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1 | /* | |
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> | |
17 | #include <linux/slab.h> | |
18 | #include <linux/crc32.h> | |
19 | #include <linux/magic.h> | |
20 | #include <linux/kobject.h> | |
21 | #include <linux/sched.h> | |
22 | #include <linux/vmalloc.h> | |
23 | #include <linux/bio.h> | |
24 | #include <linux/blkdev.h> | |
25 | ||
26 | #ifdef CONFIG_F2FS_CHECK_FS | |
27 | #define f2fs_bug_on(sbi, condition) BUG_ON(condition) | |
28 | #define f2fs_down_write(x, y) down_write_nest_lock(x, y) | |
29 | #else | |
30 | #define f2fs_bug_on(sbi, condition) \ | |
31 | do { \ | |
32 | if (unlikely(condition)) { \ | |
33 | WARN_ON(1); \ | |
34 | set_sbi_flag(sbi, SBI_NEED_FSCK); \ | |
35 | } \ | |
36 | } while (0) | |
37 | #define f2fs_down_write(x, y) down_write(x) | |
38 | #endif | |
39 | ||
40 | /* | |
41 | * For mount options | |
42 | */ | |
43 | #define F2FS_MOUNT_BG_GC 0x00000001 | |
44 | #define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002 | |
45 | #define F2FS_MOUNT_DISCARD 0x00000004 | |
46 | #define F2FS_MOUNT_NOHEAP 0x00000008 | |
47 | #define F2FS_MOUNT_XATTR_USER 0x00000010 | |
48 | #define F2FS_MOUNT_POSIX_ACL 0x00000020 | |
49 | #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040 | |
50 | #define F2FS_MOUNT_INLINE_XATTR 0x00000080 | |
51 | #define F2FS_MOUNT_INLINE_DATA 0x00000100 | |
52 | #define F2FS_MOUNT_INLINE_DENTRY 0x00000200 | |
53 | #define F2FS_MOUNT_FLUSH_MERGE 0x00000400 | |
54 | #define F2FS_MOUNT_NOBARRIER 0x00000800 | |
55 | #define F2FS_MOUNT_FASTBOOT 0x00001000 | |
56 | #define F2FS_MOUNT_EXTENT_CACHE 0x00002000 | |
57 | #define F2FS_MOUNT_FORCE_FG_GC 0x00004000 | |
58 | #define F2FS_MOUNT_DATA_FLUSH 0x00008000 | |
59 | ||
60 | #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option) | |
61 | #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option) | |
62 | #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option) | |
63 | ||
64 | #define ver_after(a, b) (typecheck(unsigned long long, a) && \ | |
65 | typecheck(unsigned long long, b) && \ | |
66 | ((long long)((a) - (b)) > 0)) | |
67 | ||
68 | typedef u32 block_t; /* | |
69 | * should not change u32, since it is the on-disk block | |
70 | * address format, __le32. | |
71 | */ | |
72 | typedef u32 nid_t; | |
73 | ||
74 | struct f2fs_mount_info { | |
75 | unsigned int opt; | |
76 | }; | |
77 | ||
78 | #define F2FS_FEATURE_ENCRYPT 0x0001 | |
79 | ||
80 | #define F2FS_HAS_FEATURE(sb, mask) \ | |
81 | ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0) | |
82 | #define F2FS_SET_FEATURE(sb, mask) \ | |
83 | F2FS_SB(sb)->raw_super->feature |= cpu_to_le32(mask) | |
84 | #define F2FS_CLEAR_FEATURE(sb, mask) \ | |
85 | F2FS_SB(sb)->raw_super->feature &= ~cpu_to_le32(mask) | |
86 | ||
87 | #define CRCPOLY_LE 0xedb88320 | |
88 | ||
89 | static inline __u32 f2fs_crc32(void *buf, size_t len) | |
90 | { | |
91 | unsigned char *p = (unsigned char *)buf; | |
92 | __u32 crc = F2FS_SUPER_MAGIC; | |
93 | int i; | |
94 | ||
95 | while (len--) { | |
96 | crc ^= *p++; | |
97 | for (i = 0; i < 8; i++) | |
98 | crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0); | |
99 | } | |
100 | return crc; | |
101 | } | |
102 | ||
103 | static inline bool f2fs_crc_valid(__u32 blk_crc, void *buf, size_t buf_size) | |
104 | { | |
105 | return f2fs_crc32(buf, buf_size) == blk_crc; | |
106 | } | |
107 | ||
108 | /* | |
109 | * For checkpoint manager | |
110 | */ | |
111 | enum { | |
112 | NAT_BITMAP, | |
113 | SIT_BITMAP | |
114 | }; | |
115 | ||
116 | enum { | |
117 | CP_UMOUNT, | |
118 | CP_FASTBOOT, | |
119 | CP_SYNC, | |
120 | CP_RECOVERY, | |
121 | CP_DISCARD, | |
122 | }; | |
123 | ||
124 | #define DEF_BATCHED_TRIM_SECTIONS 32 | |
125 | #define BATCHED_TRIM_SEGMENTS(sbi) \ | |
126 | (SM_I(sbi)->trim_sections * (sbi)->segs_per_sec) | |
127 | #define BATCHED_TRIM_BLOCKS(sbi) \ | |
128 | (BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg) | |
129 | #define DEF_CP_INTERVAL 60 /* 60 secs */ | |
130 | #define DEF_IDLE_INTERVAL 120 /* 2 mins */ | |
131 | ||
132 | struct cp_control { | |
133 | int reason; | |
134 | __u64 trim_start; | |
135 | __u64 trim_end; | |
136 | __u64 trim_minlen; | |
137 | __u64 trimmed; | |
138 | }; | |
139 | ||
140 | /* | |
141 | * For CP/NAT/SIT/SSA readahead | |
142 | */ | |
143 | enum { | |
144 | META_CP, | |
145 | META_NAT, | |
146 | META_SIT, | |
147 | META_SSA, | |
148 | META_POR, | |
149 | }; | |
150 | ||
151 | /* for the list of ino */ | |
152 | enum { | |
153 | ORPHAN_INO, /* for orphan ino list */ | |
154 | APPEND_INO, /* for append ino list */ | |
155 | UPDATE_INO, /* for update ino list */ | |
156 | MAX_INO_ENTRY, /* max. list */ | |
157 | }; | |
158 | ||
159 | struct ino_entry { | |
160 | struct list_head list; /* list head */ | |
161 | nid_t ino; /* inode number */ | |
162 | }; | |
163 | ||
164 | /* for the list of inodes to be GCed */ | |
165 | struct inode_entry { | |
166 | struct list_head list; /* list head */ | |
167 | struct inode *inode; /* vfs inode pointer */ | |
168 | }; | |
169 | ||
170 | /* for the list of blockaddresses to be discarded */ | |
171 | struct discard_entry { | |
172 | struct list_head list; /* list head */ | |
173 | block_t blkaddr; /* block address to be discarded */ | |
174 | int len; /* # of consecutive blocks of the discard */ | |
175 | }; | |
176 | ||
177 | /* for the list of fsync inodes, used only during recovery */ | |
178 | struct fsync_inode_entry { | |
179 | struct list_head list; /* list head */ | |
180 | struct inode *inode; /* vfs inode pointer */ | |
181 | block_t blkaddr; /* block address locating the last fsync */ | |
182 | block_t last_dentry; /* block address locating the last dentry */ | |
183 | block_t last_inode; /* block address locating the last inode */ | |
184 | }; | |
185 | ||
186 | #define nats_in_cursum(jnl) (le16_to_cpu(jnl->n_nats)) | |
187 | #define sits_in_cursum(jnl) (le16_to_cpu(jnl->n_sits)) | |
188 | ||
189 | #define nat_in_journal(jnl, i) (jnl->nat_j.entries[i].ne) | |
190 | #define nid_in_journal(jnl, i) (jnl->nat_j.entries[i].nid) | |
191 | #define sit_in_journal(jnl, i) (jnl->sit_j.entries[i].se) | |
192 | #define segno_in_journal(jnl, i) (jnl->sit_j.entries[i].segno) | |
193 | ||
194 | #define MAX_NAT_JENTRIES(jnl) (NAT_JOURNAL_ENTRIES - nats_in_cursum(jnl)) | |
195 | #define MAX_SIT_JENTRIES(jnl) (SIT_JOURNAL_ENTRIES - sits_in_cursum(jnl)) | |
196 | ||
197 | static inline int update_nats_in_cursum(struct f2fs_journal *journal, int i) | |
198 | { | |
199 | int before = nats_in_cursum(journal); | |
200 | journal->n_nats = cpu_to_le16(before + i); | |
201 | return before; | |
202 | } | |
203 | ||
204 | static inline int update_sits_in_cursum(struct f2fs_journal *journal, int i) | |
205 | { | |
206 | int before = sits_in_cursum(journal); | |
207 | journal->n_sits = cpu_to_le16(before + i); | |
208 | return before; | |
209 | } | |
210 | ||
211 | static inline bool __has_cursum_space(struct f2fs_journal *journal, | |
212 | int size, int type) | |
213 | { | |
214 | if (type == NAT_JOURNAL) | |
215 | return size <= MAX_NAT_JENTRIES(journal); | |
216 | return size <= MAX_SIT_JENTRIES(journal); | |
217 | } | |
218 | ||
219 | /* | |
220 | * ioctl commands | |
221 | */ | |
222 | #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS | |
223 | #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS | |
224 | #define F2FS_IOC_GETVERSION FS_IOC_GETVERSION | |
225 | ||
226 | #define F2FS_IOCTL_MAGIC 0xf5 | |
227 | #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1) | |
228 | #define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2) | |
229 | #define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3) | |
230 | #define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4) | |
231 | #define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5) | |
232 | #define F2FS_IOC_GARBAGE_COLLECT _IO(F2FS_IOCTL_MAGIC, 6) | |
233 | #define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7) | |
234 | #define F2FS_IOC_DEFRAGMENT _IO(F2FS_IOCTL_MAGIC, 8) | |
235 | ||
236 | #define F2FS_IOC_SET_ENCRYPTION_POLICY \ | |
237 | _IOR('f', 19, struct f2fs_encryption_policy) | |
238 | #define F2FS_IOC_GET_ENCRYPTION_PWSALT \ | |
239 | _IOW('f', 20, __u8[16]) | |
240 | #define F2FS_IOC_GET_ENCRYPTION_POLICY \ | |
241 | _IOW('f', 21, struct f2fs_encryption_policy) | |
242 | ||
243 | /* | |
244 | * should be same as XFS_IOC_GOINGDOWN. | |
245 | * Flags for going down operation used by FS_IOC_GOINGDOWN | |
246 | */ | |
247 | #define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */ | |
248 | #define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */ | |
249 | #define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */ | |
250 | #define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */ | |
251 | #define F2FS_GOING_DOWN_METAFLUSH 0x3 /* going down with meta flush */ | |
252 | ||
253 | #if defined(__KERNEL__) && defined(CONFIG_COMPAT) | |
254 | /* | |
255 | * ioctl commands in 32 bit emulation | |
256 | */ | |
257 | #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS | |
258 | #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS | |
259 | #define F2FS_IOC32_GETVERSION FS_IOC32_GETVERSION | |
260 | #endif | |
261 | ||
262 | struct f2fs_defragment { | |
263 | u64 start; | |
264 | u64 len; | |
265 | }; | |
266 | ||
267 | /* | |
268 | * For INODE and NODE manager | |
269 | */ | |
270 | /* for directory operations */ | |
271 | struct f2fs_str { | |
272 | unsigned char *name; | |
273 | u32 len; | |
274 | }; | |
275 | ||
276 | struct f2fs_filename { | |
277 | const struct qstr *usr_fname; | |
278 | struct f2fs_str disk_name; | |
279 | f2fs_hash_t hash; | |
280 | #ifdef CONFIG_F2FS_FS_ENCRYPTION | |
281 | struct f2fs_str crypto_buf; | |
282 | #endif | |
283 | }; | |
284 | ||
285 | #define FSTR_INIT(n, l) { .name = n, .len = l } | |
286 | #define FSTR_TO_QSTR(f) QSTR_INIT((f)->name, (f)->len) | |
287 | #define fname_name(p) ((p)->disk_name.name) | |
288 | #define fname_len(p) ((p)->disk_name.len) | |
289 | ||
290 | struct f2fs_dentry_ptr { | |
291 | struct inode *inode; | |
292 | const void *bitmap; | |
293 | struct f2fs_dir_entry *dentry; | |
294 | __u8 (*filename)[F2FS_SLOT_LEN]; | |
295 | int max; | |
296 | }; | |
297 | ||
298 | static inline void make_dentry_ptr(struct inode *inode, | |
299 | struct f2fs_dentry_ptr *d, void *src, int type) | |
300 | { | |
301 | d->inode = inode; | |
302 | ||
303 | if (type == 1) { | |
304 | struct f2fs_dentry_block *t = (struct f2fs_dentry_block *)src; | |
305 | d->max = NR_DENTRY_IN_BLOCK; | |
306 | d->bitmap = &t->dentry_bitmap; | |
307 | d->dentry = t->dentry; | |
308 | d->filename = t->filename; | |
309 | } else { | |
310 | struct f2fs_inline_dentry *t = (struct f2fs_inline_dentry *)src; | |
311 | d->max = NR_INLINE_DENTRY; | |
312 | d->bitmap = &t->dentry_bitmap; | |
313 | d->dentry = t->dentry; | |
314 | d->filename = t->filename; | |
315 | } | |
316 | } | |
317 | ||
318 | /* | |
319 | * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1 | |
320 | * as its node offset to distinguish from index node blocks. | |
321 | * But some bits are used to mark the node block. | |
322 | */ | |
323 | #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \ | |
324 | >> OFFSET_BIT_SHIFT) | |
325 | enum { | |
326 | ALLOC_NODE, /* allocate a new node page if needed */ | |
327 | LOOKUP_NODE, /* look up a node without readahead */ | |
328 | LOOKUP_NODE_RA, /* | |
329 | * look up a node with readahead called | |
330 | * by get_data_block. | |
331 | */ | |
332 | }; | |
333 | ||
334 | #define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */ | |
335 | ||
336 | #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */ | |
337 | ||
338 | /* vector size for gang look-up from extent cache that consists of radix tree */ | |
339 | #define EXT_TREE_VEC_SIZE 64 | |
340 | ||
341 | /* for in-memory extent cache entry */ | |
342 | #define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */ | |
343 | ||
344 | /* number of extent info in extent cache we try to shrink */ | |
345 | #define EXTENT_CACHE_SHRINK_NUMBER 128 | |
346 | ||
347 | struct extent_info { | |
348 | unsigned int fofs; /* start offset in a file */ | |
349 | u32 blk; /* start block address of the extent */ | |
350 | unsigned int len; /* length of the extent */ | |
351 | }; | |
352 | ||
353 | struct extent_node { | |
354 | struct rb_node rb_node; /* rb node located in rb-tree */ | |
355 | struct list_head list; /* node in global extent list of sbi */ | |
356 | struct extent_info ei; /* extent info */ | |
357 | struct extent_tree *et; /* extent tree pointer */ | |
358 | }; | |
359 | ||
360 | struct extent_tree { | |
361 | nid_t ino; /* inode number */ | |
362 | struct rb_root root; /* root of extent info rb-tree */ | |
363 | struct extent_node *cached_en; /* recently accessed extent node */ | |
364 | struct extent_info largest; /* largested extent info */ | |
365 | struct list_head list; /* to be used by sbi->zombie_list */ | |
366 | rwlock_t lock; /* protect extent info rb-tree */ | |
367 | atomic_t node_cnt; /* # of extent node in rb-tree*/ | |
368 | }; | |
369 | ||
370 | /* | |
371 | * This structure is taken from ext4_map_blocks. | |
372 | * | |
373 | * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks(). | |
374 | */ | |
375 | #define F2FS_MAP_NEW (1 << BH_New) | |
376 | #define F2FS_MAP_MAPPED (1 << BH_Mapped) | |
377 | #define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten) | |
378 | #define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\ | |
379 | F2FS_MAP_UNWRITTEN) | |
380 | ||
381 | struct f2fs_map_blocks { | |
382 | block_t m_pblk; | |
383 | block_t m_lblk; | |
384 | unsigned int m_len; | |
385 | unsigned int m_flags; | |
386 | pgoff_t *m_next_pgofs; /* point next possible non-hole pgofs */ | |
387 | }; | |
388 | ||
389 | /* for flag in get_data_block */ | |
390 | #define F2FS_GET_BLOCK_READ 0 | |
391 | #define F2FS_GET_BLOCK_DIO 1 | |
392 | #define F2FS_GET_BLOCK_FIEMAP 2 | |
393 | #define F2FS_GET_BLOCK_BMAP 3 | |
394 | #define F2FS_GET_BLOCK_PRE_DIO 4 | |
395 | #define F2FS_GET_BLOCK_PRE_AIO 5 | |
396 | ||
397 | /* | |
398 | * i_advise uses FADVISE_XXX_BIT. We can add additional hints later. | |
399 | */ | |
400 | #define FADVISE_COLD_BIT 0x01 | |
401 | #define FADVISE_LOST_PINO_BIT 0x02 | |
402 | #define FADVISE_ENCRYPT_BIT 0x04 | |
403 | #define FADVISE_ENC_NAME_BIT 0x08 | |
404 | ||
405 | #define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT) | |
406 | #define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT) | |
407 | #define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT) | |
408 | #define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT) | |
409 | #define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT) | |
410 | #define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT) | |
411 | #define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT) | |
412 | #define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT) | |
413 | #define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT) | |
414 | #define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT) | |
415 | #define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT) | |
416 | ||
417 | /* Encryption algorithms */ | |
418 | #define F2FS_ENCRYPTION_MODE_INVALID 0 | |
419 | #define F2FS_ENCRYPTION_MODE_AES_256_XTS 1 | |
420 | #define F2FS_ENCRYPTION_MODE_AES_256_GCM 2 | |
421 | #define F2FS_ENCRYPTION_MODE_AES_256_CBC 3 | |
422 | #define F2FS_ENCRYPTION_MODE_AES_256_CTS 4 | |
423 | ||
424 | #include "f2fs_crypto.h" | |
425 | ||
426 | #define DEF_DIR_LEVEL 0 | |
427 | ||
428 | struct f2fs_inode_info { | |
429 | struct inode vfs_inode; /* serve a vfs inode */ | |
430 | unsigned long i_flags; /* keep an inode flags for ioctl */ | |
431 | unsigned char i_advise; /* use to give file attribute hints */ | |
432 | unsigned char i_dir_level; /* use for dentry level for large dir */ | |
433 | unsigned int i_current_depth; /* use only in directory structure */ | |
434 | unsigned int i_pino; /* parent inode number */ | |
435 | umode_t i_acl_mode; /* keep file acl mode temporarily */ | |
436 | ||
437 | /* Use below internally in f2fs*/ | |
438 | unsigned long flags; /* use to pass per-file flags */ | |
439 | struct rw_semaphore i_sem; /* protect fi info */ | |
440 | atomic_t dirty_pages; /* # of dirty pages */ | |
441 | f2fs_hash_t chash; /* hash value of given file name */ | |
442 | unsigned int clevel; /* maximum level of given file name */ | |
443 | nid_t i_xattr_nid; /* node id that contains xattrs */ | |
444 | unsigned long long xattr_ver; /* cp version of xattr modification */ | |
445 | ||
446 | struct list_head dirty_list; /* linked in global dirty list */ | |
447 | struct list_head inmem_pages; /* inmemory pages managed by f2fs */ | |
448 | struct mutex inmem_lock; /* lock for inmemory pages */ | |
449 | ||
450 | struct extent_tree *extent_tree; /* cached extent_tree entry */ | |
451 | ||
452 | #ifdef CONFIG_F2FS_FS_ENCRYPTION | |
453 | /* Encryption params */ | |
454 | struct f2fs_crypt_info *i_crypt_info; | |
455 | #endif | |
456 | }; | |
457 | ||
458 | static inline void get_extent_info(struct extent_info *ext, | |
459 | struct f2fs_extent i_ext) | |
460 | { | |
461 | ext->fofs = le32_to_cpu(i_ext.fofs); | |
462 | ext->blk = le32_to_cpu(i_ext.blk); | |
463 | ext->len = le32_to_cpu(i_ext.len); | |
464 | } | |
465 | ||
466 | static inline void set_raw_extent(struct extent_info *ext, | |
467 | struct f2fs_extent *i_ext) | |
468 | { | |
469 | i_ext->fofs = cpu_to_le32(ext->fofs); | |
470 | i_ext->blk = cpu_to_le32(ext->blk); | |
471 | i_ext->len = cpu_to_le32(ext->len); | |
472 | } | |
473 | ||
474 | static inline void set_extent_info(struct extent_info *ei, unsigned int fofs, | |
475 | u32 blk, unsigned int len) | |
476 | { | |
477 | ei->fofs = fofs; | |
478 | ei->blk = blk; | |
479 | ei->len = len; | |
480 | } | |
481 | ||
482 | static inline bool __is_extent_same(struct extent_info *ei1, | |
483 | struct extent_info *ei2) | |
484 | { | |
485 | return (ei1->fofs == ei2->fofs && ei1->blk == ei2->blk && | |
486 | ei1->len == ei2->len); | |
487 | } | |
488 | ||
489 | static inline bool __is_extent_mergeable(struct extent_info *back, | |
490 | struct extent_info *front) | |
491 | { | |
492 | return (back->fofs + back->len == front->fofs && | |
493 | back->blk + back->len == front->blk); | |
494 | } | |
495 | ||
496 | static inline bool __is_back_mergeable(struct extent_info *cur, | |
497 | struct extent_info *back) | |
498 | { | |
499 | return __is_extent_mergeable(back, cur); | |
500 | } | |
501 | ||
502 | static inline bool __is_front_mergeable(struct extent_info *cur, | |
503 | struct extent_info *front) | |
504 | { | |
505 | return __is_extent_mergeable(cur, front); | |
506 | } | |
507 | ||
508 | static inline void __try_update_largest_extent(struct extent_tree *et, | |
509 | struct extent_node *en) | |
510 | { | |
511 | if (en->ei.len > et->largest.len) | |
512 | et->largest = en->ei; | |
513 | } | |
514 | ||
515 | struct f2fs_nm_info { | |
516 | block_t nat_blkaddr; /* base disk address of NAT */ | |
517 | nid_t max_nid; /* maximum possible node ids */ | |
518 | nid_t available_nids; /* maximum available node ids */ | |
519 | nid_t next_scan_nid; /* the next nid to be scanned */ | |
520 | unsigned int ram_thresh; /* control the memory footprint */ | |
521 | unsigned int ra_nid_pages; /* # of nid pages to be readaheaded */ | |
522 | unsigned int dirty_nats_ratio; /* control dirty nats ratio threshold */ | |
523 | ||
524 | /* NAT cache management */ | |
525 | struct radix_tree_root nat_root;/* root of the nat entry cache */ | |
526 | struct radix_tree_root nat_set_root;/* root of the nat set cache */ | |
527 | struct rw_semaphore nat_tree_lock; /* protect nat_tree_lock */ | |
528 | struct list_head nat_entries; /* cached nat entry list (clean) */ | |
529 | unsigned int nat_cnt; /* the # of cached nat entries */ | |
530 | unsigned int dirty_nat_cnt; /* total num of nat entries in set */ | |
531 | ||
532 | /* free node ids management */ | |
533 | struct radix_tree_root free_nid_root;/* root of the free_nid cache */ | |
534 | struct list_head free_nid_list; /* a list for free nids */ | |
535 | spinlock_t free_nid_list_lock; /* protect free nid list */ | |
536 | unsigned int fcnt; /* the number of free node id */ | |
537 | struct mutex build_lock; /* lock for build free nids */ | |
538 | ||
539 | /* for checkpoint */ | |
540 | char *nat_bitmap; /* NAT bitmap pointer */ | |
541 | int bitmap_size; /* bitmap size */ | |
542 | }; | |
543 | ||
544 | /* | |
545 | * this structure is used as one of function parameters. | |
546 | * all the information are dedicated to a given direct node block determined | |
547 | * by the data offset in a file. | |
548 | */ | |
549 | struct dnode_of_data { | |
550 | struct inode *inode; /* vfs inode pointer */ | |
551 | struct page *inode_page; /* its inode page, NULL is possible */ | |
552 | struct page *node_page; /* cached direct node page */ | |
553 | nid_t nid; /* node id of the direct node block */ | |
554 | unsigned int ofs_in_node; /* data offset in the node page */ | |
555 | bool inode_page_locked; /* inode page is locked or not */ | |
556 | bool node_changed; /* is node block changed */ | |
557 | char cur_level; /* level of hole node page */ | |
558 | char max_level; /* level of current page located */ | |
559 | block_t data_blkaddr; /* block address of the node block */ | |
560 | }; | |
561 | ||
562 | static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode, | |
563 | struct page *ipage, struct page *npage, nid_t nid) | |
564 | { | |
565 | memset(dn, 0, sizeof(*dn)); | |
566 | dn->inode = inode; | |
567 | dn->inode_page = ipage; | |
568 | dn->node_page = npage; | |
569 | dn->nid = nid; | |
570 | } | |
571 | ||
572 | /* | |
573 | * For SIT manager | |
574 | * | |
575 | * By default, there are 6 active log areas across the whole main area. | |
576 | * When considering hot and cold data separation to reduce cleaning overhead, | |
577 | * we split 3 for data logs and 3 for node logs as hot, warm, and cold types, | |
578 | * respectively. | |
579 | * In the current design, you should not change the numbers intentionally. | |
580 | * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6 | |
581 | * logs individually according to the underlying devices. (default: 6) | |
582 | * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for | |
583 | * data and 8 for node logs. | |
584 | */ | |
585 | #define NR_CURSEG_DATA_TYPE (3) | |
586 | #define NR_CURSEG_NODE_TYPE (3) | |
587 | #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE) | |
588 | ||
589 | enum { | |
590 | CURSEG_HOT_DATA = 0, /* directory entry blocks */ | |
591 | CURSEG_WARM_DATA, /* data blocks */ | |
592 | CURSEG_COLD_DATA, /* multimedia or GCed data blocks */ | |
593 | CURSEG_HOT_NODE, /* direct node blocks of directory files */ | |
594 | CURSEG_WARM_NODE, /* direct node blocks of normal files */ | |
595 | CURSEG_COLD_NODE, /* indirect node blocks */ | |
596 | NO_CHECK_TYPE, | |
597 | CURSEG_DIRECT_IO, /* to use for the direct IO path */ | |
598 | }; | |
599 | ||
600 | struct flush_cmd { | |
601 | struct completion wait; | |
602 | struct llist_node llnode; | |
603 | int ret; | |
604 | }; | |
605 | ||
606 | struct flush_cmd_control { | |
607 | struct task_struct *f2fs_issue_flush; /* flush thread */ | |
608 | wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */ | |
609 | struct llist_head issue_list; /* list for command issue */ | |
610 | struct llist_node *dispatch_list; /* list for command dispatch */ | |
611 | }; | |
612 | ||
613 | struct f2fs_sm_info { | |
614 | struct sit_info *sit_info; /* whole segment information */ | |
615 | struct free_segmap_info *free_info; /* free segment information */ | |
616 | struct dirty_seglist_info *dirty_info; /* dirty segment information */ | |
617 | struct curseg_info *curseg_array; /* active segment information */ | |
618 | ||
619 | block_t seg0_blkaddr; /* block address of 0'th segment */ | |
620 | block_t main_blkaddr; /* start block address of main area */ | |
621 | block_t ssa_blkaddr; /* start block address of SSA area */ | |
622 | ||
623 | unsigned int segment_count; /* total # of segments */ | |
624 | unsigned int main_segments; /* # of segments in main area */ | |
625 | unsigned int reserved_segments; /* # of reserved segments */ | |
626 | unsigned int ovp_segments; /* # of overprovision segments */ | |
627 | ||
628 | /* a threshold to reclaim prefree segments */ | |
629 | unsigned int rec_prefree_segments; | |
630 | ||
631 | /* for small discard management */ | |
632 | struct list_head discard_list; /* 4KB discard list */ | |
633 | int nr_discards; /* # of discards in the list */ | |
634 | int max_discards; /* max. discards to be issued */ | |
635 | ||
636 | /* for batched trimming */ | |
637 | unsigned int trim_sections; /* # of sections to trim */ | |
638 | ||
639 | struct list_head sit_entry_set; /* sit entry set list */ | |
640 | ||
641 | unsigned int ipu_policy; /* in-place-update policy */ | |
642 | unsigned int min_ipu_util; /* in-place-update threshold */ | |
643 | unsigned int min_fsync_blocks; /* threshold for fsync */ | |
644 | ||
645 | /* for flush command control */ | |
646 | struct flush_cmd_control *cmd_control_info; | |
647 | ||
648 | }; | |
649 | ||
650 | /* | |
651 | * For superblock | |
652 | */ | |
653 | /* | |
654 | * COUNT_TYPE for monitoring | |
655 | * | |
656 | * f2fs monitors the number of several block types such as on-writeback, | |
657 | * dirty dentry blocks, dirty node blocks, and dirty meta blocks. | |
658 | */ | |
659 | enum count_type { | |
660 | F2FS_WRITEBACK, | |
661 | F2FS_DIRTY_DENTS, | |
662 | F2FS_DIRTY_DATA, | |
663 | F2FS_DIRTY_NODES, | |
664 | F2FS_DIRTY_META, | |
665 | F2FS_INMEM_PAGES, | |
666 | NR_COUNT_TYPE, | |
667 | }; | |
668 | ||
669 | /* | |
670 | * The below are the page types of bios used in submit_bio(). | |
671 | * The available types are: | |
672 | * DATA User data pages. It operates as async mode. | |
673 | * NODE Node pages. It operates as async mode. | |
674 | * META FS metadata pages such as SIT, NAT, CP. | |
675 | * NR_PAGE_TYPE The number of page types. | |
676 | * META_FLUSH Make sure the previous pages are written | |
677 | * with waiting the bio's completion | |
678 | * ... Only can be used with META. | |
679 | */ | |
680 | #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type)) | |
681 | enum page_type { | |
682 | DATA, | |
683 | NODE, | |
684 | META, | |
685 | NR_PAGE_TYPE, | |
686 | META_FLUSH, | |
687 | INMEM, /* the below types are used by tracepoints only. */ | |
688 | INMEM_DROP, | |
689 | INMEM_REVOKE, | |
690 | IPU, | |
691 | OPU, | |
692 | }; | |
693 | ||
694 | struct f2fs_io_info { | |
695 | struct f2fs_sb_info *sbi; /* f2fs_sb_info pointer */ | |
696 | enum page_type type; /* contains DATA/NODE/META/META_FLUSH */ | |
697 | int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */ | |
698 | block_t new_blkaddr; /* new block address to be written */ | |
699 | block_t old_blkaddr; /* old block address before Cow */ | |
700 | struct page *page; /* page to be written */ | |
701 | struct page *encrypted_page; /* encrypted page */ | |
702 | }; | |
703 | ||
704 | #define is_read_io(rw) (((rw) & 1) == READ) | |
705 | struct f2fs_bio_info { | |
706 | struct f2fs_sb_info *sbi; /* f2fs superblock */ | |
707 | struct bio *bio; /* bios to merge */ | |
708 | sector_t last_block_in_bio; /* last block number */ | |
709 | struct f2fs_io_info fio; /* store buffered io info. */ | |
710 | struct rw_semaphore io_rwsem; /* blocking op for bio */ | |
711 | }; | |
712 | ||
713 | enum inode_type { | |
714 | DIR_INODE, /* for dirty dir inode */ | |
715 | FILE_INODE, /* for dirty regular/symlink inode */ | |
716 | NR_INODE_TYPE, | |
717 | }; | |
718 | ||
719 | /* for inner inode cache management */ | |
720 | struct inode_management { | |
721 | struct radix_tree_root ino_root; /* ino entry array */ | |
722 | spinlock_t ino_lock; /* for ino entry lock */ | |
723 | struct list_head ino_list; /* inode list head */ | |
724 | unsigned long ino_num; /* number of entries */ | |
725 | }; | |
726 | ||
727 | /* For s_flag in struct f2fs_sb_info */ | |
728 | enum { | |
729 | SBI_IS_DIRTY, /* dirty flag for checkpoint */ | |
730 | SBI_IS_CLOSE, /* specify unmounting */ | |
731 | SBI_NEED_FSCK, /* need fsck.f2fs to fix */ | |
732 | SBI_POR_DOING, /* recovery is doing or not */ | |
733 | }; | |
734 | ||
735 | enum { | |
736 | CP_TIME, | |
737 | REQ_TIME, | |
738 | MAX_TIME, | |
739 | }; | |
740 | ||
741 | struct f2fs_sb_info { | |
742 | struct super_block *sb; /* pointer to VFS super block */ | |
743 | struct proc_dir_entry *s_proc; /* proc entry */ | |
744 | struct f2fs_super_block *raw_super; /* raw super block pointer */ | |
745 | int valid_super_block; /* valid super block no */ | |
746 | int s_flag; /* flags for sbi */ | |
747 | ||
748 | /* for node-related operations */ | |
749 | struct f2fs_nm_info *nm_info; /* node manager */ | |
750 | struct inode *node_inode; /* cache node blocks */ | |
751 | ||
752 | /* for segment-related operations */ | |
753 | struct f2fs_sm_info *sm_info; /* segment manager */ | |
754 | ||
755 | /* for bio operations */ | |
756 | struct f2fs_bio_info read_io; /* for read bios */ | |
757 | struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */ | |
758 | ||
759 | /* for checkpoint */ | |
760 | struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */ | |
761 | struct inode *meta_inode; /* cache meta blocks */ | |
762 | struct mutex cp_mutex; /* checkpoint procedure lock */ | |
763 | struct rw_semaphore cp_rwsem; /* blocking FS operations */ | |
764 | struct rw_semaphore node_write; /* locking node writes */ | |
765 | struct mutex writepages; /* mutex for writepages() */ | |
766 | wait_queue_head_t cp_wait; | |
767 | unsigned long last_time[MAX_TIME]; /* to store time in jiffies */ | |
768 | long interval_time[MAX_TIME]; /* to store thresholds */ | |
769 | ||
770 | struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */ | |
771 | ||
772 | /* for orphan inode, use 0'th array */ | |
773 | unsigned int max_orphans; /* max orphan inodes */ | |
774 | ||
775 | /* for inode management */ | |
776 | struct list_head inode_list[NR_INODE_TYPE]; /* dirty inode list */ | |
777 | spinlock_t inode_lock[NR_INODE_TYPE]; /* for dirty inode list lock */ | |
778 | ||
779 | /* for extent tree cache */ | |
780 | struct radix_tree_root extent_tree_root;/* cache extent cache entries */ | |
781 | struct rw_semaphore extent_tree_lock; /* locking extent radix tree */ | |
782 | struct list_head extent_list; /* lru list for shrinker */ | |
783 | spinlock_t extent_lock; /* locking extent lru list */ | |
784 | atomic_t total_ext_tree; /* extent tree count */ | |
785 | struct list_head zombie_list; /* extent zombie tree list */ | |
786 | atomic_t total_zombie_tree; /* extent zombie tree count */ | |
787 | atomic_t total_ext_node; /* extent info count */ | |
788 | ||
789 | /* basic filesystem units */ | |
790 | unsigned int log_sectors_per_block; /* log2 sectors per block */ | |
791 | unsigned int log_blocksize; /* log2 block size */ | |
792 | unsigned int blocksize; /* block size */ | |
793 | unsigned int root_ino_num; /* root inode number*/ | |
794 | unsigned int node_ino_num; /* node inode number*/ | |
795 | unsigned int meta_ino_num; /* meta inode number*/ | |
796 | unsigned int log_blocks_per_seg; /* log2 blocks per segment */ | |
797 | unsigned int blocks_per_seg; /* blocks per segment */ | |
798 | unsigned int segs_per_sec; /* segments per section */ | |
799 | unsigned int secs_per_zone; /* sections per zone */ | |
800 | unsigned int total_sections; /* total section count */ | |
801 | unsigned int total_node_count; /* total node block count */ | |
802 | unsigned int total_valid_node_count; /* valid node block count */ | |
803 | unsigned int total_valid_inode_count; /* valid inode count */ | |
804 | loff_t max_file_blocks; /* max block index of file */ | |
805 | int active_logs; /* # of active logs */ | |
806 | int dir_level; /* directory level */ | |
807 | ||
808 | block_t user_block_count; /* # of user blocks */ | |
809 | block_t total_valid_block_count; /* # of valid blocks */ | |
810 | block_t alloc_valid_block_count; /* # of allocated blocks */ | |
811 | block_t discard_blks; /* discard command candidats */ | |
812 | block_t last_valid_block_count; /* for recovery */ | |
813 | u32 s_next_generation; /* for NFS support */ | |
814 | atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */ | |
815 | ||
816 | struct f2fs_mount_info mount_opt; /* mount options */ | |
817 | ||
818 | /* for cleaning operations */ | |
819 | struct mutex gc_mutex; /* mutex for GC */ | |
820 | struct f2fs_gc_kthread *gc_thread; /* GC thread */ | |
821 | unsigned int cur_victim_sec; /* current victim section num */ | |
822 | ||
823 | /* maximum # of trials to find a victim segment for SSR and GC */ | |
824 | unsigned int max_victim_search; | |
825 | ||
826 | /* | |
827 | * for stat information. | |
828 | * one is for the LFS mode, and the other is for the SSR mode. | |
829 | */ | |
830 | #ifdef CONFIG_F2FS_STAT_FS | |
831 | struct f2fs_stat_info *stat_info; /* FS status information */ | |
832 | unsigned int segment_count[2]; /* # of allocated segments */ | |
833 | unsigned int block_count[2]; /* # of allocated blocks */ | |
834 | atomic_t inplace_count; /* # of inplace update */ | |
835 | atomic64_t total_hit_ext; /* # of lookup extent cache */ | |
836 | atomic64_t read_hit_rbtree; /* # of hit rbtree extent node */ | |
837 | atomic64_t read_hit_largest; /* # of hit largest extent node */ | |
838 | atomic64_t read_hit_cached; /* # of hit cached extent node */ | |
839 | atomic_t inline_xattr; /* # of inline_xattr inodes */ | |
840 | atomic_t inline_inode; /* # of inline_data inodes */ | |
841 | atomic_t inline_dir; /* # of inline_dentry inodes */ | |
842 | int bg_gc; /* background gc calls */ | |
843 | unsigned int ndirty_inode[NR_INODE_TYPE]; /* # of dirty inodes */ | |
844 | #endif | |
845 | unsigned int last_victim[2]; /* last victim segment # */ | |
846 | spinlock_t stat_lock; /* lock for stat operations */ | |
847 | ||
848 | /* For sysfs suppport */ | |
849 | struct kobject s_kobj; | |
850 | struct completion s_kobj_unregister; | |
851 | ||
852 | /* For shrinker support */ | |
853 | struct list_head s_list; | |
854 | struct mutex umount_mutex; | |
855 | unsigned int shrinker_run_no; | |
856 | ||
857 | /* For write statistics */ | |
858 | u64 sectors_written_start; | |
859 | u64 kbytes_written; | |
860 | }; | |
861 | ||
862 | /* For write statistics. Suppose sector size is 512 bytes, | |
863 | * and the return value is in kbytes. s is of struct f2fs_sb_info. | |
864 | */ | |
865 | #define BD_PART_WRITTEN(s) \ | |
866 | (((u64)part_stat_read(s->sb->s_bdev->bd_part, sectors[1]) - \ | |
867 | s->sectors_written_start) >> 1) | |
868 | ||
869 | static inline void f2fs_update_time(struct f2fs_sb_info *sbi, int type) | |
870 | { | |
871 | sbi->last_time[type] = jiffies; | |
872 | } | |
873 | ||
874 | static inline bool f2fs_time_over(struct f2fs_sb_info *sbi, int type) | |
875 | { | |
876 | struct timespec ts = {sbi->interval_time[type], 0}; | |
877 | unsigned long interval = timespec_to_jiffies(&ts); | |
878 | ||
879 | return time_after(jiffies, sbi->last_time[type] + interval); | |
880 | } | |
881 | ||
882 | static inline bool is_idle(struct f2fs_sb_info *sbi) | |
883 | { | |
884 | struct block_device *bdev = sbi->sb->s_bdev; | |
885 | struct request_queue *q = bdev_get_queue(bdev); | |
886 | struct request_list *rl = &q->root_rl; | |
887 | ||
888 | if (rl->count[BLK_RW_SYNC] || rl->count[BLK_RW_ASYNC]) | |
889 | return 0; | |
890 | ||
891 | return f2fs_time_over(sbi, REQ_TIME); | |
892 | } | |
893 | ||
894 | /* | |
895 | * Inline functions | |
896 | */ | |
897 | static inline struct f2fs_inode_info *F2FS_I(struct inode *inode) | |
898 | { | |
899 | return container_of(inode, struct f2fs_inode_info, vfs_inode); | |
900 | } | |
901 | ||
902 | static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb) | |
903 | { | |
904 | return sb->s_fs_info; | |
905 | } | |
906 | ||
907 | static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode) | |
908 | { | |
909 | return F2FS_SB(inode->i_sb); | |
910 | } | |
911 | ||
912 | static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping) | |
913 | { | |
914 | return F2FS_I_SB(mapping->host); | |
915 | } | |
916 | ||
917 | static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page) | |
918 | { | |
919 | return F2FS_M_SB(page->mapping); | |
920 | } | |
921 | ||
922 | static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi) | |
923 | { | |
924 | return (struct f2fs_super_block *)(sbi->raw_super); | |
925 | } | |
926 | ||
927 | static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi) | |
928 | { | |
929 | return (struct f2fs_checkpoint *)(sbi->ckpt); | |
930 | } | |
931 | ||
932 | static inline struct f2fs_node *F2FS_NODE(struct page *page) | |
933 | { | |
934 | return (struct f2fs_node *)page_address(page); | |
935 | } | |
936 | ||
937 | static inline struct f2fs_inode *F2FS_INODE(struct page *page) | |
938 | { | |
939 | return &((struct f2fs_node *)page_address(page))->i; | |
940 | } | |
941 | ||
942 | static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi) | |
943 | { | |
944 | return (struct f2fs_nm_info *)(sbi->nm_info); | |
945 | } | |
946 | ||
947 | static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi) | |
948 | { | |
949 | return (struct f2fs_sm_info *)(sbi->sm_info); | |
950 | } | |
951 | ||
952 | static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi) | |
953 | { | |
954 | return (struct sit_info *)(SM_I(sbi)->sit_info); | |
955 | } | |
956 | ||
957 | static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi) | |
958 | { | |
959 | return (struct free_segmap_info *)(SM_I(sbi)->free_info); | |
960 | } | |
961 | ||
962 | static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi) | |
963 | { | |
964 | return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info); | |
965 | } | |
966 | ||
967 | static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi) | |
968 | { | |
969 | return sbi->meta_inode->i_mapping; | |
970 | } | |
971 | ||
972 | static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi) | |
973 | { | |
974 | return sbi->node_inode->i_mapping; | |
975 | } | |
976 | ||
977 | static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type) | |
978 | { | |
979 | return sbi->s_flag & (0x01 << type); | |
980 | } | |
981 | ||
982 | static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type) | |
983 | { | |
984 | sbi->s_flag |= (0x01 << type); | |
985 | } | |
986 | ||
987 | static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type) | |
988 | { | |
989 | sbi->s_flag &= ~(0x01 << type); | |
990 | } | |
991 | ||
992 | static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp) | |
993 | { | |
994 | return le64_to_cpu(cp->checkpoint_ver); | |
995 | } | |
996 | ||
997 | static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) | |
998 | { | |
999 | unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); | |
1000 | return ckpt_flags & f; | |
1001 | } | |
1002 | ||
1003 | static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) | |
1004 | { | |
1005 | unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); | |
1006 | ckpt_flags |= f; | |
1007 | cp->ckpt_flags = cpu_to_le32(ckpt_flags); | |
1008 | } | |
1009 | ||
1010 | static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) | |
1011 | { | |
1012 | unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); | |
1013 | ckpt_flags &= (~f); | |
1014 | cp->ckpt_flags = cpu_to_le32(ckpt_flags); | |
1015 | } | |
1016 | ||
1017 | static inline void f2fs_lock_op(struct f2fs_sb_info *sbi) | |
1018 | { | |
1019 | down_read(&sbi->cp_rwsem); | |
1020 | } | |
1021 | ||
1022 | static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi) | |
1023 | { | |
1024 | up_read(&sbi->cp_rwsem); | |
1025 | } | |
1026 | ||
1027 | static inline void f2fs_lock_all(struct f2fs_sb_info *sbi) | |
1028 | { | |
1029 | f2fs_down_write(&sbi->cp_rwsem, &sbi->cp_mutex); | |
1030 | } | |
1031 | ||
1032 | static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi) | |
1033 | { | |
1034 | up_write(&sbi->cp_rwsem); | |
1035 | } | |
1036 | ||
1037 | static inline int __get_cp_reason(struct f2fs_sb_info *sbi) | |
1038 | { | |
1039 | int reason = CP_SYNC; | |
1040 | ||
1041 | if (test_opt(sbi, FASTBOOT)) | |
1042 | reason = CP_FASTBOOT; | |
1043 | if (is_sbi_flag_set(sbi, SBI_IS_CLOSE)) | |
1044 | reason = CP_UMOUNT; | |
1045 | return reason; | |
1046 | } | |
1047 | ||
1048 | static inline bool __remain_node_summaries(int reason) | |
1049 | { | |
1050 | return (reason == CP_UMOUNT || reason == CP_FASTBOOT); | |
1051 | } | |
1052 | ||
1053 | static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi) | |
1054 | { | |
1055 | return (is_set_ckpt_flags(F2FS_CKPT(sbi), CP_UMOUNT_FLAG) || | |
1056 | is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FASTBOOT_FLAG)); | |
1057 | } | |
1058 | ||
1059 | /* | |
1060 | * Check whether the given nid is within node id range. | |
1061 | */ | |
1062 | static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid) | |
1063 | { | |
1064 | if (unlikely(nid < F2FS_ROOT_INO(sbi))) | |
1065 | return -EINVAL; | |
1066 | if (unlikely(nid >= NM_I(sbi)->max_nid)) | |
1067 | return -EINVAL; | |
1068 | return 0; | |
1069 | } | |
1070 | ||
1071 | #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1 | |
1072 | ||
1073 | /* | |
1074 | * Check whether the inode has blocks or not | |
1075 | */ | |
1076 | static inline int F2FS_HAS_BLOCKS(struct inode *inode) | |
1077 | { | |
1078 | if (F2FS_I(inode)->i_xattr_nid) | |
1079 | return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1; | |
1080 | else | |
1081 | return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS; | |
1082 | } | |
1083 | ||
1084 | static inline bool f2fs_has_xattr_block(unsigned int ofs) | |
1085 | { | |
1086 | return ofs == XATTR_NODE_OFFSET; | |
1087 | } | |
1088 | ||
1089 | static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi, | |
1090 | struct inode *inode, blkcnt_t count) | |
1091 | { | |
1092 | block_t valid_block_count; | |
1093 | ||
1094 | spin_lock(&sbi->stat_lock); | |
1095 | valid_block_count = | |
1096 | sbi->total_valid_block_count + (block_t)count; | |
1097 | if (unlikely(valid_block_count > sbi->user_block_count)) { | |
1098 | spin_unlock(&sbi->stat_lock); | |
1099 | return false; | |
1100 | } | |
1101 | inode->i_blocks += count; | |
1102 | sbi->total_valid_block_count = valid_block_count; | |
1103 | sbi->alloc_valid_block_count += (block_t)count; | |
1104 | spin_unlock(&sbi->stat_lock); | |
1105 | return true; | |
1106 | } | |
1107 | ||
1108 | static inline void dec_valid_block_count(struct f2fs_sb_info *sbi, | |
1109 | struct inode *inode, | |
1110 | blkcnt_t count) | |
1111 | { | |
1112 | spin_lock(&sbi->stat_lock); | |
1113 | f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count); | |
1114 | f2fs_bug_on(sbi, inode->i_blocks < count); | |
1115 | inode->i_blocks -= count; | |
1116 | sbi->total_valid_block_count -= (block_t)count; | |
1117 | spin_unlock(&sbi->stat_lock); | |
1118 | } | |
1119 | ||
1120 | static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type) | |
1121 | { | |
1122 | atomic_inc(&sbi->nr_pages[count_type]); | |
1123 | set_sbi_flag(sbi, SBI_IS_DIRTY); | |
1124 | } | |
1125 | ||
1126 | static inline void inode_inc_dirty_pages(struct inode *inode) | |
1127 | { | |
1128 | atomic_inc(&F2FS_I(inode)->dirty_pages); | |
1129 | inc_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ? | |
1130 | F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA); | |
1131 | } | |
1132 | ||
1133 | static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type) | |
1134 | { | |
1135 | atomic_dec(&sbi->nr_pages[count_type]); | |
1136 | } | |
1137 | ||
1138 | static inline void inode_dec_dirty_pages(struct inode *inode) | |
1139 | { | |
1140 | if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) && | |
1141 | !S_ISLNK(inode->i_mode)) | |
1142 | return; | |
1143 | ||
1144 | atomic_dec(&F2FS_I(inode)->dirty_pages); | |
1145 | dec_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ? | |
1146 | F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA); | |
1147 | } | |
1148 | ||
1149 | static inline int get_pages(struct f2fs_sb_info *sbi, int count_type) | |
1150 | { | |
1151 | return atomic_read(&sbi->nr_pages[count_type]); | |
1152 | } | |
1153 | ||
1154 | static inline int get_dirty_pages(struct inode *inode) | |
1155 | { | |
1156 | return atomic_read(&F2FS_I(inode)->dirty_pages); | |
1157 | } | |
1158 | ||
1159 | static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type) | |
1160 | { | |
1161 | unsigned int pages_per_sec = sbi->segs_per_sec * sbi->blocks_per_seg; | |
1162 | return ((get_pages(sbi, block_type) + pages_per_sec - 1) | |
1163 | >> sbi->log_blocks_per_seg) / sbi->segs_per_sec; | |
1164 | } | |
1165 | ||
1166 | static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi) | |
1167 | { | |
1168 | return sbi->total_valid_block_count; | |
1169 | } | |
1170 | ||
1171 | static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag) | |
1172 | { | |
1173 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
1174 | ||
1175 | /* return NAT or SIT bitmap */ | |
1176 | if (flag == NAT_BITMAP) | |
1177 | return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize); | |
1178 | else if (flag == SIT_BITMAP) | |
1179 | return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize); | |
1180 | ||
1181 | return 0; | |
1182 | } | |
1183 | ||
1184 | static inline block_t __cp_payload(struct f2fs_sb_info *sbi) | |
1185 | { | |
1186 | return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload); | |
1187 | } | |
1188 | ||
1189 | static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag) | |
1190 | { | |
1191 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
1192 | int offset; | |
1193 | ||
1194 | if (__cp_payload(sbi) > 0) { | |
1195 | if (flag == NAT_BITMAP) | |
1196 | return &ckpt->sit_nat_version_bitmap; | |
1197 | else | |
1198 | return (unsigned char *)ckpt + F2FS_BLKSIZE; | |
1199 | } else { | |
1200 | offset = (flag == NAT_BITMAP) ? | |
1201 | le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0; | |
1202 | return &ckpt->sit_nat_version_bitmap + offset; | |
1203 | } | |
1204 | } | |
1205 | ||
1206 | static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi) | |
1207 | { | |
1208 | block_t start_addr; | |
1209 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
1210 | unsigned long long ckpt_version = cur_cp_version(ckpt); | |
1211 | ||
1212 | start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr); | |
1213 | ||
1214 | /* | |
1215 | * odd numbered checkpoint should at cp segment 0 | |
1216 | * and even segment must be at cp segment 1 | |
1217 | */ | |
1218 | if (!(ckpt_version & 1)) | |
1219 | start_addr += sbi->blocks_per_seg; | |
1220 | ||
1221 | return start_addr; | |
1222 | } | |
1223 | ||
1224 | static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi) | |
1225 | { | |
1226 | return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum); | |
1227 | } | |
1228 | ||
1229 | static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi, | |
1230 | struct inode *inode) | |
1231 | { | |
1232 | block_t valid_block_count; | |
1233 | unsigned int valid_node_count; | |
1234 | ||
1235 | spin_lock(&sbi->stat_lock); | |
1236 | ||
1237 | valid_block_count = sbi->total_valid_block_count + 1; | |
1238 | if (unlikely(valid_block_count > sbi->user_block_count)) { | |
1239 | spin_unlock(&sbi->stat_lock); | |
1240 | return false; | |
1241 | } | |
1242 | ||
1243 | valid_node_count = sbi->total_valid_node_count + 1; | |
1244 | if (unlikely(valid_node_count > sbi->total_node_count)) { | |
1245 | spin_unlock(&sbi->stat_lock); | |
1246 | return false; | |
1247 | } | |
1248 | ||
1249 | if (inode) | |
1250 | inode->i_blocks++; | |
1251 | ||
1252 | sbi->alloc_valid_block_count++; | |
1253 | sbi->total_valid_node_count++; | |
1254 | sbi->total_valid_block_count++; | |
1255 | spin_unlock(&sbi->stat_lock); | |
1256 | ||
1257 | return true; | |
1258 | } | |
1259 | ||
1260 | static inline void dec_valid_node_count(struct f2fs_sb_info *sbi, | |
1261 | struct inode *inode) | |
1262 | { | |
1263 | spin_lock(&sbi->stat_lock); | |
1264 | ||
1265 | f2fs_bug_on(sbi, !sbi->total_valid_block_count); | |
1266 | f2fs_bug_on(sbi, !sbi->total_valid_node_count); | |
1267 | f2fs_bug_on(sbi, !inode->i_blocks); | |
1268 | ||
1269 | inode->i_blocks--; | |
1270 | sbi->total_valid_node_count--; | |
1271 | sbi->total_valid_block_count--; | |
1272 | ||
1273 | spin_unlock(&sbi->stat_lock); | |
1274 | } | |
1275 | ||
1276 | static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi) | |
1277 | { | |
1278 | return sbi->total_valid_node_count; | |
1279 | } | |
1280 | ||
1281 | static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi) | |
1282 | { | |
1283 | spin_lock(&sbi->stat_lock); | |
1284 | f2fs_bug_on(sbi, sbi->total_valid_inode_count == sbi->total_node_count); | |
1285 | sbi->total_valid_inode_count++; | |
1286 | spin_unlock(&sbi->stat_lock); | |
1287 | } | |
1288 | ||
1289 | static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi) | |
1290 | { | |
1291 | spin_lock(&sbi->stat_lock); | |
1292 | f2fs_bug_on(sbi, !sbi->total_valid_inode_count); | |
1293 | sbi->total_valid_inode_count--; | |
1294 | spin_unlock(&sbi->stat_lock); | |
1295 | } | |
1296 | ||
1297 | static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi) | |
1298 | { | |
1299 | return sbi->total_valid_inode_count; | |
1300 | } | |
1301 | ||
1302 | static inline struct page *f2fs_grab_cache_page(struct address_space *mapping, | |
1303 | pgoff_t index, bool for_write) | |
1304 | { | |
1305 | if (!for_write) | |
1306 | return grab_cache_page(mapping, index); | |
1307 | return grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS); | |
1308 | } | |
1309 | ||
1310 | static inline void f2fs_copy_page(struct page *src, struct page *dst) | |
1311 | { | |
1312 | char *src_kaddr = kmap(src); | |
1313 | char *dst_kaddr = kmap(dst); | |
1314 | ||
1315 | memcpy(dst_kaddr, src_kaddr, PAGE_SIZE); | |
1316 | kunmap(dst); | |
1317 | kunmap(src); | |
1318 | } | |
1319 | ||
1320 | static inline void f2fs_put_page(struct page *page, int unlock) | |
1321 | { | |
1322 | if (!page) | |
1323 | return; | |
1324 | ||
1325 | if (unlock) { | |
1326 | f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page)); | |
1327 | unlock_page(page); | |
1328 | } | |
1329 | page_cache_release(page); | |
1330 | } | |
1331 | ||
1332 | static inline void f2fs_put_dnode(struct dnode_of_data *dn) | |
1333 | { | |
1334 | if (dn->node_page) | |
1335 | f2fs_put_page(dn->node_page, 1); | |
1336 | if (dn->inode_page && dn->node_page != dn->inode_page) | |
1337 | f2fs_put_page(dn->inode_page, 0); | |
1338 | dn->node_page = NULL; | |
1339 | dn->inode_page = NULL; | |
1340 | } | |
1341 | ||
1342 | static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name, | |
1343 | size_t size) | |
1344 | { | |
1345 | return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL); | |
1346 | } | |
1347 | ||
1348 | static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep, | |
1349 | gfp_t flags) | |
1350 | { | |
1351 | void *entry; | |
1352 | ||
1353 | entry = kmem_cache_alloc(cachep, flags); | |
1354 | if (!entry) | |
1355 | entry = kmem_cache_alloc(cachep, flags | __GFP_NOFAIL); | |
1356 | return entry; | |
1357 | } | |
1358 | ||
1359 | static inline struct bio *f2fs_bio_alloc(int npages) | |
1360 | { | |
1361 | struct bio *bio; | |
1362 | ||
1363 | /* No failure on bio allocation */ | |
1364 | bio = bio_alloc(GFP_NOIO, npages); | |
1365 | if (!bio) | |
1366 | bio = bio_alloc(GFP_NOIO | __GFP_NOFAIL, npages); | |
1367 | return bio; | |
1368 | } | |
1369 | ||
1370 | static inline void f2fs_radix_tree_insert(struct radix_tree_root *root, | |
1371 | unsigned long index, void *item) | |
1372 | { | |
1373 | while (radix_tree_insert(root, index, item)) | |
1374 | cond_resched(); | |
1375 | } | |
1376 | ||
1377 | #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino) | |
1378 | ||
1379 | static inline bool IS_INODE(struct page *page) | |
1380 | { | |
1381 | struct f2fs_node *p = F2FS_NODE(page); | |
1382 | return RAW_IS_INODE(p); | |
1383 | } | |
1384 | ||
1385 | static inline __le32 *blkaddr_in_node(struct f2fs_node *node) | |
1386 | { | |
1387 | return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr; | |
1388 | } | |
1389 | ||
1390 | static inline block_t datablock_addr(struct page *node_page, | |
1391 | unsigned int offset) | |
1392 | { | |
1393 | struct f2fs_node *raw_node; | |
1394 | __le32 *addr_array; | |
1395 | raw_node = F2FS_NODE(node_page); | |
1396 | addr_array = blkaddr_in_node(raw_node); | |
1397 | return le32_to_cpu(addr_array[offset]); | |
1398 | } | |
1399 | ||
1400 | static inline int f2fs_test_bit(unsigned int nr, char *addr) | |
1401 | { | |
1402 | int mask; | |
1403 | ||
1404 | addr += (nr >> 3); | |
1405 | mask = 1 << (7 - (nr & 0x07)); | |
1406 | return mask & *addr; | |
1407 | } | |
1408 | ||
1409 | static inline void f2fs_set_bit(unsigned int nr, char *addr) | |
1410 | { | |
1411 | int mask; | |
1412 | ||
1413 | addr += (nr >> 3); | |
1414 | mask = 1 << (7 - (nr & 0x07)); | |
1415 | *addr |= mask; | |
1416 | } | |
1417 | ||
1418 | static inline void f2fs_clear_bit(unsigned int nr, char *addr) | |
1419 | { | |
1420 | int mask; | |
1421 | ||
1422 | addr += (nr >> 3); | |
1423 | mask = 1 << (7 - (nr & 0x07)); | |
1424 | *addr &= ~mask; | |
1425 | } | |
1426 | ||
1427 | static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr) | |
1428 | { | |
1429 | int mask; | |
1430 | int ret; | |
1431 | ||
1432 | addr += (nr >> 3); | |
1433 | mask = 1 << (7 - (nr & 0x07)); | |
1434 | ret = mask & *addr; | |
1435 | *addr |= mask; | |
1436 | return ret; | |
1437 | } | |
1438 | ||
1439 | static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr) | |
1440 | { | |
1441 | int mask; | |
1442 | int ret; | |
1443 | ||
1444 | addr += (nr >> 3); | |
1445 | mask = 1 << (7 - (nr & 0x07)); | |
1446 | ret = mask & *addr; | |
1447 | *addr &= ~mask; | |
1448 | return ret; | |
1449 | } | |
1450 | ||
1451 | static inline void f2fs_change_bit(unsigned int nr, char *addr) | |
1452 | { | |
1453 | int mask; | |
1454 | ||
1455 | addr += (nr >> 3); | |
1456 | mask = 1 << (7 - (nr & 0x07)); | |
1457 | *addr ^= mask; | |
1458 | } | |
1459 | ||
1460 | /* used for f2fs_inode_info->flags */ | |
1461 | enum { | |
1462 | FI_NEW_INODE, /* indicate newly allocated inode */ | |
1463 | FI_DIRTY_INODE, /* indicate inode is dirty or not */ | |
1464 | FI_DIRTY_DIR, /* indicate directory has dirty pages */ | |
1465 | FI_INC_LINK, /* need to increment i_nlink */ | |
1466 | FI_ACL_MODE, /* indicate acl mode */ | |
1467 | FI_NO_ALLOC, /* should not allocate any blocks */ | |
1468 | FI_FREE_NID, /* free allocated nide */ | |
1469 | FI_UPDATE_DIR, /* should update inode block for consistency */ | |
1470 | FI_DELAY_IPUT, /* used for the recovery */ | |
1471 | FI_NO_EXTENT, /* not to use the extent cache */ | |
1472 | FI_INLINE_XATTR, /* used for inline xattr */ | |
1473 | FI_INLINE_DATA, /* used for inline data*/ | |
1474 | FI_INLINE_DENTRY, /* used for inline dentry */ | |
1475 | FI_APPEND_WRITE, /* inode has appended data */ | |
1476 | FI_UPDATE_WRITE, /* inode has in-place-update data */ | |
1477 | FI_NEED_IPU, /* used for ipu per file */ | |
1478 | FI_ATOMIC_FILE, /* indicate atomic file */ | |
1479 | FI_VOLATILE_FILE, /* indicate volatile file */ | |
1480 | FI_FIRST_BLOCK_WRITTEN, /* indicate #0 data block was written */ | |
1481 | FI_DROP_CACHE, /* drop dirty page cache */ | |
1482 | FI_DATA_EXIST, /* indicate data exists */ | |
1483 | FI_INLINE_DOTS, /* indicate inline dot dentries */ | |
1484 | FI_DO_DEFRAG, /* indicate defragment is running */ | |
1485 | FI_DIRTY_FILE, /* indicate regular/symlink has dirty pages */ | |
1486 | }; | |
1487 | ||
1488 | static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag) | |
1489 | { | |
1490 | if (!test_bit(flag, &fi->flags)) | |
1491 | set_bit(flag, &fi->flags); | |
1492 | } | |
1493 | ||
1494 | static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag) | |
1495 | { | |
1496 | return test_bit(flag, &fi->flags); | |
1497 | } | |
1498 | ||
1499 | static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag) | |
1500 | { | |
1501 | if (test_bit(flag, &fi->flags)) | |
1502 | clear_bit(flag, &fi->flags); | |
1503 | } | |
1504 | ||
1505 | static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode) | |
1506 | { | |
1507 | fi->i_acl_mode = mode; | |
1508 | set_inode_flag(fi, FI_ACL_MODE); | |
1509 | } | |
1510 | ||
1511 | static inline void get_inline_info(struct f2fs_inode_info *fi, | |
1512 | struct f2fs_inode *ri) | |
1513 | { | |
1514 | if (ri->i_inline & F2FS_INLINE_XATTR) | |
1515 | set_inode_flag(fi, FI_INLINE_XATTR); | |
1516 | if (ri->i_inline & F2FS_INLINE_DATA) | |
1517 | set_inode_flag(fi, FI_INLINE_DATA); | |
1518 | if (ri->i_inline & F2FS_INLINE_DENTRY) | |
1519 | set_inode_flag(fi, FI_INLINE_DENTRY); | |
1520 | if (ri->i_inline & F2FS_DATA_EXIST) | |
1521 | set_inode_flag(fi, FI_DATA_EXIST); | |
1522 | if (ri->i_inline & F2FS_INLINE_DOTS) | |
1523 | set_inode_flag(fi, FI_INLINE_DOTS); | |
1524 | } | |
1525 | ||
1526 | static inline void set_raw_inline(struct f2fs_inode_info *fi, | |
1527 | struct f2fs_inode *ri) | |
1528 | { | |
1529 | ri->i_inline = 0; | |
1530 | ||
1531 | if (is_inode_flag_set(fi, FI_INLINE_XATTR)) | |
1532 | ri->i_inline |= F2FS_INLINE_XATTR; | |
1533 | if (is_inode_flag_set(fi, FI_INLINE_DATA)) | |
1534 | ri->i_inline |= F2FS_INLINE_DATA; | |
1535 | if (is_inode_flag_set(fi, FI_INLINE_DENTRY)) | |
1536 | ri->i_inline |= F2FS_INLINE_DENTRY; | |
1537 | if (is_inode_flag_set(fi, FI_DATA_EXIST)) | |
1538 | ri->i_inline |= F2FS_DATA_EXIST; | |
1539 | if (is_inode_flag_set(fi, FI_INLINE_DOTS)) | |
1540 | ri->i_inline |= F2FS_INLINE_DOTS; | |
1541 | } | |
1542 | ||
1543 | static inline int f2fs_has_inline_xattr(struct inode *inode) | |
1544 | { | |
1545 | return is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR); | |
1546 | } | |
1547 | ||
1548 | static inline unsigned int addrs_per_inode(struct inode *inode) | |
1549 | { | |
1550 | if (f2fs_has_inline_xattr(inode)) | |
1551 | return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS; | |
1552 | return DEF_ADDRS_PER_INODE; | |
1553 | } | |
1554 | ||
1555 | static inline void *inline_xattr_addr(struct page *page) | |
1556 | { | |
1557 | struct f2fs_inode *ri = F2FS_INODE(page); | |
1558 | return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE - | |
1559 | F2FS_INLINE_XATTR_ADDRS]); | |
1560 | } | |
1561 | ||
1562 | static inline int inline_xattr_size(struct inode *inode) | |
1563 | { | |
1564 | if (f2fs_has_inline_xattr(inode)) | |
1565 | return F2FS_INLINE_XATTR_ADDRS << 2; | |
1566 | else | |
1567 | return 0; | |
1568 | } | |
1569 | ||
1570 | static inline int f2fs_has_inline_data(struct inode *inode) | |
1571 | { | |
1572 | return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA); | |
1573 | } | |
1574 | ||
1575 | static inline void f2fs_clear_inline_inode(struct inode *inode) | |
1576 | { | |
1577 | clear_inode_flag(F2FS_I(inode), FI_INLINE_DATA); | |
1578 | clear_inode_flag(F2FS_I(inode), FI_DATA_EXIST); | |
1579 | } | |
1580 | ||
1581 | static inline int f2fs_exist_data(struct inode *inode) | |
1582 | { | |
1583 | return is_inode_flag_set(F2FS_I(inode), FI_DATA_EXIST); | |
1584 | } | |
1585 | ||
1586 | static inline int f2fs_has_inline_dots(struct inode *inode) | |
1587 | { | |
1588 | return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DOTS); | |
1589 | } | |
1590 | ||
1591 | static inline bool f2fs_is_atomic_file(struct inode *inode) | |
1592 | { | |
1593 | return is_inode_flag_set(F2FS_I(inode), FI_ATOMIC_FILE); | |
1594 | } | |
1595 | ||
1596 | static inline bool f2fs_is_volatile_file(struct inode *inode) | |
1597 | { | |
1598 | return is_inode_flag_set(F2FS_I(inode), FI_VOLATILE_FILE); | |
1599 | } | |
1600 | ||
1601 | static inline bool f2fs_is_first_block_written(struct inode *inode) | |
1602 | { | |
1603 | return is_inode_flag_set(F2FS_I(inode), FI_FIRST_BLOCK_WRITTEN); | |
1604 | } | |
1605 | ||
1606 | static inline bool f2fs_is_drop_cache(struct inode *inode) | |
1607 | { | |
1608 | return is_inode_flag_set(F2FS_I(inode), FI_DROP_CACHE); | |
1609 | } | |
1610 | ||
1611 | static inline void *inline_data_addr(struct page *page) | |
1612 | { | |
1613 | struct f2fs_inode *ri = F2FS_INODE(page); | |
1614 | return (void *)&(ri->i_addr[1]); | |
1615 | } | |
1616 | ||
1617 | static inline int f2fs_has_inline_dentry(struct inode *inode) | |
1618 | { | |
1619 | return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DENTRY); | |
1620 | } | |
1621 | ||
1622 | static inline void f2fs_dentry_kunmap(struct inode *dir, struct page *page) | |
1623 | { | |
1624 | if (!f2fs_has_inline_dentry(dir)) | |
1625 | kunmap(page); | |
1626 | } | |
1627 | ||
1628 | static inline int is_file(struct inode *inode, int type) | |
1629 | { | |
1630 | return F2FS_I(inode)->i_advise & type; | |
1631 | } | |
1632 | ||
1633 | static inline void set_file(struct inode *inode, int type) | |
1634 | { | |
1635 | F2FS_I(inode)->i_advise |= type; | |
1636 | } | |
1637 | ||
1638 | static inline void clear_file(struct inode *inode, int type) | |
1639 | { | |
1640 | F2FS_I(inode)->i_advise &= ~type; | |
1641 | } | |
1642 | ||
1643 | static inline int f2fs_readonly(struct super_block *sb) | |
1644 | { | |
1645 | return sb->s_flags & MS_RDONLY; | |
1646 | } | |
1647 | ||
1648 | static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi) | |
1649 | { | |
1650 | return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG); | |
1651 | } | |
1652 | ||
1653 | static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi) | |
1654 | { | |
1655 | set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG); | |
1656 | sbi->sb->s_flags |= MS_RDONLY; | |
1657 | } | |
1658 | ||
1659 | static inline bool is_dot_dotdot(const struct qstr *str) | |
1660 | { | |
1661 | if (str->len == 1 && str->name[0] == '.') | |
1662 | return true; | |
1663 | ||
1664 | if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.') | |
1665 | return true; | |
1666 | ||
1667 | return false; | |
1668 | } | |
1669 | ||
1670 | static inline bool f2fs_may_extent_tree(struct inode *inode) | |
1671 | { | |
1672 | if (!test_opt(F2FS_I_SB(inode), EXTENT_CACHE) || | |
1673 | is_inode_flag_set(F2FS_I(inode), FI_NO_EXTENT)) | |
1674 | return false; | |
1675 | ||
1676 | return S_ISREG(inode->i_mode); | |
1677 | } | |
1678 | ||
1679 | static inline void *f2fs_kvmalloc(size_t size, gfp_t flags) | |
1680 | { | |
1681 | void *ret; | |
1682 | ||
1683 | ret = kmalloc(size, flags | __GFP_NOWARN); | |
1684 | if (!ret) | |
1685 | ret = __vmalloc(size, flags, PAGE_KERNEL); | |
1686 | return ret; | |
1687 | } | |
1688 | ||
1689 | static inline void *f2fs_kvzalloc(size_t size, gfp_t flags) | |
1690 | { | |
1691 | void *ret; | |
1692 | ||
1693 | ret = kzalloc(size, flags | __GFP_NOWARN); | |
1694 | if (!ret) | |
1695 | ret = __vmalloc(size, flags | __GFP_ZERO, PAGE_KERNEL); | |
1696 | return ret; | |
1697 | } | |
1698 | ||
1699 | #define get_inode_mode(i) \ | |
1700 | ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \ | |
1701 | (F2FS_I(i)->i_acl_mode) : ((i)->i_mode)) | |
1702 | ||
1703 | /* get offset of first page in next direct node */ | |
1704 | #define PGOFS_OF_NEXT_DNODE(pgofs, inode) \ | |
1705 | ((pgofs < ADDRS_PER_INODE(inode)) ? ADDRS_PER_INODE(inode) : \ | |
1706 | (pgofs - ADDRS_PER_INODE(inode) + ADDRS_PER_BLOCK) / \ | |
1707 | ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(inode)) | |
1708 | ||
1709 | /* | |
1710 | * file.c | |
1711 | */ | |
1712 | int f2fs_sync_file(struct file *, loff_t, loff_t, int); | |
1713 | void truncate_data_blocks(struct dnode_of_data *); | |
1714 | int truncate_blocks(struct inode *, u64, bool); | |
1715 | int f2fs_truncate(struct inode *, bool); | |
1716 | int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *); | |
1717 | int f2fs_setattr(struct dentry *, struct iattr *); | |
1718 | int truncate_hole(struct inode *, pgoff_t, pgoff_t); | |
1719 | int truncate_data_blocks_range(struct dnode_of_data *, int); | |
1720 | long f2fs_ioctl(struct file *, unsigned int, unsigned long); | |
1721 | long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long); | |
1722 | ||
1723 | /* | |
1724 | * inode.c | |
1725 | */ | |
1726 | void f2fs_set_inode_flags(struct inode *); | |
1727 | struct inode *f2fs_iget(struct super_block *, unsigned long); | |
1728 | int try_to_free_nats(struct f2fs_sb_info *, int); | |
1729 | int update_inode(struct inode *, struct page *); | |
1730 | int update_inode_page(struct inode *); | |
1731 | int f2fs_write_inode(struct inode *, struct writeback_control *); | |
1732 | void f2fs_evict_inode(struct inode *); | |
1733 | void handle_failed_inode(struct inode *); | |
1734 | ||
1735 | /* | |
1736 | * namei.c | |
1737 | */ | |
1738 | struct dentry *f2fs_get_parent(struct dentry *child); | |
1739 | ||
1740 | /* | |
1741 | * dir.c | |
1742 | */ | |
1743 | extern unsigned char f2fs_filetype_table[F2FS_FT_MAX]; | |
1744 | void set_de_type(struct f2fs_dir_entry *, umode_t); | |
1745 | ||
1746 | struct f2fs_dir_entry *find_target_dentry(struct f2fs_filename *, | |
1747 | f2fs_hash_t, int *, struct f2fs_dentry_ptr *); | |
1748 | bool f2fs_fill_dentries(struct dir_context *, struct f2fs_dentry_ptr *, | |
1749 | unsigned int, struct f2fs_str *); | |
1750 | void do_make_empty_dir(struct inode *, struct inode *, | |
1751 | struct f2fs_dentry_ptr *); | |
1752 | struct page *init_inode_metadata(struct inode *, struct inode *, | |
1753 | const struct qstr *, struct page *); | |
1754 | void update_parent_metadata(struct inode *, struct inode *, unsigned int); | |
1755 | int room_for_filename(const void *, int, int); | |
1756 | void f2fs_drop_nlink(struct inode *, struct inode *, struct page *); | |
1757 | struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *, | |
1758 | struct page **); | |
1759 | struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **); | |
1760 | ino_t f2fs_inode_by_name(struct inode *, struct qstr *); | |
1761 | void f2fs_set_link(struct inode *, struct f2fs_dir_entry *, | |
1762 | struct page *, struct inode *); | |
1763 | int update_dent_inode(struct inode *, struct inode *, const struct qstr *); | |
1764 | void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *, | |
1765 | const struct qstr *, f2fs_hash_t , unsigned int); | |
1766 | int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *, nid_t, | |
1767 | umode_t); | |
1768 | void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *, | |
1769 | struct inode *); | |
1770 | int f2fs_do_tmpfile(struct inode *, struct inode *); | |
1771 | bool f2fs_empty_dir(struct inode *); | |
1772 | ||
1773 | static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode) | |
1774 | { | |
1775 | return __f2fs_add_link(d_inode(dentry->d_parent), &dentry->d_name, | |
1776 | inode, inode->i_ino, inode->i_mode); | |
1777 | } | |
1778 | ||
1779 | /* | |
1780 | * super.c | |
1781 | */ | |
1782 | int f2fs_commit_super(struct f2fs_sb_info *, bool); | |
1783 | int f2fs_sync_fs(struct super_block *, int); | |
1784 | extern __printf(3, 4) | |
1785 | void f2fs_msg(struct super_block *, const char *, const char *, ...); | |
1786 | int sanity_check_ckpt(struct f2fs_sb_info *sbi); | |
1787 | ||
1788 | /* | |
1789 | * hash.c | |
1790 | */ | |
1791 | f2fs_hash_t f2fs_dentry_hash(const struct qstr *); | |
1792 | ||
1793 | /* | |
1794 | * node.c | |
1795 | */ | |
1796 | struct dnode_of_data; | |
1797 | struct node_info; | |
1798 | ||
1799 | bool available_free_memory(struct f2fs_sb_info *, int); | |
1800 | int need_dentry_mark(struct f2fs_sb_info *, nid_t); | |
1801 | bool is_checkpointed_node(struct f2fs_sb_info *, nid_t); | |
1802 | bool need_inode_block_update(struct f2fs_sb_info *, nid_t); | |
1803 | void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *); | |
1804 | pgoff_t get_next_page_offset(struct dnode_of_data *, pgoff_t); | |
1805 | int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int); | |
1806 | int truncate_inode_blocks(struct inode *, pgoff_t); | |
1807 | int truncate_xattr_node(struct inode *, struct page *); | |
1808 | int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t); | |
1809 | int remove_inode_page(struct inode *); | |
1810 | struct page *new_inode_page(struct inode *); | |
1811 | struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *); | |
1812 | void ra_node_page(struct f2fs_sb_info *, nid_t); | |
1813 | struct page *get_node_page(struct f2fs_sb_info *, pgoff_t); | |
1814 | struct page *get_node_page_ra(struct page *, int); | |
1815 | void sync_inode_page(struct dnode_of_data *); | |
1816 | int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *); | |
1817 | bool alloc_nid(struct f2fs_sb_info *, nid_t *); | |
1818 | void alloc_nid_done(struct f2fs_sb_info *, nid_t); | |
1819 | void alloc_nid_failed(struct f2fs_sb_info *, nid_t); | |
1820 | int try_to_free_nids(struct f2fs_sb_info *, int); | |
1821 | void recover_inline_xattr(struct inode *, struct page *); | |
1822 | void recover_xattr_data(struct inode *, struct page *, block_t); | |
1823 | int recover_inode_page(struct f2fs_sb_info *, struct page *); | |
1824 | int restore_node_summary(struct f2fs_sb_info *, unsigned int, | |
1825 | struct f2fs_summary_block *); | |
1826 | void flush_nat_entries(struct f2fs_sb_info *); | |
1827 | int build_node_manager(struct f2fs_sb_info *); | |
1828 | void destroy_node_manager(struct f2fs_sb_info *); | |
1829 | int __init create_node_manager_caches(void); | |
1830 | void destroy_node_manager_caches(void); | |
1831 | ||
1832 | /* | |
1833 | * segment.c | |
1834 | */ | |
1835 | void register_inmem_page(struct inode *, struct page *); | |
1836 | void drop_inmem_pages(struct inode *); | |
1837 | int commit_inmem_pages(struct inode *); | |
1838 | void f2fs_balance_fs(struct f2fs_sb_info *, bool); | |
1839 | void f2fs_balance_fs_bg(struct f2fs_sb_info *); | |
1840 | int f2fs_issue_flush(struct f2fs_sb_info *); | |
1841 | int create_flush_cmd_control(struct f2fs_sb_info *); | |
1842 | void destroy_flush_cmd_control(struct f2fs_sb_info *); | |
1843 | void invalidate_blocks(struct f2fs_sb_info *, block_t); | |
1844 | bool is_checkpointed_data(struct f2fs_sb_info *, block_t); | |
1845 | void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t); | |
1846 | void clear_prefree_segments(struct f2fs_sb_info *, struct cp_control *); | |
1847 | void release_discard_addrs(struct f2fs_sb_info *); | |
1848 | bool discard_next_dnode(struct f2fs_sb_info *, block_t); | |
1849 | int npages_for_summary_flush(struct f2fs_sb_info *, bool); | |
1850 | void allocate_new_segments(struct f2fs_sb_info *); | |
1851 | int f2fs_trim_fs(struct f2fs_sb_info *, struct fstrim_range *); | |
1852 | struct page *get_sum_page(struct f2fs_sb_info *, unsigned int); | |
1853 | void update_meta_page(struct f2fs_sb_info *, void *, block_t); | |
1854 | void write_meta_page(struct f2fs_sb_info *, struct page *); | |
1855 | void write_node_page(unsigned int, struct f2fs_io_info *); | |
1856 | void write_data_page(struct dnode_of_data *, struct f2fs_io_info *); | |
1857 | void rewrite_data_page(struct f2fs_io_info *); | |
1858 | void __f2fs_replace_block(struct f2fs_sb_info *, struct f2fs_summary *, | |
1859 | block_t, block_t, bool, bool); | |
1860 | void f2fs_replace_block(struct f2fs_sb_info *, struct dnode_of_data *, | |
1861 | block_t, block_t, unsigned char, bool, bool); | |
1862 | void allocate_data_block(struct f2fs_sb_info *, struct page *, | |
1863 | block_t, block_t *, struct f2fs_summary *, int); | |
1864 | void f2fs_wait_on_page_writeback(struct page *, enum page_type, bool); | |
1865 | void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info *, block_t); | |
1866 | void write_data_summaries(struct f2fs_sb_info *, block_t); | |
1867 | void write_node_summaries(struct f2fs_sb_info *, block_t); | |
1868 | int lookup_journal_in_cursum(struct f2fs_journal *, int, unsigned int, int); | |
1869 | void flush_sit_entries(struct f2fs_sb_info *, struct cp_control *); | |
1870 | int build_segment_manager(struct f2fs_sb_info *); | |
1871 | void destroy_segment_manager(struct f2fs_sb_info *); | |
1872 | int __init create_segment_manager_caches(void); | |
1873 | void destroy_segment_manager_caches(void); | |
1874 | ||
1875 | /* | |
1876 | * checkpoint.c | |
1877 | */ | |
1878 | struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t); | |
1879 | struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t); | |
1880 | struct page *get_tmp_page(struct f2fs_sb_info *, pgoff_t); | |
1881 | bool is_valid_blkaddr(struct f2fs_sb_info *, block_t, int); | |
1882 | int ra_meta_pages(struct f2fs_sb_info *, block_t, int, int, bool); | |
1883 | void ra_meta_pages_cond(struct f2fs_sb_info *, pgoff_t); | |
1884 | long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long); | |
1885 | void add_ino_entry(struct f2fs_sb_info *, nid_t, int type); | |
1886 | void remove_ino_entry(struct f2fs_sb_info *, nid_t, int type); | |
1887 | void release_ino_entry(struct f2fs_sb_info *); | |
1888 | bool exist_written_data(struct f2fs_sb_info *, nid_t, int); | |
1889 | int acquire_orphan_inode(struct f2fs_sb_info *); | |
1890 | void release_orphan_inode(struct f2fs_sb_info *); | |
1891 | void add_orphan_inode(struct f2fs_sb_info *, nid_t); | |
1892 | void remove_orphan_inode(struct f2fs_sb_info *, nid_t); | |
1893 | int recover_orphan_inodes(struct f2fs_sb_info *); | |
1894 | int get_valid_checkpoint(struct f2fs_sb_info *); | |
1895 | void update_dirty_page(struct inode *, struct page *); | |
1896 | void add_dirty_dir_inode(struct inode *); | |
1897 | void remove_dirty_inode(struct inode *); | |
1898 | int sync_dirty_inodes(struct f2fs_sb_info *, enum inode_type); | |
1899 | int write_checkpoint(struct f2fs_sb_info *, struct cp_control *); | |
1900 | void init_ino_entry_info(struct f2fs_sb_info *); | |
1901 | int __init create_checkpoint_caches(void); | |
1902 | void destroy_checkpoint_caches(void); | |
1903 | ||
1904 | /* | |
1905 | * data.c | |
1906 | */ | |
1907 | void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int); | |
1908 | void f2fs_submit_merged_bio_cond(struct f2fs_sb_info *, struct inode *, | |
1909 | struct page *, nid_t, enum page_type, int); | |
1910 | int f2fs_submit_page_bio(struct f2fs_io_info *); | |
1911 | void f2fs_submit_page_mbio(struct f2fs_io_info *); | |
1912 | void set_data_blkaddr(struct dnode_of_data *); | |
1913 | void f2fs_update_data_blkaddr(struct dnode_of_data *, block_t); | |
1914 | int reserve_new_block(struct dnode_of_data *); | |
1915 | int f2fs_get_block(struct dnode_of_data *, pgoff_t); | |
1916 | ssize_t f2fs_preallocate_blocks(struct kiocb *, struct iov_iter *); | |
1917 | int f2fs_reserve_block(struct dnode_of_data *, pgoff_t); | |
1918 | struct page *get_read_data_page(struct inode *, pgoff_t, int, bool); | |
1919 | struct page *find_data_page(struct inode *, pgoff_t); | |
1920 | struct page *get_lock_data_page(struct inode *, pgoff_t, bool); | |
1921 | struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool); | |
1922 | int do_write_data_page(struct f2fs_io_info *); | |
1923 | int f2fs_map_blocks(struct inode *, struct f2fs_map_blocks *, int, int); | |
1924 | int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64); | |
1925 | void f2fs_invalidate_page(struct page *, unsigned int, unsigned int); | |
1926 | int f2fs_release_page(struct page *, gfp_t); | |
1927 | ||
1928 | /* | |
1929 | * gc.c | |
1930 | */ | |
1931 | int start_gc_thread(struct f2fs_sb_info *); | |
1932 | void stop_gc_thread(struct f2fs_sb_info *); | |
1933 | block_t start_bidx_of_node(unsigned int, struct inode *); | |
1934 | int f2fs_gc(struct f2fs_sb_info *, bool); | |
1935 | void build_gc_manager(struct f2fs_sb_info *); | |
1936 | ||
1937 | /* | |
1938 | * recovery.c | |
1939 | */ | |
1940 | int recover_fsync_data(struct f2fs_sb_info *); | |
1941 | bool space_for_roll_forward(struct f2fs_sb_info *); | |
1942 | ||
1943 | /* | |
1944 | * debug.c | |
1945 | */ | |
1946 | #ifdef CONFIG_F2FS_STAT_FS | |
1947 | struct f2fs_stat_info { | |
1948 | struct list_head stat_list; | |
1949 | struct f2fs_sb_info *sbi; | |
1950 | int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs; | |
1951 | int main_area_segs, main_area_sections, main_area_zones; | |
1952 | unsigned long long hit_largest, hit_cached, hit_rbtree; | |
1953 | unsigned long long hit_total, total_ext; | |
1954 | int ext_tree, zombie_tree, ext_node; | |
1955 | int ndirty_node, ndirty_meta; | |
1956 | int ndirty_dent, ndirty_dirs, ndirty_data, ndirty_files; | |
1957 | int nats, dirty_nats, sits, dirty_sits, fnids; | |
1958 | int total_count, utilization; | |
1959 | int bg_gc, inmem_pages, wb_pages; | |
1960 | int inline_xattr, inline_inode, inline_dir; | |
1961 | unsigned int valid_count, valid_node_count, valid_inode_count; | |
1962 | unsigned int bimodal, avg_vblocks; | |
1963 | int util_free, util_valid, util_invalid; | |
1964 | int rsvd_segs, overp_segs; | |
1965 | int dirty_count, node_pages, meta_pages; | |
1966 | int prefree_count, call_count, cp_count, bg_cp_count; | |
1967 | int tot_segs, node_segs, data_segs, free_segs, free_secs; | |
1968 | int bg_node_segs, bg_data_segs; | |
1969 | int tot_blks, data_blks, node_blks; | |
1970 | int bg_data_blks, bg_node_blks; | |
1971 | int curseg[NR_CURSEG_TYPE]; | |
1972 | int cursec[NR_CURSEG_TYPE]; | |
1973 | int curzone[NR_CURSEG_TYPE]; | |
1974 | ||
1975 | unsigned int segment_count[2]; | |
1976 | unsigned int block_count[2]; | |
1977 | unsigned int inplace_count; | |
1978 | unsigned long long base_mem, cache_mem, page_mem; | |
1979 | }; | |
1980 | ||
1981 | static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi) | |
1982 | { | |
1983 | return (struct f2fs_stat_info *)sbi->stat_info; | |
1984 | } | |
1985 | ||
1986 | #define stat_inc_cp_count(si) ((si)->cp_count++) | |
1987 | #define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++) | |
1988 | #define stat_inc_call_count(si) ((si)->call_count++) | |
1989 | #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++) | |
1990 | #define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++) | |
1991 | #define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--) | |
1992 | #define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext)) | |
1993 | #define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree)) | |
1994 | #define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest)) | |
1995 | #define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached)) | |
1996 | #define stat_inc_inline_xattr(inode) \ | |
1997 | do { \ | |
1998 | if (f2fs_has_inline_xattr(inode)) \ | |
1999 | (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \ | |
2000 | } while (0) | |
2001 | #define stat_dec_inline_xattr(inode) \ | |
2002 | do { \ | |
2003 | if (f2fs_has_inline_xattr(inode)) \ | |
2004 | (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \ | |
2005 | } while (0) | |
2006 | #define stat_inc_inline_inode(inode) \ | |
2007 | do { \ | |
2008 | if (f2fs_has_inline_data(inode)) \ | |
2009 | (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \ | |
2010 | } while (0) | |
2011 | #define stat_dec_inline_inode(inode) \ | |
2012 | do { \ | |
2013 | if (f2fs_has_inline_data(inode)) \ | |
2014 | (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \ | |
2015 | } while (0) | |
2016 | #define stat_inc_inline_dir(inode) \ | |
2017 | do { \ | |
2018 | if (f2fs_has_inline_dentry(inode)) \ | |
2019 | (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \ | |
2020 | } while (0) | |
2021 | #define stat_dec_inline_dir(inode) \ | |
2022 | do { \ | |
2023 | if (f2fs_has_inline_dentry(inode)) \ | |
2024 | (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \ | |
2025 | } while (0) | |
2026 | #define stat_inc_seg_type(sbi, curseg) \ | |
2027 | ((sbi)->segment_count[(curseg)->alloc_type]++) | |
2028 | #define stat_inc_block_count(sbi, curseg) \ | |
2029 | ((sbi)->block_count[(curseg)->alloc_type]++) | |
2030 | #define stat_inc_inplace_blocks(sbi) \ | |
2031 | (atomic_inc(&(sbi)->inplace_count)) | |
2032 | #define stat_inc_seg_count(sbi, type, gc_type) \ | |
2033 | do { \ | |
2034 | struct f2fs_stat_info *si = F2FS_STAT(sbi); \ | |
2035 | (si)->tot_segs++; \ | |
2036 | if (type == SUM_TYPE_DATA) { \ | |
2037 | si->data_segs++; \ | |
2038 | si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \ | |
2039 | } else { \ | |
2040 | si->node_segs++; \ | |
2041 | si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \ | |
2042 | } \ | |
2043 | } while (0) | |
2044 | ||
2045 | #define stat_inc_tot_blk_count(si, blks) \ | |
2046 | (si->tot_blks += (blks)) | |
2047 | ||
2048 | #define stat_inc_data_blk_count(sbi, blks, gc_type) \ | |
2049 | do { \ | |
2050 | struct f2fs_stat_info *si = F2FS_STAT(sbi); \ | |
2051 | stat_inc_tot_blk_count(si, blks); \ | |
2052 | si->data_blks += (blks); \ | |
2053 | si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \ | |
2054 | } while (0) | |
2055 | ||
2056 | #define stat_inc_node_blk_count(sbi, blks, gc_type) \ | |
2057 | do { \ | |
2058 | struct f2fs_stat_info *si = F2FS_STAT(sbi); \ | |
2059 | stat_inc_tot_blk_count(si, blks); \ | |
2060 | si->node_blks += (blks); \ | |
2061 | si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \ | |
2062 | } while (0) | |
2063 | ||
2064 | int f2fs_build_stats(struct f2fs_sb_info *); | |
2065 | void f2fs_destroy_stats(struct f2fs_sb_info *); | |
2066 | int __init f2fs_create_root_stats(void); | |
2067 | void f2fs_destroy_root_stats(void); | |
2068 | #else | |
2069 | #define stat_inc_cp_count(si) | |
2070 | #define stat_inc_bg_cp_count(si) | |
2071 | #define stat_inc_call_count(si) | |
2072 | #define stat_inc_bggc_count(si) | |
2073 | #define stat_inc_dirty_inode(sbi, type) | |
2074 | #define stat_dec_dirty_inode(sbi, type) | |
2075 | #define stat_inc_total_hit(sb) | |
2076 | #define stat_inc_rbtree_node_hit(sb) | |
2077 | #define stat_inc_largest_node_hit(sbi) | |
2078 | #define stat_inc_cached_node_hit(sbi) | |
2079 | #define stat_inc_inline_xattr(inode) | |
2080 | #define stat_dec_inline_xattr(inode) | |
2081 | #define stat_inc_inline_inode(inode) | |
2082 | #define stat_dec_inline_inode(inode) | |
2083 | #define stat_inc_inline_dir(inode) | |
2084 | #define stat_dec_inline_dir(inode) | |
2085 | #define stat_inc_seg_type(sbi, curseg) | |
2086 | #define stat_inc_block_count(sbi, curseg) | |
2087 | #define stat_inc_inplace_blocks(sbi) | |
2088 | #define stat_inc_seg_count(sbi, type, gc_type) | |
2089 | #define stat_inc_tot_blk_count(si, blks) | |
2090 | #define stat_inc_data_blk_count(sbi, blks, gc_type) | |
2091 | #define stat_inc_node_blk_count(sbi, blks, gc_type) | |
2092 | ||
2093 | static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; } | |
2094 | static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { } | |
2095 | static inline int __init f2fs_create_root_stats(void) { return 0; } | |
2096 | static inline void f2fs_destroy_root_stats(void) { } | |
2097 | #endif | |
2098 | ||
2099 | extern const struct file_operations f2fs_dir_operations; | |
2100 | extern const struct file_operations f2fs_file_operations; | |
2101 | extern const struct inode_operations f2fs_file_inode_operations; | |
2102 | extern const struct address_space_operations f2fs_dblock_aops; | |
2103 | extern const struct address_space_operations f2fs_node_aops; | |
2104 | extern const struct address_space_operations f2fs_meta_aops; | |
2105 | extern const struct inode_operations f2fs_dir_inode_operations; | |
2106 | extern const struct inode_operations f2fs_symlink_inode_operations; | |
2107 | extern const struct inode_operations f2fs_encrypted_symlink_inode_operations; | |
2108 | extern const struct inode_operations f2fs_special_inode_operations; | |
2109 | extern struct kmem_cache *inode_entry_slab; | |
2110 | ||
2111 | /* | |
2112 | * inline.c | |
2113 | */ | |
2114 | bool f2fs_may_inline_data(struct inode *); | |
2115 | bool f2fs_may_inline_dentry(struct inode *); | |
2116 | void read_inline_data(struct page *, struct page *); | |
2117 | bool truncate_inline_inode(struct page *, u64); | |
2118 | int f2fs_read_inline_data(struct inode *, struct page *); | |
2119 | int f2fs_convert_inline_page(struct dnode_of_data *, struct page *); | |
2120 | int f2fs_convert_inline_inode(struct inode *); | |
2121 | int f2fs_write_inline_data(struct inode *, struct page *); | |
2122 | bool recover_inline_data(struct inode *, struct page *); | |
2123 | struct f2fs_dir_entry *find_in_inline_dir(struct inode *, | |
2124 | struct f2fs_filename *, struct page **); | |
2125 | struct f2fs_dir_entry *f2fs_parent_inline_dir(struct inode *, struct page **); | |
2126 | int make_empty_inline_dir(struct inode *inode, struct inode *, struct page *); | |
2127 | int f2fs_add_inline_entry(struct inode *, const struct qstr *, struct inode *, | |
2128 | nid_t, umode_t); | |
2129 | void f2fs_delete_inline_entry(struct f2fs_dir_entry *, struct page *, | |
2130 | struct inode *, struct inode *); | |
2131 | bool f2fs_empty_inline_dir(struct inode *); | |
2132 | int f2fs_read_inline_dir(struct file *, struct dir_context *, | |
2133 | struct f2fs_str *); | |
2134 | int f2fs_inline_data_fiemap(struct inode *, | |
2135 | struct fiemap_extent_info *, __u64, __u64); | |
2136 | ||
2137 | /* | |
2138 | * shrinker.c | |
2139 | */ | |
2140 | unsigned long f2fs_shrink_count(struct shrinker *, struct shrink_control *); | |
2141 | unsigned long f2fs_shrink_scan(struct shrinker *, struct shrink_control *); | |
2142 | void f2fs_join_shrinker(struct f2fs_sb_info *); | |
2143 | void f2fs_leave_shrinker(struct f2fs_sb_info *); | |
2144 | ||
2145 | /* | |
2146 | * extent_cache.c | |
2147 | */ | |
2148 | unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *, int); | |
2149 | bool f2fs_init_extent_tree(struct inode *, struct f2fs_extent *); | |
2150 | unsigned int f2fs_destroy_extent_node(struct inode *); | |
2151 | void f2fs_destroy_extent_tree(struct inode *); | |
2152 | bool f2fs_lookup_extent_cache(struct inode *, pgoff_t, struct extent_info *); | |
2153 | void f2fs_update_extent_cache(struct dnode_of_data *); | |
2154 | void f2fs_update_extent_cache_range(struct dnode_of_data *dn, | |
2155 | pgoff_t, block_t, unsigned int); | |
2156 | void init_extent_cache_info(struct f2fs_sb_info *); | |
2157 | int __init create_extent_cache(void); | |
2158 | void destroy_extent_cache(void); | |
2159 | ||
2160 | /* | |
2161 | * crypto support | |
2162 | */ | |
2163 | static inline int f2fs_encrypted_inode(struct inode *inode) | |
2164 | { | |
2165 | #ifdef CONFIG_F2FS_FS_ENCRYPTION | |
2166 | return file_is_encrypt(inode); | |
2167 | #else | |
2168 | return 0; | |
2169 | #endif | |
2170 | } | |
2171 | ||
2172 | static inline void f2fs_set_encrypted_inode(struct inode *inode) | |
2173 | { | |
2174 | #ifdef CONFIG_F2FS_FS_ENCRYPTION | |
2175 | file_set_encrypt(inode); | |
2176 | #endif | |
2177 | } | |
2178 | ||
2179 | static inline bool f2fs_bio_encrypted(struct bio *bio) | |
2180 | { | |
2181 | #ifdef CONFIG_F2FS_FS_ENCRYPTION | |
2182 | return unlikely(bio->bi_private != NULL); | |
2183 | #else | |
2184 | return false; | |
2185 | #endif | |
2186 | } | |
2187 | ||
2188 | static inline int f2fs_sb_has_crypto(struct super_block *sb) | |
2189 | { | |
2190 | #ifdef CONFIG_F2FS_FS_ENCRYPTION | |
2191 | return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_ENCRYPT); | |
2192 | #else | |
2193 | return 0; | |
2194 | #endif | |
2195 | } | |
2196 | ||
2197 | static inline bool f2fs_may_encrypt(struct inode *inode) | |
2198 | { | |
2199 | #ifdef CONFIG_F2FS_FS_ENCRYPTION | |
2200 | umode_t mode = inode->i_mode; | |
2201 | ||
2202 | return (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode)); | |
2203 | #else | |
2204 | return 0; | |
2205 | #endif | |
2206 | } | |
2207 | ||
2208 | /* crypto_policy.c */ | |
2209 | int f2fs_is_child_context_consistent_with_parent(struct inode *, | |
2210 | struct inode *); | |
2211 | int f2fs_inherit_context(struct inode *, struct inode *, struct page *); | |
2212 | int f2fs_process_policy(const struct f2fs_encryption_policy *, struct inode *); | |
2213 | int f2fs_get_policy(struct inode *, struct f2fs_encryption_policy *); | |
2214 | ||
2215 | /* crypt.c */ | |
2216 | extern struct kmem_cache *f2fs_crypt_info_cachep; | |
2217 | bool f2fs_valid_contents_enc_mode(uint32_t); | |
2218 | uint32_t f2fs_validate_encryption_key_size(uint32_t, uint32_t); | |
2219 | struct f2fs_crypto_ctx *f2fs_get_crypto_ctx(struct inode *); | |
2220 | void f2fs_release_crypto_ctx(struct f2fs_crypto_ctx *); | |
2221 | struct page *f2fs_encrypt(struct inode *, struct page *); | |
2222 | int f2fs_decrypt(struct page *); | |
2223 | void f2fs_end_io_crypto_work(struct f2fs_crypto_ctx *, struct bio *); | |
2224 | ||
2225 | /* crypto_key.c */ | |
2226 | void f2fs_free_encryption_info(struct inode *, struct f2fs_crypt_info *); | |
2227 | int _f2fs_get_encryption_info(struct inode *inode); | |
2228 | ||
2229 | /* crypto_fname.c */ | |
2230 | bool f2fs_valid_filenames_enc_mode(uint32_t); | |
2231 | u32 f2fs_fname_crypto_round_up(u32, u32); | |
2232 | unsigned f2fs_fname_encrypted_size(struct inode *, u32); | |
2233 | int f2fs_fname_crypto_alloc_buffer(struct inode *, u32, struct f2fs_str *); | |
2234 | int f2fs_fname_disk_to_usr(struct inode *, f2fs_hash_t *, | |
2235 | const struct f2fs_str *, struct f2fs_str *); | |
2236 | int f2fs_fname_usr_to_disk(struct inode *, const struct qstr *, | |
2237 | struct f2fs_str *); | |
2238 | ||
2239 | #ifdef CONFIG_F2FS_FS_ENCRYPTION | |
2240 | void f2fs_restore_and_release_control_page(struct page **); | |
2241 | void f2fs_restore_control_page(struct page *); | |
2242 | ||
2243 | int __init f2fs_init_crypto(void); | |
2244 | int f2fs_crypto_initialize(void); | |
2245 | void f2fs_exit_crypto(void); | |
2246 | ||
2247 | int f2fs_has_encryption_key(struct inode *); | |
2248 | ||
2249 | static inline int f2fs_get_encryption_info(struct inode *inode) | |
2250 | { | |
2251 | struct f2fs_crypt_info *ci = F2FS_I(inode)->i_crypt_info; | |
2252 | ||
2253 | if (!ci || | |
2254 | (ci->ci_keyring_key && | |
2255 | (ci->ci_keyring_key->flags & ((1 << KEY_FLAG_INVALIDATED) | | |
2256 | (1 << KEY_FLAG_REVOKED) | | |
2257 | (1 << KEY_FLAG_DEAD))))) | |
2258 | return _f2fs_get_encryption_info(inode); | |
2259 | return 0; | |
2260 | } | |
2261 | ||
2262 | void f2fs_fname_crypto_free_buffer(struct f2fs_str *); | |
2263 | int f2fs_fname_setup_filename(struct inode *, const struct qstr *, | |
2264 | int lookup, struct f2fs_filename *); | |
2265 | void f2fs_fname_free_filename(struct f2fs_filename *); | |
2266 | #else | |
2267 | static inline void f2fs_restore_and_release_control_page(struct page **p) { } | |
2268 | static inline void f2fs_restore_control_page(struct page *p) { } | |
2269 | ||
2270 | static inline int __init f2fs_init_crypto(void) { return 0; } | |
2271 | static inline void f2fs_exit_crypto(void) { } | |
2272 | ||
2273 | static inline int f2fs_has_encryption_key(struct inode *i) { return 0; } | |
2274 | static inline int f2fs_get_encryption_info(struct inode *i) { return 0; } | |
2275 | static inline void f2fs_fname_crypto_free_buffer(struct f2fs_str *p) { } | |
2276 | ||
2277 | static inline int f2fs_fname_setup_filename(struct inode *dir, | |
2278 | const struct qstr *iname, | |
2279 | int lookup, struct f2fs_filename *fname) | |
2280 | { | |
2281 | memset(fname, 0, sizeof(struct f2fs_filename)); | |
2282 | fname->usr_fname = iname; | |
2283 | fname->disk_name.name = (unsigned char *)iname->name; | |
2284 | fname->disk_name.len = iname->len; | |
2285 | return 0; | |
2286 | } | |
2287 | ||
2288 | static inline void f2fs_fname_free_filename(struct f2fs_filename *fname) { } | |
2289 | #endif | |
2290 | #endif |