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 #include "iostat.h"
37
38 #define CREATE_TRACE_POINTS
39 #include <trace/events/f2fs.h>
40
41 static struct kmem_cache *f2fs_inode_cachep;
42
43 #ifdef CONFIG_F2FS_FAULT_INJECTION
44
45 const char *f2fs_fault_name[FAULT_MAX] = {
46 [FAULT_KMALLOC] = "kmalloc",
47 [FAULT_KVMALLOC] = "kvmalloc",
48 [FAULT_PAGE_ALLOC] = "page alloc",
49 [FAULT_PAGE_GET] = "page get",
50 [FAULT_ALLOC_NID] = "alloc nid",
51 [FAULT_ORPHAN] = "orphan",
52 [FAULT_BLOCK] = "no more block",
53 [FAULT_DIR_DEPTH] = "too big dir depth",
54 [FAULT_EVICT_INODE] = "evict_inode fail",
55 [FAULT_TRUNCATE] = "truncate fail",
56 [FAULT_READ_IO] = "read IO error",
57 [FAULT_CHECKPOINT] = "checkpoint error",
58 [FAULT_DISCARD] = "discard error",
59 [FAULT_WRITE_IO] = "write IO error",
60 [FAULT_SLAB_ALLOC] = "slab alloc",
61 [FAULT_DQUOT_INIT] = "dquot initialize",
62 [FAULT_LOCK_OP] = "lock_op",
63 };
64
f2fs_build_fault_attr(struct f2fs_sb_info * sbi,unsigned int rate,unsigned int type)65 void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate,
66 unsigned int type)
67 {
68 struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info;
69
70 if (rate) {
71 atomic_set(&ffi->inject_ops, 0);
72 ffi->inject_rate = rate;
73 }
74
75 if (type)
76 ffi->inject_type = type;
77
78 if (!rate && !type)
79 memset(ffi, 0, sizeof(struct f2fs_fault_info));
80 }
81 #endif
82
83 /* f2fs-wide shrinker description */
84 static struct shrinker f2fs_shrinker_info = {
85 .scan_objects = f2fs_shrink_scan,
86 .count_objects = f2fs_shrink_count,
87 .seeks = DEFAULT_SEEKS,
88 };
89
90 enum {
91 Opt_gc_background,
92 Opt_disable_roll_forward,
93 Opt_norecovery,
94 Opt_discard,
95 Opt_nodiscard,
96 Opt_noheap,
97 Opt_heap,
98 Opt_user_xattr,
99 Opt_nouser_xattr,
100 Opt_acl,
101 Opt_noacl,
102 Opt_active_logs,
103 Opt_disable_ext_identify,
104 Opt_inline_xattr,
105 Opt_noinline_xattr,
106 Opt_inline_xattr_size,
107 Opt_inline_data,
108 Opt_inline_dentry,
109 Opt_noinline_dentry,
110 Opt_flush_merge,
111 Opt_noflush_merge,
112 Opt_nobarrier,
113 Opt_fastboot,
114 Opt_extent_cache,
115 Opt_noextent_cache,
116 Opt_noinline_data,
117 Opt_data_flush,
118 Opt_reserve_root,
119 Opt_resgid,
120 Opt_resuid,
121 Opt_mode,
122 Opt_io_size_bits,
123 Opt_fault_injection,
124 Opt_fault_type,
125 Opt_lazytime,
126 Opt_nolazytime,
127 Opt_quota,
128 Opt_noquota,
129 Opt_usrquota,
130 Opt_grpquota,
131 Opt_prjquota,
132 Opt_usrjquota,
133 Opt_grpjquota,
134 Opt_prjjquota,
135 Opt_offusrjquota,
136 Opt_offgrpjquota,
137 Opt_offprjjquota,
138 Opt_jqfmt_vfsold,
139 Opt_jqfmt_vfsv0,
140 Opt_jqfmt_vfsv1,
141 Opt_whint,
142 Opt_alloc,
143 Opt_fsync,
144 Opt_test_dummy_encryption,
145 Opt_inlinecrypt,
146 Opt_checkpoint_disable,
147 Opt_checkpoint_disable_cap,
148 Opt_checkpoint_disable_cap_perc,
149 Opt_checkpoint_enable,
150 Opt_checkpoint_merge,
151 Opt_nocheckpoint_merge,
152 Opt_compress_algorithm,
153 Opt_compress_log_size,
154 Opt_compress_extension,
155 Opt_nocompress_extension,
156 Opt_compress_chksum,
157 Opt_compress_mode,
158 Opt_compress_cache,
159 Opt_atgc,
160 Opt_gc_merge,
161 Opt_nogc_merge,
162 Opt_discard_unit,
163 Opt_memory_mode,
164 Opt_err,
165 };
166
167 static match_table_t f2fs_tokens = {
168 {Opt_gc_background, "background_gc=%s"},
169 {Opt_disable_roll_forward, "disable_roll_forward"},
170 {Opt_norecovery, "norecovery"},
171 {Opt_discard, "discard"},
172 {Opt_nodiscard, "nodiscard"},
173 {Opt_noheap, "no_heap"},
174 {Opt_heap, "heap"},
175 {Opt_user_xattr, "user_xattr"},
176 {Opt_nouser_xattr, "nouser_xattr"},
177 {Opt_acl, "acl"},
178 {Opt_noacl, "noacl"},
179 {Opt_active_logs, "active_logs=%u"},
180 {Opt_disable_ext_identify, "disable_ext_identify"},
181 {Opt_inline_xattr, "inline_xattr"},
182 {Opt_noinline_xattr, "noinline_xattr"},
183 {Opt_inline_xattr_size, "inline_xattr_size=%u"},
184 {Opt_inline_data, "inline_data"},
185 {Opt_inline_dentry, "inline_dentry"},
186 {Opt_noinline_dentry, "noinline_dentry"},
187 {Opt_flush_merge, "flush_merge"},
188 {Opt_noflush_merge, "noflush_merge"},
189 {Opt_nobarrier, "nobarrier"},
190 {Opt_fastboot, "fastboot"},
191 {Opt_extent_cache, "extent_cache"},
192 {Opt_noextent_cache, "noextent_cache"},
193 {Opt_noinline_data, "noinline_data"},
194 {Opt_data_flush, "data_flush"},
195 {Opt_reserve_root, "reserve_root=%u"},
196 {Opt_resgid, "resgid=%u"},
197 {Opt_resuid, "resuid=%u"},
198 {Opt_mode, "mode=%s"},
199 {Opt_io_size_bits, "io_bits=%u"},
200 {Opt_fault_injection, "fault_injection=%u"},
201 {Opt_fault_type, "fault_type=%u"},
202 {Opt_lazytime, "lazytime"},
203 {Opt_nolazytime, "nolazytime"},
204 {Opt_quota, "quota"},
205 {Opt_noquota, "noquota"},
206 {Opt_usrquota, "usrquota"},
207 {Opt_grpquota, "grpquota"},
208 {Opt_prjquota, "prjquota"},
209 {Opt_usrjquota, "usrjquota=%s"},
210 {Opt_grpjquota, "grpjquota=%s"},
211 {Opt_prjjquota, "prjjquota=%s"},
212 {Opt_offusrjquota, "usrjquota="},
213 {Opt_offgrpjquota, "grpjquota="},
214 {Opt_offprjjquota, "prjjquota="},
215 {Opt_jqfmt_vfsold, "jqfmt=vfsold"},
216 {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"},
217 {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"},
218 {Opt_whint, "whint_mode=%s"},
219 {Opt_alloc, "alloc_mode=%s"},
220 {Opt_fsync, "fsync_mode=%s"},
221 {Opt_test_dummy_encryption, "test_dummy_encryption=%s"},
222 {Opt_test_dummy_encryption, "test_dummy_encryption"},
223 {Opt_inlinecrypt, "inlinecrypt"},
224 {Opt_checkpoint_disable, "checkpoint=disable"},
225 {Opt_checkpoint_disable_cap, "checkpoint=disable:%u"},
226 {Opt_checkpoint_disable_cap_perc, "checkpoint=disable:%u%%"},
227 {Opt_checkpoint_enable, "checkpoint=enable"},
228 {Opt_checkpoint_merge, "checkpoint_merge"},
229 {Opt_nocheckpoint_merge, "nocheckpoint_merge"},
230 {Opt_compress_algorithm, "compress_algorithm=%s"},
231 {Opt_compress_log_size, "compress_log_size=%u"},
232 {Opt_compress_extension, "compress_extension=%s"},
233 {Opt_nocompress_extension, "nocompress_extension=%s"},
234 {Opt_compress_chksum, "compress_chksum"},
235 {Opt_compress_mode, "compress_mode=%s"},
236 {Opt_compress_cache, "compress_cache"},
237 {Opt_atgc, "atgc"},
238 {Opt_gc_merge, "gc_merge"},
239 {Opt_nogc_merge, "nogc_merge"},
240 {Opt_discard_unit, "discard_unit=%s"},
241 {Opt_memory_mode, "memory=%s"},
242 {Opt_err, NULL},
243 };
244
f2fs_printk(struct f2fs_sb_info * sbi,const char * fmt,...)245 void f2fs_printk(struct f2fs_sb_info *sbi, const char *fmt, ...)
246 {
247 struct va_format vaf;
248 va_list args;
249 int level;
250
251 va_start(args, fmt);
252
253 level = printk_get_level(fmt);
254 vaf.fmt = printk_skip_level(fmt);
255 vaf.va = &args;
256 printk("%c%cF2FS-fs (%s): %pV\n",
257 KERN_SOH_ASCII, level, sbi->sb->s_id, &vaf);
258
259 va_end(args);
260 }
261
262 #ifdef CONFIG_UNICODE
263 static const struct f2fs_sb_encodings {
264 __u16 magic;
265 char *name;
266 char *version;
267 } f2fs_sb_encoding_map[] = {
268 {F2FS_ENC_UTF8_12_1, "utf8", "12.1.0"},
269 };
270
f2fs_sb_read_encoding(const struct f2fs_super_block * sb,const struct f2fs_sb_encodings ** encoding,__u16 * flags)271 static int f2fs_sb_read_encoding(const struct f2fs_super_block *sb,
272 const struct f2fs_sb_encodings **encoding,
273 __u16 *flags)
274 {
275 __u16 magic = le16_to_cpu(sb->s_encoding);
276 int i;
277
278 for (i = 0; i < ARRAY_SIZE(f2fs_sb_encoding_map); i++)
279 if (magic == f2fs_sb_encoding_map[i].magic)
280 break;
281
282 if (i >= ARRAY_SIZE(f2fs_sb_encoding_map))
283 return -EINVAL;
284
285 *encoding = &f2fs_sb_encoding_map[i];
286 *flags = le16_to_cpu(sb->s_encoding_flags);
287
288 return 0;
289 }
290
291 struct kmem_cache *f2fs_cf_name_slab;
f2fs_create_casefold_cache(void)292 static int __init f2fs_create_casefold_cache(void)
293 {
294 f2fs_cf_name_slab = f2fs_kmem_cache_create("f2fs_casefolded_name",
295 F2FS_NAME_LEN);
296 if (!f2fs_cf_name_slab)
297 return -ENOMEM;
298 return 0;
299 }
300
f2fs_destroy_casefold_cache(void)301 static void f2fs_destroy_casefold_cache(void)
302 {
303 kmem_cache_destroy(f2fs_cf_name_slab);
304 }
305 #else
f2fs_create_casefold_cache(void)306 static int __init f2fs_create_casefold_cache(void) { return 0; }
f2fs_destroy_casefold_cache(void)307 static void f2fs_destroy_casefold_cache(void) { }
308 #endif
309
limit_reserve_root(struct f2fs_sb_info * sbi)310 static inline void limit_reserve_root(struct f2fs_sb_info *sbi)
311 {
312 block_t limit = min((sbi->user_block_count >> 3),
313 sbi->user_block_count - sbi->reserved_blocks);
314
315 /* limit is 12.5% */
316 if (test_opt(sbi, RESERVE_ROOT) &&
317 F2FS_OPTION(sbi).root_reserved_blocks > limit) {
318 F2FS_OPTION(sbi).root_reserved_blocks = limit;
319 f2fs_info(sbi, "Reduce reserved blocks for root = %u",
320 F2FS_OPTION(sbi).root_reserved_blocks);
321 }
322 if (!test_opt(sbi, RESERVE_ROOT) &&
323 (!uid_eq(F2FS_OPTION(sbi).s_resuid,
324 make_kuid(&init_user_ns, F2FS_DEF_RESUID)) ||
325 !gid_eq(F2FS_OPTION(sbi).s_resgid,
326 make_kgid(&init_user_ns, F2FS_DEF_RESGID))))
327 f2fs_info(sbi, "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root",
328 from_kuid_munged(&init_user_ns,
329 F2FS_OPTION(sbi).s_resuid),
330 from_kgid_munged(&init_user_ns,
331 F2FS_OPTION(sbi).s_resgid));
332 }
333
adjust_reserved_segment(struct f2fs_sb_info * sbi)334 static inline int adjust_reserved_segment(struct f2fs_sb_info *sbi)
335 {
336 unsigned int sec_blks = sbi->blocks_per_seg * sbi->segs_per_sec;
337 unsigned int avg_vblocks;
338 unsigned int wanted_reserved_segments;
339 block_t avail_user_block_count;
340
341 if (!F2FS_IO_ALIGNED(sbi))
342 return 0;
343
344 /* average valid block count in section in worst case */
345 avg_vblocks = sec_blks / F2FS_IO_SIZE(sbi);
346
347 /*
348 * we need enough free space when migrating one section in worst case
349 */
350 wanted_reserved_segments = (F2FS_IO_SIZE(sbi) / avg_vblocks) *
351 reserved_segments(sbi);
352 wanted_reserved_segments -= reserved_segments(sbi);
353
354 avail_user_block_count = sbi->user_block_count -
355 sbi->current_reserved_blocks -
356 F2FS_OPTION(sbi).root_reserved_blocks;
357
358 if (wanted_reserved_segments * sbi->blocks_per_seg >
359 avail_user_block_count) {
360 f2fs_err(sbi, "IO align feature can't grab additional reserved segment: %u, available segments: %u",
361 wanted_reserved_segments,
362 avail_user_block_count >> sbi->log_blocks_per_seg);
363 return -ENOSPC;
364 }
365
366 SM_I(sbi)->additional_reserved_segments = wanted_reserved_segments;
367
368 f2fs_info(sbi, "IO align feature needs additional reserved segment: %u",
369 wanted_reserved_segments);
370
371 return 0;
372 }
373
adjust_unusable_cap_perc(struct f2fs_sb_info * sbi)374 static inline void adjust_unusable_cap_perc(struct f2fs_sb_info *sbi)
375 {
376 if (!F2FS_OPTION(sbi).unusable_cap_perc)
377 return;
378
379 if (F2FS_OPTION(sbi).unusable_cap_perc == 100)
380 F2FS_OPTION(sbi).unusable_cap = sbi->user_block_count;
381 else
382 F2FS_OPTION(sbi).unusable_cap = (sbi->user_block_count / 100) *
383 F2FS_OPTION(sbi).unusable_cap_perc;
384
385 f2fs_info(sbi, "Adjust unusable cap for checkpoint=disable = %u / %u%%",
386 F2FS_OPTION(sbi).unusable_cap,
387 F2FS_OPTION(sbi).unusable_cap_perc);
388 }
389
init_once(void * foo)390 static void init_once(void *foo)
391 {
392 struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo;
393
394 inode_init_once(&fi->vfs_inode);
395 }
396
397 #ifdef CONFIG_QUOTA
398 static const char * const quotatypes[] = INITQFNAMES;
399 #define QTYPE2NAME(t) (quotatypes[t])
f2fs_set_qf_name(struct super_block * sb,int qtype,substring_t * args)400 static int f2fs_set_qf_name(struct super_block *sb, int qtype,
401 substring_t *args)
402 {
403 struct f2fs_sb_info *sbi = F2FS_SB(sb);
404 char *qname;
405 int ret = -EINVAL;
406
407 if (sb_any_quota_loaded(sb) && !F2FS_OPTION(sbi).s_qf_names[qtype]) {
408 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on");
409 return -EINVAL;
410 }
411 if (f2fs_sb_has_quota_ino(sbi)) {
412 f2fs_info(sbi, "QUOTA feature is enabled, so ignore qf_name");
413 return 0;
414 }
415
416 qname = match_strdup(args);
417 if (!qname) {
418 f2fs_err(sbi, "Not enough memory for storing quotafile name");
419 return -ENOMEM;
420 }
421 if (F2FS_OPTION(sbi).s_qf_names[qtype]) {
422 if (strcmp(F2FS_OPTION(sbi).s_qf_names[qtype], qname) == 0)
423 ret = 0;
424 else
425 f2fs_err(sbi, "%s quota file already specified",
426 QTYPE2NAME(qtype));
427 goto errout;
428 }
429 if (strchr(qname, '/')) {
430 f2fs_err(sbi, "quotafile must be on filesystem root");
431 goto errout;
432 }
433 F2FS_OPTION(sbi).s_qf_names[qtype] = qname;
434 set_opt(sbi, QUOTA);
435 return 0;
436 errout:
437 kfree(qname);
438 return ret;
439 }
440
f2fs_clear_qf_name(struct super_block * sb,int qtype)441 static int f2fs_clear_qf_name(struct super_block *sb, int qtype)
442 {
443 struct f2fs_sb_info *sbi = F2FS_SB(sb);
444
445 if (sb_any_quota_loaded(sb) && F2FS_OPTION(sbi).s_qf_names[qtype]) {
446 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on");
447 return -EINVAL;
448 }
449 kfree(F2FS_OPTION(sbi).s_qf_names[qtype]);
450 F2FS_OPTION(sbi).s_qf_names[qtype] = NULL;
451 return 0;
452 }
453
f2fs_check_quota_options(struct f2fs_sb_info * sbi)454 static int f2fs_check_quota_options(struct f2fs_sb_info *sbi)
455 {
456 /*
457 * We do the test below only for project quotas. 'usrquota' and
458 * 'grpquota' mount options are allowed even without quota feature
459 * to support legacy quotas in quota files.
460 */
461 if (test_opt(sbi, PRJQUOTA) && !f2fs_sb_has_project_quota(sbi)) {
462 f2fs_err(sbi, "Project quota feature not enabled. Cannot enable project quota enforcement.");
463 return -1;
464 }
465 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] ||
466 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] ||
467 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) {
468 if (test_opt(sbi, USRQUOTA) &&
469 F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
470 clear_opt(sbi, USRQUOTA);
471
472 if (test_opt(sbi, GRPQUOTA) &&
473 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
474 clear_opt(sbi, GRPQUOTA);
475
476 if (test_opt(sbi, PRJQUOTA) &&
477 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
478 clear_opt(sbi, PRJQUOTA);
479
480 if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) ||
481 test_opt(sbi, PRJQUOTA)) {
482 f2fs_err(sbi, "old and new quota format mixing");
483 return -1;
484 }
485
486 if (!F2FS_OPTION(sbi).s_jquota_fmt) {
487 f2fs_err(sbi, "journaled quota format not specified");
488 return -1;
489 }
490 }
491
492 if (f2fs_sb_has_quota_ino(sbi) && F2FS_OPTION(sbi).s_jquota_fmt) {
493 f2fs_info(sbi, "QUOTA feature is enabled, so ignore jquota_fmt");
494 F2FS_OPTION(sbi).s_jquota_fmt = 0;
495 }
496 return 0;
497 }
498 #endif
499
f2fs_set_test_dummy_encryption(struct super_block * sb,const char * opt,const substring_t * arg,bool is_remount)500 static int f2fs_set_test_dummy_encryption(struct super_block *sb,
501 const char *opt,
502 const substring_t *arg,
503 bool is_remount)
504 {
505 struct f2fs_sb_info *sbi = F2FS_SB(sb);
506 #ifdef CONFIG_FS_ENCRYPTION
507 int err;
508
509 if (!f2fs_sb_has_encrypt(sbi)) {
510 f2fs_err(sbi, "Encrypt feature is off");
511 return -EINVAL;
512 }
513
514 /*
515 * This mount option is just for testing, and it's not worthwhile to
516 * implement the extra complexity (e.g. RCU protection) that would be
517 * needed to allow it to be set or changed during remount. We do allow
518 * it to be specified during remount, but only if there is no change.
519 */
520 if (is_remount && !F2FS_OPTION(sbi).dummy_enc_policy.policy) {
521 f2fs_warn(sbi, "Can't set test_dummy_encryption on remount");
522 return -EINVAL;
523 }
524 err = fscrypt_set_test_dummy_encryption(
525 sb, arg->from, &F2FS_OPTION(sbi).dummy_enc_policy);
526 if (err) {
527 if (err == -EEXIST)
528 f2fs_warn(sbi,
529 "Can't change test_dummy_encryption on remount");
530 else if (err == -EINVAL)
531 f2fs_warn(sbi, "Value of option \"%s\" is unrecognized",
532 opt);
533 else
534 f2fs_warn(sbi, "Error processing option \"%s\" [%d]",
535 opt, err);
536 return -EINVAL;
537 }
538 f2fs_warn(sbi, "Test dummy encryption mode enabled");
539 #else
540 f2fs_warn(sbi, "Test dummy encryption mount option ignored");
541 #endif
542 return 0;
543 }
544
545 #ifdef CONFIG_F2FS_FS_COMPRESSION
is_compress_extension_exist(struct f2fs_sb_info * sbi,const char * new_ext,bool is_ext)546 static bool is_compress_extension_exist(struct f2fs_sb_info *sbi,
547 const char *new_ext, bool is_ext)
548 {
549 unsigned char (*ext)[F2FS_EXTENSION_LEN];
550 int ext_cnt;
551 int i;
552
553 if (is_ext) {
554 ext = F2FS_OPTION(sbi).extensions;
555 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
556 } else {
557 ext = F2FS_OPTION(sbi).noextensions;
558 ext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
559 }
560
561 for (i = 0; i < ext_cnt; i++) {
562 if (!strcasecmp(new_ext, ext[i]))
563 return true;
564 }
565
566 return false;
567 }
568
569 /*
570 * 1. The same extension name cannot not appear in both compress and non-compress extension
571 * at the same time.
572 * 2. If the compress extension specifies all files, the types specified by the non-compress
573 * extension will be treated as special cases and will not be compressed.
574 * 3. Don't allow the non-compress extension specifies all files.
575 */
f2fs_test_compress_extension(struct f2fs_sb_info * sbi)576 static int f2fs_test_compress_extension(struct f2fs_sb_info *sbi)
577 {
578 unsigned char (*ext)[F2FS_EXTENSION_LEN];
579 unsigned char (*noext)[F2FS_EXTENSION_LEN];
580 int ext_cnt, noext_cnt, index = 0, no_index = 0;
581
582 ext = F2FS_OPTION(sbi).extensions;
583 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
584 noext = F2FS_OPTION(sbi).noextensions;
585 noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
586
587 if (!noext_cnt)
588 return 0;
589
590 for (no_index = 0; no_index < noext_cnt; no_index++) {
591 if (!strcasecmp("*", noext[no_index])) {
592 f2fs_info(sbi, "Don't allow the nocompress extension specifies all files");
593 return -EINVAL;
594 }
595 for (index = 0; index < ext_cnt; index++) {
596 if (!strcasecmp(ext[index], noext[no_index])) {
597 f2fs_info(sbi, "Don't allow the same extension %s appear in both compress and nocompress extension",
598 ext[index]);
599 return -EINVAL;
600 }
601 }
602 }
603 return 0;
604 }
605
606 #ifdef CONFIG_F2FS_FS_LZ4
f2fs_set_lz4hc_level(struct f2fs_sb_info * sbi,const char * str)607 static int f2fs_set_lz4hc_level(struct f2fs_sb_info *sbi, const char *str)
608 {
609 #ifdef CONFIG_F2FS_FS_LZ4HC
610 unsigned int level;
611 #endif
612
613 if (strlen(str) == 3) {
614 F2FS_OPTION(sbi).compress_level = 0;
615 return 0;
616 }
617
618 #ifdef CONFIG_F2FS_FS_LZ4HC
619 str += 3;
620
621 if (str[0] != ':') {
622 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>");
623 return -EINVAL;
624 }
625 if (kstrtouint(str + 1, 10, &level))
626 return -EINVAL;
627
628 if (level < LZ4HC_MIN_CLEVEL || level > LZ4HC_MAX_CLEVEL) {
629 f2fs_info(sbi, "invalid lz4hc compress level: %d", level);
630 return -EINVAL;
631 }
632
633 F2FS_OPTION(sbi).compress_level = level;
634 return 0;
635 #else
636 f2fs_info(sbi, "kernel doesn't support lz4hc compression");
637 return -EINVAL;
638 #endif
639 }
640 #endif
641
642 #ifdef CONFIG_F2FS_FS_ZSTD
f2fs_set_zstd_level(struct f2fs_sb_info * sbi,const char * str)643 static int f2fs_set_zstd_level(struct f2fs_sb_info *sbi, const char *str)
644 {
645 unsigned int level;
646 int len = 4;
647
648 if (strlen(str) == len) {
649 F2FS_OPTION(sbi).compress_level = 0;
650 return 0;
651 }
652
653 str += len;
654
655 if (str[0] != ':') {
656 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>");
657 return -EINVAL;
658 }
659 if (kstrtouint(str + 1, 10, &level))
660 return -EINVAL;
661
662 if (!level || level > ZSTD_maxCLevel()) {
663 f2fs_info(sbi, "invalid zstd compress level: %d", level);
664 return -EINVAL;
665 }
666
667 F2FS_OPTION(sbi).compress_level = level;
668 return 0;
669 }
670 #endif
671 #endif
672
parse_options(struct super_block * sb,char * options,bool is_remount)673 static int parse_options(struct super_block *sb, char *options, bool is_remount)
674 {
675 struct f2fs_sb_info *sbi = F2FS_SB(sb);
676 substring_t args[MAX_OPT_ARGS];
677 #ifdef CONFIG_F2FS_FS_COMPRESSION
678 unsigned char (*ext)[F2FS_EXTENSION_LEN];
679 unsigned char (*noext)[F2FS_EXTENSION_LEN];
680 int ext_cnt, noext_cnt;
681 #endif
682 char *p, *name;
683 int arg = 0;
684 kuid_t uid;
685 kgid_t gid;
686 int ret;
687
688 if (!options)
689 goto default_check;
690
691 while ((p = strsep(&options, ",")) != NULL) {
692 int token;
693
694 if (!*p)
695 continue;
696 /*
697 * Initialize args struct so we know whether arg was
698 * found; some options take optional arguments.
699 */
700 args[0].to = args[0].from = NULL;
701 token = match_token(p, f2fs_tokens, args);
702
703 switch (token) {
704 case Opt_gc_background:
705 name = match_strdup(&args[0]);
706
707 if (!name)
708 return -ENOMEM;
709 if (!strcmp(name, "on")) {
710 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON;
711 } else if (!strcmp(name, "off")) {
712 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_OFF;
713 } else if (!strcmp(name, "sync")) {
714 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_SYNC;
715 } else {
716 kfree(name);
717 return -EINVAL;
718 }
719 kfree(name);
720 break;
721 case Opt_disable_roll_forward:
722 set_opt(sbi, DISABLE_ROLL_FORWARD);
723 break;
724 case Opt_norecovery:
725 /* this option mounts f2fs with ro */
726 set_opt(sbi, NORECOVERY);
727 if (!f2fs_readonly(sb))
728 return -EINVAL;
729 break;
730 case Opt_discard:
731 if (!f2fs_hw_support_discard(sbi)) {
732 f2fs_warn(sbi, "device does not support discard");
733 break;
734 }
735 set_opt(sbi, DISCARD);
736 break;
737 case Opt_nodiscard:
738 if (f2fs_hw_should_discard(sbi)) {
739 f2fs_warn(sbi, "discard is required for zoned block devices");
740 return -EINVAL;
741 }
742 clear_opt(sbi, DISCARD);
743 break;
744 case Opt_noheap:
745 set_opt(sbi, NOHEAP);
746 break;
747 case Opt_heap:
748 clear_opt(sbi, NOHEAP);
749 break;
750 #ifdef CONFIG_F2FS_FS_XATTR
751 case Opt_user_xattr:
752 set_opt(sbi, XATTR_USER);
753 break;
754 case Opt_nouser_xattr:
755 clear_opt(sbi, XATTR_USER);
756 break;
757 case Opt_inline_xattr:
758 set_opt(sbi, INLINE_XATTR);
759 break;
760 case Opt_noinline_xattr:
761 clear_opt(sbi, INLINE_XATTR);
762 break;
763 case Opt_inline_xattr_size:
764 if (args->from && match_int(args, &arg))
765 return -EINVAL;
766 set_opt(sbi, INLINE_XATTR_SIZE);
767 F2FS_OPTION(sbi).inline_xattr_size = arg;
768 break;
769 #else
770 case Opt_user_xattr:
771 f2fs_info(sbi, "user_xattr options not supported");
772 break;
773 case Opt_nouser_xattr:
774 f2fs_info(sbi, "nouser_xattr options not supported");
775 break;
776 case Opt_inline_xattr:
777 f2fs_info(sbi, "inline_xattr options not supported");
778 break;
779 case Opt_noinline_xattr:
780 f2fs_info(sbi, "noinline_xattr options not supported");
781 break;
782 #endif
783 #ifdef CONFIG_F2FS_FS_POSIX_ACL
784 case Opt_acl:
785 set_opt(sbi, POSIX_ACL);
786 break;
787 case Opt_noacl:
788 clear_opt(sbi, POSIX_ACL);
789 break;
790 #else
791 case Opt_acl:
792 f2fs_info(sbi, "acl options not supported");
793 break;
794 case Opt_noacl:
795 f2fs_info(sbi, "noacl options not supported");
796 break;
797 #endif
798 case Opt_active_logs:
799 if (args->from && match_int(args, &arg))
800 return -EINVAL;
801 if (arg != 2 && arg != 4 &&
802 arg != NR_CURSEG_PERSIST_TYPE)
803 return -EINVAL;
804 F2FS_OPTION(sbi).active_logs = arg;
805 break;
806 case Opt_disable_ext_identify:
807 set_opt(sbi, DISABLE_EXT_IDENTIFY);
808 break;
809 case Opt_inline_data:
810 set_opt(sbi, INLINE_DATA);
811 break;
812 case Opt_inline_dentry:
813 set_opt(sbi, INLINE_DENTRY);
814 break;
815 case Opt_noinline_dentry:
816 clear_opt(sbi, INLINE_DENTRY);
817 break;
818 case Opt_flush_merge:
819 set_opt(sbi, FLUSH_MERGE);
820 break;
821 case Opt_noflush_merge:
822 clear_opt(sbi, FLUSH_MERGE);
823 break;
824 case Opt_nobarrier:
825 set_opt(sbi, NOBARRIER);
826 break;
827 case Opt_fastboot:
828 set_opt(sbi, FASTBOOT);
829 break;
830 case Opt_extent_cache:
831 set_opt(sbi, EXTENT_CACHE);
832 break;
833 case Opt_noextent_cache:
834 clear_opt(sbi, EXTENT_CACHE);
835 break;
836 case Opt_noinline_data:
837 clear_opt(sbi, INLINE_DATA);
838 break;
839 case Opt_data_flush:
840 set_opt(sbi, DATA_FLUSH);
841 break;
842 case Opt_reserve_root:
843 if (args->from && match_int(args, &arg))
844 return -EINVAL;
845 if (test_opt(sbi, RESERVE_ROOT)) {
846 f2fs_info(sbi, "Preserve previous reserve_root=%u",
847 F2FS_OPTION(sbi).root_reserved_blocks);
848 } else {
849 F2FS_OPTION(sbi).root_reserved_blocks = arg;
850 set_opt(sbi, RESERVE_ROOT);
851 }
852 break;
853 case Opt_resuid:
854 if (args->from && match_int(args, &arg))
855 return -EINVAL;
856 uid = make_kuid(current_user_ns(), arg);
857 if (!uid_valid(uid)) {
858 f2fs_err(sbi, "Invalid uid value %d", arg);
859 return -EINVAL;
860 }
861 F2FS_OPTION(sbi).s_resuid = uid;
862 break;
863 case Opt_resgid:
864 if (args->from && match_int(args, &arg))
865 return -EINVAL;
866 gid = make_kgid(current_user_ns(), arg);
867 if (!gid_valid(gid)) {
868 f2fs_err(sbi, "Invalid gid value %d", arg);
869 return -EINVAL;
870 }
871 F2FS_OPTION(sbi).s_resgid = gid;
872 break;
873 case Opt_mode:
874 name = match_strdup(&args[0]);
875
876 if (!name)
877 return -ENOMEM;
878 if (!strcmp(name, "adaptive")) {
879 if (f2fs_sb_has_blkzoned(sbi)) {
880 f2fs_warn(sbi, "adaptive mode is not allowed with zoned block device feature");
881 kfree(name);
882 return -EINVAL;
883 }
884 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE;
885 } else if (!strcmp(name, "lfs")) {
886 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS;
887 } else if (!strcmp(name, "fragment:segment")) {
888 F2FS_OPTION(sbi).fs_mode = FS_MODE_FRAGMENT_SEG;
889 } else if (!strcmp(name, "fragment:block")) {
890 F2FS_OPTION(sbi).fs_mode = FS_MODE_FRAGMENT_BLK;
891 } else {
892 kfree(name);
893 return -EINVAL;
894 }
895 kfree(name);
896 break;
897 case Opt_io_size_bits:
898 if (args->from && match_int(args, &arg))
899 return -EINVAL;
900 if (arg <= 0 || arg > __ilog2_u32(BIO_MAX_VECS)) {
901 f2fs_warn(sbi, "Not support %d, larger than %d",
902 1 << arg, BIO_MAX_VECS);
903 return -EINVAL;
904 }
905 F2FS_OPTION(sbi).write_io_size_bits = arg;
906 break;
907 #ifdef CONFIG_F2FS_FAULT_INJECTION
908 case Opt_fault_injection:
909 if (args->from && match_int(args, &arg))
910 return -EINVAL;
911 f2fs_build_fault_attr(sbi, arg, F2FS_ALL_FAULT_TYPE);
912 set_opt(sbi, FAULT_INJECTION);
913 break;
914
915 case Opt_fault_type:
916 if (args->from && match_int(args, &arg))
917 return -EINVAL;
918 f2fs_build_fault_attr(sbi, 0, arg);
919 set_opt(sbi, FAULT_INJECTION);
920 break;
921 #else
922 case Opt_fault_injection:
923 f2fs_info(sbi, "fault_injection options not supported");
924 break;
925
926 case Opt_fault_type:
927 f2fs_info(sbi, "fault_type options not supported");
928 break;
929 #endif
930 case Opt_lazytime:
931 sb->s_flags |= SB_LAZYTIME;
932 break;
933 case Opt_nolazytime:
934 sb->s_flags &= ~SB_LAZYTIME;
935 break;
936 #ifdef CONFIG_QUOTA
937 case Opt_quota:
938 case Opt_usrquota:
939 set_opt(sbi, USRQUOTA);
940 break;
941 case Opt_grpquota:
942 set_opt(sbi, GRPQUOTA);
943 break;
944 case Opt_prjquota:
945 set_opt(sbi, PRJQUOTA);
946 break;
947 case Opt_usrjquota:
948 ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]);
949 if (ret)
950 return ret;
951 break;
952 case Opt_grpjquota:
953 ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]);
954 if (ret)
955 return ret;
956 break;
957 case Opt_prjjquota:
958 ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]);
959 if (ret)
960 return ret;
961 break;
962 case Opt_offusrjquota:
963 ret = f2fs_clear_qf_name(sb, USRQUOTA);
964 if (ret)
965 return ret;
966 break;
967 case Opt_offgrpjquota:
968 ret = f2fs_clear_qf_name(sb, GRPQUOTA);
969 if (ret)
970 return ret;
971 break;
972 case Opt_offprjjquota:
973 ret = f2fs_clear_qf_name(sb, PRJQUOTA);
974 if (ret)
975 return ret;
976 break;
977 case Opt_jqfmt_vfsold:
978 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD;
979 break;
980 case Opt_jqfmt_vfsv0:
981 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0;
982 break;
983 case Opt_jqfmt_vfsv1:
984 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1;
985 break;
986 case Opt_noquota:
987 clear_opt(sbi, QUOTA);
988 clear_opt(sbi, USRQUOTA);
989 clear_opt(sbi, GRPQUOTA);
990 clear_opt(sbi, PRJQUOTA);
991 break;
992 #else
993 case Opt_quota:
994 case Opt_usrquota:
995 case Opt_grpquota:
996 case Opt_prjquota:
997 case Opt_usrjquota:
998 case Opt_grpjquota:
999 case Opt_prjjquota:
1000 case Opt_offusrjquota:
1001 case Opt_offgrpjquota:
1002 case Opt_offprjjquota:
1003 case Opt_jqfmt_vfsold:
1004 case Opt_jqfmt_vfsv0:
1005 case Opt_jqfmt_vfsv1:
1006 case Opt_noquota:
1007 f2fs_info(sbi, "quota operations not supported");
1008 break;
1009 #endif
1010 case Opt_whint:
1011 name = match_strdup(&args[0]);
1012 if (!name)
1013 return -ENOMEM;
1014 if (!strcmp(name, "user-based")) {
1015 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_USER;
1016 } else if (!strcmp(name, "off")) {
1017 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
1018 } else if (!strcmp(name, "fs-based")) {
1019 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_FS;
1020 } else {
1021 kfree(name);
1022 return -EINVAL;
1023 }
1024 kfree(name);
1025 break;
1026 case Opt_alloc:
1027 name = match_strdup(&args[0]);
1028 if (!name)
1029 return -ENOMEM;
1030
1031 if (!strcmp(name, "default")) {
1032 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
1033 } else if (!strcmp(name, "reuse")) {
1034 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
1035 } else {
1036 kfree(name);
1037 return -EINVAL;
1038 }
1039 kfree(name);
1040 break;
1041 case Opt_fsync:
1042 name = match_strdup(&args[0]);
1043 if (!name)
1044 return -ENOMEM;
1045 if (!strcmp(name, "posix")) {
1046 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
1047 } else if (!strcmp(name, "strict")) {
1048 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT;
1049 } else if (!strcmp(name, "nobarrier")) {
1050 F2FS_OPTION(sbi).fsync_mode =
1051 FSYNC_MODE_NOBARRIER;
1052 } else {
1053 kfree(name);
1054 return -EINVAL;
1055 }
1056 kfree(name);
1057 break;
1058 case Opt_test_dummy_encryption:
1059 ret = f2fs_set_test_dummy_encryption(sb, p, &args[0],
1060 is_remount);
1061 if (ret)
1062 return ret;
1063 break;
1064 case Opt_inlinecrypt:
1065 #ifdef CONFIG_FS_ENCRYPTION_INLINE_CRYPT
1066 sb->s_flags |= SB_INLINECRYPT;
1067 #else
1068 f2fs_info(sbi, "inline encryption not supported");
1069 #endif
1070 break;
1071 case Opt_checkpoint_disable_cap_perc:
1072 if (args->from && match_int(args, &arg))
1073 return -EINVAL;
1074 if (arg < 0 || arg > 100)
1075 return -EINVAL;
1076 F2FS_OPTION(sbi).unusable_cap_perc = arg;
1077 set_opt(sbi, DISABLE_CHECKPOINT);
1078 break;
1079 case Opt_checkpoint_disable_cap:
1080 if (args->from && match_int(args, &arg))
1081 return -EINVAL;
1082 F2FS_OPTION(sbi).unusable_cap = arg;
1083 set_opt(sbi, DISABLE_CHECKPOINT);
1084 break;
1085 case Opt_checkpoint_disable:
1086 set_opt(sbi, DISABLE_CHECKPOINT);
1087 break;
1088 case Opt_checkpoint_enable:
1089 clear_opt(sbi, DISABLE_CHECKPOINT);
1090 break;
1091 case Opt_checkpoint_merge:
1092 set_opt(sbi, MERGE_CHECKPOINT);
1093 break;
1094 case Opt_nocheckpoint_merge:
1095 clear_opt(sbi, MERGE_CHECKPOINT);
1096 break;
1097 #ifdef CONFIG_F2FS_FS_COMPRESSION
1098 case Opt_compress_algorithm:
1099 if (!f2fs_sb_has_compression(sbi)) {
1100 f2fs_info(sbi, "Image doesn't support compression");
1101 break;
1102 }
1103 name = match_strdup(&args[0]);
1104 if (!name)
1105 return -ENOMEM;
1106 if (!strcmp(name, "lzo")) {
1107 #ifdef CONFIG_F2FS_FS_LZO
1108 F2FS_OPTION(sbi).compress_level = 0;
1109 F2FS_OPTION(sbi).compress_algorithm =
1110 COMPRESS_LZO;
1111 #else
1112 f2fs_info(sbi, "kernel doesn't support lzo compression");
1113 #endif
1114 } else if (!strncmp(name, "lz4", 3)) {
1115 #ifdef CONFIG_F2FS_FS_LZ4
1116 ret = f2fs_set_lz4hc_level(sbi, name);
1117 if (ret) {
1118 kfree(name);
1119 return -EINVAL;
1120 }
1121 F2FS_OPTION(sbi).compress_algorithm =
1122 COMPRESS_LZ4;
1123 #else
1124 f2fs_info(sbi, "kernel doesn't support lz4 compression");
1125 #endif
1126 } else if (!strncmp(name, "zstd", 4)) {
1127 #ifdef CONFIG_F2FS_FS_ZSTD
1128 ret = f2fs_set_zstd_level(sbi, name);
1129 if (ret) {
1130 kfree(name);
1131 return -EINVAL;
1132 }
1133 F2FS_OPTION(sbi).compress_algorithm =
1134 COMPRESS_ZSTD;
1135 #else
1136 f2fs_info(sbi, "kernel doesn't support zstd compression");
1137 #endif
1138 } else if (!strcmp(name, "lzo-rle")) {
1139 #ifdef CONFIG_F2FS_FS_LZORLE
1140 F2FS_OPTION(sbi).compress_level = 0;
1141 F2FS_OPTION(sbi).compress_algorithm =
1142 COMPRESS_LZORLE;
1143 #else
1144 f2fs_info(sbi, "kernel doesn't support lzorle compression");
1145 #endif
1146 } else {
1147 kfree(name);
1148 return -EINVAL;
1149 }
1150 kfree(name);
1151 break;
1152 case Opt_compress_log_size:
1153 if (!f2fs_sb_has_compression(sbi)) {
1154 f2fs_info(sbi, "Image doesn't support compression");
1155 break;
1156 }
1157 if (args->from && match_int(args, &arg))
1158 return -EINVAL;
1159 if (arg < MIN_COMPRESS_LOG_SIZE ||
1160 arg > MAX_COMPRESS_LOG_SIZE) {
1161 f2fs_err(sbi,
1162 "Compress cluster log size is out of range");
1163 return -EINVAL;
1164 }
1165 F2FS_OPTION(sbi).compress_log_size = arg;
1166 break;
1167 case Opt_compress_extension:
1168 if (!f2fs_sb_has_compression(sbi)) {
1169 f2fs_info(sbi, "Image doesn't support compression");
1170 break;
1171 }
1172 name = match_strdup(&args[0]);
1173 if (!name)
1174 return -ENOMEM;
1175
1176 ext = F2FS_OPTION(sbi).extensions;
1177 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
1178
1179 if (strlen(name) >= F2FS_EXTENSION_LEN ||
1180 ext_cnt >= COMPRESS_EXT_NUM) {
1181 f2fs_err(sbi,
1182 "invalid extension length/number");
1183 kfree(name);
1184 return -EINVAL;
1185 }
1186
1187 if (is_compress_extension_exist(sbi, name, true)) {
1188 kfree(name);
1189 break;
1190 }
1191
1192 strcpy(ext[ext_cnt], name);
1193 F2FS_OPTION(sbi).compress_ext_cnt++;
1194 kfree(name);
1195 break;
1196 case Opt_nocompress_extension:
1197 if (!f2fs_sb_has_compression(sbi)) {
1198 f2fs_info(sbi, "Image doesn't support compression");
1199 break;
1200 }
1201 name = match_strdup(&args[0]);
1202 if (!name)
1203 return -ENOMEM;
1204
1205 noext = F2FS_OPTION(sbi).noextensions;
1206 noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
1207
1208 if (strlen(name) >= F2FS_EXTENSION_LEN ||
1209 noext_cnt >= COMPRESS_EXT_NUM) {
1210 f2fs_err(sbi,
1211 "invalid extension length/number");
1212 kfree(name);
1213 return -EINVAL;
1214 }
1215
1216 if (is_compress_extension_exist(sbi, name, false)) {
1217 kfree(name);
1218 break;
1219 }
1220
1221 strcpy(noext[noext_cnt], name);
1222 F2FS_OPTION(sbi).nocompress_ext_cnt++;
1223 kfree(name);
1224 break;
1225 case Opt_compress_chksum:
1226 F2FS_OPTION(sbi).compress_chksum = true;
1227 break;
1228 case Opt_compress_mode:
1229 name = match_strdup(&args[0]);
1230 if (!name)
1231 return -ENOMEM;
1232 if (!strcmp(name, "fs")) {
1233 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS;
1234 } else if (!strcmp(name, "user")) {
1235 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_USER;
1236 } else {
1237 kfree(name);
1238 return -EINVAL;
1239 }
1240 kfree(name);
1241 break;
1242 case Opt_compress_cache:
1243 set_opt(sbi, COMPRESS_CACHE);
1244 break;
1245 #else
1246 case Opt_compress_algorithm:
1247 case Opt_compress_log_size:
1248 case Opt_compress_extension:
1249 case Opt_nocompress_extension:
1250 case Opt_compress_chksum:
1251 case Opt_compress_mode:
1252 case Opt_compress_cache:
1253 f2fs_info(sbi, "compression options not supported");
1254 break;
1255 #endif
1256 case Opt_atgc:
1257 set_opt(sbi, ATGC);
1258 break;
1259 case Opt_gc_merge:
1260 set_opt(sbi, GC_MERGE);
1261 break;
1262 case Opt_nogc_merge:
1263 clear_opt(sbi, GC_MERGE);
1264 break;
1265 case Opt_discard_unit:
1266 name = match_strdup(&args[0]);
1267 if (!name)
1268 return -ENOMEM;
1269 if (!strcmp(name, "block")) {
1270 F2FS_OPTION(sbi).discard_unit =
1271 DISCARD_UNIT_BLOCK;
1272 } else if (!strcmp(name, "segment")) {
1273 F2FS_OPTION(sbi).discard_unit =
1274 DISCARD_UNIT_SEGMENT;
1275 } else if (!strcmp(name, "section")) {
1276 F2FS_OPTION(sbi).discard_unit =
1277 DISCARD_UNIT_SECTION;
1278 } else {
1279 kfree(name);
1280 return -EINVAL;
1281 }
1282 kfree(name);
1283 break;
1284 case Opt_memory_mode:
1285 name = match_strdup(&args[0]);
1286 if (!name)
1287 return -ENOMEM;
1288 if (!strcmp(name, "normal")) {
1289 F2FS_OPTION(sbi).memory_mode =
1290 MEMORY_MODE_NORMAL;
1291 } else if (!strcmp(name, "low")) {
1292 F2FS_OPTION(sbi).memory_mode =
1293 MEMORY_MODE_LOW;
1294 } else {
1295 kfree(name);
1296 return -EINVAL;
1297 }
1298 kfree(name);
1299 break;
1300 default:
1301 f2fs_err(sbi, "Unrecognized mount option \"%s\" or missing value",
1302 p);
1303 return -EINVAL;
1304 }
1305 }
1306 default_check:
1307 #ifdef CONFIG_QUOTA
1308 if (f2fs_check_quota_options(sbi))
1309 return -EINVAL;
1310 #else
1311 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sbi->sb)) {
1312 f2fs_info(sbi, "Filesystem with quota feature cannot be mounted RDWR without CONFIG_QUOTA");
1313 return -EINVAL;
1314 }
1315 if (f2fs_sb_has_project_quota(sbi) && !f2fs_readonly(sbi->sb)) {
1316 f2fs_err(sbi, "Filesystem with project quota feature cannot be mounted RDWR without CONFIG_QUOTA");
1317 return -EINVAL;
1318 }
1319 #endif
1320 #ifndef CONFIG_UNICODE
1321 if (f2fs_sb_has_casefold(sbi)) {
1322 f2fs_err(sbi,
1323 "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
1324 return -EINVAL;
1325 }
1326 #endif
1327 /*
1328 * The BLKZONED feature indicates that the drive was formatted with
1329 * zone alignment optimization. This is optional for host-aware
1330 * devices, but mandatory for host-managed zoned block devices.
1331 */
1332 #ifndef CONFIG_BLK_DEV_ZONED
1333 if (f2fs_sb_has_blkzoned(sbi)) {
1334 f2fs_err(sbi, "Zoned block device support is not enabled");
1335 return -EINVAL;
1336 }
1337 #endif
1338 if (f2fs_sb_has_blkzoned(sbi)) {
1339 if (F2FS_OPTION(sbi).discard_unit !=
1340 DISCARD_UNIT_SECTION) {
1341 f2fs_info(sbi, "Zoned block device doesn't need small discard, set discard_unit=section by default");
1342 F2FS_OPTION(sbi).discard_unit =
1343 DISCARD_UNIT_SECTION;
1344 }
1345 }
1346
1347 #ifdef CONFIG_F2FS_FS_COMPRESSION
1348 if (f2fs_test_compress_extension(sbi)) {
1349 f2fs_err(sbi, "invalid compress or nocompress extension");
1350 return -EINVAL;
1351 }
1352 #endif
1353
1354 if (F2FS_IO_SIZE_BITS(sbi) && !f2fs_lfs_mode(sbi)) {
1355 f2fs_err(sbi, "Should set mode=lfs with %uKB-sized IO",
1356 F2FS_IO_SIZE_KB(sbi));
1357 return -EINVAL;
1358 }
1359
1360 if (test_opt(sbi, INLINE_XATTR_SIZE)) {
1361 int min_size, max_size;
1362
1363 if (!f2fs_sb_has_extra_attr(sbi) ||
1364 !f2fs_sb_has_flexible_inline_xattr(sbi)) {
1365 f2fs_err(sbi, "extra_attr or flexible_inline_xattr feature is off");
1366 return -EINVAL;
1367 }
1368 if (!test_opt(sbi, INLINE_XATTR)) {
1369 f2fs_err(sbi, "inline_xattr_size option should be set with inline_xattr option");
1370 return -EINVAL;
1371 }
1372
1373 min_size = sizeof(struct f2fs_xattr_header) / sizeof(__le32);
1374 max_size = MAX_INLINE_XATTR_SIZE;
1375
1376 if (F2FS_OPTION(sbi).inline_xattr_size < min_size ||
1377 F2FS_OPTION(sbi).inline_xattr_size > max_size) {
1378 f2fs_err(sbi, "inline xattr size is out of range: %d ~ %d",
1379 min_size, max_size);
1380 return -EINVAL;
1381 }
1382 }
1383
1384 if (test_opt(sbi, DISABLE_CHECKPOINT) && f2fs_lfs_mode(sbi)) {
1385 f2fs_err(sbi, "LFS not compatible with checkpoint=disable");
1386 return -EINVAL;
1387 }
1388
1389 /* Not pass down write hints if the number of active logs is lesser
1390 * than NR_CURSEG_PERSIST_TYPE.
1391 */
1392 if (F2FS_OPTION(sbi).active_logs != NR_CURSEG_PERSIST_TYPE)
1393 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
1394
1395 if (f2fs_sb_has_readonly(sbi) && !f2fs_readonly(sbi->sb)) {
1396 f2fs_err(sbi, "Allow to mount readonly mode only");
1397 return -EROFS;
1398 }
1399 return 0;
1400 }
1401
f2fs_alloc_inode(struct super_block * sb)1402 static struct inode *f2fs_alloc_inode(struct super_block *sb)
1403 {
1404 struct f2fs_inode_info *fi;
1405
1406 fi = f2fs_kmem_cache_alloc(f2fs_inode_cachep,
1407 GFP_F2FS_ZERO, false, F2FS_SB(sb));
1408 if (!fi)
1409 return NULL;
1410
1411 init_once((void *) fi);
1412
1413 /* Initialize f2fs-specific inode info */
1414 atomic_set(&fi->dirty_pages, 0);
1415 atomic_set(&fi->i_compr_blocks, 0);
1416 init_f2fs_rwsem(&fi->i_sem);
1417 spin_lock_init(&fi->i_size_lock);
1418 INIT_LIST_HEAD(&fi->dirty_list);
1419 INIT_LIST_HEAD(&fi->gdirty_list);
1420 init_f2fs_rwsem(&fi->i_gc_rwsem[READ]);
1421 init_f2fs_rwsem(&fi->i_gc_rwsem[WRITE]);
1422 init_f2fs_rwsem(&fi->i_xattr_sem);
1423
1424 /* Will be used by directory only */
1425 fi->i_dir_level = F2FS_SB(sb)->dir_level;
1426
1427 return &fi->vfs_inode;
1428 }
1429
f2fs_drop_inode(struct inode * inode)1430 static int f2fs_drop_inode(struct inode *inode)
1431 {
1432 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1433 int ret;
1434
1435 /*
1436 * during filesystem shutdown, if checkpoint is disabled,
1437 * drop useless meta/node dirty pages.
1438 */
1439 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
1440 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
1441 inode->i_ino == F2FS_META_INO(sbi)) {
1442 trace_f2fs_drop_inode(inode, 1);
1443 return 1;
1444 }
1445 }
1446
1447 /*
1448 * This is to avoid a deadlock condition like below.
1449 * writeback_single_inode(inode)
1450 * - f2fs_write_data_page
1451 * - f2fs_gc -> iput -> evict
1452 * - inode_wait_for_writeback(inode)
1453 */
1454 if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) {
1455 if (!inode->i_nlink && !is_bad_inode(inode)) {
1456 /* to avoid evict_inode call simultaneously */
1457 atomic_inc(&inode->i_count);
1458 spin_unlock(&inode->i_lock);
1459
1460 /* should remain fi->extent_tree for writepage */
1461 f2fs_destroy_extent_node(inode);
1462
1463 sb_start_intwrite(inode->i_sb);
1464 f2fs_i_size_write(inode, 0);
1465
1466 f2fs_submit_merged_write_cond(F2FS_I_SB(inode),
1467 inode, NULL, 0, DATA);
1468 truncate_inode_pages_final(inode->i_mapping);
1469
1470 if (F2FS_HAS_BLOCKS(inode))
1471 f2fs_truncate(inode);
1472
1473 sb_end_intwrite(inode->i_sb);
1474
1475 spin_lock(&inode->i_lock);
1476 atomic_dec(&inode->i_count);
1477 }
1478 trace_f2fs_drop_inode(inode, 0);
1479 return 0;
1480 }
1481 ret = generic_drop_inode(inode);
1482 if (!ret)
1483 ret = fscrypt_drop_inode(inode);
1484 trace_f2fs_drop_inode(inode, ret);
1485 return ret;
1486 }
1487
f2fs_inode_dirtied(struct inode * inode,bool sync)1488 int f2fs_inode_dirtied(struct inode *inode, bool sync)
1489 {
1490 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1491 int ret = 0;
1492
1493 spin_lock(&sbi->inode_lock[DIRTY_META]);
1494 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
1495 ret = 1;
1496 } else {
1497 set_inode_flag(inode, FI_DIRTY_INODE);
1498 stat_inc_dirty_inode(sbi, DIRTY_META);
1499 }
1500 if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) {
1501 list_add_tail(&F2FS_I(inode)->gdirty_list,
1502 &sbi->inode_list[DIRTY_META]);
1503 inc_page_count(sbi, F2FS_DIRTY_IMETA);
1504 }
1505 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1506 return ret;
1507 }
1508
f2fs_inode_synced(struct inode * inode)1509 void f2fs_inode_synced(struct inode *inode)
1510 {
1511 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1512
1513 spin_lock(&sbi->inode_lock[DIRTY_META]);
1514 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) {
1515 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1516 return;
1517 }
1518 if (!list_empty(&F2FS_I(inode)->gdirty_list)) {
1519 list_del_init(&F2FS_I(inode)->gdirty_list);
1520 dec_page_count(sbi, F2FS_DIRTY_IMETA);
1521 }
1522 clear_inode_flag(inode, FI_DIRTY_INODE);
1523 clear_inode_flag(inode, FI_AUTO_RECOVER);
1524 stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META);
1525 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1526 }
1527
1528 /*
1529 * f2fs_dirty_inode() is called from __mark_inode_dirty()
1530 *
1531 * We should call set_dirty_inode to write the dirty inode through write_inode.
1532 */
f2fs_dirty_inode(struct inode * inode,int flags)1533 static void f2fs_dirty_inode(struct inode *inode, int flags)
1534 {
1535 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1536
1537 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
1538 inode->i_ino == F2FS_META_INO(sbi))
1539 return;
1540
1541 if (is_inode_flag_set(inode, FI_AUTO_RECOVER))
1542 clear_inode_flag(inode, FI_AUTO_RECOVER);
1543
1544 f2fs_inode_dirtied(inode, false);
1545 }
1546
f2fs_free_inode(struct inode * inode)1547 static void f2fs_free_inode(struct inode *inode)
1548 {
1549 fscrypt_free_inode(inode);
1550 kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode));
1551 }
1552
destroy_percpu_info(struct f2fs_sb_info * sbi)1553 static void destroy_percpu_info(struct f2fs_sb_info *sbi)
1554 {
1555 percpu_counter_destroy(&sbi->total_valid_inode_count);
1556 percpu_counter_destroy(&sbi->rf_node_block_count);
1557 percpu_counter_destroy(&sbi->alloc_valid_block_count);
1558 }
1559
destroy_device_list(struct f2fs_sb_info * sbi)1560 static void destroy_device_list(struct f2fs_sb_info *sbi)
1561 {
1562 int i;
1563
1564 for (i = 0; i < sbi->s_ndevs; i++) {
1565 blkdev_put(FDEV(i).bdev, FMODE_EXCL);
1566 #ifdef CONFIG_BLK_DEV_ZONED
1567 kvfree(FDEV(i).blkz_seq);
1568 #endif
1569 }
1570 kvfree(sbi->devs);
1571 }
1572
f2fs_put_super(struct super_block * sb)1573 static void f2fs_put_super(struct super_block *sb)
1574 {
1575 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1576 int i;
1577 bool dropped;
1578
1579 /* unregister procfs/sysfs entries in advance to avoid race case */
1580 f2fs_unregister_sysfs(sbi);
1581
1582 f2fs_quota_off_umount(sb);
1583
1584 /* prevent remaining shrinker jobs */
1585 mutex_lock(&sbi->umount_mutex);
1586
1587 /*
1588 * flush all issued checkpoints and stop checkpoint issue thread.
1589 * after then, all checkpoints should be done by each process context.
1590 */
1591 f2fs_stop_ckpt_thread(sbi);
1592
1593 /*
1594 * We don't need to do checkpoint when superblock is clean.
1595 * But, the previous checkpoint was not done by umount, it needs to do
1596 * clean checkpoint again.
1597 */
1598 if ((is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
1599 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))) {
1600 struct cp_control cpc = {
1601 .reason = CP_UMOUNT,
1602 };
1603 f2fs_write_checkpoint(sbi, &cpc);
1604 }
1605
1606 /* be sure to wait for any on-going discard commands */
1607 dropped = f2fs_issue_discard_timeout(sbi);
1608
1609 if ((f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) &&
1610 !sbi->discard_blks && !dropped) {
1611 struct cp_control cpc = {
1612 .reason = CP_UMOUNT | CP_TRIMMED,
1613 };
1614 f2fs_write_checkpoint(sbi, &cpc);
1615 }
1616
1617 /*
1618 * normally superblock is clean, so we need to release this.
1619 * In addition, EIO will skip do checkpoint, we need this as well.
1620 */
1621 f2fs_release_ino_entry(sbi, true);
1622
1623 f2fs_leave_shrinker(sbi);
1624 mutex_unlock(&sbi->umount_mutex);
1625
1626 /* our cp_error case, we can wait for any writeback page */
1627 f2fs_flush_merged_writes(sbi);
1628
1629 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA);
1630
1631 f2fs_bug_on(sbi, sbi->fsync_node_num);
1632
1633 f2fs_destroy_compress_inode(sbi);
1634
1635 iput(sbi->node_inode);
1636 sbi->node_inode = NULL;
1637
1638 iput(sbi->meta_inode);
1639 sbi->meta_inode = NULL;
1640
1641 /*
1642 * iput() can update stat information, if f2fs_write_checkpoint()
1643 * above failed with error.
1644 */
1645 f2fs_destroy_stats(sbi);
1646
1647 /* destroy f2fs internal modules */
1648 f2fs_destroy_node_manager(sbi);
1649 f2fs_destroy_segment_manager(sbi);
1650
1651 f2fs_destroy_post_read_wq(sbi);
1652
1653 kvfree(sbi->ckpt);
1654
1655 sb->s_fs_info = NULL;
1656 if (sbi->s_chksum_driver)
1657 crypto_free_shash(sbi->s_chksum_driver);
1658 kfree(sbi->raw_super);
1659
1660 destroy_device_list(sbi);
1661 f2fs_destroy_page_array_cache(sbi);
1662 f2fs_destroy_xattr_caches(sbi);
1663 mempool_destroy(sbi->write_io_dummy);
1664 #ifdef CONFIG_QUOTA
1665 for (i = 0; i < MAXQUOTAS; i++)
1666 kfree(F2FS_OPTION(sbi).s_qf_names[i]);
1667 #endif
1668 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy);
1669 destroy_percpu_info(sbi);
1670 f2fs_destroy_iostat(sbi);
1671 for (i = 0; i < NR_PAGE_TYPE; i++)
1672 kvfree(sbi->write_io[i]);
1673 #ifdef CONFIG_UNICODE
1674 utf8_unload(sb->s_encoding);
1675 #endif
1676 kfree(sbi);
1677 }
1678
f2fs_sync_fs(struct super_block * sb,int sync)1679 int f2fs_sync_fs(struct super_block *sb, int sync)
1680 {
1681 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1682 int err = 0;
1683
1684 if (unlikely(f2fs_cp_error(sbi)))
1685 return 0;
1686 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
1687 return 0;
1688
1689 trace_f2fs_sync_fs(sb, sync);
1690
1691 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
1692 return -EAGAIN;
1693
1694 if (sync)
1695 err = f2fs_issue_checkpoint(sbi);
1696
1697 return err;
1698 }
1699
f2fs_freeze(struct super_block * sb)1700 static int f2fs_freeze(struct super_block *sb)
1701 {
1702 if (f2fs_readonly(sb))
1703 return 0;
1704
1705 /* IO error happened before */
1706 if (unlikely(f2fs_cp_error(F2FS_SB(sb))))
1707 return -EIO;
1708
1709 /* must be clean, since sync_filesystem() was already called */
1710 if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY))
1711 return -EINVAL;
1712
1713 /* Let's flush checkpoints and stop the thread. */
1714 f2fs_flush_ckpt_thread(F2FS_SB(sb));
1715
1716 /* to avoid deadlock on f2fs_evict_inode->SB_FREEZE_FS */
1717 set_sbi_flag(F2FS_SB(sb), SBI_IS_FREEZING);
1718 return 0;
1719 }
1720
f2fs_unfreeze(struct super_block * sb)1721 static int f2fs_unfreeze(struct super_block *sb)
1722 {
1723 clear_sbi_flag(F2FS_SB(sb), SBI_IS_FREEZING);
1724 return 0;
1725 }
1726
1727 #ifdef CONFIG_QUOTA
f2fs_statfs_project(struct super_block * sb,kprojid_t projid,struct kstatfs * buf)1728 static int f2fs_statfs_project(struct super_block *sb,
1729 kprojid_t projid, struct kstatfs *buf)
1730 {
1731 struct kqid qid;
1732 struct dquot *dquot;
1733 u64 limit;
1734 u64 curblock;
1735
1736 qid = make_kqid_projid(projid);
1737 dquot = dqget(sb, qid);
1738 if (IS_ERR(dquot))
1739 return PTR_ERR(dquot);
1740 spin_lock(&dquot->dq_dqb_lock);
1741
1742 limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit,
1743 dquot->dq_dqb.dqb_bhardlimit);
1744 if (limit)
1745 limit >>= sb->s_blocksize_bits;
1746
1747 if (limit && buf->f_blocks > limit) {
1748 curblock = (dquot->dq_dqb.dqb_curspace +
1749 dquot->dq_dqb.dqb_rsvspace) >> sb->s_blocksize_bits;
1750 buf->f_blocks = limit;
1751 buf->f_bfree = buf->f_bavail =
1752 (buf->f_blocks > curblock) ?
1753 (buf->f_blocks - curblock) : 0;
1754 }
1755
1756 limit = min_not_zero(dquot->dq_dqb.dqb_isoftlimit,
1757 dquot->dq_dqb.dqb_ihardlimit);
1758
1759 if (limit && buf->f_files > limit) {
1760 buf->f_files = limit;
1761 buf->f_ffree =
1762 (buf->f_files > dquot->dq_dqb.dqb_curinodes) ?
1763 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0;
1764 }
1765
1766 spin_unlock(&dquot->dq_dqb_lock);
1767 dqput(dquot);
1768 return 0;
1769 }
1770 #endif
1771
f2fs_statfs(struct dentry * dentry,struct kstatfs * buf)1772 static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf)
1773 {
1774 struct super_block *sb = dentry->d_sb;
1775 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1776 u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
1777 block_t total_count, user_block_count, start_count;
1778 u64 avail_node_count;
1779
1780 total_count = le64_to_cpu(sbi->raw_super->block_count);
1781 user_block_count = sbi->user_block_count;
1782 start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr);
1783 buf->f_type = F2FS_SUPER_MAGIC;
1784 buf->f_bsize = sbi->blocksize;
1785
1786 buf->f_blocks = total_count - start_count;
1787 buf->f_bfree = user_block_count - valid_user_blocks(sbi) -
1788 sbi->current_reserved_blocks;
1789
1790 spin_lock(&sbi->stat_lock);
1791 if (unlikely(buf->f_bfree <= sbi->unusable_block_count))
1792 buf->f_bfree = 0;
1793 else
1794 buf->f_bfree -= sbi->unusable_block_count;
1795 spin_unlock(&sbi->stat_lock);
1796
1797 if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks)
1798 buf->f_bavail = buf->f_bfree -
1799 F2FS_OPTION(sbi).root_reserved_blocks;
1800 else
1801 buf->f_bavail = 0;
1802
1803 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
1804
1805 if (avail_node_count > user_block_count) {
1806 buf->f_files = user_block_count;
1807 buf->f_ffree = buf->f_bavail;
1808 } else {
1809 buf->f_files = avail_node_count;
1810 buf->f_ffree = min(avail_node_count - valid_node_count(sbi),
1811 buf->f_bavail);
1812 }
1813
1814 buf->f_namelen = F2FS_NAME_LEN;
1815 buf->f_fsid = u64_to_fsid(id);
1816
1817 #ifdef CONFIG_QUOTA
1818 if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) &&
1819 sb_has_quota_limits_enabled(sb, PRJQUOTA)) {
1820 f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf);
1821 }
1822 #endif
1823 return 0;
1824 }
1825
f2fs_show_quota_options(struct seq_file * seq,struct super_block * sb)1826 static inline void f2fs_show_quota_options(struct seq_file *seq,
1827 struct super_block *sb)
1828 {
1829 #ifdef CONFIG_QUOTA
1830 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1831
1832 if (F2FS_OPTION(sbi).s_jquota_fmt) {
1833 char *fmtname = "";
1834
1835 switch (F2FS_OPTION(sbi).s_jquota_fmt) {
1836 case QFMT_VFS_OLD:
1837 fmtname = "vfsold";
1838 break;
1839 case QFMT_VFS_V0:
1840 fmtname = "vfsv0";
1841 break;
1842 case QFMT_VFS_V1:
1843 fmtname = "vfsv1";
1844 break;
1845 }
1846 seq_printf(seq, ",jqfmt=%s", fmtname);
1847 }
1848
1849 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
1850 seq_show_option(seq, "usrjquota",
1851 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]);
1852
1853 if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
1854 seq_show_option(seq, "grpjquota",
1855 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]);
1856
1857 if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
1858 seq_show_option(seq, "prjjquota",
1859 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]);
1860 #endif
1861 }
1862
1863 #ifdef CONFIG_F2FS_FS_COMPRESSION
f2fs_show_compress_options(struct seq_file * seq,struct super_block * sb)1864 static inline void f2fs_show_compress_options(struct seq_file *seq,
1865 struct super_block *sb)
1866 {
1867 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1868 char *algtype = "";
1869 int i;
1870
1871 if (!f2fs_sb_has_compression(sbi))
1872 return;
1873
1874 switch (F2FS_OPTION(sbi).compress_algorithm) {
1875 case COMPRESS_LZO:
1876 algtype = "lzo";
1877 break;
1878 case COMPRESS_LZ4:
1879 algtype = "lz4";
1880 break;
1881 case COMPRESS_ZSTD:
1882 algtype = "zstd";
1883 break;
1884 case COMPRESS_LZORLE:
1885 algtype = "lzo-rle";
1886 break;
1887 }
1888 seq_printf(seq, ",compress_algorithm=%s", algtype);
1889
1890 if (F2FS_OPTION(sbi).compress_level)
1891 seq_printf(seq, ":%d", F2FS_OPTION(sbi).compress_level);
1892
1893 seq_printf(seq, ",compress_log_size=%u",
1894 F2FS_OPTION(sbi).compress_log_size);
1895
1896 for (i = 0; i < F2FS_OPTION(sbi).compress_ext_cnt; i++) {
1897 seq_printf(seq, ",compress_extension=%s",
1898 F2FS_OPTION(sbi).extensions[i]);
1899 }
1900
1901 for (i = 0; i < F2FS_OPTION(sbi).nocompress_ext_cnt; i++) {
1902 seq_printf(seq, ",nocompress_extension=%s",
1903 F2FS_OPTION(sbi).noextensions[i]);
1904 }
1905
1906 if (F2FS_OPTION(sbi).compress_chksum)
1907 seq_puts(seq, ",compress_chksum");
1908
1909 if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_FS)
1910 seq_printf(seq, ",compress_mode=%s", "fs");
1911 else if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_USER)
1912 seq_printf(seq, ",compress_mode=%s", "user");
1913
1914 if (test_opt(sbi, COMPRESS_CACHE))
1915 seq_puts(seq, ",compress_cache");
1916 }
1917 #endif
1918
f2fs_show_options(struct seq_file * seq,struct dentry * root)1919 static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
1920 {
1921 struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb);
1922
1923 if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_SYNC)
1924 seq_printf(seq, ",background_gc=%s", "sync");
1925 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_ON)
1926 seq_printf(seq, ",background_gc=%s", "on");
1927 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF)
1928 seq_printf(seq, ",background_gc=%s", "off");
1929
1930 if (test_opt(sbi, GC_MERGE))
1931 seq_puts(seq, ",gc_merge");
1932
1933 if (test_opt(sbi, DISABLE_ROLL_FORWARD))
1934 seq_puts(seq, ",disable_roll_forward");
1935 if (test_opt(sbi, NORECOVERY))
1936 seq_puts(seq, ",norecovery");
1937 if (test_opt(sbi, DISCARD))
1938 seq_puts(seq, ",discard");
1939 else
1940 seq_puts(seq, ",nodiscard");
1941 if (test_opt(sbi, NOHEAP))
1942 seq_puts(seq, ",no_heap");
1943 else
1944 seq_puts(seq, ",heap");
1945 #ifdef CONFIG_F2FS_FS_XATTR
1946 if (test_opt(sbi, XATTR_USER))
1947 seq_puts(seq, ",user_xattr");
1948 else
1949 seq_puts(seq, ",nouser_xattr");
1950 if (test_opt(sbi, INLINE_XATTR))
1951 seq_puts(seq, ",inline_xattr");
1952 else
1953 seq_puts(seq, ",noinline_xattr");
1954 if (test_opt(sbi, INLINE_XATTR_SIZE))
1955 seq_printf(seq, ",inline_xattr_size=%u",
1956 F2FS_OPTION(sbi).inline_xattr_size);
1957 #endif
1958 #ifdef CONFIG_F2FS_FS_POSIX_ACL
1959 if (test_opt(sbi, POSIX_ACL))
1960 seq_puts(seq, ",acl");
1961 else
1962 seq_puts(seq, ",noacl");
1963 #endif
1964 if (test_opt(sbi, DISABLE_EXT_IDENTIFY))
1965 seq_puts(seq, ",disable_ext_identify");
1966 if (test_opt(sbi, INLINE_DATA))
1967 seq_puts(seq, ",inline_data");
1968 else
1969 seq_puts(seq, ",noinline_data");
1970 if (test_opt(sbi, INLINE_DENTRY))
1971 seq_puts(seq, ",inline_dentry");
1972 else
1973 seq_puts(seq, ",noinline_dentry");
1974 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE))
1975 seq_puts(seq, ",flush_merge");
1976 if (test_opt(sbi, NOBARRIER))
1977 seq_puts(seq, ",nobarrier");
1978 if (test_opt(sbi, FASTBOOT))
1979 seq_puts(seq, ",fastboot");
1980 if (test_opt(sbi, EXTENT_CACHE))
1981 seq_puts(seq, ",extent_cache");
1982 else
1983 seq_puts(seq, ",noextent_cache");
1984 if (test_opt(sbi, DATA_FLUSH))
1985 seq_puts(seq, ",data_flush");
1986
1987 seq_puts(seq, ",mode=");
1988 if (F2FS_OPTION(sbi).fs_mode == FS_MODE_ADAPTIVE)
1989 seq_puts(seq, "adaptive");
1990 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_LFS)
1991 seq_puts(seq, "lfs");
1992 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_SEG)
1993 seq_puts(seq, "fragment:segment");
1994 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_BLK)
1995 seq_puts(seq, "fragment:block");
1996 seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs);
1997 if (test_opt(sbi, RESERVE_ROOT))
1998 seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u",
1999 F2FS_OPTION(sbi).root_reserved_blocks,
2000 from_kuid_munged(&init_user_ns,
2001 F2FS_OPTION(sbi).s_resuid),
2002 from_kgid_munged(&init_user_ns,
2003 F2FS_OPTION(sbi).s_resgid));
2004 if (F2FS_IO_SIZE_BITS(sbi))
2005 seq_printf(seq, ",io_bits=%u",
2006 F2FS_OPTION(sbi).write_io_size_bits);
2007 #ifdef CONFIG_F2FS_FAULT_INJECTION
2008 if (test_opt(sbi, FAULT_INJECTION)) {
2009 seq_printf(seq, ",fault_injection=%u",
2010 F2FS_OPTION(sbi).fault_info.inject_rate);
2011 seq_printf(seq, ",fault_type=%u",
2012 F2FS_OPTION(sbi).fault_info.inject_type);
2013 }
2014 #endif
2015 #ifdef CONFIG_QUOTA
2016 if (test_opt(sbi, QUOTA))
2017 seq_puts(seq, ",quota");
2018 if (test_opt(sbi, USRQUOTA))
2019 seq_puts(seq, ",usrquota");
2020 if (test_opt(sbi, GRPQUOTA))
2021 seq_puts(seq, ",grpquota");
2022 if (test_opt(sbi, PRJQUOTA))
2023 seq_puts(seq, ",prjquota");
2024 #endif
2025 f2fs_show_quota_options(seq, sbi->sb);
2026 if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER)
2027 seq_printf(seq, ",whint_mode=%s", "user-based");
2028 else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS)
2029 seq_printf(seq, ",whint_mode=%s", "fs-based");
2030
2031 fscrypt_show_test_dummy_encryption(seq, ',', sbi->sb);
2032
2033 if (sbi->sb->s_flags & SB_INLINECRYPT)
2034 seq_puts(seq, ",inlinecrypt");
2035
2036 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT)
2037 seq_printf(seq, ",alloc_mode=%s", "default");
2038 else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE)
2039 seq_printf(seq, ",alloc_mode=%s", "reuse");
2040
2041 if (test_opt(sbi, DISABLE_CHECKPOINT))
2042 seq_printf(seq, ",checkpoint=disable:%u",
2043 F2FS_OPTION(sbi).unusable_cap);
2044 if (test_opt(sbi, MERGE_CHECKPOINT))
2045 seq_puts(seq, ",checkpoint_merge");
2046 else
2047 seq_puts(seq, ",nocheckpoint_merge");
2048 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX)
2049 seq_printf(seq, ",fsync_mode=%s", "posix");
2050 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT)
2051 seq_printf(seq, ",fsync_mode=%s", "strict");
2052 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER)
2053 seq_printf(seq, ",fsync_mode=%s", "nobarrier");
2054
2055 #ifdef CONFIG_F2FS_FS_COMPRESSION
2056 f2fs_show_compress_options(seq, sbi->sb);
2057 #endif
2058
2059 if (test_opt(sbi, ATGC))
2060 seq_puts(seq, ",atgc");
2061
2062 if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_BLOCK)
2063 seq_printf(seq, ",discard_unit=%s", "block");
2064 else if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SEGMENT)
2065 seq_printf(seq, ",discard_unit=%s", "segment");
2066 else if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SECTION)
2067 seq_printf(seq, ",discard_unit=%s", "section");
2068
2069 if (F2FS_OPTION(sbi).memory_mode == MEMORY_MODE_NORMAL)
2070 seq_printf(seq, ",memory=%s", "normal");
2071 else if (F2FS_OPTION(sbi).memory_mode == MEMORY_MODE_LOW)
2072 seq_printf(seq, ",memory=%s", "low");
2073
2074 return 0;
2075 }
2076
default_options(struct f2fs_sb_info * sbi)2077 static void default_options(struct f2fs_sb_info *sbi)
2078 {
2079 /* init some FS parameters */
2080 if (f2fs_sb_has_readonly(sbi))
2081 F2FS_OPTION(sbi).active_logs = NR_CURSEG_RO_TYPE;
2082 else
2083 F2FS_OPTION(sbi).active_logs = NR_CURSEG_PERSIST_TYPE;
2084
2085 F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
2086 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
2087 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
2088 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
2089 F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID);
2090 F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID);
2091 F2FS_OPTION(sbi).compress_algorithm = COMPRESS_LZ4;
2092 F2FS_OPTION(sbi).compress_log_size = MIN_COMPRESS_LOG_SIZE;
2093 F2FS_OPTION(sbi).compress_ext_cnt = 0;
2094 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS;
2095 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON;
2096 F2FS_OPTION(sbi).memory_mode = MEMORY_MODE_NORMAL;
2097
2098 sbi->sb->s_flags &= ~SB_INLINECRYPT;
2099
2100 set_opt(sbi, INLINE_XATTR);
2101 set_opt(sbi, INLINE_DATA);
2102 set_opt(sbi, INLINE_DENTRY);
2103 set_opt(sbi, EXTENT_CACHE);
2104 set_opt(sbi, NOHEAP);
2105 clear_opt(sbi, DISABLE_CHECKPOINT);
2106 set_opt(sbi, MERGE_CHECKPOINT);
2107 F2FS_OPTION(sbi).unusable_cap = 0;
2108 sbi->sb->s_flags |= SB_LAZYTIME;
2109 set_opt(sbi, FLUSH_MERGE);
2110 if (f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi))
2111 set_opt(sbi, DISCARD);
2112 if (f2fs_sb_has_blkzoned(sbi)) {
2113 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS;
2114 F2FS_OPTION(sbi).discard_unit = DISCARD_UNIT_SECTION;
2115 } else {
2116 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE;
2117 F2FS_OPTION(sbi).discard_unit = DISCARD_UNIT_BLOCK;
2118 }
2119
2120 #ifdef CONFIG_F2FS_FS_XATTR
2121 set_opt(sbi, XATTR_USER);
2122 #endif
2123 #ifdef CONFIG_F2FS_FS_POSIX_ACL
2124 set_opt(sbi, POSIX_ACL);
2125 #endif
2126
2127 f2fs_build_fault_attr(sbi, 0, 0);
2128 }
2129
2130 #ifdef CONFIG_QUOTA
2131 static int f2fs_enable_quotas(struct super_block *sb);
2132 #endif
2133
f2fs_disable_checkpoint(struct f2fs_sb_info * sbi)2134 static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi)
2135 {
2136 unsigned int s_flags = sbi->sb->s_flags;
2137 struct cp_control cpc;
2138 unsigned int gc_mode = sbi->gc_mode;
2139 int err = 0;
2140 int ret;
2141 block_t unusable;
2142
2143 if (s_flags & SB_RDONLY) {
2144 f2fs_err(sbi, "checkpoint=disable on readonly fs");
2145 return -EINVAL;
2146 }
2147 sbi->sb->s_flags |= SB_ACTIVE;
2148
2149 /* check if we need more GC first */
2150 unusable = f2fs_get_unusable_blocks(sbi);
2151 if (!f2fs_disable_cp_again(sbi, unusable))
2152 goto skip_gc;
2153
2154 f2fs_update_time(sbi, DISABLE_TIME);
2155
2156 sbi->gc_mode = GC_URGENT_HIGH;
2157
2158 while (!f2fs_time_over(sbi, DISABLE_TIME)) {
2159 f2fs_down_write(&sbi->gc_lock);
2160 err = f2fs_gc(sbi, true, false, false, NULL_SEGNO);
2161 if (err == -ENODATA) {
2162 err = 0;
2163 break;
2164 }
2165 if (err && err != -EAGAIN)
2166 break;
2167 }
2168
2169 ret = sync_filesystem(sbi->sb);
2170 if (ret || err) {
2171 err = ret ? ret : err;
2172 goto restore_flag;
2173 }
2174
2175 unusable = f2fs_get_unusable_blocks(sbi);
2176 if (f2fs_disable_cp_again(sbi, unusable)) {
2177 err = -EAGAIN;
2178 goto restore_flag;
2179 }
2180
2181 skip_gc:
2182 f2fs_down_write(&sbi->gc_lock);
2183 cpc.reason = CP_PAUSE;
2184 set_sbi_flag(sbi, SBI_CP_DISABLED);
2185 err = f2fs_write_checkpoint(sbi, &cpc);
2186 if (err)
2187 goto out_unlock;
2188
2189 spin_lock(&sbi->stat_lock);
2190 sbi->unusable_block_count = unusable;
2191 spin_unlock(&sbi->stat_lock);
2192
2193 out_unlock:
2194 f2fs_up_write(&sbi->gc_lock);
2195 restore_flag:
2196 sbi->gc_mode = gc_mode;
2197 sbi->sb->s_flags = s_flags; /* Restore SB_RDONLY status */
2198 return err;
2199 }
2200
f2fs_enable_checkpoint(struct f2fs_sb_info * sbi)2201 static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi)
2202 {
2203 int retry = DEFAULT_RETRY_IO_COUNT;
2204
2205 /* we should flush all the data to keep data consistency */
2206 do {
2207 sync_inodes_sb(sbi->sb);
2208 f2fs_io_schedule_timeout(DEFAULT_IO_TIMEOUT);
2209 } while (get_pages(sbi, F2FS_DIRTY_DATA) && retry--);
2210
2211 if (unlikely(retry < 0))
2212 f2fs_warn(sbi, "checkpoint=enable has some unwritten data.");
2213
2214 f2fs_down_write(&sbi->gc_lock);
2215 f2fs_dirty_to_prefree(sbi);
2216
2217 clear_sbi_flag(sbi, SBI_CP_DISABLED);
2218 set_sbi_flag(sbi, SBI_IS_DIRTY);
2219 f2fs_up_write(&sbi->gc_lock);
2220
2221 f2fs_sync_fs(sbi->sb, 1);
2222
2223 /* Let's ensure there's no pending checkpoint anymore */
2224 f2fs_flush_ckpt_thread(sbi);
2225 }
2226
f2fs_remount(struct super_block * sb,int * flags,char * data)2227 static int f2fs_remount(struct super_block *sb, int *flags, char *data)
2228 {
2229 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2230 struct f2fs_mount_info org_mount_opt;
2231 unsigned long old_sb_flags;
2232 int err;
2233 bool need_restart_gc = false, need_stop_gc = false;
2234 bool need_restart_ckpt = false, need_stop_ckpt = false;
2235 bool need_restart_flush = false, need_stop_flush = false;
2236 bool need_restart_discard = false, need_stop_discard = false;
2237 bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE);
2238 bool enable_checkpoint = !test_opt(sbi, DISABLE_CHECKPOINT);
2239 bool no_io_align = !F2FS_IO_ALIGNED(sbi);
2240 bool no_atgc = !test_opt(sbi, ATGC);
2241 bool no_discard = !test_opt(sbi, DISCARD);
2242 bool no_compress_cache = !test_opt(sbi, COMPRESS_CACHE);
2243 bool block_unit_discard = f2fs_block_unit_discard(sbi);
2244 struct discard_cmd_control *dcc;
2245 #ifdef CONFIG_QUOTA
2246 int i, j;
2247 #endif
2248
2249 /*
2250 * Save the old mount options in case we
2251 * need to restore them.
2252 */
2253 org_mount_opt = sbi->mount_opt;
2254 old_sb_flags = sb->s_flags;
2255
2256 #ifdef CONFIG_QUOTA
2257 org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt;
2258 for (i = 0; i < MAXQUOTAS; i++) {
2259 if (F2FS_OPTION(sbi).s_qf_names[i]) {
2260 org_mount_opt.s_qf_names[i] =
2261 kstrdup(F2FS_OPTION(sbi).s_qf_names[i],
2262 GFP_KERNEL);
2263 if (!org_mount_opt.s_qf_names[i]) {
2264 for (j = 0; j < i; j++)
2265 kfree(org_mount_opt.s_qf_names[j]);
2266 return -ENOMEM;
2267 }
2268 } else {
2269 org_mount_opt.s_qf_names[i] = NULL;
2270 }
2271 }
2272 #endif
2273
2274 /* recover superblocks we couldn't write due to previous RO mount */
2275 if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) {
2276 err = f2fs_commit_super(sbi, false);
2277 f2fs_info(sbi, "Try to recover all the superblocks, ret: %d",
2278 err);
2279 if (!err)
2280 clear_sbi_flag(sbi, SBI_NEED_SB_WRITE);
2281 }
2282
2283 default_options(sbi);
2284
2285 /* parse mount options */
2286 err = parse_options(sb, data, true);
2287 if (err)
2288 goto restore_opts;
2289
2290 /*
2291 * Previous and new state of filesystem is RO,
2292 * so skip checking GC and FLUSH_MERGE conditions.
2293 */
2294 if (f2fs_readonly(sb) && (*flags & SB_RDONLY))
2295 goto skip;
2296
2297 if (f2fs_dev_is_readonly(sbi) && !(*flags & SB_RDONLY)) {
2298 err = -EROFS;
2299 goto restore_opts;
2300 }
2301
2302 #ifdef CONFIG_QUOTA
2303 if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) {
2304 err = dquot_suspend(sb, -1);
2305 if (err < 0)
2306 goto restore_opts;
2307 } else if (f2fs_readonly(sb) && !(*flags & SB_RDONLY)) {
2308 /* dquot_resume needs RW */
2309 sb->s_flags &= ~SB_RDONLY;
2310 if (sb_any_quota_suspended(sb)) {
2311 dquot_resume(sb, -1);
2312 } else if (f2fs_sb_has_quota_ino(sbi)) {
2313 err = f2fs_enable_quotas(sb);
2314 if (err)
2315 goto restore_opts;
2316 }
2317 }
2318 #endif
2319 /* disallow enable atgc dynamically */
2320 if (no_atgc == !!test_opt(sbi, ATGC)) {
2321 err = -EINVAL;
2322 f2fs_warn(sbi, "switch atgc option is not allowed");
2323 goto restore_opts;
2324 }
2325
2326 /* disallow enable/disable extent_cache dynamically */
2327 if (no_extent_cache == !!test_opt(sbi, EXTENT_CACHE)) {
2328 err = -EINVAL;
2329 f2fs_warn(sbi, "switch extent_cache option is not allowed");
2330 goto restore_opts;
2331 }
2332
2333 if (no_io_align == !!F2FS_IO_ALIGNED(sbi)) {
2334 err = -EINVAL;
2335 f2fs_warn(sbi, "switch io_bits option is not allowed");
2336 goto restore_opts;
2337 }
2338
2339 if (no_compress_cache == !!test_opt(sbi, COMPRESS_CACHE)) {
2340 err = -EINVAL;
2341 f2fs_warn(sbi, "switch compress_cache option is not allowed");
2342 goto restore_opts;
2343 }
2344
2345 if (block_unit_discard != f2fs_block_unit_discard(sbi)) {
2346 err = -EINVAL;
2347 f2fs_warn(sbi, "switch discard_unit option is not allowed");
2348 goto restore_opts;
2349 }
2350
2351 if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) {
2352 err = -EINVAL;
2353 f2fs_warn(sbi, "disabling checkpoint not compatible with read-only");
2354 goto restore_opts;
2355 }
2356
2357 /*
2358 * We stop the GC thread if FS is mounted as RO
2359 * or if background_gc = off is passed in mount
2360 * option. Also sync the filesystem.
2361 */
2362 if ((*flags & SB_RDONLY) ||
2363 (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF &&
2364 !test_opt(sbi, GC_MERGE))) {
2365 if (sbi->gc_thread) {
2366 f2fs_stop_gc_thread(sbi);
2367 need_restart_gc = true;
2368 }
2369 } else if (!sbi->gc_thread) {
2370 err = f2fs_start_gc_thread(sbi);
2371 if (err)
2372 goto restore_opts;
2373 need_stop_gc = true;
2374 }
2375
2376 if (*flags & SB_RDONLY ||
2377 F2FS_OPTION(sbi).whint_mode != org_mount_opt.whint_mode) {
2378 sync_inodes_sb(sb);
2379
2380 set_sbi_flag(sbi, SBI_IS_DIRTY);
2381 set_sbi_flag(sbi, SBI_IS_CLOSE);
2382 f2fs_sync_fs(sb, 1);
2383 clear_sbi_flag(sbi, SBI_IS_CLOSE);
2384 }
2385
2386 if ((*flags & SB_RDONLY) || test_opt(sbi, DISABLE_CHECKPOINT) ||
2387 !test_opt(sbi, MERGE_CHECKPOINT)) {
2388 f2fs_stop_ckpt_thread(sbi);
2389 need_restart_ckpt = true;
2390 } else {
2391 /* Flush if the prevous checkpoint, if exists. */
2392 f2fs_flush_ckpt_thread(sbi);
2393
2394 err = f2fs_start_ckpt_thread(sbi);
2395 if (err) {
2396 f2fs_err(sbi,
2397 "Failed to start F2FS issue_checkpoint_thread (%d)",
2398 err);
2399 goto restore_gc;
2400 }
2401 need_stop_ckpt = true;
2402 }
2403
2404 /*
2405 * We stop issue flush thread if FS is mounted as RO
2406 * or if flush_merge is not passed in mount option.
2407 */
2408 if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) {
2409 clear_opt(sbi, FLUSH_MERGE);
2410 f2fs_destroy_flush_cmd_control(sbi, false);
2411 need_restart_flush = true;
2412 } else {
2413 err = f2fs_create_flush_cmd_control(sbi);
2414 if (err)
2415 goto restore_ckpt;
2416 need_stop_flush = true;
2417 }
2418
2419 if (no_discard == !!test_opt(sbi, DISCARD)) {
2420 if (test_opt(sbi, DISCARD)) {
2421 err = f2fs_start_discard_thread(sbi);
2422 if (err)
2423 goto restore_flush;
2424 need_stop_discard = true;
2425 } else {
2426 dcc = SM_I(sbi)->dcc_info;
2427 f2fs_stop_discard_thread(sbi);
2428 if (atomic_read(&dcc->discard_cmd_cnt))
2429 f2fs_issue_discard_timeout(sbi);
2430 need_restart_discard = true;
2431 }
2432 }
2433
2434 if (enable_checkpoint == !!test_opt(sbi, DISABLE_CHECKPOINT)) {
2435 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
2436 err = f2fs_disable_checkpoint(sbi);
2437 if (err)
2438 goto restore_discard;
2439 } else {
2440 f2fs_enable_checkpoint(sbi);
2441 }
2442 }
2443
2444 skip:
2445 #ifdef CONFIG_QUOTA
2446 /* Release old quota file names */
2447 for (i = 0; i < MAXQUOTAS; i++)
2448 kfree(org_mount_opt.s_qf_names[i]);
2449 #endif
2450 /* Update the POSIXACL Flag */
2451 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
2452 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
2453
2454 limit_reserve_root(sbi);
2455 adjust_unusable_cap_perc(sbi);
2456 *flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME);
2457 return 0;
2458 restore_discard:
2459 if (need_restart_discard) {
2460 if (f2fs_start_discard_thread(sbi))
2461 f2fs_warn(sbi, "discard has been stopped");
2462 } else if (need_stop_discard) {
2463 f2fs_stop_discard_thread(sbi);
2464 }
2465 restore_flush:
2466 if (need_restart_flush) {
2467 if (f2fs_create_flush_cmd_control(sbi))
2468 f2fs_warn(sbi, "background flush thread has stopped");
2469 } else if (need_stop_flush) {
2470 clear_opt(sbi, FLUSH_MERGE);
2471 f2fs_destroy_flush_cmd_control(sbi, false);
2472 }
2473 restore_ckpt:
2474 if (need_restart_ckpt) {
2475 if (f2fs_start_ckpt_thread(sbi))
2476 f2fs_warn(sbi, "background ckpt thread has stopped");
2477 } else if (need_stop_ckpt) {
2478 f2fs_stop_ckpt_thread(sbi);
2479 }
2480 restore_gc:
2481 if (need_restart_gc) {
2482 if (f2fs_start_gc_thread(sbi))
2483 f2fs_warn(sbi, "background gc thread has stopped");
2484 } else if (need_stop_gc) {
2485 f2fs_stop_gc_thread(sbi);
2486 }
2487 restore_opts:
2488 #ifdef CONFIG_QUOTA
2489 F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt;
2490 for (i = 0; i < MAXQUOTAS; i++) {
2491 kfree(F2FS_OPTION(sbi).s_qf_names[i]);
2492 F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i];
2493 }
2494 #endif
2495 sbi->mount_opt = org_mount_opt;
2496 sb->s_flags = old_sb_flags;
2497 return err;
2498 }
2499
2500 #ifdef CONFIG_QUOTA
2501 /* Read data from quotafile */
f2fs_quota_read(struct super_block * sb,int type,char * data,size_t len,loff_t off)2502 static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data,
2503 size_t len, loff_t off)
2504 {
2505 struct inode *inode = sb_dqopt(sb)->files[type];
2506 struct address_space *mapping = inode->i_mapping;
2507 block_t blkidx = F2FS_BYTES_TO_BLK(off);
2508 int offset = off & (sb->s_blocksize - 1);
2509 int tocopy;
2510 size_t toread;
2511 loff_t i_size = i_size_read(inode);
2512 struct page *page;
2513
2514 if (off > i_size)
2515 return 0;
2516
2517 if (off + len > i_size)
2518 len = i_size - off;
2519 toread = len;
2520 while (toread > 0) {
2521 tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread);
2522 repeat:
2523 page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS);
2524 if (IS_ERR(page)) {
2525 if (PTR_ERR(page) == -ENOMEM) {
2526 congestion_wait(BLK_RW_ASYNC,
2527 DEFAULT_IO_TIMEOUT);
2528 goto repeat;
2529 }
2530 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2531 return PTR_ERR(page);
2532 }
2533
2534 lock_page(page);
2535
2536 if (unlikely(page->mapping != mapping)) {
2537 f2fs_put_page(page, 1);
2538 goto repeat;
2539 }
2540 if (unlikely(!PageUptodate(page))) {
2541 f2fs_put_page(page, 1);
2542 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2543 return -EIO;
2544 }
2545
2546 memcpy_from_page(data, page, offset, tocopy);
2547 f2fs_put_page(page, 1);
2548
2549 offset = 0;
2550 toread -= tocopy;
2551 data += tocopy;
2552 blkidx++;
2553 }
2554 return len;
2555 }
2556
2557 /* Write to quotafile */
f2fs_quota_write(struct super_block * sb,int type,const char * data,size_t len,loff_t off)2558 static ssize_t f2fs_quota_write(struct super_block *sb, int type,
2559 const char *data, size_t len, loff_t off)
2560 {
2561 struct inode *inode = sb_dqopt(sb)->files[type];
2562 struct address_space *mapping = inode->i_mapping;
2563 const struct address_space_operations *a_ops = mapping->a_ops;
2564 int offset = off & (sb->s_blocksize - 1);
2565 size_t towrite = len;
2566 struct page *page;
2567 void *fsdata = NULL;
2568 int err = 0;
2569 int tocopy;
2570
2571 while (towrite > 0) {
2572 tocopy = min_t(unsigned long, sb->s_blocksize - offset,
2573 towrite);
2574 retry:
2575 err = a_ops->write_begin(NULL, mapping, off, tocopy, 0,
2576 &page, &fsdata);
2577 if (unlikely(err)) {
2578 if (err == -ENOMEM) {
2579 f2fs_io_schedule_timeout(DEFAULT_IO_TIMEOUT);
2580 goto retry;
2581 }
2582 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2583 break;
2584 }
2585
2586 memcpy_to_page(page, offset, data, tocopy);
2587
2588 a_ops->write_end(NULL, mapping, off, tocopy, tocopy,
2589 page, fsdata);
2590 offset = 0;
2591 towrite -= tocopy;
2592 off += tocopy;
2593 data += tocopy;
2594 cond_resched();
2595 }
2596
2597 if (len == towrite)
2598 return err;
2599 inode->i_mtime = inode->i_ctime = current_time(inode);
2600 f2fs_mark_inode_dirty_sync(inode, false);
2601 return len - towrite;
2602 }
2603
f2fs_dquot_initialize(struct inode * inode)2604 int f2fs_dquot_initialize(struct inode *inode)
2605 {
2606 if (time_to_inject(F2FS_I_SB(inode), FAULT_DQUOT_INIT)) {
2607 f2fs_show_injection_info(F2FS_I_SB(inode), FAULT_DQUOT_INIT);
2608 return -ESRCH;
2609 }
2610
2611 return dquot_initialize(inode);
2612 }
2613
f2fs_get_dquots(struct inode * inode)2614 static struct dquot **f2fs_get_dquots(struct inode *inode)
2615 {
2616 return F2FS_I(inode)->i_dquot;
2617 }
2618
f2fs_get_reserved_space(struct inode * inode)2619 static qsize_t *f2fs_get_reserved_space(struct inode *inode)
2620 {
2621 return &F2FS_I(inode)->i_reserved_quota;
2622 }
2623
f2fs_quota_on_mount(struct f2fs_sb_info * sbi,int type)2624 static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type)
2625 {
2626 if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) {
2627 f2fs_err(sbi, "quota sysfile may be corrupted, skip loading it");
2628 return 0;
2629 }
2630
2631 return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type],
2632 F2FS_OPTION(sbi).s_jquota_fmt, type);
2633 }
2634
f2fs_enable_quota_files(struct f2fs_sb_info * sbi,bool rdonly)2635 int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly)
2636 {
2637 int enabled = 0;
2638 int i, err;
2639
2640 if (f2fs_sb_has_quota_ino(sbi) && rdonly) {
2641 err = f2fs_enable_quotas(sbi->sb);
2642 if (err) {
2643 f2fs_err(sbi, "Cannot turn on quota_ino: %d", err);
2644 return 0;
2645 }
2646 return 1;
2647 }
2648
2649 for (i = 0; i < MAXQUOTAS; i++) {
2650 if (F2FS_OPTION(sbi).s_qf_names[i]) {
2651 err = f2fs_quota_on_mount(sbi, i);
2652 if (!err) {
2653 enabled = 1;
2654 continue;
2655 }
2656 f2fs_err(sbi, "Cannot turn on quotas: %d on %d",
2657 err, i);
2658 }
2659 }
2660 return enabled;
2661 }
2662
f2fs_quota_enable(struct super_block * sb,int type,int format_id,unsigned int flags)2663 static int f2fs_quota_enable(struct super_block *sb, int type, int format_id,
2664 unsigned int flags)
2665 {
2666 struct inode *qf_inode;
2667 unsigned long qf_inum;
2668 int err;
2669
2670 BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb)));
2671
2672 qf_inum = f2fs_qf_ino(sb, type);
2673 if (!qf_inum)
2674 return -EPERM;
2675
2676 qf_inode = f2fs_iget(sb, qf_inum);
2677 if (IS_ERR(qf_inode)) {
2678 f2fs_err(F2FS_SB(sb), "Bad quota inode %u:%lu", type, qf_inum);
2679 return PTR_ERR(qf_inode);
2680 }
2681
2682 /* Don't account quota for quota files to avoid recursion */
2683 qf_inode->i_flags |= S_NOQUOTA;
2684 err = dquot_load_quota_inode(qf_inode, type, format_id, flags);
2685 iput(qf_inode);
2686 return err;
2687 }
2688
f2fs_enable_quotas(struct super_block * sb)2689 static int f2fs_enable_quotas(struct super_block *sb)
2690 {
2691 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2692 int type, err = 0;
2693 unsigned long qf_inum;
2694 bool quota_mopt[MAXQUOTAS] = {
2695 test_opt(sbi, USRQUOTA),
2696 test_opt(sbi, GRPQUOTA),
2697 test_opt(sbi, PRJQUOTA),
2698 };
2699
2700 if (is_set_ckpt_flags(F2FS_SB(sb), CP_QUOTA_NEED_FSCK_FLAG)) {
2701 f2fs_err(sbi, "quota file may be corrupted, skip loading it");
2702 return 0;
2703 }
2704
2705 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE;
2706
2707 for (type = 0; type < MAXQUOTAS; type++) {
2708 qf_inum = f2fs_qf_ino(sb, type);
2709 if (qf_inum) {
2710 err = f2fs_quota_enable(sb, type, QFMT_VFS_V1,
2711 DQUOT_USAGE_ENABLED |
2712 (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0));
2713 if (err) {
2714 f2fs_err(sbi, "Failed to enable quota tracking (type=%d, err=%d). Please run fsck to fix.",
2715 type, err);
2716 for (type--; type >= 0; type--)
2717 dquot_quota_off(sb, type);
2718 set_sbi_flag(F2FS_SB(sb),
2719 SBI_QUOTA_NEED_REPAIR);
2720 return err;
2721 }
2722 }
2723 }
2724 return 0;
2725 }
2726
f2fs_quota_sync_file(struct f2fs_sb_info * sbi,int type)2727 static int f2fs_quota_sync_file(struct f2fs_sb_info *sbi, int type)
2728 {
2729 struct quota_info *dqopt = sb_dqopt(sbi->sb);
2730 struct address_space *mapping = dqopt->files[type]->i_mapping;
2731 int ret = 0;
2732
2733 ret = dquot_writeback_dquots(sbi->sb, type);
2734 if (ret)
2735 goto out;
2736
2737 ret = filemap_fdatawrite(mapping);
2738 if (ret)
2739 goto out;
2740
2741 /* if we are using journalled quota */
2742 if (is_journalled_quota(sbi))
2743 goto out;
2744
2745 ret = filemap_fdatawait(mapping);
2746
2747 truncate_inode_pages(&dqopt->files[type]->i_data, 0);
2748 out:
2749 if (ret)
2750 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2751 return ret;
2752 }
2753
f2fs_quota_sync(struct super_block * sb,int type)2754 int f2fs_quota_sync(struct super_block *sb, int type)
2755 {
2756 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2757 struct quota_info *dqopt = sb_dqopt(sb);
2758 int cnt;
2759 int ret = 0;
2760
2761 /*
2762 * Now when everything is written we can discard the pagecache so
2763 * that userspace sees the changes.
2764 */
2765 for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
2766
2767 if (type != -1 && cnt != type)
2768 continue;
2769
2770 if (!sb_has_quota_active(sb, cnt))
2771 continue;
2772
2773 if (!f2fs_sb_has_quota_ino(sbi))
2774 inode_lock(dqopt->files[cnt]);
2775
2776 /*
2777 * do_quotactl
2778 * f2fs_quota_sync
2779 * f2fs_down_read(quota_sem)
2780 * dquot_writeback_dquots()
2781 * f2fs_dquot_commit
2782 * block_operation
2783 * f2fs_down_read(quota_sem)
2784 */
2785 f2fs_lock_op(sbi);
2786 f2fs_down_read(&sbi->quota_sem);
2787
2788 ret = f2fs_quota_sync_file(sbi, cnt);
2789
2790 f2fs_up_read(&sbi->quota_sem);
2791 f2fs_unlock_op(sbi);
2792
2793 if (!f2fs_sb_has_quota_ino(sbi))
2794 inode_unlock(dqopt->files[cnt]);
2795
2796 if (ret)
2797 break;
2798 }
2799 return ret;
2800 }
2801
f2fs_quota_on(struct super_block * sb,int type,int format_id,const struct path * path)2802 static int f2fs_quota_on(struct super_block *sb, int type, int format_id,
2803 const struct path *path)
2804 {
2805 struct inode *inode;
2806 int err;
2807
2808 /* if quota sysfile exists, deny enabling quota with specific file */
2809 if (f2fs_sb_has_quota_ino(F2FS_SB(sb))) {
2810 f2fs_err(F2FS_SB(sb), "quota sysfile already exists");
2811 return -EBUSY;
2812 }
2813
2814 err = f2fs_quota_sync(sb, type);
2815 if (err)
2816 return err;
2817
2818 err = dquot_quota_on(sb, type, format_id, path);
2819 if (err)
2820 return err;
2821
2822 inode = d_inode(path->dentry);
2823
2824 inode_lock(inode);
2825 F2FS_I(inode)->i_flags |= F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL;
2826 f2fs_set_inode_flags(inode);
2827 inode_unlock(inode);
2828 f2fs_mark_inode_dirty_sync(inode, false);
2829
2830 return 0;
2831 }
2832
__f2fs_quota_off(struct super_block * sb,int type)2833 static int __f2fs_quota_off(struct super_block *sb, int type)
2834 {
2835 struct inode *inode = sb_dqopt(sb)->files[type];
2836 int err;
2837
2838 if (!inode || !igrab(inode))
2839 return dquot_quota_off(sb, type);
2840
2841 err = f2fs_quota_sync(sb, type);
2842 if (err)
2843 goto out_put;
2844
2845 err = dquot_quota_off(sb, type);
2846 if (err || f2fs_sb_has_quota_ino(F2FS_SB(sb)))
2847 goto out_put;
2848
2849 inode_lock(inode);
2850 F2FS_I(inode)->i_flags &= ~(F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL);
2851 f2fs_set_inode_flags(inode);
2852 inode_unlock(inode);
2853 f2fs_mark_inode_dirty_sync(inode, false);
2854 out_put:
2855 iput(inode);
2856 return err;
2857 }
2858
f2fs_quota_off(struct super_block * sb,int type)2859 static int f2fs_quota_off(struct super_block *sb, int type)
2860 {
2861 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2862 int err;
2863
2864 err = __f2fs_quota_off(sb, type);
2865
2866 /*
2867 * quotactl can shutdown journalled quota, result in inconsistence
2868 * between quota record and fs data by following updates, tag the
2869 * flag to let fsck be aware of it.
2870 */
2871 if (is_journalled_quota(sbi))
2872 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2873 return err;
2874 }
2875
f2fs_quota_off_umount(struct super_block * sb)2876 void f2fs_quota_off_umount(struct super_block *sb)
2877 {
2878 int type;
2879 int err;
2880
2881 for (type = 0; type < MAXQUOTAS; type++) {
2882 err = __f2fs_quota_off(sb, type);
2883 if (err) {
2884 int ret = dquot_quota_off(sb, type);
2885
2886 f2fs_err(F2FS_SB(sb), "Fail to turn off disk quota (type: %d, err: %d, ret:%d), Please run fsck to fix it.",
2887 type, err, ret);
2888 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2889 }
2890 }
2891 /*
2892 * In case of checkpoint=disable, we must flush quota blocks.
2893 * This can cause NULL exception for node_inode in end_io, since
2894 * put_super already dropped it.
2895 */
2896 sync_filesystem(sb);
2897 }
2898
f2fs_truncate_quota_inode_pages(struct super_block * sb)2899 static void f2fs_truncate_quota_inode_pages(struct super_block *sb)
2900 {
2901 struct quota_info *dqopt = sb_dqopt(sb);
2902 int type;
2903
2904 for (type = 0; type < MAXQUOTAS; type++) {
2905 if (!dqopt->files[type])
2906 continue;
2907 f2fs_inode_synced(dqopt->files[type]);
2908 }
2909 }
2910
f2fs_dquot_commit(struct dquot * dquot)2911 static int f2fs_dquot_commit(struct dquot *dquot)
2912 {
2913 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
2914 int ret;
2915
2916 f2fs_down_read_nested(&sbi->quota_sem, SINGLE_DEPTH_NESTING);
2917 ret = dquot_commit(dquot);
2918 if (ret < 0)
2919 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2920 f2fs_up_read(&sbi->quota_sem);
2921 return ret;
2922 }
2923
f2fs_dquot_acquire(struct dquot * dquot)2924 static int f2fs_dquot_acquire(struct dquot *dquot)
2925 {
2926 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
2927 int ret;
2928
2929 f2fs_down_read(&sbi->quota_sem);
2930 ret = dquot_acquire(dquot);
2931 if (ret < 0)
2932 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2933 f2fs_up_read(&sbi->quota_sem);
2934 return ret;
2935 }
2936
f2fs_dquot_release(struct dquot * dquot)2937 static int f2fs_dquot_release(struct dquot *dquot)
2938 {
2939 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
2940 int ret = dquot_release(dquot);
2941
2942 if (ret < 0)
2943 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2944 return ret;
2945 }
2946
f2fs_dquot_mark_dquot_dirty(struct dquot * dquot)2947 static int f2fs_dquot_mark_dquot_dirty(struct dquot *dquot)
2948 {
2949 struct super_block *sb = dquot->dq_sb;
2950 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2951 int ret = dquot_mark_dquot_dirty(dquot);
2952
2953 /* if we are using journalled quota */
2954 if (is_journalled_quota(sbi))
2955 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
2956
2957 return ret;
2958 }
2959
f2fs_dquot_commit_info(struct super_block * sb,int type)2960 static int f2fs_dquot_commit_info(struct super_block *sb, int type)
2961 {
2962 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2963 int ret = dquot_commit_info(sb, type);
2964
2965 if (ret < 0)
2966 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2967 return ret;
2968 }
2969
f2fs_get_projid(struct inode * inode,kprojid_t * projid)2970 static int f2fs_get_projid(struct inode *inode, kprojid_t *projid)
2971 {
2972 *projid = F2FS_I(inode)->i_projid;
2973 return 0;
2974 }
2975
2976 static const struct dquot_operations f2fs_quota_operations = {
2977 .get_reserved_space = f2fs_get_reserved_space,
2978 .write_dquot = f2fs_dquot_commit,
2979 .acquire_dquot = f2fs_dquot_acquire,
2980 .release_dquot = f2fs_dquot_release,
2981 .mark_dirty = f2fs_dquot_mark_dquot_dirty,
2982 .write_info = f2fs_dquot_commit_info,
2983 .alloc_dquot = dquot_alloc,
2984 .destroy_dquot = dquot_destroy,
2985 .get_projid = f2fs_get_projid,
2986 .get_next_id = dquot_get_next_id,
2987 };
2988
2989 static const struct quotactl_ops f2fs_quotactl_ops = {
2990 .quota_on = f2fs_quota_on,
2991 .quota_off = f2fs_quota_off,
2992 .quota_sync = f2fs_quota_sync,
2993 .get_state = dquot_get_state,
2994 .set_info = dquot_set_dqinfo,
2995 .get_dqblk = dquot_get_dqblk,
2996 .set_dqblk = dquot_set_dqblk,
2997 .get_nextdqblk = dquot_get_next_dqblk,
2998 };
2999 #else
f2fs_dquot_initialize(struct inode * inode)3000 int f2fs_dquot_initialize(struct inode *inode)
3001 {
3002 return 0;
3003 }
3004
f2fs_quota_sync(struct super_block * sb,int type)3005 int f2fs_quota_sync(struct super_block *sb, int type)
3006 {
3007 return 0;
3008 }
3009
f2fs_quota_off_umount(struct super_block * sb)3010 void f2fs_quota_off_umount(struct super_block *sb)
3011 {
3012 }
3013 #endif
3014
3015 static const struct super_operations f2fs_sops = {
3016 .alloc_inode = f2fs_alloc_inode,
3017 .free_inode = f2fs_free_inode,
3018 .drop_inode = f2fs_drop_inode,
3019 .write_inode = f2fs_write_inode,
3020 .dirty_inode = f2fs_dirty_inode,
3021 .show_options = f2fs_show_options,
3022 #ifdef CONFIG_QUOTA
3023 .quota_read = f2fs_quota_read,
3024 .quota_write = f2fs_quota_write,
3025 .get_dquots = f2fs_get_dquots,
3026 #endif
3027 .evict_inode = f2fs_evict_inode,
3028 .put_super = f2fs_put_super,
3029 .sync_fs = f2fs_sync_fs,
3030 .freeze_fs = f2fs_freeze,
3031 .unfreeze_fs = f2fs_unfreeze,
3032 .statfs = f2fs_statfs,
3033 .remount_fs = f2fs_remount,
3034 };
3035
3036 #ifdef CONFIG_FS_ENCRYPTION
f2fs_get_context(struct inode * inode,void * ctx,size_t len)3037 static int f2fs_get_context(struct inode *inode, void *ctx, size_t len)
3038 {
3039 return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
3040 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
3041 ctx, len, NULL);
3042 }
3043
f2fs_set_context(struct inode * inode,const void * ctx,size_t len,void * fs_data)3044 static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len,
3045 void *fs_data)
3046 {
3047 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3048
3049 /*
3050 * Encrypting the root directory is not allowed because fsck
3051 * expects lost+found directory to exist and remain unencrypted
3052 * if LOST_FOUND feature is enabled.
3053 *
3054 */
3055 if (f2fs_sb_has_lost_found(sbi) &&
3056 inode->i_ino == F2FS_ROOT_INO(sbi))
3057 return -EPERM;
3058
3059 return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
3060 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
3061 ctx, len, fs_data, XATTR_CREATE);
3062 }
3063
f2fs_get_dummy_policy(struct super_block * sb)3064 static const union fscrypt_policy *f2fs_get_dummy_policy(struct super_block *sb)
3065 {
3066 return F2FS_OPTION(F2FS_SB(sb)).dummy_enc_policy.policy;
3067 }
3068
f2fs_has_stable_inodes(struct super_block * sb)3069 static bool f2fs_has_stable_inodes(struct super_block *sb)
3070 {
3071 return true;
3072 }
3073
f2fs_get_ino_and_lblk_bits(struct super_block * sb,int * ino_bits_ret,int * lblk_bits_ret)3074 static void f2fs_get_ino_and_lblk_bits(struct super_block *sb,
3075 int *ino_bits_ret, int *lblk_bits_ret)
3076 {
3077 *ino_bits_ret = 8 * sizeof(nid_t);
3078 *lblk_bits_ret = 8 * sizeof(block_t);
3079 }
3080
f2fs_get_num_devices(struct super_block * sb)3081 static int f2fs_get_num_devices(struct super_block *sb)
3082 {
3083 struct f2fs_sb_info *sbi = F2FS_SB(sb);
3084
3085 if (f2fs_is_multi_device(sbi))
3086 return sbi->s_ndevs;
3087 return 1;
3088 }
3089
f2fs_get_devices(struct super_block * sb,struct request_queue ** devs)3090 static void f2fs_get_devices(struct super_block *sb,
3091 struct request_queue **devs)
3092 {
3093 struct f2fs_sb_info *sbi = F2FS_SB(sb);
3094 int i;
3095
3096 for (i = 0; i < sbi->s_ndevs; i++)
3097 devs[i] = bdev_get_queue(FDEV(i).bdev);
3098 }
3099
3100 static const struct fscrypt_operations f2fs_cryptops = {
3101 .key_prefix = "f2fs:",
3102 .get_context = f2fs_get_context,
3103 .set_context = f2fs_set_context,
3104 .get_dummy_policy = f2fs_get_dummy_policy,
3105 .empty_dir = f2fs_empty_dir,
3106 .has_stable_inodes = f2fs_has_stable_inodes,
3107 .get_ino_and_lblk_bits = f2fs_get_ino_and_lblk_bits,
3108 .get_num_devices = f2fs_get_num_devices,
3109 .get_devices = f2fs_get_devices,
3110 };
3111 #endif
3112
f2fs_nfs_get_inode(struct super_block * sb,u64 ino,u32 generation)3113 static struct inode *f2fs_nfs_get_inode(struct super_block *sb,
3114 u64 ino, u32 generation)
3115 {
3116 struct f2fs_sb_info *sbi = F2FS_SB(sb);
3117 struct inode *inode;
3118
3119 if (f2fs_check_nid_range(sbi, ino))
3120 return ERR_PTR(-ESTALE);
3121
3122 /*
3123 * f2fs_iget isn't quite right if the inode is currently unallocated!
3124 * However f2fs_iget currently does appropriate checks to handle stale
3125 * inodes so everything is OK.
3126 */
3127 inode = f2fs_iget(sb, ino);
3128 if (IS_ERR(inode))
3129 return ERR_CAST(inode);
3130 if (unlikely(generation && inode->i_generation != generation)) {
3131 /* we didn't find the right inode.. */
3132 iput(inode);
3133 return ERR_PTR(-ESTALE);
3134 }
3135 return inode;
3136 }
3137
f2fs_fh_to_dentry(struct super_block * sb,struct fid * fid,int fh_len,int fh_type)3138 static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid,
3139 int fh_len, int fh_type)
3140 {
3141 return generic_fh_to_dentry(sb, fid, fh_len, fh_type,
3142 f2fs_nfs_get_inode);
3143 }
3144
f2fs_fh_to_parent(struct super_block * sb,struct fid * fid,int fh_len,int fh_type)3145 static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid,
3146 int fh_len, int fh_type)
3147 {
3148 return generic_fh_to_parent(sb, fid, fh_len, fh_type,
3149 f2fs_nfs_get_inode);
3150 }
3151
3152 static const struct export_operations f2fs_export_ops = {
3153 .fh_to_dentry = f2fs_fh_to_dentry,
3154 .fh_to_parent = f2fs_fh_to_parent,
3155 .get_parent = f2fs_get_parent,
3156 };
3157
max_file_blocks(struct inode * inode)3158 loff_t max_file_blocks(struct inode *inode)
3159 {
3160 loff_t result = 0;
3161 loff_t leaf_count;
3162
3163 /*
3164 * note: previously, result is equal to (DEF_ADDRS_PER_INODE -
3165 * DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more
3166 * space in inode.i_addr, it will be more safe to reassign
3167 * result as zero.
3168 */
3169
3170 if (inode && f2fs_compressed_file(inode))
3171 leaf_count = ADDRS_PER_BLOCK(inode);
3172 else
3173 leaf_count = DEF_ADDRS_PER_BLOCK;
3174
3175 /* two direct node blocks */
3176 result += (leaf_count * 2);
3177
3178 /* two indirect node blocks */
3179 leaf_count *= NIDS_PER_BLOCK;
3180 result += (leaf_count * 2);
3181
3182 /* one double indirect node block */
3183 leaf_count *= NIDS_PER_BLOCK;
3184 result += leaf_count;
3185
3186 return result;
3187 }
3188
__f2fs_commit_super(struct buffer_head * bh,struct f2fs_super_block * super)3189 static int __f2fs_commit_super(struct buffer_head *bh,
3190 struct f2fs_super_block *super)
3191 {
3192 lock_buffer(bh);
3193 if (super)
3194 memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super));
3195 set_buffer_dirty(bh);
3196 unlock_buffer(bh);
3197
3198 /* it's rare case, we can do fua all the time */
3199 return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA);
3200 }
3201
sanity_check_area_boundary(struct f2fs_sb_info * sbi,struct buffer_head * bh)3202 static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi,
3203 struct buffer_head *bh)
3204 {
3205 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
3206 (bh->b_data + F2FS_SUPER_OFFSET);
3207 struct super_block *sb = sbi->sb;
3208 u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr);
3209 u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr);
3210 u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr);
3211 u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr);
3212 u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr);
3213 u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr);
3214 u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt);
3215 u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit);
3216 u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat);
3217 u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa);
3218 u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
3219 u32 segment_count = le32_to_cpu(raw_super->segment_count);
3220 u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
3221 u64 main_end_blkaddr = main_blkaddr +
3222 (segment_count_main << log_blocks_per_seg);
3223 u64 seg_end_blkaddr = segment0_blkaddr +
3224 (segment_count << log_blocks_per_seg);
3225
3226 if (segment0_blkaddr != cp_blkaddr) {
3227 f2fs_info(sbi, "Mismatch start address, segment0(%u) cp_blkaddr(%u)",
3228 segment0_blkaddr, cp_blkaddr);
3229 return true;
3230 }
3231
3232 if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) !=
3233 sit_blkaddr) {
3234 f2fs_info(sbi, "Wrong CP boundary, start(%u) end(%u) blocks(%u)",
3235 cp_blkaddr, sit_blkaddr,
3236 segment_count_ckpt << log_blocks_per_seg);
3237 return true;
3238 }
3239
3240 if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) !=
3241 nat_blkaddr) {
3242 f2fs_info(sbi, "Wrong SIT boundary, start(%u) end(%u) blocks(%u)",
3243 sit_blkaddr, nat_blkaddr,
3244 segment_count_sit << log_blocks_per_seg);
3245 return true;
3246 }
3247
3248 if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) !=
3249 ssa_blkaddr) {
3250 f2fs_info(sbi, "Wrong NAT boundary, start(%u) end(%u) blocks(%u)",
3251 nat_blkaddr, ssa_blkaddr,
3252 segment_count_nat << log_blocks_per_seg);
3253 return true;
3254 }
3255
3256 if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) !=
3257 main_blkaddr) {
3258 f2fs_info(sbi, "Wrong SSA boundary, start(%u) end(%u) blocks(%u)",
3259 ssa_blkaddr, main_blkaddr,
3260 segment_count_ssa << log_blocks_per_seg);
3261 return true;
3262 }
3263
3264 if (main_end_blkaddr > seg_end_blkaddr) {
3265 f2fs_info(sbi, "Wrong MAIN_AREA boundary, start(%u) end(%llu) block(%u)",
3266 main_blkaddr, seg_end_blkaddr,
3267 segment_count_main << log_blocks_per_seg);
3268 return true;
3269 } else if (main_end_blkaddr < seg_end_blkaddr) {
3270 int err = 0;
3271 char *res;
3272
3273 /* fix in-memory information all the time */
3274 raw_super->segment_count = cpu_to_le32((main_end_blkaddr -
3275 segment0_blkaddr) >> log_blocks_per_seg);
3276
3277 if (f2fs_readonly(sb) || bdev_read_only(sb->s_bdev)) {
3278 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
3279 res = "internally";
3280 } else {
3281 err = __f2fs_commit_super(bh, NULL);
3282 res = err ? "failed" : "done";
3283 }
3284 f2fs_info(sbi, "Fix alignment : %s, start(%u) end(%llu) block(%u)",
3285 res, main_blkaddr, seg_end_blkaddr,
3286 segment_count_main << log_blocks_per_seg);
3287 if (err)
3288 return true;
3289 }
3290 return false;
3291 }
3292
sanity_check_raw_super(struct f2fs_sb_info * sbi,struct buffer_head * bh)3293 static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
3294 struct buffer_head *bh)
3295 {
3296 block_t segment_count, segs_per_sec, secs_per_zone, segment_count_main;
3297 block_t total_sections, blocks_per_seg;
3298 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
3299 (bh->b_data + F2FS_SUPER_OFFSET);
3300 size_t crc_offset = 0;
3301 __u32 crc = 0;
3302
3303 if (le32_to_cpu(raw_super->magic) != F2FS_SUPER_MAGIC) {
3304 f2fs_info(sbi, "Magic Mismatch, valid(0x%x) - read(0x%x)",
3305 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic));
3306 return -EINVAL;
3307 }
3308
3309 /* Check checksum_offset and crc in superblock */
3310 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_SB_CHKSUM)) {
3311 crc_offset = le32_to_cpu(raw_super->checksum_offset);
3312 if (crc_offset !=
3313 offsetof(struct f2fs_super_block, crc)) {
3314 f2fs_info(sbi, "Invalid SB checksum offset: %zu",
3315 crc_offset);
3316 return -EFSCORRUPTED;
3317 }
3318 crc = le32_to_cpu(raw_super->crc);
3319 if (!f2fs_crc_valid(sbi, crc, raw_super, crc_offset)) {
3320 f2fs_info(sbi, "Invalid SB checksum value: %u", crc);
3321 return -EFSCORRUPTED;
3322 }
3323 }
3324
3325 /* Currently, support only 4KB block size */
3326 if (le32_to_cpu(raw_super->log_blocksize) != F2FS_BLKSIZE_BITS) {
3327 f2fs_info(sbi, "Invalid log_blocksize (%u), supports only %u",
3328 le32_to_cpu(raw_super->log_blocksize),
3329 F2FS_BLKSIZE_BITS);
3330 return -EFSCORRUPTED;
3331 }
3332
3333 /* check log blocks per segment */
3334 if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) {
3335 f2fs_info(sbi, "Invalid log blocks per segment (%u)",
3336 le32_to_cpu(raw_super->log_blocks_per_seg));
3337 return -EFSCORRUPTED;
3338 }
3339
3340 /* Currently, support 512/1024/2048/4096 bytes sector size */
3341 if (le32_to_cpu(raw_super->log_sectorsize) >
3342 F2FS_MAX_LOG_SECTOR_SIZE ||
3343 le32_to_cpu(raw_super->log_sectorsize) <
3344 F2FS_MIN_LOG_SECTOR_SIZE) {
3345 f2fs_info(sbi, "Invalid log sectorsize (%u)",
3346 le32_to_cpu(raw_super->log_sectorsize));
3347 return -EFSCORRUPTED;
3348 }
3349 if (le32_to_cpu(raw_super->log_sectors_per_block) +
3350 le32_to_cpu(raw_super->log_sectorsize) !=
3351 F2FS_MAX_LOG_SECTOR_SIZE) {
3352 f2fs_info(sbi, "Invalid log sectors per block(%u) log sectorsize(%u)",
3353 le32_to_cpu(raw_super->log_sectors_per_block),
3354 le32_to_cpu(raw_super->log_sectorsize));
3355 return -EFSCORRUPTED;
3356 }
3357
3358 segment_count = le32_to_cpu(raw_super->segment_count);
3359 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
3360 segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
3361 secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
3362 total_sections = le32_to_cpu(raw_super->section_count);
3363
3364 /* blocks_per_seg should be 512, given the above check */
3365 blocks_per_seg = 1 << le32_to_cpu(raw_super->log_blocks_per_seg);
3366
3367 if (segment_count > F2FS_MAX_SEGMENT ||
3368 segment_count < F2FS_MIN_SEGMENTS) {
3369 f2fs_info(sbi, "Invalid segment count (%u)", segment_count);
3370 return -EFSCORRUPTED;
3371 }
3372
3373 if (total_sections > segment_count_main || total_sections < 1 ||
3374 segs_per_sec > segment_count || !segs_per_sec) {
3375 f2fs_info(sbi, "Invalid segment/section count (%u, %u x %u)",
3376 segment_count, total_sections, segs_per_sec);
3377 return -EFSCORRUPTED;
3378 }
3379
3380 if (segment_count_main != total_sections * segs_per_sec) {
3381 f2fs_info(sbi, "Invalid segment/section count (%u != %u * %u)",
3382 segment_count_main, total_sections, segs_per_sec);
3383 return -EFSCORRUPTED;
3384 }
3385
3386 if ((segment_count / segs_per_sec) < total_sections) {
3387 f2fs_info(sbi, "Small segment_count (%u < %u * %u)",
3388 segment_count, segs_per_sec, total_sections);
3389 return -EFSCORRUPTED;
3390 }
3391
3392 if (segment_count > (le64_to_cpu(raw_super->block_count) >> 9)) {
3393 f2fs_info(sbi, "Wrong segment_count / block_count (%u > %llu)",
3394 segment_count, le64_to_cpu(raw_super->block_count));
3395 return -EFSCORRUPTED;
3396 }
3397
3398 if (RDEV(0).path[0]) {
3399 block_t dev_seg_count = le32_to_cpu(RDEV(0).total_segments);
3400 int i = 1;
3401
3402 while (i < MAX_DEVICES && RDEV(i).path[0]) {
3403 dev_seg_count += le32_to_cpu(RDEV(i).total_segments);
3404 i++;
3405 }
3406 if (segment_count != dev_seg_count) {
3407 f2fs_info(sbi, "Segment count (%u) mismatch with total segments from devices (%u)",
3408 segment_count, dev_seg_count);
3409 return -EFSCORRUPTED;
3410 }
3411 } else {
3412 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_BLKZONED) &&
3413 !bdev_is_zoned(sbi->sb->s_bdev)) {
3414 f2fs_info(sbi, "Zoned block device path is missing");
3415 return -EFSCORRUPTED;
3416 }
3417 }
3418
3419 if (secs_per_zone > total_sections || !secs_per_zone) {
3420 f2fs_info(sbi, "Wrong secs_per_zone / total_sections (%u, %u)",
3421 secs_per_zone, total_sections);
3422 return -EFSCORRUPTED;
3423 }
3424 if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION ||
3425 raw_super->hot_ext_count > F2FS_MAX_EXTENSION ||
3426 (le32_to_cpu(raw_super->extension_count) +
3427 raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) {
3428 f2fs_info(sbi, "Corrupted extension count (%u + %u > %u)",
3429 le32_to_cpu(raw_super->extension_count),
3430 raw_super->hot_ext_count,
3431 F2FS_MAX_EXTENSION);
3432 return -EFSCORRUPTED;
3433 }
3434
3435 if (le32_to_cpu(raw_super->cp_payload) >=
3436 (blocks_per_seg - F2FS_CP_PACKS -
3437 NR_CURSEG_PERSIST_TYPE)) {
3438 f2fs_info(sbi, "Insane cp_payload (%u >= %u)",
3439 le32_to_cpu(raw_super->cp_payload),
3440 blocks_per_seg - F2FS_CP_PACKS -
3441 NR_CURSEG_PERSIST_TYPE);
3442 return -EFSCORRUPTED;
3443 }
3444
3445 /* check reserved ino info */
3446 if (le32_to_cpu(raw_super->node_ino) != 1 ||
3447 le32_to_cpu(raw_super->meta_ino) != 2 ||
3448 le32_to_cpu(raw_super->root_ino) != 3) {
3449 f2fs_info(sbi, "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)",
3450 le32_to_cpu(raw_super->node_ino),
3451 le32_to_cpu(raw_super->meta_ino),
3452 le32_to_cpu(raw_super->root_ino));
3453 return -EFSCORRUPTED;
3454 }
3455
3456 /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */
3457 if (sanity_check_area_boundary(sbi, bh))
3458 return -EFSCORRUPTED;
3459
3460 return 0;
3461 }
3462
f2fs_sanity_check_ckpt(struct f2fs_sb_info * sbi)3463 int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi)
3464 {
3465 unsigned int total, fsmeta;
3466 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
3467 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
3468 unsigned int ovp_segments, reserved_segments;
3469 unsigned int main_segs, blocks_per_seg;
3470 unsigned int sit_segs, nat_segs;
3471 unsigned int sit_bitmap_size, nat_bitmap_size;
3472 unsigned int log_blocks_per_seg;
3473 unsigned int segment_count_main;
3474 unsigned int cp_pack_start_sum, cp_payload;
3475 block_t user_block_count, valid_user_blocks;
3476 block_t avail_node_count, valid_node_count;
3477 unsigned int nat_blocks, nat_bits_bytes, nat_bits_blocks;
3478 int i, j;
3479
3480 total = le32_to_cpu(raw_super->segment_count);
3481 fsmeta = le32_to_cpu(raw_super->segment_count_ckpt);
3482 sit_segs = le32_to_cpu(raw_super->segment_count_sit);
3483 fsmeta += sit_segs;
3484 nat_segs = le32_to_cpu(raw_super->segment_count_nat);
3485 fsmeta += nat_segs;
3486 fsmeta += le32_to_cpu(ckpt->rsvd_segment_count);
3487 fsmeta += le32_to_cpu(raw_super->segment_count_ssa);
3488
3489 if (unlikely(fsmeta >= total))
3490 return 1;
3491
3492 ovp_segments = le32_to_cpu(ckpt->overprov_segment_count);
3493 reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count);
3494
3495 if (!f2fs_sb_has_readonly(sbi) &&
3496 unlikely(fsmeta < F2FS_MIN_META_SEGMENTS ||
3497 ovp_segments == 0 || reserved_segments == 0)) {
3498 f2fs_err(sbi, "Wrong layout: check mkfs.f2fs version");
3499 return 1;
3500 }
3501 user_block_count = le64_to_cpu(ckpt->user_block_count);
3502 segment_count_main = le32_to_cpu(raw_super->segment_count_main) +
3503 (f2fs_sb_has_readonly(sbi) ? 1 : 0);
3504 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
3505 if (!user_block_count || user_block_count >=
3506 segment_count_main << log_blocks_per_seg) {
3507 f2fs_err(sbi, "Wrong user_block_count: %u",
3508 user_block_count);
3509 return 1;
3510 }
3511
3512 valid_user_blocks = le64_to_cpu(ckpt->valid_block_count);
3513 if (valid_user_blocks > user_block_count) {
3514 f2fs_err(sbi, "Wrong valid_user_blocks: %u, user_block_count: %u",
3515 valid_user_blocks, user_block_count);
3516 return 1;
3517 }
3518
3519 valid_node_count = le32_to_cpu(ckpt->valid_node_count);
3520 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
3521 if (valid_node_count > avail_node_count) {
3522 f2fs_err(sbi, "Wrong valid_node_count: %u, avail_node_count: %u",
3523 valid_node_count, avail_node_count);
3524 return 1;
3525 }
3526
3527 main_segs = le32_to_cpu(raw_super->segment_count_main);
3528 blocks_per_seg = sbi->blocks_per_seg;
3529
3530 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
3531 if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs ||
3532 le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg)
3533 return 1;
3534
3535 if (f2fs_sb_has_readonly(sbi))
3536 goto check_data;
3537
3538 for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) {
3539 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
3540 le32_to_cpu(ckpt->cur_node_segno[j])) {
3541 f2fs_err(sbi, "Node segment (%u, %u) has the same segno: %u",
3542 i, j,
3543 le32_to_cpu(ckpt->cur_node_segno[i]));
3544 return 1;
3545 }
3546 }
3547 }
3548 check_data:
3549 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {
3550 if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs ||
3551 le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg)
3552 return 1;
3553
3554 if (f2fs_sb_has_readonly(sbi))
3555 goto skip_cross;
3556
3557 for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) {
3558 if (le32_to_cpu(ckpt->cur_data_segno[i]) ==
3559 le32_to_cpu(ckpt->cur_data_segno[j])) {
3560 f2fs_err(sbi, "Data segment (%u, %u) has the same segno: %u",
3561 i, j,
3562 le32_to_cpu(ckpt->cur_data_segno[i]));
3563 return 1;
3564 }
3565 }
3566 }
3567 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
3568 for (j = 0; j < NR_CURSEG_DATA_TYPE; j++) {
3569 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
3570 le32_to_cpu(ckpt->cur_data_segno[j])) {
3571 f2fs_err(sbi, "Node segment (%u) and Data segment (%u) has the same segno: %u",
3572 i, j,
3573 le32_to_cpu(ckpt->cur_node_segno[i]));
3574 return 1;
3575 }
3576 }
3577 }
3578 skip_cross:
3579 sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
3580 nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
3581
3582 if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 ||
3583 nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) {
3584 f2fs_err(sbi, "Wrong bitmap size: sit: %u, nat:%u",
3585 sit_bitmap_size, nat_bitmap_size);
3586 return 1;
3587 }
3588
3589 cp_pack_start_sum = __start_sum_addr(sbi);
3590 cp_payload = __cp_payload(sbi);
3591 if (cp_pack_start_sum < cp_payload + 1 ||
3592 cp_pack_start_sum > blocks_per_seg - 1 -
3593 NR_CURSEG_PERSIST_TYPE) {
3594 f2fs_err(sbi, "Wrong cp_pack_start_sum: %u",
3595 cp_pack_start_sum);
3596 return 1;
3597 }
3598
3599 if (__is_set_ckpt_flags(ckpt, CP_LARGE_NAT_BITMAP_FLAG) &&
3600 le32_to_cpu(ckpt->checksum_offset) != CP_MIN_CHKSUM_OFFSET) {
3601 f2fs_warn(sbi, "using deprecated layout of large_nat_bitmap, "
3602 "please run fsck v1.13.0 or higher to repair, chksum_offset: %u, "
3603 "fixed with patch: \"f2fs-tools: relocate chksum_offset for large_nat_bitmap feature\"",
3604 le32_to_cpu(ckpt->checksum_offset));
3605 return 1;
3606 }
3607
3608 nat_blocks = nat_segs << log_blocks_per_seg;
3609 nat_bits_bytes = nat_blocks / BITS_PER_BYTE;
3610 nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8);
3611 if (__is_set_ckpt_flags(ckpt, CP_NAT_BITS_FLAG) &&
3612 (cp_payload + F2FS_CP_PACKS +
3613 NR_CURSEG_PERSIST_TYPE + nat_bits_blocks >= blocks_per_seg)) {
3614 f2fs_warn(sbi, "Insane cp_payload: %u, nat_bits_blocks: %u)",
3615 cp_payload, nat_bits_blocks);
3616 return 1;
3617 }
3618
3619 if (unlikely(f2fs_cp_error(sbi))) {
3620 f2fs_err(sbi, "A bug case: need to run fsck");
3621 return 1;
3622 }
3623 return 0;
3624 }
3625
init_sb_info(struct f2fs_sb_info * sbi)3626 static void init_sb_info(struct f2fs_sb_info *sbi)
3627 {
3628 struct f2fs_super_block *raw_super = sbi->raw_super;
3629 int i;
3630
3631 sbi->log_sectors_per_block =
3632 le32_to_cpu(raw_super->log_sectors_per_block);
3633 sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize);
3634 sbi->blocksize = 1 << sbi->log_blocksize;
3635 sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
3636 sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg;
3637 sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
3638 sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
3639 sbi->total_sections = le32_to_cpu(raw_super->section_count);
3640 sbi->total_node_count =
3641 (le32_to_cpu(raw_super->segment_count_nat) / 2)
3642 * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK;
3643 F2FS_ROOT_INO(sbi) = le32_to_cpu(raw_super->root_ino);
3644 F2FS_NODE_INO(sbi) = le32_to_cpu(raw_super->node_ino);
3645 F2FS_META_INO(sbi) = le32_to_cpu(raw_super->meta_ino);
3646 sbi->cur_victim_sec = NULL_SECNO;
3647 sbi->gc_mode = GC_NORMAL;
3648 sbi->next_victim_seg[BG_GC] = NULL_SEGNO;
3649 sbi->next_victim_seg[FG_GC] = NULL_SEGNO;
3650 sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH;
3651 sbi->migration_granularity = sbi->segs_per_sec;
3652 sbi->seq_file_ra_mul = MIN_RA_MUL;
3653 sbi->max_fragment_chunk = DEF_FRAGMENT_SIZE;
3654 sbi->max_fragment_hole = DEF_FRAGMENT_SIZE;
3655 spin_lock_init(&sbi->gc_urgent_high_lock);
3656 atomic64_set(&sbi->current_atomic_write, 0);
3657
3658 sbi->dir_level = DEF_DIR_LEVEL;
3659 sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL;
3660 sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL;
3661 sbi->interval_time[DISCARD_TIME] = DEF_IDLE_INTERVAL;
3662 sbi->interval_time[GC_TIME] = DEF_IDLE_INTERVAL;
3663 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_INTERVAL;
3664 sbi->interval_time[UMOUNT_DISCARD_TIMEOUT] =
3665 DEF_UMOUNT_DISCARD_TIMEOUT;
3666 clear_sbi_flag(sbi, SBI_NEED_FSCK);
3667
3668 for (i = 0; i < NR_COUNT_TYPE; i++)
3669 atomic_set(&sbi->nr_pages[i], 0);
3670
3671 for (i = 0; i < META; i++)
3672 atomic_set(&sbi->wb_sync_req[i], 0);
3673
3674 INIT_LIST_HEAD(&sbi->s_list);
3675 mutex_init(&sbi->umount_mutex);
3676 init_f2fs_rwsem(&sbi->io_order_lock);
3677 spin_lock_init(&sbi->cp_lock);
3678
3679 sbi->dirty_device = 0;
3680 spin_lock_init(&sbi->dev_lock);
3681
3682 init_f2fs_rwsem(&sbi->sb_lock);
3683 init_f2fs_rwsem(&sbi->pin_sem);
3684 }
3685
init_percpu_info(struct f2fs_sb_info * sbi)3686 static int init_percpu_info(struct f2fs_sb_info *sbi)
3687 {
3688 int err;
3689
3690 err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL);
3691 if (err)
3692 return err;
3693
3694 err = percpu_counter_init(&sbi->rf_node_block_count, 0, GFP_KERNEL);
3695 if (err)
3696 goto err_valid_block;
3697
3698 err = percpu_counter_init(&sbi->total_valid_inode_count, 0,
3699 GFP_KERNEL);
3700 if (err)
3701 goto err_node_block;
3702 return 0;
3703
3704 err_node_block:
3705 percpu_counter_destroy(&sbi->rf_node_block_count);
3706 err_valid_block:
3707 percpu_counter_destroy(&sbi->alloc_valid_block_count);
3708 return err;
3709 }
3710
3711 #ifdef CONFIG_BLK_DEV_ZONED
3712
3713 struct f2fs_report_zones_args {
3714 struct f2fs_sb_info *sbi;
3715 struct f2fs_dev_info *dev;
3716 };
3717
f2fs_report_zone_cb(struct blk_zone * zone,unsigned int idx,void * data)3718 static int f2fs_report_zone_cb(struct blk_zone *zone, unsigned int idx,
3719 void *data)
3720 {
3721 struct f2fs_report_zones_args *rz_args = data;
3722 block_t unusable_blocks = (zone->len - zone->capacity) >>
3723 F2FS_LOG_SECTORS_PER_BLOCK;
3724
3725 if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL)
3726 return 0;
3727
3728 set_bit(idx, rz_args->dev->blkz_seq);
3729 if (!rz_args->sbi->unusable_blocks_per_sec) {
3730 rz_args->sbi->unusable_blocks_per_sec = unusable_blocks;
3731 return 0;
3732 }
3733 if (rz_args->sbi->unusable_blocks_per_sec != unusable_blocks) {
3734 f2fs_err(rz_args->sbi, "F2FS supports single zone capacity\n");
3735 return -EINVAL;
3736 }
3737 return 0;
3738 }
3739
init_blkz_info(struct f2fs_sb_info * sbi,int devi)3740 static int init_blkz_info(struct f2fs_sb_info *sbi, int devi)
3741 {
3742 struct block_device *bdev = FDEV(devi).bdev;
3743 sector_t nr_sectors = bdev_nr_sectors(bdev);
3744 struct f2fs_report_zones_args rep_zone_arg;
3745 int ret;
3746
3747 if (!f2fs_sb_has_blkzoned(sbi))
3748 return 0;
3749
3750 if (sbi->blocks_per_blkz && sbi->blocks_per_blkz !=
3751 SECTOR_TO_BLOCK(bdev_zone_sectors(bdev)))
3752 return -EINVAL;
3753 sbi->blocks_per_blkz = SECTOR_TO_BLOCK(bdev_zone_sectors(bdev));
3754 if (sbi->log_blocks_per_blkz && sbi->log_blocks_per_blkz !=
3755 __ilog2_u32(sbi->blocks_per_blkz))
3756 return -EINVAL;
3757 sbi->log_blocks_per_blkz = __ilog2_u32(sbi->blocks_per_blkz);
3758 FDEV(devi).nr_blkz = SECTOR_TO_BLOCK(nr_sectors) >>
3759 sbi->log_blocks_per_blkz;
3760 if (nr_sectors & (bdev_zone_sectors(bdev) - 1))
3761 FDEV(devi).nr_blkz++;
3762
3763 FDEV(devi).blkz_seq = f2fs_kvzalloc(sbi,
3764 BITS_TO_LONGS(FDEV(devi).nr_blkz)
3765 * sizeof(unsigned long),
3766 GFP_KERNEL);
3767 if (!FDEV(devi).blkz_seq)
3768 return -ENOMEM;
3769
3770 rep_zone_arg.sbi = sbi;
3771 rep_zone_arg.dev = &FDEV(devi);
3772
3773 ret = blkdev_report_zones(bdev, 0, BLK_ALL_ZONES, f2fs_report_zone_cb,
3774 &rep_zone_arg);
3775 if (ret < 0)
3776 return ret;
3777 return 0;
3778 }
3779 #endif
3780
3781 /*
3782 * Read f2fs raw super block.
3783 * Because we have two copies of super block, so read both of them
3784 * to get the first valid one. If any one of them is broken, we pass
3785 * them recovery flag back to the caller.
3786 */
read_raw_super_block(struct f2fs_sb_info * sbi,struct f2fs_super_block ** raw_super,int * valid_super_block,int * recovery)3787 static int read_raw_super_block(struct f2fs_sb_info *sbi,
3788 struct f2fs_super_block **raw_super,
3789 int *valid_super_block, int *recovery)
3790 {
3791 struct super_block *sb = sbi->sb;
3792 int block;
3793 struct buffer_head *bh;
3794 struct f2fs_super_block *super;
3795 int err = 0;
3796
3797 super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL);
3798 if (!super)
3799 return -ENOMEM;
3800
3801 for (block = 0; block < 2; block++) {
3802 bh = sb_bread(sb, block);
3803 if (!bh) {
3804 f2fs_err(sbi, "Unable to read %dth superblock",
3805 block + 1);
3806 err = -EIO;
3807 *recovery = 1;
3808 continue;
3809 }
3810
3811 /* sanity checking of raw super */
3812 err = sanity_check_raw_super(sbi, bh);
3813 if (err) {
3814 f2fs_err(sbi, "Can't find valid F2FS filesystem in %dth superblock",
3815 block + 1);
3816 brelse(bh);
3817 *recovery = 1;
3818 continue;
3819 }
3820
3821 if (!*raw_super) {
3822 memcpy(super, bh->b_data + F2FS_SUPER_OFFSET,
3823 sizeof(*super));
3824 *valid_super_block = block;
3825 *raw_super = super;
3826 }
3827 brelse(bh);
3828 }
3829
3830 /* No valid superblock */
3831 if (!*raw_super)
3832 kfree(super);
3833 else
3834 err = 0;
3835
3836 return err;
3837 }
3838
f2fs_commit_super(struct f2fs_sb_info * sbi,bool recover)3839 int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover)
3840 {
3841 struct buffer_head *bh;
3842 __u32 crc = 0;
3843 int err;
3844
3845 if ((recover && f2fs_readonly(sbi->sb)) ||
3846 bdev_read_only(sbi->sb->s_bdev)) {
3847 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
3848 return -EROFS;
3849 }
3850
3851 /* we should update superblock crc here */
3852 if (!recover && f2fs_sb_has_sb_chksum(sbi)) {
3853 crc = f2fs_crc32(sbi, F2FS_RAW_SUPER(sbi),
3854 offsetof(struct f2fs_super_block, crc));
3855 F2FS_RAW_SUPER(sbi)->crc = cpu_to_le32(crc);
3856 }
3857
3858 /* write back-up superblock first */
3859 bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1);
3860 if (!bh)
3861 return -EIO;
3862 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
3863 brelse(bh);
3864
3865 /* if we are in recovery path, skip writing valid superblock */
3866 if (recover || err)
3867 return err;
3868
3869 /* write current valid superblock */
3870 bh = sb_bread(sbi->sb, sbi->valid_super_block);
3871 if (!bh)
3872 return -EIO;
3873 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
3874 brelse(bh);
3875 return err;
3876 }
3877
f2fs_handle_stop(struct f2fs_sb_info * sbi,unsigned char reason)3878 void f2fs_handle_stop(struct f2fs_sb_info *sbi, unsigned char reason)
3879 {
3880 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
3881 int err;
3882
3883 f2fs_bug_on(sbi, reason >= MAX_STOP_REASON);
3884
3885 f2fs_down_write(&sbi->sb_lock);
3886
3887 if (raw_super->s_stop_reason[reason] < ((1 << BITS_PER_BYTE) - 1))
3888 raw_super->s_stop_reason[reason]++;
3889
3890 err = f2fs_commit_super(sbi, false);
3891 if (err)
3892 f2fs_err(sbi, "f2fs_commit_super fails to record reason:%u err:%d",
3893 reason, err);
3894
3895 f2fs_up_write(&sbi->sb_lock);
3896 }
3897
f2fs_scan_devices(struct f2fs_sb_info * sbi)3898 static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
3899 {
3900 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
3901 unsigned int max_devices = MAX_DEVICES;
3902 unsigned int logical_blksize;
3903 int i;
3904
3905 /* Initialize single device information */
3906 if (!RDEV(0).path[0]) {
3907 if (!bdev_is_zoned(sbi->sb->s_bdev))
3908 return 0;
3909 max_devices = 1;
3910 }
3911
3912 /*
3913 * Initialize multiple devices information, or single
3914 * zoned block device information.
3915 */
3916 sbi->devs = f2fs_kzalloc(sbi,
3917 array_size(max_devices,
3918 sizeof(struct f2fs_dev_info)),
3919 GFP_KERNEL);
3920 if (!sbi->devs)
3921 return -ENOMEM;
3922
3923 logical_blksize = bdev_logical_block_size(sbi->sb->s_bdev);
3924 sbi->aligned_blksize = true;
3925
3926 for (i = 0; i < max_devices; i++) {
3927
3928 if (i > 0 && !RDEV(i).path[0])
3929 break;
3930
3931 if (max_devices == 1) {
3932 /* Single zoned block device mount */
3933 FDEV(0).bdev =
3934 blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev,
3935 sbi->sb->s_mode, sbi->sb->s_type);
3936 } else {
3937 /* Multi-device mount */
3938 memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN);
3939 FDEV(i).total_segments =
3940 le32_to_cpu(RDEV(i).total_segments);
3941 if (i == 0) {
3942 FDEV(i).start_blk = 0;
3943 FDEV(i).end_blk = FDEV(i).start_blk +
3944 (FDEV(i).total_segments <<
3945 sbi->log_blocks_per_seg) - 1 +
3946 le32_to_cpu(raw_super->segment0_blkaddr);
3947 } else {
3948 FDEV(i).start_blk = FDEV(i - 1).end_blk + 1;
3949 FDEV(i).end_blk = FDEV(i).start_blk +
3950 (FDEV(i).total_segments <<
3951 sbi->log_blocks_per_seg) - 1;
3952 }
3953 FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path,
3954 sbi->sb->s_mode, sbi->sb->s_type);
3955 }
3956 if (IS_ERR(FDEV(i).bdev))
3957 return PTR_ERR(FDEV(i).bdev);
3958
3959 /* to release errored devices */
3960 sbi->s_ndevs = i + 1;
3961
3962 if (logical_blksize != bdev_logical_block_size(FDEV(i).bdev))
3963 sbi->aligned_blksize = false;
3964
3965 #ifdef CONFIG_BLK_DEV_ZONED
3966 if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM &&
3967 !f2fs_sb_has_blkzoned(sbi)) {
3968 f2fs_err(sbi, "Zoned block device feature not enabled");
3969 return -EINVAL;
3970 }
3971 if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) {
3972 if (init_blkz_info(sbi, i)) {
3973 f2fs_err(sbi, "Failed to initialize F2FS blkzone information");
3974 return -EINVAL;
3975 }
3976 if (max_devices == 1)
3977 break;
3978 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)",
3979 i, FDEV(i).path,
3980 FDEV(i).total_segments,
3981 FDEV(i).start_blk, FDEV(i).end_blk,
3982 bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ?
3983 "Host-aware" : "Host-managed");
3984 continue;
3985 }
3986 #endif
3987 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x",
3988 i, FDEV(i).path,
3989 FDEV(i).total_segments,
3990 FDEV(i).start_blk, FDEV(i).end_blk);
3991 }
3992 f2fs_info(sbi,
3993 "IO Block Size: %8d KB", F2FS_IO_SIZE_KB(sbi));
3994 return 0;
3995 }
3996
f2fs_setup_casefold(struct f2fs_sb_info * sbi)3997 static int f2fs_setup_casefold(struct f2fs_sb_info *sbi)
3998 {
3999 #ifdef CONFIG_UNICODE
4000 if (f2fs_sb_has_casefold(sbi) && !sbi->sb->s_encoding) {
4001 const struct f2fs_sb_encodings *encoding_info;
4002 struct unicode_map *encoding;
4003 __u16 encoding_flags;
4004
4005 if (f2fs_sb_read_encoding(sbi->raw_super, &encoding_info,
4006 &encoding_flags)) {
4007 f2fs_err(sbi,
4008 "Encoding requested by superblock is unknown");
4009 return -EINVAL;
4010 }
4011
4012 encoding = utf8_load(encoding_info->version);
4013 if (IS_ERR(encoding)) {
4014 f2fs_err(sbi,
4015 "can't mount with superblock charset: %s-%s "
4016 "not supported by the kernel. flags: 0x%x.",
4017 encoding_info->name, encoding_info->version,
4018 encoding_flags);
4019 return PTR_ERR(encoding);
4020 }
4021 f2fs_info(sbi, "Using encoding defined by superblock: "
4022 "%s-%s with flags 0x%hx", encoding_info->name,
4023 encoding_info->version?:"\b", encoding_flags);
4024
4025 sbi->sb->s_encoding = encoding;
4026 sbi->sb->s_encoding_flags = encoding_flags;
4027 }
4028 #else
4029 if (f2fs_sb_has_casefold(sbi)) {
4030 f2fs_err(sbi, "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
4031 return -EINVAL;
4032 }
4033 #endif
4034 return 0;
4035 }
4036
f2fs_tuning_parameters(struct f2fs_sb_info * sbi)4037 static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi)
4038 {
4039 struct f2fs_sm_info *sm_i = SM_I(sbi);
4040
4041 /* adjust parameters according to the volume size */
4042 if (sm_i->main_segments <= SMALL_VOLUME_SEGMENTS) {
4043 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
4044 if (f2fs_block_unit_discard(sbi))
4045 sm_i->dcc_info->discard_granularity = 1;
4046 sm_i->ipu_policy = 1 << F2FS_IPU_FORCE |
4047 1 << F2FS_IPU_HONOR_OPU_WRITE;
4048 }
4049
4050 sbi->readdir_ra = 1;
4051 }
4052
f2fs_fill_super(struct super_block * sb,void * data,int silent)4053 static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
4054 {
4055 struct f2fs_sb_info *sbi;
4056 struct f2fs_super_block *raw_super;
4057 struct inode *root;
4058 int err;
4059 bool skip_recovery = false, need_fsck = false;
4060 char *options = NULL;
4061 int recovery, i, valid_super_block;
4062 struct curseg_info *seg_i;
4063 int retry_cnt = 1;
4064
4065 try_onemore:
4066 err = -EINVAL;
4067 raw_super = NULL;
4068 valid_super_block = -1;
4069 recovery = 0;
4070
4071 /* allocate memory for f2fs-specific super block info */
4072 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL);
4073 if (!sbi)
4074 return -ENOMEM;
4075
4076 sbi->sb = sb;
4077
4078 /* Load the checksum driver */
4079 sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0);
4080 if (IS_ERR(sbi->s_chksum_driver)) {
4081 f2fs_err(sbi, "Cannot load crc32 driver.");
4082 err = PTR_ERR(sbi->s_chksum_driver);
4083 sbi->s_chksum_driver = NULL;
4084 goto free_sbi;
4085 }
4086
4087 /* set a block size */
4088 if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) {
4089 f2fs_err(sbi, "unable to set blocksize");
4090 goto free_sbi;
4091 }
4092
4093 err = read_raw_super_block(sbi, &raw_super, &valid_super_block,
4094 &recovery);
4095 if (err)
4096 goto free_sbi;
4097
4098 sb->s_fs_info = sbi;
4099 sbi->raw_super = raw_super;
4100
4101 /* precompute checksum seed for metadata */
4102 if (f2fs_sb_has_inode_chksum(sbi))
4103 sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid,
4104 sizeof(raw_super->uuid));
4105
4106 default_options(sbi);
4107 /* parse mount options */
4108 options = kstrdup((const char *)data, GFP_KERNEL);
4109 if (data && !options) {
4110 err = -ENOMEM;
4111 goto free_sb_buf;
4112 }
4113
4114 err = parse_options(sb, options, false);
4115 if (err)
4116 goto free_options;
4117
4118 sb->s_maxbytes = max_file_blocks(NULL) <<
4119 le32_to_cpu(raw_super->log_blocksize);
4120 sb->s_max_links = F2FS_LINK_MAX;
4121
4122 err = f2fs_setup_casefold(sbi);
4123 if (err)
4124 goto free_options;
4125
4126 #ifdef CONFIG_QUOTA
4127 sb->dq_op = &f2fs_quota_operations;
4128 sb->s_qcop = &f2fs_quotactl_ops;
4129 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ;
4130
4131 if (f2fs_sb_has_quota_ino(sbi)) {
4132 for (i = 0; i < MAXQUOTAS; i++) {
4133 if (f2fs_qf_ino(sbi->sb, i))
4134 sbi->nquota_files++;
4135 }
4136 }
4137 #endif
4138
4139 sb->s_op = &f2fs_sops;
4140 #ifdef CONFIG_FS_ENCRYPTION
4141 sb->s_cop = &f2fs_cryptops;
4142 #endif
4143 #ifdef CONFIG_FS_VERITY
4144 sb->s_vop = &f2fs_verityops;
4145 #endif
4146 sb->s_xattr = f2fs_xattr_handlers;
4147 sb->s_export_op = &f2fs_export_ops;
4148 sb->s_magic = F2FS_SUPER_MAGIC;
4149 sb->s_time_gran = 1;
4150 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
4151 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
4152 memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid));
4153 sb->s_iflags |= SB_I_CGROUPWB;
4154
4155 /* init f2fs-specific super block info */
4156 sbi->valid_super_block = valid_super_block;
4157 init_f2fs_rwsem(&sbi->gc_lock);
4158 mutex_init(&sbi->writepages);
4159 init_f2fs_rwsem(&sbi->cp_global_sem);
4160 init_f2fs_rwsem(&sbi->node_write);
4161 init_f2fs_rwsem(&sbi->node_change);
4162
4163 /* disallow all the data/node/meta page writes */
4164 set_sbi_flag(sbi, SBI_POR_DOING);
4165 spin_lock_init(&sbi->stat_lock);
4166
4167 for (i = 0; i < NR_PAGE_TYPE; i++) {
4168 int n = (i == META) ? 1 : NR_TEMP_TYPE;
4169 int j;
4170
4171 sbi->write_io[i] =
4172 f2fs_kmalloc(sbi,
4173 array_size(n,
4174 sizeof(struct f2fs_bio_info)),
4175 GFP_KERNEL);
4176 if (!sbi->write_io[i]) {
4177 err = -ENOMEM;
4178 goto free_bio_info;
4179 }
4180
4181 for (j = HOT; j < n; j++) {
4182 init_f2fs_rwsem(&sbi->write_io[i][j].io_rwsem);
4183 sbi->write_io[i][j].sbi = sbi;
4184 sbi->write_io[i][j].bio = NULL;
4185 spin_lock_init(&sbi->write_io[i][j].io_lock);
4186 INIT_LIST_HEAD(&sbi->write_io[i][j].io_list);
4187 INIT_LIST_HEAD(&sbi->write_io[i][j].bio_list);
4188 init_f2fs_rwsem(&sbi->write_io[i][j].bio_list_lock);
4189 }
4190 }
4191
4192 init_f2fs_rwsem(&sbi->cp_rwsem);
4193 init_f2fs_rwsem(&sbi->quota_sem);
4194 init_waitqueue_head(&sbi->cp_wait);
4195 init_sb_info(sbi);
4196
4197 err = f2fs_init_iostat(sbi);
4198 if (err)
4199 goto free_bio_info;
4200
4201 err = init_percpu_info(sbi);
4202 if (err)
4203 goto free_iostat;
4204
4205 if (F2FS_IO_ALIGNED(sbi)) {
4206 sbi->write_io_dummy =
4207 mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0);
4208 if (!sbi->write_io_dummy) {
4209 err = -ENOMEM;
4210 goto free_percpu;
4211 }
4212 }
4213
4214 /* init per sbi slab cache */
4215 err = f2fs_init_xattr_caches(sbi);
4216 if (err)
4217 goto free_io_dummy;
4218 err = f2fs_init_page_array_cache(sbi);
4219 if (err)
4220 goto free_xattr_cache;
4221
4222 /* get an inode for meta space */
4223 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi));
4224 if (IS_ERR(sbi->meta_inode)) {
4225 f2fs_err(sbi, "Failed to read F2FS meta data inode");
4226 err = PTR_ERR(sbi->meta_inode);
4227 goto free_page_array_cache;
4228 }
4229
4230 err = f2fs_get_valid_checkpoint(sbi);
4231 if (err) {
4232 f2fs_err(sbi, "Failed to get valid F2FS checkpoint");
4233 goto free_meta_inode;
4234 }
4235
4236 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_QUOTA_NEED_FSCK_FLAG))
4237 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
4238 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_DISABLED_QUICK_FLAG)) {
4239 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
4240 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL;
4241 }
4242
4243 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FSCK_FLAG))
4244 set_sbi_flag(sbi, SBI_NEED_FSCK);
4245
4246 /* Initialize device list */
4247 err = f2fs_scan_devices(sbi);
4248 if (err) {
4249 f2fs_err(sbi, "Failed to find devices");
4250 goto free_devices;
4251 }
4252
4253 err = f2fs_init_post_read_wq(sbi);
4254 if (err) {
4255 f2fs_err(sbi, "Failed to initialize post read workqueue");
4256 goto free_devices;
4257 }
4258
4259 sbi->total_valid_node_count =
4260 le32_to_cpu(sbi->ckpt->valid_node_count);
4261 percpu_counter_set(&sbi->total_valid_inode_count,
4262 le32_to_cpu(sbi->ckpt->valid_inode_count));
4263 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count);
4264 sbi->total_valid_block_count =
4265 le64_to_cpu(sbi->ckpt->valid_block_count);
4266 sbi->last_valid_block_count = sbi->total_valid_block_count;
4267 sbi->reserved_blocks = 0;
4268 sbi->current_reserved_blocks = 0;
4269 limit_reserve_root(sbi);
4270 adjust_unusable_cap_perc(sbi);
4271
4272 for (i = 0; i < NR_INODE_TYPE; i++) {
4273 INIT_LIST_HEAD(&sbi->inode_list[i]);
4274 spin_lock_init(&sbi->inode_lock[i]);
4275 }
4276 mutex_init(&sbi->flush_lock);
4277
4278 f2fs_init_extent_cache_info(sbi);
4279
4280 f2fs_init_ino_entry_info(sbi);
4281
4282 f2fs_init_fsync_node_info(sbi);
4283
4284 /* setup checkpoint request control and start checkpoint issue thread */
4285 f2fs_init_ckpt_req_control(sbi);
4286 if (!f2fs_readonly(sb) && !test_opt(sbi, DISABLE_CHECKPOINT) &&
4287 test_opt(sbi, MERGE_CHECKPOINT)) {
4288 err = f2fs_start_ckpt_thread(sbi);
4289 if (err) {
4290 f2fs_err(sbi,
4291 "Failed to start F2FS issue_checkpoint_thread (%d)",
4292 err);
4293 goto stop_ckpt_thread;
4294 }
4295 }
4296
4297 /* setup f2fs internal modules */
4298 err = f2fs_build_segment_manager(sbi);
4299 if (err) {
4300 f2fs_err(sbi, "Failed to initialize F2FS segment manager (%d)",
4301 err);
4302 goto free_sm;
4303 }
4304 err = f2fs_build_node_manager(sbi);
4305 if (err) {
4306 f2fs_err(sbi, "Failed to initialize F2FS node manager (%d)",
4307 err);
4308 goto free_nm;
4309 }
4310
4311 err = adjust_reserved_segment(sbi);
4312 if (err)
4313 goto free_nm;
4314
4315 /* For write statistics */
4316 sbi->sectors_written_start = f2fs_get_sectors_written(sbi);
4317
4318 /* Read accumulated write IO statistics if exists */
4319 seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
4320 if (__exist_node_summaries(sbi))
4321 sbi->kbytes_written =
4322 le64_to_cpu(seg_i->journal->info.kbytes_written);
4323
4324 f2fs_build_gc_manager(sbi);
4325
4326 err = f2fs_build_stats(sbi);
4327 if (err)
4328 goto free_nm;
4329
4330 /* get an inode for node space */
4331 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi));
4332 if (IS_ERR(sbi->node_inode)) {
4333 f2fs_err(sbi, "Failed to read node inode");
4334 err = PTR_ERR(sbi->node_inode);
4335 goto free_stats;
4336 }
4337
4338 /* read root inode and dentry */
4339 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi));
4340 if (IS_ERR(root)) {
4341 f2fs_err(sbi, "Failed to read root inode");
4342 err = PTR_ERR(root);
4343 goto free_node_inode;
4344 }
4345 if (!S_ISDIR(root->i_mode) || !root->i_blocks ||
4346 !root->i_size || !root->i_nlink) {
4347 iput(root);
4348 err = -EINVAL;
4349 goto free_node_inode;
4350 }
4351
4352 sb->s_root = d_make_root(root); /* allocate root dentry */
4353 if (!sb->s_root) {
4354 err = -ENOMEM;
4355 goto free_node_inode;
4356 }
4357
4358 err = f2fs_init_compress_inode(sbi);
4359 if (err)
4360 goto free_root_inode;
4361
4362 err = f2fs_register_sysfs(sbi);
4363 if (err)
4364 goto free_compress_inode;
4365
4366 #ifdef CONFIG_QUOTA
4367 /* Enable quota usage during mount */
4368 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) {
4369 err = f2fs_enable_quotas(sb);
4370 if (err)
4371 f2fs_err(sbi, "Cannot turn on quotas: error %d", err);
4372 }
4373 #endif
4374 /* if there are any orphan inodes, free them */
4375 err = f2fs_recover_orphan_inodes(sbi);
4376 if (err)
4377 goto free_meta;
4378
4379 if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)))
4380 goto reset_checkpoint;
4381
4382 /* recover fsynced data */
4383 if (!test_opt(sbi, DISABLE_ROLL_FORWARD) &&
4384 !test_opt(sbi, NORECOVERY)) {
4385 /*
4386 * mount should be failed, when device has readonly mode, and
4387 * previous checkpoint was not done by clean system shutdown.
4388 */
4389 if (f2fs_hw_is_readonly(sbi)) {
4390 if (!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
4391 err = f2fs_recover_fsync_data(sbi, true);
4392 if (err > 0) {
4393 err = -EROFS;
4394 f2fs_err(sbi, "Need to recover fsync data, but "
4395 "write access unavailable, please try "
4396 "mount w/ disable_roll_forward or norecovery");
4397 }
4398 if (err < 0)
4399 goto free_meta;
4400 }
4401 f2fs_info(sbi, "write access unavailable, skipping recovery");
4402 goto reset_checkpoint;
4403 }
4404
4405 if (need_fsck)
4406 set_sbi_flag(sbi, SBI_NEED_FSCK);
4407
4408 if (skip_recovery)
4409 goto reset_checkpoint;
4410
4411 err = f2fs_recover_fsync_data(sbi, false);
4412 if (err < 0) {
4413 if (err != -ENOMEM)
4414 skip_recovery = true;
4415 need_fsck = true;
4416 f2fs_err(sbi, "Cannot recover all fsync data errno=%d",
4417 err);
4418 goto free_meta;
4419 }
4420 } else {
4421 err = f2fs_recover_fsync_data(sbi, true);
4422
4423 if (!f2fs_readonly(sb) && err > 0) {
4424 err = -EINVAL;
4425 f2fs_err(sbi, "Need to recover fsync data");
4426 goto free_meta;
4427 }
4428 }
4429
4430 /*
4431 * If the f2fs is not readonly and fsync data recovery succeeds,
4432 * check zoned block devices' write pointer consistency.
4433 */
4434 if (!err && !f2fs_readonly(sb) && f2fs_sb_has_blkzoned(sbi)) {
4435 err = f2fs_check_write_pointer(sbi);
4436 if (err)
4437 goto free_meta;
4438 }
4439
4440 reset_checkpoint:
4441 f2fs_init_inmem_curseg(sbi);
4442
4443 /* f2fs_recover_fsync_data() cleared this already */
4444 clear_sbi_flag(sbi, SBI_POR_DOING);
4445
4446 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
4447 err = f2fs_disable_checkpoint(sbi);
4448 if (err)
4449 goto sync_free_meta;
4450 } else if (is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)) {
4451 f2fs_enable_checkpoint(sbi);
4452 }
4453
4454 /*
4455 * If filesystem is not mounted as read-only then
4456 * do start the gc_thread.
4457 */
4458 if ((F2FS_OPTION(sbi).bggc_mode != BGGC_MODE_OFF ||
4459 test_opt(sbi, GC_MERGE)) && !f2fs_readonly(sb)) {
4460 /* After POR, we can run background GC thread.*/
4461 err = f2fs_start_gc_thread(sbi);
4462 if (err)
4463 goto sync_free_meta;
4464 }
4465 kvfree(options);
4466
4467 /* recover broken superblock */
4468 if (recovery) {
4469 err = f2fs_commit_super(sbi, true);
4470 f2fs_info(sbi, "Try to recover %dth superblock, ret: %d",
4471 sbi->valid_super_block ? 1 : 2, err);
4472 }
4473
4474 f2fs_join_shrinker(sbi);
4475
4476 f2fs_tuning_parameters(sbi);
4477
4478 f2fs_notice(sbi, "Mounted with checkpoint version = %llx",
4479 cur_cp_version(F2FS_CKPT(sbi)));
4480 f2fs_update_time(sbi, CP_TIME);
4481 f2fs_update_time(sbi, REQ_TIME);
4482 clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
4483 return 0;
4484
4485 sync_free_meta:
4486 /* safe to flush all the data */
4487 sync_filesystem(sbi->sb);
4488 retry_cnt = 0;
4489
4490 free_meta:
4491 #ifdef CONFIG_QUOTA
4492 f2fs_truncate_quota_inode_pages(sb);
4493 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb))
4494 f2fs_quota_off_umount(sbi->sb);
4495 #endif
4496 /*
4497 * Some dirty meta pages can be produced by f2fs_recover_orphan_inodes()
4498 * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg()
4499 * followed by f2fs_write_checkpoint() through f2fs_write_node_pages(), which
4500 * falls into an infinite loop in f2fs_sync_meta_pages().
4501 */
4502 truncate_inode_pages_final(META_MAPPING(sbi));
4503 /* evict some inodes being cached by GC */
4504 evict_inodes(sb);
4505 f2fs_unregister_sysfs(sbi);
4506 free_compress_inode:
4507 f2fs_destroy_compress_inode(sbi);
4508 free_root_inode:
4509 dput(sb->s_root);
4510 sb->s_root = NULL;
4511 free_node_inode:
4512 f2fs_release_ino_entry(sbi, true);
4513 truncate_inode_pages_final(NODE_MAPPING(sbi));
4514 iput(sbi->node_inode);
4515 sbi->node_inode = NULL;
4516 free_stats:
4517 f2fs_destroy_stats(sbi);
4518 free_nm:
4519 /* stop discard thread before destroying node manager */
4520 f2fs_stop_discard_thread(sbi);
4521 f2fs_destroy_node_manager(sbi);
4522 free_sm:
4523 f2fs_destroy_segment_manager(sbi);
4524 stop_ckpt_thread:
4525 f2fs_stop_ckpt_thread(sbi);
4526 f2fs_destroy_post_read_wq(sbi);
4527 free_devices:
4528 destroy_device_list(sbi);
4529 kvfree(sbi->ckpt);
4530 free_meta_inode:
4531 make_bad_inode(sbi->meta_inode);
4532 iput(sbi->meta_inode);
4533 sbi->meta_inode = NULL;
4534 free_page_array_cache:
4535 f2fs_destroy_page_array_cache(sbi);
4536 free_xattr_cache:
4537 f2fs_destroy_xattr_caches(sbi);
4538 free_io_dummy:
4539 mempool_destroy(sbi->write_io_dummy);
4540 free_percpu:
4541 destroy_percpu_info(sbi);
4542 free_iostat:
4543 f2fs_destroy_iostat(sbi);
4544 free_bio_info:
4545 for (i = 0; i < NR_PAGE_TYPE; i++)
4546 kvfree(sbi->write_io[i]);
4547
4548 #ifdef CONFIG_UNICODE
4549 utf8_unload(sb->s_encoding);
4550 sb->s_encoding = NULL;
4551 #endif
4552 free_options:
4553 #ifdef CONFIG_QUOTA
4554 for (i = 0; i < MAXQUOTAS; i++)
4555 kfree(F2FS_OPTION(sbi).s_qf_names[i]);
4556 #endif
4557 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy);
4558 kvfree(options);
4559 free_sb_buf:
4560 kfree(raw_super);
4561 free_sbi:
4562 if (sbi->s_chksum_driver)
4563 crypto_free_shash(sbi->s_chksum_driver);
4564 kfree(sbi);
4565
4566 /* give only one another chance */
4567 if (retry_cnt > 0 && skip_recovery) {
4568 retry_cnt--;
4569 shrink_dcache_sb(sb);
4570 goto try_onemore;
4571 }
4572 return err;
4573 }
4574
f2fs_mount(struct file_system_type * fs_type,int flags,const char * dev_name,void * data)4575 static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags,
4576 const char *dev_name, void *data)
4577 {
4578 return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super);
4579 }
4580
kill_f2fs_super(struct super_block * sb)4581 static void kill_f2fs_super(struct super_block *sb)
4582 {
4583 if (sb->s_root) {
4584 struct f2fs_sb_info *sbi = F2FS_SB(sb);
4585
4586 set_sbi_flag(sbi, SBI_IS_CLOSE);
4587 f2fs_stop_gc_thread(sbi);
4588 f2fs_stop_discard_thread(sbi);
4589
4590 #ifdef CONFIG_F2FS_FS_COMPRESSION
4591 /*
4592 * latter evict_inode() can bypass checking and invalidating
4593 * compress inode cache.
4594 */
4595 if (test_opt(sbi, COMPRESS_CACHE))
4596 truncate_inode_pages_final(COMPRESS_MAPPING(sbi));
4597 #endif
4598
4599 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
4600 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
4601 struct cp_control cpc = {
4602 .reason = CP_UMOUNT,
4603 };
4604 f2fs_write_checkpoint(sbi, &cpc);
4605 }
4606
4607 if (is_sbi_flag_set(sbi, SBI_IS_RECOVERED) && f2fs_readonly(sb))
4608 sb->s_flags &= ~SB_RDONLY;
4609 }
4610 kill_block_super(sb);
4611 }
4612
4613 static struct file_system_type f2fs_fs_type = {
4614 .owner = THIS_MODULE,
4615 .name = "f2fs",
4616 .mount = f2fs_mount,
4617 .kill_sb = kill_f2fs_super,
4618 .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP,
4619 };
4620 MODULE_ALIAS_FS("f2fs");
4621
init_inodecache(void)4622 static int __init init_inodecache(void)
4623 {
4624 f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache",
4625 sizeof(struct f2fs_inode_info), 0,
4626 SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL);
4627 if (!f2fs_inode_cachep)
4628 return -ENOMEM;
4629 return 0;
4630 }
4631
destroy_inodecache(void)4632 static void destroy_inodecache(void)
4633 {
4634 /*
4635 * Make sure all delayed rcu free inodes are flushed before we
4636 * destroy cache.
4637 */
4638 rcu_barrier();
4639 kmem_cache_destroy(f2fs_inode_cachep);
4640 }
4641
init_f2fs_fs(void)4642 static int __init init_f2fs_fs(void)
4643 {
4644 int err;
4645
4646 if (PAGE_SIZE != F2FS_BLKSIZE) {
4647 printk("F2FS not supported on PAGE_SIZE(%lu) != %d\n",
4648 PAGE_SIZE, F2FS_BLKSIZE);
4649 return -EINVAL;
4650 }
4651
4652 err = init_inodecache();
4653 if (err)
4654 goto fail;
4655 err = f2fs_create_node_manager_caches();
4656 if (err)
4657 goto free_inodecache;
4658 err = f2fs_create_segment_manager_caches();
4659 if (err)
4660 goto free_node_manager_caches;
4661 err = f2fs_create_checkpoint_caches();
4662 if (err)
4663 goto free_segment_manager_caches;
4664 err = f2fs_create_recovery_cache();
4665 if (err)
4666 goto free_checkpoint_caches;
4667 err = f2fs_create_extent_cache();
4668 if (err)
4669 goto free_recovery_cache;
4670 err = f2fs_create_garbage_collection_cache();
4671 if (err)
4672 goto free_extent_cache;
4673 err = f2fs_init_sysfs();
4674 if (err)
4675 goto free_garbage_collection_cache;
4676 err = register_shrinker(&f2fs_shrinker_info);
4677 if (err)
4678 goto free_sysfs;
4679 err = register_filesystem(&f2fs_fs_type);
4680 if (err)
4681 goto free_shrinker;
4682 f2fs_create_root_stats();
4683 err = f2fs_init_post_read_processing();
4684 if (err)
4685 goto free_root_stats;
4686 err = f2fs_init_iostat_processing();
4687 if (err)
4688 goto free_post_read;
4689 err = f2fs_init_bio_entry_cache();
4690 if (err)
4691 goto free_iostat;
4692 err = f2fs_init_bioset();
4693 if (err)
4694 goto free_bio_enrty_cache;
4695 err = f2fs_init_compress_mempool();
4696 if (err)
4697 goto free_bioset;
4698 err = f2fs_init_compress_cache();
4699 if (err)
4700 goto free_compress_mempool;
4701 err = f2fs_create_casefold_cache();
4702 if (err)
4703 goto free_compress_cache;
4704 return 0;
4705 free_compress_cache:
4706 f2fs_destroy_compress_cache();
4707 free_compress_mempool:
4708 f2fs_destroy_compress_mempool();
4709 free_bioset:
4710 f2fs_destroy_bioset();
4711 free_bio_enrty_cache:
4712 f2fs_destroy_bio_entry_cache();
4713 free_iostat:
4714 f2fs_destroy_iostat_processing();
4715 free_post_read:
4716 f2fs_destroy_post_read_processing();
4717 free_root_stats:
4718 f2fs_destroy_root_stats();
4719 unregister_filesystem(&f2fs_fs_type);
4720 free_shrinker:
4721 unregister_shrinker(&f2fs_shrinker_info);
4722 free_sysfs:
4723 f2fs_exit_sysfs();
4724 free_garbage_collection_cache:
4725 f2fs_destroy_garbage_collection_cache();
4726 free_extent_cache:
4727 f2fs_destroy_extent_cache();
4728 free_recovery_cache:
4729 f2fs_destroy_recovery_cache();
4730 free_checkpoint_caches:
4731 f2fs_destroy_checkpoint_caches();
4732 free_segment_manager_caches:
4733 f2fs_destroy_segment_manager_caches();
4734 free_node_manager_caches:
4735 f2fs_destroy_node_manager_caches();
4736 free_inodecache:
4737 destroy_inodecache();
4738 fail:
4739 return err;
4740 }
4741
exit_f2fs_fs(void)4742 static void __exit exit_f2fs_fs(void)
4743 {
4744 f2fs_destroy_casefold_cache();
4745 f2fs_destroy_compress_cache();
4746 f2fs_destroy_compress_mempool();
4747 f2fs_destroy_bioset();
4748 f2fs_destroy_bio_entry_cache();
4749 f2fs_destroy_iostat_processing();
4750 f2fs_destroy_post_read_processing();
4751 f2fs_destroy_root_stats();
4752 unregister_filesystem(&f2fs_fs_type);
4753 unregister_shrinker(&f2fs_shrinker_info);
4754 f2fs_exit_sysfs();
4755 f2fs_destroy_garbage_collection_cache();
4756 f2fs_destroy_extent_cache();
4757 f2fs_destroy_recovery_cache();
4758 f2fs_destroy_checkpoint_caches();
4759 f2fs_destroy_segment_manager_caches();
4760 f2fs_destroy_node_manager_caches();
4761 destroy_inodecache();
4762 }
4763
4764 module_init(init_f2fs_fs)
4765 module_exit(exit_f2fs_fs)
4766
4767 MODULE_AUTHOR("Samsung Electronics's Praesto Team");
4768 MODULE_DESCRIPTION("Flash Friendly File System");
4769 MODULE_LICENSE("GPL");
4770 MODULE_IMPORT_NS(ANDROID_GKI_VFS_EXPORT_ONLY);
4771 MODULE_SOFTDEP("pre: crc32");
4772
4773