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