfs suppport */
824 struct kobject s_kobj;
825 struct completion s_kobj_unregister;
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826
827 /* For shrinker support */
828 struct list_head s_list;
829 struct mutex umount_mutex;
830 unsigned int shrinker_run_no;
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831};
832
833/*
834 * Inline functions
835 */
836static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
837{
838 return container_of(inode, struct f2fs_inode_info, vfs_inode);
839}
840
841static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
842{
843 return sb->s_fs_info;
844}
845
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846static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
847{
848 return F2FS_SB(inode->i_sb);
849}
850
851static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
852{
853 return F2FS_I_SB(mapping->host);
854}
855
856static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
857{
858 return F2FS_M_SB(page->mapping);
859}
860
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861static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
862{
863 return (struct f2fs_super_block *)(sbi->raw_super);
864}
865
866static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
867{
868 return (struct f2fs_checkpoint *)(sbi->ckpt);
869}
870
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871static inline struct f2fs_node *F2FS_NODE(struct page *page)
872{
873 return (struct f2fs_node *)page_address(page);
874}
875
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876static inline struct f2fs_inode *F2FS_INODE(struct page *page)
877{
878 return &((struct f2fs_node *)page_address(page))->i;
879}
880
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881static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
882{
883 return (struct f2fs_nm_info *)(sbi->nm_info);
884}
885
886static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
887{
888 return (struct f2fs_sm_info *)(sbi->sm_info);
889}
890
891static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
892{
893 return (struct sit_info *)(SM_I(sbi)->sit_info);
894}
895
896static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
897{
898 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
899}
900
901static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
902{
903 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
904}
905
9df27d98
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906static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
907{
908 return sbi->meta_inode->i_mapping;
909}
910
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911static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
912{
913 return sbi->node_inode->i_mapping;
914}
915
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916static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
917{
918 return sbi->s_flag & (0x01 << type);
919}
920
921static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
39a53e0c 922{
caf0047e 923 sbi->s_flag |= (0x01 << type);
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924}
925
caf0047e 926static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
39a53e0c 927{
caf0047e 928 sbi->s_flag &= ~(0x01 << type);
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929}
930
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931static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
932{
933 return le64_to_cpu(cp->checkpoint_ver);
934}
935
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936static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
937{
938 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
939 return ckpt_flags & f;
940}
941
942static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
943{
944 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
945 ckpt_flags |= f;
946 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
947}
948
949static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
950{
951 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
952 ckpt_flags &= (~f);
953 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
954}
955
e479556b 956static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
39936837 957{
e479556b 958 down_read(&sbi->cp_rwsem);
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959}
960
e479556b 961static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
39a53e0c 962{
e479556b 963 up_read(&sbi->cp_rwsem);
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964}
965
e479556b 966static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
39a53e0c 967{
0daaad97 968 f2fs_down_write(&sbi->cp_rwsem, &sbi->cp_mutex);
39936837
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969}
970
e479556b 971static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
39936837 972{
e479556b 973 up_write(&sbi->cp_rwsem);
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974}
975
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976static inline int __get_cp_reason(struct f2fs_sb_info *sbi)
977{
978 int reason = CP_SYNC;
979
980 if (test_opt(sbi, FASTBOOT))
981 reason = CP_FASTBOOT;
982 if (is_sbi_flag_set(sbi, SBI_IS_CLOSE))
983 reason = CP_UMOUNT;
984 return reason;
985}
986
987static inline bool __remain_node_summaries(int reason)
988{
989 return (reason == CP_UMOUNT || reason == CP_FASTBOOT);
990}
991
992static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
993{
994 return (is_set_ckpt_flags(F2FS_CKPT(sbi), CP_UMOUNT_FLAG) ||
995 is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FASTBOOT_FLAG));
996}
997
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998/*
999 * Check whether the given nid is within node id range.
1000 */
064e0823 1001static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
39a53e0c 1002{
d6b7d4b3
CY
1003 if (unlikely(nid < F2FS_ROOT_INO(sbi)))
1004 return -EINVAL;
cfb271d4 1005 if (unlikely(nid >= NM_I(sbi)->max_nid))
064e0823
NJ
1006 return -EINVAL;
1007 return 0;
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1008}
1009
1010#define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
1011
1012/*
1013 * Check whether the inode has blocks or not
1014 */
1015static inline int F2FS_HAS_BLOCKS(struct inode *inode)
1016{
1017 if (F2FS_I(inode)->i_xattr_nid)
6c311ec6 1018 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1;
39a53e0c 1019 else
6c311ec6 1020 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS;
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1021}
1022
4bc8e9bc
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1023static inline bool f2fs_has_xattr_block(unsigned int ofs)
1024{
1025 return ofs == XATTR_NODE_OFFSET;
1026}
1027
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1028static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
1029 struct inode *inode, blkcnt_t count)
1030{
1031 block_t valid_block_count;
1032
1033 spin_lock(&sbi->stat_lock);
1034 valid_block_count =
1035 sbi->total_valid_block_count + (block_t)count;
cfb271d4 1036 if (unlikely(valid_block_count > sbi->user_block_count)) {
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1037 spin_unlock(&sbi->stat_lock);
1038 return false;
1039 }
1040 inode->i_blocks += count;
1041 sbi->total_valid_block_count = valid_block_count;
1042 sbi->alloc_valid_block_count += (block_t)count;
1043 spin_unlock(&sbi->stat_lock);
1044 return true;
1045}
1046
da19b0dc 1047static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
39a53e0c
JK
1048 struct inode *inode,
1049 blkcnt_t count)
1050{
1051 spin_lock(&sbi->stat_lock);
9850cf4a
JK
1052 f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
1053 f2fs_bug_on(sbi, inode->i_blocks < count);
39a53e0c
JK
1054 inode->i_blocks -= count;
1055 sbi->total_valid_block_count -= (block_t)count;
1056 spin_unlock(&sbi->stat_lock);
39a53e0c
JK
1057}
1058
1059static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
1060{
1061 atomic_inc(&sbi->nr_pages[count_type]);
caf0047e 1062 set_sbi_flag(sbi, SBI_IS_DIRTY);
39a53e0c
JK
1063}
1064
a7ffdbe2 1065static inline void inode_inc_dirty_pages(struct inode *inode)
39a53e0c 1066{
a7ffdbe2
JK
1067 atomic_inc(&F2FS_I(inode)->dirty_pages);
1068 if (S_ISDIR(inode->i_mode))
1069 inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS);
39a53e0c
JK
1070}
1071
1072static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
1073{
1074 atomic_dec(&sbi->nr_pages[count_type]);
1075}
1076
a7ffdbe2 1077static inline void inode_dec_dirty_pages(struct inode *inode)
39a53e0c 1078{
5ac9f36f
CY
1079 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
1080 !S_ISLNK(inode->i_mode))
1fe54f9d
JK
1081 return;
1082
a7ffdbe2
JK
1083 atomic_dec(&F2FS_I(inode)->dirty_pages);
1084
1085 if (S_ISDIR(inode->i_mode))
1086 dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS);
39a53e0c
JK
1087}
1088
1089static inline int get_pages(struct f2fs_sb_info *sbi, int count_type)
1090{
1091 return atomic_read(&sbi->nr_pages[count_type]);
1092}
1093
a7ffdbe2 1094static inline int get_dirty_pages(struct inode *inode)
f8b2c1f9 1095{
a7ffdbe2 1096 return atomic_read(&F2FS_I(inode)->dirty_pages);
f8b2c1f9
JK
1097}
1098
5ac206cf
NJ
1099static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
1100{
1101 unsigned int pages_per_sec = sbi->segs_per_sec *
1102 (1 << sbi->log_blocks_per_seg);
1103 return ((get_pages(sbi, block_type) + pages_per_sec - 1)
1104 >> sbi->log_blocks_per_seg) / sbi->segs_per_sec;
1105}
1106
39a53e0c
JK
1107static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
1108{
8b8343fa 1109 return sbi->total_valid_block_count;
39a53e0c
JK
1110}
1111
1112static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
1113{
1114 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1115
1116 /* return NAT or SIT bitmap */
1117 if (flag == NAT_BITMAP)
1118 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
1119 else if (flag == SIT_BITMAP)
1120 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
1121
1122 return 0;
1123}
1124
55141486
WL
1125static inline block_t __cp_payload(struct f2fs_sb_info *sbi)
1126{
1127 return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
1128}
1129
39a53e0c
JK
1130static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
1131{
1132 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1dbe4152
CL
1133 int offset;
1134
55141486 1135 if (__cp_payload(sbi) > 0) {
1dbe4152
CL
1136 if (flag == NAT_BITMAP)
1137 return &ckpt->sit_nat_version_bitmap;
1138 else
65b85ccc 1139 return (unsigned char *)ckpt + F2FS_BLKSIZE;
1dbe4152
CL
1140 } else {
1141 offset = (flag == NAT_BITMAP) ?
25ca923b 1142 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
1dbe4152
CL
1143 return &ckpt->sit_nat_version_bitmap + offset;
1144 }
39a53e0c
JK
1145}
1146
1147static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
1148{
1149 block_t start_addr;
1150 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
d71b5564 1151 unsigned long long ckpt_version = cur_cp_version(ckpt);
39a53e0c 1152
25ca923b 1153 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
39a53e0c
JK
1154
1155 /*
1156 * odd numbered checkpoint should at cp segment 0
e1c42045 1157 * and even segment must be at cp segment 1
39a53e0c
JK
1158 */
1159 if (!(ckpt_version & 1))
1160 start_addr += sbi->blocks_per_seg;
1161
1162 return start_addr;
1163}
1164
1165static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
1166{
1167 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
1168}
1169
1170static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
ef86d709 1171 struct inode *inode)
39a53e0c
JK
1172{
1173 block_t valid_block_count;
1174 unsigned int valid_node_count;
1175
1176 spin_lock(&sbi->stat_lock);
1177
ef86d709 1178 valid_block_count = sbi->total_valid_block_count + 1;
cfb271d4 1179 if (unlikely(valid_block_count > sbi->user_block_count)) {
39a53e0c
JK
1180 spin_unlock(&sbi->stat_lock);
1181 return false;
1182 }
1183
ef86d709 1184 valid_node_count = sbi->total_valid_node_count + 1;
cfb271d4 1185 if (unlikely(valid_node_count > sbi->total_node_count)) {
39a53e0c
JK
1186 spin_unlock(&sbi->stat_lock);
1187 return false;
1188 }
1189
1190 if (inode)
ef86d709
GZ
1191 inode->i_blocks++;
1192
1193 sbi->alloc_valid_block_count++;
1194 sbi->total_valid_node_count++;
1195 sbi->total_valid_block_count++;
39a53e0c
JK
1196 spin_unlock(&sbi->stat_lock);
1197
1198 return true;
1199}
1200
1201static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
ef86d709 1202 struct inode *inode)
39a53e0c
JK
1203{
1204 spin_lock(&sbi->stat_lock);
1205
9850cf4a
JK
1206 f2fs_bug_on(sbi, !sbi->total_valid_block_count);
1207 f2fs_bug_on(sbi, !sbi->total_valid_node_count);
1208 f2fs_bug_on(sbi, !inode->i_blocks);
39a53e0c 1209
ef86d709
GZ
1210 inode->i_blocks--;
1211 sbi->total_valid_node_count--;
1212 sbi->total_valid_block_count--;
39a53e0c
JK
1213
1214 spin_unlock(&sbi->stat_lock);
1215}
1216
1217static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
1218{
8b8343fa 1219 return sbi->total_valid_node_count;
39a53e0c
JK
1220}
1221
1222static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
1223{
1224 spin_lock(&sbi->stat_lock);
9850cf4a 1225 f2fs_bug_on(sbi, sbi->total_valid_inode_count == sbi->total_node_count);
39a53e0c
JK
1226 sbi->total_valid_inode_count++;
1227 spin_unlock(&sbi->stat_lock);
1228}
1229
0e80220a 1230static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
39a53e0c
JK
1231{
1232 spin_lock(&sbi->stat_lock);
9850cf4a 1233 f2fs_bug_on(sbi, !sbi->total_valid_inode_count);
39a53e0c
JK
1234 sbi->total_valid_inode_count--;
1235 spin_unlock(&sbi->stat_lock);
39a53e0c
JK
1236}
1237
1238static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi)
1239{
8b8343fa 1240 return sbi->total_valid_inode_count;
39a53e0c
JK
1241}
1242
a56c7c6f
JK
1243static inline struct page *f2fs_grab_cache_page(struct address_space *mapping,
1244 pgoff_t index, bool for_write)
1245{
1246 if (!for_write)
1247 return grab_cache_page(mapping, index);
1248 return grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS);
1249}
1250
6e2c64ad
JK
1251static inline void f2fs_copy_page(struct page *src, struct page *dst)
1252{
1253 char *src_kaddr = kmap(src);
1254 char *dst_kaddr = kmap(dst);
1255
1256 memcpy(dst_kaddr, src_kaddr, PAGE_SIZE);
1257 kunmap(dst);
1258 kunmap(src);
1259}
1260
39a53e0c
JK
1261static inline void f2fs_put_page(struct page *page, int unlock)
1262{
031fa8cc 1263 if (!page)
39a53e0c
JK
1264 return;
1265
1266 if (unlock) {
9850cf4a 1267 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
39a53e0c
JK
1268 unlock_page(page);
1269 }
1270 page_cache_release(page);
1271}
1272
1273static inline void f2fs_put_dnode(struct dnode_of_data *dn)
1274{
1275 if (dn->node_page)
1276 f2fs_put_page(dn->node_page, 1);
1277 if (dn->inode_page && dn->node_page != dn->inode_page)
1278 f2fs_put_page(dn->inode_page, 0);
1279 dn->node_page = NULL;
1280 dn->inode_page = NULL;
1281}
1282
1283static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
e8512d2e 1284 size_t size)
39a53e0c 1285{
e8512d2e 1286 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
39a53e0c
JK
1287}
1288
7bd59381
GZ
1289static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
1290 gfp_t flags)
1291{
1292 void *entry;
7bd59381 1293
80c54505
JK
1294 entry = kmem_cache_alloc(cachep, flags);
1295 if (!entry)
1296 entry = kmem_cache_alloc(cachep, flags | __GFP_NOFAIL);
7bd59381
GZ
1297 return entry;
1298}
1299
740432f8
JK
1300static inline struct bio *f2fs_bio_alloc(int npages)
1301{
1302 struct bio *bio;
1303
1304 /* No failure on bio allocation */
740432f8 1305 bio = bio_alloc(GFP_NOIO, npages);
80c54505
JK
1306 if (!bio)
1307 bio = bio_alloc(GFP_NOIO | __GFP_NOFAIL, npages);
740432f8
JK
1308 return bio;
1309}
1310
9be32d72
JK
1311static inline void f2fs_radix_tree_insert(struct radix_tree_root *root,
1312 unsigned long index, void *item)
1313{
1314 while (radix_tree_insert(root, index, item))
1315 cond_resched();
1316}
1317
39a53e0c
JK
1318#define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1319
1320static inline bool IS_INODE(struct page *page)
1321{
45590710 1322 struct f2fs_node *p = F2FS_NODE(page);
39a53e0c
JK
1323 return RAW_IS_INODE(p);
1324}
1325
1326static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
1327{
1328 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
1329}
1330
1331static inline block_t datablock_addr(struct page *node_page,
1332 unsigned int offset)
1333{
1334 struct f2fs_node *raw_node;
1335 __le32 *addr_array;
45590710 1336 raw_node = F2FS_NODE(node_page);
39a53e0c
JK
1337 addr_array = blkaddr_in_node(raw_node);
1338 return le32_to_cpu(addr_array[offset]);
1339}
1340
1341static inline int f2fs_test_bit(unsigned int nr, char *addr)
1342{
1343 int mask;
1344
1345 addr += (nr >> 3);
1346 mask = 1 << (7 - (nr & 0x07));
1347 return mask & *addr;
1348}
1349
a66cdd98
JK
1350static inline void f2fs_set_bit(unsigned int nr, char *addr)
1351{
1352 int mask;
1353
1354 addr += (nr >> 3);
1355 mask = 1 << (7 - (nr & 0x07));
1356 *addr |= mask;
1357}
1358
1359static inline void f2fs_clear_bit(unsigned int nr, char *addr)
1360{
1361 int mask;
1362
1363 addr += (nr >> 3);
1364 mask = 1 << (7 - (nr & 0x07));
1365 *addr &= ~mask;
1366}
1367
52aca074 1368static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
39a53e0c
JK
1369{
1370 int mask;
1371 int ret;
1372
1373 addr += (nr >> 3);
1374 mask = 1 << (7 - (nr & 0x07));
1375 ret = mask & *addr;
1376 *addr |= mask;
1377 return ret;
1378}
1379
52aca074 1380static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
39a53e0c
JK
1381{
1382 int mask;
1383 int ret;
1384
1385 addr += (nr >> 3);
1386 mask = 1 << (7 - (nr & 0x07));
1387 ret = mask & *addr;
1388 *addr &= ~mask;
1389 return ret;
1390}
1391
c6ac4c0e
GZ
1392static inline void f2fs_change_bit(unsigned int nr, char *addr)
1393{
1394 int mask;
1395
1396 addr += (nr >> 3);
1397 mask = 1 << (7 - (nr & 0x07));
1398 *addr ^= mask;
1399}
1400
39a53e0c
JK
1401/* used for f2fs_inode_info->flags */
1402enum {
1403 FI_NEW_INODE, /* indicate newly allocated inode */
b3783873 1404 FI_DIRTY_INODE, /* indicate inode is dirty or not */
ed57c27f 1405 FI_DIRTY_DIR, /* indicate directory has dirty pages */
39a53e0c
JK
1406 FI_INC_LINK, /* need to increment i_nlink */
1407 FI_ACL_MODE, /* indicate acl mode */
1408 FI_NO_ALLOC, /* should not allocate any blocks */
c9b63bd0 1409 FI_FREE_NID, /* free allocated nide */
699489bb 1410 FI_UPDATE_DIR, /* should update inode block for consistency */
74d0b917 1411 FI_DELAY_IPUT, /* used for the recovery */
c11abd1a 1412 FI_NO_EXTENT, /* not to use the extent cache */
444c580f 1413 FI_INLINE_XATTR, /* used for inline xattr */
1001b347 1414 FI_INLINE_DATA, /* used for inline data*/
34d67deb 1415 FI_INLINE_DENTRY, /* used for inline dentry */
fff04f90
JK
1416 FI_APPEND_WRITE, /* inode has appended data */
1417 FI_UPDATE_WRITE, /* inode has in-place-update data */
88b88a66
JK
1418 FI_NEED_IPU, /* used for ipu per file */
1419 FI_ATOMIC_FILE, /* indicate atomic file */
02a1335f 1420 FI_VOLATILE_FILE, /* indicate volatile file */
3c6c2beb 1421 FI_FIRST_BLOCK_WRITTEN, /* indicate #0 data block was written */
1e84371f 1422 FI_DROP_CACHE, /* drop dirty page cache */
b3d208f9 1423 FI_DATA_EXIST, /* indicate data exists */
510022a8 1424 FI_INLINE_DOTS, /* indicate inline dot dentries */
d323d005 1425 FI_DO_DEFRAG, /* indicate defragment is running */
39a53e0c
JK
1426};
1427
1428static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag)
1429{
61e0f2d0
JK
1430 if (!test_bit(flag, &fi->flags))
1431 set_bit(flag, &fi->flags);
39a53e0c
JK
1432}
1433
1434static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag)
1435{
1436 return test_bit(flag, &fi->flags);
1437}
1438
1439static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag)
1440{
61e0f2d0
JK
1441 if (test_bit(flag, &fi->flags))
1442 clear_bit(flag, &fi->flags);
39a53e0c
JK
1443}
1444
1445static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode)
1446{
1447 fi->i_acl_mode = mode;
1448 set_inode_flag(fi, FI_ACL_MODE);
1449}
1450
444c580f
JK
1451static inline void get_inline_info(struct f2fs_inode_info *fi,
1452 struct f2fs_inode *ri)
1453{
1454 if (ri->i_inline & F2FS_INLINE_XATTR)
1455 set_inode_flag(fi, FI_INLINE_XATTR);
1001b347
HL
1456 if (ri->i_inline & F2FS_INLINE_DATA)
1457 set_inode_flag(fi, FI_INLINE_DATA);
34d67deb
CY
1458 if (ri->i_inline & F2FS_INLINE_DENTRY)
1459 set_inode_flag(fi, FI_INLINE_DENTRY);
b3d208f9
JK
1460 if (ri->i_inline & F2FS_DATA_EXIST)
1461 set_inode_flag(fi, FI_DATA_EXIST);
510022a8
JK
1462 if (ri->i_inline & F2FS_INLINE_DOTS)
1463 set_inode_flag(fi, FI_INLINE_DOTS);
444c580f
JK
1464}
1465
1466static inline void set_raw_inline(struct f2fs_inode_info *fi,
1467 struct f2fs_inode *ri)
1468{
1469 ri->i_inline = 0;
1470
1471 if (is_inode_flag_set(fi, FI_INLINE_XATTR))
1472 ri->i_inline |= F2FS_INLINE_XATTR;
1001b347
HL
1473 if (is_inode_flag_set(fi, FI_INLINE_DATA))
1474 ri->i_inline |= F2FS_INLINE_DATA;
34d67deb
CY
1475 if (is_inode_flag_set(fi, FI_INLINE_DENTRY))
1476 ri->i_inline |= F2FS_INLINE_DENTRY;
b3d208f9
JK
1477 if (is_inode_flag_set(fi, FI_DATA_EXIST))
1478 ri->i_inline |= F2FS_DATA_EXIST;
510022a8
JK
1479 if (is_inode_flag_set(fi, FI_INLINE_DOTS))
1480 ri->i_inline |= F2FS_INLINE_DOTS;
444c580f
JK
1481}
1482
987c7c31
CY
1483static inline int f2fs_has_inline_xattr(struct inode *inode)
1484{
1485 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR);
1486}
1487
de93653f
JK
1488static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi)
1489{
987c7c31 1490 if (f2fs_has_inline_xattr(&fi->vfs_inode))
de93653f
JK
1491 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
1492 return DEF_ADDRS_PER_INODE;
1493}
1494
65985d93
JK
1495static inline void *inline_xattr_addr(struct page *page)
1496{
695fd1ed 1497 struct f2fs_inode *ri = F2FS_INODE(page);
65985d93
JK
1498 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
1499 F2FS_INLINE_XATTR_ADDRS]);
1500}
1501
1502static inline int inline_xattr_size(struct inode *inode)
1503{
987c7c31 1504 if (f2fs_has_inline_xattr(inode))
65985d93
JK
1505 return F2FS_INLINE_XATTR_ADDRS << 2;
1506 else
1507 return 0;
1508}
1509
0dbdc2ae
JK
1510static inline int f2fs_has_inline_data(struct inode *inode)
1511{
1512 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA);
1513}
1514
b3d208f9
JK
1515static inline void f2fs_clear_inline_inode(struct inode *inode)
1516{
1517 clear_inode_flag(F2FS_I(inode), FI_INLINE_DATA);
1518 clear_inode_flag(F2FS_I(inode), FI_DATA_EXIST);
1519}
1520
1521static inline int f2fs_exist_data(struct inode *inode)
1522{
1523 return is_inode_flag_set(F2FS_I(inode), FI_DATA_EXIST);
1524}
1525
510022a8
JK
1526static inline int f2fs_has_inline_dots(struct inode *inode)
1527{
1528 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DOTS);
1529}
1530
88b88a66
JK
1531static inline bool f2fs_is_atomic_file(struct inode *inode)
1532{
1533 return is_inode_flag_set(F2FS_I(inode), FI_ATOMIC_FILE);
1534}
1535
02a1335f
JK
1536static inline bool f2fs_is_volatile_file(struct inode *inode)
1537{
1538 return is_inode_flag_set(F2FS_I(inode), FI_VOLATILE_FILE);
1539}
1540
3c6c2beb
JK
1541static inline bool f2fs_is_first_block_written(struct inode *inode)
1542{
1543 return is_inode_flag_set(F2FS_I(inode), FI_FIRST_BLOCK_WRITTEN);
1544}
1545
1e84371f
JK
1546static inline bool f2fs_is_drop_cache(struct inode *inode)
1547{
1548 return is_inode_flag_set(F2FS_I(inode), FI_DROP_CACHE);
1549}
1550
1001b347
HL
1551static inline void *inline_data_addr(struct page *page)
1552{
695fd1ed 1553 struct f2fs_inode *ri = F2FS_INODE(page);
1001b347
HL
1554 return (void *)&(ri->i_addr[1]);
1555}
1556
34d67deb
CY
1557static inline int f2fs_has_inline_dentry(struct inode *inode)
1558{
1559 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DENTRY);
1560}
1561
9486ba44
JK
1562static inline void f2fs_dentry_kunmap(struct inode *dir, struct page *page)
1563{
1564 if (!f2fs_has_inline_dentry(dir))
1565 kunmap(page);
1566}
1567
b5492af7
JK
1568static inline int is_file(struct inode *inode, int type)
1569{
1570 return F2FS_I(inode)->i_advise & type;
1571}
1572
1573static inline void set_file(struct inode *inode, int type)
1574{
1575 F2FS_I(inode)->i_advise |= type;
1576}
1577
1578static inline void clear_file(struct inode *inode, int type)
1579{
1580 F2FS_I(inode)->i_advise &= ~type;
1581}
1582
77888c1e
JK
1583static inline int f2fs_readonly(struct super_block *sb)
1584{
1585 return sb->s_flags & MS_RDONLY;
1586}
1587
1e968fdf
JK
1588static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
1589{
1590 return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1591}
1592
744602cf
JK
1593static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi)
1594{
1595 set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1596 sbi->sb->s_flags |= MS_RDONLY;
1597}
1598
eaa693f4
JK
1599static inline bool is_dot_dotdot(const struct qstr *str)
1600{
1601 if (str->len == 1 && str->name[0] == '.')
1602 return true;
1603
1604 if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.')
1605 return true;
1606
1607 return false;
1608}
1609
3e72f721
JK
1610static inline bool f2fs_may_extent_tree(struct inode *inode)
1611{
1612 mode_t mode = inode->i_mode;
1613
1614 if (!test_opt(F2FS_I_SB(inode), EXTENT_CACHE) ||
1615 is_inode_flag_set(F2FS_I(inode), FI_NO_EXTENT))
1616 return false;
1617
1618 return S_ISREG(mode);
1619}
1620
39307a8e
JK
1621static inline void *f2fs_kvmalloc(size_t size, gfp_t flags)
1622{
1623 void *ret;
1624
1625 ret = kmalloc(size, flags | __GFP_NOWARN);
1626 if (!ret)
1627 ret = __vmalloc(size, flags, PAGE_KERNEL);
1628 return ret;
1629}
1630
1631static inline void *f2fs_kvzalloc(size_t size, gfp_t flags)
1632{
1633 void *ret;
1634
1635 ret = kzalloc(size, flags | __GFP_NOWARN);
1636 if (!ret)
1637 ret = __vmalloc(size, flags | __GFP_ZERO, PAGE_KERNEL);
1638 return ret;
1639}
1640
a6dda0e6
CH
1641#define get_inode_mode(i) \
1642 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1643 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1644
267378d4
CY
1645/* get offset of first page in next direct node */
1646#define PGOFS_OF_NEXT_DNODE(pgofs, fi) \
1647 ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \
1648 (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \
1649 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi))
1650
39a53e0c
JK
1651/*
1652 * file.c
1653 */
1654int f2fs_sync_file(struct file *, loff_t, loff_t, int);
1655void truncate_data_blocks(struct dnode_of_data *);
764aa3e9 1656int truncate_blocks(struct inode *, u64, bool);
b0154891 1657int f2fs_truncate(struct inode *, bool);
2d4d9fb5 1658int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
39a53e0c
JK
1659int f2fs_setattr(struct dentry *, struct iattr *);
1660int truncate_hole(struct inode *, pgoff_t, pgoff_t);
b292dcab 1661int truncate_data_blocks_range(struct dnode_of_data *, int);
39a53e0c 1662long f2fs_ioctl(struct file *, unsigned int, unsigned long);
e9750824 1663long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long);
39a53e0c
JK
1664
1665/*
1666 * inode.c
1667 */
1668void f2fs_set_inode_flags(struct inode *);
39a53e0c 1669struct inode *f2fs_iget(struct super_block *, unsigned long);
4660f9c0 1670int try_to_free_nats(struct f2fs_sb_info *, int);
39a53e0c 1671void update_inode(struct inode *, struct page *);
744602cf 1672void update_inode_page(struct inode *);
39a53e0c
JK
1673int f2fs_write_inode(struct inode *, struct writeback_control *);
1674void f2fs_evict_inode(struct inode *);
44c16156 1675void handle_failed_inode(struct inode *);
39a53e0c
JK
1676
1677/*
1678 * namei.c
1679 */
1680struct dentry *f2fs_get_parent(struct dentry *child);
1681
1682/*
1683 * dir.c
1684 */
dbeacf02 1685extern unsigned char f2fs_filetype_table[F2FS_FT_MAX];
510022a8 1686void set_de_type(struct f2fs_dir_entry *, umode_t);
6e22c691
JK
1687
1688struct f2fs_dir_entry *find_target_dentry(struct f2fs_filename *,
1689 f2fs_hash_t, int *, struct f2fs_dentry_ptr *);
7b3cd7d6 1690bool f2fs_fill_dentries(struct dir_context *, struct f2fs_dentry_ptr *,
d8c6822a 1691 unsigned int, struct f2fs_str *);
062a3e7b
JK
1692void do_make_empty_dir(struct inode *, struct inode *,
1693 struct f2fs_dentry_ptr *);
dbeacf02 1694struct page *init_inode_metadata(struct inode *, struct inode *,
bce8d112 1695 const struct qstr *, struct page *);
dbeacf02 1696void update_parent_metadata(struct inode *, struct inode *, unsigned int);
a82afa20 1697int room_for_filename(const void *, int, int);
dbeacf02 1698void f2fs_drop_nlink(struct inode *, struct inode *, struct page *);
39a53e0c
JK
1699struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *,
1700 struct page **);
1701struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
1702ino_t f2fs_inode_by_name(struct inode *, struct qstr *);
1703void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
1704 struct page *, struct inode *);
e7d55452 1705int update_dent_inode(struct inode *, struct inode *, const struct qstr *);
510022a8 1706void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *,
3b4d732a 1707 const struct qstr *, f2fs_hash_t , unsigned int);
510022a8
JK
1708int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *, nid_t,
1709 umode_t);
dbeacf02
CY
1710void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *,
1711 struct inode *);
b97a9b5d 1712int f2fs_do_tmpfile(struct inode *, struct inode *);
39a53e0c
JK
1713bool f2fs_empty_dir(struct inode *);
1714
b7f7a5e0
AV
1715static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
1716{
2b0143b5 1717 return __f2fs_add_link(d_inode(dentry->d_parent), &dentry->d_name,
510022a8 1718 inode, inode->i_ino, inode->i_mode);
b7f7a5e0
AV
1719}
1720
39a53e0c
JK
1721/*
1722 * super.c
1723 */
c5bda1c8 1724int f2fs_commit_super(struct f2fs_sb_info *, bool);
39a53e0c 1725int f2fs_sync_fs(struct super_block *, int);
a07ef784
NJ
1726extern __printf(3, 4)
1727void f2fs_msg(struct super_block *, const char *, const char *, ...);
39a53e0c
JK
1728
1729/*
1730 * hash.c
1731 */
eee6160f 1732f2fs_hash_t f2fs_dentry_hash(const struct qstr *);
39a53e0c
JK
1733
1734/*
1735 * node.c
1736 */
1737struct dnode_of_data;
1738struct node_info;
1739
6fb03f3a 1740bool available_free_memory(struct f2fs_sb_info *, int);
2dcf51ab 1741int need_dentry_mark(struct f2fs_sb_info *, nid_t);
88bd02c9 1742bool is_checkpointed_node(struct f2fs_sb_info *, nid_t);
88bd02c9 1743bool need_inode_block_update(struct f2fs_sb_info *, nid_t);
39a53e0c
JK
1744void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
1745int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);
1746int truncate_inode_blocks(struct inode *, pgoff_t);
4f16fb0f 1747int truncate_xattr_node(struct inode *, struct page *);
cfe58f9d 1748int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t);
13ec7297 1749int remove_inode_page(struct inode *);
a014e037 1750struct page *new_inode_page(struct inode *);
8ae8f162 1751struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *);
39a53e0c
JK
1752void ra_node_page(struct f2fs_sb_info *, nid_t);
1753struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
1754struct page *get_node_page_ra(struct page *, int);
1755void sync_inode_page(struct dnode_of_data *);
1756int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *);
1757bool alloc_nid(struct f2fs_sb_info *, nid_t *);
1758void alloc_nid_done(struct f2fs_sb_info *, nid_t);
1759void alloc_nid_failed(struct f2fs_sb_info *, nid_t);
31696580 1760int try_to_free_nids(struct f2fs_sb_info *, int);
70cfed88 1761void recover_inline_xattr(struct inode *, struct page *);
1c35a90e 1762void recover_xattr_data(struct inode *, struct page *, block_t);
39a53e0c
JK
1763int recover_inode_page(struct f2fs_sb_info *, struct page *);
1764int restore_node_summary(struct f2fs_sb_info *, unsigned int,
1765 struct f2fs_summary_block *);
1766void flush_nat_entries(struct f2fs_sb_info *);
1767int build_node_manager(struct f2fs_sb_info *);
1768void destroy_node_manager(struct f2fs_sb_info *);
6e6093a8 1769int __init create_node_manager_caches(void);
39a53e0c
JK
1770void destroy_node_manager_caches(void);
1771
1772/*
1773 * segment.c
1774 */
88b88a66 1775void register_inmem_page(struct inode *, struct page *);
edb27dee 1776int commit_inmem_pages(struct inode *, bool);
39a53e0c 1777void f2fs_balance_fs(struct f2fs_sb_info *);
4660f9c0 1778void f2fs_balance_fs_bg(struct f2fs_sb_info *);
6b4afdd7 1779int f2fs_issue_flush(struct f2fs_sb_info *);
2163d198
GZ
1780int create_flush_cmd_control(struct f2fs_sb_info *);
1781void destroy_flush_cmd_control(struct f2fs_sb_info *);
39a53e0c 1782void invalidate_blocks(struct f2fs_sb_info *, block_t);
6e2c64ad 1783bool is_checkpointed_data(struct f2fs_sb_info *, block_t);
5e443818 1784void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t);
836b5a63 1785void clear_prefree_segments(struct f2fs_sb_info *, struct cp_control *);
4b2fecc8 1786void release_discard_addrs(struct f2fs_sb_info *);
e90c2d28 1787bool discard_next_dnode(struct f2fs_sb_info *, block_t);
3fa06d7b 1788int npages_for_summary_flush(struct f2fs_sb_info *, bool);
39a53e0c 1789void allocate_new_segments(struct f2fs_sb_info *);
4b2fecc8 1790int f2fs_trim_fs(struct f2fs_sb_info *, struct fstrim_range *);
39a53e0c 1791struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
381722d2 1792void update_meta_page(struct f2fs_sb_info *, void *, block_t);
577e3495 1793void write_meta_page(struct f2fs_sb_info *, struct page *);
05ca3632
JK
1794void write_node_page(unsigned int, struct f2fs_io_info *);
1795void write_data_page(struct dnode_of_data *, struct f2fs_io_info *);
1796void rewrite_data_page(struct f2fs_io_info *);
528e3459
CY
1797void f2fs_replace_block(struct f2fs_sb_info *, struct dnode_of_data *,
1798 block_t, block_t, unsigned char, bool);
bfad7c2d
JK
1799void allocate_data_block(struct f2fs_sb_info *, struct page *,
1800 block_t, block_t *, struct f2fs_summary *, int);
5514f0aa 1801void f2fs_wait_on_page_writeback(struct page *, enum page_type);
08b39fbd 1802void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info *, block_t);
39a53e0c
JK
1803void write_data_summaries(struct f2fs_sb_info *, block_t);
1804void write_node_summaries(struct f2fs_sb_info *, block_t);
1805int lookup_journal_in_cursum(struct f2fs_summary_block *,
1806 int, unsigned int, int);
4b2fecc8 1807void flush_sit_entries(struct f2fs_sb_info *, struct cp_control *);
39a53e0c 1808int build_segment_manager(struct f2fs_sb_info *);
39a53e0c 1809void destroy_segment_manager(struct f2fs_sb_info *);
7fd9e544
JK
1810int __init create_segment_manager_caches(void);
1811void destroy_segment_manager_caches(void);
39a53e0c
JK
1812
1813/*
1814 * checkpoint.c
1815 */
1816struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
1817struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
2b947003 1818struct page *get_tmp_page(struct f2fs_sb_info *, pgoff_t);
f0c9cada 1819bool is_valid_blkaddr(struct f2fs_sb_info *, block_t, int);
26879fb1 1820int ra_meta_pages(struct f2fs_sb_info *, block_t, int, int, bool);
635aee1f 1821void ra_meta_pages_cond(struct f2fs_sb_info *, pgoff_t);
39a53e0c 1822long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
fff04f90
JK
1823void add_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
1824void remove_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
6f12ac25 1825void release_dirty_inode(struct f2fs_sb_info *);
fff04f90 1826bool exist_written_data(struct f2fs_sb_info *, nid_t, int);
cbd56e7d
JK
1827int acquire_orphan_inode(struct f2fs_sb_info *);
1828void release_orphan_inode(struct f2fs_sb_info *);
39a53e0c
JK
1829void add_orphan_inode(struct f2fs_sb_info *, nid_t);
1830void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
8c14bfad 1831int recover_orphan_inodes(struct f2fs_sb_info *);
39a53e0c 1832int get_valid_checkpoint(struct f2fs_sb_info *);
a7ffdbe2 1833void update_dirty_page(struct inode *, struct page *);
5deb8267 1834void add_dirty_dir_inode(struct inode *);
39a53e0c
JK
1835void remove_dirty_dir_inode(struct inode *);
1836void sync_dirty_dir_inodes(struct f2fs_sb_info *);
75ab4cb8 1837void write_checkpoint(struct f2fs_sb_info *, struct cp_control *);
6451e041 1838void init_ino_entry_info(struct f2fs_sb_info *);
6e6093a8 1839int __init create_checkpoint_caches(void);
39a53e0c
JK
1840void destroy_checkpoint_caches(void);
1841
1842/*
1843 * data.c
1844 */
458e6197 1845void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int);
05ca3632
JK
1846int f2fs_submit_page_bio(struct f2fs_io_info *);
1847void f2fs_submit_page_mbio(struct f2fs_io_info *);
216a620a 1848void set_data_blkaddr(struct dnode_of_data *);
39a53e0c 1849int reserve_new_block(struct dnode_of_data *);
759af1c9 1850int f2fs_get_block(struct dnode_of_data *, pgoff_t);
b600965c 1851int f2fs_reserve_block(struct dnode_of_data *, pgoff_t);
a56c7c6f 1852struct page *get_read_data_page(struct inode *, pgoff_t, int, bool);
43f3eae1 1853struct page *find_data_page(struct inode *, pgoff_t);
a56c7c6f 1854struct page *get_lock_data_page(struct inode *, pgoff_t, bool);
64aa7ed9 1855struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
05ca3632 1856int do_write_data_page(struct f2fs_io_info *);
d323d005 1857int f2fs_map_blocks(struct inode *, struct f2fs_map_blocks *, int, int);
9ab70134 1858int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64);
487261f3
CY
1859void f2fs_invalidate_page(struct page *, unsigned int, unsigned int);
1860int f2fs_release_page(struct page *, gfp_t);
39a53e0c
JK
1861
1862/*
1863 * gc.c
1864 */
1865int start_gc_thread(struct f2fs_sb_info *);
1866void stop_gc_thread(struct f2fs_sb_info *);
de93653f 1867block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *);
d530d4d8 1868int f2fs_gc(struct f2fs_sb_info *, bool);
39a53e0c 1869void build_gc_manager(struct f2fs_sb_info *);
39a53e0c
JK
1870
1871/*
1872 * recovery.c
1873 */
6ead1142 1874int recover_fsync_data(struct f2fs_sb_info *);
39a53e0c
JK
1875bool space_for_roll_forward(struct f2fs_sb_info *);
1876
1877/*
1878 * debug.c
1879 */
1880#ifdef CONFIG_F2FS_STAT_FS
1881struct f2fs_stat_info {
1882 struct list_head stat_list;
1883 struct f2fs_sb_info *sbi;
39a53e0c
JK
1884 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
1885 int main_area_segs, main_area_sections, main_area_zones;
5b7ee374
CY
1886 unsigned long long hit_largest, hit_cached, hit_rbtree;
1887 unsigned long long hit_total, total_ext;
029e13cc 1888 int ext_tree, ext_node;
39a53e0c 1889 int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta;
dd4e4b59 1890 int nats, dirty_nats, sits, dirty_sits, fnids;
39a53e0c 1891 int total_count, utilization;
d5e8f6c9
CY
1892 int bg_gc, inmem_pages, wb_pages;
1893 int inline_xattr, inline_inode, inline_dir;
39a53e0c
JK
1894 unsigned int valid_count, valid_node_count, valid_inode_count;
1895 unsigned int bimodal, avg_vblocks;
1896 int util_free, util_valid, util_invalid;
1897 int rsvd_segs, overp_segs;
1898 int dirty_count, node_pages, meta_pages;
942e0be6 1899 int prefree_count, call_count, cp_count;
39a53e0c 1900 int tot_segs, node_segs, data_segs, free_segs, free_secs;
e1235983 1901 int bg_node_segs, bg_data_segs;
39a53e0c 1902 int tot_blks, data_blks, node_blks;
e1235983 1903 int bg_data_blks, bg_node_blks;
39a53e0c
JK
1904 int curseg[NR_CURSEG_TYPE];
1905 int cursec[NR_CURSEG_TYPE];
1906 int curzone[NR_CURSEG_TYPE];
1907
1908 unsigned int segment_count[2];
1909 unsigned int block_count[2];
b9a2c252 1910 unsigned int inplace_count;
9edcdabf 1911 unsigned long long base_mem, cache_mem, page_mem;
39a53e0c
JK
1912};
1913
963d4f7d
GZ
1914static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
1915{
6c311ec6 1916 return (struct f2fs_stat_info *)sbi->stat_info;
963d4f7d
GZ
1917}
1918
942e0be6 1919#define stat_inc_cp_count(si) ((si)->cp_count++)
dcdfff65
JK
1920#define stat_inc_call_count(si) ((si)->call_count++)
1921#define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1922#define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1923#define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
5b7ee374
CY
1924#define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext))
1925#define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree))
1926#define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest))
1927#define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached))
d5e8f6c9
CY
1928#define stat_inc_inline_xattr(inode) \
1929 do { \
1930 if (f2fs_has_inline_xattr(inode)) \
1931 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
1932 } while (0)
1933#define stat_dec_inline_xattr(inode) \
1934 do { \
1935 if (f2fs_has_inline_xattr(inode)) \
1936 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
1937 } while (0)
0dbdc2ae
JK
1938#define stat_inc_inline_inode(inode) \
1939 do { \
1940 if (f2fs_has_inline_data(inode)) \
03e14d52 1941 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
0dbdc2ae
JK
1942 } while (0)
1943#define stat_dec_inline_inode(inode) \
1944 do { \
1945 if (f2fs_has_inline_data(inode)) \
03e14d52 1946 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
0dbdc2ae 1947 } while (0)
3289c061
JK
1948#define stat_inc_inline_dir(inode) \
1949 do { \
1950 if (f2fs_has_inline_dentry(inode)) \
03e14d52 1951 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
3289c061
JK
1952 } while (0)
1953#define stat_dec_inline_dir(inode) \
1954 do { \
1955 if (f2fs_has_inline_dentry(inode)) \
03e14d52 1956 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
3289c061 1957 } while (0)
dcdfff65
JK
1958#define stat_inc_seg_type(sbi, curseg) \
1959 ((sbi)->segment_count[(curseg)->alloc_type]++)
1960#define stat_inc_block_count(sbi, curseg) \
1961 ((sbi)->block_count[(curseg)->alloc_type]++)
b9a2c252
CL
1962#define stat_inc_inplace_blocks(sbi) \
1963 (atomic_inc(&(sbi)->inplace_count))
e1235983 1964#define stat_inc_seg_count(sbi, type, gc_type) \
39a53e0c 1965 do { \
963d4f7d 1966 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
39a53e0c 1967 (si)->tot_segs++; \
e1235983 1968 if (type == SUM_TYPE_DATA) { \
39a53e0c 1969 si->data_segs++; \
e1235983
CL
1970 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
1971 } else { \
39a53e0c 1972 si->node_segs++; \
e1235983
CL
1973 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
1974 } \
39a53e0c
JK
1975 } while (0)
1976
1977#define stat_inc_tot_blk_count(si, blks) \
1978 (si->tot_blks += (blks))
1979
e1235983 1980#define stat_inc_data_blk_count(sbi, blks, gc_type) \
39a53e0c 1981 do { \
963d4f7d 1982 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
39a53e0c
JK
1983 stat_inc_tot_blk_count(si, blks); \
1984 si->data_blks += (blks); \
e1235983 1985 si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \
39a53e0c
JK
1986 } while (0)
1987
e1235983 1988#define stat_inc_node_blk_count(sbi, blks, gc_type) \
39a53e0c 1989 do { \
963d4f7d 1990 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
39a53e0c
JK
1991 stat_inc_tot_blk_count(si, blks); \
1992 si->node_blks += (blks); \
e1235983 1993 si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \
39a53e0c
JK
1994 } while (0)
1995
1996int f2fs_build_stats(struct f2fs_sb_info *);
1997void f2fs_destroy_stats(struct f2fs_sb_info *);
787c7b8c 1998int __init f2fs_create_root_stats(void);
4589d25d 1999void f2fs_destroy_root_stats(void);
39a53e0c 2000#else
942e0be6 2001#define stat_inc_cp_count(si)
39a53e0c 2002#define stat_inc_call_count(si)
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JK
2003#define stat_inc_bggc_count(si)
2004#define stat_inc_dirty_dir(sbi)
2005#define stat_dec_dirty_dir(sbi)
2006#define stat_inc_total_hit(sb)
029e13cc 2007#define stat_inc_rbtree_node_hit(sb)
91c481ff
CY
2008#define stat_inc_largest_node_hit(sbi)
2009#define stat_inc_cached_node_hit(sbi)
d5e8f6c9
CY
2010#define stat_inc_inline_xattr(inode)
2011#define stat_dec_inline_xattr(inode)
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JK
2012#define stat_inc_inline_inode(inode)
2013#define stat_dec_inline_inode(inode)
3289c061
JK
2014#define stat_inc_inline_dir(inode)
2015#define stat_dec_inline_dir(inode)
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2016#define stat_inc_seg_type(sbi, curseg)
2017#define stat_inc_block_count(sbi, curseg)
b9a2c252 2018#define stat_inc_inplace_blocks(sbi)
e1235983 2019#define stat_inc_seg_count(sbi, type, gc_type)
39a53e0c 2020#define stat_inc_tot_blk_count(si, blks)
e1235983
CL
2021#define stat_inc_data_blk_count(sbi, blks, gc_type)
2022#define stat_inc_node_blk_count(sbi, blks, gc_type)
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2023
2024static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
2025static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
787c7b8c 2026static inline int __init f2fs_create_root_stats(void) { return 0; }
4589d25d 2027static inline void f2fs_destroy_root_stats(void) { }
39a53e0c
JK
2028#endif
2029
2030extern const struct file_operations f2fs_dir_operations;
2031extern const struct file_operations f2fs_file_operations;
2032extern const struct inode_operations f2fs_file_inode_operations;
2033extern const struct address_space_operations f2fs_dblock_aops;
2034extern const struct address_space_operations f2fs_node_aops;
2035extern const struct address_space_operations f2fs_meta_aops;
2036extern const struct inode_operations f2fs_dir_inode_operations;
2037extern const struct inode_operations f2fs_symlink_inode_operations;
cbaf042a 2038extern const struct inode_operations f2fs_encrypted_symlink_inode_operations;
39a53e0c 2039extern const struct inode_operations f2fs_special_inode_operations;
29e7043f 2040extern struct kmem_cache *inode_entry_slab;
1001b347 2041
e18c65b2
HL
2042/*
2043 * inline.c
2044 */
01b960e9
JK
2045bool f2fs_may_inline_data(struct inode *);
2046bool f2fs_may_inline_dentry(struct inode *);
b3d208f9 2047void read_inline_data(struct page *, struct page *);
0bfcfcca 2048bool truncate_inline_inode(struct page *, u64);
e18c65b2 2049int f2fs_read_inline_data(struct inode *, struct page *);
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JK
2050int f2fs_convert_inline_page(struct dnode_of_data *, struct page *);
2051int f2fs_convert_inline_inode(struct inode *);
2052int f2fs_write_inline_data(struct inode *, struct page *);
0342fd30 2053bool recover_inline_data(struct inode *, struct page *);
6e22c691
JK
2054struct f2fs_dir_entry *find_in_inline_dir(struct inode *,
2055 struct f2fs_filename *, struct page **);
201a05be
CY
2056struct f2fs_dir_entry *f2fs_parent_inline_dir(struct inode *, struct page **);
2057int make_empty_inline_dir(struct inode *inode, struct inode *, struct page *);
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JK
2058int f2fs_add_inline_entry(struct inode *, const struct qstr *, struct inode *,
2059 nid_t, umode_t);
201a05be
CY
2060void f2fs_delete_inline_entry(struct f2fs_dir_entry *, struct page *,
2061 struct inode *, struct inode *);
2062bool f2fs_empty_inline_dir(struct inode *);
d8c6822a
JK
2063int f2fs_read_inline_dir(struct file *, struct dir_context *,
2064 struct f2fs_str *);
67f8cf3c
JK
2065int f2fs_inline_data_fiemap(struct inode *,
2066 struct fiemap_extent_info *, __u64, __u64);
cde4de12 2067
2658e50d
JK
2068/*
2069 * shrinker.c
2070 */
2071unsigned long f2fs_shrink_count(struct shrinker *, struct shrink_control *);
2072unsigned long f2fs_shrink_scan(struct shrinker *, struct shrink_control *);
2073void f2fs_join_shrinker(struct f2fs_sb_info *);
2074void f2fs_leave_shrinker(struct f2fs_sb_info *);
2075
a28ef1f5
CY
2076/*
2077 * extent_cache.c
2078 */
2079unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *, int);
2080void f2fs_drop_largest_extent(struct inode *, pgoff_t);
2081void f2fs_init_extent_tree(struct inode *, struct f2fs_extent *);
2082unsigned int f2fs_destroy_extent_node(struct inode *);
2083void f2fs_destroy_extent_tree(struct inode *);
2084bool f2fs_lookup_extent_cache(struct inode *, pgoff_t, struct extent_info *);
2085void f2fs_update_extent_cache(struct dnode_of_data *);
19b2c30d
CY
2086void f2fs_update_extent_cache_range(struct dnode_of_data *dn,
2087 pgoff_t, block_t, unsigned int);
a28ef1f5
CY
2088void init_extent_cache_info(struct f2fs_sb_info *);
2089int __init create_extent_cache(void);
2090void destroy_extent_cache(void);
2091
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2092/*
2093 * crypto support
2094 */
2095static inline int f2fs_encrypted_inode(struct inode *inode)
2096{
2097#ifdef CONFIG_F2FS_FS_ENCRYPTION
2098 return file_is_encrypt(inode);
2099#else
2100 return 0;
2101#endif
2102}
2103
2104static inline void f2fs_set_encrypted_inode(struct inode *inode)
2105{
2106#ifdef CONFIG_F2FS_FS_ENCRYPTION
2107 file_set_encrypt(inode);
2108#endif
2109}
2110
2111static inline bool f2fs_bio_encrypted(struct bio *bio)
2112{
2113#ifdef CONFIG_F2FS_FS_ENCRYPTION
2114 return unlikely(bio->bi_private != NULL);
2115#else
2116 return false;
2117#endif
2118}
2119
2120static inline int f2fs_sb_has_crypto(struct super_block *sb)
2121{
2122#ifdef CONFIG_F2FS_FS_ENCRYPTION
2123 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_ENCRYPT);
2124#else
2125 return 0;
2126#endif
2127}
f424f664 2128
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2129static inline bool f2fs_may_encrypt(struct inode *inode)
2130{
2131#ifdef CONFIG_F2FS_FS_ENCRYPTION
2132 mode_t mode = inode->i_mode;
2133
2134 return (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode));
2135#else
2136 return 0;
2137#endif
2138}
2139
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2140/* crypto_policy.c */
2141int f2fs_is_child_context_consistent_with_parent(struct inode *,
2142 struct inode *);
2143int f2fs_inherit_context(struct inode *, struct inode *, struct page *);
2144int f2fs_process_policy(const struct f2fs_encryption_policy *, struct inode *);
2145int f2fs_get_policy(struct inode *, struct f2fs_encryption_policy *);
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2146
2147/* crypt.c */
8bacf6de 2148extern struct kmem_cache *f2fs_crypt_info_cachep;
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2149bool f2fs_valid_contents_enc_mode(uint32_t);
2150uint32_t f2fs_validate_encryption_key_size(uint32_t, uint32_t);
2151struct f2fs_crypto_ctx *f2fs_get_crypto_ctx(struct inode *);
2152void f2fs_release_crypto_ctx(struct f2fs_crypto_ctx *);
2153struct page *f2fs_encrypt(struct inode *, struct page *);
2154int f2fs_decrypt(struct f2fs_crypto_ctx *, struct page *);
2155int f2fs_decrypt_one(struct inode *, struct page *);
2156void f2fs_end_io_crypto_work(struct f2fs_crypto_ctx *, struct bio *);
2157
0adda907 2158/* crypto_key.c */
26bf3dc7 2159void f2fs_free_encryption_info(struct inode *, struct f2fs_crypt_info *);
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2160int _f2fs_get_encryption_info(struct inode *inode);
2161
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2162/* crypto_fname.c */
2163bool f2fs_valid_filenames_enc_mode(uint32_t);
2164u32 f2fs_fname_crypto_round_up(u32, u32);
2165int f2fs_fname_crypto_alloc_buffer(struct inode *, u32, struct f2fs_str *);
2166int f2fs_fname_disk_to_usr(struct inode *, f2fs_hash_t *,
2167 const struct f2fs_str *, struct f2fs_str *);
2168int f2fs_fname_usr_to_disk(struct inode *, const struct qstr *,
2169 struct f2fs_str *);
2170
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2171#ifdef CONFIG_F2FS_FS_ENCRYPTION
2172void f2fs_restore_and_release_control_page(struct page **);
2173void f2fs_restore_control_page(struct page *);
2174
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2175int __init f2fs_init_crypto(void);
2176int f2fs_crypto_initialize(void);
57e5055b 2177void f2fs_exit_crypto(void);
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2178
2179int f2fs_has_encryption_key(struct inode *);
2180
2181static inline int f2fs_get_encryption_info(struct inode *inode)
2182{
2183 struct f2fs_crypt_info *ci = F2FS_I(inode)->i_crypt_info;
2184
2185 if (!ci ||
2186 (ci->ci_keyring_key &&
2187 (ci->ci_keyring_key->flags & ((1 << KEY_FLAG_INVALIDATED) |
2188 (1 << KEY_FLAG_REVOKED) |
2189 (1 << KEY_FLAG_DEAD)))))
2190 return _f2fs_get_encryption_info(inode);
2191 return 0;
2192}
6b3bd08f 2193
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2194void f2fs_fname_crypto_free_buffer(struct f2fs_str *);
2195int f2fs_fname_setup_filename(struct inode *, const struct qstr *,
2196 int lookup, struct f2fs_filename *);
2197void f2fs_fname_free_filename(struct f2fs_filename *);
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2198#else
2199static inline void f2fs_restore_and_release_control_page(struct page **p) { }
2200static inline void f2fs_restore_control_page(struct page *p) { }
2201
cfc4d971 2202static inline int __init f2fs_init_crypto(void) { return 0; }
57e5055b 2203static inline void f2fs_exit_crypto(void) { }
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2204
2205static inline int f2fs_has_encryption_key(struct inode *i) { return 0; }
2206static inline int f2fs_get_encryption_info(struct inode *i) { return 0; }
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2207static inline void f2fs_fname_crypto_free_buffer(struct f2fs_str *p) { }
2208
2209static inline int f2fs_fname_setup_filename(struct inode *dir,
2210 const struct qstr *iname,
2211 int lookup, struct f2fs_filename *fname)
2212{
2213 memset(fname, 0, sizeof(struct f2fs_filename));
2214 fname->usr_fname = iname;
2215 fname->disk_name.name = (unsigned char *)iname->name;
2216 fname->disk_name.len = iname->len;
2217 return 0;
2218}
2219
2220static inline void f2fs_fname_free_filename(struct f2fs_filename *fname) { }
57e5055b 2221#endif
39a53e0c 2222#endif