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/fs_context.h> 12 #include <linux/sched/mm.h> 13 #include <linux/statfs.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 [FAULT_BLKADDR_VALIDITY] = "invalid blkaddr", 64 [FAULT_BLKADDR_CONSISTENCE] = "inconsistent blkaddr", 65 [FAULT_NO_SEGMENT] = "no free segment", 66 [FAULT_INCONSISTENT_FOOTER] = "inconsistent footer", 67 }; 68 f2fs_build_fault_attr(struct f2fs_sb_info * sbi,unsigned long rate,unsigned long type)69 int f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned long rate, 70 unsigned long type) 71 { 72 struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info; 73 74 if (rate) { 75 if (rate > INT_MAX) 76 return -EINVAL; 77 atomic_set(&ffi->inject_ops, 0); 78 ffi->inject_rate = (int)rate; 79 } 80 81 if (type) { 82 if (type >= BIT(FAULT_MAX)) 83 return -EINVAL; 84 ffi->inject_type = (unsigned int)type; 85 } 86 87 if (!rate && !type) 88 memset(ffi, 0, sizeof(struct f2fs_fault_info)); 89 else 90 f2fs_info(sbi, 91 "build fault injection attr: rate: %lu, type: 0x%lx", 92 rate, type); 93 return 0; 94 } 95 #endif 96 97 /* f2fs-wide shrinker description */ 98 static struct shrinker *f2fs_shrinker_info; 99 f2fs_init_shrinker(void)100 static int __init f2fs_init_shrinker(void) 101 { 102 f2fs_shrinker_info = shrinker_alloc(0, "f2fs-shrinker"); 103 if (!f2fs_shrinker_info) 104 return -ENOMEM; 105 106 f2fs_shrinker_info->count_objects = f2fs_shrink_count; 107 f2fs_shrinker_info->scan_objects = f2fs_shrink_scan; 108 109 shrinker_register(f2fs_shrinker_info); 110 111 return 0; 112 } 113 f2fs_exit_shrinker(void)114 static void f2fs_exit_shrinker(void) 115 { 116 shrinker_free(f2fs_shrinker_info); 117 } 118 119 enum { 120 Opt_gc_background, 121 Opt_disable_roll_forward, 122 Opt_norecovery, 123 Opt_discard, 124 Opt_nodiscard, 125 Opt_noheap, 126 Opt_heap, 127 Opt_user_xattr, 128 Opt_nouser_xattr, 129 Opt_acl, 130 Opt_noacl, 131 Opt_active_logs, 132 Opt_disable_ext_identify, 133 Opt_inline_xattr, 134 Opt_noinline_xattr, 135 Opt_inline_xattr_size, 136 Opt_inline_data, 137 Opt_inline_dentry, 138 Opt_noinline_dentry, 139 Opt_flush_merge, 140 Opt_noflush_merge, 141 Opt_barrier, 142 Opt_nobarrier, 143 Opt_fastboot, 144 Opt_extent_cache, 145 Opt_noextent_cache, 146 Opt_noinline_data, 147 Opt_data_flush, 148 Opt_reserve_root, 149 Opt_resgid, 150 Opt_resuid, 151 Opt_mode, 152 Opt_fault_injection, 153 Opt_fault_type, 154 Opt_lazytime, 155 Opt_nolazytime, 156 Opt_quota, 157 Opt_noquota, 158 Opt_usrquota, 159 Opt_grpquota, 160 Opt_prjquota, 161 Opt_usrjquota, 162 Opt_grpjquota, 163 Opt_prjjquota, 164 Opt_offusrjquota, 165 Opt_offgrpjquota, 166 Opt_offprjjquota, 167 Opt_jqfmt_vfsold, 168 Opt_jqfmt_vfsv0, 169 Opt_jqfmt_vfsv1, 170 Opt_alloc, 171 Opt_fsync, 172 Opt_test_dummy_encryption, 173 Opt_inlinecrypt, 174 Opt_checkpoint_disable, 175 Opt_checkpoint_disable_cap, 176 Opt_checkpoint_disable_cap_perc, 177 Opt_checkpoint_enable, 178 Opt_checkpoint_merge, 179 Opt_nocheckpoint_merge, 180 Opt_compress_algorithm, 181 Opt_compress_log_size, 182 Opt_compress_extension, 183 Opt_nocompress_extension, 184 Opt_compress_chksum, 185 Opt_compress_mode, 186 Opt_compress_cache, 187 Opt_atgc, 188 Opt_gc_merge, 189 Opt_nogc_merge, 190 Opt_discard_unit, 191 Opt_memory_mode, 192 Opt_age_extent_cache, 193 Opt_errors, 194 Opt_nat_bits, 195 Opt_err, 196 }; 197 198 static match_table_t f2fs_tokens = { 199 {Opt_gc_background, "background_gc=%s"}, 200 {Opt_disable_roll_forward, "disable_roll_forward"}, 201 {Opt_norecovery, "norecovery"}, 202 {Opt_discard, "discard"}, 203 {Opt_nodiscard, "nodiscard"}, 204 {Opt_noheap, "no_heap"}, 205 {Opt_heap, "heap"}, 206 {Opt_user_xattr, "user_xattr"}, 207 {Opt_nouser_xattr, "nouser_xattr"}, 208 {Opt_acl, "acl"}, 209 {Opt_noacl, "noacl"}, 210 {Opt_active_logs, "active_logs=%u"}, 211 {Opt_disable_ext_identify, "disable_ext_identify"}, 212 {Opt_inline_xattr, "inline_xattr"}, 213 {Opt_noinline_xattr, "noinline_xattr"}, 214 {Opt_inline_xattr_size, "inline_xattr_size=%u"}, 215 {Opt_inline_data, "inline_data"}, 216 {Opt_inline_dentry, "inline_dentry"}, 217 {Opt_noinline_dentry, "noinline_dentry"}, 218 {Opt_flush_merge, "flush_merge"}, 219 {Opt_noflush_merge, "noflush_merge"}, 220 {Opt_barrier, "barrier"}, 221 {Opt_nobarrier, "nobarrier"}, 222 {Opt_fastboot, "fastboot"}, 223 {Opt_extent_cache, "extent_cache"}, 224 {Opt_noextent_cache, "noextent_cache"}, 225 {Opt_noinline_data, "noinline_data"}, 226 {Opt_data_flush, "data_flush"}, 227 {Opt_reserve_root, "reserve_root=%u"}, 228 {Opt_resgid, "resgid=%u"}, 229 {Opt_resuid, "resuid=%u"}, 230 {Opt_mode, "mode=%s"}, 231 {Opt_fault_injection, "fault_injection=%u"}, 232 {Opt_fault_type, "fault_type=%u"}, 233 {Opt_lazytime, "lazytime"}, 234 {Opt_nolazytime, "nolazytime"}, 235 {Opt_quota, "quota"}, 236 {Opt_noquota, "noquota"}, 237 {Opt_usrquota, "usrquota"}, 238 {Opt_grpquota, "grpquota"}, 239 {Opt_prjquota, "prjquota"}, 240 {Opt_usrjquota, "usrjquota=%s"}, 241 {Opt_grpjquota, "grpjquota=%s"}, 242 {Opt_prjjquota, "prjjquota=%s"}, 243 {Opt_offusrjquota, "usrjquota="}, 244 {Opt_offgrpjquota, "grpjquota="}, 245 {Opt_offprjjquota, "prjjquota="}, 246 {Opt_jqfmt_vfsold, "jqfmt=vfsold"}, 247 {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"}, 248 {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"}, 249 {Opt_alloc, "alloc_mode=%s"}, 250 {Opt_fsync, "fsync_mode=%s"}, 251 {Opt_test_dummy_encryption, "test_dummy_encryption=%s"}, 252 {Opt_test_dummy_encryption, "test_dummy_encryption"}, 253 {Opt_inlinecrypt, "inlinecrypt"}, 254 {Opt_checkpoint_disable, "checkpoint=disable"}, 255 {Opt_checkpoint_disable_cap, "checkpoint=disable:%u"}, 256 {Opt_checkpoint_disable_cap_perc, "checkpoint=disable:%u%%"}, 257 {Opt_checkpoint_enable, "checkpoint=enable"}, 258 {Opt_checkpoint_merge, "checkpoint_merge"}, 259 {Opt_nocheckpoint_merge, "nocheckpoint_merge"}, 260 {Opt_compress_algorithm, "compress_algorithm=%s"}, 261 {Opt_compress_log_size, "compress_log_size=%u"}, 262 {Opt_compress_extension, "compress_extension=%s"}, 263 {Opt_nocompress_extension, "nocompress_extension=%s"}, 264 {Opt_compress_chksum, "compress_chksum"}, 265 {Opt_compress_mode, "compress_mode=%s"}, 266 {Opt_compress_cache, "compress_cache"}, 267 {Opt_atgc, "atgc"}, 268 {Opt_gc_merge, "gc_merge"}, 269 {Opt_nogc_merge, "nogc_merge"}, 270 {Opt_discard_unit, "discard_unit=%s"}, 271 {Opt_memory_mode, "memory=%s"}, 272 {Opt_age_extent_cache, "age_extent_cache"}, 273 {Opt_errors, "errors=%s"}, 274 {Opt_nat_bits, "nat_bits"}, 275 {Opt_err, NULL}, 276 }; 277 f2fs_printk(struct f2fs_sb_info * sbi,bool limit_rate,const char * fmt,...)278 void f2fs_printk(struct f2fs_sb_info *sbi, bool limit_rate, 279 const char *fmt, ...) 280 { 281 struct va_format vaf; 282 va_list args; 283 int level; 284 285 va_start(args, fmt); 286 287 level = printk_get_level(fmt); 288 vaf.fmt = printk_skip_level(fmt); 289 vaf.va = &args; 290 if (limit_rate) 291 printk_ratelimited("%c%cF2FS-fs (%s): %pV\n", 292 KERN_SOH_ASCII, level, sbi->sb->s_id, &vaf); 293 else 294 printk("%c%cF2FS-fs (%s): %pV\n", 295 KERN_SOH_ASCII, level, sbi->sb->s_id, &vaf); 296 297 va_end(args); 298 } 299 300 #if IS_ENABLED(CONFIG_UNICODE) 301 static const struct f2fs_sb_encodings { 302 __u16 magic; 303 char *name; 304 unsigned int version; 305 } f2fs_sb_encoding_map[] = { 306 {F2FS_ENC_UTF8_12_1, "utf8", UNICODE_AGE(12, 1, 0)}, 307 }; 308 309 static const struct f2fs_sb_encodings * f2fs_sb_read_encoding(const struct f2fs_super_block * sb)310 f2fs_sb_read_encoding(const struct f2fs_super_block *sb) 311 { 312 __u16 magic = le16_to_cpu(sb->s_encoding); 313 int i; 314 315 for (i = 0; i < ARRAY_SIZE(f2fs_sb_encoding_map); i++) 316 if (magic == f2fs_sb_encoding_map[i].magic) 317 return &f2fs_sb_encoding_map[i]; 318 319 return NULL; 320 } 321 322 struct kmem_cache *f2fs_cf_name_slab; f2fs_create_casefold_cache(void)323 static int __init f2fs_create_casefold_cache(void) 324 { 325 f2fs_cf_name_slab = f2fs_kmem_cache_create("f2fs_casefolded_name", 326 F2FS_NAME_LEN); 327 return f2fs_cf_name_slab ? 0 : -ENOMEM; 328 } 329 f2fs_destroy_casefold_cache(void)330 static void f2fs_destroy_casefold_cache(void) 331 { 332 kmem_cache_destroy(f2fs_cf_name_slab); 333 } 334 #else f2fs_create_casefold_cache(void)335 static int __init f2fs_create_casefold_cache(void) { return 0; } f2fs_destroy_casefold_cache(void)336 static void f2fs_destroy_casefold_cache(void) { } 337 #endif 338 limit_reserve_root(struct f2fs_sb_info * sbi)339 static inline void limit_reserve_root(struct f2fs_sb_info *sbi) 340 { 341 block_t limit = min((sbi->user_block_count >> 3), 342 sbi->user_block_count - sbi->reserved_blocks); 343 344 /* limit is 12.5% */ 345 if (test_opt(sbi, RESERVE_ROOT) && 346 F2FS_OPTION(sbi).root_reserved_blocks > limit) { 347 F2FS_OPTION(sbi).root_reserved_blocks = limit; 348 f2fs_info(sbi, "Reduce reserved blocks for root = %u", 349 F2FS_OPTION(sbi).root_reserved_blocks); 350 } 351 if (!test_opt(sbi, RESERVE_ROOT) && 352 (!uid_eq(F2FS_OPTION(sbi).s_resuid, 353 make_kuid(&init_user_ns, F2FS_DEF_RESUID)) || 354 !gid_eq(F2FS_OPTION(sbi).s_resgid, 355 make_kgid(&init_user_ns, F2FS_DEF_RESGID)))) 356 f2fs_info(sbi, "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root", 357 from_kuid_munged(&init_user_ns, 358 F2FS_OPTION(sbi).s_resuid), 359 from_kgid_munged(&init_user_ns, 360 F2FS_OPTION(sbi).s_resgid)); 361 } 362 adjust_unusable_cap_perc(struct f2fs_sb_info * sbi)363 static inline void adjust_unusable_cap_perc(struct f2fs_sb_info *sbi) 364 { 365 if (!F2FS_OPTION(sbi).unusable_cap_perc) 366 return; 367 368 if (F2FS_OPTION(sbi).unusable_cap_perc == 100) 369 F2FS_OPTION(sbi).unusable_cap = sbi->user_block_count; 370 else 371 F2FS_OPTION(sbi).unusable_cap = (sbi->user_block_count / 100) * 372 F2FS_OPTION(sbi).unusable_cap_perc; 373 374 f2fs_info(sbi, "Adjust unusable cap for checkpoint=disable = %u / %u%%", 375 F2FS_OPTION(sbi).unusable_cap, 376 F2FS_OPTION(sbi).unusable_cap_perc); 377 } 378 init_once(void * foo)379 static void init_once(void *foo) 380 { 381 struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo; 382 383 inode_init_once(&fi->vfs_inode); 384 } 385 386 #ifdef CONFIG_QUOTA 387 static const char * const quotatypes[] = INITQFNAMES; 388 #define QTYPE2NAME(t) (quotatypes[t]) f2fs_set_qf_name(struct f2fs_sb_info * sbi,int qtype,substring_t * args)389 static int f2fs_set_qf_name(struct f2fs_sb_info *sbi, int qtype, 390 substring_t *args) 391 { 392 struct super_block *sb = sbi->sb; 393 char *qname; 394 int ret = -EINVAL; 395 396 if (sb_any_quota_loaded(sb) && !F2FS_OPTION(sbi).s_qf_names[qtype]) { 397 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on"); 398 return -EINVAL; 399 } 400 if (f2fs_sb_has_quota_ino(sbi)) { 401 f2fs_info(sbi, "QUOTA feature is enabled, so ignore qf_name"); 402 return 0; 403 } 404 405 qname = match_strdup(args); 406 if (!qname) { 407 f2fs_err(sbi, "Not enough memory for storing quotafile name"); 408 return -ENOMEM; 409 } 410 if (F2FS_OPTION(sbi).s_qf_names[qtype]) { 411 if (strcmp(F2FS_OPTION(sbi).s_qf_names[qtype], qname) == 0) 412 ret = 0; 413 else 414 f2fs_err(sbi, "%s quota file already specified", 415 QTYPE2NAME(qtype)); 416 goto errout; 417 } 418 if (strchr(qname, '/')) { 419 f2fs_err(sbi, "quotafile must be on filesystem root"); 420 goto errout; 421 } 422 F2FS_OPTION(sbi).s_qf_names[qtype] = qname; 423 set_opt(sbi, QUOTA); 424 return 0; 425 errout: 426 kfree(qname); 427 return ret; 428 } 429 f2fs_clear_qf_name(struct f2fs_sb_info * sbi,int qtype)430 static int f2fs_clear_qf_name(struct f2fs_sb_info *sbi, int qtype) 431 { 432 struct super_block *sb = sbi->sb; 433 434 if (sb_any_quota_loaded(sb) && F2FS_OPTION(sbi).s_qf_names[qtype]) { 435 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on"); 436 return -EINVAL; 437 } 438 kfree(F2FS_OPTION(sbi).s_qf_names[qtype]); 439 F2FS_OPTION(sbi).s_qf_names[qtype] = NULL; 440 return 0; 441 } 442 f2fs_check_quota_options(struct f2fs_sb_info * sbi)443 static int f2fs_check_quota_options(struct f2fs_sb_info *sbi) 444 { 445 /* 446 * We do the test below only for project quotas. 'usrquota' and 447 * 'grpquota' mount options are allowed even without quota feature 448 * to support legacy quotas in quota files. 449 */ 450 if (test_opt(sbi, PRJQUOTA) && !f2fs_sb_has_project_quota(sbi)) { 451 f2fs_err(sbi, "Project quota feature not enabled. Cannot enable project quota enforcement."); 452 return -1; 453 } 454 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] || 455 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] || 456 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) { 457 if (test_opt(sbi, USRQUOTA) && 458 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]) 459 clear_opt(sbi, USRQUOTA); 460 461 if (test_opt(sbi, GRPQUOTA) && 462 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]) 463 clear_opt(sbi, GRPQUOTA); 464 465 if (test_opt(sbi, PRJQUOTA) && 466 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) 467 clear_opt(sbi, PRJQUOTA); 468 469 if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) || 470 test_opt(sbi, PRJQUOTA)) { 471 f2fs_err(sbi, "old and new quota format mixing"); 472 return -1; 473 } 474 475 if (!F2FS_OPTION(sbi).s_jquota_fmt) { 476 f2fs_err(sbi, "journaled quota format not specified"); 477 return -1; 478 } 479 } 480 481 if (f2fs_sb_has_quota_ino(sbi) && F2FS_OPTION(sbi).s_jquota_fmt) { 482 f2fs_info(sbi, "QUOTA feature is enabled, so ignore jquota_fmt"); 483 F2FS_OPTION(sbi).s_jquota_fmt = 0; 484 } 485 return 0; 486 } 487 #endif 488 f2fs_set_test_dummy_encryption(struct f2fs_sb_info * sbi,const char * opt,const substring_t * arg,bool is_remount)489 static int f2fs_set_test_dummy_encryption(struct f2fs_sb_info *sbi, 490 const char *opt, 491 const substring_t *arg, 492 bool is_remount) 493 { 494 struct fs_parameter param = { 495 .type = fs_value_is_string, 496 .string = arg->from ? arg->from : "", 497 }; 498 struct fscrypt_dummy_policy *policy = 499 &F2FS_OPTION(sbi).dummy_enc_policy; 500 int err; 501 502 if (!IS_ENABLED(CONFIG_FS_ENCRYPTION)) { 503 f2fs_warn(sbi, "test_dummy_encryption option not supported"); 504 return -EINVAL; 505 } 506 507 if (!f2fs_sb_has_encrypt(sbi)) { 508 f2fs_err(sbi, "Encrypt feature is off"); 509 return -EINVAL; 510 } 511 512 /* 513 * This mount option is just for testing, and it's not worthwhile to 514 * implement the extra complexity (e.g. RCU protection) that would be 515 * needed to allow it to be set or changed during remount. We do allow 516 * it to be specified during remount, but only if there is no change. 517 */ 518 if (is_remount && !fscrypt_is_dummy_policy_set(policy)) { 519 f2fs_warn(sbi, "Can't set test_dummy_encryption on remount"); 520 return -EINVAL; 521 } 522 523 err = fscrypt_parse_test_dummy_encryption(¶m, policy); 524 if (err) { 525 if (err == -EEXIST) 526 f2fs_warn(sbi, 527 "Can't change test_dummy_encryption on remount"); 528 else if (err == -EINVAL) 529 f2fs_warn(sbi, "Value of option \"%s\" is unrecognized", 530 opt); 531 else 532 f2fs_warn(sbi, "Error processing option \"%s\" [%d]", 533 opt, err); 534 return -EINVAL; 535 } 536 f2fs_warn(sbi, "Test dummy encryption mode enabled"); 537 return 0; 538 } 539 540 #ifdef CONFIG_F2FS_FS_COMPRESSION is_compress_extension_exist(struct f2fs_sb_info * sbi,const char * new_ext,bool is_ext)541 static bool is_compress_extension_exist(struct f2fs_sb_info *sbi, 542 const char *new_ext, bool is_ext) 543 { 544 unsigned char (*ext)[F2FS_EXTENSION_LEN]; 545 int ext_cnt; 546 int i; 547 548 if (is_ext) { 549 ext = F2FS_OPTION(sbi).extensions; 550 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt; 551 } else { 552 ext = F2FS_OPTION(sbi).noextensions; 553 ext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt; 554 } 555 556 for (i = 0; i < ext_cnt; i++) { 557 if (!strcasecmp(new_ext, ext[i])) 558 return true; 559 } 560 561 return false; 562 } 563 564 /* 565 * 1. The same extension name cannot not appear in both compress and non-compress extension 566 * at the same time. 567 * 2. If the compress extension specifies all files, the types specified by the non-compress 568 * extension will be treated as special cases and will not be compressed. 569 * 3. Don't allow the non-compress extension specifies all files. 570 */ f2fs_test_compress_extension(struct f2fs_sb_info * sbi)571 static int f2fs_test_compress_extension(struct f2fs_sb_info *sbi) 572 { 573 unsigned char (*ext)[F2FS_EXTENSION_LEN]; 574 unsigned char (*noext)[F2FS_EXTENSION_LEN]; 575 int ext_cnt, noext_cnt, index = 0, no_index = 0; 576 577 ext = F2FS_OPTION(sbi).extensions; 578 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt; 579 noext = F2FS_OPTION(sbi).noextensions; 580 noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt; 581 582 if (!noext_cnt) 583 return 0; 584 585 for (no_index = 0; no_index < noext_cnt; no_index++) { 586 if (!strcasecmp("*", noext[no_index])) { 587 f2fs_info(sbi, "Don't allow the nocompress extension specifies all files"); 588 return -EINVAL; 589 } 590 for (index = 0; index < ext_cnt; index++) { 591 if (!strcasecmp(ext[index], noext[no_index])) { 592 f2fs_info(sbi, "Don't allow the same extension %s appear in both compress and nocompress extension", 593 ext[index]); 594 return -EINVAL; 595 } 596 } 597 } 598 return 0; 599 } 600 601 #ifdef CONFIG_F2FS_FS_LZ4 f2fs_set_lz4hc_level(struct f2fs_sb_info * sbi,const char * str)602 static int f2fs_set_lz4hc_level(struct f2fs_sb_info *sbi, const char *str) 603 { 604 #ifdef CONFIG_F2FS_FS_LZ4HC 605 unsigned int level; 606 607 if (strlen(str) == 3) { 608 F2FS_OPTION(sbi).compress_level = 0; 609 return 0; 610 } 611 612 str += 3; 613 614 if (str[0] != ':') { 615 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>"); 616 return -EINVAL; 617 } 618 if (kstrtouint(str + 1, 10, &level)) 619 return -EINVAL; 620 621 if (!f2fs_is_compress_level_valid(COMPRESS_LZ4, level)) { 622 f2fs_info(sbi, "invalid lz4hc compress level: %d", level); 623 return -EINVAL; 624 } 625 626 F2FS_OPTION(sbi).compress_level = level; 627 return 0; 628 #else 629 if (strlen(str) == 3) { 630 F2FS_OPTION(sbi).compress_level = 0; 631 return 0; 632 } 633 f2fs_info(sbi, "kernel doesn't support lz4hc compression"); 634 return -EINVAL; 635 #endif 636 } 637 #endif 638 639 #ifdef CONFIG_F2FS_FS_ZSTD f2fs_set_zstd_level(struct f2fs_sb_info * sbi,const char * str)640 static int f2fs_set_zstd_level(struct f2fs_sb_info *sbi, const char *str) 641 { 642 int level; 643 int len = 4; 644 645 if (strlen(str) == len) { 646 F2FS_OPTION(sbi).compress_level = F2FS_ZSTD_DEFAULT_CLEVEL; 647 return 0; 648 } 649 650 str += len; 651 652 if (str[0] != ':') { 653 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>"); 654 return -EINVAL; 655 } 656 if (kstrtoint(str + 1, 10, &level)) 657 return -EINVAL; 658 659 /* f2fs does not support negative compress level now */ 660 if (level < 0) { 661 f2fs_info(sbi, "do not support negative compress level: %d", level); 662 return -ERANGE; 663 } 664 665 if (!f2fs_is_compress_level_valid(COMPRESS_ZSTD, level)) { 666 f2fs_info(sbi, "invalid zstd compress level: %d", level); 667 return -EINVAL; 668 } 669 670 F2FS_OPTION(sbi).compress_level = level; 671 return 0; 672 } 673 #endif 674 #endif 675 parse_options(struct f2fs_sb_info * sbi,char * options,bool is_remount)676 static int parse_options(struct f2fs_sb_info *sbi, char *options, bool is_remount) 677 { 678 substring_t args[MAX_OPT_ARGS]; 679 #ifdef CONFIG_F2FS_FS_COMPRESSION 680 unsigned char (*ext)[F2FS_EXTENSION_LEN]; 681 unsigned char (*noext)[F2FS_EXTENSION_LEN]; 682 int ext_cnt, noext_cnt; 683 #endif 684 char *p, *name; 685 int arg = 0; 686 kuid_t uid; 687 kgid_t gid; 688 int ret; 689 690 if (!options) 691 return 0; 692 693 while ((p = strsep(&options, ",")) != NULL) { 694 int token; 695 696 if (!*p) 697 continue; 698 /* 699 * Initialize args struct so we know whether arg was 700 * found; some options take optional arguments. 701 */ 702 args[0].to = args[0].from = NULL; 703 token = match_token(p, f2fs_tokens, args); 704 705 switch (token) { 706 case Opt_gc_background: 707 name = match_strdup(&args[0]); 708 709 if (!name) 710 return -ENOMEM; 711 if (!strcmp(name, "on")) { 712 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON; 713 } else if (!strcmp(name, "off")) { 714 if (f2fs_sb_has_blkzoned(sbi)) { 715 f2fs_warn(sbi, "zoned devices need bggc"); 716 kfree(name); 717 return -EINVAL; 718 } 719 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_OFF; 720 } else if (!strcmp(name, "sync")) { 721 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_SYNC; 722 } else { 723 kfree(name); 724 return -EINVAL; 725 } 726 kfree(name); 727 break; 728 case Opt_disable_roll_forward: 729 set_opt(sbi, DISABLE_ROLL_FORWARD); 730 break; 731 case Opt_norecovery: 732 /* requires ro mount, checked in f2fs_default_check */ 733 set_opt(sbi, NORECOVERY); 734 break; 735 case Opt_discard: 736 if (!f2fs_hw_support_discard(sbi)) { 737 f2fs_warn(sbi, "device does not support discard"); 738 break; 739 } 740 set_opt(sbi, DISCARD); 741 break; 742 case Opt_nodiscard: 743 if (f2fs_hw_should_discard(sbi)) { 744 f2fs_warn(sbi, "discard is required for zoned block devices"); 745 return -EINVAL; 746 } 747 clear_opt(sbi, DISCARD); 748 break; 749 case Opt_noheap: 750 case Opt_heap: 751 f2fs_warn(sbi, "heap/no_heap options were deprecated"); 752 break; 753 #ifdef CONFIG_F2FS_FS_XATTR 754 case Opt_user_xattr: 755 set_opt(sbi, XATTR_USER); 756 break; 757 case Opt_nouser_xattr: 758 clear_opt(sbi, XATTR_USER); 759 break; 760 case Opt_inline_xattr: 761 set_opt(sbi, INLINE_XATTR); 762 break; 763 case Opt_noinline_xattr: 764 clear_opt(sbi, INLINE_XATTR); 765 break; 766 case Opt_inline_xattr_size: 767 if (args->from && match_int(args, &arg)) 768 return -EINVAL; 769 set_opt(sbi, INLINE_XATTR_SIZE); 770 F2FS_OPTION(sbi).inline_xattr_size = arg; 771 break; 772 #else 773 case Opt_user_xattr: 774 case Opt_nouser_xattr: 775 case Opt_inline_xattr: 776 case Opt_noinline_xattr: 777 case Opt_inline_xattr_size: 778 f2fs_info(sbi, "xattr options not supported"); 779 break; 780 #endif 781 #ifdef CONFIG_F2FS_FS_POSIX_ACL 782 case Opt_acl: 783 set_opt(sbi, POSIX_ACL); 784 break; 785 case Opt_noacl: 786 clear_opt(sbi, POSIX_ACL); 787 break; 788 #else 789 case Opt_acl: 790 case Opt_noacl: 791 f2fs_info(sbi, "acl options not supported"); 792 break; 793 #endif 794 case Opt_active_logs: 795 if (args->from && match_int(args, &arg)) 796 return -EINVAL; 797 if (arg != 2 && arg != 4 && 798 arg != NR_CURSEG_PERSIST_TYPE) 799 return -EINVAL; 800 F2FS_OPTION(sbi).active_logs = arg; 801 break; 802 case Opt_disable_ext_identify: 803 set_opt(sbi, DISABLE_EXT_IDENTIFY); 804 break; 805 case Opt_inline_data: 806 set_opt(sbi, INLINE_DATA); 807 break; 808 case Opt_inline_dentry: 809 set_opt(sbi, INLINE_DENTRY); 810 break; 811 case Opt_noinline_dentry: 812 clear_opt(sbi, INLINE_DENTRY); 813 break; 814 case Opt_flush_merge: 815 set_opt(sbi, FLUSH_MERGE); 816 break; 817 case Opt_noflush_merge: 818 clear_opt(sbi, FLUSH_MERGE); 819 break; 820 case Opt_nobarrier: 821 set_opt(sbi, NOBARRIER); 822 break; 823 case Opt_barrier: 824 clear_opt(sbi, NOBARRIER); 825 break; 826 case Opt_fastboot: 827 set_opt(sbi, FASTBOOT); 828 break; 829 case Opt_extent_cache: 830 set_opt(sbi, READ_EXTENT_CACHE); 831 break; 832 case Opt_noextent_cache: 833 if (f2fs_sb_has_device_alias(sbi)) { 834 f2fs_err(sbi, "device aliasing requires extent cache"); 835 return -EINVAL; 836 } 837 clear_opt(sbi, READ_EXTENT_CACHE); 838 break; 839 case Opt_noinline_data: 840 clear_opt(sbi, INLINE_DATA); 841 break; 842 case Opt_data_flush: 843 set_opt(sbi, DATA_FLUSH); 844 break; 845 case Opt_reserve_root: 846 if (args->from && match_int(args, &arg)) 847 return -EINVAL; 848 if (test_opt(sbi, RESERVE_ROOT)) { 849 f2fs_info(sbi, "Preserve previous reserve_root=%u", 850 F2FS_OPTION(sbi).root_reserved_blocks); 851 } else { 852 F2FS_OPTION(sbi).root_reserved_blocks = arg; 853 set_opt(sbi, RESERVE_ROOT); 854 } 855 break; 856 case Opt_resuid: 857 if (args->from && match_int(args, &arg)) 858 return -EINVAL; 859 uid = make_kuid(current_user_ns(), arg); 860 if (!uid_valid(uid)) { 861 f2fs_err(sbi, "Invalid uid value %d", arg); 862 return -EINVAL; 863 } 864 F2FS_OPTION(sbi).s_resuid = uid; 865 break; 866 case Opt_resgid: 867 if (args->from && match_int(args, &arg)) 868 return -EINVAL; 869 gid = make_kgid(current_user_ns(), arg); 870 if (!gid_valid(gid)) { 871 f2fs_err(sbi, "Invalid gid value %d", arg); 872 return -EINVAL; 873 } 874 F2FS_OPTION(sbi).s_resgid = gid; 875 break; 876 case Opt_mode: 877 name = match_strdup(&args[0]); 878 879 if (!name) 880 return -ENOMEM; 881 if (!strcmp(name, "adaptive")) { 882 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE; 883 } else if (!strcmp(name, "lfs")) { 884 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS; 885 } else if (!strcmp(name, "fragment:segment")) { 886 F2FS_OPTION(sbi).fs_mode = FS_MODE_FRAGMENT_SEG; 887 } else if (!strcmp(name, "fragment:block")) { 888 F2FS_OPTION(sbi).fs_mode = FS_MODE_FRAGMENT_BLK; 889 } else { 890 kfree(name); 891 return -EINVAL; 892 } 893 kfree(name); 894 break; 895 #ifdef CONFIG_F2FS_FAULT_INJECTION 896 case Opt_fault_injection: 897 if (args->from && match_int(args, &arg)) 898 return -EINVAL; 899 if (f2fs_build_fault_attr(sbi, arg, 900 F2FS_ALL_FAULT_TYPE)) 901 return -EINVAL; 902 set_opt(sbi, FAULT_INJECTION); 903 break; 904 905 case Opt_fault_type: 906 if (args->from && match_int(args, &arg)) 907 return -EINVAL; 908 if (f2fs_build_fault_attr(sbi, 0, arg)) 909 return -EINVAL; 910 set_opt(sbi, FAULT_INJECTION); 911 break; 912 #else 913 case Opt_fault_injection: 914 case Opt_fault_type: 915 f2fs_info(sbi, "fault injection options not supported"); 916 break; 917 #endif 918 case Opt_lazytime: 919 set_opt(sbi, LAZYTIME); 920 break; 921 case Opt_nolazytime: 922 clear_opt(sbi, LAZYTIME); 923 break; 924 #ifdef CONFIG_QUOTA 925 case Opt_quota: 926 case Opt_usrquota: 927 set_opt(sbi, USRQUOTA); 928 break; 929 case Opt_grpquota: 930 set_opt(sbi, GRPQUOTA); 931 break; 932 case Opt_prjquota: 933 set_opt(sbi, PRJQUOTA); 934 break; 935 case Opt_usrjquota: 936 ret = f2fs_set_qf_name(sbi, USRQUOTA, &args[0]); 937 if (ret) 938 return ret; 939 break; 940 case Opt_grpjquota: 941 ret = f2fs_set_qf_name(sbi, GRPQUOTA, &args[0]); 942 if (ret) 943 return ret; 944 break; 945 case Opt_prjjquota: 946 ret = f2fs_set_qf_name(sbi, PRJQUOTA, &args[0]); 947 if (ret) 948 return ret; 949 break; 950 case Opt_offusrjquota: 951 ret = f2fs_clear_qf_name(sbi, USRQUOTA); 952 if (ret) 953 return ret; 954 break; 955 case Opt_offgrpjquota: 956 ret = f2fs_clear_qf_name(sbi, GRPQUOTA); 957 if (ret) 958 return ret; 959 break; 960 case Opt_offprjjquota: 961 ret = f2fs_clear_qf_name(sbi, PRJQUOTA); 962 if (ret) 963 return ret; 964 break; 965 case Opt_jqfmt_vfsold: 966 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD; 967 break; 968 case Opt_jqfmt_vfsv0: 969 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0; 970 break; 971 case Opt_jqfmt_vfsv1: 972 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1; 973 break; 974 case Opt_noquota: 975 clear_opt(sbi, QUOTA); 976 clear_opt(sbi, USRQUOTA); 977 clear_opt(sbi, GRPQUOTA); 978 clear_opt(sbi, PRJQUOTA); 979 break; 980 #else 981 case Opt_quota: 982 case Opt_usrquota: 983 case Opt_grpquota: 984 case Opt_prjquota: 985 case Opt_usrjquota: 986 case Opt_grpjquota: 987 case Opt_prjjquota: 988 case Opt_offusrjquota: 989 case Opt_offgrpjquota: 990 case Opt_offprjjquota: 991 case Opt_jqfmt_vfsold: 992 case Opt_jqfmt_vfsv0: 993 case Opt_jqfmt_vfsv1: 994 case Opt_noquota: 995 f2fs_info(sbi, "quota operations not supported"); 996 break; 997 #endif 998 case Opt_alloc: 999 name = match_strdup(&args[0]); 1000 if (!name) 1001 return -ENOMEM; 1002 1003 if (!strcmp(name, "default")) { 1004 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT; 1005 } else if (!strcmp(name, "reuse")) { 1006 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE; 1007 } else { 1008 kfree(name); 1009 return -EINVAL; 1010 } 1011 kfree(name); 1012 break; 1013 case Opt_fsync: 1014 name = match_strdup(&args[0]); 1015 if (!name) 1016 return -ENOMEM; 1017 if (!strcmp(name, "posix")) { 1018 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX; 1019 } else if (!strcmp(name, "strict")) { 1020 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT; 1021 } else if (!strcmp(name, "nobarrier")) { 1022 F2FS_OPTION(sbi).fsync_mode = 1023 FSYNC_MODE_NOBARRIER; 1024 } else { 1025 kfree(name); 1026 return -EINVAL; 1027 } 1028 kfree(name); 1029 break; 1030 case Opt_test_dummy_encryption: 1031 ret = f2fs_set_test_dummy_encryption(sbi, p, &args[0], 1032 is_remount); 1033 if (ret) 1034 return ret; 1035 break; 1036 case Opt_inlinecrypt: 1037 #ifdef CONFIG_FS_ENCRYPTION_INLINE_CRYPT 1038 set_opt(sbi, INLINECRYPT); 1039 #else 1040 f2fs_info(sbi, "inline encryption not supported"); 1041 #endif 1042 break; 1043 case Opt_checkpoint_disable_cap_perc: 1044 if (args->from && match_int(args, &arg)) 1045 return -EINVAL; 1046 if (arg < 0 || arg > 100) 1047 return -EINVAL; 1048 F2FS_OPTION(sbi).unusable_cap_perc = arg; 1049 set_opt(sbi, DISABLE_CHECKPOINT); 1050 break; 1051 case Opt_checkpoint_disable_cap: 1052 if (args->from && match_int(args, &arg)) 1053 return -EINVAL; 1054 F2FS_OPTION(sbi).unusable_cap = arg; 1055 set_opt(sbi, DISABLE_CHECKPOINT); 1056 break; 1057 case Opt_checkpoint_disable: 1058 set_opt(sbi, DISABLE_CHECKPOINT); 1059 break; 1060 case Opt_checkpoint_enable: 1061 clear_opt(sbi, DISABLE_CHECKPOINT); 1062 break; 1063 case Opt_checkpoint_merge: 1064 set_opt(sbi, MERGE_CHECKPOINT); 1065 break; 1066 case Opt_nocheckpoint_merge: 1067 clear_opt(sbi, MERGE_CHECKPOINT); 1068 break; 1069 #ifdef CONFIG_F2FS_FS_COMPRESSION 1070 case Opt_compress_algorithm: 1071 if (!f2fs_sb_has_compression(sbi)) { 1072 f2fs_info(sbi, "Image doesn't support compression"); 1073 break; 1074 } 1075 name = match_strdup(&args[0]); 1076 if (!name) 1077 return -ENOMEM; 1078 if (!strcmp(name, "lzo")) { 1079 #ifdef CONFIG_F2FS_FS_LZO 1080 F2FS_OPTION(sbi).compress_level = 0; 1081 F2FS_OPTION(sbi).compress_algorithm = 1082 COMPRESS_LZO; 1083 #else 1084 f2fs_info(sbi, "kernel doesn't support lzo compression"); 1085 #endif 1086 } else if (!strncmp(name, "lz4", 3)) { 1087 #ifdef CONFIG_F2FS_FS_LZ4 1088 ret = f2fs_set_lz4hc_level(sbi, name); 1089 if (ret) { 1090 kfree(name); 1091 return -EINVAL; 1092 } 1093 F2FS_OPTION(sbi).compress_algorithm = 1094 COMPRESS_LZ4; 1095 #else 1096 f2fs_info(sbi, "kernel doesn't support lz4 compression"); 1097 #endif 1098 } else if (!strncmp(name, "zstd", 4)) { 1099 #ifdef CONFIG_F2FS_FS_ZSTD 1100 ret = f2fs_set_zstd_level(sbi, name); 1101 if (ret) { 1102 kfree(name); 1103 return -EINVAL; 1104 } 1105 F2FS_OPTION(sbi).compress_algorithm = 1106 COMPRESS_ZSTD; 1107 #else 1108 f2fs_info(sbi, "kernel doesn't support zstd compression"); 1109 #endif 1110 } else if (!strcmp(name, "lzo-rle")) { 1111 #ifdef CONFIG_F2FS_FS_LZORLE 1112 F2FS_OPTION(sbi).compress_level = 0; 1113 F2FS_OPTION(sbi).compress_algorithm = 1114 COMPRESS_LZORLE; 1115 #else 1116 f2fs_info(sbi, "kernel doesn't support lzorle compression"); 1117 #endif 1118 } else { 1119 kfree(name); 1120 return -EINVAL; 1121 } 1122 kfree(name); 1123 break; 1124 case Opt_compress_log_size: 1125 if (!f2fs_sb_has_compression(sbi)) { 1126 f2fs_info(sbi, "Image doesn't support compression"); 1127 break; 1128 } 1129 if (args->from && match_int(args, &arg)) 1130 return -EINVAL; 1131 if (arg < MIN_COMPRESS_LOG_SIZE || 1132 arg > MAX_COMPRESS_LOG_SIZE) { 1133 f2fs_err(sbi, 1134 "Compress cluster log size is out of range"); 1135 return -EINVAL; 1136 } 1137 F2FS_OPTION(sbi).compress_log_size = arg; 1138 break; 1139 case Opt_compress_extension: 1140 if (!f2fs_sb_has_compression(sbi)) { 1141 f2fs_info(sbi, "Image doesn't support compression"); 1142 break; 1143 } 1144 name = match_strdup(&args[0]); 1145 if (!name) 1146 return -ENOMEM; 1147 1148 ext = F2FS_OPTION(sbi).extensions; 1149 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt; 1150 1151 if (strlen(name) >= F2FS_EXTENSION_LEN || 1152 ext_cnt >= COMPRESS_EXT_NUM) { 1153 f2fs_err(sbi, 1154 "invalid extension length/number"); 1155 kfree(name); 1156 return -EINVAL; 1157 } 1158 1159 if (is_compress_extension_exist(sbi, name, true)) { 1160 kfree(name); 1161 break; 1162 } 1163 1164 ret = strscpy(ext[ext_cnt], name); 1165 if (ret < 0) { 1166 kfree(name); 1167 return ret; 1168 } 1169 F2FS_OPTION(sbi).compress_ext_cnt++; 1170 kfree(name); 1171 break; 1172 case Opt_nocompress_extension: 1173 if (!f2fs_sb_has_compression(sbi)) { 1174 f2fs_info(sbi, "Image doesn't support compression"); 1175 break; 1176 } 1177 name = match_strdup(&args[0]); 1178 if (!name) 1179 return -ENOMEM; 1180 1181 noext = F2FS_OPTION(sbi).noextensions; 1182 noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt; 1183 1184 if (strlen(name) >= F2FS_EXTENSION_LEN || 1185 noext_cnt >= COMPRESS_EXT_NUM) { 1186 f2fs_err(sbi, 1187 "invalid extension length/number"); 1188 kfree(name); 1189 return -EINVAL; 1190 } 1191 1192 if (is_compress_extension_exist(sbi, name, false)) { 1193 kfree(name); 1194 break; 1195 } 1196 1197 ret = strscpy(noext[noext_cnt], name); 1198 if (ret < 0) { 1199 kfree(name); 1200 return ret; 1201 } 1202 F2FS_OPTION(sbi).nocompress_ext_cnt++; 1203 kfree(name); 1204 break; 1205 case Opt_compress_chksum: 1206 if (!f2fs_sb_has_compression(sbi)) { 1207 f2fs_info(sbi, "Image doesn't support compression"); 1208 break; 1209 } 1210 F2FS_OPTION(sbi).compress_chksum = true; 1211 break; 1212 case Opt_compress_mode: 1213 if (!f2fs_sb_has_compression(sbi)) { 1214 f2fs_info(sbi, "Image doesn't support compression"); 1215 break; 1216 } 1217 name = match_strdup(&args[0]); 1218 if (!name) 1219 return -ENOMEM; 1220 if (!strcmp(name, "fs")) { 1221 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS; 1222 } else if (!strcmp(name, "user")) { 1223 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_USER; 1224 } else { 1225 kfree(name); 1226 return -EINVAL; 1227 } 1228 kfree(name); 1229 break; 1230 case Opt_compress_cache: 1231 if (!f2fs_sb_has_compression(sbi)) { 1232 f2fs_info(sbi, "Image doesn't support compression"); 1233 break; 1234 } 1235 set_opt(sbi, COMPRESS_CACHE); 1236 break; 1237 #else 1238 case Opt_compress_algorithm: 1239 case Opt_compress_log_size: 1240 case Opt_compress_extension: 1241 case Opt_nocompress_extension: 1242 case Opt_compress_chksum: 1243 case Opt_compress_mode: 1244 case Opt_compress_cache: 1245 f2fs_info(sbi, "compression options not supported"); 1246 break; 1247 #endif 1248 case Opt_atgc: 1249 set_opt(sbi, ATGC); 1250 break; 1251 case Opt_gc_merge: 1252 set_opt(sbi, GC_MERGE); 1253 break; 1254 case Opt_nogc_merge: 1255 clear_opt(sbi, GC_MERGE); 1256 break; 1257 case Opt_discard_unit: 1258 name = match_strdup(&args[0]); 1259 if (!name) 1260 return -ENOMEM; 1261 if (!strcmp(name, "block")) { 1262 F2FS_OPTION(sbi).discard_unit = 1263 DISCARD_UNIT_BLOCK; 1264 } else if (!strcmp(name, "segment")) { 1265 F2FS_OPTION(sbi).discard_unit = 1266 DISCARD_UNIT_SEGMENT; 1267 } else if (!strcmp(name, "section")) { 1268 F2FS_OPTION(sbi).discard_unit = 1269 DISCARD_UNIT_SECTION; 1270 } else { 1271 kfree(name); 1272 return -EINVAL; 1273 } 1274 kfree(name); 1275 break; 1276 case Opt_memory_mode: 1277 name = match_strdup(&args[0]); 1278 if (!name) 1279 return -ENOMEM; 1280 if (!strcmp(name, "normal")) { 1281 F2FS_OPTION(sbi).memory_mode = 1282 MEMORY_MODE_NORMAL; 1283 } else if (!strcmp(name, "low")) { 1284 F2FS_OPTION(sbi).memory_mode = 1285 MEMORY_MODE_LOW; 1286 } else { 1287 kfree(name); 1288 return -EINVAL; 1289 } 1290 kfree(name); 1291 break; 1292 case Opt_age_extent_cache: 1293 set_opt(sbi, AGE_EXTENT_CACHE); 1294 break; 1295 case Opt_errors: 1296 name = match_strdup(&args[0]); 1297 if (!name) 1298 return -ENOMEM; 1299 if (!strcmp(name, "remount-ro")) { 1300 F2FS_OPTION(sbi).errors = 1301 MOUNT_ERRORS_READONLY; 1302 } else if (!strcmp(name, "continue")) { 1303 F2FS_OPTION(sbi).errors = 1304 MOUNT_ERRORS_CONTINUE; 1305 } else if (!strcmp(name, "panic")) { 1306 F2FS_OPTION(sbi).errors = 1307 MOUNT_ERRORS_PANIC; 1308 } else { 1309 kfree(name); 1310 return -EINVAL; 1311 } 1312 kfree(name); 1313 break; 1314 case Opt_nat_bits: 1315 set_opt(sbi, NAT_BITS); 1316 break; 1317 default: 1318 f2fs_err(sbi, "Unrecognized mount option \"%s\" or missing value", 1319 p); 1320 return -EINVAL; 1321 } 1322 } 1323 return 0; 1324 } 1325 f2fs_default_check(struct f2fs_sb_info * sbi)1326 static int f2fs_default_check(struct f2fs_sb_info *sbi) 1327 { 1328 #ifdef CONFIG_QUOTA 1329 if (f2fs_check_quota_options(sbi)) 1330 return -EINVAL; 1331 #else 1332 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sbi->sb)) { 1333 f2fs_info(sbi, "Filesystem with quota feature cannot be mounted RDWR without CONFIG_QUOTA"); 1334 return -EINVAL; 1335 } 1336 if (f2fs_sb_has_project_quota(sbi) && !f2fs_readonly(sbi->sb)) { 1337 f2fs_err(sbi, "Filesystem with project quota feature cannot be mounted RDWR without CONFIG_QUOTA"); 1338 return -EINVAL; 1339 } 1340 #endif 1341 1342 if (!IS_ENABLED(CONFIG_UNICODE) && f2fs_sb_has_casefold(sbi)) { 1343 f2fs_err(sbi, 1344 "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE"); 1345 return -EINVAL; 1346 } 1347 1348 /* 1349 * The BLKZONED feature indicates that the drive was formatted with 1350 * zone alignment optimization. This is optional for host-aware 1351 * devices, but mandatory for host-managed zoned block devices. 1352 */ 1353 if (f2fs_sb_has_blkzoned(sbi)) { 1354 #ifdef CONFIG_BLK_DEV_ZONED 1355 if (F2FS_OPTION(sbi).discard_unit != 1356 DISCARD_UNIT_SECTION) { 1357 f2fs_info(sbi, "Zoned block device doesn't need small discard, set discard_unit=section by default"); 1358 F2FS_OPTION(sbi).discard_unit = 1359 DISCARD_UNIT_SECTION; 1360 } 1361 1362 if (F2FS_OPTION(sbi).fs_mode != FS_MODE_LFS) { 1363 f2fs_info(sbi, "Only lfs mode is allowed with zoned block device feature"); 1364 return -EINVAL; 1365 } 1366 #else 1367 f2fs_err(sbi, "Zoned block device support is not enabled"); 1368 return -EINVAL; 1369 #endif 1370 } 1371 1372 #ifdef CONFIG_F2FS_FS_COMPRESSION 1373 if (f2fs_test_compress_extension(sbi)) { 1374 f2fs_err(sbi, "invalid compress or nocompress extension"); 1375 return -EINVAL; 1376 } 1377 #endif 1378 1379 if (test_opt(sbi, INLINE_XATTR_SIZE)) { 1380 int min_size, max_size; 1381 1382 if (!f2fs_sb_has_extra_attr(sbi) || 1383 !f2fs_sb_has_flexible_inline_xattr(sbi)) { 1384 f2fs_err(sbi, "extra_attr or flexible_inline_xattr feature is off"); 1385 return -EINVAL; 1386 } 1387 if (!test_opt(sbi, INLINE_XATTR)) { 1388 f2fs_err(sbi, "inline_xattr_size option should be set with inline_xattr option"); 1389 return -EINVAL; 1390 } 1391 1392 min_size = MIN_INLINE_XATTR_SIZE; 1393 max_size = MAX_INLINE_XATTR_SIZE; 1394 1395 if (F2FS_OPTION(sbi).inline_xattr_size < min_size || 1396 F2FS_OPTION(sbi).inline_xattr_size > max_size) { 1397 f2fs_err(sbi, "inline xattr size is out of range: %d ~ %d", 1398 min_size, max_size); 1399 return -EINVAL; 1400 } 1401 } 1402 1403 if (test_opt(sbi, ATGC) && f2fs_lfs_mode(sbi)) { 1404 f2fs_err(sbi, "LFS is not compatible with ATGC"); 1405 return -EINVAL; 1406 } 1407 1408 if (f2fs_is_readonly(sbi) && test_opt(sbi, FLUSH_MERGE)) { 1409 f2fs_err(sbi, "FLUSH_MERGE not compatible with readonly mode"); 1410 return -EINVAL; 1411 } 1412 1413 if (f2fs_sb_has_readonly(sbi) && !f2fs_readonly(sbi->sb)) { 1414 f2fs_err(sbi, "Allow to mount readonly mode only"); 1415 return -EROFS; 1416 } 1417 1418 if (test_opt(sbi, NORECOVERY) && !f2fs_readonly(sbi->sb)) { 1419 f2fs_err(sbi, "norecovery requires readonly mount"); 1420 return -EINVAL; 1421 } 1422 1423 return 0; 1424 } 1425 f2fs_alloc_inode(struct super_block * sb)1426 static struct inode *f2fs_alloc_inode(struct super_block *sb) 1427 { 1428 struct f2fs_inode_info *fi; 1429 1430 if (time_to_inject(F2FS_SB(sb), FAULT_SLAB_ALLOC)) 1431 return NULL; 1432 1433 fi = alloc_inode_sb(sb, f2fs_inode_cachep, GFP_F2FS_ZERO); 1434 if (!fi) 1435 return NULL; 1436 1437 init_once((void *) fi); 1438 1439 /* Initialize f2fs-specific inode info */ 1440 atomic_set(&fi->dirty_pages, 0); 1441 atomic_set(&fi->i_compr_blocks, 0); 1442 init_f2fs_rwsem(&fi->i_sem); 1443 spin_lock_init(&fi->i_size_lock); 1444 INIT_LIST_HEAD(&fi->dirty_list); 1445 INIT_LIST_HEAD(&fi->gdirty_list); 1446 INIT_LIST_HEAD(&fi->gdonate_list); 1447 init_f2fs_rwsem(&fi->i_gc_rwsem[READ]); 1448 init_f2fs_rwsem(&fi->i_gc_rwsem[WRITE]); 1449 init_f2fs_rwsem(&fi->i_xattr_sem); 1450 1451 /* Will be used by directory only */ 1452 fi->i_dir_level = F2FS_SB(sb)->dir_level; 1453 1454 return &fi->vfs_inode; 1455 } 1456 f2fs_drop_inode(struct inode * inode)1457 static int f2fs_drop_inode(struct inode *inode) 1458 { 1459 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1460 int ret; 1461 1462 /* 1463 * during filesystem shutdown, if checkpoint is disabled, 1464 * drop useless meta/node dirty pages. 1465 */ 1466 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) { 1467 if (inode->i_ino == F2FS_NODE_INO(sbi) || 1468 inode->i_ino == F2FS_META_INO(sbi)) { 1469 trace_f2fs_drop_inode(inode, 1); 1470 return 1; 1471 } 1472 } 1473 1474 /* 1475 * This is to avoid a deadlock condition like below. 1476 * writeback_single_inode(inode) 1477 * - f2fs_write_data_page 1478 * - f2fs_gc -> iput -> evict 1479 * - inode_wait_for_writeback(inode) 1480 */ 1481 if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) { 1482 if (!inode->i_nlink && !is_bad_inode(inode)) { 1483 /* to avoid evict_inode call simultaneously */ 1484 atomic_inc(&inode->i_count); 1485 spin_unlock(&inode->i_lock); 1486 1487 /* should remain fi->extent_tree for writepage */ 1488 f2fs_destroy_extent_node(inode); 1489 1490 sb_start_intwrite(inode->i_sb); 1491 f2fs_i_size_write(inode, 0); 1492 1493 f2fs_submit_merged_write_cond(F2FS_I_SB(inode), 1494 inode, NULL, 0, DATA); 1495 truncate_inode_pages_final(inode->i_mapping); 1496 1497 if (F2FS_HAS_BLOCKS(inode)) 1498 f2fs_truncate(inode); 1499 1500 sb_end_intwrite(inode->i_sb); 1501 1502 spin_lock(&inode->i_lock); 1503 atomic_dec(&inode->i_count); 1504 } 1505 trace_f2fs_drop_inode(inode, 0); 1506 return 0; 1507 } 1508 ret = generic_drop_inode(inode); 1509 if (!ret) 1510 ret = fscrypt_drop_inode(inode); 1511 trace_f2fs_drop_inode(inode, ret); 1512 return ret; 1513 } 1514 f2fs_inode_dirtied(struct inode * inode,bool sync)1515 int f2fs_inode_dirtied(struct inode *inode, bool sync) 1516 { 1517 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1518 int ret = 0; 1519 1520 spin_lock(&sbi->inode_lock[DIRTY_META]); 1521 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) { 1522 ret = 1; 1523 } else { 1524 set_inode_flag(inode, FI_DIRTY_INODE); 1525 stat_inc_dirty_inode(sbi, DIRTY_META); 1526 } 1527 if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) { 1528 list_add_tail(&F2FS_I(inode)->gdirty_list, 1529 &sbi->inode_list[DIRTY_META]); 1530 inc_page_count(sbi, F2FS_DIRTY_IMETA); 1531 } 1532 spin_unlock(&sbi->inode_lock[DIRTY_META]); 1533 1534 if (!ret && f2fs_is_atomic_file(inode)) 1535 set_inode_flag(inode, FI_ATOMIC_DIRTIED); 1536 1537 return ret; 1538 } 1539 f2fs_inode_synced(struct inode * inode)1540 void f2fs_inode_synced(struct inode *inode) 1541 { 1542 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1543 1544 spin_lock(&sbi->inode_lock[DIRTY_META]); 1545 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) { 1546 spin_unlock(&sbi->inode_lock[DIRTY_META]); 1547 return; 1548 } 1549 if (!list_empty(&F2FS_I(inode)->gdirty_list)) { 1550 list_del_init(&F2FS_I(inode)->gdirty_list); 1551 dec_page_count(sbi, F2FS_DIRTY_IMETA); 1552 } 1553 clear_inode_flag(inode, FI_DIRTY_INODE); 1554 clear_inode_flag(inode, FI_AUTO_RECOVER); 1555 stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META); 1556 spin_unlock(&sbi->inode_lock[DIRTY_META]); 1557 } 1558 1559 /* 1560 * f2fs_dirty_inode() is called from __mark_inode_dirty() 1561 * 1562 * We should call set_dirty_inode to write the dirty inode through write_inode. 1563 */ f2fs_dirty_inode(struct inode * inode,int flags)1564 static void f2fs_dirty_inode(struct inode *inode, int flags) 1565 { 1566 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1567 1568 if (inode->i_ino == F2FS_NODE_INO(sbi) || 1569 inode->i_ino == F2FS_META_INO(sbi)) 1570 return; 1571 1572 if (is_inode_flag_set(inode, FI_AUTO_RECOVER)) 1573 clear_inode_flag(inode, FI_AUTO_RECOVER); 1574 1575 f2fs_inode_dirtied(inode, false); 1576 } 1577 f2fs_free_inode(struct inode * inode)1578 static void f2fs_free_inode(struct inode *inode) 1579 { 1580 fscrypt_free_inode(inode); 1581 kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode)); 1582 } 1583 destroy_percpu_info(struct f2fs_sb_info * sbi)1584 static void destroy_percpu_info(struct f2fs_sb_info *sbi) 1585 { 1586 percpu_counter_destroy(&sbi->total_valid_inode_count); 1587 percpu_counter_destroy(&sbi->rf_node_block_count); 1588 percpu_counter_destroy(&sbi->alloc_valid_block_count); 1589 } 1590 destroy_device_list(struct f2fs_sb_info * sbi)1591 static void destroy_device_list(struct f2fs_sb_info *sbi) 1592 { 1593 int i; 1594 1595 for (i = 0; i < sbi->s_ndevs; i++) { 1596 if (i > 0) 1597 bdev_fput(FDEV(i).bdev_file); 1598 #ifdef CONFIG_BLK_DEV_ZONED 1599 kvfree(FDEV(i).blkz_seq); 1600 #endif 1601 } 1602 kvfree(sbi->devs); 1603 } 1604 f2fs_put_super(struct super_block * sb)1605 static void f2fs_put_super(struct super_block *sb) 1606 { 1607 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1608 int i; 1609 int err = 0; 1610 bool done; 1611 1612 /* unregister procfs/sysfs entries in advance to avoid race case */ 1613 f2fs_unregister_sysfs(sbi); 1614 1615 f2fs_quota_off_umount(sb); 1616 1617 /* prevent remaining shrinker jobs */ 1618 mutex_lock(&sbi->umount_mutex); 1619 1620 /* 1621 * flush all issued checkpoints and stop checkpoint issue thread. 1622 * after then, all checkpoints should be done by each process context. 1623 */ 1624 f2fs_stop_ckpt_thread(sbi); 1625 1626 /* 1627 * We don't need to do checkpoint when superblock is clean. 1628 * But, the previous checkpoint was not done by umount, it needs to do 1629 * clean checkpoint again. 1630 */ 1631 if ((is_sbi_flag_set(sbi, SBI_IS_DIRTY) || 1632 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))) { 1633 struct cp_control cpc = { 1634 .reason = CP_UMOUNT, 1635 }; 1636 stat_inc_cp_call_count(sbi, TOTAL_CALL); 1637 err = f2fs_write_checkpoint(sbi, &cpc); 1638 } 1639 1640 /* be sure to wait for any on-going discard commands */ 1641 done = f2fs_issue_discard_timeout(sbi); 1642 if (f2fs_realtime_discard_enable(sbi) && !sbi->discard_blks && done) { 1643 struct cp_control cpc = { 1644 .reason = CP_UMOUNT | CP_TRIMMED, 1645 }; 1646 stat_inc_cp_call_count(sbi, TOTAL_CALL); 1647 err = f2fs_write_checkpoint(sbi, &cpc); 1648 } 1649 1650 /* 1651 * normally superblock is clean, so we need to release this. 1652 * In addition, EIO will skip do checkpoint, we need this as well. 1653 */ 1654 f2fs_release_ino_entry(sbi, true); 1655 1656 f2fs_leave_shrinker(sbi); 1657 mutex_unlock(&sbi->umount_mutex); 1658 1659 /* our cp_error case, we can wait for any writeback page */ 1660 f2fs_flush_merged_writes(sbi); 1661 1662 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA); 1663 1664 if (err || f2fs_cp_error(sbi)) { 1665 truncate_inode_pages_final(NODE_MAPPING(sbi)); 1666 truncate_inode_pages_final(META_MAPPING(sbi)); 1667 } 1668 1669 for (i = 0; i < NR_COUNT_TYPE; i++) { 1670 if (!get_pages(sbi, i)) 1671 continue; 1672 f2fs_err(sbi, "detect filesystem reference count leak during " 1673 "umount, type: %d, count: %lld", i, get_pages(sbi, i)); 1674 f2fs_bug_on(sbi, 1); 1675 } 1676 1677 f2fs_bug_on(sbi, sbi->fsync_node_num); 1678 1679 f2fs_destroy_compress_inode(sbi); 1680 1681 iput(sbi->node_inode); 1682 sbi->node_inode = NULL; 1683 1684 iput(sbi->meta_inode); 1685 sbi->meta_inode = NULL; 1686 1687 /* 1688 * iput() can update stat information, if f2fs_write_checkpoint() 1689 * above failed with error. 1690 */ 1691 f2fs_destroy_stats(sbi); 1692 1693 /* destroy f2fs internal modules */ 1694 f2fs_destroy_node_manager(sbi); 1695 f2fs_destroy_segment_manager(sbi); 1696 1697 /* flush s_error_work before sbi destroy */ 1698 flush_work(&sbi->s_error_work); 1699 1700 f2fs_destroy_post_read_wq(sbi); 1701 1702 kvfree(sbi->ckpt); 1703 1704 kfree(sbi->raw_super); 1705 1706 f2fs_destroy_page_array_cache(sbi); 1707 f2fs_destroy_xattr_caches(sbi); 1708 #ifdef CONFIG_QUOTA 1709 for (i = 0; i < MAXQUOTAS; i++) 1710 kfree(F2FS_OPTION(sbi).s_qf_names[i]); 1711 #endif 1712 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy); 1713 destroy_percpu_info(sbi); 1714 f2fs_destroy_iostat(sbi); 1715 for (i = 0; i < NR_PAGE_TYPE; i++) 1716 kvfree(sbi->write_io[i]); 1717 #if IS_ENABLED(CONFIG_UNICODE) 1718 utf8_unload(sb->s_encoding); 1719 #endif 1720 } 1721 f2fs_sync_fs(struct super_block * sb,int sync)1722 int f2fs_sync_fs(struct super_block *sb, int sync) 1723 { 1724 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1725 int err = 0; 1726 1727 if (unlikely(f2fs_cp_error(sbi))) 1728 return 0; 1729 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) 1730 return 0; 1731 1732 trace_f2fs_sync_fs(sb, sync); 1733 1734 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 1735 return -EAGAIN; 1736 1737 if (sync) { 1738 stat_inc_cp_call_count(sbi, TOTAL_CALL); 1739 err = f2fs_issue_checkpoint(sbi); 1740 } 1741 1742 return err; 1743 } 1744 f2fs_freeze(struct super_block * sb)1745 static int f2fs_freeze(struct super_block *sb) 1746 { 1747 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1748 1749 if (f2fs_readonly(sb)) 1750 return 0; 1751 1752 /* IO error happened before */ 1753 if (unlikely(f2fs_cp_error(sbi))) 1754 return -EIO; 1755 1756 /* must be clean, since sync_filesystem() was already called */ 1757 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY)) 1758 return -EINVAL; 1759 1760 sbi->umount_lock_holder = current; 1761 1762 /* Let's flush checkpoints and stop the thread. */ 1763 f2fs_flush_ckpt_thread(sbi); 1764 1765 sbi->umount_lock_holder = NULL; 1766 1767 /* to avoid deadlock on f2fs_evict_inode->SB_FREEZE_FS */ 1768 set_sbi_flag(sbi, SBI_IS_FREEZING); 1769 return 0; 1770 } 1771 f2fs_unfreeze(struct super_block * sb)1772 static int f2fs_unfreeze(struct super_block *sb) 1773 { 1774 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1775 1776 /* 1777 * It will update discard_max_bytes of mounted lvm device to zero 1778 * after creating snapshot on this lvm device, let's drop all 1779 * remained discards. 1780 * We don't need to disable real-time discard because discard_max_bytes 1781 * will recover after removal of snapshot. 1782 */ 1783 if (test_opt(sbi, DISCARD) && !f2fs_hw_support_discard(sbi)) 1784 f2fs_issue_discard_timeout(sbi); 1785 1786 clear_sbi_flag(F2FS_SB(sb), SBI_IS_FREEZING); 1787 return 0; 1788 } 1789 1790 #ifdef CONFIG_QUOTA f2fs_statfs_project(struct super_block * sb,kprojid_t projid,struct kstatfs * buf)1791 static int f2fs_statfs_project(struct super_block *sb, 1792 kprojid_t projid, struct kstatfs *buf) 1793 { 1794 struct kqid qid; 1795 struct dquot *dquot; 1796 u64 limit; 1797 u64 curblock; 1798 1799 qid = make_kqid_projid(projid); 1800 dquot = dqget(sb, qid); 1801 if (IS_ERR(dquot)) 1802 return PTR_ERR(dquot); 1803 spin_lock(&dquot->dq_dqb_lock); 1804 1805 limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit, 1806 dquot->dq_dqb.dqb_bhardlimit); 1807 if (limit) 1808 limit >>= sb->s_blocksize_bits; 1809 1810 if (limit && buf->f_blocks > limit) { 1811 curblock = (dquot->dq_dqb.dqb_curspace + 1812 dquot->dq_dqb.dqb_rsvspace) >> sb->s_blocksize_bits; 1813 buf->f_blocks = limit; 1814 buf->f_bfree = buf->f_bavail = 1815 (buf->f_blocks > curblock) ? 1816 (buf->f_blocks - curblock) : 0; 1817 } 1818 1819 limit = min_not_zero(dquot->dq_dqb.dqb_isoftlimit, 1820 dquot->dq_dqb.dqb_ihardlimit); 1821 1822 if (limit && buf->f_files > limit) { 1823 buf->f_files = limit; 1824 buf->f_ffree = 1825 (buf->f_files > dquot->dq_dqb.dqb_curinodes) ? 1826 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0; 1827 } 1828 1829 spin_unlock(&dquot->dq_dqb_lock); 1830 dqput(dquot); 1831 return 0; 1832 } 1833 #endif 1834 f2fs_statfs(struct dentry * dentry,struct kstatfs * buf)1835 static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf) 1836 { 1837 struct super_block *sb = dentry->d_sb; 1838 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1839 u64 id = huge_encode_dev(sb->s_bdev->bd_dev); 1840 block_t total_count, user_block_count, start_count; 1841 u64 avail_node_count; 1842 unsigned int total_valid_node_count; 1843 1844 total_count = le64_to_cpu(sbi->raw_super->block_count); 1845 start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr); 1846 buf->f_type = F2FS_SUPER_MAGIC; 1847 buf->f_bsize = sbi->blocksize; 1848 1849 buf->f_blocks = total_count - start_count; 1850 1851 spin_lock(&sbi->stat_lock); 1852 if (sbi->carve_out) 1853 buf->f_blocks -= sbi->current_reserved_blocks; 1854 user_block_count = sbi->user_block_count; 1855 total_valid_node_count = valid_node_count(sbi); 1856 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM; 1857 buf->f_bfree = user_block_count - valid_user_blocks(sbi) - 1858 sbi->current_reserved_blocks; 1859 1860 if (unlikely(buf->f_bfree <= sbi->unusable_block_count)) 1861 buf->f_bfree = 0; 1862 else 1863 buf->f_bfree -= sbi->unusable_block_count; 1864 spin_unlock(&sbi->stat_lock); 1865 1866 if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks) 1867 buf->f_bavail = buf->f_bfree - 1868 F2FS_OPTION(sbi).root_reserved_blocks; 1869 else 1870 buf->f_bavail = 0; 1871 1872 if (avail_node_count > user_block_count) { 1873 buf->f_files = user_block_count; 1874 buf->f_ffree = buf->f_bavail; 1875 } else { 1876 buf->f_files = avail_node_count; 1877 buf->f_ffree = min(avail_node_count - total_valid_node_count, 1878 buf->f_bavail); 1879 } 1880 1881 buf->f_namelen = F2FS_NAME_LEN; 1882 buf->f_fsid = u64_to_fsid(id); 1883 1884 #ifdef CONFIG_QUOTA 1885 if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) && 1886 sb_has_quota_limits_enabled(sb, PRJQUOTA)) { 1887 f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf); 1888 } 1889 #endif 1890 return 0; 1891 } 1892 f2fs_show_quota_options(struct seq_file * seq,struct super_block * sb)1893 static inline void f2fs_show_quota_options(struct seq_file *seq, 1894 struct super_block *sb) 1895 { 1896 #ifdef CONFIG_QUOTA 1897 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1898 1899 if (F2FS_OPTION(sbi).s_jquota_fmt) { 1900 char *fmtname = ""; 1901 1902 switch (F2FS_OPTION(sbi).s_jquota_fmt) { 1903 case QFMT_VFS_OLD: 1904 fmtname = "vfsold"; 1905 break; 1906 case QFMT_VFS_V0: 1907 fmtname = "vfsv0"; 1908 break; 1909 case QFMT_VFS_V1: 1910 fmtname = "vfsv1"; 1911 break; 1912 } 1913 seq_printf(seq, ",jqfmt=%s", fmtname); 1914 } 1915 1916 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA]) 1917 seq_show_option(seq, "usrjquota", 1918 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]); 1919 1920 if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]) 1921 seq_show_option(seq, "grpjquota", 1922 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]); 1923 1924 if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) 1925 seq_show_option(seq, "prjjquota", 1926 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]); 1927 #endif 1928 } 1929 1930 #ifdef CONFIG_F2FS_FS_COMPRESSION f2fs_show_compress_options(struct seq_file * seq,struct super_block * sb)1931 static inline void f2fs_show_compress_options(struct seq_file *seq, 1932 struct super_block *sb) 1933 { 1934 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1935 char *algtype = ""; 1936 int i; 1937 1938 if (!f2fs_sb_has_compression(sbi)) 1939 return; 1940 1941 switch (F2FS_OPTION(sbi).compress_algorithm) { 1942 case COMPRESS_LZO: 1943 algtype = "lzo"; 1944 break; 1945 case COMPRESS_LZ4: 1946 algtype = "lz4"; 1947 break; 1948 case COMPRESS_ZSTD: 1949 algtype = "zstd"; 1950 break; 1951 case COMPRESS_LZORLE: 1952 algtype = "lzo-rle"; 1953 break; 1954 } 1955 seq_printf(seq, ",compress_algorithm=%s", algtype); 1956 1957 if (F2FS_OPTION(sbi).compress_level) 1958 seq_printf(seq, ":%d", F2FS_OPTION(sbi).compress_level); 1959 1960 seq_printf(seq, ",compress_log_size=%u", 1961 F2FS_OPTION(sbi).compress_log_size); 1962 1963 for (i = 0; i < F2FS_OPTION(sbi).compress_ext_cnt; i++) { 1964 seq_printf(seq, ",compress_extension=%s", 1965 F2FS_OPTION(sbi).extensions[i]); 1966 } 1967 1968 for (i = 0; i < F2FS_OPTION(sbi).nocompress_ext_cnt; i++) { 1969 seq_printf(seq, ",nocompress_extension=%s", 1970 F2FS_OPTION(sbi).noextensions[i]); 1971 } 1972 1973 if (F2FS_OPTION(sbi).compress_chksum) 1974 seq_puts(seq, ",compress_chksum"); 1975 1976 if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_FS) 1977 seq_printf(seq, ",compress_mode=%s", "fs"); 1978 else if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_USER) 1979 seq_printf(seq, ",compress_mode=%s", "user"); 1980 1981 if (test_opt(sbi, COMPRESS_CACHE)) 1982 seq_puts(seq, ",compress_cache"); 1983 } 1984 #endif 1985 f2fs_show_options(struct seq_file * seq,struct dentry * root)1986 static int f2fs_show_options(struct seq_file *seq, struct dentry *root) 1987 { 1988 struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb); 1989 1990 if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_SYNC) 1991 seq_printf(seq, ",background_gc=%s", "sync"); 1992 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_ON) 1993 seq_printf(seq, ",background_gc=%s", "on"); 1994 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF) 1995 seq_printf(seq, ",background_gc=%s", "off"); 1996 1997 if (test_opt(sbi, GC_MERGE)) 1998 seq_puts(seq, ",gc_merge"); 1999 else 2000 seq_puts(seq, ",nogc_merge"); 2001 2002 if (test_opt(sbi, DISABLE_ROLL_FORWARD)) 2003 seq_puts(seq, ",disable_roll_forward"); 2004 if (test_opt(sbi, NORECOVERY)) 2005 seq_puts(seq, ",norecovery"); 2006 if (test_opt(sbi, DISCARD)) { 2007 seq_puts(seq, ",discard"); 2008 if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_BLOCK) 2009 seq_printf(seq, ",discard_unit=%s", "block"); 2010 else if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SEGMENT) 2011 seq_printf(seq, ",discard_unit=%s", "segment"); 2012 else if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SECTION) 2013 seq_printf(seq, ",discard_unit=%s", "section"); 2014 } else { 2015 seq_puts(seq, ",nodiscard"); 2016 } 2017 #ifdef CONFIG_F2FS_FS_XATTR 2018 if (test_opt(sbi, XATTR_USER)) 2019 seq_puts(seq, ",user_xattr"); 2020 else 2021 seq_puts(seq, ",nouser_xattr"); 2022 if (test_opt(sbi, INLINE_XATTR)) 2023 seq_puts(seq, ",inline_xattr"); 2024 else 2025 seq_puts(seq, ",noinline_xattr"); 2026 if (test_opt(sbi, INLINE_XATTR_SIZE)) 2027 seq_printf(seq, ",inline_xattr_size=%u", 2028 F2FS_OPTION(sbi).inline_xattr_size); 2029 #endif 2030 #ifdef CONFIG_F2FS_FS_POSIX_ACL 2031 if (test_opt(sbi, POSIX_ACL)) 2032 seq_puts(seq, ",acl"); 2033 else 2034 seq_puts(seq, ",noacl"); 2035 #endif 2036 if (test_opt(sbi, DISABLE_EXT_IDENTIFY)) 2037 seq_puts(seq, ",disable_ext_identify"); 2038 if (test_opt(sbi, INLINE_DATA)) 2039 seq_puts(seq, ",inline_data"); 2040 else 2041 seq_puts(seq, ",noinline_data"); 2042 if (test_opt(sbi, INLINE_DENTRY)) 2043 seq_puts(seq, ",inline_dentry"); 2044 else 2045 seq_puts(seq, ",noinline_dentry"); 2046 if (test_opt(sbi, FLUSH_MERGE)) 2047 seq_puts(seq, ",flush_merge"); 2048 else 2049 seq_puts(seq, ",noflush_merge"); 2050 if (test_opt(sbi, NOBARRIER)) 2051 seq_puts(seq, ",nobarrier"); 2052 else 2053 seq_puts(seq, ",barrier"); 2054 if (test_opt(sbi, FASTBOOT)) 2055 seq_puts(seq, ",fastboot"); 2056 if (test_opt(sbi, READ_EXTENT_CACHE)) 2057 seq_puts(seq, ",extent_cache"); 2058 else 2059 seq_puts(seq, ",noextent_cache"); 2060 if (test_opt(sbi, AGE_EXTENT_CACHE)) 2061 seq_puts(seq, ",age_extent_cache"); 2062 if (test_opt(sbi, DATA_FLUSH)) 2063 seq_puts(seq, ",data_flush"); 2064 2065 seq_puts(seq, ",mode="); 2066 if (F2FS_OPTION(sbi).fs_mode == FS_MODE_ADAPTIVE) 2067 seq_puts(seq, "adaptive"); 2068 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_LFS) 2069 seq_puts(seq, "lfs"); 2070 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_SEG) 2071 seq_puts(seq, "fragment:segment"); 2072 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_BLK) 2073 seq_puts(seq, "fragment:block"); 2074 seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs); 2075 if (test_opt(sbi, RESERVE_ROOT)) 2076 seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u", 2077 F2FS_OPTION(sbi).root_reserved_blocks, 2078 from_kuid_munged(&init_user_ns, 2079 F2FS_OPTION(sbi).s_resuid), 2080 from_kgid_munged(&init_user_ns, 2081 F2FS_OPTION(sbi).s_resgid)); 2082 #ifdef CONFIG_F2FS_FAULT_INJECTION 2083 if (test_opt(sbi, FAULT_INJECTION)) { 2084 seq_printf(seq, ",fault_injection=%u", 2085 F2FS_OPTION(sbi).fault_info.inject_rate); 2086 seq_printf(seq, ",fault_type=%u", 2087 F2FS_OPTION(sbi).fault_info.inject_type); 2088 } 2089 #endif 2090 #ifdef CONFIG_QUOTA 2091 if (test_opt(sbi, QUOTA)) 2092 seq_puts(seq, ",quota"); 2093 if (test_opt(sbi, USRQUOTA)) 2094 seq_puts(seq, ",usrquota"); 2095 if (test_opt(sbi, GRPQUOTA)) 2096 seq_puts(seq, ",grpquota"); 2097 if (test_opt(sbi, PRJQUOTA)) 2098 seq_puts(seq, ",prjquota"); 2099 #endif 2100 f2fs_show_quota_options(seq, sbi->sb); 2101 2102 fscrypt_show_test_dummy_encryption(seq, ',', sbi->sb); 2103 2104 if (sbi->sb->s_flags & SB_INLINECRYPT) 2105 seq_puts(seq, ",inlinecrypt"); 2106 2107 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT) 2108 seq_printf(seq, ",alloc_mode=%s", "default"); 2109 else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE) 2110 seq_printf(seq, ",alloc_mode=%s", "reuse"); 2111 2112 if (test_opt(sbi, DISABLE_CHECKPOINT)) 2113 seq_printf(seq, ",checkpoint=disable:%u", 2114 F2FS_OPTION(sbi).unusable_cap); 2115 if (test_opt(sbi, MERGE_CHECKPOINT)) 2116 seq_puts(seq, ",checkpoint_merge"); 2117 else 2118 seq_puts(seq, ",nocheckpoint_merge"); 2119 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX) 2120 seq_printf(seq, ",fsync_mode=%s", "posix"); 2121 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) 2122 seq_printf(seq, ",fsync_mode=%s", "strict"); 2123 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER) 2124 seq_printf(seq, ",fsync_mode=%s", "nobarrier"); 2125 2126 #ifdef CONFIG_F2FS_FS_COMPRESSION 2127 f2fs_show_compress_options(seq, sbi->sb); 2128 #endif 2129 2130 if (test_opt(sbi, ATGC)) 2131 seq_puts(seq, ",atgc"); 2132 2133 if (F2FS_OPTION(sbi).memory_mode == MEMORY_MODE_NORMAL) 2134 seq_printf(seq, ",memory=%s", "normal"); 2135 else if (F2FS_OPTION(sbi).memory_mode == MEMORY_MODE_LOW) 2136 seq_printf(seq, ",memory=%s", "low"); 2137 2138 if (F2FS_OPTION(sbi).errors == MOUNT_ERRORS_READONLY) 2139 seq_printf(seq, ",errors=%s", "remount-ro"); 2140 else if (F2FS_OPTION(sbi).errors == MOUNT_ERRORS_CONTINUE) 2141 seq_printf(seq, ",errors=%s", "continue"); 2142 else if (F2FS_OPTION(sbi).errors == MOUNT_ERRORS_PANIC) 2143 seq_printf(seq, ",errors=%s", "panic"); 2144 2145 if (test_opt(sbi, NAT_BITS)) 2146 seq_puts(seq, ",nat_bits"); 2147 2148 return 0; 2149 } 2150 default_options(struct f2fs_sb_info * sbi,bool remount)2151 static void default_options(struct f2fs_sb_info *sbi, bool remount) 2152 { 2153 /* init some FS parameters */ 2154 if (!remount) { 2155 set_opt(sbi, READ_EXTENT_CACHE); 2156 clear_opt(sbi, DISABLE_CHECKPOINT); 2157 2158 if (f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) 2159 set_opt(sbi, DISCARD); 2160 2161 if (f2fs_sb_has_blkzoned(sbi)) 2162 F2FS_OPTION(sbi).discard_unit = DISCARD_UNIT_SECTION; 2163 else 2164 F2FS_OPTION(sbi).discard_unit = DISCARD_UNIT_BLOCK; 2165 } 2166 2167 if (f2fs_sb_has_readonly(sbi)) 2168 F2FS_OPTION(sbi).active_logs = NR_CURSEG_RO_TYPE; 2169 else 2170 F2FS_OPTION(sbi).active_logs = NR_CURSEG_PERSIST_TYPE; 2171 2172 F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS; 2173 if (le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_main) <= 2174 SMALL_VOLUME_SEGMENTS) 2175 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE; 2176 else 2177 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT; 2178 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX; 2179 F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID); 2180 F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID); 2181 if (f2fs_sb_has_compression(sbi)) { 2182 F2FS_OPTION(sbi).compress_algorithm = COMPRESS_LZ4; 2183 F2FS_OPTION(sbi).compress_log_size = MIN_COMPRESS_LOG_SIZE; 2184 F2FS_OPTION(sbi).compress_ext_cnt = 0; 2185 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS; 2186 } 2187 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON; 2188 F2FS_OPTION(sbi).memory_mode = MEMORY_MODE_NORMAL; 2189 F2FS_OPTION(sbi).errors = MOUNT_ERRORS_CONTINUE; 2190 2191 set_opt(sbi, INLINE_XATTR); 2192 set_opt(sbi, INLINE_DATA); 2193 set_opt(sbi, INLINE_DENTRY); 2194 set_opt(sbi, MERGE_CHECKPOINT); 2195 set_opt(sbi, LAZYTIME); 2196 F2FS_OPTION(sbi).unusable_cap = 0; 2197 if (!f2fs_is_readonly(sbi)) 2198 set_opt(sbi, FLUSH_MERGE); 2199 if (f2fs_sb_has_blkzoned(sbi)) 2200 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS; 2201 else 2202 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE; 2203 2204 #ifdef CONFIG_F2FS_FS_XATTR 2205 set_opt(sbi, XATTR_USER); 2206 #endif 2207 #ifdef CONFIG_F2FS_FS_POSIX_ACL 2208 set_opt(sbi, POSIX_ACL); 2209 #endif 2210 2211 f2fs_build_fault_attr(sbi, 0, 0); 2212 } 2213 2214 #ifdef CONFIG_QUOTA 2215 static int f2fs_enable_quotas(struct super_block *sb); 2216 #endif 2217 f2fs_disable_checkpoint(struct f2fs_sb_info * sbi)2218 static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi) 2219 { 2220 unsigned int s_flags = sbi->sb->s_flags; 2221 struct cp_control cpc; 2222 unsigned int gc_mode = sbi->gc_mode; 2223 int err = 0; 2224 int ret; 2225 block_t unusable; 2226 2227 if (s_flags & SB_RDONLY) { 2228 f2fs_err(sbi, "checkpoint=disable on readonly fs"); 2229 return -EINVAL; 2230 } 2231 sbi->sb->s_flags |= SB_ACTIVE; 2232 2233 /* check if we need more GC first */ 2234 unusable = f2fs_get_unusable_blocks(sbi); 2235 if (!f2fs_disable_cp_again(sbi, unusable)) 2236 goto skip_gc; 2237 2238 f2fs_update_time(sbi, DISABLE_TIME); 2239 2240 sbi->gc_mode = GC_URGENT_HIGH; 2241 2242 while (!f2fs_time_over(sbi, DISABLE_TIME)) { 2243 struct f2fs_gc_control gc_control = { 2244 .victim_segno = NULL_SEGNO, 2245 .init_gc_type = FG_GC, 2246 .should_migrate_blocks = false, 2247 .err_gc_skipped = true, 2248 .no_bg_gc = true, 2249 .nr_free_secs = 1 }; 2250 2251 f2fs_down_write(&sbi->gc_lock); 2252 stat_inc_gc_call_count(sbi, FOREGROUND); 2253 err = f2fs_gc(sbi, &gc_control); 2254 if (err == -ENODATA) { 2255 err = 0; 2256 break; 2257 } 2258 if (err && err != -EAGAIN) 2259 break; 2260 } 2261 2262 ret = sync_filesystem(sbi->sb); 2263 if (ret || err) { 2264 err = ret ? ret : err; 2265 goto restore_flag; 2266 } 2267 2268 unusable = f2fs_get_unusable_blocks(sbi); 2269 if (f2fs_disable_cp_again(sbi, unusable)) { 2270 err = -EAGAIN; 2271 goto restore_flag; 2272 } 2273 2274 skip_gc: 2275 f2fs_down_write(&sbi->gc_lock); 2276 cpc.reason = CP_PAUSE; 2277 set_sbi_flag(sbi, SBI_CP_DISABLED); 2278 stat_inc_cp_call_count(sbi, TOTAL_CALL); 2279 err = f2fs_write_checkpoint(sbi, &cpc); 2280 if (err) 2281 goto out_unlock; 2282 2283 spin_lock(&sbi->stat_lock); 2284 sbi->unusable_block_count = unusable; 2285 spin_unlock(&sbi->stat_lock); 2286 2287 out_unlock: 2288 f2fs_up_write(&sbi->gc_lock); 2289 restore_flag: 2290 sbi->gc_mode = gc_mode; 2291 sbi->sb->s_flags = s_flags; /* Restore SB_RDONLY status */ 2292 return err; 2293 } 2294 f2fs_enable_checkpoint(struct f2fs_sb_info * sbi)2295 static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi) 2296 { 2297 int retry = DEFAULT_RETRY_IO_COUNT; 2298 2299 /* we should flush all the data to keep data consistency */ 2300 do { 2301 sync_inodes_sb(sbi->sb); 2302 f2fs_io_schedule_timeout(DEFAULT_IO_TIMEOUT); 2303 } while (get_pages(sbi, F2FS_DIRTY_DATA) && retry--); 2304 2305 if (unlikely(retry < 0)) 2306 f2fs_warn(sbi, "checkpoint=enable has some unwritten data."); 2307 2308 f2fs_down_write(&sbi->gc_lock); 2309 f2fs_dirty_to_prefree(sbi); 2310 2311 clear_sbi_flag(sbi, SBI_CP_DISABLED); 2312 set_sbi_flag(sbi, SBI_IS_DIRTY); 2313 f2fs_up_write(&sbi->gc_lock); 2314 2315 f2fs_sync_fs(sbi->sb, 1); 2316 2317 /* Let's ensure there's no pending checkpoint anymore */ 2318 f2fs_flush_ckpt_thread(sbi); 2319 } 2320 f2fs_remount(struct super_block * sb,int * flags,char * data)2321 static int f2fs_remount(struct super_block *sb, int *flags, char *data) 2322 { 2323 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2324 struct f2fs_mount_info org_mount_opt; 2325 unsigned long old_sb_flags; 2326 int err; 2327 bool need_restart_gc = false, need_stop_gc = false; 2328 bool need_restart_flush = false, need_stop_flush = false; 2329 bool need_restart_discard = false, need_stop_discard = false; 2330 bool need_enable_checkpoint = false, need_disable_checkpoint = false; 2331 bool no_read_extent_cache = !test_opt(sbi, READ_EXTENT_CACHE); 2332 bool no_age_extent_cache = !test_opt(sbi, AGE_EXTENT_CACHE); 2333 bool enable_checkpoint = !test_opt(sbi, DISABLE_CHECKPOINT); 2334 bool no_atgc = !test_opt(sbi, ATGC); 2335 bool no_discard = !test_opt(sbi, DISCARD); 2336 bool no_compress_cache = !test_opt(sbi, COMPRESS_CACHE); 2337 bool block_unit_discard = f2fs_block_unit_discard(sbi); 2338 bool no_nat_bits = !test_opt(sbi, NAT_BITS); 2339 #ifdef CONFIG_QUOTA 2340 int i, j; 2341 #endif 2342 2343 /* 2344 * Save the old mount options in case we 2345 * need to restore them. 2346 */ 2347 org_mount_opt = sbi->mount_opt; 2348 old_sb_flags = sb->s_flags; 2349 2350 sbi->umount_lock_holder = current; 2351 2352 #ifdef CONFIG_QUOTA 2353 org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt; 2354 for (i = 0; i < MAXQUOTAS; i++) { 2355 if (F2FS_OPTION(sbi).s_qf_names[i]) { 2356 org_mount_opt.s_qf_names[i] = 2357 kstrdup(F2FS_OPTION(sbi).s_qf_names[i], 2358 GFP_KERNEL); 2359 if (!org_mount_opt.s_qf_names[i]) { 2360 for (j = 0; j < i; j++) 2361 kfree(org_mount_opt.s_qf_names[j]); 2362 return -ENOMEM; 2363 } 2364 } else { 2365 org_mount_opt.s_qf_names[i] = NULL; 2366 } 2367 } 2368 #endif 2369 2370 /* recover superblocks we couldn't write due to previous RO mount */ 2371 if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) { 2372 err = f2fs_commit_super(sbi, false); 2373 f2fs_info(sbi, "Try to recover all the superblocks, ret: %d", 2374 err); 2375 if (!err) 2376 clear_sbi_flag(sbi, SBI_NEED_SB_WRITE); 2377 } 2378 2379 default_options(sbi, true); 2380 2381 /* parse mount options */ 2382 err = parse_options(sbi, data, true); 2383 if (err) 2384 goto restore_opts; 2385 2386 #ifdef CONFIG_BLK_DEV_ZONED 2387 if (f2fs_sb_has_blkzoned(sbi) && 2388 sbi->max_open_zones < F2FS_OPTION(sbi).active_logs) { 2389 f2fs_err(sbi, 2390 "zoned: max open zones %u is too small, need at least %u open zones", 2391 sbi->max_open_zones, F2FS_OPTION(sbi).active_logs); 2392 err = -EINVAL; 2393 goto restore_opts; 2394 } 2395 #endif 2396 2397 err = f2fs_default_check(sbi); 2398 if (err) 2399 goto restore_opts; 2400 2401 /* flush outstanding errors before changing fs state */ 2402 flush_work(&sbi->s_error_work); 2403 2404 /* 2405 * Previous and new state of filesystem is RO, 2406 * so skip checking GC and FLUSH_MERGE conditions. 2407 */ 2408 if (f2fs_readonly(sb) && (*flags & SB_RDONLY)) 2409 goto skip; 2410 2411 if (f2fs_dev_is_readonly(sbi) && !(*flags & SB_RDONLY)) { 2412 err = -EROFS; 2413 goto restore_opts; 2414 } 2415 2416 #ifdef CONFIG_QUOTA 2417 if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) { 2418 err = dquot_suspend(sb, -1); 2419 if (err < 0) 2420 goto restore_opts; 2421 } else if (f2fs_readonly(sb) && !(*flags & SB_RDONLY)) { 2422 /* dquot_resume needs RW */ 2423 sb->s_flags &= ~SB_RDONLY; 2424 if (sb_any_quota_suspended(sb)) { 2425 dquot_resume(sb, -1); 2426 } else if (f2fs_sb_has_quota_ino(sbi)) { 2427 err = f2fs_enable_quotas(sb); 2428 if (err) 2429 goto restore_opts; 2430 } 2431 } 2432 #endif 2433 if (f2fs_lfs_mode(sbi) && !IS_F2FS_IPU_DISABLE(sbi)) { 2434 err = -EINVAL; 2435 f2fs_warn(sbi, "LFS is not compatible with IPU"); 2436 goto restore_opts; 2437 } 2438 2439 /* disallow enable atgc dynamically */ 2440 if (no_atgc == !!test_opt(sbi, ATGC)) { 2441 err = -EINVAL; 2442 f2fs_warn(sbi, "switch atgc option is not allowed"); 2443 goto restore_opts; 2444 } 2445 2446 /* disallow enable/disable extent_cache dynamically */ 2447 if (no_read_extent_cache == !!test_opt(sbi, READ_EXTENT_CACHE)) { 2448 err = -EINVAL; 2449 f2fs_warn(sbi, "switch extent_cache option is not allowed"); 2450 goto restore_opts; 2451 } 2452 /* disallow enable/disable age extent_cache dynamically */ 2453 if (no_age_extent_cache == !!test_opt(sbi, AGE_EXTENT_CACHE)) { 2454 err = -EINVAL; 2455 f2fs_warn(sbi, "switch age_extent_cache option is not allowed"); 2456 goto restore_opts; 2457 } 2458 2459 if (no_compress_cache == !!test_opt(sbi, COMPRESS_CACHE)) { 2460 err = -EINVAL; 2461 f2fs_warn(sbi, "switch compress_cache option is not allowed"); 2462 goto restore_opts; 2463 } 2464 2465 if (block_unit_discard != f2fs_block_unit_discard(sbi)) { 2466 err = -EINVAL; 2467 f2fs_warn(sbi, "switch discard_unit option is not allowed"); 2468 goto restore_opts; 2469 } 2470 2471 if (no_nat_bits == !!test_opt(sbi, NAT_BITS)) { 2472 err = -EINVAL; 2473 f2fs_warn(sbi, "switch nat_bits option is not allowed"); 2474 goto restore_opts; 2475 } 2476 2477 if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) { 2478 err = -EINVAL; 2479 f2fs_warn(sbi, "disabling checkpoint not compatible with read-only"); 2480 goto restore_opts; 2481 } 2482 2483 /* 2484 * We stop the GC thread if FS is mounted as RO 2485 * or if background_gc = off is passed in mount 2486 * option. Also sync the filesystem. 2487 */ 2488 if ((*flags & SB_RDONLY) || 2489 (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF && 2490 !test_opt(sbi, GC_MERGE))) { 2491 if (sbi->gc_thread) { 2492 f2fs_stop_gc_thread(sbi); 2493 need_restart_gc = true; 2494 } 2495 } else if (!sbi->gc_thread) { 2496 err = f2fs_start_gc_thread(sbi); 2497 if (err) 2498 goto restore_opts; 2499 need_stop_gc = true; 2500 } 2501 2502 if (*flags & SB_RDONLY) { 2503 sync_inodes_sb(sb); 2504 2505 set_sbi_flag(sbi, SBI_IS_DIRTY); 2506 set_sbi_flag(sbi, SBI_IS_CLOSE); 2507 f2fs_sync_fs(sb, 1); 2508 clear_sbi_flag(sbi, SBI_IS_CLOSE); 2509 } 2510 2511 /* 2512 * We stop issue flush thread if FS is mounted as RO 2513 * or if flush_merge is not passed in mount option. 2514 */ 2515 if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) { 2516 clear_opt(sbi, FLUSH_MERGE); 2517 f2fs_destroy_flush_cmd_control(sbi, false); 2518 need_restart_flush = true; 2519 } else { 2520 err = f2fs_create_flush_cmd_control(sbi); 2521 if (err) 2522 goto restore_gc; 2523 need_stop_flush = true; 2524 } 2525 2526 if (no_discard == !!test_opt(sbi, DISCARD)) { 2527 if (test_opt(sbi, DISCARD)) { 2528 err = f2fs_start_discard_thread(sbi); 2529 if (err) 2530 goto restore_flush; 2531 need_stop_discard = true; 2532 } else { 2533 f2fs_stop_discard_thread(sbi); 2534 f2fs_issue_discard_timeout(sbi); 2535 need_restart_discard = true; 2536 } 2537 } 2538 2539 adjust_unusable_cap_perc(sbi); 2540 if (enable_checkpoint == !!test_opt(sbi, DISABLE_CHECKPOINT)) { 2541 if (test_opt(sbi, DISABLE_CHECKPOINT)) { 2542 err = f2fs_disable_checkpoint(sbi); 2543 if (err) 2544 goto restore_discard; 2545 need_enable_checkpoint = true; 2546 } else { 2547 f2fs_enable_checkpoint(sbi); 2548 need_disable_checkpoint = true; 2549 } 2550 } 2551 2552 /* 2553 * Place this routine at the end, since a new checkpoint would be 2554 * triggered while remount and we need to take care of it before 2555 * returning from remount. 2556 */ 2557 if ((*flags & SB_RDONLY) || test_opt(sbi, DISABLE_CHECKPOINT) || 2558 !test_opt(sbi, MERGE_CHECKPOINT)) { 2559 f2fs_stop_ckpt_thread(sbi); 2560 } else { 2561 /* Flush if the prevous checkpoint, if exists. */ 2562 f2fs_flush_ckpt_thread(sbi); 2563 2564 err = f2fs_start_ckpt_thread(sbi); 2565 if (err) { 2566 f2fs_err(sbi, 2567 "Failed to start F2FS issue_checkpoint_thread (%d)", 2568 err); 2569 goto restore_checkpoint; 2570 } 2571 } 2572 2573 skip: 2574 #ifdef CONFIG_QUOTA 2575 /* Release old quota file names */ 2576 for (i = 0; i < MAXQUOTAS; i++) 2577 kfree(org_mount_opt.s_qf_names[i]); 2578 #endif 2579 /* Update the POSIXACL Flag */ 2580 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) | 2581 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0); 2582 2583 limit_reserve_root(sbi); 2584 *flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME); 2585 2586 sbi->umount_lock_holder = NULL; 2587 return 0; 2588 restore_checkpoint: 2589 if (need_enable_checkpoint) { 2590 f2fs_enable_checkpoint(sbi); 2591 } else if (need_disable_checkpoint) { 2592 if (f2fs_disable_checkpoint(sbi)) 2593 f2fs_warn(sbi, "checkpoint has not been disabled"); 2594 } 2595 restore_discard: 2596 if (need_restart_discard) { 2597 if (f2fs_start_discard_thread(sbi)) 2598 f2fs_warn(sbi, "discard has been stopped"); 2599 } else if (need_stop_discard) { 2600 f2fs_stop_discard_thread(sbi); 2601 } 2602 restore_flush: 2603 if (need_restart_flush) { 2604 if (f2fs_create_flush_cmd_control(sbi)) 2605 f2fs_warn(sbi, "background flush thread has stopped"); 2606 } else if (need_stop_flush) { 2607 clear_opt(sbi, FLUSH_MERGE); 2608 f2fs_destroy_flush_cmd_control(sbi, false); 2609 } 2610 restore_gc: 2611 if (need_restart_gc) { 2612 if (f2fs_start_gc_thread(sbi)) 2613 f2fs_warn(sbi, "background gc thread has stopped"); 2614 } else if (need_stop_gc) { 2615 f2fs_stop_gc_thread(sbi); 2616 } 2617 restore_opts: 2618 #ifdef CONFIG_QUOTA 2619 F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt; 2620 for (i = 0; i < MAXQUOTAS; i++) { 2621 kfree(F2FS_OPTION(sbi).s_qf_names[i]); 2622 F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i]; 2623 } 2624 #endif 2625 sbi->mount_opt = org_mount_opt; 2626 sb->s_flags = old_sb_flags; 2627 2628 sbi->umount_lock_holder = NULL; 2629 return err; 2630 } 2631 f2fs_shutdown(struct super_block * sb)2632 static void f2fs_shutdown(struct super_block *sb) 2633 { 2634 f2fs_do_shutdown(F2FS_SB(sb), F2FS_GOING_DOWN_NOSYNC, false, false); 2635 } 2636 2637 #ifdef CONFIG_QUOTA f2fs_need_recovery(struct f2fs_sb_info * sbi)2638 static bool f2fs_need_recovery(struct f2fs_sb_info *sbi) 2639 { 2640 /* need to recovery orphan */ 2641 if (is_set_ckpt_flags(sbi, CP_ORPHAN_PRESENT_FLAG)) 2642 return true; 2643 /* need to recovery data */ 2644 if (test_opt(sbi, DISABLE_ROLL_FORWARD)) 2645 return false; 2646 if (test_opt(sbi, NORECOVERY)) 2647 return false; 2648 return !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG); 2649 } 2650 f2fs_recover_quota_begin(struct f2fs_sb_info * sbi)2651 static bool f2fs_recover_quota_begin(struct f2fs_sb_info *sbi) 2652 { 2653 bool readonly = f2fs_readonly(sbi->sb); 2654 2655 if (!f2fs_need_recovery(sbi)) 2656 return false; 2657 2658 /* it doesn't need to check f2fs_sb_has_readonly() */ 2659 if (f2fs_hw_is_readonly(sbi)) 2660 return false; 2661 2662 if (readonly) { 2663 sbi->sb->s_flags &= ~SB_RDONLY; 2664 set_sbi_flag(sbi, SBI_IS_WRITABLE); 2665 } 2666 2667 /* 2668 * Turn on quotas which were not enabled for read-only mounts if 2669 * filesystem has quota feature, so that they are updated correctly. 2670 */ 2671 return f2fs_enable_quota_files(sbi, readonly); 2672 } 2673 f2fs_recover_quota_end(struct f2fs_sb_info * sbi,bool quota_enabled)2674 static void f2fs_recover_quota_end(struct f2fs_sb_info *sbi, 2675 bool quota_enabled) 2676 { 2677 if (quota_enabled) 2678 f2fs_quota_off_umount(sbi->sb); 2679 2680 if (is_sbi_flag_set(sbi, SBI_IS_WRITABLE)) { 2681 clear_sbi_flag(sbi, SBI_IS_WRITABLE); 2682 sbi->sb->s_flags |= SB_RDONLY; 2683 } 2684 } 2685 2686 /* Read data from quotafile */ f2fs_quota_read(struct super_block * sb,int type,char * data,size_t len,loff_t off)2687 static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data, 2688 size_t len, loff_t off) 2689 { 2690 struct inode *inode = sb_dqopt(sb)->files[type]; 2691 struct address_space *mapping = inode->i_mapping; 2692 block_t blkidx = F2FS_BYTES_TO_BLK(off); 2693 int offset = off & (sb->s_blocksize - 1); 2694 int tocopy; 2695 size_t toread; 2696 loff_t i_size = i_size_read(inode); 2697 struct page *page; 2698 2699 if (off > i_size) 2700 return 0; 2701 2702 if (off + len > i_size) 2703 len = i_size - off; 2704 toread = len; 2705 while (toread > 0) { 2706 tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread); 2707 repeat: 2708 page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS); 2709 if (IS_ERR(page)) { 2710 if (PTR_ERR(page) == -ENOMEM) { 2711 memalloc_retry_wait(GFP_NOFS); 2712 goto repeat; 2713 } 2714 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2715 return PTR_ERR(page); 2716 } 2717 2718 lock_page(page); 2719 2720 if (unlikely(page->mapping != mapping)) { 2721 f2fs_put_page(page, 1); 2722 goto repeat; 2723 } 2724 if (unlikely(!PageUptodate(page))) { 2725 f2fs_put_page(page, 1); 2726 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2727 return -EIO; 2728 } 2729 2730 memcpy_from_page(data, page, offset, tocopy); 2731 f2fs_put_page(page, 1); 2732 2733 offset = 0; 2734 toread -= tocopy; 2735 data += tocopy; 2736 blkidx++; 2737 } 2738 return len; 2739 } 2740 2741 /* Write to quotafile */ f2fs_quota_write(struct super_block * sb,int type,const char * data,size_t len,loff_t off)2742 static ssize_t f2fs_quota_write(struct super_block *sb, int type, 2743 const char *data, size_t len, loff_t off) 2744 { 2745 struct inode *inode = sb_dqopt(sb)->files[type]; 2746 struct address_space *mapping = inode->i_mapping; 2747 const struct address_space_operations *a_ops = mapping->a_ops; 2748 int offset = off & (sb->s_blocksize - 1); 2749 size_t towrite = len; 2750 struct folio *folio; 2751 void *fsdata = NULL; 2752 int err = 0; 2753 int tocopy; 2754 2755 while (towrite > 0) { 2756 tocopy = min_t(unsigned long, sb->s_blocksize - offset, 2757 towrite); 2758 retry: 2759 err = a_ops->write_begin(NULL, mapping, off, tocopy, 2760 &folio, &fsdata); 2761 if (unlikely(err)) { 2762 if (err == -ENOMEM) { 2763 f2fs_io_schedule_timeout(DEFAULT_IO_TIMEOUT); 2764 goto retry; 2765 } 2766 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2767 break; 2768 } 2769 2770 memcpy_to_folio(folio, offset_in_folio(folio, off), data, tocopy); 2771 2772 a_ops->write_end(NULL, mapping, off, tocopy, tocopy, 2773 folio, fsdata); 2774 offset = 0; 2775 towrite -= tocopy; 2776 off += tocopy; 2777 data += tocopy; 2778 cond_resched(); 2779 } 2780 2781 if (len == towrite) 2782 return err; 2783 inode_set_mtime_to_ts(inode, inode_set_ctime_current(inode)); 2784 f2fs_mark_inode_dirty_sync(inode, false); 2785 return len - towrite; 2786 } 2787 f2fs_dquot_initialize(struct inode * inode)2788 int f2fs_dquot_initialize(struct inode *inode) 2789 { 2790 if (time_to_inject(F2FS_I_SB(inode), FAULT_DQUOT_INIT)) 2791 return -ESRCH; 2792 2793 return dquot_initialize(inode); 2794 } 2795 f2fs_get_dquots(struct inode * inode)2796 static struct dquot __rcu **f2fs_get_dquots(struct inode *inode) 2797 { 2798 return F2FS_I(inode)->i_dquot; 2799 } 2800 f2fs_get_reserved_space(struct inode * inode)2801 static qsize_t *f2fs_get_reserved_space(struct inode *inode) 2802 { 2803 return &F2FS_I(inode)->i_reserved_quota; 2804 } 2805 f2fs_quota_on_mount(struct f2fs_sb_info * sbi,int type)2806 static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type) 2807 { 2808 if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) { 2809 f2fs_err(sbi, "quota sysfile may be corrupted, skip loading it"); 2810 return 0; 2811 } 2812 2813 return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type], 2814 F2FS_OPTION(sbi).s_jquota_fmt, type); 2815 } 2816 f2fs_enable_quota_files(struct f2fs_sb_info * sbi,bool rdonly)2817 int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly) 2818 { 2819 int enabled = 0; 2820 int i, err; 2821 2822 if (f2fs_sb_has_quota_ino(sbi) && rdonly) { 2823 err = f2fs_enable_quotas(sbi->sb); 2824 if (err) { 2825 f2fs_err(sbi, "Cannot turn on quota_ino: %d", err); 2826 return 0; 2827 } 2828 return 1; 2829 } 2830 2831 for (i = 0; i < MAXQUOTAS; i++) { 2832 if (F2FS_OPTION(sbi).s_qf_names[i]) { 2833 err = f2fs_quota_on_mount(sbi, i); 2834 if (!err) { 2835 enabled = 1; 2836 continue; 2837 } 2838 f2fs_err(sbi, "Cannot turn on quotas: %d on %d", 2839 err, i); 2840 } 2841 } 2842 return enabled; 2843 } 2844 f2fs_quota_enable(struct super_block * sb,int type,int format_id,unsigned int flags)2845 static int f2fs_quota_enable(struct super_block *sb, int type, int format_id, 2846 unsigned int flags) 2847 { 2848 struct inode *qf_inode; 2849 unsigned long qf_inum; 2850 unsigned long qf_flag = F2FS_QUOTA_DEFAULT_FL; 2851 int err; 2852 2853 BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb))); 2854 2855 qf_inum = f2fs_qf_ino(sb, type); 2856 if (!qf_inum) 2857 return -EPERM; 2858 2859 qf_inode = f2fs_iget(sb, qf_inum); 2860 if (IS_ERR(qf_inode)) { 2861 f2fs_err(F2FS_SB(sb), "Bad quota inode %u:%lu", type, qf_inum); 2862 return PTR_ERR(qf_inode); 2863 } 2864 2865 /* Don't account quota for quota files to avoid recursion */ 2866 inode_lock(qf_inode); 2867 qf_inode->i_flags |= S_NOQUOTA; 2868 2869 if ((F2FS_I(qf_inode)->i_flags & qf_flag) != qf_flag) { 2870 F2FS_I(qf_inode)->i_flags |= qf_flag; 2871 f2fs_set_inode_flags(qf_inode); 2872 } 2873 inode_unlock(qf_inode); 2874 2875 err = dquot_load_quota_inode(qf_inode, type, format_id, flags); 2876 iput(qf_inode); 2877 return err; 2878 } 2879 f2fs_enable_quotas(struct super_block * sb)2880 static int f2fs_enable_quotas(struct super_block *sb) 2881 { 2882 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2883 int type, err = 0; 2884 unsigned long qf_inum; 2885 bool quota_mopt[MAXQUOTAS] = { 2886 test_opt(sbi, USRQUOTA), 2887 test_opt(sbi, GRPQUOTA), 2888 test_opt(sbi, PRJQUOTA), 2889 }; 2890 2891 if (is_set_ckpt_flags(F2FS_SB(sb), CP_QUOTA_NEED_FSCK_FLAG)) { 2892 f2fs_err(sbi, "quota file may be corrupted, skip loading it"); 2893 return 0; 2894 } 2895 2896 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE; 2897 2898 for (type = 0; type < MAXQUOTAS; type++) { 2899 qf_inum = f2fs_qf_ino(sb, type); 2900 if (qf_inum) { 2901 err = f2fs_quota_enable(sb, type, QFMT_VFS_V1, 2902 DQUOT_USAGE_ENABLED | 2903 (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0)); 2904 if (err) { 2905 f2fs_err(sbi, "Failed to enable quota tracking (type=%d, err=%d). Please run fsck to fix.", 2906 type, err); 2907 for (type--; type >= 0; type--) 2908 dquot_quota_off(sb, type); 2909 set_sbi_flag(F2FS_SB(sb), 2910 SBI_QUOTA_NEED_REPAIR); 2911 return err; 2912 } 2913 } 2914 } 2915 return 0; 2916 } 2917 f2fs_quota_sync_file(struct f2fs_sb_info * sbi,int type)2918 static int f2fs_quota_sync_file(struct f2fs_sb_info *sbi, int type) 2919 { 2920 struct quota_info *dqopt = sb_dqopt(sbi->sb); 2921 struct address_space *mapping = dqopt->files[type]->i_mapping; 2922 int ret = 0; 2923 2924 ret = dquot_writeback_dquots(sbi->sb, type); 2925 if (ret) 2926 goto out; 2927 2928 ret = filemap_fdatawrite(mapping); 2929 if (ret) 2930 goto out; 2931 2932 /* if we are using journalled quota */ 2933 if (is_journalled_quota(sbi)) 2934 goto out; 2935 2936 ret = filemap_fdatawait(mapping); 2937 2938 truncate_inode_pages(&dqopt->files[type]->i_data, 0); 2939 out: 2940 if (ret) 2941 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2942 return ret; 2943 } 2944 f2fs_do_quota_sync(struct super_block * sb,int type)2945 int f2fs_do_quota_sync(struct super_block *sb, int type) 2946 { 2947 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2948 struct quota_info *dqopt = sb_dqopt(sb); 2949 int cnt; 2950 int ret = 0; 2951 2952 /* 2953 * Now when everything is written we can discard the pagecache so 2954 * that userspace sees the changes. 2955 */ 2956 for (cnt = 0; cnt < MAXQUOTAS; cnt++) { 2957 2958 if (type != -1 && cnt != type) 2959 continue; 2960 2961 if (!sb_has_quota_active(sb, cnt)) 2962 continue; 2963 2964 if (!f2fs_sb_has_quota_ino(sbi)) 2965 inode_lock(dqopt->files[cnt]); 2966 2967 /* 2968 * do_quotactl 2969 * f2fs_quota_sync 2970 * f2fs_down_read(quota_sem) 2971 * dquot_writeback_dquots() 2972 * f2fs_dquot_commit 2973 * block_operation 2974 * f2fs_down_read(quota_sem) 2975 */ 2976 f2fs_lock_op(sbi); 2977 f2fs_down_read(&sbi->quota_sem); 2978 2979 ret = f2fs_quota_sync_file(sbi, cnt); 2980 2981 f2fs_up_read(&sbi->quota_sem); 2982 f2fs_unlock_op(sbi); 2983 2984 if (!f2fs_sb_has_quota_ino(sbi)) 2985 inode_unlock(dqopt->files[cnt]); 2986 2987 if (ret) 2988 break; 2989 } 2990 return ret; 2991 } 2992 f2fs_quota_sync(struct super_block * sb,int type)2993 static int f2fs_quota_sync(struct super_block *sb, int type) 2994 { 2995 int ret; 2996 2997 F2FS_SB(sb)->umount_lock_holder = current; 2998 ret = f2fs_do_quota_sync(sb, type); 2999 F2FS_SB(sb)->umount_lock_holder = NULL; 3000 return ret; 3001 } 3002 f2fs_quota_on(struct super_block * sb,int type,int format_id,const struct path * path)3003 static int f2fs_quota_on(struct super_block *sb, int type, int format_id, 3004 const struct path *path) 3005 { 3006 struct inode *inode; 3007 int err = 0; 3008 3009 /* if quota sysfile exists, deny enabling quota with specific file */ 3010 if (f2fs_sb_has_quota_ino(F2FS_SB(sb))) { 3011 f2fs_err(F2FS_SB(sb), "quota sysfile already exists"); 3012 return -EBUSY; 3013 } 3014 3015 if (path->dentry->d_sb != sb) 3016 return -EXDEV; 3017 3018 F2FS_SB(sb)->umount_lock_holder = current; 3019 3020 err = f2fs_do_quota_sync(sb, type); 3021 if (err) 3022 goto out; 3023 3024 inode = d_inode(path->dentry); 3025 3026 err = filemap_fdatawrite(inode->i_mapping); 3027 if (err) 3028 goto out; 3029 3030 err = filemap_fdatawait(inode->i_mapping); 3031 if (err) 3032 goto out; 3033 3034 err = dquot_quota_on(sb, type, format_id, path); 3035 if (err) 3036 goto out; 3037 3038 inode_lock(inode); 3039 F2FS_I(inode)->i_flags |= F2FS_QUOTA_DEFAULT_FL; 3040 f2fs_set_inode_flags(inode); 3041 inode_unlock(inode); 3042 f2fs_mark_inode_dirty_sync(inode, false); 3043 out: 3044 F2FS_SB(sb)->umount_lock_holder = NULL; 3045 return err; 3046 } 3047 __f2fs_quota_off(struct super_block * sb,int type)3048 static int __f2fs_quota_off(struct super_block *sb, int type) 3049 { 3050 struct inode *inode = sb_dqopt(sb)->files[type]; 3051 int err; 3052 3053 if (!inode || !igrab(inode)) 3054 return dquot_quota_off(sb, type); 3055 3056 err = f2fs_do_quota_sync(sb, type); 3057 if (err) 3058 goto out_put; 3059 3060 err = dquot_quota_off(sb, type); 3061 if (err || f2fs_sb_has_quota_ino(F2FS_SB(sb))) 3062 goto out_put; 3063 3064 inode_lock(inode); 3065 F2FS_I(inode)->i_flags &= ~F2FS_QUOTA_DEFAULT_FL; 3066 f2fs_set_inode_flags(inode); 3067 inode_unlock(inode); 3068 f2fs_mark_inode_dirty_sync(inode, false); 3069 out_put: 3070 iput(inode); 3071 return err; 3072 } 3073 f2fs_quota_off(struct super_block * sb,int type)3074 static int f2fs_quota_off(struct super_block *sb, int type) 3075 { 3076 struct f2fs_sb_info *sbi = F2FS_SB(sb); 3077 int err; 3078 3079 F2FS_SB(sb)->umount_lock_holder = current; 3080 3081 err = __f2fs_quota_off(sb, type); 3082 3083 /* 3084 * quotactl can shutdown journalled quota, result in inconsistence 3085 * between quota record and fs data by following updates, tag the 3086 * flag to let fsck be aware of it. 3087 */ 3088 if (is_journalled_quota(sbi)) 3089 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 3090 3091 F2FS_SB(sb)->umount_lock_holder = NULL; 3092 3093 return err; 3094 } 3095 f2fs_quota_off_umount(struct super_block * sb)3096 void f2fs_quota_off_umount(struct super_block *sb) 3097 { 3098 int type; 3099 int err; 3100 3101 for (type = 0; type < MAXQUOTAS; type++) { 3102 err = __f2fs_quota_off(sb, type); 3103 if (err) { 3104 int ret = dquot_quota_off(sb, type); 3105 3106 f2fs_err(F2FS_SB(sb), "Fail to turn off disk quota (type: %d, err: %d, ret:%d), Please run fsck to fix it.", 3107 type, err, ret); 3108 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 3109 } 3110 } 3111 /* 3112 * In case of checkpoint=disable, we must flush quota blocks. 3113 * This can cause NULL exception for node_inode in end_io, since 3114 * put_super already dropped it. 3115 */ 3116 sync_filesystem(sb); 3117 } 3118 f2fs_truncate_quota_inode_pages(struct super_block * sb)3119 static void f2fs_truncate_quota_inode_pages(struct super_block *sb) 3120 { 3121 struct quota_info *dqopt = sb_dqopt(sb); 3122 int type; 3123 3124 for (type = 0; type < MAXQUOTAS; type++) { 3125 if (!dqopt->files[type]) 3126 continue; 3127 f2fs_inode_synced(dqopt->files[type]); 3128 } 3129 } 3130 f2fs_dquot_commit(struct dquot * dquot)3131 static int f2fs_dquot_commit(struct dquot *dquot) 3132 { 3133 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb); 3134 int ret; 3135 3136 f2fs_down_read_nested(&sbi->quota_sem, SINGLE_DEPTH_NESTING); 3137 ret = dquot_commit(dquot); 3138 if (ret < 0) 3139 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 3140 f2fs_up_read(&sbi->quota_sem); 3141 return ret; 3142 } 3143 f2fs_dquot_acquire(struct dquot * dquot)3144 static int f2fs_dquot_acquire(struct dquot *dquot) 3145 { 3146 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb); 3147 int ret; 3148 3149 f2fs_down_read(&sbi->quota_sem); 3150 ret = dquot_acquire(dquot); 3151 if (ret < 0) 3152 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 3153 f2fs_up_read(&sbi->quota_sem); 3154 return ret; 3155 } 3156 f2fs_dquot_release(struct dquot * dquot)3157 static int f2fs_dquot_release(struct dquot *dquot) 3158 { 3159 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb); 3160 int ret = dquot_release(dquot); 3161 3162 if (ret < 0) 3163 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 3164 return ret; 3165 } 3166 f2fs_dquot_mark_dquot_dirty(struct dquot * dquot)3167 static int f2fs_dquot_mark_dquot_dirty(struct dquot *dquot) 3168 { 3169 struct super_block *sb = dquot->dq_sb; 3170 struct f2fs_sb_info *sbi = F2FS_SB(sb); 3171 int ret = dquot_mark_dquot_dirty(dquot); 3172 3173 /* if we are using journalled quota */ 3174 if (is_journalled_quota(sbi)) 3175 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH); 3176 3177 return ret; 3178 } 3179 f2fs_dquot_commit_info(struct super_block * sb,int type)3180 static int f2fs_dquot_commit_info(struct super_block *sb, int type) 3181 { 3182 struct f2fs_sb_info *sbi = F2FS_SB(sb); 3183 int ret = dquot_commit_info(sb, type); 3184 3185 if (ret < 0) 3186 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 3187 return ret; 3188 } 3189 f2fs_get_projid(struct inode * inode,kprojid_t * projid)3190 static int f2fs_get_projid(struct inode *inode, kprojid_t *projid) 3191 { 3192 *projid = F2FS_I(inode)->i_projid; 3193 return 0; 3194 } 3195 3196 static const struct dquot_operations f2fs_quota_operations = { 3197 .get_reserved_space = f2fs_get_reserved_space, 3198 .write_dquot = f2fs_dquot_commit, 3199 .acquire_dquot = f2fs_dquot_acquire, 3200 .release_dquot = f2fs_dquot_release, 3201 .mark_dirty = f2fs_dquot_mark_dquot_dirty, 3202 .write_info = f2fs_dquot_commit_info, 3203 .alloc_dquot = dquot_alloc, 3204 .destroy_dquot = dquot_destroy, 3205 .get_projid = f2fs_get_projid, 3206 .get_next_id = dquot_get_next_id, 3207 }; 3208 3209 static const struct quotactl_ops f2fs_quotactl_ops = { 3210 .quota_on = f2fs_quota_on, 3211 .quota_off = f2fs_quota_off, 3212 .quota_sync = f2fs_quota_sync, 3213 .get_state = dquot_get_state, 3214 .set_info = dquot_set_dqinfo, 3215 .get_dqblk = dquot_get_dqblk, 3216 .set_dqblk = dquot_set_dqblk, 3217 .get_nextdqblk = dquot_get_next_dqblk, 3218 }; 3219 #else f2fs_dquot_initialize(struct inode * inode)3220 int f2fs_dquot_initialize(struct inode *inode) 3221 { 3222 return 0; 3223 } 3224 f2fs_do_quota_sync(struct super_block * sb,int type)3225 int f2fs_do_quota_sync(struct super_block *sb, int type) 3226 { 3227 return 0; 3228 } 3229 f2fs_quota_off_umount(struct super_block * sb)3230 void f2fs_quota_off_umount(struct super_block *sb) 3231 { 3232 } 3233 #endif 3234 3235 static const struct super_operations f2fs_sops = { 3236 .alloc_inode = f2fs_alloc_inode, 3237 .free_inode = f2fs_free_inode, 3238 .drop_inode = f2fs_drop_inode, 3239 .write_inode = f2fs_write_inode, 3240 .dirty_inode = f2fs_dirty_inode, 3241 .show_options = f2fs_show_options, 3242 #ifdef CONFIG_QUOTA 3243 .quota_read = f2fs_quota_read, 3244 .quota_write = f2fs_quota_write, 3245 .get_dquots = f2fs_get_dquots, 3246 #endif 3247 .evict_inode = f2fs_evict_inode, 3248 .put_super = f2fs_put_super, 3249 .sync_fs = f2fs_sync_fs, 3250 .freeze_fs = f2fs_freeze, 3251 .unfreeze_fs = f2fs_unfreeze, 3252 .statfs = f2fs_statfs, 3253 .remount_fs = f2fs_remount, 3254 .shutdown = f2fs_shutdown, 3255 }; 3256 3257 #ifdef CONFIG_FS_ENCRYPTION f2fs_get_context(struct inode * inode,void * ctx,size_t len)3258 static int f2fs_get_context(struct inode *inode, void *ctx, size_t len) 3259 { 3260 return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION, 3261 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, 3262 ctx, len, NULL); 3263 } 3264 f2fs_set_context(struct inode * inode,const void * ctx,size_t len,void * fs_data)3265 static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len, 3266 void *fs_data) 3267 { 3268 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 3269 3270 /* 3271 * Encrypting the root directory is not allowed because fsck 3272 * expects lost+found directory to exist and remain unencrypted 3273 * if LOST_FOUND feature is enabled. 3274 * 3275 */ 3276 if (f2fs_sb_has_lost_found(sbi) && 3277 inode->i_ino == F2FS_ROOT_INO(sbi)) 3278 return -EPERM; 3279 3280 return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION, 3281 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, 3282 ctx, len, fs_data, XATTR_CREATE); 3283 } 3284 f2fs_get_dummy_policy(struct super_block * sb)3285 static const union fscrypt_policy *f2fs_get_dummy_policy(struct super_block *sb) 3286 { 3287 return F2FS_OPTION(F2FS_SB(sb)).dummy_enc_policy.policy; 3288 } 3289 f2fs_has_stable_inodes(struct super_block * sb)3290 static bool f2fs_has_stable_inodes(struct super_block *sb) 3291 { 3292 return true; 3293 } 3294 f2fs_get_devices(struct super_block * sb,unsigned int * num_devs)3295 static struct block_device **f2fs_get_devices(struct super_block *sb, 3296 unsigned int *num_devs) 3297 { 3298 struct f2fs_sb_info *sbi = F2FS_SB(sb); 3299 struct block_device **devs; 3300 int i; 3301 3302 if (!f2fs_is_multi_device(sbi)) 3303 return NULL; 3304 3305 devs = kmalloc_array(sbi->s_ndevs, sizeof(*devs), GFP_KERNEL); 3306 if (!devs) 3307 return ERR_PTR(-ENOMEM); 3308 3309 for (i = 0; i < sbi->s_ndevs; i++) 3310 devs[i] = FDEV(i).bdev; 3311 *num_devs = sbi->s_ndevs; 3312 return devs; 3313 } 3314 3315 static const struct fscrypt_operations f2fs_cryptops = { 3316 .needs_bounce_pages = 1, 3317 .has_32bit_inodes = 1, 3318 .supports_subblock_data_units = 1, 3319 .legacy_key_prefix = "f2fs:", 3320 .get_context = f2fs_get_context, 3321 .set_context = f2fs_set_context, 3322 .get_dummy_policy = f2fs_get_dummy_policy, 3323 .empty_dir = f2fs_empty_dir, 3324 .has_stable_inodes = f2fs_has_stable_inodes, 3325 .get_devices = f2fs_get_devices, 3326 }; 3327 #endif 3328 f2fs_nfs_get_inode(struct super_block * sb,u64 ino,u32 generation)3329 static struct inode *f2fs_nfs_get_inode(struct super_block *sb, 3330 u64 ino, u32 generation) 3331 { 3332 struct f2fs_sb_info *sbi = F2FS_SB(sb); 3333 struct inode *inode; 3334 3335 if (f2fs_check_nid_range(sbi, ino)) 3336 return ERR_PTR(-ESTALE); 3337 3338 /* 3339 * f2fs_iget isn't quite right if the inode is currently unallocated! 3340 * However f2fs_iget currently does appropriate checks to handle stale 3341 * inodes so everything is OK. 3342 */ 3343 inode = f2fs_iget(sb, ino); 3344 if (IS_ERR(inode)) 3345 return ERR_CAST(inode); 3346 if (unlikely(generation && inode->i_generation != generation)) { 3347 /* we didn't find the right inode.. */ 3348 iput(inode); 3349 return ERR_PTR(-ESTALE); 3350 } 3351 return inode; 3352 } 3353 f2fs_fh_to_dentry(struct super_block * sb,struct fid * fid,int fh_len,int fh_type)3354 static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid, 3355 int fh_len, int fh_type) 3356 { 3357 return generic_fh_to_dentry(sb, fid, fh_len, fh_type, 3358 f2fs_nfs_get_inode); 3359 } 3360 f2fs_fh_to_parent(struct super_block * sb,struct fid * fid,int fh_len,int fh_type)3361 static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid, 3362 int fh_len, int fh_type) 3363 { 3364 return generic_fh_to_parent(sb, fid, fh_len, fh_type, 3365 f2fs_nfs_get_inode); 3366 } 3367 3368 static const struct export_operations f2fs_export_ops = { 3369 .encode_fh = generic_encode_ino32_fh, 3370 .fh_to_dentry = f2fs_fh_to_dentry, 3371 .fh_to_parent = f2fs_fh_to_parent, 3372 .get_parent = f2fs_get_parent, 3373 }; 3374 max_file_blocks(struct inode * inode)3375 loff_t max_file_blocks(struct inode *inode) 3376 { 3377 loff_t result = 0; 3378 loff_t leaf_count; 3379 3380 /* 3381 * note: previously, result is equal to (DEF_ADDRS_PER_INODE - 3382 * DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more 3383 * space in inode.i_addr, it will be more safe to reassign 3384 * result as zero. 3385 */ 3386 3387 if (inode && f2fs_compressed_file(inode)) 3388 leaf_count = ADDRS_PER_BLOCK(inode); 3389 else 3390 leaf_count = DEF_ADDRS_PER_BLOCK; 3391 3392 /* two direct node blocks */ 3393 result += (leaf_count * 2); 3394 3395 /* two indirect node blocks */ 3396 leaf_count *= NIDS_PER_BLOCK; 3397 result += (leaf_count * 2); 3398 3399 /* one double indirect node block */ 3400 leaf_count *= NIDS_PER_BLOCK; 3401 result += leaf_count; 3402 3403 /* 3404 * For compatibility with FSCRYPT_POLICY_FLAG_IV_INO_LBLK_{64,32} with 3405 * a 4K crypto data unit, we must restrict the max filesize to what can 3406 * fit within U32_MAX + 1 data units. 3407 */ 3408 3409 result = umin(result, F2FS_BYTES_TO_BLK(((loff_t)U32_MAX + 1) * 4096)); 3410 3411 return result; 3412 } 3413 __f2fs_commit_super(struct f2fs_sb_info * sbi,struct folio * folio,pgoff_t index,bool update)3414 static int __f2fs_commit_super(struct f2fs_sb_info *sbi, struct folio *folio, 3415 pgoff_t index, bool update) 3416 { 3417 struct bio *bio; 3418 /* it's rare case, we can do fua all the time */ 3419 blk_opf_t opf = REQ_OP_WRITE | REQ_SYNC | REQ_PREFLUSH | REQ_FUA; 3420 int ret; 3421 3422 folio_lock(folio); 3423 folio_wait_writeback(folio); 3424 if (update) 3425 memcpy(F2FS_SUPER_BLOCK(folio, index), F2FS_RAW_SUPER(sbi), 3426 sizeof(struct f2fs_super_block)); 3427 folio_mark_dirty(folio); 3428 folio_clear_dirty_for_io(folio); 3429 folio_start_writeback(folio); 3430 folio_unlock(folio); 3431 3432 bio = bio_alloc(sbi->sb->s_bdev, 1, opf, GFP_NOFS); 3433 3434 /* it doesn't need to set crypto context for superblock update */ 3435 bio->bi_iter.bi_sector = SECTOR_FROM_BLOCK(folio_index(folio)); 3436 3437 if (!bio_add_folio(bio, folio, folio_size(folio), 0)) 3438 f2fs_bug_on(sbi, 1); 3439 3440 ret = submit_bio_wait(bio); 3441 folio_end_writeback(folio); 3442 3443 return ret; 3444 } 3445 sanity_check_area_boundary(struct f2fs_sb_info * sbi,struct folio * folio,pgoff_t index)3446 static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi, 3447 struct folio *folio, pgoff_t index) 3448 { 3449 struct f2fs_super_block *raw_super = F2FS_SUPER_BLOCK(folio, index); 3450 struct super_block *sb = sbi->sb; 3451 u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr); 3452 u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr); 3453 u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr); 3454 u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr); 3455 u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr); 3456 u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr); 3457 u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt); 3458 u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit); 3459 u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat); 3460 u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa); 3461 u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main); 3462 u32 segment_count = le32_to_cpu(raw_super->segment_count); 3463 u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); 3464 u64 main_end_blkaddr = main_blkaddr + 3465 ((u64)segment_count_main << log_blocks_per_seg); 3466 u64 seg_end_blkaddr = segment0_blkaddr + 3467 ((u64)segment_count << log_blocks_per_seg); 3468 3469 if (segment0_blkaddr != cp_blkaddr) { 3470 f2fs_info(sbi, "Mismatch start address, segment0(%u) cp_blkaddr(%u)", 3471 segment0_blkaddr, cp_blkaddr); 3472 return true; 3473 } 3474 3475 if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) != 3476 sit_blkaddr) { 3477 f2fs_info(sbi, "Wrong CP boundary, start(%u) end(%u) blocks(%u)", 3478 cp_blkaddr, sit_blkaddr, 3479 segment_count_ckpt << log_blocks_per_seg); 3480 return true; 3481 } 3482 3483 if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) != 3484 nat_blkaddr) { 3485 f2fs_info(sbi, "Wrong SIT boundary, start(%u) end(%u) blocks(%u)", 3486 sit_blkaddr, nat_blkaddr, 3487 segment_count_sit << log_blocks_per_seg); 3488 return true; 3489 } 3490 3491 if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) != 3492 ssa_blkaddr) { 3493 f2fs_info(sbi, "Wrong NAT boundary, start(%u) end(%u) blocks(%u)", 3494 nat_blkaddr, ssa_blkaddr, 3495 segment_count_nat << log_blocks_per_seg); 3496 return true; 3497 } 3498 3499 if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) != 3500 main_blkaddr) { 3501 f2fs_info(sbi, "Wrong SSA boundary, start(%u) end(%u) blocks(%u)", 3502 ssa_blkaddr, main_blkaddr, 3503 segment_count_ssa << log_blocks_per_seg); 3504 return true; 3505 } 3506 3507 if (main_end_blkaddr > seg_end_blkaddr) { 3508 f2fs_info(sbi, "Wrong MAIN_AREA boundary, start(%u) end(%llu) block(%u)", 3509 main_blkaddr, seg_end_blkaddr, 3510 segment_count_main << log_blocks_per_seg); 3511 return true; 3512 } else if (main_end_blkaddr < seg_end_blkaddr) { 3513 int err = 0; 3514 char *res; 3515 3516 /* fix in-memory information all the time */ 3517 raw_super->segment_count = cpu_to_le32((main_end_blkaddr - 3518 segment0_blkaddr) >> log_blocks_per_seg); 3519 3520 if (f2fs_readonly(sb) || f2fs_hw_is_readonly(sbi)) { 3521 set_sbi_flag(sbi, SBI_NEED_SB_WRITE); 3522 res = "internally"; 3523 } else { 3524 err = __f2fs_commit_super(sbi, folio, index, false); 3525 res = err ? "failed" : "done"; 3526 } 3527 f2fs_info(sbi, "Fix alignment : %s, start(%u) end(%llu) block(%u)", 3528 res, main_blkaddr, seg_end_blkaddr, 3529 segment_count_main << log_blocks_per_seg); 3530 if (err) 3531 return true; 3532 } 3533 return false; 3534 } 3535 sanity_check_raw_super(struct f2fs_sb_info * sbi,struct folio * folio,pgoff_t index)3536 static int sanity_check_raw_super(struct f2fs_sb_info *sbi, 3537 struct folio *folio, pgoff_t index) 3538 { 3539 block_t segment_count, segs_per_sec, secs_per_zone, segment_count_main; 3540 block_t total_sections, blocks_per_seg; 3541 struct f2fs_super_block *raw_super = F2FS_SUPER_BLOCK(folio, index); 3542 size_t crc_offset = 0; 3543 __u32 crc = 0; 3544 3545 if (le32_to_cpu(raw_super->magic) != F2FS_SUPER_MAGIC) { 3546 f2fs_info(sbi, "Magic Mismatch, valid(0x%x) - read(0x%x)", 3547 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic)); 3548 return -EINVAL; 3549 } 3550 3551 /* Check checksum_offset and crc in superblock */ 3552 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_SB_CHKSUM)) { 3553 crc_offset = le32_to_cpu(raw_super->checksum_offset); 3554 if (crc_offset != 3555 offsetof(struct f2fs_super_block, crc)) { 3556 f2fs_info(sbi, "Invalid SB checksum offset: %zu", 3557 crc_offset); 3558 return -EFSCORRUPTED; 3559 } 3560 crc = le32_to_cpu(raw_super->crc); 3561 if (!f2fs_crc_valid(sbi, crc, raw_super, crc_offset)) { 3562 f2fs_info(sbi, "Invalid SB checksum value: %u", crc); 3563 return -EFSCORRUPTED; 3564 } 3565 } 3566 3567 /* only support block_size equals to PAGE_SIZE */ 3568 if (le32_to_cpu(raw_super->log_blocksize) != F2FS_BLKSIZE_BITS) { 3569 f2fs_info(sbi, "Invalid log_blocksize (%u), supports only %u", 3570 le32_to_cpu(raw_super->log_blocksize), 3571 F2FS_BLKSIZE_BITS); 3572 return -EFSCORRUPTED; 3573 } 3574 3575 /* check log blocks per segment */ 3576 if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) { 3577 f2fs_info(sbi, "Invalid log blocks per segment (%u)", 3578 le32_to_cpu(raw_super->log_blocks_per_seg)); 3579 return -EFSCORRUPTED; 3580 } 3581 3582 /* Currently, support 512/1024/2048/4096/16K bytes sector size */ 3583 if (le32_to_cpu(raw_super->log_sectorsize) > 3584 F2FS_MAX_LOG_SECTOR_SIZE || 3585 le32_to_cpu(raw_super->log_sectorsize) < 3586 F2FS_MIN_LOG_SECTOR_SIZE) { 3587 f2fs_info(sbi, "Invalid log sectorsize (%u)", 3588 le32_to_cpu(raw_super->log_sectorsize)); 3589 return -EFSCORRUPTED; 3590 } 3591 if (le32_to_cpu(raw_super->log_sectors_per_block) + 3592 le32_to_cpu(raw_super->log_sectorsize) != 3593 F2FS_MAX_LOG_SECTOR_SIZE) { 3594 f2fs_info(sbi, "Invalid log sectors per block(%u) log sectorsize(%u)", 3595 le32_to_cpu(raw_super->log_sectors_per_block), 3596 le32_to_cpu(raw_super->log_sectorsize)); 3597 return -EFSCORRUPTED; 3598 } 3599 3600 segment_count = le32_to_cpu(raw_super->segment_count); 3601 segment_count_main = le32_to_cpu(raw_super->segment_count_main); 3602 segs_per_sec = le32_to_cpu(raw_super->segs_per_sec); 3603 secs_per_zone = le32_to_cpu(raw_super->secs_per_zone); 3604 total_sections = le32_to_cpu(raw_super->section_count); 3605 3606 /* blocks_per_seg should be 512, given the above check */ 3607 blocks_per_seg = BIT(le32_to_cpu(raw_super->log_blocks_per_seg)); 3608 3609 if (segment_count > F2FS_MAX_SEGMENT || 3610 segment_count < F2FS_MIN_SEGMENTS) { 3611 f2fs_info(sbi, "Invalid segment count (%u)", segment_count); 3612 return -EFSCORRUPTED; 3613 } 3614 3615 if (total_sections > segment_count_main || total_sections < 1 || 3616 segs_per_sec > segment_count || !segs_per_sec) { 3617 f2fs_info(sbi, "Invalid segment/section count (%u, %u x %u)", 3618 segment_count, total_sections, segs_per_sec); 3619 return -EFSCORRUPTED; 3620 } 3621 3622 if (segment_count_main != total_sections * segs_per_sec) { 3623 f2fs_info(sbi, "Invalid segment/section count (%u != %u * %u)", 3624 segment_count_main, total_sections, segs_per_sec); 3625 return -EFSCORRUPTED; 3626 } 3627 3628 if ((segment_count / segs_per_sec) < total_sections) { 3629 f2fs_info(sbi, "Small segment_count (%u < %u * %u)", 3630 segment_count, segs_per_sec, total_sections); 3631 return -EFSCORRUPTED; 3632 } 3633 3634 if (segment_count > (le64_to_cpu(raw_super->block_count) >> 9)) { 3635 f2fs_info(sbi, "Wrong segment_count / block_count (%u > %llu)", 3636 segment_count, le64_to_cpu(raw_super->block_count)); 3637 return -EFSCORRUPTED; 3638 } 3639 3640 if (RDEV(0).path[0]) { 3641 block_t dev_seg_count = le32_to_cpu(RDEV(0).total_segments); 3642 int i = 1; 3643 3644 while (i < MAX_DEVICES && RDEV(i).path[0]) { 3645 dev_seg_count += le32_to_cpu(RDEV(i).total_segments); 3646 i++; 3647 } 3648 if (segment_count != dev_seg_count) { 3649 f2fs_info(sbi, "Segment count (%u) mismatch with total segments from devices (%u)", 3650 segment_count, dev_seg_count); 3651 return -EFSCORRUPTED; 3652 } 3653 } else { 3654 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_BLKZONED) && 3655 !bdev_is_zoned(sbi->sb->s_bdev)) { 3656 f2fs_info(sbi, "Zoned block device path is missing"); 3657 return -EFSCORRUPTED; 3658 } 3659 } 3660 3661 if (secs_per_zone > total_sections || !secs_per_zone) { 3662 f2fs_info(sbi, "Wrong secs_per_zone / total_sections (%u, %u)", 3663 secs_per_zone, total_sections); 3664 return -EFSCORRUPTED; 3665 } 3666 if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION || 3667 raw_super->hot_ext_count > F2FS_MAX_EXTENSION || 3668 (le32_to_cpu(raw_super->extension_count) + 3669 raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) { 3670 f2fs_info(sbi, "Corrupted extension count (%u + %u > %u)", 3671 le32_to_cpu(raw_super->extension_count), 3672 raw_super->hot_ext_count, 3673 F2FS_MAX_EXTENSION); 3674 return -EFSCORRUPTED; 3675 } 3676 3677 if (le32_to_cpu(raw_super->cp_payload) >= 3678 (blocks_per_seg - F2FS_CP_PACKS - 3679 NR_CURSEG_PERSIST_TYPE)) { 3680 f2fs_info(sbi, "Insane cp_payload (%u >= %u)", 3681 le32_to_cpu(raw_super->cp_payload), 3682 blocks_per_seg - F2FS_CP_PACKS - 3683 NR_CURSEG_PERSIST_TYPE); 3684 return -EFSCORRUPTED; 3685 } 3686 3687 /* check reserved ino info */ 3688 if (le32_to_cpu(raw_super->node_ino) != 1 || 3689 le32_to_cpu(raw_super->meta_ino) != 2 || 3690 le32_to_cpu(raw_super->root_ino) != 3) { 3691 f2fs_info(sbi, "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)", 3692 le32_to_cpu(raw_super->node_ino), 3693 le32_to_cpu(raw_super->meta_ino), 3694 le32_to_cpu(raw_super->root_ino)); 3695 return -EFSCORRUPTED; 3696 } 3697 3698 /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */ 3699 if (sanity_check_area_boundary(sbi, folio, index)) 3700 return -EFSCORRUPTED; 3701 3702 return 0; 3703 } 3704 f2fs_sanity_check_ckpt(struct f2fs_sb_info * sbi)3705 int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi) 3706 { 3707 unsigned int total, fsmeta; 3708 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 3709 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 3710 unsigned int ovp_segments, reserved_segments; 3711 unsigned int main_segs, blocks_per_seg; 3712 unsigned int sit_segs, nat_segs; 3713 unsigned int sit_bitmap_size, nat_bitmap_size; 3714 unsigned int log_blocks_per_seg; 3715 unsigned int segment_count_main; 3716 unsigned int cp_pack_start_sum, cp_payload; 3717 block_t user_block_count, valid_user_blocks; 3718 block_t avail_node_count, valid_node_count; 3719 unsigned int nat_blocks, nat_bits_bytes, nat_bits_blocks; 3720 int i, j; 3721 3722 total = le32_to_cpu(raw_super->segment_count); 3723 fsmeta = le32_to_cpu(raw_super->segment_count_ckpt); 3724 sit_segs = le32_to_cpu(raw_super->segment_count_sit); 3725 fsmeta += sit_segs; 3726 nat_segs = le32_to_cpu(raw_super->segment_count_nat); 3727 fsmeta += nat_segs; 3728 fsmeta += le32_to_cpu(ckpt->rsvd_segment_count); 3729 fsmeta += le32_to_cpu(raw_super->segment_count_ssa); 3730 3731 if (unlikely(fsmeta >= total)) 3732 return 1; 3733 3734 ovp_segments = le32_to_cpu(ckpt->overprov_segment_count); 3735 reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count); 3736 3737 if (!f2fs_sb_has_readonly(sbi) && 3738 unlikely(fsmeta < F2FS_MIN_META_SEGMENTS || 3739 ovp_segments == 0 || reserved_segments == 0)) { 3740 f2fs_err(sbi, "Wrong layout: check mkfs.f2fs version"); 3741 return 1; 3742 } 3743 user_block_count = le64_to_cpu(ckpt->user_block_count); 3744 segment_count_main = le32_to_cpu(raw_super->segment_count_main) + 3745 (f2fs_sb_has_readonly(sbi) ? 1 : 0); 3746 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); 3747 if (!user_block_count || user_block_count >= 3748 segment_count_main << log_blocks_per_seg) { 3749 f2fs_err(sbi, "Wrong user_block_count: %u", 3750 user_block_count); 3751 return 1; 3752 } 3753 3754 valid_user_blocks = le64_to_cpu(ckpt->valid_block_count); 3755 if (valid_user_blocks > user_block_count) { 3756 f2fs_err(sbi, "Wrong valid_user_blocks: %u, user_block_count: %u", 3757 valid_user_blocks, user_block_count); 3758 return 1; 3759 } 3760 3761 valid_node_count = le32_to_cpu(ckpt->valid_node_count); 3762 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM; 3763 if (valid_node_count > avail_node_count) { 3764 f2fs_err(sbi, "Wrong valid_node_count: %u, avail_node_count: %u", 3765 valid_node_count, avail_node_count); 3766 return 1; 3767 } 3768 3769 main_segs = le32_to_cpu(raw_super->segment_count_main); 3770 blocks_per_seg = BLKS_PER_SEG(sbi); 3771 3772 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { 3773 if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs || 3774 le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg) 3775 return 1; 3776 3777 if (f2fs_sb_has_readonly(sbi)) 3778 goto check_data; 3779 3780 for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) { 3781 if (le32_to_cpu(ckpt->cur_node_segno[i]) == 3782 le32_to_cpu(ckpt->cur_node_segno[j])) { 3783 f2fs_err(sbi, "Node segment (%u, %u) has the same segno: %u", 3784 i, j, 3785 le32_to_cpu(ckpt->cur_node_segno[i])); 3786 return 1; 3787 } 3788 } 3789 } 3790 check_data: 3791 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) { 3792 if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs || 3793 le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg) 3794 return 1; 3795 3796 if (f2fs_sb_has_readonly(sbi)) 3797 goto skip_cross; 3798 3799 for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) { 3800 if (le32_to_cpu(ckpt->cur_data_segno[i]) == 3801 le32_to_cpu(ckpt->cur_data_segno[j])) { 3802 f2fs_err(sbi, "Data segment (%u, %u) has the same segno: %u", 3803 i, j, 3804 le32_to_cpu(ckpt->cur_data_segno[i])); 3805 return 1; 3806 } 3807 } 3808 } 3809 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { 3810 for (j = 0; j < NR_CURSEG_DATA_TYPE; j++) { 3811 if (le32_to_cpu(ckpt->cur_node_segno[i]) == 3812 le32_to_cpu(ckpt->cur_data_segno[j])) { 3813 f2fs_err(sbi, "Node segment (%u) and Data segment (%u) has the same segno: %u", 3814 i, j, 3815 le32_to_cpu(ckpt->cur_node_segno[i])); 3816 return 1; 3817 } 3818 } 3819 } 3820 skip_cross: 3821 sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize); 3822 nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize); 3823 3824 if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 || 3825 nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) { 3826 f2fs_err(sbi, "Wrong bitmap size: sit: %u, nat:%u", 3827 sit_bitmap_size, nat_bitmap_size); 3828 return 1; 3829 } 3830 3831 cp_pack_start_sum = __start_sum_addr(sbi); 3832 cp_payload = __cp_payload(sbi); 3833 if (cp_pack_start_sum < cp_payload + 1 || 3834 cp_pack_start_sum > blocks_per_seg - 1 - 3835 NR_CURSEG_PERSIST_TYPE) { 3836 f2fs_err(sbi, "Wrong cp_pack_start_sum: %u", 3837 cp_pack_start_sum); 3838 return 1; 3839 } 3840 3841 if (__is_set_ckpt_flags(ckpt, CP_LARGE_NAT_BITMAP_FLAG) && 3842 le32_to_cpu(ckpt->checksum_offset) != CP_MIN_CHKSUM_OFFSET) { 3843 f2fs_warn(sbi, "using deprecated layout of large_nat_bitmap, " 3844 "please run fsck v1.13.0 or higher to repair, chksum_offset: %u, " 3845 "fixed with patch: \"f2fs-tools: relocate chksum_offset for large_nat_bitmap feature\"", 3846 le32_to_cpu(ckpt->checksum_offset)); 3847 return 1; 3848 } 3849 3850 nat_blocks = nat_segs << log_blocks_per_seg; 3851 nat_bits_bytes = nat_blocks / BITS_PER_BYTE; 3852 nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8); 3853 if (__is_set_ckpt_flags(ckpt, CP_NAT_BITS_FLAG) && 3854 (cp_payload + F2FS_CP_PACKS + 3855 NR_CURSEG_PERSIST_TYPE + nat_bits_blocks >= blocks_per_seg)) { 3856 f2fs_warn(sbi, "Insane cp_payload: %u, nat_bits_blocks: %u)", 3857 cp_payload, nat_bits_blocks); 3858 return 1; 3859 } 3860 3861 if (unlikely(f2fs_cp_error(sbi))) { 3862 f2fs_err(sbi, "A bug case: need to run fsck"); 3863 return 1; 3864 } 3865 return 0; 3866 } 3867 init_sb_info(struct f2fs_sb_info * sbi)3868 static void init_sb_info(struct f2fs_sb_info *sbi) 3869 { 3870 struct f2fs_super_block *raw_super = sbi->raw_super; 3871 int i; 3872 3873 sbi->log_sectors_per_block = 3874 le32_to_cpu(raw_super->log_sectors_per_block); 3875 sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize); 3876 sbi->blocksize = BIT(sbi->log_blocksize); 3877 sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); 3878 sbi->blocks_per_seg = BIT(sbi->log_blocks_per_seg); 3879 sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec); 3880 sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone); 3881 sbi->total_sections = le32_to_cpu(raw_super->section_count); 3882 sbi->total_node_count = SEGS_TO_BLKS(sbi, 3883 ((le32_to_cpu(raw_super->segment_count_nat) / 2) * 3884 NAT_ENTRY_PER_BLOCK)); 3885 F2FS_ROOT_INO(sbi) = le32_to_cpu(raw_super->root_ino); 3886 F2FS_NODE_INO(sbi) = le32_to_cpu(raw_super->node_ino); 3887 F2FS_META_INO(sbi) = le32_to_cpu(raw_super->meta_ino); 3888 sbi->cur_victim_sec = NULL_SECNO; 3889 sbi->gc_mode = GC_NORMAL; 3890 sbi->next_victim_seg[BG_GC] = NULL_SEGNO; 3891 sbi->next_victim_seg[FG_GC] = NULL_SEGNO; 3892 sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH; 3893 sbi->migration_granularity = SEGS_PER_SEC(sbi); 3894 sbi->migration_window_granularity = f2fs_sb_has_blkzoned(sbi) ? 3895 DEF_MIGRATION_WINDOW_GRANULARITY_ZONED : SEGS_PER_SEC(sbi); 3896 sbi->seq_file_ra_mul = MIN_RA_MUL; 3897 sbi->max_fragment_chunk = DEF_FRAGMENT_SIZE; 3898 sbi->max_fragment_hole = DEF_FRAGMENT_SIZE; 3899 spin_lock_init(&sbi->gc_remaining_trials_lock); 3900 atomic64_set(&sbi->current_atomic_write, 0); 3901 3902 sbi->dir_level = DEF_DIR_LEVEL; 3903 sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL; 3904 sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL; 3905 sbi->interval_time[DISCARD_TIME] = DEF_IDLE_INTERVAL; 3906 sbi->interval_time[GC_TIME] = DEF_IDLE_INTERVAL; 3907 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_INTERVAL; 3908 sbi->interval_time[UMOUNT_DISCARD_TIMEOUT] = 3909 DEF_UMOUNT_DISCARD_TIMEOUT; 3910 clear_sbi_flag(sbi, SBI_NEED_FSCK); 3911 3912 for (i = 0; i < NR_COUNT_TYPE; i++) 3913 atomic_set(&sbi->nr_pages[i], 0); 3914 3915 for (i = 0; i < META; i++) 3916 atomic_set(&sbi->wb_sync_req[i], 0); 3917 3918 INIT_LIST_HEAD(&sbi->s_list); 3919 mutex_init(&sbi->umount_mutex); 3920 init_f2fs_rwsem(&sbi->io_order_lock); 3921 spin_lock_init(&sbi->cp_lock); 3922 3923 sbi->dirty_device = 0; 3924 spin_lock_init(&sbi->dev_lock); 3925 3926 init_f2fs_rwsem(&sbi->sb_lock); 3927 init_f2fs_rwsem(&sbi->pin_sem); 3928 } 3929 init_percpu_info(struct f2fs_sb_info * sbi)3930 static int init_percpu_info(struct f2fs_sb_info *sbi) 3931 { 3932 int err; 3933 3934 err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL); 3935 if (err) 3936 return err; 3937 3938 err = percpu_counter_init(&sbi->rf_node_block_count, 0, GFP_KERNEL); 3939 if (err) 3940 goto err_valid_block; 3941 3942 err = percpu_counter_init(&sbi->total_valid_inode_count, 0, 3943 GFP_KERNEL); 3944 if (err) 3945 goto err_node_block; 3946 return 0; 3947 3948 err_node_block: 3949 percpu_counter_destroy(&sbi->rf_node_block_count); 3950 err_valid_block: 3951 percpu_counter_destroy(&sbi->alloc_valid_block_count); 3952 return err; 3953 } 3954 3955 #ifdef CONFIG_BLK_DEV_ZONED 3956 3957 struct f2fs_report_zones_args { 3958 struct f2fs_sb_info *sbi; 3959 struct f2fs_dev_info *dev; 3960 }; 3961 f2fs_report_zone_cb(struct blk_zone * zone,unsigned int idx,void * data)3962 static int f2fs_report_zone_cb(struct blk_zone *zone, unsigned int idx, 3963 void *data) 3964 { 3965 struct f2fs_report_zones_args *rz_args = data; 3966 block_t unusable_blocks = (zone->len - zone->capacity) >> 3967 F2FS_LOG_SECTORS_PER_BLOCK; 3968 3969 if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL) 3970 return 0; 3971 3972 set_bit(idx, rz_args->dev->blkz_seq); 3973 if (!rz_args->sbi->unusable_blocks_per_sec) { 3974 rz_args->sbi->unusable_blocks_per_sec = unusable_blocks; 3975 return 0; 3976 } 3977 if (rz_args->sbi->unusable_blocks_per_sec != unusable_blocks) { 3978 f2fs_err(rz_args->sbi, "F2FS supports single zone capacity\n"); 3979 return -EINVAL; 3980 } 3981 return 0; 3982 } 3983 init_blkz_info(struct f2fs_sb_info * sbi,int devi)3984 static int init_blkz_info(struct f2fs_sb_info *sbi, int devi) 3985 { 3986 struct block_device *bdev = FDEV(devi).bdev; 3987 sector_t nr_sectors = bdev_nr_sectors(bdev); 3988 struct f2fs_report_zones_args rep_zone_arg; 3989 u64 zone_sectors; 3990 unsigned int max_open_zones; 3991 int ret; 3992 3993 if (!f2fs_sb_has_blkzoned(sbi)) 3994 return 0; 3995 3996 if (bdev_is_zoned(FDEV(devi).bdev)) { 3997 max_open_zones = bdev_max_open_zones(bdev); 3998 if (max_open_zones && (max_open_zones < sbi->max_open_zones)) 3999 sbi->max_open_zones = max_open_zones; 4000 if (sbi->max_open_zones < F2FS_OPTION(sbi).active_logs) { 4001 f2fs_err(sbi, 4002 "zoned: max open zones %u is too small, need at least %u open zones", 4003 sbi->max_open_zones, F2FS_OPTION(sbi).active_logs); 4004 return -EINVAL; 4005 } 4006 } 4007 4008 zone_sectors = bdev_zone_sectors(bdev); 4009 if (sbi->blocks_per_blkz && sbi->blocks_per_blkz != 4010 SECTOR_TO_BLOCK(zone_sectors)) 4011 return -EINVAL; 4012 sbi->blocks_per_blkz = SECTOR_TO_BLOCK(zone_sectors); 4013 FDEV(devi).nr_blkz = div_u64(SECTOR_TO_BLOCK(nr_sectors), 4014 sbi->blocks_per_blkz); 4015 if (nr_sectors & (zone_sectors - 1)) 4016 FDEV(devi).nr_blkz++; 4017 4018 FDEV(devi).blkz_seq = f2fs_kvzalloc(sbi, 4019 BITS_TO_LONGS(FDEV(devi).nr_blkz) 4020 * sizeof(unsigned long), 4021 GFP_KERNEL); 4022 if (!FDEV(devi).blkz_seq) 4023 return -ENOMEM; 4024 4025 rep_zone_arg.sbi = sbi; 4026 rep_zone_arg.dev = &FDEV(devi); 4027 4028 ret = blkdev_report_zones(bdev, 0, BLK_ALL_ZONES, f2fs_report_zone_cb, 4029 &rep_zone_arg); 4030 if (ret < 0) 4031 return ret; 4032 return 0; 4033 } 4034 #endif 4035 4036 /* 4037 * Read f2fs raw super block. 4038 * Because we have two copies of super block, so read both of them 4039 * to get the first valid one. If any one of them is broken, we pass 4040 * them recovery flag back to the caller. 4041 */ read_raw_super_block(struct f2fs_sb_info * sbi,struct f2fs_super_block ** raw_super,int * valid_super_block,int * recovery)4042 static int read_raw_super_block(struct f2fs_sb_info *sbi, 4043 struct f2fs_super_block **raw_super, 4044 int *valid_super_block, int *recovery) 4045 { 4046 struct super_block *sb = sbi->sb; 4047 int block; 4048 struct folio *folio; 4049 struct f2fs_super_block *super; 4050 int err = 0; 4051 4052 super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL); 4053 if (!super) 4054 return -ENOMEM; 4055 4056 for (block = 0; block < 2; block++) { 4057 folio = read_mapping_folio(sb->s_bdev->bd_mapping, block, NULL); 4058 if (IS_ERR(folio)) { 4059 f2fs_err(sbi, "Unable to read %dth superblock", 4060 block + 1); 4061 err = PTR_ERR(folio); 4062 *recovery = 1; 4063 continue; 4064 } 4065 4066 /* sanity checking of raw super */ 4067 err = sanity_check_raw_super(sbi, folio, block); 4068 if (err) { 4069 f2fs_err(sbi, "Can't find valid F2FS filesystem in %dth superblock", 4070 block + 1); 4071 folio_put(folio); 4072 *recovery = 1; 4073 continue; 4074 } 4075 4076 if (!*raw_super) { 4077 memcpy(super, F2FS_SUPER_BLOCK(folio, block), 4078 sizeof(*super)); 4079 *valid_super_block = block; 4080 *raw_super = super; 4081 } 4082 folio_put(folio); 4083 } 4084 4085 /* No valid superblock */ 4086 if (!*raw_super) 4087 kfree(super); 4088 else 4089 err = 0; 4090 4091 return err; 4092 } 4093 f2fs_commit_super(struct f2fs_sb_info * sbi,bool recover)4094 int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover) 4095 { 4096 struct folio *folio; 4097 pgoff_t index; 4098 __u32 crc = 0; 4099 int err; 4100 4101 if ((recover && f2fs_readonly(sbi->sb)) || 4102 f2fs_hw_is_readonly(sbi)) { 4103 set_sbi_flag(sbi, SBI_NEED_SB_WRITE); 4104 return -EROFS; 4105 } 4106 4107 /* we should update superblock crc here */ 4108 if (!recover && f2fs_sb_has_sb_chksum(sbi)) { 4109 crc = f2fs_crc32(sbi, F2FS_RAW_SUPER(sbi), 4110 offsetof(struct f2fs_super_block, crc)); 4111 F2FS_RAW_SUPER(sbi)->crc = cpu_to_le32(crc); 4112 } 4113 4114 /* write back-up superblock first */ 4115 index = sbi->valid_super_block ? 0 : 1; 4116 folio = read_mapping_folio(sbi->sb->s_bdev->bd_mapping, index, NULL); 4117 if (IS_ERR(folio)) 4118 return PTR_ERR(folio); 4119 err = __f2fs_commit_super(sbi, folio, index, true); 4120 folio_put(folio); 4121 4122 /* if we are in recovery path, skip writing valid superblock */ 4123 if (recover || err) 4124 return err; 4125 4126 /* write current valid superblock */ 4127 index = sbi->valid_super_block; 4128 folio = read_mapping_folio(sbi->sb->s_bdev->bd_mapping, index, NULL); 4129 if (IS_ERR(folio)) 4130 return PTR_ERR(folio); 4131 err = __f2fs_commit_super(sbi, folio, index, true); 4132 folio_put(folio); 4133 return err; 4134 } 4135 save_stop_reason(struct f2fs_sb_info * sbi,unsigned char reason)4136 static void save_stop_reason(struct f2fs_sb_info *sbi, unsigned char reason) 4137 { 4138 unsigned long flags; 4139 4140 spin_lock_irqsave(&sbi->error_lock, flags); 4141 if (sbi->stop_reason[reason] < GENMASK(BITS_PER_BYTE - 1, 0)) 4142 sbi->stop_reason[reason]++; 4143 spin_unlock_irqrestore(&sbi->error_lock, flags); 4144 } 4145 f2fs_record_stop_reason(struct f2fs_sb_info * sbi)4146 static void f2fs_record_stop_reason(struct f2fs_sb_info *sbi) 4147 { 4148 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 4149 unsigned long flags; 4150 int err; 4151 4152 f2fs_down_write(&sbi->sb_lock); 4153 4154 spin_lock_irqsave(&sbi->error_lock, flags); 4155 if (sbi->error_dirty) { 4156 memcpy(F2FS_RAW_SUPER(sbi)->s_errors, sbi->errors, 4157 MAX_F2FS_ERRORS); 4158 sbi->error_dirty = false; 4159 } 4160 memcpy(raw_super->s_stop_reason, sbi->stop_reason, MAX_STOP_REASON); 4161 spin_unlock_irqrestore(&sbi->error_lock, flags); 4162 4163 err = f2fs_commit_super(sbi, false); 4164 4165 f2fs_up_write(&sbi->sb_lock); 4166 if (err) 4167 f2fs_err_ratelimited(sbi, 4168 "f2fs_commit_super fails to record stop_reason, err:%d", 4169 err); 4170 } 4171 f2fs_save_errors(struct f2fs_sb_info * sbi,unsigned char flag)4172 void f2fs_save_errors(struct f2fs_sb_info *sbi, unsigned char flag) 4173 { 4174 unsigned long flags; 4175 4176 spin_lock_irqsave(&sbi->error_lock, flags); 4177 if (!test_bit(flag, (unsigned long *)sbi->errors)) { 4178 set_bit(flag, (unsigned long *)sbi->errors); 4179 sbi->error_dirty = true; 4180 } 4181 spin_unlock_irqrestore(&sbi->error_lock, flags); 4182 } 4183 f2fs_update_errors(struct f2fs_sb_info * sbi)4184 static bool f2fs_update_errors(struct f2fs_sb_info *sbi) 4185 { 4186 unsigned long flags; 4187 bool need_update = false; 4188 4189 spin_lock_irqsave(&sbi->error_lock, flags); 4190 if (sbi->error_dirty) { 4191 memcpy(F2FS_RAW_SUPER(sbi)->s_errors, sbi->errors, 4192 MAX_F2FS_ERRORS); 4193 sbi->error_dirty = false; 4194 need_update = true; 4195 } 4196 spin_unlock_irqrestore(&sbi->error_lock, flags); 4197 4198 return need_update; 4199 } 4200 f2fs_record_errors(struct f2fs_sb_info * sbi,unsigned char error)4201 static void f2fs_record_errors(struct f2fs_sb_info *sbi, unsigned char error) 4202 { 4203 int err; 4204 4205 f2fs_down_write(&sbi->sb_lock); 4206 4207 if (!f2fs_update_errors(sbi)) 4208 goto out_unlock; 4209 4210 err = f2fs_commit_super(sbi, false); 4211 if (err) 4212 f2fs_err_ratelimited(sbi, 4213 "f2fs_commit_super fails to record errors:%u, err:%d", 4214 error, err); 4215 out_unlock: 4216 f2fs_up_write(&sbi->sb_lock); 4217 } 4218 f2fs_handle_error(struct f2fs_sb_info * sbi,unsigned char error)4219 void f2fs_handle_error(struct f2fs_sb_info *sbi, unsigned char error) 4220 { 4221 f2fs_save_errors(sbi, error); 4222 f2fs_record_errors(sbi, error); 4223 } 4224 f2fs_handle_error_async(struct f2fs_sb_info * sbi,unsigned char error)4225 void f2fs_handle_error_async(struct f2fs_sb_info *sbi, unsigned char error) 4226 { 4227 f2fs_save_errors(sbi, error); 4228 4229 if (!sbi->error_dirty) 4230 return; 4231 if (!test_bit(error, (unsigned long *)sbi->errors)) 4232 return; 4233 schedule_work(&sbi->s_error_work); 4234 } 4235 system_going_down(void)4236 static bool system_going_down(void) 4237 { 4238 return system_state == SYSTEM_HALT || system_state == SYSTEM_POWER_OFF 4239 || system_state == SYSTEM_RESTART; 4240 } 4241 f2fs_handle_critical_error(struct f2fs_sb_info * sbi,unsigned char reason)4242 void f2fs_handle_critical_error(struct f2fs_sb_info *sbi, unsigned char reason) 4243 { 4244 struct super_block *sb = sbi->sb; 4245 bool shutdown = reason == STOP_CP_REASON_SHUTDOWN; 4246 bool continue_fs = !shutdown && 4247 F2FS_OPTION(sbi).errors == MOUNT_ERRORS_CONTINUE; 4248 4249 set_ckpt_flags(sbi, CP_ERROR_FLAG); 4250 4251 if (!f2fs_hw_is_readonly(sbi)) { 4252 save_stop_reason(sbi, reason); 4253 4254 /* 4255 * always create an asynchronous task to record stop_reason 4256 * in order to avoid potential deadlock when running into 4257 * f2fs_record_stop_reason() synchronously. 4258 */ 4259 schedule_work(&sbi->s_error_work); 4260 } 4261 4262 /* 4263 * We force ERRORS_RO behavior when system is rebooting. Otherwise we 4264 * could panic during 'reboot -f' as the underlying device got already 4265 * disabled. 4266 */ 4267 if (F2FS_OPTION(sbi).errors == MOUNT_ERRORS_PANIC && 4268 !shutdown && !system_going_down() && 4269 !is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN)) 4270 panic("F2FS-fs (device %s): panic forced after error\n", 4271 sb->s_id); 4272 4273 if (shutdown) 4274 set_sbi_flag(sbi, SBI_IS_SHUTDOWN); 4275 else 4276 dump_stack(); 4277 4278 /* 4279 * Continue filesystem operators if errors=continue. Should not set 4280 * RO by shutdown, since RO bypasses thaw_super which can hang the 4281 * system. 4282 */ 4283 if (continue_fs || f2fs_readonly(sb) || shutdown) { 4284 f2fs_warn(sbi, "Stopped filesystem due to reason: %d", reason); 4285 return; 4286 } 4287 4288 f2fs_warn(sbi, "Remounting filesystem read-only"); 4289 4290 /* 4291 * We have already set CP_ERROR_FLAG flag to stop all updates 4292 * to filesystem, so it doesn't need to set SB_RDONLY flag here 4293 * because the flag should be set covered w/ sb->s_umount semaphore 4294 * via remount procedure, otherwise, it will confuse code like 4295 * freeze_super() which will lead to deadlocks and other problems. 4296 */ 4297 } 4298 f2fs_record_error_work(struct work_struct * work)4299 static void f2fs_record_error_work(struct work_struct *work) 4300 { 4301 struct f2fs_sb_info *sbi = container_of(work, 4302 struct f2fs_sb_info, s_error_work); 4303 4304 f2fs_record_stop_reason(sbi); 4305 } 4306 get_first_zoned_segno(struct f2fs_sb_info * sbi)4307 static inline unsigned int get_first_zoned_segno(struct f2fs_sb_info *sbi) 4308 { 4309 int devi; 4310 4311 for (devi = 0; devi < sbi->s_ndevs; devi++) 4312 if (bdev_is_zoned(FDEV(devi).bdev)) 4313 return GET_SEGNO(sbi, FDEV(devi).start_blk); 4314 return 0; 4315 } 4316 f2fs_scan_devices(struct f2fs_sb_info * sbi)4317 static int f2fs_scan_devices(struct f2fs_sb_info *sbi) 4318 { 4319 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 4320 unsigned int max_devices = MAX_DEVICES; 4321 unsigned int logical_blksize; 4322 blk_mode_t mode = sb_open_mode(sbi->sb->s_flags); 4323 int i; 4324 4325 /* Initialize single device information */ 4326 if (!RDEV(0).path[0]) { 4327 if (!bdev_is_zoned(sbi->sb->s_bdev)) 4328 return 0; 4329 max_devices = 1; 4330 } 4331 4332 /* 4333 * Initialize multiple devices information, or single 4334 * zoned block device information. 4335 */ 4336 sbi->devs = f2fs_kzalloc(sbi, 4337 array_size(max_devices, 4338 sizeof(struct f2fs_dev_info)), 4339 GFP_KERNEL); 4340 if (!sbi->devs) 4341 return -ENOMEM; 4342 4343 logical_blksize = bdev_logical_block_size(sbi->sb->s_bdev); 4344 sbi->aligned_blksize = true; 4345 #ifdef CONFIG_BLK_DEV_ZONED 4346 sbi->max_open_zones = UINT_MAX; 4347 sbi->blkzone_alloc_policy = BLKZONE_ALLOC_PRIOR_SEQ; 4348 #endif 4349 4350 for (i = 0; i < max_devices; i++) { 4351 if (i == 0) 4352 FDEV(0).bdev_file = sbi->sb->s_bdev_file; 4353 else if (!RDEV(i).path[0]) 4354 break; 4355 4356 if (max_devices > 1) { 4357 /* Multi-device mount */ 4358 memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN); 4359 FDEV(i).total_segments = 4360 le32_to_cpu(RDEV(i).total_segments); 4361 if (i == 0) { 4362 FDEV(i).start_blk = 0; 4363 FDEV(i).end_blk = FDEV(i).start_blk + 4364 SEGS_TO_BLKS(sbi, 4365 FDEV(i).total_segments) - 1 + 4366 le32_to_cpu(raw_super->segment0_blkaddr); 4367 } else { 4368 FDEV(i).start_blk = FDEV(i - 1).end_blk + 1; 4369 FDEV(i).end_blk = FDEV(i).start_blk + 4370 SEGS_TO_BLKS(sbi, 4371 FDEV(i).total_segments) - 1; 4372 FDEV(i).bdev_file = bdev_file_open_by_path( 4373 FDEV(i).path, mode, sbi->sb, NULL); 4374 } 4375 } 4376 if (IS_ERR(FDEV(i).bdev_file)) 4377 return PTR_ERR(FDEV(i).bdev_file); 4378 4379 FDEV(i).bdev = file_bdev(FDEV(i).bdev_file); 4380 /* to release errored devices */ 4381 sbi->s_ndevs = i + 1; 4382 4383 if (logical_blksize != bdev_logical_block_size(FDEV(i).bdev)) 4384 sbi->aligned_blksize = false; 4385 4386 #ifdef CONFIG_BLK_DEV_ZONED 4387 if (bdev_is_zoned(FDEV(i).bdev)) { 4388 if (!f2fs_sb_has_blkzoned(sbi)) { 4389 f2fs_err(sbi, "Zoned block device feature not enabled"); 4390 return -EINVAL; 4391 } 4392 if (init_blkz_info(sbi, i)) { 4393 f2fs_err(sbi, "Failed to initialize F2FS blkzone information"); 4394 return -EINVAL; 4395 } 4396 if (max_devices == 1) 4397 break; 4398 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: Host-managed)", 4399 i, FDEV(i).path, 4400 FDEV(i).total_segments, 4401 FDEV(i).start_blk, FDEV(i).end_blk); 4402 continue; 4403 } 4404 #endif 4405 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x", 4406 i, FDEV(i).path, 4407 FDEV(i).total_segments, 4408 FDEV(i).start_blk, FDEV(i).end_blk); 4409 } 4410 return 0; 4411 } 4412 f2fs_setup_casefold(struct f2fs_sb_info * sbi)4413 static int f2fs_setup_casefold(struct f2fs_sb_info *sbi) 4414 { 4415 #if IS_ENABLED(CONFIG_UNICODE) 4416 if (f2fs_sb_has_casefold(sbi) && !sbi->sb->s_encoding) { 4417 const struct f2fs_sb_encodings *encoding_info; 4418 struct unicode_map *encoding; 4419 __u16 encoding_flags; 4420 4421 encoding_info = f2fs_sb_read_encoding(sbi->raw_super); 4422 if (!encoding_info) { 4423 f2fs_err(sbi, 4424 "Encoding requested by superblock is unknown"); 4425 return -EINVAL; 4426 } 4427 4428 encoding_flags = le16_to_cpu(sbi->raw_super->s_encoding_flags); 4429 encoding = utf8_load(encoding_info->version); 4430 if (IS_ERR(encoding)) { 4431 f2fs_err(sbi, 4432 "can't mount with superblock charset: %s-%u.%u.%u " 4433 "not supported by the kernel. flags: 0x%x.", 4434 encoding_info->name, 4435 unicode_major(encoding_info->version), 4436 unicode_minor(encoding_info->version), 4437 unicode_rev(encoding_info->version), 4438 encoding_flags); 4439 return PTR_ERR(encoding); 4440 } 4441 f2fs_info(sbi, "Using encoding defined by superblock: " 4442 "%s-%u.%u.%u with flags 0x%hx", encoding_info->name, 4443 unicode_major(encoding_info->version), 4444 unicode_minor(encoding_info->version), 4445 unicode_rev(encoding_info->version), 4446 encoding_flags); 4447 4448 sbi->sb->s_encoding = encoding; 4449 sbi->sb->s_encoding_flags = encoding_flags; 4450 } 4451 #else 4452 if (f2fs_sb_has_casefold(sbi)) { 4453 f2fs_err(sbi, "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE"); 4454 return -EINVAL; 4455 } 4456 #endif 4457 return 0; 4458 } 4459 f2fs_tuning_parameters(struct f2fs_sb_info * sbi)4460 static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi) 4461 { 4462 /* adjust parameters according to the volume size */ 4463 if (MAIN_SEGS(sbi) <= SMALL_VOLUME_SEGMENTS) { 4464 if (f2fs_block_unit_discard(sbi)) 4465 SM_I(sbi)->dcc_info->discard_granularity = 4466 MIN_DISCARD_GRANULARITY; 4467 if (!f2fs_lfs_mode(sbi)) 4468 SM_I(sbi)->ipu_policy = BIT(F2FS_IPU_FORCE) | 4469 BIT(F2FS_IPU_HONOR_OPU_WRITE); 4470 } 4471 4472 sbi->readdir_ra = true; 4473 } 4474 f2fs_fill_super(struct super_block * sb,void * data,int silent)4475 static int f2fs_fill_super(struct super_block *sb, void *data, int silent) 4476 { 4477 struct f2fs_sb_info *sbi; 4478 struct f2fs_super_block *raw_super; 4479 struct inode *root; 4480 int err; 4481 bool skip_recovery = false, need_fsck = false; 4482 char *options = NULL; 4483 int recovery, i, valid_super_block; 4484 struct curseg_info *seg_i; 4485 int retry_cnt = 1; 4486 #ifdef CONFIG_QUOTA 4487 bool quota_enabled = false; 4488 #endif 4489 4490 try_onemore: 4491 err = -EINVAL; 4492 raw_super = NULL; 4493 valid_super_block = -1; 4494 recovery = 0; 4495 4496 /* allocate memory for f2fs-specific super block info */ 4497 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL); 4498 if (!sbi) 4499 return -ENOMEM; 4500 4501 sbi->sb = sb; 4502 4503 /* initialize locks within allocated memory */ 4504 init_f2fs_rwsem(&sbi->gc_lock); 4505 mutex_init(&sbi->writepages); 4506 init_f2fs_rwsem(&sbi->cp_global_sem); 4507 init_f2fs_rwsem(&sbi->node_write); 4508 init_f2fs_rwsem(&sbi->node_change); 4509 spin_lock_init(&sbi->stat_lock); 4510 init_f2fs_rwsem(&sbi->cp_rwsem); 4511 init_f2fs_rwsem(&sbi->quota_sem); 4512 init_waitqueue_head(&sbi->cp_wait); 4513 spin_lock_init(&sbi->error_lock); 4514 4515 for (i = 0; i < NR_INODE_TYPE; i++) { 4516 INIT_LIST_HEAD(&sbi->inode_list[i]); 4517 spin_lock_init(&sbi->inode_lock[i]); 4518 } 4519 mutex_init(&sbi->flush_lock); 4520 4521 /* set a block size */ 4522 if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) { 4523 f2fs_err(sbi, "unable to set blocksize"); 4524 goto free_sbi; 4525 } 4526 4527 err = read_raw_super_block(sbi, &raw_super, &valid_super_block, 4528 &recovery); 4529 if (err) 4530 goto free_sbi; 4531 4532 sb->s_fs_info = sbi; 4533 sbi->raw_super = raw_super; 4534 4535 INIT_WORK(&sbi->s_error_work, f2fs_record_error_work); 4536 memcpy(sbi->errors, raw_super->s_errors, MAX_F2FS_ERRORS); 4537 memcpy(sbi->stop_reason, raw_super->s_stop_reason, MAX_STOP_REASON); 4538 4539 /* precompute checksum seed for metadata */ 4540 if (f2fs_sb_has_inode_chksum(sbi)) 4541 sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid, 4542 sizeof(raw_super->uuid)); 4543 4544 default_options(sbi, false); 4545 /* parse mount options */ 4546 options = kstrdup((const char *)data, GFP_KERNEL); 4547 if (data && !options) { 4548 err = -ENOMEM; 4549 goto free_sb_buf; 4550 } 4551 4552 err = parse_options(sbi, options, false); 4553 if (err) 4554 goto free_options; 4555 4556 err = f2fs_default_check(sbi); 4557 if (err) 4558 goto free_options; 4559 4560 sb->s_maxbytes = max_file_blocks(NULL) << 4561 le32_to_cpu(raw_super->log_blocksize); 4562 sb->s_max_links = F2FS_LINK_MAX; 4563 4564 err = f2fs_setup_casefold(sbi); 4565 if (err) 4566 goto free_options; 4567 4568 #ifdef CONFIG_QUOTA 4569 sb->dq_op = &f2fs_quota_operations; 4570 sb->s_qcop = &f2fs_quotactl_ops; 4571 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ; 4572 4573 if (f2fs_sb_has_quota_ino(sbi)) { 4574 for (i = 0; i < MAXQUOTAS; i++) { 4575 if (f2fs_qf_ino(sbi->sb, i)) 4576 sbi->nquota_files++; 4577 } 4578 } 4579 #endif 4580 4581 sb->s_op = &f2fs_sops; 4582 #ifdef CONFIG_FS_ENCRYPTION 4583 sb->s_cop = &f2fs_cryptops; 4584 #endif 4585 #ifdef CONFIG_FS_VERITY 4586 sb->s_vop = &f2fs_verityops; 4587 #endif 4588 sb->s_xattr = f2fs_xattr_handlers; 4589 sb->s_export_op = &f2fs_export_ops; 4590 sb->s_magic = F2FS_SUPER_MAGIC; 4591 sb->s_time_gran = 1; 4592 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) | 4593 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0); 4594 if (test_opt(sbi, INLINECRYPT)) 4595 sb->s_flags |= SB_INLINECRYPT; 4596 4597 if (test_opt(sbi, LAZYTIME)) 4598 sb->s_flags |= SB_LAZYTIME; 4599 else 4600 sb->s_flags &= ~SB_LAZYTIME; 4601 4602 super_set_uuid(sb, (void *) raw_super->uuid, sizeof(raw_super->uuid)); 4603 super_set_sysfs_name_bdev(sb); 4604 sb->s_iflags |= SB_I_CGROUPWB; 4605 4606 /* init f2fs-specific super block info */ 4607 sbi->valid_super_block = valid_super_block; 4608 4609 /* disallow all the data/node/meta page writes */ 4610 set_sbi_flag(sbi, SBI_POR_DOING); 4611 4612 err = f2fs_init_write_merge_io(sbi); 4613 if (err) 4614 goto free_bio_info; 4615 4616 init_sb_info(sbi); 4617 4618 err = f2fs_init_iostat(sbi); 4619 if (err) 4620 goto free_bio_info; 4621 4622 err = init_percpu_info(sbi); 4623 if (err) 4624 goto free_iostat; 4625 4626 /* init per sbi slab cache */ 4627 err = f2fs_init_xattr_caches(sbi); 4628 if (err) 4629 goto free_percpu; 4630 err = f2fs_init_page_array_cache(sbi); 4631 if (err) 4632 goto free_xattr_cache; 4633 4634 /* get an inode for meta space */ 4635 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi)); 4636 if (IS_ERR(sbi->meta_inode)) { 4637 f2fs_err(sbi, "Failed to read F2FS meta data inode"); 4638 err = PTR_ERR(sbi->meta_inode); 4639 goto free_page_array_cache; 4640 } 4641 4642 err = f2fs_get_valid_checkpoint(sbi); 4643 if (err) { 4644 f2fs_err(sbi, "Failed to get valid F2FS checkpoint"); 4645 goto free_meta_inode; 4646 } 4647 4648 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_QUOTA_NEED_FSCK_FLAG)) 4649 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 4650 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_DISABLED_QUICK_FLAG)) { 4651 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK); 4652 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL; 4653 } 4654 4655 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FSCK_FLAG)) 4656 set_sbi_flag(sbi, SBI_NEED_FSCK); 4657 4658 /* Initialize device list */ 4659 err = f2fs_scan_devices(sbi); 4660 if (err) { 4661 f2fs_err(sbi, "Failed to find devices"); 4662 goto free_devices; 4663 } 4664 4665 err = f2fs_init_post_read_wq(sbi); 4666 if (err) { 4667 f2fs_err(sbi, "Failed to initialize post read workqueue"); 4668 goto free_devices; 4669 } 4670 4671 sbi->total_valid_node_count = 4672 le32_to_cpu(sbi->ckpt->valid_node_count); 4673 percpu_counter_set(&sbi->total_valid_inode_count, 4674 le32_to_cpu(sbi->ckpt->valid_inode_count)); 4675 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count); 4676 sbi->total_valid_block_count = 4677 le64_to_cpu(sbi->ckpt->valid_block_count); 4678 sbi->last_valid_block_count = sbi->total_valid_block_count; 4679 sbi->reserved_blocks = 0; 4680 sbi->current_reserved_blocks = 0; 4681 limit_reserve_root(sbi); 4682 adjust_unusable_cap_perc(sbi); 4683 4684 f2fs_init_extent_cache_info(sbi); 4685 4686 f2fs_init_ino_entry_info(sbi); 4687 4688 f2fs_init_fsync_node_info(sbi); 4689 4690 /* setup checkpoint request control and start checkpoint issue thread */ 4691 f2fs_init_ckpt_req_control(sbi); 4692 if (!f2fs_readonly(sb) && !test_opt(sbi, DISABLE_CHECKPOINT) && 4693 test_opt(sbi, MERGE_CHECKPOINT)) { 4694 err = f2fs_start_ckpt_thread(sbi); 4695 if (err) { 4696 f2fs_err(sbi, 4697 "Failed to start F2FS issue_checkpoint_thread (%d)", 4698 err); 4699 goto stop_ckpt_thread; 4700 } 4701 } 4702 4703 /* setup f2fs internal modules */ 4704 err = f2fs_build_segment_manager(sbi); 4705 if (err) { 4706 f2fs_err(sbi, "Failed to initialize F2FS segment manager (%d)", 4707 err); 4708 goto free_sm; 4709 } 4710 err = f2fs_build_node_manager(sbi); 4711 if (err) { 4712 f2fs_err(sbi, "Failed to initialize F2FS node manager (%d)", 4713 err); 4714 goto free_nm; 4715 } 4716 4717 /* For write statistics */ 4718 sbi->sectors_written_start = f2fs_get_sectors_written(sbi); 4719 4720 /* get segno of first zoned block device */ 4721 sbi->first_zoned_segno = get_first_zoned_segno(sbi); 4722 4723 /* Read accumulated write IO statistics if exists */ 4724 seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE); 4725 if (__exist_node_summaries(sbi)) 4726 sbi->kbytes_written = 4727 le64_to_cpu(seg_i->journal->info.kbytes_written); 4728 4729 f2fs_build_gc_manager(sbi); 4730 4731 err = f2fs_build_stats(sbi); 4732 if (err) 4733 goto free_nm; 4734 4735 /* get an inode for node space */ 4736 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi)); 4737 if (IS_ERR(sbi->node_inode)) { 4738 f2fs_err(sbi, "Failed to read node inode"); 4739 err = PTR_ERR(sbi->node_inode); 4740 goto free_stats; 4741 } 4742 4743 /* read root inode and dentry */ 4744 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi)); 4745 if (IS_ERR(root)) { 4746 f2fs_err(sbi, "Failed to read root inode"); 4747 err = PTR_ERR(root); 4748 goto free_node_inode; 4749 } 4750 if (!S_ISDIR(root->i_mode) || !root->i_blocks || 4751 !root->i_size || !root->i_nlink) { 4752 iput(root); 4753 err = -EINVAL; 4754 goto free_node_inode; 4755 } 4756 4757 generic_set_sb_d_ops(sb); 4758 sb->s_root = d_make_root(root); /* allocate root dentry */ 4759 if (!sb->s_root) { 4760 err = -ENOMEM; 4761 goto free_node_inode; 4762 } 4763 4764 err = f2fs_init_compress_inode(sbi); 4765 if (err) 4766 goto free_root_inode; 4767 4768 err = f2fs_register_sysfs(sbi); 4769 if (err) 4770 goto free_compress_inode; 4771 4772 sbi->umount_lock_holder = current; 4773 #ifdef CONFIG_QUOTA 4774 /* Enable quota usage during mount */ 4775 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) { 4776 err = f2fs_enable_quotas(sb); 4777 if (err) 4778 f2fs_err(sbi, "Cannot turn on quotas: error %d", err); 4779 } 4780 4781 quota_enabled = f2fs_recover_quota_begin(sbi); 4782 #endif 4783 /* if there are any orphan inodes, free them */ 4784 err = f2fs_recover_orphan_inodes(sbi); 4785 if (err) 4786 goto free_meta; 4787 4788 if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG))) { 4789 skip_recovery = true; 4790 goto reset_checkpoint; 4791 } 4792 4793 /* recover fsynced data */ 4794 if (!test_opt(sbi, DISABLE_ROLL_FORWARD) && 4795 !test_opt(sbi, NORECOVERY)) { 4796 /* 4797 * mount should be failed, when device has readonly mode, and 4798 * previous checkpoint was not done by clean system shutdown. 4799 */ 4800 if (f2fs_hw_is_readonly(sbi)) { 4801 if (!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) { 4802 err = f2fs_recover_fsync_data(sbi, true); 4803 if (err > 0) { 4804 err = -EROFS; 4805 f2fs_err(sbi, "Need to recover fsync data, but " 4806 "write access unavailable, please try " 4807 "mount w/ disable_roll_forward or norecovery"); 4808 } 4809 if (err < 0) 4810 goto free_meta; 4811 } 4812 f2fs_info(sbi, "write access unavailable, skipping recovery"); 4813 goto reset_checkpoint; 4814 } 4815 4816 if (need_fsck) 4817 set_sbi_flag(sbi, SBI_NEED_FSCK); 4818 4819 if (skip_recovery) 4820 goto reset_checkpoint; 4821 4822 err = f2fs_recover_fsync_data(sbi, false); 4823 if (err < 0) { 4824 if (err != -ENOMEM) 4825 skip_recovery = true; 4826 need_fsck = true; 4827 f2fs_err(sbi, "Cannot recover all fsync data errno=%d", 4828 err); 4829 goto free_meta; 4830 } 4831 } else { 4832 err = f2fs_recover_fsync_data(sbi, true); 4833 4834 if (!f2fs_readonly(sb) && err > 0) { 4835 err = -EINVAL; 4836 f2fs_err(sbi, "Need to recover fsync data"); 4837 goto free_meta; 4838 } 4839 } 4840 4841 reset_checkpoint: 4842 #ifdef CONFIG_QUOTA 4843 f2fs_recover_quota_end(sbi, quota_enabled); 4844 #endif 4845 /* 4846 * If the f2fs is not readonly and fsync data recovery succeeds, 4847 * write pointer consistency of cursegs and other zones are already 4848 * checked and fixed during recovery. However, if recovery fails, 4849 * write pointers are left untouched, and retry-mount should check 4850 * them here. 4851 */ 4852 if (skip_recovery) 4853 err = f2fs_check_and_fix_write_pointer(sbi); 4854 if (err) 4855 goto free_meta; 4856 4857 /* f2fs_recover_fsync_data() cleared this already */ 4858 clear_sbi_flag(sbi, SBI_POR_DOING); 4859 4860 err = f2fs_init_inmem_curseg(sbi); 4861 if (err) 4862 goto sync_free_meta; 4863 4864 if (test_opt(sbi, DISABLE_CHECKPOINT)) { 4865 err = f2fs_disable_checkpoint(sbi); 4866 if (err) 4867 goto sync_free_meta; 4868 } else if (is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)) { 4869 f2fs_enable_checkpoint(sbi); 4870 } 4871 4872 /* 4873 * If filesystem is not mounted as read-only then 4874 * do start the gc_thread. 4875 */ 4876 if ((F2FS_OPTION(sbi).bggc_mode != BGGC_MODE_OFF || 4877 test_opt(sbi, GC_MERGE)) && !f2fs_readonly(sb)) { 4878 /* After POR, we can run background GC thread.*/ 4879 err = f2fs_start_gc_thread(sbi); 4880 if (err) 4881 goto sync_free_meta; 4882 } 4883 kvfree(options); 4884 4885 /* recover broken superblock */ 4886 if (recovery) { 4887 err = f2fs_commit_super(sbi, true); 4888 f2fs_info(sbi, "Try to recover %dth superblock, ret: %d", 4889 sbi->valid_super_block ? 1 : 2, err); 4890 } 4891 4892 f2fs_join_shrinker(sbi); 4893 4894 f2fs_tuning_parameters(sbi); 4895 4896 f2fs_notice(sbi, "Mounted with checkpoint version = %llx", 4897 cur_cp_version(F2FS_CKPT(sbi))); 4898 f2fs_update_time(sbi, CP_TIME); 4899 f2fs_update_time(sbi, REQ_TIME); 4900 clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK); 4901 4902 sbi->umount_lock_holder = NULL; 4903 return 0; 4904 4905 sync_free_meta: 4906 /* safe to flush all the data */ 4907 sync_filesystem(sbi->sb); 4908 retry_cnt = 0; 4909 4910 free_meta: 4911 #ifdef CONFIG_QUOTA 4912 f2fs_truncate_quota_inode_pages(sb); 4913 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) 4914 f2fs_quota_off_umount(sbi->sb); 4915 #endif 4916 /* 4917 * Some dirty meta pages can be produced by f2fs_recover_orphan_inodes() 4918 * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg() 4919 * followed by f2fs_write_checkpoint() through f2fs_write_node_pages(), which 4920 * falls into an infinite loop in f2fs_sync_meta_pages(). 4921 */ 4922 truncate_inode_pages_final(META_MAPPING(sbi)); 4923 /* evict some inodes being cached by GC */ 4924 evict_inodes(sb); 4925 f2fs_unregister_sysfs(sbi); 4926 free_compress_inode: 4927 f2fs_destroy_compress_inode(sbi); 4928 free_root_inode: 4929 dput(sb->s_root); 4930 sb->s_root = NULL; 4931 free_node_inode: 4932 f2fs_release_ino_entry(sbi, true); 4933 truncate_inode_pages_final(NODE_MAPPING(sbi)); 4934 iput(sbi->node_inode); 4935 sbi->node_inode = NULL; 4936 free_stats: 4937 f2fs_destroy_stats(sbi); 4938 free_nm: 4939 /* stop discard thread before destroying node manager */ 4940 f2fs_stop_discard_thread(sbi); 4941 f2fs_destroy_node_manager(sbi); 4942 free_sm: 4943 f2fs_destroy_segment_manager(sbi); 4944 stop_ckpt_thread: 4945 f2fs_stop_ckpt_thread(sbi); 4946 /* flush s_error_work before sbi destroy */ 4947 flush_work(&sbi->s_error_work); 4948 f2fs_destroy_post_read_wq(sbi); 4949 free_devices: 4950 destroy_device_list(sbi); 4951 kvfree(sbi->ckpt); 4952 free_meta_inode: 4953 make_bad_inode(sbi->meta_inode); 4954 iput(sbi->meta_inode); 4955 sbi->meta_inode = NULL; 4956 free_page_array_cache: 4957 f2fs_destroy_page_array_cache(sbi); 4958 free_xattr_cache: 4959 f2fs_destroy_xattr_caches(sbi); 4960 free_percpu: 4961 destroy_percpu_info(sbi); 4962 free_iostat: 4963 f2fs_destroy_iostat(sbi); 4964 free_bio_info: 4965 for (i = 0; i < NR_PAGE_TYPE; i++) 4966 kvfree(sbi->write_io[i]); 4967 4968 #if IS_ENABLED(CONFIG_UNICODE) 4969 utf8_unload(sb->s_encoding); 4970 sb->s_encoding = NULL; 4971 #endif 4972 free_options: 4973 #ifdef CONFIG_QUOTA 4974 for (i = 0; i < MAXQUOTAS; i++) 4975 kfree(F2FS_OPTION(sbi).s_qf_names[i]); 4976 #endif 4977 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy); 4978 kvfree(options); 4979 free_sb_buf: 4980 kfree(raw_super); 4981 free_sbi: 4982 kfree(sbi); 4983 sb->s_fs_info = NULL; 4984 4985 /* give only one another chance */ 4986 if (retry_cnt > 0 && skip_recovery) { 4987 retry_cnt--; 4988 shrink_dcache_sb(sb); 4989 goto try_onemore; 4990 } 4991 return err; 4992 } 4993 f2fs_mount(struct file_system_type * fs_type,int flags,const char * dev_name,void * data)4994 static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags, 4995 const char *dev_name, void *data) 4996 { 4997 return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super); 4998 } 4999 kill_f2fs_super(struct super_block * sb)5000 static void kill_f2fs_super(struct super_block *sb) 5001 { 5002 struct f2fs_sb_info *sbi = F2FS_SB(sb); 5003 5004 if (sb->s_root) { 5005 sbi->umount_lock_holder = current; 5006 5007 set_sbi_flag(sbi, SBI_IS_CLOSE); 5008 f2fs_stop_gc_thread(sbi); 5009 f2fs_stop_discard_thread(sbi); 5010 5011 #ifdef CONFIG_F2FS_FS_COMPRESSION 5012 /* 5013 * latter evict_inode() can bypass checking and invalidating 5014 * compress inode cache. 5015 */ 5016 if (test_opt(sbi, COMPRESS_CACHE)) 5017 truncate_inode_pages_final(COMPRESS_MAPPING(sbi)); 5018 #endif 5019 5020 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) || 5021 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) { 5022 struct cp_control cpc = { 5023 .reason = CP_UMOUNT, 5024 }; 5025 stat_inc_cp_call_count(sbi, TOTAL_CALL); 5026 f2fs_write_checkpoint(sbi, &cpc); 5027 } 5028 5029 if (is_sbi_flag_set(sbi, SBI_IS_RECOVERED) && f2fs_readonly(sb)) 5030 sb->s_flags &= ~SB_RDONLY; 5031 } 5032 kill_block_super(sb); 5033 /* Release block devices last, after fscrypt_destroy_keyring(). */ 5034 if (sbi) { 5035 destroy_device_list(sbi); 5036 kfree(sbi); 5037 sb->s_fs_info = NULL; 5038 } 5039 } 5040 5041 static struct file_system_type f2fs_fs_type = { 5042 .owner = THIS_MODULE, 5043 .name = "f2fs", 5044 .mount = f2fs_mount, 5045 .kill_sb = kill_f2fs_super, 5046 .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP, 5047 }; 5048 MODULE_ALIAS_FS("f2fs"); 5049 init_inodecache(void)5050 static int __init init_inodecache(void) 5051 { 5052 f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache", 5053 sizeof(struct f2fs_inode_info), 0, 5054 SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL); 5055 return f2fs_inode_cachep ? 0 : -ENOMEM; 5056 } 5057 destroy_inodecache(void)5058 static void destroy_inodecache(void) 5059 { 5060 /* 5061 * Make sure all delayed rcu free inodes are flushed before we 5062 * destroy cache. 5063 */ 5064 rcu_barrier(); 5065 kmem_cache_destroy(f2fs_inode_cachep); 5066 } 5067 init_f2fs_fs(void)5068 static int __init init_f2fs_fs(void) 5069 { 5070 int err; 5071 5072 err = init_inodecache(); 5073 if (err) 5074 goto fail; 5075 err = f2fs_create_node_manager_caches(); 5076 if (err) 5077 goto free_inodecache; 5078 err = f2fs_create_segment_manager_caches(); 5079 if (err) 5080 goto free_node_manager_caches; 5081 err = f2fs_create_checkpoint_caches(); 5082 if (err) 5083 goto free_segment_manager_caches; 5084 err = f2fs_create_recovery_cache(); 5085 if (err) 5086 goto free_checkpoint_caches; 5087 err = f2fs_create_extent_cache(); 5088 if (err) 5089 goto free_recovery_cache; 5090 err = f2fs_create_garbage_collection_cache(); 5091 if (err) 5092 goto free_extent_cache; 5093 err = f2fs_init_sysfs(); 5094 if (err) 5095 goto free_garbage_collection_cache; 5096 err = f2fs_init_shrinker(); 5097 if (err) 5098 goto free_sysfs; 5099 f2fs_create_root_stats(); 5100 err = f2fs_init_post_read_processing(); 5101 if (err) 5102 goto free_root_stats; 5103 err = f2fs_init_iostat_processing(); 5104 if (err) 5105 goto free_post_read; 5106 err = f2fs_init_bio_entry_cache(); 5107 if (err) 5108 goto free_iostat; 5109 err = f2fs_init_bioset(); 5110 if (err) 5111 goto free_bio_entry_cache; 5112 err = f2fs_init_compress_mempool(); 5113 if (err) 5114 goto free_bioset; 5115 err = f2fs_init_compress_cache(); 5116 if (err) 5117 goto free_compress_mempool; 5118 err = f2fs_create_casefold_cache(); 5119 if (err) 5120 goto free_compress_cache; 5121 err = register_filesystem(&f2fs_fs_type); 5122 if (err) 5123 goto free_casefold_cache; 5124 return 0; 5125 free_casefold_cache: 5126 f2fs_destroy_casefold_cache(); 5127 free_compress_cache: 5128 f2fs_destroy_compress_cache(); 5129 free_compress_mempool: 5130 f2fs_destroy_compress_mempool(); 5131 free_bioset: 5132 f2fs_destroy_bioset(); 5133 free_bio_entry_cache: 5134 f2fs_destroy_bio_entry_cache(); 5135 free_iostat: 5136 f2fs_destroy_iostat_processing(); 5137 free_post_read: 5138 f2fs_destroy_post_read_processing(); 5139 free_root_stats: 5140 f2fs_destroy_root_stats(); 5141 f2fs_exit_shrinker(); 5142 free_sysfs: 5143 f2fs_exit_sysfs(); 5144 free_garbage_collection_cache: 5145 f2fs_destroy_garbage_collection_cache(); 5146 free_extent_cache: 5147 f2fs_destroy_extent_cache(); 5148 free_recovery_cache: 5149 f2fs_destroy_recovery_cache(); 5150 free_checkpoint_caches: 5151 f2fs_destroy_checkpoint_caches(); 5152 free_segment_manager_caches: 5153 f2fs_destroy_segment_manager_caches(); 5154 free_node_manager_caches: 5155 f2fs_destroy_node_manager_caches(); 5156 free_inodecache: 5157 destroy_inodecache(); 5158 fail: 5159 return err; 5160 } 5161 exit_f2fs_fs(void)5162 static void __exit exit_f2fs_fs(void) 5163 { 5164 unregister_filesystem(&f2fs_fs_type); 5165 f2fs_destroy_casefold_cache(); 5166 f2fs_destroy_compress_cache(); 5167 f2fs_destroy_compress_mempool(); 5168 f2fs_destroy_bioset(); 5169 f2fs_destroy_bio_entry_cache(); 5170 f2fs_destroy_iostat_processing(); 5171 f2fs_destroy_post_read_processing(); 5172 f2fs_destroy_root_stats(); 5173 f2fs_exit_shrinker(); 5174 f2fs_exit_sysfs(); 5175 f2fs_destroy_garbage_collection_cache(); 5176 f2fs_destroy_extent_cache(); 5177 f2fs_destroy_recovery_cache(); 5178 f2fs_destroy_checkpoint_caches(); 5179 f2fs_destroy_segment_manager_caches(); 5180 f2fs_destroy_node_manager_caches(); 5181 destroy_inodecache(); 5182 } 5183 5184 module_init(init_f2fs_fs) 5185 module_exit(exit_f2fs_fs) 5186 5187 MODULE_AUTHOR("Samsung Electronics's Praesto Team"); 5188 MODULE_DESCRIPTION("Flash Friendly File System"); 5189 MODULE_LICENSE("GPL"); 5190