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