Commit | Line | Data |
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0a8165d7 | 1 | /* |
39a53e0c JK |
2 | * fs/f2fs/f2fs.h |
3 | * | |
4 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. | |
5 | * http://www.samsung.com/ | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | #ifndef _LINUX_F2FS_H | |
12 | #define _LINUX_F2FS_H | |
13 | ||
14 | #include <linux/types.h> | |
15 | #include <linux/page-flags.h> | |
16 | #include <linux/buffer_head.h> | |
39a53e0c JK |
17 | #include <linux/slab.h> |
18 | #include <linux/crc32.h> | |
19 | #include <linux/magic.h> | |
c2d715d1 | 20 | #include <linux/kobject.h> |
7bd59381 | 21 | #include <linux/sched.h> |
39a53e0c | 22 | |
5d56b671 | 23 | #ifdef CONFIG_F2FS_CHECK_FS |
9850cf4a | 24 | #define f2fs_bug_on(sbi, condition) BUG_ON(condition) |
0daaad97 | 25 | #define f2fs_down_write(x, y) down_write_nest_lock(x, y) |
5d56b671 | 26 | #else |
9850cf4a JK |
27 | #define f2fs_bug_on(sbi, condition) \ |
28 | do { \ | |
29 | if (unlikely(condition)) { \ | |
30 | WARN_ON(1); \ | |
caf0047e | 31 | set_sbi_flag(sbi, SBI_NEED_FSCK); \ |
9850cf4a JK |
32 | } \ |
33 | } while (0) | |
0daaad97 | 34 | #define f2fs_down_write(x, y) down_write(x) |
5d56b671 JK |
35 | #endif |
36 | ||
39a53e0c JK |
37 | /* |
38 | * For mount options | |
39 | */ | |
40 | #define F2FS_MOUNT_BG_GC 0x00000001 | |
41 | #define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002 | |
42 | #define F2FS_MOUNT_DISCARD 0x00000004 | |
43 | #define F2FS_MOUNT_NOHEAP 0x00000008 | |
44 | #define F2FS_MOUNT_XATTR_USER 0x00000010 | |
45 | #define F2FS_MOUNT_POSIX_ACL 0x00000020 | |
46 | #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040 | |
444c580f | 47 | #define F2FS_MOUNT_INLINE_XATTR 0x00000080 |
1001b347 | 48 | #define F2FS_MOUNT_INLINE_DATA 0x00000100 |
34d67deb CY |
49 | #define F2FS_MOUNT_INLINE_DENTRY 0x00000200 |
50 | #define F2FS_MOUNT_FLUSH_MERGE 0x00000400 | |
51 | #define F2FS_MOUNT_NOBARRIER 0x00000800 | |
d5053a34 | 52 | #define F2FS_MOUNT_FASTBOOT 0x00001000 |
39a53e0c JK |
53 | |
54 | #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option) | |
55 | #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option) | |
56 | #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option) | |
57 | ||
58 | #define ver_after(a, b) (typecheck(unsigned long long, a) && \ | |
59 | typecheck(unsigned long long, b) && \ | |
60 | ((long long)((a) - (b)) > 0)) | |
61 | ||
a9841c4d JK |
62 | typedef u32 block_t; /* |
63 | * should not change u32, since it is the on-disk block | |
64 | * address format, __le32. | |
65 | */ | |
39a53e0c JK |
66 | typedef u32 nid_t; |
67 | ||
68 | struct f2fs_mount_info { | |
69 | unsigned int opt; | |
70 | }; | |
71 | ||
7e586fa0 JK |
72 | #define CRCPOLY_LE 0xedb88320 |
73 | ||
74 | static inline __u32 f2fs_crc32(void *buf, size_t len) | |
39a53e0c | 75 | { |
7e586fa0 JK |
76 | unsigned char *p = (unsigned char *)buf; |
77 | __u32 crc = F2FS_SUPER_MAGIC; | |
78 | int i; | |
79 | ||
80 | while (len--) { | |
81 | crc ^= *p++; | |
82 | for (i = 0; i < 8; i++) | |
83 | crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0); | |
84 | } | |
85 | return crc; | |
39a53e0c JK |
86 | } |
87 | ||
7e586fa0 | 88 | static inline bool f2fs_crc_valid(__u32 blk_crc, void *buf, size_t buf_size) |
39a53e0c | 89 | { |
7e586fa0 | 90 | return f2fs_crc32(buf, buf_size) == blk_crc; |
39a53e0c JK |
91 | } |
92 | ||
93 | /* | |
94 | * For checkpoint manager | |
95 | */ | |
96 | enum { | |
97 | NAT_BITMAP, | |
98 | SIT_BITMAP | |
99 | }; | |
100 | ||
75ab4cb8 JK |
101 | enum { |
102 | CP_UMOUNT, | |
119ee914 | 103 | CP_FASTBOOT, |
75ab4cb8 | 104 | CP_SYNC, |
4b2fecc8 | 105 | CP_DISCARD, |
75ab4cb8 JK |
106 | }; |
107 | ||
bba681cb JK |
108 | #define DEF_BATCHED_TRIM_SECTIONS 32 |
109 | #define BATCHED_TRIM_SEGMENTS(sbi) \ | |
110 | (SM_I(sbi)->trim_sections * (sbi)->segs_per_sec) | |
111 | ||
75ab4cb8 JK |
112 | struct cp_control { |
113 | int reason; | |
4b2fecc8 JK |
114 | __u64 trim_start; |
115 | __u64 trim_end; | |
116 | __u64 trim_minlen; | |
117 | __u64 trimmed; | |
75ab4cb8 JK |
118 | }; |
119 | ||
662befda | 120 | /* |
81c1a0f1 | 121 | * For CP/NAT/SIT/SSA readahead |
662befda CY |
122 | */ |
123 | enum { | |
124 | META_CP, | |
125 | META_NAT, | |
81c1a0f1 | 126 | META_SIT, |
4c521f49 JK |
127 | META_SSA, |
128 | META_POR, | |
662befda CY |
129 | }; |
130 | ||
6451e041 JK |
131 | /* for the list of ino */ |
132 | enum { | |
133 | ORPHAN_INO, /* for orphan ino list */ | |
fff04f90 JK |
134 | APPEND_INO, /* for append ino list */ |
135 | UPDATE_INO, /* for update ino list */ | |
6451e041 JK |
136 | MAX_INO_ENTRY, /* max. list */ |
137 | }; | |
138 | ||
139 | struct ino_entry { | |
39a53e0c JK |
140 | struct list_head list; /* list head */ |
141 | nid_t ino; /* inode number */ | |
142 | }; | |
143 | ||
06292073 CY |
144 | /* |
145 | * for the list of directory inodes or gc inodes. | |
146 | * NOTE: there are two slab users for this structure, if we add/modify/delete | |
147 | * fields in structure for one of slab users, it may affect fields or size of | |
148 | * other one, in this condition, it's better to split both of slab and related | |
149 | * data structure. | |
150 | */ | |
151 | struct inode_entry { | |
39a53e0c JK |
152 | struct list_head list; /* list head */ |
153 | struct inode *inode; /* vfs inode pointer */ | |
154 | }; | |
155 | ||
7fd9e544 JK |
156 | /* for the list of blockaddresses to be discarded */ |
157 | struct discard_entry { | |
158 | struct list_head list; /* list head */ | |
159 | block_t blkaddr; /* block address to be discarded */ | |
160 | int len; /* # of consecutive blocks of the discard */ | |
161 | }; | |
162 | ||
39a53e0c JK |
163 | /* for the list of fsync inodes, used only during recovery */ |
164 | struct fsync_inode_entry { | |
165 | struct list_head list; /* list head */ | |
166 | struct inode *inode; /* vfs inode pointer */ | |
c52e1b10 JK |
167 | block_t blkaddr; /* block address locating the last fsync */ |
168 | block_t last_dentry; /* block address locating the last dentry */ | |
169 | block_t last_inode; /* block address locating the last inode */ | |
39a53e0c JK |
170 | }; |
171 | ||
172 | #define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats)) | |
173 | #define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits)) | |
174 | ||
175 | #define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne) | |
176 | #define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid) | |
177 | #define sit_in_journal(sum, i) (sum->sit_j.entries[i].se) | |
178 | #define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno) | |
179 | ||
309cc2b6 JK |
180 | #define MAX_NAT_JENTRIES(sum) (NAT_JOURNAL_ENTRIES - nats_in_cursum(sum)) |
181 | #define MAX_SIT_JENTRIES(sum) (SIT_JOURNAL_ENTRIES - sits_in_cursum(sum)) | |
182 | ||
39a53e0c JK |
183 | static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i) |
184 | { | |
185 | int before = nats_in_cursum(rs); | |
186 | rs->n_nats = cpu_to_le16(before + i); | |
187 | return before; | |
188 | } | |
189 | ||
190 | static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i) | |
191 | { | |
192 | int before = sits_in_cursum(rs); | |
193 | rs->n_sits = cpu_to_le16(before + i); | |
194 | return before; | |
195 | } | |
196 | ||
184a5cd2 CY |
197 | static inline bool __has_cursum_space(struct f2fs_summary_block *sum, int size, |
198 | int type) | |
199 | { | |
200 | if (type == NAT_JOURNAL) | |
309cc2b6 JK |
201 | return size <= MAX_NAT_JENTRIES(sum); |
202 | return size <= MAX_SIT_JENTRIES(sum); | |
184a5cd2 CY |
203 | } |
204 | ||
e9750824 NJ |
205 | /* |
206 | * ioctl commands | |
207 | */ | |
88b88a66 JK |
208 | #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS |
209 | #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS | |
d49f3e89 | 210 | #define F2FS_IOC_GETVERSION FS_IOC_GETVERSION |
88b88a66 JK |
211 | |
212 | #define F2FS_IOCTL_MAGIC 0xf5 | |
213 | #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1) | |
214 | #define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2) | |
02a1335f | 215 | #define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3) |
1e84371f JK |
216 | #define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4) |
217 | #define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5) | |
e9750824 NJ |
218 | |
219 | #if defined(__KERNEL__) && defined(CONFIG_COMPAT) | |
220 | /* | |
221 | * ioctl commands in 32 bit emulation | |
222 | */ | |
223 | #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS | |
224 | #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS | |
225 | #endif | |
226 | ||
39a53e0c JK |
227 | /* |
228 | * For INODE and NODE manager | |
229 | */ | |
7b3cd7d6 JK |
230 | /* for directory operations */ |
231 | struct f2fs_dentry_ptr { | |
232 | const void *bitmap; | |
233 | struct f2fs_dir_entry *dentry; | |
234 | __u8 (*filename)[F2FS_SLOT_LEN]; | |
235 | int max; | |
236 | }; | |
237 | ||
238 | static inline void make_dentry_ptr(struct f2fs_dentry_ptr *d, | |
239 | void *src, int type) | |
240 | { | |
241 | if (type == 1) { | |
242 | struct f2fs_dentry_block *t = (struct f2fs_dentry_block *)src; | |
243 | d->max = NR_DENTRY_IN_BLOCK; | |
244 | d->bitmap = &t->dentry_bitmap; | |
245 | d->dentry = t->dentry; | |
246 | d->filename = t->filename; | |
247 | } else { | |
248 | struct f2fs_inline_dentry *t = (struct f2fs_inline_dentry *)src; | |
249 | d->max = NR_INLINE_DENTRY; | |
250 | d->bitmap = &t->dentry_bitmap; | |
251 | d->dentry = t->dentry; | |
252 | d->filename = t->filename; | |
253 | } | |
254 | } | |
255 | ||
dbe6a5ff JK |
256 | /* |
257 | * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1 | |
258 | * as its node offset to distinguish from index node blocks. | |
259 | * But some bits are used to mark the node block. | |
260 | */ | |
261 | #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \ | |
262 | >> OFFSET_BIT_SHIFT) | |
266e97a8 JK |
263 | enum { |
264 | ALLOC_NODE, /* allocate a new node page if needed */ | |
265 | LOOKUP_NODE, /* look up a node without readahead */ | |
266 | LOOKUP_NODE_RA, /* | |
267 | * look up a node with readahead called | |
4f4124d0 | 268 | * by get_data_block. |
39a53e0c | 269 | */ |
266e97a8 JK |
270 | }; |
271 | ||
39a53e0c JK |
272 | #define F2FS_LINK_MAX 32000 /* maximum link count per file */ |
273 | ||
817202d9 CY |
274 | #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */ |
275 | ||
13054c54 CY |
276 | /* vector size for gang look-up from extent cache that consists of radix tree */ |
277 | #define EXT_TREE_VEC_SIZE 64 | |
278 | ||
39a53e0c | 279 | /* for in-memory extent cache entry */ |
13054c54 CY |
280 | #define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */ |
281 | ||
282 | /* number of extent info in extent cache we try to shrink */ | |
283 | #define EXTENT_CACHE_SHRINK_NUMBER 128 | |
c11abd1a | 284 | |
39a53e0c | 285 | struct extent_info { |
13054c54 CY |
286 | unsigned int fofs; /* start offset in a file */ |
287 | u32 blk; /* start block address of the extent */ | |
288 | unsigned int len; /* length of the extent */ | |
289 | }; | |
290 | ||
291 | struct extent_node { | |
292 | struct rb_node rb_node; /* rb node located in rb-tree */ | |
293 | struct list_head list; /* node in global extent list of sbi */ | |
294 | struct extent_info ei; /* extent info */ | |
295 | }; | |
296 | ||
297 | struct extent_tree { | |
298 | nid_t ino; /* inode number */ | |
299 | struct rb_root root; /* root of extent info rb-tree */ | |
300 | rwlock_t lock; /* protect extent info rb-tree */ | |
301 | atomic_t refcount; /* reference count of rb-tree */ | |
302 | unsigned int count; /* # of extent node in rb-tree*/ | |
39a53e0c JK |
303 | }; |
304 | ||
305 | /* | |
306 | * i_advise uses FADVISE_XXX_BIT. We can add additional hints later. | |
307 | */ | |
308 | #define FADVISE_COLD_BIT 0x01 | |
354a3399 | 309 | #define FADVISE_LOST_PINO_BIT 0x02 |
39a53e0c | 310 | |
ab9fa662 JK |
311 | #define DEF_DIR_LEVEL 0 |
312 | ||
39a53e0c JK |
313 | struct f2fs_inode_info { |
314 | struct inode vfs_inode; /* serve a vfs inode */ | |
315 | unsigned long i_flags; /* keep an inode flags for ioctl */ | |
316 | unsigned char i_advise; /* use to give file attribute hints */ | |
38431545 | 317 | unsigned char i_dir_level; /* use for dentry level for large dir */ |
39a53e0c | 318 | unsigned int i_current_depth; /* use only in directory structure */ |
6666e6aa | 319 | unsigned int i_pino; /* parent inode number */ |
39a53e0c JK |
320 | umode_t i_acl_mode; /* keep file acl mode temporarily */ |
321 | ||
322 | /* Use below internally in f2fs*/ | |
323 | unsigned long flags; /* use to pass per-file flags */ | |
d928bfbf | 324 | struct rw_semaphore i_sem; /* protect fi info */ |
a7ffdbe2 | 325 | atomic_t dirty_pages; /* # of dirty pages */ |
39a53e0c JK |
326 | f2fs_hash_t chash; /* hash value of given file name */ |
327 | unsigned int clevel; /* maximum level of given file name */ | |
328 | nid_t i_xattr_nid; /* node id that contains xattrs */ | |
e518ff81 | 329 | unsigned long long xattr_ver; /* cp version of xattr modification */ |
39a53e0c | 330 | struct extent_info ext; /* in-memory extent cache entry */ |
0c872e2d | 331 | rwlock_t ext_lock; /* rwlock for single extent cache */ |
06292073 | 332 | struct inode_entry *dirty_dir; /* the pointer of dirty dir */ |
88b88a66 | 333 | |
34ba94ba | 334 | struct radix_tree_root inmem_root; /* radix tree for inmem pages */ |
88b88a66 JK |
335 | struct list_head inmem_pages; /* inmemory pages managed by f2fs */ |
336 | struct mutex inmem_lock; /* lock for inmemory pages */ | |
39a53e0c JK |
337 | }; |
338 | ||
339 | static inline void get_extent_info(struct extent_info *ext, | |
340 | struct f2fs_extent i_ext) | |
341 | { | |
39a53e0c | 342 | ext->fofs = le32_to_cpu(i_ext.fofs); |
4d0b0bd4 | 343 | ext->blk = le32_to_cpu(i_ext.blk); |
39a53e0c | 344 | ext->len = le32_to_cpu(i_ext.len); |
39a53e0c JK |
345 | } |
346 | ||
347 | static inline void set_raw_extent(struct extent_info *ext, | |
348 | struct f2fs_extent *i_ext) | |
349 | { | |
39a53e0c | 350 | i_ext->fofs = cpu_to_le32(ext->fofs); |
4d0b0bd4 | 351 | i_ext->blk = cpu_to_le32(ext->blk); |
39a53e0c | 352 | i_ext->len = cpu_to_le32(ext->len); |
39a53e0c JK |
353 | } |
354 | ||
355 | struct f2fs_nm_info { | |
356 | block_t nat_blkaddr; /* base disk address of NAT */ | |
357 | nid_t max_nid; /* maximum possible node ids */ | |
7ee0eeab | 358 | nid_t available_nids; /* maximum available node ids */ |
39a53e0c | 359 | nid_t next_scan_nid; /* the next nid to be scanned */ |
cdfc41c1 | 360 | unsigned int ram_thresh; /* control the memory footprint */ |
39a53e0c JK |
361 | |
362 | /* NAT cache management */ | |
363 | struct radix_tree_root nat_root;/* root of the nat entry cache */ | |
309cc2b6 | 364 | struct radix_tree_root nat_set_root;/* root of the nat set cache */ |
8b26ef98 | 365 | struct rw_semaphore nat_tree_lock; /* protect nat_tree_lock */ |
39a53e0c | 366 | struct list_head nat_entries; /* cached nat entry list (clean) */ |
309cc2b6 | 367 | unsigned int nat_cnt; /* the # of cached nat entries */ |
aec71382 | 368 | unsigned int dirty_nat_cnt; /* total num of nat entries in set */ |
39a53e0c JK |
369 | |
370 | /* free node ids management */ | |
8a7ed66a | 371 | struct radix_tree_root free_nid_root;/* root of the free_nid cache */ |
39a53e0c JK |
372 | struct list_head free_nid_list; /* a list for free nids */ |
373 | spinlock_t free_nid_list_lock; /* protect free nid list */ | |
374 | unsigned int fcnt; /* the number of free node id */ | |
375 | struct mutex build_lock; /* lock for build free nids */ | |
376 | ||
377 | /* for checkpoint */ | |
378 | char *nat_bitmap; /* NAT bitmap pointer */ | |
379 | int bitmap_size; /* bitmap size */ | |
380 | }; | |
381 | ||
382 | /* | |
383 | * this structure is used as one of function parameters. | |
384 | * all the information are dedicated to a given direct node block determined | |
385 | * by the data offset in a file. | |
386 | */ | |
387 | struct dnode_of_data { | |
388 | struct inode *inode; /* vfs inode pointer */ | |
389 | struct page *inode_page; /* its inode page, NULL is possible */ | |
390 | struct page *node_page; /* cached direct node page */ | |
391 | nid_t nid; /* node id of the direct node block */ | |
392 | unsigned int ofs_in_node; /* data offset in the node page */ | |
393 | bool inode_page_locked; /* inode page is locked or not */ | |
394 | block_t data_blkaddr; /* block address of the node block */ | |
395 | }; | |
396 | ||
397 | static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode, | |
398 | struct page *ipage, struct page *npage, nid_t nid) | |
399 | { | |
d66d1f76 | 400 | memset(dn, 0, sizeof(*dn)); |
39a53e0c JK |
401 | dn->inode = inode; |
402 | dn->inode_page = ipage; | |
403 | dn->node_page = npage; | |
404 | dn->nid = nid; | |
39a53e0c JK |
405 | } |
406 | ||
407 | /* | |
408 | * For SIT manager | |
409 | * | |
410 | * By default, there are 6 active log areas across the whole main area. | |
411 | * When considering hot and cold data separation to reduce cleaning overhead, | |
412 | * we split 3 for data logs and 3 for node logs as hot, warm, and cold types, | |
413 | * respectively. | |
414 | * In the current design, you should not change the numbers intentionally. | |
415 | * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6 | |
416 | * logs individually according to the underlying devices. (default: 6) | |
417 | * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for | |
418 | * data and 8 for node logs. | |
419 | */ | |
420 | #define NR_CURSEG_DATA_TYPE (3) | |
421 | #define NR_CURSEG_NODE_TYPE (3) | |
422 | #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE) | |
423 | ||
424 | enum { | |
425 | CURSEG_HOT_DATA = 0, /* directory entry blocks */ | |
426 | CURSEG_WARM_DATA, /* data blocks */ | |
427 | CURSEG_COLD_DATA, /* multimedia or GCed data blocks */ | |
428 | CURSEG_HOT_NODE, /* direct node blocks of directory files */ | |
429 | CURSEG_WARM_NODE, /* direct node blocks of normal files */ | |
430 | CURSEG_COLD_NODE, /* indirect node blocks */ | |
38aa0889 JK |
431 | NO_CHECK_TYPE, |
432 | CURSEG_DIRECT_IO, /* to use for the direct IO path */ | |
39a53e0c JK |
433 | }; |
434 | ||
6b4afdd7 | 435 | struct flush_cmd { |
6b4afdd7 | 436 | struct completion wait; |
721bd4d5 | 437 | struct llist_node llnode; |
6b4afdd7 JK |
438 | int ret; |
439 | }; | |
440 | ||
a688b9d9 GZ |
441 | struct flush_cmd_control { |
442 | struct task_struct *f2fs_issue_flush; /* flush thread */ | |
443 | wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */ | |
721bd4d5 GZ |
444 | struct llist_head issue_list; /* list for command issue */ |
445 | struct llist_node *dispatch_list; /* list for command dispatch */ | |
a688b9d9 GZ |
446 | }; |
447 | ||
39a53e0c JK |
448 | struct f2fs_sm_info { |
449 | struct sit_info *sit_info; /* whole segment information */ | |
450 | struct free_segmap_info *free_info; /* free segment information */ | |
451 | struct dirty_seglist_info *dirty_info; /* dirty segment information */ | |
452 | struct curseg_info *curseg_array; /* active segment information */ | |
453 | ||
39a53e0c JK |
454 | block_t seg0_blkaddr; /* block address of 0'th segment */ |
455 | block_t main_blkaddr; /* start block address of main area */ | |
456 | block_t ssa_blkaddr; /* start block address of SSA area */ | |
457 | ||
458 | unsigned int segment_count; /* total # of segments */ | |
459 | unsigned int main_segments; /* # of segments in main area */ | |
460 | unsigned int reserved_segments; /* # of reserved segments */ | |
461 | unsigned int ovp_segments; /* # of overprovision segments */ | |
81eb8d6e JK |
462 | |
463 | /* a threshold to reclaim prefree segments */ | |
464 | unsigned int rec_prefree_segments; | |
7fd9e544 JK |
465 | |
466 | /* for small discard management */ | |
467 | struct list_head discard_list; /* 4KB discard list */ | |
468 | int nr_discards; /* # of discards in the list */ | |
469 | int max_discards; /* max. discards to be issued */ | |
216fbd64 | 470 | |
bba681cb JK |
471 | /* for batched trimming */ |
472 | unsigned int trim_sections; /* # of sections to trim */ | |
473 | ||
184a5cd2 CY |
474 | struct list_head sit_entry_set; /* sit entry set list */ |
475 | ||
216fbd64 JK |
476 | unsigned int ipu_policy; /* in-place-update policy */ |
477 | unsigned int min_ipu_util; /* in-place-update threshold */ | |
c1ce1b02 | 478 | unsigned int min_fsync_blocks; /* threshold for fsync */ |
6b4afdd7 JK |
479 | |
480 | /* for flush command control */ | |
a688b9d9 GZ |
481 | struct flush_cmd_control *cmd_control_info; |
482 | ||
39a53e0c JK |
483 | }; |
484 | ||
39a53e0c JK |
485 | /* |
486 | * For superblock | |
487 | */ | |
488 | /* | |
489 | * COUNT_TYPE for monitoring | |
490 | * | |
491 | * f2fs monitors the number of several block types such as on-writeback, | |
492 | * dirty dentry blocks, dirty node blocks, and dirty meta blocks. | |
493 | */ | |
494 | enum count_type { | |
495 | F2FS_WRITEBACK, | |
496 | F2FS_DIRTY_DENTS, | |
497 | F2FS_DIRTY_NODES, | |
498 | F2FS_DIRTY_META, | |
8dcf2ff7 | 499 | F2FS_INMEM_PAGES, |
39a53e0c JK |
500 | NR_COUNT_TYPE, |
501 | }; | |
502 | ||
39a53e0c | 503 | /* |
e1c42045 | 504 | * The below are the page types of bios used in submit_bio(). |
39a53e0c JK |
505 | * The available types are: |
506 | * DATA User data pages. It operates as async mode. | |
507 | * NODE Node pages. It operates as async mode. | |
508 | * META FS metadata pages such as SIT, NAT, CP. | |
509 | * NR_PAGE_TYPE The number of page types. | |
510 | * META_FLUSH Make sure the previous pages are written | |
511 | * with waiting the bio's completion | |
512 | * ... Only can be used with META. | |
513 | */ | |
7d5e5109 | 514 | #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type)) |
39a53e0c JK |
515 | enum page_type { |
516 | DATA, | |
517 | NODE, | |
518 | META, | |
519 | NR_PAGE_TYPE, | |
520 | META_FLUSH, | |
521 | }; | |
522 | ||
458e6197 | 523 | struct f2fs_io_info { |
7e8f2308 GZ |
524 | enum page_type type; /* contains DATA/NODE/META/META_FLUSH */ |
525 | int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */ | |
cf04e8eb | 526 | block_t blk_addr; /* block address to be written */ |
458e6197 JK |
527 | }; |
528 | ||
93dfe2ac | 529 | #define is_read_io(rw) (((rw) & 1) == READ) |
1ff7bd3b | 530 | struct f2fs_bio_info { |
458e6197 | 531 | struct f2fs_sb_info *sbi; /* f2fs superblock */ |
1ff7bd3b JK |
532 | struct bio *bio; /* bios to merge */ |
533 | sector_t last_block_in_bio; /* last block number */ | |
458e6197 | 534 | struct f2fs_io_info fio; /* store buffered io info. */ |
df0f8dc0 | 535 | struct rw_semaphore io_rwsem; /* blocking op for bio */ |
1ff7bd3b JK |
536 | }; |
537 | ||
67298804 CY |
538 | /* for inner inode cache management */ |
539 | struct inode_management { | |
540 | struct radix_tree_root ino_root; /* ino entry array */ | |
541 | spinlock_t ino_lock; /* for ino entry lock */ | |
542 | struct list_head ino_list; /* inode list head */ | |
543 | unsigned long ino_num; /* number of entries */ | |
544 | }; | |
545 | ||
caf0047e CY |
546 | /* For s_flag in struct f2fs_sb_info */ |
547 | enum { | |
548 | SBI_IS_DIRTY, /* dirty flag for checkpoint */ | |
549 | SBI_IS_CLOSE, /* specify unmounting */ | |
550 | SBI_NEED_FSCK, /* need fsck.f2fs to fix */ | |
551 | SBI_POR_DOING, /* recovery is doing or not */ | |
552 | }; | |
553 | ||
39a53e0c JK |
554 | struct f2fs_sb_info { |
555 | struct super_block *sb; /* pointer to VFS super block */ | |
5e176d54 | 556 | struct proc_dir_entry *s_proc; /* proc entry */ |
39a53e0c JK |
557 | struct buffer_head *raw_super_buf; /* buffer head of raw sb */ |
558 | struct f2fs_super_block *raw_super; /* raw super block pointer */ | |
caf0047e | 559 | int s_flag; /* flags for sbi */ |
39a53e0c JK |
560 | |
561 | /* for node-related operations */ | |
562 | struct f2fs_nm_info *nm_info; /* node manager */ | |
563 | struct inode *node_inode; /* cache node blocks */ | |
564 | ||
565 | /* for segment-related operations */ | |
566 | struct f2fs_sm_info *sm_info; /* segment manager */ | |
1ff7bd3b JK |
567 | |
568 | /* for bio operations */ | |
924b720b | 569 | struct f2fs_bio_info read_io; /* for read bios */ |
1ff7bd3b | 570 | struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */ |
39a53e0c JK |
571 | |
572 | /* for checkpoint */ | |
573 | struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */ | |
574 | struct inode *meta_inode; /* cache meta blocks */ | |
39936837 | 575 | struct mutex cp_mutex; /* checkpoint procedure lock */ |
e479556b | 576 | struct rw_semaphore cp_rwsem; /* blocking FS operations */ |
b3582c68 | 577 | struct rw_semaphore node_write; /* locking node writes */ |
39a53e0c | 578 | struct mutex writepages; /* mutex for writepages() */ |
fb51b5ef | 579 | wait_queue_head_t cp_wait; |
39a53e0c | 580 | |
67298804 | 581 | struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */ |
6451e041 JK |
582 | |
583 | /* for orphan inode, use 0'th array */ | |
0d47c1ad | 584 | unsigned int max_orphans; /* max orphan inodes */ |
39a53e0c JK |
585 | |
586 | /* for directory inode management */ | |
587 | struct list_head dir_inode_list; /* dir inode list */ | |
588 | spinlock_t dir_inode_lock; /* for dir inode list lock */ | |
39a53e0c | 589 | |
13054c54 CY |
590 | /* for extent tree cache */ |
591 | struct radix_tree_root extent_tree_root;/* cache extent cache entries */ | |
592 | struct rw_semaphore extent_tree_lock; /* locking extent radix tree */ | |
593 | struct list_head extent_list; /* lru list for shrinker */ | |
594 | spinlock_t extent_lock; /* locking extent lru list */ | |
595 | int total_ext_tree; /* extent tree count */ | |
596 | atomic_t total_ext_node; /* extent info count */ | |
597 | ||
e1c42045 | 598 | /* basic filesystem units */ |
39a53e0c JK |
599 | unsigned int log_sectors_per_block; /* log2 sectors per block */ |
600 | unsigned int log_blocksize; /* log2 block size */ | |
601 | unsigned int blocksize; /* block size */ | |
602 | unsigned int root_ino_num; /* root inode number*/ | |
603 | unsigned int node_ino_num; /* node inode number*/ | |
604 | unsigned int meta_ino_num; /* meta inode number*/ | |
605 | unsigned int log_blocks_per_seg; /* log2 blocks per segment */ | |
606 | unsigned int blocks_per_seg; /* blocks per segment */ | |
607 | unsigned int segs_per_sec; /* segments per section */ | |
608 | unsigned int secs_per_zone; /* sections per zone */ | |
609 | unsigned int total_sections; /* total section count */ | |
610 | unsigned int total_node_count; /* total node block count */ | |
611 | unsigned int total_valid_node_count; /* valid node block count */ | |
612 | unsigned int total_valid_inode_count; /* valid inode count */ | |
613 | int active_logs; /* # of active logs */ | |
ab9fa662 | 614 | int dir_level; /* directory level */ |
39a53e0c JK |
615 | |
616 | block_t user_block_count; /* # of user blocks */ | |
617 | block_t total_valid_block_count; /* # of valid blocks */ | |
618 | block_t alloc_valid_block_count; /* # of allocated blocks */ | |
619 | block_t last_valid_block_count; /* for recovery */ | |
620 | u32 s_next_generation; /* for NFS support */ | |
621 | atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */ | |
622 | ||
623 | struct f2fs_mount_info mount_opt; /* mount options */ | |
624 | ||
625 | /* for cleaning operations */ | |
626 | struct mutex gc_mutex; /* mutex for GC */ | |
627 | struct f2fs_gc_kthread *gc_thread; /* GC thread */ | |
5ec4e49f | 628 | unsigned int cur_victim_sec; /* current victim section num */ |
39a53e0c | 629 | |
b1c57c1c JK |
630 | /* maximum # of trials to find a victim segment for SSR and GC */ |
631 | unsigned int max_victim_search; | |
632 | ||
39a53e0c JK |
633 | /* |
634 | * for stat information. | |
635 | * one is for the LFS mode, and the other is for the SSR mode. | |
636 | */ | |
35b09d82 | 637 | #ifdef CONFIG_F2FS_STAT_FS |
39a53e0c JK |
638 | struct f2fs_stat_info *stat_info; /* FS status information */ |
639 | unsigned int segment_count[2]; /* # of allocated segments */ | |
640 | unsigned int block_count[2]; /* # of allocated blocks */ | |
b9a2c252 | 641 | atomic_t inplace_count; /* # of inplace update */ |
39a53e0c | 642 | int total_hit_ext, read_hit_ext; /* extent cache hit ratio */ |
03e14d52 CY |
643 | atomic_t inline_inode; /* # of inline_data inodes */ |
644 | atomic_t inline_dir; /* # of inline_dentry inodes */ | |
39a53e0c | 645 | int bg_gc; /* background gc calls */ |
35b09d82 NJ |
646 | unsigned int n_dirty_dirs; /* # of dir inodes */ |
647 | #endif | |
648 | unsigned int last_victim[2]; /* last victim segment # */ | |
39a53e0c | 649 | spinlock_t stat_lock; /* lock for stat operations */ |
b59d0bae NJ |
650 | |
651 | /* For sysfs suppport */ | |
652 | struct kobject s_kobj; | |
653 | struct completion s_kobj_unregister; | |
39a53e0c JK |
654 | }; |
655 | ||
656 | /* | |
657 | * Inline functions | |
658 | */ | |
659 | static inline struct f2fs_inode_info *F2FS_I(struct inode *inode) | |
660 | { | |
661 | return container_of(inode, struct f2fs_inode_info, vfs_inode); | |
662 | } | |
663 | ||
664 | static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb) | |
665 | { | |
666 | return sb->s_fs_info; | |
667 | } | |
668 | ||
4081363f JK |
669 | static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode) |
670 | { | |
671 | return F2FS_SB(inode->i_sb); | |
672 | } | |
673 | ||
674 | static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping) | |
675 | { | |
676 | return F2FS_I_SB(mapping->host); | |
677 | } | |
678 | ||
679 | static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page) | |
680 | { | |
681 | return F2FS_M_SB(page->mapping); | |
682 | } | |
683 | ||
39a53e0c JK |
684 | static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi) |
685 | { | |
686 | return (struct f2fs_super_block *)(sbi->raw_super); | |
687 | } | |
688 | ||
689 | static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi) | |
690 | { | |
691 | return (struct f2fs_checkpoint *)(sbi->ckpt); | |
692 | } | |
693 | ||
45590710 GZ |
694 | static inline struct f2fs_node *F2FS_NODE(struct page *page) |
695 | { | |
696 | return (struct f2fs_node *)page_address(page); | |
697 | } | |
698 | ||
58bfaf44 JK |
699 | static inline struct f2fs_inode *F2FS_INODE(struct page *page) |
700 | { | |
701 | return &((struct f2fs_node *)page_address(page))->i; | |
702 | } | |
703 | ||
39a53e0c JK |
704 | static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi) |
705 | { | |
706 | return (struct f2fs_nm_info *)(sbi->nm_info); | |
707 | } | |
708 | ||
709 | static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi) | |
710 | { | |
711 | return (struct f2fs_sm_info *)(sbi->sm_info); | |
712 | } | |
713 | ||
714 | static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi) | |
715 | { | |
716 | return (struct sit_info *)(SM_I(sbi)->sit_info); | |
717 | } | |
718 | ||
719 | static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi) | |
720 | { | |
721 | return (struct free_segmap_info *)(SM_I(sbi)->free_info); | |
722 | } | |
723 | ||
724 | static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi) | |
725 | { | |
726 | return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info); | |
727 | } | |
728 | ||
9df27d98 GZ |
729 | static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi) |
730 | { | |
731 | return sbi->meta_inode->i_mapping; | |
732 | } | |
733 | ||
4ef51a8f JK |
734 | static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi) |
735 | { | |
736 | return sbi->node_inode->i_mapping; | |
737 | } | |
738 | ||
caf0047e CY |
739 | static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type) |
740 | { | |
741 | return sbi->s_flag & (0x01 << type); | |
742 | } | |
743 | ||
744 | static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type) | |
39a53e0c | 745 | { |
caf0047e | 746 | sbi->s_flag |= (0x01 << type); |
39a53e0c JK |
747 | } |
748 | ||
caf0047e | 749 | static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type) |
39a53e0c | 750 | { |
caf0047e | 751 | sbi->s_flag &= ~(0x01 << type); |
39a53e0c JK |
752 | } |
753 | ||
d71b5564 JK |
754 | static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp) |
755 | { | |
756 | return le64_to_cpu(cp->checkpoint_ver); | |
757 | } | |
758 | ||
25ca923b JK |
759 | static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) |
760 | { | |
761 | unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); | |
762 | return ckpt_flags & f; | |
763 | } | |
764 | ||
765 | static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) | |
766 | { | |
767 | unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); | |
768 | ckpt_flags |= f; | |
769 | cp->ckpt_flags = cpu_to_le32(ckpt_flags); | |
770 | } | |
771 | ||
772 | static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) | |
773 | { | |
774 | unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); | |
775 | ckpt_flags &= (~f); | |
776 | cp->ckpt_flags = cpu_to_le32(ckpt_flags); | |
777 | } | |
778 | ||
e479556b | 779 | static inline void f2fs_lock_op(struct f2fs_sb_info *sbi) |
39936837 | 780 | { |
e479556b | 781 | down_read(&sbi->cp_rwsem); |
39936837 JK |
782 | } |
783 | ||
e479556b | 784 | static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi) |
39a53e0c | 785 | { |
e479556b | 786 | up_read(&sbi->cp_rwsem); |
39a53e0c JK |
787 | } |
788 | ||
e479556b | 789 | static inline void f2fs_lock_all(struct f2fs_sb_info *sbi) |
39a53e0c | 790 | { |
0daaad97 | 791 | f2fs_down_write(&sbi->cp_rwsem, &sbi->cp_mutex); |
39936837 JK |
792 | } |
793 | ||
e479556b | 794 | static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi) |
39936837 | 795 | { |
e479556b | 796 | up_write(&sbi->cp_rwsem); |
39a53e0c JK |
797 | } |
798 | ||
119ee914 JK |
799 | static inline int __get_cp_reason(struct f2fs_sb_info *sbi) |
800 | { | |
801 | int reason = CP_SYNC; | |
802 | ||
803 | if (test_opt(sbi, FASTBOOT)) | |
804 | reason = CP_FASTBOOT; | |
805 | if (is_sbi_flag_set(sbi, SBI_IS_CLOSE)) | |
806 | reason = CP_UMOUNT; | |
807 | return reason; | |
808 | } | |
809 | ||
810 | static inline bool __remain_node_summaries(int reason) | |
811 | { | |
812 | return (reason == CP_UMOUNT || reason == CP_FASTBOOT); | |
813 | } | |
814 | ||
815 | static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi) | |
816 | { | |
817 | return (is_set_ckpt_flags(F2FS_CKPT(sbi), CP_UMOUNT_FLAG) || | |
818 | is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FASTBOOT_FLAG)); | |
819 | } | |
820 | ||
39a53e0c JK |
821 | /* |
822 | * Check whether the given nid is within node id range. | |
823 | */ | |
064e0823 | 824 | static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid) |
39a53e0c | 825 | { |
d6b7d4b3 CY |
826 | if (unlikely(nid < F2FS_ROOT_INO(sbi))) |
827 | return -EINVAL; | |
cfb271d4 | 828 | if (unlikely(nid >= NM_I(sbi)->max_nid)) |
064e0823 NJ |
829 | return -EINVAL; |
830 | return 0; | |
39a53e0c JK |
831 | } |
832 | ||
833 | #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1 | |
834 | ||
835 | /* | |
836 | * Check whether the inode has blocks or not | |
837 | */ | |
838 | static inline int F2FS_HAS_BLOCKS(struct inode *inode) | |
839 | { | |
840 | if (F2FS_I(inode)->i_xattr_nid) | |
6c311ec6 | 841 | return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1; |
39a53e0c | 842 | else |
6c311ec6 | 843 | return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS; |
39a53e0c JK |
844 | } |
845 | ||
4bc8e9bc CY |
846 | static inline bool f2fs_has_xattr_block(unsigned int ofs) |
847 | { | |
848 | return ofs == XATTR_NODE_OFFSET; | |
849 | } | |
850 | ||
39a53e0c JK |
851 | static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi, |
852 | struct inode *inode, blkcnt_t count) | |
853 | { | |
854 | block_t valid_block_count; | |
855 | ||
856 | spin_lock(&sbi->stat_lock); | |
857 | valid_block_count = | |
858 | sbi->total_valid_block_count + (block_t)count; | |
cfb271d4 | 859 | if (unlikely(valid_block_count > sbi->user_block_count)) { |
39a53e0c JK |
860 | spin_unlock(&sbi->stat_lock); |
861 | return false; | |
862 | } | |
863 | inode->i_blocks += count; | |
864 | sbi->total_valid_block_count = valid_block_count; | |
865 | sbi->alloc_valid_block_count += (block_t)count; | |
866 | spin_unlock(&sbi->stat_lock); | |
867 | return true; | |
868 | } | |
869 | ||
da19b0dc | 870 | static inline void dec_valid_block_count(struct f2fs_sb_info *sbi, |
39a53e0c JK |
871 | struct inode *inode, |
872 | blkcnt_t count) | |
873 | { | |
874 | spin_lock(&sbi->stat_lock); | |
9850cf4a JK |
875 | f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count); |
876 | f2fs_bug_on(sbi, inode->i_blocks < count); | |
39a53e0c JK |
877 | inode->i_blocks -= count; |
878 | sbi->total_valid_block_count -= (block_t)count; | |
879 | spin_unlock(&sbi->stat_lock); | |
39a53e0c JK |
880 | } |
881 | ||
882 | static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type) | |
883 | { | |
884 | atomic_inc(&sbi->nr_pages[count_type]); | |
caf0047e | 885 | set_sbi_flag(sbi, SBI_IS_DIRTY); |
39a53e0c JK |
886 | } |
887 | ||
a7ffdbe2 | 888 | static inline void inode_inc_dirty_pages(struct inode *inode) |
39a53e0c | 889 | { |
a7ffdbe2 JK |
890 | atomic_inc(&F2FS_I(inode)->dirty_pages); |
891 | if (S_ISDIR(inode->i_mode)) | |
892 | inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS); | |
39a53e0c JK |
893 | } |
894 | ||
895 | static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type) | |
896 | { | |
897 | atomic_dec(&sbi->nr_pages[count_type]); | |
898 | } | |
899 | ||
a7ffdbe2 | 900 | static inline void inode_dec_dirty_pages(struct inode *inode) |
39a53e0c | 901 | { |
a7ffdbe2 | 902 | if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode)) |
1fe54f9d JK |
903 | return; |
904 | ||
a7ffdbe2 JK |
905 | atomic_dec(&F2FS_I(inode)->dirty_pages); |
906 | ||
907 | if (S_ISDIR(inode->i_mode)) | |
908 | dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS); | |
39a53e0c JK |
909 | } |
910 | ||
911 | static inline int get_pages(struct f2fs_sb_info *sbi, int count_type) | |
912 | { | |
913 | return atomic_read(&sbi->nr_pages[count_type]); | |
914 | } | |
915 | ||
a7ffdbe2 | 916 | static inline int get_dirty_pages(struct inode *inode) |
f8b2c1f9 | 917 | { |
a7ffdbe2 | 918 | return atomic_read(&F2FS_I(inode)->dirty_pages); |
f8b2c1f9 JK |
919 | } |
920 | ||
5ac206cf NJ |
921 | static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type) |
922 | { | |
923 | unsigned int pages_per_sec = sbi->segs_per_sec * | |
924 | (1 << sbi->log_blocks_per_seg); | |
925 | return ((get_pages(sbi, block_type) + pages_per_sec - 1) | |
926 | >> sbi->log_blocks_per_seg) / sbi->segs_per_sec; | |
927 | } | |
928 | ||
39a53e0c JK |
929 | static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi) |
930 | { | |
8b8343fa | 931 | return sbi->total_valid_block_count; |
39a53e0c JK |
932 | } |
933 | ||
934 | static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag) | |
935 | { | |
936 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
937 | ||
938 | /* return NAT or SIT bitmap */ | |
939 | if (flag == NAT_BITMAP) | |
940 | return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize); | |
941 | else if (flag == SIT_BITMAP) | |
942 | return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize); | |
943 | ||
944 | return 0; | |
945 | } | |
946 | ||
947 | static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag) | |
948 | { | |
949 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
1dbe4152 CL |
950 | int offset; |
951 | ||
952 | if (le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload) > 0) { | |
953 | if (flag == NAT_BITMAP) | |
954 | return &ckpt->sit_nat_version_bitmap; | |
955 | else | |
65b85ccc | 956 | return (unsigned char *)ckpt + F2FS_BLKSIZE; |
1dbe4152 CL |
957 | } else { |
958 | offset = (flag == NAT_BITMAP) ? | |
25ca923b | 959 | le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0; |
1dbe4152 CL |
960 | return &ckpt->sit_nat_version_bitmap + offset; |
961 | } | |
39a53e0c JK |
962 | } |
963 | ||
964 | static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi) | |
965 | { | |
966 | block_t start_addr; | |
967 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
d71b5564 | 968 | unsigned long long ckpt_version = cur_cp_version(ckpt); |
39a53e0c | 969 | |
25ca923b | 970 | start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr); |
39a53e0c JK |
971 | |
972 | /* | |
973 | * odd numbered checkpoint should at cp segment 0 | |
e1c42045 | 974 | * and even segment must be at cp segment 1 |
39a53e0c JK |
975 | */ |
976 | if (!(ckpt_version & 1)) | |
977 | start_addr += sbi->blocks_per_seg; | |
978 | ||
979 | return start_addr; | |
980 | } | |
981 | ||
982 | static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi) | |
983 | { | |
984 | return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum); | |
985 | } | |
986 | ||
987 | static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi, | |
ef86d709 | 988 | struct inode *inode) |
39a53e0c JK |
989 | { |
990 | block_t valid_block_count; | |
991 | unsigned int valid_node_count; | |
992 | ||
993 | spin_lock(&sbi->stat_lock); | |
994 | ||
ef86d709 | 995 | valid_block_count = sbi->total_valid_block_count + 1; |
cfb271d4 | 996 | if (unlikely(valid_block_count > sbi->user_block_count)) { |
39a53e0c JK |
997 | spin_unlock(&sbi->stat_lock); |
998 | return false; | |
999 | } | |
1000 | ||
ef86d709 | 1001 | valid_node_count = sbi->total_valid_node_count + 1; |
cfb271d4 | 1002 | if (unlikely(valid_node_count > sbi->total_node_count)) { |
39a53e0c JK |
1003 | spin_unlock(&sbi->stat_lock); |
1004 | return false; | |
1005 | } | |
1006 | ||
1007 | if (inode) | |
ef86d709 GZ |
1008 | inode->i_blocks++; |
1009 | ||
1010 | sbi->alloc_valid_block_count++; | |
1011 | sbi->total_valid_node_count++; | |
1012 | sbi->total_valid_block_count++; | |
39a53e0c JK |
1013 | spin_unlock(&sbi->stat_lock); |
1014 | ||
1015 | return true; | |
1016 | } | |
1017 | ||
1018 | static inline void dec_valid_node_count(struct f2fs_sb_info *sbi, | |
ef86d709 | 1019 | struct inode *inode) |
39a53e0c JK |
1020 | { |
1021 | spin_lock(&sbi->stat_lock); | |
1022 | ||
9850cf4a JK |
1023 | f2fs_bug_on(sbi, !sbi->total_valid_block_count); |
1024 | f2fs_bug_on(sbi, !sbi->total_valid_node_count); | |
1025 | f2fs_bug_on(sbi, !inode->i_blocks); | |
39a53e0c | 1026 | |
ef86d709 GZ |
1027 | inode->i_blocks--; |
1028 | sbi->total_valid_node_count--; | |
1029 | sbi->total_valid_block_count--; | |
39a53e0c JK |
1030 | |
1031 | spin_unlock(&sbi->stat_lock); | |
1032 | } | |
1033 | ||
1034 | static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi) | |
1035 | { | |
8b8343fa | 1036 | return sbi->total_valid_node_count; |
39a53e0c JK |
1037 | } |
1038 | ||
1039 | static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi) | |
1040 | { | |
1041 | spin_lock(&sbi->stat_lock); | |
9850cf4a | 1042 | f2fs_bug_on(sbi, sbi->total_valid_inode_count == sbi->total_node_count); |
39a53e0c JK |
1043 | sbi->total_valid_inode_count++; |
1044 | spin_unlock(&sbi->stat_lock); | |
1045 | } | |
1046 | ||
0e80220a | 1047 | static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi) |
39a53e0c JK |
1048 | { |
1049 | spin_lock(&sbi->stat_lock); | |
9850cf4a | 1050 | f2fs_bug_on(sbi, !sbi->total_valid_inode_count); |
39a53e0c JK |
1051 | sbi->total_valid_inode_count--; |
1052 | spin_unlock(&sbi->stat_lock); | |
39a53e0c JK |
1053 | } |
1054 | ||
1055 | static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi) | |
1056 | { | |
8b8343fa | 1057 | return sbi->total_valid_inode_count; |
39a53e0c JK |
1058 | } |
1059 | ||
1060 | static inline void f2fs_put_page(struct page *page, int unlock) | |
1061 | { | |
031fa8cc | 1062 | if (!page) |
39a53e0c JK |
1063 | return; |
1064 | ||
1065 | if (unlock) { | |
9850cf4a | 1066 | f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page)); |
39a53e0c JK |
1067 | unlock_page(page); |
1068 | } | |
1069 | page_cache_release(page); | |
1070 | } | |
1071 | ||
1072 | static inline void f2fs_put_dnode(struct dnode_of_data *dn) | |
1073 | { | |
1074 | if (dn->node_page) | |
1075 | f2fs_put_page(dn->node_page, 1); | |
1076 | if (dn->inode_page && dn->node_page != dn->inode_page) | |
1077 | f2fs_put_page(dn->inode_page, 0); | |
1078 | dn->node_page = NULL; | |
1079 | dn->inode_page = NULL; | |
1080 | } | |
1081 | ||
1082 | static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name, | |
e8512d2e | 1083 | size_t size) |
39a53e0c | 1084 | { |
e8512d2e | 1085 | return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL); |
39a53e0c JK |
1086 | } |
1087 | ||
7bd59381 GZ |
1088 | static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep, |
1089 | gfp_t flags) | |
1090 | { | |
1091 | void *entry; | |
1092 | retry: | |
1093 | entry = kmem_cache_alloc(cachep, flags); | |
1094 | if (!entry) { | |
1095 | cond_resched(); | |
1096 | goto retry; | |
1097 | } | |
1098 | ||
1099 | return entry; | |
1100 | } | |
1101 | ||
9be32d72 JK |
1102 | static inline void f2fs_radix_tree_insert(struct radix_tree_root *root, |
1103 | unsigned long index, void *item) | |
1104 | { | |
1105 | while (radix_tree_insert(root, index, item)) | |
1106 | cond_resched(); | |
1107 | } | |
1108 | ||
39a53e0c JK |
1109 | #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino) |
1110 | ||
1111 | static inline bool IS_INODE(struct page *page) | |
1112 | { | |
45590710 | 1113 | struct f2fs_node *p = F2FS_NODE(page); |
39a53e0c JK |
1114 | return RAW_IS_INODE(p); |
1115 | } | |
1116 | ||
1117 | static inline __le32 *blkaddr_in_node(struct f2fs_node *node) | |
1118 | { | |
1119 | return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr; | |
1120 | } | |
1121 | ||
1122 | static inline block_t datablock_addr(struct page *node_page, | |
1123 | unsigned int offset) | |
1124 | { | |
1125 | struct f2fs_node *raw_node; | |
1126 | __le32 *addr_array; | |
45590710 | 1127 | raw_node = F2FS_NODE(node_page); |
39a53e0c JK |
1128 | addr_array = blkaddr_in_node(raw_node); |
1129 | return le32_to_cpu(addr_array[offset]); | |
1130 | } | |
1131 | ||
1132 | static inline int f2fs_test_bit(unsigned int nr, char *addr) | |
1133 | { | |
1134 | int mask; | |
1135 | ||
1136 | addr += (nr >> 3); | |
1137 | mask = 1 << (7 - (nr & 0x07)); | |
1138 | return mask & *addr; | |
1139 | } | |
1140 | ||
52aca074 | 1141 | static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr) |
39a53e0c JK |
1142 | { |
1143 | int mask; | |
1144 | int ret; | |
1145 | ||
1146 | addr += (nr >> 3); | |
1147 | mask = 1 << (7 - (nr & 0x07)); | |
1148 | ret = mask & *addr; | |
1149 | *addr |= mask; | |
1150 | return ret; | |
1151 | } | |
1152 | ||
52aca074 | 1153 | static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr) |
39a53e0c JK |
1154 | { |
1155 | int mask; | |
1156 | int ret; | |
1157 | ||
1158 | addr += (nr >> 3); | |
1159 | mask = 1 << (7 - (nr & 0x07)); | |
1160 | ret = mask & *addr; | |
1161 | *addr &= ~mask; | |
1162 | return ret; | |
1163 | } | |
1164 | ||
c6ac4c0e GZ |
1165 | static inline void f2fs_change_bit(unsigned int nr, char *addr) |
1166 | { | |
1167 | int mask; | |
1168 | ||
1169 | addr += (nr >> 3); | |
1170 | mask = 1 << (7 - (nr & 0x07)); | |
1171 | *addr ^= mask; | |
1172 | } | |
1173 | ||
39a53e0c JK |
1174 | /* used for f2fs_inode_info->flags */ |
1175 | enum { | |
1176 | FI_NEW_INODE, /* indicate newly allocated inode */ | |
b3783873 | 1177 | FI_DIRTY_INODE, /* indicate inode is dirty or not */ |
ed57c27f | 1178 | FI_DIRTY_DIR, /* indicate directory has dirty pages */ |
39a53e0c JK |
1179 | FI_INC_LINK, /* need to increment i_nlink */ |
1180 | FI_ACL_MODE, /* indicate acl mode */ | |
1181 | FI_NO_ALLOC, /* should not allocate any blocks */ | |
699489bb | 1182 | FI_UPDATE_DIR, /* should update inode block for consistency */ |
74d0b917 | 1183 | FI_DELAY_IPUT, /* used for the recovery */ |
c11abd1a | 1184 | FI_NO_EXTENT, /* not to use the extent cache */ |
444c580f | 1185 | FI_INLINE_XATTR, /* used for inline xattr */ |
1001b347 | 1186 | FI_INLINE_DATA, /* used for inline data*/ |
34d67deb | 1187 | FI_INLINE_DENTRY, /* used for inline dentry */ |
fff04f90 JK |
1188 | FI_APPEND_WRITE, /* inode has appended data */ |
1189 | FI_UPDATE_WRITE, /* inode has in-place-update data */ | |
88b88a66 JK |
1190 | FI_NEED_IPU, /* used for ipu per file */ |
1191 | FI_ATOMIC_FILE, /* indicate atomic file */ | |
02a1335f | 1192 | FI_VOLATILE_FILE, /* indicate volatile file */ |
1e84371f | 1193 | FI_DROP_CACHE, /* drop dirty page cache */ |
b3d208f9 | 1194 | FI_DATA_EXIST, /* indicate data exists */ |
39a53e0c JK |
1195 | }; |
1196 | ||
1197 | static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag) | |
1198 | { | |
61e0f2d0 JK |
1199 | if (!test_bit(flag, &fi->flags)) |
1200 | set_bit(flag, &fi->flags); | |
39a53e0c JK |
1201 | } |
1202 | ||
1203 | static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag) | |
1204 | { | |
1205 | return test_bit(flag, &fi->flags); | |
1206 | } | |
1207 | ||
1208 | static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag) | |
1209 | { | |
61e0f2d0 JK |
1210 | if (test_bit(flag, &fi->flags)) |
1211 | clear_bit(flag, &fi->flags); | |
39a53e0c JK |
1212 | } |
1213 | ||
1214 | static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode) | |
1215 | { | |
1216 | fi->i_acl_mode = mode; | |
1217 | set_inode_flag(fi, FI_ACL_MODE); | |
1218 | } | |
1219 | ||
444c580f JK |
1220 | static inline void get_inline_info(struct f2fs_inode_info *fi, |
1221 | struct f2fs_inode *ri) | |
1222 | { | |
1223 | if (ri->i_inline & F2FS_INLINE_XATTR) | |
1224 | set_inode_flag(fi, FI_INLINE_XATTR); | |
1001b347 HL |
1225 | if (ri->i_inline & F2FS_INLINE_DATA) |
1226 | set_inode_flag(fi, FI_INLINE_DATA); | |
34d67deb CY |
1227 | if (ri->i_inline & F2FS_INLINE_DENTRY) |
1228 | set_inode_flag(fi, FI_INLINE_DENTRY); | |
b3d208f9 JK |
1229 | if (ri->i_inline & F2FS_DATA_EXIST) |
1230 | set_inode_flag(fi, FI_DATA_EXIST); | |
444c580f JK |
1231 | } |
1232 | ||
1233 | static inline void set_raw_inline(struct f2fs_inode_info *fi, | |
1234 | struct f2fs_inode *ri) | |
1235 | { | |
1236 | ri->i_inline = 0; | |
1237 | ||
1238 | if (is_inode_flag_set(fi, FI_INLINE_XATTR)) | |
1239 | ri->i_inline |= F2FS_INLINE_XATTR; | |
1001b347 HL |
1240 | if (is_inode_flag_set(fi, FI_INLINE_DATA)) |
1241 | ri->i_inline |= F2FS_INLINE_DATA; | |
34d67deb CY |
1242 | if (is_inode_flag_set(fi, FI_INLINE_DENTRY)) |
1243 | ri->i_inline |= F2FS_INLINE_DENTRY; | |
b3d208f9 JK |
1244 | if (is_inode_flag_set(fi, FI_DATA_EXIST)) |
1245 | ri->i_inline |= F2FS_DATA_EXIST; | |
444c580f JK |
1246 | } |
1247 | ||
987c7c31 CY |
1248 | static inline int f2fs_has_inline_xattr(struct inode *inode) |
1249 | { | |
1250 | return is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR); | |
1251 | } | |
1252 | ||
de93653f JK |
1253 | static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi) |
1254 | { | |
987c7c31 | 1255 | if (f2fs_has_inline_xattr(&fi->vfs_inode)) |
de93653f JK |
1256 | return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS; |
1257 | return DEF_ADDRS_PER_INODE; | |
1258 | } | |
1259 | ||
65985d93 JK |
1260 | static inline void *inline_xattr_addr(struct page *page) |
1261 | { | |
695fd1ed | 1262 | struct f2fs_inode *ri = F2FS_INODE(page); |
65985d93 JK |
1263 | return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE - |
1264 | F2FS_INLINE_XATTR_ADDRS]); | |
1265 | } | |
1266 | ||
1267 | static inline int inline_xattr_size(struct inode *inode) | |
1268 | { | |
987c7c31 | 1269 | if (f2fs_has_inline_xattr(inode)) |
65985d93 JK |
1270 | return F2FS_INLINE_XATTR_ADDRS << 2; |
1271 | else | |
1272 | return 0; | |
1273 | } | |
1274 | ||
0dbdc2ae JK |
1275 | static inline int f2fs_has_inline_data(struct inode *inode) |
1276 | { | |
1277 | return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA); | |
1278 | } | |
1279 | ||
b3d208f9 JK |
1280 | static inline void f2fs_clear_inline_inode(struct inode *inode) |
1281 | { | |
1282 | clear_inode_flag(F2FS_I(inode), FI_INLINE_DATA); | |
1283 | clear_inode_flag(F2FS_I(inode), FI_DATA_EXIST); | |
1284 | } | |
1285 | ||
1286 | static inline int f2fs_exist_data(struct inode *inode) | |
1287 | { | |
1288 | return is_inode_flag_set(F2FS_I(inode), FI_DATA_EXIST); | |
1289 | } | |
1290 | ||
88b88a66 JK |
1291 | static inline bool f2fs_is_atomic_file(struct inode *inode) |
1292 | { | |
1293 | return is_inode_flag_set(F2FS_I(inode), FI_ATOMIC_FILE); | |
1294 | } | |
1295 | ||
02a1335f JK |
1296 | static inline bool f2fs_is_volatile_file(struct inode *inode) |
1297 | { | |
1298 | return is_inode_flag_set(F2FS_I(inode), FI_VOLATILE_FILE); | |
1299 | } | |
1300 | ||
1e84371f JK |
1301 | static inline bool f2fs_is_drop_cache(struct inode *inode) |
1302 | { | |
1303 | return is_inode_flag_set(F2FS_I(inode), FI_DROP_CACHE); | |
1304 | } | |
1305 | ||
1001b347 HL |
1306 | static inline void *inline_data_addr(struct page *page) |
1307 | { | |
695fd1ed | 1308 | struct f2fs_inode *ri = F2FS_INODE(page); |
1001b347 HL |
1309 | return (void *)&(ri->i_addr[1]); |
1310 | } | |
1311 | ||
34d67deb CY |
1312 | static inline int f2fs_has_inline_dentry(struct inode *inode) |
1313 | { | |
1314 | return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DENTRY); | |
1315 | } | |
1316 | ||
9486ba44 JK |
1317 | static inline void f2fs_dentry_kunmap(struct inode *dir, struct page *page) |
1318 | { | |
1319 | if (!f2fs_has_inline_dentry(dir)) | |
1320 | kunmap(page); | |
1321 | } | |
1322 | ||
77888c1e JK |
1323 | static inline int f2fs_readonly(struct super_block *sb) |
1324 | { | |
1325 | return sb->s_flags & MS_RDONLY; | |
1326 | } | |
1327 | ||
1e968fdf JK |
1328 | static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi) |
1329 | { | |
1330 | return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG); | |
1331 | } | |
1332 | ||
744602cf JK |
1333 | static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi) |
1334 | { | |
1335 | set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG); | |
1336 | sbi->sb->s_flags |= MS_RDONLY; | |
1337 | } | |
1338 | ||
a6dda0e6 CH |
1339 | #define get_inode_mode(i) \ |
1340 | ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \ | |
1341 | (F2FS_I(i)->i_acl_mode) : ((i)->i_mode)) | |
1342 | ||
267378d4 CY |
1343 | /* get offset of first page in next direct node */ |
1344 | #define PGOFS_OF_NEXT_DNODE(pgofs, fi) \ | |
1345 | ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \ | |
1346 | (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \ | |
1347 | ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi)) | |
1348 | ||
39a53e0c JK |
1349 | /* |
1350 | * file.c | |
1351 | */ | |
1352 | int f2fs_sync_file(struct file *, loff_t, loff_t, int); | |
1353 | void truncate_data_blocks(struct dnode_of_data *); | |
764aa3e9 | 1354 | int truncate_blocks(struct inode *, u64, bool); |
39a53e0c | 1355 | void f2fs_truncate(struct inode *); |
2d4d9fb5 | 1356 | int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *); |
39a53e0c JK |
1357 | int f2fs_setattr(struct dentry *, struct iattr *); |
1358 | int truncate_hole(struct inode *, pgoff_t, pgoff_t); | |
b292dcab | 1359 | int truncate_data_blocks_range(struct dnode_of_data *, int); |
39a53e0c | 1360 | long f2fs_ioctl(struct file *, unsigned int, unsigned long); |
e9750824 | 1361 | long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long); |
39a53e0c JK |
1362 | |
1363 | /* | |
1364 | * inode.c | |
1365 | */ | |
1366 | void f2fs_set_inode_flags(struct inode *); | |
39a53e0c | 1367 | struct inode *f2fs_iget(struct super_block *, unsigned long); |
4660f9c0 | 1368 | int try_to_free_nats(struct f2fs_sb_info *, int); |
39a53e0c | 1369 | void update_inode(struct inode *, struct page *); |
744602cf | 1370 | void update_inode_page(struct inode *); |
39a53e0c JK |
1371 | int f2fs_write_inode(struct inode *, struct writeback_control *); |
1372 | void f2fs_evict_inode(struct inode *); | |
44c16156 | 1373 | void handle_failed_inode(struct inode *); |
39a53e0c JK |
1374 | |
1375 | /* | |
1376 | * namei.c | |
1377 | */ | |
1378 | struct dentry *f2fs_get_parent(struct dentry *child); | |
1379 | ||
1380 | /* | |
1381 | * dir.c | |
1382 | */ | |
dbeacf02 | 1383 | extern unsigned char f2fs_filetype_table[F2FS_FT_MAX]; |
dbeacf02 | 1384 | void set_de_type(struct f2fs_dir_entry *, struct inode *); |
7b3cd7d6 JK |
1385 | struct f2fs_dir_entry *find_target_dentry(struct qstr *, int *, |
1386 | struct f2fs_dentry_ptr *); | |
1387 | bool f2fs_fill_dentries(struct dir_context *, struct f2fs_dentry_ptr *, | |
1388 | unsigned int); | |
062a3e7b JK |
1389 | void do_make_empty_dir(struct inode *, struct inode *, |
1390 | struct f2fs_dentry_ptr *); | |
dbeacf02 | 1391 | struct page *init_inode_metadata(struct inode *, struct inode *, |
bce8d112 | 1392 | const struct qstr *, struct page *); |
dbeacf02 | 1393 | void update_parent_metadata(struct inode *, struct inode *, unsigned int); |
a82afa20 | 1394 | int room_for_filename(const void *, int, int); |
dbeacf02 | 1395 | void f2fs_drop_nlink(struct inode *, struct inode *, struct page *); |
39a53e0c JK |
1396 | struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *, |
1397 | struct page **); | |
1398 | struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **); | |
1399 | ino_t f2fs_inode_by_name(struct inode *, struct qstr *); | |
1400 | void f2fs_set_link(struct inode *, struct f2fs_dir_entry *, | |
1401 | struct page *, struct inode *); | |
1cd14caf | 1402 | int update_dent_inode(struct inode *, const struct qstr *); |
3b4d732a CY |
1403 | void f2fs_update_dentry(struct inode *, struct f2fs_dentry_ptr *, |
1404 | const struct qstr *, f2fs_hash_t , unsigned int); | |
b7f7a5e0 | 1405 | int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *); |
dbeacf02 CY |
1406 | void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *, |
1407 | struct inode *); | |
b97a9b5d | 1408 | int f2fs_do_tmpfile(struct inode *, struct inode *); |
39a53e0c JK |
1409 | int f2fs_make_empty(struct inode *, struct inode *); |
1410 | bool f2fs_empty_dir(struct inode *); | |
1411 | ||
b7f7a5e0 AV |
1412 | static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode) |
1413 | { | |
1414 | return __f2fs_add_link(dentry->d_parent->d_inode, &dentry->d_name, | |
1415 | inode); | |
1416 | } | |
1417 | ||
39a53e0c JK |
1418 | /* |
1419 | * super.c | |
1420 | */ | |
1421 | int f2fs_sync_fs(struct super_block *, int); | |
a07ef784 NJ |
1422 | extern __printf(3, 4) |
1423 | void f2fs_msg(struct super_block *, const char *, const char *, ...); | |
39a53e0c JK |
1424 | |
1425 | /* | |
1426 | * hash.c | |
1427 | */ | |
eee6160f | 1428 | f2fs_hash_t f2fs_dentry_hash(const struct qstr *); |
39a53e0c JK |
1429 | |
1430 | /* | |
1431 | * node.c | |
1432 | */ | |
1433 | struct dnode_of_data; | |
1434 | struct node_info; | |
1435 | ||
6fb03f3a | 1436 | bool available_free_memory(struct f2fs_sb_info *, int); |
88bd02c9 JK |
1437 | bool is_checkpointed_node(struct f2fs_sb_info *, nid_t); |
1438 | bool has_fsynced_inode(struct f2fs_sb_info *, nid_t); | |
1439 | bool need_inode_block_update(struct f2fs_sb_info *, nid_t); | |
39a53e0c JK |
1440 | void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *); |
1441 | int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int); | |
1442 | int truncate_inode_blocks(struct inode *, pgoff_t); | |
4f16fb0f | 1443 | int truncate_xattr_node(struct inode *, struct page *); |
cfe58f9d | 1444 | int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t); |
58e674d6 | 1445 | void remove_inode_page(struct inode *); |
a014e037 | 1446 | struct page *new_inode_page(struct inode *); |
8ae8f162 | 1447 | struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *); |
39a53e0c JK |
1448 | void ra_node_page(struct f2fs_sb_info *, nid_t); |
1449 | struct page *get_node_page(struct f2fs_sb_info *, pgoff_t); | |
1450 | struct page *get_node_page_ra(struct page *, int); | |
1451 | void sync_inode_page(struct dnode_of_data *); | |
1452 | int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *); | |
1453 | bool alloc_nid(struct f2fs_sb_info *, nid_t *); | |
1454 | void alloc_nid_done(struct f2fs_sb_info *, nid_t); | |
1455 | void alloc_nid_failed(struct f2fs_sb_info *, nid_t); | |
70cfed88 | 1456 | void recover_inline_xattr(struct inode *, struct page *); |
1c35a90e | 1457 | void recover_xattr_data(struct inode *, struct page *, block_t); |
39a53e0c JK |
1458 | int recover_inode_page(struct f2fs_sb_info *, struct page *); |
1459 | int restore_node_summary(struct f2fs_sb_info *, unsigned int, | |
1460 | struct f2fs_summary_block *); | |
1461 | void flush_nat_entries(struct f2fs_sb_info *); | |
1462 | int build_node_manager(struct f2fs_sb_info *); | |
1463 | void destroy_node_manager(struct f2fs_sb_info *); | |
6e6093a8 | 1464 | int __init create_node_manager_caches(void); |
39a53e0c JK |
1465 | void destroy_node_manager_caches(void); |
1466 | ||
1467 | /* | |
1468 | * segment.c | |
1469 | */ | |
88b88a66 JK |
1470 | void register_inmem_page(struct inode *, struct page *); |
1471 | void commit_inmem_pages(struct inode *, bool); | |
39a53e0c | 1472 | void f2fs_balance_fs(struct f2fs_sb_info *); |
4660f9c0 | 1473 | void f2fs_balance_fs_bg(struct f2fs_sb_info *); |
6b4afdd7 | 1474 | int f2fs_issue_flush(struct f2fs_sb_info *); |
2163d198 GZ |
1475 | int create_flush_cmd_control(struct f2fs_sb_info *); |
1476 | void destroy_flush_cmd_control(struct f2fs_sb_info *); | |
39a53e0c | 1477 | void invalidate_blocks(struct f2fs_sb_info *, block_t); |
5e443818 | 1478 | void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t); |
39a53e0c | 1479 | void clear_prefree_segments(struct f2fs_sb_info *); |
4b2fecc8 | 1480 | void release_discard_addrs(struct f2fs_sb_info *); |
cf2271e7 | 1481 | void discard_next_dnode(struct f2fs_sb_info *, block_t); |
3fa06d7b | 1482 | int npages_for_summary_flush(struct f2fs_sb_info *, bool); |
39a53e0c | 1483 | void allocate_new_segments(struct f2fs_sb_info *); |
4b2fecc8 | 1484 | int f2fs_trim_fs(struct f2fs_sb_info *, struct fstrim_range *); |
39a53e0c | 1485 | struct page *get_sum_page(struct f2fs_sb_info *, unsigned int); |
577e3495 | 1486 | void write_meta_page(struct f2fs_sb_info *, struct page *); |
fb5566da | 1487 | void write_node_page(struct f2fs_sb_info *, struct page *, |
cf04e8eb JK |
1488 | unsigned int, struct f2fs_io_info *); |
1489 | void write_data_page(struct page *, struct dnode_of_data *, | |
1490 | struct f2fs_io_info *); | |
1491 | void rewrite_data_page(struct page *, struct f2fs_io_info *); | |
39a53e0c JK |
1492 | void recover_data_page(struct f2fs_sb_info *, struct page *, |
1493 | struct f2fs_summary *, block_t, block_t); | |
bfad7c2d JK |
1494 | void allocate_data_block(struct f2fs_sb_info *, struct page *, |
1495 | block_t, block_t *, struct f2fs_summary *, int); | |
5514f0aa | 1496 | void f2fs_wait_on_page_writeback(struct page *, enum page_type); |
39a53e0c JK |
1497 | void write_data_summaries(struct f2fs_sb_info *, block_t); |
1498 | void write_node_summaries(struct f2fs_sb_info *, block_t); | |
1499 | int lookup_journal_in_cursum(struct f2fs_summary_block *, | |
1500 | int, unsigned int, int); | |
4b2fecc8 | 1501 | void flush_sit_entries(struct f2fs_sb_info *, struct cp_control *); |
39a53e0c | 1502 | int build_segment_manager(struct f2fs_sb_info *); |
39a53e0c | 1503 | void destroy_segment_manager(struct f2fs_sb_info *); |
7fd9e544 JK |
1504 | int __init create_segment_manager_caches(void); |
1505 | void destroy_segment_manager_caches(void); | |
39a53e0c JK |
1506 | |
1507 | /* | |
1508 | * checkpoint.c | |
1509 | */ | |
1510 | struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t); | |
1511 | struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t); | |
4c521f49 | 1512 | int ra_meta_pages(struct f2fs_sb_info *, block_t, int, int); |
635aee1f | 1513 | void ra_meta_pages_cond(struct f2fs_sb_info *, pgoff_t); |
39a53e0c | 1514 | long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long); |
fff04f90 JK |
1515 | void add_dirty_inode(struct f2fs_sb_info *, nid_t, int type); |
1516 | void remove_dirty_inode(struct f2fs_sb_info *, nid_t, int type); | |
6f12ac25 | 1517 | void release_dirty_inode(struct f2fs_sb_info *); |
fff04f90 | 1518 | bool exist_written_data(struct f2fs_sb_info *, nid_t, int); |
cbd56e7d JK |
1519 | int acquire_orphan_inode(struct f2fs_sb_info *); |
1520 | void release_orphan_inode(struct f2fs_sb_info *); | |
39a53e0c JK |
1521 | void add_orphan_inode(struct f2fs_sb_info *, nid_t); |
1522 | void remove_orphan_inode(struct f2fs_sb_info *, nid_t); | |
8f99a946 | 1523 | void recover_orphan_inodes(struct f2fs_sb_info *); |
39a53e0c | 1524 | int get_valid_checkpoint(struct f2fs_sb_info *); |
a7ffdbe2 | 1525 | void update_dirty_page(struct inode *, struct page *); |
5deb8267 | 1526 | void add_dirty_dir_inode(struct inode *); |
39a53e0c JK |
1527 | void remove_dirty_dir_inode(struct inode *); |
1528 | void sync_dirty_dir_inodes(struct f2fs_sb_info *); | |
75ab4cb8 | 1529 | void write_checkpoint(struct f2fs_sb_info *, struct cp_control *); |
6451e041 | 1530 | void init_ino_entry_info(struct f2fs_sb_info *); |
6e6093a8 | 1531 | int __init create_checkpoint_caches(void); |
39a53e0c JK |
1532 | void destroy_checkpoint_caches(void); |
1533 | ||
1534 | /* | |
1535 | * data.c | |
1536 | */ | |
458e6197 | 1537 | void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int); |
cf04e8eb JK |
1538 | int f2fs_submit_page_bio(struct f2fs_sb_info *, struct page *, |
1539 | struct f2fs_io_info *); | |
1540 | void f2fs_submit_page_mbio(struct f2fs_sb_info *, struct page *, | |
458e6197 | 1541 | struct f2fs_io_info *); |
39a53e0c | 1542 | int reserve_new_block(struct dnode_of_data *); |
b600965c | 1543 | int f2fs_reserve_block(struct dnode_of_data *, pgoff_t); |
7e4dde79 | 1544 | void f2fs_update_extent_cache(struct dnode_of_data *); |
c718379b | 1545 | struct page *find_data_page(struct inode *, pgoff_t, bool); |
39a53e0c | 1546 | struct page *get_lock_data_page(struct inode *, pgoff_t); |
64aa7ed9 | 1547 | struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool); |
458e6197 | 1548 | int do_write_data_page(struct page *, struct f2fs_io_info *); |
9ab70134 | 1549 | int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64); |
487261f3 CY |
1550 | void f2fs_invalidate_page(struct page *, unsigned int, unsigned int); |
1551 | int f2fs_release_page(struct page *, gfp_t); | |
39a53e0c JK |
1552 | |
1553 | /* | |
1554 | * gc.c | |
1555 | */ | |
1556 | int start_gc_thread(struct f2fs_sb_info *); | |
1557 | void stop_gc_thread(struct f2fs_sb_info *); | |
de93653f | 1558 | block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *); |
408e9375 | 1559 | int f2fs_gc(struct f2fs_sb_info *); |
39a53e0c | 1560 | void build_gc_manager(struct f2fs_sb_info *); |
39a53e0c JK |
1561 | |
1562 | /* | |
1563 | * recovery.c | |
1564 | */ | |
6ead1142 | 1565 | int recover_fsync_data(struct f2fs_sb_info *); |
39a53e0c JK |
1566 | bool space_for_roll_forward(struct f2fs_sb_info *); |
1567 | ||
1568 | /* | |
1569 | * debug.c | |
1570 | */ | |
1571 | #ifdef CONFIG_F2FS_STAT_FS | |
1572 | struct f2fs_stat_info { | |
1573 | struct list_head stat_list; | |
1574 | struct f2fs_sb_info *sbi; | |
39a53e0c JK |
1575 | int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs; |
1576 | int main_area_segs, main_area_sections, main_area_zones; | |
1577 | int hit_ext, total_ext; | |
1578 | int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta; | |
dd4e4b59 | 1579 | int nats, dirty_nats, sits, dirty_sits, fnids; |
39a53e0c | 1580 | int total_count, utilization; |
d24bdcbf | 1581 | int bg_gc, inline_inode, inline_dir, inmem_pages, wb_pages; |
39a53e0c JK |
1582 | unsigned int valid_count, valid_node_count, valid_inode_count; |
1583 | unsigned int bimodal, avg_vblocks; | |
1584 | int util_free, util_valid, util_invalid; | |
1585 | int rsvd_segs, overp_segs; | |
1586 | int dirty_count, node_pages, meta_pages; | |
942e0be6 | 1587 | int prefree_count, call_count, cp_count; |
39a53e0c JK |
1588 | int tot_segs, node_segs, data_segs, free_segs, free_secs; |
1589 | int tot_blks, data_blks, node_blks; | |
1590 | int curseg[NR_CURSEG_TYPE]; | |
1591 | int cursec[NR_CURSEG_TYPE]; | |
1592 | int curzone[NR_CURSEG_TYPE]; | |
1593 | ||
1594 | unsigned int segment_count[2]; | |
1595 | unsigned int block_count[2]; | |
b9a2c252 | 1596 | unsigned int inplace_count; |
6f0aacbc | 1597 | unsigned base_mem, cache_mem, page_mem; |
39a53e0c JK |
1598 | }; |
1599 | ||
963d4f7d GZ |
1600 | static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi) |
1601 | { | |
6c311ec6 | 1602 | return (struct f2fs_stat_info *)sbi->stat_info; |
963d4f7d GZ |
1603 | } |
1604 | ||
942e0be6 | 1605 | #define stat_inc_cp_count(si) ((si)->cp_count++) |
dcdfff65 JK |
1606 | #define stat_inc_call_count(si) ((si)->call_count++) |
1607 | #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++) | |
1608 | #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++) | |
1609 | #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--) | |
1610 | #define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++) | |
1611 | #define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++) | |
0dbdc2ae JK |
1612 | #define stat_inc_inline_inode(inode) \ |
1613 | do { \ | |
1614 | if (f2fs_has_inline_data(inode)) \ | |
03e14d52 | 1615 | (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \ |
0dbdc2ae JK |
1616 | } while (0) |
1617 | #define stat_dec_inline_inode(inode) \ | |
1618 | do { \ | |
1619 | if (f2fs_has_inline_data(inode)) \ | |
03e14d52 | 1620 | (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \ |
0dbdc2ae | 1621 | } while (0) |
3289c061 JK |
1622 | #define stat_inc_inline_dir(inode) \ |
1623 | do { \ | |
1624 | if (f2fs_has_inline_dentry(inode)) \ | |
03e14d52 | 1625 | (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \ |
3289c061 JK |
1626 | } while (0) |
1627 | #define stat_dec_inline_dir(inode) \ | |
1628 | do { \ | |
1629 | if (f2fs_has_inline_dentry(inode)) \ | |
03e14d52 | 1630 | (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \ |
3289c061 | 1631 | } while (0) |
dcdfff65 JK |
1632 | #define stat_inc_seg_type(sbi, curseg) \ |
1633 | ((sbi)->segment_count[(curseg)->alloc_type]++) | |
1634 | #define stat_inc_block_count(sbi, curseg) \ | |
1635 | ((sbi)->block_count[(curseg)->alloc_type]++) | |
b9a2c252 CL |
1636 | #define stat_inc_inplace_blocks(sbi) \ |
1637 | (atomic_inc(&(sbi)->inplace_count)) | |
39a53e0c JK |
1638 | #define stat_inc_seg_count(sbi, type) \ |
1639 | do { \ | |
963d4f7d | 1640 | struct f2fs_stat_info *si = F2FS_STAT(sbi); \ |
39a53e0c JK |
1641 | (si)->tot_segs++; \ |
1642 | if (type == SUM_TYPE_DATA) \ | |
1643 | si->data_segs++; \ | |
1644 | else \ | |
1645 | si->node_segs++; \ | |
1646 | } while (0) | |
1647 | ||
1648 | #define stat_inc_tot_blk_count(si, blks) \ | |
1649 | (si->tot_blks += (blks)) | |
1650 | ||
1651 | #define stat_inc_data_blk_count(sbi, blks) \ | |
1652 | do { \ | |
963d4f7d | 1653 | struct f2fs_stat_info *si = F2FS_STAT(sbi); \ |
39a53e0c JK |
1654 | stat_inc_tot_blk_count(si, blks); \ |
1655 | si->data_blks += (blks); \ | |
1656 | } while (0) | |
1657 | ||
1658 | #define stat_inc_node_blk_count(sbi, blks) \ | |
1659 | do { \ | |
963d4f7d | 1660 | struct f2fs_stat_info *si = F2FS_STAT(sbi); \ |
39a53e0c JK |
1661 | stat_inc_tot_blk_count(si, blks); \ |
1662 | si->node_blks += (blks); \ | |
1663 | } while (0) | |
1664 | ||
1665 | int f2fs_build_stats(struct f2fs_sb_info *); | |
1666 | void f2fs_destroy_stats(struct f2fs_sb_info *); | |
6e6093a8 | 1667 | void __init f2fs_create_root_stats(void); |
4589d25d | 1668 | void f2fs_destroy_root_stats(void); |
39a53e0c | 1669 | #else |
942e0be6 | 1670 | #define stat_inc_cp_count(si) |
39a53e0c | 1671 | #define stat_inc_call_count(si) |
dcdfff65 JK |
1672 | #define stat_inc_bggc_count(si) |
1673 | #define stat_inc_dirty_dir(sbi) | |
1674 | #define stat_dec_dirty_dir(sbi) | |
1675 | #define stat_inc_total_hit(sb) | |
1676 | #define stat_inc_read_hit(sb) | |
0dbdc2ae JK |
1677 | #define stat_inc_inline_inode(inode) |
1678 | #define stat_dec_inline_inode(inode) | |
3289c061 JK |
1679 | #define stat_inc_inline_dir(inode) |
1680 | #define stat_dec_inline_dir(inode) | |
dcdfff65 JK |
1681 | #define stat_inc_seg_type(sbi, curseg) |
1682 | #define stat_inc_block_count(sbi, curseg) | |
b9a2c252 | 1683 | #define stat_inc_inplace_blocks(sbi) |
39a53e0c JK |
1684 | #define stat_inc_seg_count(si, type) |
1685 | #define stat_inc_tot_blk_count(si, blks) | |
1686 | #define stat_inc_data_blk_count(si, blks) | |
1687 | #define stat_inc_node_blk_count(sbi, blks) | |
1688 | ||
1689 | static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; } | |
1690 | static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { } | |
6e6093a8 | 1691 | static inline void __init f2fs_create_root_stats(void) { } |
4589d25d | 1692 | static inline void f2fs_destroy_root_stats(void) { } |
39a53e0c JK |
1693 | #endif |
1694 | ||
1695 | extern const struct file_operations f2fs_dir_operations; | |
1696 | extern const struct file_operations f2fs_file_operations; | |
1697 | extern const struct inode_operations f2fs_file_inode_operations; | |
1698 | extern const struct address_space_operations f2fs_dblock_aops; | |
1699 | extern const struct address_space_operations f2fs_node_aops; | |
1700 | extern const struct address_space_operations f2fs_meta_aops; | |
1701 | extern const struct inode_operations f2fs_dir_inode_operations; | |
1702 | extern const struct inode_operations f2fs_symlink_inode_operations; | |
1703 | extern const struct inode_operations f2fs_special_inode_operations; | |
29e7043f | 1704 | extern struct kmem_cache *inode_entry_slab; |
1001b347 | 1705 | |
e18c65b2 HL |
1706 | /* |
1707 | * inline.c | |
1708 | */ | |
e18c65b2 | 1709 | bool f2fs_may_inline(struct inode *); |
b3d208f9 | 1710 | void read_inline_data(struct page *, struct page *); |
e18c65b2 | 1711 | int f2fs_read_inline_data(struct inode *, struct page *); |
b3d208f9 JK |
1712 | int f2fs_convert_inline_page(struct dnode_of_data *, struct page *); |
1713 | int f2fs_convert_inline_inode(struct inode *); | |
1714 | int f2fs_write_inline_data(struct inode *, struct page *); | |
0342fd30 | 1715 | bool recover_inline_data(struct inode *, struct page *); |
201a05be CY |
1716 | struct f2fs_dir_entry *find_in_inline_dir(struct inode *, struct qstr *, |
1717 | struct page **); | |
1718 | struct f2fs_dir_entry *f2fs_parent_inline_dir(struct inode *, struct page **); | |
1719 | int make_empty_inline_dir(struct inode *inode, struct inode *, struct page *); | |
1720 | int f2fs_add_inline_entry(struct inode *, const struct qstr *, struct inode *); | |
1721 | void f2fs_delete_inline_entry(struct f2fs_dir_entry *, struct page *, | |
1722 | struct inode *, struct inode *); | |
1723 | bool f2fs_empty_inline_dir(struct inode *); | |
1724 | int f2fs_read_inline_dir(struct file *, struct dir_context *); | |
39a53e0c | 1725 | #endif |