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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 |
6b4afdd7 | 49 | #define F2FS_MOUNT_FLUSH_MERGE 0x00000200 |
0f7b2abd | 50 | #define F2FS_MOUNT_NOBARRIER 0x00000400 |
39a53e0c JK |
51 | |
52 | #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option) | |
53 | #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option) | |
54 | #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option) | |
55 | ||
56 | #define ver_after(a, b) (typecheck(unsigned long long, a) && \ | |
57 | typecheck(unsigned long long, b) && \ | |
58 | ((long long)((a) - (b)) > 0)) | |
59 | ||
a9841c4d JK |
60 | typedef u32 block_t; /* |
61 | * should not change u32, since it is the on-disk block | |
62 | * address format, __le32. | |
63 | */ | |
39a53e0c JK |
64 | typedef u32 nid_t; |
65 | ||
66 | struct f2fs_mount_info { | |
67 | unsigned int opt; | |
68 | }; | |
69 | ||
7e586fa0 JK |
70 | #define CRCPOLY_LE 0xedb88320 |
71 | ||
72 | static inline __u32 f2fs_crc32(void *buf, size_t len) | |
39a53e0c | 73 | { |
7e586fa0 JK |
74 | unsigned char *p = (unsigned char *)buf; |
75 | __u32 crc = F2FS_SUPER_MAGIC; | |
76 | int i; | |
77 | ||
78 | while (len--) { | |
79 | crc ^= *p++; | |
80 | for (i = 0; i < 8; i++) | |
81 | crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0); | |
82 | } | |
83 | return crc; | |
39a53e0c JK |
84 | } |
85 | ||
7e586fa0 | 86 | static inline bool f2fs_crc_valid(__u32 blk_crc, void *buf, size_t buf_size) |
39a53e0c | 87 | { |
7e586fa0 | 88 | return f2fs_crc32(buf, buf_size) == blk_crc; |
39a53e0c JK |
89 | } |
90 | ||
91 | /* | |
92 | * For checkpoint manager | |
93 | */ | |
94 | enum { | |
95 | NAT_BITMAP, | |
96 | SIT_BITMAP | |
97 | }; | |
98 | ||
75ab4cb8 JK |
99 | enum { |
100 | CP_UMOUNT, | |
101 | CP_SYNC, | |
4b2fecc8 | 102 | CP_DISCARD, |
75ab4cb8 JK |
103 | }; |
104 | ||
105 | struct cp_control { | |
106 | int reason; | |
4b2fecc8 JK |
107 | __u64 trim_start; |
108 | __u64 trim_end; | |
109 | __u64 trim_minlen; | |
110 | __u64 trimmed; | |
75ab4cb8 JK |
111 | }; |
112 | ||
662befda | 113 | /* |
81c1a0f1 | 114 | * For CP/NAT/SIT/SSA readahead |
662befda CY |
115 | */ |
116 | enum { | |
117 | META_CP, | |
118 | META_NAT, | |
81c1a0f1 | 119 | META_SIT, |
4c521f49 JK |
120 | META_SSA, |
121 | META_POR, | |
662befda CY |
122 | }; |
123 | ||
6451e041 JK |
124 | /* for the list of ino */ |
125 | enum { | |
126 | ORPHAN_INO, /* for orphan ino list */ | |
fff04f90 JK |
127 | APPEND_INO, /* for append ino list */ |
128 | UPDATE_INO, /* for update ino list */ | |
6451e041 JK |
129 | MAX_INO_ENTRY, /* max. list */ |
130 | }; | |
131 | ||
132 | struct ino_entry { | |
39a53e0c JK |
133 | struct list_head list; /* list head */ |
134 | nid_t ino; /* inode number */ | |
135 | }; | |
136 | ||
137 | /* for the list of directory inodes */ | |
138 | struct dir_inode_entry { | |
139 | struct list_head list; /* list head */ | |
140 | struct inode *inode; /* vfs inode pointer */ | |
141 | }; | |
142 | ||
7fd9e544 JK |
143 | /* for the list of blockaddresses to be discarded */ |
144 | struct discard_entry { | |
145 | struct list_head list; /* list head */ | |
146 | block_t blkaddr; /* block address to be discarded */ | |
147 | int len; /* # of consecutive blocks of the discard */ | |
148 | }; | |
149 | ||
39a53e0c JK |
150 | /* for the list of fsync inodes, used only during recovery */ |
151 | struct fsync_inode_entry { | |
152 | struct list_head list; /* list head */ | |
153 | struct inode *inode; /* vfs inode pointer */ | |
c52e1b10 JK |
154 | block_t blkaddr; /* block address locating the last fsync */ |
155 | block_t last_dentry; /* block address locating the last dentry */ | |
156 | block_t last_inode; /* block address locating the last inode */ | |
39a53e0c JK |
157 | }; |
158 | ||
159 | #define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats)) | |
160 | #define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits)) | |
161 | ||
162 | #define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne) | |
163 | #define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid) | |
164 | #define sit_in_journal(sum, i) (sum->sit_j.entries[i].se) | |
165 | #define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno) | |
166 | ||
167 | static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i) | |
168 | { | |
169 | int before = nats_in_cursum(rs); | |
170 | rs->n_nats = cpu_to_le16(before + i); | |
171 | return before; | |
172 | } | |
173 | ||
174 | static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i) | |
175 | { | |
176 | int before = sits_in_cursum(rs); | |
177 | rs->n_sits = cpu_to_le16(before + i); | |
178 | return before; | |
179 | } | |
180 | ||
184a5cd2 CY |
181 | static inline bool __has_cursum_space(struct f2fs_summary_block *sum, int size, |
182 | int type) | |
183 | { | |
184 | if (type == NAT_JOURNAL) | |
185 | return nats_in_cursum(sum) + size <= NAT_JOURNAL_ENTRIES; | |
186 | ||
187 | return sits_in_cursum(sum) + size <= SIT_JOURNAL_ENTRIES; | |
188 | } | |
189 | ||
e9750824 NJ |
190 | /* |
191 | * ioctl commands | |
192 | */ | |
193 | #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS | |
194 | #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS | |
195 | ||
196 | #if defined(__KERNEL__) && defined(CONFIG_COMPAT) | |
197 | /* | |
198 | * ioctl commands in 32 bit emulation | |
199 | */ | |
200 | #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS | |
201 | #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS | |
202 | #endif | |
203 | ||
39a53e0c JK |
204 | /* |
205 | * For INODE and NODE manager | |
206 | */ | |
dbe6a5ff JK |
207 | /* |
208 | * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1 | |
209 | * as its node offset to distinguish from index node blocks. | |
210 | * But some bits are used to mark the node block. | |
211 | */ | |
212 | #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \ | |
213 | >> OFFSET_BIT_SHIFT) | |
266e97a8 JK |
214 | enum { |
215 | ALLOC_NODE, /* allocate a new node page if needed */ | |
216 | LOOKUP_NODE, /* look up a node without readahead */ | |
217 | LOOKUP_NODE_RA, /* | |
218 | * look up a node with readahead called | |
4f4124d0 | 219 | * by get_data_block. |
39a53e0c | 220 | */ |
266e97a8 JK |
221 | }; |
222 | ||
39a53e0c JK |
223 | #define F2FS_LINK_MAX 32000 /* maximum link count per file */ |
224 | ||
817202d9 CY |
225 | #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */ |
226 | ||
39a53e0c | 227 | /* for in-memory extent cache entry */ |
c11abd1a JK |
228 | #define F2FS_MIN_EXTENT_LEN 16 /* minimum extent length */ |
229 | ||
39a53e0c JK |
230 | struct extent_info { |
231 | rwlock_t ext_lock; /* rwlock for consistency */ | |
232 | unsigned int fofs; /* start offset in a file */ | |
233 | u32 blk_addr; /* start block address of the extent */ | |
111d2495 | 234 | unsigned int len; /* length of the extent */ |
39a53e0c JK |
235 | }; |
236 | ||
237 | /* | |
238 | * i_advise uses FADVISE_XXX_BIT. We can add additional hints later. | |
239 | */ | |
240 | #define FADVISE_COLD_BIT 0x01 | |
354a3399 | 241 | #define FADVISE_LOST_PINO_BIT 0x02 |
39a53e0c | 242 | |
ab9fa662 JK |
243 | #define DEF_DIR_LEVEL 0 |
244 | ||
39a53e0c JK |
245 | struct f2fs_inode_info { |
246 | struct inode vfs_inode; /* serve a vfs inode */ | |
247 | unsigned long i_flags; /* keep an inode flags for ioctl */ | |
248 | unsigned char i_advise; /* use to give file attribute hints */ | |
38431545 | 249 | unsigned char i_dir_level; /* use for dentry level for large dir */ |
39a53e0c | 250 | unsigned int i_current_depth; /* use only in directory structure */ |
6666e6aa | 251 | unsigned int i_pino; /* parent inode number */ |
39a53e0c JK |
252 | umode_t i_acl_mode; /* keep file acl mode temporarily */ |
253 | ||
254 | /* Use below internally in f2fs*/ | |
255 | unsigned long flags; /* use to pass per-file flags */ | |
d928bfbf | 256 | struct rw_semaphore i_sem; /* protect fi info */ |
a7ffdbe2 | 257 | atomic_t dirty_pages; /* # of dirty pages */ |
39a53e0c JK |
258 | f2fs_hash_t chash; /* hash value of given file name */ |
259 | unsigned int clevel; /* maximum level of given file name */ | |
260 | nid_t i_xattr_nid; /* node id that contains xattrs */ | |
e518ff81 | 261 | unsigned long long xattr_ver; /* cp version of xattr modification */ |
39a53e0c | 262 | struct extent_info ext; /* in-memory extent cache entry */ |
ed57c27f | 263 | struct dir_inode_entry *dirty_dir; /* the pointer of dirty dir */ |
39a53e0c JK |
264 | }; |
265 | ||
266 | static inline void get_extent_info(struct extent_info *ext, | |
267 | struct f2fs_extent i_ext) | |
268 | { | |
269 | write_lock(&ext->ext_lock); | |
270 | ext->fofs = le32_to_cpu(i_ext.fofs); | |
271 | ext->blk_addr = le32_to_cpu(i_ext.blk_addr); | |
272 | ext->len = le32_to_cpu(i_ext.len); | |
273 | write_unlock(&ext->ext_lock); | |
274 | } | |
275 | ||
276 | static inline void set_raw_extent(struct extent_info *ext, | |
277 | struct f2fs_extent *i_ext) | |
278 | { | |
279 | read_lock(&ext->ext_lock); | |
280 | i_ext->fofs = cpu_to_le32(ext->fofs); | |
281 | i_ext->blk_addr = cpu_to_le32(ext->blk_addr); | |
282 | i_ext->len = cpu_to_le32(ext->len); | |
283 | read_unlock(&ext->ext_lock); | |
284 | } | |
285 | ||
286 | struct f2fs_nm_info { | |
287 | block_t nat_blkaddr; /* base disk address of NAT */ | |
288 | nid_t max_nid; /* maximum possible node ids */ | |
7ee0eeab | 289 | nid_t available_nids; /* maximum available node ids */ |
39a53e0c | 290 | nid_t next_scan_nid; /* the next nid to be scanned */ |
cdfc41c1 | 291 | unsigned int ram_thresh; /* control the memory footprint */ |
39a53e0c JK |
292 | |
293 | /* NAT cache management */ | |
294 | struct radix_tree_root nat_root;/* root of the nat entry cache */ | |
295 | rwlock_t nat_tree_lock; /* protect nat_tree_lock */ | |
296 | unsigned int nat_cnt; /* the # of cached nat entries */ | |
297 | struct list_head nat_entries; /* cached nat entry list (clean) */ | |
298 | struct list_head dirty_nat_entries; /* cached nat entry list (dirty) */ | |
aec71382 CY |
299 | struct list_head nat_entry_set; /* nat entry set list */ |
300 | unsigned int dirty_nat_cnt; /* total num of nat entries in set */ | |
39a53e0c JK |
301 | |
302 | /* free node ids management */ | |
8a7ed66a | 303 | struct radix_tree_root free_nid_root;/* root of the free_nid cache */ |
39a53e0c JK |
304 | struct list_head free_nid_list; /* a list for free nids */ |
305 | spinlock_t free_nid_list_lock; /* protect free nid list */ | |
306 | unsigned int fcnt; /* the number of free node id */ | |
307 | struct mutex build_lock; /* lock for build free nids */ | |
308 | ||
309 | /* for checkpoint */ | |
310 | char *nat_bitmap; /* NAT bitmap pointer */ | |
311 | int bitmap_size; /* bitmap size */ | |
312 | }; | |
313 | ||
314 | /* | |
315 | * this structure is used as one of function parameters. | |
316 | * all the information are dedicated to a given direct node block determined | |
317 | * by the data offset in a file. | |
318 | */ | |
319 | struct dnode_of_data { | |
320 | struct inode *inode; /* vfs inode pointer */ | |
321 | struct page *inode_page; /* its inode page, NULL is possible */ | |
322 | struct page *node_page; /* cached direct node page */ | |
323 | nid_t nid; /* node id of the direct node block */ | |
324 | unsigned int ofs_in_node; /* data offset in the node page */ | |
325 | bool inode_page_locked; /* inode page is locked or not */ | |
326 | block_t data_blkaddr; /* block address of the node block */ | |
327 | }; | |
328 | ||
329 | static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode, | |
330 | struct page *ipage, struct page *npage, nid_t nid) | |
331 | { | |
d66d1f76 | 332 | memset(dn, 0, sizeof(*dn)); |
39a53e0c JK |
333 | dn->inode = inode; |
334 | dn->inode_page = ipage; | |
335 | dn->node_page = npage; | |
336 | dn->nid = nid; | |
39a53e0c JK |
337 | } |
338 | ||
339 | /* | |
340 | * For SIT manager | |
341 | * | |
342 | * By default, there are 6 active log areas across the whole main area. | |
343 | * When considering hot and cold data separation to reduce cleaning overhead, | |
344 | * we split 3 for data logs and 3 for node logs as hot, warm, and cold types, | |
345 | * respectively. | |
346 | * In the current design, you should not change the numbers intentionally. | |
347 | * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6 | |
348 | * logs individually according to the underlying devices. (default: 6) | |
349 | * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for | |
350 | * data and 8 for node logs. | |
351 | */ | |
352 | #define NR_CURSEG_DATA_TYPE (3) | |
353 | #define NR_CURSEG_NODE_TYPE (3) | |
354 | #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE) | |
355 | ||
356 | enum { | |
357 | CURSEG_HOT_DATA = 0, /* directory entry blocks */ | |
358 | CURSEG_WARM_DATA, /* data blocks */ | |
359 | CURSEG_COLD_DATA, /* multimedia or GCed data blocks */ | |
360 | CURSEG_HOT_NODE, /* direct node blocks of directory files */ | |
361 | CURSEG_WARM_NODE, /* direct node blocks of normal files */ | |
362 | CURSEG_COLD_NODE, /* indirect node blocks */ | |
363 | NO_CHECK_TYPE | |
364 | }; | |
365 | ||
6b4afdd7 | 366 | struct flush_cmd { |
6b4afdd7 | 367 | struct completion wait; |
721bd4d5 | 368 | struct llist_node llnode; |
6b4afdd7 JK |
369 | int ret; |
370 | }; | |
371 | ||
a688b9d9 GZ |
372 | struct flush_cmd_control { |
373 | struct task_struct *f2fs_issue_flush; /* flush thread */ | |
374 | wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */ | |
721bd4d5 GZ |
375 | struct llist_head issue_list; /* list for command issue */ |
376 | struct llist_node *dispatch_list; /* list for command dispatch */ | |
a688b9d9 GZ |
377 | }; |
378 | ||
39a53e0c JK |
379 | struct f2fs_sm_info { |
380 | struct sit_info *sit_info; /* whole segment information */ | |
381 | struct free_segmap_info *free_info; /* free segment information */ | |
382 | struct dirty_seglist_info *dirty_info; /* dirty segment information */ | |
383 | struct curseg_info *curseg_array; /* active segment information */ | |
384 | ||
39a53e0c JK |
385 | block_t seg0_blkaddr; /* block address of 0'th segment */ |
386 | block_t main_blkaddr; /* start block address of main area */ | |
387 | block_t ssa_blkaddr; /* start block address of SSA area */ | |
388 | ||
389 | unsigned int segment_count; /* total # of segments */ | |
390 | unsigned int main_segments; /* # of segments in main area */ | |
391 | unsigned int reserved_segments; /* # of reserved segments */ | |
392 | unsigned int ovp_segments; /* # of overprovision segments */ | |
81eb8d6e JK |
393 | |
394 | /* a threshold to reclaim prefree segments */ | |
395 | unsigned int rec_prefree_segments; | |
7fd9e544 JK |
396 | |
397 | /* for small discard management */ | |
398 | struct list_head discard_list; /* 4KB discard list */ | |
399 | int nr_discards; /* # of discards in the list */ | |
400 | int max_discards; /* max. discards to be issued */ | |
216fbd64 | 401 | |
184a5cd2 CY |
402 | struct list_head sit_entry_set; /* sit entry set list */ |
403 | ||
216fbd64 JK |
404 | unsigned int ipu_policy; /* in-place-update policy */ |
405 | unsigned int min_ipu_util; /* in-place-update threshold */ | |
c1ce1b02 | 406 | unsigned int min_fsync_blocks; /* threshold for fsync */ |
6b4afdd7 JK |
407 | |
408 | /* for flush command control */ | |
a688b9d9 GZ |
409 | struct flush_cmd_control *cmd_control_info; |
410 | ||
39a53e0c JK |
411 | }; |
412 | ||
39a53e0c JK |
413 | /* |
414 | * For superblock | |
415 | */ | |
416 | /* | |
417 | * COUNT_TYPE for monitoring | |
418 | * | |
419 | * f2fs monitors the number of several block types such as on-writeback, | |
420 | * dirty dentry blocks, dirty node blocks, and dirty meta blocks. | |
421 | */ | |
422 | enum count_type { | |
423 | F2FS_WRITEBACK, | |
424 | F2FS_DIRTY_DENTS, | |
425 | F2FS_DIRTY_NODES, | |
426 | F2FS_DIRTY_META, | |
427 | NR_COUNT_TYPE, | |
428 | }; | |
429 | ||
39a53e0c | 430 | /* |
e1c42045 | 431 | * The below are the page types of bios used in submit_bio(). |
39a53e0c JK |
432 | * The available types are: |
433 | * DATA User data pages. It operates as async mode. | |
434 | * NODE Node pages. It operates as async mode. | |
435 | * META FS metadata pages such as SIT, NAT, CP. | |
436 | * NR_PAGE_TYPE The number of page types. | |
437 | * META_FLUSH Make sure the previous pages are written | |
438 | * with waiting the bio's completion | |
439 | * ... Only can be used with META. | |
440 | */ | |
7d5e5109 | 441 | #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type)) |
39a53e0c JK |
442 | enum page_type { |
443 | DATA, | |
444 | NODE, | |
445 | META, | |
446 | NR_PAGE_TYPE, | |
447 | META_FLUSH, | |
448 | }; | |
449 | ||
458e6197 | 450 | struct f2fs_io_info { |
7e8f2308 GZ |
451 | enum page_type type; /* contains DATA/NODE/META/META_FLUSH */ |
452 | int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */ | |
458e6197 JK |
453 | }; |
454 | ||
93dfe2ac | 455 | #define is_read_io(rw) (((rw) & 1) == READ) |
1ff7bd3b | 456 | struct f2fs_bio_info { |
458e6197 | 457 | struct f2fs_sb_info *sbi; /* f2fs superblock */ |
1ff7bd3b JK |
458 | struct bio *bio; /* bios to merge */ |
459 | sector_t last_block_in_bio; /* last block number */ | |
458e6197 | 460 | struct f2fs_io_info fio; /* store buffered io info. */ |
df0f8dc0 | 461 | struct rw_semaphore io_rwsem; /* blocking op for bio */ |
1ff7bd3b JK |
462 | }; |
463 | ||
39a53e0c JK |
464 | struct f2fs_sb_info { |
465 | struct super_block *sb; /* pointer to VFS super block */ | |
5e176d54 | 466 | struct proc_dir_entry *s_proc; /* proc entry */ |
39a53e0c JK |
467 | struct buffer_head *raw_super_buf; /* buffer head of raw sb */ |
468 | struct f2fs_super_block *raw_super; /* raw super block pointer */ | |
469 | int s_dirty; /* dirty flag for checkpoint */ | |
2ae4c673 | 470 | bool need_fsck; /* need fsck.f2fs to fix */ |
39a53e0c JK |
471 | |
472 | /* for node-related operations */ | |
473 | struct f2fs_nm_info *nm_info; /* node manager */ | |
474 | struct inode *node_inode; /* cache node blocks */ | |
475 | ||
476 | /* for segment-related operations */ | |
477 | struct f2fs_sm_info *sm_info; /* segment manager */ | |
1ff7bd3b JK |
478 | |
479 | /* for bio operations */ | |
924b720b | 480 | struct f2fs_bio_info read_io; /* for read bios */ |
1ff7bd3b | 481 | struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */ |
1b1f559f | 482 | struct completion *wait_io; /* for completion bios */ |
39a53e0c JK |
483 | |
484 | /* for checkpoint */ | |
485 | struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */ | |
486 | struct inode *meta_inode; /* cache meta blocks */ | |
39936837 | 487 | struct mutex cp_mutex; /* checkpoint procedure lock */ |
e479556b | 488 | struct rw_semaphore cp_rwsem; /* blocking FS operations */ |
b3582c68 | 489 | struct rw_semaphore node_write; /* locking node writes */ |
39a53e0c | 490 | struct mutex writepages; /* mutex for writepages() */ |
aabe5136 | 491 | bool por_doing; /* recovery is doing or not */ |
fb51b5ef | 492 | wait_queue_head_t cp_wait; |
39a53e0c | 493 | |
6451e041 | 494 | /* for inode management */ |
39efac41 | 495 | struct radix_tree_root ino_root[MAX_INO_ENTRY]; /* ino entry array */ |
6451e041 JK |
496 | spinlock_t ino_lock[MAX_INO_ENTRY]; /* for ino entry lock */ |
497 | struct list_head ino_list[MAX_INO_ENTRY]; /* inode list head */ | |
498 | ||
499 | /* for orphan inode, use 0'th array */ | |
39a53e0c | 500 | unsigned int n_orphans; /* # of orphan inodes */ |
0d47c1ad | 501 | unsigned int max_orphans; /* max orphan inodes */ |
39a53e0c JK |
502 | |
503 | /* for directory inode management */ | |
504 | struct list_head dir_inode_list; /* dir inode list */ | |
505 | spinlock_t dir_inode_lock; /* for dir inode list lock */ | |
39a53e0c | 506 | |
e1c42045 | 507 | /* basic filesystem units */ |
39a53e0c JK |
508 | unsigned int log_sectors_per_block; /* log2 sectors per block */ |
509 | unsigned int log_blocksize; /* log2 block size */ | |
510 | unsigned int blocksize; /* block size */ | |
511 | unsigned int root_ino_num; /* root inode number*/ | |
512 | unsigned int node_ino_num; /* node inode number*/ | |
513 | unsigned int meta_ino_num; /* meta inode number*/ | |
514 | unsigned int log_blocks_per_seg; /* log2 blocks per segment */ | |
515 | unsigned int blocks_per_seg; /* blocks per segment */ | |
516 | unsigned int segs_per_sec; /* segments per section */ | |
517 | unsigned int secs_per_zone; /* sections per zone */ | |
518 | unsigned int total_sections; /* total section count */ | |
519 | unsigned int total_node_count; /* total node block count */ | |
520 | unsigned int total_valid_node_count; /* valid node block count */ | |
521 | unsigned int total_valid_inode_count; /* valid inode count */ | |
522 | int active_logs; /* # of active logs */ | |
ab9fa662 | 523 | int dir_level; /* directory level */ |
39a53e0c JK |
524 | |
525 | block_t user_block_count; /* # of user blocks */ | |
526 | block_t total_valid_block_count; /* # of valid blocks */ | |
527 | block_t alloc_valid_block_count; /* # of allocated blocks */ | |
528 | block_t last_valid_block_count; /* for recovery */ | |
529 | u32 s_next_generation; /* for NFS support */ | |
530 | atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */ | |
531 | ||
532 | struct f2fs_mount_info mount_opt; /* mount options */ | |
533 | ||
534 | /* for cleaning operations */ | |
535 | struct mutex gc_mutex; /* mutex for GC */ | |
536 | struct f2fs_gc_kthread *gc_thread; /* GC thread */ | |
5ec4e49f | 537 | unsigned int cur_victim_sec; /* current victim section num */ |
39a53e0c | 538 | |
b1c57c1c JK |
539 | /* maximum # of trials to find a victim segment for SSR and GC */ |
540 | unsigned int max_victim_search; | |
541 | ||
39a53e0c JK |
542 | /* |
543 | * for stat information. | |
544 | * one is for the LFS mode, and the other is for the SSR mode. | |
545 | */ | |
35b09d82 | 546 | #ifdef CONFIG_F2FS_STAT_FS |
39a53e0c JK |
547 | struct f2fs_stat_info *stat_info; /* FS status information */ |
548 | unsigned int segment_count[2]; /* # of allocated segments */ | |
549 | unsigned int block_count[2]; /* # of allocated blocks */ | |
39a53e0c | 550 | int total_hit_ext, read_hit_ext; /* extent cache hit ratio */ |
0dbdc2ae | 551 | int inline_inode; /* # of inline_data inodes */ |
39a53e0c | 552 | int bg_gc; /* background gc calls */ |
35b09d82 NJ |
553 | unsigned int n_dirty_dirs; /* # of dir inodes */ |
554 | #endif | |
555 | unsigned int last_victim[2]; /* last victim segment # */ | |
39a53e0c | 556 | spinlock_t stat_lock; /* lock for stat operations */ |
b59d0bae NJ |
557 | |
558 | /* For sysfs suppport */ | |
559 | struct kobject s_kobj; | |
560 | struct completion s_kobj_unregister; | |
39a53e0c JK |
561 | }; |
562 | ||
563 | /* | |
564 | * Inline functions | |
565 | */ | |
566 | static inline struct f2fs_inode_info *F2FS_I(struct inode *inode) | |
567 | { | |
568 | return container_of(inode, struct f2fs_inode_info, vfs_inode); | |
569 | } | |
570 | ||
571 | static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb) | |
572 | { | |
573 | return sb->s_fs_info; | |
574 | } | |
575 | ||
4081363f JK |
576 | static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode) |
577 | { | |
578 | return F2FS_SB(inode->i_sb); | |
579 | } | |
580 | ||
581 | static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping) | |
582 | { | |
583 | return F2FS_I_SB(mapping->host); | |
584 | } | |
585 | ||
586 | static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page) | |
587 | { | |
588 | return F2FS_M_SB(page->mapping); | |
589 | } | |
590 | ||
39a53e0c JK |
591 | static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi) |
592 | { | |
593 | return (struct f2fs_super_block *)(sbi->raw_super); | |
594 | } | |
595 | ||
596 | static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi) | |
597 | { | |
598 | return (struct f2fs_checkpoint *)(sbi->ckpt); | |
599 | } | |
600 | ||
45590710 GZ |
601 | static inline struct f2fs_node *F2FS_NODE(struct page *page) |
602 | { | |
603 | return (struct f2fs_node *)page_address(page); | |
604 | } | |
605 | ||
58bfaf44 JK |
606 | static inline struct f2fs_inode *F2FS_INODE(struct page *page) |
607 | { | |
608 | return &((struct f2fs_node *)page_address(page))->i; | |
609 | } | |
610 | ||
39a53e0c JK |
611 | static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi) |
612 | { | |
613 | return (struct f2fs_nm_info *)(sbi->nm_info); | |
614 | } | |
615 | ||
616 | static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi) | |
617 | { | |
618 | return (struct f2fs_sm_info *)(sbi->sm_info); | |
619 | } | |
620 | ||
621 | static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi) | |
622 | { | |
623 | return (struct sit_info *)(SM_I(sbi)->sit_info); | |
624 | } | |
625 | ||
626 | static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi) | |
627 | { | |
628 | return (struct free_segmap_info *)(SM_I(sbi)->free_info); | |
629 | } | |
630 | ||
631 | static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi) | |
632 | { | |
633 | return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info); | |
634 | } | |
635 | ||
9df27d98 GZ |
636 | static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi) |
637 | { | |
638 | return sbi->meta_inode->i_mapping; | |
639 | } | |
640 | ||
4ef51a8f JK |
641 | static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi) |
642 | { | |
643 | return sbi->node_inode->i_mapping; | |
644 | } | |
645 | ||
39a53e0c JK |
646 | static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info *sbi) |
647 | { | |
648 | sbi->s_dirty = 1; | |
649 | } | |
650 | ||
651 | static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info *sbi) | |
652 | { | |
653 | sbi->s_dirty = 0; | |
654 | } | |
655 | ||
d71b5564 JK |
656 | static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp) |
657 | { | |
658 | return le64_to_cpu(cp->checkpoint_ver); | |
659 | } | |
660 | ||
25ca923b JK |
661 | static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) |
662 | { | |
663 | unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); | |
664 | return ckpt_flags & f; | |
665 | } | |
666 | ||
667 | static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) | |
668 | { | |
669 | unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); | |
670 | ckpt_flags |= f; | |
671 | cp->ckpt_flags = cpu_to_le32(ckpt_flags); | |
672 | } | |
673 | ||
674 | static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) | |
675 | { | |
676 | unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); | |
677 | ckpt_flags &= (~f); | |
678 | cp->ckpt_flags = cpu_to_le32(ckpt_flags); | |
679 | } | |
680 | ||
e479556b | 681 | static inline void f2fs_lock_op(struct f2fs_sb_info *sbi) |
39936837 | 682 | { |
e479556b | 683 | down_read(&sbi->cp_rwsem); |
39936837 JK |
684 | } |
685 | ||
e479556b | 686 | static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi) |
39a53e0c | 687 | { |
e479556b | 688 | up_read(&sbi->cp_rwsem); |
39a53e0c JK |
689 | } |
690 | ||
e479556b | 691 | static inline void f2fs_lock_all(struct f2fs_sb_info *sbi) |
39a53e0c | 692 | { |
0daaad97 | 693 | f2fs_down_write(&sbi->cp_rwsem, &sbi->cp_mutex); |
39936837 JK |
694 | } |
695 | ||
e479556b | 696 | static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi) |
39936837 | 697 | { |
e479556b | 698 | up_write(&sbi->cp_rwsem); |
39a53e0c JK |
699 | } |
700 | ||
701 | /* | |
702 | * Check whether the given nid is within node id range. | |
703 | */ | |
064e0823 | 704 | static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid) |
39a53e0c | 705 | { |
d6b7d4b3 CY |
706 | if (unlikely(nid < F2FS_ROOT_INO(sbi))) |
707 | return -EINVAL; | |
cfb271d4 | 708 | if (unlikely(nid >= NM_I(sbi)->max_nid)) |
064e0823 NJ |
709 | return -EINVAL; |
710 | return 0; | |
39a53e0c JK |
711 | } |
712 | ||
713 | #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1 | |
714 | ||
715 | /* | |
716 | * Check whether the inode has blocks or not | |
717 | */ | |
718 | static inline int F2FS_HAS_BLOCKS(struct inode *inode) | |
719 | { | |
720 | if (F2FS_I(inode)->i_xattr_nid) | |
6c311ec6 | 721 | return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1; |
39a53e0c | 722 | else |
6c311ec6 | 723 | return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS; |
39a53e0c JK |
724 | } |
725 | ||
4bc8e9bc CY |
726 | static inline bool f2fs_has_xattr_block(unsigned int ofs) |
727 | { | |
728 | return ofs == XATTR_NODE_OFFSET; | |
729 | } | |
730 | ||
39a53e0c JK |
731 | static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi, |
732 | struct inode *inode, blkcnt_t count) | |
733 | { | |
734 | block_t valid_block_count; | |
735 | ||
736 | spin_lock(&sbi->stat_lock); | |
737 | valid_block_count = | |
738 | sbi->total_valid_block_count + (block_t)count; | |
cfb271d4 | 739 | if (unlikely(valid_block_count > sbi->user_block_count)) { |
39a53e0c JK |
740 | spin_unlock(&sbi->stat_lock); |
741 | return false; | |
742 | } | |
743 | inode->i_blocks += count; | |
744 | sbi->total_valid_block_count = valid_block_count; | |
745 | sbi->alloc_valid_block_count += (block_t)count; | |
746 | spin_unlock(&sbi->stat_lock); | |
747 | return true; | |
748 | } | |
749 | ||
da19b0dc | 750 | static inline void dec_valid_block_count(struct f2fs_sb_info *sbi, |
39a53e0c JK |
751 | struct inode *inode, |
752 | blkcnt_t count) | |
753 | { | |
754 | spin_lock(&sbi->stat_lock); | |
9850cf4a JK |
755 | f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count); |
756 | f2fs_bug_on(sbi, inode->i_blocks < count); | |
39a53e0c JK |
757 | inode->i_blocks -= count; |
758 | sbi->total_valid_block_count -= (block_t)count; | |
759 | spin_unlock(&sbi->stat_lock); | |
39a53e0c JK |
760 | } |
761 | ||
762 | static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type) | |
763 | { | |
764 | atomic_inc(&sbi->nr_pages[count_type]); | |
765 | F2FS_SET_SB_DIRT(sbi); | |
766 | } | |
767 | ||
a7ffdbe2 | 768 | static inline void inode_inc_dirty_pages(struct inode *inode) |
39a53e0c | 769 | { |
a7ffdbe2 JK |
770 | atomic_inc(&F2FS_I(inode)->dirty_pages); |
771 | if (S_ISDIR(inode->i_mode)) | |
772 | inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS); | |
39a53e0c JK |
773 | } |
774 | ||
775 | static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type) | |
776 | { | |
777 | atomic_dec(&sbi->nr_pages[count_type]); | |
778 | } | |
779 | ||
a7ffdbe2 | 780 | static inline void inode_dec_dirty_pages(struct inode *inode) |
39a53e0c | 781 | { |
a7ffdbe2 | 782 | if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode)) |
1fe54f9d JK |
783 | return; |
784 | ||
a7ffdbe2 JK |
785 | atomic_dec(&F2FS_I(inode)->dirty_pages); |
786 | ||
787 | if (S_ISDIR(inode->i_mode)) | |
788 | dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS); | |
39a53e0c JK |
789 | } |
790 | ||
791 | static inline int get_pages(struct f2fs_sb_info *sbi, int count_type) | |
792 | { | |
793 | return atomic_read(&sbi->nr_pages[count_type]); | |
794 | } | |
795 | ||
a7ffdbe2 | 796 | static inline int get_dirty_pages(struct inode *inode) |
f8b2c1f9 | 797 | { |
a7ffdbe2 | 798 | return atomic_read(&F2FS_I(inode)->dirty_pages); |
f8b2c1f9 JK |
799 | } |
800 | ||
5ac206cf NJ |
801 | static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type) |
802 | { | |
803 | unsigned int pages_per_sec = sbi->segs_per_sec * | |
804 | (1 << sbi->log_blocks_per_seg); | |
805 | return ((get_pages(sbi, block_type) + pages_per_sec - 1) | |
806 | >> sbi->log_blocks_per_seg) / sbi->segs_per_sec; | |
807 | } | |
808 | ||
39a53e0c JK |
809 | static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi) |
810 | { | |
8b8343fa | 811 | return sbi->total_valid_block_count; |
39a53e0c JK |
812 | } |
813 | ||
814 | static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag) | |
815 | { | |
816 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
817 | ||
818 | /* return NAT or SIT bitmap */ | |
819 | if (flag == NAT_BITMAP) | |
820 | return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize); | |
821 | else if (flag == SIT_BITMAP) | |
822 | return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize); | |
823 | ||
824 | return 0; | |
825 | } | |
826 | ||
827 | static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag) | |
828 | { | |
829 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
1dbe4152 CL |
830 | int offset; |
831 | ||
832 | if (le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload) > 0) { | |
833 | if (flag == NAT_BITMAP) | |
834 | return &ckpt->sit_nat_version_bitmap; | |
835 | else | |
65b85ccc | 836 | return (unsigned char *)ckpt + F2FS_BLKSIZE; |
1dbe4152 CL |
837 | } else { |
838 | offset = (flag == NAT_BITMAP) ? | |
25ca923b | 839 | le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0; |
1dbe4152 CL |
840 | return &ckpt->sit_nat_version_bitmap + offset; |
841 | } | |
39a53e0c JK |
842 | } |
843 | ||
844 | static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi) | |
845 | { | |
846 | block_t start_addr; | |
847 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
d71b5564 | 848 | unsigned long long ckpt_version = cur_cp_version(ckpt); |
39a53e0c | 849 | |
25ca923b | 850 | start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr); |
39a53e0c JK |
851 | |
852 | /* | |
853 | * odd numbered checkpoint should at cp segment 0 | |
e1c42045 | 854 | * and even segment must be at cp segment 1 |
39a53e0c JK |
855 | */ |
856 | if (!(ckpt_version & 1)) | |
857 | start_addr += sbi->blocks_per_seg; | |
858 | ||
859 | return start_addr; | |
860 | } | |
861 | ||
862 | static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi) | |
863 | { | |
864 | return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum); | |
865 | } | |
866 | ||
867 | static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi, | |
ef86d709 | 868 | struct inode *inode) |
39a53e0c JK |
869 | { |
870 | block_t valid_block_count; | |
871 | unsigned int valid_node_count; | |
872 | ||
873 | spin_lock(&sbi->stat_lock); | |
874 | ||
ef86d709 | 875 | valid_block_count = sbi->total_valid_block_count + 1; |
cfb271d4 | 876 | if (unlikely(valid_block_count > sbi->user_block_count)) { |
39a53e0c JK |
877 | spin_unlock(&sbi->stat_lock); |
878 | return false; | |
879 | } | |
880 | ||
ef86d709 | 881 | valid_node_count = sbi->total_valid_node_count + 1; |
cfb271d4 | 882 | if (unlikely(valid_node_count > sbi->total_node_count)) { |
39a53e0c JK |
883 | spin_unlock(&sbi->stat_lock); |
884 | return false; | |
885 | } | |
886 | ||
887 | if (inode) | |
ef86d709 GZ |
888 | inode->i_blocks++; |
889 | ||
890 | sbi->alloc_valid_block_count++; | |
891 | sbi->total_valid_node_count++; | |
892 | sbi->total_valid_block_count++; | |
39a53e0c JK |
893 | spin_unlock(&sbi->stat_lock); |
894 | ||
895 | return true; | |
896 | } | |
897 | ||
898 | static inline void dec_valid_node_count(struct f2fs_sb_info *sbi, | |
ef86d709 | 899 | struct inode *inode) |
39a53e0c JK |
900 | { |
901 | spin_lock(&sbi->stat_lock); | |
902 | ||
9850cf4a JK |
903 | f2fs_bug_on(sbi, !sbi->total_valid_block_count); |
904 | f2fs_bug_on(sbi, !sbi->total_valid_node_count); | |
905 | f2fs_bug_on(sbi, !inode->i_blocks); | |
39a53e0c | 906 | |
ef86d709 GZ |
907 | inode->i_blocks--; |
908 | sbi->total_valid_node_count--; | |
909 | sbi->total_valid_block_count--; | |
39a53e0c JK |
910 | |
911 | spin_unlock(&sbi->stat_lock); | |
912 | } | |
913 | ||
914 | static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi) | |
915 | { | |
8b8343fa | 916 | return sbi->total_valid_node_count; |
39a53e0c JK |
917 | } |
918 | ||
919 | static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi) | |
920 | { | |
921 | spin_lock(&sbi->stat_lock); | |
9850cf4a | 922 | f2fs_bug_on(sbi, sbi->total_valid_inode_count == sbi->total_node_count); |
39a53e0c JK |
923 | sbi->total_valid_inode_count++; |
924 | spin_unlock(&sbi->stat_lock); | |
925 | } | |
926 | ||
0e80220a | 927 | static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi) |
39a53e0c JK |
928 | { |
929 | spin_lock(&sbi->stat_lock); | |
9850cf4a | 930 | f2fs_bug_on(sbi, !sbi->total_valid_inode_count); |
39a53e0c JK |
931 | sbi->total_valid_inode_count--; |
932 | spin_unlock(&sbi->stat_lock); | |
39a53e0c JK |
933 | } |
934 | ||
935 | static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi) | |
936 | { | |
8b8343fa | 937 | return sbi->total_valid_inode_count; |
39a53e0c JK |
938 | } |
939 | ||
940 | static inline void f2fs_put_page(struct page *page, int unlock) | |
941 | { | |
031fa8cc | 942 | if (!page) |
39a53e0c JK |
943 | return; |
944 | ||
945 | if (unlock) { | |
9850cf4a | 946 | f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page)); |
39a53e0c JK |
947 | unlock_page(page); |
948 | } | |
949 | page_cache_release(page); | |
950 | } | |
951 | ||
952 | static inline void f2fs_put_dnode(struct dnode_of_data *dn) | |
953 | { | |
954 | if (dn->node_page) | |
955 | f2fs_put_page(dn->node_page, 1); | |
956 | if (dn->inode_page && dn->node_page != dn->inode_page) | |
957 | f2fs_put_page(dn->inode_page, 0); | |
958 | dn->node_page = NULL; | |
959 | dn->inode_page = NULL; | |
960 | } | |
961 | ||
962 | static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name, | |
e8512d2e | 963 | size_t size) |
39a53e0c | 964 | { |
e8512d2e | 965 | return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL); |
39a53e0c JK |
966 | } |
967 | ||
7bd59381 GZ |
968 | static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep, |
969 | gfp_t flags) | |
970 | { | |
971 | void *entry; | |
972 | retry: | |
973 | entry = kmem_cache_alloc(cachep, flags); | |
974 | if (!entry) { | |
975 | cond_resched(); | |
976 | goto retry; | |
977 | } | |
978 | ||
979 | return entry; | |
980 | } | |
981 | ||
39a53e0c JK |
982 | #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino) |
983 | ||
984 | static inline bool IS_INODE(struct page *page) | |
985 | { | |
45590710 | 986 | struct f2fs_node *p = F2FS_NODE(page); |
39a53e0c JK |
987 | return RAW_IS_INODE(p); |
988 | } | |
989 | ||
990 | static inline __le32 *blkaddr_in_node(struct f2fs_node *node) | |
991 | { | |
992 | return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr; | |
993 | } | |
994 | ||
995 | static inline block_t datablock_addr(struct page *node_page, | |
996 | unsigned int offset) | |
997 | { | |
998 | struct f2fs_node *raw_node; | |
999 | __le32 *addr_array; | |
45590710 | 1000 | raw_node = F2FS_NODE(node_page); |
39a53e0c JK |
1001 | addr_array = blkaddr_in_node(raw_node); |
1002 | return le32_to_cpu(addr_array[offset]); | |
1003 | } | |
1004 | ||
1005 | static inline int f2fs_test_bit(unsigned int nr, char *addr) | |
1006 | { | |
1007 | int mask; | |
1008 | ||
1009 | addr += (nr >> 3); | |
1010 | mask = 1 << (7 - (nr & 0x07)); | |
1011 | return mask & *addr; | |
1012 | } | |
1013 | ||
1014 | static inline int f2fs_set_bit(unsigned int nr, char *addr) | |
1015 | { | |
1016 | int mask; | |
1017 | int ret; | |
1018 | ||
1019 | addr += (nr >> 3); | |
1020 | mask = 1 << (7 - (nr & 0x07)); | |
1021 | ret = mask & *addr; | |
1022 | *addr |= mask; | |
1023 | return ret; | |
1024 | } | |
1025 | ||
1026 | static inline int f2fs_clear_bit(unsigned int nr, char *addr) | |
1027 | { | |
1028 | int mask; | |
1029 | int ret; | |
1030 | ||
1031 | addr += (nr >> 3); | |
1032 | mask = 1 << (7 - (nr & 0x07)); | |
1033 | ret = mask & *addr; | |
1034 | *addr &= ~mask; | |
1035 | return ret; | |
1036 | } | |
1037 | ||
1038 | /* used for f2fs_inode_info->flags */ | |
1039 | enum { | |
1040 | FI_NEW_INODE, /* indicate newly allocated inode */ | |
b3783873 | 1041 | FI_DIRTY_INODE, /* indicate inode is dirty or not */ |
ed57c27f | 1042 | FI_DIRTY_DIR, /* indicate directory has dirty pages */ |
39a53e0c JK |
1043 | FI_INC_LINK, /* need to increment i_nlink */ |
1044 | FI_ACL_MODE, /* indicate acl mode */ | |
1045 | FI_NO_ALLOC, /* should not allocate any blocks */ | |
699489bb | 1046 | FI_UPDATE_DIR, /* should update inode block for consistency */ |
74d0b917 | 1047 | FI_DELAY_IPUT, /* used for the recovery */ |
c11abd1a | 1048 | FI_NO_EXTENT, /* not to use the extent cache */ |
444c580f | 1049 | FI_INLINE_XATTR, /* used for inline xattr */ |
1001b347 | 1050 | FI_INLINE_DATA, /* used for inline data*/ |
fff04f90 JK |
1051 | FI_APPEND_WRITE, /* inode has appended data */ |
1052 | FI_UPDATE_WRITE, /* inode has in-place-update data */ | |
ea1aa12c | 1053 | FI_NEED_IPU, /* used fo ipu for fdatasync */ |
39a53e0c JK |
1054 | }; |
1055 | ||
1056 | static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag) | |
1057 | { | |
61e0f2d0 JK |
1058 | if (!test_bit(flag, &fi->flags)) |
1059 | set_bit(flag, &fi->flags); | |
39a53e0c JK |
1060 | } |
1061 | ||
1062 | static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag) | |
1063 | { | |
1064 | return test_bit(flag, &fi->flags); | |
1065 | } | |
1066 | ||
1067 | static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag) | |
1068 | { | |
61e0f2d0 JK |
1069 | if (test_bit(flag, &fi->flags)) |
1070 | clear_bit(flag, &fi->flags); | |
39a53e0c JK |
1071 | } |
1072 | ||
1073 | static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode) | |
1074 | { | |
1075 | fi->i_acl_mode = mode; | |
1076 | set_inode_flag(fi, FI_ACL_MODE); | |
1077 | } | |
1078 | ||
1079 | static inline int cond_clear_inode_flag(struct f2fs_inode_info *fi, int flag) | |
1080 | { | |
1081 | if (is_inode_flag_set(fi, FI_ACL_MODE)) { | |
1082 | clear_inode_flag(fi, FI_ACL_MODE); | |
1083 | return 1; | |
1084 | } | |
1085 | return 0; | |
1086 | } | |
1087 | ||
444c580f JK |
1088 | static inline void get_inline_info(struct f2fs_inode_info *fi, |
1089 | struct f2fs_inode *ri) | |
1090 | { | |
1091 | if (ri->i_inline & F2FS_INLINE_XATTR) | |
1092 | set_inode_flag(fi, FI_INLINE_XATTR); | |
1001b347 HL |
1093 | if (ri->i_inline & F2FS_INLINE_DATA) |
1094 | set_inode_flag(fi, FI_INLINE_DATA); | |
444c580f JK |
1095 | } |
1096 | ||
1097 | static inline void set_raw_inline(struct f2fs_inode_info *fi, | |
1098 | struct f2fs_inode *ri) | |
1099 | { | |
1100 | ri->i_inline = 0; | |
1101 | ||
1102 | if (is_inode_flag_set(fi, FI_INLINE_XATTR)) | |
1103 | ri->i_inline |= F2FS_INLINE_XATTR; | |
1001b347 HL |
1104 | if (is_inode_flag_set(fi, FI_INLINE_DATA)) |
1105 | ri->i_inline |= F2FS_INLINE_DATA; | |
444c580f JK |
1106 | } |
1107 | ||
987c7c31 CY |
1108 | static inline int f2fs_has_inline_xattr(struct inode *inode) |
1109 | { | |
1110 | return is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR); | |
1111 | } | |
1112 | ||
de93653f JK |
1113 | static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi) |
1114 | { | |
987c7c31 | 1115 | if (f2fs_has_inline_xattr(&fi->vfs_inode)) |
de93653f JK |
1116 | return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS; |
1117 | return DEF_ADDRS_PER_INODE; | |
1118 | } | |
1119 | ||
65985d93 JK |
1120 | static inline void *inline_xattr_addr(struct page *page) |
1121 | { | |
695fd1ed | 1122 | struct f2fs_inode *ri = F2FS_INODE(page); |
65985d93 JK |
1123 | return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE - |
1124 | F2FS_INLINE_XATTR_ADDRS]); | |
1125 | } | |
1126 | ||
1127 | static inline int inline_xattr_size(struct inode *inode) | |
1128 | { | |
987c7c31 | 1129 | if (f2fs_has_inline_xattr(inode)) |
65985d93 JK |
1130 | return F2FS_INLINE_XATTR_ADDRS << 2; |
1131 | else | |
1132 | return 0; | |
1133 | } | |
1134 | ||
0dbdc2ae JK |
1135 | static inline int f2fs_has_inline_data(struct inode *inode) |
1136 | { | |
1137 | return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA); | |
1138 | } | |
1139 | ||
1001b347 HL |
1140 | static inline void *inline_data_addr(struct page *page) |
1141 | { | |
695fd1ed | 1142 | struct f2fs_inode *ri = F2FS_INODE(page); |
1001b347 HL |
1143 | return (void *)&(ri->i_addr[1]); |
1144 | } | |
1145 | ||
77888c1e JK |
1146 | static inline int f2fs_readonly(struct super_block *sb) |
1147 | { | |
1148 | return sb->s_flags & MS_RDONLY; | |
1149 | } | |
1150 | ||
1e968fdf JK |
1151 | static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi) |
1152 | { | |
1153 | return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG); | |
1154 | } | |
1155 | ||
744602cf JK |
1156 | static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi) |
1157 | { | |
1158 | set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG); | |
1159 | sbi->sb->s_flags |= MS_RDONLY; | |
1160 | } | |
1161 | ||
a6dda0e6 CH |
1162 | #define get_inode_mode(i) \ |
1163 | ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \ | |
1164 | (F2FS_I(i)->i_acl_mode) : ((i)->i_mode)) | |
1165 | ||
267378d4 CY |
1166 | /* get offset of first page in next direct node */ |
1167 | #define PGOFS_OF_NEXT_DNODE(pgofs, fi) \ | |
1168 | ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \ | |
1169 | (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \ | |
1170 | ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi)) | |
1171 | ||
39a53e0c JK |
1172 | /* |
1173 | * file.c | |
1174 | */ | |
1175 | int f2fs_sync_file(struct file *, loff_t, loff_t, int); | |
1176 | void truncate_data_blocks(struct dnode_of_data *); | |
764aa3e9 | 1177 | int truncate_blocks(struct inode *, u64, bool); |
39a53e0c | 1178 | void f2fs_truncate(struct inode *); |
2d4d9fb5 | 1179 | int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *); |
39a53e0c JK |
1180 | int f2fs_setattr(struct dentry *, struct iattr *); |
1181 | int truncate_hole(struct inode *, pgoff_t, pgoff_t); | |
b292dcab | 1182 | int truncate_data_blocks_range(struct dnode_of_data *, int); |
39a53e0c | 1183 | long f2fs_ioctl(struct file *, unsigned int, unsigned long); |
e9750824 | 1184 | long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long); |
39a53e0c JK |
1185 | |
1186 | /* | |
1187 | * inode.c | |
1188 | */ | |
1189 | void f2fs_set_inode_flags(struct inode *); | |
39a53e0c | 1190 | struct inode *f2fs_iget(struct super_block *, unsigned long); |
4660f9c0 | 1191 | int try_to_free_nats(struct f2fs_sb_info *, int); |
39a53e0c | 1192 | void update_inode(struct inode *, struct page *); |
744602cf | 1193 | void update_inode_page(struct inode *); |
39a53e0c JK |
1194 | int f2fs_write_inode(struct inode *, struct writeback_control *); |
1195 | void f2fs_evict_inode(struct inode *); | |
1196 | ||
1197 | /* | |
1198 | * namei.c | |
1199 | */ | |
1200 | struct dentry *f2fs_get_parent(struct dentry *child); | |
1201 | ||
1202 | /* | |
1203 | * dir.c | |
1204 | */ | |
1205 | struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *, | |
1206 | struct page **); | |
1207 | struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **); | |
1208 | ino_t f2fs_inode_by_name(struct inode *, struct qstr *); | |
1209 | void f2fs_set_link(struct inode *, struct f2fs_dir_entry *, | |
1210 | struct page *, struct inode *); | |
1cd14caf | 1211 | int update_dent_inode(struct inode *, const struct qstr *); |
b7f7a5e0 | 1212 | int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *); |
39a53e0c | 1213 | void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *); |
b97a9b5d | 1214 | int f2fs_do_tmpfile(struct inode *, struct inode *); |
39a53e0c JK |
1215 | int f2fs_make_empty(struct inode *, struct inode *); |
1216 | bool f2fs_empty_dir(struct inode *); | |
1217 | ||
b7f7a5e0 AV |
1218 | static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode) |
1219 | { | |
1220 | return __f2fs_add_link(dentry->d_parent->d_inode, &dentry->d_name, | |
1221 | inode); | |
1222 | } | |
1223 | ||
39a53e0c JK |
1224 | /* |
1225 | * super.c | |
1226 | */ | |
1227 | int f2fs_sync_fs(struct super_block *, int); | |
a07ef784 NJ |
1228 | extern __printf(3, 4) |
1229 | void f2fs_msg(struct super_block *, const char *, const char *, ...); | |
39a53e0c JK |
1230 | |
1231 | /* | |
1232 | * hash.c | |
1233 | */ | |
eee6160f | 1234 | f2fs_hash_t f2fs_dentry_hash(const struct qstr *); |
39a53e0c JK |
1235 | |
1236 | /* | |
1237 | * node.c | |
1238 | */ | |
1239 | struct dnode_of_data; | |
1240 | struct node_info; | |
1241 | ||
6fb03f3a | 1242 | bool available_free_memory(struct f2fs_sb_info *, int); |
88bd02c9 JK |
1243 | bool is_checkpointed_node(struct f2fs_sb_info *, nid_t); |
1244 | bool has_fsynced_inode(struct f2fs_sb_info *, nid_t); | |
1245 | bool need_inode_block_update(struct f2fs_sb_info *, nid_t); | |
39a53e0c JK |
1246 | void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *); |
1247 | int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int); | |
1248 | int truncate_inode_blocks(struct inode *, pgoff_t); | |
4f16fb0f | 1249 | int truncate_xattr_node(struct inode *, struct page *); |
cfe58f9d | 1250 | int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t); |
58e674d6 | 1251 | void remove_inode_page(struct inode *); |
a014e037 | 1252 | struct page *new_inode_page(struct inode *); |
8ae8f162 | 1253 | struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *); |
39a53e0c JK |
1254 | void ra_node_page(struct f2fs_sb_info *, nid_t); |
1255 | struct page *get_node_page(struct f2fs_sb_info *, pgoff_t); | |
1256 | struct page *get_node_page_ra(struct page *, int); | |
1257 | void sync_inode_page(struct dnode_of_data *); | |
1258 | int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *); | |
1259 | bool alloc_nid(struct f2fs_sb_info *, nid_t *); | |
1260 | void alloc_nid_done(struct f2fs_sb_info *, nid_t); | |
1261 | void alloc_nid_failed(struct f2fs_sb_info *, nid_t); | |
70cfed88 | 1262 | void recover_inline_xattr(struct inode *, struct page *); |
1c35a90e | 1263 | void recover_xattr_data(struct inode *, struct page *, block_t); |
39a53e0c JK |
1264 | int recover_inode_page(struct f2fs_sb_info *, struct page *); |
1265 | int restore_node_summary(struct f2fs_sb_info *, unsigned int, | |
1266 | struct f2fs_summary_block *); | |
1267 | void flush_nat_entries(struct f2fs_sb_info *); | |
1268 | int build_node_manager(struct f2fs_sb_info *); | |
1269 | void destroy_node_manager(struct f2fs_sb_info *); | |
6e6093a8 | 1270 | int __init create_node_manager_caches(void); |
39a53e0c JK |
1271 | void destroy_node_manager_caches(void); |
1272 | ||
1273 | /* | |
1274 | * segment.c | |
1275 | */ | |
1276 | void f2fs_balance_fs(struct f2fs_sb_info *); | |
4660f9c0 | 1277 | void f2fs_balance_fs_bg(struct f2fs_sb_info *); |
6b4afdd7 | 1278 | int f2fs_issue_flush(struct f2fs_sb_info *); |
2163d198 GZ |
1279 | int create_flush_cmd_control(struct f2fs_sb_info *); |
1280 | void destroy_flush_cmd_control(struct f2fs_sb_info *); | |
39a53e0c | 1281 | void invalidate_blocks(struct f2fs_sb_info *, block_t); |
5e443818 | 1282 | void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t); |
39a53e0c | 1283 | void clear_prefree_segments(struct f2fs_sb_info *); |
4b2fecc8 | 1284 | void release_discard_addrs(struct f2fs_sb_info *); |
cf2271e7 | 1285 | void discard_next_dnode(struct f2fs_sb_info *, block_t); |
39a53e0c JK |
1286 | int npages_for_summary_flush(struct f2fs_sb_info *); |
1287 | void allocate_new_segments(struct f2fs_sb_info *); | |
4b2fecc8 | 1288 | int f2fs_trim_fs(struct f2fs_sb_info *, struct fstrim_range *); |
39a53e0c | 1289 | struct page *get_sum_page(struct f2fs_sb_info *, unsigned int); |
577e3495 | 1290 | void write_meta_page(struct f2fs_sb_info *, struct page *); |
fb5566da JK |
1291 | void write_node_page(struct f2fs_sb_info *, struct page *, |
1292 | struct f2fs_io_info *, unsigned int, block_t, block_t *); | |
458e6197 JK |
1293 | void write_data_page(struct page *, struct dnode_of_data *, block_t *, |
1294 | struct f2fs_io_info *); | |
1295 | void rewrite_data_page(struct page *, block_t, struct f2fs_io_info *); | |
39a53e0c JK |
1296 | void recover_data_page(struct f2fs_sb_info *, struct page *, |
1297 | struct f2fs_summary *, block_t, block_t); | |
bfad7c2d JK |
1298 | void allocate_data_block(struct f2fs_sb_info *, struct page *, |
1299 | block_t, block_t *, struct f2fs_summary *, int); | |
5514f0aa | 1300 | void f2fs_wait_on_page_writeback(struct page *, enum page_type); |
39a53e0c JK |
1301 | void write_data_summaries(struct f2fs_sb_info *, block_t); |
1302 | void write_node_summaries(struct f2fs_sb_info *, block_t); | |
1303 | int lookup_journal_in_cursum(struct f2fs_summary_block *, | |
1304 | int, unsigned int, int); | |
4b2fecc8 | 1305 | void flush_sit_entries(struct f2fs_sb_info *, struct cp_control *); |
39a53e0c | 1306 | int build_segment_manager(struct f2fs_sb_info *); |
39a53e0c | 1307 | void destroy_segment_manager(struct f2fs_sb_info *); |
7fd9e544 JK |
1308 | int __init create_segment_manager_caches(void); |
1309 | void destroy_segment_manager_caches(void); | |
39a53e0c JK |
1310 | |
1311 | /* | |
1312 | * checkpoint.c | |
1313 | */ | |
1314 | struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t); | |
1315 | struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t); | |
4c521f49 JK |
1316 | struct page *get_meta_page_ra(struct f2fs_sb_info *, pgoff_t); |
1317 | int ra_meta_pages(struct f2fs_sb_info *, block_t, int, int); | |
39a53e0c | 1318 | long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long); |
fff04f90 JK |
1319 | void add_dirty_inode(struct f2fs_sb_info *, nid_t, int type); |
1320 | void remove_dirty_inode(struct f2fs_sb_info *, nid_t, int type); | |
6f12ac25 | 1321 | void release_dirty_inode(struct f2fs_sb_info *); |
fff04f90 | 1322 | bool exist_written_data(struct f2fs_sb_info *, nid_t, int); |
cbd56e7d JK |
1323 | int acquire_orphan_inode(struct f2fs_sb_info *); |
1324 | void release_orphan_inode(struct f2fs_sb_info *); | |
39a53e0c JK |
1325 | void add_orphan_inode(struct f2fs_sb_info *, nid_t); |
1326 | void remove_orphan_inode(struct f2fs_sb_info *, nid_t); | |
8f99a946 | 1327 | void recover_orphan_inodes(struct f2fs_sb_info *); |
39a53e0c | 1328 | int get_valid_checkpoint(struct f2fs_sb_info *); |
a7ffdbe2 | 1329 | void update_dirty_page(struct inode *, struct page *); |
5deb8267 | 1330 | void add_dirty_dir_inode(struct inode *); |
39a53e0c JK |
1331 | void remove_dirty_dir_inode(struct inode *); |
1332 | void sync_dirty_dir_inodes(struct f2fs_sb_info *); | |
75ab4cb8 | 1333 | void write_checkpoint(struct f2fs_sb_info *, struct cp_control *); |
6451e041 | 1334 | void init_ino_entry_info(struct f2fs_sb_info *); |
6e6093a8 | 1335 | int __init create_checkpoint_caches(void); |
39a53e0c JK |
1336 | void destroy_checkpoint_caches(void); |
1337 | ||
1338 | /* | |
1339 | * data.c | |
1340 | */ | |
458e6197 | 1341 | void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int); |
93dfe2ac JK |
1342 | int f2fs_submit_page_bio(struct f2fs_sb_info *, struct page *, block_t, int); |
1343 | void f2fs_submit_page_mbio(struct f2fs_sb_info *, struct page *, block_t, | |
458e6197 | 1344 | struct f2fs_io_info *); |
39a53e0c | 1345 | int reserve_new_block(struct dnode_of_data *); |
b600965c | 1346 | int f2fs_reserve_block(struct dnode_of_data *, pgoff_t); |
39a53e0c | 1347 | void update_extent_cache(block_t, struct dnode_of_data *); |
c718379b | 1348 | struct page *find_data_page(struct inode *, pgoff_t, bool); |
39a53e0c | 1349 | struct page *get_lock_data_page(struct inode *, pgoff_t); |
64aa7ed9 | 1350 | struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool); |
458e6197 | 1351 | int do_write_data_page(struct page *, struct f2fs_io_info *); |
9ab70134 | 1352 | int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64); |
39a53e0c JK |
1353 | |
1354 | /* | |
1355 | * gc.c | |
1356 | */ | |
1357 | int start_gc_thread(struct f2fs_sb_info *); | |
1358 | void stop_gc_thread(struct f2fs_sb_info *); | |
de93653f | 1359 | block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *); |
408e9375 | 1360 | int f2fs_gc(struct f2fs_sb_info *); |
39a53e0c | 1361 | void build_gc_manager(struct f2fs_sb_info *); |
6e6093a8 | 1362 | int __init create_gc_caches(void); |
39a53e0c JK |
1363 | void destroy_gc_caches(void); |
1364 | ||
1365 | /* | |
1366 | * recovery.c | |
1367 | */ | |
6ead1142 | 1368 | int recover_fsync_data(struct f2fs_sb_info *); |
39a53e0c JK |
1369 | bool space_for_roll_forward(struct f2fs_sb_info *); |
1370 | ||
1371 | /* | |
1372 | * debug.c | |
1373 | */ | |
1374 | #ifdef CONFIG_F2FS_STAT_FS | |
1375 | struct f2fs_stat_info { | |
1376 | struct list_head stat_list; | |
1377 | struct f2fs_sb_info *sbi; | |
39a53e0c JK |
1378 | int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs; |
1379 | int main_area_segs, main_area_sections, main_area_zones; | |
1380 | int hit_ext, total_ext; | |
1381 | int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta; | |
1382 | int nats, sits, fnids; | |
1383 | int total_count, utilization; | |
0dbdc2ae | 1384 | int bg_gc, inline_inode; |
39a53e0c JK |
1385 | unsigned int valid_count, valid_node_count, valid_inode_count; |
1386 | unsigned int bimodal, avg_vblocks; | |
1387 | int util_free, util_valid, util_invalid; | |
1388 | int rsvd_segs, overp_segs; | |
1389 | int dirty_count, node_pages, meta_pages; | |
942e0be6 | 1390 | int prefree_count, call_count, cp_count; |
39a53e0c JK |
1391 | int tot_segs, node_segs, data_segs, free_segs, free_secs; |
1392 | int tot_blks, data_blks, node_blks; | |
1393 | int curseg[NR_CURSEG_TYPE]; | |
1394 | int cursec[NR_CURSEG_TYPE]; | |
1395 | int curzone[NR_CURSEG_TYPE]; | |
1396 | ||
1397 | unsigned int segment_count[2]; | |
1398 | unsigned int block_count[2]; | |
1399 | unsigned base_mem, cache_mem; | |
1400 | }; | |
1401 | ||
963d4f7d GZ |
1402 | static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi) |
1403 | { | |
6c311ec6 | 1404 | return (struct f2fs_stat_info *)sbi->stat_info; |
963d4f7d GZ |
1405 | } |
1406 | ||
942e0be6 | 1407 | #define stat_inc_cp_count(si) ((si)->cp_count++) |
dcdfff65 JK |
1408 | #define stat_inc_call_count(si) ((si)->call_count++) |
1409 | #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++) | |
1410 | #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++) | |
1411 | #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--) | |
1412 | #define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++) | |
1413 | #define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++) | |
0dbdc2ae JK |
1414 | #define stat_inc_inline_inode(inode) \ |
1415 | do { \ | |
1416 | if (f2fs_has_inline_data(inode)) \ | |
4081363f | 1417 | ((F2FS_I_SB(inode))->inline_inode++); \ |
0dbdc2ae JK |
1418 | } while (0) |
1419 | #define stat_dec_inline_inode(inode) \ | |
1420 | do { \ | |
1421 | if (f2fs_has_inline_data(inode)) \ | |
4081363f | 1422 | ((F2FS_I_SB(inode))->inline_inode--); \ |
0dbdc2ae JK |
1423 | } while (0) |
1424 | ||
dcdfff65 JK |
1425 | #define stat_inc_seg_type(sbi, curseg) \ |
1426 | ((sbi)->segment_count[(curseg)->alloc_type]++) | |
1427 | #define stat_inc_block_count(sbi, curseg) \ | |
1428 | ((sbi)->block_count[(curseg)->alloc_type]++) | |
39a53e0c JK |
1429 | |
1430 | #define stat_inc_seg_count(sbi, type) \ | |
1431 | do { \ | |
963d4f7d | 1432 | struct f2fs_stat_info *si = F2FS_STAT(sbi); \ |
39a53e0c JK |
1433 | (si)->tot_segs++; \ |
1434 | if (type == SUM_TYPE_DATA) \ | |
1435 | si->data_segs++; \ | |
1436 | else \ | |
1437 | si->node_segs++; \ | |
1438 | } while (0) | |
1439 | ||
1440 | #define stat_inc_tot_blk_count(si, blks) \ | |
1441 | (si->tot_blks += (blks)) | |
1442 | ||
1443 | #define stat_inc_data_blk_count(sbi, blks) \ | |
1444 | do { \ | |
963d4f7d | 1445 | struct f2fs_stat_info *si = F2FS_STAT(sbi); \ |
39a53e0c JK |
1446 | stat_inc_tot_blk_count(si, blks); \ |
1447 | si->data_blks += (blks); \ | |
1448 | } while (0) | |
1449 | ||
1450 | #define stat_inc_node_blk_count(sbi, blks) \ | |
1451 | do { \ | |
963d4f7d | 1452 | struct f2fs_stat_info *si = F2FS_STAT(sbi); \ |
39a53e0c JK |
1453 | stat_inc_tot_blk_count(si, blks); \ |
1454 | si->node_blks += (blks); \ | |
1455 | } while (0) | |
1456 | ||
1457 | int f2fs_build_stats(struct f2fs_sb_info *); | |
1458 | void f2fs_destroy_stats(struct f2fs_sb_info *); | |
6e6093a8 | 1459 | void __init f2fs_create_root_stats(void); |
4589d25d | 1460 | void f2fs_destroy_root_stats(void); |
39a53e0c | 1461 | #else |
942e0be6 | 1462 | #define stat_inc_cp_count(si) |
39a53e0c | 1463 | #define stat_inc_call_count(si) |
dcdfff65 JK |
1464 | #define stat_inc_bggc_count(si) |
1465 | #define stat_inc_dirty_dir(sbi) | |
1466 | #define stat_dec_dirty_dir(sbi) | |
1467 | #define stat_inc_total_hit(sb) | |
1468 | #define stat_inc_read_hit(sb) | |
0dbdc2ae JK |
1469 | #define stat_inc_inline_inode(inode) |
1470 | #define stat_dec_inline_inode(inode) | |
dcdfff65 JK |
1471 | #define stat_inc_seg_type(sbi, curseg) |
1472 | #define stat_inc_block_count(sbi, curseg) | |
39a53e0c JK |
1473 | #define stat_inc_seg_count(si, type) |
1474 | #define stat_inc_tot_blk_count(si, blks) | |
1475 | #define stat_inc_data_blk_count(si, blks) | |
1476 | #define stat_inc_node_blk_count(sbi, blks) | |
1477 | ||
1478 | static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; } | |
1479 | static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { } | |
6e6093a8 | 1480 | static inline void __init f2fs_create_root_stats(void) { } |
4589d25d | 1481 | static inline void f2fs_destroy_root_stats(void) { } |
39a53e0c JK |
1482 | #endif |
1483 | ||
1484 | extern const struct file_operations f2fs_dir_operations; | |
1485 | extern const struct file_operations f2fs_file_operations; | |
1486 | extern const struct inode_operations f2fs_file_inode_operations; | |
1487 | extern const struct address_space_operations f2fs_dblock_aops; | |
1488 | extern const struct address_space_operations f2fs_node_aops; | |
1489 | extern const struct address_space_operations f2fs_meta_aops; | |
1490 | extern const struct inode_operations f2fs_dir_inode_operations; | |
1491 | extern const struct inode_operations f2fs_symlink_inode_operations; | |
1492 | extern const struct inode_operations f2fs_special_inode_operations; | |
1001b347 | 1493 | |
e18c65b2 HL |
1494 | /* |
1495 | * inline.c | |
1496 | */ | |
e18c65b2 HL |
1497 | bool f2fs_may_inline(struct inode *); |
1498 | int f2fs_read_inline_data(struct inode *, struct page *); | |
b067ba1f | 1499 | int f2fs_convert_inline_data(struct inode *, pgoff_t, struct page *); |
e18c65b2 | 1500 | int f2fs_write_inline_data(struct inode *, struct page *, unsigned int); |
8aa6f1c5 | 1501 | void truncate_inline_data(struct inode *, u64); |
0342fd30 | 1502 | bool recover_inline_data(struct inode *, struct page *); |
39a53e0c | 1503 | #endif |