Commit | Line | Data |
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0a8165d7 | 1 | /* |
39a53e0c JK |
2 | * fs/f2fs/f2fs.h |
3 | * | |
4 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. | |
5 | * http://www.samsung.com/ | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | #ifndef _LINUX_F2FS_H | |
12 | #define _LINUX_F2FS_H | |
13 | ||
14 | #include <linux/types.h> | |
15 | #include <linux/page-flags.h> | |
16 | #include <linux/buffer_head.h> | |
39a53e0c JK |
17 | #include <linux/slab.h> |
18 | #include <linux/crc32.h> | |
19 | #include <linux/magic.h> | |
c2d715d1 | 20 | #include <linux/kobject.h> |
7bd59381 | 21 | #include <linux/sched.h> |
39a53e0c | 22 | |
5d56b671 JK |
23 | #ifdef CONFIG_F2FS_CHECK_FS |
24 | #define f2fs_bug_on(condition) BUG_ON(condition) | |
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 | ||
100 | /* for the list of fsync inodes, used only during recovery */ | |
101 | struct fsync_inode_entry { | |
102 | struct list_head list; /* list head */ | |
103 | struct inode *inode; /* vfs inode pointer */ | |
104 | block_t blkaddr; /* block address locating the last inode */ | |
105 | }; | |
106 | ||
107 | #define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats)) | |
108 | #define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits)) | |
109 | ||
110 | #define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne) | |
111 | #define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid) | |
112 | #define sit_in_journal(sum, i) (sum->sit_j.entries[i].se) | |
113 | #define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno) | |
114 | ||
115 | static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i) | |
116 | { | |
117 | int before = nats_in_cursum(rs); | |
118 | rs->n_nats = cpu_to_le16(before + i); | |
119 | return before; | |
120 | } | |
121 | ||
122 | static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i) | |
123 | { | |
124 | int before = sits_in_cursum(rs); | |
125 | rs->n_sits = cpu_to_le16(before + i); | |
126 | return before; | |
127 | } | |
128 | ||
e9750824 NJ |
129 | /* |
130 | * ioctl commands | |
131 | */ | |
132 | #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS | |
133 | #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS | |
134 | ||
135 | #if defined(__KERNEL__) && defined(CONFIG_COMPAT) | |
136 | /* | |
137 | * ioctl commands in 32 bit emulation | |
138 | */ | |
139 | #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS | |
140 | #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS | |
141 | #endif | |
142 | ||
39a53e0c JK |
143 | /* |
144 | * For INODE and NODE manager | |
145 | */ | |
dbe6a5ff JK |
146 | /* |
147 | * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1 | |
148 | * as its node offset to distinguish from index node blocks. | |
149 | * But some bits are used to mark the node block. | |
150 | */ | |
151 | #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \ | |
152 | >> OFFSET_BIT_SHIFT) | |
266e97a8 JK |
153 | enum { |
154 | ALLOC_NODE, /* allocate a new node page if needed */ | |
155 | LOOKUP_NODE, /* look up a node without readahead */ | |
156 | LOOKUP_NODE_RA, /* | |
157 | * look up a node with readahead called | |
158 | * by get_datablock_ro. | |
39a53e0c | 159 | */ |
266e97a8 JK |
160 | }; |
161 | ||
39a53e0c JK |
162 | #define F2FS_LINK_MAX 32000 /* maximum link count per file */ |
163 | ||
164 | /* for in-memory extent cache entry */ | |
165 | struct extent_info { | |
166 | rwlock_t ext_lock; /* rwlock for consistency */ | |
167 | unsigned int fofs; /* start offset in a file */ | |
168 | u32 blk_addr; /* start block address of the extent */ | |
111d2495 | 169 | unsigned int len; /* length of the extent */ |
39a53e0c JK |
170 | }; |
171 | ||
172 | /* | |
173 | * i_advise uses FADVISE_XXX_BIT. We can add additional hints later. | |
174 | */ | |
175 | #define FADVISE_COLD_BIT 0x01 | |
354a3399 | 176 | #define FADVISE_LOST_PINO_BIT 0x02 |
39a53e0c JK |
177 | |
178 | struct f2fs_inode_info { | |
179 | struct inode vfs_inode; /* serve a vfs inode */ | |
180 | unsigned long i_flags; /* keep an inode flags for ioctl */ | |
181 | unsigned char i_advise; /* use to give file attribute hints */ | |
182 | unsigned int i_current_depth; /* use only in directory structure */ | |
6666e6aa | 183 | unsigned int i_pino; /* parent inode number */ |
39a53e0c JK |
184 | umode_t i_acl_mode; /* keep file acl mode temporarily */ |
185 | ||
186 | /* Use below internally in f2fs*/ | |
187 | unsigned long flags; /* use to pass per-file flags */ | |
39a53e0c JK |
188 | atomic_t dirty_dents; /* # of dirty dentry pages */ |
189 | f2fs_hash_t chash; /* hash value of given file name */ | |
190 | unsigned int clevel; /* maximum level of given file name */ | |
191 | nid_t i_xattr_nid; /* node id that contains xattrs */ | |
e518ff81 | 192 | unsigned long long xattr_ver; /* cp version of xattr modification */ |
39a53e0c JK |
193 | struct extent_info ext; /* in-memory extent cache entry */ |
194 | }; | |
195 | ||
196 | static inline void get_extent_info(struct extent_info *ext, | |
197 | struct f2fs_extent i_ext) | |
198 | { | |
199 | write_lock(&ext->ext_lock); | |
200 | ext->fofs = le32_to_cpu(i_ext.fofs); | |
201 | ext->blk_addr = le32_to_cpu(i_ext.blk_addr); | |
202 | ext->len = le32_to_cpu(i_ext.len); | |
203 | write_unlock(&ext->ext_lock); | |
204 | } | |
205 | ||
206 | static inline void set_raw_extent(struct extent_info *ext, | |
207 | struct f2fs_extent *i_ext) | |
208 | { | |
209 | read_lock(&ext->ext_lock); | |
210 | i_ext->fofs = cpu_to_le32(ext->fofs); | |
211 | i_ext->blk_addr = cpu_to_le32(ext->blk_addr); | |
212 | i_ext->len = cpu_to_le32(ext->len); | |
213 | read_unlock(&ext->ext_lock); | |
214 | } | |
215 | ||
216 | struct f2fs_nm_info { | |
217 | block_t nat_blkaddr; /* base disk address of NAT */ | |
218 | nid_t max_nid; /* maximum possible node ids */ | |
39a53e0c JK |
219 | nid_t next_scan_nid; /* the next nid to be scanned */ |
220 | ||
221 | /* NAT cache management */ | |
222 | struct radix_tree_root nat_root;/* root of the nat entry cache */ | |
223 | rwlock_t nat_tree_lock; /* protect nat_tree_lock */ | |
224 | unsigned int nat_cnt; /* the # of cached nat entries */ | |
225 | struct list_head nat_entries; /* cached nat entry list (clean) */ | |
226 | struct list_head dirty_nat_entries; /* cached nat entry list (dirty) */ | |
227 | ||
228 | /* free node ids management */ | |
229 | struct list_head free_nid_list; /* a list for free nids */ | |
230 | spinlock_t free_nid_list_lock; /* protect free nid list */ | |
231 | unsigned int fcnt; /* the number of free node id */ | |
232 | struct mutex build_lock; /* lock for build free nids */ | |
233 | ||
234 | /* for checkpoint */ | |
235 | char *nat_bitmap; /* NAT bitmap pointer */ | |
236 | int bitmap_size; /* bitmap size */ | |
237 | }; | |
238 | ||
239 | /* | |
240 | * this structure is used as one of function parameters. | |
241 | * all the information are dedicated to a given direct node block determined | |
242 | * by the data offset in a file. | |
243 | */ | |
244 | struct dnode_of_data { | |
245 | struct inode *inode; /* vfs inode pointer */ | |
246 | struct page *inode_page; /* its inode page, NULL is possible */ | |
247 | struct page *node_page; /* cached direct node page */ | |
248 | nid_t nid; /* node id of the direct node block */ | |
249 | unsigned int ofs_in_node; /* data offset in the node page */ | |
250 | bool inode_page_locked; /* inode page is locked or not */ | |
251 | block_t data_blkaddr; /* block address of the node block */ | |
252 | }; | |
253 | ||
254 | static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode, | |
255 | struct page *ipage, struct page *npage, nid_t nid) | |
256 | { | |
d66d1f76 | 257 | memset(dn, 0, sizeof(*dn)); |
39a53e0c JK |
258 | dn->inode = inode; |
259 | dn->inode_page = ipage; | |
260 | dn->node_page = npage; | |
261 | dn->nid = nid; | |
39a53e0c JK |
262 | } |
263 | ||
264 | /* | |
265 | * For SIT manager | |
266 | * | |
267 | * By default, there are 6 active log areas across the whole main area. | |
268 | * When considering hot and cold data separation to reduce cleaning overhead, | |
269 | * we split 3 for data logs and 3 for node logs as hot, warm, and cold types, | |
270 | * respectively. | |
271 | * In the current design, you should not change the numbers intentionally. | |
272 | * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6 | |
273 | * logs individually according to the underlying devices. (default: 6) | |
274 | * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for | |
275 | * data and 8 for node logs. | |
276 | */ | |
277 | #define NR_CURSEG_DATA_TYPE (3) | |
278 | #define NR_CURSEG_NODE_TYPE (3) | |
279 | #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE) | |
280 | ||
281 | enum { | |
282 | CURSEG_HOT_DATA = 0, /* directory entry blocks */ | |
283 | CURSEG_WARM_DATA, /* data blocks */ | |
284 | CURSEG_COLD_DATA, /* multimedia or GCed data blocks */ | |
285 | CURSEG_HOT_NODE, /* direct node blocks of directory files */ | |
286 | CURSEG_WARM_NODE, /* direct node blocks of normal files */ | |
287 | CURSEG_COLD_NODE, /* indirect node blocks */ | |
288 | NO_CHECK_TYPE | |
289 | }; | |
290 | ||
291 | struct f2fs_sm_info { | |
292 | struct sit_info *sit_info; /* whole segment information */ | |
293 | struct free_segmap_info *free_info; /* free segment information */ | |
294 | struct dirty_seglist_info *dirty_info; /* dirty segment information */ | |
295 | struct curseg_info *curseg_array; /* active segment information */ | |
296 | ||
297 | struct list_head wblist_head; /* list of under-writeback pages */ | |
298 | spinlock_t wblist_lock; /* lock for checkpoint */ | |
299 | ||
300 | block_t seg0_blkaddr; /* block address of 0'th segment */ | |
301 | block_t main_blkaddr; /* start block address of main area */ | |
302 | block_t ssa_blkaddr; /* start block address of SSA area */ | |
303 | ||
304 | unsigned int segment_count; /* total # of segments */ | |
305 | unsigned int main_segments; /* # of segments in main area */ | |
306 | unsigned int reserved_segments; /* # of reserved segments */ | |
307 | unsigned int ovp_segments; /* # of overprovision segments */ | |
81eb8d6e JK |
308 | |
309 | /* a threshold to reclaim prefree segments */ | |
310 | unsigned int rec_prefree_segments; | |
39a53e0c JK |
311 | }; |
312 | ||
39a53e0c JK |
313 | /* |
314 | * For superblock | |
315 | */ | |
316 | /* | |
317 | * COUNT_TYPE for monitoring | |
318 | * | |
319 | * f2fs monitors the number of several block types such as on-writeback, | |
320 | * dirty dentry blocks, dirty node blocks, and dirty meta blocks. | |
321 | */ | |
322 | enum count_type { | |
323 | F2FS_WRITEBACK, | |
324 | F2FS_DIRTY_DENTS, | |
325 | F2FS_DIRTY_NODES, | |
326 | F2FS_DIRTY_META, | |
327 | NR_COUNT_TYPE, | |
328 | }; | |
329 | ||
39a53e0c JK |
330 | /* |
331 | * The below are the page types of bios used in submti_bio(). | |
332 | * The available types are: | |
333 | * DATA User data pages. It operates as async mode. | |
334 | * NODE Node pages. It operates as async mode. | |
335 | * META FS metadata pages such as SIT, NAT, CP. | |
336 | * NR_PAGE_TYPE The number of page types. | |
337 | * META_FLUSH Make sure the previous pages are written | |
338 | * with waiting the bio's completion | |
339 | * ... Only can be used with META. | |
340 | */ | |
341 | enum page_type { | |
342 | DATA, | |
343 | NODE, | |
344 | META, | |
345 | NR_PAGE_TYPE, | |
346 | META_FLUSH, | |
347 | }; | |
348 | ||
349 | struct f2fs_sb_info { | |
350 | struct super_block *sb; /* pointer to VFS super block */ | |
5e176d54 | 351 | struct proc_dir_entry *s_proc; /* proc entry */ |
39a53e0c JK |
352 | struct buffer_head *raw_super_buf; /* buffer head of raw sb */ |
353 | struct f2fs_super_block *raw_super; /* raw super block pointer */ | |
354 | int s_dirty; /* dirty flag for checkpoint */ | |
355 | ||
356 | /* for node-related operations */ | |
357 | struct f2fs_nm_info *nm_info; /* node manager */ | |
358 | struct inode *node_inode; /* cache node blocks */ | |
359 | ||
360 | /* for segment-related operations */ | |
361 | struct f2fs_sm_info *sm_info; /* segment manager */ | |
362 | struct bio *bio[NR_PAGE_TYPE]; /* bios to merge */ | |
363 | sector_t last_block_in_bio[NR_PAGE_TYPE]; /* last block number */ | |
364 | struct rw_semaphore bio_sem; /* IO semaphore */ | |
365 | ||
366 | /* for checkpoint */ | |
367 | struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */ | |
368 | struct inode *meta_inode; /* cache meta blocks */ | |
39936837 | 369 | struct mutex cp_mutex; /* checkpoint procedure lock */ |
e479556b | 370 | struct rw_semaphore cp_rwsem; /* blocking FS operations */ |
39936837 | 371 | struct mutex node_write; /* locking node writes */ |
39a53e0c | 372 | struct mutex writepages; /* mutex for writepages() */ |
aabe5136 HL |
373 | bool por_doing; /* recovery is doing or not */ |
374 | bool on_build_free_nids; /* build_free_nids is doing */ | |
fb51b5ef | 375 | wait_queue_head_t cp_wait; |
39a53e0c JK |
376 | |
377 | /* for orphan inode management */ | |
378 | struct list_head orphan_inode_list; /* orphan inode list */ | |
379 | struct mutex orphan_inode_mutex; /* for orphan inode list */ | |
380 | unsigned int n_orphans; /* # of orphan inodes */ | |
381 | ||
382 | /* for directory inode management */ | |
383 | struct list_head dir_inode_list; /* dir inode list */ | |
384 | spinlock_t dir_inode_lock; /* for dir inode list lock */ | |
39a53e0c JK |
385 | |
386 | /* basic file system units */ | |
387 | unsigned int log_sectors_per_block; /* log2 sectors per block */ | |
388 | unsigned int log_blocksize; /* log2 block size */ | |
389 | unsigned int blocksize; /* block size */ | |
390 | unsigned int root_ino_num; /* root inode number*/ | |
391 | unsigned int node_ino_num; /* node inode number*/ | |
392 | unsigned int meta_ino_num; /* meta inode number*/ | |
393 | unsigned int log_blocks_per_seg; /* log2 blocks per segment */ | |
394 | unsigned int blocks_per_seg; /* blocks per segment */ | |
395 | unsigned int segs_per_sec; /* segments per section */ | |
396 | unsigned int secs_per_zone; /* sections per zone */ | |
397 | unsigned int total_sections; /* total section count */ | |
398 | unsigned int total_node_count; /* total node block count */ | |
399 | unsigned int total_valid_node_count; /* valid node block count */ | |
400 | unsigned int total_valid_inode_count; /* valid inode count */ | |
401 | int active_logs; /* # of active logs */ | |
402 | ||
403 | block_t user_block_count; /* # of user blocks */ | |
404 | block_t total_valid_block_count; /* # of valid blocks */ | |
405 | block_t alloc_valid_block_count; /* # of allocated blocks */ | |
406 | block_t last_valid_block_count; /* for recovery */ | |
407 | u32 s_next_generation; /* for NFS support */ | |
408 | atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */ | |
409 | ||
410 | struct f2fs_mount_info mount_opt; /* mount options */ | |
411 | ||
412 | /* for cleaning operations */ | |
413 | struct mutex gc_mutex; /* mutex for GC */ | |
414 | struct f2fs_gc_kthread *gc_thread; /* GC thread */ | |
5ec4e49f | 415 | unsigned int cur_victim_sec; /* current victim section num */ |
39a53e0c JK |
416 | |
417 | /* | |
418 | * for stat information. | |
419 | * one is for the LFS mode, and the other is for the SSR mode. | |
420 | */ | |
35b09d82 | 421 | #ifdef CONFIG_F2FS_STAT_FS |
39a53e0c JK |
422 | struct f2fs_stat_info *stat_info; /* FS status information */ |
423 | unsigned int segment_count[2]; /* # of allocated segments */ | |
424 | unsigned int block_count[2]; /* # of allocated blocks */ | |
39a53e0c JK |
425 | int total_hit_ext, read_hit_ext; /* extent cache hit ratio */ |
426 | int bg_gc; /* background gc calls */ | |
35b09d82 NJ |
427 | unsigned int n_dirty_dirs; /* # of dir inodes */ |
428 | #endif | |
429 | unsigned int last_victim[2]; /* last victim segment # */ | |
39a53e0c | 430 | spinlock_t stat_lock; /* lock for stat operations */ |
b59d0bae NJ |
431 | |
432 | /* For sysfs suppport */ | |
433 | struct kobject s_kobj; | |
434 | struct completion s_kobj_unregister; | |
39a53e0c JK |
435 | }; |
436 | ||
437 | /* | |
438 | * Inline functions | |
439 | */ | |
440 | static inline struct f2fs_inode_info *F2FS_I(struct inode *inode) | |
441 | { | |
442 | return container_of(inode, struct f2fs_inode_info, vfs_inode); | |
443 | } | |
444 | ||
445 | static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb) | |
446 | { | |
447 | return sb->s_fs_info; | |
448 | } | |
449 | ||
450 | static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi) | |
451 | { | |
452 | return (struct f2fs_super_block *)(sbi->raw_super); | |
453 | } | |
454 | ||
455 | static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi) | |
456 | { | |
457 | return (struct f2fs_checkpoint *)(sbi->ckpt); | |
458 | } | |
459 | ||
45590710 GZ |
460 | static inline struct f2fs_node *F2FS_NODE(struct page *page) |
461 | { | |
462 | return (struct f2fs_node *)page_address(page); | |
463 | } | |
464 | ||
39a53e0c JK |
465 | static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi) |
466 | { | |
467 | return (struct f2fs_nm_info *)(sbi->nm_info); | |
468 | } | |
469 | ||
470 | static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi) | |
471 | { | |
472 | return (struct f2fs_sm_info *)(sbi->sm_info); | |
473 | } | |
474 | ||
475 | static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi) | |
476 | { | |
477 | return (struct sit_info *)(SM_I(sbi)->sit_info); | |
478 | } | |
479 | ||
480 | static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi) | |
481 | { | |
482 | return (struct free_segmap_info *)(SM_I(sbi)->free_info); | |
483 | } | |
484 | ||
485 | static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi) | |
486 | { | |
487 | return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info); | |
488 | } | |
489 | ||
490 | static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info *sbi) | |
491 | { | |
492 | sbi->s_dirty = 1; | |
493 | } | |
494 | ||
495 | static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info *sbi) | |
496 | { | |
497 | sbi->s_dirty = 0; | |
498 | } | |
499 | ||
d71b5564 JK |
500 | static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp) |
501 | { | |
502 | return le64_to_cpu(cp->checkpoint_ver); | |
503 | } | |
504 | ||
25ca923b JK |
505 | static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) |
506 | { | |
507 | unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); | |
508 | return ckpt_flags & f; | |
509 | } | |
510 | ||
511 | static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) | |
512 | { | |
513 | unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); | |
514 | ckpt_flags |= f; | |
515 | cp->ckpt_flags = cpu_to_le32(ckpt_flags); | |
516 | } | |
517 | ||
518 | static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) | |
519 | { | |
520 | unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); | |
521 | ckpt_flags &= (~f); | |
522 | cp->ckpt_flags = cpu_to_le32(ckpt_flags); | |
523 | } | |
524 | ||
e479556b | 525 | static inline void f2fs_lock_op(struct f2fs_sb_info *sbi) |
39936837 | 526 | { |
e479556b | 527 | down_read(&sbi->cp_rwsem); |
39936837 JK |
528 | } |
529 | ||
e479556b | 530 | static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi) |
39a53e0c | 531 | { |
e479556b | 532 | up_read(&sbi->cp_rwsem); |
39a53e0c JK |
533 | } |
534 | ||
e479556b | 535 | static inline void f2fs_lock_all(struct f2fs_sb_info *sbi) |
39a53e0c | 536 | { |
e479556b | 537 | down_write_nest_lock(&sbi->cp_rwsem, &sbi->cp_mutex); |
39936837 JK |
538 | } |
539 | ||
e479556b | 540 | static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi) |
39936837 | 541 | { |
e479556b | 542 | up_write(&sbi->cp_rwsem); |
39a53e0c JK |
543 | } |
544 | ||
545 | /* | |
546 | * Check whether the given nid is within node id range. | |
547 | */ | |
064e0823 | 548 | static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid) |
39a53e0c | 549 | { |
064e0823 NJ |
550 | WARN_ON((nid >= NM_I(sbi)->max_nid)); |
551 | if (nid >= NM_I(sbi)->max_nid) | |
552 | return -EINVAL; | |
553 | return 0; | |
39a53e0c JK |
554 | } |
555 | ||
556 | #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1 | |
557 | ||
558 | /* | |
559 | * Check whether the inode has blocks or not | |
560 | */ | |
561 | static inline int F2FS_HAS_BLOCKS(struct inode *inode) | |
562 | { | |
563 | if (F2FS_I(inode)->i_xattr_nid) | |
564 | return (inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1); | |
565 | else | |
566 | return (inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS); | |
567 | } | |
568 | ||
569 | static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi, | |
570 | struct inode *inode, blkcnt_t count) | |
571 | { | |
572 | block_t valid_block_count; | |
573 | ||
574 | spin_lock(&sbi->stat_lock); | |
575 | valid_block_count = | |
576 | sbi->total_valid_block_count + (block_t)count; | |
577 | if (valid_block_count > sbi->user_block_count) { | |
578 | spin_unlock(&sbi->stat_lock); | |
579 | return false; | |
580 | } | |
581 | inode->i_blocks += count; | |
582 | sbi->total_valid_block_count = valid_block_count; | |
583 | sbi->alloc_valid_block_count += (block_t)count; | |
584 | spin_unlock(&sbi->stat_lock); | |
585 | return true; | |
586 | } | |
587 | ||
588 | static inline int dec_valid_block_count(struct f2fs_sb_info *sbi, | |
589 | struct inode *inode, | |
590 | blkcnt_t count) | |
591 | { | |
592 | spin_lock(&sbi->stat_lock); | |
5d56b671 JK |
593 | f2fs_bug_on(sbi->total_valid_block_count < (block_t) count); |
594 | f2fs_bug_on(inode->i_blocks < count); | |
39a53e0c JK |
595 | inode->i_blocks -= count; |
596 | sbi->total_valid_block_count -= (block_t)count; | |
597 | spin_unlock(&sbi->stat_lock); | |
598 | return 0; | |
599 | } | |
600 | ||
601 | static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type) | |
602 | { | |
603 | atomic_inc(&sbi->nr_pages[count_type]); | |
604 | F2FS_SET_SB_DIRT(sbi); | |
605 | } | |
606 | ||
607 | static inline void inode_inc_dirty_dents(struct inode *inode) | |
608 | { | |
609 | atomic_inc(&F2FS_I(inode)->dirty_dents); | |
610 | } | |
611 | ||
612 | static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type) | |
613 | { | |
614 | atomic_dec(&sbi->nr_pages[count_type]); | |
615 | } | |
616 | ||
617 | static inline void inode_dec_dirty_dents(struct inode *inode) | |
618 | { | |
619 | atomic_dec(&F2FS_I(inode)->dirty_dents); | |
620 | } | |
621 | ||
622 | static inline int get_pages(struct f2fs_sb_info *sbi, int count_type) | |
623 | { | |
624 | return atomic_read(&sbi->nr_pages[count_type]); | |
625 | } | |
626 | ||
5ac206cf NJ |
627 | static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type) |
628 | { | |
629 | unsigned int pages_per_sec = sbi->segs_per_sec * | |
630 | (1 << sbi->log_blocks_per_seg); | |
631 | return ((get_pages(sbi, block_type) + pages_per_sec - 1) | |
632 | >> sbi->log_blocks_per_seg) / sbi->segs_per_sec; | |
633 | } | |
634 | ||
39a53e0c JK |
635 | static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi) |
636 | { | |
637 | block_t ret; | |
638 | spin_lock(&sbi->stat_lock); | |
639 | ret = sbi->total_valid_block_count; | |
640 | spin_unlock(&sbi->stat_lock); | |
641 | return ret; | |
642 | } | |
643 | ||
644 | static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag) | |
645 | { | |
646 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
647 | ||
648 | /* return NAT or SIT bitmap */ | |
649 | if (flag == NAT_BITMAP) | |
650 | return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize); | |
651 | else if (flag == SIT_BITMAP) | |
652 | return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize); | |
653 | ||
654 | return 0; | |
655 | } | |
656 | ||
657 | static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag) | |
658 | { | |
659 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
25ca923b JK |
660 | int offset = (flag == NAT_BITMAP) ? |
661 | le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0; | |
39a53e0c JK |
662 | return &ckpt->sit_nat_version_bitmap + offset; |
663 | } | |
664 | ||
665 | static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi) | |
666 | { | |
667 | block_t start_addr; | |
668 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
d71b5564 | 669 | unsigned long long ckpt_version = cur_cp_version(ckpt); |
39a53e0c | 670 | |
25ca923b | 671 | start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr); |
39a53e0c JK |
672 | |
673 | /* | |
674 | * odd numbered checkpoint should at cp segment 0 | |
675 | * and even segent must be at cp segment 1 | |
676 | */ | |
677 | if (!(ckpt_version & 1)) | |
678 | start_addr += sbi->blocks_per_seg; | |
679 | ||
680 | return start_addr; | |
681 | } | |
682 | ||
683 | static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi) | |
684 | { | |
685 | return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum); | |
686 | } | |
687 | ||
688 | static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi, | |
689 | struct inode *inode, | |
690 | unsigned int count) | |
691 | { | |
692 | block_t valid_block_count; | |
693 | unsigned int valid_node_count; | |
694 | ||
695 | spin_lock(&sbi->stat_lock); | |
696 | ||
697 | valid_block_count = sbi->total_valid_block_count + (block_t)count; | |
698 | sbi->alloc_valid_block_count += (block_t)count; | |
699 | valid_node_count = sbi->total_valid_node_count + count; | |
700 | ||
701 | if (valid_block_count > sbi->user_block_count) { | |
702 | spin_unlock(&sbi->stat_lock); | |
703 | return false; | |
704 | } | |
705 | ||
706 | if (valid_node_count > sbi->total_node_count) { | |
707 | spin_unlock(&sbi->stat_lock); | |
708 | return false; | |
709 | } | |
710 | ||
711 | if (inode) | |
712 | inode->i_blocks += count; | |
713 | sbi->total_valid_node_count = valid_node_count; | |
714 | sbi->total_valid_block_count = valid_block_count; | |
715 | spin_unlock(&sbi->stat_lock); | |
716 | ||
717 | return true; | |
718 | } | |
719 | ||
720 | static inline void dec_valid_node_count(struct f2fs_sb_info *sbi, | |
721 | struct inode *inode, | |
722 | unsigned int count) | |
723 | { | |
724 | spin_lock(&sbi->stat_lock); | |
725 | ||
5d56b671 JK |
726 | f2fs_bug_on(sbi->total_valid_block_count < count); |
727 | f2fs_bug_on(sbi->total_valid_node_count < count); | |
728 | f2fs_bug_on(inode->i_blocks < count); | |
39a53e0c JK |
729 | |
730 | inode->i_blocks -= count; | |
731 | sbi->total_valid_node_count -= count; | |
732 | sbi->total_valid_block_count -= (block_t)count; | |
733 | ||
734 | spin_unlock(&sbi->stat_lock); | |
735 | } | |
736 | ||
737 | static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi) | |
738 | { | |
739 | unsigned int ret; | |
740 | spin_lock(&sbi->stat_lock); | |
741 | ret = sbi->total_valid_node_count; | |
742 | spin_unlock(&sbi->stat_lock); | |
743 | return ret; | |
744 | } | |
745 | ||
746 | static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi) | |
747 | { | |
748 | spin_lock(&sbi->stat_lock); | |
5d56b671 | 749 | f2fs_bug_on(sbi->total_valid_inode_count == sbi->total_node_count); |
39a53e0c JK |
750 | sbi->total_valid_inode_count++; |
751 | spin_unlock(&sbi->stat_lock); | |
752 | } | |
753 | ||
754 | static inline int dec_valid_inode_count(struct f2fs_sb_info *sbi) | |
755 | { | |
756 | spin_lock(&sbi->stat_lock); | |
5d56b671 | 757 | f2fs_bug_on(!sbi->total_valid_inode_count); |
39a53e0c JK |
758 | sbi->total_valid_inode_count--; |
759 | spin_unlock(&sbi->stat_lock); | |
760 | return 0; | |
761 | } | |
762 | ||
763 | static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi) | |
764 | { | |
765 | unsigned int ret; | |
766 | spin_lock(&sbi->stat_lock); | |
767 | ret = sbi->total_valid_inode_count; | |
768 | spin_unlock(&sbi->stat_lock); | |
769 | return ret; | |
770 | } | |
771 | ||
772 | static inline void f2fs_put_page(struct page *page, int unlock) | |
773 | { | |
774 | if (!page || IS_ERR(page)) | |
775 | return; | |
776 | ||
777 | if (unlock) { | |
5d56b671 | 778 | f2fs_bug_on(!PageLocked(page)); |
39a53e0c JK |
779 | unlock_page(page); |
780 | } | |
781 | page_cache_release(page); | |
782 | } | |
783 | ||
784 | static inline void f2fs_put_dnode(struct dnode_of_data *dn) | |
785 | { | |
786 | if (dn->node_page) | |
787 | f2fs_put_page(dn->node_page, 1); | |
788 | if (dn->inode_page && dn->node_page != dn->inode_page) | |
789 | f2fs_put_page(dn->inode_page, 0); | |
790 | dn->node_page = NULL; | |
791 | dn->inode_page = NULL; | |
792 | } | |
793 | ||
794 | static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name, | |
795 | size_t size, void (*ctor)(void *)) | |
796 | { | |
797 | return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, ctor); | |
798 | } | |
799 | ||
7bd59381 GZ |
800 | static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep, |
801 | gfp_t flags) | |
802 | { | |
803 | void *entry; | |
804 | retry: | |
805 | entry = kmem_cache_alloc(cachep, flags); | |
806 | if (!entry) { | |
807 | cond_resched(); | |
808 | goto retry; | |
809 | } | |
810 | ||
811 | return entry; | |
812 | } | |
813 | ||
39a53e0c JK |
814 | #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino) |
815 | ||
816 | static inline bool IS_INODE(struct page *page) | |
817 | { | |
45590710 | 818 | struct f2fs_node *p = F2FS_NODE(page); |
39a53e0c JK |
819 | return RAW_IS_INODE(p); |
820 | } | |
821 | ||
822 | static inline __le32 *blkaddr_in_node(struct f2fs_node *node) | |
823 | { | |
824 | return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr; | |
825 | } | |
826 | ||
827 | static inline block_t datablock_addr(struct page *node_page, | |
828 | unsigned int offset) | |
829 | { | |
830 | struct f2fs_node *raw_node; | |
831 | __le32 *addr_array; | |
45590710 | 832 | raw_node = F2FS_NODE(node_page); |
39a53e0c JK |
833 | addr_array = blkaddr_in_node(raw_node); |
834 | return le32_to_cpu(addr_array[offset]); | |
835 | } | |
836 | ||
837 | static inline int f2fs_test_bit(unsigned int nr, char *addr) | |
838 | { | |
839 | int mask; | |
840 | ||
841 | addr += (nr >> 3); | |
842 | mask = 1 << (7 - (nr & 0x07)); | |
843 | return mask & *addr; | |
844 | } | |
845 | ||
846 | static inline int f2fs_set_bit(unsigned int nr, char *addr) | |
847 | { | |
848 | int mask; | |
849 | int ret; | |
850 | ||
851 | addr += (nr >> 3); | |
852 | mask = 1 << (7 - (nr & 0x07)); | |
853 | ret = mask & *addr; | |
854 | *addr |= mask; | |
855 | return ret; | |
856 | } | |
857 | ||
858 | static inline int f2fs_clear_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 | /* used for f2fs_inode_info->flags */ | |
871 | enum { | |
872 | FI_NEW_INODE, /* indicate newly allocated inode */ | |
b3783873 | 873 | FI_DIRTY_INODE, /* indicate inode is dirty or not */ |
39a53e0c JK |
874 | FI_INC_LINK, /* need to increment i_nlink */ |
875 | FI_ACL_MODE, /* indicate acl mode */ | |
876 | FI_NO_ALLOC, /* should not allocate any blocks */ | |
699489bb | 877 | FI_UPDATE_DIR, /* should update inode block for consistency */ |
74d0b917 | 878 | FI_DELAY_IPUT, /* used for the recovery */ |
444c580f | 879 | FI_INLINE_XATTR, /* used for inline xattr */ |
39a53e0c JK |
880 | }; |
881 | ||
882 | static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag) | |
883 | { | |
884 | set_bit(flag, &fi->flags); | |
885 | } | |
886 | ||
887 | static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag) | |
888 | { | |
889 | return test_bit(flag, &fi->flags); | |
890 | } | |
891 | ||
892 | static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag) | |
893 | { | |
894 | clear_bit(flag, &fi->flags); | |
895 | } | |
896 | ||
897 | static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode) | |
898 | { | |
899 | fi->i_acl_mode = mode; | |
900 | set_inode_flag(fi, FI_ACL_MODE); | |
901 | } | |
902 | ||
903 | static inline int cond_clear_inode_flag(struct f2fs_inode_info *fi, int flag) | |
904 | { | |
905 | if (is_inode_flag_set(fi, FI_ACL_MODE)) { | |
906 | clear_inode_flag(fi, FI_ACL_MODE); | |
907 | return 1; | |
908 | } | |
909 | return 0; | |
910 | } | |
911 | ||
444c580f JK |
912 | static inline void get_inline_info(struct f2fs_inode_info *fi, |
913 | struct f2fs_inode *ri) | |
914 | { | |
915 | if (ri->i_inline & F2FS_INLINE_XATTR) | |
916 | set_inode_flag(fi, FI_INLINE_XATTR); | |
917 | } | |
918 | ||
919 | static inline void set_raw_inline(struct f2fs_inode_info *fi, | |
920 | struct f2fs_inode *ri) | |
921 | { | |
922 | ri->i_inline = 0; | |
923 | ||
924 | if (is_inode_flag_set(fi, FI_INLINE_XATTR)) | |
925 | ri->i_inline |= F2FS_INLINE_XATTR; | |
926 | } | |
927 | ||
de93653f JK |
928 | static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi) |
929 | { | |
930 | if (is_inode_flag_set(fi, FI_INLINE_XATTR)) | |
931 | return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS; | |
932 | return DEF_ADDRS_PER_INODE; | |
933 | } | |
934 | ||
65985d93 JK |
935 | static inline void *inline_xattr_addr(struct page *page) |
936 | { | |
937 | struct f2fs_inode *ri; | |
938 | ri = (struct f2fs_inode *)page_address(page); | |
939 | return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE - | |
940 | F2FS_INLINE_XATTR_ADDRS]); | |
941 | } | |
942 | ||
943 | static inline int inline_xattr_size(struct inode *inode) | |
944 | { | |
945 | if (is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR)) | |
946 | return F2FS_INLINE_XATTR_ADDRS << 2; | |
947 | else | |
948 | return 0; | |
949 | } | |
950 | ||
77888c1e JK |
951 | static inline int f2fs_readonly(struct super_block *sb) |
952 | { | |
953 | return sb->s_flags & MS_RDONLY; | |
954 | } | |
955 | ||
39a53e0c JK |
956 | /* |
957 | * file.c | |
958 | */ | |
959 | int f2fs_sync_file(struct file *, loff_t, loff_t, int); | |
960 | void truncate_data_blocks(struct dnode_of_data *); | |
961 | void f2fs_truncate(struct inode *); | |
2d4d9fb5 | 962 | int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *); |
39a53e0c JK |
963 | int f2fs_setattr(struct dentry *, struct iattr *); |
964 | int truncate_hole(struct inode *, pgoff_t, pgoff_t); | |
b292dcab | 965 | int truncate_data_blocks_range(struct dnode_of_data *, int); |
39a53e0c | 966 | long f2fs_ioctl(struct file *, unsigned int, unsigned long); |
e9750824 | 967 | long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long); |
39a53e0c JK |
968 | |
969 | /* | |
970 | * inode.c | |
971 | */ | |
972 | void f2fs_set_inode_flags(struct inode *); | |
39a53e0c | 973 | struct inode *f2fs_iget(struct super_block *, unsigned long); |
4660f9c0 | 974 | int try_to_free_nats(struct f2fs_sb_info *, int); |
39a53e0c | 975 | void update_inode(struct inode *, struct page *); |
39936837 | 976 | int update_inode_page(struct inode *); |
39a53e0c JK |
977 | int f2fs_write_inode(struct inode *, struct writeback_control *); |
978 | void f2fs_evict_inode(struct inode *); | |
979 | ||
980 | /* | |
981 | * namei.c | |
982 | */ | |
983 | struct dentry *f2fs_get_parent(struct dentry *child); | |
984 | ||
985 | /* | |
986 | * dir.c | |
987 | */ | |
988 | struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *, | |
989 | struct page **); | |
990 | struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **); | |
991 | ino_t f2fs_inode_by_name(struct inode *, struct qstr *); | |
992 | void f2fs_set_link(struct inode *, struct f2fs_dir_entry *, | |
993 | struct page *, struct inode *); | |
1cd14caf | 994 | int update_dent_inode(struct inode *, const struct qstr *); |
b7f7a5e0 | 995 | int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *); |
39a53e0c JK |
996 | void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *); |
997 | int f2fs_make_empty(struct inode *, struct inode *); | |
998 | bool f2fs_empty_dir(struct inode *); | |
999 | ||
b7f7a5e0 AV |
1000 | static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode) |
1001 | { | |
1002 | return __f2fs_add_link(dentry->d_parent->d_inode, &dentry->d_name, | |
1003 | inode); | |
1004 | } | |
1005 | ||
39a53e0c JK |
1006 | /* |
1007 | * super.c | |
1008 | */ | |
1009 | int f2fs_sync_fs(struct super_block *, int); | |
a07ef784 NJ |
1010 | extern __printf(3, 4) |
1011 | void f2fs_msg(struct super_block *, const char *, const char *, ...); | |
39a53e0c JK |
1012 | |
1013 | /* | |
1014 | * hash.c | |
1015 | */ | |
9836b8b9 | 1016 | f2fs_hash_t f2fs_dentry_hash(const char *, size_t); |
39a53e0c JK |
1017 | |
1018 | /* | |
1019 | * node.c | |
1020 | */ | |
1021 | struct dnode_of_data; | |
1022 | struct node_info; | |
1023 | ||
1024 | int is_checkpointed_node(struct f2fs_sb_info *, nid_t); | |
1025 | void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *); | |
1026 | int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int); | |
1027 | int truncate_inode_blocks(struct inode *, pgoff_t); | |
4f16fb0f | 1028 | int truncate_xattr_node(struct inode *, struct page *); |
cfe58f9d | 1029 | int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t); |
39a53e0c | 1030 | int remove_inode_page(struct inode *); |
44a83ff6 | 1031 | struct page *new_inode_page(struct inode *, const struct qstr *); |
8ae8f162 | 1032 | struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *); |
39a53e0c JK |
1033 | void ra_node_page(struct f2fs_sb_info *, nid_t); |
1034 | struct page *get_node_page(struct f2fs_sb_info *, pgoff_t); | |
1035 | struct page *get_node_page_ra(struct page *, int); | |
1036 | void sync_inode_page(struct dnode_of_data *); | |
1037 | int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *); | |
1038 | bool alloc_nid(struct f2fs_sb_info *, nid_t *); | |
1039 | void alloc_nid_done(struct f2fs_sb_info *, nid_t); | |
1040 | void alloc_nid_failed(struct f2fs_sb_info *, nid_t); | |
1041 | void recover_node_page(struct f2fs_sb_info *, struct page *, | |
1042 | struct f2fs_summary *, struct node_info *, block_t); | |
1043 | int recover_inode_page(struct f2fs_sb_info *, struct page *); | |
1044 | int restore_node_summary(struct f2fs_sb_info *, unsigned int, | |
1045 | struct f2fs_summary_block *); | |
1046 | void flush_nat_entries(struct f2fs_sb_info *); | |
1047 | int build_node_manager(struct f2fs_sb_info *); | |
1048 | void destroy_node_manager(struct f2fs_sb_info *); | |
6e6093a8 | 1049 | int __init create_node_manager_caches(void); |
39a53e0c JK |
1050 | void destroy_node_manager_caches(void); |
1051 | ||
1052 | /* | |
1053 | * segment.c | |
1054 | */ | |
1055 | void f2fs_balance_fs(struct f2fs_sb_info *); | |
4660f9c0 | 1056 | void f2fs_balance_fs_bg(struct f2fs_sb_info *); |
39a53e0c | 1057 | void invalidate_blocks(struct f2fs_sb_info *, block_t); |
39a53e0c JK |
1058 | void clear_prefree_segments(struct f2fs_sb_info *); |
1059 | int npages_for_summary_flush(struct f2fs_sb_info *); | |
1060 | void allocate_new_segments(struct f2fs_sb_info *); | |
1061 | struct page *get_sum_page(struct f2fs_sb_info *, unsigned int); | |
3cd8a239 | 1062 | struct bio *f2fs_bio_alloc(struct block_device *, int); |
a569469e JX |
1063 | void f2fs_submit_bio(struct f2fs_sb_info *, enum page_type, bool); |
1064 | void f2fs_wait_on_page_writeback(struct page *, enum page_type, bool); | |
577e3495 | 1065 | void write_meta_page(struct f2fs_sb_info *, struct page *); |
39a53e0c JK |
1066 | void write_node_page(struct f2fs_sb_info *, struct page *, unsigned int, |
1067 | block_t, block_t *); | |
1068 | void write_data_page(struct inode *, struct page *, struct dnode_of_data*, | |
1069 | block_t, block_t *); | |
1070 | void rewrite_data_page(struct f2fs_sb_info *, struct page *, block_t); | |
1071 | void recover_data_page(struct f2fs_sb_info *, struct page *, | |
1072 | struct f2fs_summary *, block_t, block_t); | |
1073 | void rewrite_node_page(struct f2fs_sb_info *, struct page *, | |
1074 | struct f2fs_summary *, block_t, block_t); | |
1075 | void write_data_summaries(struct f2fs_sb_info *, block_t); | |
1076 | void write_node_summaries(struct f2fs_sb_info *, block_t); | |
1077 | int lookup_journal_in_cursum(struct f2fs_summary_block *, | |
1078 | int, unsigned int, int); | |
1079 | void flush_sit_entries(struct f2fs_sb_info *); | |
1080 | int build_segment_manager(struct f2fs_sb_info *); | |
39a53e0c JK |
1081 | void destroy_segment_manager(struct f2fs_sb_info *); |
1082 | ||
1083 | /* | |
1084 | * checkpoint.c | |
1085 | */ | |
1086 | struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t); | |
1087 | struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t); | |
1088 | long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long); | |
cbd56e7d JK |
1089 | int acquire_orphan_inode(struct f2fs_sb_info *); |
1090 | void release_orphan_inode(struct f2fs_sb_info *); | |
39a53e0c JK |
1091 | void add_orphan_inode(struct f2fs_sb_info *, nid_t); |
1092 | void remove_orphan_inode(struct f2fs_sb_info *, nid_t); | |
1093 | int recover_orphan_inodes(struct f2fs_sb_info *); | |
1094 | int get_valid_checkpoint(struct f2fs_sb_info *); | |
1095 | void set_dirty_dir_page(struct inode *, struct page *); | |
5deb8267 | 1096 | void add_dirty_dir_inode(struct inode *); |
39a53e0c | 1097 | void remove_dirty_dir_inode(struct inode *); |
74d0b917 | 1098 | struct inode *check_dirty_dir_inode(struct f2fs_sb_info *, nid_t); |
39a53e0c | 1099 | void sync_dirty_dir_inodes(struct f2fs_sb_info *); |
43727527 | 1100 | void write_checkpoint(struct f2fs_sb_info *, bool); |
39a53e0c | 1101 | void init_orphan_info(struct f2fs_sb_info *); |
6e6093a8 | 1102 | int __init create_checkpoint_caches(void); |
39a53e0c JK |
1103 | void destroy_checkpoint_caches(void); |
1104 | ||
1105 | /* | |
1106 | * data.c | |
1107 | */ | |
1108 | int reserve_new_block(struct dnode_of_data *); | |
1109 | void update_extent_cache(block_t, struct dnode_of_data *); | |
c718379b | 1110 | struct page *find_data_page(struct inode *, pgoff_t, bool); |
39a53e0c | 1111 | struct page *get_lock_data_page(struct inode *, pgoff_t); |
64aa7ed9 | 1112 | struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool); |
39a53e0c JK |
1113 | int f2fs_readpage(struct f2fs_sb_info *, struct page *, block_t, int); |
1114 | int do_write_data_page(struct page *); | |
1115 | ||
1116 | /* | |
1117 | * gc.c | |
1118 | */ | |
1119 | int start_gc_thread(struct f2fs_sb_info *); | |
1120 | void stop_gc_thread(struct f2fs_sb_info *); | |
de93653f | 1121 | block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *); |
408e9375 | 1122 | int f2fs_gc(struct f2fs_sb_info *); |
39a53e0c | 1123 | void build_gc_manager(struct f2fs_sb_info *); |
6e6093a8 | 1124 | int __init create_gc_caches(void); |
39a53e0c JK |
1125 | void destroy_gc_caches(void); |
1126 | ||
1127 | /* | |
1128 | * recovery.c | |
1129 | */ | |
6ead1142 | 1130 | int recover_fsync_data(struct f2fs_sb_info *); |
39a53e0c JK |
1131 | bool space_for_roll_forward(struct f2fs_sb_info *); |
1132 | ||
1133 | /* | |
1134 | * debug.c | |
1135 | */ | |
1136 | #ifdef CONFIG_F2FS_STAT_FS | |
1137 | struct f2fs_stat_info { | |
1138 | struct list_head stat_list; | |
1139 | struct f2fs_sb_info *sbi; | |
1140 | struct mutex stat_lock; | |
1141 | int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs; | |
1142 | int main_area_segs, main_area_sections, main_area_zones; | |
1143 | int hit_ext, total_ext; | |
1144 | int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta; | |
1145 | int nats, sits, fnids; | |
1146 | int total_count, utilization; | |
1147 | int bg_gc; | |
1148 | unsigned int valid_count, valid_node_count, valid_inode_count; | |
1149 | unsigned int bimodal, avg_vblocks; | |
1150 | int util_free, util_valid, util_invalid; | |
1151 | int rsvd_segs, overp_segs; | |
1152 | int dirty_count, node_pages, meta_pages; | |
1153 | int prefree_count, call_count; | |
1154 | int tot_segs, node_segs, data_segs, free_segs, free_secs; | |
1155 | int tot_blks, data_blks, node_blks; | |
1156 | int curseg[NR_CURSEG_TYPE]; | |
1157 | int cursec[NR_CURSEG_TYPE]; | |
1158 | int curzone[NR_CURSEG_TYPE]; | |
1159 | ||
1160 | unsigned int segment_count[2]; | |
1161 | unsigned int block_count[2]; | |
1162 | unsigned base_mem, cache_mem; | |
1163 | }; | |
1164 | ||
963d4f7d GZ |
1165 | static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi) |
1166 | { | |
1167 | return (struct f2fs_stat_info*)sbi->stat_info; | |
1168 | } | |
1169 | ||
dcdfff65 JK |
1170 | #define stat_inc_call_count(si) ((si)->call_count++) |
1171 | #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++) | |
1172 | #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++) | |
1173 | #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--) | |
1174 | #define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++) | |
1175 | #define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++) | |
1176 | #define stat_inc_seg_type(sbi, curseg) \ | |
1177 | ((sbi)->segment_count[(curseg)->alloc_type]++) | |
1178 | #define stat_inc_block_count(sbi, curseg) \ | |
1179 | ((sbi)->block_count[(curseg)->alloc_type]++) | |
39a53e0c JK |
1180 | |
1181 | #define stat_inc_seg_count(sbi, type) \ | |
1182 | do { \ | |
963d4f7d | 1183 | struct f2fs_stat_info *si = F2FS_STAT(sbi); \ |
39a53e0c JK |
1184 | (si)->tot_segs++; \ |
1185 | if (type == SUM_TYPE_DATA) \ | |
1186 | si->data_segs++; \ | |
1187 | else \ | |
1188 | si->node_segs++; \ | |
1189 | } while (0) | |
1190 | ||
1191 | #define stat_inc_tot_blk_count(si, blks) \ | |
1192 | (si->tot_blks += (blks)) | |
1193 | ||
1194 | #define stat_inc_data_blk_count(sbi, blks) \ | |
1195 | do { \ | |
963d4f7d | 1196 | struct f2fs_stat_info *si = F2FS_STAT(sbi); \ |
39a53e0c JK |
1197 | stat_inc_tot_blk_count(si, blks); \ |
1198 | si->data_blks += (blks); \ | |
1199 | } while (0) | |
1200 | ||
1201 | #define stat_inc_node_blk_count(sbi, blks) \ | |
1202 | do { \ | |
963d4f7d | 1203 | struct f2fs_stat_info *si = F2FS_STAT(sbi); \ |
39a53e0c JK |
1204 | stat_inc_tot_blk_count(si, blks); \ |
1205 | si->node_blks += (blks); \ | |
1206 | } while (0) | |
1207 | ||
1208 | int f2fs_build_stats(struct f2fs_sb_info *); | |
1209 | void f2fs_destroy_stats(struct f2fs_sb_info *); | |
6e6093a8 | 1210 | void __init f2fs_create_root_stats(void); |
4589d25d | 1211 | void f2fs_destroy_root_stats(void); |
39a53e0c JK |
1212 | #else |
1213 | #define stat_inc_call_count(si) | |
dcdfff65 JK |
1214 | #define stat_inc_bggc_count(si) |
1215 | #define stat_inc_dirty_dir(sbi) | |
1216 | #define stat_dec_dirty_dir(sbi) | |
1217 | #define stat_inc_total_hit(sb) | |
1218 | #define stat_inc_read_hit(sb) | |
1219 | #define stat_inc_seg_type(sbi, curseg) | |
1220 | #define stat_inc_block_count(sbi, curseg) | |
39a53e0c JK |
1221 | #define stat_inc_seg_count(si, type) |
1222 | #define stat_inc_tot_blk_count(si, blks) | |
1223 | #define stat_inc_data_blk_count(si, blks) | |
1224 | #define stat_inc_node_blk_count(sbi, blks) | |
1225 | ||
1226 | static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; } | |
1227 | static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { } | |
6e6093a8 | 1228 | static inline void __init f2fs_create_root_stats(void) { } |
4589d25d | 1229 | static inline void f2fs_destroy_root_stats(void) { } |
39a53e0c JK |
1230 | #endif |
1231 | ||
1232 | extern const struct file_operations f2fs_dir_operations; | |
1233 | extern const struct file_operations f2fs_file_operations; | |
1234 | extern const struct inode_operations f2fs_file_inode_operations; | |
1235 | extern const struct address_space_operations f2fs_dblock_aops; | |
1236 | extern const struct address_space_operations f2fs_node_aops; | |
1237 | extern const struct address_space_operations f2fs_meta_aops; | |
1238 | extern const struct inode_operations f2fs_dir_inode_operations; | |
1239 | extern const struct inode_operations f2fs_symlink_inode_operations; | |
1240 | extern const struct inode_operations f2fs_special_inode_operations; | |
1241 | #endif |