1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * fs/f2fs/super.c
4 *
5 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
6 * http://www.samsung.com/
7 */
8 #include <linux/module.h>
9 #include <linux/init.h>
10 #include <linux/fs.h>
11 #include <linux/statfs.h>
12 #include <linux/buffer_head.h>
13 #include <linux/backing-dev.h>
14 #include <linux/kthread.h>
15 #include <linux/parser.h>
16 #include <linux/mount.h>
17 #include <linux/seq_file.h>
18 #include <linux/proc_fs.h>
19 #include <linux/random.h>
20 #include <linux/exportfs.h>
21 #include <linux/blkdev.h>
22 #include <linux/quotaops.h>
23 #include <linux/f2fs_fs.h>
24 #include <linux/sysfs.h>
25 #include <linux/quota.h>
26 #include <linux/unicode.h>
27 #include <linux/part_stat.h>
28 #include <linux/zstd.h>
29 #include <linux/lz4.h>
30
31 #include "f2fs.h"
32 #include "node.h"
33 #include "segment.h"
34 #include "xattr.h"
35 #include "gc.h"
36
37 #define CREATE_TRACE_POINTS
38 #include <trace/events/f2fs.h>
39
40 static struct kmem_cache *f2fs_inode_cachep;
41
42 #ifdef CONFIG_F2FS_FAULT_INJECTION
43
44 const char *f2fs_fault_name[FAULT_MAX] = {
45 [FAULT_KMALLOC] = "kmalloc",
46 [FAULT_KVMALLOC] = "kvmalloc",
47 [FAULT_PAGE_ALLOC] = "page alloc",
48 [FAULT_PAGE_GET] = "page get",
49 [FAULT_ALLOC_NID] = "alloc nid",
50 [FAULT_ORPHAN] = "orphan",
51 [FAULT_BLOCK] = "no more block",
52 [FAULT_DIR_DEPTH] = "too big dir depth",
53 [FAULT_EVICT_INODE] = "evict_inode fail",
54 [FAULT_TRUNCATE] = "truncate fail",
55 [FAULT_READ_IO] = "read IO error",
56 [FAULT_CHECKPOINT] = "checkpoint error",
57 [FAULT_DISCARD] = "discard error",
58 [FAULT_WRITE_IO] = "write IO error",
59 };
60
f2fs_build_fault_attr(struct f2fs_sb_info * sbi,unsigned int rate,unsigned int type)61 void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate,
62 unsigned int type)
63 {
64 struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info;
65
66 if (rate) {
67 atomic_set(&ffi->inject_ops, 0);
68 ffi->inject_rate = rate;
69 }
70
71 if (type)
72 ffi->inject_type = type;
73
74 if (!rate && !type)
75 memset(ffi, 0, sizeof(struct f2fs_fault_info));
76 }
77 #endif
78
79 /* f2fs-wide shrinker description */
80 static struct shrinker f2fs_shrinker_info = {
81 .scan_objects = f2fs_shrink_scan,
82 .count_objects = f2fs_shrink_count,
83 .seeks = DEFAULT_SEEKS,
84 };
85
86 enum {
87 Opt_gc_background,
88 Opt_disable_roll_forward,
89 Opt_norecovery,
90 Opt_discard,
91 Opt_nodiscard,
92 Opt_noheap,
93 Opt_heap,
94 Opt_user_xattr,
95 Opt_nouser_xattr,
96 Opt_acl,
97 Opt_noacl,
98 Opt_active_logs,
99 Opt_disable_ext_identify,
100 Opt_inline_xattr,
101 Opt_noinline_xattr,
102 Opt_inline_xattr_size,
103 Opt_inline_data,
104 Opt_inline_dentry,
105 Opt_noinline_dentry,
106 Opt_flush_merge,
107 Opt_noflush_merge,
108 Opt_nobarrier,
109 Opt_fastboot,
110 Opt_extent_cache,
111 Opt_noextent_cache,
112 Opt_noinline_data,
113 Opt_data_flush,
114 Opt_reserve_root,
115 Opt_resgid,
116 Opt_resuid,
117 Opt_mode,
118 Opt_io_size_bits,
119 Opt_fault_injection,
120 Opt_fault_type,
121 Opt_lazytime,
122 Opt_nolazytime,
123 Opt_quota,
124 Opt_noquota,
125 Opt_usrquota,
126 Opt_grpquota,
127 Opt_prjquota,
128 Opt_usrjquota,
129 Opt_grpjquota,
130 Opt_prjjquota,
131 Opt_offusrjquota,
132 Opt_offgrpjquota,
133 Opt_offprjjquota,
134 Opt_jqfmt_vfsold,
135 Opt_jqfmt_vfsv0,
136 Opt_jqfmt_vfsv1,
137 Opt_whint,
138 Opt_alloc,
139 Opt_fsync,
140 Opt_test_dummy_encryption,
141 Opt_inlinecrypt,
142 Opt_checkpoint_disable,
143 Opt_checkpoint_disable_cap,
144 Opt_checkpoint_disable_cap_perc,
145 Opt_checkpoint_enable,
146 Opt_checkpoint_merge,
147 Opt_nocheckpoint_merge,
148 Opt_compress_algorithm,
149 Opt_compress_log_size,
150 Opt_compress_extension,
151 Opt_compress_chksum,
152 Opt_compress_mode,
153 Opt_atgc,
154 Opt_gc_merge,
155 Opt_nogc_merge,
156 Opt_err,
157 };
158
159 static match_table_t f2fs_tokens = {
160 {Opt_gc_background, "background_gc=%s"},
161 {Opt_disable_roll_forward, "disable_roll_forward"},
162 {Opt_norecovery, "norecovery"},
163 {Opt_discard, "discard"},
164 {Opt_nodiscard, "nodiscard"},
165 {Opt_noheap, "no_heap"},
166 {Opt_heap, "heap"},
167 {Opt_user_xattr, "user_xattr"},
168 {Opt_nouser_xattr, "nouser_xattr"},
169 {Opt_acl, "acl"},
170 {Opt_noacl, "noacl"},
171 {Opt_active_logs, "active_logs=%u"},
172 {Opt_disable_ext_identify, "disable_ext_identify"},
173 {Opt_inline_xattr, "inline_xattr"},
174 {Opt_noinline_xattr, "noinline_xattr"},
175 {Opt_inline_xattr_size, "inline_xattr_size=%u"},
176 {Opt_inline_data, "inline_data"},
177 {Opt_inline_dentry, "inline_dentry"},
178 {Opt_noinline_dentry, "noinline_dentry"},
179 {Opt_flush_merge, "flush_merge"},
180 {Opt_noflush_merge, "noflush_merge"},
181 {Opt_nobarrier, "nobarrier"},
182 {Opt_fastboot, "fastboot"},
183 {Opt_extent_cache, "extent_cache"},
184 {Opt_noextent_cache, "noextent_cache"},
185 {Opt_noinline_data, "noinline_data"},
186 {Opt_data_flush, "data_flush"},
187 {Opt_reserve_root, "reserve_root=%u"},
188 {Opt_resgid, "resgid=%u"},
189 {Opt_resuid, "resuid=%u"},
190 {Opt_mode, "mode=%s"},
191 {Opt_io_size_bits, "io_bits=%u"},
192 {Opt_fault_injection, "fault_injection=%u"},
193 {Opt_fault_type, "fault_type=%u"},
194 {Opt_lazytime, "lazytime"},
195 {Opt_nolazytime, "nolazytime"},
196 {Opt_quota, "quota"},
197 {Opt_noquota, "noquota"},
198 {Opt_usrquota, "usrquota"},
199 {Opt_grpquota, "grpquota"},
200 {Opt_prjquota, "prjquota"},
201 {Opt_usrjquota, "usrjquota=%s"},
202 {Opt_grpjquota, "grpjquota=%s"},
203 {Opt_prjjquota, "prjjquota=%s"},
204 {Opt_offusrjquota, "usrjquota="},
205 {Opt_offgrpjquota, "grpjquota="},
206 {Opt_offprjjquota, "prjjquota="},
207 {Opt_jqfmt_vfsold, "jqfmt=vfsold"},
208 {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"},
209 {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"},
210 {Opt_whint, "whint_mode=%s"},
211 {Opt_alloc, "alloc_mode=%s"},
212 {Opt_fsync, "fsync_mode=%s"},
213 {Opt_test_dummy_encryption, "test_dummy_encryption=%s"},
214 {Opt_test_dummy_encryption, "test_dummy_encryption"},
215 {Opt_inlinecrypt, "inlinecrypt"},
216 {Opt_checkpoint_disable, "checkpoint=disable"},
217 {Opt_checkpoint_disable_cap, "checkpoint=disable:%u"},
218 {Opt_checkpoint_disable_cap_perc, "checkpoint=disable:%u%%"},
219 {Opt_checkpoint_enable, "checkpoint=enable"},
220 {Opt_checkpoint_merge, "checkpoint_merge"},
221 {Opt_nocheckpoint_merge, "nocheckpoint_merge"},
222 {Opt_compress_algorithm, "compress_algorithm=%s"},
223 {Opt_compress_log_size, "compress_log_size=%u"},
224 {Opt_compress_extension, "compress_extension=%s"},
225 {Opt_compress_chksum, "compress_chksum"},
226 {Opt_compress_mode, "compress_mode=%s"},
227 {Opt_atgc, "atgc"},
228 {Opt_gc_merge, "gc_merge"},
229 {Opt_nogc_merge, "nogc_merge"},
230 {Opt_err, NULL},
231 };
232
f2fs_printk(struct f2fs_sb_info * sbi,const char * fmt,...)233 void f2fs_printk(struct f2fs_sb_info *sbi, const char *fmt, ...)
234 {
235 struct va_format vaf;
236 va_list args;
237 int level;
238
239 va_start(args, fmt);
240
241 level = printk_get_level(fmt);
242 vaf.fmt = printk_skip_level(fmt);
243 vaf.va = &args;
244 printk("%c%cF2FS-fs (%s): %pV\n",
245 KERN_SOH_ASCII, level, sbi->sb->s_id, &vaf);
246
247 va_end(args);
248 }
249
250 #ifdef CONFIG_UNICODE
251 static const struct f2fs_sb_encodings {
252 __u16 magic;
253 char *name;
254 char *version;
255 } f2fs_sb_encoding_map[] = {
256 {F2FS_ENC_UTF8_12_1, "utf8", "12.1.0"},
257 };
258
f2fs_sb_read_encoding(const struct f2fs_super_block * sb,const struct f2fs_sb_encodings ** encoding,__u16 * flags)259 static int f2fs_sb_read_encoding(const struct f2fs_super_block *sb,
260 const struct f2fs_sb_encodings **encoding,
261 __u16 *flags)
262 {
263 __u16 magic = le16_to_cpu(sb->s_encoding);
264 int i;
265
266 for (i = 0; i < ARRAY_SIZE(f2fs_sb_encoding_map); i++)
267 if (magic == f2fs_sb_encoding_map[i].magic)
268 break;
269
270 if (i >= ARRAY_SIZE(f2fs_sb_encoding_map))
271 return -EINVAL;
272
273 *encoding = &f2fs_sb_encoding_map[i];
274 *flags = le16_to_cpu(sb->s_encoding_flags);
275
276 return 0;
277 }
278 #endif
279
limit_reserve_root(struct f2fs_sb_info * sbi)280 static inline void limit_reserve_root(struct f2fs_sb_info *sbi)
281 {
282 block_t limit = min((sbi->user_block_count << 1) / 1000,
283 sbi->user_block_count - sbi->reserved_blocks);
284
285 /* limit is 0.2% */
286 if (test_opt(sbi, RESERVE_ROOT) &&
287 F2FS_OPTION(sbi).root_reserved_blocks > limit) {
288 F2FS_OPTION(sbi).root_reserved_blocks = limit;
289 f2fs_info(sbi, "Reduce reserved blocks for root = %u",
290 F2FS_OPTION(sbi).root_reserved_blocks);
291 }
292 if (!test_opt(sbi, RESERVE_ROOT) &&
293 (!uid_eq(F2FS_OPTION(sbi).s_resuid,
294 make_kuid(&init_user_ns, F2FS_DEF_RESUID)) ||
295 !gid_eq(F2FS_OPTION(sbi).s_resgid,
296 make_kgid(&init_user_ns, F2FS_DEF_RESGID))))
297 f2fs_info(sbi, "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root",
298 from_kuid_munged(&init_user_ns,
299 F2FS_OPTION(sbi).s_resuid),
300 from_kgid_munged(&init_user_ns,
301 F2FS_OPTION(sbi).s_resgid));
302 }
303
adjust_unusable_cap_perc(struct f2fs_sb_info * sbi)304 static inline void adjust_unusable_cap_perc(struct f2fs_sb_info *sbi)
305 {
306 if (!F2FS_OPTION(sbi).unusable_cap_perc)
307 return;
308
309 if (F2FS_OPTION(sbi).unusable_cap_perc == 100)
310 F2FS_OPTION(sbi).unusable_cap = sbi->user_block_count;
311 else
312 F2FS_OPTION(sbi).unusable_cap = (sbi->user_block_count / 100) *
313 F2FS_OPTION(sbi).unusable_cap_perc;
314
315 f2fs_info(sbi, "Adjust unusable cap for checkpoint=disable = %u / %u%%",
316 F2FS_OPTION(sbi).unusable_cap,
317 F2FS_OPTION(sbi).unusable_cap_perc);
318 }
319
init_once(void * foo)320 static void init_once(void *foo)
321 {
322 struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo;
323
324 inode_init_once(&fi->vfs_inode);
325 }
326
327 #ifdef CONFIG_QUOTA
328 static const char * const quotatypes[] = INITQFNAMES;
329 #define QTYPE2NAME(t) (quotatypes[t])
f2fs_set_qf_name(struct super_block * sb,int qtype,substring_t * args)330 static int f2fs_set_qf_name(struct super_block *sb, int qtype,
331 substring_t *args)
332 {
333 struct f2fs_sb_info *sbi = F2FS_SB(sb);
334 char *qname;
335 int ret = -EINVAL;
336
337 if (sb_any_quota_loaded(sb) && !F2FS_OPTION(sbi).s_qf_names[qtype]) {
338 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on");
339 return -EINVAL;
340 }
341 if (f2fs_sb_has_quota_ino(sbi)) {
342 f2fs_info(sbi, "QUOTA feature is enabled, so ignore qf_name");
343 return 0;
344 }
345
346 qname = match_strdup(args);
347 if (!qname) {
348 f2fs_err(sbi, "Not enough memory for storing quotafile name");
349 return -ENOMEM;
350 }
351 if (F2FS_OPTION(sbi).s_qf_names[qtype]) {
352 if (strcmp(F2FS_OPTION(sbi).s_qf_names[qtype], qname) == 0)
353 ret = 0;
354 else
355 f2fs_err(sbi, "%s quota file already specified",
356 QTYPE2NAME(qtype));
357 goto errout;
358 }
359 if (strchr(qname, '/')) {
360 f2fs_err(sbi, "quotafile must be on filesystem root");
361 goto errout;
362 }
363 F2FS_OPTION(sbi).s_qf_names[qtype] = qname;
364 set_opt(sbi, QUOTA);
365 return 0;
366 errout:
367 kfree(qname);
368 return ret;
369 }
370
f2fs_clear_qf_name(struct super_block * sb,int qtype)371 static int f2fs_clear_qf_name(struct super_block *sb, int qtype)
372 {
373 struct f2fs_sb_info *sbi = F2FS_SB(sb);
374
375 if (sb_any_quota_loaded(sb) && F2FS_OPTION(sbi).s_qf_names[qtype]) {
376 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on");
377 return -EINVAL;
378 }
379 kfree(F2FS_OPTION(sbi).s_qf_names[qtype]);
380 F2FS_OPTION(sbi).s_qf_names[qtype] = NULL;
381 return 0;
382 }
383
f2fs_check_quota_options(struct f2fs_sb_info * sbi)384 static int f2fs_check_quota_options(struct f2fs_sb_info *sbi)
385 {
386 /*
387 * We do the test below only for project quotas. 'usrquota' and
388 * 'grpquota' mount options are allowed even without quota feature
389 * to support legacy quotas in quota files.
390 */
391 if (test_opt(sbi, PRJQUOTA) && !f2fs_sb_has_project_quota(sbi)) {
392 f2fs_err(sbi, "Project quota feature not enabled. Cannot enable project quota enforcement.");
393 return -1;
394 }
395 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] ||
396 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] ||
397 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) {
398 if (test_opt(sbi, USRQUOTA) &&
399 F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
400 clear_opt(sbi, USRQUOTA);
401
402 if (test_opt(sbi, GRPQUOTA) &&
403 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
404 clear_opt(sbi, GRPQUOTA);
405
406 if (test_opt(sbi, PRJQUOTA) &&
407 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
408 clear_opt(sbi, PRJQUOTA);
409
410 if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) ||
411 test_opt(sbi, PRJQUOTA)) {
412 f2fs_err(sbi, "old and new quota format mixing");
413 return -1;
414 }
415
416 if (!F2FS_OPTION(sbi).s_jquota_fmt) {
417 f2fs_err(sbi, "journaled quota format not specified");
418 return -1;
419 }
420 }
421
422 if (f2fs_sb_has_quota_ino(sbi) && F2FS_OPTION(sbi).s_jquota_fmt) {
423 f2fs_info(sbi, "QUOTA feature is enabled, so ignore jquota_fmt");
424 F2FS_OPTION(sbi).s_jquota_fmt = 0;
425 }
426 return 0;
427 }
428 #endif
429
f2fs_set_test_dummy_encryption(struct super_block * sb,const char * opt,const substring_t * arg,bool is_remount)430 static int f2fs_set_test_dummy_encryption(struct super_block *sb,
431 const char *opt,
432 const substring_t *arg,
433 bool is_remount)
434 {
435 struct f2fs_sb_info *sbi = F2FS_SB(sb);
436 #ifdef CONFIG_FS_ENCRYPTION
437 int err;
438
439 if (!f2fs_sb_has_encrypt(sbi)) {
440 f2fs_err(sbi, "Encrypt feature is off");
441 return -EINVAL;
442 }
443
444 /*
445 * This mount option is just for testing, and it's not worthwhile to
446 * implement the extra complexity (e.g. RCU protection) that would be
447 * needed to allow it to be set or changed during remount. We do allow
448 * it to be specified during remount, but only if there is no change.
449 */
450 if (is_remount && !F2FS_OPTION(sbi).dummy_enc_policy.policy) {
451 f2fs_warn(sbi, "Can't set test_dummy_encryption on remount");
452 return -EINVAL;
453 }
454 err = fscrypt_set_test_dummy_encryption(
455 sb, arg->from, &F2FS_OPTION(sbi).dummy_enc_policy);
456 if (err) {
457 if (err == -EEXIST)
458 f2fs_warn(sbi,
459 "Can't change test_dummy_encryption on remount");
460 else if (err == -EINVAL)
461 f2fs_warn(sbi, "Value of option \"%s\" is unrecognized",
462 opt);
463 else
464 f2fs_warn(sbi, "Error processing option \"%s\" [%d]",
465 opt, err);
466 return -EINVAL;
467 }
468 f2fs_warn(sbi, "Test dummy encryption mode enabled");
469 #else
470 f2fs_warn(sbi, "Test dummy encryption mount option ignored");
471 #endif
472 return 0;
473 }
474
475 #ifdef CONFIG_F2FS_FS_COMPRESSION
476 #ifdef CONFIG_F2FS_FS_LZ4
f2fs_set_lz4hc_level(struct f2fs_sb_info * sbi,const char * str)477 static int f2fs_set_lz4hc_level(struct f2fs_sb_info *sbi, const char *str)
478 {
479 #ifdef CONFIG_F2FS_FS_LZ4HC
480 unsigned int level;
481 #endif
482
483 if (strlen(str) == 3) {
484 F2FS_OPTION(sbi).compress_level = 0;
485 return 0;
486 }
487
488 #ifdef CONFIG_F2FS_FS_LZ4HC
489 str += 3;
490
491 if (str[0] != ':') {
492 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>");
493 return -EINVAL;
494 }
495 if (kstrtouint(str + 1, 10, &level))
496 return -EINVAL;
497
498 if (level < LZ4HC_MIN_CLEVEL || level > LZ4HC_MAX_CLEVEL) {
499 f2fs_info(sbi, "invalid lz4hc compress level: %d", level);
500 return -EINVAL;
501 }
502
503 F2FS_OPTION(sbi).compress_level = level;
504 return 0;
505 #else
506 f2fs_info(sbi, "kernel doesn't support lz4hc compression");
507 return -EINVAL;
508 #endif
509 }
510 #endif
511
512 #ifdef CONFIG_F2FS_FS_ZSTD
f2fs_set_zstd_level(struct f2fs_sb_info * sbi,const char * str)513 static int f2fs_set_zstd_level(struct f2fs_sb_info *sbi, const char *str)
514 {
515 unsigned int level;
516 int len = 4;
517
518 if (strlen(str) == len) {
519 F2FS_OPTION(sbi).compress_level = 0;
520 return 0;
521 }
522
523 str += len;
524
525 if (str[0] != ':') {
526 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>");
527 return -EINVAL;
528 }
529 if (kstrtouint(str + 1, 10, &level))
530 return -EINVAL;
531
532 if (!level || level > ZSTD_maxCLevel()) {
533 f2fs_info(sbi, "invalid zstd compress level: %d", level);
534 return -EINVAL;
535 }
536
537 F2FS_OPTION(sbi).compress_level = level;
538 return 0;
539 }
540 #endif
541 #endif
542
parse_options(struct super_block * sb,char * options,bool is_remount)543 static int parse_options(struct super_block *sb, char *options, bool is_remount)
544 {
545 struct f2fs_sb_info *sbi = F2FS_SB(sb);
546 substring_t args[MAX_OPT_ARGS];
547 #ifdef CONFIG_F2FS_FS_COMPRESSION
548 unsigned char (*ext)[F2FS_EXTENSION_LEN];
549 int ext_cnt;
550 #endif
551 char *p, *name;
552 int arg = 0;
553 kuid_t uid;
554 kgid_t gid;
555 int ret;
556
557 if (!options)
558 return 0;
559
560 while ((p = strsep(&options, ",")) != NULL) {
561 int token;
562
563 if (!*p)
564 continue;
565 /*
566 * Initialize args struct so we know whether arg was
567 * found; some options take optional arguments.
568 */
569 args[0].to = args[0].from = NULL;
570 token = match_token(p, f2fs_tokens, args);
571
572 switch (token) {
573 case Opt_gc_background:
574 name = match_strdup(&args[0]);
575
576 if (!name)
577 return -ENOMEM;
578 if (!strcmp(name, "on")) {
579 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON;
580 } else if (!strcmp(name, "off")) {
581 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_OFF;
582 } else if (!strcmp(name, "sync")) {
583 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_SYNC;
584 } else {
585 kfree(name);
586 return -EINVAL;
587 }
588 kfree(name);
589 break;
590 case Opt_disable_roll_forward:
591 set_opt(sbi, DISABLE_ROLL_FORWARD);
592 break;
593 case Opt_norecovery:
594 /* this option mounts f2fs with ro */
595 set_opt(sbi, NORECOVERY);
596 if (!f2fs_readonly(sb))
597 return -EINVAL;
598 break;
599 case Opt_discard:
600 set_opt(sbi, DISCARD);
601 break;
602 case Opt_nodiscard:
603 if (f2fs_sb_has_blkzoned(sbi)) {
604 f2fs_warn(sbi, "discard is required for zoned block devices");
605 return -EINVAL;
606 }
607 clear_opt(sbi, DISCARD);
608 break;
609 case Opt_noheap:
610 set_opt(sbi, NOHEAP);
611 break;
612 case Opt_heap:
613 clear_opt(sbi, NOHEAP);
614 break;
615 #ifdef CONFIG_F2FS_FS_XATTR
616 case Opt_user_xattr:
617 set_opt(sbi, XATTR_USER);
618 break;
619 case Opt_nouser_xattr:
620 clear_opt(sbi, XATTR_USER);
621 break;
622 case Opt_inline_xattr:
623 set_opt(sbi, INLINE_XATTR);
624 break;
625 case Opt_noinline_xattr:
626 clear_opt(sbi, INLINE_XATTR);
627 break;
628 case Opt_inline_xattr_size:
629 if (args->from && match_int(args, &arg))
630 return -EINVAL;
631 set_opt(sbi, INLINE_XATTR_SIZE);
632 F2FS_OPTION(sbi).inline_xattr_size = arg;
633 break;
634 #else
635 case Opt_user_xattr:
636 f2fs_info(sbi, "user_xattr options not supported");
637 break;
638 case Opt_nouser_xattr:
639 f2fs_info(sbi, "nouser_xattr options not supported");
640 break;
641 case Opt_inline_xattr:
642 f2fs_info(sbi, "inline_xattr options not supported");
643 break;
644 case Opt_noinline_xattr:
645 f2fs_info(sbi, "noinline_xattr options not supported");
646 break;
647 #endif
648 #ifdef CONFIG_F2FS_FS_POSIX_ACL
649 case Opt_acl:
650 set_opt(sbi, POSIX_ACL);
651 break;
652 case Opt_noacl:
653 clear_opt(sbi, POSIX_ACL);
654 break;
655 #else
656 case Opt_acl:
657 f2fs_info(sbi, "acl options not supported");
658 break;
659 case Opt_noacl:
660 f2fs_info(sbi, "noacl options not supported");
661 break;
662 #endif
663 case Opt_active_logs:
664 if (args->from && match_int(args, &arg))
665 return -EINVAL;
666 if (arg != 2 && arg != 4 &&
667 arg != NR_CURSEG_PERSIST_TYPE)
668 return -EINVAL;
669 F2FS_OPTION(sbi).active_logs = arg;
670 break;
671 case Opt_disable_ext_identify:
672 set_opt(sbi, DISABLE_EXT_IDENTIFY);
673 break;
674 case Opt_inline_data:
675 set_opt(sbi, INLINE_DATA);
676 break;
677 case Opt_inline_dentry:
678 set_opt(sbi, INLINE_DENTRY);
679 break;
680 case Opt_noinline_dentry:
681 clear_opt(sbi, INLINE_DENTRY);
682 break;
683 case Opt_flush_merge:
684 set_opt(sbi, FLUSH_MERGE);
685 break;
686 case Opt_noflush_merge:
687 clear_opt(sbi, FLUSH_MERGE);
688 break;
689 case Opt_nobarrier:
690 set_opt(sbi, NOBARRIER);
691 break;
692 case Opt_fastboot:
693 set_opt(sbi, FASTBOOT);
694 break;
695 case Opt_extent_cache:
696 set_opt(sbi, EXTENT_CACHE);
697 break;
698 case Opt_noextent_cache:
699 clear_opt(sbi, EXTENT_CACHE);
700 break;
701 case Opt_noinline_data:
702 clear_opt(sbi, INLINE_DATA);
703 break;
704 case Opt_data_flush:
705 set_opt(sbi, DATA_FLUSH);
706 break;
707 case Opt_reserve_root:
708 if (args->from && match_int(args, &arg))
709 return -EINVAL;
710 if (test_opt(sbi, RESERVE_ROOT)) {
711 f2fs_info(sbi, "Preserve previous reserve_root=%u",
712 F2FS_OPTION(sbi).root_reserved_blocks);
713 } else {
714 F2FS_OPTION(sbi).root_reserved_blocks = arg;
715 set_opt(sbi, RESERVE_ROOT);
716 }
717 break;
718 case Opt_resuid:
719 if (args->from && match_int(args, &arg))
720 return -EINVAL;
721 uid = make_kuid(current_user_ns(), arg);
722 if (!uid_valid(uid)) {
723 f2fs_err(sbi, "Invalid uid value %d", arg);
724 return -EINVAL;
725 }
726 F2FS_OPTION(sbi).s_resuid = uid;
727 break;
728 case Opt_resgid:
729 if (args->from && match_int(args, &arg))
730 return -EINVAL;
731 gid = make_kgid(current_user_ns(), arg);
732 if (!gid_valid(gid)) {
733 f2fs_err(sbi, "Invalid gid value %d", arg);
734 return -EINVAL;
735 }
736 F2FS_OPTION(sbi).s_resgid = gid;
737 break;
738 case Opt_mode:
739 name = match_strdup(&args[0]);
740
741 if (!name)
742 return -ENOMEM;
743 if (!strcmp(name, "adaptive")) {
744 if (f2fs_sb_has_blkzoned(sbi)) {
745 f2fs_warn(sbi, "adaptive mode is not allowed with zoned block device feature");
746 kfree(name);
747 return -EINVAL;
748 }
749 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE;
750 } else if (!strcmp(name, "lfs")) {
751 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS;
752 } else {
753 kfree(name);
754 return -EINVAL;
755 }
756 kfree(name);
757 break;
758 case Opt_io_size_bits:
759 if (args->from && match_int(args, &arg))
760 return -EINVAL;
761 if (arg <= 0 || arg > __ilog2_u32(BIO_MAX_VECS)) {
762 f2fs_warn(sbi, "Not support %d, larger than %d",
763 1 << arg, BIO_MAX_VECS);
764 return -EINVAL;
765 }
766 F2FS_OPTION(sbi).write_io_size_bits = arg;
767 break;
768 #ifdef CONFIG_F2FS_FAULT_INJECTION
769 case Opt_fault_injection:
770 if (args->from && match_int(args, &arg))
771 return -EINVAL;
772 f2fs_build_fault_attr(sbi, arg, F2FS_ALL_FAULT_TYPE);
773 set_opt(sbi, FAULT_INJECTION);
774 break;
775
776 case Opt_fault_type:
777 if (args->from && match_int(args, &arg))
778 return -EINVAL;
779 f2fs_build_fault_attr(sbi, 0, arg);
780 set_opt(sbi, FAULT_INJECTION);
781 break;
782 #else
783 case Opt_fault_injection:
784 f2fs_info(sbi, "fault_injection options not supported");
785 break;
786
787 case Opt_fault_type:
788 f2fs_info(sbi, "fault_type options not supported");
789 break;
790 #endif
791 case Opt_lazytime:
792 sb->s_flags |= SB_LAZYTIME;
793 break;
794 case Opt_nolazytime:
795 sb->s_flags &= ~SB_LAZYTIME;
796 break;
797 #ifdef CONFIG_QUOTA
798 case Opt_quota:
799 case Opt_usrquota:
800 set_opt(sbi, USRQUOTA);
801 break;
802 case Opt_grpquota:
803 set_opt(sbi, GRPQUOTA);
804 break;
805 case Opt_prjquota:
806 set_opt(sbi, PRJQUOTA);
807 break;
808 case Opt_usrjquota:
809 ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]);
810 if (ret)
811 return ret;
812 break;
813 case Opt_grpjquota:
814 ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]);
815 if (ret)
816 return ret;
817 break;
818 case Opt_prjjquota:
819 ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]);
820 if (ret)
821 return ret;
822 break;
823 case Opt_offusrjquota:
824 ret = f2fs_clear_qf_name(sb, USRQUOTA);
825 if (ret)
826 return ret;
827 break;
828 case Opt_offgrpjquota:
829 ret = f2fs_clear_qf_name(sb, GRPQUOTA);
830 if (ret)
831 return ret;
832 break;
833 case Opt_offprjjquota:
834 ret = f2fs_clear_qf_name(sb, PRJQUOTA);
835 if (ret)
836 return ret;
837 break;
838 case Opt_jqfmt_vfsold:
839 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD;
840 break;
841 case Opt_jqfmt_vfsv0:
842 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0;
843 break;
844 case Opt_jqfmt_vfsv1:
845 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1;
846 break;
847 case Opt_noquota:
848 clear_opt(sbi, QUOTA);
849 clear_opt(sbi, USRQUOTA);
850 clear_opt(sbi, GRPQUOTA);
851 clear_opt(sbi, PRJQUOTA);
852 break;
853 #else
854 case Opt_quota:
855 case Opt_usrquota:
856 case Opt_grpquota:
857 case Opt_prjquota:
858 case Opt_usrjquota:
859 case Opt_grpjquota:
860 case Opt_prjjquota:
861 case Opt_offusrjquota:
862 case Opt_offgrpjquota:
863 case Opt_offprjjquota:
864 case Opt_jqfmt_vfsold:
865 case Opt_jqfmt_vfsv0:
866 case Opt_jqfmt_vfsv1:
867 case Opt_noquota:
868 f2fs_info(sbi, "quota operations not supported");
869 break;
870 #endif
871 case Opt_whint:
872 name = match_strdup(&args[0]);
873 if (!name)
874 return -ENOMEM;
875 if (!strcmp(name, "user-based")) {
876 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_USER;
877 } else if (!strcmp(name, "off")) {
878 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
879 } else if (!strcmp(name, "fs-based")) {
880 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_FS;
881 } else {
882 kfree(name);
883 return -EINVAL;
884 }
885 kfree(name);
886 break;
887 case Opt_alloc:
888 name = match_strdup(&args[0]);
889 if (!name)
890 return -ENOMEM;
891
892 if (!strcmp(name, "default")) {
893 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
894 } else if (!strcmp(name, "reuse")) {
895 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
896 } else {
897 kfree(name);
898 return -EINVAL;
899 }
900 kfree(name);
901 break;
902 case Opt_fsync:
903 name = match_strdup(&args[0]);
904 if (!name)
905 return -ENOMEM;
906 if (!strcmp(name, "posix")) {
907 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
908 } else if (!strcmp(name, "strict")) {
909 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT;
910 } else if (!strcmp(name, "nobarrier")) {
911 F2FS_OPTION(sbi).fsync_mode =
912 FSYNC_MODE_NOBARRIER;
913 } else {
914 kfree(name);
915 return -EINVAL;
916 }
917 kfree(name);
918 break;
919 case Opt_test_dummy_encryption:
920 ret = f2fs_set_test_dummy_encryption(sb, p, &args[0],
921 is_remount);
922 if (ret)
923 return ret;
924 break;
925 case Opt_inlinecrypt:
926 #ifdef CONFIG_FS_ENCRYPTION_INLINE_CRYPT
927 sb->s_flags |= SB_INLINECRYPT;
928 #else
929 f2fs_info(sbi, "inline encryption not supported");
930 #endif
931 break;
932 case Opt_checkpoint_disable_cap_perc:
933 if (args->from && match_int(args, &arg))
934 return -EINVAL;
935 if (arg < 0 || arg > 100)
936 return -EINVAL;
937 F2FS_OPTION(sbi).unusable_cap_perc = arg;
938 set_opt(sbi, DISABLE_CHECKPOINT);
939 break;
940 case Opt_checkpoint_disable_cap:
941 if (args->from && match_int(args, &arg))
942 return -EINVAL;
943 F2FS_OPTION(sbi).unusable_cap = arg;
944 set_opt(sbi, DISABLE_CHECKPOINT);
945 break;
946 case Opt_checkpoint_disable:
947 set_opt(sbi, DISABLE_CHECKPOINT);
948 break;
949 case Opt_checkpoint_enable:
950 clear_opt(sbi, DISABLE_CHECKPOINT);
951 break;
952 case Opt_checkpoint_merge:
953 set_opt(sbi, MERGE_CHECKPOINT);
954 break;
955 case Opt_nocheckpoint_merge:
956 clear_opt(sbi, MERGE_CHECKPOINT);
957 break;
958 #ifdef CONFIG_F2FS_FS_COMPRESSION
959 case Opt_compress_algorithm:
960 if (!f2fs_sb_has_compression(sbi)) {
961 f2fs_info(sbi, "Image doesn't support compression");
962 break;
963 }
964 name = match_strdup(&args[0]);
965 if (!name)
966 return -ENOMEM;
967 if (!strcmp(name, "lzo")) {
968 #ifdef CONFIG_F2FS_FS_LZO
969 F2FS_OPTION(sbi).compress_level = 0;
970 F2FS_OPTION(sbi).compress_algorithm =
971 COMPRESS_LZO;
972 #else
973 f2fs_info(sbi, "kernel doesn't support lzo compression");
974 #endif
975 } else if (!strncmp(name, "lz4", 3)) {
976 #ifdef CONFIG_F2FS_FS_LZ4
977 ret = f2fs_set_lz4hc_level(sbi, name);
978 if (ret) {
979 kfree(name);
980 return -EINVAL;
981 }
982 F2FS_OPTION(sbi).compress_algorithm =
983 COMPRESS_LZ4;
984 #else
985 f2fs_info(sbi, "kernel doesn't support lz4 compression");
986 #endif
987 } else if (!strncmp(name, "zstd", 4)) {
988 #ifdef CONFIG_F2FS_FS_ZSTD
989 ret = f2fs_set_zstd_level(sbi, name);
990 if (ret) {
991 kfree(name);
992 return -EINVAL;
993 }
994 F2FS_OPTION(sbi).compress_algorithm =
995 COMPRESS_ZSTD;
996 #else
997 f2fs_info(sbi, "kernel doesn't support zstd compression");
998 #endif
999 } else if (!strcmp(name, "lzo-rle")) {
1000 #ifdef CONFIG_F2FS_FS_LZORLE
1001 F2FS_OPTION(sbi).compress_level = 0;
1002 F2FS_OPTION(sbi).compress_algorithm =
1003 COMPRESS_LZORLE;
1004 #else
1005 f2fs_info(sbi, "kernel doesn't support lzorle compression");
1006 #endif
1007 } else {
1008 kfree(name);
1009 return -EINVAL;
1010 }
1011 kfree(name);
1012 break;
1013 case Opt_compress_log_size:
1014 if (!f2fs_sb_has_compression(sbi)) {
1015 f2fs_info(sbi, "Image doesn't support compression");
1016 break;
1017 }
1018 if (args->from && match_int(args, &arg))
1019 return -EINVAL;
1020 if (arg < MIN_COMPRESS_LOG_SIZE ||
1021 arg > MAX_COMPRESS_LOG_SIZE) {
1022 f2fs_err(sbi,
1023 "Compress cluster log size is out of range");
1024 return -EINVAL;
1025 }
1026 F2FS_OPTION(sbi).compress_log_size = arg;
1027 break;
1028 case Opt_compress_extension:
1029 if (!f2fs_sb_has_compression(sbi)) {
1030 f2fs_info(sbi, "Image doesn't support compression");
1031 break;
1032 }
1033 name = match_strdup(&args[0]);
1034 if (!name)
1035 return -ENOMEM;
1036
1037 ext = F2FS_OPTION(sbi).extensions;
1038 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
1039
1040 if (strlen(name) >= F2FS_EXTENSION_LEN ||
1041 ext_cnt >= COMPRESS_EXT_NUM) {
1042 f2fs_err(sbi,
1043 "invalid extension length/number");
1044 kfree(name);
1045 return -EINVAL;
1046 }
1047
1048 strcpy(ext[ext_cnt], name);
1049 F2FS_OPTION(sbi).compress_ext_cnt++;
1050 kfree(name);
1051 break;
1052 case Opt_compress_chksum:
1053 F2FS_OPTION(sbi).compress_chksum = true;
1054 break;
1055 case Opt_compress_mode:
1056 name = match_strdup(&args[0]);
1057 if (!name)
1058 return -ENOMEM;
1059 if (!strcmp(name, "fs")) {
1060 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS;
1061 } else if (!strcmp(name, "user")) {
1062 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_USER;
1063 } else {
1064 kfree(name);
1065 return -EINVAL;
1066 }
1067 kfree(name);
1068 break;
1069 #else
1070 case Opt_compress_algorithm:
1071 case Opt_compress_log_size:
1072 case Opt_compress_extension:
1073 case Opt_compress_chksum:
1074 case Opt_compress_mode:
1075 f2fs_info(sbi, "compression options not supported");
1076 break;
1077 #endif
1078 case Opt_atgc:
1079 set_opt(sbi, ATGC);
1080 break;
1081 case Opt_gc_merge:
1082 set_opt(sbi, GC_MERGE);
1083 break;
1084 case Opt_nogc_merge:
1085 clear_opt(sbi, GC_MERGE);
1086 break;
1087 default:
1088 f2fs_err(sbi, "Unrecognized mount option \"%s\" or missing value",
1089 p);
1090 return -EINVAL;
1091 }
1092 }
1093 #ifdef CONFIG_QUOTA
1094 if (f2fs_check_quota_options(sbi))
1095 return -EINVAL;
1096 #else
1097 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sbi->sb)) {
1098 f2fs_info(sbi, "Filesystem with quota feature cannot be mounted RDWR without CONFIG_QUOTA");
1099 return -EINVAL;
1100 }
1101 if (f2fs_sb_has_project_quota(sbi) && !f2fs_readonly(sbi->sb)) {
1102 f2fs_err(sbi, "Filesystem with project quota feature cannot be mounted RDWR without CONFIG_QUOTA");
1103 return -EINVAL;
1104 }
1105 #endif
1106 #ifndef CONFIG_UNICODE
1107 if (f2fs_sb_has_casefold(sbi)) {
1108 f2fs_err(sbi,
1109 "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
1110 return -EINVAL;
1111 }
1112 #endif
1113 /*
1114 * The BLKZONED feature indicates that the drive was formatted with
1115 * zone alignment optimization. This is optional for host-aware
1116 * devices, but mandatory for host-managed zoned block devices.
1117 */
1118 #ifndef CONFIG_BLK_DEV_ZONED
1119 if (f2fs_sb_has_blkzoned(sbi)) {
1120 f2fs_err(sbi, "Zoned block device support is not enabled");
1121 return -EINVAL;
1122 }
1123 #endif
1124
1125 if (F2FS_IO_SIZE_BITS(sbi) && !f2fs_lfs_mode(sbi)) {
1126 f2fs_err(sbi, "Should set mode=lfs with %uKB-sized IO",
1127 F2FS_IO_SIZE_KB(sbi));
1128 return -EINVAL;
1129 }
1130
1131 if (test_opt(sbi, INLINE_XATTR_SIZE)) {
1132 int min_size, max_size;
1133
1134 if (!f2fs_sb_has_extra_attr(sbi) ||
1135 !f2fs_sb_has_flexible_inline_xattr(sbi)) {
1136 f2fs_err(sbi, "extra_attr or flexible_inline_xattr feature is off");
1137 return -EINVAL;
1138 }
1139 if (!test_opt(sbi, INLINE_XATTR)) {
1140 f2fs_err(sbi, "inline_xattr_size option should be set with inline_xattr option");
1141 return -EINVAL;
1142 }
1143
1144 min_size = sizeof(struct f2fs_xattr_header) / sizeof(__le32);
1145 max_size = MAX_INLINE_XATTR_SIZE;
1146
1147 if (F2FS_OPTION(sbi).inline_xattr_size < min_size ||
1148 F2FS_OPTION(sbi).inline_xattr_size > max_size) {
1149 f2fs_err(sbi, "inline xattr size is out of range: %d ~ %d",
1150 min_size, max_size);
1151 return -EINVAL;
1152 }
1153 }
1154
1155 if (test_opt(sbi, DISABLE_CHECKPOINT) && f2fs_lfs_mode(sbi)) {
1156 f2fs_err(sbi, "LFS not compatible with checkpoint=disable\n");
1157 return -EINVAL;
1158 }
1159
1160 /* Not pass down write hints if the number of active logs is lesser
1161 * than NR_CURSEG_PERSIST_TYPE.
1162 */
1163 if (F2FS_OPTION(sbi).active_logs != NR_CURSEG_TYPE)
1164 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
1165 return 0;
1166 }
1167
f2fs_alloc_inode(struct super_block * sb)1168 static struct inode *f2fs_alloc_inode(struct super_block *sb)
1169 {
1170 struct f2fs_inode_info *fi;
1171
1172 fi = kmem_cache_alloc(f2fs_inode_cachep, GFP_F2FS_ZERO);
1173 if (!fi)
1174 return NULL;
1175
1176 init_once((void *) fi);
1177
1178 /* Initialize f2fs-specific inode info */
1179 atomic_set(&fi->dirty_pages, 0);
1180 atomic_set(&fi->i_compr_blocks, 0);
1181 init_rwsem(&fi->i_sem);
1182 spin_lock_init(&fi->i_size_lock);
1183 INIT_LIST_HEAD(&fi->dirty_list);
1184 INIT_LIST_HEAD(&fi->gdirty_list);
1185 INIT_LIST_HEAD(&fi->inmem_ilist);
1186 INIT_LIST_HEAD(&fi->inmem_pages);
1187 mutex_init(&fi->inmem_lock);
1188 init_rwsem(&fi->i_gc_rwsem[READ]);
1189 init_rwsem(&fi->i_gc_rwsem[WRITE]);
1190 init_rwsem(&fi->i_mmap_sem);
1191 init_rwsem(&fi->i_xattr_sem);
1192
1193 /* Will be used by directory only */
1194 fi->i_dir_level = F2FS_SB(sb)->dir_level;
1195
1196 return &fi->vfs_inode;
1197 }
1198
f2fs_drop_inode(struct inode * inode)1199 static int f2fs_drop_inode(struct inode *inode)
1200 {
1201 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1202 int ret;
1203
1204 /*
1205 * during filesystem shutdown, if checkpoint is disabled,
1206 * drop useless meta/node dirty pages.
1207 */
1208 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
1209 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
1210 inode->i_ino == F2FS_META_INO(sbi)) {
1211 trace_f2fs_drop_inode(inode, 1);
1212 return 1;
1213 }
1214 }
1215
1216 /*
1217 * This is to avoid a deadlock condition like below.
1218 * writeback_single_inode(inode)
1219 * - f2fs_write_data_page
1220 * - f2fs_gc -> iput -> evict
1221 * - inode_wait_for_writeback(inode)
1222 */
1223 if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) {
1224 if (!inode->i_nlink && !is_bad_inode(inode)) {
1225 /* to avoid evict_inode call simultaneously */
1226 atomic_inc(&inode->i_count);
1227 spin_unlock(&inode->i_lock);
1228
1229 /* some remained atomic pages should discarded */
1230 if (f2fs_is_atomic_file(inode))
1231 f2fs_drop_inmem_pages(inode);
1232
1233 /* should remain fi->extent_tree for writepage */
1234 f2fs_destroy_extent_node(inode);
1235
1236 sb_start_intwrite(inode->i_sb);
1237 f2fs_i_size_write(inode, 0);
1238
1239 f2fs_submit_merged_write_cond(F2FS_I_SB(inode),
1240 inode, NULL, 0, DATA);
1241 truncate_inode_pages_final(inode->i_mapping);
1242
1243 if (F2FS_HAS_BLOCKS(inode))
1244 f2fs_truncate(inode);
1245
1246 sb_end_intwrite(inode->i_sb);
1247
1248 spin_lock(&inode->i_lock);
1249 atomic_dec(&inode->i_count);
1250 }
1251 trace_f2fs_drop_inode(inode, 0);
1252 return 0;
1253 }
1254 ret = generic_drop_inode(inode);
1255 if (!ret)
1256 ret = fscrypt_drop_inode(inode);
1257 trace_f2fs_drop_inode(inode, ret);
1258 return ret;
1259 }
1260
f2fs_inode_dirtied(struct inode * inode,bool sync)1261 int f2fs_inode_dirtied(struct inode *inode, bool sync)
1262 {
1263 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1264 int ret = 0;
1265
1266 spin_lock(&sbi->inode_lock[DIRTY_META]);
1267 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
1268 ret = 1;
1269 } else {
1270 set_inode_flag(inode, FI_DIRTY_INODE);
1271 stat_inc_dirty_inode(sbi, DIRTY_META);
1272 }
1273 if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) {
1274 list_add_tail(&F2FS_I(inode)->gdirty_list,
1275 &sbi->inode_list[DIRTY_META]);
1276 inc_page_count(sbi, F2FS_DIRTY_IMETA);
1277 }
1278 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1279 return ret;
1280 }
1281
f2fs_inode_synced(struct inode * inode)1282 void f2fs_inode_synced(struct inode *inode)
1283 {
1284 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1285
1286 spin_lock(&sbi->inode_lock[DIRTY_META]);
1287 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) {
1288 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1289 return;
1290 }
1291 if (!list_empty(&F2FS_I(inode)->gdirty_list)) {
1292 list_del_init(&F2FS_I(inode)->gdirty_list);
1293 dec_page_count(sbi, F2FS_DIRTY_IMETA);
1294 }
1295 clear_inode_flag(inode, FI_DIRTY_INODE);
1296 clear_inode_flag(inode, FI_AUTO_RECOVER);
1297 stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META);
1298 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1299 }
1300
1301 /*
1302 * f2fs_dirty_inode() is called from __mark_inode_dirty()
1303 *
1304 * We should call set_dirty_inode to write the dirty inode through write_inode.
1305 */
f2fs_dirty_inode(struct inode * inode,int flags)1306 static void f2fs_dirty_inode(struct inode *inode, int flags)
1307 {
1308 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1309
1310 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
1311 inode->i_ino == F2FS_META_INO(sbi))
1312 return;
1313
1314 if (is_inode_flag_set(inode, FI_AUTO_RECOVER))
1315 clear_inode_flag(inode, FI_AUTO_RECOVER);
1316
1317 f2fs_inode_dirtied(inode, false);
1318 }
1319
f2fs_free_inode(struct inode * inode)1320 static void f2fs_free_inode(struct inode *inode)
1321 {
1322 fscrypt_free_inode(inode);
1323 kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode));
1324 }
1325
destroy_percpu_info(struct f2fs_sb_info * sbi)1326 static void destroy_percpu_info(struct f2fs_sb_info *sbi)
1327 {
1328 percpu_counter_destroy(&sbi->alloc_valid_block_count);
1329 percpu_counter_destroy(&sbi->total_valid_inode_count);
1330 }
1331
destroy_device_list(struct f2fs_sb_info * sbi)1332 static void destroy_device_list(struct f2fs_sb_info *sbi)
1333 {
1334 int i;
1335
1336 for (i = 0; i < sbi->s_ndevs; i++) {
1337 blkdev_put(FDEV(i).bdev, FMODE_EXCL);
1338 #ifdef CONFIG_BLK_DEV_ZONED
1339 kvfree(FDEV(i).blkz_seq);
1340 kfree(FDEV(i).zone_capacity_blocks);
1341 #endif
1342 }
1343 kvfree(sbi->devs);
1344 }
1345
f2fs_put_super(struct super_block * sb)1346 static void f2fs_put_super(struct super_block *sb)
1347 {
1348 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1349 int i;
1350 bool dropped;
1351
1352 /* unregister procfs/sysfs entries in advance to avoid race case */
1353 f2fs_unregister_sysfs(sbi);
1354
1355 f2fs_quota_off_umount(sb);
1356
1357 /* prevent remaining shrinker jobs */
1358 mutex_lock(&sbi->umount_mutex);
1359
1360 /*
1361 * flush all issued checkpoints and stop checkpoint issue thread.
1362 * after then, all checkpoints should be done by each process context.
1363 */
1364 f2fs_stop_ckpt_thread(sbi);
1365
1366 /*
1367 * We don't need to do checkpoint when superblock is clean.
1368 * But, the previous checkpoint was not done by umount, it needs to do
1369 * clean checkpoint again.
1370 */
1371 if ((is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
1372 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))) {
1373 struct cp_control cpc = {
1374 .reason = CP_UMOUNT,
1375 };
1376 f2fs_write_checkpoint(sbi, &cpc);
1377 }
1378
1379 /* be sure to wait for any on-going discard commands */
1380 dropped = f2fs_issue_discard_timeout(sbi);
1381
1382 if ((f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) &&
1383 !sbi->discard_blks && !dropped) {
1384 struct cp_control cpc = {
1385 .reason = CP_UMOUNT | CP_TRIMMED,
1386 };
1387 f2fs_write_checkpoint(sbi, &cpc);
1388 }
1389
1390 /*
1391 * normally superblock is clean, so we need to release this.
1392 * In addition, EIO will skip do checkpoint, we need this as well.
1393 */
1394 f2fs_release_ino_entry(sbi, true);
1395
1396 f2fs_leave_shrinker(sbi);
1397 mutex_unlock(&sbi->umount_mutex);
1398
1399 /* our cp_error case, we can wait for any writeback page */
1400 f2fs_flush_merged_writes(sbi);
1401
1402 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA);
1403
1404 f2fs_bug_on(sbi, sbi->fsync_node_num);
1405
1406 iput(sbi->node_inode);
1407 sbi->node_inode = NULL;
1408
1409 iput(sbi->meta_inode);
1410 sbi->meta_inode = NULL;
1411
1412 /*
1413 * iput() can update stat information, if f2fs_write_checkpoint()
1414 * above failed with error.
1415 */
1416 f2fs_destroy_stats(sbi);
1417
1418 /* destroy f2fs internal modules */
1419 f2fs_destroy_node_manager(sbi);
1420 f2fs_destroy_segment_manager(sbi);
1421
1422 f2fs_destroy_post_read_wq(sbi);
1423
1424 kvfree(sbi->ckpt);
1425
1426 sb->s_fs_info = NULL;
1427 if (sbi->s_chksum_driver)
1428 crypto_free_shash(sbi->s_chksum_driver);
1429 kfree(sbi->raw_super);
1430
1431 destroy_device_list(sbi);
1432 f2fs_destroy_page_array_cache(sbi);
1433 f2fs_destroy_xattr_caches(sbi);
1434 mempool_destroy(sbi->write_io_dummy);
1435 #ifdef CONFIG_QUOTA
1436 for (i = 0; i < MAXQUOTAS; i++)
1437 kfree(F2FS_OPTION(sbi).s_qf_names[i]);
1438 #endif
1439 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy);
1440 destroy_percpu_info(sbi);
1441 for (i = 0; i < NR_PAGE_TYPE; i++)
1442 kvfree(sbi->write_io[i]);
1443 #ifdef CONFIG_UNICODE
1444 utf8_unload(sb->s_encoding);
1445 #endif
1446 kfree(sbi);
1447 }
1448
f2fs_sync_fs(struct super_block * sb,int sync)1449 int f2fs_sync_fs(struct super_block *sb, int sync)
1450 {
1451 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1452 int err = 0;
1453
1454 if (unlikely(f2fs_cp_error(sbi)))
1455 return 0;
1456 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
1457 return 0;
1458
1459 trace_f2fs_sync_fs(sb, sync);
1460
1461 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
1462 return -EAGAIN;
1463
1464 if (sync)
1465 err = f2fs_issue_checkpoint(sbi);
1466
1467 return err;
1468 }
1469
f2fs_freeze(struct super_block * sb)1470 static int f2fs_freeze(struct super_block *sb)
1471 {
1472 if (f2fs_readonly(sb))
1473 return 0;
1474
1475 /* IO error happened before */
1476 if (unlikely(f2fs_cp_error(F2FS_SB(sb))))
1477 return -EIO;
1478
1479 /* must be clean, since sync_filesystem() was already called */
1480 if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY))
1481 return -EINVAL;
1482
1483 /* ensure no checkpoint required */
1484 if (!llist_empty(&F2FS_SB(sb)->cprc_info.issue_list))
1485 return -EINVAL;
1486 return 0;
1487 }
1488
f2fs_unfreeze(struct super_block * sb)1489 static int f2fs_unfreeze(struct super_block *sb)
1490 {
1491 return 0;
1492 }
1493
1494 #ifdef CONFIG_QUOTA
f2fs_statfs_project(struct super_block * sb,kprojid_t projid,struct kstatfs * buf)1495 static int f2fs_statfs_project(struct super_block *sb,
1496 kprojid_t projid, struct kstatfs *buf)
1497 {
1498 struct kqid qid;
1499 struct dquot *dquot;
1500 u64 limit;
1501 u64 curblock;
1502
1503 qid = make_kqid_projid(projid);
1504 dquot = dqget(sb, qid);
1505 if (IS_ERR(dquot))
1506 return PTR_ERR(dquot);
1507 spin_lock(&dquot->dq_dqb_lock);
1508
1509 limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit,
1510 dquot->dq_dqb.dqb_bhardlimit);
1511 if (limit)
1512 limit >>= sb->s_blocksize_bits;
1513
1514 if (limit && buf->f_blocks > limit) {
1515 curblock = (dquot->dq_dqb.dqb_curspace +
1516 dquot->dq_dqb.dqb_rsvspace) >> sb->s_blocksize_bits;
1517 buf->f_blocks = limit;
1518 buf->f_bfree = buf->f_bavail =
1519 (buf->f_blocks > curblock) ?
1520 (buf->f_blocks - curblock) : 0;
1521 }
1522
1523 limit = min_not_zero(dquot->dq_dqb.dqb_isoftlimit,
1524 dquot->dq_dqb.dqb_ihardlimit);
1525
1526 if (limit && buf->f_files > limit) {
1527 buf->f_files = limit;
1528 buf->f_ffree =
1529 (buf->f_files > dquot->dq_dqb.dqb_curinodes) ?
1530 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0;
1531 }
1532
1533 spin_unlock(&dquot->dq_dqb_lock);
1534 dqput(dquot);
1535 return 0;
1536 }
1537 #endif
1538
f2fs_statfs(struct dentry * dentry,struct kstatfs * buf)1539 static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf)
1540 {
1541 struct super_block *sb = dentry->d_sb;
1542 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1543 u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
1544 block_t total_count, user_block_count, start_count;
1545 u64 avail_node_count;
1546
1547 total_count = le64_to_cpu(sbi->raw_super->block_count);
1548 user_block_count = sbi->user_block_count;
1549 start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr);
1550 buf->f_type = F2FS_SUPER_MAGIC;
1551 buf->f_bsize = sbi->blocksize;
1552
1553 buf->f_blocks = total_count - start_count;
1554 buf->f_bfree = user_block_count - valid_user_blocks(sbi) -
1555 sbi->current_reserved_blocks;
1556
1557 spin_lock(&sbi->stat_lock);
1558 if (unlikely(buf->f_bfree <= sbi->unusable_block_count))
1559 buf->f_bfree = 0;
1560 else
1561 buf->f_bfree -= sbi->unusable_block_count;
1562 spin_unlock(&sbi->stat_lock);
1563
1564 if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks)
1565 buf->f_bavail = buf->f_bfree -
1566 F2FS_OPTION(sbi).root_reserved_blocks;
1567 else
1568 buf->f_bavail = 0;
1569
1570 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
1571
1572 if (avail_node_count > user_block_count) {
1573 buf->f_files = user_block_count;
1574 buf->f_ffree = buf->f_bavail;
1575 } else {
1576 buf->f_files = avail_node_count;
1577 buf->f_ffree = min(avail_node_count - valid_node_count(sbi),
1578 buf->f_bavail);
1579 }
1580
1581 buf->f_namelen = F2FS_NAME_LEN;
1582 buf->f_fsid = u64_to_fsid(id);
1583
1584 #ifdef CONFIG_QUOTA
1585 if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) &&
1586 sb_has_quota_limits_enabled(sb, PRJQUOTA)) {
1587 f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf);
1588 }
1589 #endif
1590 return 0;
1591 }
1592
f2fs_show_quota_options(struct seq_file * seq,struct super_block * sb)1593 static inline void f2fs_show_quota_options(struct seq_file *seq,
1594 struct super_block *sb)
1595 {
1596 #ifdef CONFIG_QUOTA
1597 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1598
1599 if (F2FS_OPTION(sbi).s_jquota_fmt) {
1600 char *fmtname = "";
1601
1602 switch (F2FS_OPTION(sbi).s_jquota_fmt) {
1603 case QFMT_VFS_OLD:
1604 fmtname = "vfsold";
1605 break;
1606 case QFMT_VFS_V0:
1607 fmtname = "vfsv0";
1608 break;
1609 case QFMT_VFS_V1:
1610 fmtname = "vfsv1";
1611 break;
1612 }
1613 seq_printf(seq, ",jqfmt=%s", fmtname);
1614 }
1615
1616 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
1617 seq_show_option(seq, "usrjquota",
1618 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]);
1619
1620 if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
1621 seq_show_option(seq, "grpjquota",
1622 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]);
1623
1624 if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
1625 seq_show_option(seq, "prjjquota",
1626 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]);
1627 #endif
1628 }
1629
1630 #ifdef CONFIG_F2FS_FS_COMPRESSION
f2fs_show_compress_options(struct seq_file * seq,struct super_block * sb)1631 static inline void f2fs_show_compress_options(struct seq_file *seq,
1632 struct super_block *sb)
1633 {
1634 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1635 char *algtype = "";
1636 int i;
1637
1638 if (!f2fs_sb_has_compression(sbi))
1639 return;
1640
1641 switch (F2FS_OPTION(sbi).compress_algorithm) {
1642 case COMPRESS_LZO:
1643 algtype = "lzo";
1644 break;
1645 case COMPRESS_LZ4:
1646 algtype = "lz4";
1647 break;
1648 case COMPRESS_ZSTD:
1649 algtype = "zstd";
1650 break;
1651 case COMPRESS_LZORLE:
1652 algtype = "lzo-rle";
1653 break;
1654 }
1655 seq_printf(seq, ",compress_algorithm=%s", algtype);
1656
1657 if (F2FS_OPTION(sbi).compress_level)
1658 seq_printf(seq, ":%d", F2FS_OPTION(sbi).compress_level);
1659
1660 seq_printf(seq, ",compress_log_size=%u",
1661 F2FS_OPTION(sbi).compress_log_size);
1662
1663 for (i = 0; i < F2FS_OPTION(sbi).compress_ext_cnt; i++) {
1664 seq_printf(seq, ",compress_extension=%s",
1665 F2FS_OPTION(sbi).extensions[i]);
1666 }
1667
1668 if (F2FS_OPTION(sbi).compress_chksum)
1669 seq_puts(seq, ",compress_chksum");
1670
1671 if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_FS)
1672 seq_printf(seq, ",compress_mode=%s", "fs");
1673 else if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_USER)
1674 seq_printf(seq, ",compress_mode=%s", "user");
1675 }
1676 #endif
1677
f2fs_show_options(struct seq_file * seq,struct dentry * root)1678 static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
1679 {
1680 struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb);
1681
1682 if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_SYNC)
1683 seq_printf(seq, ",background_gc=%s", "sync");
1684 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_ON)
1685 seq_printf(seq, ",background_gc=%s", "on");
1686 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF)
1687 seq_printf(seq, ",background_gc=%s", "off");
1688
1689 if (test_opt(sbi, GC_MERGE))
1690 seq_puts(seq, ",gc_merge");
1691
1692 if (test_opt(sbi, DISABLE_ROLL_FORWARD))
1693 seq_puts(seq, ",disable_roll_forward");
1694 if (test_opt(sbi, NORECOVERY))
1695 seq_puts(seq, ",norecovery");
1696 if (test_opt(sbi, DISCARD))
1697 seq_puts(seq, ",discard");
1698 else
1699 seq_puts(seq, ",nodiscard");
1700 if (test_opt(sbi, NOHEAP))
1701 seq_puts(seq, ",no_heap");
1702 else
1703 seq_puts(seq, ",heap");
1704 #ifdef CONFIG_F2FS_FS_XATTR
1705 if (test_opt(sbi, XATTR_USER))
1706 seq_puts(seq, ",user_xattr");
1707 else
1708 seq_puts(seq, ",nouser_xattr");
1709 if (test_opt(sbi, INLINE_XATTR))
1710 seq_puts(seq, ",inline_xattr");
1711 else
1712 seq_puts(seq, ",noinline_xattr");
1713 if (test_opt(sbi, INLINE_XATTR_SIZE))
1714 seq_printf(seq, ",inline_xattr_size=%u",
1715 F2FS_OPTION(sbi).inline_xattr_size);
1716 #endif
1717 #ifdef CONFIG_F2FS_FS_POSIX_ACL
1718 if (test_opt(sbi, POSIX_ACL))
1719 seq_puts(seq, ",acl");
1720 else
1721 seq_puts(seq, ",noacl");
1722 #endif
1723 if (test_opt(sbi, DISABLE_EXT_IDENTIFY))
1724 seq_puts(seq, ",disable_ext_identify");
1725 if (test_opt(sbi, INLINE_DATA))
1726 seq_puts(seq, ",inline_data");
1727 else
1728 seq_puts(seq, ",noinline_data");
1729 if (test_opt(sbi, INLINE_DENTRY))
1730 seq_puts(seq, ",inline_dentry");
1731 else
1732 seq_puts(seq, ",noinline_dentry");
1733 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE))
1734 seq_puts(seq, ",flush_merge");
1735 if (test_opt(sbi, NOBARRIER))
1736 seq_puts(seq, ",nobarrier");
1737 if (test_opt(sbi, FASTBOOT))
1738 seq_puts(seq, ",fastboot");
1739 if (test_opt(sbi, EXTENT_CACHE))
1740 seq_puts(seq, ",extent_cache");
1741 else
1742 seq_puts(seq, ",noextent_cache");
1743 if (test_opt(sbi, DATA_FLUSH))
1744 seq_puts(seq, ",data_flush");
1745
1746 seq_puts(seq, ",mode=");
1747 if (F2FS_OPTION(sbi).fs_mode == FS_MODE_ADAPTIVE)
1748 seq_puts(seq, "adaptive");
1749 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_LFS)
1750 seq_puts(seq, "lfs");
1751 seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs);
1752 if (test_opt(sbi, RESERVE_ROOT))
1753 seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u",
1754 F2FS_OPTION(sbi).root_reserved_blocks,
1755 from_kuid_munged(&init_user_ns,
1756 F2FS_OPTION(sbi).s_resuid),
1757 from_kgid_munged(&init_user_ns,
1758 F2FS_OPTION(sbi).s_resgid));
1759 if (F2FS_IO_SIZE_BITS(sbi))
1760 seq_printf(seq, ",io_bits=%u",
1761 F2FS_OPTION(sbi).write_io_size_bits);
1762 #ifdef CONFIG_F2FS_FAULT_INJECTION
1763 if (test_opt(sbi, FAULT_INJECTION)) {
1764 seq_printf(seq, ",fault_injection=%u",
1765 F2FS_OPTION(sbi).fault_info.inject_rate);
1766 seq_printf(seq, ",fault_type=%u",
1767 F2FS_OPTION(sbi).fault_info.inject_type);
1768 }
1769 #endif
1770 #ifdef CONFIG_QUOTA
1771 if (test_opt(sbi, QUOTA))
1772 seq_puts(seq, ",quota");
1773 if (test_opt(sbi, USRQUOTA))
1774 seq_puts(seq, ",usrquota");
1775 if (test_opt(sbi, GRPQUOTA))
1776 seq_puts(seq, ",grpquota");
1777 if (test_opt(sbi, PRJQUOTA))
1778 seq_puts(seq, ",prjquota");
1779 #endif
1780 f2fs_show_quota_options(seq, sbi->sb);
1781 if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER)
1782 seq_printf(seq, ",whint_mode=%s", "user-based");
1783 else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS)
1784 seq_printf(seq, ",whint_mode=%s", "fs-based");
1785
1786 fscrypt_show_test_dummy_encryption(seq, ',', sbi->sb);
1787
1788 if (sbi->sb->s_flags & SB_INLINECRYPT)
1789 seq_puts(seq, ",inlinecrypt");
1790
1791 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT)
1792 seq_printf(seq, ",alloc_mode=%s", "default");
1793 else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE)
1794 seq_printf(seq, ",alloc_mode=%s", "reuse");
1795
1796 if (test_opt(sbi, DISABLE_CHECKPOINT))
1797 seq_printf(seq, ",checkpoint=disable:%u",
1798 F2FS_OPTION(sbi).unusable_cap);
1799 if (test_opt(sbi, MERGE_CHECKPOINT))
1800 seq_puts(seq, ",checkpoint_merge");
1801 else
1802 seq_puts(seq, ",nocheckpoint_merge");
1803 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX)
1804 seq_printf(seq, ",fsync_mode=%s", "posix");
1805 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT)
1806 seq_printf(seq, ",fsync_mode=%s", "strict");
1807 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER)
1808 seq_printf(seq, ",fsync_mode=%s", "nobarrier");
1809
1810 #ifdef CONFIG_F2FS_FS_COMPRESSION
1811 f2fs_show_compress_options(seq, sbi->sb);
1812 #endif
1813
1814 if (test_opt(sbi, ATGC))
1815 seq_puts(seq, ",atgc");
1816 return 0;
1817 }
1818
default_options(struct f2fs_sb_info * sbi)1819 static void default_options(struct f2fs_sb_info *sbi)
1820 {
1821 /* init some FS parameters */
1822 F2FS_OPTION(sbi).active_logs = NR_CURSEG_PERSIST_TYPE;
1823 F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
1824 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
1825 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
1826 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
1827 F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID);
1828 F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID);
1829 F2FS_OPTION(sbi).compress_algorithm = COMPRESS_LZ4;
1830 F2FS_OPTION(sbi).compress_log_size = MIN_COMPRESS_LOG_SIZE;
1831 F2FS_OPTION(sbi).compress_ext_cnt = 0;
1832 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS;
1833 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON;
1834
1835 sbi->sb->s_flags &= ~SB_INLINECRYPT;
1836
1837 set_opt(sbi, INLINE_XATTR);
1838 set_opt(sbi, INLINE_DATA);
1839 set_opt(sbi, INLINE_DENTRY);
1840 set_opt(sbi, EXTENT_CACHE);
1841 set_opt(sbi, NOHEAP);
1842 clear_opt(sbi, DISABLE_CHECKPOINT);
1843 set_opt(sbi, MERGE_CHECKPOINT);
1844 F2FS_OPTION(sbi).unusable_cap = 0;
1845 sbi->sb->s_flags |= SB_LAZYTIME;
1846 set_opt(sbi, FLUSH_MERGE);
1847 set_opt(sbi, DISCARD);
1848 if (f2fs_sb_has_blkzoned(sbi))
1849 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS;
1850 else
1851 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE;
1852
1853 #ifdef CONFIG_F2FS_FS_XATTR
1854 set_opt(sbi, XATTR_USER);
1855 #endif
1856 #ifdef CONFIG_F2FS_FS_POSIX_ACL
1857 set_opt(sbi, POSIX_ACL);
1858 #endif
1859
1860 f2fs_build_fault_attr(sbi, 0, 0);
1861 }
1862
1863 #ifdef CONFIG_QUOTA
1864 static int f2fs_enable_quotas(struct super_block *sb);
1865 #endif
1866
f2fs_disable_checkpoint(struct f2fs_sb_info * sbi)1867 static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi)
1868 {
1869 unsigned int s_flags = sbi->sb->s_flags;
1870 struct cp_control cpc;
1871 int err = 0;
1872 int ret;
1873 block_t unusable;
1874
1875 if (s_flags & SB_RDONLY) {
1876 f2fs_err(sbi, "checkpoint=disable on readonly fs");
1877 return -EINVAL;
1878 }
1879 sbi->sb->s_flags |= SB_ACTIVE;
1880
1881 f2fs_update_time(sbi, DISABLE_TIME);
1882
1883 while (!f2fs_time_over(sbi, DISABLE_TIME)) {
1884 down_write(&sbi->gc_lock);
1885 err = f2fs_gc(sbi, true, false, false, NULL_SEGNO);
1886 if (err == -ENODATA) {
1887 err = 0;
1888 break;
1889 }
1890 if (err && err != -EAGAIN)
1891 break;
1892 }
1893
1894 ret = sync_filesystem(sbi->sb);
1895 if (ret || err) {
1896 err = ret ? ret : err;
1897 goto restore_flag;
1898 }
1899
1900 unusable = f2fs_get_unusable_blocks(sbi);
1901 if (f2fs_disable_cp_again(sbi, unusable)) {
1902 err = -EAGAIN;
1903 goto restore_flag;
1904 }
1905
1906 down_write(&sbi->gc_lock);
1907 cpc.reason = CP_PAUSE;
1908 set_sbi_flag(sbi, SBI_CP_DISABLED);
1909 err = f2fs_write_checkpoint(sbi, &cpc);
1910 if (err)
1911 goto out_unlock;
1912
1913 spin_lock(&sbi->stat_lock);
1914 sbi->unusable_block_count = unusable;
1915 spin_unlock(&sbi->stat_lock);
1916
1917 out_unlock:
1918 up_write(&sbi->gc_lock);
1919 restore_flag:
1920 sbi->sb->s_flags = s_flags; /* Restore SB_RDONLY status */
1921 return err;
1922 }
1923
f2fs_enable_checkpoint(struct f2fs_sb_info * sbi)1924 static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi)
1925 {
1926 /* we should flush all the data to keep data consistency */
1927 sync_inodes_sb(sbi->sb);
1928
1929 down_write(&sbi->gc_lock);
1930 f2fs_dirty_to_prefree(sbi);
1931
1932 clear_sbi_flag(sbi, SBI_CP_DISABLED);
1933 set_sbi_flag(sbi, SBI_IS_DIRTY);
1934 up_write(&sbi->gc_lock);
1935
1936 f2fs_sync_fs(sbi->sb, 1);
1937 }
1938
f2fs_remount(struct super_block * sb,int * flags,char * data)1939 static int f2fs_remount(struct super_block *sb, int *flags, char *data)
1940 {
1941 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1942 struct f2fs_mount_info org_mount_opt;
1943 unsigned long old_sb_flags;
1944 int err;
1945 bool need_restart_gc = false, need_stop_gc = false;
1946 bool need_restart_ckpt = false, need_stop_ckpt = false;
1947 bool need_restart_flush = false, need_stop_flush = false;
1948 bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE);
1949 bool disable_checkpoint = test_opt(sbi, DISABLE_CHECKPOINT);
1950 bool no_io_align = !F2FS_IO_ALIGNED(sbi);
1951 bool no_atgc = !test_opt(sbi, ATGC);
1952 bool checkpoint_changed;
1953 #ifdef CONFIG_QUOTA
1954 int i, j;
1955 #endif
1956
1957 /*
1958 * Save the old mount options in case we
1959 * need to restore them.
1960 */
1961 org_mount_opt = sbi->mount_opt;
1962 old_sb_flags = sb->s_flags;
1963
1964 #ifdef CONFIG_QUOTA
1965 org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt;
1966 for (i = 0; i < MAXQUOTAS; i++) {
1967 if (F2FS_OPTION(sbi).s_qf_names[i]) {
1968 org_mount_opt.s_qf_names[i] =
1969 kstrdup(F2FS_OPTION(sbi).s_qf_names[i],
1970 GFP_KERNEL);
1971 if (!org_mount_opt.s_qf_names[i]) {
1972 for (j = 0; j < i; j++)
1973 kfree(org_mount_opt.s_qf_names[j]);
1974 return -ENOMEM;
1975 }
1976 } else {
1977 org_mount_opt.s_qf_names[i] = NULL;
1978 }
1979 }
1980 #endif
1981
1982 /* recover superblocks we couldn't write due to previous RO mount */
1983 if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) {
1984 err = f2fs_commit_super(sbi, false);
1985 f2fs_info(sbi, "Try to recover all the superblocks, ret: %d",
1986 err);
1987 if (!err)
1988 clear_sbi_flag(sbi, SBI_NEED_SB_WRITE);
1989 }
1990
1991 default_options(sbi);
1992
1993 /* parse mount options */
1994 err = parse_options(sb, data, true);
1995 if (err)
1996 goto restore_opts;
1997 checkpoint_changed =
1998 disable_checkpoint != test_opt(sbi, DISABLE_CHECKPOINT);
1999
2000 /*
2001 * Previous and new state of filesystem is RO,
2002 * so skip checking GC and FLUSH_MERGE conditions.
2003 */
2004 if (f2fs_readonly(sb) && (*flags & SB_RDONLY))
2005 goto skip;
2006
2007 #ifdef CONFIG_QUOTA
2008 if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) {
2009 err = dquot_suspend(sb, -1);
2010 if (err < 0)
2011 goto restore_opts;
2012 } else if (f2fs_readonly(sb) && !(*flags & SB_RDONLY)) {
2013 /* dquot_resume needs RW */
2014 sb->s_flags &= ~SB_RDONLY;
2015 if (sb_any_quota_suspended(sb)) {
2016 dquot_resume(sb, -1);
2017 } else if (f2fs_sb_has_quota_ino(sbi)) {
2018 err = f2fs_enable_quotas(sb);
2019 if (err)
2020 goto restore_opts;
2021 }
2022 }
2023 #endif
2024 /* disallow enable atgc dynamically */
2025 if (no_atgc == !!test_opt(sbi, ATGC)) {
2026 err = -EINVAL;
2027 f2fs_warn(sbi, "switch atgc option is not allowed");
2028 goto restore_opts;
2029 }
2030
2031 /* disallow enable/disable extent_cache dynamically */
2032 if (no_extent_cache == !!test_opt(sbi, EXTENT_CACHE)) {
2033 err = -EINVAL;
2034 f2fs_warn(sbi, "switch extent_cache option is not allowed");
2035 goto restore_opts;
2036 }
2037
2038 if (no_io_align == !!F2FS_IO_ALIGNED(sbi)) {
2039 err = -EINVAL;
2040 f2fs_warn(sbi, "switch io_bits option is not allowed");
2041 goto restore_opts;
2042 }
2043
2044 if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) {
2045 err = -EINVAL;
2046 f2fs_warn(sbi, "disabling checkpoint not compatible with read-only");
2047 goto restore_opts;
2048 }
2049
2050 /*
2051 * We stop the GC thread if FS is mounted as RO
2052 * or if background_gc = off is passed in mount
2053 * option. Also sync the filesystem.
2054 */
2055 if ((*flags & SB_RDONLY) ||
2056 (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF &&
2057 !test_opt(sbi, GC_MERGE))) {
2058 if (sbi->gc_thread) {
2059 f2fs_stop_gc_thread(sbi);
2060 need_restart_gc = true;
2061 }
2062 } else if (!sbi->gc_thread) {
2063 err = f2fs_start_gc_thread(sbi);
2064 if (err)
2065 goto restore_opts;
2066 need_stop_gc = true;
2067 }
2068
2069 if (*flags & SB_RDONLY ||
2070 F2FS_OPTION(sbi).whint_mode != org_mount_opt.whint_mode) {
2071 sync_inodes_sb(sb);
2072
2073 set_sbi_flag(sbi, SBI_IS_DIRTY);
2074 set_sbi_flag(sbi, SBI_IS_CLOSE);
2075 f2fs_sync_fs(sb, 1);
2076 clear_sbi_flag(sbi, SBI_IS_CLOSE);
2077 }
2078
2079 if ((*flags & SB_RDONLY) || test_opt(sbi, DISABLE_CHECKPOINT) ||
2080 !test_opt(sbi, MERGE_CHECKPOINT)) {
2081 f2fs_stop_ckpt_thread(sbi);
2082 need_restart_ckpt = true;
2083 } else {
2084 err = f2fs_start_ckpt_thread(sbi);
2085 if (err) {
2086 f2fs_err(sbi,
2087 "Failed to start F2FS issue_checkpoint_thread (%d)",
2088 err);
2089 goto restore_gc;
2090 }
2091 need_stop_ckpt = true;
2092 }
2093
2094 /*
2095 * We stop issue flush thread if FS is mounted as RO
2096 * or if flush_merge is not passed in mount option.
2097 */
2098 if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) {
2099 clear_opt(sbi, FLUSH_MERGE);
2100 f2fs_destroy_flush_cmd_control(sbi, false);
2101 need_restart_flush = true;
2102 } else {
2103 err = f2fs_create_flush_cmd_control(sbi);
2104 if (err)
2105 goto restore_ckpt;
2106 need_stop_flush = true;
2107 }
2108
2109 if (checkpoint_changed) {
2110 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
2111 err = f2fs_disable_checkpoint(sbi);
2112 if (err)
2113 goto restore_flush;
2114 } else {
2115 f2fs_enable_checkpoint(sbi);
2116 }
2117 }
2118
2119 skip:
2120 #ifdef CONFIG_QUOTA
2121 /* Release old quota file names */
2122 for (i = 0; i < MAXQUOTAS; i++)
2123 kfree(org_mount_opt.s_qf_names[i]);
2124 #endif
2125 /* Update the POSIXACL Flag */
2126 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
2127 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
2128
2129 limit_reserve_root(sbi);
2130 adjust_unusable_cap_perc(sbi);
2131 *flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME);
2132 return 0;
2133 restore_flush:
2134 if (need_restart_flush) {
2135 if (f2fs_create_flush_cmd_control(sbi))
2136 f2fs_warn(sbi, "background flush thread has stopped");
2137 } else if (need_stop_flush) {
2138 clear_opt(sbi, FLUSH_MERGE);
2139 f2fs_destroy_flush_cmd_control(sbi, false);
2140 }
2141 restore_ckpt:
2142 if (need_restart_ckpt) {
2143 if (f2fs_start_ckpt_thread(sbi))
2144 f2fs_warn(sbi, "background ckpt thread has stopped");
2145 } else if (need_stop_ckpt) {
2146 f2fs_stop_ckpt_thread(sbi);
2147 }
2148 restore_gc:
2149 if (need_restart_gc) {
2150 if (f2fs_start_gc_thread(sbi))
2151 f2fs_warn(sbi, "background gc thread has stopped");
2152 } else if (need_stop_gc) {
2153 f2fs_stop_gc_thread(sbi);
2154 }
2155 restore_opts:
2156 #ifdef CONFIG_QUOTA
2157 F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt;
2158 for (i = 0; i < MAXQUOTAS; i++) {
2159 kfree(F2FS_OPTION(sbi).s_qf_names[i]);
2160 F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i];
2161 }
2162 #endif
2163 sbi->mount_opt = org_mount_opt;
2164 sb->s_flags = old_sb_flags;
2165 return err;
2166 }
2167
2168 #ifdef CONFIG_QUOTA
2169 /* Read data from quotafile */
f2fs_quota_read(struct super_block * sb,int type,char * data,size_t len,loff_t off)2170 static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data,
2171 size_t len, loff_t off)
2172 {
2173 struct inode *inode = sb_dqopt(sb)->files[type];
2174 struct address_space *mapping = inode->i_mapping;
2175 block_t blkidx = F2FS_BYTES_TO_BLK(off);
2176 int offset = off & (sb->s_blocksize - 1);
2177 int tocopy;
2178 size_t toread;
2179 loff_t i_size = i_size_read(inode);
2180 struct page *page;
2181 char *kaddr;
2182
2183 if (off > i_size)
2184 return 0;
2185
2186 if (off + len > i_size)
2187 len = i_size - off;
2188 toread = len;
2189 while (toread > 0) {
2190 tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread);
2191 repeat:
2192 page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS);
2193 if (IS_ERR(page)) {
2194 if (PTR_ERR(page) == -ENOMEM) {
2195 congestion_wait(BLK_RW_ASYNC,
2196 DEFAULT_IO_TIMEOUT);
2197 goto repeat;
2198 }
2199 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2200 return PTR_ERR(page);
2201 }
2202
2203 lock_page(page);
2204
2205 if (unlikely(page->mapping != mapping)) {
2206 f2fs_put_page(page, 1);
2207 goto repeat;
2208 }
2209 if (unlikely(!PageUptodate(page))) {
2210 f2fs_put_page(page, 1);
2211 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2212 return -EIO;
2213 }
2214
2215 kaddr = kmap_atomic(page);
2216 memcpy(data, kaddr + offset, tocopy);
2217 kunmap_atomic(kaddr);
2218 f2fs_put_page(page, 1);
2219
2220 offset = 0;
2221 toread -= tocopy;
2222 data += tocopy;
2223 blkidx++;
2224 }
2225 return len;
2226 }
2227
2228 /* Write to quotafile */
f2fs_quota_write(struct super_block * sb,int type,const char * data,size_t len,loff_t off)2229 static ssize_t f2fs_quota_write(struct super_block *sb, int type,
2230 const char *data, size_t len, loff_t off)
2231 {
2232 struct inode *inode = sb_dqopt(sb)->files[type];
2233 struct address_space *mapping = inode->i_mapping;
2234 const struct address_space_operations *a_ops = mapping->a_ops;
2235 int offset = off & (sb->s_blocksize - 1);
2236 size_t towrite = len;
2237 struct page *page;
2238 void *fsdata = NULL;
2239 char *kaddr;
2240 int err = 0;
2241 int tocopy;
2242
2243 while (towrite > 0) {
2244 tocopy = min_t(unsigned long, sb->s_blocksize - offset,
2245 towrite);
2246 retry:
2247 err = a_ops->write_begin(NULL, mapping, off, tocopy, 0,
2248 &page, &fsdata);
2249 if (unlikely(err)) {
2250 if (err == -ENOMEM) {
2251 congestion_wait(BLK_RW_ASYNC,
2252 DEFAULT_IO_TIMEOUT);
2253 goto retry;
2254 }
2255 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2256 break;
2257 }
2258
2259 kaddr = kmap_atomic(page);
2260 memcpy(kaddr + offset, data, tocopy);
2261 kunmap_atomic(kaddr);
2262 flush_dcache_page(page);
2263
2264 a_ops->write_end(NULL, mapping, off, tocopy, tocopy,
2265 page, fsdata);
2266 offset = 0;
2267 towrite -= tocopy;
2268 off += tocopy;
2269 data += tocopy;
2270 cond_resched();
2271 }
2272
2273 if (len == towrite)
2274 return err;
2275 inode->i_mtime = inode->i_ctime = current_time(inode);
2276 f2fs_mark_inode_dirty_sync(inode, false);
2277 return len - towrite;
2278 }
2279
f2fs_get_dquots(struct inode * inode)2280 static struct dquot **f2fs_get_dquots(struct inode *inode)
2281 {
2282 return F2FS_I(inode)->i_dquot;
2283 }
2284
f2fs_get_reserved_space(struct inode * inode)2285 static qsize_t *f2fs_get_reserved_space(struct inode *inode)
2286 {
2287 return &F2FS_I(inode)->i_reserved_quota;
2288 }
2289
f2fs_quota_on_mount(struct f2fs_sb_info * sbi,int type)2290 static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type)
2291 {
2292 if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) {
2293 f2fs_err(sbi, "quota sysfile may be corrupted, skip loading it");
2294 return 0;
2295 }
2296
2297 return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type],
2298 F2FS_OPTION(sbi).s_jquota_fmt, type);
2299 }
2300
f2fs_enable_quota_files(struct f2fs_sb_info * sbi,bool rdonly)2301 int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly)
2302 {
2303 int enabled = 0;
2304 int i, err;
2305
2306 if (f2fs_sb_has_quota_ino(sbi) && rdonly) {
2307 err = f2fs_enable_quotas(sbi->sb);
2308 if (err) {
2309 f2fs_err(sbi, "Cannot turn on quota_ino: %d", err);
2310 return 0;
2311 }
2312 return 1;
2313 }
2314
2315 for (i = 0; i < MAXQUOTAS; i++) {
2316 if (F2FS_OPTION(sbi).s_qf_names[i]) {
2317 err = f2fs_quota_on_mount(sbi, i);
2318 if (!err) {
2319 enabled = 1;
2320 continue;
2321 }
2322 f2fs_err(sbi, "Cannot turn on quotas: %d on %d",
2323 err, i);
2324 }
2325 }
2326 return enabled;
2327 }
2328
f2fs_quota_enable(struct super_block * sb,int type,int format_id,unsigned int flags)2329 static int f2fs_quota_enable(struct super_block *sb, int type, int format_id,
2330 unsigned int flags)
2331 {
2332 struct inode *qf_inode;
2333 unsigned long qf_inum;
2334 int err;
2335
2336 BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb)));
2337
2338 qf_inum = f2fs_qf_ino(sb, type);
2339 if (!qf_inum)
2340 return -EPERM;
2341
2342 qf_inode = f2fs_iget(sb, qf_inum);
2343 if (IS_ERR(qf_inode)) {
2344 f2fs_err(F2FS_SB(sb), "Bad quota inode %u:%lu", type, qf_inum);
2345 return PTR_ERR(qf_inode);
2346 }
2347
2348 /* Don't account quota for quota files to avoid recursion */
2349 qf_inode->i_flags |= S_NOQUOTA;
2350 err = dquot_load_quota_inode(qf_inode, type, format_id, flags);
2351 iput(qf_inode);
2352 return err;
2353 }
2354
f2fs_enable_quotas(struct super_block * sb)2355 static int f2fs_enable_quotas(struct super_block *sb)
2356 {
2357 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2358 int type, err = 0;
2359 unsigned long qf_inum;
2360 bool quota_mopt[MAXQUOTAS] = {
2361 test_opt(sbi, USRQUOTA),
2362 test_opt(sbi, GRPQUOTA),
2363 test_opt(sbi, PRJQUOTA),
2364 };
2365
2366 if (is_set_ckpt_flags(F2FS_SB(sb), CP_QUOTA_NEED_FSCK_FLAG)) {
2367 f2fs_err(sbi, "quota file may be corrupted, skip loading it");
2368 return 0;
2369 }
2370
2371 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE;
2372
2373 for (type = 0; type < MAXQUOTAS; type++) {
2374 qf_inum = f2fs_qf_ino(sb, type);
2375 if (qf_inum) {
2376 err = f2fs_quota_enable(sb, type, QFMT_VFS_V1,
2377 DQUOT_USAGE_ENABLED |
2378 (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0));
2379 if (err) {
2380 f2fs_err(sbi, "Failed to enable quota tracking (type=%d, err=%d). Please run fsck to fix.",
2381 type, err);
2382 for (type--; type >= 0; type--)
2383 dquot_quota_off(sb, type);
2384 set_sbi_flag(F2FS_SB(sb),
2385 SBI_QUOTA_NEED_REPAIR);
2386 return err;
2387 }
2388 }
2389 }
2390 return 0;
2391 }
2392
f2fs_quota_sync(struct super_block * sb,int type)2393 int f2fs_quota_sync(struct super_block *sb, int type)
2394 {
2395 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2396 struct quota_info *dqopt = sb_dqopt(sb);
2397 int cnt;
2398 int ret;
2399
2400 /*
2401 * do_quotactl
2402 * f2fs_quota_sync
2403 * down_read(quota_sem)
2404 * dquot_writeback_dquots()
2405 * f2fs_dquot_commit
2406 * block_operation
2407 * down_read(quota_sem)
2408 */
2409 f2fs_lock_op(sbi);
2410
2411 down_read(&sbi->quota_sem);
2412 ret = dquot_writeback_dquots(sb, type);
2413 if (ret)
2414 goto out;
2415
2416 /*
2417 * Now when everything is written we can discard the pagecache so
2418 * that userspace sees the changes.
2419 */
2420 for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
2421 struct address_space *mapping;
2422
2423 if (type != -1 && cnt != type)
2424 continue;
2425 if (!sb_has_quota_active(sb, cnt))
2426 continue;
2427
2428 mapping = dqopt->files[cnt]->i_mapping;
2429
2430 ret = filemap_fdatawrite(mapping);
2431 if (ret)
2432 goto out;
2433
2434 /* if we are using journalled quota */
2435 if (is_journalled_quota(sbi))
2436 continue;
2437
2438 ret = filemap_fdatawait(mapping);
2439 if (ret)
2440 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2441
2442 inode_lock(dqopt->files[cnt]);
2443 truncate_inode_pages(&dqopt->files[cnt]->i_data, 0);
2444 inode_unlock(dqopt->files[cnt]);
2445 }
2446 out:
2447 if (ret)
2448 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2449 up_read(&sbi->quota_sem);
2450 f2fs_unlock_op(sbi);
2451 return ret;
2452 }
2453
f2fs_quota_on(struct super_block * sb,int type,int format_id,const struct path * path)2454 static int f2fs_quota_on(struct super_block *sb, int type, int format_id,
2455 const struct path *path)
2456 {
2457 struct inode *inode;
2458 int err;
2459
2460 /* if quota sysfile exists, deny enabling quota with specific file */
2461 if (f2fs_sb_has_quota_ino(F2FS_SB(sb))) {
2462 f2fs_err(F2FS_SB(sb), "quota sysfile already exists");
2463 return -EBUSY;
2464 }
2465
2466 err = f2fs_quota_sync(sb, type);
2467 if (err)
2468 return err;
2469
2470 err = dquot_quota_on(sb, type, format_id, path);
2471 if (err)
2472 return err;
2473
2474 inode = d_inode(path->dentry);
2475
2476 inode_lock(inode);
2477 F2FS_I(inode)->i_flags |= F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL;
2478 f2fs_set_inode_flags(inode);
2479 inode_unlock(inode);
2480 f2fs_mark_inode_dirty_sync(inode, false);
2481
2482 return 0;
2483 }
2484
__f2fs_quota_off(struct super_block * sb,int type)2485 static int __f2fs_quota_off(struct super_block *sb, int type)
2486 {
2487 struct inode *inode = sb_dqopt(sb)->files[type];
2488 int err;
2489
2490 if (!inode || !igrab(inode))
2491 return dquot_quota_off(sb, type);
2492
2493 err = f2fs_quota_sync(sb, type);
2494 if (err)
2495 goto out_put;
2496
2497 err = dquot_quota_off(sb, type);
2498 if (err || f2fs_sb_has_quota_ino(F2FS_SB(sb)))
2499 goto out_put;
2500
2501 inode_lock(inode);
2502 F2FS_I(inode)->i_flags &= ~(F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL);
2503 f2fs_set_inode_flags(inode);
2504 inode_unlock(inode);
2505 f2fs_mark_inode_dirty_sync(inode, false);
2506 out_put:
2507 iput(inode);
2508 return err;
2509 }
2510
f2fs_quota_off(struct super_block * sb,int type)2511 static int f2fs_quota_off(struct super_block *sb, int type)
2512 {
2513 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2514 int err;
2515
2516 err = __f2fs_quota_off(sb, type);
2517
2518 /*
2519 * quotactl can shutdown journalled quota, result in inconsistence
2520 * between quota record and fs data by following updates, tag the
2521 * flag to let fsck be aware of it.
2522 */
2523 if (is_journalled_quota(sbi))
2524 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2525 return err;
2526 }
2527
f2fs_quota_off_umount(struct super_block * sb)2528 void f2fs_quota_off_umount(struct super_block *sb)
2529 {
2530 int type;
2531 int err;
2532
2533 for (type = 0; type < MAXQUOTAS; type++) {
2534 err = __f2fs_quota_off(sb, type);
2535 if (err) {
2536 int ret = dquot_quota_off(sb, type);
2537
2538 f2fs_err(F2FS_SB(sb), "Fail to turn off disk quota (type: %d, err: %d, ret:%d), Please run fsck to fix it.",
2539 type, err, ret);
2540 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2541 }
2542 }
2543 /*
2544 * In case of checkpoint=disable, we must flush quota blocks.
2545 * This can cause NULL exception for node_inode in end_io, since
2546 * put_super already dropped it.
2547 */
2548 sync_filesystem(sb);
2549 }
2550
f2fs_truncate_quota_inode_pages(struct super_block * sb)2551 static void f2fs_truncate_quota_inode_pages(struct super_block *sb)
2552 {
2553 struct quota_info *dqopt = sb_dqopt(sb);
2554 int type;
2555
2556 for (type = 0; type < MAXQUOTAS; type++) {
2557 if (!dqopt->files[type])
2558 continue;
2559 f2fs_inode_synced(dqopt->files[type]);
2560 }
2561 }
2562
f2fs_dquot_commit(struct dquot * dquot)2563 static int f2fs_dquot_commit(struct dquot *dquot)
2564 {
2565 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
2566 int ret;
2567
2568 down_read_nested(&sbi->quota_sem, SINGLE_DEPTH_NESTING);
2569 ret = dquot_commit(dquot);
2570 if (ret < 0)
2571 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2572 up_read(&sbi->quota_sem);
2573 return ret;
2574 }
2575
f2fs_dquot_acquire(struct dquot * dquot)2576 static int f2fs_dquot_acquire(struct dquot *dquot)
2577 {
2578 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
2579 int ret;
2580
2581 down_read(&sbi->quota_sem);
2582 ret = dquot_acquire(dquot);
2583 if (ret < 0)
2584 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2585 up_read(&sbi->quota_sem);
2586 return ret;
2587 }
2588
f2fs_dquot_release(struct dquot * dquot)2589 static int f2fs_dquot_release(struct dquot *dquot)
2590 {
2591 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
2592 int ret = dquot_release(dquot);
2593
2594 if (ret < 0)
2595 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2596 return ret;
2597 }
2598
f2fs_dquot_mark_dquot_dirty(struct dquot * dquot)2599 static int f2fs_dquot_mark_dquot_dirty(struct dquot *dquot)
2600 {
2601 struct super_block *sb = dquot->dq_sb;
2602 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2603 int ret = dquot_mark_dquot_dirty(dquot);
2604
2605 /* if we are using journalled quota */
2606 if (is_journalled_quota(sbi))
2607 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
2608
2609 return ret;
2610 }
2611
f2fs_dquot_commit_info(struct super_block * sb,int type)2612 static int f2fs_dquot_commit_info(struct super_block *sb, int type)
2613 {
2614 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2615 int ret = dquot_commit_info(sb, type);
2616
2617 if (ret < 0)
2618 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2619 return ret;
2620 }
2621
f2fs_get_projid(struct inode * inode,kprojid_t * projid)2622 static int f2fs_get_projid(struct inode *inode, kprojid_t *projid)
2623 {
2624 *projid = F2FS_I(inode)->i_projid;
2625 return 0;
2626 }
2627
2628 static const struct dquot_operations f2fs_quota_operations = {
2629 .get_reserved_space = f2fs_get_reserved_space,
2630 .write_dquot = f2fs_dquot_commit,
2631 .acquire_dquot = f2fs_dquot_acquire,
2632 .release_dquot = f2fs_dquot_release,
2633 .mark_dirty = f2fs_dquot_mark_dquot_dirty,
2634 .write_info = f2fs_dquot_commit_info,
2635 .alloc_dquot = dquot_alloc,
2636 .destroy_dquot = dquot_destroy,
2637 .get_projid = f2fs_get_projid,
2638 .get_next_id = dquot_get_next_id,
2639 };
2640
2641 static const struct quotactl_ops f2fs_quotactl_ops = {
2642 .quota_on = f2fs_quota_on,
2643 .quota_off = f2fs_quota_off,
2644 .quota_sync = f2fs_quota_sync,
2645 .get_state = dquot_get_state,
2646 .set_info = dquot_set_dqinfo,
2647 .get_dqblk = dquot_get_dqblk,
2648 .set_dqblk = dquot_set_dqblk,
2649 .get_nextdqblk = dquot_get_next_dqblk,
2650 };
2651 #else
f2fs_quota_sync(struct super_block * sb,int type)2652 int f2fs_quota_sync(struct super_block *sb, int type)
2653 {
2654 return 0;
2655 }
2656
f2fs_quota_off_umount(struct super_block * sb)2657 void f2fs_quota_off_umount(struct super_block *sb)
2658 {
2659 }
2660 #endif
2661
2662 static const struct super_operations f2fs_sops = {
2663 .alloc_inode = f2fs_alloc_inode,
2664 .free_inode = f2fs_free_inode,
2665 .drop_inode = f2fs_drop_inode,
2666 .write_inode = f2fs_write_inode,
2667 .dirty_inode = f2fs_dirty_inode,
2668 .show_options = f2fs_show_options,
2669 #ifdef CONFIG_QUOTA
2670 .quota_read = f2fs_quota_read,
2671 .quota_write = f2fs_quota_write,
2672 .get_dquots = f2fs_get_dquots,
2673 #endif
2674 .evict_inode = f2fs_evict_inode,
2675 .put_super = f2fs_put_super,
2676 .sync_fs = f2fs_sync_fs,
2677 .freeze_fs = f2fs_freeze,
2678 .unfreeze_fs = f2fs_unfreeze,
2679 .statfs = f2fs_statfs,
2680 .remount_fs = f2fs_remount,
2681 };
2682
2683 #ifdef CONFIG_FS_ENCRYPTION
f2fs_get_context(struct inode * inode,void * ctx,size_t len)2684 static int f2fs_get_context(struct inode *inode, void *ctx, size_t len)
2685 {
2686 return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2687 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2688 ctx, len, NULL);
2689 }
2690
f2fs_set_context(struct inode * inode,const void * ctx,size_t len,void * fs_data)2691 static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len,
2692 void *fs_data)
2693 {
2694 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2695
2696 /*
2697 * Encrypting the root directory is not allowed because fsck
2698 * expects lost+found directory to exist and remain unencrypted
2699 * if LOST_FOUND feature is enabled.
2700 *
2701 */
2702 if (f2fs_sb_has_lost_found(sbi) &&
2703 inode->i_ino == F2FS_ROOT_INO(sbi))
2704 return -EPERM;
2705
2706 return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2707 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2708 ctx, len, fs_data, XATTR_CREATE);
2709 }
2710
f2fs_get_dummy_policy(struct super_block * sb)2711 static const union fscrypt_policy *f2fs_get_dummy_policy(struct super_block *sb)
2712 {
2713 return F2FS_OPTION(F2FS_SB(sb)).dummy_enc_policy.policy;
2714 }
2715
f2fs_has_stable_inodes(struct super_block * sb)2716 static bool f2fs_has_stable_inodes(struct super_block *sb)
2717 {
2718 return true;
2719 }
2720
f2fs_get_ino_and_lblk_bits(struct super_block * sb,int * ino_bits_ret,int * lblk_bits_ret)2721 static void f2fs_get_ino_and_lblk_bits(struct super_block *sb,
2722 int *ino_bits_ret, int *lblk_bits_ret)
2723 {
2724 *ino_bits_ret = 8 * sizeof(nid_t);
2725 *lblk_bits_ret = 8 * sizeof(block_t);
2726 }
2727
f2fs_get_num_devices(struct super_block * sb)2728 static int f2fs_get_num_devices(struct super_block *sb)
2729 {
2730 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2731
2732 if (f2fs_is_multi_device(sbi))
2733 return sbi->s_ndevs;
2734 return 1;
2735 }
2736
f2fs_get_devices(struct super_block * sb,struct request_queue ** devs)2737 static void f2fs_get_devices(struct super_block *sb,
2738 struct request_queue **devs)
2739 {
2740 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2741 int i;
2742
2743 for (i = 0; i < sbi->s_ndevs; i++)
2744 devs[i] = bdev_get_queue(FDEV(i).bdev);
2745 }
2746
2747 static const struct fscrypt_operations f2fs_cryptops = {
2748 .key_prefix = "f2fs:",
2749 .get_context = f2fs_get_context,
2750 .set_context = f2fs_set_context,
2751 .get_dummy_policy = f2fs_get_dummy_policy,
2752 .empty_dir = f2fs_empty_dir,
2753 .max_namelen = F2FS_NAME_LEN,
2754 .has_stable_inodes = f2fs_has_stable_inodes,
2755 .get_ino_and_lblk_bits = f2fs_get_ino_and_lblk_bits,
2756 .get_num_devices = f2fs_get_num_devices,
2757 .get_devices = f2fs_get_devices,
2758 };
2759 #endif
2760
f2fs_nfs_get_inode(struct super_block * sb,u64 ino,u32 generation)2761 static struct inode *f2fs_nfs_get_inode(struct super_block *sb,
2762 u64 ino, u32 generation)
2763 {
2764 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2765 struct inode *inode;
2766
2767 if (f2fs_check_nid_range(sbi, ino))
2768 return ERR_PTR(-ESTALE);
2769
2770 /*
2771 * f2fs_iget isn't quite right if the inode is currently unallocated!
2772 * However f2fs_iget currently does appropriate checks to handle stale
2773 * inodes so everything is OK.
2774 */
2775 inode = f2fs_iget(sb, ino);
2776 if (IS_ERR(inode))
2777 return ERR_CAST(inode);
2778 if (unlikely(generation && inode->i_generation != generation)) {
2779 /* we didn't find the right inode.. */
2780 iput(inode);
2781 return ERR_PTR(-ESTALE);
2782 }
2783 return inode;
2784 }
2785
f2fs_fh_to_dentry(struct super_block * sb,struct fid * fid,int fh_len,int fh_type)2786 static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid,
2787 int fh_len, int fh_type)
2788 {
2789 return generic_fh_to_dentry(sb, fid, fh_len, fh_type,
2790 f2fs_nfs_get_inode);
2791 }
2792
f2fs_fh_to_parent(struct super_block * sb,struct fid * fid,int fh_len,int fh_type)2793 static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid,
2794 int fh_len, int fh_type)
2795 {
2796 return generic_fh_to_parent(sb, fid, fh_len, fh_type,
2797 f2fs_nfs_get_inode);
2798 }
2799
2800 static const struct export_operations f2fs_export_ops = {
2801 .fh_to_dentry = f2fs_fh_to_dentry,
2802 .fh_to_parent = f2fs_fh_to_parent,
2803 .get_parent = f2fs_get_parent,
2804 };
2805
max_file_blocks(struct inode * inode)2806 loff_t max_file_blocks(struct inode *inode)
2807 {
2808 loff_t result = 0;
2809 loff_t leaf_count;
2810
2811 /*
2812 * note: previously, result is equal to (DEF_ADDRS_PER_INODE -
2813 * DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more
2814 * space in inode.i_addr, it will be more safe to reassign
2815 * result as zero.
2816 */
2817
2818 if (inode && f2fs_compressed_file(inode))
2819 leaf_count = ADDRS_PER_BLOCK(inode);
2820 else
2821 leaf_count = DEF_ADDRS_PER_BLOCK;
2822
2823 /* two direct node blocks */
2824 result += (leaf_count * 2);
2825
2826 /* two indirect node blocks */
2827 leaf_count *= NIDS_PER_BLOCK;
2828 result += (leaf_count * 2);
2829
2830 /* one double indirect node block */
2831 leaf_count *= NIDS_PER_BLOCK;
2832 result += leaf_count;
2833
2834 return result;
2835 }
2836
__f2fs_commit_super(struct buffer_head * bh,struct f2fs_super_block * super)2837 static int __f2fs_commit_super(struct buffer_head *bh,
2838 struct f2fs_super_block *super)
2839 {
2840 lock_buffer(bh);
2841 if (super)
2842 memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super));
2843 set_buffer_dirty(bh);
2844 unlock_buffer(bh);
2845
2846 /* it's rare case, we can do fua all the time */
2847 return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA);
2848 }
2849
sanity_check_area_boundary(struct f2fs_sb_info * sbi,struct buffer_head * bh)2850 static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi,
2851 struct buffer_head *bh)
2852 {
2853 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
2854 (bh->b_data + F2FS_SUPER_OFFSET);
2855 struct super_block *sb = sbi->sb;
2856 u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr);
2857 u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr);
2858 u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr);
2859 u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr);
2860 u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr);
2861 u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr);
2862 u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt);
2863 u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit);
2864 u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat);
2865 u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa);
2866 u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
2867 u32 segment_count = le32_to_cpu(raw_super->segment_count);
2868 u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
2869 u64 main_end_blkaddr = main_blkaddr +
2870 (segment_count_main << log_blocks_per_seg);
2871 u64 seg_end_blkaddr = segment0_blkaddr +
2872 (segment_count << log_blocks_per_seg);
2873
2874 if (segment0_blkaddr != cp_blkaddr) {
2875 f2fs_info(sbi, "Mismatch start address, segment0(%u) cp_blkaddr(%u)",
2876 segment0_blkaddr, cp_blkaddr);
2877 return true;
2878 }
2879
2880 if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) !=
2881 sit_blkaddr) {
2882 f2fs_info(sbi, "Wrong CP boundary, start(%u) end(%u) blocks(%u)",
2883 cp_blkaddr, sit_blkaddr,
2884 segment_count_ckpt << log_blocks_per_seg);
2885 return true;
2886 }
2887
2888 if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) !=
2889 nat_blkaddr) {
2890 f2fs_info(sbi, "Wrong SIT boundary, start(%u) end(%u) blocks(%u)",
2891 sit_blkaddr, nat_blkaddr,
2892 segment_count_sit << log_blocks_per_seg);
2893 return true;
2894 }
2895
2896 if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) !=
2897 ssa_blkaddr) {
2898 f2fs_info(sbi, "Wrong NAT boundary, start(%u) end(%u) blocks(%u)",
2899 nat_blkaddr, ssa_blkaddr,
2900 segment_count_nat << log_blocks_per_seg);
2901 return true;
2902 }
2903
2904 if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) !=
2905 main_blkaddr) {
2906 f2fs_info(sbi, "Wrong SSA boundary, start(%u) end(%u) blocks(%u)",
2907 ssa_blkaddr, main_blkaddr,
2908 segment_count_ssa << log_blocks_per_seg);
2909 return true;
2910 }
2911
2912 if (main_end_blkaddr > seg_end_blkaddr) {
2913 f2fs_info(sbi, "Wrong MAIN_AREA boundary, start(%u) end(%llu) block(%u)",
2914 main_blkaddr, seg_end_blkaddr,
2915 segment_count_main << log_blocks_per_seg);
2916 return true;
2917 } else if (main_end_blkaddr < seg_end_blkaddr) {
2918 int err = 0;
2919 char *res;
2920
2921 /* fix in-memory information all the time */
2922 raw_super->segment_count = cpu_to_le32((main_end_blkaddr -
2923 segment0_blkaddr) >> log_blocks_per_seg);
2924
2925 if (f2fs_readonly(sb) || bdev_read_only(sb->s_bdev)) {
2926 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
2927 res = "internally";
2928 } else {
2929 err = __f2fs_commit_super(bh, NULL);
2930 res = err ? "failed" : "done";
2931 }
2932 f2fs_info(sbi, "Fix alignment : %s, start(%u) end(%llu) block(%u)",
2933 res, main_blkaddr, seg_end_blkaddr,
2934 segment_count_main << log_blocks_per_seg);
2935 if (err)
2936 return true;
2937 }
2938 return false;
2939 }
2940
sanity_check_raw_super(struct f2fs_sb_info * sbi,struct buffer_head * bh)2941 static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
2942 struct buffer_head *bh)
2943 {
2944 block_t segment_count, segs_per_sec, secs_per_zone, segment_count_main;
2945 block_t total_sections, blocks_per_seg;
2946 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
2947 (bh->b_data + F2FS_SUPER_OFFSET);
2948 size_t crc_offset = 0;
2949 __u32 crc = 0;
2950
2951 if (le32_to_cpu(raw_super->magic) != F2FS_SUPER_MAGIC) {
2952 f2fs_info(sbi, "Magic Mismatch, valid(0x%x) - read(0x%x)",
2953 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic));
2954 return -EINVAL;
2955 }
2956
2957 /* Check checksum_offset and crc in superblock */
2958 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_SB_CHKSUM)) {
2959 crc_offset = le32_to_cpu(raw_super->checksum_offset);
2960 if (crc_offset !=
2961 offsetof(struct f2fs_super_block, crc)) {
2962 f2fs_info(sbi, "Invalid SB checksum offset: %zu",
2963 crc_offset);
2964 return -EFSCORRUPTED;
2965 }
2966 crc = le32_to_cpu(raw_super->crc);
2967 if (!f2fs_crc_valid(sbi, crc, raw_super, crc_offset)) {
2968 f2fs_info(sbi, "Invalid SB checksum value: %u", crc);
2969 return -EFSCORRUPTED;
2970 }
2971 }
2972
2973 /* Currently, support only 4KB block size */
2974 if (le32_to_cpu(raw_super->log_blocksize) != F2FS_BLKSIZE_BITS) {
2975 f2fs_info(sbi, "Invalid log_blocksize (%u), supports only %u",
2976 le32_to_cpu(raw_super->log_blocksize),
2977 F2FS_BLKSIZE_BITS);
2978 return -EFSCORRUPTED;
2979 }
2980
2981 /* check log blocks per segment */
2982 if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) {
2983 f2fs_info(sbi, "Invalid log blocks per segment (%u)",
2984 le32_to_cpu(raw_super->log_blocks_per_seg));
2985 return -EFSCORRUPTED;
2986 }
2987
2988 /* Currently, support 512/1024/2048/4096 bytes sector size */
2989 if (le32_to_cpu(raw_super->log_sectorsize) >
2990 F2FS_MAX_LOG_SECTOR_SIZE ||
2991 le32_to_cpu(raw_super->log_sectorsize) <
2992 F2FS_MIN_LOG_SECTOR_SIZE) {
2993 f2fs_info(sbi, "Invalid log sectorsize (%u)",
2994 le32_to_cpu(raw_super->log_sectorsize));
2995 return -EFSCORRUPTED;
2996 }
2997 if (le32_to_cpu(raw_super->log_sectors_per_block) +
2998 le32_to_cpu(raw_super->log_sectorsize) !=
2999 F2FS_MAX_LOG_SECTOR_SIZE) {
3000 f2fs_info(sbi, "Invalid log sectors per block(%u) log sectorsize(%u)",
3001 le32_to_cpu(raw_super->log_sectors_per_block),
3002 le32_to_cpu(raw_super->log_sectorsize));
3003 return -EFSCORRUPTED;
3004 }
3005
3006 segment_count = le32_to_cpu(raw_super->segment_count);
3007 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
3008 segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
3009 secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
3010 total_sections = le32_to_cpu(raw_super->section_count);
3011
3012 /* blocks_per_seg should be 512, given the above check */
3013 blocks_per_seg = 1 << le32_to_cpu(raw_super->log_blocks_per_seg);
3014
3015 if (segment_count > F2FS_MAX_SEGMENT ||
3016 segment_count < F2FS_MIN_SEGMENTS) {
3017 f2fs_info(sbi, "Invalid segment count (%u)", segment_count);
3018 return -EFSCORRUPTED;
3019 }
3020
3021 if (total_sections > segment_count_main || total_sections < 1 ||
3022 segs_per_sec > segment_count || !segs_per_sec) {
3023 f2fs_info(sbi, "Invalid segment/section count (%u, %u x %u)",
3024 segment_count, total_sections, segs_per_sec);
3025 return -EFSCORRUPTED;
3026 }
3027
3028 if (segment_count_main != total_sections * segs_per_sec) {
3029 f2fs_info(sbi, "Invalid segment/section count (%u != %u * %u)",
3030 segment_count_main, total_sections, segs_per_sec);
3031 return -EFSCORRUPTED;
3032 }
3033
3034 if ((segment_count / segs_per_sec) < total_sections) {
3035 f2fs_info(sbi, "Small segment_count (%u < %u * %u)",
3036 segment_count, segs_per_sec, total_sections);
3037 return -EFSCORRUPTED;
3038 }
3039
3040 if (segment_count > (le64_to_cpu(raw_super->block_count) >> 9)) {
3041 f2fs_info(sbi, "Wrong segment_count / block_count (%u > %llu)",
3042 segment_count, le64_to_cpu(raw_super->block_count));
3043 return -EFSCORRUPTED;
3044 }
3045
3046 if (RDEV(0).path[0]) {
3047 block_t dev_seg_count = le32_to_cpu(RDEV(0).total_segments);
3048 int i = 1;
3049
3050 while (i < MAX_DEVICES && RDEV(i).path[0]) {
3051 dev_seg_count += le32_to_cpu(RDEV(i).total_segments);
3052 i++;
3053 }
3054 if (segment_count != dev_seg_count) {
3055 f2fs_info(sbi, "Segment count (%u) mismatch with total segments from devices (%u)",
3056 segment_count, dev_seg_count);
3057 return -EFSCORRUPTED;
3058 }
3059 } else {
3060 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_BLKZONED) &&
3061 !bdev_is_zoned(sbi->sb->s_bdev)) {
3062 f2fs_info(sbi, "Zoned block device path is missing");
3063 return -EFSCORRUPTED;
3064 }
3065 }
3066
3067 if (secs_per_zone > total_sections || !secs_per_zone) {
3068 f2fs_info(sbi, "Wrong secs_per_zone / total_sections (%u, %u)",
3069 secs_per_zone, total_sections);
3070 return -EFSCORRUPTED;
3071 }
3072 if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION ||
3073 raw_super->hot_ext_count > F2FS_MAX_EXTENSION ||
3074 (le32_to_cpu(raw_super->extension_count) +
3075 raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) {
3076 f2fs_info(sbi, "Corrupted extension count (%u + %u > %u)",
3077 le32_to_cpu(raw_super->extension_count),
3078 raw_super->hot_ext_count,
3079 F2FS_MAX_EXTENSION);
3080 return -EFSCORRUPTED;
3081 }
3082
3083 if (le32_to_cpu(raw_super->cp_payload) >
3084 (blocks_per_seg - F2FS_CP_PACKS)) {
3085 f2fs_info(sbi, "Insane cp_payload (%u > %u)",
3086 le32_to_cpu(raw_super->cp_payload),
3087 blocks_per_seg - F2FS_CP_PACKS);
3088 return -EFSCORRUPTED;
3089 }
3090
3091 /* check reserved ino info */
3092 if (le32_to_cpu(raw_super->node_ino) != 1 ||
3093 le32_to_cpu(raw_super->meta_ino) != 2 ||
3094 le32_to_cpu(raw_super->root_ino) != 3) {
3095 f2fs_info(sbi, "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)",
3096 le32_to_cpu(raw_super->node_ino),
3097 le32_to_cpu(raw_super->meta_ino),
3098 le32_to_cpu(raw_super->root_ino));
3099 return -EFSCORRUPTED;
3100 }
3101
3102 /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */
3103 if (sanity_check_area_boundary(sbi, bh))
3104 return -EFSCORRUPTED;
3105
3106 return 0;
3107 }
3108
f2fs_sanity_check_ckpt(struct f2fs_sb_info * sbi)3109 int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi)
3110 {
3111 unsigned int total, fsmeta;
3112 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
3113 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
3114 unsigned int ovp_segments, reserved_segments;
3115 unsigned int main_segs, blocks_per_seg;
3116 unsigned int sit_segs, nat_segs;
3117 unsigned int sit_bitmap_size, nat_bitmap_size;
3118 unsigned int log_blocks_per_seg;
3119 unsigned int segment_count_main;
3120 unsigned int cp_pack_start_sum, cp_payload;
3121 block_t user_block_count, valid_user_blocks;
3122 block_t avail_node_count, valid_node_count;
3123 int i, j;
3124
3125 total = le32_to_cpu(raw_super->segment_count);
3126 fsmeta = le32_to_cpu(raw_super->segment_count_ckpt);
3127 sit_segs = le32_to_cpu(raw_super->segment_count_sit);
3128 fsmeta += sit_segs;
3129 nat_segs = le32_to_cpu(raw_super->segment_count_nat);
3130 fsmeta += nat_segs;
3131 fsmeta += le32_to_cpu(ckpt->rsvd_segment_count);
3132 fsmeta += le32_to_cpu(raw_super->segment_count_ssa);
3133
3134 if (unlikely(fsmeta >= total))
3135 return 1;
3136
3137 ovp_segments = le32_to_cpu(ckpt->overprov_segment_count);
3138 reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count);
3139
3140 if (unlikely(fsmeta < F2FS_MIN_META_SEGMENTS ||
3141 ovp_segments == 0 || reserved_segments == 0)) {
3142 f2fs_err(sbi, "Wrong layout: check mkfs.f2fs version");
3143 return 1;
3144 }
3145
3146 user_block_count = le64_to_cpu(ckpt->user_block_count);
3147 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
3148 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
3149 if (!user_block_count || user_block_count >=
3150 segment_count_main << log_blocks_per_seg) {
3151 f2fs_err(sbi, "Wrong user_block_count: %u",
3152 user_block_count);
3153 return 1;
3154 }
3155
3156 valid_user_blocks = le64_to_cpu(ckpt->valid_block_count);
3157 if (valid_user_blocks > user_block_count) {
3158 f2fs_err(sbi, "Wrong valid_user_blocks: %u, user_block_count: %u",
3159 valid_user_blocks, user_block_count);
3160 return 1;
3161 }
3162
3163 valid_node_count = le32_to_cpu(ckpt->valid_node_count);
3164 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
3165 if (valid_node_count > avail_node_count) {
3166 f2fs_err(sbi, "Wrong valid_node_count: %u, avail_node_count: %u",
3167 valid_node_count, avail_node_count);
3168 return 1;
3169 }
3170
3171 main_segs = le32_to_cpu(raw_super->segment_count_main);
3172 blocks_per_seg = sbi->blocks_per_seg;
3173
3174 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
3175 if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs ||
3176 le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg)
3177 return 1;
3178 for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) {
3179 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
3180 le32_to_cpu(ckpt->cur_node_segno[j])) {
3181 f2fs_err(sbi, "Node segment (%u, %u) has the same segno: %u",
3182 i, j,
3183 le32_to_cpu(ckpt->cur_node_segno[i]));
3184 return 1;
3185 }
3186 }
3187 }
3188 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {
3189 if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs ||
3190 le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg)
3191 return 1;
3192 for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) {
3193 if (le32_to_cpu(ckpt->cur_data_segno[i]) ==
3194 le32_to_cpu(ckpt->cur_data_segno[j])) {
3195 f2fs_err(sbi, "Data segment (%u, %u) has the same segno: %u",
3196 i, j,
3197 le32_to_cpu(ckpt->cur_data_segno[i]));
3198 return 1;
3199 }
3200 }
3201 }
3202 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
3203 for (j = 0; j < NR_CURSEG_DATA_TYPE; j++) {
3204 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
3205 le32_to_cpu(ckpt->cur_data_segno[j])) {
3206 f2fs_err(sbi, "Node segment (%u) and Data segment (%u) has the same segno: %u",
3207 i, j,
3208 le32_to_cpu(ckpt->cur_node_segno[i]));
3209 return 1;
3210 }
3211 }
3212 }
3213
3214 sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
3215 nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
3216
3217 if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 ||
3218 nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) {
3219 f2fs_err(sbi, "Wrong bitmap size: sit: %u, nat:%u",
3220 sit_bitmap_size, nat_bitmap_size);
3221 return 1;
3222 }
3223
3224 cp_pack_start_sum = __start_sum_addr(sbi);
3225 cp_payload = __cp_payload(sbi);
3226 if (cp_pack_start_sum < cp_payload + 1 ||
3227 cp_pack_start_sum > blocks_per_seg - 1 -
3228 NR_CURSEG_PERSIST_TYPE) {
3229 f2fs_err(sbi, "Wrong cp_pack_start_sum: %u",
3230 cp_pack_start_sum);
3231 return 1;
3232 }
3233
3234 if (__is_set_ckpt_flags(ckpt, CP_LARGE_NAT_BITMAP_FLAG) &&
3235 le32_to_cpu(ckpt->checksum_offset) != CP_MIN_CHKSUM_OFFSET) {
3236 f2fs_warn(sbi, "using deprecated layout of large_nat_bitmap, "
3237 "please run fsck v1.13.0 or higher to repair, chksum_offset: %u, "
3238 "fixed with patch: \"f2fs-tools: relocate chksum_offset for large_nat_bitmap feature\"",
3239 le32_to_cpu(ckpt->checksum_offset));
3240 return 1;
3241 }
3242
3243 if (unlikely(f2fs_cp_error(sbi))) {
3244 f2fs_err(sbi, "A bug case: need to run fsck");
3245 return 1;
3246 }
3247 return 0;
3248 }
3249
init_sb_info(struct f2fs_sb_info * sbi)3250 static void init_sb_info(struct f2fs_sb_info *sbi)
3251 {
3252 struct f2fs_super_block *raw_super = sbi->raw_super;
3253 int i;
3254
3255 sbi->log_sectors_per_block =
3256 le32_to_cpu(raw_super->log_sectors_per_block);
3257 sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize);
3258 sbi->blocksize = 1 << sbi->log_blocksize;
3259 sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
3260 sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg;
3261 sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
3262 sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
3263 sbi->total_sections = le32_to_cpu(raw_super->section_count);
3264 sbi->total_node_count =
3265 (le32_to_cpu(raw_super->segment_count_nat) / 2)
3266 * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK;
3267 F2FS_ROOT_INO(sbi) = le32_to_cpu(raw_super->root_ino);
3268 F2FS_NODE_INO(sbi) = le32_to_cpu(raw_super->node_ino);
3269 F2FS_META_INO(sbi) = le32_to_cpu(raw_super->meta_ino);
3270 sbi->cur_victim_sec = NULL_SECNO;
3271 sbi->next_victim_seg[BG_GC] = NULL_SEGNO;
3272 sbi->next_victim_seg[FG_GC] = NULL_SEGNO;
3273 sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH;
3274 sbi->migration_granularity = sbi->segs_per_sec;
3275
3276 sbi->dir_level = DEF_DIR_LEVEL;
3277 sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL;
3278 sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL;
3279 sbi->interval_time[DISCARD_TIME] = DEF_IDLE_INTERVAL;
3280 sbi->interval_time[GC_TIME] = DEF_IDLE_INTERVAL;
3281 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_INTERVAL;
3282 sbi->interval_time[UMOUNT_DISCARD_TIMEOUT] =
3283 DEF_UMOUNT_DISCARD_TIMEOUT;
3284 clear_sbi_flag(sbi, SBI_NEED_FSCK);
3285
3286 for (i = 0; i < NR_COUNT_TYPE; i++)
3287 atomic_set(&sbi->nr_pages[i], 0);
3288
3289 for (i = 0; i < META; i++)
3290 atomic_set(&sbi->wb_sync_req[i], 0);
3291
3292 INIT_LIST_HEAD(&sbi->s_list);
3293 mutex_init(&sbi->umount_mutex);
3294 init_rwsem(&sbi->io_order_lock);
3295 spin_lock_init(&sbi->cp_lock);
3296
3297 sbi->dirty_device = 0;
3298 spin_lock_init(&sbi->dev_lock);
3299
3300 init_rwsem(&sbi->sb_lock);
3301 init_rwsem(&sbi->pin_sem);
3302 }
3303
init_percpu_info(struct f2fs_sb_info * sbi)3304 static int init_percpu_info(struct f2fs_sb_info *sbi)
3305 {
3306 int err;
3307
3308 err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL);
3309 if (err)
3310 return err;
3311
3312 err = percpu_counter_init(&sbi->total_valid_inode_count, 0,
3313 GFP_KERNEL);
3314 if (err)
3315 percpu_counter_destroy(&sbi->alloc_valid_block_count);
3316
3317 return err;
3318 }
3319
3320 #ifdef CONFIG_BLK_DEV_ZONED
3321
3322 struct f2fs_report_zones_args {
3323 struct f2fs_dev_info *dev;
3324 bool zone_cap_mismatch;
3325 };
3326
f2fs_report_zone_cb(struct blk_zone * zone,unsigned int idx,void * data)3327 static int f2fs_report_zone_cb(struct blk_zone *zone, unsigned int idx,
3328 void *data)
3329 {
3330 struct f2fs_report_zones_args *rz_args = data;
3331
3332 if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL)
3333 return 0;
3334
3335 set_bit(idx, rz_args->dev->blkz_seq);
3336 rz_args->dev->zone_capacity_blocks[idx] = zone->capacity >>
3337 F2FS_LOG_SECTORS_PER_BLOCK;
3338 if (zone->len != zone->capacity && !rz_args->zone_cap_mismatch)
3339 rz_args->zone_cap_mismatch = true;
3340
3341 return 0;
3342 }
3343
init_blkz_info(struct f2fs_sb_info * sbi,int devi)3344 static int init_blkz_info(struct f2fs_sb_info *sbi, int devi)
3345 {
3346 struct block_device *bdev = FDEV(devi).bdev;
3347 sector_t nr_sectors = bdev_nr_sectors(bdev);
3348 struct f2fs_report_zones_args rep_zone_arg;
3349 int ret;
3350
3351 if (!f2fs_sb_has_blkzoned(sbi))
3352 return 0;
3353
3354 if (sbi->blocks_per_blkz && sbi->blocks_per_blkz !=
3355 SECTOR_TO_BLOCK(bdev_zone_sectors(bdev)))
3356 return -EINVAL;
3357 sbi->blocks_per_blkz = SECTOR_TO_BLOCK(bdev_zone_sectors(bdev));
3358 if (sbi->log_blocks_per_blkz && sbi->log_blocks_per_blkz !=
3359 __ilog2_u32(sbi->blocks_per_blkz))
3360 return -EINVAL;
3361 sbi->log_blocks_per_blkz = __ilog2_u32(sbi->blocks_per_blkz);
3362 FDEV(devi).nr_blkz = SECTOR_TO_BLOCK(nr_sectors) >>
3363 sbi->log_blocks_per_blkz;
3364 if (nr_sectors & (bdev_zone_sectors(bdev) - 1))
3365 FDEV(devi).nr_blkz++;
3366
3367 FDEV(devi).blkz_seq = f2fs_kvzalloc(sbi,
3368 BITS_TO_LONGS(FDEV(devi).nr_blkz)
3369 * sizeof(unsigned long),
3370 GFP_KERNEL);
3371 if (!FDEV(devi).blkz_seq)
3372 return -ENOMEM;
3373
3374 /* Get block zones type and zone-capacity */
3375 FDEV(devi).zone_capacity_blocks = f2fs_kzalloc(sbi,
3376 FDEV(devi).nr_blkz * sizeof(block_t),
3377 GFP_KERNEL);
3378 if (!FDEV(devi).zone_capacity_blocks)
3379 return -ENOMEM;
3380
3381 rep_zone_arg.dev = &FDEV(devi);
3382 rep_zone_arg.zone_cap_mismatch = false;
3383
3384 ret = blkdev_report_zones(bdev, 0, BLK_ALL_ZONES, f2fs_report_zone_cb,
3385 &rep_zone_arg);
3386 if (ret < 0)
3387 return ret;
3388
3389 if (!rep_zone_arg.zone_cap_mismatch) {
3390 kfree(FDEV(devi).zone_capacity_blocks);
3391 FDEV(devi).zone_capacity_blocks = NULL;
3392 }
3393
3394 return 0;
3395 }
3396 #endif
3397
3398 /*
3399 * Read f2fs raw super block.
3400 * Because we have two copies of super block, so read both of them
3401 * to get the first valid one. If any one of them is broken, we pass
3402 * them recovery flag back to the caller.
3403 */
read_raw_super_block(struct f2fs_sb_info * sbi,struct f2fs_super_block ** raw_super,int * valid_super_block,int * recovery)3404 static int read_raw_super_block(struct f2fs_sb_info *sbi,
3405 struct f2fs_super_block **raw_super,
3406 int *valid_super_block, int *recovery)
3407 {
3408 struct super_block *sb = sbi->sb;
3409 int block;
3410 struct buffer_head *bh;
3411 struct f2fs_super_block *super;
3412 int err = 0;
3413
3414 super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL);
3415 if (!super)
3416 return -ENOMEM;
3417
3418 for (block = 0; block < 2; block++) {
3419 bh = sb_bread(sb, block);
3420 if (!bh) {
3421 f2fs_err(sbi, "Unable to read %dth superblock",
3422 block + 1);
3423 err = -EIO;
3424 *recovery = 1;
3425 continue;
3426 }
3427
3428 /* sanity checking of raw super */
3429 err = sanity_check_raw_super(sbi, bh);
3430 if (err) {
3431 f2fs_err(sbi, "Can't find valid F2FS filesystem in %dth superblock",
3432 block + 1);
3433 brelse(bh);
3434 *recovery = 1;
3435 continue;
3436 }
3437
3438 if (!*raw_super) {
3439 memcpy(super, bh->b_data + F2FS_SUPER_OFFSET,
3440 sizeof(*super));
3441 *valid_super_block = block;
3442 *raw_super = super;
3443 }
3444 brelse(bh);
3445 }
3446
3447 /* No valid superblock */
3448 if (!*raw_super)
3449 kfree(super);
3450 else
3451 err = 0;
3452
3453 return err;
3454 }
3455
f2fs_commit_super(struct f2fs_sb_info * sbi,bool recover)3456 int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover)
3457 {
3458 struct buffer_head *bh;
3459 __u32 crc = 0;
3460 int err;
3461
3462 if ((recover && f2fs_readonly(sbi->sb)) ||
3463 bdev_read_only(sbi->sb->s_bdev)) {
3464 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
3465 return -EROFS;
3466 }
3467
3468 /* we should update superblock crc here */
3469 if (!recover && f2fs_sb_has_sb_chksum(sbi)) {
3470 crc = f2fs_crc32(sbi, F2FS_RAW_SUPER(sbi),
3471 offsetof(struct f2fs_super_block, crc));
3472 F2FS_RAW_SUPER(sbi)->crc = cpu_to_le32(crc);
3473 }
3474
3475 /* write back-up superblock first */
3476 bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1);
3477 if (!bh)
3478 return -EIO;
3479 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
3480 brelse(bh);
3481
3482 /* if we are in recovery path, skip writing valid superblock */
3483 if (recover || err)
3484 return err;
3485
3486 /* write current valid superblock */
3487 bh = sb_bread(sbi->sb, sbi->valid_super_block);
3488 if (!bh)
3489 return -EIO;
3490 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
3491 brelse(bh);
3492 return err;
3493 }
3494
f2fs_scan_devices(struct f2fs_sb_info * sbi)3495 static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
3496 {
3497 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
3498 unsigned int max_devices = MAX_DEVICES;
3499 int i;
3500
3501 /* Initialize single device information */
3502 if (!RDEV(0).path[0]) {
3503 if (!bdev_is_zoned(sbi->sb->s_bdev))
3504 return 0;
3505 max_devices = 1;
3506 }
3507
3508 /*
3509 * Initialize multiple devices information, or single
3510 * zoned block device information.
3511 */
3512 sbi->devs = f2fs_kzalloc(sbi,
3513 array_size(max_devices,
3514 sizeof(struct f2fs_dev_info)),
3515 GFP_KERNEL);
3516 if (!sbi->devs)
3517 return -ENOMEM;
3518
3519 for (i = 0; i < max_devices; i++) {
3520
3521 if (i > 0 && !RDEV(i).path[0])
3522 break;
3523
3524 if (max_devices == 1) {
3525 /* Single zoned block device mount */
3526 FDEV(0).bdev =
3527 blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev,
3528 sbi->sb->s_mode, sbi->sb->s_type);
3529 } else {
3530 /* Multi-device mount */
3531 memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN);
3532 FDEV(i).total_segments =
3533 le32_to_cpu(RDEV(i).total_segments);
3534 if (i == 0) {
3535 FDEV(i).start_blk = 0;
3536 FDEV(i).end_blk = FDEV(i).start_blk +
3537 (FDEV(i).total_segments <<
3538 sbi->log_blocks_per_seg) - 1 +
3539 le32_to_cpu(raw_super->segment0_blkaddr);
3540 } else {
3541 FDEV(i).start_blk = FDEV(i - 1).end_blk + 1;
3542 FDEV(i).end_blk = FDEV(i).start_blk +
3543 (FDEV(i).total_segments <<
3544 sbi->log_blocks_per_seg) - 1;
3545 }
3546 FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path,
3547 sbi->sb->s_mode, sbi->sb->s_type);
3548 }
3549 if (IS_ERR(FDEV(i).bdev))
3550 return PTR_ERR(FDEV(i).bdev);
3551
3552 /* to release errored devices */
3553 sbi->s_ndevs = i + 1;
3554
3555 #ifdef CONFIG_BLK_DEV_ZONED
3556 if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM &&
3557 !f2fs_sb_has_blkzoned(sbi)) {
3558 f2fs_err(sbi, "Zoned block device feature not enabled\n");
3559 return -EINVAL;
3560 }
3561 if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) {
3562 if (init_blkz_info(sbi, i)) {
3563 f2fs_err(sbi, "Failed to initialize F2FS blkzone information");
3564 return -EINVAL;
3565 }
3566 if (max_devices == 1)
3567 break;
3568 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)",
3569 i, FDEV(i).path,
3570 FDEV(i).total_segments,
3571 FDEV(i).start_blk, FDEV(i).end_blk,
3572 bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ?
3573 "Host-aware" : "Host-managed");
3574 continue;
3575 }
3576 #endif
3577 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x",
3578 i, FDEV(i).path,
3579 FDEV(i).total_segments,
3580 FDEV(i).start_blk, FDEV(i).end_blk);
3581 }
3582 f2fs_info(sbi,
3583 "IO Block Size: %8d KB", F2FS_IO_SIZE_KB(sbi));
3584 return 0;
3585 }
3586
f2fs_setup_casefold(struct f2fs_sb_info * sbi)3587 static int f2fs_setup_casefold(struct f2fs_sb_info *sbi)
3588 {
3589 #ifdef CONFIG_UNICODE
3590 if (f2fs_sb_has_casefold(sbi) && !sbi->sb->s_encoding) {
3591 const struct f2fs_sb_encodings *encoding_info;
3592 struct unicode_map *encoding;
3593 __u16 encoding_flags;
3594
3595 if (f2fs_sb_read_encoding(sbi->raw_super, &encoding_info,
3596 &encoding_flags)) {
3597 f2fs_err(sbi,
3598 "Encoding requested by superblock is unknown");
3599 return -EINVAL;
3600 }
3601
3602 encoding = utf8_load(encoding_info->version);
3603 if (IS_ERR(encoding)) {
3604 f2fs_err(sbi,
3605 "can't mount with superblock charset: %s-%s "
3606 "not supported by the kernel. flags: 0x%x.",
3607 encoding_info->name, encoding_info->version,
3608 encoding_flags);
3609 return PTR_ERR(encoding);
3610 }
3611 f2fs_info(sbi, "Using encoding defined by superblock: "
3612 "%s-%s with flags 0x%hx", encoding_info->name,
3613 encoding_info->version?:"\b", encoding_flags);
3614
3615 sbi->sb->s_encoding = encoding;
3616 sbi->sb->s_encoding_flags = encoding_flags;
3617 }
3618 #else
3619 if (f2fs_sb_has_casefold(sbi)) {
3620 f2fs_err(sbi, "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
3621 return -EINVAL;
3622 }
3623 #endif
3624 return 0;
3625 }
3626
f2fs_tuning_parameters(struct f2fs_sb_info * sbi)3627 static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi)
3628 {
3629 struct f2fs_sm_info *sm_i = SM_I(sbi);
3630
3631 /* adjust parameters according to the volume size */
3632 if (sm_i->main_segments <= SMALL_VOLUME_SEGMENTS) {
3633 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
3634 sm_i->dcc_info->discard_granularity = 1;
3635 sm_i->ipu_policy = 1 << F2FS_IPU_FORCE;
3636 }
3637
3638 sbi->readdir_ra = 1;
3639 }
3640
f2fs_fill_super(struct super_block * sb,void * data,int silent)3641 static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
3642 {
3643 struct f2fs_sb_info *sbi;
3644 struct f2fs_super_block *raw_super;
3645 struct inode *root;
3646 int err;
3647 bool skip_recovery = false, need_fsck = false;
3648 char *options = NULL;
3649 int recovery, i, valid_super_block;
3650 struct curseg_info *seg_i;
3651 int retry_cnt = 1;
3652
3653 try_onemore:
3654 err = -EINVAL;
3655 raw_super = NULL;
3656 valid_super_block = -1;
3657 recovery = 0;
3658
3659 /* allocate memory for f2fs-specific super block info */
3660 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL);
3661 if (!sbi)
3662 return -ENOMEM;
3663
3664 sbi->sb = sb;
3665
3666 /* Load the checksum driver */
3667 sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0);
3668 if (IS_ERR(sbi->s_chksum_driver)) {
3669 f2fs_err(sbi, "Cannot load crc32 driver.");
3670 err = PTR_ERR(sbi->s_chksum_driver);
3671 sbi->s_chksum_driver = NULL;
3672 goto free_sbi;
3673 }
3674
3675 /* set a block size */
3676 if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) {
3677 f2fs_err(sbi, "unable to set blocksize");
3678 goto free_sbi;
3679 }
3680
3681 err = read_raw_super_block(sbi, &raw_super, &valid_super_block,
3682 &recovery);
3683 if (err)
3684 goto free_sbi;
3685
3686 sb->s_fs_info = sbi;
3687 sbi->raw_super = raw_super;
3688
3689 /* precompute checksum seed for metadata */
3690 if (f2fs_sb_has_inode_chksum(sbi))
3691 sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid,
3692 sizeof(raw_super->uuid));
3693
3694 default_options(sbi);
3695 /* parse mount options */
3696 options = kstrdup((const char *)data, GFP_KERNEL);
3697 if (data && !options) {
3698 err = -ENOMEM;
3699 goto free_sb_buf;
3700 }
3701
3702 err = parse_options(sb, options, false);
3703 if (err)
3704 goto free_options;
3705
3706 sb->s_maxbytes = max_file_blocks(NULL) <<
3707 le32_to_cpu(raw_super->log_blocksize);
3708 sb->s_max_links = F2FS_LINK_MAX;
3709
3710 err = f2fs_setup_casefold(sbi);
3711 if (err)
3712 goto free_options;
3713
3714 #ifdef CONFIG_QUOTA
3715 sb->dq_op = &f2fs_quota_operations;
3716 sb->s_qcop = &f2fs_quotactl_ops;
3717 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ;
3718
3719 if (f2fs_sb_has_quota_ino(sbi)) {
3720 for (i = 0; i < MAXQUOTAS; i++) {
3721 if (f2fs_qf_ino(sbi->sb, i))
3722 sbi->nquota_files++;
3723 }
3724 }
3725 #endif
3726
3727 sb->s_op = &f2fs_sops;
3728 #ifdef CONFIG_FS_ENCRYPTION
3729 sb->s_cop = &f2fs_cryptops;
3730 #endif
3731 #ifdef CONFIG_FS_VERITY
3732 sb->s_vop = &f2fs_verityops;
3733 #endif
3734 sb->s_xattr = f2fs_xattr_handlers;
3735 sb->s_export_op = &f2fs_export_ops;
3736 sb->s_magic = F2FS_SUPER_MAGIC;
3737 sb->s_time_gran = 1;
3738 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
3739 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
3740 memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid));
3741 sb->s_iflags |= SB_I_CGROUPWB;
3742
3743 /* init f2fs-specific super block info */
3744 sbi->valid_super_block = valid_super_block;
3745 init_rwsem(&sbi->gc_lock);
3746 mutex_init(&sbi->writepages);
3747 init_rwsem(&sbi->cp_global_sem);
3748 init_rwsem(&sbi->node_write);
3749 init_rwsem(&sbi->node_change);
3750
3751 /* disallow all the data/node/meta page writes */
3752 set_sbi_flag(sbi, SBI_POR_DOING);
3753 spin_lock_init(&sbi->stat_lock);
3754
3755 /* init iostat info */
3756 spin_lock_init(&sbi->iostat_lock);
3757 sbi->iostat_enable = false;
3758 sbi->iostat_period_ms = DEFAULT_IOSTAT_PERIOD_MS;
3759
3760 for (i = 0; i < NR_PAGE_TYPE; i++) {
3761 int n = (i == META) ? 1 : NR_TEMP_TYPE;
3762 int j;
3763
3764 sbi->write_io[i] =
3765 f2fs_kmalloc(sbi,
3766 array_size(n,
3767 sizeof(struct f2fs_bio_info)),
3768 GFP_KERNEL);
3769 if (!sbi->write_io[i]) {
3770 err = -ENOMEM;
3771 goto free_bio_info;
3772 }
3773
3774 for (j = HOT; j < n; j++) {
3775 init_rwsem(&sbi->write_io[i][j].io_rwsem);
3776 sbi->write_io[i][j].sbi = sbi;
3777 sbi->write_io[i][j].bio = NULL;
3778 spin_lock_init(&sbi->write_io[i][j].io_lock);
3779 INIT_LIST_HEAD(&sbi->write_io[i][j].io_list);
3780 INIT_LIST_HEAD(&sbi->write_io[i][j].bio_list);
3781 init_rwsem(&sbi->write_io[i][j].bio_list_lock);
3782 }
3783 }
3784
3785 init_rwsem(&sbi->cp_rwsem);
3786 init_rwsem(&sbi->quota_sem);
3787 init_waitqueue_head(&sbi->cp_wait);
3788 init_sb_info(sbi);
3789
3790 err = init_percpu_info(sbi);
3791 if (err)
3792 goto free_bio_info;
3793
3794 if (F2FS_IO_ALIGNED(sbi)) {
3795 sbi->write_io_dummy =
3796 mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0);
3797 if (!sbi->write_io_dummy) {
3798 err = -ENOMEM;
3799 goto free_percpu;
3800 }
3801 }
3802
3803 /* init per sbi slab cache */
3804 err = f2fs_init_xattr_caches(sbi);
3805 if (err)
3806 goto free_io_dummy;
3807 err = f2fs_init_page_array_cache(sbi);
3808 if (err)
3809 goto free_xattr_cache;
3810
3811 /* get an inode for meta space */
3812 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi));
3813 if (IS_ERR(sbi->meta_inode)) {
3814 f2fs_err(sbi, "Failed to read F2FS meta data inode");
3815 err = PTR_ERR(sbi->meta_inode);
3816 goto free_page_array_cache;
3817 }
3818
3819 err = f2fs_get_valid_checkpoint(sbi);
3820 if (err) {
3821 f2fs_err(sbi, "Failed to get valid F2FS checkpoint");
3822 goto free_meta_inode;
3823 }
3824
3825 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_QUOTA_NEED_FSCK_FLAG))
3826 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
3827 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_DISABLED_QUICK_FLAG)) {
3828 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
3829 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL;
3830 }
3831
3832 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FSCK_FLAG))
3833 set_sbi_flag(sbi, SBI_NEED_FSCK);
3834
3835 /* Initialize device list */
3836 err = f2fs_scan_devices(sbi);
3837 if (err) {
3838 f2fs_err(sbi, "Failed to find devices");
3839 goto free_devices;
3840 }
3841
3842 err = f2fs_init_post_read_wq(sbi);
3843 if (err) {
3844 f2fs_err(sbi, "Failed to initialize post read workqueue");
3845 goto free_devices;
3846 }
3847
3848 sbi->total_valid_node_count =
3849 le32_to_cpu(sbi->ckpt->valid_node_count);
3850 percpu_counter_set(&sbi->total_valid_inode_count,
3851 le32_to_cpu(sbi->ckpt->valid_inode_count));
3852 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count);
3853 sbi->total_valid_block_count =
3854 le64_to_cpu(sbi->ckpt->valid_block_count);
3855 sbi->last_valid_block_count = sbi->total_valid_block_count;
3856 sbi->reserved_blocks = 0;
3857 sbi->current_reserved_blocks = 0;
3858 limit_reserve_root(sbi);
3859 adjust_unusable_cap_perc(sbi);
3860
3861 for (i = 0; i < NR_INODE_TYPE; i++) {
3862 INIT_LIST_HEAD(&sbi->inode_list[i]);
3863 spin_lock_init(&sbi->inode_lock[i]);
3864 }
3865 mutex_init(&sbi->flush_lock);
3866
3867 f2fs_init_extent_cache_info(sbi);
3868
3869 f2fs_init_ino_entry_info(sbi);
3870
3871 f2fs_init_fsync_node_info(sbi);
3872
3873 /* setup checkpoint request control and start checkpoint issue thread */
3874 f2fs_init_ckpt_req_control(sbi);
3875 if (!f2fs_readonly(sb) && !test_opt(sbi, DISABLE_CHECKPOINT) &&
3876 test_opt(sbi, MERGE_CHECKPOINT)) {
3877 err = f2fs_start_ckpt_thread(sbi);
3878 if (err) {
3879 f2fs_err(sbi,
3880 "Failed to start F2FS issue_checkpoint_thread (%d)",
3881 err);
3882 goto stop_ckpt_thread;
3883 }
3884 }
3885
3886 /* setup f2fs internal modules */
3887 err = f2fs_build_segment_manager(sbi);
3888 if (err) {
3889 f2fs_err(sbi, "Failed to initialize F2FS segment manager (%d)",
3890 err);
3891 goto free_sm;
3892 }
3893 err = f2fs_build_node_manager(sbi);
3894 if (err) {
3895 f2fs_err(sbi, "Failed to initialize F2FS node manager (%d)",
3896 err);
3897 goto free_nm;
3898 }
3899
3900 /* For write statistics */
3901 sbi->sectors_written_start = f2fs_get_sectors_written(sbi);
3902
3903 /* Read accumulated write IO statistics if exists */
3904 seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
3905 if (__exist_node_summaries(sbi))
3906 sbi->kbytes_written =
3907 le64_to_cpu(seg_i->journal->info.kbytes_written);
3908
3909 f2fs_build_gc_manager(sbi);
3910
3911 err = f2fs_build_stats(sbi);
3912 if (err)
3913 goto free_nm;
3914
3915 /* get an inode for node space */
3916 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi));
3917 if (IS_ERR(sbi->node_inode)) {
3918 f2fs_err(sbi, "Failed to read node inode");
3919 err = PTR_ERR(sbi->node_inode);
3920 goto free_stats;
3921 }
3922
3923 /* read root inode and dentry */
3924 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi));
3925 if (IS_ERR(root)) {
3926 f2fs_err(sbi, "Failed to read root inode");
3927 err = PTR_ERR(root);
3928 goto free_node_inode;
3929 }
3930 if (!S_ISDIR(root->i_mode) || !root->i_blocks ||
3931 !root->i_size || !root->i_nlink) {
3932 iput(root);
3933 err = -EINVAL;
3934 goto free_node_inode;
3935 }
3936
3937 sb->s_root = d_make_root(root); /* allocate root dentry */
3938 if (!sb->s_root) {
3939 err = -ENOMEM;
3940 goto free_node_inode;
3941 }
3942
3943 err = f2fs_register_sysfs(sbi);
3944 if (err)
3945 goto free_root_inode;
3946
3947 #ifdef CONFIG_QUOTA
3948 /* Enable quota usage during mount */
3949 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) {
3950 err = f2fs_enable_quotas(sb);
3951 if (err)
3952 f2fs_err(sbi, "Cannot turn on quotas: error %d", err);
3953 }
3954 #endif
3955 /* if there are any orphan inodes, free them */
3956 err = f2fs_recover_orphan_inodes(sbi);
3957 if (err)
3958 goto free_meta;
3959
3960 if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)))
3961 goto reset_checkpoint;
3962
3963 /* recover fsynced data */
3964 if (!test_opt(sbi, DISABLE_ROLL_FORWARD) &&
3965 !test_opt(sbi, NORECOVERY)) {
3966 /*
3967 * mount should be failed, when device has readonly mode, and
3968 * previous checkpoint was not done by clean system shutdown.
3969 */
3970 if (f2fs_hw_is_readonly(sbi)) {
3971 if (!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
3972 err = f2fs_recover_fsync_data(sbi, true);
3973 if (err > 0) {
3974 err = -EROFS;
3975 f2fs_err(sbi, "Need to recover fsync data, but "
3976 "write access unavailable, please try "
3977 "mount w/ disable_roll_forward or norecovery");
3978 }
3979 if (err < 0)
3980 goto free_meta;
3981 }
3982 f2fs_info(sbi, "write access unavailable, skipping recovery");
3983 goto reset_checkpoint;
3984 }
3985
3986 if (need_fsck)
3987 set_sbi_flag(sbi, SBI_NEED_FSCK);
3988
3989 if (skip_recovery)
3990 goto reset_checkpoint;
3991
3992 err = f2fs_recover_fsync_data(sbi, false);
3993 if (err < 0) {
3994 if (err != -ENOMEM)
3995 skip_recovery = true;
3996 need_fsck = true;
3997 f2fs_err(sbi, "Cannot recover all fsync data errno=%d",
3998 err);
3999 goto free_meta;
4000 }
4001 } else {
4002 err = f2fs_recover_fsync_data(sbi, true);
4003
4004 if (!f2fs_readonly(sb) && err > 0) {
4005 err = -EINVAL;
4006 f2fs_err(sbi, "Need to recover fsync data");
4007 goto free_meta;
4008 }
4009 }
4010
4011 /*
4012 * If the f2fs is not readonly and fsync data recovery succeeds,
4013 * check zoned block devices' write pointer consistency.
4014 */
4015 if (!err && !f2fs_readonly(sb) && f2fs_sb_has_blkzoned(sbi)) {
4016 err = f2fs_check_write_pointer(sbi);
4017 if (err)
4018 goto free_meta;
4019 }
4020
4021 reset_checkpoint:
4022 f2fs_init_inmem_curseg(sbi);
4023
4024 /* f2fs_recover_fsync_data() cleared this already */
4025 clear_sbi_flag(sbi, SBI_POR_DOING);
4026
4027 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
4028 err = f2fs_disable_checkpoint(sbi);
4029 if (err)
4030 goto sync_free_meta;
4031 } else if (is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)) {
4032 f2fs_enable_checkpoint(sbi);
4033 }
4034
4035 /*
4036 * If filesystem is not mounted as read-only then
4037 * do start the gc_thread.
4038 */
4039 if ((F2FS_OPTION(sbi).bggc_mode != BGGC_MODE_OFF ||
4040 test_opt(sbi, GC_MERGE)) && !f2fs_readonly(sb)) {
4041 /* After POR, we can run background GC thread.*/
4042 err = f2fs_start_gc_thread(sbi);
4043 if (err)
4044 goto sync_free_meta;
4045 }
4046 kvfree(options);
4047
4048 /* recover broken superblock */
4049 if (recovery) {
4050 err = f2fs_commit_super(sbi, true);
4051 f2fs_info(sbi, "Try to recover %dth superblock, ret: %d",
4052 sbi->valid_super_block ? 1 : 2, err);
4053 }
4054
4055 f2fs_join_shrinker(sbi);
4056
4057 f2fs_tuning_parameters(sbi);
4058
4059 f2fs_notice(sbi, "Mounted with checkpoint version = %llx",
4060 cur_cp_version(F2FS_CKPT(sbi)));
4061 f2fs_update_time(sbi, CP_TIME);
4062 f2fs_update_time(sbi, REQ_TIME);
4063 clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
4064 return 0;
4065
4066 sync_free_meta:
4067 /* safe to flush all the data */
4068 sync_filesystem(sbi->sb);
4069 retry_cnt = 0;
4070
4071 free_meta:
4072 #ifdef CONFIG_QUOTA
4073 f2fs_truncate_quota_inode_pages(sb);
4074 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb))
4075 f2fs_quota_off_umount(sbi->sb);
4076 #endif
4077 /*
4078 * Some dirty meta pages can be produced by f2fs_recover_orphan_inodes()
4079 * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg()
4080 * followed by f2fs_write_checkpoint() through f2fs_write_node_pages(), which
4081 * falls into an infinite loop in f2fs_sync_meta_pages().
4082 */
4083 truncate_inode_pages_final(META_MAPPING(sbi));
4084 /* evict some inodes being cached by GC */
4085 evict_inodes(sb);
4086 f2fs_unregister_sysfs(sbi);
4087 free_root_inode:
4088 dput(sb->s_root);
4089 sb->s_root = NULL;
4090 free_node_inode:
4091 f2fs_release_ino_entry(sbi, true);
4092 truncate_inode_pages_final(NODE_MAPPING(sbi));
4093 iput(sbi->node_inode);
4094 sbi->node_inode = NULL;
4095 free_stats:
4096 f2fs_destroy_stats(sbi);
4097 free_nm:
4098 f2fs_destroy_node_manager(sbi);
4099 free_sm:
4100 f2fs_destroy_segment_manager(sbi);
4101 f2fs_destroy_post_read_wq(sbi);
4102 stop_ckpt_thread:
4103 f2fs_stop_ckpt_thread(sbi);
4104 free_devices:
4105 destroy_device_list(sbi);
4106 kvfree(sbi->ckpt);
4107 free_meta_inode:
4108 make_bad_inode(sbi->meta_inode);
4109 iput(sbi->meta_inode);
4110 sbi->meta_inode = NULL;
4111 free_page_array_cache:
4112 f2fs_destroy_page_array_cache(sbi);
4113 free_xattr_cache:
4114 f2fs_destroy_xattr_caches(sbi);
4115 free_io_dummy:
4116 mempool_destroy(sbi->write_io_dummy);
4117 free_percpu:
4118 destroy_percpu_info(sbi);
4119 free_bio_info:
4120 for (i = 0; i < NR_PAGE_TYPE; i++)
4121 kvfree(sbi->write_io[i]);
4122
4123 #ifdef CONFIG_UNICODE
4124 utf8_unload(sb->s_encoding);
4125 sb->s_encoding = NULL;
4126 #endif
4127 free_options:
4128 #ifdef CONFIG_QUOTA
4129 for (i = 0; i < MAXQUOTAS; i++)
4130 kfree(F2FS_OPTION(sbi).s_qf_names[i]);
4131 #endif
4132 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy);
4133 kvfree(options);
4134 free_sb_buf:
4135 kfree(raw_super);
4136 free_sbi:
4137 if (sbi->s_chksum_driver)
4138 crypto_free_shash(sbi->s_chksum_driver);
4139 kfree(sbi);
4140
4141 /* give only one another chance */
4142 if (retry_cnt > 0 && skip_recovery) {
4143 retry_cnt--;
4144 shrink_dcache_sb(sb);
4145 goto try_onemore;
4146 }
4147 return err;
4148 }
4149
f2fs_mount(struct file_system_type * fs_type,int flags,const char * dev_name,void * data)4150 static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags,
4151 const char *dev_name, void *data)
4152 {
4153 return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super);
4154 }
4155
kill_f2fs_super(struct super_block * sb)4156 static void kill_f2fs_super(struct super_block *sb)
4157 {
4158 if (sb->s_root) {
4159 struct f2fs_sb_info *sbi = F2FS_SB(sb);
4160
4161 set_sbi_flag(sbi, SBI_IS_CLOSE);
4162 f2fs_stop_gc_thread(sbi);
4163 f2fs_stop_discard_thread(sbi);
4164
4165 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
4166 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
4167 struct cp_control cpc = {
4168 .reason = CP_UMOUNT,
4169 };
4170 f2fs_write_checkpoint(sbi, &cpc);
4171 }
4172
4173 if (is_sbi_flag_set(sbi, SBI_IS_RECOVERED) && f2fs_readonly(sb))
4174 sb->s_flags &= ~SB_RDONLY;
4175 }
4176 kill_block_super(sb);
4177 }
4178
4179 static struct file_system_type f2fs_fs_type = {
4180 .owner = THIS_MODULE,
4181 .name = "f2fs",
4182 .mount = f2fs_mount,
4183 .kill_sb = kill_f2fs_super,
4184 .fs_flags = FS_REQUIRES_DEV,
4185 };
4186 MODULE_ALIAS_FS("f2fs");
4187
init_inodecache(void)4188 static int __init init_inodecache(void)
4189 {
4190 f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache",
4191 sizeof(struct f2fs_inode_info), 0,
4192 SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL);
4193 if (!f2fs_inode_cachep)
4194 return -ENOMEM;
4195 return 0;
4196 }
4197
destroy_inodecache(void)4198 static void destroy_inodecache(void)
4199 {
4200 /*
4201 * Make sure all delayed rcu free inodes are flushed before we
4202 * destroy cache.
4203 */
4204 rcu_barrier();
4205 kmem_cache_destroy(f2fs_inode_cachep);
4206 }
4207
init_f2fs_fs(void)4208 static int __init init_f2fs_fs(void)
4209 {
4210 int err;
4211
4212 if (PAGE_SIZE != F2FS_BLKSIZE) {
4213 printk("F2FS not supported on PAGE_SIZE(%lu) != %d\n",
4214 PAGE_SIZE, F2FS_BLKSIZE);
4215 return -EINVAL;
4216 }
4217
4218 err = init_inodecache();
4219 if (err)
4220 goto fail;
4221 err = f2fs_create_node_manager_caches();
4222 if (err)
4223 goto free_inodecache;
4224 err = f2fs_create_segment_manager_caches();
4225 if (err)
4226 goto free_node_manager_caches;
4227 err = f2fs_create_checkpoint_caches();
4228 if (err)
4229 goto free_segment_manager_caches;
4230 err = f2fs_create_extent_cache();
4231 if (err)
4232 goto free_checkpoint_caches;
4233 err = f2fs_create_garbage_collection_cache();
4234 if (err)
4235 goto free_extent_cache;
4236 err = f2fs_init_sysfs();
4237 if (err)
4238 goto free_garbage_collection_cache;
4239 err = register_shrinker(&f2fs_shrinker_info);
4240 if (err)
4241 goto free_sysfs;
4242 err = register_filesystem(&f2fs_fs_type);
4243 if (err)
4244 goto free_shrinker;
4245 f2fs_create_root_stats();
4246 err = f2fs_init_post_read_processing();
4247 if (err)
4248 goto free_root_stats;
4249 err = f2fs_init_bio_entry_cache();
4250 if (err)
4251 goto free_post_read;
4252 err = f2fs_init_bioset();
4253 if (err)
4254 goto free_bio_enrty_cache;
4255 err = f2fs_init_compress_mempool();
4256 if (err)
4257 goto free_bioset;
4258 err = f2fs_init_compress_cache();
4259 if (err)
4260 goto free_compress_mempool;
4261 return 0;
4262 free_compress_mempool:
4263 f2fs_destroy_compress_mempool();
4264 free_bioset:
4265 f2fs_destroy_bioset();
4266 free_bio_enrty_cache:
4267 f2fs_destroy_bio_entry_cache();
4268 free_post_read:
4269 f2fs_destroy_post_read_processing();
4270 free_root_stats:
4271 f2fs_destroy_root_stats();
4272 unregister_filesystem(&f2fs_fs_type);
4273 free_shrinker:
4274 unregister_shrinker(&f2fs_shrinker_info);
4275 free_sysfs:
4276 f2fs_exit_sysfs();
4277 free_garbage_collection_cache:
4278 f2fs_destroy_garbage_collection_cache();
4279 free_extent_cache:
4280 f2fs_destroy_extent_cache();
4281 free_checkpoint_caches:
4282 f2fs_destroy_checkpoint_caches();
4283 free_segment_manager_caches:
4284 f2fs_destroy_segment_manager_caches();
4285 free_node_manager_caches:
4286 f2fs_destroy_node_manager_caches();
4287 free_inodecache:
4288 destroy_inodecache();
4289 fail:
4290 return err;
4291 }
4292
exit_f2fs_fs(void)4293 static void __exit exit_f2fs_fs(void)
4294 {
4295 f2fs_destroy_compress_cache();
4296 f2fs_destroy_compress_mempool();
4297 f2fs_destroy_bioset();
4298 f2fs_destroy_bio_entry_cache();
4299 f2fs_destroy_post_read_processing();
4300 f2fs_destroy_root_stats();
4301 unregister_filesystem(&f2fs_fs_type);
4302 unregister_shrinker(&f2fs_shrinker_info);
4303 f2fs_exit_sysfs();
4304 f2fs_destroy_garbage_collection_cache();
4305 f2fs_destroy_extent_cache();
4306 f2fs_destroy_checkpoint_caches();
4307 f2fs_destroy_segment_manager_caches();
4308 f2fs_destroy_node_manager_caches();
4309 destroy_inodecache();
4310 }
4311
4312 module_init(init_f2fs_fs)
4313 module_exit(exit_f2fs_fs)
4314
4315 MODULE_AUTHOR("Samsung Electronics's Praesto Team");
4316 MODULE_DESCRIPTION("Flash Friendly File System");
4317 MODULE_LICENSE("GPL");
4318
4319