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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 */ | |
c11abd1a JK |
172 | #define F2FS_MIN_EXTENT_LEN 16 /* minimum extent length */ |
173 | ||
39a53e0c JK |
174 | struct extent_info { |
175 | rwlock_t ext_lock; /* rwlock for consistency */ | |
176 | unsigned int fofs; /* start offset in a file */ | |
177 | u32 blk_addr; /* start block address of the extent */ | |
111d2495 | 178 | unsigned int len; /* length of the extent */ |
39a53e0c JK |
179 | }; |
180 | ||
181 | /* | |
182 | * i_advise uses FADVISE_XXX_BIT. We can add additional hints later. | |
183 | */ | |
184 | #define FADVISE_COLD_BIT 0x01 | |
354a3399 | 185 | #define FADVISE_LOST_PINO_BIT 0x02 |
39a53e0c JK |
186 | |
187 | struct f2fs_inode_info { | |
188 | struct inode vfs_inode; /* serve a vfs inode */ | |
189 | unsigned long i_flags; /* keep an inode flags for ioctl */ | |
190 | unsigned char i_advise; /* use to give file attribute hints */ | |
191 | unsigned int i_current_depth; /* use only in directory structure */ | |
6666e6aa | 192 | unsigned int i_pino; /* parent inode number */ |
39a53e0c JK |
193 | umode_t i_acl_mode; /* keep file acl mode temporarily */ |
194 | ||
195 | /* Use below internally in f2fs*/ | |
196 | unsigned long flags; /* use to pass per-file flags */ | |
39a53e0c JK |
197 | atomic_t dirty_dents; /* # of dirty dentry pages */ |
198 | f2fs_hash_t chash; /* hash value of given file name */ | |
199 | unsigned int clevel; /* maximum level of given file name */ | |
200 | nid_t i_xattr_nid; /* node id that contains xattrs */ | |
e518ff81 | 201 | unsigned long long xattr_ver; /* cp version of xattr modification */ |
39a53e0c JK |
202 | struct extent_info ext; /* in-memory extent cache entry */ |
203 | }; | |
204 | ||
205 | static inline void get_extent_info(struct extent_info *ext, | |
206 | struct f2fs_extent i_ext) | |
207 | { | |
208 | write_lock(&ext->ext_lock); | |
209 | ext->fofs = le32_to_cpu(i_ext.fofs); | |
210 | ext->blk_addr = le32_to_cpu(i_ext.blk_addr); | |
211 | ext->len = le32_to_cpu(i_ext.len); | |
212 | write_unlock(&ext->ext_lock); | |
213 | } | |
214 | ||
215 | static inline void set_raw_extent(struct extent_info *ext, | |
216 | struct f2fs_extent *i_ext) | |
217 | { | |
218 | read_lock(&ext->ext_lock); | |
219 | i_ext->fofs = cpu_to_le32(ext->fofs); | |
220 | i_ext->blk_addr = cpu_to_le32(ext->blk_addr); | |
221 | i_ext->len = cpu_to_le32(ext->len); | |
222 | read_unlock(&ext->ext_lock); | |
223 | } | |
224 | ||
225 | struct f2fs_nm_info { | |
226 | block_t nat_blkaddr; /* base disk address of NAT */ | |
227 | nid_t max_nid; /* maximum possible node ids */ | |
39a53e0c JK |
228 | nid_t next_scan_nid; /* the next nid to be scanned */ |
229 | ||
230 | /* NAT cache management */ | |
231 | struct radix_tree_root nat_root;/* root of the nat entry cache */ | |
232 | rwlock_t nat_tree_lock; /* protect nat_tree_lock */ | |
233 | unsigned int nat_cnt; /* the # of cached nat entries */ | |
234 | struct list_head nat_entries; /* cached nat entry list (clean) */ | |
235 | struct list_head dirty_nat_entries; /* cached nat entry list (dirty) */ | |
236 | ||
237 | /* free node ids management */ | |
238 | struct list_head free_nid_list; /* a list for free nids */ | |
239 | spinlock_t free_nid_list_lock; /* protect free nid list */ | |
240 | unsigned int fcnt; /* the number of free node id */ | |
241 | struct mutex build_lock; /* lock for build free nids */ | |
242 | ||
243 | /* for checkpoint */ | |
244 | char *nat_bitmap; /* NAT bitmap pointer */ | |
245 | int bitmap_size; /* bitmap size */ | |
246 | }; | |
247 | ||
248 | /* | |
249 | * this structure is used as one of function parameters. | |
250 | * all the information are dedicated to a given direct node block determined | |
251 | * by the data offset in a file. | |
252 | */ | |
253 | struct dnode_of_data { | |
254 | struct inode *inode; /* vfs inode pointer */ | |
255 | struct page *inode_page; /* its inode page, NULL is possible */ | |
256 | struct page *node_page; /* cached direct node page */ | |
257 | nid_t nid; /* node id of the direct node block */ | |
258 | unsigned int ofs_in_node; /* data offset in the node page */ | |
259 | bool inode_page_locked; /* inode page is locked or not */ | |
260 | block_t data_blkaddr; /* block address of the node block */ | |
261 | }; | |
262 | ||
263 | static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode, | |
264 | struct page *ipage, struct page *npage, nid_t nid) | |
265 | { | |
d66d1f76 | 266 | memset(dn, 0, sizeof(*dn)); |
39a53e0c JK |
267 | dn->inode = inode; |
268 | dn->inode_page = ipage; | |
269 | dn->node_page = npage; | |
270 | dn->nid = nid; | |
39a53e0c JK |
271 | } |
272 | ||
273 | /* | |
274 | * For SIT manager | |
275 | * | |
276 | * By default, there are 6 active log areas across the whole main area. | |
277 | * When considering hot and cold data separation to reduce cleaning overhead, | |
278 | * we split 3 for data logs and 3 for node logs as hot, warm, and cold types, | |
279 | * respectively. | |
280 | * In the current design, you should not change the numbers intentionally. | |
281 | * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6 | |
282 | * logs individually according to the underlying devices. (default: 6) | |
283 | * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for | |
284 | * data and 8 for node logs. | |
285 | */ | |
286 | #define NR_CURSEG_DATA_TYPE (3) | |
287 | #define NR_CURSEG_NODE_TYPE (3) | |
288 | #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE) | |
289 | ||
290 | enum { | |
291 | CURSEG_HOT_DATA = 0, /* directory entry blocks */ | |
292 | CURSEG_WARM_DATA, /* data blocks */ | |
293 | CURSEG_COLD_DATA, /* multimedia or GCed data blocks */ | |
294 | CURSEG_HOT_NODE, /* direct node blocks of directory files */ | |
295 | CURSEG_WARM_NODE, /* direct node blocks of normal files */ | |
296 | CURSEG_COLD_NODE, /* indirect node blocks */ | |
297 | NO_CHECK_TYPE | |
298 | }; | |
299 | ||
300 | struct f2fs_sm_info { | |
301 | struct sit_info *sit_info; /* whole segment information */ | |
302 | struct free_segmap_info *free_info; /* free segment information */ | |
303 | struct dirty_seglist_info *dirty_info; /* dirty segment information */ | |
304 | struct curseg_info *curseg_array; /* active segment information */ | |
305 | ||
306 | struct list_head wblist_head; /* list of under-writeback pages */ | |
307 | spinlock_t wblist_lock; /* lock for checkpoint */ | |
308 | ||
309 | block_t seg0_blkaddr; /* block address of 0'th segment */ | |
310 | block_t main_blkaddr; /* start block address of main area */ | |
311 | block_t ssa_blkaddr; /* start block address of SSA area */ | |
312 | ||
313 | unsigned int segment_count; /* total # of segments */ | |
314 | unsigned int main_segments; /* # of segments in main area */ | |
315 | unsigned int reserved_segments; /* # of reserved segments */ | |
316 | unsigned int ovp_segments; /* # of overprovision segments */ | |
81eb8d6e JK |
317 | |
318 | /* a threshold to reclaim prefree segments */ | |
319 | unsigned int rec_prefree_segments; | |
7fd9e544 JK |
320 | |
321 | /* for small discard management */ | |
322 | struct list_head discard_list; /* 4KB discard list */ | |
323 | int nr_discards; /* # of discards in the list */ | |
324 | int max_discards; /* max. discards to be issued */ | |
39a53e0c JK |
325 | }; |
326 | ||
39a53e0c JK |
327 | /* |
328 | * For superblock | |
329 | */ | |
330 | /* | |
331 | * COUNT_TYPE for monitoring | |
332 | * | |
333 | * f2fs monitors the number of several block types such as on-writeback, | |
334 | * dirty dentry blocks, dirty node blocks, and dirty meta blocks. | |
335 | */ | |
336 | enum count_type { | |
337 | F2FS_WRITEBACK, | |
338 | F2FS_DIRTY_DENTS, | |
339 | F2FS_DIRTY_NODES, | |
340 | F2FS_DIRTY_META, | |
341 | NR_COUNT_TYPE, | |
342 | }; | |
343 | ||
39a53e0c JK |
344 | /* |
345 | * The below are the page types of bios used in submti_bio(). | |
346 | * The available types are: | |
347 | * DATA User data pages. It operates as async mode. | |
348 | * NODE Node pages. It operates as async mode. | |
349 | * META FS metadata pages such as SIT, NAT, CP. | |
350 | * NR_PAGE_TYPE The number of page types. | |
351 | * META_FLUSH Make sure the previous pages are written | |
352 | * with waiting the bio's completion | |
353 | * ... Only can be used with META. | |
354 | */ | |
7d5e5109 | 355 | #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type)) |
39a53e0c JK |
356 | enum page_type { |
357 | DATA, | |
358 | NODE, | |
359 | META, | |
360 | NR_PAGE_TYPE, | |
361 | META_FLUSH, | |
362 | }; | |
363 | ||
364 | struct f2fs_sb_info { | |
365 | struct super_block *sb; /* pointer to VFS super block */ | |
5e176d54 | 366 | struct proc_dir_entry *s_proc; /* proc entry */ |
39a53e0c JK |
367 | struct buffer_head *raw_super_buf; /* buffer head of raw sb */ |
368 | struct f2fs_super_block *raw_super; /* raw super block pointer */ | |
369 | int s_dirty; /* dirty flag for checkpoint */ | |
370 | ||
371 | /* for node-related operations */ | |
372 | struct f2fs_nm_info *nm_info; /* node manager */ | |
373 | struct inode *node_inode; /* cache node blocks */ | |
374 | ||
375 | /* for segment-related operations */ | |
376 | struct f2fs_sm_info *sm_info; /* segment manager */ | |
377 | struct bio *bio[NR_PAGE_TYPE]; /* bios to merge */ | |
378 | sector_t last_block_in_bio[NR_PAGE_TYPE]; /* last block number */ | |
971767ca | 379 | struct mutex write_mutex[NR_PAGE_TYPE]; /* mutex for writing IOs */ |
39a53e0c JK |
380 | |
381 | /* for checkpoint */ | |
382 | struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */ | |
383 | struct inode *meta_inode; /* cache meta blocks */ | |
39936837 | 384 | struct mutex cp_mutex; /* checkpoint procedure lock */ |
e479556b | 385 | struct rw_semaphore cp_rwsem; /* blocking FS operations */ |
39936837 | 386 | struct mutex node_write; /* locking node writes */ |
39a53e0c | 387 | struct mutex writepages; /* mutex for writepages() */ |
aabe5136 HL |
388 | bool por_doing; /* recovery is doing or not */ |
389 | bool on_build_free_nids; /* build_free_nids is doing */ | |
fb51b5ef | 390 | wait_queue_head_t cp_wait; |
39a53e0c JK |
391 | |
392 | /* for orphan inode management */ | |
393 | struct list_head orphan_inode_list; /* orphan inode list */ | |
394 | struct mutex orphan_inode_mutex; /* for orphan inode list */ | |
395 | unsigned int n_orphans; /* # of orphan inodes */ | |
396 | ||
397 | /* for directory inode management */ | |
398 | struct list_head dir_inode_list; /* dir inode list */ | |
399 | spinlock_t dir_inode_lock; /* for dir inode list lock */ | |
39a53e0c JK |
400 | |
401 | /* basic file system units */ | |
402 | unsigned int log_sectors_per_block; /* log2 sectors per block */ | |
403 | unsigned int log_blocksize; /* log2 block size */ | |
404 | unsigned int blocksize; /* block size */ | |
405 | unsigned int root_ino_num; /* root inode number*/ | |
406 | unsigned int node_ino_num; /* node inode number*/ | |
407 | unsigned int meta_ino_num; /* meta inode number*/ | |
408 | unsigned int log_blocks_per_seg; /* log2 blocks per segment */ | |
409 | unsigned int blocks_per_seg; /* blocks per segment */ | |
410 | unsigned int segs_per_sec; /* segments per section */ | |
411 | unsigned int secs_per_zone; /* sections per zone */ | |
412 | unsigned int total_sections; /* total section count */ | |
413 | unsigned int total_node_count; /* total node block count */ | |
414 | unsigned int total_valid_node_count; /* valid node block count */ | |
415 | unsigned int total_valid_inode_count; /* valid inode count */ | |
416 | int active_logs; /* # of active logs */ | |
417 | ||
418 | block_t user_block_count; /* # of user blocks */ | |
419 | block_t total_valid_block_count; /* # of valid blocks */ | |
420 | block_t alloc_valid_block_count; /* # of allocated blocks */ | |
421 | block_t last_valid_block_count; /* for recovery */ | |
422 | u32 s_next_generation; /* for NFS support */ | |
423 | atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */ | |
424 | ||
425 | struct f2fs_mount_info mount_opt; /* mount options */ | |
426 | ||
427 | /* for cleaning operations */ | |
428 | struct mutex gc_mutex; /* mutex for GC */ | |
429 | struct f2fs_gc_kthread *gc_thread; /* GC thread */ | |
5ec4e49f | 430 | unsigned int cur_victim_sec; /* current victim section num */ |
39a53e0c JK |
431 | |
432 | /* | |
433 | * for stat information. | |
434 | * one is for the LFS mode, and the other is for the SSR mode. | |
435 | */ | |
35b09d82 | 436 | #ifdef CONFIG_F2FS_STAT_FS |
39a53e0c JK |
437 | struct f2fs_stat_info *stat_info; /* FS status information */ |
438 | unsigned int segment_count[2]; /* # of allocated segments */ | |
439 | unsigned int block_count[2]; /* # of allocated blocks */ | |
39a53e0c JK |
440 | int total_hit_ext, read_hit_ext; /* extent cache hit ratio */ |
441 | int bg_gc; /* background gc calls */ | |
35b09d82 NJ |
442 | unsigned int n_dirty_dirs; /* # of dir inodes */ |
443 | #endif | |
444 | unsigned int last_victim[2]; /* last victim segment # */ | |
39a53e0c | 445 | spinlock_t stat_lock; /* lock for stat operations */ |
b59d0bae NJ |
446 | |
447 | /* For sysfs suppport */ | |
448 | struct kobject s_kobj; | |
449 | struct completion s_kobj_unregister; | |
39a53e0c JK |
450 | }; |
451 | ||
452 | /* | |
453 | * Inline functions | |
454 | */ | |
455 | static inline struct f2fs_inode_info *F2FS_I(struct inode *inode) | |
456 | { | |
457 | return container_of(inode, struct f2fs_inode_info, vfs_inode); | |
458 | } | |
459 | ||
460 | static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb) | |
461 | { | |
462 | return sb->s_fs_info; | |
463 | } | |
464 | ||
465 | static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi) | |
466 | { | |
467 | return (struct f2fs_super_block *)(sbi->raw_super); | |
468 | } | |
469 | ||
470 | static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi) | |
471 | { | |
472 | return (struct f2fs_checkpoint *)(sbi->ckpt); | |
473 | } | |
474 | ||
45590710 GZ |
475 | static inline struct f2fs_node *F2FS_NODE(struct page *page) |
476 | { | |
477 | return (struct f2fs_node *)page_address(page); | |
478 | } | |
479 | ||
39a53e0c JK |
480 | static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi) |
481 | { | |
482 | return (struct f2fs_nm_info *)(sbi->nm_info); | |
483 | } | |
484 | ||
485 | static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi) | |
486 | { | |
487 | return (struct f2fs_sm_info *)(sbi->sm_info); | |
488 | } | |
489 | ||
490 | static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi) | |
491 | { | |
492 | return (struct sit_info *)(SM_I(sbi)->sit_info); | |
493 | } | |
494 | ||
495 | static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi) | |
496 | { | |
497 | return (struct free_segmap_info *)(SM_I(sbi)->free_info); | |
498 | } | |
499 | ||
500 | static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi) | |
501 | { | |
502 | return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info); | |
503 | } | |
504 | ||
505 | static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info *sbi) | |
506 | { | |
507 | sbi->s_dirty = 1; | |
508 | } | |
509 | ||
510 | static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info *sbi) | |
511 | { | |
512 | sbi->s_dirty = 0; | |
513 | } | |
514 | ||
d71b5564 JK |
515 | static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp) |
516 | { | |
517 | return le64_to_cpu(cp->checkpoint_ver); | |
518 | } | |
519 | ||
25ca923b JK |
520 | static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) |
521 | { | |
522 | unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); | |
523 | return ckpt_flags & f; | |
524 | } | |
525 | ||
526 | static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) | |
527 | { | |
528 | unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); | |
529 | ckpt_flags |= f; | |
530 | cp->ckpt_flags = cpu_to_le32(ckpt_flags); | |
531 | } | |
532 | ||
533 | static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) | |
534 | { | |
535 | unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); | |
536 | ckpt_flags &= (~f); | |
537 | cp->ckpt_flags = cpu_to_le32(ckpt_flags); | |
538 | } | |
539 | ||
e479556b | 540 | static inline void f2fs_lock_op(struct f2fs_sb_info *sbi) |
39936837 | 541 | { |
e479556b | 542 | down_read(&sbi->cp_rwsem); |
39936837 JK |
543 | } |
544 | ||
e479556b | 545 | static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi) |
39a53e0c | 546 | { |
e479556b | 547 | up_read(&sbi->cp_rwsem); |
39a53e0c JK |
548 | } |
549 | ||
e479556b | 550 | static inline void f2fs_lock_all(struct f2fs_sb_info *sbi) |
39a53e0c | 551 | { |
e479556b | 552 | down_write_nest_lock(&sbi->cp_rwsem, &sbi->cp_mutex); |
39936837 JK |
553 | } |
554 | ||
e479556b | 555 | static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi) |
39936837 | 556 | { |
e479556b | 557 | up_write(&sbi->cp_rwsem); |
39a53e0c JK |
558 | } |
559 | ||
560 | /* | |
561 | * Check whether the given nid is within node id range. | |
562 | */ | |
064e0823 | 563 | static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid) |
39a53e0c | 564 | { |
064e0823 NJ |
565 | WARN_ON((nid >= NM_I(sbi)->max_nid)); |
566 | if (nid >= NM_I(sbi)->max_nid) | |
567 | return -EINVAL; | |
568 | return 0; | |
39a53e0c JK |
569 | } |
570 | ||
571 | #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1 | |
572 | ||
573 | /* | |
574 | * Check whether the inode has blocks or not | |
575 | */ | |
576 | static inline int F2FS_HAS_BLOCKS(struct inode *inode) | |
577 | { | |
578 | if (F2FS_I(inode)->i_xattr_nid) | |
579 | return (inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1); | |
580 | else | |
581 | return (inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS); | |
582 | } | |
583 | ||
584 | static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi, | |
585 | struct inode *inode, blkcnt_t count) | |
586 | { | |
587 | block_t valid_block_count; | |
588 | ||
589 | spin_lock(&sbi->stat_lock); | |
590 | valid_block_count = | |
591 | sbi->total_valid_block_count + (block_t)count; | |
592 | if (valid_block_count > sbi->user_block_count) { | |
593 | spin_unlock(&sbi->stat_lock); | |
594 | return false; | |
595 | } | |
596 | inode->i_blocks += count; | |
597 | sbi->total_valid_block_count = valid_block_count; | |
598 | sbi->alloc_valid_block_count += (block_t)count; | |
599 | spin_unlock(&sbi->stat_lock); | |
600 | return true; | |
601 | } | |
602 | ||
603 | static inline int dec_valid_block_count(struct f2fs_sb_info *sbi, | |
604 | struct inode *inode, | |
605 | blkcnt_t count) | |
606 | { | |
607 | spin_lock(&sbi->stat_lock); | |
5d56b671 JK |
608 | f2fs_bug_on(sbi->total_valid_block_count < (block_t) count); |
609 | f2fs_bug_on(inode->i_blocks < count); | |
39a53e0c JK |
610 | inode->i_blocks -= count; |
611 | sbi->total_valid_block_count -= (block_t)count; | |
612 | spin_unlock(&sbi->stat_lock); | |
613 | return 0; | |
614 | } | |
615 | ||
616 | static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type) | |
617 | { | |
618 | atomic_inc(&sbi->nr_pages[count_type]); | |
619 | F2FS_SET_SB_DIRT(sbi); | |
620 | } | |
621 | ||
622 | static inline void inode_inc_dirty_dents(struct inode *inode) | |
623 | { | |
624 | atomic_inc(&F2FS_I(inode)->dirty_dents); | |
625 | } | |
626 | ||
627 | static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type) | |
628 | { | |
629 | atomic_dec(&sbi->nr_pages[count_type]); | |
630 | } | |
631 | ||
632 | static inline void inode_dec_dirty_dents(struct inode *inode) | |
633 | { | |
634 | atomic_dec(&F2FS_I(inode)->dirty_dents); | |
635 | } | |
636 | ||
637 | static inline int get_pages(struct f2fs_sb_info *sbi, int count_type) | |
638 | { | |
639 | return atomic_read(&sbi->nr_pages[count_type]); | |
640 | } | |
641 | ||
5ac206cf NJ |
642 | static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type) |
643 | { | |
644 | unsigned int pages_per_sec = sbi->segs_per_sec * | |
645 | (1 << sbi->log_blocks_per_seg); | |
646 | return ((get_pages(sbi, block_type) + pages_per_sec - 1) | |
647 | >> sbi->log_blocks_per_seg) / sbi->segs_per_sec; | |
648 | } | |
649 | ||
39a53e0c JK |
650 | static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi) |
651 | { | |
652 | block_t ret; | |
653 | spin_lock(&sbi->stat_lock); | |
654 | ret = sbi->total_valid_block_count; | |
655 | spin_unlock(&sbi->stat_lock); | |
656 | return ret; | |
657 | } | |
658 | ||
659 | static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag) | |
660 | { | |
661 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
662 | ||
663 | /* return NAT or SIT bitmap */ | |
664 | if (flag == NAT_BITMAP) | |
665 | return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize); | |
666 | else if (flag == SIT_BITMAP) | |
667 | return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize); | |
668 | ||
669 | return 0; | |
670 | } | |
671 | ||
672 | static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag) | |
673 | { | |
674 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
25ca923b JK |
675 | int offset = (flag == NAT_BITMAP) ? |
676 | le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0; | |
39a53e0c JK |
677 | return &ckpt->sit_nat_version_bitmap + offset; |
678 | } | |
679 | ||
680 | static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi) | |
681 | { | |
682 | block_t start_addr; | |
683 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
d71b5564 | 684 | unsigned long long ckpt_version = cur_cp_version(ckpt); |
39a53e0c | 685 | |
25ca923b | 686 | start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr); |
39a53e0c JK |
687 | |
688 | /* | |
689 | * odd numbered checkpoint should at cp segment 0 | |
690 | * and even segent must be at cp segment 1 | |
691 | */ | |
692 | if (!(ckpt_version & 1)) | |
693 | start_addr += sbi->blocks_per_seg; | |
694 | ||
695 | return start_addr; | |
696 | } | |
697 | ||
698 | static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi) | |
699 | { | |
700 | return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum); | |
701 | } | |
702 | ||
703 | static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi, | |
704 | struct inode *inode, | |
705 | unsigned int count) | |
706 | { | |
707 | block_t valid_block_count; | |
708 | unsigned int valid_node_count; | |
709 | ||
710 | spin_lock(&sbi->stat_lock); | |
711 | ||
712 | valid_block_count = sbi->total_valid_block_count + (block_t)count; | |
713 | sbi->alloc_valid_block_count += (block_t)count; | |
714 | valid_node_count = sbi->total_valid_node_count + count; | |
715 | ||
716 | if (valid_block_count > sbi->user_block_count) { | |
717 | spin_unlock(&sbi->stat_lock); | |
718 | return false; | |
719 | } | |
720 | ||
721 | if (valid_node_count > sbi->total_node_count) { | |
722 | spin_unlock(&sbi->stat_lock); | |
723 | return false; | |
724 | } | |
725 | ||
726 | if (inode) | |
727 | inode->i_blocks += count; | |
728 | sbi->total_valid_node_count = valid_node_count; | |
729 | sbi->total_valid_block_count = valid_block_count; | |
730 | spin_unlock(&sbi->stat_lock); | |
731 | ||
732 | return true; | |
733 | } | |
734 | ||
735 | static inline void dec_valid_node_count(struct f2fs_sb_info *sbi, | |
736 | struct inode *inode, | |
737 | unsigned int count) | |
738 | { | |
739 | spin_lock(&sbi->stat_lock); | |
740 | ||
5d56b671 JK |
741 | f2fs_bug_on(sbi->total_valid_block_count < count); |
742 | f2fs_bug_on(sbi->total_valid_node_count < count); | |
743 | f2fs_bug_on(inode->i_blocks < count); | |
39a53e0c JK |
744 | |
745 | inode->i_blocks -= count; | |
746 | sbi->total_valid_node_count -= count; | |
747 | sbi->total_valid_block_count -= (block_t)count; | |
748 | ||
749 | spin_unlock(&sbi->stat_lock); | |
750 | } | |
751 | ||
752 | static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi) | |
753 | { | |
754 | unsigned int ret; | |
755 | spin_lock(&sbi->stat_lock); | |
756 | ret = sbi->total_valid_node_count; | |
757 | spin_unlock(&sbi->stat_lock); | |
758 | return ret; | |
759 | } | |
760 | ||
761 | static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi) | |
762 | { | |
763 | spin_lock(&sbi->stat_lock); | |
5d56b671 | 764 | f2fs_bug_on(sbi->total_valid_inode_count == sbi->total_node_count); |
39a53e0c JK |
765 | sbi->total_valid_inode_count++; |
766 | spin_unlock(&sbi->stat_lock); | |
767 | } | |
768 | ||
769 | static inline int dec_valid_inode_count(struct f2fs_sb_info *sbi) | |
770 | { | |
771 | spin_lock(&sbi->stat_lock); | |
5d56b671 | 772 | f2fs_bug_on(!sbi->total_valid_inode_count); |
39a53e0c JK |
773 | sbi->total_valid_inode_count--; |
774 | spin_unlock(&sbi->stat_lock); | |
775 | return 0; | |
776 | } | |
777 | ||
778 | static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi) | |
779 | { | |
780 | unsigned int ret; | |
781 | spin_lock(&sbi->stat_lock); | |
782 | ret = sbi->total_valid_inode_count; | |
783 | spin_unlock(&sbi->stat_lock); | |
784 | return ret; | |
785 | } | |
786 | ||
787 | static inline void f2fs_put_page(struct page *page, int unlock) | |
788 | { | |
789 | if (!page || IS_ERR(page)) | |
790 | return; | |
791 | ||
792 | if (unlock) { | |
5d56b671 | 793 | f2fs_bug_on(!PageLocked(page)); |
39a53e0c JK |
794 | unlock_page(page); |
795 | } | |
796 | page_cache_release(page); | |
797 | } | |
798 | ||
799 | static inline void f2fs_put_dnode(struct dnode_of_data *dn) | |
800 | { | |
801 | if (dn->node_page) | |
802 | f2fs_put_page(dn->node_page, 1); | |
803 | if (dn->inode_page && dn->node_page != dn->inode_page) | |
804 | f2fs_put_page(dn->inode_page, 0); | |
805 | dn->node_page = NULL; | |
806 | dn->inode_page = NULL; | |
807 | } | |
808 | ||
809 | static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name, | |
810 | size_t size, void (*ctor)(void *)) | |
811 | { | |
812 | return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, ctor); | |
813 | } | |
814 | ||
7bd59381 GZ |
815 | static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep, |
816 | gfp_t flags) | |
817 | { | |
818 | void *entry; | |
819 | retry: | |
820 | entry = kmem_cache_alloc(cachep, flags); | |
821 | if (!entry) { | |
822 | cond_resched(); | |
823 | goto retry; | |
824 | } | |
825 | ||
826 | return entry; | |
827 | } | |
828 | ||
39a53e0c JK |
829 | #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino) |
830 | ||
831 | static inline bool IS_INODE(struct page *page) | |
832 | { | |
45590710 | 833 | struct f2fs_node *p = F2FS_NODE(page); |
39a53e0c JK |
834 | return RAW_IS_INODE(p); |
835 | } | |
836 | ||
837 | static inline __le32 *blkaddr_in_node(struct f2fs_node *node) | |
838 | { | |
839 | return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr; | |
840 | } | |
841 | ||
842 | static inline block_t datablock_addr(struct page *node_page, | |
843 | unsigned int offset) | |
844 | { | |
845 | struct f2fs_node *raw_node; | |
846 | __le32 *addr_array; | |
45590710 | 847 | raw_node = F2FS_NODE(node_page); |
39a53e0c JK |
848 | addr_array = blkaddr_in_node(raw_node); |
849 | return le32_to_cpu(addr_array[offset]); | |
850 | } | |
851 | ||
852 | static inline int f2fs_test_bit(unsigned int nr, char *addr) | |
853 | { | |
854 | int mask; | |
855 | ||
856 | addr += (nr >> 3); | |
857 | mask = 1 << (7 - (nr & 0x07)); | |
858 | return mask & *addr; | |
859 | } | |
860 | ||
861 | static inline int f2fs_set_bit(unsigned int nr, char *addr) | |
862 | { | |
863 | int mask; | |
864 | int ret; | |
865 | ||
866 | addr += (nr >> 3); | |
867 | mask = 1 << (7 - (nr & 0x07)); | |
868 | ret = mask & *addr; | |
869 | *addr |= mask; | |
870 | return ret; | |
871 | } | |
872 | ||
873 | static inline int f2fs_clear_bit(unsigned int nr, char *addr) | |
874 | { | |
875 | int mask; | |
876 | int ret; | |
877 | ||
878 | addr += (nr >> 3); | |
879 | mask = 1 << (7 - (nr & 0x07)); | |
880 | ret = mask & *addr; | |
881 | *addr &= ~mask; | |
882 | return ret; | |
883 | } | |
884 | ||
885 | /* used for f2fs_inode_info->flags */ | |
886 | enum { | |
887 | FI_NEW_INODE, /* indicate newly allocated inode */ | |
b3783873 | 888 | FI_DIRTY_INODE, /* indicate inode is dirty or not */ |
39a53e0c JK |
889 | FI_INC_LINK, /* need to increment i_nlink */ |
890 | FI_ACL_MODE, /* indicate acl mode */ | |
891 | FI_NO_ALLOC, /* should not allocate any blocks */ | |
699489bb | 892 | FI_UPDATE_DIR, /* should update inode block for consistency */ |
74d0b917 | 893 | FI_DELAY_IPUT, /* used for the recovery */ |
c11abd1a | 894 | FI_NO_EXTENT, /* not to use the extent cache */ |
444c580f | 895 | FI_INLINE_XATTR, /* used for inline xattr */ |
39a53e0c JK |
896 | }; |
897 | ||
898 | static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag) | |
899 | { | |
900 | set_bit(flag, &fi->flags); | |
901 | } | |
902 | ||
903 | static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag) | |
904 | { | |
905 | return test_bit(flag, &fi->flags); | |
906 | } | |
907 | ||
908 | static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag) | |
909 | { | |
910 | clear_bit(flag, &fi->flags); | |
911 | } | |
912 | ||
913 | static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode) | |
914 | { | |
915 | fi->i_acl_mode = mode; | |
916 | set_inode_flag(fi, FI_ACL_MODE); | |
917 | } | |
918 | ||
919 | static inline int cond_clear_inode_flag(struct f2fs_inode_info *fi, int flag) | |
920 | { | |
921 | if (is_inode_flag_set(fi, FI_ACL_MODE)) { | |
922 | clear_inode_flag(fi, FI_ACL_MODE); | |
923 | return 1; | |
924 | } | |
925 | return 0; | |
926 | } | |
927 | ||
444c580f JK |
928 | static inline void get_inline_info(struct f2fs_inode_info *fi, |
929 | struct f2fs_inode *ri) | |
930 | { | |
931 | if (ri->i_inline & F2FS_INLINE_XATTR) | |
932 | set_inode_flag(fi, FI_INLINE_XATTR); | |
933 | } | |
934 | ||
935 | static inline void set_raw_inline(struct f2fs_inode_info *fi, | |
936 | struct f2fs_inode *ri) | |
937 | { | |
938 | ri->i_inline = 0; | |
939 | ||
940 | if (is_inode_flag_set(fi, FI_INLINE_XATTR)) | |
941 | ri->i_inline |= F2FS_INLINE_XATTR; | |
942 | } | |
943 | ||
de93653f JK |
944 | static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi) |
945 | { | |
946 | if (is_inode_flag_set(fi, FI_INLINE_XATTR)) | |
947 | return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS; | |
948 | return DEF_ADDRS_PER_INODE; | |
949 | } | |
950 | ||
65985d93 JK |
951 | static inline void *inline_xattr_addr(struct page *page) |
952 | { | |
953 | struct f2fs_inode *ri; | |
954 | ri = (struct f2fs_inode *)page_address(page); | |
955 | return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE - | |
956 | F2FS_INLINE_XATTR_ADDRS]); | |
957 | } | |
958 | ||
959 | static inline int inline_xattr_size(struct inode *inode) | |
960 | { | |
961 | if (is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR)) | |
962 | return F2FS_INLINE_XATTR_ADDRS << 2; | |
963 | else | |
964 | return 0; | |
965 | } | |
966 | ||
77888c1e JK |
967 | static inline int f2fs_readonly(struct super_block *sb) |
968 | { | |
969 | return sb->s_flags & MS_RDONLY; | |
970 | } | |
971 | ||
39a53e0c JK |
972 | /* |
973 | * file.c | |
974 | */ | |
975 | int f2fs_sync_file(struct file *, loff_t, loff_t, int); | |
976 | void truncate_data_blocks(struct dnode_of_data *); | |
977 | void f2fs_truncate(struct inode *); | |
2d4d9fb5 | 978 | int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *); |
39a53e0c JK |
979 | int f2fs_setattr(struct dentry *, struct iattr *); |
980 | int truncate_hole(struct inode *, pgoff_t, pgoff_t); | |
b292dcab | 981 | int truncate_data_blocks_range(struct dnode_of_data *, int); |
39a53e0c | 982 | long f2fs_ioctl(struct file *, unsigned int, unsigned long); |
e9750824 | 983 | long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long); |
39a53e0c JK |
984 | |
985 | /* | |
986 | * inode.c | |
987 | */ | |
988 | void f2fs_set_inode_flags(struct inode *); | |
39a53e0c | 989 | struct inode *f2fs_iget(struct super_block *, unsigned long); |
4660f9c0 | 990 | int try_to_free_nats(struct f2fs_sb_info *, int); |
39a53e0c | 991 | void update_inode(struct inode *, struct page *); |
39936837 | 992 | int update_inode_page(struct inode *); |
39a53e0c JK |
993 | int f2fs_write_inode(struct inode *, struct writeback_control *); |
994 | void f2fs_evict_inode(struct inode *); | |
995 | ||
996 | /* | |
997 | * namei.c | |
998 | */ | |
999 | struct dentry *f2fs_get_parent(struct dentry *child); | |
1000 | ||
1001 | /* | |
1002 | * dir.c | |
1003 | */ | |
1004 | struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *, | |
1005 | struct page **); | |
1006 | struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **); | |
1007 | ino_t f2fs_inode_by_name(struct inode *, struct qstr *); | |
1008 | void f2fs_set_link(struct inode *, struct f2fs_dir_entry *, | |
1009 | struct page *, struct inode *); | |
1cd14caf | 1010 | int update_dent_inode(struct inode *, const struct qstr *); |
b7f7a5e0 | 1011 | int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *); |
39a53e0c JK |
1012 | void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *); |
1013 | int f2fs_make_empty(struct inode *, struct inode *); | |
1014 | bool f2fs_empty_dir(struct inode *); | |
1015 | ||
b7f7a5e0 AV |
1016 | static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode) |
1017 | { | |
1018 | return __f2fs_add_link(dentry->d_parent->d_inode, &dentry->d_name, | |
1019 | inode); | |
1020 | } | |
1021 | ||
39a53e0c JK |
1022 | /* |
1023 | * super.c | |
1024 | */ | |
1025 | int f2fs_sync_fs(struct super_block *, int); | |
a07ef784 NJ |
1026 | extern __printf(3, 4) |
1027 | void f2fs_msg(struct super_block *, const char *, const char *, ...); | |
39a53e0c JK |
1028 | |
1029 | /* | |
1030 | * hash.c | |
1031 | */ | |
9836b8b9 | 1032 | f2fs_hash_t f2fs_dentry_hash(const char *, size_t); |
39a53e0c JK |
1033 | |
1034 | /* | |
1035 | * node.c | |
1036 | */ | |
1037 | struct dnode_of_data; | |
1038 | struct node_info; | |
1039 | ||
1040 | int is_checkpointed_node(struct f2fs_sb_info *, nid_t); | |
1041 | void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *); | |
1042 | int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int); | |
1043 | int truncate_inode_blocks(struct inode *, pgoff_t); | |
4f16fb0f | 1044 | int truncate_xattr_node(struct inode *, struct page *); |
cfe58f9d | 1045 | int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t); |
39a53e0c | 1046 | int remove_inode_page(struct inode *); |
44a83ff6 | 1047 | struct page *new_inode_page(struct inode *, const struct qstr *); |
8ae8f162 | 1048 | struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *); |
39a53e0c JK |
1049 | void ra_node_page(struct f2fs_sb_info *, nid_t); |
1050 | struct page *get_node_page(struct f2fs_sb_info *, pgoff_t); | |
1051 | struct page *get_node_page_ra(struct page *, int); | |
1052 | void sync_inode_page(struct dnode_of_data *); | |
1053 | int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *); | |
1054 | bool alloc_nid(struct f2fs_sb_info *, nid_t *); | |
1055 | void alloc_nid_done(struct f2fs_sb_info *, nid_t); | |
1056 | void alloc_nid_failed(struct f2fs_sb_info *, nid_t); | |
1057 | void recover_node_page(struct f2fs_sb_info *, struct page *, | |
1058 | struct f2fs_summary *, struct node_info *, block_t); | |
1059 | int recover_inode_page(struct f2fs_sb_info *, struct page *); | |
1060 | int restore_node_summary(struct f2fs_sb_info *, unsigned int, | |
1061 | struct f2fs_summary_block *); | |
1062 | void flush_nat_entries(struct f2fs_sb_info *); | |
1063 | int build_node_manager(struct f2fs_sb_info *); | |
1064 | void destroy_node_manager(struct f2fs_sb_info *); | |
6e6093a8 | 1065 | int __init create_node_manager_caches(void); |
39a53e0c JK |
1066 | void destroy_node_manager_caches(void); |
1067 | ||
1068 | /* | |
1069 | * segment.c | |
1070 | */ | |
1071 | void f2fs_balance_fs(struct f2fs_sb_info *); | |
4660f9c0 | 1072 | void f2fs_balance_fs_bg(struct f2fs_sb_info *); |
39a53e0c | 1073 | void invalidate_blocks(struct f2fs_sb_info *, block_t); |
39a53e0c JK |
1074 | void clear_prefree_segments(struct f2fs_sb_info *); |
1075 | int npages_for_summary_flush(struct f2fs_sb_info *); | |
1076 | void allocate_new_segments(struct f2fs_sb_info *); | |
1077 | struct page *get_sum_page(struct f2fs_sb_info *, unsigned int); | |
3cd8a239 | 1078 | struct bio *f2fs_bio_alloc(struct block_device *, int); |
a569469e JX |
1079 | void f2fs_submit_bio(struct f2fs_sb_info *, enum page_type, bool); |
1080 | void f2fs_wait_on_page_writeback(struct page *, enum page_type, bool); | |
577e3495 | 1081 | void write_meta_page(struct f2fs_sb_info *, struct page *); |
39a53e0c JK |
1082 | void write_node_page(struct f2fs_sb_info *, struct page *, unsigned int, |
1083 | block_t, block_t *); | |
1084 | void write_data_page(struct inode *, struct page *, struct dnode_of_data*, | |
1085 | block_t, block_t *); | |
1086 | void rewrite_data_page(struct f2fs_sb_info *, struct page *, block_t); | |
1087 | void recover_data_page(struct f2fs_sb_info *, struct page *, | |
1088 | struct f2fs_summary *, block_t, block_t); | |
1089 | void rewrite_node_page(struct f2fs_sb_info *, struct page *, | |
1090 | struct f2fs_summary *, block_t, block_t); | |
1091 | void write_data_summaries(struct f2fs_sb_info *, block_t); | |
1092 | void write_node_summaries(struct f2fs_sb_info *, block_t); | |
1093 | int lookup_journal_in_cursum(struct f2fs_summary_block *, | |
1094 | int, unsigned int, int); | |
1095 | void flush_sit_entries(struct f2fs_sb_info *); | |
1096 | int build_segment_manager(struct f2fs_sb_info *); | |
39a53e0c | 1097 | void destroy_segment_manager(struct f2fs_sb_info *); |
7fd9e544 JK |
1098 | int __init create_segment_manager_caches(void); |
1099 | void destroy_segment_manager_caches(void); | |
39a53e0c JK |
1100 | |
1101 | /* | |
1102 | * checkpoint.c | |
1103 | */ | |
1104 | struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t); | |
1105 | struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t); | |
1106 | long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long); | |
cbd56e7d JK |
1107 | int acquire_orphan_inode(struct f2fs_sb_info *); |
1108 | void release_orphan_inode(struct f2fs_sb_info *); | |
39a53e0c JK |
1109 | void add_orphan_inode(struct f2fs_sb_info *, nid_t); |
1110 | void remove_orphan_inode(struct f2fs_sb_info *, nid_t); | |
1111 | int recover_orphan_inodes(struct f2fs_sb_info *); | |
1112 | int get_valid_checkpoint(struct f2fs_sb_info *); | |
1113 | void set_dirty_dir_page(struct inode *, struct page *); | |
5deb8267 | 1114 | void add_dirty_dir_inode(struct inode *); |
39a53e0c | 1115 | void remove_dirty_dir_inode(struct inode *); |
74d0b917 | 1116 | struct inode *check_dirty_dir_inode(struct f2fs_sb_info *, nid_t); |
39a53e0c | 1117 | void sync_dirty_dir_inodes(struct f2fs_sb_info *); |
43727527 | 1118 | void write_checkpoint(struct f2fs_sb_info *, bool); |
39a53e0c | 1119 | void init_orphan_info(struct f2fs_sb_info *); |
6e6093a8 | 1120 | int __init create_checkpoint_caches(void); |
39a53e0c JK |
1121 | void destroy_checkpoint_caches(void); |
1122 | ||
1123 | /* | |
1124 | * data.c | |
1125 | */ | |
1126 | int reserve_new_block(struct dnode_of_data *); | |
1127 | void update_extent_cache(block_t, struct dnode_of_data *); | |
c718379b | 1128 | struct page *find_data_page(struct inode *, pgoff_t, bool); |
39a53e0c | 1129 | struct page *get_lock_data_page(struct inode *, pgoff_t); |
64aa7ed9 | 1130 | struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool); |
39a53e0c JK |
1131 | int f2fs_readpage(struct f2fs_sb_info *, struct page *, block_t, int); |
1132 | int do_write_data_page(struct page *); | |
1133 | ||
1134 | /* | |
1135 | * gc.c | |
1136 | */ | |
1137 | int start_gc_thread(struct f2fs_sb_info *); | |
1138 | void stop_gc_thread(struct f2fs_sb_info *); | |
de93653f | 1139 | block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *); |
408e9375 | 1140 | int f2fs_gc(struct f2fs_sb_info *); |
39a53e0c | 1141 | void build_gc_manager(struct f2fs_sb_info *); |
6e6093a8 | 1142 | int __init create_gc_caches(void); |
39a53e0c JK |
1143 | void destroy_gc_caches(void); |
1144 | ||
1145 | /* | |
1146 | * recovery.c | |
1147 | */ | |
6ead1142 | 1148 | int recover_fsync_data(struct f2fs_sb_info *); |
39a53e0c JK |
1149 | bool space_for_roll_forward(struct f2fs_sb_info *); |
1150 | ||
1151 | /* | |
1152 | * debug.c | |
1153 | */ | |
1154 | #ifdef CONFIG_F2FS_STAT_FS | |
1155 | struct f2fs_stat_info { | |
1156 | struct list_head stat_list; | |
1157 | struct f2fs_sb_info *sbi; | |
1158 | struct mutex stat_lock; | |
1159 | int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs; | |
1160 | int main_area_segs, main_area_sections, main_area_zones; | |
1161 | int hit_ext, total_ext; | |
1162 | int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta; | |
1163 | int nats, sits, fnids; | |
1164 | int total_count, utilization; | |
1165 | int bg_gc; | |
1166 | unsigned int valid_count, valid_node_count, valid_inode_count; | |
1167 | unsigned int bimodal, avg_vblocks; | |
1168 | int util_free, util_valid, util_invalid; | |
1169 | int rsvd_segs, overp_segs; | |
1170 | int dirty_count, node_pages, meta_pages; | |
1171 | int prefree_count, call_count; | |
1172 | int tot_segs, node_segs, data_segs, free_segs, free_secs; | |
1173 | int tot_blks, data_blks, node_blks; | |
1174 | int curseg[NR_CURSEG_TYPE]; | |
1175 | int cursec[NR_CURSEG_TYPE]; | |
1176 | int curzone[NR_CURSEG_TYPE]; | |
1177 | ||
1178 | unsigned int segment_count[2]; | |
1179 | unsigned int block_count[2]; | |
1180 | unsigned base_mem, cache_mem; | |
1181 | }; | |
1182 | ||
963d4f7d GZ |
1183 | static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi) |
1184 | { | |
1185 | return (struct f2fs_stat_info*)sbi->stat_info; | |
1186 | } | |
1187 | ||
dcdfff65 JK |
1188 | #define stat_inc_call_count(si) ((si)->call_count++) |
1189 | #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++) | |
1190 | #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++) | |
1191 | #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--) | |
1192 | #define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++) | |
1193 | #define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++) | |
1194 | #define stat_inc_seg_type(sbi, curseg) \ | |
1195 | ((sbi)->segment_count[(curseg)->alloc_type]++) | |
1196 | #define stat_inc_block_count(sbi, curseg) \ | |
1197 | ((sbi)->block_count[(curseg)->alloc_type]++) | |
39a53e0c JK |
1198 | |
1199 | #define stat_inc_seg_count(sbi, type) \ | |
1200 | do { \ | |
963d4f7d | 1201 | struct f2fs_stat_info *si = F2FS_STAT(sbi); \ |
39a53e0c JK |
1202 | (si)->tot_segs++; \ |
1203 | if (type == SUM_TYPE_DATA) \ | |
1204 | si->data_segs++; \ | |
1205 | else \ | |
1206 | si->node_segs++; \ | |
1207 | } while (0) | |
1208 | ||
1209 | #define stat_inc_tot_blk_count(si, blks) \ | |
1210 | (si->tot_blks += (blks)) | |
1211 | ||
1212 | #define stat_inc_data_blk_count(sbi, blks) \ | |
1213 | do { \ | |
963d4f7d | 1214 | struct f2fs_stat_info *si = F2FS_STAT(sbi); \ |
39a53e0c JK |
1215 | stat_inc_tot_blk_count(si, blks); \ |
1216 | si->data_blks += (blks); \ | |
1217 | } while (0) | |
1218 | ||
1219 | #define stat_inc_node_blk_count(sbi, blks) \ | |
1220 | do { \ | |
963d4f7d | 1221 | struct f2fs_stat_info *si = F2FS_STAT(sbi); \ |
39a53e0c JK |
1222 | stat_inc_tot_blk_count(si, blks); \ |
1223 | si->node_blks += (blks); \ | |
1224 | } while (0) | |
1225 | ||
1226 | int f2fs_build_stats(struct f2fs_sb_info *); | |
1227 | void f2fs_destroy_stats(struct f2fs_sb_info *); | |
6e6093a8 | 1228 | void __init f2fs_create_root_stats(void); |
4589d25d | 1229 | void f2fs_destroy_root_stats(void); |
39a53e0c JK |
1230 | #else |
1231 | #define stat_inc_call_count(si) | |
dcdfff65 JK |
1232 | #define stat_inc_bggc_count(si) |
1233 | #define stat_inc_dirty_dir(sbi) | |
1234 | #define stat_dec_dirty_dir(sbi) | |
1235 | #define stat_inc_total_hit(sb) | |
1236 | #define stat_inc_read_hit(sb) | |
1237 | #define stat_inc_seg_type(sbi, curseg) | |
1238 | #define stat_inc_block_count(sbi, curseg) | |
39a53e0c JK |
1239 | #define stat_inc_seg_count(si, type) |
1240 | #define stat_inc_tot_blk_count(si, blks) | |
1241 | #define stat_inc_data_blk_count(si, blks) | |
1242 | #define stat_inc_node_blk_count(sbi, blks) | |
1243 | ||
1244 | static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; } | |
1245 | static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { } | |
6e6093a8 | 1246 | static inline void __init f2fs_create_root_stats(void) { } |
4589d25d | 1247 | static inline void f2fs_destroy_root_stats(void) { } |
39a53e0c JK |
1248 | #endif |
1249 | ||
1250 | extern const struct file_operations f2fs_dir_operations; | |
1251 | extern const struct file_operations f2fs_file_operations; | |
1252 | extern const struct inode_operations f2fs_file_inode_operations; | |
1253 | extern const struct address_space_operations f2fs_dblock_aops; | |
1254 | extern const struct address_space_operations f2fs_node_aops; | |
1255 | extern const struct address_space_operations f2fs_meta_aops; | |
1256 | extern const struct inode_operations f2fs_dir_inode_operations; | |
1257 | extern const struct inode_operations f2fs_symlink_inode_operations; | |
1258 | extern const struct inode_operations f2fs_special_inode_operations; | |
1259 | #endif |