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