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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); \ | |
31 | sbi->need_fsck = true; \ | |
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, | |
103 | CP_SYNC, | |
4b2fecc8 | 104 | CP_DISCARD, |
75ab4cb8 JK |
105 | }; |
106 | ||
107 | struct cp_control { | |
108 | int reason; | |
4b2fecc8 JK |
109 | __u64 trim_start; |
110 | __u64 trim_end; | |
111 | __u64 trim_minlen; | |
112 | __u64 trimmed; | |
75ab4cb8 JK |
113 | }; |
114 | ||
662befda | 115 | /* |
81c1a0f1 | 116 | * For CP/NAT/SIT/SSA readahead |
662befda CY |
117 | */ |
118 | enum { | |
119 | META_CP, | |
120 | META_NAT, | |
81c1a0f1 | 121 | META_SIT, |
4c521f49 JK |
122 | META_SSA, |
123 | META_POR, | |
662befda CY |
124 | }; |
125 | ||
6451e041 JK |
126 | /* for the list of ino */ |
127 | enum { | |
128 | ORPHAN_INO, /* for orphan ino list */ | |
fff04f90 JK |
129 | APPEND_INO, /* for append ino list */ |
130 | UPDATE_INO, /* for update ino list */ | |
6451e041 JK |
131 | MAX_INO_ENTRY, /* max. list */ |
132 | }; | |
133 | ||
134 | struct ino_entry { | |
39a53e0c JK |
135 | struct list_head list; /* list head */ |
136 | nid_t ino; /* inode number */ | |
137 | }; | |
138 | ||
06292073 CY |
139 | /* |
140 | * for the list of directory inodes or gc inodes. | |
141 | * NOTE: there are two slab users for this structure, if we add/modify/delete | |
142 | * fields in structure for one of slab users, it may affect fields or size of | |
143 | * other one, in this condition, it's better to split both of slab and related | |
144 | * data structure. | |
145 | */ | |
146 | struct inode_entry { | |
39a53e0c JK |
147 | struct list_head list; /* list head */ |
148 | struct inode *inode; /* vfs inode pointer */ | |
149 | }; | |
150 | ||
7fd9e544 JK |
151 | /* for the list of blockaddresses to be discarded */ |
152 | struct discard_entry { | |
153 | struct list_head list; /* list head */ | |
154 | block_t blkaddr; /* block address to be discarded */ | |
155 | int len; /* # of consecutive blocks of the discard */ | |
156 | }; | |
157 | ||
39a53e0c JK |
158 | /* for the list of fsync inodes, used only during recovery */ |
159 | struct fsync_inode_entry { | |
160 | struct list_head list; /* list head */ | |
161 | struct inode *inode; /* vfs inode pointer */ | |
c52e1b10 JK |
162 | block_t blkaddr; /* block address locating the last fsync */ |
163 | block_t last_dentry; /* block address locating the last dentry */ | |
164 | block_t last_inode; /* block address locating the last inode */ | |
39a53e0c JK |
165 | }; |
166 | ||
167 | #define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats)) | |
168 | #define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits)) | |
169 | ||
170 | #define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne) | |
171 | #define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid) | |
172 | #define sit_in_journal(sum, i) (sum->sit_j.entries[i].se) | |
173 | #define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno) | |
174 | ||
309cc2b6 JK |
175 | #define MAX_NAT_JENTRIES(sum) (NAT_JOURNAL_ENTRIES - nats_in_cursum(sum)) |
176 | #define MAX_SIT_JENTRIES(sum) (SIT_JOURNAL_ENTRIES - sits_in_cursum(sum)) | |
177 | ||
39a53e0c JK |
178 | static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i) |
179 | { | |
180 | int before = nats_in_cursum(rs); | |
181 | rs->n_nats = cpu_to_le16(before + i); | |
182 | return before; | |
183 | } | |
184 | ||
185 | static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i) | |
186 | { | |
187 | int before = sits_in_cursum(rs); | |
188 | rs->n_sits = cpu_to_le16(before + i); | |
189 | return before; | |
190 | } | |
191 | ||
184a5cd2 CY |
192 | static inline bool __has_cursum_space(struct f2fs_summary_block *sum, int size, |
193 | int type) | |
194 | { | |
195 | if (type == NAT_JOURNAL) | |
309cc2b6 JK |
196 | return size <= MAX_NAT_JENTRIES(sum); |
197 | return size <= MAX_SIT_JENTRIES(sum); | |
184a5cd2 CY |
198 | } |
199 | ||
e9750824 NJ |
200 | /* |
201 | * ioctl commands | |
202 | */ | |
88b88a66 JK |
203 | #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS |
204 | #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS | |
205 | ||
206 | #define F2FS_IOCTL_MAGIC 0xf5 | |
207 | #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1) | |
208 | #define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2) | |
02a1335f | 209 | #define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3) |
1e84371f JK |
210 | #define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4) |
211 | #define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5) | |
e9750824 NJ |
212 | |
213 | #if defined(__KERNEL__) && defined(CONFIG_COMPAT) | |
214 | /* | |
215 | * ioctl commands in 32 bit emulation | |
216 | */ | |
217 | #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS | |
218 | #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS | |
219 | #endif | |
220 | ||
39a53e0c JK |
221 | /* |
222 | * For INODE and NODE manager | |
223 | */ | |
7b3cd7d6 JK |
224 | /* for directory operations */ |
225 | struct f2fs_dentry_ptr { | |
226 | const void *bitmap; | |
227 | struct f2fs_dir_entry *dentry; | |
228 | __u8 (*filename)[F2FS_SLOT_LEN]; | |
229 | int max; | |
230 | }; | |
231 | ||
232 | static inline void make_dentry_ptr(struct f2fs_dentry_ptr *d, | |
233 | void *src, int type) | |
234 | { | |
235 | if (type == 1) { | |
236 | struct f2fs_dentry_block *t = (struct f2fs_dentry_block *)src; | |
237 | d->max = NR_DENTRY_IN_BLOCK; | |
238 | d->bitmap = &t->dentry_bitmap; | |
239 | d->dentry = t->dentry; | |
240 | d->filename = t->filename; | |
241 | } else { | |
242 | struct f2fs_inline_dentry *t = (struct f2fs_inline_dentry *)src; | |
243 | d->max = NR_INLINE_DENTRY; | |
244 | d->bitmap = &t->dentry_bitmap; | |
245 | d->dentry = t->dentry; | |
246 | d->filename = t->filename; | |
247 | } | |
248 | } | |
249 | ||
dbe6a5ff JK |
250 | /* |
251 | * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1 | |
252 | * as its node offset to distinguish from index node blocks. | |
253 | * But some bits are used to mark the node block. | |
254 | */ | |
255 | #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \ | |
256 | >> OFFSET_BIT_SHIFT) | |
266e97a8 JK |
257 | enum { |
258 | ALLOC_NODE, /* allocate a new node page if needed */ | |
259 | LOOKUP_NODE, /* look up a node without readahead */ | |
260 | LOOKUP_NODE_RA, /* | |
261 | * look up a node with readahead called | |
4f4124d0 | 262 | * by get_data_block. |
39a53e0c | 263 | */ |
266e97a8 JK |
264 | }; |
265 | ||
39a53e0c JK |
266 | #define F2FS_LINK_MAX 32000 /* maximum link count per file */ |
267 | ||
817202d9 CY |
268 | #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */ |
269 | ||
39a53e0c | 270 | /* for in-memory extent cache entry */ |
c11abd1a JK |
271 | #define F2FS_MIN_EXTENT_LEN 16 /* minimum extent length */ |
272 | ||
39a53e0c JK |
273 | struct extent_info { |
274 | rwlock_t ext_lock; /* rwlock for consistency */ | |
275 | unsigned int fofs; /* start offset in a file */ | |
276 | u32 blk_addr; /* start block address of the extent */ | |
111d2495 | 277 | unsigned int len; /* length of the extent */ |
39a53e0c JK |
278 | }; |
279 | ||
280 | /* | |
281 | * i_advise uses FADVISE_XXX_BIT. We can add additional hints later. | |
282 | */ | |
283 | #define FADVISE_COLD_BIT 0x01 | |
354a3399 | 284 | #define FADVISE_LOST_PINO_BIT 0x02 |
39a53e0c | 285 | |
ab9fa662 JK |
286 | #define DEF_DIR_LEVEL 0 |
287 | ||
39a53e0c JK |
288 | struct f2fs_inode_info { |
289 | struct inode vfs_inode; /* serve a vfs inode */ | |
290 | unsigned long i_flags; /* keep an inode flags for ioctl */ | |
291 | unsigned char i_advise; /* use to give file attribute hints */ | |
38431545 | 292 | unsigned char i_dir_level; /* use for dentry level for large dir */ |
39a53e0c | 293 | unsigned int i_current_depth; /* use only in directory structure */ |
6666e6aa | 294 | unsigned int i_pino; /* parent inode number */ |
39a53e0c JK |
295 | umode_t i_acl_mode; /* keep file acl mode temporarily */ |
296 | ||
297 | /* Use below internally in f2fs*/ | |
298 | unsigned long flags; /* use to pass per-file flags */ | |
d928bfbf | 299 | struct rw_semaphore i_sem; /* protect fi info */ |
a7ffdbe2 | 300 | atomic_t dirty_pages; /* # of dirty pages */ |
39a53e0c JK |
301 | f2fs_hash_t chash; /* hash value of given file name */ |
302 | unsigned int clevel; /* maximum level of given file name */ | |
303 | nid_t i_xattr_nid; /* node id that contains xattrs */ | |
e518ff81 | 304 | unsigned long long xattr_ver; /* cp version of xattr modification */ |
39a53e0c | 305 | struct extent_info ext; /* in-memory extent cache entry */ |
06292073 | 306 | struct inode_entry *dirty_dir; /* the pointer of dirty dir */ |
88b88a66 | 307 | |
34ba94ba | 308 | struct radix_tree_root inmem_root; /* radix tree for inmem pages */ |
88b88a66 JK |
309 | struct list_head inmem_pages; /* inmemory pages managed by f2fs */ |
310 | struct mutex inmem_lock; /* lock for inmemory pages */ | |
39a53e0c JK |
311 | }; |
312 | ||
313 | static inline void get_extent_info(struct extent_info *ext, | |
314 | struct f2fs_extent i_ext) | |
315 | { | |
316 | write_lock(&ext->ext_lock); | |
317 | ext->fofs = le32_to_cpu(i_ext.fofs); | |
318 | ext->blk_addr = le32_to_cpu(i_ext.blk_addr); | |
319 | ext->len = le32_to_cpu(i_ext.len); | |
320 | write_unlock(&ext->ext_lock); | |
321 | } | |
322 | ||
323 | static inline void set_raw_extent(struct extent_info *ext, | |
324 | struct f2fs_extent *i_ext) | |
325 | { | |
326 | read_lock(&ext->ext_lock); | |
327 | i_ext->fofs = cpu_to_le32(ext->fofs); | |
328 | i_ext->blk_addr = cpu_to_le32(ext->blk_addr); | |
329 | i_ext->len = cpu_to_le32(ext->len); | |
330 | read_unlock(&ext->ext_lock); | |
331 | } | |
332 | ||
333 | struct f2fs_nm_info { | |
334 | block_t nat_blkaddr; /* base disk address of NAT */ | |
335 | nid_t max_nid; /* maximum possible node ids */ | |
7ee0eeab | 336 | nid_t available_nids; /* maximum available node ids */ |
39a53e0c | 337 | nid_t next_scan_nid; /* the next nid to be scanned */ |
cdfc41c1 | 338 | unsigned int ram_thresh; /* control the memory footprint */ |
39a53e0c JK |
339 | |
340 | /* NAT cache management */ | |
341 | struct radix_tree_root nat_root;/* root of the nat entry cache */ | |
309cc2b6 | 342 | struct radix_tree_root nat_set_root;/* root of the nat set cache */ |
8b26ef98 | 343 | struct rw_semaphore nat_tree_lock; /* protect nat_tree_lock */ |
39a53e0c | 344 | struct list_head nat_entries; /* cached nat entry list (clean) */ |
309cc2b6 | 345 | unsigned int nat_cnt; /* the # of cached nat entries */ |
aec71382 | 346 | unsigned int dirty_nat_cnt; /* total num of nat entries in set */ |
39a53e0c JK |
347 | |
348 | /* free node ids management */ | |
8a7ed66a | 349 | struct radix_tree_root free_nid_root;/* root of the free_nid cache */ |
39a53e0c JK |
350 | struct list_head free_nid_list; /* a list for free nids */ |
351 | spinlock_t free_nid_list_lock; /* protect free nid list */ | |
352 | unsigned int fcnt; /* the number of free node id */ | |
353 | struct mutex build_lock; /* lock for build free nids */ | |
354 | ||
355 | /* for checkpoint */ | |
356 | char *nat_bitmap; /* NAT bitmap pointer */ | |
357 | int bitmap_size; /* bitmap size */ | |
358 | }; | |
359 | ||
360 | /* | |
361 | * this structure is used as one of function parameters. | |
362 | * all the information are dedicated to a given direct node block determined | |
363 | * by the data offset in a file. | |
364 | */ | |
365 | struct dnode_of_data { | |
366 | struct inode *inode; /* vfs inode pointer */ | |
367 | struct page *inode_page; /* its inode page, NULL is possible */ | |
368 | struct page *node_page; /* cached direct node page */ | |
369 | nid_t nid; /* node id of the direct node block */ | |
370 | unsigned int ofs_in_node; /* data offset in the node page */ | |
371 | bool inode_page_locked; /* inode page is locked or not */ | |
372 | block_t data_blkaddr; /* block address of the node block */ | |
373 | }; | |
374 | ||
375 | static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode, | |
376 | struct page *ipage, struct page *npage, nid_t nid) | |
377 | { | |
d66d1f76 | 378 | memset(dn, 0, sizeof(*dn)); |
39a53e0c JK |
379 | dn->inode = inode; |
380 | dn->inode_page = ipage; | |
381 | dn->node_page = npage; | |
382 | dn->nid = nid; | |
39a53e0c JK |
383 | } |
384 | ||
385 | /* | |
386 | * For SIT manager | |
387 | * | |
388 | * By default, there are 6 active log areas across the whole main area. | |
389 | * When considering hot and cold data separation to reduce cleaning overhead, | |
390 | * we split 3 for data logs and 3 for node logs as hot, warm, and cold types, | |
391 | * respectively. | |
392 | * In the current design, you should not change the numbers intentionally. | |
393 | * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6 | |
394 | * logs individually according to the underlying devices. (default: 6) | |
395 | * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for | |
396 | * data and 8 for node logs. | |
397 | */ | |
398 | #define NR_CURSEG_DATA_TYPE (3) | |
399 | #define NR_CURSEG_NODE_TYPE (3) | |
400 | #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE) | |
401 | ||
402 | enum { | |
403 | CURSEG_HOT_DATA = 0, /* directory entry blocks */ | |
404 | CURSEG_WARM_DATA, /* data blocks */ | |
405 | CURSEG_COLD_DATA, /* multimedia or GCed data blocks */ | |
406 | CURSEG_HOT_NODE, /* direct node blocks of directory files */ | |
407 | CURSEG_WARM_NODE, /* direct node blocks of normal files */ | |
408 | CURSEG_COLD_NODE, /* indirect node blocks */ | |
38aa0889 JK |
409 | NO_CHECK_TYPE, |
410 | CURSEG_DIRECT_IO, /* to use for the direct IO path */ | |
39a53e0c JK |
411 | }; |
412 | ||
6b4afdd7 | 413 | struct flush_cmd { |
6b4afdd7 | 414 | struct completion wait; |
721bd4d5 | 415 | struct llist_node llnode; |
6b4afdd7 JK |
416 | int ret; |
417 | }; | |
418 | ||
a688b9d9 GZ |
419 | struct flush_cmd_control { |
420 | struct task_struct *f2fs_issue_flush; /* flush thread */ | |
421 | wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */ | |
721bd4d5 GZ |
422 | struct llist_head issue_list; /* list for command issue */ |
423 | struct llist_node *dispatch_list; /* list for command dispatch */ | |
a688b9d9 GZ |
424 | }; |
425 | ||
39a53e0c JK |
426 | struct f2fs_sm_info { |
427 | struct sit_info *sit_info; /* whole segment information */ | |
428 | struct free_segmap_info *free_info; /* free segment information */ | |
429 | struct dirty_seglist_info *dirty_info; /* dirty segment information */ | |
430 | struct curseg_info *curseg_array; /* active segment information */ | |
431 | ||
39a53e0c JK |
432 | block_t seg0_blkaddr; /* block address of 0'th segment */ |
433 | block_t main_blkaddr; /* start block address of main area */ | |
434 | block_t ssa_blkaddr; /* start block address of SSA area */ | |
435 | ||
436 | unsigned int segment_count; /* total # of segments */ | |
437 | unsigned int main_segments; /* # of segments in main area */ | |
438 | unsigned int reserved_segments; /* # of reserved segments */ | |
439 | unsigned int ovp_segments; /* # of overprovision segments */ | |
81eb8d6e JK |
440 | |
441 | /* a threshold to reclaim prefree segments */ | |
442 | unsigned int rec_prefree_segments; | |
7fd9e544 JK |
443 | |
444 | /* for small discard management */ | |
445 | struct list_head discard_list; /* 4KB discard list */ | |
446 | int nr_discards; /* # of discards in the list */ | |
447 | int max_discards; /* max. discards to be issued */ | |
216fbd64 | 448 | |
184a5cd2 CY |
449 | struct list_head sit_entry_set; /* sit entry set list */ |
450 | ||
216fbd64 JK |
451 | unsigned int ipu_policy; /* in-place-update policy */ |
452 | unsigned int min_ipu_util; /* in-place-update threshold */ | |
c1ce1b02 | 453 | unsigned int min_fsync_blocks; /* threshold for fsync */ |
6b4afdd7 JK |
454 | |
455 | /* for flush command control */ | |
a688b9d9 GZ |
456 | struct flush_cmd_control *cmd_control_info; |
457 | ||
39a53e0c JK |
458 | }; |
459 | ||
39a53e0c JK |
460 | /* |
461 | * For superblock | |
462 | */ | |
463 | /* | |
464 | * COUNT_TYPE for monitoring | |
465 | * | |
466 | * f2fs monitors the number of several block types such as on-writeback, | |
467 | * dirty dentry blocks, dirty node blocks, and dirty meta blocks. | |
468 | */ | |
469 | enum count_type { | |
470 | F2FS_WRITEBACK, | |
471 | F2FS_DIRTY_DENTS, | |
472 | F2FS_DIRTY_NODES, | |
473 | F2FS_DIRTY_META, | |
8dcf2ff7 | 474 | F2FS_INMEM_PAGES, |
39a53e0c JK |
475 | NR_COUNT_TYPE, |
476 | }; | |
477 | ||
39a53e0c | 478 | /* |
e1c42045 | 479 | * The below are the page types of bios used in submit_bio(). |
39a53e0c JK |
480 | * The available types are: |
481 | * DATA User data pages. It operates as async mode. | |
482 | * NODE Node pages. It operates as async mode. | |
483 | * META FS metadata pages such as SIT, NAT, CP. | |
484 | * NR_PAGE_TYPE The number of page types. | |
485 | * META_FLUSH Make sure the previous pages are written | |
486 | * with waiting the bio's completion | |
487 | * ... Only can be used with META. | |
488 | */ | |
7d5e5109 | 489 | #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type)) |
39a53e0c JK |
490 | enum page_type { |
491 | DATA, | |
492 | NODE, | |
493 | META, | |
494 | NR_PAGE_TYPE, | |
495 | META_FLUSH, | |
496 | }; | |
497 | ||
458e6197 | 498 | struct f2fs_io_info { |
7e8f2308 GZ |
499 | enum page_type type; /* contains DATA/NODE/META/META_FLUSH */ |
500 | int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */ | |
cf04e8eb | 501 | block_t blk_addr; /* block address to be written */ |
458e6197 JK |
502 | }; |
503 | ||
93dfe2ac | 504 | #define is_read_io(rw) (((rw) & 1) == READ) |
1ff7bd3b | 505 | struct f2fs_bio_info { |
458e6197 | 506 | struct f2fs_sb_info *sbi; /* f2fs superblock */ |
1ff7bd3b JK |
507 | struct bio *bio; /* bios to merge */ |
508 | sector_t last_block_in_bio; /* last block number */ | |
458e6197 | 509 | struct f2fs_io_info fio; /* store buffered io info. */ |
df0f8dc0 | 510 | struct rw_semaphore io_rwsem; /* blocking op for bio */ |
1ff7bd3b JK |
511 | }; |
512 | ||
67298804 CY |
513 | /* for inner inode cache management */ |
514 | struct inode_management { | |
515 | struct radix_tree_root ino_root; /* ino entry array */ | |
516 | spinlock_t ino_lock; /* for ino entry lock */ | |
517 | struct list_head ino_list; /* inode list head */ | |
518 | unsigned long ino_num; /* number of entries */ | |
519 | }; | |
520 | ||
39a53e0c JK |
521 | struct f2fs_sb_info { |
522 | struct super_block *sb; /* pointer to VFS super block */ | |
5e176d54 | 523 | struct proc_dir_entry *s_proc; /* proc entry */ |
39a53e0c JK |
524 | struct buffer_head *raw_super_buf; /* buffer head of raw sb */ |
525 | struct f2fs_super_block *raw_super; /* raw super block pointer */ | |
526 | int s_dirty; /* dirty flag for checkpoint */ | |
2ae4c673 | 527 | bool need_fsck; /* need fsck.f2fs to fix */ |
39a53e0c JK |
528 | |
529 | /* for node-related operations */ | |
530 | struct f2fs_nm_info *nm_info; /* node manager */ | |
531 | struct inode *node_inode; /* cache node blocks */ | |
532 | ||
533 | /* for segment-related operations */ | |
534 | struct f2fs_sm_info *sm_info; /* segment manager */ | |
1ff7bd3b JK |
535 | |
536 | /* for bio operations */ | |
924b720b | 537 | struct f2fs_bio_info read_io; /* for read bios */ |
1ff7bd3b | 538 | struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */ |
39a53e0c JK |
539 | |
540 | /* for checkpoint */ | |
541 | struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */ | |
542 | struct inode *meta_inode; /* cache meta blocks */ | |
39936837 | 543 | struct mutex cp_mutex; /* checkpoint procedure lock */ |
e479556b | 544 | struct rw_semaphore cp_rwsem; /* blocking FS operations */ |
b3582c68 | 545 | struct rw_semaphore node_write; /* locking node writes */ |
39a53e0c | 546 | struct mutex writepages; /* mutex for writepages() */ |
aabe5136 | 547 | bool por_doing; /* recovery is doing or not */ |
fb51b5ef | 548 | wait_queue_head_t cp_wait; |
39a53e0c | 549 | |
67298804 | 550 | struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */ |
6451e041 JK |
551 | |
552 | /* for orphan inode, use 0'th array */ | |
0d47c1ad | 553 | unsigned int max_orphans; /* max orphan inodes */ |
39a53e0c JK |
554 | |
555 | /* for directory inode management */ | |
556 | struct list_head dir_inode_list; /* dir inode list */ | |
557 | spinlock_t dir_inode_lock; /* for dir inode list lock */ | |
39a53e0c | 558 | |
e1c42045 | 559 | /* basic filesystem units */ |
39a53e0c JK |
560 | unsigned int log_sectors_per_block; /* log2 sectors per block */ |
561 | unsigned int log_blocksize; /* log2 block size */ | |
562 | unsigned int blocksize; /* block size */ | |
563 | unsigned int root_ino_num; /* root inode number*/ | |
564 | unsigned int node_ino_num; /* node inode number*/ | |
565 | unsigned int meta_ino_num; /* meta inode number*/ | |
566 | unsigned int log_blocks_per_seg; /* log2 blocks per segment */ | |
567 | unsigned int blocks_per_seg; /* blocks per segment */ | |
568 | unsigned int segs_per_sec; /* segments per section */ | |
569 | unsigned int secs_per_zone; /* sections per zone */ | |
570 | unsigned int total_sections; /* total section count */ | |
571 | unsigned int total_node_count; /* total node block count */ | |
572 | unsigned int total_valid_node_count; /* valid node block count */ | |
573 | unsigned int total_valid_inode_count; /* valid inode count */ | |
574 | int active_logs; /* # of active logs */ | |
ab9fa662 | 575 | int dir_level; /* directory level */ |
39a53e0c JK |
576 | |
577 | block_t user_block_count; /* # of user blocks */ | |
578 | block_t total_valid_block_count; /* # of valid blocks */ | |
579 | block_t alloc_valid_block_count; /* # of allocated blocks */ | |
580 | block_t last_valid_block_count; /* for recovery */ | |
581 | u32 s_next_generation; /* for NFS support */ | |
582 | atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */ | |
583 | ||
584 | struct f2fs_mount_info mount_opt; /* mount options */ | |
585 | ||
586 | /* for cleaning operations */ | |
587 | struct mutex gc_mutex; /* mutex for GC */ | |
588 | struct f2fs_gc_kthread *gc_thread; /* GC thread */ | |
5ec4e49f | 589 | unsigned int cur_victim_sec; /* current victim section num */ |
39a53e0c | 590 | |
b1c57c1c JK |
591 | /* maximum # of trials to find a victim segment for SSR and GC */ |
592 | unsigned int max_victim_search; | |
593 | ||
39a53e0c JK |
594 | /* |
595 | * for stat information. | |
596 | * one is for the LFS mode, and the other is for the SSR mode. | |
597 | */ | |
35b09d82 | 598 | #ifdef CONFIG_F2FS_STAT_FS |
39a53e0c JK |
599 | struct f2fs_stat_info *stat_info; /* FS status information */ |
600 | unsigned int segment_count[2]; /* # of allocated segments */ | |
601 | unsigned int block_count[2]; /* # of allocated blocks */ | |
b9a2c252 | 602 | atomic_t inplace_count; /* # of inplace update */ |
39a53e0c | 603 | int total_hit_ext, read_hit_ext; /* extent cache hit ratio */ |
03e14d52 CY |
604 | atomic_t inline_inode; /* # of inline_data inodes */ |
605 | atomic_t inline_dir; /* # of inline_dentry inodes */ | |
39a53e0c | 606 | int bg_gc; /* background gc calls */ |
35b09d82 NJ |
607 | unsigned int n_dirty_dirs; /* # of dir inodes */ |
608 | #endif | |
609 | unsigned int last_victim[2]; /* last victim segment # */ | |
39a53e0c | 610 | spinlock_t stat_lock; /* lock for stat operations */ |
b59d0bae NJ |
611 | |
612 | /* For sysfs suppport */ | |
613 | struct kobject s_kobj; | |
614 | struct completion s_kobj_unregister; | |
39a53e0c JK |
615 | }; |
616 | ||
617 | /* | |
618 | * Inline functions | |
619 | */ | |
620 | static inline struct f2fs_inode_info *F2FS_I(struct inode *inode) | |
621 | { | |
622 | return container_of(inode, struct f2fs_inode_info, vfs_inode); | |
623 | } | |
624 | ||
625 | static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb) | |
626 | { | |
627 | return sb->s_fs_info; | |
628 | } | |
629 | ||
4081363f JK |
630 | static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode) |
631 | { | |
632 | return F2FS_SB(inode->i_sb); | |
633 | } | |
634 | ||
635 | static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping) | |
636 | { | |
637 | return F2FS_I_SB(mapping->host); | |
638 | } | |
639 | ||
640 | static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page) | |
641 | { | |
642 | return F2FS_M_SB(page->mapping); | |
643 | } | |
644 | ||
39a53e0c JK |
645 | static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi) |
646 | { | |
647 | return (struct f2fs_super_block *)(sbi->raw_super); | |
648 | } | |
649 | ||
650 | static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi) | |
651 | { | |
652 | return (struct f2fs_checkpoint *)(sbi->ckpt); | |
653 | } | |
654 | ||
45590710 GZ |
655 | static inline struct f2fs_node *F2FS_NODE(struct page *page) |
656 | { | |
657 | return (struct f2fs_node *)page_address(page); | |
658 | } | |
659 | ||
58bfaf44 JK |
660 | static inline struct f2fs_inode *F2FS_INODE(struct page *page) |
661 | { | |
662 | return &((struct f2fs_node *)page_address(page))->i; | |
663 | } | |
664 | ||
39a53e0c JK |
665 | static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi) |
666 | { | |
667 | return (struct f2fs_nm_info *)(sbi->nm_info); | |
668 | } | |
669 | ||
670 | static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi) | |
671 | { | |
672 | return (struct f2fs_sm_info *)(sbi->sm_info); | |
673 | } | |
674 | ||
675 | static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi) | |
676 | { | |
677 | return (struct sit_info *)(SM_I(sbi)->sit_info); | |
678 | } | |
679 | ||
680 | static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi) | |
681 | { | |
682 | return (struct free_segmap_info *)(SM_I(sbi)->free_info); | |
683 | } | |
684 | ||
685 | static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi) | |
686 | { | |
687 | return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info); | |
688 | } | |
689 | ||
9df27d98 GZ |
690 | static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi) |
691 | { | |
692 | return sbi->meta_inode->i_mapping; | |
693 | } | |
694 | ||
4ef51a8f JK |
695 | static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi) |
696 | { | |
697 | return sbi->node_inode->i_mapping; | |
698 | } | |
699 | ||
39a53e0c JK |
700 | static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info *sbi) |
701 | { | |
702 | sbi->s_dirty = 1; | |
703 | } | |
704 | ||
705 | static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info *sbi) | |
706 | { | |
707 | sbi->s_dirty = 0; | |
708 | } | |
709 | ||
d71b5564 JK |
710 | static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp) |
711 | { | |
712 | return le64_to_cpu(cp->checkpoint_ver); | |
713 | } | |
714 | ||
25ca923b JK |
715 | static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) |
716 | { | |
717 | unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); | |
718 | return ckpt_flags & f; | |
719 | } | |
720 | ||
721 | static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) | |
722 | { | |
723 | unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); | |
724 | ckpt_flags |= f; | |
725 | cp->ckpt_flags = cpu_to_le32(ckpt_flags); | |
726 | } | |
727 | ||
728 | static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) | |
729 | { | |
730 | unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); | |
731 | ckpt_flags &= (~f); | |
732 | cp->ckpt_flags = cpu_to_le32(ckpt_flags); | |
733 | } | |
734 | ||
e479556b | 735 | static inline void f2fs_lock_op(struct f2fs_sb_info *sbi) |
39936837 | 736 | { |
e479556b | 737 | down_read(&sbi->cp_rwsem); |
39936837 JK |
738 | } |
739 | ||
e479556b | 740 | static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi) |
39a53e0c | 741 | { |
e479556b | 742 | up_read(&sbi->cp_rwsem); |
39a53e0c JK |
743 | } |
744 | ||
e479556b | 745 | static inline void f2fs_lock_all(struct f2fs_sb_info *sbi) |
39a53e0c | 746 | { |
0daaad97 | 747 | f2fs_down_write(&sbi->cp_rwsem, &sbi->cp_mutex); |
39936837 JK |
748 | } |
749 | ||
e479556b | 750 | static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi) |
39936837 | 751 | { |
e479556b | 752 | up_write(&sbi->cp_rwsem); |
39a53e0c JK |
753 | } |
754 | ||
755 | /* | |
756 | * Check whether the given nid is within node id range. | |
757 | */ | |
064e0823 | 758 | static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid) |
39a53e0c | 759 | { |
d6b7d4b3 CY |
760 | if (unlikely(nid < F2FS_ROOT_INO(sbi))) |
761 | return -EINVAL; | |
cfb271d4 | 762 | if (unlikely(nid >= NM_I(sbi)->max_nid)) |
064e0823 NJ |
763 | return -EINVAL; |
764 | return 0; | |
39a53e0c JK |
765 | } |
766 | ||
767 | #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1 | |
768 | ||
769 | /* | |
770 | * Check whether the inode has blocks or not | |
771 | */ | |
772 | static inline int F2FS_HAS_BLOCKS(struct inode *inode) | |
773 | { | |
774 | if (F2FS_I(inode)->i_xattr_nid) | |
6c311ec6 | 775 | return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1; |
39a53e0c | 776 | else |
6c311ec6 | 777 | return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS; |
39a53e0c JK |
778 | } |
779 | ||
4bc8e9bc CY |
780 | static inline bool f2fs_has_xattr_block(unsigned int ofs) |
781 | { | |
782 | return ofs == XATTR_NODE_OFFSET; | |
783 | } | |
784 | ||
39a53e0c JK |
785 | static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi, |
786 | struct inode *inode, blkcnt_t count) | |
787 | { | |
788 | block_t valid_block_count; | |
789 | ||
790 | spin_lock(&sbi->stat_lock); | |
791 | valid_block_count = | |
792 | sbi->total_valid_block_count + (block_t)count; | |
cfb271d4 | 793 | if (unlikely(valid_block_count > sbi->user_block_count)) { |
39a53e0c JK |
794 | spin_unlock(&sbi->stat_lock); |
795 | return false; | |
796 | } | |
797 | inode->i_blocks += count; | |
798 | sbi->total_valid_block_count = valid_block_count; | |
799 | sbi->alloc_valid_block_count += (block_t)count; | |
800 | spin_unlock(&sbi->stat_lock); | |
801 | return true; | |
802 | } | |
803 | ||
da19b0dc | 804 | static inline void dec_valid_block_count(struct f2fs_sb_info *sbi, |
39a53e0c JK |
805 | struct inode *inode, |
806 | blkcnt_t count) | |
807 | { | |
808 | spin_lock(&sbi->stat_lock); | |
9850cf4a JK |
809 | f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count); |
810 | f2fs_bug_on(sbi, inode->i_blocks < count); | |
39a53e0c JK |
811 | inode->i_blocks -= count; |
812 | sbi->total_valid_block_count -= (block_t)count; | |
813 | spin_unlock(&sbi->stat_lock); | |
39a53e0c JK |
814 | } |
815 | ||
816 | static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type) | |
817 | { | |
818 | atomic_inc(&sbi->nr_pages[count_type]); | |
819 | F2FS_SET_SB_DIRT(sbi); | |
820 | } | |
821 | ||
a7ffdbe2 | 822 | static inline void inode_inc_dirty_pages(struct inode *inode) |
39a53e0c | 823 | { |
a7ffdbe2 JK |
824 | atomic_inc(&F2FS_I(inode)->dirty_pages); |
825 | if (S_ISDIR(inode->i_mode)) | |
826 | inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS); | |
39a53e0c JK |
827 | } |
828 | ||
829 | static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type) | |
830 | { | |
831 | atomic_dec(&sbi->nr_pages[count_type]); | |
832 | } | |
833 | ||
a7ffdbe2 | 834 | static inline void inode_dec_dirty_pages(struct inode *inode) |
39a53e0c | 835 | { |
a7ffdbe2 | 836 | if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode)) |
1fe54f9d JK |
837 | return; |
838 | ||
a7ffdbe2 JK |
839 | atomic_dec(&F2FS_I(inode)->dirty_pages); |
840 | ||
841 | if (S_ISDIR(inode->i_mode)) | |
842 | dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS); | |
39a53e0c JK |
843 | } |
844 | ||
845 | static inline int get_pages(struct f2fs_sb_info *sbi, int count_type) | |
846 | { | |
847 | return atomic_read(&sbi->nr_pages[count_type]); | |
848 | } | |
849 | ||
a7ffdbe2 | 850 | static inline int get_dirty_pages(struct inode *inode) |
f8b2c1f9 | 851 | { |
a7ffdbe2 | 852 | return atomic_read(&F2FS_I(inode)->dirty_pages); |
f8b2c1f9 JK |
853 | } |
854 | ||
5ac206cf NJ |
855 | static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type) |
856 | { | |
857 | unsigned int pages_per_sec = sbi->segs_per_sec * | |
858 | (1 << sbi->log_blocks_per_seg); | |
859 | return ((get_pages(sbi, block_type) + pages_per_sec - 1) | |
860 | >> sbi->log_blocks_per_seg) / sbi->segs_per_sec; | |
861 | } | |
862 | ||
39a53e0c JK |
863 | static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi) |
864 | { | |
8b8343fa | 865 | return sbi->total_valid_block_count; |
39a53e0c JK |
866 | } |
867 | ||
868 | static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag) | |
869 | { | |
870 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
871 | ||
872 | /* return NAT or SIT bitmap */ | |
873 | if (flag == NAT_BITMAP) | |
874 | return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize); | |
875 | else if (flag == SIT_BITMAP) | |
876 | return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize); | |
877 | ||
878 | return 0; | |
879 | } | |
880 | ||
881 | static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag) | |
882 | { | |
883 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
1dbe4152 CL |
884 | int offset; |
885 | ||
886 | if (le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload) > 0) { | |
887 | if (flag == NAT_BITMAP) | |
888 | return &ckpt->sit_nat_version_bitmap; | |
889 | else | |
65b85ccc | 890 | return (unsigned char *)ckpt + F2FS_BLKSIZE; |
1dbe4152 CL |
891 | } else { |
892 | offset = (flag == NAT_BITMAP) ? | |
25ca923b | 893 | le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0; |
1dbe4152 CL |
894 | return &ckpt->sit_nat_version_bitmap + offset; |
895 | } | |
39a53e0c JK |
896 | } |
897 | ||
898 | static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi) | |
899 | { | |
900 | block_t start_addr; | |
901 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
d71b5564 | 902 | unsigned long long ckpt_version = cur_cp_version(ckpt); |
39a53e0c | 903 | |
25ca923b | 904 | start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr); |
39a53e0c JK |
905 | |
906 | /* | |
907 | * odd numbered checkpoint should at cp segment 0 | |
e1c42045 | 908 | * and even segment must be at cp segment 1 |
39a53e0c JK |
909 | */ |
910 | if (!(ckpt_version & 1)) | |
911 | start_addr += sbi->blocks_per_seg; | |
912 | ||
913 | return start_addr; | |
914 | } | |
915 | ||
916 | static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi) | |
917 | { | |
918 | return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum); | |
919 | } | |
920 | ||
921 | static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi, | |
ef86d709 | 922 | struct inode *inode) |
39a53e0c JK |
923 | { |
924 | block_t valid_block_count; | |
925 | unsigned int valid_node_count; | |
926 | ||
927 | spin_lock(&sbi->stat_lock); | |
928 | ||
ef86d709 | 929 | valid_block_count = sbi->total_valid_block_count + 1; |
cfb271d4 | 930 | if (unlikely(valid_block_count > sbi->user_block_count)) { |
39a53e0c JK |
931 | spin_unlock(&sbi->stat_lock); |
932 | return false; | |
933 | } | |
934 | ||
ef86d709 | 935 | valid_node_count = sbi->total_valid_node_count + 1; |
cfb271d4 | 936 | if (unlikely(valid_node_count > sbi->total_node_count)) { |
39a53e0c JK |
937 | spin_unlock(&sbi->stat_lock); |
938 | return false; | |
939 | } | |
940 | ||
941 | if (inode) | |
ef86d709 GZ |
942 | inode->i_blocks++; |
943 | ||
944 | sbi->alloc_valid_block_count++; | |
945 | sbi->total_valid_node_count++; | |
946 | sbi->total_valid_block_count++; | |
39a53e0c JK |
947 | spin_unlock(&sbi->stat_lock); |
948 | ||
949 | return true; | |
950 | } | |
951 | ||
952 | static inline void dec_valid_node_count(struct f2fs_sb_info *sbi, | |
ef86d709 | 953 | struct inode *inode) |
39a53e0c JK |
954 | { |
955 | spin_lock(&sbi->stat_lock); | |
956 | ||
9850cf4a JK |
957 | f2fs_bug_on(sbi, !sbi->total_valid_block_count); |
958 | f2fs_bug_on(sbi, !sbi->total_valid_node_count); | |
959 | f2fs_bug_on(sbi, !inode->i_blocks); | |
39a53e0c | 960 | |
ef86d709 GZ |
961 | inode->i_blocks--; |
962 | sbi->total_valid_node_count--; | |
963 | sbi->total_valid_block_count--; | |
39a53e0c JK |
964 | |
965 | spin_unlock(&sbi->stat_lock); | |
966 | } | |
967 | ||
968 | static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi) | |
969 | { | |
8b8343fa | 970 | return sbi->total_valid_node_count; |
39a53e0c JK |
971 | } |
972 | ||
973 | static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi) | |
974 | { | |
975 | spin_lock(&sbi->stat_lock); | |
9850cf4a | 976 | f2fs_bug_on(sbi, sbi->total_valid_inode_count == sbi->total_node_count); |
39a53e0c JK |
977 | sbi->total_valid_inode_count++; |
978 | spin_unlock(&sbi->stat_lock); | |
979 | } | |
980 | ||
0e80220a | 981 | static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi) |
39a53e0c JK |
982 | { |
983 | spin_lock(&sbi->stat_lock); | |
9850cf4a | 984 | f2fs_bug_on(sbi, !sbi->total_valid_inode_count); |
39a53e0c JK |
985 | sbi->total_valid_inode_count--; |
986 | spin_unlock(&sbi->stat_lock); | |
39a53e0c JK |
987 | } |
988 | ||
989 | static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi) | |
990 | { | |
8b8343fa | 991 | return sbi->total_valid_inode_count; |
39a53e0c JK |
992 | } |
993 | ||
994 | static inline void f2fs_put_page(struct page *page, int unlock) | |
995 | { | |
031fa8cc | 996 | if (!page) |
39a53e0c JK |
997 | return; |
998 | ||
999 | if (unlock) { | |
9850cf4a | 1000 | f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page)); |
39a53e0c JK |
1001 | unlock_page(page); |
1002 | } | |
1003 | page_cache_release(page); | |
1004 | } | |
1005 | ||
1006 | static inline void f2fs_put_dnode(struct dnode_of_data *dn) | |
1007 | { | |
1008 | if (dn->node_page) | |
1009 | f2fs_put_page(dn->node_page, 1); | |
1010 | if (dn->inode_page && dn->node_page != dn->inode_page) | |
1011 | f2fs_put_page(dn->inode_page, 0); | |
1012 | dn->node_page = NULL; | |
1013 | dn->inode_page = NULL; | |
1014 | } | |
1015 | ||
1016 | static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name, | |
e8512d2e | 1017 | size_t size) |
39a53e0c | 1018 | { |
e8512d2e | 1019 | return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL); |
39a53e0c JK |
1020 | } |
1021 | ||
7bd59381 GZ |
1022 | static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep, |
1023 | gfp_t flags) | |
1024 | { | |
1025 | void *entry; | |
1026 | retry: | |
1027 | entry = kmem_cache_alloc(cachep, flags); | |
1028 | if (!entry) { | |
1029 | cond_resched(); | |
1030 | goto retry; | |
1031 | } | |
1032 | ||
1033 | return entry; | |
1034 | } | |
1035 | ||
9be32d72 JK |
1036 | static inline void f2fs_radix_tree_insert(struct radix_tree_root *root, |
1037 | unsigned long index, void *item) | |
1038 | { | |
1039 | while (radix_tree_insert(root, index, item)) | |
1040 | cond_resched(); | |
1041 | } | |
1042 | ||
39a53e0c JK |
1043 | #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino) |
1044 | ||
1045 | static inline bool IS_INODE(struct page *page) | |
1046 | { | |
45590710 | 1047 | struct f2fs_node *p = F2FS_NODE(page); |
39a53e0c JK |
1048 | return RAW_IS_INODE(p); |
1049 | } | |
1050 | ||
1051 | static inline __le32 *blkaddr_in_node(struct f2fs_node *node) | |
1052 | { | |
1053 | return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr; | |
1054 | } | |
1055 | ||
1056 | static inline block_t datablock_addr(struct page *node_page, | |
1057 | unsigned int offset) | |
1058 | { | |
1059 | struct f2fs_node *raw_node; | |
1060 | __le32 *addr_array; | |
45590710 | 1061 | raw_node = F2FS_NODE(node_page); |
39a53e0c JK |
1062 | addr_array = blkaddr_in_node(raw_node); |
1063 | return le32_to_cpu(addr_array[offset]); | |
1064 | } | |
1065 | ||
1066 | static inline int f2fs_test_bit(unsigned int nr, char *addr) | |
1067 | { | |
1068 | int mask; | |
1069 | ||
1070 | addr += (nr >> 3); | |
1071 | mask = 1 << (7 - (nr & 0x07)); | |
1072 | return mask & *addr; | |
1073 | } | |
1074 | ||
52aca074 | 1075 | static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr) |
39a53e0c JK |
1076 | { |
1077 | int mask; | |
1078 | int ret; | |
1079 | ||
1080 | addr += (nr >> 3); | |
1081 | mask = 1 << (7 - (nr & 0x07)); | |
1082 | ret = mask & *addr; | |
1083 | *addr |= mask; | |
1084 | return ret; | |
1085 | } | |
1086 | ||
52aca074 | 1087 | static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr) |
39a53e0c JK |
1088 | { |
1089 | int mask; | |
1090 | int ret; | |
1091 | ||
1092 | addr += (nr >> 3); | |
1093 | mask = 1 << (7 - (nr & 0x07)); | |
1094 | ret = mask & *addr; | |
1095 | *addr &= ~mask; | |
1096 | return ret; | |
1097 | } | |
1098 | ||
c6ac4c0e GZ |
1099 | static inline void f2fs_change_bit(unsigned int nr, char *addr) |
1100 | { | |
1101 | int mask; | |
1102 | ||
1103 | addr += (nr >> 3); | |
1104 | mask = 1 << (7 - (nr & 0x07)); | |
1105 | *addr ^= mask; | |
1106 | } | |
1107 | ||
39a53e0c JK |
1108 | /* used for f2fs_inode_info->flags */ |
1109 | enum { | |
1110 | FI_NEW_INODE, /* indicate newly allocated inode */ | |
b3783873 | 1111 | FI_DIRTY_INODE, /* indicate inode is dirty or not */ |
ed57c27f | 1112 | FI_DIRTY_DIR, /* indicate directory has dirty pages */ |
39a53e0c JK |
1113 | FI_INC_LINK, /* need to increment i_nlink */ |
1114 | FI_ACL_MODE, /* indicate acl mode */ | |
1115 | FI_NO_ALLOC, /* should not allocate any blocks */ | |
699489bb | 1116 | FI_UPDATE_DIR, /* should update inode block for consistency */ |
74d0b917 | 1117 | FI_DELAY_IPUT, /* used for the recovery */ |
c11abd1a | 1118 | FI_NO_EXTENT, /* not to use the extent cache */ |
444c580f | 1119 | FI_INLINE_XATTR, /* used for inline xattr */ |
1001b347 | 1120 | FI_INLINE_DATA, /* used for inline data*/ |
34d67deb | 1121 | FI_INLINE_DENTRY, /* used for inline dentry */ |
fff04f90 JK |
1122 | FI_APPEND_WRITE, /* inode has appended data */ |
1123 | FI_UPDATE_WRITE, /* inode has in-place-update data */ | |
88b88a66 JK |
1124 | FI_NEED_IPU, /* used for ipu per file */ |
1125 | FI_ATOMIC_FILE, /* indicate atomic file */ | |
02a1335f | 1126 | FI_VOLATILE_FILE, /* indicate volatile file */ |
1e84371f | 1127 | FI_DROP_CACHE, /* drop dirty page cache */ |
b3d208f9 | 1128 | FI_DATA_EXIST, /* indicate data exists */ |
39a53e0c JK |
1129 | }; |
1130 | ||
1131 | static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag) | |
1132 | { | |
61e0f2d0 JK |
1133 | if (!test_bit(flag, &fi->flags)) |
1134 | set_bit(flag, &fi->flags); | |
39a53e0c JK |
1135 | } |
1136 | ||
1137 | static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag) | |
1138 | { | |
1139 | return test_bit(flag, &fi->flags); | |
1140 | } | |
1141 | ||
1142 | static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag) | |
1143 | { | |
61e0f2d0 JK |
1144 | if (test_bit(flag, &fi->flags)) |
1145 | clear_bit(flag, &fi->flags); | |
39a53e0c JK |
1146 | } |
1147 | ||
1148 | static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode) | |
1149 | { | |
1150 | fi->i_acl_mode = mode; | |
1151 | set_inode_flag(fi, FI_ACL_MODE); | |
1152 | } | |
1153 | ||
444c580f JK |
1154 | static inline void get_inline_info(struct f2fs_inode_info *fi, |
1155 | struct f2fs_inode *ri) | |
1156 | { | |
1157 | if (ri->i_inline & F2FS_INLINE_XATTR) | |
1158 | set_inode_flag(fi, FI_INLINE_XATTR); | |
1001b347 HL |
1159 | if (ri->i_inline & F2FS_INLINE_DATA) |
1160 | set_inode_flag(fi, FI_INLINE_DATA); | |
34d67deb CY |
1161 | if (ri->i_inline & F2FS_INLINE_DENTRY) |
1162 | set_inode_flag(fi, FI_INLINE_DENTRY); | |
b3d208f9 JK |
1163 | if (ri->i_inline & F2FS_DATA_EXIST) |
1164 | set_inode_flag(fi, FI_DATA_EXIST); | |
444c580f JK |
1165 | } |
1166 | ||
1167 | static inline void set_raw_inline(struct f2fs_inode_info *fi, | |
1168 | struct f2fs_inode *ri) | |
1169 | { | |
1170 | ri->i_inline = 0; | |
1171 | ||
1172 | if (is_inode_flag_set(fi, FI_INLINE_XATTR)) | |
1173 | ri->i_inline |= F2FS_INLINE_XATTR; | |
1001b347 HL |
1174 | if (is_inode_flag_set(fi, FI_INLINE_DATA)) |
1175 | ri->i_inline |= F2FS_INLINE_DATA; | |
34d67deb CY |
1176 | if (is_inode_flag_set(fi, FI_INLINE_DENTRY)) |
1177 | ri->i_inline |= F2FS_INLINE_DENTRY; | |
b3d208f9 JK |
1178 | if (is_inode_flag_set(fi, FI_DATA_EXIST)) |
1179 | ri->i_inline |= F2FS_DATA_EXIST; | |
444c580f JK |
1180 | } |
1181 | ||
987c7c31 CY |
1182 | static inline int f2fs_has_inline_xattr(struct inode *inode) |
1183 | { | |
1184 | return is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR); | |
1185 | } | |
1186 | ||
de93653f JK |
1187 | static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi) |
1188 | { | |
987c7c31 | 1189 | if (f2fs_has_inline_xattr(&fi->vfs_inode)) |
de93653f JK |
1190 | return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS; |
1191 | return DEF_ADDRS_PER_INODE; | |
1192 | } | |
1193 | ||
65985d93 JK |
1194 | static inline void *inline_xattr_addr(struct page *page) |
1195 | { | |
695fd1ed | 1196 | struct f2fs_inode *ri = F2FS_INODE(page); |
65985d93 JK |
1197 | return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE - |
1198 | F2FS_INLINE_XATTR_ADDRS]); | |
1199 | } | |
1200 | ||
1201 | static inline int inline_xattr_size(struct inode *inode) | |
1202 | { | |
987c7c31 | 1203 | if (f2fs_has_inline_xattr(inode)) |
65985d93 JK |
1204 | return F2FS_INLINE_XATTR_ADDRS << 2; |
1205 | else | |
1206 | return 0; | |
1207 | } | |
1208 | ||
0dbdc2ae JK |
1209 | static inline int f2fs_has_inline_data(struct inode *inode) |
1210 | { | |
1211 | return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA); | |
1212 | } | |
1213 | ||
b3d208f9 JK |
1214 | static inline void f2fs_clear_inline_inode(struct inode *inode) |
1215 | { | |
1216 | clear_inode_flag(F2FS_I(inode), FI_INLINE_DATA); | |
1217 | clear_inode_flag(F2FS_I(inode), FI_DATA_EXIST); | |
1218 | } | |
1219 | ||
1220 | static inline int f2fs_exist_data(struct inode *inode) | |
1221 | { | |
1222 | return is_inode_flag_set(F2FS_I(inode), FI_DATA_EXIST); | |
1223 | } | |
1224 | ||
88b88a66 JK |
1225 | static inline bool f2fs_is_atomic_file(struct inode *inode) |
1226 | { | |
1227 | return is_inode_flag_set(F2FS_I(inode), FI_ATOMIC_FILE); | |
1228 | } | |
1229 | ||
02a1335f JK |
1230 | static inline bool f2fs_is_volatile_file(struct inode *inode) |
1231 | { | |
1232 | return is_inode_flag_set(F2FS_I(inode), FI_VOLATILE_FILE); | |
1233 | } | |
1234 | ||
1e84371f JK |
1235 | static inline bool f2fs_is_drop_cache(struct inode *inode) |
1236 | { | |
1237 | return is_inode_flag_set(F2FS_I(inode), FI_DROP_CACHE); | |
1238 | } | |
1239 | ||
1001b347 HL |
1240 | static inline void *inline_data_addr(struct page *page) |
1241 | { | |
695fd1ed | 1242 | struct f2fs_inode *ri = F2FS_INODE(page); |
1001b347 HL |
1243 | return (void *)&(ri->i_addr[1]); |
1244 | } | |
1245 | ||
34d67deb CY |
1246 | static inline int f2fs_has_inline_dentry(struct inode *inode) |
1247 | { | |
1248 | return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DENTRY); | |
1249 | } | |
1250 | ||
1251 | static inline void *inline_dentry_addr(struct page *page) | |
1252 | { | |
1253 | struct f2fs_inode *ri = F2FS_INODE(page); | |
1254 | return (void *)&(ri->i_addr[1]); | |
1255 | } | |
1256 | ||
9486ba44 JK |
1257 | static inline void f2fs_dentry_kunmap(struct inode *dir, struct page *page) |
1258 | { | |
1259 | if (!f2fs_has_inline_dentry(dir)) | |
1260 | kunmap(page); | |
1261 | } | |
1262 | ||
77888c1e JK |
1263 | static inline int f2fs_readonly(struct super_block *sb) |
1264 | { | |
1265 | return sb->s_flags & MS_RDONLY; | |
1266 | } | |
1267 | ||
1e968fdf JK |
1268 | static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi) |
1269 | { | |
1270 | return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG); | |
1271 | } | |
1272 | ||
744602cf JK |
1273 | static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi) |
1274 | { | |
1275 | set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG); | |
1276 | sbi->sb->s_flags |= MS_RDONLY; | |
1277 | } | |
1278 | ||
a6dda0e6 CH |
1279 | #define get_inode_mode(i) \ |
1280 | ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \ | |
1281 | (F2FS_I(i)->i_acl_mode) : ((i)->i_mode)) | |
1282 | ||
267378d4 CY |
1283 | /* get offset of first page in next direct node */ |
1284 | #define PGOFS_OF_NEXT_DNODE(pgofs, fi) \ | |
1285 | ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \ | |
1286 | (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \ | |
1287 | ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi)) | |
1288 | ||
39a53e0c JK |
1289 | /* |
1290 | * file.c | |
1291 | */ | |
1292 | int f2fs_sync_file(struct file *, loff_t, loff_t, int); | |
1293 | void truncate_data_blocks(struct dnode_of_data *); | |
764aa3e9 | 1294 | int truncate_blocks(struct inode *, u64, bool); |
39a53e0c | 1295 | void f2fs_truncate(struct inode *); |
2d4d9fb5 | 1296 | int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *); |
39a53e0c JK |
1297 | int f2fs_setattr(struct dentry *, struct iattr *); |
1298 | int truncate_hole(struct inode *, pgoff_t, pgoff_t); | |
b292dcab | 1299 | int truncate_data_blocks_range(struct dnode_of_data *, int); |
39a53e0c | 1300 | long f2fs_ioctl(struct file *, unsigned int, unsigned long); |
e9750824 | 1301 | long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long); |
39a53e0c JK |
1302 | |
1303 | /* | |
1304 | * inode.c | |
1305 | */ | |
1306 | void f2fs_set_inode_flags(struct inode *); | |
39a53e0c | 1307 | struct inode *f2fs_iget(struct super_block *, unsigned long); |
4660f9c0 | 1308 | int try_to_free_nats(struct f2fs_sb_info *, int); |
39a53e0c | 1309 | void update_inode(struct inode *, struct page *); |
744602cf | 1310 | void update_inode_page(struct inode *); |
39a53e0c JK |
1311 | int f2fs_write_inode(struct inode *, struct writeback_control *); |
1312 | void f2fs_evict_inode(struct inode *); | |
44c16156 | 1313 | void handle_failed_inode(struct inode *); |
39a53e0c JK |
1314 | |
1315 | /* | |
1316 | * namei.c | |
1317 | */ | |
1318 | struct dentry *f2fs_get_parent(struct dentry *child); | |
1319 | ||
1320 | /* | |
1321 | * dir.c | |
1322 | */ | |
dbeacf02 | 1323 | extern unsigned char f2fs_filetype_table[F2FS_FT_MAX]; |
dbeacf02 | 1324 | void set_de_type(struct f2fs_dir_entry *, struct inode *); |
7b3cd7d6 JK |
1325 | struct f2fs_dir_entry *find_target_dentry(struct qstr *, int *, |
1326 | struct f2fs_dentry_ptr *); | |
1327 | bool f2fs_fill_dentries(struct dir_context *, struct f2fs_dentry_ptr *, | |
1328 | unsigned int); | |
062a3e7b JK |
1329 | void do_make_empty_dir(struct inode *, struct inode *, |
1330 | struct f2fs_dentry_ptr *); | |
dbeacf02 | 1331 | struct page *init_inode_metadata(struct inode *, struct inode *, |
bce8d112 | 1332 | const struct qstr *, struct page *); |
dbeacf02 | 1333 | void update_parent_metadata(struct inode *, struct inode *, unsigned int); |
a82afa20 | 1334 | int room_for_filename(const void *, int, int); |
dbeacf02 | 1335 | void f2fs_drop_nlink(struct inode *, struct inode *, struct page *); |
39a53e0c JK |
1336 | struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *, |
1337 | struct page **); | |
1338 | struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **); | |
1339 | ino_t f2fs_inode_by_name(struct inode *, struct qstr *); | |
1340 | void f2fs_set_link(struct inode *, struct f2fs_dir_entry *, | |
1341 | struct page *, struct inode *); | |
1cd14caf | 1342 | int update_dent_inode(struct inode *, const struct qstr *); |
b7f7a5e0 | 1343 | int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *); |
dbeacf02 CY |
1344 | void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *, |
1345 | struct inode *); | |
b97a9b5d | 1346 | int f2fs_do_tmpfile(struct inode *, struct inode *); |
39a53e0c JK |
1347 | int f2fs_make_empty(struct inode *, struct inode *); |
1348 | bool f2fs_empty_dir(struct inode *); | |
1349 | ||
b7f7a5e0 AV |
1350 | static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode) |
1351 | { | |
1352 | return __f2fs_add_link(dentry->d_parent->d_inode, &dentry->d_name, | |
1353 | inode); | |
1354 | } | |
1355 | ||
39a53e0c JK |
1356 | /* |
1357 | * super.c | |
1358 | */ | |
1359 | int f2fs_sync_fs(struct super_block *, int); | |
a07ef784 NJ |
1360 | extern __printf(3, 4) |
1361 | void f2fs_msg(struct super_block *, const char *, const char *, ...); | |
39a53e0c JK |
1362 | |
1363 | /* | |
1364 | * hash.c | |
1365 | */ | |
eee6160f | 1366 | f2fs_hash_t f2fs_dentry_hash(const struct qstr *); |
39a53e0c JK |
1367 | |
1368 | /* | |
1369 | * node.c | |
1370 | */ | |
1371 | struct dnode_of_data; | |
1372 | struct node_info; | |
1373 | ||
6fb03f3a | 1374 | bool available_free_memory(struct f2fs_sb_info *, int); |
88bd02c9 JK |
1375 | bool is_checkpointed_node(struct f2fs_sb_info *, nid_t); |
1376 | bool has_fsynced_inode(struct f2fs_sb_info *, nid_t); | |
1377 | bool need_inode_block_update(struct f2fs_sb_info *, nid_t); | |
39a53e0c JK |
1378 | void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *); |
1379 | int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int); | |
1380 | int truncate_inode_blocks(struct inode *, pgoff_t); | |
4f16fb0f | 1381 | int truncate_xattr_node(struct inode *, struct page *); |
cfe58f9d | 1382 | int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t); |
58e674d6 | 1383 | void remove_inode_page(struct inode *); |
a014e037 | 1384 | struct page *new_inode_page(struct inode *); |
8ae8f162 | 1385 | struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *); |
39a53e0c JK |
1386 | void ra_node_page(struct f2fs_sb_info *, nid_t); |
1387 | struct page *get_node_page(struct f2fs_sb_info *, pgoff_t); | |
1388 | struct page *get_node_page_ra(struct page *, int); | |
1389 | void sync_inode_page(struct dnode_of_data *); | |
1390 | int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *); | |
1391 | bool alloc_nid(struct f2fs_sb_info *, nid_t *); | |
1392 | void alloc_nid_done(struct f2fs_sb_info *, nid_t); | |
1393 | void alloc_nid_failed(struct f2fs_sb_info *, nid_t); | |
70cfed88 | 1394 | void recover_inline_xattr(struct inode *, struct page *); |
1c35a90e | 1395 | void recover_xattr_data(struct inode *, struct page *, block_t); |
39a53e0c JK |
1396 | int recover_inode_page(struct f2fs_sb_info *, struct page *); |
1397 | int restore_node_summary(struct f2fs_sb_info *, unsigned int, | |
1398 | struct f2fs_summary_block *); | |
1399 | void flush_nat_entries(struct f2fs_sb_info *); | |
1400 | int build_node_manager(struct f2fs_sb_info *); | |
1401 | void destroy_node_manager(struct f2fs_sb_info *); | |
6e6093a8 | 1402 | int __init create_node_manager_caches(void); |
39a53e0c JK |
1403 | void destroy_node_manager_caches(void); |
1404 | ||
1405 | /* | |
1406 | * segment.c | |
1407 | */ | |
88b88a66 JK |
1408 | void register_inmem_page(struct inode *, struct page *); |
1409 | void commit_inmem_pages(struct inode *, bool); | |
39a53e0c | 1410 | void f2fs_balance_fs(struct f2fs_sb_info *); |
4660f9c0 | 1411 | void f2fs_balance_fs_bg(struct f2fs_sb_info *); |
6b4afdd7 | 1412 | int f2fs_issue_flush(struct f2fs_sb_info *); |
2163d198 GZ |
1413 | int create_flush_cmd_control(struct f2fs_sb_info *); |
1414 | void destroy_flush_cmd_control(struct f2fs_sb_info *); | |
39a53e0c | 1415 | void invalidate_blocks(struct f2fs_sb_info *, block_t); |
5e443818 | 1416 | void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t); |
39a53e0c | 1417 | void clear_prefree_segments(struct f2fs_sb_info *); |
4b2fecc8 | 1418 | void release_discard_addrs(struct f2fs_sb_info *); |
cf2271e7 | 1419 | void discard_next_dnode(struct f2fs_sb_info *, block_t); |
3fa06d7b | 1420 | int npages_for_summary_flush(struct f2fs_sb_info *, bool); |
39a53e0c | 1421 | void allocate_new_segments(struct f2fs_sb_info *); |
4b2fecc8 | 1422 | int f2fs_trim_fs(struct f2fs_sb_info *, struct fstrim_range *); |
39a53e0c | 1423 | struct page *get_sum_page(struct f2fs_sb_info *, unsigned int); |
577e3495 | 1424 | void write_meta_page(struct f2fs_sb_info *, struct page *); |
fb5566da | 1425 | void write_node_page(struct f2fs_sb_info *, struct page *, |
cf04e8eb JK |
1426 | unsigned int, struct f2fs_io_info *); |
1427 | void write_data_page(struct page *, struct dnode_of_data *, | |
1428 | struct f2fs_io_info *); | |
1429 | void rewrite_data_page(struct page *, struct f2fs_io_info *); | |
39a53e0c JK |
1430 | void recover_data_page(struct f2fs_sb_info *, struct page *, |
1431 | struct f2fs_summary *, block_t, block_t); | |
bfad7c2d JK |
1432 | void allocate_data_block(struct f2fs_sb_info *, struct page *, |
1433 | block_t, block_t *, struct f2fs_summary *, int); | |
5514f0aa | 1434 | void f2fs_wait_on_page_writeback(struct page *, enum page_type); |
39a53e0c JK |
1435 | void write_data_summaries(struct f2fs_sb_info *, block_t); |
1436 | void write_node_summaries(struct f2fs_sb_info *, block_t); | |
1437 | int lookup_journal_in_cursum(struct f2fs_summary_block *, | |
1438 | int, unsigned int, int); | |
4b2fecc8 | 1439 | void flush_sit_entries(struct f2fs_sb_info *, struct cp_control *); |
39a53e0c | 1440 | int build_segment_manager(struct f2fs_sb_info *); |
39a53e0c | 1441 | void destroy_segment_manager(struct f2fs_sb_info *); |
7fd9e544 JK |
1442 | int __init create_segment_manager_caches(void); |
1443 | void destroy_segment_manager_caches(void); | |
39a53e0c JK |
1444 | |
1445 | /* | |
1446 | * checkpoint.c | |
1447 | */ | |
1448 | struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t); | |
1449 | struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t); | |
4c521f49 | 1450 | int ra_meta_pages(struct f2fs_sb_info *, block_t, int, int); |
635aee1f | 1451 | void ra_meta_pages_cond(struct f2fs_sb_info *, pgoff_t); |
39a53e0c | 1452 | long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long); |
fff04f90 JK |
1453 | void add_dirty_inode(struct f2fs_sb_info *, nid_t, int type); |
1454 | void remove_dirty_inode(struct f2fs_sb_info *, nid_t, int type); | |
6f12ac25 | 1455 | void release_dirty_inode(struct f2fs_sb_info *); |
fff04f90 | 1456 | bool exist_written_data(struct f2fs_sb_info *, nid_t, int); |
cbd56e7d JK |
1457 | int acquire_orphan_inode(struct f2fs_sb_info *); |
1458 | void release_orphan_inode(struct f2fs_sb_info *); | |
39a53e0c JK |
1459 | void add_orphan_inode(struct f2fs_sb_info *, nid_t); |
1460 | void remove_orphan_inode(struct f2fs_sb_info *, nid_t); | |
8f99a946 | 1461 | void recover_orphan_inodes(struct f2fs_sb_info *); |
39a53e0c | 1462 | int get_valid_checkpoint(struct f2fs_sb_info *); |
a7ffdbe2 | 1463 | void update_dirty_page(struct inode *, struct page *); |
5deb8267 | 1464 | void add_dirty_dir_inode(struct inode *); |
39a53e0c JK |
1465 | void remove_dirty_dir_inode(struct inode *); |
1466 | void sync_dirty_dir_inodes(struct f2fs_sb_info *); | |
75ab4cb8 | 1467 | void write_checkpoint(struct f2fs_sb_info *, struct cp_control *); |
6451e041 | 1468 | void init_ino_entry_info(struct f2fs_sb_info *); |
6e6093a8 | 1469 | int __init create_checkpoint_caches(void); |
39a53e0c JK |
1470 | void destroy_checkpoint_caches(void); |
1471 | ||
1472 | /* | |
1473 | * data.c | |
1474 | */ | |
458e6197 | 1475 | void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int); |
cf04e8eb JK |
1476 | int f2fs_submit_page_bio(struct f2fs_sb_info *, struct page *, |
1477 | struct f2fs_io_info *); | |
1478 | void f2fs_submit_page_mbio(struct f2fs_sb_info *, struct page *, | |
458e6197 | 1479 | struct f2fs_io_info *); |
39a53e0c | 1480 | int reserve_new_block(struct dnode_of_data *); |
b600965c | 1481 | int f2fs_reserve_block(struct dnode_of_data *, pgoff_t); |
e1509cf2 | 1482 | void update_extent_cache(struct dnode_of_data *); |
c718379b | 1483 | struct page *find_data_page(struct inode *, pgoff_t, bool); |
39a53e0c | 1484 | struct page *get_lock_data_page(struct inode *, pgoff_t); |
64aa7ed9 | 1485 | struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool); |
458e6197 | 1486 | int do_write_data_page(struct page *, struct f2fs_io_info *); |
9ab70134 | 1487 | int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64); |
39a53e0c JK |
1488 | |
1489 | /* | |
1490 | * gc.c | |
1491 | */ | |
1492 | int start_gc_thread(struct f2fs_sb_info *); | |
1493 | void stop_gc_thread(struct f2fs_sb_info *); | |
de93653f | 1494 | block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *); |
408e9375 | 1495 | int f2fs_gc(struct f2fs_sb_info *); |
39a53e0c | 1496 | void build_gc_manager(struct f2fs_sb_info *); |
39a53e0c JK |
1497 | |
1498 | /* | |
1499 | * recovery.c | |
1500 | */ | |
6ead1142 | 1501 | int recover_fsync_data(struct f2fs_sb_info *); |
39a53e0c JK |
1502 | bool space_for_roll_forward(struct f2fs_sb_info *); |
1503 | ||
1504 | /* | |
1505 | * debug.c | |
1506 | */ | |
1507 | #ifdef CONFIG_F2FS_STAT_FS | |
1508 | struct f2fs_stat_info { | |
1509 | struct list_head stat_list; | |
1510 | struct f2fs_sb_info *sbi; | |
39a53e0c JK |
1511 | int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs; |
1512 | int main_area_segs, main_area_sections, main_area_zones; | |
1513 | int hit_ext, total_ext; | |
1514 | int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta; | |
dd4e4b59 | 1515 | int nats, dirty_nats, sits, dirty_sits, fnids; |
39a53e0c | 1516 | int total_count, utilization; |
8dcf2ff7 | 1517 | int bg_gc, inline_inode, inline_dir, inmem_pages; |
39a53e0c JK |
1518 | unsigned int valid_count, valid_node_count, valid_inode_count; |
1519 | unsigned int bimodal, avg_vblocks; | |
1520 | int util_free, util_valid, util_invalid; | |
1521 | int rsvd_segs, overp_segs; | |
1522 | int dirty_count, node_pages, meta_pages; | |
942e0be6 | 1523 | int prefree_count, call_count, cp_count; |
39a53e0c JK |
1524 | int tot_segs, node_segs, data_segs, free_segs, free_secs; |
1525 | int tot_blks, data_blks, node_blks; | |
1526 | int curseg[NR_CURSEG_TYPE]; | |
1527 | int cursec[NR_CURSEG_TYPE]; | |
1528 | int curzone[NR_CURSEG_TYPE]; | |
1529 | ||
1530 | unsigned int segment_count[2]; | |
1531 | unsigned int block_count[2]; | |
b9a2c252 | 1532 | unsigned int inplace_count; |
39a53e0c JK |
1533 | unsigned base_mem, cache_mem; |
1534 | }; | |
1535 | ||
963d4f7d GZ |
1536 | static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi) |
1537 | { | |
6c311ec6 | 1538 | return (struct f2fs_stat_info *)sbi->stat_info; |
963d4f7d GZ |
1539 | } |
1540 | ||
942e0be6 | 1541 | #define stat_inc_cp_count(si) ((si)->cp_count++) |
dcdfff65 JK |
1542 | #define stat_inc_call_count(si) ((si)->call_count++) |
1543 | #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++) | |
1544 | #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++) | |
1545 | #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--) | |
1546 | #define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++) | |
1547 | #define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++) | |
0dbdc2ae JK |
1548 | #define stat_inc_inline_inode(inode) \ |
1549 | do { \ | |
1550 | if (f2fs_has_inline_data(inode)) \ | |
03e14d52 | 1551 | (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \ |
0dbdc2ae JK |
1552 | } while (0) |
1553 | #define stat_dec_inline_inode(inode) \ | |
1554 | do { \ | |
1555 | if (f2fs_has_inline_data(inode)) \ | |
03e14d52 | 1556 | (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \ |
0dbdc2ae | 1557 | } while (0) |
3289c061 JK |
1558 | #define stat_inc_inline_dir(inode) \ |
1559 | do { \ | |
1560 | if (f2fs_has_inline_dentry(inode)) \ | |
03e14d52 | 1561 | (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \ |
3289c061 JK |
1562 | } while (0) |
1563 | #define stat_dec_inline_dir(inode) \ | |
1564 | do { \ | |
1565 | if (f2fs_has_inline_dentry(inode)) \ | |
03e14d52 | 1566 | (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \ |
3289c061 | 1567 | } while (0) |
dcdfff65 JK |
1568 | #define stat_inc_seg_type(sbi, curseg) \ |
1569 | ((sbi)->segment_count[(curseg)->alloc_type]++) | |
1570 | #define stat_inc_block_count(sbi, curseg) \ | |
1571 | ((sbi)->block_count[(curseg)->alloc_type]++) | |
b9a2c252 CL |
1572 | #define stat_inc_inplace_blocks(sbi) \ |
1573 | (atomic_inc(&(sbi)->inplace_count)) | |
39a53e0c JK |
1574 | #define stat_inc_seg_count(sbi, type) \ |
1575 | do { \ | |
963d4f7d | 1576 | struct f2fs_stat_info *si = F2FS_STAT(sbi); \ |
39a53e0c JK |
1577 | (si)->tot_segs++; \ |
1578 | if (type == SUM_TYPE_DATA) \ | |
1579 | si->data_segs++; \ | |
1580 | else \ | |
1581 | si->node_segs++; \ | |
1582 | } while (0) | |
1583 | ||
1584 | #define stat_inc_tot_blk_count(si, blks) \ | |
1585 | (si->tot_blks += (blks)) | |
1586 | ||
1587 | #define stat_inc_data_blk_count(sbi, blks) \ | |
1588 | do { \ | |
963d4f7d | 1589 | struct f2fs_stat_info *si = F2FS_STAT(sbi); \ |
39a53e0c JK |
1590 | stat_inc_tot_blk_count(si, blks); \ |
1591 | si->data_blks += (blks); \ | |
1592 | } while (0) | |
1593 | ||
1594 | #define stat_inc_node_blk_count(sbi, blks) \ | |
1595 | do { \ | |
963d4f7d | 1596 | struct f2fs_stat_info *si = F2FS_STAT(sbi); \ |
39a53e0c JK |
1597 | stat_inc_tot_blk_count(si, blks); \ |
1598 | si->node_blks += (blks); \ | |
1599 | } while (0) | |
1600 | ||
1601 | int f2fs_build_stats(struct f2fs_sb_info *); | |
1602 | void f2fs_destroy_stats(struct f2fs_sb_info *); | |
6e6093a8 | 1603 | void __init f2fs_create_root_stats(void); |
4589d25d | 1604 | void f2fs_destroy_root_stats(void); |
39a53e0c | 1605 | #else |
942e0be6 | 1606 | #define stat_inc_cp_count(si) |
39a53e0c | 1607 | #define stat_inc_call_count(si) |
dcdfff65 JK |
1608 | #define stat_inc_bggc_count(si) |
1609 | #define stat_inc_dirty_dir(sbi) | |
1610 | #define stat_dec_dirty_dir(sbi) | |
1611 | #define stat_inc_total_hit(sb) | |
1612 | #define stat_inc_read_hit(sb) | |
0dbdc2ae JK |
1613 | #define stat_inc_inline_inode(inode) |
1614 | #define stat_dec_inline_inode(inode) | |
3289c061 JK |
1615 | #define stat_inc_inline_dir(inode) |
1616 | #define stat_dec_inline_dir(inode) | |
dcdfff65 JK |
1617 | #define stat_inc_seg_type(sbi, curseg) |
1618 | #define stat_inc_block_count(sbi, curseg) | |
b9a2c252 | 1619 | #define stat_inc_inplace_blocks(sbi) |
39a53e0c JK |
1620 | #define stat_inc_seg_count(si, type) |
1621 | #define stat_inc_tot_blk_count(si, blks) | |
1622 | #define stat_inc_data_blk_count(si, blks) | |
1623 | #define stat_inc_node_blk_count(sbi, blks) | |
1624 | ||
1625 | static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; } | |
1626 | static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { } | |
6e6093a8 | 1627 | static inline void __init f2fs_create_root_stats(void) { } |
4589d25d | 1628 | static inline void f2fs_destroy_root_stats(void) { } |
39a53e0c JK |
1629 | #endif |
1630 | ||
1631 | extern const struct file_operations f2fs_dir_operations; | |
1632 | extern const struct file_operations f2fs_file_operations; | |
1633 | extern const struct inode_operations f2fs_file_inode_operations; | |
1634 | extern const struct address_space_operations f2fs_dblock_aops; | |
1635 | extern const struct address_space_operations f2fs_node_aops; | |
1636 | extern const struct address_space_operations f2fs_meta_aops; | |
1637 | extern const struct inode_operations f2fs_dir_inode_operations; | |
1638 | extern const struct inode_operations f2fs_symlink_inode_operations; | |
1639 | extern const struct inode_operations f2fs_special_inode_operations; | |
1001b347 | 1640 | |
e18c65b2 HL |
1641 | /* |
1642 | * inline.c | |
1643 | */ | |
e18c65b2 | 1644 | bool f2fs_may_inline(struct inode *); |
b3d208f9 | 1645 | void read_inline_data(struct page *, struct page *); |
e18c65b2 | 1646 | int f2fs_read_inline_data(struct inode *, struct page *); |
b3d208f9 JK |
1647 | int f2fs_convert_inline_page(struct dnode_of_data *, struct page *); |
1648 | int f2fs_convert_inline_inode(struct inode *); | |
1649 | int f2fs_write_inline_data(struct inode *, struct page *); | |
1650 | void truncate_inline_data(struct page *, u64); | |
0342fd30 | 1651 | bool recover_inline_data(struct inode *, struct page *); |
201a05be CY |
1652 | struct f2fs_dir_entry *find_in_inline_dir(struct inode *, struct qstr *, |
1653 | struct page **); | |
1654 | struct f2fs_dir_entry *f2fs_parent_inline_dir(struct inode *, struct page **); | |
1655 | int make_empty_inline_dir(struct inode *inode, struct inode *, struct page *); | |
1656 | int f2fs_add_inline_entry(struct inode *, const struct qstr *, struct inode *); | |
1657 | void f2fs_delete_inline_entry(struct f2fs_dir_entry *, struct page *, | |
1658 | struct inode *, struct inode *); | |
1659 | bool f2fs_empty_inline_dir(struct inode *); | |
1660 | int f2fs_read_inline_dir(struct file *, struct dir_context *); | |
39a53e0c | 1661 | #endif |