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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) | |
25 | #else | |
26 | #define f2fs_bug_on(condition) | |
27 | #endif | |
28 | ||
39a53e0c JK |
29 | /* |
30 | * For mount options | |
31 | */ | |
32 | #define F2FS_MOUNT_BG_GC 0x00000001 | |
33 | #define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002 | |
34 | #define F2FS_MOUNT_DISCARD 0x00000004 | |
35 | #define F2FS_MOUNT_NOHEAP 0x00000008 | |
36 | #define F2FS_MOUNT_XATTR_USER 0x00000010 | |
37 | #define F2FS_MOUNT_POSIX_ACL 0x00000020 | |
38 | #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040 | |
444c580f | 39 | #define F2FS_MOUNT_INLINE_XATTR 0x00000080 |
39a53e0c JK |
40 | |
41 | #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option) | |
42 | #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option) | |
43 | #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option) | |
44 | ||
45 | #define ver_after(a, b) (typecheck(unsigned long long, a) && \ | |
46 | typecheck(unsigned long long, b) && \ | |
47 | ((long long)((a) - (b)) > 0)) | |
48 | ||
a9841c4d JK |
49 | typedef u32 block_t; /* |
50 | * should not change u32, since it is the on-disk block | |
51 | * address format, __le32. | |
52 | */ | |
39a53e0c JK |
53 | typedef u32 nid_t; |
54 | ||
55 | struct f2fs_mount_info { | |
56 | unsigned int opt; | |
57 | }; | |
58 | ||
7e586fa0 JK |
59 | #define CRCPOLY_LE 0xedb88320 |
60 | ||
61 | static inline __u32 f2fs_crc32(void *buf, size_t len) | |
39a53e0c | 62 | { |
7e586fa0 JK |
63 | unsigned char *p = (unsigned char *)buf; |
64 | __u32 crc = F2FS_SUPER_MAGIC; | |
65 | int i; | |
66 | ||
67 | while (len--) { | |
68 | crc ^= *p++; | |
69 | for (i = 0; i < 8; i++) | |
70 | crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0); | |
71 | } | |
72 | return crc; | |
39a53e0c JK |
73 | } |
74 | ||
7e586fa0 | 75 | static inline bool f2fs_crc_valid(__u32 blk_crc, void *buf, size_t buf_size) |
39a53e0c | 76 | { |
7e586fa0 | 77 | return f2fs_crc32(buf, buf_size) == blk_crc; |
39a53e0c JK |
78 | } |
79 | ||
80 | /* | |
81 | * For checkpoint manager | |
82 | */ | |
83 | enum { | |
84 | NAT_BITMAP, | |
85 | SIT_BITMAP | |
86 | }; | |
87 | ||
88 | /* for the list of orphan inodes */ | |
89 | struct orphan_inode_entry { | |
90 | struct list_head list; /* list head */ | |
91 | nid_t ino; /* inode number */ | |
92 | }; | |
93 | ||
94 | /* for the list of directory inodes */ | |
95 | struct dir_inode_entry { | |
96 | struct list_head list; /* list head */ | |
97 | struct inode *inode; /* vfs inode pointer */ | |
98 | }; | |
99 | ||
7fd9e544 JK |
100 | /* for the list of blockaddresses to be discarded */ |
101 | struct discard_entry { | |
102 | struct list_head list; /* list head */ | |
103 | block_t blkaddr; /* block address to be discarded */ | |
104 | int len; /* # of consecutive blocks of the discard */ | |
105 | }; | |
106 | ||
39a53e0c JK |
107 | /* for the list of fsync inodes, used only during recovery */ |
108 | struct fsync_inode_entry { | |
109 | struct list_head list; /* list head */ | |
110 | struct inode *inode; /* vfs inode pointer */ | |
111 | block_t blkaddr; /* block address locating the last inode */ | |
112 | }; | |
113 | ||
114 | #define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats)) | |
115 | #define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits)) | |
116 | ||
117 | #define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne) | |
118 | #define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid) | |
119 | #define sit_in_journal(sum, i) (sum->sit_j.entries[i].se) | |
120 | #define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno) | |
121 | ||
122 | static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i) | |
123 | { | |
124 | int before = nats_in_cursum(rs); | |
125 | rs->n_nats = cpu_to_le16(before + i); | |
126 | return before; | |
127 | } | |
128 | ||
129 | static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i) | |
130 | { | |
131 | int before = sits_in_cursum(rs); | |
132 | rs->n_sits = cpu_to_le16(before + i); | |
133 | return before; | |
134 | } | |
135 | ||
e9750824 NJ |
136 | /* |
137 | * ioctl commands | |
138 | */ | |
139 | #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS | |
140 | #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS | |
141 | ||
142 | #if defined(__KERNEL__) && defined(CONFIG_COMPAT) | |
143 | /* | |
144 | * ioctl commands in 32 bit emulation | |
145 | */ | |
146 | #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS | |
147 | #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS | |
148 | #endif | |
149 | ||
39a53e0c JK |
150 | /* |
151 | * For INODE and NODE manager | |
152 | */ | |
dbe6a5ff JK |
153 | /* |
154 | * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1 | |
155 | * as its node offset to distinguish from index node blocks. | |
156 | * But some bits are used to mark the node block. | |
157 | */ | |
158 | #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \ | |
159 | >> OFFSET_BIT_SHIFT) | |
266e97a8 JK |
160 | enum { |
161 | ALLOC_NODE, /* allocate a new node page if needed */ | |
162 | LOOKUP_NODE, /* look up a node without readahead */ | |
163 | LOOKUP_NODE_RA, /* | |
164 | * look up a node with readahead called | |
165 | * by get_datablock_ro. | |
39a53e0c | 166 | */ |
266e97a8 JK |
167 | }; |
168 | ||
39a53e0c JK |
169 | #define F2FS_LINK_MAX 32000 /* maximum link count per file */ |
170 | ||
171 | /* for in-memory extent cache entry */ | |
172 | struct extent_info { | |
173 | rwlock_t ext_lock; /* rwlock for consistency */ | |
174 | unsigned int fofs; /* start offset in a file */ | |
175 | u32 blk_addr; /* start block address of the extent */ | |
111d2495 | 176 | unsigned int len; /* length of the extent */ |
39a53e0c JK |
177 | }; |
178 | ||
179 | /* | |
180 | * i_advise uses FADVISE_XXX_BIT. We can add additional hints later. | |
181 | */ | |
182 | #define FADVISE_COLD_BIT 0x01 | |
354a3399 | 183 | #define FADVISE_LOST_PINO_BIT 0x02 |
39a53e0c JK |
184 | |
185 | struct f2fs_inode_info { | |
186 | struct inode vfs_inode; /* serve a vfs inode */ | |
187 | unsigned long i_flags; /* keep an inode flags for ioctl */ | |
188 | unsigned char i_advise; /* use to give file attribute hints */ | |
189 | unsigned int i_current_depth; /* use only in directory structure */ | |
6666e6aa | 190 | unsigned int i_pino; /* parent inode number */ |
39a53e0c JK |
191 | umode_t i_acl_mode; /* keep file acl mode temporarily */ |
192 | ||
193 | /* Use below internally in f2fs*/ | |
194 | unsigned long flags; /* use to pass per-file flags */ | |
39a53e0c JK |
195 | atomic_t dirty_dents; /* # of dirty dentry pages */ |
196 | f2fs_hash_t chash; /* hash value of given file name */ | |
197 | unsigned int clevel; /* maximum level of given file name */ | |
198 | nid_t i_xattr_nid; /* node id that contains xattrs */ | |
e518ff81 | 199 | unsigned long long xattr_ver; /* cp version of xattr modification */ |
39a53e0c JK |
200 | struct extent_info ext; /* in-memory extent cache entry */ |
201 | }; | |
202 | ||
203 | static inline void get_extent_info(struct extent_info *ext, | |
204 | struct f2fs_extent i_ext) | |
205 | { | |
206 | write_lock(&ext->ext_lock); | |
207 | ext->fofs = le32_to_cpu(i_ext.fofs); | |
208 | ext->blk_addr = le32_to_cpu(i_ext.blk_addr); | |
209 | ext->len = le32_to_cpu(i_ext.len); | |
210 | write_unlock(&ext->ext_lock); | |
211 | } | |
212 | ||
213 | static inline void set_raw_extent(struct extent_info *ext, | |
214 | struct f2fs_extent *i_ext) | |
215 | { | |
216 | read_lock(&ext->ext_lock); | |
217 | i_ext->fofs = cpu_to_le32(ext->fofs); | |
218 | i_ext->blk_addr = cpu_to_le32(ext->blk_addr); | |
219 | i_ext->len = cpu_to_le32(ext->len); | |
220 | read_unlock(&ext->ext_lock); | |
221 | } | |
222 | ||
223 | struct f2fs_nm_info { | |
224 | block_t nat_blkaddr; /* base disk address of NAT */ | |
225 | nid_t max_nid; /* maximum possible node ids */ | |
39a53e0c JK |
226 | nid_t next_scan_nid; /* the next nid to be scanned */ |
227 | ||
228 | /* NAT cache management */ | |
229 | struct radix_tree_root nat_root;/* root of the nat entry cache */ | |
230 | rwlock_t nat_tree_lock; /* protect nat_tree_lock */ | |
231 | unsigned int nat_cnt; /* the # of cached nat entries */ | |
232 | struct list_head nat_entries; /* cached nat entry list (clean) */ | |
233 | struct list_head dirty_nat_entries; /* cached nat entry list (dirty) */ | |
234 | ||
235 | /* free node ids management */ | |
236 | struct list_head free_nid_list; /* a list for free nids */ | |
237 | spinlock_t free_nid_list_lock; /* protect free nid list */ | |
238 | unsigned int fcnt; /* the number of free node id */ | |
239 | struct mutex build_lock; /* lock for build free nids */ | |
240 | ||
241 | /* for checkpoint */ | |
242 | char *nat_bitmap; /* NAT bitmap pointer */ | |
243 | int bitmap_size; /* bitmap size */ | |
244 | }; | |
245 | ||
246 | /* | |
247 | * this structure is used as one of function parameters. | |
248 | * all the information are dedicated to a given direct node block determined | |
249 | * by the data offset in a file. | |
250 | */ | |
251 | struct dnode_of_data { | |
252 | struct inode *inode; /* vfs inode pointer */ | |
253 | struct page *inode_page; /* its inode page, NULL is possible */ | |
254 | struct page *node_page; /* cached direct node page */ | |
255 | nid_t nid; /* node id of the direct node block */ | |
256 | unsigned int ofs_in_node; /* data offset in the node page */ | |
257 | bool inode_page_locked; /* inode page is locked or not */ | |
258 | block_t data_blkaddr; /* block address of the node block */ | |
259 | }; | |
260 | ||
261 | static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode, | |
262 | struct page *ipage, struct page *npage, nid_t nid) | |
263 | { | |
d66d1f76 | 264 | memset(dn, 0, sizeof(*dn)); |
39a53e0c JK |
265 | dn->inode = inode; |
266 | dn->inode_page = ipage; | |
267 | dn->node_page = npage; | |
268 | dn->nid = nid; | |
39a53e0c JK |
269 | } |
270 | ||
271 | /* | |
272 | * For SIT manager | |
273 | * | |
274 | * By default, there are 6 active log areas across the whole main area. | |
275 | * When considering hot and cold data separation to reduce cleaning overhead, | |
276 | * we split 3 for data logs and 3 for node logs as hot, warm, and cold types, | |
277 | * respectively. | |
278 | * In the current design, you should not change the numbers intentionally. | |
279 | * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6 | |
280 | * logs individually according to the underlying devices. (default: 6) | |
281 | * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for | |
282 | * data and 8 for node logs. | |
283 | */ | |
284 | #define NR_CURSEG_DATA_TYPE (3) | |
285 | #define NR_CURSEG_NODE_TYPE (3) | |
286 | #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE) | |
287 | ||
288 | enum { | |
289 | CURSEG_HOT_DATA = 0, /* directory entry blocks */ | |
290 | CURSEG_WARM_DATA, /* data blocks */ | |
291 | CURSEG_COLD_DATA, /* multimedia or GCed data blocks */ | |
292 | CURSEG_HOT_NODE, /* direct node blocks of directory files */ | |
293 | CURSEG_WARM_NODE, /* direct node blocks of normal files */ | |
294 | CURSEG_COLD_NODE, /* indirect node blocks */ | |
295 | NO_CHECK_TYPE | |
296 | }; | |
297 | ||
298 | struct f2fs_sm_info { | |
299 | struct sit_info *sit_info; /* whole segment information */ | |
300 | struct free_segmap_info *free_info; /* free segment information */ | |
301 | struct dirty_seglist_info *dirty_info; /* dirty segment information */ | |
302 | struct curseg_info *curseg_array; /* active segment information */ | |
303 | ||
304 | struct list_head wblist_head; /* list of under-writeback pages */ | |
305 | spinlock_t wblist_lock; /* lock for checkpoint */ | |
306 | ||
307 | block_t seg0_blkaddr; /* block address of 0'th segment */ | |
308 | block_t main_blkaddr; /* start block address of main area */ | |
309 | block_t ssa_blkaddr; /* start block address of SSA area */ | |
310 | ||
311 | unsigned int segment_count; /* total # of segments */ | |
312 | unsigned int main_segments; /* # of segments in main area */ | |
313 | unsigned int reserved_segments; /* # of reserved segments */ | |
314 | unsigned int ovp_segments; /* # of overprovision segments */ | |
81eb8d6e JK |
315 | |
316 | /* a threshold to reclaim prefree segments */ | |
317 | unsigned int rec_prefree_segments; | |
7fd9e544 JK |
318 | |
319 | /* for small discard management */ | |
320 | struct list_head discard_list; /* 4KB discard list */ | |
321 | int nr_discards; /* # of discards in the list */ | |
322 | int max_discards; /* max. discards to be issued */ | |
39a53e0c JK |
323 | }; |
324 | ||
39a53e0c JK |
325 | /* |
326 | * For superblock | |
327 | */ | |
328 | /* | |
329 | * COUNT_TYPE for monitoring | |
330 | * | |
331 | * f2fs monitors the number of several block types such as on-writeback, | |
332 | * dirty dentry blocks, dirty node blocks, and dirty meta blocks. | |
333 | */ | |
334 | enum count_type { | |
335 | F2FS_WRITEBACK, | |
336 | F2FS_DIRTY_DENTS, | |
337 | F2FS_DIRTY_NODES, | |
338 | F2FS_DIRTY_META, | |
339 | NR_COUNT_TYPE, | |
340 | }; | |
341 | ||
39a53e0c JK |
342 | /* |
343 | * The below are the page types of bios used in submti_bio(). | |
344 | * The available types are: | |
345 | * DATA User data pages. It operates as async mode. | |
346 | * NODE Node pages. It operates as async mode. | |
347 | * META FS metadata pages such as SIT, NAT, CP. | |
348 | * NR_PAGE_TYPE The number of page types. | |
349 | * META_FLUSH Make sure the previous pages are written | |
350 | * with waiting the bio's completion | |
351 | * ... Only can be used with META. | |
352 | */ | |
353 | enum page_type { | |
354 | DATA, | |
355 | NODE, | |
356 | META, | |
357 | NR_PAGE_TYPE, | |
358 | META_FLUSH, | |
359 | }; | |
360 | ||
361 | struct f2fs_sb_info { | |
362 | struct super_block *sb; /* pointer to VFS super block */ | |
5e176d54 | 363 | struct proc_dir_entry *s_proc; /* proc entry */ |
39a53e0c JK |
364 | struct buffer_head *raw_super_buf; /* buffer head of raw sb */ |
365 | struct f2fs_super_block *raw_super; /* raw super block pointer */ | |
366 | int s_dirty; /* dirty flag for checkpoint */ | |
367 | ||
368 | /* for node-related operations */ | |
369 | struct f2fs_nm_info *nm_info; /* node manager */ | |
370 | struct inode *node_inode; /* cache node blocks */ | |
371 | ||
372 | /* for segment-related operations */ | |
373 | struct f2fs_sm_info *sm_info; /* segment manager */ | |
374 | struct bio *bio[NR_PAGE_TYPE]; /* bios to merge */ | |
375 | sector_t last_block_in_bio[NR_PAGE_TYPE]; /* last block number */ | |
376 | struct rw_semaphore bio_sem; /* IO semaphore */ | |
377 | ||
378 | /* for checkpoint */ | |
379 | struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */ | |
380 | struct inode *meta_inode; /* cache meta blocks */ | |
39936837 | 381 | struct mutex cp_mutex; /* checkpoint procedure lock */ |
e479556b | 382 | struct rw_semaphore cp_rwsem; /* blocking FS operations */ |
39936837 | 383 | struct mutex node_write; /* locking node writes */ |
39a53e0c | 384 | struct mutex writepages; /* mutex for writepages() */ |
aabe5136 HL |
385 | bool por_doing; /* recovery is doing or not */ |
386 | bool on_build_free_nids; /* build_free_nids is doing */ | |
fb51b5ef | 387 | wait_queue_head_t cp_wait; |
39a53e0c JK |
388 | |
389 | /* for orphan inode management */ | |
390 | struct list_head orphan_inode_list; /* orphan inode list */ | |
391 | struct mutex orphan_inode_mutex; /* for orphan inode list */ | |
392 | unsigned int n_orphans; /* # of orphan inodes */ | |
393 | ||
394 | /* for directory inode management */ | |
395 | struct list_head dir_inode_list; /* dir inode list */ | |
396 | spinlock_t dir_inode_lock; /* for dir inode list lock */ | |
39a53e0c JK |
397 | |
398 | /* basic file system units */ | |
399 | unsigned int log_sectors_per_block; /* log2 sectors per block */ | |
400 | unsigned int log_blocksize; /* log2 block size */ | |
401 | unsigned int blocksize; /* block size */ | |
402 | unsigned int root_ino_num; /* root inode number*/ | |
403 | unsigned int node_ino_num; /* node inode number*/ | |
404 | unsigned int meta_ino_num; /* meta inode number*/ | |
405 | unsigned int log_blocks_per_seg; /* log2 blocks per segment */ | |
406 | unsigned int blocks_per_seg; /* blocks per segment */ | |
407 | unsigned int segs_per_sec; /* segments per section */ | |
408 | unsigned int secs_per_zone; /* sections per zone */ | |
409 | unsigned int total_sections; /* total section count */ | |
410 | unsigned int total_node_count; /* total node block count */ | |
411 | unsigned int total_valid_node_count; /* valid node block count */ | |
412 | unsigned int total_valid_inode_count; /* valid inode count */ | |
413 | int active_logs; /* # of active logs */ | |
414 | ||
415 | block_t user_block_count; /* # of user blocks */ | |
416 | block_t total_valid_block_count; /* # of valid blocks */ | |
417 | block_t alloc_valid_block_count; /* # of allocated blocks */ | |
418 | block_t last_valid_block_count; /* for recovery */ | |
419 | u32 s_next_generation; /* for NFS support */ | |
420 | atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */ | |
421 | ||
422 | struct f2fs_mount_info mount_opt; /* mount options */ | |
423 | ||
424 | /* for cleaning operations */ | |
425 | struct mutex gc_mutex; /* mutex for GC */ | |
426 | struct f2fs_gc_kthread *gc_thread; /* GC thread */ | |
5ec4e49f | 427 | unsigned int cur_victim_sec; /* current victim section num */ |
39a53e0c JK |
428 | |
429 | /* | |
430 | * for stat information. | |
431 | * one is for the LFS mode, and the other is for the SSR mode. | |
432 | */ | |
35b09d82 | 433 | #ifdef CONFIG_F2FS_STAT_FS |
39a53e0c JK |
434 | struct f2fs_stat_info *stat_info; /* FS status information */ |
435 | unsigned int segment_count[2]; /* # of allocated segments */ | |
436 | unsigned int block_count[2]; /* # of allocated blocks */ | |
39a53e0c JK |
437 | int total_hit_ext, read_hit_ext; /* extent cache hit ratio */ |
438 | int bg_gc; /* background gc calls */ | |
35b09d82 NJ |
439 | unsigned int n_dirty_dirs; /* # of dir inodes */ |
440 | #endif | |
441 | unsigned int last_victim[2]; /* last victim segment # */ | |
39a53e0c | 442 | spinlock_t stat_lock; /* lock for stat operations */ |
b59d0bae NJ |
443 | |
444 | /* For sysfs suppport */ | |
445 | struct kobject s_kobj; | |
446 | struct completion s_kobj_unregister; | |
39a53e0c JK |
447 | }; |
448 | ||
449 | /* | |
450 | * Inline functions | |
451 | */ | |
452 | static inline struct f2fs_inode_info *F2FS_I(struct inode *inode) | |
453 | { | |
454 | return container_of(inode, struct f2fs_inode_info, vfs_inode); | |
455 | } | |
456 | ||
457 | static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb) | |
458 | { | |
459 | return sb->s_fs_info; | |
460 | } | |
461 | ||
462 | static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi) | |
463 | { | |
464 | return (struct f2fs_super_block *)(sbi->raw_super); | |
465 | } | |
466 | ||
467 | static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi) | |
468 | { | |
469 | return (struct f2fs_checkpoint *)(sbi->ckpt); | |
470 | } | |
471 | ||
45590710 GZ |
472 | static inline struct f2fs_node *F2FS_NODE(struct page *page) |
473 | { | |
474 | return (struct f2fs_node *)page_address(page); | |
475 | } | |
476 | ||
39a53e0c JK |
477 | static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi) |
478 | { | |
479 | return (struct f2fs_nm_info *)(sbi->nm_info); | |
480 | } | |
481 | ||
482 | static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi) | |
483 | { | |
484 | return (struct f2fs_sm_info *)(sbi->sm_info); | |
485 | } | |
486 | ||
487 | static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi) | |
488 | { | |
489 | return (struct sit_info *)(SM_I(sbi)->sit_info); | |
490 | } | |
491 | ||
492 | static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi) | |
493 | { | |
494 | return (struct free_segmap_info *)(SM_I(sbi)->free_info); | |
495 | } | |
496 | ||
497 | static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi) | |
498 | { | |
499 | return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info); | |
500 | } | |
501 | ||
502 | static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info *sbi) | |
503 | { | |
504 | sbi->s_dirty = 1; | |
505 | } | |
506 | ||
507 | static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info *sbi) | |
508 | { | |
509 | sbi->s_dirty = 0; | |
510 | } | |
511 | ||
d71b5564 JK |
512 | static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp) |
513 | { | |
514 | return le64_to_cpu(cp->checkpoint_ver); | |
515 | } | |
516 | ||
25ca923b JK |
517 | static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) |
518 | { | |
519 | unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); | |
520 | return ckpt_flags & f; | |
521 | } | |
522 | ||
523 | static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) | |
524 | { | |
525 | unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); | |
526 | ckpt_flags |= f; | |
527 | cp->ckpt_flags = cpu_to_le32(ckpt_flags); | |
528 | } | |
529 | ||
530 | static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) | |
531 | { | |
532 | unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); | |
533 | ckpt_flags &= (~f); | |
534 | cp->ckpt_flags = cpu_to_le32(ckpt_flags); | |
535 | } | |
536 | ||
e479556b | 537 | static inline void f2fs_lock_op(struct f2fs_sb_info *sbi) |
39936837 | 538 | { |
e479556b | 539 | down_read(&sbi->cp_rwsem); |
39936837 JK |
540 | } |
541 | ||
e479556b | 542 | static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi) |
39a53e0c | 543 | { |
e479556b | 544 | up_read(&sbi->cp_rwsem); |
39a53e0c JK |
545 | } |
546 | ||
e479556b | 547 | static inline void f2fs_lock_all(struct f2fs_sb_info *sbi) |
39a53e0c | 548 | { |
e479556b | 549 | down_write_nest_lock(&sbi->cp_rwsem, &sbi->cp_mutex); |
39936837 JK |
550 | } |
551 | ||
e479556b | 552 | static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi) |
39936837 | 553 | { |
e479556b | 554 | up_write(&sbi->cp_rwsem); |
39a53e0c JK |
555 | } |
556 | ||
557 | /* | |
558 | * Check whether the given nid is within node id range. | |
559 | */ | |
064e0823 | 560 | static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid) |
39a53e0c | 561 | { |
064e0823 NJ |
562 | WARN_ON((nid >= NM_I(sbi)->max_nid)); |
563 | if (nid >= NM_I(sbi)->max_nid) | |
564 | return -EINVAL; | |
565 | return 0; | |
39a53e0c JK |
566 | } |
567 | ||
568 | #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1 | |
569 | ||
570 | /* | |
571 | * Check whether the inode has blocks or not | |
572 | */ | |
573 | static inline int F2FS_HAS_BLOCKS(struct inode *inode) | |
574 | { | |
575 | if (F2FS_I(inode)->i_xattr_nid) | |
576 | return (inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1); | |
577 | else | |
578 | return (inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS); | |
579 | } | |
580 | ||
581 | static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi, | |
582 | struct inode *inode, blkcnt_t count) | |
583 | { | |
584 | block_t valid_block_count; | |
585 | ||
586 | spin_lock(&sbi->stat_lock); | |
587 | valid_block_count = | |
588 | sbi->total_valid_block_count + (block_t)count; | |
589 | if (valid_block_count > sbi->user_block_count) { | |
590 | spin_unlock(&sbi->stat_lock); | |
591 | return false; | |
592 | } | |
593 | inode->i_blocks += count; | |
594 | sbi->total_valid_block_count = valid_block_count; | |
595 | sbi->alloc_valid_block_count += (block_t)count; | |
596 | spin_unlock(&sbi->stat_lock); | |
597 | return true; | |
598 | } | |
599 | ||
600 | static inline int dec_valid_block_count(struct f2fs_sb_info *sbi, | |
601 | struct inode *inode, | |
602 | blkcnt_t count) | |
603 | { | |
604 | spin_lock(&sbi->stat_lock); | |
5d56b671 JK |
605 | f2fs_bug_on(sbi->total_valid_block_count < (block_t) count); |
606 | f2fs_bug_on(inode->i_blocks < count); | |
39a53e0c JK |
607 | inode->i_blocks -= count; |
608 | sbi->total_valid_block_count -= (block_t)count; | |
609 | spin_unlock(&sbi->stat_lock); | |
610 | return 0; | |
611 | } | |
612 | ||
613 | static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type) | |
614 | { | |
615 | atomic_inc(&sbi->nr_pages[count_type]); | |
616 | F2FS_SET_SB_DIRT(sbi); | |
617 | } | |
618 | ||
619 | static inline void inode_inc_dirty_dents(struct inode *inode) | |
620 | { | |
621 | atomic_inc(&F2FS_I(inode)->dirty_dents); | |
622 | } | |
623 | ||
624 | static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type) | |
625 | { | |
626 | atomic_dec(&sbi->nr_pages[count_type]); | |
627 | } | |
628 | ||
629 | static inline void inode_dec_dirty_dents(struct inode *inode) | |
630 | { | |
631 | atomic_dec(&F2FS_I(inode)->dirty_dents); | |
632 | } | |
633 | ||
634 | static inline int get_pages(struct f2fs_sb_info *sbi, int count_type) | |
635 | { | |
636 | return atomic_read(&sbi->nr_pages[count_type]); | |
637 | } | |
638 | ||
5ac206cf NJ |
639 | static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type) |
640 | { | |
641 | unsigned int pages_per_sec = sbi->segs_per_sec * | |
642 | (1 << sbi->log_blocks_per_seg); | |
643 | return ((get_pages(sbi, block_type) + pages_per_sec - 1) | |
644 | >> sbi->log_blocks_per_seg) / sbi->segs_per_sec; | |
645 | } | |
646 | ||
39a53e0c JK |
647 | static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi) |
648 | { | |
649 | block_t ret; | |
650 | spin_lock(&sbi->stat_lock); | |
651 | ret = sbi->total_valid_block_count; | |
652 | spin_unlock(&sbi->stat_lock); | |
653 | return ret; | |
654 | } | |
655 | ||
656 | static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag) | |
657 | { | |
658 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
659 | ||
660 | /* return NAT or SIT bitmap */ | |
661 | if (flag == NAT_BITMAP) | |
662 | return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize); | |
663 | else if (flag == SIT_BITMAP) | |
664 | return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize); | |
665 | ||
666 | return 0; | |
667 | } | |
668 | ||
669 | static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag) | |
670 | { | |
671 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
25ca923b JK |
672 | int offset = (flag == NAT_BITMAP) ? |
673 | le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0; | |
39a53e0c JK |
674 | return &ckpt->sit_nat_version_bitmap + offset; |
675 | } | |
676 | ||
677 | static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi) | |
678 | { | |
679 | block_t start_addr; | |
680 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
d71b5564 | 681 | unsigned long long ckpt_version = cur_cp_version(ckpt); |
39a53e0c | 682 | |
25ca923b | 683 | start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr); |
39a53e0c JK |
684 | |
685 | /* | |
686 | * odd numbered checkpoint should at cp segment 0 | |
687 | * and even segent must be at cp segment 1 | |
688 | */ | |
689 | if (!(ckpt_version & 1)) | |
690 | start_addr += sbi->blocks_per_seg; | |
691 | ||
692 | return start_addr; | |
693 | } | |
694 | ||
695 | static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi) | |
696 | { | |
697 | return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum); | |
698 | } | |
699 | ||
700 | static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi, | |
701 | struct inode *inode, | |
702 | unsigned int count) | |
703 | { | |
704 | block_t valid_block_count; | |
705 | unsigned int valid_node_count; | |
706 | ||
707 | spin_lock(&sbi->stat_lock); | |
708 | ||
709 | valid_block_count = sbi->total_valid_block_count + (block_t)count; | |
710 | sbi->alloc_valid_block_count += (block_t)count; | |
711 | valid_node_count = sbi->total_valid_node_count + count; | |
712 | ||
713 | if (valid_block_count > sbi->user_block_count) { | |
714 | spin_unlock(&sbi->stat_lock); | |
715 | return false; | |
716 | } | |
717 | ||
718 | if (valid_node_count > sbi->total_node_count) { | |
719 | spin_unlock(&sbi->stat_lock); | |
720 | return false; | |
721 | } | |
722 | ||
723 | if (inode) | |
724 | inode->i_blocks += count; | |
725 | sbi->total_valid_node_count = valid_node_count; | |
726 | sbi->total_valid_block_count = valid_block_count; | |
727 | spin_unlock(&sbi->stat_lock); | |
728 | ||
729 | return true; | |
730 | } | |
731 | ||
732 | static inline void dec_valid_node_count(struct f2fs_sb_info *sbi, | |
733 | struct inode *inode, | |
734 | unsigned int count) | |
735 | { | |
736 | spin_lock(&sbi->stat_lock); | |
737 | ||
5d56b671 JK |
738 | f2fs_bug_on(sbi->total_valid_block_count < count); |
739 | f2fs_bug_on(sbi->total_valid_node_count < count); | |
740 | f2fs_bug_on(inode->i_blocks < count); | |
39a53e0c JK |
741 | |
742 | inode->i_blocks -= count; | |
743 | sbi->total_valid_node_count -= count; | |
744 | sbi->total_valid_block_count -= (block_t)count; | |
745 | ||
746 | spin_unlock(&sbi->stat_lock); | |
747 | } | |
748 | ||
749 | static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi) | |
750 | { | |
751 | unsigned int ret; | |
752 | spin_lock(&sbi->stat_lock); | |
753 | ret = sbi->total_valid_node_count; | |
754 | spin_unlock(&sbi->stat_lock); | |
755 | return ret; | |
756 | } | |
757 | ||
758 | static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi) | |
759 | { | |
760 | spin_lock(&sbi->stat_lock); | |
5d56b671 | 761 | f2fs_bug_on(sbi->total_valid_inode_count == sbi->total_node_count); |
39a53e0c JK |
762 | sbi->total_valid_inode_count++; |
763 | spin_unlock(&sbi->stat_lock); | |
764 | } | |
765 | ||
766 | static inline int dec_valid_inode_count(struct f2fs_sb_info *sbi) | |
767 | { | |
768 | spin_lock(&sbi->stat_lock); | |
5d56b671 | 769 | f2fs_bug_on(!sbi->total_valid_inode_count); |
39a53e0c JK |
770 | sbi->total_valid_inode_count--; |
771 | spin_unlock(&sbi->stat_lock); | |
772 | return 0; | |
773 | } | |
774 | ||
775 | static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi) | |
776 | { | |
777 | unsigned int ret; | |
778 | spin_lock(&sbi->stat_lock); | |
779 | ret = sbi->total_valid_inode_count; | |
780 | spin_unlock(&sbi->stat_lock); | |
781 | return ret; | |
782 | } | |
783 | ||
784 | static inline void f2fs_put_page(struct page *page, int unlock) | |
785 | { | |
786 | if (!page || IS_ERR(page)) | |
787 | return; | |
788 | ||
789 | if (unlock) { | |
5d56b671 | 790 | f2fs_bug_on(!PageLocked(page)); |
39a53e0c JK |
791 | unlock_page(page); |
792 | } | |
793 | page_cache_release(page); | |
794 | } | |
795 | ||
796 | static inline void f2fs_put_dnode(struct dnode_of_data *dn) | |
797 | { | |
798 | if (dn->node_page) | |
799 | f2fs_put_page(dn->node_page, 1); | |
800 | if (dn->inode_page && dn->node_page != dn->inode_page) | |
801 | f2fs_put_page(dn->inode_page, 0); | |
802 | dn->node_page = NULL; | |
803 | dn->inode_page = NULL; | |
804 | } | |
805 | ||
806 | static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name, | |
807 | size_t size, void (*ctor)(void *)) | |
808 | { | |
809 | return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, ctor); | |
810 | } | |
811 | ||
7bd59381 GZ |
812 | static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep, |
813 | gfp_t flags) | |
814 | { | |
815 | void *entry; | |
816 | retry: | |
817 | entry = kmem_cache_alloc(cachep, flags); | |
818 | if (!entry) { | |
819 | cond_resched(); | |
820 | goto retry; | |
821 | } | |
822 | ||
823 | return entry; | |
824 | } | |
825 | ||
39a53e0c JK |
826 | #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino) |
827 | ||
828 | static inline bool IS_INODE(struct page *page) | |
829 | { | |
45590710 | 830 | struct f2fs_node *p = F2FS_NODE(page); |
39a53e0c JK |
831 | return RAW_IS_INODE(p); |
832 | } | |
833 | ||
834 | static inline __le32 *blkaddr_in_node(struct f2fs_node *node) | |
835 | { | |
836 | return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr; | |
837 | } | |
838 | ||
839 | static inline block_t datablock_addr(struct page *node_page, | |
840 | unsigned int offset) | |
841 | { | |
842 | struct f2fs_node *raw_node; | |
843 | __le32 *addr_array; | |
45590710 | 844 | raw_node = F2FS_NODE(node_page); |
39a53e0c JK |
845 | addr_array = blkaddr_in_node(raw_node); |
846 | return le32_to_cpu(addr_array[offset]); | |
847 | } | |
848 | ||
849 | static inline int f2fs_test_bit(unsigned int nr, char *addr) | |
850 | { | |
851 | int mask; | |
852 | ||
853 | addr += (nr >> 3); | |
854 | mask = 1 << (7 - (nr & 0x07)); | |
855 | return mask & *addr; | |
856 | } | |
857 | ||
858 | static inline int f2fs_set_bit(unsigned int nr, char *addr) | |
859 | { | |
860 | int mask; | |
861 | int ret; | |
862 | ||
863 | addr += (nr >> 3); | |
864 | mask = 1 << (7 - (nr & 0x07)); | |
865 | ret = mask & *addr; | |
866 | *addr |= mask; | |
867 | return ret; | |
868 | } | |
869 | ||
870 | static inline int f2fs_clear_bit(unsigned int nr, char *addr) | |
871 | { | |
872 | int mask; | |
873 | int ret; | |
874 | ||
875 | addr += (nr >> 3); | |
876 | mask = 1 << (7 - (nr & 0x07)); | |
877 | ret = mask & *addr; | |
878 | *addr &= ~mask; | |
879 | return ret; | |
880 | } | |
881 | ||
882 | /* used for f2fs_inode_info->flags */ | |
883 | enum { | |
884 | FI_NEW_INODE, /* indicate newly allocated inode */ | |
b3783873 | 885 | FI_DIRTY_INODE, /* indicate inode is dirty or not */ |
39a53e0c JK |
886 | FI_INC_LINK, /* need to increment i_nlink */ |
887 | FI_ACL_MODE, /* indicate acl mode */ | |
888 | FI_NO_ALLOC, /* should not allocate any blocks */ | |
699489bb | 889 | FI_UPDATE_DIR, /* should update inode block for consistency */ |
74d0b917 | 890 | FI_DELAY_IPUT, /* used for the recovery */ |
444c580f | 891 | FI_INLINE_XATTR, /* used for inline xattr */ |
39a53e0c JK |
892 | }; |
893 | ||
894 | static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag) | |
895 | { | |
896 | set_bit(flag, &fi->flags); | |
897 | } | |
898 | ||
899 | static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag) | |
900 | { | |
901 | return test_bit(flag, &fi->flags); | |
902 | } | |
903 | ||
904 | static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag) | |
905 | { | |
906 | clear_bit(flag, &fi->flags); | |
907 | } | |
908 | ||
909 | static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode) | |
910 | { | |
911 | fi->i_acl_mode = mode; | |
912 | set_inode_flag(fi, FI_ACL_MODE); | |
913 | } | |
914 | ||
915 | static inline int cond_clear_inode_flag(struct f2fs_inode_info *fi, int flag) | |
916 | { | |
917 | if (is_inode_flag_set(fi, FI_ACL_MODE)) { | |
918 | clear_inode_flag(fi, FI_ACL_MODE); | |
919 | return 1; | |
920 | } | |
921 | return 0; | |
922 | } | |
923 | ||
444c580f JK |
924 | static inline void get_inline_info(struct f2fs_inode_info *fi, |
925 | struct f2fs_inode *ri) | |
926 | { | |
927 | if (ri->i_inline & F2FS_INLINE_XATTR) | |
928 | set_inode_flag(fi, FI_INLINE_XATTR); | |
929 | } | |
930 | ||
931 | static inline void set_raw_inline(struct f2fs_inode_info *fi, | |
932 | struct f2fs_inode *ri) | |
933 | { | |
934 | ri->i_inline = 0; | |
935 | ||
936 | if (is_inode_flag_set(fi, FI_INLINE_XATTR)) | |
937 | ri->i_inline |= F2FS_INLINE_XATTR; | |
938 | } | |
939 | ||
de93653f JK |
940 | static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi) |
941 | { | |
942 | if (is_inode_flag_set(fi, FI_INLINE_XATTR)) | |
943 | return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS; | |
944 | return DEF_ADDRS_PER_INODE; | |
945 | } | |
946 | ||
65985d93 JK |
947 | static inline void *inline_xattr_addr(struct page *page) |
948 | { | |
949 | struct f2fs_inode *ri; | |
950 | ri = (struct f2fs_inode *)page_address(page); | |
951 | return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE - | |
952 | F2FS_INLINE_XATTR_ADDRS]); | |
953 | } | |
954 | ||
955 | static inline int inline_xattr_size(struct inode *inode) | |
956 | { | |
957 | if (is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR)) | |
958 | return F2FS_INLINE_XATTR_ADDRS << 2; | |
959 | else | |
960 | return 0; | |
961 | } | |
962 | ||
77888c1e JK |
963 | static inline int f2fs_readonly(struct super_block *sb) |
964 | { | |
965 | return sb->s_flags & MS_RDONLY; | |
966 | } | |
967 | ||
39a53e0c JK |
968 | /* |
969 | * file.c | |
970 | */ | |
971 | int f2fs_sync_file(struct file *, loff_t, loff_t, int); | |
972 | void truncate_data_blocks(struct dnode_of_data *); | |
973 | void f2fs_truncate(struct inode *); | |
2d4d9fb5 | 974 | int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *); |
39a53e0c JK |
975 | int f2fs_setattr(struct dentry *, struct iattr *); |
976 | int truncate_hole(struct inode *, pgoff_t, pgoff_t); | |
b292dcab | 977 | int truncate_data_blocks_range(struct dnode_of_data *, int); |
39a53e0c | 978 | long f2fs_ioctl(struct file *, unsigned int, unsigned long); |
e9750824 | 979 | long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long); |
39a53e0c JK |
980 | |
981 | /* | |
982 | * inode.c | |
983 | */ | |
984 | void f2fs_set_inode_flags(struct inode *); | |
39a53e0c | 985 | struct inode *f2fs_iget(struct super_block *, unsigned long); |
4660f9c0 | 986 | int try_to_free_nats(struct f2fs_sb_info *, int); |
39a53e0c | 987 | void update_inode(struct inode *, struct page *); |
39936837 | 988 | int update_inode_page(struct inode *); |
39a53e0c JK |
989 | int f2fs_write_inode(struct inode *, struct writeback_control *); |
990 | void f2fs_evict_inode(struct inode *); | |
991 | ||
992 | /* | |
993 | * namei.c | |
994 | */ | |
995 | struct dentry *f2fs_get_parent(struct dentry *child); | |
996 | ||
997 | /* | |
998 | * dir.c | |
999 | */ | |
1000 | struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *, | |
1001 | struct page **); | |
1002 | struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **); | |
1003 | ino_t f2fs_inode_by_name(struct inode *, struct qstr *); | |
1004 | void f2fs_set_link(struct inode *, struct f2fs_dir_entry *, | |
1005 | struct page *, struct inode *); | |
1cd14caf | 1006 | int update_dent_inode(struct inode *, const struct qstr *); |
b7f7a5e0 | 1007 | int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *); |
39a53e0c JK |
1008 | void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *); |
1009 | int f2fs_make_empty(struct inode *, struct inode *); | |
1010 | bool f2fs_empty_dir(struct inode *); | |
1011 | ||
b7f7a5e0 AV |
1012 | static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode) |
1013 | { | |
1014 | return __f2fs_add_link(dentry->d_parent->d_inode, &dentry->d_name, | |
1015 | inode); | |
1016 | } | |
1017 | ||
39a53e0c JK |
1018 | /* |
1019 | * super.c | |
1020 | */ | |
1021 | int f2fs_sync_fs(struct super_block *, int); | |
a07ef784 NJ |
1022 | extern __printf(3, 4) |
1023 | void f2fs_msg(struct super_block *, const char *, const char *, ...); | |
39a53e0c JK |
1024 | |
1025 | /* | |
1026 | * hash.c | |
1027 | */ | |
9836b8b9 | 1028 | f2fs_hash_t f2fs_dentry_hash(const char *, size_t); |
39a53e0c JK |
1029 | |
1030 | /* | |
1031 | * node.c | |
1032 | */ | |
1033 | struct dnode_of_data; | |
1034 | struct node_info; | |
1035 | ||
1036 | int is_checkpointed_node(struct f2fs_sb_info *, nid_t); | |
1037 | void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *); | |
1038 | int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int); | |
1039 | int truncate_inode_blocks(struct inode *, pgoff_t); | |
4f16fb0f | 1040 | int truncate_xattr_node(struct inode *, struct page *); |
cfe58f9d | 1041 | int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t); |
39a53e0c | 1042 | int remove_inode_page(struct inode *); |
44a83ff6 | 1043 | struct page *new_inode_page(struct inode *, const struct qstr *); |
8ae8f162 | 1044 | struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *); |
39a53e0c JK |
1045 | void ra_node_page(struct f2fs_sb_info *, nid_t); |
1046 | struct page *get_node_page(struct f2fs_sb_info *, pgoff_t); | |
1047 | struct page *get_node_page_ra(struct page *, int); | |
1048 | void sync_inode_page(struct dnode_of_data *); | |
1049 | int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *); | |
1050 | bool alloc_nid(struct f2fs_sb_info *, nid_t *); | |
1051 | void alloc_nid_done(struct f2fs_sb_info *, nid_t); | |
1052 | void alloc_nid_failed(struct f2fs_sb_info *, nid_t); | |
1053 | void recover_node_page(struct f2fs_sb_info *, struct page *, | |
1054 | struct f2fs_summary *, struct node_info *, block_t); | |
1055 | int recover_inode_page(struct f2fs_sb_info *, struct page *); | |
1056 | int restore_node_summary(struct f2fs_sb_info *, unsigned int, | |
1057 | struct f2fs_summary_block *); | |
1058 | void flush_nat_entries(struct f2fs_sb_info *); | |
1059 | int build_node_manager(struct f2fs_sb_info *); | |
1060 | void destroy_node_manager(struct f2fs_sb_info *); | |
6e6093a8 | 1061 | int __init create_node_manager_caches(void); |
39a53e0c JK |
1062 | void destroy_node_manager_caches(void); |
1063 | ||
1064 | /* | |
1065 | * segment.c | |
1066 | */ | |
1067 | void f2fs_balance_fs(struct f2fs_sb_info *); | |
4660f9c0 | 1068 | void f2fs_balance_fs_bg(struct f2fs_sb_info *); |
39a53e0c | 1069 | void invalidate_blocks(struct f2fs_sb_info *, block_t); |
39a53e0c JK |
1070 | void clear_prefree_segments(struct f2fs_sb_info *); |
1071 | int npages_for_summary_flush(struct f2fs_sb_info *); | |
1072 | void allocate_new_segments(struct f2fs_sb_info *); | |
1073 | struct page *get_sum_page(struct f2fs_sb_info *, unsigned int); | |
3cd8a239 | 1074 | struct bio *f2fs_bio_alloc(struct block_device *, int); |
a569469e JX |
1075 | void f2fs_submit_bio(struct f2fs_sb_info *, enum page_type, bool); |
1076 | void f2fs_wait_on_page_writeback(struct page *, enum page_type, bool); | |
577e3495 | 1077 | void write_meta_page(struct f2fs_sb_info *, struct page *); |
39a53e0c JK |
1078 | void write_node_page(struct f2fs_sb_info *, struct page *, unsigned int, |
1079 | block_t, block_t *); | |
1080 | void write_data_page(struct inode *, struct page *, struct dnode_of_data*, | |
1081 | block_t, block_t *); | |
1082 | void rewrite_data_page(struct f2fs_sb_info *, struct page *, block_t); | |
1083 | void recover_data_page(struct f2fs_sb_info *, struct page *, | |
1084 | struct f2fs_summary *, block_t, block_t); | |
1085 | void rewrite_node_page(struct f2fs_sb_info *, struct page *, | |
1086 | struct f2fs_summary *, block_t, block_t); | |
1087 | void write_data_summaries(struct f2fs_sb_info *, block_t); | |
1088 | void write_node_summaries(struct f2fs_sb_info *, block_t); | |
1089 | int lookup_journal_in_cursum(struct f2fs_summary_block *, | |
1090 | int, unsigned int, int); | |
1091 | void flush_sit_entries(struct f2fs_sb_info *); | |
1092 | int build_segment_manager(struct f2fs_sb_info *); | |
39a53e0c | 1093 | void destroy_segment_manager(struct f2fs_sb_info *); |
7fd9e544 JK |
1094 | int __init create_segment_manager_caches(void); |
1095 | void destroy_segment_manager_caches(void); | |
39a53e0c JK |
1096 | |
1097 | /* | |
1098 | * checkpoint.c | |
1099 | */ | |
1100 | struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t); | |
1101 | struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t); | |
1102 | long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long); | |
cbd56e7d JK |
1103 | int acquire_orphan_inode(struct f2fs_sb_info *); |
1104 | void release_orphan_inode(struct f2fs_sb_info *); | |
39a53e0c JK |
1105 | void add_orphan_inode(struct f2fs_sb_info *, nid_t); |
1106 | void remove_orphan_inode(struct f2fs_sb_info *, nid_t); | |
1107 | int recover_orphan_inodes(struct f2fs_sb_info *); | |
1108 | int get_valid_checkpoint(struct f2fs_sb_info *); | |
1109 | void set_dirty_dir_page(struct inode *, struct page *); | |
5deb8267 | 1110 | void add_dirty_dir_inode(struct inode *); |
39a53e0c | 1111 | void remove_dirty_dir_inode(struct inode *); |
74d0b917 | 1112 | struct inode *check_dirty_dir_inode(struct f2fs_sb_info *, nid_t); |
39a53e0c | 1113 | void sync_dirty_dir_inodes(struct f2fs_sb_info *); |
43727527 | 1114 | void write_checkpoint(struct f2fs_sb_info *, bool); |
39a53e0c | 1115 | void init_orphan_info(struct f2fs_sb_info *); |
6e6093a8 | 1116 | int __init create_checkpoint_caches(void); |
39a53e0c JK |
1117 | void destroy_checkpoint_caches(void); |
1118 | ||
1119 | /* | |
1120 | * data.c | |
1121 | */ | |
1122 | int reserve_new_block(struct dnode_of_data *); | |
1123 | void update_extent_cache(block_t, struct dnode_of_data *); | |
c718379b | 1124 | struct page *find_data_page(struct inode *, pgoff_t, bool); |
39a53e0c | 1125 | struct page *get_lock_data_page(struct inode *, pgoff_t); |
64aa7ed9 | 1126 | struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool); |
39a53e0c JK |
1127 | int f2fs_readpage(struct f2fs_sb_info *, struct page *, block_t, int); |
1128 | int do_write_data_page(struct page *); | |
1129 | ||
1130 | /* | |
1131 | * gc.c | |
1132 | */ | |
1133 | int start_gc_thread(struct f2fs_sb_info *); | |
1134 | void stop_gc_thread(struct f2fs_sb_info *); | |
de93653f | 1135 | block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *); |
408e9375 | 1136 | int f2fs_gc(struct f2fs_sb_info *); |
39a53e0c | 1137 | void build_gc_manager(struct f2fs_sb_info *); |
6e6093a8 | 1138 | int __init create_gc_caches(void); |
39a53e0c JK |
1139 | void destroy_gc_caches(void); |
1140 | ||
1141 | /* | |
1142 | * recovery.c | |
1143 | */ | |
6ead1142 | 1144 | int recover_fsync_data(struct f2fs_sb_info *); |
39a53e0c JK |
1145 | bool space_for_roll_forward(struct f2fs_sb_info *); |
1146 | ||
1147 | /* | |
1148 | * debug.c | |
1149 | */ | |
1150 | #ifdef CONFIG_F2FS_STAT_FS | |
1151 | struct f2fs_stat_info { | |
1152 | struct list_head stat_list; | |
1153 | struct f2fs_sb_info *sbi; | |
1154 | struct mutex stat_lock; | |
1155 | int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs; | |
1156 | int main_area_segs, main_area_sections, main_area_zones; | |
1157 | int hit_ext, total_ext; | |
1158 | int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta; | |
1159 | int nats, sits, fnids; | |
1160 | int total_count, utilization; | |
1161 | int bg_gc; | |
1162 | unsigned int valid_count, valid_node_count, valid_inode_count; | |
1163 | unsigned int bimodal, avg_vblocks; | |
1164 | int util_free, util_valid, util_invalid; | |
1165 | int rsvd_segs, overp_segs; | |
1166 | int dirty_count, node_pages, meta_pages; | |
1167 | int prefree_count, call_count; | |
1168 | int tot_segs, node_segs, data_segs, free_segs, free_secs; | |
1169 | int tot_blks, data_blks, node_blks; | |
1170 | int curseg[NR_CURSEG_TYPE]; | |
1171 | int cursec[NR_CURSEG_TYPE]; | |
1172 | int curzone[NR_CURSEG_TYPE]; | |
1173 | ||
1174 | unsigned int segment_count[2]; | |
1175 | unsigned int block_count[2]; | |
1176 | unsigned base_mem, cache_mem; | |
1177 | }; | |
1178 | ||
963d4f7d GZ |
1179 | static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi) |
1180 | { | |
1181 | return (struct f2fs_stat_info*)sbi->stat_info; | |
1182 | } | |
1183 | ||
dcdfff65 JK |
1184 | #define stat_inc_call_count(si) ((si)->call_count++) |
1185 | #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++) | |
1186 | #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++) | |
1187 | #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--) | |
1188 | #define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++) | |
1189 | #define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++) | |
1190 | #define stat_inc_seg_type(sbi, curseg) \ | |
1191 | ((sbi)->segment_count[(curseg)->alloc_type]++) | |
1192 | #define stat_inc_block_count(sbi, curseg) \ | |
1193 | ((sbi)->block_count[(curseg)->alloc_type]++) | |
39a53e0c JK |
1194 | |
1195 | #define stat_inc_seg_count(sbi, type) \ | |
1196 | do { \ | |
963d4f7d | 1197 | struct f2fs_stat_info *si = F2FS_STAT(sbi); \ |
39a53e0c JK |
1198 | (si)->tot_segs++; \ |
1199 | if (type == SUM_TYPE_DATA) \ | |
1200 | si->data_segs++; \ | |
1201 | else \ | |
1202 | si->node_segs++; \ | |
1203 | } while (0) | |
1204 | ||
1205 | #define stat_inc_tot_blk_count(si, blks) \ | |
1206 | (si->tot_blks += (blks)) | |
1207 | ||
1208 | #define stat_inc_data_blk_count(sbi, blks) \ | |
1209 | do { \ | |
963d4f7d | 1210 | struct f2fs_stat_info *si = F2FS_STAT(sbi); \ |
39a53e0c JK |
1211 | stat_inc_tot_blk_count(si, blks); \ |
1212 | si->data_blks += (blks); \ | |
1213 | } while (0) | |
1214 | ||
1215 | #define stat_inc_node_blk_count(sbi, blks) \ | |
1216 | do { \ | |
963d4f7d | 1217 | struct f2fs_stat_info *si = F2FS_STAT(sbi); \ |
39a53e0c JK |
1218 | stat_inc_tot_blk_count(si, blks); \ |
1219 | si->node_blks += (blks); \ | |
1220 | } while (0) | |
1221 | ||
1222 | int f2fs_build_stats(struct f2fs_sb_info *); | |
1223 | void f2fs_destroy_stats(struct f2fs_sb_info *); | |
6e6093a8 | 1224 | void __init f2fs_create_root_stats(void); |
4589d25d | 1225 | void f2fs_destroy_root_stats(void); |
39a53e0c JK |
1226 | #else |
1227 | #define stat_inc_call_count(si) | |
dcdfff65 JK |
1228 | #define stat_inc_bggc_count(si) |
1229 | #define stat_inc_dirty_dir(sbi) | |
1230 | #define stat_dec_dirty_dir(sbi) | |
1231 | #define stat_inc_total_hit(sb) | |
1232 | #define stat_inc_read_hit(sb) | |
1233 | #define stat_inc_seg_type(sbi, curseg) | |
1234 | #define stat_inc_block_count(sbi, curseg) | |
39a53e0c JK |
1235 | #define stat_inc_seg_count(si, type) |
1236 | #define stat_inc_tot_blk_count(si, blks) | |
1237 | #define stat_inc_data_blk_count(si, blks) | |
1238 | #define stat_inc_node_blk_count(sbi, blks) | |
1239 | ||
1240 | static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; } | |
1241 | static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { } | |
6e6093a8 | 1242 | static inline void __init f2fs_create_root_stats(void) { } |
4589d25d | 1243 | static inline void f2fs_destroy_root_stats(void) { } |
39a53e0c JK |
1244 | #endif |
1245 | ||
1246 | extern const struct file_operations f2fs_dir_operations; | |
1247 | extern const struct file_operations f2fs_file_operations; | |
1248 | extern const struct inode_operations f2fs_file_inode_operations; | |
1249 | extern const struct address_space_operations f2fs_dblock_aops; | |
1250 | extern const struct address_space_operations f2fs_node_aops; | |
1251 | extern const struct address_space_operations f2fs_meta_aops; | |
1252 | extern const struct inode_operations f2fs_dir_inode_operations; | |
1253 | extern const struct inode_operations f2fs_symlink_inode_operations; | |
1254 | extern const struct inode_operations f2fs_special_inode_operations; | |
1255 | #endif |