Commit | Line | Data |
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0a8165d7 | 1 | /* |
39a53e0c JK |
2 | * fs/f2fs/f2fs.h |
3 | * | |
4 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. | |
5 | * http://www.samsung.com/ | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | #ifndef _LINUX_F2FS_H | |
12 | #define _LINUX_F2FS_H | |
13 | ||
14 | #include <linux/types.h> | |
15 | #include <linux/page-flags.h> | |
16 | #include <linux/buffer_head.h> | |
39a53e0c JK |
17 | #include <linux/slab.h> |
18 | #include <linux/crc32.h> | |
19 | #include <linux/magic.h> | |
c2d715d1 | 20 | #include <linux/kobject.h> |
7bd59381 | 21 | #include <linux/sched.h> |
39a53e0c | 22 | |
5d56b671 JK |
23 | #ifdef CONFIG_F2FS_CHECK_FS |
24 | #define f2fs_bug_on(condition) BUG_ON(condition) | |
0daaad97 | 25 | #define f2fs_down_write(x, y) down_write_nest_lock(x, y) |
5d56b671 JK |
26 | #else |
27 | #define f2fs_bug_on(condition) | |
0daaad97 | 28 | #define f2fs_down_write(x, y) down_write(x) |
5d56b671 JK |
29 | #endif |
30 | ||
39a53e0c JK |
31 | /* |
32 | * For mount options | |
33 | */ | |
34 | #define F2FS_MOUNT_BG_GC 0x00000001 | |
35 | #define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002 | |
36 | #define F2FS_MOUNT_DISCARD 0x00000004 | |
37 | #define F2FS_MOUNT_NOHEAP 0x00000008 | |
38 | #define F2FS_MOUNT_XATTR_USER 0x00000010 | |
39 | #define F2FS_MOUNT_POSIX_ACL 0x00000020 | |
40 | #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040 | |
444c580f | 41 | #define F2FS_MOUNT_INLINE_XATTR 0x00000080 |
1001b347 | 42 | #define F2FS_MOUNT_INLINE_DATA 0x00000100 |
39a53e0c JK |
43 | |
44 | #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option) | |
45 | #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option) | |
46 | #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option) | |
47 | ||
48 | #define ver_after(a, b) (typecheck(unsigned long long, a) && \ | |
49 | typecheck(unsigned long long, b) && \ | |
50 | ((long long)((a) - (b)) > 0)) | |
51 | ||
a9841c4d JK |
52 | typedef u32 block_t; /* |
53 | * should not change u32, since it is the on-disk block | |
54 | * address format, __le32. | |
55 | */ | |
39a53e0c JK |
56 | typedef u32 nid_t; |
57 | ||
58 | struct f2fs_mount_info { | |
59 | unsigned int opt; | |
60 | }; | |
61 | ||
7e586fa0 JK |
62 | #define CRCPOLY_LE 0xedb88320 |
63 | ||
64 | static inline __u32 f2fs_crc32(void *buf, size_t len) | |
39a53e0c | 65 | { |
7e586fa0 JK |
66 | unsigned char *p = (unsigned char *)buf; |
67 | __u32 crc = F2FS_SUPER_MAGIC; | |
68 | int i; | |
69 | ||
70 | while (len--) { | |
71 | crc ^= *p++; | |
72 | for (i = 0; i < 8; i++) | |
73 | crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0); | |
74 | } | |
75 | return crc; | |
39a53e0c JK |
76 | } |
77 | ||
7e586fa0 | 78 | static inline bool f2fs_crc_valid(__u32 blk_crc, void *buf, size_t buf_size) |
39a53e0c | 79 | { |
7e586fa0 | 80 | return f2fs_crc32(buf, buf_size) == blk_crc; |
39a53e0c JK |
81 | } |
82 | ||
83 | /* | |
84 | * For checkpoint manager | |
85 | */ | |
86 | enum { | |
87 | NAT_BITMAP, | |
88 | SIT_BITMAP | |
89 | }; | |
90 | ||
662befda | 91 | /* |
81c1a0f1 | 92 | * For CP/NAT/SIT/SSA readahead |
662befda CY |
93 | */ |
94 | enum { | |
95 | META_CP, | |
96 | META_NAT, | |
81c1a0f1 CY |
97 | META_SIT, |
98 | META_SSA | |
662befda CY |
99 | }; |
100 | ||
39a53e0c JK |
101 | /* for the list of orphan inodes */ |
102 | struct orphan_inode_entry { | |
103 | struct list_head list; /* list head */ | |
104 | nid_t ino; /* inode number */ | |
105 | }; | |
106 | ||
107 | /* for the list of directory inodes */ | |
108 | struct dir_inode_entry { | |
109 | struct list_head list; /* list head */ | |
110 | struct inode *inode; /* vfs inode pointer */ | |
111 | }; | |
112 | ||
7fd9e544 JK |
113 | /* for the list of blockaddresses to be discarded */ |
114 | struct discard_entry { | |
115 | struct list_head list; /* list head */ | |
116 | block_t blkaddr; /* block address to be discarded */ | |
117 | int len; /* # of consecutive blocks of the discard */ | |
118 | }; | |
119 | ||
39a53e0c JK |
120 | /* for the list of fsync inodes, used only during recovery */ |
121 | struct fsync_inode_entry { | |
122 | struct list_head list; /* list head */ | |
123 | struct inode *inode; /* vfs inode pointer */ | |
124 | block_t blkaddr; /* block address locating the last inode */ | |
125 | }; | |
126 | ||
127 | #define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats)) | |
128 | #define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits)) | |
129 | ||
130 | #define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne) | |
131 | #define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid) | |
132 | #define sit_in_journal(sum, i) (sum->sit_j.entries[i].se) | |
133 | #define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno) | |
134 | ||
135 | static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i) | |
136 | { | |
137 | int before = nats_in_cursum(rs); | |
138 | rs->n_nats = cpu_to_le16(before + i); | |
139 | return before; | |
140 | } | |
141 | ||
142 | static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i) | |
143 | { | |
144 | int before = sits_in_cursum(rs); | |
145 | rs->n_sits = cpu_to_le16(before + i); | |
146 | return before; | |
147 | } | |
148 | ||
e9750824 NJ |
149 | /* |
150 | * ioctl commands | |
151 | */ | |
152 | #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS | |
153 | #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS | |
154 | ||
155 | #if defined(__KERNEL__) && defined(CONFIG_COMPAT) | |
156 | /* | |
157 | * ioctl commands in 32 bit emulation | |
158 | */ | |
159 | #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS | |
160 | #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS | |
161 | #endif | |
162 | ||
39a53e0c JK |
163 | /* |
164 | * For INODE and NODE manager | |
165 | */ | |
dbe6a5ff JK |
166 | /* |
167 | * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1 | |
168 | * as its node offset to distinguish from index node blocks. | |
169 | * But some bits are used to mark the node block. | |
170 | */ | |
171 | #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \ | |
172 | >> OFFSET_BIT_SHIFT) | |
266e97a8 JK |
173 | enum { |
174 | ALLOC_NODE, /* allocate a new node page if needed */ | |
175 | LOOKUP_NODE, /* look up a node without readahead */ | |
176 | LOOKUP_NODE_RA, /* | |
177 | * look up a node with readahead called | |
4f4124d0 | 178 | * by get_data_block. |
39a53e0c | 179 | */ |
266e97a8 JK |
180 | }; |
181 | ||
39a53e0c JK |
182 | #define F2FS_LINK_MAX 32000 /* maximum link count per file */ |
183 | ||
184 | /* for in-memory extent cache entry */ | |
c11abd1a JK |
185 | #define F2FS_MIN_EXTENT_LEN 16 /* minimum extent length */ |
186 | ||
39a53e0c JK |
187 | struct extent_info { |
188 | rwlock_t ext_lock; /* rwlock for consistency */ | |
189 | unsigned int fofs; /* start offset in a file */ | |
190 | u32 blk_addr; /* start block address of the extent */ | |
111d2495 | 191 | unsigned int len; /* length of the extent */ |
39a53e0c JK |
192 | }; |
193 | ||
194 | /* | |
195 | * i_advise uses FADVISE_XXX_BIT. We can add additional hints later. | |
196 | */ | |
197 | #define FADVISE_COLD_BIT 0x01 | |
354a3399 | 198 | #define FADVISE_LOST_PINO_BIT 0x02 |
39a53e0c | 199 | |
ab9fa662 JK |
200 | #define DEF_DIR_LEVEL 0 |
201 | ||
39a53e0c JK |
202 | struct f2fs_inode_info { |
203 | struct inode vfs_inode; /* serve a vfs inode */ | |
204 | unsigned long i_flags; /* keep an inode flags for ioctl */ | |
205 | unsigned char i_advise; /* use to give file attribute hints */ | |
38431545 | 206 | unsigned char i_dir_level; /* use for dentry level for large dir */ |
39a53e0c | 207 | unsigned int i_current_depth; /* use only in directory structure */ |
6666e6aa | 208 | unsigned int i_pino; /* parent inode number */ |
39a53e0c JK |
209 | umode_t i_acl_mode; /* keep file acl mode temporarily */ |
210 | ||
211 | /* Use below internally in f2fs*/ | |
212 | unsigned long flags; /* use to pass per-file flags */ | |
39a53e0c JK |
213 | atomic_t dirty_dents; /* # of dirty dentry pages */ |
214 | f2fs_hash_t chash; /* hash value of given file name */ | |
215 | unsigned int clevel; /* maximum level of given file name */ | |
216 | nid_t i_xattr_nid; /* node id that contains xattrs */ | |
e518ff81 | 217 | unsigned long long xattr_ver; /* cp version of xattr modification */ |
39a53e0c JK |
218 | struct extent_info ext; /* in-memory extent cache entry */ |
219 | }; | |
220 | ||
221 | static inline void get_extent_info(struct extent_info *ext, | |
222 | struct f2fs_extent i_ext) | |
223 | { | |
224 | write_lock(&ext->ext_lock); | |
225 | ext->fofs = le32_to_cpu(i_ext.fofs); | |
226 | ext->blk_addr = le32_to_cpu(i_ext.blk_addr); | |
227 | ext->len = le32_to_cpu(i_ext.len); | |
228 | write_unlock(&ext->ext_lock); | |
229 | } | |
230 | ||
231 | static inline void set_raw_extent(struct extent_info *ext, | |
232 | struct f2fs_extent *i_ext) | |
233 | { | |
234 | read_lock(&ext->ext_lock); | |
235 | i_ext->fofs = cpu_to_le32(ext->fofs); | |
236 | i_ext->blk_addr = cpu_to_le32(ext->blk_addr); | |
237 | i_ext->len = cpu_to_le32(ext->len); | |
238 | read_unlock(&ext->ext_lock); | |
239 | } | |
240 | ||
241 | struct f2fs_nm_info { | |
242 | block_t nat_blkaddr; /* base disk address of NAT */ | |
243 | nid_t max_nid; /* maximum possible node ids */ | |
39a53e0c JK |
244 | nid_t next_scan_nid; /* the next nid to be scanned */ |
245 | ||
246 | /* NAT cache management */ | |
247 | struct radix_tree_root nat_root;/* root of the nat entry cache */ | |
248 | rwlock_t nat_tree_lock; /* protect nat_tree_lock */ | |
249 | unsigned int nat_cnt; /* the # of cached nat entries */ | |
250 | struct list_head nat_entries; /* cached nat entry list (clean) */ | |
251 | struct list_head dirty_nat_entries; /* cached nat entry list (dirty) */ | |
252 | ||
253 | /* free node ids management */ | |
8a7ed66a | 254 | struct radix_tree_root free_nid_root;/* root of the free_nid cache */ |
39a53e0c JK |
255 | struct list_head free_nid_list; /* a list for free nids */ |
256 | spinlock_t free_nid_list_lock; /* protect free nid list */ | |
257 | unsigned int fcnt; /* the number of free node id */ | |
258 | struct mutex build_lock; /* lock for build free nids */ | |
259 | ||
260 | /* for checkpoint */ | |
261 | char *nat_bitmap; /* NAT bitmap pointer */ | |
262 | int bitmap_size; /* bitmap size */ | |
263 | }; | |
264 | ||
265 | /* | |
266 | * this structure is used as one of function parameters. | |
267 | * all the information are dedicated to a given direct node block determined | |
268 | * by the data offset in a file. | |
269 | */ | |
270 | struct dnode_of_data { | |
271 | struct inode *inode; /* vfs inode pointer */ | |
272 | struct page *inode_page; /* its inode page, NULL is possible */ | |
273 | struct page *node_page; /* cached direct node page */ | |
274 | nid_t nid; /* node id of the direct node block */ | |
275 | unsigned int ofs_in_node; /* data offset in the node page */ | |
276 | bool inode_page_locked; /* inode page is locked or not */ | |
277 | block_t data_blkaddr; /* block address of the node block */ | |
278 | }; | |
279 | ||
280 | static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode, | |
281 | struct page *ipage, struct page *npage, nid_t nid) | |
282 | { | |
d66d1f76 | 283 | memset(dn, 0, sizeof(*dn)); |
39a53e0c JK |
284 | dn->inode = inode; |
285 | dn->inode_page = ipage; | |
286 | dn->node_page = npage; | |
287 | dn->nid = nid; | |
39a53e0c JK |
288 | } |
289 | ||
290 | /* | |
291 | * For SIT manager | |
292 | * | |
293 | * By default, there are 6 active log areas across the whole main area. | |
294 | * When considering hot and cold data separation to reduce cleaning overhead, | |
295 | * we split 3 for data logs and 3 for node logs as hot, warm, and cold types, | |
296 | * respectively. | |
297 | * In the current design, you should not change the numbers intentionally. | |
298 | * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6 | |
299 | * logs individually according to the underlying devices. (default: 6) | |
300 | * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for | |
301 | * data and 8 for node logs. | |
302 | */ | |
303 | #define NR_CURSEG_DATA_TYPE (3) | |
304 | #define NR_CURSEG_NODE_TYPE (3) | |
305 | #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE) | |
306 | ||
307 | enum { | |
308 | CURSEG_HOT_DATA = 0, /* directory entry blocks */ | |
309 | CURSEG_WARM_DATA, /* data blocks */ | |
310 | CURSEG_COLD_DATA, /* multimedia or GCed data blocks */ | |
311 | CURSEG_HOT_NODE, /* direct node blocks of directory files */ | |
312 | CURSEG_WARM_NODE, /* direct node blocks of normal files */ | |
313 | CURSEG_COLD_NODE, /* indirect node blocks */ | |
314 | NO_CHECK_TYPE | |
315 | }; | |
316 | ||
317 | struct f2fs_sm_info { | |
318 | struct sit_info *sit_info; /* whole segment information */ | |
319 | struct free_segmap_info *free_info; /* free segment information */ | |
320 | struct dirty_seglist_info *dirty_info; /* dirty segment information */ | |
321 | struct curseg_info *curseg_array; /* active segment information */ | |
322 | ||
323 | struct list_head wblist_head; /* list of under-writeback pages */ | |
324 | spinlock_t wblist_lock; /* lock for checkpoint */ | |
325 | ||
326 | block_t seg0_blkaddr; /* block address of 0'th segment */ | |
327 | block_t main_blkaddr; /* start block address of main area */ | |
328 | block_t ssa_blkaddr; /* start block address of SSA area */ | |
329 | ||
330 | unsigned int segment_count; /* total # of segments */ | |
331 | unsigned int main_segments; /* # of segments in main area */ | |
332 | unsigned int reserved_segments; /* # of reserved segments */ | |
333 | unsigned int ovp_segments; /* # of overprovision segments */ | |
81eb8d6e JK |
334 | |
335 | /* a threshold to reclaim prefree segments */ | |
336 | unsigned int rec_prefree_segments; | |
7fd9e544 JK |
337 | |
338 | /* for small discard management */ | |
339 | struct list_head discard_list; /* 4KB discard list */ | |
340 | int nr_discards; /* # of discards in the list */ | |
341 | int max_discards; /* max. discards to be issued */ | |
216fbd64 JK |
342 | |
343 | unsigned int ipu_policy; /* in-place-update policy */ | |
344 | unsigned int min_ipu_util; /* in-place-update threshold */ | |
39a53e0c JK |
345 | }; |
346 | ||
39a53e0c JK |
347 | /* |
348 | * For superblock | |
349 | */ | |
350 | /* | |
351 | * COUNT_TYPE for monitoring | |
352 | * | |
353 | * f2fs monitors the number of several block types such as on-writeback, | |
354 | * dirty dentry blocks, dirty node blocks, and dirty meta blocks. | |
355 | */ | |
356 | enum count_type { | |
357 | F2FS_WRITEBACK, | |
358 | F2FS_DIRTY_DENTS, | |
359 | F2FS_DIRTY_NODES, | |
360 | F2FS_DIRTY_META, | |
361 | NR_COUNT_TYPE, | |
362 | }; | |
363 | ||
39a53e0c JK |
364 | /* |
365 | * The below are the page types of bios used in submti_bio(). | |
366 | * The available types are: | |
367 | * DATA User data pages. It operates as async mode. | |
368 | * NODE Node pages. It operates as async mode. | |
369 | * META FS metadata pages such as SIT, NAT, CP. | |
370 | * NR_PAGE_TYPE The number of page types. | |
371 | * META_FLUSH Make sure the previous pages are written | |
372 | * with waiting the bio's completion | |
373 | * ... Only can be used with META. | |
374 | */ | |
7d5e5109 | 375 | #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type)) |
39a53e0c JK |
376 | enum page_type { |
377 | DATA, | |
378 | NODE, | |
379 | META, | |
380 | NR_PAGE_TYPE, | |
381 | META_FLUSH, | |
382 | }; | |
383 | ||
458e6197 | 384 | struct f2fs_io_info { |
7e8f2308 GZ |
385 | enum page_type type; /* contains DATA/NODE/META/META_FLUSH */ |
386 | int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */ | |
458e6197 JK |
387 | }; |
388 | ||
93dfe2ac | 389 | #define is_read_io(rw) (((rw) & 1) == READ) |
1ff7bd3b | 390 | struct f2fs_bio_info { |
458e6197 | 391 | struct f2fs_sb_info *sbi; /* f2fs superblock */ |
1ff7bd3b JK |
392 | struct bio *bio; /* bios to merge */ |
393 | sector_t last_block_in_bio; /* last block number */ | |
458e6197 | 394 | struct f2fs_io_info fio; /* store buffered io info. */ |
1ff7bd3b JK |
395 | struct mutex io_mutex; /* mutex for bio */ |
396 | }; | |
397 | ||
39a53e0c JK |
398 | struct f2fs_sb_info { |
399 | struct super_block *sb; /* pointer to VFS super block */ | |
5e176d54 | 400 | struct proc_dir_entry *s_proc; /* proc entry */ |
39a53e0c JK |
401 | struct buffer_head *raw_super_buf; /* buffer head of raw sb */ |
402 | struct f2fs_super_block *raw_super; /* raw super block pointer */ | |
403 | int s_dirty; /* dirty flag for checkpoint */ | |
404 | ||
405 | /* for node-related operations */ | |
406 | struct f2fs_nm_info *nm_info; /* node manager */ | |
407 | struct inode *node_inode; /* cache node blocks */ | |
408 | ||
409 | /* for segment-related operations */ | |
410 | struct f2fs_sm_info *sm_info; /* segment manager */ | |
1ff7bd3b JK |
411 | |
412 | /* for bio operations */ | |
924b720b | 413 | struct f2fs_bio_info read_io; /* for read bios */ |
1ff7bd3b | 414 | struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */ |
1b1f559f | 415 | struct completion *wait_io; /* for completion bios */ |
39a53e0c JK |
416 | |
417 | /* for checkpoint */ | |
418 | struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */ | |
419 | struct inode *meta_inode; /* cache meta blocks */ | |
39936837 | 420 | struct mutex cp_mutex; /* checkpoint procedure lock */ |
e479556b | 421 | struct rw_semaphore cp_rwsem; /* blocking FS operations */ |
39936837 | 422 | struct mutex node_write; /* locking node writes */ |
39a53e0c | 423 | struct mutex writepages; /* mutex for writepages() */ |
aabe5136 | 424 | bool por_doing; /* recovery is doing or not */ |
fb51b5ef | 425 | wait_queue_head_t cp_wait; |
39a53e0c JK |
426 | |
427 | /* for orphan inode management */ | |
428 | struct list_head orphan_inode_list; /* orphan inode list */ | |
17b692f6 | 429 | spinlock_t orphan_inode_lock; /* for orphan inode list */ |
39a53e0c | 430 | unsigned int n_orphans; /* # of orphan inodes */ |
0d47c1ad | 431 | unsigned int max_orphans; /* max orphan inodes */ |
39a53e0c JK |
432 | |
433 | /* for directory inode management */ | |
434 | struct list_head dir_inode_list; /* dir inode list */ | |
435 | spinlock_t dir_inode_lock; /* for dir inode list lock */ | |
39a53e0c JK |
436 | |
437 | /* basic file system units */ | |
438 | unsigned int log_sectors_per_block; /* log2 sectors per block */ | |
439 | unsigned int log_blocksize; /* log2 block size */ | |
440 | unsigned int blocksize; /* block size */ | |
441 | unsigned int root_ino_num; /* root inode number*/ | |
442 | unsigned int node_ino_num; /* node inode number*/ | |
443 | unsigned int meta_ino_num; /* meta inode number*/ | |
444 | unsigned int log_blocks_per_seg; /* log2 blocks per segment */ | |
445 | unsigned int blocks_per_seg; /* blocks per segment */ | |
446 | unsigned int segs_per_sec; /* segments per section */ | |
447 | unsigned int secs_per_zone; /* sections per zone */ | |
448 | unsigned int total_sections; /* total section count */ | |
449 | unsigned int total_node_count; /* total node block count */ | |
450 | unsigned int total_valid_node_count; /* valid node block count */ | |
451 | unsigned int total_valid_inode_count; /* valid inode count */ | |
452 | int active_logs; /* # of active logs */ | |
ab9fa662 | 453 | int dir_level; /* directory level */ |
39a53e0c JK |
454 | |
455 | block_t user_block_count; /* # of user blocks */ | |
456 | block_t total_valid_block_count; /* # of valid blocks */ | |
457 | block_t alloc_valid_block_count; /* # of allocated blocks */ | |
458 | block_t last_valid_block_count; /* for recovery */ | |
459 | u32 s_next_generation; /* for NFS support */ | |
460 | atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */ | |
461 | ||
462 | struct f2fs_mount_info mount_opt; /* mount options */ | |
463 | ||
464 | /* for cleaning operations */ | |
465 | struct mutex gc_mutex; /* mutex for GC */ | |
466 | struct f2fs_gc_kthread *gc_thread; /* GC thread */ | |
5ec4e49f | 467 | unsigned int cur_victim_sec; /* current victim section num */ |
39a53e0c | 468 | |
b1c57c1c JK |
469 | /* maximum # of trials to find a victim segment for SSR and GC */ |
470 | unsigned int max_victim_search; | |
471 | ||
39a53e0c JK |
472 | /* |
473 | * for stat information. | |
474 | * one is for the LFS mode, and the other is for the SSR mode. | |
475 | */ | |
35b09d82 | 476 | #ifdef CONFIG_F2FS_STAT_FS |
39a53e0c JK |
477 | struct f2fs_stat_info *stat_info; /* FS status information */ |
478 | unsigned int segment_count[2]; /* # of allocated segments */ | |
479 | unsigned int block_count[2]; /* # of allocated blocks */ | |
39a53e0c | 480 | int total_hit_ext, read_hit_ext; /* extent cache hit ratio */ |
0dbdc2ae | 481 | int inline_inode; /* # of inline_data inodes */ |
39a53e0c | 482 | int bg_gc; /* background gc calls */ |
35b09d82 NJ |
483 | unsigned int n_dirty_dirs; /* # of dir inodes */ |
484 | #endif | |
485 | unsigned int last_victim[2]; /* last victim segment # */ | |
39a53e0c | 486 | spinlock_t stat_lock; /* lock for stat operations */ |
b59d0bae NJ |
487 | |
488 | /* For sysfs suppport */ | |
489 | struct kobject s_kobj; | |
490 | struct completion s_kobj_unregister; | |
39a53e0c JK |
491 | }; |
492 | ||
493 | /* | |
494 | * Inline functions | |
495 | */ | |
496 | static inline struct f2fs_inode_info *F2FS_I(struct inode *inode) | |
497 | { | |
498 | return container_of(inode, struct f2fs_inode_info, vfs_inode); | |
499 | } | |
500 | ||
501 | static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb) | |
502 | { | |
503 | return sb->s_fs_info; | |
504 | } | |
505 | ||
506 | static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi) | |
507 | { | |
508 | return (struct f2fs_super_block *)(sbi->raw_super); | |
509 | } | |
510 | ||
511 | static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi) | |
512 | { | |
513 | return (struct f2fs_checkpoint *)(sbi->ckpt); | |
514 | } | |
515 | ||
45590710 GZ |
516 | static inline struct f2fs_node *F2FS_NODE(struct page *page) |
517 | { | |
518 | return (struct f2fs_node *)page_address(page); | |
519 | } | |
520 | ||
58bfaf44 JK |
521 | static inline struct f2fs_inode *F2FS_INODE(struct page *page) |
522 | { | |
523 | return &((struct f2fs_node *)page_address(page))->i; | |
524 | } | |
525 | ||
39a53e0c JK |
526 | static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi) |
527 | { | |
528 | return (struct f2fs_nm_info *)(sbi->nm_info); | |
529 | } | |
530 | ||
531 | static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi) | |
532 | { | |
533 | return (struct f2fs_sm_info *)(sbi->sm_info); | |
534 | } | |
535 | ||
536 | static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi) | |
537 | { | |
538 | return (struct sit_info *)(SM_I(sbi)->sit_info); | |
539 | } | |
540 | ||
541 | static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi) | |
542 | { | |
543 | return (struct free_segmap_info *)(SM_I(sbi)->free_info); | |
544 | } | |
545 | ||
546 | static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi) | |
547 | { | |
548 | return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info); | |
549 | } | |
550 | ||
9df27d98 GZ |
551 | static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi) |
552 | { | |
553 | return sbi->meta_inode->i_mapping; | |
554 | } | |
555 | ||
4ef51a8f JK |
556 | static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi) |
557 | { | |
558 | return sbi->node_inode->i_mapping; | |
559 | } | |
560 | ||
39a53e0c JK |
561 | static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info *sbi) |
562 | { | |
563 | sbi->s_dirty = 1; | |
564 | } | |
565 | ||
566 | static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info *sbi) | |
567 | { | |
568 | sbi->s_dirty = 0; | |
569 | } | |
570 | ||
d71b5564 JK |
571 | static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp) |
572 | { | |
573 | return le64_to_cpu(cp->checkpoint_ver); | |
574 | } | |
575 | ||
25ca923b JK |
576 | static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) |
577 | { | |
578 | unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); | |
579 | return ckpt_flags & f; | |
580 | } | |
581 | ||
582 | static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) | |
583 | { | |
584 | unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); | |
585 | ckpt_flags |= f; | |
586 | cp->ckpt_flags = cpu_to_le32(ckpt_flags); | |
587 | } | |
588 | ||
589 | static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) | |
590 | { | |
591 | unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); | |
592 | ckpt_flags &= (~f); | |
593 | cp->ckpt_flags = cpu_to_le32(ckpt_flags); | |
594 | } | |
595 | ||
e479556b | 596 | static inline void f2fs_lock_op(struct f2fs_sb_info *sbi) |
39936837 | 597 | { |
e479556b | 598 | down_read(&sbi->cp_rwsem); |
39936837 JK |
599 | } |
600 | ||
e479556b | 601 | static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi) |
39a53e0c | 602 | { |
e479556b | 603 | up_read(&sbi->cp_rwsem); |
39a53e0c JK |
604 | } |
605 | ||
e479556b | 606 | static inline void f2fs_lock_all(struct f2fs_sb_info *sbi) |
39a53e0c | 607 | { |
0daaad97 | 608 | f2fs_down_write(&sbi->cp_rwsem, &sbi->cp_mutex); |
39936837 JK |
609 | } |
610 | ||
e479556b | 611 | static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi) |
39936837 | 612 | { |
e479556b | 613 | up_write(&sbi->cp_rwsem); |
39a53e0c JK |
614 | } |
615 | ||
616 | /* | |
617 | * Check whether the given nid is within node id range. | |
618 | */ | |
064e0823 | 619 | static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid) |
39a53e0c | 620 | { |
064e0823 | 621 | WARN_ON((nid >= NM_I(sbi)->max_nid)); |
cfb271d4 | 622 | if (unlikely(nid >= NM_I(sbi)->max_nid)) |
064e0823 NJ |
623 | return -EINVAL; |
624 | return 0; | |
39a53e0c JK |
625 | } |
626 | ||
627 | #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1 | |
628 | ||
629 | /* | |
630 | * Check whether the inode has blocks or not | |
631 | */ | |
632 | static inline int F2FS_HAS_BLOCKS(struct inode *inode) | |
633 | { | |
634 | if (F2FS_I(inode)->i_xattr_nid) | |
6c311ec6 | 635 | return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1; |
39a53e0c | 636 | else |
6c311ec6 | 637 | return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS; |
39a53e0c JK |
638 | } |
639 | ||
640 | static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi, | |
641 | struct inode *inode, blkcnt_t count) | |
642 | { | |
643 | block_t valid_block_count; | |
644 | ||
645 | spin_lock(&sbi->stat_lock); | |
646 | valid_block_count = | |
647 | sbi->total_valid_block_count + (block_t)count; | |
cfb271d4 | 648 | if (unlikely(valid_block_count > sbi->user_block_count)) { |
39a53e0c JK |
649 | spin_unlock(&sbi->stat_lock); |
650 | return false; | |
651 | } | |
652 | inode->i_blocks += count; | |
653 | sbi->total_valid_block_count = valid_block_count; | |
654 | sbi->alloc_valid_block_count += (block_t)count; | |
655 | spin_unlock(&sbi->stat_lock); | |
656 | return true; | |
657 | } | |
658 | ||
da19b0dc | 659 | static inline void dec_valid_block_count(struct f2fs_sb_info *sbi, |
39a53e0c JK |
660 | struct inode *inode, |
661 | blkcnt_t count) | |
662 | { | |
663 | spin_lock(&sbi->stat_lock); | |
5d56b671 JK |
664 | f2fs_bug_on(sbi->total_valid_block_count < (block_t) count); |
665 | f2fs_bug_on(inode->i_blocks < count); | |
39a53e0c JK |
666 | inode->i_blocks -= count; |
667 | sbi->total_valid_block_count -= (block_t)count; | |
668 | spin_unlock(&sbi->stat_lock); | |
39a53e0c JK |
669 | } |
670 | ||
671 | static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type) | |
672 | { | |
673 | atomic_inc(&sbi->nr_pages[count_type]); | |
674 | F2FS_SET_SB_DIRT(sbi); | |
675 | } | |
676 | ||
677 | static inline void inode_inc_dirty_dents(struct inode *inode) | |
678 | { | |
1fe54f9d | 679 | inc_page_count(F2FS_SB(inode->i_sb), F2FS_DIRTY_DENTS); |
39a53e0c JK |
680 | atomic_inc(&F2FS_I(inode)->dirty_dents); |
681 | } | |
682 | ||
683 | static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type) | |
684 | { | |
685 | atomic_dec(&sbi->nr_pages[count_type]); | |
686 | } | |
687 | ||
688 | static inline void inode_dec_dirty_dents(struct inode *inode) | |
689 | { | |
1fe54f9d JK |
690 | if (!S_ISDIR(inode->i_mode)) |
691 | return; | |
692 | ||
693 | dec_page_count(F2FS_SB(inode->i_sb), F2FS_DIRTY_DENTS); | |
39a53e0c JK |
694 | atomic_dec(&F2FS_I(inode)->dirty_dents); |
695 | } | |
696 | ||
697 | static inline int get_pages(struct f2fs_sb_info *sbi, int count_type) | |
698 | { | |
699 | return atomic_read(&sbi->nr_pages[count_type]); | |
700 | } | |
701 | ||
5ac206cf NJ |
702 | static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type) |
703 | { | |
704 | unsigned int pages_per_sec = sbi->segs_per_sec * | |
705 | (1 << sbi->log_blocks_per_seg); | |
706 | return ((get_pages(sbi, block_type) + pages_per_sec - 1) | |
707 | >> sbi->log_blocks_per_seg) / sbi->segs_per_sec; | |
708 | } | |
709 | ||
39a53e0c JK |
710 | static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi) |
711 | { | |
8b8343fa | 712 | return sbi->total_valid_block_count; |
39a53e0c JK |
713 | } |
714 | ||
715 | static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag) | |
716 | { | |
717 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
718 | ||
719 | /* return NAT or SIT bitmap */ | |
720 | if (flag == NAT_BITMAP) | |
721 | return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize); | |
722 | else if (flag == SIT_BITMAP) | |
723 | return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize); | |
724 | ||
725 | return 0; | |
726 | } | |
727 | ||
728 | static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag) | |
729 | { | |
730 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
25ca923b JK |
731 | int offset = (flag == NAT_BITMAP) ? |
732 | le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0; | |
39a53e0c JK |
733 | return &ckpt->sit_nat_version_bitmap + offset; |
734 | } | |
735 | ||
736 | static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi) | |
737 | { | |
738 | block_t start_addr; | |
739 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
d71b5564 | 740 | unsigned long long ckpt_version = cur_cp_version(ckpt); |
39a53e0c | 741 | |
25ca923b | 742 | start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr); |
39a53e0c JK |
743 | |
744 | /* | |
745 | * odd numbered checkpoint should at cp segment 0 | |
746 | * and even segent must be at cp segment 1 | |
747 | */ | |
748 | if (!(ckpt_version & 1)) | |
749 | start_addr += sbi->blocks_per_seg; | |
750 | ||
751 | return start_addr; | |
752 | } | |
753 | ||
754 | static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi) | |
755 | { | |
756 | return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum); | |
757 | } | |
758 | ||
759 | static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi, | |
ef86d709 | 760 | struct inode *inode) |
39a53e0c JK |
761 | { |
762 | block_t valid_block_count; | |
763 | unsigned int valid_node_count; | |
764 | ||
765 | spin_lock(&sbi->stat_lock); | |
766 | ||
ef86d709 | 767 | valid_block_count = sbi->total_valid_block_count + 1; |
cfb271d4 | 768 | if (unlikely(valid_block_count > sbi->user_block_count)) { |
39a53e0c JK |
769 | spin_unlock(&sbi->stat_lock); |
770 | return false; | |
771 | } | |
772 | ||
ef86d709 | 773 | valid_node_count = sbi->total_valid_node_count + 1; |
cfb271d4 | 774 | if (unlikely(valid_node_count > sbi->total_node_count)) { |
39a53e0c JK |
775 | spin_unlock(&sbi->stat_lock); |
776 | return false; | |
777 | } | |
778 | ||
779 | if (inode) | |
ef86d709 GZ |
780 | inode->i_blocks++; |
781 | ||
782 | sbi->alloc_valid_block_count++; | |
783 | sbi->total_valid_node_count++; | |
784 | sbi->total_valid_block_count++; | |
39a53e0c JK |
785 | spin_unlock(&sbi->stat_lock); |
786 | ||
787 | return true; | |
788 | } | |
789 | ||
790 | static inline void dec_valid_node_count(struct f2fs_sb_info *sbi, | |
ef86d709 | 791 | struct inode *inode) |
39a53e0c JK |
792 | { |
793 | spin_lock(&sbi->stat_lock); | |
794 | ||
ef86d709 GZ |
795 | f2fs_bug_on(!sbi->total_valid_block_count); |
796 | f2fs_bug_on(!sbi->total_valid_node_count); | |
797 | f2fs_bug_on(!inode->i_blocks); | |
39a53e0c | 798 | |
ef86d709 GZ |
799 | inode->i_blocks--; |
800 | sbi->total_valid_node_count--; | |
801 | sbi->total_valid_block_count--; | |
39a53e0c JK |
802 | |
803 | spin_unlock(&sbi->stat_lock); | |
804 | } | |
805 | ||
806 | static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi) | |
807 | { | |
8b8343fa | 808 | return sbi->total_valid_node_count; |
39a53e0c JK |
809 | } |
810 | ||
811 | static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi) | |
812 | { | |
813 | spin_lock(&sbi->stat_lock); | |
5d56b671 | 814 | f2fs_bug_on(sbi->total_valid_inode_count == sbi->total_node_count); |
39a53e0c JK |
815 | sbi->total_valid_inode_count++; |
816 | spin_unlock(&sbi->stat_lock); | |
817 | } | |
818 | ||
0e80220a | 819 | static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi) |
39a53e0c JK |
820 | { |
821 | spin_lock(&sbi->stat_lock); | |
5d56b671 | 822 | f2fs_bug_on(!sbi->total_valid_inode_count); |
39a53e0c JK |
823 | sbi->total_valid_inode_count--; |
824 | spin_unlock(&sbi->stat_lock); | |
39a53e0c JK |
825 | } |
826 | ||
827 | static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi) | |
828 | { | |
8b8343fa | 829 | return sbi->total_valid_inode_count; |
39a53e0c JK |
830 | } |
831 | ||
832 | static inline void f2fs_put_page(struct page *page, int unlock) | |
833 | { | |
031fa8cc | 834 | if (!page) |
39a53e0c JK |
835 | return; |
836 | ||
837 | if (unlock) { | |
5d56b671 | 838 | f2fs_bug_on(!PageLocked(page)); |
39a53e0c JK |
839 | unlock_page(page); |
840 | } | |
841 | page_cache_release(page); | |
842 | } | |
843 | ||
844 | static inline void f2fs_put_dnode(struct dnode_of_data *dn) | |
845 | { | |
846 | if (dn->node_page) | |
847 | f2fs_put_page(dn->node_page, 1); | |
848 | if (dn->inode_page && dn->node_page != dn->inode_page) | |
849 | f2fs_put_page(dn->inode_page, 0); | |
850 | dn->node_page = NULL; | |
851 | dn->inode_page = NULL; | |
852 | } | |
853 | ||
854 | static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name, | |
e8512d2e | 855 | size_t size) |
39a53e0c | 856 | { |
e8512d2e | 857 | return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL); |
39a53e0c JK |
858 | } |
859 | ||
7bd59381 GZ |
860 | static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep, |
861 | gfp_t flags) | |
862 | { | |
863 | void *entry; | |
864 | retry: | |
865 | entry = kmem_cache_alloc(cachep, flags); | |
866 | if (!entry) { | |
867 | cond_resched(); | |
868 | goto retry; | |
869 | } | |
870 | ||
871 | return entry; | |
872 | } | |
873 | ||
39a53e0c JK |
874 | #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino) |
875 | ||
876 | static inline bool IS_INODE(struct page *page) | |
877 | { | |
45590710 | 878 | struct f2fs_node *p = F2FS_NODE(page); |
39a53e0c JK |
879 | return RAW_IS_INODE(p); |
880 | } | |
881 | ||
882 | static inline __le32 *blkaddr_in_node(struct f2fs_node *node) | |
883 | { | |
884 | return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr; | |
885 | } | |
886 | ||
887 | static inline block_t datablock_addr(struct page *node_page, | |
888 | unsigned int offset) | |
889 | { | |
890 | struct f2fs_node *raw_node; | |
891 | __le32 *addr_array; | |
45590710 | 892 | raw_node = F2FS_NODE(node_page); |
39a53e0c JK |
893 | addr_array = blkaddr_in_node(raw_node); |
894 | return le32_to_cpu(addr_array[offset]); | |
895 | } | |
896 | ||
897 | static inline int f2fs_test_bit(unsigned int nr, char *addr) | |
898 | { | |
899 | int mask; | |
900 | ||
901 | addr += (nr >> 3); | |
902 | mask = 1 << (7 - (nr & 0x07)); | |
903 | return mask & *addr; | |
904 | } | |
905 | ||
906 | static inline int f2fs_set_bit(unsigned int nr, char *addr) | |
907 | { | |
908 | int mask; | |
909 | int ret; | |
910 | ||
911 | addr += (nr >> 3); | |
912 | mask = 1 << (7 - (nr & 0x07)); | |
913 | ret = mask & *addr; | |
914 | *addr |= mask; | |
915 | return ret; | |
916 | } | |
917 | ||
918 | static inline int f2fs_clear_bit(unsigned int nr, char *addr) | |
919 | { | |
920 | int mask; | |
921 | int ret; | |
922 | ||
923 | addr += (nr >> 3); | |
924 | mask = 1 << (7 - (nr & 0x07)); | |
925 | ret = mask & *addr; | |
926 | *addr &= ~mask; | |
927 | return ret; | |
928 | } | |
929 | ||
930 | /* used for f2fs_inode_info->flags */ | |
931 | enum { | |
932 | FI_NEW_INODE, /* indicate newly allocated inode */ | |
b3783873 | 933 | FI_DIRTY_INODE, /* indicate inode is dirty or not */ |
39a53e0c JK |
934 | FI_INC_LINK, /* need to increment i_nlink */ |
935 | FI_ACL_MODE, /* indicate acl mode */ | |
936 | FI_NO_ALLOC, /* should not allocate any blocks */ | |
699489bb | 937 | FI_UPDATE_DIR, /* should update inode block for consistency */ |
74d0b917 | 938 | FI_DELAY_IPUT, /* used for the recovery */ |
c11abd1a | 939 | FI_NO_EXTENT, /* not to use the extent cache */ |
444c580f | 940 | FI_INLINE_XATTR, /* used for inline xattr */ |
1001b347 | 941 | FI_INLINE_DATA, /* used for inline data*/ |
39a53e0c JK |
942 | }; |
943 | ||
944 | static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag) | |
945 | { | |
946 | set_bit(flag, &fi->flags); | |
947 | } | |
948 | ||
949 | static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag) | |
950 | { | |
951 | return test_bit(flag, &fi->flags); | |
952 | } | |
953 | ||
954 | static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag) | |
955 | { | |
956 | clear_bit(flag, &fi->flags); | |
957 | } | |
958 | ||
959 | static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode) | |
960 | { | |
961 | fi->i_acl_mode = mode; | |
962 | set_inode_flag(fi, FI_ACL_MODE); | |
963 | } | |
964 | ||
965 | static inline int cond_clear_inode_flag(struct f2fs_inode_info *fi, int flag) | |
966 | { | |
967 | if (is_inode_flag_set(fi, FI_ACL_MODE)) { | |
968 | clear_inode_flag(fi, FI_ACL_MODE); | |
969 | return 1; | |
970 | } | |
971 | return 0; | |
972 | } | |
973 | ||
444c580f JK |
974 | static inline void get_inline_info(struct f2fs_inode_info *fi, |
975 | struct f2fs_inode *ri) | |
976 | { | |
977 | if (ri->i_inline & F2FS_INLINE_XATTR) | |
978 | set_inode_flag(fi, FI_INLINE_XATTR); | |
1001b347 HL |
979 | if (ri->i_inline & F2FS_INLINE_DATA) |
980 | set_inode_flag(fi, FI_INLINE_DATA); | |
444c580f JK |
981 | } |
982 | ||
983 | static inline void set_raw_inline(struct f2fs_inode_info *fi, | |
984 | struct f2fs_inode *ri) | |
985 | { | |
986 | ri->i_inline = 0; | |
987 | ||
988 | if (is_inode_flag_set(fi, FI_INLINE_XATTR)) | |
989 | ri->i_inline |= F2FS_INLINE_XATTR; | |
1001b347 HL |
990 | if (is_inode_flag_set(fi, FI_INLINE_DATA)) |
991 | ri->i_inline |= F2FS_INLINE_DATA; | |
444c580f JK |
992 | } |
993 | ||
de93653f JK |
994 | static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi) |
995 | { | |
996 | if (is_inode_flag_set(fi, FI_INLINE_XATTR)) | |
997 | return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS; | |
998 | return DEF_ADDRS_PER_INODE; | |
999 | } | |
1000 | ||
65985d93 JK |
1001 | static inline void *inline_xattr_addr(struct page *page) |
1002 | { | |
695fd1ed | 1003 | struct f2fs_inode *ri = F2FS_INODE(page); |
65985d93 JK |
1004 | return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE - |
1005 | F2FS_INLINE_XATTR_ADDRS]); | |
1006 | } | |
1007 | ||
1008 | static inline int inline_xattr_size(struct inode *inode) | |
1009 | { | |
1010 | if (is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR)) | |
1011 | return F2FS_INLINE_XATTR_ADDRS << 2; | |
1012 | else | |
1013 | return 0; | |
1014 | } | |
1015 | ||
0dbdc2ae JK |
1016 | static inline int f2fs_has_inline_data(struct inode *inode) |
1017 | { | |
1018 | return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA); | |
1019 | } | |
1020 | ||
1001b347 HL |
1021 | static inline void *inline_data_addr(struct page *page) |
1022 | { | |
695fd1ed | 1023 | struct f2fs_inode *ri = F2FS_INODE(page); |
1001b347 HL |
1024 | return (void *)&(ri->i_addr[1]); |
1025 | } | |
1026 | ||
77888c1e JK |
1027 | static inline int f2fs_readonly(struct super_block *sb) |
1028 | { | |
1029 | return sb->s_flags & MS_RDONLY; | |
1030 | } | |
1031 | ||
744602cf JK |
1032 | static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi) |
1033 | { | |
1034 | set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG); | |
1035 | sbi->sb->s_flags |= MS_RDONLY; | |
1036 | } | |
1037 | ||
a6dda0e6 CH |
1038 | #define get_inode_mode(i) \ |
1039 | ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \ | |
1040 | (F2FS_I(i)->i_acl_mode) : ((i)->i_mode)) | |
1041 | ||
39a53e0c JK |
1042 | /* |
1043 | * file.c | |
1044 | */ | |
1045 | int f2fs_sync_file(struct file *, loff_t, loff_t, int); | |
1046 | void truncate_data_blocks(struct dnode_of_data *); | |
1e1bb4ba | 1047 | int truncate_blocks(struct inode *, u64); |
39a53e0c | 1048 | void f2fs_truncate(struct inode *); |
2d4d9fb5 | 1049 | int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *); |
39a53e0c JK |
1050 | int f2fs_setattr(struct dentry *, struct iattr *); |
1051 | int truncate_hole(struct inode *, pgoff_t, pgoff_t); | |
b292dcab | 1052 | int truncate_data_blocks_range(struct dnode_of_data *, int); |
39a53e0c | 1053 | long f2fs_ioctl(struct file *, unsigned int, unsigned long); |
e9750824 | 1054 | long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long); |
39a53e0c JK |
1055 | |
1056 | /* | |
1057 | * inode.c | |
1058 | */ | |
1059 | void f2fs_set_inode_flags(struct inode *); | |
39a53e0c | 1060 | struct inode *f2fs_iget(struct super_block *, unsigned long); |
4660f9c0 | 1061 | int try_to_free_nats(struct f2fs_sb_info *, int); |
39a53e0c | 1062 | void update_inode(struct inode *, struct page *); |
744602cf | 1063 | void update_inode_page(struct inode *); |
39a53e0c JK |
1064 | int f2fs_write_inode(struct inode *, struct writeback_control *); |
1065 | void f2fs_evict_inode(struct inode *); | |
1066 | ||
1067 | /* | |
1068 | * namei.c | |
1069 | */ | |
1070 | struct dentry *f2fs_get_parent(struct dentry *child); | |
1071 | ||
1072 | /* | |
1073 | * dir.c | |
1074 | */ | |
1075 | struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *, | |
1076 | struct page **); | |
1077 | struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **); | |
1078 | ino_t f2fs_inode_by_name(struct inode *, struct qstr *); | |
1079 | void f2fs_set_link(struct inode *, struct f2fs_dir_entry *, | |
1080 | struct page *, struct inode *); | |
1cd14caf | 1081 | int update_dent_inode(struct inode *, const struct qstr *); |
b7f7a5e0 | 1082 | int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *); |
39a53e0c JK |
1083 | void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *); |
1084 | int f2fs_make_empty(struct inode *, struct inode *); | |
1085 | bool f2fs_empty_dir(struct inode *); | |
1086 | ||
b7f7a5e0 AV |
1087 | static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode) |
1088 | { | |
1089 | return __f2fs_add_link(dentry->d_parent->d_inode, &dentry->d_name, | |
1090 | inode); | |
1091 | } | |
1092 | ||
39a53e0c JK |
1093 | /* |
1094 | * super.c | |
1095 | */ | |
1096 | int f2fs_sync_fs(struct super_block *, int); | |
a07ef784 NJ |
1097 | extern __printf(3, 4) |
1098 | void f2fs_msg(struct super_block *, const char *, const char *, ...); | |
39a53e0c JK |
1099 | |
1100 | /* | |
1101 | * hash.c | |
1102 | */ | |
9836b8b9 | 1103 | f2fs_hash_t f2fs_dentry_hash(const char *, size_t); |
39a53e0c JK |
1104 | |
1105 | /* | |
1106 | * node.c | |
1107 | */ | |
1108 | struct dnode_of_data; | |
1109 | struct node_info; | |
1110 | ||
1111 | int is_checkpointed_node(struct f2fs_sb_info *, nid_t); | |
1112 | void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *); | |
1113 | int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int); | |
1114 | int truncate_inode_blocks(struct inode *, pgoff_t); | |
4f16fb0f | 1115 | int truncate_xattr_node(struct inode *, struct page *); |
cfe58f9d | 1116 | int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t); |
58e674d6 | 1117 | void remove_inode_page(struct inode *); |
44a83ff6 | 1118 | struct page *new_inode_page(struct inode *, const struct qstr *); |
8ae8f162 | 1119 | struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *); |
39a53e0c JK |
1120 | void ra_node_page(struct f2fs_sb_info *, nid_t); |
1121 | struct page *get_node_page(struct f2fs_sb_info *, pgoff_t); | |
1122 | struct page *get_node_page_ra(struct page *, int); | |
1123 | void sync_inode_page(struct dnode_of_data *); | |
1124 | int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *); | |
1125 | bool alloc_nid(struct f2fs_sb_info *, nid_t *); | |
1126 | void alloc_nid_done(struct f2fs_sb_info *, nid_t); | |
1127 | void alloc_nid_failed(struct f2fs_sb_info *, nid_t); | |
1128 | void recover_node_page(struct f2fs_sb_info *, struct page *, | |
1129 | struct f2fs_summary *, struct node_info *, block_t); | |
abb2366c | 1130 | bool recover_xattr_data(struct inode *, struct page *, block_t); |
39a53e0c JK |
1131 | int recover_inode_page(struct f2fs_sb_info *, struct page *); |
1132 | int restore_node_summary(struct f2fs_sb_info *, unsigned int, | |
1133 | struct f2fs_summary_block *); | |
1134 | void flush_nat_entries(struct f2fs_sb_info *); | |
1135 | int build_node_manager(struct f2fs_sb_info *); | |
1136 | void destroy_node_manager(struct f2fs_sb_info *); | |
6e6093a8 | 1137 | int __init create_node_manager_caches(void); |
39a53e0c JK |
1138 | void destroy_node_manager_caches(void); |
1139 | ||
1140 | /* | |
1141 | * segment.c | |
1142 | */ | |
1143 | void f2fs_balance_fs(struct f2fs_sb_info *); | |
4660f9c0 | 1144 | void f2fs_balance_fs_bg(struct f2fs_sb_info *); |
39a53e0c | 1145 | void invalidate_blocks(struct f2fs_sb_info *, block_t); |
5e443818 | 1146 | void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t); |
39a53e0c JK |
1147 | void clear_prefree_segments(struct f2fs_sb_info *); |
1148 | int npages_for_summary_flush(struct f2fs_sb_info *); | |
1149 | void allocate_new_segments(struct f2fs_sb_info *); | |
1150 | struct page *get_sum_page(struct f2fs_sb_info *, unsigned int); | |
577e3495 | 1151 | void write_meta_page(struct f2fs_sb_info *, struct page *); |
fb5566da JK |
1152 | void write_node_page(struct f2fs_sb_info *, struct page *, |
1153 | struct f2fs_io_info *, unsigned int, block_t, block_t *); | |
458e6197 JK |
1154 | void write_data_page(struct page *, struct dnode_of_data *, block_t *, |
1155 | struct f2fs_io_info *); | |
1156 | void rewrite_data_page(struct page *, block_t, struct f2fs_io_info *); | |
39a53e0c JK |
1157 | void recover_data_page(struct f2fs_sb_info *, struct page *, |
1158 | struct f2fs_summary *, block_t, block_t); | |
1159 | void rewrite_node_page(struct f2fs_sb_info *, struct page *, | |
1160 | struct f2fs_summary *, block_t, block_t); | |
bfad7c2d JK |
1161 | void allocate_data_block(struct f2fs_sb_info *, struct page *, |
1162 | block_t, block_t *, struct f2fs_summary *, int); | |
5514f0aa | 1163 | void f2fs_wait_on_page_writeback(struct page *, enum page_type); |
39a53e0c JK |
1164 | void write_data_summaries(struct f2fs_sb_info *, block_t); |
1165 | void write_node_summaries(struct f2fs_sb_info *, block_t); | |
1166 | int lookup_journal_in_cursum(struct f2fs_summary_block *, | |
1167 | int, unsigned int, int); | |
1168 | void flush_sit_entries(struct f2fs_sb_info *); | |
1169 | int build_segment_manager(struct f2fs_sb_info *); | |
39a53e0c | 1170 | void destroy_segment_manager(struct f2fs_sb_info *); |
7fd9e544 JK |
1171 | int __init create_segment_manager_caches(void); |
1172 | void destroy_segment_manager_caches(void); | |
39a53e0c JK |
1173 | |
1174 | /* | |
1175 | * checkpoint.c | |
1176 | */ | |
1177 | struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t); | |
1178 | struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t); | |
662befda | 1179 | int ra_meta_pages(struct f2fs_sb_info *, int, int, int); |
39a53e0c | 1180 | long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long); |
cbd56e7d JK |
1181 | int acquire_orphan_inode(struct f2fs_sb_info *); |
1182 | void release_orphan_inode(struct f2fs_sb_info *); | |
39a53e0c JK |
1183 | void add_orphan_inode(struct f2fs_sb_info *, nid_t); |
1184 | void remove_orphan_inode(struct f2fs_sb_info *, nid_t); | |
8f99a946 | 1185 | void recover_orphan_inodes(struct f2fs_sb_info *); |
39a53e0c JK |
1186 | int get_valid_checkpoint(struct f2fs_sb_info *); |
1187 | void set_dirty_dir_page(struct inode *, struct page *); | |
5deb8267 | 1188 | void add_dirty_dir_inode(struct inode *); |
39a53e0c | 1189 | void remove_dirty_dir_inode(struct inode *); |
74d0b917 | 1190 | struct inode *check_dirty_dir_inode(struct f2fs_sb_info *, nid_t); |
39a53e0c | 1191 | void sync_dirty_dir_inodes(struct f2fs_sb_info *); |
43727527 | 1192 | void write_checkpoint(struct f2fs_sb_info *, bool); |
39a53e0c | 1193 | void init_orphan_info(struct f2fs_sb_info *); |
6e6093a8 | 1194 | int __init create_checkpoint_caches(void); |
39a53e0c JK |
1195 | void destroy_checkpoint_caches(void); |
1196 | ||
1197 | /* | |
1198 | * data.c | |
1199 | */ | |
458e6197 | 1200 | void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int); |
93dfe2ac JK |
1201 | int f2fs_submit_page_bio(struct f2fs_sb_info *, struct page *, block_t, int); |
1202 | void f2fs_submit_page_mbio(struct f2fs_sb_info *, struct page *, block_t, | |
458e6197 | 1203 | struct f2fs_io_info *); |
39a53e0c | 1204 | int reserve_new_block(struct dnode_of_data *); |
b600965c | 1205 | int f2fs_reserve_block(struct dnode_of_data *, pgoff_t); |
39a53e0c | 1206 | void update_extent_cache(block_t, struct dnode_of_data *); |
c718379b | 1207 | struct page *find_data_page(struct inode *, pgoff_t, bool); |
39a53e0c | 1208 | struct page *get_lock_data_page(struct inode *, pgoff_t); |
64aa7ed9 | 1209 | struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool); |
458e6197 | 1210 | int do_write_data_page(struct page *, struct f2fs_io_info *); |
39a53e0c JK |
1211 | |
1212 | /* | |
1213 | * gc.c | |
1214 | */ | |
1215 | int start_gc_thread(struct f2fs_sb_info *); | |
1216 | void stop_gc_thread(struct f2fs_sb_info *); | |
de93653f | 1217 | block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *); |
408e9375 | 1218 | int f2fs_gc(struct f2fs_sb_info *); |
39a53e0c | 1219 | void build_gc_manager(struct f2fs_sb_info *); |
6e6093a8 | 1220 | int __init create_gc_caches(void); |
39a53e0c JK |
1221 | void destroy_gc_caches(void); |
1222 | ||
1223 | /* | |
1224 | * recovery.c | |
1225 | */ | |
6ead1142 | 1226 | int recover_fsync_data(struct f2fs_sb_info *); |
39a53e0c JK |
1227 | bool space_for_roll_forward(struct f2fs_sb_info *); |
1228 | ||
1229 | /* | |
1230 | * debug.c | |
1231 | */ | |
1232 | #ifdef CONFIG_F2FS_STAT_FS | |
1233 | struct f2fs_stat_info { | |
1234 | struct list_head stat_list; | |
1235 | struct f2fs_sb_info *sbi; | |
1236 | struct mutex stat_lock; | |
1237 | int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs; | |
1238 | int main_area_segs, main_area_sections, main_area_zones; | |
1239 | int hit_ext, total_ext; | |
1240 | int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta; | |
1241 | int nats, sits, fnids; | |
1242 | int total_count, utilization; | |
0dbdc2ae | 1243 | int bg_gc, inline_inode; |
39a53e0c JK |
1244 | unsigned int valid_count, valid_node_count, valid_inode_count; |
1245 | unsigned int bimodal, avg_vblocks; | |
1246 | int util_free, util_valid, util_invalid; | |
1247 | int rsvd_segs, overp_segs; | |
1248 | int dirty_count, node_pages, meta_pages; | |
942e0be6 | 1249 | int prefree_count, call_count, cp_count; |
39a53e0c JK |
1250 | int tot_segs, node_segs, data_segs, free_segs, free_secs; |
1251 | int tot_blks, data_blks, node_blks; | |
1252 | int curseg[NR_CURSEG_TYPE]; | |
1253 | int cursec[NR_CURSEG_TYPE]; | |
1254 | int curzone[NR_CURSEG_TYPE]; | |
1255 | ||
1256 | unsigned int segment_count[2]; | |
1257 | unsigned int block_count[2]; | |
1258 | unsigned base_mem, cache_mem; | |
1259 | }; | |
1260 | ||
963d4f7d GZ |
1261 | static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi) |
1262 | { | |
6c311ec6 | 1263 | return (struct f2fs_stat_info *)sbi->stat_info; |
963d4f7d GZ |
1264 | } |
1265 | ||
942e0be6 | 1266 | #define stat_inc_cp_count(si) ((si)->cp_count++) |
dcdfff65 JK |
1267 | #define stat_inc_call_count(si) ((si)->call_count++) |
1268 | #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++) | |
1269 | #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++) | |
1270 | #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--) | |
1271 | #define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++) | |
1272 | #define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++) | |
0dbdc2ae JK |
1273 | #define stat_inc_inline_inode(inode) \ |
1274 | do { \ | |
1275 | if (f2fs_has_inline_data(inode)) \ | |
1276 | ((F2FS_SB(inode->i_sb))->inline_inode++); \ | |
1277 | } while (0) | |
1278 | #define stat_dec_inline_inode(inode) \ | |
1279 | do { \ | |
1280 | if (f2fs_has_inline_data(inode)) \ | |
1281 | ((F2FS_SB(inode->i_sb))->inline_inode--); \ | |
1282 | } while (0) | |
1283 | ||
dcdfff65 JK |
1284 | #define stat_inc_seg_type(sbi, curseg) \ |
1285 | ((sbi)->segment_count[(curseg)->alloc_type]++) | |
1286 | #define stat_inc_block_count(sbi, curseg) \ | |
1287 | ((sbi)->block_count[(curseg)->alloc_type]++) | |
39a53e0c JK |
1288 | |
1289 | #define stat_inc_seg_count(sbi, type) \ | |
1290 | do { \ | |
963d4f7d | 1291 | struct f2fs_stat_info *si = F2FS_STAT(sbi); \ |
39a53e0c JK |
1292 | (si)->tot_segs++; \ |
1293 | if (type == SUM_TYPE_DATA) \ | |
1294 | si->data_segs++; \ | |
1295 | else \ | |
1296 | si->node_segs++; \ | |
1297 | } while (0) | |
1298 | ||
1299 | #define stat_inc_tot_blk_count(si, blks) \ | |
1300 | (si->tot_blks += (blks)) | |
1301 | ||
1302 | #define stat_inc_data_blk_count(sbi, blks) \ | |
1303 | do { \ | |
963d4f7d | 1304 | struct f2fs_stat_info *si = F2FS_STAT(sbi); \ |
39a53e0c JK |
1305 | stat_inc_tot_blk_count(si, blks); \ |
1306 | si->data_blks += (blks); \ | |
1307 | } while (0) | |
1308 | ||
1309 | #define stat_inc_node_blk_count(sbi, blks) \ | |
1310 | do { \ | |
963d4f7d | 1311 | struct f2fs_stat_info *si = F2FS_STAT(sbi); \ |
39a53e0c JK |
1312 | stat_inc_tot_blk_count(si, blks); \ |
1313 | si->node_blks += (blks); \ | |
1314 | } while (0) | |
1315 | ||
1316 | int f2fs_build_stats(struct f2fs_sb_info *); | |
1317 | void f2fs_destroy_stats(struct f2fs_sb_info *); | |
6e6093a8 | 1318 | void __init f2fs_create_root_stats(void); |
4589d25d | 1319 | void f2fs_destroy_root_stats(void); |
39a53e0c | 1320 | #else |
942e0be6 | 1321 | #define stat_inc_cp_count(si) |
39a53e0c | 1322 | #define stat_inc_call_count(si) |
dcdfff65 JK |
1323 | #define stat_inc_bggc_count(si) |
1324 | #define stat_inc_dirty_dir(sbi) | |
1325 | #define stat_dec_dirty_dir(sbi) | |
1326 | #define stat_inc_total_hit(sb) | |
1327 | #define stat_inc_read_hit(sb) | |
0dbdc2ae JK |
1328 | #define stat_inc_inline_inode(inode) |
1329 | #define stat_dec_inline_inode(inode) | |
dcdfff65 JK |
1330 | #define stat_inc_seg_type(sbi, curseg) |
1331 | #define stat_inc_block_count(sbi, curseg) | |
39a53e0c JK |
1332 | #define stat_inc_seg_count(si, type) |
1333 | #define stat_inc_tot_blk_count(si, blks) | |
1334 | #define stat_inc_data_blk_count(si, blks) | |
1335 | #define stat_inc_node_blk_count(sbi, blks) | |
1336 | ||
1337 | static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; } | |
1338 | static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { } | |
6e6093a8 | 1339 | static inline void __init f2fs_create_root_stats(void) { } |
4589d25d | 1340 | static inline void f2fs_destroy_root_stats(void) { } |
39a53e0c JK |
1341 | #endif |
1342 | ||
1343 | extern const struct file_operations f2fs_dir_operations; | |
1344 | extern const struct file_operations f2fs_file_operations; | |
1345 | extern const struct inode_operations f2fs_file_inode_operations; | |
1346 | extern const struct address_space_operations f2fs_dblock_aops; | |
1347 | extern const struct address_space_operations f2fs_node_aops; | |
1348 | extern const struct address_space_operations f2fs_meta_aops; | |
1349 | extern const struct inode_operations f2fs_dir_inode_operations; | |
1350 | extern const struct inode_operations f2fs_symlink_inode_operations; | |
1351 | extern const struct inode_operations f2fs_special_inode_operations; | |
1001b347 | 1352 | |
e18c65b2 HL |
1353 | /* |
1354 | * inline.c | |
1355 | */ | |
e18c65b2 HL |
1356 | bool f2fs_may_inline(struct inode *); |
1357 | int f2fs_read_inline_data(struct inode *, struct page *); | |
9e09fc85 | 1358 | int f2fs_convert_inline_data(struct inode *, pgoff_t); |
e18c65b2 | 1359 | int f2fs_write_inline_data(struct inode *, struct page *, unsigned int); |
1e1bb4ba | 1360 | int recover_inline_data(struct inode *, struct page *); |
39a53e0c | 1361 | #endif |