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0a8165d7 | 1 | /* |
aff063e2 JK |
2 | * fs/f2fs/super.c |
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 | #include <linux/module.h> | |
12 | #include <linux/init.h> | |
13 | #include <linux/fs.h> | |
14 | #include <linux/statfs.h> | |
aff063e2 JK |
15 | #include <linux/buffer_head.h> |
16 | #include <linux/backing-dev.h> | |
17 | #include <linux/kthread.h> | |
18 | #include <linux/parser.h> | |
19 | #include <linux/mount.h> | |
20 | #include <linux/seq_file.h> | |
5e176d54 | 21 | #include <linux/proc_fs.h> |
aff063e2 JK |
22 | #include <linux/random.h> |
23 | #include <linux/exportfs.h> | |
d3ee456d | 24 | #include <linux/blkdev.h> |
aff063e2 | 25 | #include <linux/f2fs_fs.h> |
b59d0bae | 26 | #include <linux/sysfs.h> |
aff063e2 JK |
27 | |
28 | #include "f2fs.h" | |
29 | #include "node.h" | |
5ec4e49f | 30 | #include "segment.h" |
aff063e2 | 31 | #include "xattr.h" |
b59d0bae | 32 | #include "gc.h" |
db9f7c1a | 33 | #include "trace.h" |
aff063e2 | 34 | |
a2a4a7e4 NJ |
35 | #define CREATE_TRACE_POINTS |
36 | #include <trace/events/f2fs.h> | |
37 | ||
aff063e2 JK |
38 | static struct kmem_cache *f2fs_inode_cachep; |
39 | ||
73faec4d | 40 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
2c63fead JK |
41 | |
42 | char *fault_name[FAULT_MAX] = { | |
43 | [FAULT_KMALLOC] = "kmalloc", | |
c41f3cc3 | 44 | [FAULT_PAGE_ALLOC] = "page alloc", |
cb78942b JK |
45 | [FAULT_ALLOC_NID] = "alloc nid", |
46 | [FAULT_ORPHAN] = "orphan", | |
47 | [FAULT_BLOCK] = "no more block", | |
48 | [FAULT_DIR_DEPTH] = "too big dir depth", | |
53aa6bbf | 49 | [FAULT_EVICT_INODE] = "evict_inode fail", |
14b44d23 | 50 | [FAULT_TRUNCATE] = "truncate fail", |
8b038c70 | 51 | [FAULT_IO] = "IO error", |
0f348028 | 52 | [FAULT_CHECKPOINT] = "checkpoint error", |
2c63fead | 53 | }; |
08796897 | 54 | |
1ecc0c5c CY |
55 | static void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, |
56 | unsigned int rate) | |
08796897 | 57 | { |
1ecc0c5c CY |
58 | struct f2fs_fault_info *ffi = &sbi->fault_info; |
59 | ||
08796897 | 60 | if (rate) { |
1ecc0c5c CY |
61 | atomic_set(&ffi->inject_ops, 0); |
62 | ffi->inject_rate = rate; | |
63 | ffi->inject_type = (1 << FAULT_MAX) - 1; | |
08796897 | 64 | } else { |
1ecc0c5c | 65 | memset(ffi, 0, sizeof(struct f2fs_fault_info)); |
08796897 SY |
66 | } |
67 | } | |
73faec4d JK |
68 | #endif |
69 | ||
2658e50d JK |
70 | /* f2fs-wide shrinker description */ |
71 | static struct shrinker f2fs_shrinker_info = { | |
72 | .scan_objects = f2fs_shrink_scan, | |
73 | .count_objects = f2fs_shrink_count, | |
74 | .seeks = DEFAULT_SEEKS, | |
75 | }; | |
76 | ||
aff063e2 | 77 | enum { |
696c018c | 78 | Opt_gc_background, |
aff063e2 | 79 | Opt_disable_roll_forward, |
2d834bf9 | 80 | Opt_norecovery, |
aff063e2 | 81 | Opt_discard, |
64058be9 | 82 | Opt_nodiscard, |
aff063e2 | 83 | Opt_noheap, |
7a20b8a6 | 84 | Opt_heap, |
4058c511 | 85 | Opt_user_xattr, |
aff063e2 | 86 | Opt_nouser_xattr, |
4058c511 | 87 | Opt_acl, |
aff063e2 JK |
88 | Opt_noacl, |
89 | Opt_active_logs, | |
90 | Opt_disable_ext_identify, | |
444c580f | 91 | Opt_inline_xattr, |
23cf7212 | 92 | Opt_noinline_xattr, |
8274de77 | 93 | Opt_inline_data, |
5efd3c6f | 94 | Opt_inline_dentry, |
97c1794a | 95 | Opt_noinline_dentry, |
6b4afdd7 | 96 | Opt_flush_merge, |
69e9e427 | 97 | Opt_noflush_merge, |
0f7b2abd | 98 | Opt_nobarrier, |
d5053a34 | 99 | Opt_fastboot, |
89672159 | 100 | Opt_extent_cache, |
7daaea25 | 101 | Opt_noextent_cache, |
75342797 | 102 | Opt_noinline_data, |
343f40f0 | 103 | Opt_data_flush, |
36abef4e | 104 | Opt_mode, |
ec91538d | 105 | Opt_io_size_bits, |
73faec4d | 106 | Opt_fault_injection, |
6d94c74a JK |
107 | Opt_lazytime, |
108 | Opt_nolazytime, | |
aff063e2 JK |
109 | Opt_err, |
110 | }; | |
111 | ||
112 | static match_table_t f2fs_tokens = { | |
696c018c | 113 | {Opt_gc_background, "background_gc=%s"}, |
aff063e2 | 114 | {Opt_disable_roll_forward, "disable_roll_forward"}, |
2d834bf9 | 115 | {Opt_norecovery, "norecovery"}, |
aff063e2 | 116 | {Opt_discard, "discard"}, |
64058be9 | 117 | {Opt_nodiscard, "nodiscard"}, |
aff063e2 | 118 | {Opt_noheap, "no_heap"}, |
7a20b8a6 | 119 | {Opt_heap, "heap"}, |
4058c511 | 120 | {Opt_user_xattr, "user_xattr"}, |
aff063e2 | 121 | {Opt_nouser_xattr, "nouser_xattr"}, |
4058c511 | 122 | {Opt_acl, "acl"}, |
aff063e2 JK |
123 | {Opt_noacl, "noacl"}, |
124 | {Opt_active_logs, "active_logs=%u"}, | |
125 | {Opt_disable_ext_identify, "disable_ext_identify"}, | |
444c580f | 126 | {Opt_inline_xattr, "inline_xattr"}, |
23cf7212 | 127 | {Opt_noinline_xattr, "noinline_xattr"}, |
8274de77 | 128 | {Opt_inline_data, "inline_data"}, |
5efd3c6f | 129 | {Opt_inline_dentry, "inline_dentry"}, |
97c1794a | 130 | {Opt_noinline_dentry, "noinline_dentry"}, |
6b4afdd7 | 131 | {Opt_flush_merge, "flush_merge"}, |
69e9e427 | 132 | {Opt_noflush_merge, "noflush_merge"}, |
0f7b2abd | 133 | {Opt_nobarrier, "nobarrier"}, |
d5053a34 | 134 | {Opt_fastboot, "fastboot"}, |
89672159 | 135 | {Opt_extent_cache, "extent_cache"}, |
7daaea25 | 136 | {Opt_noextent_cache, "noextent_cache"}, |
75342797 | 137 | {Opt_noinline_data, "noinline_data"}, |
343f40f0 | 138 | {Opt_data_flush, "data_flush"}, |
36abef4e | 139 | {Opt_mode, "mode=%s"}, |
ec91538d | 140 | {Opt_io_size_bits, "io_bits=%u"}, |
73faec4d | 141 | {Opt_fault_injection, "fault_injection=%u"}, |
6d94c74a JK |
142 | {Opt_lazytime, "lazytime"}, |
143 | {Opt_nolazytime, "nolazytime"}, | |
aff063e2 JK |
144 | {Opt_err, NULL}, |
145 | }; | |
146 | ||
a07ef784 NJ |
147 | void f2fs_msg(struct super_block *sb, const char *level, const char *fmt, ...) |
148 | { | |
149 | struct va_format vaf; | |
150 | va_list args; | |
151 | ||
152 | va_start(args, fmt); | |
153 | vaf.fmt = fmt; | |
154 | vaf.va = &args; | |
155 | printk("%sF2FS-fs (%s): %pV\n", level, sb->s_id, &vaf); | |
156 | va_end(args); | |
157 | } | |
158 | ||
aff063e2 JK |
159 | static void init_once(void *foo) |
160 | { | |
161 | struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo; | |
162 | ||
aff063e2 JK |
163 | inode_init_once(&fi->vfs_inode); |
164 | } | |
165 | ||
696c018c NJ |
166 | static int parse_options(struct super_block *sb, char *options) |
167 | { | |
168 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
09d54cdd | 169 | struct request_queue *q; |
696c018c NJ |
170 | substring_t args[MAX_OPT_ARGS]; |
171 | char *p, *name; | |
172 | int arg = 0; | |
173 | ||
174 | if (!options) | |
175 | return 0; | |
176 | ||
177 | while ((p = strsep(&options, ",")) != NULL) { | |
178 | int token; | |
179 | if (!*p) | |
180 | continue; | |
181 | /* | |
182 | * Initialize args struct so we know whether arg was | |
183 | * found; some options take optional arguments. | |
184 | */ | |
185 | args[0].to = args[0].from = NULL; | |
186 | token = match_token(p, f2fs_tokens, args); | |
187 | ||
188 | switch (token) { | |
189 | case Opt_gc_background: | |
190 | name = match_strdup(&args[0]); | |
191 | ||
192 | if (!name) | |
193 | return -ENOMEM; | |
6aefd93b | 194 | if (strlen(name) == 2 && !strncmp(name, "on", 2)) { |
696c018c | 195 | set_opt(sbi, BG_GC); |
6aefd93b JK |
196 | clear_opt(sbi, FORCE_FG_GC); |
197 | } else if (strlen(name) == 3 && !strncmp(name, "off", 3)) { | |
696c018c | 198 | clear_opt(sbi, BG_GC); |
6aefd93b JK |
199 | clear_opt(sbi, FORCE_FG_GC); |
200 | } else if (strlen(name) == 4 && !strncmp(name, "sync", 4)) { | |
201 | set_opt(sbi, BG_GC); | |
202 | set_opt(sbi, FORCE_FG_GC); | |
203 | } else { | |
696c018c NJ |
204 | kfree(name); |
205 | return -EINVAL; | |
206 | } | |
207 | kfree(name); | |
208 | break; | |
209 | case Opt_disable_roll_forward: | |
210 | set_opt(sbi, DISABLE_ROLL_FORWARD); | |
211 | break; | |
2d834bf9 JK |
212 | case Opt_norecovery: |
213 | /* this option mounts f2fs with ro */ | |
214 | set_opt(sbi, DISABLE_ROLL_FORWARD); | |
215 | if (!f2fs_readonly(sb)) | |
216 | return -EINVAL; | |
217 | break; | |
696c018c | 218 | case Opt_discard: |
09d54cdd CY |
219 | q = bdev_get_queue(sb->s_bdev); |
220 | if (blk_queue_discard(q)) { | |
221 | set_opt(sbi, DISCARD); | |
0ab02998 | 222 | } else if (!f2fs_sb_mounted_blkzoned(sb)) { |
09d54cdd CY |
223 | f2fs_msg(sb, KERN_WARNING, |
224 | "mounting with \"discard\" option, but " | |
225 | "the device does not support discard"); | |
226 | } | |
696c018c | 227 | break; |
64058be9 | 228 | case Opt_nodiscard: |
96ba2dec DLM |
229 | if (f2fs_sb_mounted_blkzoned(sb)) { |
230 | f2fs_msg(sb, KERN_WARNING, | |
231 | "discard is required for zoned block devices"); | |
232 | return -EINVAL; | |
233 | } | |
64058be9 | 234 | clear_opt(sbi, DISCARD); |
487df616 | 235 | break; |
696c018c NJ |
236 | case Opt_noheap: |
237 | set_opt(sbi, NOHEAP); | |
238 | break; | |
7a20b8a6 JK |
239 | case Opt_heap: |
240 | clear_opt(sbi, NOHEAP); | |
241 | break; | |
696c018c | 242 | #ifdef CONFIG_F2FS_FS_XATTR |
4058c511 KA |
243 | case Opt_user_xattr: |
244 | set_opt(sbi, XATTR_USER); | |
245 | break; | |
696c018c NJ |
246 | case Opt_nouser_xattr: |
247 | clear_opt(sbi, XATTR_USER); | |
248 | break; | |
444c580f JK |
249 | case Opt_inline_xattr: |
250 | set_opt(sbi, INLINE_XATTR); | |
251 | break; | |
23cf7212 CY |
252 | case Opt_noinline_xattr: |
253 | clear_opt(sbi, INLINE_XATTR); | |
254 | break; | |
696c018c | 255 | #else |
4058c511 KA |
256 | case Opt_user_xattr: |
257 | f2fs_msg(sb, KERN_INFO, | |
258 | "user_xattr options not supported"); | |
259 | break; | |
696c018c NJ |
260 | case Opt_nouser_xattr: |
261 | f2fs_msg(sb, KERN_INFO, | |
262 | "nouser_xattr options not supported"); | |
263 | break; | |
444c580f JK |
264 | case Opt_inline_xattr: |
265 | f2fs_msg(sb, KERN_INFO, | |
266 | "inline_xattr options not supported"); | |
267 | break; | |
23cf7212 CY |
268 | case Opt_noinline_xattr: |
269 | f2fs_msg(sb, KERN_INFO, | |
270 | "noinline_xattr options not supported"); | |
271 | break; | |
696c018c NJ |
272 | #endif |
273 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
4058c511 KA |
274 | case Opt_acl: |
275 | set_opt(sbi, POSIX_ACL); | |
276 | break; | |
696c018c NJ |
277 | case Opt_noacl: |
278 | clear_opt(sbi, POSIX_ACL); | |
279 | break; | |
280 | #else | |
4058c511 KA |
281 | case Opt_acl: |
282 | f2fs_msg(sb, KERN_INFO, "acl options not supported"); | |
283 | break; | |
696c018c NJ |
284 | case Opt_noacl: |
285 | f2fs_msg(sb, KERN_INFO, "noacl options not supported"); | |
286 | break; | |
287 | #endif | |
288 | case Opt_active_logs: | |
289 | if (args->from && match_int(args, &arg)) | |
290 | return -EINVAL; | |
291 | if (arg != 2 && arg != 4 && arg != NR_CURSEG_TYPE) | |
292 | return -EINVAL; | |
293 | sbi->active_logs = arg; | |
294 | break; | |
295 | case Opt_disable_ext_identify: | |
296 | set_opt(sbi, DISABLE_EXT_IDENTIFY); | |
297 | break; | |
8274de77 HL |
298 | case Opt_inline_data: |
299 | set_opt(sbi, INLINE_DATA); | |
300 | break; | |
5efd3c6f CY |
301 | case Opt_inline_dentry: |
302 | set_opt(sbi, INLINE_DENTRY); | |
303 | break; | |
97c1794a CY |
304 | case Opt_noinline_dentry: |
305 | clear_opt(sbi, INLINE_DENTRY); | |
306 | break; | |
6b4afdd7 JK |
307 | case Opt_flush_merge: |
308 | set_opt(sbi, FLUSH_MERGE); | |
309 | break; | |
69e9e427 JK |
310 | case Opt_noflush_merge: |
311 | clear_opt(sbi, FLUSH_MERGE); | |
312 | break; | |
0f7b2abd JK |
313 | case Opt_nobarrier: |
314 | set_opt(sbi, NOBARRIER); | |
315 | break; | |
d5053a34 JK |
316 | case Opt_fastboot: |
317 | set_opt(sbi, FASTBOOT); | |
318 | break; | |
89672159 CY |
319 | case Opt_extent_cache: |
320 | set_opt(sbi, EXTENT_CACHE); | |
321 | break; | |
7daaea25 JK |
322 | case Opt_noextent_cache: |
323 | clear_opt(sbi, EXTENT_CACHE); | |
324 | break; | |
75342797 WL |
325 | case Opt_noinline_data: |
326 | clear_opt(sbi, INLINE_DATA); | |
327 | break; | |
343f40f0 CY |
328 | case Opt_data_flush: |
329 | set_opt(sbi, DATA_FLUSH); | |
330 | break; | |
36abef4e JK |
331 | case Opt_mode: |
332 | name = match_strdup(&args[0]); | |
333 | ||
334 | if (!name) | |
335 | return -ENOMEM; | |
336 | if (strlen(name) == 8 && | |
337 | !strncmp(name, "adaptive", 8)) { | |
3adc57e9 DLM |
338 | if (f2fs_sb_mounted_blkzoned(sb)) { |
339 | f2fs_msg(sb, KERN_WARNING, | |
340 | "adaptive mode is not allowed with " | |
341 | "zoned block device feature"); | |
342 | kfree(name); | |
343 | return -EINVAL; | |
344 | } | |
52763a4b | 345 | set_opt_mode(sbi, F2FS_MOUNT_ADAPTIVE); |
36abef4e JK |
346 | } else if (strlen(name) == 3 && |
347 | !strncmp(name, "lfs", 3)) { | |
52763a4b | 348 | set_opt_mode(sbi, F2FS_MOUNT_LFS); |
36abef4e JK |
349 | } else { |
350 | kfree(name); | |
351 | return -EINVAL; | |
352 | } | |
353 | kfree(name); | |
354 | break; | |
ec91538d JK |
355 | case Opt_io_size_bits: |
356 | if (args->from && match_int(args, &arg)) | |
357 | return -EINVAL; | |
358 | if (arg > __ilog2_u32(BIO_MAX_PAGES)) { | |
359 | f2fs_msg(sb, KERN_WARNING, | |
360 | "Not support %d, larger than %d", | |
361 | 1 << arg, BIO_MAX_PAGES); | |
362 | return -EINVAL; | |
363 | } | |
364 | sbi->write_io_size_bits = arg; | |
365 | break; | |
73faec4d JK |
366 | case Opt_fault_injection: |
367 | if (args->from && match_int(args, &arg)) | |
368 | return -EINVAL; | |
369 | #ifdef CONFIG_F2FS_FAULT_INJECTION | |
1ecc0c5c | 370 | f2fs_build_fault_attr(sbi, arg); |
0cc0dec2 | 371 | set_opt(sbi, FAULT_INJECTION); |
73faec4d JK |
372 | #else |
373 | f2fs_msg(sb, KERN_INFO, | |
374 | "FAULT_INJECTION was not selected"); | |
375 | #endif | |
376 | break; | |
6d94c74a JK |
377 | case Opt_lazytime: |
378 | sb->s_flags |= MS_LAZYTIME; | |
379 | break; | |
380 | case Opt_nolazytime: | |
381 | sb->s_flags &= ~MS_LAZYTIME; | |
382 | break; | |
696c018c NJ |
383 | default: |
384 | f2fs_msg(sb, KERN_ERR, | |
385 | "Unrecognized mount option \"%s\" or missing value", | |
386 | p); | |
387 | return -EINVAL; | |
388 | } | |
389 | } | |
ec91538d JK |
390 | |
391 | if (F2FS_IO_SIZE_BITS(sbi) && !test_opt(sbi, LFS)) { | |
392 | f2fs_msg(sb, KERN_ERR, | |
393 | "Should set mode=lfs with %uKB-sized IO", | |
394 | F2FS_IO_SIZE_KB(sbi)); | |
395 | return -EINVAL; | |
396 | } | |
696c018c NJ |
397 | return 0; |
398 | } | |
399 | ||
aff063e2 JK |
400 | static struct inode *f2fs_alloc_inode(struct super_block *sb) |
401 | { | |
402 | struct f2fs_inode_info *fi; | |
403 | ||
a0acdfe0 | 404 | fi = kmem_cache_alloc(f2fs_inode_cachep, GFP_F2FS_ZERO); |
aff063e2 JK |
405 | if (!fi) |
406 | return NULL; | |
407 | ||
408 | init_once((void *) fi); | |
409 | ||
434720fa | 410 | /* Initialize f2fs-specific inode info */ |
aff063e2 | 411 | fi->vfs_inode.i_version = 1; |
204706c7 | 412 | atomic_set(&fi->dirty_pages, 0); |
aff063e2 JK |
413 | fi->i_current_depth = 1; |
414 | fi->i_advise = 0; | |
d928bfbf | 415 | init_rwsem(&fi->i_sem); |
2710fd7e | 416 | INIT_LIST_HEAD(&fi->dirty_list); |
0f18b462 | 417 | INIT_LIST_HEAD(&fi->gdirty_list); |
88b88a66 JK |
418 | INIT_LIST_HEAD(&fi->inmem_pages); |
419 | mutex_init(&fi->inmem_lock); | |
82e0a5aa CY |
420 | init_rwsem(&fi->dio_rwsem[READ]); |
421 | init_rwsem(&fi->dio_rwsem[WRITE]); | |
5a3a2d83 | 422 | init_rwsem(&fi->i_mmap_sem); |
aff063e2 | 423 | |
ab9fa662 JK |
424 | /* Will be used by directory only */ |
425 | fi->i_dir_level = F2FS_SB(sb)->dir_level; | |
aff063e2 JK |
426 | return &fi->vfs_inode; |
427 | } | |
428 | ||
531ad7d5 JK |
429 | static int f2fs_drop_inode(struct inode *inode) |
430 | { | |
b8d96a30 | 431 | int ret; |
531ad7d5 JK |
432 | /* |
433 | * This is to avoid a deadlock condition like below. | |
434 | * writeback_single_inode(inode) | |
435 | * - f2fs_write_data_page | |
436 | * - f2fs_gc -> iput -> evict | |
437 | * - inode_wait_for_writeback(inode) | |
438 | */ | |
0f18b462 | 439 | if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) { |
06e1bc05 | 440 | if (!inode->i_nlink && !is_bad_inode(inode)) { |
3e72f721 JK |
441 | /* to avoid evict_inode call simultaneously */ |
442 | atomic_inc(&inode->i_count); | |
06e1bc05 JK |
443 | spin_unlock(&inode->i_lock); |
444 | ||
445 | /* some remained atomic pages should discarded */ | |
446 | if (f2fs_is_atomic_file(inode)) | |
29b96b54 | 447 | drop_inmem_pages(inode); |
06e1bc05 | 448 | |
3e72f721 JK |
449 | /* should remain fi->extent_tree for writepage */ |
450 | f2fs_destroy_extent_node(inode); | |
451 | ||
06e1bc05 | 452 | sb_start_intwrite(inode->i_sb); |
fc9581c8 | 453 | f2fs_i_size_write(inode, 0); |
06e1bc05 JK |
454 | |
455 | if (F2FS_HAS_BLOCKS(inode)) | |
9a449e9c | 456 | f2fs_truncate(inode); |
06e1bc05 JK |
457 | |
458 | sb_end_intwrite(inode->i_sb); | |
459 | ||
0b81d077 | 460 | fscrypt_put_encryption_info(inode, NULL); |
06e1bc05 | 461 | spin_lock(&inode->i_lock); |
3e72f721 | 462 | atomic_dec(&inode->i_count); |
06e1bc05 | 463 | } |
b8d96a30 | 464 | trace_f2fs_drop_inode(inode, 0); |
531ad7d5 | 465 | return 0; |
06e1bc05 | 466 | } |
b8d96a30 HP |
467 | ret = generic_drop_inode(inode); |
468 | trace_f2fs_drop_inode(inode, ret); | |
469 | return ret; | |
531ad7d5 JK |
470 | } |
471 | ||
7c45729a | 472 | int f2fs_inode_dirtied(struct inode *inode, bool sync) |
b3783873 | 473 | { |
0f18b462 | 474 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
7c45729a | 475 | int ret = 0; |
0f18b462 | 476 | |
0f18b462 JK |
477 | spin_lock(&sbi->inode_lock[DIRTY_META]); |
478 | if (is_inode_flag_set(inode, FI_DIRTY_INODE)) { | |
7c45729a JK |
479 | ret = 1; |
480 | } else { | |
481 | set_inode_flag(inode, FI_DIRTY_INODE); | |
482 | stat_inc_dirty_inode(sbi, DIRTY_META); | |
0f18b462 | 483 | } |
7c45729a JK |
484 | if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) { |
485 | list_add_tail(&F2FS_I(inode)->gdirty_list, | |
0f18b462 | 486 | &sbi->inode_list[DIRTY_META]); |
7c45729a JK |
487 | inc_page_count(sbi, F2FS_DIRTY_IMETA); |
488 | } | |
338bbfa0 | 489 | spin_unlock(&sbi->inode_lock[DIRTY_META]); |
7c45729a | 490 | return ret; |
0f18b462 JK |
491 | } |
492 | ||
493 | void f2fs_inode_synced(struct inode *inode) | |
494 | { | |
495 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
496 | ||
497 | spin_lock(&sbi->inode_lock[DIRTY_META]); | |
498 | if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) { | |
499 | spin_unlock(&sbi->inode_lock[DIRTY_META]); | |
500 | return; | |
501 | } | |
7c45729a JK |
502 | if (!list_empty(&F2FS_I(inode)->gdirty_list)) { |
503 | list_del_init(&F2FS_I(inode)->gdirty_list); | |
504 | dec_page_count(sbi, F2FS_DIRTY_IMETA); | |
505 | } | |
0f18b462 | 506 | clear_inode_flag(inode, FI_DIRTY_INODE); |
26de9b11 | 507 | clear_inode_flag(inode, FI_AUTO_RECOVER); |
0f18b462 | 508 | stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META); |
338bbfa0 | 509 | spin_unlock(&sbi->inode_lock[DIRTY_META]); |
b3783873 JK |
510 | } |
511 | ||
b56ab837 JK |
512 | /* |
513 | * f2fs_dirty_inode() is called from __mark_inode_dirty() | |
514 | * | |
515 | * We should call set_dirty_inode to write the dirty inode through write_inode. | |
516 | */ | |
517 | static void f2fs_dirty_inode(struct inode *inode, int flags) | |
518 | { | |
519 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
520 | ||
521 | if (inode->i_ino == F2FS_NODE_INO(sbi) || | |
522 | inode->i_ino == F2FS_META_INO(sbi)) | |
523 | return; | |
524 | ||
525 | if (flags == I_DIRTY_TIME) | |
526 | return; | |
527 | ||
528 | if (is_inode_flag_set(inode, FI_AUTO_RECOVER)) | |
529 | clear_inode_flag(inode, FI_AUTO_RECOVER); | |
530 | ||
7c45729a | 531 | f2fs_inode_dirtied(inode, false); |
b56ab837 JK |
532 | } |
533 | ||
aff063e2 JK |
534 | static void f2fs_i_callback(struct rcu_head *head) |
535 | { | |
536 | struct inode *inode = container_of(head, struct inode, i_rcu); | |
537 | kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode)); | |
538 | } | |
539 | ||
25ca923b | 540 | static void f2fs_destroy_inode(struct inode *inode) |
aff063e2 JK |
541 | { |
542 | call_rcu(&inode->i_rcu, f2fs_i_callback); | |
543 | } | |
544 | ||
523be8a6 JK |
545 | static void destroy_percpu_info(struct f2fs_sb_info *sbi) |
546 | { | |
41382ec4 | 547 | percpu_counter_destroy(&sbi->alloc_valid_block_count); |
513c5f37 | 548 | percpu_counter_destroy(&sbi->total_valid_inode_count); |
523be8a6 JK |
549 | } |
550 | ||
3c62be17 JK |
551 | static void destroy_device_list(struct f2fs_sb_info *sbi) |
552 | { | |
553 | int i; | |
554 | ||
555 | for (i = 0; i < sbi->s_ndevs; i++) { | |
556 | blkdev_put(FDEV(i).bdev, FMODE_EXCL); | |
557 | #ifdef CONFIG_BLK_DEV_ZONED | |
558 | kfree(FDEV(i).blkz_type); | |
559 | #endif | |
560 | } | |
561 | kfree(sbi->devs); | |
562 | } | |
563 | ||
a398101a CY |
564 | static void f2fs_put_super(struct super_block *sb) |
565 | { | |
566 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
567 | int i; | |
5e176d54 | 568 | |
aff063e2 JK |
569 | stop_gc_thread(sbi); |
570 | ||
2658e50d JK |
571 | /* prevent remaining shrinker jobs */ |
572 | mutex_lock(&sbi->umount_mutex); | |
573 | ||
85dc2f2c JK |
574 | /* |
575 | * We don't need to do checkpoint when superblock is clean. | |
576 | * But, the previous checkpoint was not done by umount, it needs to do | |
577 | * clean checkpoint again. | |
578 | */ | |
caf0047e | 579 | if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) || |
aaec2b1d | 580 | !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) { |
75ab4cb8 JK |
581 | struct cp_control cpc = { |
582 | .reason = CP_UMOUNT, | |
583 | }; | |
584 | write_checkpoint(sbi, &cpc); | |
585 | } | |
aff063e2 | 586 | |
4e6a8d9b | 587 | /* be sure to wait for any on-going discard commands */ |
d431413f | 588 | f2fs_wait_discard_bios(sbi); |
4e6a8d9b | 589 | |
1f43e2ad CY |
590 | if (!sbi->discard_blks) { |
591 | struct cp_control cpc = { | |
592 | .reason = CP_UMOUNT | CP_TRIMMED, | |
593 | }; | |
594 | write_checkpoint(sbi, &cpc); | |
595 | } | |
596 | ||
eca616f8 JK |
597 | /* write_checkpoint can update stat informaion */ |
598 | f2fs_destroy_stats(sbi); | |
599 | ||
cf779cab JK |
600 | /* |
601 | * normally superblock is clean, so we need to release this. | |
602 | * In addition, EIO will skip do checkpoint, we need this as well. | |
603 | */ | |
74ef9241 | 604 | release_ino_entry(sbi, true); |
6f12ac25 | 605 | |
2658e50d JK |
606 | f2fs_leave_shrinker(sbi); |
607 | mutex_unlock(&sbi->umount_mutex); | |
608 | ||
17c19120 | 609 | /* our cp_error case, we can wait for any writeback page */ |
b9109b0e | 610 | f2fs_flush_merged_writes(sbi); |
17c19120 | 611 | |
aff063e2 JK |
612 | iput(sbi->node_inode); |
613 | iput(sbi->meta_inode); | |
614 | ||
615 | /* destroy f2fs internal modules */ | |
616 | destroy_node_manager(sbi); | |
617 | destroy_segment_manager(sbi); | |
618 | ||
619 | kfree(sbi->ckpt); | |
a398101a CY |
620 | |
621 | f2fs_exit_sysfs(sbi); | |
aff063e2 JK |
622 | |
623 | sb->s_fs_info = NULL; | |
43b6573b KM |
624 | if (sbi->s_chksum_driver) |
625 | crypto_free_shash(sbi->s_chksum_driver); | |
b39f0de2 | 626 | kfree(sbi->raw_super); |
523be8a6 | 627 | |
3c62be17 | 628 | destroy_device_list(sbi); |
b6895e8f | 629 | mempool_destroy(sbi->write_io_dummy); |
523be8a6 | 630 | destroy_percpu_info(sbi); |
a912b54d JK |
631 | for (i = 0; i < NR_PAGE_TYPE; i++) |
632 | kfree(sbi->write_io[i]); | |
aff063e2 JK |
633 | kfree(sbi); |
634 | } | |
635 | ||
636 | int f2fs_sync_fs(struct super_block *sb, int sync) | |
637 | { | |
638 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
c34f42e2 | 639 | int err = 0; |
aff063e2 | 640 | |
a2a4a7e4 NJ |
641 | trace_f2fs_sync_fs(sb, sync); |
642 | ||
b7473754 | 643 | if (sync) { |
d5053a34 JK |
644 | struct cp_control cpc; |
645 | ||
119ee914 JK |
646 | cpc.reason = __get_cp_reason(sbi); |
647 | ||
b7473754 | 648 | mutex_lock(&sbi->gc_mutex); |
c34f42e2 | 649 | err = write_checkpoint(sbi, &cpc); |
b7473754 | 650 | mutex_unlock(&sbi->gc_mutex); |
b7473754 | 651 | } |
05ca3632 | 652 | f2fs_trace_ios(NULL, 1); |
aff063e2 | 653 | |
c34f42e2 | 654 | return err; |
aff063e2 JK |
655 | } |
656 | ||
d6212a5f CL |
657 | static int f2fs_freeze(struct super_block *sb) |
658 | { | |
77888c1e | 659 | if (f2fs_readonly(sb)) |
d6212a5f CL |
660 | return 0; |
661 | ||
b4b9d34c JK |
662 | /* IO error happened before */ |
663 | if (unlikely(f2fs_cp_error(F2FS_SB(sb)))) | |
664 | return -EIO; | |
665 | ||
666 | /* must be clean, since sync_filesystem() was already called */ | |
667 | if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY)) | |
668 | return -EINVAL; | |
669 | return 0; | |
d6212a5f CL |
670 | } |
671 | ||
672 | static int f2fs_unfreeze(struct super_block *sb) | |
673 | { | |
674 | return 0; | |
675 | } | |
676 | ||
aff063e2 JK |
677 | static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf) |
678 | { | |
679 | struct super_block *sb = dentry->d_sb; | |
680 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
681 | u64 id = huge_encode_dev(sb->s_bdev->bd_dev); | |
682 | block_t total_count, user_block_count, start_count, ovp_count; | |
683 | ||
684 | total_count = le64_to_cpu(sbi->raw_super->block_count); | |
685 | user_block_count = sbi->user_block_count; | |
686 | start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr); | |
687 | ovp_count = SM_I(sbi)->ovp_segments << sbi->log_blocks_per_seg; | |
688 | buf->f_type = F2FS_SUPER_MAGIC; | |
689 | buf->f_bsize = sbi->blocksize; | |
690 | ||
691 | buf->f_blocks = total_count - start_count; | |
3e6d0b4d | 692 | buf->f_bfree = user_block_count - valid_user_blocks(sbi) + ovp_count; |
aff063e2 JK |
693 | buf->f_bavail = user_block_count - valid_user_blocks(sbi); |
694 | ||
c200b1aa | 695 | buf->f_files = sbi->total_node_count - F2FS_RESERVED_NODE_NUM; |
b08b12d2 CY |
696 | buf->f_ffree = min(buf->f_files - valid_node_count(sbi), |
697 | buf->f_bavail); | |
aff063e2 | 698 | |
5a20d339 | 699 | buf->f_namelen = F2FS_NAME_LEN; |
aff063e2 JK |
700 | buf->f_fsid.val[0] = (u32)id; |
701 | buf->f_fsid.val[1] = (u32)(id >> 32); | |
702 | ||
703 | return 0; | |
704 | } | |
705 | ||
706 | static int f2fs_show_options(struct seq_file *seq, struct dentry *root) | |
707 | { | |
708 | struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb); | |
709 | ||
6aefd93b JK |
710 | if (!f2fs_readonly(sbi->sb) && test_opt(sbi, BG_GC)) { |
711 | if (test_opt(sbi, FORCE_FG_GC)) | |
712 | seq_printf(seq, ",background_gc=%s", "sync"); | |
713 | else | |
714 | seq_printf(seq, ",background_gc=%s", "on"); | |
715 | } else { | |
696c018c | 716 | seq_printf(seq, ",background_gc=%s", "off"); |
6aefd93b | 717 | } |
aff063e2 JK |
718 | if (test_opt(sbi, DISABLE_ROLL_FORWARD)) |
719 | seq_puts(seq, ",disable_roll_forward"); | |
720 | if (test_opt(sbi, DISCARD)) | |
721 | seq_puts(seq, ",discard"); | |
722 | if (test_opt(sbi, NOHEAP)) | |
7a20b8a6 JK |
723 | seq_puts(seq, ",no_heap"); |
724 | else | |
725 | seq_puts(seq, ",heap"); | |
aff063e2 JK |
726 | #ifdef CONFIG_F2FS_FS_XATTR |
727 | if (test_opt(sbi, XATTR_USER)) | |
728 | seq_puts(seq, ",user_xattr"); | |
729 | else | |
730 | seq_puts(seq, ",nouser_xattr"); | |
444c580f JK |
731 | if (test_opt(sbi, INLINE_XATTR)) |
732 | seq_puts(seq, ",inline_xattr"); | |
23cf7212 CY |
733 | else |
734 | seq_puts(seq, ",noinline_xattr"); | |
aff063e2 JK |
735 | #endif |
736 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
737 | if (test_opt(sbi, POSIX_ACL)) | |
738 | seq_puts(seq, ",acl"); | |
739 | else | |
740 | seq_puts(seq, ",noacl"); | |
741 | #endif | |
742 | if (test_opt(sbi, DISABLE_EXT_IDENTIFY)) | |
aa43507f | 743 | seq_puts(seq, ",disable_ext_identify"); |
8274de77 HL |
744 | if (test_opt(sbi, INLINE_DATA)) |
745 | seq_puts(seq, ",inline_data"); | |
75342797 WL |
746 | else |
747 | seq_puts(seq, ",noinline_data"); | |
5efd3c6f CY |
748 | if (test_opt(sbi, INLINE_DENTRY)) |
749 | seq_puts(seq, ",inline_dentry"); | |
97c1794a CY |
750 | else |
751 | seq_puts(seq, ",noinline_dentry"); | |
b270ad6f | 752 | if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE)) |
6b4afdd7 | 753 | seq_puts(seq, ",flush_merge"); |
0f7b2abd JK |
754 | if (test_opt(sbi, NOBARRIER)) |
755 | seq_puts(seq, ",nobarrier"); | |
d5053a34 JK |
756 | if (test_opt(sbi, FASTBOOT)) |
757 | seq_puts(seq, ",fastboot"); | |
89672159 CY |
758 | if (test_opt(sbi, EXTENT_CACHE)) |
759 | seq_puts(seq, ",extent_cache"); | |
7daaea25 JK |
760 | else |
761 | seq_puts(seq, ",noextent_cache"); | |
343f40f0 CY |
762 | if (test_opt(sbi, DATA_FLUSH)) |
763 | seq_puts(seq, ",data_flush"); | |
36abef4e JK |
764 | |
765 | seq_puts(seq, ",mode="); | |
766 | if (test_opt(sbi, ADAPTIVE)) | |
767 | seq_puts(seq, "adaptive"); | |
768 | else if (test_opt(sbi, LFS)) | |
769 | seq_puts(seq, "lfs"); | |
aff063e2 | 770 | seq_printf(seq, ",active_logs=%u", sbi->active_logs); |
ec91538d JK |
771 | if (F2FS_IO_SIZE_BITS(sbi)) |
772 | seq_printf(seq, ",io_size=%uKB", F2FS_IO_SIZE_KB(sbi)); | |
0cc0dec2 KX |
773 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
774 | if (test_opt(sbi, FAULT_INJECTION)) | |
44529f89 CY |
775 | seq_printf(seq, ",fault_injection=%u", |
776 | sbi->fault_info.inject_rate); | |
0cc0dec2 | 777 | #endif |
aff063e2 JK |
778 | |
779 | return 0; | |
780 | } | |
781 | ||
498c5e9f YH |
782 | static void default_options(struct f2fs_sb_info *sbi) |
783 | { | |
784 | /* init some FS parameters */ | |
785 | sbi->active_logs = NR_CURSEG_TYPE; | |
786 | ||
787 | set_opt(sbi, BG_GC); | |
39133a50 | 788 | set_opt(sbi, INLINE_XATTR); |
498c5e9f | 789 | set_opt(sbi, INLINE_DATA); |
97c1794a | 790 | set_opt(sbi, INLINE_DENTRY); |
3e72f721 | 791 | set_opt(sbi, EXTENT_CACHE); |
7a20b8a6 | 792 | set_opt(sbi, NOHEAP); |
6d94c74a | 793 | sbi->sb->s_flags |= MS_LAZYTIME; |
69e9e427 | 794 | set_opt(sbi, FLUSH_MERGE); |
0bfd7a09 | 795 | if (f2fs_sb_mounted_blkzoned(sbi->sb)) { |
52763a4b JK |
796 | set_opt_mode(sbi, F2FS_MOUNT_LFS); |
797 | set_opt(sbi, DISCARD); | |
798 | } else { | |
799 | set_opt_mode(sbi, F2FS_MOUNT_ADAPTIVE); | |
800 | } | |
498c5e9f YH |
801 | |
802 | #ifdef CONFIG_F2FS_FS_XATTR | |
803 | set_opt(sbi, XATTR_USER); | |
804 | #endif | |
805 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
806 | set_opt(sbi, POSIX_ACL); | |
807 | #endif | |
36dbd328 CY |
808 | |
809 | #ifdef CONFIG_F2FS_FAULT_INJECTION | |
810 | f2fs_build_fault_attr(sbi, 0); | |
811 | #endif | |
498c5e9f YH |
812 | } |
813 | ||
696c018c NJ |
814 | static int f2fs_remount(struct super_block *sb, int *flags, char *data) |
815 | { | |
816 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
817 | struct f2fs_mount_info org_mount_opt; | |
818 | int err, active_logs; | |
876dc59e GZ |
819 | bool need_restart_gc = false; |
820 | bool need_stop_gc = false; | |
9cd81ce3 | 821 | bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE); |
2443b8b3 CY |
822 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
823 | struct f2fs_fault_info ffi = sbi->fault_info; | |
824 | #endif | |
696c018c NJ |
825 | |
826 | /* | |
827 | * Save the old mount options in case we | |
828 | * need to restore them. | |
829 | */ | |
830 | org_mount_opt = sbi->mount_opt; | |
831 | active_logs = sbi->active_logs; | |
832 | ||
df728b0f JK |
833 | /* recover superblocks we couldn't write due to previous RO mount */ |
834 | if (!(*flags & MS_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) { | |
835 | err = f2fs_commit_super(sbi, false); | |
836 | f2fs_msg(sb, KERN_INFO, | |
837 | "Try to recover all the superblocks, ret: %d", err); | |
838 | if (!err) | |
839 | clear_sbi_flag(sbi, SBI_NEED_SB_WRITE); | |
840 | } | |
841 | ||
26666c8a | 842 | sbi->mount_opt.opt = 0; |
498c5e9f | 843 | default_options(sbi); |
26666c8a | 844 | |
696c018c NJ |
845 | /* parse mount options */ |
846 | err = parse_options(sb, data); | |
847 | if (err) | |
848 | goto restore_opts; | |
849 | ||
850 | /* | |
851 | * Previous and new state of filesystem is RO, | |
876dc59e | 852 | * so skip checking GC and FLUSH_MERGE conditions. |
696c018c | 853 | */ |
6b2920a5 | 854 | if (f2fs_readonly(sb) && (*flags & MS_RDONLY)) |
696c018c NJ |
855 | goto skip; |
856 | ||
9cd81ce3 CY |
857 | /* disallow enable/disable extent_cache dynamically */ |
858 | if (no_extent_cache == !!test_opt(sbi, EXTENT_CACHE)) { | |
859 | err = -EINVAL; | |
860 | f2fs_msg(sbi->sb, KERN_WARNING, | |
861 | "switch extent_cache option is not allowed"); | |
862 | goto restore_opts; | |
863 | } | |
864 | ||
696c018c NJ |
865 | /* |
866 | * We stop the GC thread if FS is mounted as RO | |
867 | * or if background_gc = off is passed in mount | |
868 | * option. Also sync the filesystem. | |
869 | */ | |
870 | if ((*flags & MS_RDONLY) || !test_opt(sbi, BG_GC)) { | |
871 | if (sbi->gc_thread) { | |
872 | stop_gc_thread(sbi); | |
876dc59e | 873 | need_restart_gc = true; |
696c018c | 874 | } |
aba291b3 | 875 | } else if (!sbi->gc_thread) { |
696c018c NJ |
876 | err = start_gc_thread(sbi); |
877 | if (err) | |
878 | goto restore_opts; | |
876dc59e GZ |
879 | need_stop_gc = true; |
880 | } | |
881 | ||
faa0e55b JK |
882 | if (*flags & MS_RDONLY) { |
883 | writeback_inodes_sb(sb, WB_REASON_SYNC); | |
884 | sync_inodes_sb(sb); | |
885 | ||
886 | set_sbi_flag(sbi, SBI_IS_DIRTY); | |
887 | set_sbi_flag(sbi, SBI_IS_CLOSE); | |
888 | f2fs_sync_fs(sb, 1); | |
889 | clear_sbi_flag(sbi, SBI_IS_CLOSE); | |
890 | } | |
891 | ||
876dc59e GZ |
892 | /* |
893 | * We stop issue flush thread if FS is mounted as RO | |
894 | * or if flush_merge is not passed in mount option. | |
895 | */ | |
896 | if ((*flags & MS_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) { | |
5eba8c5d JK |
897 | clear_opt(sbi, FLUSH_MERGE); |
898 | destroy_flush_cmd_control(sbi, false); | |
899 | } else { | |
2163d198 GZ |
900 | err = create_flush_cmd_control(sbi); |
901 | if (err) | |
a688b9d9 | 902 | goto restore_gc; |
696c018c NJ |
903 | } |
904 | skip: | |
905 | /* Update the POSIXACL Flag */ | |
df728b0f | 906 | sb->s_flags = (sb->s_flags & ~MS_POSIXACL) | |
696c018c | 907 | (test_opt(sbi, POSIX_ACL) ? MS_POSIXACL : 0); |
df728b0f | 908 | |
696c018c | 909 | return 0; |
876dc59e GZ |
910 | restore_gc: |
911 | if (need_restart_gc) { | |
912 | if (start_gc_thread(sbi)) | |
913 | f2fs_msg(sbi->sb, KERN_WARNING, | |
e1c42045 | 914 | "background gc thread has stopped"); |
876dc59e GZ |
915 | } else if (need_stop_gc) { |
916 | stop_gc_thread(sbi); | |
917 | } | |
696c018c NJ |
918 | restore_opts: |
919 | sbi->mount_opt = org_mount_opt; | |
920 | sbi->active_logs = active_logs; | |
2443b8b3 CY |
921 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
922 | sbi->fault_info = ffi; | |
923 | #endif | |
696c018c NJ |
924 | return err; |
925 | } | |
926 | ||
aff063e2 JK |
927 | static struct super_operations f2fs_sops = { |
928 | .alloc_inode = f2fs_alloc_inode, | |
531ad7d5 | 929 | .drop_inode = f2fs_drop_inode, |
aff063e2 JK |
930 | .destroy_inode = f2fs_destroy_inode, |
931 | .write_inode = f2fs_write_inode, | |
b3783873 | 932 | .dirty_inode = f2fs_dirty_inode, |
aff063e2 JK |
933 | .show_options = f2fs_show_options, |
934 | .evict_inode = f2fs_evict_inode, | |
935 | .put_super = f2fs_put_super, | |
936 | .sync_fs = f2fs_sync_fs, | |
d6212a5f CL |
937 | .freeze_fs = f2fs_freeze, |
938 | .unfreeze_fs = f2fs_unfreeze, | |
aff063e2 | 939 | .statfs = f2fs_statfs, |
696c018c | 940 | .remount_fs = f2fs_remount, |
aff063e2 JK |
941 | }; |
942 | ||
0b81d077 JK |
943 | #ifdef CONFIG_F2FS_FS_ENCRYPTION |
944 | static int f2fs_get_context(struct inode *inode, void *ctx, size_t len) | |
945 | { | |
946 | return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION, | |
947 | F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, | |
948 | ctx, len, NULL); | |
949 | } | |
950 | ||
951 | static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len, | |
952 | void *fs_data) | |
953 | { | |
954 | return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION, | |
955 | F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, | |
956 | ctx, len, fs_data, XATTR_CREATE); | |
957 | } | |
958 | ||
959 | static unsigned f2fs_max_namelen(struct inode *inode) | |
960 | { | |
961 | return S_ISLNK(inode->i_mode) ? | |
962 | inode->i_sb->s_blocksize : F2FS_NAME_LEN; | |
963 | } | |
964 | ||
6f69f0ed | 965 | static const struct fscrypt_operations f2fs_cryptops = { |
a5d431ef | 966 | .key_prefix = "f2fs:", |
0b81d077 JK |
967 | .get_context = f2fs_get_context, |
968 | .set_context = f2fs_set_context, | |
969 | .is_encrypted = f2fs_encrypted_inode, | |
970 | .empty_dir = f2fs_empty_dir, | |
971 | .max_namelen = f2fs_max_namelen, | |
972 | }; | |
973 | #else | |
6f69f0ed | 974 | static const struct fscrypt_operations f2fs_cryptops = { |
0b81d077 JK |
975 | .is_encrypted = f2fs_encrypted_inode, |
976 | }; | |
977 | #endif | |
978 | ||
aff063e2 JK |
979 | static struct inode *f2fs_nfs_get_inode(struct super_block *sb, |
980 | u64 ino, u32 generation) | |
981 | { | |
982 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
983 | struct inode *inode; | |
984 | ||
d6b7d4b3 | 985 | if (check_nid_range(sbi, ino)) |
910bb12d | 986 | return ERR_PTR(-ESTALE); |
aff063e2 JK |
987 | |
988 | /* | |
989 | * f2fs_iget isn't quite right if the inode is currently unallocated! | |
990 | * However f2fs_iget currently does appropriate checks to handle stale | |
991 | * inodes so everything is OK. | |
992 | */ | |
993 | inode = f2fs_iget(sb, ino); | |
994 | if (IS_ERR(inode)) | |
995 | return ERR_CAST(inode); | |
6bacf52f | 996 | if (unlikely(generation && inode->i_generation != generation)) { |
aff063e2 JK |
997 | /* we didn't find the right inode.. */ |
998 | iput(inode); | |
999 | return ERR_PTR(-ESTALE); | |
1000 | } | |
1001 | return inode; | |
1002 | } | |
1003 | ||
1004 | static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid, | |
1005 | int fh_len, int fh_type) | |
1006 | { | |
1007 | return generic_fh_to_dentry(sb, fid, fh_len, fh_type, | |
1008 | f2fs_nfs_get_inode); | |
1009 | } | |
1010 | ||
1011 | static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid, | |
1012 | int fh_len, int fh_type) | |
1013 | { | |
1014 | return generic_fh_to_parent(sb, fid, fh_len, fh_type, | |
1015 | f2fs_nfs_get_inode); | |
1016 | } | |
1017 | ||
1018 | static const struct export_operations f2fs_export_ops = { | |
1019 | .fh_to_dentry = f2fs_fh_to_dentry, | |
1020 | .fh_to_parent = f2fs_fh_to_parent, | |
1021 | .get_parent = f2fs_get_parent, | |
1022 | }; | |
1023 | ||
e0afc4d6 | 1024 | static loff_t max_file_blocks(void) |
aff063e2 | 1025 | { |
de93653f | 1026 | loff_t result = (DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS); |
aff063e2 JK |
1027 | loff_t leaf_count = ADDRS_PER_BLOCK; |
1028 | ||
1029 | /* two direct node blocks */ | |
1030 | result += (leaf_count * 2); | |
1031 | ||
1032 | /* two indirect node blocks */ | |
1033 | leaf_count *= NIDS_PER_BLOCK; | |
1034 | result += (leaf_count * 2); | |
1035 | ||
1036 | /* one double indirect node block */ | |
1037 | leaf_count *= NIDS_PER_BLOCK; | |
1038 | result += leaf_count; | |
1039 | ||
aff063e2 JK |
1040 | return result; |
1041 | } | |
1042 | ||
fd694733 JK |
1043 | static int __f2fs_commit_super(struct buffer_head *bh, |
1044 | struct f2fs_super_block *super) | |
1045 | { | |
1046 | lock_buffer(bh); | |
1047 | if (super) | |
1048 | memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super)); | |
1049 | set_buffer_uptodate(bh); | |
1050 | set_buffer_dirty(bh); | |
1051 | unlock_buffer(bh); | |
1052 | ||
1053 | /* it's rare case, we can do fua all the time */ | |
3adc5fcb | 1054 | return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA); |
fd694733 JK |
1055 | } |
1056 | ||
df728b0f | 1057 | static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi, |
fd694733 | 1058 | struct buffer_head *bh) |
9a59b62f | 1059 | { |
fd694733 JK |
1060 | struct f2fs_super_block *raw_super = (struct f2fs_super_block *) |
1061 | (bh->b_data + F2FS_SUPER_OFFSET); | |
df728b0f | 1062 | struct super_block *sb = sbi->sb; |
9a59b62f CY |
1063 | u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr); |
1064 | u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr); | |
1065 | u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr); | |
1066 | u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr); | |
1067 | u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr); | |
1068 | u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr); | |
1069 | u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt); | |
1070 | u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit); | |
1071 | u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat); | |
1072 | u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa); | |
1073 | u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main); | |
1074 | u32 segment_count = le32_to_cpu(raw_super->segment_count); | |
1075 | u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); | |
fd694733 JK |
1076 | u64 main_end_blkaddr = main_blkaddr + |
1077 | (segment_count_main << log_blocks_per_seg); | |
1078 | u64 seg_end_blkaddr = segment0_blkaddr + | |
1079 | (segment_count << log_blocks_per_seg); | |
9a59b62f CY |
1080 | |
1081 | if (segment0_blkaddr != cp_blkaddr) { | |
1082 | f2fs_msg(sb, KERN_INFO, | |
1083 | "Mismatch start address, segment0(%u) cp_blkaddr(%u)", | |
1084 | segment0_blkaddr, cp_blkaddr); | |
1085 | return true; | |
1086 | } | |
1087 | ||
1088 | if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) != | |
1089 | sit_blkaddr) { | |
1090 | f2fs_msg(sb, KERN_INFO, | |
1091 | "Wrong CP boundary, start(%u) end(%u) blocks(%u)", | |
1092 | cp_blkaddr, sit_blkaddr, | |
1093 | segment_count_ckpt << log_blocks_per_seg); | |
1094 | return true; | |
1095 | } | |
1096 | ||
1097 | if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) != | |
1098 | nat_blkaddr) { | |
1099 | f2fs_msg(sb, KERN_INFO, | |
1100 | "Wrong SIT boundary, start(%u) end(%u) blocks(%u)", | |
1101 | sit_blkaddr, nat_blkaddr, | |
1102 | segment_count_sit << log_blocks_per_seg); | |
1103 | return true; | |
1104 | } | |
1105 | ||
1106 | if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) != | |
1107 | ssa_blkaddr) { | |
1108 | f2fs_msg(sb, KERN_INFO, | |
1109 | "Wrong NAT boundary, start(%u) end(%u) blocks(%u)", | |
1110 | nat_blkaddr, ssa_blkaddr, | |
1111 | segment_count_nat << log_blocks_per_seg); | |
1112 | return true; | |
1113 | } | |
1114 | ||
1115 | if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) != | |
1116 | main_blkaddr) { | |
1117 | f2fs_msg(sb, KERN_INFO, | |
1118 | "Wrong SSA boundary, start(%u) end(%u) blocks(%u)", | |
1119 | ssa_blkaddr, main_blkaddr, | |
1120 | segment_count_ssa << log_blocks_per_seg); | |
1121 | return true; | |
1122 | } | |
1123 | ||
fd694733 | 1124 | if (main_end_blkaddr > seg_end_blkaddr) { |
9a59b62f | 1125 | f2fs_msg(sb, KERN_INFO, |
fd694733 | 1126 | "Wrong MAIN_AREA boundary, start(%u) end(%u) block(%u)", |
9a59b62f | 1127 | main_blkaddr, |
fd694733 JK |
1128 | segment0_blkaddr + |
1129 | (segment_count << log_blocks_per_seg), | |
9a59b62f CY |
1130 | segment_count_main << log_blocks_per_seg); |
1131 | return true; | |
fd694733 JK |
1132 | } else if (main_end_blkaddr < seg_end_blkaddr) { |
1133 | int err = 0; | |
1134 | char *res; | |
1135 | ||
1136 | /* fix in-memory information all the time */ | |
1137 | raw_super->segment_count = cpu_to_le32((main_end_blkaddr - | |
1138 | segment0_blkaddr) >> log_blocks_per_seg); | |
1139 | ||
1140 | if (f2fs_readonly(sb) || bdev_read_only(sb->s_bdev)) { | |
df728b0f | 1141 | set_sbi_flag(sbi, SBI_NEED_SB_WRITE); |
fd694733 JK |
1142 | res = "internally"; |
1143 | } else { | |
1144 | err = __f2fs_commit_super(bh, NULL); | |
1145 | res = err ? "failed" : "done"; | |
1146 | } | |
1147 | f2fs_msg(sb, KERN_INFO, | |
1148 | "Fix alignment : %s, start(%u) end(%u) block(%u)", | |
1149 | res, main_blkaddr, | |
1150 | segment0_blkaddr + | |
1151 | (segment_count << log_blocks_per_seg), | |
1152 | segment_count_main << log_blocks_per_seg); | |
1153 | if (err) | |
1154 | return true; | |
9a59b62f | 1155 | } |
9a59b62f CY |
1156 | return false; |
1157 | } | |
1158 | ||
df728b0f | 1159 | static int sanity_check_raw_super(struct f2fs_sb_info *sbi, |
fd694733 | 1160 | struct buffer_head *bh) |
aff063e2 | 1161 | { |
fd694733 JK |
1162 | struct f2fs_super_block *raw_super = (struct f2fs_super_block *) |
1163 | (bh->b_data + F2FS_SUPER_OFFSET); | |
df728b0f | 1164 | struct super_block *sb = sbi->sb; |
aff063e2 JK |
1165 | unsigned int blocksize; |
1166 | ||
a07ef784 NJ |
1167 | if (F2FS_SUPER_MAGIC != le32_to_cpu(raw_super->magic)) { |
1168 | f2fs_msg(sb, KERN_INFO, | |
1169 | "Magic Mismatch, valid(0x%x) - read(0x%x)", | |
1170 | F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic)); | |
aff063e2 | 1171 | return 1; |
a07ef784 | 1172 | } |
aff063e2 | 1173 | |
5c9b4692 | 1174 | /* Currently, support only 4KB page cache size */ |
09cbfeaf | 1175 | if (F2FS_BLKSIZE != PAGE_SIZE) { |
5c9b4692 | 1176 | f2fs_msg(sb, KERN_INFO, |
14d7e9de | 1177 | "Invalid page_cache_size (%lu), supports only 4KB\n", |
09cbfeaf | 1178 | PAGE_SIZE); |
5c9b4692 | 1179 | return 1; |
1180 | } | |
1181 | ||
aff063e2 JK |
1182 | /* Currently, support only 4KB block size */ |
1183 | blocksize = 1 << le32_to_cpu(raw_super->log_blocksize); | |
5c9b4692 | 1184 | if (blocksize != F2FS_BLKSIZE) { |
a07ef784 NJ |
1185 | f2fs_msg(sb, KERN_INFO, |
1186 | "Invalid blocksize (%u), supports only 4KB\n", | |
1187 | blocksize); | |
aff063e2 | 1188 | return 1; |
a07ef784 | 1189 | } |
5c9b4692 | 1190 | |
9a59b62f CY |
1191 | /* check log blocks per segment */ |
1192 | if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) { | |
1193 | f2fs_msg(sb, KERN_INFO, | |
1194 | "Invalid log blocks per segment (%u)\n", | |
1195 | le32_to_cpu(raw_super->log_blocks_per_seg)); | |
1196 | return 1; | |
1197 | } | |
1198 | ||
55cf9cb6 CY |
1199 | /* Currently, support 512/1024/2048/4096 bytes sector size */ |
1200 | if (le32_to_cpu(raw_super->log_sectorsize) > | |
1201 | F2FS_MAX_LOG_SECTOR_SIZE || | |
1202 | le32_to_cpu(raw_super->log_sectorsize) < | |
1203 | F2FS_MIN_LOG_SECTOR_SIZE) { | |
1204 | f2fs_msg(sb, KERN_INFO, "Invalid log sectorsize (%u)", | |
1205 | le32_to_cpu(raw_super->log_sectorsize)); | |
aff063e2 | 1206 | return 1; |
a07ef784 | 1207 | } |
55cf9cb6 CY |
1208 | if (le32_to_cpu(raw_super->log_sectors_per_block) + |
1209 | le32_to_cpu(raw_super->log_sectorsize) != | |
1210 | F2FS_MAX_LOG_SECTOR_SIZE) { | |
1211 | f2fs_msg(sb, KERN_INFO, | |
1212 | "Invalid log sectors per block(%u) log sectorsize(%u)", | |
1213 | le32_to_cpu(raw_super->log_sectors_per_block), | |
1214 | le32_to_cpu(raw_super->log_sectorsize)); | |
aff063e2 | 1215 | return 1; |
a07ef784 | 1216 | } |
9a59b62f CY |
1217 | |
1218 | /* check reserved ino info */ | |
1219 | if (le32_to_cpu(raw_super->node_ino) != 1 || | |
1220 | le32_to_cpu(raw_super->meta_ino) != 2 || | |
1221 | le32_to_cpu(raw_super->root_ino) != 3) { | |
1222 | f2fs_msg(sb, KERN_INFO, | |
1223 | "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)", | |
1224 | le32_to_cpu(raw_super->node_ino), | |
1225 | le32_to_cpu(raw_super->meta_ino), | |
1226 | le32_to_cpu(raw_super->root_ino)); | |
1227 | return 1; | |
1228 | } | |
1229 | ||
b9dd4618 JQ |
1230 | if (le32_to_cpu(raw_super->segment_count) > F2FS_MAX_SEGMENT) { |
1231 | f2fs_msg(sb, KERN_INFO, | |
1232 | "Invalid segment count (%u)", | |
1233 | le32_to_cpu(raw_super->segment_count)); | |
1234 | return 1; | |
1235 | } | |
1236 | ||
9a59b62f | 1237 | /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */ |
df728b0f | 1238 | if (sanity_check_area_boundary(sbi, bh)) |
9a59b62f CY |
1239 | return 1; |
1240 | ||
aff063e2 JK |
1241 | return 0; |
1242 | } | |
1243 | ||
984ec63c | 1244 | int sanity_check_ckpt(struct f2fs_sb_info *sbi) |
aff063e2 JK |
1245 | { |
1246 | unsigned int total, fsmeta; | |
577e3495 JK |
1247 | struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); |
1248 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
2040fce8 | 1249 | unsigned int ovp_segments, reserved_segments; |
15d3042a JQ |
1250 | unsigned int main_segs, blocks_per_seg; |
1251 | int i; | |
aff063e2 JK |
1252 | |
1253 | total = le32_to_cpu(raw_super->segment_count); | |
1254 | fsmeta = le32_to_cpu(raw_super->segment_count_ckpt); | |
1255 | fsmeta += le32_to_cpu(raw_super->segment_count_sit); | |
1256 | fsmeta += le32_to_cpu(raw_super->segment_count_nat); | |
1257 | fsmeta += le32_to_cpu(ckpt->rsvd_segment_count); | |
1258 | fsmeta += le32_to_cpu(raw_super->segment_count_ssa); | |
1259 | ||
6bacf52f | 1260 | if (unlikely(fsmeta >= total)) |
aff063e2 | 1261 | return 1; |
577e3495 | 1262 | |
2040fce8 JK |
1263 | ovp_segments = le32_to_cpu(ckpt->overprov_segment_count); |
1264 | reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count); | |
1265 | ||
1266 | if (unlikely(fsmeta < F2FS_MIN_SEGMENTS || | |
1267 | ovp_segments == 0 || reserved_segments == 0)) { | |
1268 | f2fs_msg(sbi->sb, KERN_ERR, | |
1269 | "Wrong layout: check mkfs.f2fs version"); | |
1270 | return 1; | |
1271 | } | |
1272 | ||
15d3042a JQ |
1273 | main_segs = le32_to_cpu(raw_super->segment_count_main); |
1274 | blocks_per_seg = sbi->blocks_per_seg; | |
1275 | ||
1276 | for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { | |
1277 | if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs || | |
1278 | le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg) | |
1279 | return 1; | |
1280 | } | |
1281 | for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) { | |
1282 | if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs || | |
1283 | le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg) | |
1284 | return 1; | |
1285 | } | |
1286 | ||
1e968fdf | 1287 | if (unlikely(f2fs_cp_error(sbi))) { |
577e3495 JK |
1288 | f2fs_msg(sbi->sb, KERN_ERR, "A bug case: need to run fsck"); |
1289 | return 1; | |
1290 | } | |
aff063e2 JK |
1291 | return 0; |
1292 | } | |
1293 | ||
1294 | static void init_sb_info(struct f2fs_sb_info *sbi) | |
1295 | { | |
1296 | struct f2fs_super_block *raw_super = sbi->raw_super; | |
e41e6d75 | 1297 | int i, j; |
aff063e2 JK |
1298 | |
1299 | sbi->log_sectors_per_block = | |
1300 | le32_to_cpu(raw_super->log_sectors_per_block); | |
1301 | sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize); | |
1302 | sbi->blocksize = 1 << sbi->log_blocksize; | |
1303 | sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); | |
1304 | sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg; | |
1305 | sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec); | |
1306 | sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone); | |
1307 | sbi->total_sections = le32_to_cpu(raw_super->section_count); | |
1308 | sbi->total_node_count = | |
1309 | (le32_to_cpu(raw_super->segment_count_nat) / 2) | |
1310 | * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK; | |
1311 | sbi->root_ino_num = le32_to_cpu(raw_super->root_ino); | |
1312 | sbi->node_ino_num = le32_to_cpu(raw_super->node_ino); | |
1313 | sbi->meta_ino_num = le32_to_cpu(raw_super->meta_ino); | |
5ec4e49f | 1314 | sbi->cur_victim_sec = NULL_SECNO; |
b1c57c1c | 1315 | sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH; |
aff063e2 | 1316 | |
ab9fa662 | 1317 | sbi->dir_level = DEF_DIR_LEVEL; |
6beceb54 | 1318 | sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL; |
d0239e1b | 1319 | sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL; |
caf0047e | 1320 | clear_sbi_flag(sbi, SBI_NEED_FSCK); |
2658e50d | 1321 | |
35782b23 JK |
1322 | for (i = 0; i < NR_COUNT_TYPE; i++) |
1323 | atomic_set(&sbi->nr_pages[i], 0); | |
1324 | ||
687de7f1 JK |
1325 | atomic_set(&sbi->wb_sync_req, 0); |
1326 | ||
2658e50d JK |
1327 | INIT_LIST_HEAD(&sbi->s_list); |
1328 | mutex_init(&sbi->umount_mutex); | |
e41e6d75 CY |
1329 | for (i = 0; i < NR_PAGE_TYPE - 1; i++) |
1330 | for (j = HOT; j < NR_TEMP_TYPE; j++) | |
1331 | mutex_init(&sbi->wio_mutex[i][j]); | |
aaec2b1d | 1332 | spin_lock_init(&sbi->cp_lock); |
aff063e2 JK |
1333 | } |
1334 | ||
523be8a6 JK |
1335 | static int init_percpu_info(struct f2fs_sb_info *sbi) |
1336 | { | |
35782b23 | 1337 | int err; |
41382ec4 | 1338 | |
513c5f37 JK |
1339 | err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL); |
1340 | if (err) | |
1341 | return err; | |
1342 | ||
1343 | return percpu_counter_init(&sbi->total_valid_inode_count, 0, | |
41382ec4 | 1344 | GFP_KERNEL); |
523be8a6 JK |
1345 | } |
1346 | ||
178053e2 | 1347 | #ifdef CONFIG_BLK_DEV_ZONED |
3c62be17 | 1348 | static int init_blkz_info(struct f2fs_sb_info *sbi, int devi) |
178053e2 | 1349 | { |
3c62be17 | 1350 | struct block_device *bdev = FDEV(devi).bdev; |
178053e2 DLM |
1351 | sector_t nr_sectors = bdev->bd_part->nr_sects; |
1352 | sector_t sector = 0; | |
1353 | struct blk_zone *zones; | |
1354 | unsigned int i, nr_zones; | |
1355 | unsigned int n = 0; | |
1356 | int err = -EIO; | |
1357 | ||
1358 | if (!f2fs_sb_mounted_blkzoned(sbi->sb)) | |
1359 | return 0; | |
1360 | ||
3c62be17 | 1361 | if (sbi->blocks_per_blkz && sbi->blocks_per_blkz != |
f99e8648 | 1362 | SECTOR_TO_BLOCK(bdev_zone_sectors(bdev))) |
3c62be17 | 1363 | return -EINVAL; |
f99e8648 | 1364 | sbi->blocks_per_blkz = SECTOR_TO_BLOCK(bdev_zone_sectors(bdev)); |
3c62be17 JK |
1365 | if (sbi->log_blocks_per_blkz && sbi->log_blocks_per_blkz != |
1366 | __ilog2_u32(sbi->blocks_per_blkz)) | |
1367 | return -EINVAL; | |
178053e2 | 1368 | sbi->log_blocks_per_blkz = __ilog2_u32(sbi->blocks_per_blkz); |
3c62be17 JK |
1369 | FDEV(devi).nr_blkz = SECTOR_TO_BLOCK(nr_sectors) >> |
1370 | sbi->log_blocks_per_blkz; | |
f99e8648 | 1371 | if (nr_sectors & (bdev_zone_sectors(bdev) - 1)) |
3c62be17 | 1372 | FDEV(devi).nr_blkz++; |
178053e2 | 1373 | |
3c62be17 JK |
1374 | FDEV(devi).blkz_type = kmalloc(FDEV(devi).nr_blkz, GFP_KERNEL); |
1375 | if (!FDEV(devi).blkz_type) | |
178053e2 DLM |
1376 | return -ENOMEM; |
1377 | ||
1378 | #define F2FS_REPORT_NR_ZONES 4096 | |
1379 | ||
1380 | zones = kcalloc(F2FS_REPORT_NR_ZONES, sizeof(struct blk_zone), | |
1381 | GFP_KERNEL); | |
1382 | if (!zones) | |
1383 | return -ENOMEM; | |
1384 | ||
1385 | /* Get block zones type */ | |
1386 | while (zones && sector < nr_sectors) { | |
1387 | ||
1388 | nr_zones = F2FS_REPORT_NR_ZONES; | |
1389 | err = blkdev_report_zones(bdev, sector, | |
1390 | zones, &nr_zones, | |
1391 | GFP_KERNEL); | |
1392 | if (err) | |
1393 | break; | |
1394 | if (!nr_zones) { | |
1395 | err = -EIO; | |
1396 | break; | |
1397 | } | |
1398 | ||
1399 | for (i = 0; i < nr_zones; i++) { | |
3c62be17 | 1400 | FDEV(devi).blkz_type[n] = zones[i].type; |
178053e2 DLM |
1401 | sector += zones[i].len; |
1402 | n++; | |
1403 | } | |
1404 | } | |
1405 | ||
1406 | kfree(zones); | |
1407 | ||
1408 | return err; | |
1409 | } | |
1410 | #endif | |
1411 | ||
9076a75f GZ |
1412 | /* |
1413 | * Read f2fs raw super block. | |
2b39e907 SL |
1414 | * Because we have two copies of super block, so read both of them |
1415 | * to get the first valid one. If any one of them is broken, we pass | |
1416 | * them recovery flag back to the caller. | |
9076a75f | 1417 | */ |
df728b0f | 1418 | static int read_raw_super_block(struct f2fs_sb_info *sbi, |
9076a75f | 1419 | struct f2fs_super_block **raw_super, |
e8240f65 | 1420 | int *valid_super_block, int *recovery) |
14d7e9de | 1421 | { |
df728b0f | 1422 | struct super_block *sb = sbi->sb; |
2b39e907 | 1423 | int block; |
e8240f65 | 1424 | struct buffer_head *bh; |
fd694733 | 1425 | struct f2fs_super_block *super; |
da554e48 | 1426 | int err = 0; |
14d7e9de | 1427 | |
b39f0de2 YH |
1428 | super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL); |
1429 | if (!super) | |
1430 | return -ENOMEM; | |
2b39e907 SL |
1431 | |
1432 | for (block = 0; block < 2; block++) { | |
1433 | bh = sb_bread(sb, block); | |
1434 | if (!bh) { | |
1435 | f2fs_msg(sb, KERN_ERR, "Unable to read %dth superblock", | |
9076a75f | 1436 | block + 1); |
2b39e907 SL |
1437 | err = -EIO; |
1438 | continue; | |
1439 | } | |
14d7e9de | 1440 | |
2b39e907 | 1441 | /* sanity checking of raw super */ |
df728b0f | 1442 | if (sanity_check_raw_super(sbi, bh)) { |
2b39e907 SL |
1443 | f2fs_msg(sb, KERN_ERR, |
1444 | "Can't find valid F2FS filesystem in %dth superblock", | |
1445 | block + 1); | |
1446 | err = -EINVAL; | |
1447 | brelse(bh); | |
1448 | continue; | |
1449 | } | |
14d7e9de | 1450 | |
2b39e907 | 1451 | if (!*raw_super) { |
fd694733 JK |
1452 | memcpy(super, bh->b_data + F2FS_SUPER_OFFSET, |
1453 | sizeof(*super)); | |
2b39e907 SL |
1454 | *valid_super_block = block; |
1455 | *raw_super = super; | |
1456 | } | |
1457 | brelse(bh); | |
da554e48 | 1458 | } |
1459 | ||
2b39e907 SL |
1460 | /* Fail to read any one of the superblocks*/ |
1461 | if (err < 0) | |
1462 | *recovery = 1; | |
da554e48 | 1463 | |
da554e48 | 1464 | /* No valid superblock */ |
2b39e907 | 1465 | if (!*raw_super) |
b39f0de2 | 1466 | kfree(super); |
2b39e907 SL |
1467 | else |
1468 | err = 0; | |
da554e48 | 1469 | |
2b39e907 | 1470 | return err; |
14d7e9de | 1471 | } |
1472 | ||
fd694733 | 1473 | int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover) |
26d815ad | 1474 | { |
5d909cdb | 1475 | struct buffer_head *bh; |
26d815ad JK |
1476 | int err; |
1477 | ||
df728b0f JK |
1478 | if ((recover && f2fs_readonly(sbi->sb)) || |
1479 | bdev_read_only(sbi->sb->s_bdev)) { | |
1480 | set_sbi_flag(sbi, SBI_NEED_SB_WRITE); | |
f2353d7b | 1481 | return -EROFS; |
df728b0f | 1482 | } |
f2353d7b | 1483 | |
fd694733 JK |
1484 | /* write back-up superblock first */ |
1485 | bh = sb_getblk(sbi->sb, sbi->valid_super_block ? 0: 1); | |
5d909cdb JK |
1486 | if (!bh) |
1487 | return -EIO; | |
fd694733 | 1488 | err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi)); |
5d909cdb | 1489 | brelse(bh); |
c5bda1c8 CY |
1490 | |
1491 | /* if we are in recovery path, skip writing valid superblock */ | |
1492 | if (recover || err) | |
5d909cdb | 1493 | return err; |
26d815ad JK |
1494 | |
1495 | /* write current valid superblock */ | |
fd694733 JK |
1496 | bh = sb_getblk(sbi->sb, sbi->valid_super_block); |
1497 | if (!bh) | |
1498 | return -EIO; | |
1499 | err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi)); | |
1500 | brelse(bh); | |
1501 | return err; | |
26d815ad JK |
1502 | } |
1503 | ||
3c62be17 JK |
1504 | static int f2fs_scan_devices(struct f2fs_sb_info *sbi) |
1505 | { | |
1506 | struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); | |
7bb3a371 | 1507 | unsigned int max_devices = MAX_DEVICES; |
3c62be17 JK |
1508 | int i; |
1509 | ||
7bb3a371 MS |
1510 | /* Initialize single device information */ |
1511 | if (!RDEV(0).path[0]) { | |
1512 | if (!bdev_is_zoned(sbi->sb->s_bdev)) | |
3c62be17 | 1513 | return 0; |
7bb3a371 MS |
1514 | max_devices = 1; |
1515 | } | |
3c62be17 | 1516 | |
7bb3a371 MS |
1517 | /* |
1518 | * Initialize multiple devices information, or single | |
1519 | * zoned block device information. | |
1520 | */ | |
1521 | sbi->devs = kcalloc(max_devices, sizeof(struct f2fs_dev_info), | |
1522 | GFP_KERNEL); | |
1523 | if (!sbi->devs) | |
1524 | return -ENOMEM; | |
3c62be17 | 1525 | |
7bb3a371 | 1526 | for (i = 0; i < max_devices; i++) { |
3c62be17 | 1527 | |
7bb3a371 MS |
1528 | if (i > 0 && !RDEV(i).path[0]) |
1529 | break; | |
1530 | ||
1531 | if (max_devices == 1) { | |
1532 | /* Single zoned block device mount */ | |
1533 | FDEV(0).bdev = | |
1534 | blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev, | |
3c62be17 | 1535 | sbi->sb->s_mode, sbi->sb->s_type); |
7bb3a371 MS |
1536 | } else { |
1537 | /* Multi-device mount */ | |
1538 | memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN); | |
1539 | FDEV(i).total_segments = | |
1540 | le32_to_cpu(RDEV(i).total_segments); | |
1541 | if (i == 0) { | |
1542 | FDEV(i).start_blk = 0; | |
1543 | FDEV(i).end_blk = FDEV(i).start_blk + | |
1544 | (FDEV(i).total_segments << | |
1545 | sbi->log_blocks_per_seg) - 1 + | |
1546 | le32_to_cpu(raw_super->segment0_blkaddr); | |
1547 | } else { | |
1548 | FDEV(i).start_blk = FDEV(i - 1).end_blk + 1; | |
1549 | FDEV(i).end_blk = FDEV(i).start_blk + | |
1550 | (FDEV(i).total_segments << | |
1551 | sbi->log_blocks_per_seg) - 1; | |
1552 | } | |
1553 | FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path, | |
3c62be17 | 1554 | sbi->sb->s_mode, sbi->sb->s_type); |
7bb3a371 | 1555 | } |
3c62be17 JK |
1556 | if (IS_ERR(FDEV(i).bdev)) |
1557 | return PTR_ERR(FDEV(i).bdev); | |
1558 | ||
1559 | /* to release errored devices */ | |
1560 | sbi->s_ndevs = i + 1; | |
1561 | ||
1562 | #ifdef CONFIG_BLK_DEV_ZONED | |
1563 | if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM && | |
1564 | !f2fs_sb_mounted_blkzoned(sbi->sb)) { | |
1565 | f2fs_msg(sbi->sb, KERN_ERR, | |
1566 | "Zoned block device feature not enabled\n"); | |
1567 | return -EINVAL; | |
1568 | } | |
1569 | if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) { | |
1570 | if (init_blkz_info(sbi, i)) { | |
1571 | f2fs_msg(sbi->sb, KERN_ERR, | |
1572 | "Failed to initialize F2FS blkzone information"); | |
1573 | return -EINVAL; | |
1574 | } | |
7bb3a371 MS |
1575 | if (max_devices == 1) |
1576 | break; | |
3c62be17 JK |
1577 | f2fs_msg(sbi->sb, KERN_INFO, |
1578 | "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)", | |
1579 | i, FDEV(i).path, | |
1580 | FDEV(i).total_segments, | |
1581 | FDEV(i).start_blk, FDEV(i).end_blk, | |
1582 | bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ? | |
1583 | "Host-aware" : "Host-managed"); | |
1584 | continue; | |
1585 | } | |
1586 | #endif | |
1587 | f2fs_msg(sbi->sb, KERN_INFO, | |
1588 | "Mount Device [%2d]: %20s, %8u, %8x - %8x", | |
1589 | i, FDEV(i).path, | |
1590 | FDEV(i).total_segments, | |
1591 | FDEV(i).start_blk, FDEV(i).end_blk); | |
1592 | } | |
0a595eba JK |
1593 | f2fs_msg(sbi->sb, KERN_INFO, |
1594 | "IO Block Size: %8d KB", F2FS_IO_SIZE_KB(sbi)); | |
3c62be17 JK |
1595 | return 0; |
1596 | } | |
1597 | ||
aff063e2 JK |
1598 | static int f2fs_fill_super(struct super_block *sb, void *data, int silent) |
1599 | { | |
1600 | struct f2fs_sb_info *sbi; | |
da554e48 | 1601 | struct f2fs_super_block *raw_super; |
aff063e2 | 1602 | struct inode *root; |
99e3e858 | 1603 | int err; |
2adc3505 | 1604 | bool retry = true, need_fsck = false; |
dabc4a5c | 1605 | char *options = NULL; |
e8240f65 | 1606 | int recovery, i, valid_super_block; |
8f1dbbbb | 1607 | struct curseg_info *seg_i; |
aff063e2 | 1608 | |
ed2e621a | 1609 | try_onemore: |
da554e48 | 1610 | err = -EINVAL; |
1611 | raw_super = NULL; | |
e8240f65 | 1612 | valid_super_block = -1; |
da554e48 | 1613 | recovery = 0; |
1614 | ||
aff063e2 JK |
1615 | /* allocate memory for f2fs-specific super block info */ |
1616 | sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL); | |
1617 | if (!sbi) | |
1618 | return -ENOMEM; | |
1619 | ||
df728b0f JK |
1620 | sbi->sb = sb; |
1621 | ||
43b6573b KM |
1622 | /* Load the checksum driver */ |
1623 | sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0); | |
1624 | if (IS_ERR(sbi->s_chksum_driver)) { | |
1625 | f2fs_msg(sb, KERN_ERR, "Cannot load crc32 driver."); | |
1626 | err = PTR_ERR(sbi->s_chksum_driver); | |
1627 | sbi->s_chksum_driver = NULL; | |
1628 | goto free_sbi; | |
1629 | } | |
1630 | ||
ff9234ad | 1631 | /* set a block size */ |
6bacf52f | 1632 | if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) { |
a07ef784 | 1633 | f2fs_msg(sb, KERN_ERR, "unable to set blocksize"); |
aff063e2 | 1634 | goto free_sbi; |
a07ef784 | 1635 | } |
aff063e2 | 1636 | |
df728b0f | 1637 | err = read_raw_super_block(sbi, &raw_super, &valid_super_block, |
e8240f65 | 1638 | &recovery); |
9076a75f GZ |
1639 | if (err) |
1640 | goto free_sbi; | |
1641 | ||
5fb08372 | 1642 | sb->s_fs_info = sbi; |
52763a4b JK |
1643 | sbi->raw_super = raw_super; |
1644 | ||
d1b959c8 DLM |
1645 | /* |
1646 | * The BLKZONED feature indicates that the drive was formatted with | |
1647 | * zone alignment optimization. This is optional for host-aware | |
1648 | * devices, but mandatory for host-managed zoned block devices. | |
1649 | */ | |
1650 | #ifndef CONFIG_BLK_DEV_ZONED | |
1651 | if (f2fs_sb_mounted_blkzoned(sb)) { | |
1652 | f2fs_msg(sb, KERN_ERR, | |
1653 | "Zoned block device support is not enabled\n"); | |
1727f317 | 1654 | err = -EOPNOTSUPP; |
d1b959c8 DLM |
1655 | goto free_sb_buf; |
1656 | } | |
d1b959c8 | 1657 | #endif |
498c5e9f | 1658 | default_options(sbi); |
aff063e2 | 1659 | /* parse mount options */ |
dabc4a5c JK |
1660 | options = kstrdup((const char *)data, GFP_KERNEL); |
1661 | if (data && !options) { | |
1662 | err = -ENOMEM; | |
aff063e2 | 1663 | goto free_sb_buf; |
dabc4a5c JK |
1664 | } |
1665 | ||
1666 | err = parse_options(sb, options); | |
1667 | if (err) | |
1668 | goto free_options; | |
aff063e2 | 1669 | |
e0afc4d6 CY |
1670 | sbi->max_file_blocks = max_file_blocks(); |
1671 | sb->s_maxbytes = sbi->max_file_blocks << | |
1672 | le32_to_cpu(raw_super->log_blocksize); | |
aff063e2 JK |
1673 | sb->s_max_links = F2FS_LINK_MAX; |
1674 | get_random_bytes(&sbi->s_next_generation, sizeof(u32)); | |
1675 | ||
1676 | sb->s_op = &f2fs_sops; | |
0b81d077 | 1677 | sb->s_cop = &f2fs_cryptops; |
aff063e2 JK |
1678 | sb->s_xattr = f2fs_xattr_handlers; |
1679 | sb->s_export_op = &f2fs_export_ops; | |
1680 | sb->s_magic = F2FS_SUPER_MAGIC; | |
aff063e2 JK |
1681 | sb->s_time_gran = 1; |
1682 | sb->s_flags = (sb->s_flags & ~MS_POSIXACL) | | |
1683 | (test_opt(sbi, POSIX_ACL) ? MS_POSIXACL : 0); | |
1684 | memcpy(sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid)); | |
1685 | ||
1686 | /* init f2fs-specific super block info */ | |
e8240f65 | 1687 | sbi->valid_super_block = valid_super_block; |
aff063e2 | 1688 | mutex_init(&sbi->gc_mutex); |
aff063e2 | 1689 | mutex_init(&sbi->cp_mutex); |
b3582c68 | 1690 | init_rwsem(&sbi->node_write); |
59c9081b | 1691 | init_rwsem(&sbi->node_change); |
315df839 JK |
1692 | |
1693 | /* disallow all the data/node/meta page writes */ | |
1694 | set_sbi_flag(sbi, SBI_POR_DOING); | |
aff063e2 | 1695 | spin_lock_init(&sbi->stat_lock); |
971767ca | 1696 | |
458e6197 | 1697 | for (i = 0; i < NR_PAGE_TYPE; i++) { |
a912b54d JK |
1698 | int n = (i == META) ? 1: NR_TEMP_TYPE; |
1699 | int j; | |
1700 | ||
1701 | sbi->write_io[i] = kmalloc(n * sizeof(struct f2fs_bio_info), | |
1702 | GFP_KERNEL); | |
b63def91 CJ |
1703 | if (!sbi->write_io[i]) { |
1704 | err = -ENOMEM; | |
a912b54d | 1705 | goto free_options; |
b63def91 | 1706 | } |
a912b54d JK |
1707 | |
1708 | for (j = HOT; j < n; j++) { | |
1709 | init_rwsem(&sbi->write_io[i][j].io_rwsem); | |
1710 | sbi->write_io[i][j].sbi = sbi; | |
1711 | sbi->write_io[i][j].bio = NULL; | |
fb830fc5 CY |
1712 | spin_lock_init(&sbi->write_io[i][j].io_lock); |
1713 | INIT_LIST_HEAD(&sbi->write_io[i][j].io_list); | |
a912b54d | 1714 | } |
458e6197 | 1715 | } |
971767ca | 1716 | |
b873b798 | 1717 | init_rwsem(&sbi->cp_rwsem); |
fb51b5ef | 1718 | init_waitqueue_head(&sbi->cp_wait); |
aff063e2 JK |
1719 | init_sb_info(sbi); |
1720 | ||
523be8a6 JK |
1721 | err = init_percpu_info(sbi); |
1722 | if (err) | |
1723 | goto free_options; | |
1724 | ||
0a595eba JK |
1725 | if (F2FS_IO_SIZE(sbi) > 1) { |
1726 | sbi->write_io_dummy = | |
a3ebfe4f | 1727 | mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0); |
1727f317 CY |
1728 | if (!sbi->write_io_dummy) { |
1729 | err = -ENOMEM; | |
0a595eba | 1730 | goto free_options; |
1727f317 | 1731 | } |
0a595eba JK |
1732 | } |
1733 | ||
aff063e2 JK |
1734 | /* get an inode for meta space */ |
1735 | sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi)); | |
1736 | if (IS_ERR(sbi->meta_inode)) { | |
a07ef784 | 1737 | f2fs_msg(sb, KERN_ERR, "Failed to read F2FS meta data inode"); |
aff063e2 | 1738 | err = PTR_ERR(sbi->meta_inode); |
0a595eba | 1739 | goto free_io_dummy; |
aff063e2 JK |
1740 | } |
1741 | ||
1742 | err = get_valid_checkpoint(sbi); | |
a07ef784 NJ |
1743 | if (err) { |
1744 | f2fs_msg(sb, KERN_ERR, "Failed to get valid F2FS checkpoint"); | |
aff063e2 | 1745 | goto free_meta_inode; |
a07ef784 | 1746 | } |
aff063e2 | 1747 | |
3c62be17 JK |
1748 | /* Initialize device list */ |
1749 | err = f2fs_scan_devices(sbi); | |
1750 | if (err) { | |
1751 | f2fs_msg(sb, KERN_ERR, "Failed to find devices"); | |
1752 | goto free_devices; | |
1753 | } | |
1754 | ||
aff063e2 JK |
1755 | sbi->total_valid_node_count = |
1756 | le32_to_cpu(sbi->ckpt->valid_node_count); | |
513c5f37 JK |
1757 | percpu_counter_set(&sbi->total_valid_inode_count, |
1758 | le32_to_cpu(sbi->ckpt->valid_inode_count)); | |
aff063e2 JK |
1759 | sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count); |
1760 | sbi->total_valid_block_count = | |
1761 | le64_to_cpu(sbi->ckpt->valid_block_count); | |
1762 | sbi->last_valid_block_count = sbi->total_valid_block_count; | |
41382ec4 | 1763 | |
c227f912 CY |
1764 | for (i = 0; i < NR_INODE_TYPE; i++) { |
1765 | INIT_LIST_HEAD(&sbi->inode_list[i]); | |
1766 | spin_lock_init(&sbi->inode_lock[i]); | |
1767 | } | |
aff063e2 | 1768 | |
1dcc336b CY |
1769 | init_extent_cache_info(sbi); |
1770 | ||
6451e041 | 1771 | init_ino_entry_info(sbi); |
aff063e2 JK |
1772 | |
1773 | /* setup f2fs internal modules */ | |
1774 | err = build_segment_manager(sbi); | |
a07ef784 NJ |
1775 | if (err) { |
1776 | f2fs_msg(sb, KERN_ERR, | |
1777 | "Failed to initialize F2FS segment manager"); | |
aff063e2 | 1778 | goto free_sm; |
a07ef784 | 1779 | } |
aff063e2 | 1780 | err = build_node_manager(sbi); |
a07ef784 NJ |
1781 | if (err) { |
1782 | f2fs_msg(sb, KERN_ERR, | |
1783 | "Failed to initialize F2FS node manager"); | |
aff063e2 | 1784 | goto free_nm; |
a07ef784 | 1785 | } |
aff063e2 | 1786 | |
8f1dbbbb SL |
1787 | /* For write statistics */ |
1788 | if (sb->s_bdev->bd_part) | |
1789 | sbi->sectors_written_start = | |
1790 | (u64)part_stat_read(sb->s_bdev->bd_part, sectors[1]); | |
1791 | ||
1792 | /* Read accumulated write IO statistics if exists */ | |
1793 | seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE); | |
1794 | if (__exist_node_summaries(sbi)) | |
1795 | sbi->kbytes_written = | |
b2dde6fc | 1796 | le64_to_cpu(seg_i->journal->info.kbytes_written); |
8f1dbbbb | 1797 | |
aff063e2 JK |
1798 | build_gc_manager(sbi); |
1799 | ||
1800 | /* get an inode for node space */ | |
1801 | sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi)); | |
1802 | if (IS_ERR(sbi->node_inode)) { | |
a07ef784 | 1803 | f2fs_msg(sb, KERN_ERR, "Failed to read node inode"); |
aff063e2 JK |
1804 | err = PTR_ERR(sbi->node_inode); |
1805 | goto free_nm; | |
1806 | } | |
1807 | ||
2658e50d JK |
1808 | f2fs_join_shrinker(sbi); |
1809 | ||
aa51d08a JK |
1810 | err = f2fs_build_stats(sbi); |
1811 | if (err) | |
1812 | goto free_nm; | |
1813 | ||
aff063e2 | 1814 | /* if there are nt orphan nodes free them */ |
8c14bfad CY |
1815 | err = recover_orphan_inodes(sbi); |
1816 | if (err) | |
1817 | goto free_node_inode; | |
aff063e2 JK |
1818 | |
1819 | /* read root inode and dentry */ | |
1820 | root = f2fs_iget(sb, F2FS_ROOT_INO(sbi)); | |
1821 | if (IS_ERR(root)) { | |
a07ef784 | 1822 | f2fs_msg(sb, KERN_ERR, "Failed to read root inode"); |
aff063e2 JK |
1823 | err = PTR_ERR(root); |
1824 | goto free_node_inode; | |
1825 | } | |
8f99a946 | 1826 | if (!S_ISDIR(root->i_mode) || !root->i_blocks || !root->i_size) { |
9d847950 | 1827 | iput(root); |
8f99a946 | 1828 | err = -EINVAL; |
9d847950 | 1829 | goto free_node_inode; |
8f99a946 | 1830 | } |
aff063e2 JK |
1831 | |
1832 | sb->s_root = d_make_root(root); /* allocate root dentry */ | |
1833 | if (!sb->s_root) { | |
1834 | err = -ENOMEM; | |
1835 | goto free_root_inode; | |
1836 | } | |
1837 | ||
a398101a | 1838 | err = f2fs_init_sysfs(sbi); |
b59d0bae | 1839 | if (err) |
a398101a | 1840 | goto free_root_inode; |
b59d0bae | 1841 | |
6437d1b0 JK |
1842 | /* recover fsynced data */ |
1843 | if (!test_opt(sbi, DISABLE_ROLL_FORWARD)) { | |
081d78c2 JK |
1844 | /* |
1845 | * mount should be failed, when device has readonly mode, and | |
1846 | * previous checkpoint was not done by clean system shutdown. | |
1847 | */ | |
1848 | if (bdev_read_only(sb->s_bdev) && | |
aaec2b1d | 1849 | !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) { |
081d78c2 | 1850 | err = -EROFS; |
a398101a | 1851 | goto free_sysfs; |
081d78c2 | 1852 | } |
2adc3505 CY |
1853 | |
1854 | if (need_fsck) | |
1855 | set_sbi_flag(sbi, SBI_NEED_FSCK); | |
1856 | ||
a468f0ef JK |
1857 | if (!retry) |
1858 | goto skip_recovery; | |
1859 | ||
6781eabb JK |
1860 | err = recover_fsync_data(sbi, false); |
1861 | if (err < 0) { | |
2adc3505 | 1862 | need_fsck = true; |
6437d1b0 | 1863 | f2fs_msg(sb, KERN_ERR, |
99e3e858 | 1864 | "Cannot recover all fsync data errno=%d", err); |
a398101a | 1865 | goto free_sysfs; |
ed2e621a | 1866 | } |
6781eabb JK |
1867 | } else { |
1868 | err = recover_fsync_data(sbi, true); | |
1869 | ||
1870 | if (!f2fs_readonly(sb) && err > 0) { | |
1871 | err = -EINVAL; | |
1872 | f2fs_msg(sb, KERN_ERR, | |
1873 | "Need to recover fsync data"); | |
a398101a | 1874 | goto free_sysfs; |
6781eabb | 1875 | } |
6437d1b0 | 1876 | } |
a468f0ef | 1877 | skip_recovery: |
315df839 JK |
1878 | /* recover_fsync_data() cleared this already */ |
1879 | clear_sbi_flag(sbi, SBI_POR_DOING); | |
b59d0bae | 1880 | |
6437d1b0 JK |
1881 | /* |
1882 | * If filesystem is not mounted as read-only then | |
1883 | * do start the gc_thread. | |
1884 | */ | |
6c029932 | 1885 | if (test_opt(sbi, BG_GC) && !f2fs_readonly(sb)) { |
6437d1b0 JK |
1886 | /* After POR, we can run background GC thread.*/ |
1887 | err = start_gc_thread(sbi); | |
1888 | if (err) | |
a398101a | 1889 | goto free_sysfs; |
6437d1b0 | 1890 | } |
dabc4a5c | 1891 | kfree(options); |
da554e48 | 1892 | |
1893 | /* recover broken superblock */ | |
f2353d7b | 1894 | if (recovery) { |
41214b3c CY |
1895 | err = f2fs_commit_super(sbi, true); |
1896 | f2fs_msg(sb, KERN_INFO, | |
99e3e858 | 1897 | "Try to recover %dth superblock, ret: %d", |
41214b3c | 1898 | sbi->valid_super_block ? 1 : 2, err); |
da554e48 | 1899 | } |
1900 | ||
1200abb2 JK |
1901 | f2fs_msg(sbi->sb, KERN_NOTICE, "Mounted with checkpoint version = %llx", |
1902 | cur_cp_version(F2FS_CKPT(sbi))); | |
6beceb54 | 1903 | f2fs_update_time(sbi, CP_TIME); |
d0239e1b | 1904 | f2fs_update_time(sbi, REQ_TIME); |
aff063e2 | 1905 | return 0; |
6437d1b0 | 1906 | |
a398101a | 1907 | free_sysfs: |
0f18b462 | 1908 | f2fs_sync_inode_meta(sbi); |
a398101a | 1909 | f2fs_exit_sysfs(sbi); |
aff063e2 JK |
1910 | free_root_inode: |
1911 | dput(sb->s_root); | |
1912 | sb->s_root = NULL; | |
1913 | free_node_inode: | |
bb5dada7 | 1914 | truncate_inode_pages_final(NODE_MAPPING(sbi)); |
2658e50d | 1915 | mutex_lock(&sbi->umount_mutex); |
d41065e2 | 1916 | release_ino_entry(sbi, true); |
2658e50d | 1917 | f2fs_leave_shrinker(sbi); |
09922800 JK |
1918 | /* |
1919 | * Some dirty meta pages can be produced by recover_orphan_inodes() | |
1920 | * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg() | |
1921 | * followed by write_checkpoint() through f2fs_write_node_pages(), which | |
1922 | * falls into an infinite loop in sync_meta_pages(). | |
1923 | */ | |
1924 | truncate_inode_pages_final(META_MAPPING(sbi)); | |
aff063e2 | 1925 | iput(sbi->node_inode); |
2658e50d | 1926 | mutex_unlock(&sbi->umount_mutex); |
aa51d08a | 1927 | f2fs_destroy_stats(sbi); |
aff063e2 JK |
1928 | free_nm: |
1929 | destroy_node_manager(sbi); | |
1930 | free_sm: | |
1931 | destroy_segment_manager(sbi); | |
3c62be17 JK |
1932 | free_devices: |
1933 | destroy_device_list(sbi); | |
aff063e2 JK |
1934 | kfree(sbi->ckpt); |
1935 | free_meta_inode: | |
1936 | make_bad_inode(sbi->meta_inode); | |
1937 | iput(sbi->meta_inode); | |
0a595eba JK |
1938 | free_io_dummy: |
1939 | mempool_destroy(sbi->write_io_dummy); | |
dabc4a5c | 1940 | free_options: |
a912b54d JK |
1941 | for (i = 0; i < NR_PAGE_TYPE; i++) |
1942 | kfree(sbi->write_io[i]); | |
523be8a6 | 1943 | destroy_percpu_info(sbi); |
dabc4a5c | 1944 | kfree(options); |
aff063e2 | 1945 | free_sb_buf: |
b39f0de2 | 1946 | kfree(raw_super); |
aff063e2 | 1947 | free_sbi: |
43b6573b KM |
1948 | if (sbi->s_chksum_driver) |
1949 | crypto_free_shash(sbi->s_chksum_driver); | |
aff063e2 | 1950 | kfree(sbi); |
ed2e621a JK |
1951 | |
1952 | /* give only one another chance */ | |
1953 | if (retry) { | |
9df47ba7 | 1954 | retry = false; |
ed2e621a JK |
1955 | shrink_dcache_sb(sb); |
1956 | goto try_onemore; | |
1957 | } | |
aff063e2 JK |
1958 | return err; |
1959 | } | |
1960 | ||
1961 | static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags, | |
1962 | const char *dev_name, void *data) | |
1963 | { | |
1964 | return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super); | |
1965 | } | |
1966 | ||
30a5537f JK |
1967 | static void kill_f2fs_super(struct super_block *sb) |
1968 | { | |
1969 | if (sb->s_root) | |
caf0047e | 1970 | set_sbi_flag(F2FS_SB(sb), SBI_IS_CLOSE); |
30a5537f JK |
1971 | kill_block_super(sb); |
1972 | } | |
1973 | ||
aff063e2 JK |
1974 | static struct file_system_type f2fs_fs_type = { |
1975 | .owner = THIS_MODULE, | |
1976 | .name = "f2fs", | |
1977 | .mount = f2fs_mount, | |
30a5537f | 1978 | .kill_sb = kill_f2fs_super, |
aff063e2 JK |
1979 | .fs_flags = FS_REQUIRES_DEV, |
1980 | }; | |
7f78e035 | 1981 | MODULE_ALIAS_FS("f2fs"); |
aff063e2 | 1982 | |
6e6093a8 | 1983 | static int __init init_inodecache(void) |
aff063e2 | 1984 | { |
5d097056 VD |
1985 | f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache", |
1986 | sizeof(struct f2fs_inode_info), 0, | |
1987 | SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL); | |
6bacf52f | 1988 | if (!f2fs_inode_cachep) |
aff063e2 JK |
1989 | return -ENOMEM; |
1990 | return 0; | |
1991 | } | |
1992 | ||
1993 | static void destroy_inodecache(void) | |
1994 | { | |
1995 | /* | |
1996 | * Make sure all delayed rcu free inodes are flushed before we | |
1997 | * destroy cache. | |
1998 | */ | |
1999 | rcu_barrier(); | |
2000 | kmem_cache_destroy(f2fs_inode_cachep); | |
2001 | } | |
2002 | ||
2003 | static int __init init_f2fs_fs(void) | |
2004 | { | |
2005 | int err; | |
2006 | ||
c0508650 JK |
2007 | f2fs_build_trace_ios(); |
2008 | ||
aff063e2 JK |
2009 | err = init_inodecache(); |
2010 | if (err) | |
2011 | goto fail; | |
2012 | err = create_node_manager_caches(); | |
2013 | if (err) | |
9890ff3f | 2014 | goto free_inodecache; |
7fd9e544 | 2015 | err = create_segment_manager_caches(); |
aff063e2 | 2016 | if (err) |
9890ff3f | 2017 | goto free_node_manager_caches; |
aff063e2 JK |
2018 | err = create_checkpoint_caches(); |
2019 | if (err) | |
06292073 | 2020 | goto free_segment_manager_caches; |
1dcc336b CY |
2021 | err = create_extent_cache(); |
2022 | if (err) | |
2023 | goto free_checkpoint_caches; | |
a398101a CY |
2024 | err = f2fs_register_sysfs(); |
2025 | if (err) | |
1dcc336b | 2026 | goto free_extent_cache; |
2658e50d | 2027 | err = register_shrinker(&f2fs_shrinker_info); |
cfc4d971 | 2028 | if (err) |
a398101a | 2029 | goto free_sysfs; |
2658e50d JK |
2030 | err = register_filesystem(&f2fs_fs_type); |
2031 | if (err) | |
2032 | goto free_shrinker; | |
787c7b8c CY |
2033 | err = f2fs_create_root_stats(); |
2034 | if (err) | |
2035 | goto free_filesystem; | |
9890ff3f ZH |
2036 | return 0; |
2037 | ||
787c7b8c CY |
2038 | free_filesystem: |
2039 | unregister_filesystem(&f2fs_fs_type); | |
2658e50d JK |
2040 | free_shrinker: |
2041 | unregister_shrinker(&f2fs_shrinker_info); | |
a398101a CY |
2042 | free_sysfs: |
2043 | f2fs_unregister_sysfs(); | |
1dcc336b CY |
2044 | free_extent_cache: |
2045 | destroy_extent_cache(); | |
9890ff3f ZH |
2046 | free_checkpoint_caches: |
2047 | destroy_checkpoint_caches(); | |
7fd9e544 JK |
2048 | free_segment_manager_caches: |
2049 | destroy_segment_manager_caches(); | |
9890ff3f ZH |
2050 | free_node_manager_caches: |
2051 | destroy_node_manager_caches(); | |
2052 | free_inodecache: | |
2053 | destroy_inodecache(); | |
aff063e2 JK |
2054 | fail: |
2055 | return err; | |
2056 | } | |
2057 | ||
2058 | static void __exit exit_f2fs_fs(void) | |
2059 | { | |
4589d25d | 2060 | f2fs_destroy_root_stats(); |
aff063e2 | 2061 | unregister_filesystem(&f2fs_fs_type); |
b8bef79d | 2062 | unregister_shrinker(&f2fs_shrinker_info); |
a398101a | 2063 | f2fs_unregister_sysfs(); |
fdf6c8be | 2064 | destroy_extent_cache(); |
aff063e2 | 2065 | destroy_checkpoint_caches(); |
5dcd8a71 | 2066 | destroy_segment_manager_caches(); |
aff063e2 JK |
2067 | destroy_node_manager_caches(); |
2068 | destroy_inodecache(); | |
351f4fba | 2069 | f2fs_destroy_trace_ios(); |
aff063e2 JK |
2070 | } |
2071 | ||
2072 | module_init(init_f2fs_fs) | |
2073 | module_exit(exit_f2fs_fs) | |
2074 | ||
2075 | MODULE_AUTHOR("Samsung Electronics's Praesto Team"); | |
2076 | MODULE_DESCRIPTION("Flash Friendly File System"); | |
2077 | MODULE_LICENSE("GPL"); | |
b4b9d34c | 2078 |