Commit | Line | Data |
---|---|---|
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 | |
39a53e0c JK |
52 | |
53 | #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option) | |
54 | #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option) | |
55 | #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option) | |
56 | ||
57 | #define ver_after(a, b) (typecheck(unsigned long long, a) && \ | |
58 | typecheck(unsigned long long, b) && \ | |
59 | ((long long)((a) - (b)) > 0)) | |
60 | ||
a9841c4d JK |
61 | typedef u32 block_t; /* |
62 | * should not change u32, since it is the on-disk block | |
63 | * address format, __le32. | |
64 | */ | |
39a53e0c JK |
65 | typedef u32 nid_t; |
66 | ||
67 | struct f2fs_mount_info { | |
68 | unsigned int opt; | |
69 | }; | |
70 | ||
7e586fa0 JK |
71 | #define CRCPOLY_LE 0xedb88320 |
72 | ||
73 | static inline __u32 f2fs_crc32(void *buf, size_t len) | |
39a53e0c | 74 | { |
7e586fa0 JK |
75 | unsigned char *p = (unsigned char *)buf; |
76 | __u32 crc = F2FS_SUPER_MAGIC; | |
77 | int i; | |
78 | ||
79 | while (len--) { | |
80 | crc ^= *p++; | |
81 | for (i = 0; i < 8; i++) | |
82 | crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0); | |
83 | } | |
84 | return crc; | |
39a53e0c JK |
85 | } |
86 | ||
7e586fa0 | 87 | static inline bool f2fs_crc_valid(__u32 blk_crc, void *buf, size_t buf_size) |
39a53e0c | 88 | { |
7e586fa0 | 89 | return f2fs_crc32(buf, buf_size) == blk_crc; |
39a53e0c JK |
90 | } |
91 | ||
92 | /* | |
93 | * For checkpoint manager | |
94 | */ | |
95 | enum { | |
96 | NAT_BITMAP, | |
97 | SIT_BITMAP | |
98 | }; | |
99 | ||
75ab4cb8 JK |
100 | enum { |
101 | CP_UMOUNT, | |
102 | CP_SYNC, | |
4b2fecc8 | 103 | CP_DISCARD, |
75ab4cb8 JK |
104 | }; |
105 | ||
106 | struct cp_control { | |
107 | int reason; | |
4b2fecc8 JK |
108 | __u64 trim_start; |
109 | __u64 trim_end; | |
110 | __u64 trim_minlen; | |
111 | __u64 trimmed; | |
75ab4cb8 JK |
112 | }; |
113 | ||
662befda | 114 | /* |
81c1a0f1 | 115 | * For CP/NAT/SIT/SSA readahead |
662befda CY |
116 | */ |
117 | enum { | |
118 | META_CP, | |
119 | META_NAT, | |
81c1a0f1 | 120 | META_SIT, |
4c521f49 JK |
121 | META_SSA, |
122 | META_POR, | |
662befda CY |
123 | }; |
124 | ||
6451e041 JK |
125 | /* for the list of ino */ |
126 | enum { | |
127 | ORPHAN_INO, /* for orphan ino list */ | |
fff04f90 JK |
128 | APPEND_INO, /* for append ino list */ |
129 | UPDATE_INO, /* for update ino list */ | |
6451e041 JK |
130 | MAX_INO_ENTRY, /* max. list */ |
131 | }; | |
132 | ||
133 | struct ino_entry { | |
39a53e0c JK |
134 | struct list_head list; /* list head */ |
135 | nid_t ino; /* inode number */ | |
136 | }; | |
137 | ||
138 | /* for the list of directory inodes */ | |
139 | struct dir_inode_entry { | |
140 | struct list_head list; /* list head */ | |
141 | struct inode *inode; /* vfs inode pointer */ | |
142 | }; | |
143 | ||
7fd9e544 JK |
144 | /* for the list of blockaddresses to be discarded */ |
145 | struct discard_entry { | |
146 | struct list_head list; /* list head */ | |
147 | block_t blkaddr; /* block address to be discarded */ | |
148 | int len; /* # of consecutive blocks of the discard */ | |
149 | }; | |
150 | ||
39a53e0c JK |
151 | /* for the list of fsync inodes, used only during recovery */ |
152 | struct fsync_inode_entry { | |
153 | struct list_head list; /* list head */ | |
154 | struct inode *inode; /* vfs inode pointer */ | |
c52e1b10 JK |
155 | block_t blkaddr; /* block address locating the last fsync */ |
156 | block_t last_dentry; /* block address locating the last dentry */ | |
157 | block_t last_inode; /* block address locating the last inode */ | |
39a53e0c JK |
158 | }; |
159 | ||
160 | #define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats)) | |
161 | #define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits)) | |
162 | ||
163 | #define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne) | |
164 | #define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid) | |
165 | #define sit_in_journal(sum, i) (sum->sit_j.entries[i].se) | |
166 | #define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno) | |
167 | ||
309cc2b6 JK |
168 | #define MAX_NAT_JENTRIES(sum) (NAT_JOURNAL_ENTRIES - nats_in_cursum(sum)) |
169 | #define MAX_SIT_JENTRIES(sum) (SIT_JOURNAL_ENTRIES - sits_in_cursum(sum)) | |
170 | ||
39a53e0c JK |
171 | static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i) |
172 | { | |
173 | int before = nats_in_cursum(rs); | |
174 | rs->n_nats = cpu_to_le16(before + i); | |
175 | return before; | |
176 | } | |
177 | ||
178 | static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i) | |
179 | { | |
180 | int before = sits_in_cursum(rs); | |
181 | rs->n_sits = cpu_to_le16(before + i); | |
182 | return before; | |
183 | } | |
184 | ||
184a5cd2 CY |
185 | static inline bool __has_cursum_space(struct f2fs_summary_block *sum, int size, |
186 | int type) | |
187 | { | |
188 | if (type == NAT_JOURNAL) | |
309cc2b6 JK |
189 | return size <= MAX_NAT_JENTRIES(sum); |
190 | return size <= MAX_SIT_JENTRIES(sum); | |
184a5cd2 CY |
191 | } |
192 | ||
e9750824 NJ |
193 | /* |
194 | * ioctl commands | |
195 | */ | |
88b88a66 JK |
196 | #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS |
197 | #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS | |
198 | ||
199 | #define F2FS_IOCTL_MAGIC 0xf5 | |
200 | #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1) | |
201 | #define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2) | |
02a1335f | 202 | #define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3) |
e9750824 NJ |
203 | |
204 | #if defined(__KERNEL__) && defined(CONFIG_COMPAT) | |
205 | /* | |
206 | * ioctl commands in 32 bit emulation | |
207 | */ | |
208 | #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS | |
209 | #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS | |
210 | #endif | |
211 | ||
39a53e0c JK |
212 | /* |
213 | * For INODE and NODE manager | |
214 | */ | |
dbe6a5ff JK |
215 | /* |
216 | * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1 | |
217 | * as its node offset to distinguish from index node blocks. | |
218 | * But some bits are used to mark the node block. | |
219 | */ | |
220 | #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \ | |
221 | >> OFFSET_BIT_SHIFT) | |
266e97a8 JK |
222 | enum { |
223 | ALLOC_NODE, /* allocate a new node page if needed */ | |
224 | LOOKUP_NODE, /* look up a node without readahead */ | |
225 | LOOKUP_NODE_RA, /* | |
226 | * look up a node with readahead called | |
4f4124d0 | 227 | * by get_data_block. |
39a53e0c | 228 | */ |
266e97a8 JK |
229 | }; |
230 | ||
39a53e0c JK |
231 | #define F2FS_LINK_MAX 32000 /* maximum link count per file */ |
232 | ||
817202d9 CY |
233 | #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */ |
234 | ||
39a53e0c | 235 | /* for in-memory extent cache entry */ |
c11abd1a JK |
236 | #define F2FS_MIN_EXTENT_LEN 16 /* minimum extent length */ |
237 | ||
39a53e0c JK |
238 | struct extent_info { |
239 | rwlock_t ext_lock; /* rwlock for consistency */ | |
240 | unsigned int fofs; /* start offset in a file */ | |
241 | u32 blk_addr; /* start block address of the extent */ | |
111d2495 | 242 | unsigned int len; /* length of the extent */ |
39a53e0c JK |
243 | }; |
244 | ||
245 | /* | |
246 | * i_advise uses FADVISE_XXX_BIT. We can add additional hints later. | |
247 | */ | |
248 | #define FADVISE_COLD_BIT 0x01 | |
354a3399 | 249 | #define FADVISE_LOST_PINO_BIT 0x02 |
39a53e0c | 250 | |
ab9fa662 JK |
251 | #define DEF_DIR_LEVEL 0 |
252 | ||
39a53e0c JK |
253 | struct f2fs_inode_info { |
254 | struct inode vfs_inode; /* serve a vfs inode */ | |
255 | unsigned long i_flags; /* keep an inode flags for ioctl */ | |
256 | unsigned char i_advise; /* use to give file attribute hints */ | |
38431545 | 257 | unsigned char i_dir_level; /* use for dentry level for large dir */ |
39a53e0c | 258 | unsigned int i_current_depth; /* use only in directory structure */ |
6666e6aa | 259 | unsigned int i_pino; /* parent inode number */ |
39a53e0c JK |
260 | umode_t i_acl_mode; /* keep file acl mode temporarily */ |
261 | ||
262 | /* Use below internally in f2fs*/ | |
263 | unsigned long flags; /* use to pass per-file flags */ | |
d928bfbf | 264 | struct rw_semaphore i_sem; /* protect fi info */ |
a7ffdbe2 | 265 | atomic_t dirty_pages; /* # of dirty pages */ |
39a53e0c JK |
266 | f2fs_hash_t chash; /* hash value of given file name */ |
267 | unsigned int clevel; /* maximum level of given file name */ | |
268 | nid_t i_xattr_nid; /* node id that contains xattrs */ | |
e518ff81 | 269 | unsigned long long xattr_ver; /* cp version of xattr modification */ |
39a53e0c | 270 | struct extent_info ext; /* in-memory extent cache entry */ |
ed57c27f | 271 | struct dir_inode_entry *dirty_dir; /* the pointer of dirty dir */ |
88b88a66 | 272 | |
34ba94ba | 273 | struct radix_tree_root inmem_root; /* radix tree for inmem pages */ |
88b88a66 JK |
274 | struct list_head inmem_pages; /* inmemory pages managed by f2fs */ |
275 | struct mutex inmem_lock; /* lock for inmemory pages */ | |
39a53e0c JK |
276 | }; |
277 | ||
278 | static inline void get_extent_info(struct extent_info *ext, | |
279 | struct f2fs_extent i_ext) | |
280 | { | |
281 | write_lock(&ext->ext_lock); | |
282 | ext->fofs = le32_to_cpu(i_ext.fofs); | |
283 | ext->blk_addr = le32_to_cpu(i_ext.blk_addr); | |
284 | ext->len = le32_to_cpu(i_ext.len); | |
285 | write_unlock(&ext->ext_lock); | |
286 | } | |
287 | ||
288 | static inline void set_raw_extent(struct extent_info *ext, | |
289 | struct f2fs_extent *i_ext) | |
290 | { | |
291 | read_lock(&ext->ext_lock); | |
292 | i_ext->fofs = cpu_to_le32(ext->fofs); | |
293 | i_ext->blk_addr = cpu_to_le32(ext->blk_addr); | |
294 | i_ext->len = cpu_to_le32(ext->len); | |
295 | read_unlock(&ext->ext_lock); | |
296 | } | |
297 | ||
298 | struct f2fs_nm_info { | |
299 | block_t nat_blkaddr; /* base disk address of NAT */ | |
300 | nid_t max_nid; /* maximum possible node ids */ | |
7ee0eeab | 301 | nid_t available_nids; /* maximum available node ids */ |
39a53e0c | 302 | nid_t next_scan_nid; /* the next nid to be scanned */ |
cdfc41c1 | 303 | unsigned int ram_thresh; /* control the memory footprint */ |
39a53e0c JK |
304 | |
305 | /* NAT cache management */ | |
306 | struct radix_tree_root nat_root;/* root of the nat entry cache */ | |
309cc2b6 | 307 | struct radix_tree_root nat_set_root;/* root of the nat set cache */ |
39a53e0c | 308 | rwlock_t nat_tree_lock; /* protect nat_tree_lock */ |
39a53e0c | 309 | struct list_head nat_entries; /* cached nat entry list (clean) */ |
309cc2b6 | 310 | unsigned int nat_cnt; /* the # of cached nat entries */ |
aec71382 | 311 | unsigned int dirty_nat_cnt; /* total num of nat entries in set */ |
39a53e0c JK |
312 | |
313 | /* free node ids management */ | |
8a7ed66a | 314 | struct radix_tree_root free_nid_root;/* root of the free_nid cache */ |
39a53e0c JK |
315 | struct list_head free_nid_list; /* a list for free nids */ |
316 | spinlock_t free_nid_list_lock; /* protect free nid list */ | |
317 | unsigned int fcnt; /* the number of free node id */ | |
318 | struct mutex build_lock; /* lock for build free nids */ | |
319 | ||
320 | /* for checkpoint */ | |
321 | char *nat_bitmap; /* NAT bitmap pointer */ | |
322 | int bitmap_size; /* bitmap size */ | |
323 | }; | |
324 | ||
325 | /* | |
326 | * this structure is used as one of function parameters. | |
327 | * all the information are dedicated to a given direct node block determined | |
328 | * by the data offset in a file. | |
329 | */ | |
330 | struct dnode_of_data { | |
331 | struct inode *inode; /* vfs inode pointer */ | |
332 | struct page *inode_page; /* its inode page, NULL is possible */ | |
333 | struct page *node_page; /* cached direct node page */ | |
334 | nid_t nid; /* node id of the direct node block */ | |
335 | unsigned int ofs_in_node; /* data offset in the node page */ | |
336 | bool inode_page_locked; /* inode page is locked or not */ | |
337 | block_t data_blkaddr; /* block address of the node block */ | |
338 | }; | |
339 | ||
340 | static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode, | |
341 | struct page *ipage, struct page *npage, nid_t nid) | |
342 | { | |
d66d1f76 | 343 | memset(dn, 0, sizeof(*dn)); |
39a53e0c JK |
344 | dn->inode = inode; |
345 | dn->inode_page = ipage; | |
346 | dn->node_page = npage; | |
347 | dn->nid = nid; | |
39a53e0c JK |
348 | } |
349 | ||
350 | /* | |
351 | * For SIT manager | |
352 | * | |
353 | * By default, there are 6 active log areas across the whole main area. | |
354 | * When considering hot and cold data separation to reduce cleaning overhead, | |
355 | * we split 3 for data logs and 3 for node logs as hot, warm, and cold types, | |
356 | * respectively. | |
357 | * In the current design, you should not change the numbers intentionally. | |
358 | * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6 | |
359 | * logs individually according to the underlying devices. (default: 6) | |
360 | * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for | |
361 | * data and 8 for node logs. | |
362 | */ | |
363 | #define NR_CURSEG_DATA_TYPE (3) | |
364 | #define NR_CURSEG_NODE_TYPE (3) | |
365 | #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE) | |
366 | ||
367 | enum { | |
368 | CURSEG_HOT_DATA = 0, /* directory entry blocks */ | |
369 | CURSEG_WARM_DATA, /* data blocks */ | |
370 | CURSEG_COLD_DATA, /* multimedia or GCed data blocks */ | |
371 | CURSEG_HOT_NODE, /* direct node blocks of directory files */ | |
372 | CURSEG_WARM_NODE, /* direct node blocks of normal files */ | |
373 | CURSEG_COLD_NODE, /* indirect node blocks */ | |
374 | NO_CHECK_TYPE | |
375 | }; | |
376 | ||
6b4afdd7 | 377 | struct flush_cmd { |
6b4afdd7 | 378 | struct completion wait; |
721bd4d5 | 379 | struct llist_node llnode; |
6b4afdd7 JK |
380 | int ret; |
381 | }; | |
382 | ||
a688b9d9 GZ |
383 | struct flush_cmd_control { |
384 | struct task_struct *f2fs_issue_flush; /* flush thread */ | |
385 | wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */ | |
721bd4d5 GZ |
386 | struct llist_head issue_list; /* list for command issue */ |
387 | struct llist_node *dispatch_list; /* list for command dispatch */ | |
a688b9d9 GZ |
388 | }; |
389 | ||
39a53e0c JK |
390 | struct f2fs_sm_info { |
391 | struct sit_info *sit_info; /* whole segment information */ | |
392 | struct free_segmap_info *free_info; /* free segment information */ | |
393 | struct dirty_seglist_info *dirty_info; /* dirty segment information */ | |
394 | struct curseg_info *curseg_array; /* active segment information */ | |
395 | ||
39a53e0c JK |
396 | block_t seg0_blkaddr; /* block address of 0'th segment */ |
397 | block_t main_blkaddr; /* start block address of main area */ | |
398 | block_t ssa_blkaddr; /* start block address of SSA area */ | |
399 | ||
400 | unsigned int segment_count; /* total # of segments */ | |
401 | unsigned int main_segments; /* # of segments in main area */ | |
402 | unsigned int reserved_segments; /* # of reserved segments */ | |
403 | unsigned int ovp_segments; /* # of overprovision segments */ | |
81eb8d6e JK |
404 | |
405 | /* a threshold to reclaim prefree segments */ | |
406 | unsigned int rec_prefree_segments; | |
7fd9e544 JK |
407 | |
408 | /* for small discard management */ | |
409 | struct list_head discard_list; /* 4KB discard list */ | |
410 | int nr_discards; /* # of discards in the list */ | |
411 | int max_discards; /* max. discards to be issued */ | |
216fbd64 | 412 | |
184a5cd2 CY |
413 | struct list_head sit_entry_set; /* sit entry set list */ |
414 | ||
216fbd64 JK |
415 | unsigned int ipu_policy; /* in-place-update policy */ |
416 | unsigned int min_ipu_util; /* in-place-update threshold */ | |
c1ce1b02 | 417 | unsigned int min_fsync_blocks; /* threshold for fsync */ |
6b4afdd7 JK |
418 | |
419 | /* for flush command control */ | |
a688b9d9 GZ |
420 | struct flush_cmd_control *cmd_control_info; |
421 | ||
39a53e0c JK |
422 | }; |
423 | ||
39a53e0c JK |
424 | /* |
425 | * For superblock | |
426 | */ | |
427 | /* | |
428 | * COUNT_TYPE for monitoring | |
429 | * | |
430 | * f2fs monitors the number of several block types such as on-writeback, | |
431 | * dirty dentry blocks, dirty node blocks, and dirty meta blocks. | |
432 | */ | |
433 | enum count_type { | |
434 | F2FS_WRITEBACK, | |
435 | F2FS_DIRTY_DENTS, | |
436 | F2FS_DIRTY_NODES, | |
437 | F2FS_DIRTY_META, | |
438 | NR_COUNT_TYPE, | |
439 | }; | |
440 | ||
39a53e0c | 441 | /* |
e1c42045 | 442 | * The below are the page types of bios used in submit_bio(). |
39a53e0c JK |
443 | * The available types are: |
444 | * DATA User data pages. It operates as async mode. | |
445 | * NODE Node pages. It operates as async mode. | |
446 | * META FS metadata pages such as SIT, NAT, CP. | |
447 | * NR_PAGE_TYPE The number of page types. | |
448 | * META_FLUSH Make sure the previous pages are written | |
449 | * with waiting the bio's completion | |
450 | * ... Only can be used with META. | |
451 | */ | |
7d5e5109 | 452 | #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type)) |
39a53e0c JK |
453 | enum page_type { |
454 | DATA, | |
455 | NODE, | |
456 | META, | |
457 | NR_PAGE_TYPE, | |
458 | META_FLUSH, | |
459 | }; | |
460 | ||
458e6197 | 461 | struct f2fs_io_info { |
7e8f2308 GZ |
462 | enum page_type type; /* contains DATA/NODE/META/META_FLUSH */ |
463 | int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */ | |
458e6197 JK |
464 | }; |
465 | ||
93dfe2ac | 466 | #define is_read_io(rw) (((rw) & 1) == READ) |
1ff7bd3b | 467 | struct f2fs_bio_info { |
458e6197 | 468 | struct f2fs_sb_info *sbi; /* f2fs superblock */ |
1ff7bd3b JK |
469 | struct bio *bio; /* bios to merge */ |
470 | sector_t last_block_in_bio; /* last block number */ | |
458e6197 | 471 | struct f2fs_io_info fio; /* store buffered io info. */ |
df0f8dc0 | 472 | struct rw_semaphore io_rwsem; /* blocking op for bio */ |
1ff7bd3b JK |
473 | }; |
474 | ||
39a53e0c JK |
475 | struct f2fs_sb_info { |
476 | struct super_block *sb; /* pointer to VFS super block */ | |
5e176d54 | 477 | struct proc_dir_entry *s_proc; /* proc entry */ |
39a53e0c JK |
478 | struct buffer_head *raw_super_buf; /* buffer head of raw sb */ |
479 | struct f2fs_super_block *raw_super; /* raw super block pointer */ | |
480 | int s_dirty; /* dirty flag for checkpoint */ | |
2ae4c673 | 481 | bool need_fsck; /* need fsck.f2fs to fix */ |
39a53e0c JK |
482 | |
483 | /* for node-related operations */ | |
484 | struct f2fs_nm_info *nm_info; /* node manager */ | |
485 | struct inode *node_inode; /* cache node blocks */ | |
486 | ||
487 | /* for segment-related operations */ | |
488 | struct f2fs_sm_info *sm_info; /* segment manager */ | |
1ff7bd3b JK |
489 | |
490 | /* for bio operations */ | |
924b720b | 491 | struct f2fs_bio_info read_io; /* for read bios */ |
1ff7bd3b | 492 | struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */ |
1b1f559f | 493 | struct completion *wait_io; /* for completion bios */ |
39a53e0c JK |
494 | |
495 | /* for checkpoint */ | |
496 | struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */ | |
497 | struct inode *meta_inode; /* cache meta blocks */ | |
39936837 | 498 | struct mutex cp_mutex; /* checkpoint procedure lock */ |
e479556b | 499 | struct rw_semaphore cp_rwsem; /* blocking FS operations */ |
b3582c68 | 500 | struct rw_semaphore node_write; /* locking node writes */ |
39a53e0c | 501 | struct mutex writepages; /* mutex for writepages() */ |
aabe5136 | 502 | bool por_doing; /* recovery is doing or not */ |
fb51b5ef | 503 | wait_queue_head_t cp_wait; |
39a53e0c | 504 | |
6451e041 | 505 | /* for inode management */ |
39efac41 | 506 | struct radix_tree_root ino_root[MAX_INO_ENTRY]; /* ino entry array */ |
6451e041 JK |
507 | spinlock_t ino_lock[MAX_INO_ENTRY]; /* for ino entry lock */ |
508 | struct list_head ino_list[MAX_INO_ENTRY]; /* inode list head */ | |
509 | ||
510 | /* for orphan inode, use 0'th array */ | |
39a53e0c | 511 | unsigned int n_orphans; /* # of orphan inodes */ |
0d47c1ad | 512 | unsigned int max_orphans; /* max orphan inodes */ |
39a53e0c JK |
513 | |
514 | /* for directory inode management */ | |
515 | struct list_head dir_inode_list; /* dir inode list */ | |
516 | spinlock_t dir_inode_lock; /* for dir inode list lock */ | |
39a53e0c | 517 | |
e1c42045 | 518 | /* basic filesystem units */ |
39a53e0c JK |
519 | unsigned int log_sectors_per_block; /* log2 sectors per block */ |
520 | unsigned int log_blocksize; /* log2 block size */ | |
521 | unsigned int blocksize; /* block size */ | |
522 | unsigned int root_ino_num; /* root inode number*/ | |
523 | unsigned int node_ino_num; /* node inode number*/ | |
524 | unsigned int meta_ino_num; /* meta inode number*/ | |
525 | unsigned int log_blocks_per_seg; /* log2 blocks per segment */ | |
526 | unsigned int blocks_per_seg; /* blocks per segment */ | |
527 | unsigned int segs_per_sec; /* segments per section */ | |
528 | unsigned int secs_per_zone; /* sections per zone */ | |
529 | unsigned int total_sections; /* total section count */ | |
530 | unsigned int total_node_count; /* total node block count */ | |
531 | unsigned int total_valid_node_count; /* valid node block count */ | |
532 | unsigned int total_valid_inode_count; /* valid inode count */ | |
533 | int active_logs; /* # of active logs */ | |
ab9fa662 | 534 | int dir_level; /* directory level */ |
39a53e0c JK |
535 | |
536 | block_t user_block_count; /* # of user blocks */ | |
537 | block_t total_valid_block_count; /* # of valid blocks */ | |
538 | block_t alloc_valid_block_count; /* # of allocated blocks */ | |
539 | block_t last_valid_block_count; /* for recovery */ | |
540 | u32 s_next_generation; /* for NFS support */ | |
541 | atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */ | |
542 | ||
543 | struct f2fs_mount_info mount_opt; /* mount options */ | |
544 | ||
545 | /* for cleaning operations */ | |
546 | struct mutex gc_mutex; /* mutex for GC */ | |
547 | struct f2fs_gc_kthread *gc_thread; /* GC thread */ | |
5ec4e49f | 548 | unsigned int cur_victim_sec; /* current victim section num */ |
39a53e0c | 549 | |
b1c57c1c JK |
550 | /* maximum # of trials to find a victim segment for SSR and GC */ |
551 | unsigned int max_victim_search; | |
552 | ||
39a53e0c JK |
553 | /* |
554 | * for stat information. | |
555 | * one is for the LFS mode, and the other is for the SSR mode. | |
556 | */ | |
35b09d82 | 557 | #ifdef CONFIG_F2FS_STAT_FS |
39a53e0c JK |
558 | struct f2fs_stat_info *stat_info; /* FS status information */ |
559 | unsigned int segment_count[2]; /* # of allocated segments */ | |
560 | unsigned int block_count[2]; /* # of allocated blocks */ | |
39a53e0c | 561 | int total_hit_ext, read_hit_ext; /* extent cache hit ratio */ |
0dbdc2ae | 562 | int inline_inode; /* # of inline_data inodes */ |
39a53e0c | 563 | int bg_gc; /* background gc calls */ |
35b09d82 NJ |
564 | unsigned int n_dirty_dirs; /* # of dir inodes */ |
565 | #endif | |
566 | unsigned int last_victim[2]; /* last victim segment # */ | |
39a53e0c | 567 | spinlock_t stat_lock; /* lock for stat operations */ |
b59d0bae NJ |
568 | |
569 | /* For sysfs suppport */ | |
570 | struct kobject s_kobj; | |
571 | struct completion s_kobj_unregister; | |
39a53e0c JK |
572 | }; |
573 | ||
574 | /* | |
575 | * Inline functions | |
576 | */ | |
577 | static inline struct f2fs_inode_info *F2FS_I(struct inode *inode) | |
578 | { | |
579 | return container_of(inode, struct f2fs_inode_info, vfs_inode); | |
580 | } | |
581 | ||
582 | static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb) | |
583 | { | |
584 | return sb->s_fs_info; | |
585 | } | |
586 | ||
4081363f JK |
587 | static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode) |
588 | { | |
589 | return F2FS_SB(inode->i_sb); | |
590 | } | |
591 | ||
592 | static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping) | |
593 | { | |
594 | return F2FS_I_SB(mapping->host); | |
595 | } | |
596 | ||
597 | static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page) | |
598 | { | |
599 | return F2FS_M_SB(page->mapping); | |
600 | } | |
601 | ||
39a53e0c JK |
602 | static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi) |
603 | { | |
604 | return (struct f2fs_super_block *)(sbi->raw_super); | |
605 | } | |
606 | ||
607 | static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi) | |
608 | { | |
609 | return (struct f2fs_checkpoint *)(sbi->ckpt); | |
610 | } | |
611 | ||
45590710 GZ |
612 | static inline struct f2fs_node *F2FS_NODE(struct page *page) |
613 | { | |
614 | return (struct f2fs_node *)page_address(page); | |
615 | } | |
616 | ||
58bfaf44 JK |
617 | static inline struct f2fs_inode *F2FS_INODE(struct page *page) |
618 | { | |
619 | return &((struct f2fs_node *)page_address(page))->i; | |
620 | } | |
621 | ||
39a53e0c JK |
622 | static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi) |
623 | { | |
624 | return (struct f2fs_nm_info *)(sbi->nm_info); | |
625 | } | |
626 | ||
627 | static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi) | |
628 | { | |
629 | return (struct f2fs_sm_info *)(sbi->sm_info); | |
630 | } | |
631 | ||
632 | static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi) | |
633 | { | |
634 | return (struct sit_info *)(SM_I(sbi)->sit_info); | |
635 | } | |
636 | ||
637 | static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi) | |
638 | { | |
639 | return (struct free_segmap_info *)(SM_I(sbi)->free_info); | |
640 | } | |
641 | ||
642 | static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi) | |
643 | { | |
644 | return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info); | |
645 | } | |
646 | ||
9df27d98 GZ |
647 | static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi) |
648 | { | |
649 | return sbi->meta_inode->i_mapping; | |
650 | } | |
651 | ||
4ef51a8f JK |
652 | static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi) |
653 | { | |
654 | return sbi->node_inode->i_mapping; | |
655 | } | |
656 | ||
39a53e0c JK |
657 | static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info *sbi) |
658 | { | |
659 | sbi->s_dirty = 1; | |
660 | } | |
661 | ||
662 | static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info *sbi) | |
663 | { | |
664 | sbi->s_dirty = 0; | |
665 | } | |
666 | ||
d71b5564 JK |
667 | static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp) |
668 | { | |
669 | return le64_to_cpu(cp->checkpoint_ver); | |
670 | } | |
671 | ||
25ca923b JK |
672 | static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) |
673 | { | |
674 | unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); | |
675 | return ckpt_flags & f; | |
676 | } | |
677 | ||
678 | static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) | |
679 | { | |
680 | unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); | |
681 | ckpt_flags |= f; | |
682 | cp->ckpt_flags = cpu_to_le32(ckpt_flags); | |
683 | } | |
684 | ||
685 | static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) | |
686 | { | |
687 | unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); | |
688 | ckpt_flags &= (~f); | |
689 | cp->ckpt_flags = cpu_to_le32(ckpt_flags); | |
690 | } | |
691 | ||
e479556b | 692 | static inline void f2fs_lock_op(struct f2fs_sb_info *sbi) |
39936837 | 693 | { |
e479556b | 694 | down_read(&sbi->cp_rwsem); |
39936837 JK |
695 | } |
696 | ||
e479556b | 697 | static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi) |
39a53e0c | 698 | { |
e479556b | 699 | up_read(&sbi->cp_rwsem); |
39a53e0c JK |
700 | } |
701 | ||
e479556b | 702 | static inline void f2fs_lock_all(struct f2fs_sb_info *sbi) |
39a53e0c | 703 | { |
0daaad97 | 704 | f2fs_down_write(&sbi->cp_rwsem, &sbi->cp_mutex); |
39936837 JK |
705 | } |
706 | ||
e479556b | 707 | static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi) |
39936837 | 708 | { |
e479556b | 709 | up_write(&sbi->cp_rwsem); |
39a53e0c JK |
710 | } |
711 | ||
712 | /* | |
713 | * Check whether the given nid is within node id range. | |
714 | */ | |
064e0823 | 715 | static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid) |
39a53e0c | 716 | { |
d6b7d4b3 CY |
717 | if (unlikely(nid < F2FS_ROOT_INO(sbi))) |
718 | return -EINVAL; | |
cfb271d4 | 719 | if (unlikely(nid >= NM_I(sbi)->max_nid)) |
064e0823 NJ |
720 | return -EINVAL; |
721 | return 0; | |
39a53e0c JK |
722 | } |
723 | ||
724 | #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1 | |
725 | ||
726 | /* | |
727 | * Check whether the inode has blocks or not | |
728 | */ | |
729 | static inline int F2FS_HAS_BLOCKS(struct inode *inode) | |
730 | { | |
731 | if (F2FS_I(inode)->i_xattr_nid) | |
6c311ec6 | 732 | return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1; |
39a53e0c | 733 | else |
6c311ec6 | 734 | return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS; |
39a53e0c JK |
735 | } |
736 | ||
4bc8e9bc CY |
737 | static inline bool f2fs_has_xattr_block(unsigned int ofs) |
738 | { | |
739 | return ofs == XATTR_NODE_OFFSET; | |
740 | } | |
741 | ||
39a53e0c JK |
742 | static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi, |
743 | struct inode *inode, blkcnt_t count) | |
744 | { | |
745 | block_t valid_block_count; | |
746 | ||
747 | spin_lock(&sbi->stat_lock); | |
748 | valid_block_count = | |
749 | sbi->total_valid_block_count + (block_t)count; | |
cfb271d4 | 750 | if (unlikely(valid_block_count > sbi->user_block_count)) { |
39a53e0c JK |
751 | spin_unlock(&sbi->stat_lock); |
752 | return false; | |
753 | } | |
754 | inode->i_blocks += count; | |
755 | sbi->total_valid_block_count = valid_block_count; | |
756 | sbi->alloc_valid_block_count += (block_t)count; | |
757 | spin_unlock(&sbi->stat_lock); | |
758 | return true; | |
759 | } | |
760 | ||
da19b0dc | 761 | static inline void dec_valid_block_count(struct f2fs_sb_info *sbi, |
39a53e0c JK |
762 | struct inode *inode, |
763 | blkcnt_t count) | |
764 | { | |
765 | spin_lock(&sbi->stat_lock); | |
9850cf4a JK |
766 | f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count); |
767 | f2fs_bug_on(sbi, inode->i_blocks < count); | |
39a53e0c JK |
768 | inode->i_blocks -= count; |
769 | sbi->total_valid_block_count -= (block_t)count; | |
770 | spin_unlock(&sbi->stat_lock); | |
39a53e0c JK |
771 | } |
772 | ||
773 | static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type) | |
774 | { | |
775 | atomic_inc(&sbi->nr_pages[count_type]); | |
776 | F2FS_SET_SB_DIRT(sbi); | |
777 | } | |
778 | ||
a7ffdbe2 | 779 | static inline void inode_inc_dirty_pages(struct inode *inode) |
39a53e0c | 780 | { |
a7ffdbe2 JK |
781 | atomic_inc(&F2FS_I(inode)->dirty_pages); |
782 | if (S_ISDIR(inode->i_mode)) | |
783 | inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS); | |
39a53e0c JK |
784 | } |
785 | ||
786 | static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type) | |
787 | { | |
788 | atomic_dec(&sbi->nr_pages[count_type]); | |
789 | } | |
790 | ||
a7ffdbe2 | 791 | static inline void inode_dec_dirty_pages(struct inode *inode) |
39a53e0c | 792 | { |
a7ffdbe2 | 793 | if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode)) |
1fe54f9d JK |
794 | return; |
795 | ||
a7ffdbe2 JK |
796 | atomic_dec(&F2FS_I(inode)->dirty_pages); |
797 | ||
798 | if (S_ISDIR(inode->i_mode)) | |
799 | dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS); | |
39a53e0c JK |
800 | } |
801 | ||
802 | static inline int get_pages(struct f2fs_sb_info *sbi, int count_type) | |
803 | { | |
804 | return atomic_read(&sbi->nr_pages[count_type]); | |
805 | } | |
806 | ||
a7ffdbe2 | 807 | static inline int get_dirty_pages(struct inode *inode) |
f8b2c1f9 | 808 | { |
a7ffdbe2 | 809 | return atomic_read(&F2FS_I(inode)->dirty_pages); |
f8b2c1f9 JK |
810 | } |
811 | ||
5ac206cf NJ |
812 | static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type) |
813 | { | |
814 | unsigned int pages_per_sec = sbi->segs_per_sec * | |
815 | (1 << sbi->log_blocks_per_seg); | |
816 | return ((get_pages(sbi, block_type) + pages_per_sec - 1) | |
817 | >> sbi->log_blocks_per_seg) / sbi->segs_per_sec; | |
818 | } | |
819 | ||
39a53e0c JK |
820 | static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi) |
821 | { | |
8b8343fa | 822 | return sbi->total_valid_block_count; |
39a53e0c JK |
823 | } |
824 | ||
825 | static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag) | |
826 | { | |
827 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
828 | ||
829 | /* return NAT or SIT bitmap */ | |
830 | if (flag == NAT_BITMAP) | |
831 | return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize); | |
832 | else if (flag == SIT_BITMAP) | |
833 | return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize); | |
834 | ||
835 | return 0; | |
836 | } | |
837 | ||
838 | static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag) | |
839 | { | |
840 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
1dbe4152 CL |
841 | int offset; |
842 | ||
843 | if (le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload) > 0) { | |
844 | if (flag == NAT_BITMAP) | |
845 | return &ckpt->sit_nat_version_bitmap; | |
846 | else | |
65b85ccc | 847 | return (unsigned char *)ckpt + F2FS_BLKSIZE; |
1dbe4152 CL |
848 | } else { |
849 | offset = (flag == NAT_BITMAP) ? | |
25ca923b | 850 | le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0; |
1dbe4152 CL |
851 | return &ckpt->sit_nat_version_bitmap + offset; |
852 | } | |
39a53e0c JK |
853 | } |
854 | ||
855 | static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi) | |
856 | { | |
857 | block_t start_addr; | |
858 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
d71b5564 | 859 | unsigned long long ckpt_version = cur_cp_version(ckpt); |
39a53e0c | 860 | |
25ca923b | 861 | start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr); |
39a53e0c JK |
862 | |
863 | /* | |
864 | * odd numbered checkpoint should at cp segment 0 | |
e1c42045 | 865 | * and even segment must be at cp segment 1 |
39a53e0c JK |
866 | */ |
867 | if (!(ckpt_version & 1)) | |
868 | start_addr += sbi->blocks_per_seg; | |
869 | ||
870 | return start_addr; | |
871 | } | |
872 | ||
873 | static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi) | |
874 | { | |
875 | return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum); | |
876 | } | |
877 | ||
878 | static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi, | |
ef86d709 | 879 | struct inode *inode) |
39a53e0c JK |
880 | { |
881 | block_t valid_block_count; | |
882 | unsigned int valid_node_count; | |
883 | ||
884 | spin_lock(&sbi->stat_lock); | |
885 | ||
ef86d709 | 886 | valid_block_count = sbi->total_valid_block_count + 1; |
cfb271d4 | 887 | if (unlikely(valid_block_count > sbi->user_block_count)) { |
39a53e0c JK |
888 | spin_unlock(&sbi->stat_lock); |
889 | return false; | |
890 | } | |
891 | ||
ef86d709 | 892 | valid_node_count = sbi->total_valid_node_count + 1; |
cfb271d4 | 893 | if (unlikely(valid_node_count > sbi->total_node_count)) { |
39a53e0c JK |
894 | spin_unlock(&sbi->stat_lock); |
895 | return false; | |
896 | } | |
897 | ||
898 | if (inode) | |
ef86d709 GZ |
899 | inode->i_blocks++; |
900 | ||
901 | sbi->alloc_valid_block_count++; | |
902 | sbi->total_valid_node_count++; | |
903 | sbi->total_valid_block_count++; | |
39a53e0c JK |
904 | spin_unlock(&sbi->stat_lock); |
905 | ||
906 | return true; | |
907 | } | |
908 | ||
909 | static inline void dec_valid_node_count(struct f2fs_sb_info *sbi, | |
ef86d709 | 910 | struct inode *inode) |
39a53e0c JK |
911 | { |
912 | spin_lock(&sbi->stat_lock); | |
913 | ||
9850cf4a JK |
914 | f2fs_bug_on(sbi, !sbi->total_valid_block_count); |
915 | f2fs_bug_on(sbi, !sbi->total_valid_node_count); | |
916 | f2fs_bug_on(sbi, !inode->i_blocks); | |
39a53e0c | 917 | |
ef86d709 GZ |
918 | inode->i_blocks--; |
919 | sbi->total_valid_node_count--; | |
920 | sbi->total_valid_block_count--; | |
39a53e0c JK |
921 | |
922 | spin_unlock(&sbi->stat_lock); | |
923 | } | |
924 | ||
925 | static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi) | |
926 | { | |
8b8343fa | 927 | return sbi->total_valid_node_count; |
39a53e0c JK |
928 | } |
929 | ||
930 | static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi) | |
931 | { | |
932 | spin_lock(&sbi->stat_lock); | |
9850cf4a | 933 | f2fs_bug_on(sbi, sbi->total_valid_inode_count == sbi->total_node_count); |
39a53e0c JK |
934 | sbi->total_valid_inode_count++; |
935 | spin_unlock(&sbi->stat_lock); | |
936 | } | |
937 | ||
0e80220a | 938 | static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi) |
39a53e0c JK |
939 | { |
940 | spin_lock(&sbi->stat_lock); | |
9850cf4a | 941 | f2fs_bug_on(sbi, !sbi->total_valid_inode_count); |
39a53e0c JK |
942 | sbi->total_valid_inode_count--; |
943 | spin_unlock(&sbi->stat_lock); | |
39a53e0c JK |
944 | } |
945 | ||
946 | static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi) | |
947 | { | |
8b8343fa | 948 | return sbi->total_valid_inode_count; |
39a53e0c JK |
949 | } |
950 | ||
951 | static inline void f2fs_put_page(struct page *page, int unlock) | |
952 | { | |
031fa8cc | 953 | if (!page) |
39a53e0c JK |
954 | return; |
955 | ||
956 | if (unlock) { | |
9850cf4a | 957 | f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page)); |
39a53e0c JK |
958 | unlock_page(page); |
959 | } | |
960 | page_cache_release(page); | |
961 | } | |
962 | ||
963 | static inline void f2fs_put_dnode(struct dnode_of_data *dn) | |
964 | { | |
965 | if (dn->node_page) | |
966 | f2fs_put_page(dn->node_page, 1); | |
967 | if (dn->inode_page && dn->node_page != dn->inode_page) | |
968 | f2fs_put_page(dn->inode_page, 0); | |
969 | dn->node_page = NULL; | |
970 | dn->inode_page = NULL; | |
971 | } | |
972 | ||
973 | static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name, | |
e8512d2e | 974 | size_t size) |
39a53e0c | 975 | { |
e8512d2e | 976 | return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL); |
39a53e0c JK |
977 | } |
978 | ||
7bd59381 GZ |
979 | static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep, |
980 | gfp_t flags) | |
981 | { | |
982 | void *entry; | |
983 | retry: | |
984 | entry = kmem_cache_alloc(cachep, flags); | |
985 | if (!entry) { | |
986 | cond_resched(); | |
987 | goto retry; | |
988 | } | |
989 | ||
990 | return entry; | |
991 | } | |
992 | ||
39a53e0c JK |
993 | #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino) |
994 | ||
995 | static inline bool IS_INODE(struct page *page) | |
996 | { | |
45590710 | 997 | struct f2fs_node *p = F2FS_NODE(page); |
39a53e0c JK |
998 | return RAW_IS_INODE(p); |
999 | } | |
1000 | ||
1001 | static inline __le32 *blkaddr_in_node(struct f2fs_node *node) | |
1002 | { | |
1003 | return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr; | |
1004 | } | |
1005 | ||
1006 | static inline block_t datablock_addr(struct page *node_page, | |
1007 | unsigned int offset) | |
1008 | { | |
1009 | struct f2fs_node *raw_node; | |
1010 | __le32 *addr_array; | |
45590710 | 1011 | raw_node = F2FS_NODE(node_page); |
39a53e0c JK |
1012 | addr_array = blkaddr_in_node(raw_node); |
1013 | return le32_to_cpu(addr_array[offset]); | |
1014 | } | |
1015 | ||
1016 | static inline int f2fs_test_bit(unsigned int nr, char *addr) | |
1017 | { | |
1018 | int mask; | |
1019 | ||
1020 | addr += (nr >> 3); | |
1021 | mask = 1 << (7 - (nr & 0x07)); | |
1022 | return mask & *addr; | |
1023 | } | |
1024 | ||
1025 | static inline int f2fs_set_bit(unsigned int nr, char *addr) | |
1026 | { | |
1027 | int mask; | |
1028 | int ret; | |
1029 | ||
1030 | addr += (nr >> 3); | |
1031 | mask = 1 << (7 - (nr & 0x07)); | |
1032 | ret = mask & *addr; | |
1033 | *addr |= mask; | |
1034 | return ret; | |
1035 | } | |
1036 | ||
1037 | static inline int f2fs_clear_bit(unsigned int nr, char *addr) | |
1038 | { | |
1039 | int mask; | |
1040 | int ret; | |
1041 | ||
1042 | addr += (nr >> 3); | |
1043 | mask = 1 << (7 - (nr & 0x07)); | |
1044 | ret = mask & *addr; | |
1045 | *addr &= ~mask; | |
1046 | return ret; | |
1047 | } | |
1048 | ||
1049 | /* used for f2fs_inode_info->flags */ | |
1050 | enum { | |
1051 | FI_NEW_INODE, /* indicate newly allocated inode */ | |
b3783873 | 1052 | FI_DIRTY_INODE, /* indicate inode is dirty or not */ |
ed57c27f | 1053 | FI_DIRTY_DIR, /* indicate directory has dirty pages */ |
39a53e0c JK |
1054 | FI_INC_LINK, /* need to increment i_nlink */ |
1055 | FI_ACL_MODE, /* indicate acl mode */ | |
1056 | FI_NO_ALLOC, /* should not allocate any blocks */ | |
699489bb | 1057 | FI_UPDATE_DIR, /* should update inode block for consistency */ |
74d0b917 | 1058 | FI_DELAY_IPUT, /* used for the recovery */ |
c11abd1a | 1059 | FI_NO_EXTENT, /* not to use the extent cache */ |
444c580f | 1060 | FI_INLINE_XATTR, /* used for inline xattr */ |
1001b347 | 1061 | FI_INLINE_DATA, /* used for inline data*/ |
34d67deb | 1062 | FI_INLINE_DENTRY, /* used for inline dentry */ |
fff04f90 JK |
1063 | FI_APPEND_WRITE, /* inode has appended data */ |
1064 | FI_UPDATE_WRITE, /* inode has in-place-update data */ | |
88b88a66 JK |
1065 | FI_NEED_IPU, /* used for ipu per file */ |
1066 | FI_ATOMIC_FILE, /* indicate atomic file */ | |
02a1335f | 1067 | FI_VOLATILE_FILE, /* indicate volatile file */ |
39a53e0c JK |
1068 | }; |
1069 | ||
1070 | static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag) | |
1071 | { | |
61e0f2d0 JK |
1072 | if (!test_bit(flag, &fi->flags)) |
1073 | set_bit(flag, &fi->flags); | |
39a53e0c JK |
1074 | } |
1075 | ||
1076 | static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag) | |
1077 | { | |
1078 | return test_bit(flag, &fi->flags); | |
1079 | } | |
1080 | ||
1081 | static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag) | |
1082 | { | |
61e0f2d0 JK |
1083 | if (test_bit(flag, &fi->flags)) |
1084 | clear_bit(flag, &fi->flags); | |
39a53e0c JK |
1085 | } |
1086 | ||
1087 | static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode) | |
1088 | { | |
1089 | fi->i_acl_mode = mode; | |
1090 | set_inode_flag(fi, FI_ACL_MODE); | |
1091 | } | |
1092 | ||
1093 | static inline int cond_clear_inode_flag(struct f2fs_inode_info *fi, int flag) | |
1094 | { | |
1095 | if (is_inode_flag_set(fi, FI_ACL_MODE)) { | |
1096 | clear_inode_flag(fi, FI_ACL_MODE); | |
1097 | return 1; | |
1098 | } | |
1099 | return 0; | |
1100 | } | |
1101 | ||
444c580f JK |
1102 | static inline void get_inline_info(struct f2fs_inode_info *fi, |
1103 | struct f2fs_inode *ri) | |
1104 | { | |
1105 | if (ri->i_inline & F2FS_INLINE_XATTR) | |
1106 | set_inode_flag(fi, FI_INLINE_XATTR); | |
1001b347 HL |
1107 | if (ri->i_inline & F2FS_INLINE_DATA) |
1108 | set_inode_flag(fi, FI_INLINE_DATA); | |
34d67deb CY |
1109 | if (ri->i_inline & F2FS_INLINE_DENTRY) |
1110 | set_inode_flag(fi, FI_INLINE_DENTRY); | |
444c580f JK |
1111 | } |
1112 | ||
1113 | static inline void set_raw_inline(struct f2fs_inode_info *fi, | |
1114 | struct f2fs_inode *ri) | |
1115 | { | |
1116 | ri->i_inline = 0; | |
1117 | ||
1118 | if (is_inode_flag_set(fi, FI_INLINE_XATTR)) | |
1119 | ri->i_inline |= F2FS_INLINE_XATTR; | |
1001b347 HL |
1120 | if (is_inode_flag_set(fi, FI_INLINE_DATA)) |
1121 | ri->i_inline |= F2FS_INLINE_DATA; | |
34d67deb CY |
1122 | if (is_inode_flag_set(fi, FI_INLINE_DENTRY)) |
1123 | ri->i_inline |= F2FS_INLINE_DENTRY; | |
444c580f JK |
1124 | } |
1125 | ||
987c7c31 CY |
1126 | static inline int f2fs_has_inline_xattr(struct inode *inode) |
1127 | { | |
1128 | return is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR); | |
1129 | } | |
1130 | ||
de93653f JK |
1131 | static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi) |
1132 | { | |
987c7c31 | 1133 | if (f2fs_has_inline_xattr(&fi->vfs_inode)) |
de93653f JK |
1134 | return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS; |
1135 | return DEF_ADDRS_PER_INODE; | |
1136 | } | |
1137 | ||
65985d93 JK |
1138 | static inline void *inline_xattr_addr(struct page *page) |
1139 | { | |
695fd1ed | 1140 | struct f2fs_inode *ri = F2FS_INODE(page); |
65985d93 JK |
1141 | return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE - |
1142 | F2FS_INLINE_XATTR_ADDRS]); | |
1143 | } | |
1144 | ||
1145 | static inline int inline_xattr_size(struct inode *inode) | |
1146 | { | |
987c7c31 | 1147 | if (f2fs_has_inline_xattr(inode)) |
65985d93 JK |
1148 | return F2FS_INLINE_XATTR_ADDRS << 2; |
1149 | else | |
1150 | return 0; | |
1151 | } | |
1152 | ||
0dbdc2ae JK |
1153 | static inline int f2fs_has_inline_data(struct inode *inode) |
1154 | { | |
1155 | return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA); | |
1156 | } | |
1157 | ||
88b88a66 JK |
1158 | static inline bool f2fs_is_atomic_file(struct inode *inode) |
1159 | { | |
1160 | return is_inode_flag_set(F2FS_I(inode), FI_ATOMIC_FILE); | |
1161 | } | |
1162 | ||
02a1335f JK |
1163 | static inline bool f2fs_is_volatile_file(struct inode *inode) |
1164 | { | |
1165 | return is_inode_flag_set(F2FS_I(inode), FI_VOLATILE_FILE); | |
1166 | } | |
1167 | ||
1001b347 HL |
1168 | static inline void *inline_data_addr(struct page *page) |
1169 | { | |
695fd1ed | 1170 | struct f2fs_inode *ri = F2FS_INODE(page); |
1001b347 HL |
1171 | return (void *)&(ri->i_addr[1]); |
1172 | } | |
1173 | ||
34d67deb CY |
1174 | static inline int f2fs_has_inline_dentry(struct inode *inode) |
1175 | { | |
1176 | return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DENTRY); | |
1177 | } | |
1178 | ||
1179 | static inline void *inline_dentry_addr(struct page *page) | |
1180 | { | |
1181 | struct f2fs_inode *ri = F2FS_INODE(page); | |
1182 | return (void *)&(ri->i_addr[1]); | |
1183 | } | |
1184 | ||
77888c1e JK |
1185 | static inline int f2fs_readonly(struct super_block *sb) |
1186 | { | |
1187 | return sb->s_flags & MS_RDONLY; | |
1188 | } | |
1189 | ||
1e968fdf JK |
1190 | static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi) |
1191 | { | |
1192 | return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG); | |
1193 | } | |
1194 | ||
744602cf JK |
1195 | static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi) |
1196 | { | |
1197 | set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG); | |
1198 | sbi->sb->s_flags |= MS_RDONLY; | |
1199 | } | |
1200 | ||
a6dda0e6 CH |
1201 | #define get_inode_mode(i) \ |
1202 | ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \ | |
1203 | (F2FS_I(i)->i_acl_mode) : ((i)->i_mode)) | |
1204 | ||
267378d4 CY |
1205 | /* get offset of first page in next direct node */ |
1206 | #define PGOFS_OF_NEXT_DNODE(pgofs, fi) \ | |
1207 | ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \ | |
1208 | (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \ | |
1209 | ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi)) | |
1210 | ||
39a53e0c JK |
1211 | /* |
1212 | * file.c | |
1213 | */ | |
1214 | int f2fs_sync_file(struct file *, loff_t, loff_t, int); | |
1215 | void truncate_data_blocks(struct dnode_of_data *); | |
764aa3e9 | 1216 | int truncate_blocks(struct inode *, u64, bool); |
39a53e0c | 1217 | void f2fs_truncate(struct inode *); |
2d4d9fb5 | 1218 | int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *); |
39a53e0c JK |
1219 | int f2fs_setattr(struct dentry *, struct iattr *); |
1220 | int truncate_hole(struct inode *, pgoff_t, pgoff_t); | |
b292dcab | 1221 | int truncate_data_blocks_range(struct dnode_of_data *, int); |
39a53e0c | 1222 | long f2fs_ioctl(struct file *, unsigned int, unsigned long); |
e9750824 | 1223 | long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long); |
39a53e0c JK |
1224 | |
1225 | /* | |
1226 | * inode.c | |
1227 | */ | |
1228 | void f2fs_set_inode_flags(struct inode *); | |
39a53e0c | 1229 | struct inode *f2fs_iget(struct super_block *, unsigned long); |
4660f9c0 | 1230 | int try_to_free_nats(struct f2fs_sb_info *, int); |
39a53e0c | 1231 | void update_inode(struct inode *, struct page *); |
744602cf | 1232 | void update_inode_page(struct inode *); |
39a53e0c JK |
1233 | int f2fs_write_inode(struct inode *, struct writeback_control *); |
1234 | void f2fs_evict_inode(struct inode *); | |
44c16156 | 1235 | void handle_failed_inode(struct inode *); |
39a53e0c JK |
1236 | |
1237 | /* | |
1238 | * namei.c | |
1239 | */ | |
1240 | struct dentry *f2fs_get_parent(struct dentry *child); | |
1241 | ||
1242 | /* | |
1243 | * dir.c | |
1244 | */ | |
dbeacf02 CY |
1245 | extern unsigned char f2fs_filetype_table[F2FS_FT_MAX]; |
1246 | bool early_match_name(size_t, f2fs_hash_t, struct f2fs_dir_entry *); | |
1247 | void set_de_type(struct f2fs_dir_entry *, struct inode *); | |
1248 | struct page *init_inode_metadata(struct inode *, struct inode *, | |
1249 | const struct qstr *); | |
1250 | void update_parent_metadata(struct inode *, struct inode *, unsigned int); | |
1251 | void f2fs_drop_nlink(struct inode *, struct inode *, struct page *); | |
39a53e0c JK |
1252 | struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *, |
1253 | struct page **); | |
1254 | struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **); | |
1255 | ino_t f2fs_inode_by_name(struct inode *, struct qstr *); | |
1256 | void f2fs_set_link(struct inode *, struct f2fs_dir_entry *, | |
1257 | struct page *, struct inode *); | |
1cd14caf | 1258 | int update_dent_inode(struct inode *, const struct qstr *); |
b7f7a5e0 | 1259 | int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *); |
dbeacf02 CY |
1260 | void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *, |
1261 | struct inode *); | |
b97a9b5d | 1262 | int f2fs_do_tmpfile(struct inode *, struct inode *); |
39a53e0c JK |
1263 | int f2fs_make_empty(struct inode *, struct inode *); |
1264 | bool f2fs_empty_dir(struct inode *); | |
1265 | ||
b7f7a5e0 AV |
1266 | static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode) |
1267 | { | |
1268 | return __f2fs_add_link(dentry->d_parent->d_inode, &dentry->d_name, | |
1269 | inode); | |
1270 | } | |
1271 | ||
39a53e0c JK |
1272 | /* |
1273 | * super.c | |
1274 | */ | |
1275 | int f2fs_sync_fs(struct super_block *, int); | |
a07ef784 NJ |
1276 | extern __printf(3, 4) |
1277 | void f2fs_msg(struct super_block *, const char *, const char *, ...); | |
39a53e0c JK |
1278 | |
1279 | /* | |
1280 | * hash.c | |
1281 | */ | |
eee6160f | 1282 | f2fs_hash_t f2fs_dentry_hash(const struct qstr *); |
39a53e0c JK |
1283 | |
1284 | /* | |
1285 | * node.c | |
1286 | */ | |
1287 | struct dnode_of_data; | |
1288 | struct node_info; | |
1289 | ||
6fb03f3a | 1290 | bool available_free_memory(struct f2fs_sb_info *, int); |
88bd02c9 JK |
1291 | bool is_checkpointed_node(struct f2fs_sb_info *, nid_t); |
1292 | bool has_fsynced_inode(struct f2fs_sb_info *, nid_t); | |
1293 | bool need_inode_block_update(struct f2fs_sb_info *, nid_t); | |
39a53e0c JK |
1294 | void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *); |
1295 | int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int); | |
1296 | int truncate_inode_blocks(struct inode *, pgoff_t); | |
4f16fb0f | 1297 | int truncate_xattr_node(struct inode *, struct page *); |
cfe58f9d | 1298 | int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t); |
58e674d6 | 1299 | void remove_inode_page(struct inode *); |
a014e037 | 1300 | struct page *new_inode_page(struct inode *); |
8ae8f162 | 1301 | struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *); |
39a53e0c JK |
1302 | void ra_node_page(struct f2fs_sb_info *, nid_t); |
1303 | struct page *get_node_page(struct f2fs_sb_info *, pgoff_t); | |
1304 | struct page *get_node_page_ra(struct page *, int); | |
1305 | void sync_inode_page(struct dnode_of_data *); | |
1306 | int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *); | |
1307 | bool alloc_nid(struct f2fs_sb_info *, nid_t *); | |
1308 | void alloc_nid_done(struct f2fs_sb_info *, nid_t); | |
1309 | void alloc_nid_failed(struct f2fs_sb_info *, nid_t); | |
70cfed88 | 1310 | void recover_inline_xattr(struct inode *, struct page *); |
1c35a90e | 1311 | void recover_xattr_data(struct inode *, struct page *, block_t); |
39a53e0c JK |
1312 | int recover_inode_page(struct f2fs_sb_info *, struct page *); |
1313 | int restore_node_summary(struct f2fs_sb_info *, unsigned int, | |
1314 | struct f2fs_summary_block *); | |
1315 | void flush_nat_entries(struct f2fs_sb_info *); | |
1316 | int build_node_manager(struct f2fs_sb_info *); | |
1317 | void destroy_node_manager(struct f2fs_sb_info *); | |
6e6093a8 | 1318 | int __init create_node_manager_caches(void); |
39a53e0c JK |
1319 | void destroy_node_manager_caches(void); |
1320 | ||
1321 | /* | |
1322 | * segment.c | |
1323 | */ | |
88b88a66 | 1324 | void register_inmem_page(struct inode *, struct page *); |
cbcb2872 | 1325 | void invalidate_inmem_page(struct inode *, struct page *); |
88b88a66 | 1326 | void commit_inmem_pages(struct inode *, bool); |
39a53e0c | 1327 | void f2fs_balance_fs(struct f2fs_sb_info *); |
4660f9c0 | 1328 | void f2fs_balance_fs_bg(struct f2fs_sb_info *); |
6b4afdd7 | 1329 | int f2fs_issue_flush(struct f2fs_sb_info *); |
2163d198 GZ |
1330 | int create_flush_cmd_control(struct f2fs_sb_info *); |
1331 | void destroy_flush_cmd_control(struct f2fs_sb_info *); | |
39a53e0c | 1332 | void invalidate_blocks(struct f2fs_sb_info *, block_t); |
5e443818 | 1333 | void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t); |
39a53e0c | 1334 | void clear_prefree_segments(struct f2fs_sb_info *); |
4b2fecc8 | 1335 | void release_discard_addrs(struct f2fs_sb_info *); |
cf2271e7 | 1336 | void discard_next_dnode(struct f2fs_sb_info *, block_t); |
39a53e0c JK |
1337 | int npages_for_summary_flush(struct f2fs_sb_info *); |
1338 | void allocate_new_segments(struct f2fs_sb_info *); | |
4b2fecc8 | 1339 | int f2fs_trim_fs(struct f2fs_sb_info *, struct fstrim_range *); |
39a53e0c | 1340 | struct page *get_sum_page(struct f2fs_sb_info *, unsigned int); |
577e3495 | 1341 | void write_meta_page(struct f2fs_sb_info *, struct page *); |
fb5566da JK |
1342 | void write_node_page(struct f2fs_sb_info *, struct page *, |
1343 | struct f2fs_io_info *, unsigned int, block_t, block_t *); | |
458e6197 JK |
1344 | void write_data_page(struct page *, struct dnode_of_data *, block_t *, |
1345 | struct f2fs_io_info *); | |
1346 | void rewrite_data_page(struct page *, block_t, struct f2fs_io_info *); | |
39a53e0c JK |
1347 | void recover_data_page(struct f2fs_sb_info *, struct page *, |
1348 | struct f2fs_summary *, block_t, block_t); | |
bfad7c2d JK |
1349 | void allocate_data_block(struct f2fs_sb_info *, struct page *, |
1350 | block_t, block_t *, struct f2fs_summary *, int); | |
5514f0aa | 1351 | void f2fs_wait_on_page_writeback(struct page *, enum page_type); |
39a53e0c JK |
1352 | void write_data_summaries(struct f2fs_sb_info *, block_t); |
1353 | void write_node_summaries(struct f2fs_sb_info *, block_t); | |
1354 | int lookup_journal_in_cursum(struct f2fs_summary_block *, | |
1355 | int, unsigned int, int); | |
4b2fecc8 | 1356 | void flush_sit_entries(struct f2fs_sb_info *, struct cp_control *); |
39a53e0c | 1357 | int build_segment_manager(struct f2fs_sb_info *); |
39a53e0c | 1358 | void destroy_segment_manager(struct f2fs_sb_info *); |
7fd9e544 JK |
1359 | int __init create_segment_manager_caches(void); |
1360 | void destroy_segment_manager_caches(void); | |
39a53e0c JK |
1361 | |
1362 | /* | |
1363 | * checkpoint.c | |
1364 | */ | |
1365 | struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t); | |
1366 | struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t); | |
4c521f49 JK |
1367 | struct page *get_meta_page_ra(struct f2fs_sb_info *, pgoff_t); |
1368 | int ra_meta_pages(struct f2fs_sb_info *, block_t, int, int); | |
39a53e0c | 1369 | long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long); |
fff04f90 JK |
1370 | void add_dirty_inode(struct f2fs_sb_info *, nid_t, int type); |
1371 | void remove_dirty_inode(struct f2fs_sb_info *, nid_t, int type); | |
6f12ac25 | 1372 | void release_dirty_inode(struct f2fs_sb_info *); |
fff04f90 | 1373 | bool exist_written_data(struct f2fs_sb_info *, nid_t, int); |
cbd56e7d JK |
1374 | int acquire_orphan_inode(struct f2fs_sb_info *); |
1375 | void release_orphan_inode(struct f2fs_sb_info *); | |
39a53e0c JK |
1376 | void add_orphan_inode(struct f2fs_sb_info *, nid_t); |
1377 | void remove_orphan_inode(struct f2fs_sb_info *, nid_t); | |
8f99a946 | 1378 | void recover_orphan_inodes(struct f2fs_sb_info *); |
39a53e0c | 1379 | int get_valid_checkpoint(struct f2fs_sb_info *); |
a7ffdbe2 | 1380 | void update_dirty_page(struct inode *, struct page *); |
5deb8267 | 1381 | void add_dirty_dir_inode(struct inode *); |
39a53e0c JK |
1382 | void remove_dirty_dir_inode(struct inode *); |
1383 | void sync_dirty_dir_inodes(struct f2fs_sb_info *); | |
75ab4cb8 | 1384 | void write_checkpoint(struct f2fs_sb_info *, struct cp_control *); |
6451e041 | 1385 | void init_ino_entry_info(struct f2fs_sb_info *); |
6e6093a8 | 1386 | int __init create_checkpoint_caches(void); |
39a53e0c JK |
1387 | void destroy_checkpoint_caches(void); |
1388 | ||
1389 | /* | |
1390 | * data.c | |
1391 | */ | |
458e6197 | 1392 | void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int); |
93dfe2ac JK |
1393 | int f2fs_submit_page_bio(struct f2fs_sb_info *, struct page *, block_t, int); |
1394 | void f2fs_submit_page_mbio(struct f2fs_sb_info *, struct page *, block_t, | |
458e6197 | 1395 | struct f2fs_io_info *); |
39a53e0c | 1396 | int reserve_new_block(struct dnode_of_data *); |
b600965c | 1397 | int f2fs_reserve_block(struct dnode_of_data *, pgoff_t); |
39a53e0c | 1398 | void update_extent_cache(block_t, struct dnode_of_data *); |
c718379b | 1399 | struct page *find_data_page(struct inode *, pgoff_t, bool); |
39a53e0c | 1400 | struct page *get_lock_data_page(struct inode *, pgoff_t); |
64aa7ed9 | 1401 | struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool); |
458e6197 | 1402 | int do_write_data_page(struct page *, struct f2fs_io_info *); |
9ab70134 | 1403 | int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64); |
39a53e0c JK |
1404 | |
1405 | /* | |
1406 | * gc.c | |
1407 | */ | |
1408 | int start_gc_thread(struct f2fs_sb_info *); | |
1409 | void stop_gc_thread(struct f2fs_sb_info *); | |
de93653f | 1410 | block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *); |
408e9375 | 1411 | int f2fs_gc(struct f2fs_sb_info *); |
39a53e0c | 1412 | void build_gc_manager(struct f2fs_sb_info *); |
6e6093a8 | 1413 | int __init create_gc_caches(void); |
39a53e0c JK |
1414 | void destroy_gc_caches(void); |
1415 | ||
1416 | /* | |
1417 | * recovery.c | |
1418 | */ | |
6ead1142 | 1419 | int recover_fsync_data(struct f2fs_sb_info *); |
39a53e0c JK |
1420 | bool space_for_roll_forward(struct f2fs_sb_info *); |
1421 | ||
1422 | /* | |
1423 | * debug.c | |
1424 | */ | |
1425 | #ifdef CONFIG_F2FS_STAT_FS | |
1426 | struct f2fs_stat_info { | |
1427 | struct list_head stat_list; | |
1428 | struct f2fs_sb_info *sbi; | |
39a53e0c JK |
1429 | int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs; |
1430 | int main_area_segs, main_area_sections, main_area_zones; | |
1431 | int hit_ext, total_ext; | |
1432 | int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta; | |
1433 | int nats, sits, fnids; | |
1434 | int total_count, utilization; | |
0dbdc2ae | 1435 | int bg_gc, inline_inode; |
39a53e0c JK |
1436 | unsigned int valid_count, valid_node_count, valid_inode_count; |
1437 | unsigned int bimodal, avg_vblocks; | |
1438 | int util_free, util_valid, util_invalid; | |
1439 | int rsvd_segs, overp_segs; | |
1440 | int dirty_count, node_pages, meta_pages; | |
942e0be6 | 1441 | int prefree_count, call_count, cp_count; |
39a53e0c JK |
1442 | int tot_segs, node_segs, data_segs, free_segs, free_secs; |
1443 | int tot_blks, data_blks, node_blks; | |
1444 | int curseg[NR_CURSEG_TYPE]; | |
1445 | int cursec[NR_CURSEG_TYPE]; | |
1446 | int curzone[NR_CURSEG_TYPE]; | |
1447 | ||
1448 | unsigned int segment_count[2]; | |
1449 | unsigned int block_count[2]; | |
1450 | unsigned base_mem, cache_mem; | |
1451 | }; | |
1452 | ||
963d4f7d GZ |
1453 | static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi) |
1454 | { | |
6c311ec6 | 1455 | return (struct f2fs_stat_info *)sbi->stat_info; |
963d4f7d GZ |
1456 | } |
1457 | ||
942e0be6 | 1458 | #define stat_inc_cp_count(si) ((si)->cp_count++) |
dcdfff65 JK |
1459 | #define stat_inc_call_count(si) ((si)->call_count++) |
1460 | #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++) | |
1461 | #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++) | |
1462 | #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--) | |
1463 | #define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++) | |
1464 | #define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++) | |
0dbdc2ae JK |
1465 | #define stat_inc_inline_inode(inode) \ |
1466 | do { \ | |
1467 | if (f2fs_has_inline_data(inode)) \ | |
4081363f | 1468 | ((F2FS_I_SB(inode))->inline_inode++); \ |
0dbdc2ae JK |
1469 | } while (0) |
1470 | #define stat_dec_inline_inode(inode) \ | |
1471 | do { \ | |
1472 | if (f2fs_has_inline_data(inode)) \ | |
4081363f | 1473 | ((F2FS_I_SB(inode))->inline_inode--); \ |
0dbdc2ae JK |
1474 | } while (0) |
1475 | ||
dcdfff65 JK |
1476 | #define stat_inc_seg_type(sbi, curseg) \ |
1477 | ((sbi)->segment_count[(curseg)->alloc_type]++) | |
1478 | #define stat_inc_block_count(sbi, curseg) \ | |
1479 | ((sbi)->block_count[(curseg)->alloc_type]++) | |
39a53e0c JK |
1480 | |
1481 | #define stat_inc_seg_count(sbi, type) \ | |
1482 | do { \ | |
963d4f7d | 1483 | struct f2fs_stat_info *si = F2FS_STAT(sbi); \ |
39a53e0c JK |
1484 | (si)->tot_segs++; \ |
1485 | if (type == SUM_TYPE_DATA) \ | |
1486 | si->data_segs++; \ | |
1487 | else \ | |
1488 | si->node_segs++; \ | |
1489 | } while (0) | |
1490 | ||
1491 | #define stat_inc_tot_blk_count(si, blks) \ | |
1492 | (si->tot_blks += (blks)) | |
1493 | ||
1494 | #define stat_inc_data_blk_count(sbi, blks) \ | |
1495 | do { \ | |
963d4f7d | 1496 | struct f2fs_stat_info *si = F2FS_STAT(sbi); \ |
39a53e0c JK |
1497 | stat_inc_tot_blk_count(si, blks); \ |
1498 | si->data_blks += (blks); \ | |
1499 | } while (0) | |
1500 | ||
1501 | #define stat_inc_node_blk_count(sbi, blks) \ | |
1502 | do { \ | |
963d4f7d | 1503 | struct f2fs_stat_info *si = F2FS_STAT(sbi); \ |
39a53e0c JK |
1504 | stat_inc_tot_blk_count(si, blks); \ |
1505 | si->node_blks += (blks); \ | |
1506 | } while (0) | |
1507 | ||
1508 | int f2fs_build_stats(struct f2fs_sb_info *); | |
1509 | void f2fs_destroy_stats(struct f2fs_sb_info *); | |
6e6093a8 | 1510 | void __init f2fs_create_root_stats(void); |
4589d25d | 1511 | void f2fs_destroy_root_stats(void); |
39a53e0c | 1512 | #else |
942e0be6 | 1513 | #define stat_inc_cp_count(si) |
39a53e0c | 1514 | #define stat_inc_call_count(si) |
dcdfff65 JK |
1515 | #define stat_inc_bggc_count(si) |
1516 | #define stat_inc_dirty_dir(sbi) | |
1517 | #define stat_dec_dirty_dir(sbi) | |
1518 | #define stat_inc_total_hit(sb) | |
1519 | #define stat_inc_read_hit(sb) | |
0dbdc2ae JK |
1520 | #define stat_inc_inline_inode(inode) |
1521 | #define stat_dec_inline_inode(inode) | |
dcdfff65 JK |
1522 | #define stat_inc_seg_type(sbi, curseg) |
1523 | #define stat_inc_block_count(sbi, curseg) | |
39a53e0c JK |
1524 | #define stat_inc_seg_count(si, type) |
1525 | #define stat_inc_tot_blk_count(si, blks) | |
1526 | #define stat_inc_data_blk_count(si, blks) | |
1527 | #define stat_inc_node_blk_count(sbi, blks) | |
1528 | ||
1529 | static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; } | |
1530 | static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { } | |
6e6093a8 | 1531 | static inline void __init f2fs_create_root_stats(void) { } |
4589d25d | 1532 | static inline void f2fs_destroy_root_stats(void) { } |
39a53e0c JK |
1533 | #endif |
1534 | ||
1535 | extern const struct file_operations f2fs_dir_operations; | |
1536 | extern const struct file_operations f2fs_file_operations; | |
1537 | extern const struct inode_operations f2fs_file_inode_operations; | |
1538 | extern const struct address_space_operations f2fs_dblock_aops; | |
1539 | extern const struct address_space_operations f2fs_node_aops; | |
1540 | extern const struct address_space_operations f2fs_meta_aops; | |
1541 | extern const struct inode_operations f2fs_dir_inode_operations; | |
1542 | extern const struct inode_operations f2fs_symlink_inode_operations; | |
1543 | extern const struct inode_operations f2fs_special_inode_operations; | |
1001b347 | 1544 | |
e18c65b2 HL |
1545 | /* |
1546 | * inline.c | |
1547 | */ | |
e18c65b2 HL |
1548 | bool f2fs_may_inline(struct inode *); |
1549 | int f2fs_read_inline_data(struct inode *, struct page *); | |
b067ba1f | 1550 | int f2fs_convert_inline_data(struct inode *, pgoff_t, struct page *); |
e18c65b2 | 1551 | int f2fs_write_inline_data(struct inode *, struct page *, unsigned int); |
8aa6f1c5 | 1552 | void truncate_inline_data(struct inode *, u64); |
0342fd30 | 1553 | bool recover_inline_data(struct inode *, struct page *); |
201a05be CY |
1554 | struct f2fs_dir_entry *find_in_inline_dir(struct inode *, struct qstr *, |
1555 | struct page **); | |
1556 | struct f2fs_dir_entry *f2fs_parent_inline_dir(struct inode *, struct page **); | |
1557 | int make_empty_inline_dir(struct inode *inode, struct inode *, struct page *); | |
1558 | int f2fs_add_inline_entry(struct inode *, const struct qstr *, struct inode *); | |
1559 | void f2fs_delete_inline_entry(struct f2fs_dir_entry *, struct page *, | |
1560 | struct inode *, struct inode *); | |
1561 | bool f2fs_empty_inline_dir(struct inode *); | |
1562 | int f2fs_read_inline_dir(struct file *, struct dir_context *); | |
39a53e0c | 1563 | #endif |