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/buffer_head.h> 15 #include <linux/kthread.h> 16 #include <linux/parser.h> 17 #include <linux/mount.h> 18 #include <linux/seq_file.h> 19 #include <linux/proc_fs.h> 20 #include <linux/random.h> 21 #include <linux/exportfs.h> 22 #include <linux/blkdev.h> 23 #include <linux/quotaops.h> 24 #include <linux/f2fs_fs.h> 25 #include <linux/sysfs.h> 26 #include <linux/quota.h> 27 #include <linux/unicode.h> 28 #include <linux/part_stat.h> 29 #include <linux/zstd.h> 30 #include <linux/lz4.h> 31 32 #include "f2fs.h" 33 #include "node.h" 34 #include "segment.h" 35 #include "xattr.h" 36 #include "gc.h" 37 #include "iostat.h" 38 39 #define CREATE_TRACE_POINTS 40 #include <trace/events/f2fs.h> 41 42 static struct kmem_cache *f2fs_inode_cachep; 43 44 #ifdef CONFIG_F2FS_FAULT_INJECTION 45 46 const char *f2fs_fault_name[FAULT_MAX] = { 47 [FAULT_KMALLOC] = "kmalloc", 48 [FAULT_KVMALLOC] = "kvmalloc", 49 [FAULT_PAGE_ALLOC] = "page alloc", 50 [FAULT_PAGE_GET] = "page get", 51 [FAULT_ALLOC_NID] = "alloc nid", 52 [FAULT_ORPHAN] = "orphan", 53 [FAULT_BLOCK] = "no more block", 54 [FAULT_DIR_DEPTH] = "too big dir depth", 55 [FAULT_EVICT_INODE] = "evict_inode fail", 56 [FAULT_TRUNCATE] = "truncate fail", 57 [FAULT_READ_IO] = "read IO error", 58 [FAULT_CHECKPOINT] = "checkpoint error", 59 [FAULT_DISCARD] = "discard error", 60 [FAULT_WRITE_IO] = "write IO error", 61 [FAULT_SLAB_ALLOC] = "slab alloc", 62 [FAULT_DQUOT_INIT] = "dquot initialize", 63 [FAULT_LOCK_OP] = "lock_op", 64 [FAULT_BLKADDR_VALIDITY] = "invalid blkaddr", 65 [FAULT_BLKADDR_CONSISTENCE] = "inconsistent blkaddr", 66 [FAULT_NO_SEGMENT] = "no free segment", 67 }; 68 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; 99 100 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 } 113 114 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_quota, 155 Opt_noquota, 156 Opt_usrquota, 157 Opt_grpquota, 158 Opt_prjquota, 159 Opt_usrjquota, 160 Opt_grpjquota, 161 Opt_prjjquota, 162 Opt_offusrjquota, 163 Opt_offgrpjquota, 164 Opt_offprjjquota, 165 Opt_jqfmt_vfsold, 166 Opt_jqfmt_vfsv0, 167 Opt_jqfmt_vfsv1, 168 Opt_alloc, 169 Opt_fsync, 170 Opt_test_dummy_encryption, 171 Opt_inlinecrypt, 172 Opt_checkpoint_disable, 173 Opt_checkpoint_disable_cap, 174 Opt_checkpoint_disable_cap_perc, 175 Opt_checkpoint_enable, 176 Opt_checkpoint_merge, 177 Opt_nocheckpoint_merge, 178 Opt_compress_algorithm, 179 Opt_compress_log_size, 180 Opt_compress_extension, 181 Opt_nocompress_extension, 182 Opt_compress_chksum, 183 Opt_compress_mode, 184 Opt_compress_cache, 185 Opt_atgc, 186 Opt_gc_merge, 187 Opt_nogc_merge, 188 Opt_discard_unit, 189 Opt_memory_mode, 190 Opt_age_extent_cache, 191 Opt_errors, 192 Opt_err, 193 }; 194 195 static match_table_t f2fs_tokens = { 196 {Opt_gc_background, "background_gc=%s"}, 197 {Opt_disable_roll_forward, "disable_roll_forward"}, 198 {Opt_norecovery, "norecovery"}, 199 {Opt_discard, "discard"}, 200 {Opt_nodiscard, "nodiscard"}, 201 {Opt_noheap, "no_heap"}, 202 {Opt_heap, "heap"}, 203 {Opt_user_xattr, "user_xattr"}, 204 {Opt_nouser_xattr, "nouser_xattr"}, 205 {Opt_acl, "acl"}, 206 {Opt_noacl, "noacl"}, 207 {Opt_active_logs, "active_logs=%u"}, 208 {Opt_disable_ext_identify, "disable_ext_identify"}, 209 {Opt_inline_xattr, "inline_xattr"}, 210 {Opt_noinline_xattr, "noinline_xattr"}, 211 {Opt_inline_xattr_size, "inline_xattr_size=%u"}, 212 {Opt_inline_data, "inline_data"}, 213 {Opt_inline_dentry, "inline_dentry"}, 214 {Opt_noinline_dentry, "noinline_dentry"}, 215 {Opt_flush_merge, "flush_merge"}, 216 {Opt_noflush_merge, "noflush_merge"}, 217 {Opt_barrier, "barrier"}, 218 {Opt_nobarrier, "nobarrier"}, 219 {Opt_fastboot, "fastboot"}, 220 {Opt_extent_cache, "extent_cache"}, 221 {Opt_noextent_cache, "noextent_cache"}, 222 {Opt_noinline_data, "noinline_data"}, 223 {Opt_data_flush, "data_flush"}, 224 {Opt_reserve_root, "reserve_root=%u"}, 225 {Opt_resgid, "resgid=%u"}, 226 {Opt_resuid, "resuid=%u"}, 227 {Opt_mode, "mode=%s"}, 228 {Opt_fault_injection, "fault_injection=%u"}, 229 {Opt_fault_type, "fault_type=%u"}, 230 {Opt_quota, "quota"}, 231 {Opt_noquota, "noquota"}, 232 {Opt_usrquota, "usrquota"}, 233 {Opt_grpquota, "grpquota"}, 234 {Opt_prjquota, "prjquota"}, 235 {Opt_usrjquota, "usrjquota=%s"}, 236 {Opt_grpjquota, "grpjquota=%s"}, 237 {Opt_prjjquota, "prjjquota=%s"}, 238 {Opt_offusrjquota, "usrjquota="}, 239 {Opt_offgrpjquota, "grpjquota="}, 240 {Opt_offprjjquota, "prjjquota="}, 241 {Opt_jqfmt_vfsold, "jqfmt=vfsold"}, 242 {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"}, 243 {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"}, 244 {Opt_alloc, "alloc_mode=%s"}, 245 {Opt_fsync, "fsync_mode=%s"}, 246 {Opt_test_dummy_encryption, "test_dummy_encryption=%s"}, 247 {Opt_test_dummy_encryption, "test_dummy_encryption"}, 248 {Opt_inlinecrypt, "inlinecrypt"}, 249 {Opt_checkpoint_disable, "checkpoint=disable"}, 250 {Opt_checkpoint_disable_cap, "checkpoint=disable:%u"}, 251 {Opt_checkpoint_disable_cap_perc, "checkpoint=disable:%u%%"}, 252 {Opt_checkpoint_enable, "checkpoint=enable"}, 253 {Opt_checkpoint_merge, "checkpoint_merge"}, 254 {Opt_nocheckpoint_merge, "nocheckpoint_merge"}, 255 {Opt_compress_algorithm, "compress_algorithm=%s"}, 256 {Opt_compress_log_size, "compress_log_size=%u"}, 257 {Opt_compress_extension, "compress_extension=%s"}, 258 {Opt_nocompress_extension, "nocompress_extension=%s"}, 259 {Opt_compress_chksum, "compress_chksum"}, 260 {Opt_compress_mode, "compress_mode=%s"}, 261 {Opt_compress_cache, "compress_cache"}, 262 {Opt_atgc, "atgc"}, 263 {Opt_gc_merge, "gc_merge"}, 264 {Opt_nogc_merge, "nogc_merge"}, 265 {Opt_discard_unit, "discard_unit=%s"}, 266 {Opt_memory_mode, "memory=%s"}, 267 {Opt_age_extent_cache, "age_extent_cache"}, 268 {Opt_errors, "errors=%s"}, 269 {Opt_err, NULL}, 270 }; 271 272 void f2fs_printk(struct f2fs_sb_info *sbi, bool limit_rate, 273 const char *fmt, ...) 274 { 275 struct va_format vaf; 276 va_list args; 277 int level; 278 279 va_start(args, fmt); 280 281 level = printk_get_level(fmt); 282 vaf.fmt = printk_skip_level(fmt); 283 vaf.va = &args; 284 if (limit_rate) 285 printk_ratelimited("%c%cF2FS-fs (%s): %pV\n", 286 KERN_SOH_ASCII, level, sbi->sb->s_id, &vaf); 287 else 288 printk("%c%cF2FS-fs (%s): %pV\n", 289 KERN_SOH_ASCII, level, sbi->sb->s_id, &vaf); 290 291 va_end(args); 292 } 293 294 #if IS_ENABLED(CONFIG_UNICODE) 295 static const struct f2fs_sb_encodings { 296 __u16 magic; 297 char *name; 298 unsigned int version; 299 } f2fs_sb_encoding_map[] = { 300 {F2FS_ENC_UTF8_12_1, "utf8", UNICODE_AGE(12, 1, 0)}, 301 }; 302 303 static const struct f2fs_sb_encodings * 304 f2fs_sb_read_encoding(const struct f2fs_super_block *sb) 305 { 306 __u16 magic = le16_to_cpu(sb->s_encoding); 307 int i; 308 309 for (i = 0; i < ARRAY_SIZE(f2fs_sb_encoding_map); i++) 310 if (magic == f2fs_sb_encoding_map[i].magic) 311 return &f2fs_sb_encoding_map[i]; 312 313 return NULL; 314 } 315 316 struct kmem_cache *f2fs_cf_name_slab; 317 static int __init f2fs_create_casefold_cache(void) 318 { 319 f2fs_cf_name_slab = f2fs_kmem_cache_create("f2fs_casefolded_name", 320 F2FS_NAME_LEN); 321 return f2fs_cf_name_slab ? 0 : -ENOMEM; 322 } 323 324 static void f2fs_destroy_casefold_cache(void) 325 { 326 kmem_cache_destroy(f2fs_cf_name_slab); 327 } 328 #else 329 static int __init f2fs_create_casefold_cache(void) { return 0; } 330 static void f2fs_destroy_casefold_cache(void) { } 331 #endif 332 333 static inline void limit_reserve_root(struct f2fs_sb_info *sbi) 334 { 335 block_t limit = min((sbi->user_block_count >> 3), 336 sbi->user_block_count - sbi->reserved_blocks); 337 338 /* limit is 12.5% */ 339 if (test_opt(sbi, RESERVE_ROOT) && 340 F2FS_OPTION(sbi).root_reserved_blocks > limit) { 341 F2FS_OPTION(sbi).root_reserved_blocks = limit; 342 f2fs_info(sbi, "Reduce reserved blocks for root = %u", 343 F2FS_OPTION(sbi).root_reserved_blocks); 344 } 345 if (!test_opt(sbi, RESERVE_ROOT) && 346 (!uid_eq(F2FS_OPTION(sbi).s_resuid, 347 make_kuid(&init_user_ns, F2FS_DEF_RESUID)) || 348 !gid_eq(F2FS_OPTION(sbi).s_resgid, 349 make_kgid(&init_user_ns, F2FS_DEF_RESGID)))) 350 f2fs_info(sbi, "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root", 351 from_kuid_munged(&init_user_ns, 352 F2FS_OPTION(sbi).s_resuid), 353 from_kgid_munged(&init_user_ns, 354 F2FS_OPTION(sbi).s_resgid)); 355 } 356 357 static inline void adjust_unusable_cap_perc(struct f2fs_sb_info *sbi) 358 { 359 if (!F2FS_OPTION(sbi).unusable_cap_perc) 360 return; 361 362 if (F2FS_OPTION(sbi).unusable_cap_perc == 100) 363 F2FS_OPTION(sbi).unusable_cap = sbi->user_block_count; 364 else 365 F2FS_OPTION(sbi).unusable_cap = (sbi->user_block_count / 100) * 366 F2FS_OPTION(sbi).unusable_cap_perc; 367 368 f2fs_info(sbi, "Adjust unusable cap for checkpoint=disable = %u / %u%%", 369 F2FS_OPTION(sbi).unusable_cap, 370 F2FS_OPTION(sbi).unusable_cap_perc); 371 } 372 373 static void init_once(void *foo) 374 { 375 struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo; 376 377 inode_init_once(&fi->vfs_inode); 378 } 379 380 #ifdef CONFIG_QUOTA 381 static const char * const quotatypes[] = INITQFNAMES; 382 #define QTYPE2NAME(t) (quotatypes[t]) 383 static int f2fs_set_qf_name(struct super_block *sb, int qtype, 384 substring_t *args) 385 { 386 struct f2fs_sb_info *sbi = F2FS_SB(sb); 387 char *qname; 388 int ret = -EINVAL; 389 390 if (sb_any_quota_loaded(sb) && !F2FS_OPTION(sbi).s_qf_names[qtype]) { 391 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on"); 392 return -EINVAL; 393 } 394 if (f2fs_sb_has_quota_ino(sbi)) { 395 f2fs_info(sbi, "QUOTA feature is enabled, so ignore qf_name"); 396 return 0; 397 } 398 399 qname = match_strdup(args); 400 if (!qname) { 401 f2fs_err(sbi, "Not enough memory for storing quotafile name"); 402 return -ENOMEM; 403 } 404 if (F2FS_OPTION(sbi).s_qf_names[qtype]) { 405 if (strcmp(F2FS_OPTION(sbi).s_qf_names[qtype], qname) == 0) 406 ret = 0; 407 else 408 f2fs_err(sbi, "%s quota file already specified", 409 QTYPE2NAME(qtype)); 410 goto errout; 411 } 412 if (strchr(qname, '/')) { 413 f2fs_err(sbi, "quotafile must be on filesystem root"); 414 goto errout; 415 } 416 F2FS_OPTION(sbi).s_qf_names[qtype] = qname; 417 set_opt(sbi, QUOTA); 418 return 0; 419 errout: 420 kfree(qname); 421 return ret; 422 } 423 424 static int f2fs_clear_qf_name(struct super_block *sb, int qtype) 425 { 426 struct f2fs_sb_info *sbi = F2FS_SB(sb); 427 428 if (sb_any_quota_loaded(sb) && F2FS_OPTION(sbi).s_qf_names[qtype]) { 429 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on"); 430 return -EINVAL; 431 } 432 kfree(F2FS_OPTION(sbi).s_qf_names[qtype]); 433 F2FS_OPTION(sbi).s_qf_names[qtype] = NULL; 434 return 0; 435 } 436 437 static int f2fs_check_quota_options(struct f2fs_sb_info *sbi) 438 { 439 /* 440 * We do the test below only for project quotas. 'usrquota' and 441 * 'grpquota' mount options are allowed even without quota feature 442 * to support legacy quotas in quota files. 443 */ 444 if (test_opt(sbi, PRJQUOTA) && !f2fs_sb_has_project_quota(sbi)) { 445 f2fs_err(sbi, "Project quota feature not enabled. Cannot enable project quota enforcement."); 446 return -1; 447 } 448 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] || 449 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] || 450 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) { 451 if (test_opt(sbi, USRQUOTA) && 452 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]) 453 clear_opt(sbi, USRQUOTA); 454 455 if (test_opt(sbi, GRPQUOTA) && 456 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]) 457 clear_opt(sbi, GRPQUOTA); 458 459 if (test_opt(sbi, PRJQUOTA) && 460 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) 461 clear_opt(sbi, PRJQUOTA); 462 463 if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) || 464 test_opt(sbi, PRJQUOTA)) { 465 f2fs_err(sbi, "old and new quota format mixing"); 466 return -1; 467 } 468 469 if (!F2FS_OPTION(sbi).s_jquota_fmt) { 470 f2fs_err(sbi, "journaled quota format not specified"); 471 return -1; 472 } 473 } 474 475 if (f2fs_sb_has_quota_ino(sbi) && F2FS_OPTION(sbi).s_jquota_fmt) { 476 f2fs_info(sbi, "QUOTA feature is enabled, so ignore jquota_fmt"); 477 F2FS_OPTION(sbi).s_jquota_fmt = 0; 478 } 479 return 0; 480 } 481 #endif 482 483 static int f2fs_set_test_dummy_encryption(struct super_block *sb, 484 const char *opt, 485 const substring_t *arg, 486 bool is_remount) 487 { 488 struct f2fs_sb_info *sbi = F2FS_SB(sb); 489 struct fs_parameter param = { 490 .type = fs_value_is_string, 491 .string = arg->from ? arg->from : "", 492 }; 493 struct fscrypt_dummy_policy *policy = 494 &F2FS_OPTION(sbi).dummy_enc_policy; 495 int err; 496 497 if (!IS_ENABLED(CONFIG_FS_ENCRYPTION)) { 498 f2fs_warn(sbi, "test_dummy_encryption option not supported"); 499 return -EINVAL; 500 } 501 502 if (!f2fs_sb_has_encrypt(sbi)) { 503 f2fs_err(sbi, "Encrypt feature is off"); 504 return -EINVAL; 505 } 506 507 /* 508 * This mount option is just for testing, and it's not worthwhile to 509 * implement the extra complexity (e.g. RCU protection) that would be 510 * needed to allow it to be set or changed during remount. We do allow 511 * it to be specified during remount, but only if there is no change. 512 */ 513 if (is_remount && !fscrypt_is_dummy_policy_set(policy)) { 514 f2fs_warn(sbi, "Can't set test_dummy_encryption on remount"); 515 return -EINVAL; 516 } 517 518 err = fscrypt_parse_test_dummy_encryption(¶m, policy); 519 if (err) { 520 if (err == -EEXIST) 521 f2fs_warn(sbi, 522 "Can't change test_dummy_encryption on remount"); 523 else if (err == -EINVAL) 524 f2fs_warn(sbi, "Value of option \"%s\" is unrecognized", 525 opt); 526 else 527 f2fs_warn(sbi, "Error processing option \"%s\" [%d]", 528 opt, err); 529 return -EINVAL; 530 } 531 f2fs_warn(sbi, "Test dummy encryption mode enabled"); 532 return 0; 533 } 534 535 #ifdef CONFIG_F2FS_FS_COMPRESSION 536 static bool is_compress_extension_exist(struct f2fs_sb_info *sbi, 537 const char *new_ext, bool is_ext) 538 { 539 unsigned char (*ext)[F2FS_EXTENSION_LEN]; 540 int ext_cnt; 541 int i; 542 543 if (is_ext) { 544 ext = F2FS_OPTION(sbi).extensions; 545 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt; 546 } else { 547 ext = F2FS_OPTION(sbi).noextensions; 548 ext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt; 549 } 550 551 for (i = 0; i < ext_cnt; i++) { 552 if (!strcasecmp(new_ext, ext[i])) 553 return true; 554 } 555 556 return false; 557 } 558 559 /* 560 * 1. The same extension name cannot not appear in both compress and non-compress extension 561 * at the same time. 562 * 2. If the compress extension specifies all files, the types specified by the non-compress 563 * extension will be treated as special cases and will not be compressed. 564 * 3. Don't allow the non-compress extension specifies all files. 565 */ 566 static int f2fs_test_compress_extension(struct f2fs_sb_info *sbi) 567 { 568 unsigned char (*ext)[F2FS_EXTENSION_LEN]; 569 unsigned char (*noext)[F2FS_EXTENSION_LEN]; 570 int ext_cnt, noext_cnt, index = 0, no_index = 0; 571 572 ext = F2FS_OPTION(sbi).extensions; 573 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt; 574 noext = F2FS_OPTION(sbi).noextensions; 575 noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt; 576 577 if (!noext_cnt) 578 return 0; 579 580 for (no_index = 0; no_index < noext_cnt; no_index++) { 581 if (!strcasecmp("*", noext[no_index])) { 582 f2fs_info(sbi, "Don't allow the nocompress extension specifies all files"); 583 return -EINVAL; 584 } 585 for (index = 0; index < ext_cnt; index++) { 586 if (!strcasecmp(ext[index], noext[no_index])) { 587 f2fs_info(sbi, "Don't allow the same extension %s appear in both compress and nocompress extension", 588 ext[index]); 589 return -EINVAL; 590 } 591 } 592 } 593 return 0; 594 } 595 596 #ifdef CONFIG_F2FS_FS_LZ4 597 static int f2fs_set_lz4hc_level(struct f2fs_sb_info *sbi, const char *str) 598 { 599 #ifdef CONFIG_F2FS_FS_LZ4HC 600 unsigned int level; 601 602 if (strlen(str) == 3) { 603 F2FS_OPTION(sbi).compress_level = 0; 604 return 0; 605 } 606 607 str += 3; 608 609 if (str[0] != ':') { 610 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>"); 611 return -EINVAL; 612 } 613 if (kstrtouint(str + 1, 10, &level)) 614 return -EINVAL; 615 616 if (!f2fs_is_compress_level_valid(COMPRESS_LZ4, level)) { 617 f2fs_info(sbi, "invalid lz4hc compress level: %d", level); 618 return -EINVAL; 619 } 620 621 F2FS_OPTION(sbi).compress_level = level; 622 return 0; 623 #else 624 if (strlen(str) == 3) { 625 F2FS_OPTION(sbi).compress_level = 0; 626 return 0; 627 } 628 f2fs_info(sbi, "kernel doesn't support lz4hc compression"); 629 return -EINVAL; 630 #endif 631 } 632 #endif 633 634 #ifdef CONFIG_F2FS_FS_ZSTD 635 static int f2fs_set_zstd_level(struct f2fs_sb_info *sbi, const char *str) 636 { 637 int level; 638 int len = 4; 639 640 if (strlen(str) == len) { 641 F2FS_OPTION(sbi).compress_level = F2FS_ZSTD_DEFAULT_CLEVEL; 642 return 0; 643 } 644 645 str += len; 646 647 if (str[0] != ':') { 648 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>"); 649 return -EINVAL; 650 } 651 if (kstrtoint(str + 1, 10, &level)) 652 return -EINVAL; 653 654 /* f2fs does not support negative compress level now */ 655 if (level < 0) { 656 f2fs_info(sbi, "do not support negative compress level: %d", level); 657 return -ERANGE; 658 } 659 660 if (!f2fs_is_compress_level_valid(COMPRESS_ZSTD, level)) { 661 f2fs_info(sbi, "invalid zstd compress level: %d", level); 662 return -EINVAL; 663 } 664 665 F2FS_OPTION(sbi).compress_level = level; 666 return 0; 667 } 668 #endif 669 #endif 670 671 static int parse_options(struct super_block *sb, char *options, bool is_remount) 672 { 673 struct f2fs_sb_info *sbi = F2FS_SB(sb); 674 substring_t args[MAX_OPT_ARGS]; 675 #ifdef CONFIG_F2FS_FS_COMPRESSION 676 unsigned char (*ext)[F2FS_EXTENSION_LEN]; 677 unsigned char (*noext)[F2FS_EXTENSION_LEN]; 678 int ext_cnt, noext_cnt; 679 #endif 680 char *p, *name; 681 int arg = 0; 682 kuid_t uid; 683 kgid_t gid; 684 int ret; 685 686 if (!options) 687 goto default_check; 688 689 while ((p = strsep(&options, ",")) != NULL) { 690 int token; 691 692 if (!*p) 693 continue; 694 /* 695 * Initialize args struct so we know whether arg was 696 * found; some options take optional arguments. 697 */ 698 args[0].to = args[0].from = NULL; 699 token = match_token(p, f2fs_tokens, args); 700 701 switch (token) { 702 case Opt_gc_background: 703 name = match_strdup(&args[0]); 704 705 if (!name) 706 return -ENOMEM; 707 if (!strcmp(name, "on")) { 708 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON; 709 } else if (!strcmp(name, "off")) { 710 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_OFF; 711 } else if (!strcmp(name, "sync")) { 712 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_SYNC; 713 } else { 714 kfree(name); 715 return -EINVAL; 716 } 717 kfree(name); 718 break; 719 case Opt_disable_roll_forward: 720 set_opt(sbi, DISABLE_ROLL_FORWARD); 721 break; 722 case Opt_norecovery: 723 /* this option mounts f2fs with ro */ 724 set_opt(sbi, NORECOVERY); 725 if (!f2fs_readonly(sb)) 726 return -EINVAL; 727 break; 728 case Opt_discard: 729 if (!f2fs_hw_support_discard(sbi)) { 730 f2fs_warn(sbi, "device does not support discard"); 731 break; 732 } 733 set_opt(sbi, DISCARD); 734 break; 735 case Opt_nodiscard: 736 if (f2fs_hw_should_discard(sbi)) { 737 f2fs_warn(sbi, "discard is required for zoned block devices"); 738 return -EINVAL; 739 } 740 clear_opt(sbi, DISCARD); 741 break; 742 case Opt_noheap: 743 case Opt_heap: 744 f2fs_warn(sbi, "heap/no_heap options were deprecated"); 745 break; 746 #ifdef CONFIG_F2FS_FS_XATTR 747 case Opt_user_xattr: 748 set_opt(sbi, XATTR_USER); 749 break; 750 case Opt_nouser_xattr: 751 clear_opt(sbi, XATTR_USER); 752 break; 753 case Opt_inline_xattr: 754 set_opt(sbi, INLINE_XATTR); 755 break; 756 case Opt_noinline_xattr: 757 clear_opt(sbi, INLINE_XATTR); 758 break; 759 case Opt_inline_xattr_size: 760 if (args->from && match_int(args, &arg)) 761 return -EINVAL; 762 set_opt(sbi, INLINE_XATTR_SIZE); 763 F2FS_OPTION(sbi).inline_xattr_size = arg; 764 break; 765 #else 766 case Opt_user_xattr: 767 f2fs_info(sbi, "user_xattr options not supported"); 768 break; 769 case Opt_nouser_xattr: 770 f2fs_info(sbi, "nouser_xattr options not supported"); 771 break; 772 case Opt_inline_xattr: 773 f2fs_info(sbi, "inline_xattr options not supported"); 774 break; 775 case Opt_noinline_xattr: 776 f2fs_info(sbi, "noinline_xattr options not supported"); 777 break; 778 #endif 779 #ifdef CONFIG_F2FS_FS_POSIX_ACL 780 case Opt_acl: 781 set_opt(sbi, POSIX_ACL); 782 break; 783 case Opt_noacl: 784 clear_opt(sbi, POSIX_ACL); 785 break; 786 #else 787 case Opt_acl: 788 f2fs_info(sbi, "acl options not supported"); 789 break; 790 case Opt_noacl: 791 f2fs_info(sbi, "noacl 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 clear_opt(sbi, READ_EXTENT_CACHE); 834 break; 835 case Opt_noinline_data: 836 clear_opt(sbi, INLINE_DATA); 837 break; 838 case Opt_data_flush: 839 set_opt(sbi, DATA_FLUSH); 840 break; 841 case Opt_reserve_root: 842 if (args->from && match_int(args, &arg)) 843 return -EINVAL; 844 if (test_opt(sbi, RESERVE_ROOT)) { 845 f2fs_info(sbi, "Preserve previous reserve_root=%u", 846 F2FS_OPTION(sbi).root_reserved_blocks); 847 } else { 848 F2FS_OPTION(sbi).root_reserved_blocks = arg; 849 set_opt(sbi, RESERVE_ROOT); 850 } 851 break; 852 case Opt_resuid: 853 if (args->from && match_int(args, &arg)) 854 return -EINVAL; 855 uid = make_kuid(current_user_ns(), arg); 856 if (!uid_valid(uid)) { 857 f2fs_err(sbi, "Invalid uid value %d", arg); 858 return -EINVAL; 859 } 860 F2FS_OPTION(sbi).s_resuid = uid; 861 break; 862 case Opt_resgid: 863 if (args->from && match_int(args, &arg)) 864 return -EINVAL; 865 gid = make_kgid(current_user_ns(), arg); 866 if (!gid_valid(gid)) { 867 f2fs_err(sbi, "Invalid gid value %d", arg); 868 return -EINVAL; 869 } 870 F2FS_OPTION(sbi).s_resgid = gid; 871 break; 872 case Opt_mode: 873 name = match_strdup(&args[0]); 874 875 if (!name) 876 return -ENOMEM; 877 if (!strcmp(name, "adaptive")) { 878 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE; 879 } else if (!strcmp(name, "lfs")) { 880 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS; 881 } else if (!strcmp(name, "fragment:segment")) { 882 F2FS_OPTION(sbi).fs_mode = FS_MODE_FRAGMENT_SEG; 883 } else if (!strcmp(name, "fragment:block")) { 884 F2FS_OPTION(sbi).fs_mode = FS_MODE_FRAGMENT_BLK; 885 } else { 886 kfree(name); 887 return -EINVAL; 888 } 889 kfree(name); 890 break; 891 #ifdef CONFIG_F2FS_FAULT_INJECTION 892 case Opt_fault_injection: 893 if (args->from && match_int(args, &arg)) 894 return -EINVAL; 895 if (f2fs_build_fault_attr(sbi, arg, 896 F2FS_ALL_FAULT_TYPE)) 897 return -EINVAL; 898 set_opt(sbi, FAULT_INJECTION); 899 break; 900 901 case Opt_fault_type: 902 if (args->from && match_int(args, &arg)) 903 return -EINVAL; 904 if (f2fs_build_fault_attr(sbi, 0, arg)) 905 return -EINVAL; 906 set_opt(sbi, FAULT_INJECTION); 907 break; 908 #else 909 case Opt_fault_injection: 910 f2fs_info(sbi, "fault_injection options not supported"); 911 break; 912 913 case Opt_fault_type: 914 f2fs_info(sbi, "fault_type options not supported"); 915 break; 916 #endif 917 #ifdef CONFIG_QUOTA 918 case Opt_quota: 919 case Opt_usrquota: 920 set_opt(sbi, USRQUOTA); 921 break; 922 case Opt_grpquota: 923 set_opt(sbi, GRPQUOTA); 924 break; 925 case Opt_prjquota: 926 set_opt(sbi, PRJQUOTA); 927 break; 928 case Opt_usrjquota: 929 ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]); 930 if (ret) 931 return ret; 932 break; 933 case Opt_grpjquota: 934 ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]); 935 if (ret) 936 return ret; 937 break; 938 case Opt_prjjquota: 939 ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]); 940 if (ret) 941 return ret; 942 break; 943 case Opt_offusrjquota: 944 ret = f2fs_clear_qf_name(sb, USRQUOTA); 945 if (ret) 946 return ret; 947 break; 948 case Opt_offgrpjquota: 949 ret = f2fs_clear_qf_name(sb, GRPQUOTA); 950 if (ret) 951 return ret; 952 break; 953 case Opt_offprjjquota: 954 ret = f2fs_clear_qf_name(sb, PRJQUOTA); 955 if (ret) 956 return ret; 957 break; 958 case Opt_jqfmt_vfsold: 959 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD; 960 break; 961 case Opt_jqfmt_vfsv0: 962 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0; 963 break; 964 case Opt_jqfmt_vfsv1: 965 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1; 966 break; 967 case Opt_noquota: 968 clear_opt(sbi, QUOTA); 969 clear_opt(sbi, USRQUOTA); 970 clear_opt(sbi, GRPQUOTA); 971 clear_opt(sbi, PRJQUOTA); 972 break; 973 #else 974 case Opt_quota: 975 case Opt_usrquota: 976 case Opt_grpquota: 977 case Opt_prjquota: 978 case Opt_usrjquota: 979 case Opt_grpjquota: 980 case Opt_prjjquota: 981 case Opt_offusrjquota: 982 case Opt_offgrpjquota: 983 case Opt_offprjjquota: 984 case Opt_jqfmt_vfsold: 985 case Opt_jqfmt_vfsv0: 986 case Opt_jqfmt_vfsv1: 987 case Opt_noquota: 988 f2fs_info(sbi, "quota operations not supported"); 989 break; 990 #endif 991 case Opt_alloc: 992 name = match_strdup(&args[0]); 993 if (!name) 994 return -ENOMEM; 995 996 if (!strcmp(name, "default")) { 997 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT; 998 } else if (!strcmp(name, "reuse")) { 999 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE; 1000 } else { 1001 kfree(name); 1002 return -EINVAL; 1003 } 1004 kfree(name); 1005 break; 1006 case Opt_fsync: 1007 name = match_strdup(&args[0]); 1008 if (!name) 1009 return -ENOMEM; 1010 if (!strcmp(name, "posix")) { 1011 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX; 1012 } else if (!strcmp(name, "strict")) { 1013 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT; 1014 } else if (!strcmp(name, "nobarrier")) { 1015 F2FS_OPTION(sbi).fsync_mode = 1016 FSYNC_MODE_NOBARRIER; 1017 } else { 1018 kfree(name); 1019 return -EINVAL; 1020 } 1021 kfree(name); 1022 break; 1023 case Opt_test_dummy_encryption: 1024 ret = f2fs_set_test_dummy_encryption(sb, p, &args[0], 1025 is_remount); 1026 if (ret) 1027 return ret; 1028 break; 1029 case Opt_inlinecrypt: 1030 #ifdef CONFIG_FS_ENCRYPTION_INLINE_CRYPT 1031 sb->s_flags |= SB_INLINECRYPT; 1032 #else 1033 f2fs_info(sbi, "inline encryption not supported"); 1034 #endif 1035 break; 1036 case Opt_checkpoint_disable_cap_perc: 1037 if (args->from && match_int(args, &arg)) 1038 return -EINVAL; 1039 if (arg < 0 || arg > 100) 1040 return -EINVAL; 1041 F2FS_OPTION(sbi).unusable_cap_perc = arg; 1042 set_opt(sbi, DISABLE_CHECKPOINT); 1043 break; 1044 case Opt_checkpoint_disable_cap: 1045 if (args->from && match_int(args, &arg)) 1046 return -EINVAL; 1047 F2FS_OPTION(sbi).unusable_cap = arg; 1048 set_opt(sbi, DISABLE_CHECKPOINT); 1049 break; 1050 case Opt_checkpoint_disable: 1051 set_opt(sbi, DISABLE_CHECKPOINT); 1052 break; 1053 case Opt_checkpoint_enable: 1054 clear_opt(sbi, DISABLE_CHECKPOINT); 1055 break; 1056 case Opt_checkpoint_merge: 1057 set_opt(sbi, MERGE_CHECKPOINT); 1058 break; 1059 case Opt_nocheckpoint_merge: 1060 clear_opt(sbi, MERGE_CHECKPOINT); 1061 break; 1062 #ifdef CONFIG_F2FS_FS_COMPRESSION 1063 case Opt_compress_algorithm: 1064 if (!f2fs_sb_has_compression(sbi)) { 1065 f2fs_info(sbi, "Image doesn't support compression"); 1066 break; 1067 } 1068 name = match_strdup(&args[0]); 1069 if (!name) 1070 return -ENOMEM; 1071 if (!strcmp(name, "lzo")) { 1072 #ifdef CONFIG_F2FS_FS_LZO 1073 F2FS_OPTION(sbi).compress_level = 0; 1074 F2FS_OPTION(sbi).compress_algorithm = 1075 COMPRESS_LZO; 1076 #else 1077 f2fs_info(sbi, "kernel doesn't support lzo compression"); 1078 #endif 1079 } else if (!strncmp(name, "lz4", 3)) { 1080 #ifdef CONFIG_F2FS_FS_LZ4 1081 ret = f2fs_set_lz4hc_level(sbi, name); 1082 if (ret) { 1083 kfree(name); 1084 return -EINVAL; 1085 } 1086 F2FS_OPTION(sbi).compress_algorithm = 1087 COMPRESS_LZ4; 1088 #else 1089 f2fs_info(sbi, "kernel doesn't support lz4 compression"); 1090 #endif 1091 } else if (!strncmp(name, "zstd", 4)) { 1092 #ifdef CONFIG_F2FS_FS_ZSTD 1093 ret = f2fs_set_zstd_level(sbi, name); 1094 if (ret) { 1095 kfree(name); 1096 return -EINVAL; 1097 } 1098 F2FS_OPTION(sbi).compress_algorithm = 1099 COMPRESS_ZSTD; 1100 #else 1101 f2fs_info(sbi, "kernel doesn't support zstd compression"); 1102 #endif 1103 } else if (!strcmp(name, "lzo-rle")) { 1104 #ifdef CONFIG_F2FS_FS_LZORLE 1105 F2FS_OPTION(sbi).compress_level = 0; 1106 F2FS_OPTION(sbi).compress_algorithm = 1107 COMPRESS_LZORLE; 1108 #else 1109 f2fs_info(sbi, "kernel doesn't support lzorle compression"); 1110 #endif 1111 } else { 1112 kfree(name); 1113 return -EINVAL; 1114 } 1115 kfree(name); 1116 break; 1117 case Opt_compress_log_size: 1118 if (!f2fs_sb_has_compression(sbi)) { 1119 f2fs_info(sbi, "Image doesn't support compression"); 1120 break; 1121 } 1122 if (args->from && match_int(args, &arg)) 1123 return -EINVAL; 1124 if (arg < MIN_COMPRESS_LOG_SIZE || 1125 arg > MAX_COMPRESS_LOG_SIZE) { 1126 f2fs_err(sbi, 1127 "Compress cluster log size is out of range"); 1128 return -EINVAL; 1129 } 1130 F2FS_OPTION(sbi).compress_log_size = arg; 1131 break; 1132 case Opt_compress_extension: 1133 if (!f2fs_sb_has_compression(sbi)) { 1134 f2fs_info(sbi, "Image doesn't support compression"); 1135 break; 1136 } 1137 name = match_strdup(&args[0]); 1138 if (!name) 1139 return -ENOMEM; 1140 1141 ext = F2FS_OPTION(sbi).extensions; 1142 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt; 1143 1144 if (strlen(name) >= F2FS_EXTENSION_LEN || 1145 ext_cnt >= COMPRESS_EXT_NUM) { 1146 f2fs_err(sbi, 1147 "invalid extension length/number"); 1148 kfree(name); 1149 return -EINVAL; 1150 } 1151 1152 if (is_compress_extension_exist(sbi, name, true)) { 1153 kfree(name); 1154 break; 1155 } 1156 1157 strcpy(ext[ext_cnt], name); 1158 F2FS_OPTION(sbi).compress_ext_cnt++; 1159 kfree(name); 1160 break; 1161 case Opt_nocompress_extension: 1162 if (!f2fs_sb_has_compression(sbi)) { 1163 f2fs_info(sbi, "Image doesn't support compression"); 1164 break; 1165 } 1166 name = match_strdup(&args[0]); 1167 if (!name) 1168 return -ENOMEM; 1169 1170 noext = F2FS_OPTION(sbi).noextensions; 1171 noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt; 1172 1173 if (strlen(name) >= F2FS_EXTENSION_LEN || 1174 noext_cnt >= COMPRESS_EXT_NUM) { 1175 f2fs_err(sbi, 1176 "invalid extension length/number"); 1177 kfree(name); 1178 return -EINVAL; 1179 } 1180 1181 if (is_compress_extension_exist(sbi, name, false)) { 1182 kfree(name); 1183 break; 1184 } 1185 1186 strcpy(noext[noext_cnt], name); 1187 F2FS_OPTION(sbi).nocompress_ext_cnt++; 1188 kfree(name); 1189 break; 1190 case Opt_compress_chksum: 1191 if (!f2fs_sb_has_compression(sbi)) { 1192 f2fs_info(sbi, "Image doesn't support compression"); 1193 break; 1194 } 1195 F2FS_OPTION(sbi).compress_chksum = true; 1196 break; 1197 case Opt_compress_mode: 1198 if (!f2fs_sb_has_compression(sbi)) { 1199 f2fs_info(sbi, "Image doesn't support compression"); 1200 break; 1201 } 1202 name = match_strdup(&args[0]); 1203 if (!name) 1204 return -ENOMEM; 1205 if (!strcmp(name, "fs")) { 1206 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS; 1207 } else if (!strcmp(name, "user")) { 1208 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_USER; 1209 } else { 1210 kfree(name); 1211 return -EINVAL; 1212 } 1213 kfree(name); 1214 break; 1215 case Opt_compress_cache: 1216 if (!f2fs_sb_has_compression(sbi)) { 1217 f2fs_info(sbi, "Image doesn't support compression"); 1218 break; 1219 } 1220 set_opt(sbi, COMPRESS_CACHE); 1221 break; 1222 #else 1223 case Opt_compress_algorithm: 1224 case Opt_compress_log_size: 1225 case Opt_compress_extension: 1226 case Opt_nocompress_extension: 1227 case Opt_compress_chksum: 1228 case Opt_compress_mode: 1229 case Opt_compress_cache: 1230 f2fs_info(sbi, "compression options not supported"); 1231 break; 1232 #endif 1233 case Opt_atgc: 1234 set_opt(sbi, ATGC); 1235 break; 1236 case Opt_gc_merge: 1237 set_opt(sbi, GC_MERGE); 1238 break; 1239 case Opt_nogc_merge: 1240 clear_opt(sbi, GC_MERGE); 1241 break; 1242 case Opt_discard_unit: 1243 name = match_strdup(&args[0]); 1244 if (!name) 1245 return -ENOMEM; 1246 if (!strcmp(name, "block")) { 1247 F2FS_OPTION(sbi).discard_unit = 1248 DISCARD_UNIT_BLOCK; 1249 } else if (!strcmp(name, "segment")) { 1250 F2FS_OPTION(sbi).discard_unit = 1251 DISCARD_UNIT_SEGMENT; 1252 } else if (!strcmp(name, "section")) { 1253 F2FS_OPTION(sbi).discard_unit = 1254 DISCARD_UNIT_SECTION; 1255 } else { 1256 kfree(name); 1257 return -EINVAL; 1258 } 1259 kfree(name); 1260 break; 1261 case Opt_memory_mode: 1262 name = match_strdup(&args[0]); 1263 if (!name) 1264 return -ENOMEM; 1265 if (!strcmp(name, "normal")) { 1266 F2FS_OPTION(sbi).memory_mode = 1267 MEMORY_MODE_NORMAL; 1268 } else if (!strcmp(name, "low")) { 1269 F2FS_OPTION(sbi).memory_mode = 1270 MEMORY_MODE_LOW; 1271 } else { 1272 kfree(name); 1273 return -EINVAL; 1274 } 1275 kfree(name); 1276 break; 1277 case Opt_age_extent_cache: 1278 set_opt(sbi, AGE_EXTENT_CACHE); 1279 break; 1280 case Opt_errors: 1281 name = match_strdup(&args[0]); 1282 if (!name) 1283 return -ENOMEM; 1284 if (!strcmp(name, "remount-ro")) { 1285 F2FS_OPTION(sbi).errors = 1286 MOUNT_ERRORS_READONLY; 1287 } else if (!strcmp(name, "continue")) { 1288 F2FS_OPTION(sbi).errors = 1289 MOUNT_ERRORS_CONTINUE; 1290 } else if (!strcmp(name, "panic")) { 1291 F2FS_OPTION(sbi).errors = 1292 MOUNT_ERRORS_PANIC; 1293 } else { 1294 kfree(name); 1295 return -EINVAL; 1296 } 1297 kfree(name); 1298 break; 1299 default: 1300 f2fs_err(sbi, "Unrecognized mount option \"%s\" or missing value", 1301 p); 1302 return -EINVAL; 1303 } 1304 } 1305 default_check: 1306 #ifdef CONFIG_QUOTA 1307 if (f2fs_check_quota_options(sbi)) 1308 return -EINVAL; 1309 #else 1310 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sbi->sb)) { 1311 f2fs_info(sbi, "Filesystem with quota feature cannot be mounted RDWR without CONFIG_QUOTA"); 1312 return -EINVAL; 1313 } 1314 if (f2fs_sb_has_project_quota(sbi) && !f2fs_readonly(sbi->sb)) { 1315 f2fs_err(sbi, "Filesystem with project quota feature cannot be mounted RDWR without CONFIG_QUOTA"); 1316 return -EINVAL; 1317 } 1318 #endif 1319 1320 if (!IS_ENABLED(CONFIG_UNICODE) && f2fs_sb_has_casefold(sbi)) { 1321 f2fs_err(sbi, 1322 "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE"); 1323 return -EINVAL; 1324 } 1325 1326 /* 1327 * The BLKZONED feature indicates that the drive was formatted with 1328 * zone alignment optimization. This is optional for host-aware 1329 * devices, but mandatory for host-managed zoned block devices. 1330 */ 1331 if (f2fs_sb_has_blkzoned(sbi)) { 1332 #ifdef CONFIG_BLK_DEV_ZONED 1333 if (F2FS_OPTION(sbi).discard_unit != 1334 DISCARD_UNIT_SECTION) { 1335 f2fs_info(sbi, "Zoned block device doesn't need small discard, set discard_unit=section by default"); 1336 F2FS_OPTION(sbi).discard_unit = 1337 DISCARD_UNIT_SECTION; 1338 } 1339 1340 if (F2FS_OPTION(sbi).fs_mode != FS_MODE_LFS) { 1341 f2fs_info(sbi, "Only lfs mode is allowed with zoned block device feature"); 1342 return -EINVAL; 1343 } 1344 #else 1345 f2fs_err(sbi, "Zoned block device support is not enabled"); 1346 return -EINVAL; 1347 #endif 1348 } 1349 1350 #ifdef CONFIG_F2FS_FS_COMPRESSION 1351 if (f2fs_test_compress_extension(sbi)) { 1352 f2fs_err(sbi, "invalid compress or nocompress extension"); 1353 return -EINVAL; 1354 } 1355 #endif 1356 1357 if (test_opt(sbi, INLINE_XATTR_SIZE)) { 1358 int min_size, max_size; 1359 1360 if (!f2fs_sb_has_extra_attr(sbi) || 1361 !f2fs_sb_has_flexible_inline_xattr(sbi)) { 1362 f2fs_err(sbi, "extra_attr or flexible_inline_xattr feature is off"); 1363 return -EINVAL; 1364 } 1365 if (!test_opt(sbi, INLINE_XATTR)) { 1366 f2fs_err(sbi, "inline_xattr_size option should be set with inline_xattr option"); 1367 return -EINVAL; 1368 } 1369 1370 min_size = MIN_INLINE_XATTR_SIZE; 1371 max_size = MAX_INLINE_XATTR_SIZE; 1372 1373 if (F2FS_OPTION(sbi).inline_xattr_size < min_size || 1374 F2FS_OPTION(sbi).inline_xattr_size > max_size) { 1375 f2fs_err(sbi, "inline xattr size is out of range: %d ~ %d", 1376 min_size, max_size); 1377 return -EINVAL; 1378 } 1379 } 1380 1381 if (test_opt(sbi, ATGC) && f2fs_lfs_mode(sbi)) { 1382 f2fs_err(sbi, "LFS is not compatible with ATGC"); 1383 return -EINVAL; 1384 } 1385 1386 if (f2fs_is_readonly(sbi) && test_opt(sbi, FLUSH_MERGE)) { 1387 f2fs_err(sbi, "FLUSH_MERGE not compatible with readonly mode"); 1388 return -EINVAL; 1389 } 1390 1391 if (f2fs_sb_has_readonly(sbi) && !f2fs_readonly(sbi->sb)) { 1392 f2fs_err(sbi, "Allow to mount readonly mode only"); 1393 return -EROFS; 1394 } 1395 return 0; 1396 } 1397 1398 static struct inode *f2fs_alloc_inode(struct super_block *sb) 1399 { 1400 struct f2fs_inode_info *fi; 1401 1402 if (time_to_inject(F2FS_SB(sb), FAULT_SLAB_ALLOC)) 1403 return NULL; 1404 1405 fi = alloc_inode_sb(sb, f2fs_inode_cachep, GFP_F2FS_ZERO); 1406 if (!fi) 1407 return NULL; 1408 1409 init_once((void *) fi); 1410 1411 /* Initialize f2fs-specific inode info */ 1412 atomic_set(&fi->dirty_pages, 0); 1413 atomic_set(&fi->i_compr_blocks, 0); 1414 init_f2fs_rwsem(&fi->i_sem); 1415 spin_lock_init(&fi->i_size_lock); 1416 INIT_LIST_HEAD(&fi->dirty_list); 1417 INIT_LIST_HEAD(&fi->gdirty_list); 1418 init_f2fs_rwsem(&fi->i_gc_rwsem[READ]); 1419 init_f2fs_rwsem(&fi->i_gc_rwsem[WRITE]); 1420 init_f2fs_rwsem(&fi->i_xattr_sem); 1421 1422 /* Will be used by directory only */ 1423 fi->i_dir_level = F2FS_SB(sb)->dir_level; 1424 1425 return &fi->vfs_inode; 1426 } 1427 1428 static int f2fs_drop_inode(struct inode *inode) 1429 { 1430 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1431 int ret; 1432 1433 /* 1434 * during filesystem shutdown, if checkpoint is disabled, 1435 * drop useless meta/node dirty pages. 1436 */ 1437 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) { 1438 if (inode->i_ino == F2FS_NODE_INO(sbi) || 1439 inode->i_ino == F2FS_META_INO(sbi)) { 1440 trace_f2fs_drop_inode(inode, 1); 1441 return 1; 1442 } 1443 } 1444 1445 /* 1446 * This is to avoid a deadlock condition like below. 1447 * writeback_single_inode(inode) 1448 * - f2fs_write_data_page 1449 * - f2fs_gc -> iput -> evict 1450 * - inode_wait_for_writeback(inode) 1451 */ 1452 if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) { 1453 if (!inode->i_nlink && !is_bad_inode(inode)) { 1454 /* to avoid evict_inode call simultaneously */ 1455 atomic_inc(&inode->i_count); 1456 spin_unlock(&inode->i_lock); 1457 1458 /* should remain fi->extent_tree for writepage */ 1459 f2fs_destroy_extent_node(inode); 1460 1461 sb_start_intwrite(inode->i_sb); 1462 f2fs_i_size_write(inode, 0); 1463 1464 f2fs_submit_merged_write_cond(F2FS_I_SB(inode), 1465 inode, NULL, 0, DATA); 1466 truncate_inode_pages_final(inode->i_mapping); 1467 1468 if (F2FS_HAS_BLOCKS(inode)) 1469 f2fs_truncate(inode); 1470 1471 sb_end_intwrite(inode->i_sb); 1472 1473 spin_lock(&inode->i_lock); 1474 atomic_dec(&inode->i_count); 1475 } 1476 trace_f2fs_drop_inode(inode, 0); 1477 return 0; 1478 } 1479 ret = generic_drop_inode(inode); 1480 if (!ret) 1481 ret = fscrypt_drop_inode(inode); 1482 trace_f2fs_drop_inode(inode, ret); 1483 return ret; 1484 } 1485 1486 int f2fs_inode_dirtied(struct inode *inode, bool sync) 1487 { 1488 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1489 int ret = 0; 1490 1491 spin_lock(&sbi->inode_lock[DIRTY_META]); 1492 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) { 1493 ret = 1; 1494 } else { 1495 set_inode_flag(inode, FI_DIRTY_INODE); 1496 stat_inc_dirty_inode(sbi, DIRTY_META); 1497 } 1498 if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) { 1499 list_add_tail(&F2FS_I(inode)->gdirty_list, 1500 &sbi->inode_list[DIRTY_META]); 1501 inc_page_count(sbi, F2FS_DIRTY_IMETA); 1502 } 1503 spin_unlock(&sbi->inode_lock[DIRTY_META]); 1504 return ret; 1505 } 1506 1507 void f2fs_inode_synced(struct inode *inode) 1508 { 1509 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1510 1511 spin_lock(&sbi->inode_lock[DIRTY_META]); 1512 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) { 1513 spin_unlock(&sbi->inode_lock[DIRTY_META]); 1514 return; 1515 } 1516 if (!list_empty(&F2FS_I(inode)->gdirty_list)) { 1517 list_del_init(&F2FS_I(inode)->gdirty_list); 1518 dec_page_count(sbi, F2FS_DIRTY_IMETA); 1519 } 1520 clear_inode_flag(inode, FI_DIRTY_INODE); 1521 clear_inode_flag(inode, FI_AUTO_RECOVER); 1522 stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META); 1523 spin_unlock(&sbi->inode_lock[DIRTY_META]); 1524 } 1525 1526 /* 1527 * f2fs_dirty_inode() is called from __mark_inode_dirty() 1528 * 1529 * We should call set_dirty_inode to write the dirty inode through write_inode. 1530 */ 1531 static void f2fs_dirty_inode(struct inode *inode, int flags) 1532 { 1533 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1534 1535 if (inode->i_ino == F2FS_NODE_INO(sbi) || 1536 inode->i_ino == F2FS_META_INO(sbi)) 1537 return; 1538 1539 if (is_inode_flag_set(inode, FI_AUTO_RECOVER)) 1540 clear_inode_flag(inode, FI_AUTO_RECOVER); 1541 1542 f2fs_inode_dirtied(inode, false); 1543 } 1544 1545 static void f2fs_free_inode(struct inode *inode) 1546 { 1547 fscrypt_free_inode(inode); 1548 kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode)); 1549 } 1550 1551 static void destroy_percpu_info(struct f2fs_sb_info *sbi) 1552 { 1553 percpu_counter_destroy(&sbi->total_valid_inode_count); 1554 percpu_counter_destroy(&sbi->rf_node_block_count); 1555 percpu_counter_destroy(&sbi->alloc_valid_block_count); 1556 } 1557 1558 static void destroy_device_list(struct f2fs_sb_info *sbi) 1559 { 1560 int i; 1561 1562 for (i = 0; i < sbi->s_ndevs; i++) { 1563 if (i > 0) 1564 bdev_fput(FDEV(i).bdev_file); 1565 #ifdef CONFIG_BLK_DEV_ZONED 1566 kvfree(FDEV(i).blkz_seq); 1567 #endif 1568 } 1569 kvfree(sbi->devs); 1570 } 1571 1572 static void f2fs_put_super(struct super_block *sb) 1573 { 1574 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1575 int i; 1576 int err = 0; 1577 bool done; 1578 1579 /* unregister procfs/sysfs entries in advance to avoid race case */ 1580 f2fs_unregister_sysfs(sbi); 1581 1582 f2fs_quota_off_umount(sb); 1583 1584 /* prevent remaining shrinker jobs */ 1585 mutex_lock(&sbi->umount_mutex); 1586 1587 /* 1588 * flush all issued checkpoints and stop checkpoint issue thread. 1589 * after then, all checkpoints should be done by each process context. 1590 */ 1591 f2fs_stop_ckpt_thread(sbi); 1592 1593 /* 1594 * We don't need to do checkpoint when superblock is clean. 1595 * But, the previous checkpoint was not done by umount, it needs to do 1596 * clean checkpoint again. 1597 */ 1598 if ((is_sbi_flag_set(sbi, SBI_IS_DIRTY) || 1599 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))) { 1600 struct cp_control cpc = { 1601 .reason = CP_UMOUNT, 1602 }; 1603 stat_inc_cp_call_count(sbi, TOTAL_CALL); 1604 err = f2fs_write_checkpoint(sbi, &cpc); 1605 } 1606 1607 /* be sure to wait for any on-going discard commands */ 1608 done = f2fs_issue_discard_timeout(sbi); 1609 if (f2fs_realtime_discard_enable(sbi) && !sbi->discard_blks && done) { 1610 struct cp_control cpc = { 1611 .reason = CP_UMOUNT | CP_TRIMMED, 1612 }; 1613 stat_inc_cp_call_count(sbi, TOTAL_CALL); 1614 err = f2fs_write_checkpoint(sbi, &cpc); 1615 } 1616 1617 /* 1618 * normally superblock is clean, so we need to release this. 1619 * In addition, EIO will skip do checkpoint, we need this as well. 1620 */ 1621 f2fs_release_ino_entry(sbi, true); 1622 1623 f2fs_leave_shrinker(sbi); 1624 mutex_unlock(&sbi->umount_mutex); 1625 1626 /* our cp_error case, we can wait for any writeback page */ 1627 f2fs_flush_merged_writes(sbi); 1628 1629 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA); 1630 1631 if (err || f2fs_cp_error(sbi)) { 1632 truncate_inode_pages_final(NODE_MAPPING(sbi)); 1633 truncate_inode_pages_final(META_MAPPING(sbi)); 1634 } 1635 1636 for (i = 0; i < NR_COUNT_TYPE; i++) { 1637 if (!get_pages(sbi, i)) 1638 continue; 1639 f2fs_err(sbi, "detect filesystem reference count leak during " 1640 "umount, type: %d, count: %lld", i, get_pages(sbi, i)); 1641 f2fs_bug_on(sbi, 1); 1642 } 1643 1644 f2fs_bug_on(sbi, sbi->fsync_node_num); 1645 1646 f2fs_destroy_compress_inode(sbi); 1647 1648 iput(sbi->node_inode); 1649 sbi->node_inode = NULL; 1650 1651 iput(sbi->meta_inode); 1652 sbi->meta_inode = NULL; 1653 1654 /* 1655 * iput() can update stat information, if f2fs_write_checkpoint() 1656 * above failed with error. 1657 */ 1658 f2fs_destroy_stats(sbi); 1659 1660 /* destroy f2fs internal modules */ 1661 f2fs_destroy_node_manager(sbi); 1662 f2fs_destroy_segment_manager(sbi); 1663 1664 /* flush s_error_work before sbi destroy */ 1665 flush_work(&sbi->s_error_work); 1666 1667 f2fs_destroy_post_read_wq(sbi); 1668 1669 kvfree(sbi->ckpt); 1670 1671 if (sbi->s_chksum_driver) 1672 crypto_free_shash(sbi->s_chksum_driver); 1673 kfree(sbi->raw_super); 1674 1675 f2fs_destroy_page_array_cache(sbi); 1676 f2fs_destroy_xattr_caches(sbi); 1677 #ifdef CONFIG_QUOTA 1678 for (i = 0; i < MAXQUOTAS; i++) 1679 kfree(F2FS_OPTION(sbi).s_qf_names[i]); 1680 #endif 1681 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy); 1682 destroy_percpu_info(sbi); 1683 f2fs_destroy_iostat(sbi); 1684 for (i = 0; i < NR_PAGE_TYPE; i++) 1685 kvfree(sbi->write_io[i]); 1686 #if IS_ENABLED(CONFIG_UNICODE) 1687 utf8_unload(sb->s_encoding); 1688 #endif 1689 } 1690 1691 int f2fs_sync_fs(struct super_block *sb, int sync) 1692 { 1693 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1694 int err = 0; 1695 1696 if (unlikely(f2fs_cp_error(sbi))) 1697 return 0; 1698 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) 1699 return 0; 1700 1701 trace_f2fs_sync_fs(sb, sync); 1702 1703 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 1704 return -EAGAIN; 1705 1706 if (sync) { 1707 stat_inc_cp_call_count(sbi, TOTAL_CALL); 1708 err = f2fs_issue_checkpoint(sbi); 1709 } 1710 1711 return err; 1712 } 1713 1714 static int f2fs_freeze(struct super_block *sb) 1715 { 1716 if (f2fs_readonly(sb)) 1717 return 0; 1718 1719 /* IO error happened before */ 1720 if (unlikely(f2fs_cp_error(F2FS_SB(sb)))) 1721 return -EIO; 1722 1723 /* must be clean, since sync_filesystem() was already called */ 1724 if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY)) 1725 return -EINVAL; 1726 1727 /* Let's flush checkpoints and stop the thread. */ 1728 f2fs_flush_ckpt_thread(F2FS_SB(sb)); 1729 1730 /* to avoid deadlock on f2fs_evict_inode->SB_FREEZE_FS */ 1731 set_sbi_flag(F2FS_SB(sb), SBI_IS_FREEZING); 1732 return 0; 1733 } 1734 1735 static int f2fs_unfreeze(struct super_block *sb) 1736 { 1737 clear_sbi_flag(F2FS_SB(sb), SBI_IS_FREEZING); 1738 return 0; 1739 } 1740 1741 #ifdef CONFIG_QUOTA 1742 static int f2fs_statfs_project(struct super_block *sb, 1743 kprojid_t projid, struct kstatfs *buf) 1744 { 1745 struct kqid qid; 1746 struct dquot *dquot; 1747 u64 limit; 1748 u64 curblock; 1749 1750 qid = make_kqid_projid(projid); 1751 dquot = dqget(sb, qid); 1752 if (IS_ERR(dquot)) 1753 return PTR_ERR(dquot); 1754 spin_lock(&dquot->dq_dqb_lock); 1755 1756 limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit, 1757 dquot->dq_dqb.dqb_bhardlimit); 1758 if (limit) 1759 limit >>= sb->s_blocksize_bits; 1760 1761 if (limit && buf->f_blocks > limit) { 1762 curblock = (dquot->dq_dqb.dqb_curspace + 1763 dquot->dq_dqb.dqb_rsvspace) >> sb->s_blocksize_bits; 1764 buf->f_blocks = limit; 1765 buf->f_bfree = buf->f_bavail = 1766 (buf->f_blocks > curblock) ? 1767 (buf->f_blocks - curblock) : 0; 1768 } 1769 1770 limit = min_not_zero(dquot->dq_dqb.dqb_isoftlimit, 1771 dquot->dq_dqb.dqb_ihardlimit); 1772 1773 if (limit && buf->f_files > limit) { 1774 buf->f_files = limit; 1775 buf->f_ffree = 1776 (buf->f_files > dquot->dq_dqb.dqb_curinodes) ? 1777 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0; 1778 } 1779 1780 spin_unlock(&dquot->dq_dqb_lock); 1781 dqput(dquot); 1782 return 0; 1783 } 1784 #endif 1785 1786 static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf) 1787 { 1788 struct super_block *sb = dentry->d_sb; 1789 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1790 u64 id = huge_encode_dev(sb->s_bdev->bd_dev); 1791 block_t total_count, user_block_count, start_count; 1792 u64 avail_node_count; 1793 unsigned int total_valid_node_count; 1794 1795 total_count = le64_to_cpu(sbi->raw_super->block_count); 1796 start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr); 1797 buf->f_type = F2FS_SUPER_MAGIC; 1798 buf->f_bsize = sbi->blocksize; 1799 1800 buf->f_blocks = total_count - start_count; 1801 1802 spin_lock(&sbi->stat_lock); 1803 1804 user_block_count = sbi->user_block_count; 1805 total_valid_node_count = valid_node_count(sbi); 1806 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM; 1807 buf->f_bfree = user_block_count - valid_user_blocks(sbi) - 1808 sbi->current_reserved_blocks; 1809 1810 if (unlikely(buf->f_bfree <= sbi->unusable_block_count)) 1811 buf->f_bfree = 0; 1812 else 1813 buf->f_bfree -= sbi->unusable_block_count; 1814 spin_unlock(&sbi->stat_lock); 1815 1816 if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks) 1817 buf->f_bavail = buf->f_bfree - 1818 F2FS_OPTION(sbi).root_reserved_blocks; 1819 else 1820 buf->f_bavail = 0; 1821 1822 if (avail_node_count > user_block_count) { 1823 buf->f_files = user_block_count; 1824 buf->f_ffree = buf->f_bavail; 1825 } else { 1826 buf->f_files = avail_node_count; 1827 buf->f_ffree = min(avail_node_count - total_valid_node_count, 1828 buf->f_bavail); 1829 } 1830 1831 buf->f_namelen = F2FS_NAME_LEN; 1832 buf->f_fsid = u64_to_fsid(id); 1833 1834 #ifdef CONFIG_QUOTA 1835 if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) && 1836 sb_has_quota_limits_enabled(sb, PRJQUOTA)) { 1837 f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf); 1838 } 1839 #endif 1840 return 0; 1841 } 1842 1843 static inline void f2fs_show_quota_options(struct seq_file *seq, 1844 struct super_block *sb) 1845 { 1846 #ifdef CONFIG_QUOTA 1847 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1848 1849 if (F2FS_OPTION(sbi).s_jquota_fmt) { 1850 char *fmtname = ""; 1851 1852 switch (F2FS_OPTION(sbi).s_jquota_fmt) { 1853 case QFMT_VFS_OLD: 1854 fmtname = "vfsold"; 1855 break; 1856 case QFMT_VFS_V0: 1857 fmtname = "vfsv0"; 1858 break; 1859 case QFMT_VFS_V1: 1860 fmtname = "vfsv1"; 1861 break; 1862 } 1863 seq_printf(seq, ",jqfmt=%s", fmtname); 1864 } 1865 1866 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA]) 1867 seq_show_option(seq, "usrjquota", 1868 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]); 1869 1870 if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]) 1871 seq_show_option(seq, "grpjquota", 1872 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]); 1873 1874 if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) 1875 seq_show_option(seq, "prjjquota", 1876 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]); 1877 #endif 1878 } 1879 1880 #ifdef CONFIG_F2FS_FS_COMPRESSION 1881 static inline void f2fs_show_compress_options(struct seq_file *seq, 1882 struct super_block *sb) 1883 { 1884 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1885 char *algtype = ""; 1886 int i; 1887 1888 if (!f2fs_sb_has_compression(sbi)) 1889 return; 1890 1891 switch (F2FS_OPTION(sbi).compress_algorithm) { 1892 case COMPRESS_LZO: 1893 algtype = "lzo"; 1894 break; 1895 case COMPRESS_LZ4: 1896 algtype = "lz4"; 1897 break; 1898 case COMPRESS_ZSTD: 1899 algtype = "zstd"; 1900 break; 1901 case COMPRESS_LZORLE: 1902 algtype = "lzo-rle"; 1903 break; 1904 } 1905 seq_printf(seq, ",compress_algorithm=%s", algtype); 1906 1907 if (F2FS_OPTION(sbi).compress_level) 1908 seq_printf(seq, ":%d", F2FS_OPTION(sbi).compress_level); 1909 1910 seq_printf(seq, ",compress_log_size=%u", 1911 F2FS_OPTION(sbi).compress_log_size); 1912 1913 for (i = 0; i < F2FS_OPTION(sbi).compress_ext_cnt; i++) { 1914 seq_printf(seq, ",compress_extension=%s", 1915 F2FS_OPTION(sbi).extensions[i]); 1916 } 1917 1918 for (i = 0; i < F2FS_OPTION(sbi).nocompress_ext_cnt; i++) { 1919 seq_printf(seq, ",nocompress_extension=%s", 1920 F2FS_OPTION(sbi).noextensions[i]); 1921 } 1922 1923 if (F2FS_OPTION(sbi).compress_chksum) 1924 seq_puts(seq, ",compress_chksum"); 1925 1926 if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_FS) 1927 seq_printf(seq, ",compress_mode=%s", "fs"); 1928 else if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_USER) 1929 seq_printf(seq, ",compress_mode=%s", "user"); 1930 1931 if (test_opt(sbi, COMPRESS_CACHE)) 1932 seq_puts(seq, ",compress_cache"); 1933 } 1934 #endif 1935 1936 static int f2fs_show_options(struct seq_file *seq, struct dentry *root) 1937 { 1938 struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb); 1939 1940 if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_SYNC) 1941 seq_printf(seq, ",background_gc=%s", "sync"); 1942 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_ON) 1943 seq_printf(seq, ",background_gc=%s", "on"); 1944 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF) 1945 seq_printf(seq, ",background_gc=%s", "off"); 1946 1947 if (test_opt(sbi, GC_MERGE)) 1948 seq_puts(seq, ",gc_merge"); 1949 else 1950 seq_puts(seq, ",nogc_merge"); 1951 1952 if (test_opt(sbi, DISABLE_ROLL_FORWARD)) 1953 seq_puts(seq, ",disable_roll_forward"); 1954 if (test_opt(sbi, NORECOVERY)) 1955 seq_puts(seq, ",norecovery"); 1956 if (test_opt(sbi, DISCARD)) { 1957 seq_puts(seq, ",discard"); 1958 if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_BLOCK) 1959 seq_printf(seq, ",discard_unit=%s", "block"); 1960 else if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SEGMENT) 1961 seq_printf(seq, ",discard_unit=%s", "segment"); 1962 else if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SECTION) 1963 seq_printf(seq, ",discard_unit=%s", "section"); 1964 } else { 1965 seq_puts(seq, ",nodiscard"); 1966 } 1967 #ifdef CONFIG_F2FS_FS_XATTR 1968 if (test_opt(sbi, XATTR_USER)) 1969 seq_puts(seq, ",user_xattr"); 1970 else 1971 seq_puts(seq, ",nouser_xattr"); 1972 if (test_opt(sbi, INLINE_XATTR)) 1973 seq_puts(seq, ",inline_xattr"); 1974 else 1975 seq_puts(seq, ",noinline_xattr"); 1976 if (test_opt(sbi, INLINE_XATTR_SIZE)) 1977 seq_printf(seq, ",inline_xattr_size=%u", 1978 F2FS_OPTION(sbi).inline_xattr_size); 1979 #endif 1980 #ifdef CONFIG_F2FS_FS_POSIX_ACL 1981 if (test_opt(sbi, POSIX_ACL)) 1982 seq_puts(seq, ",acl"); 1983 else 1984 seq_puts(seq, ",noacl"); 1985 #endif 1986 if (test_opt(sbi, DISABLE_EXT_IDENTIFY)) 1987 seq_puts(seq, ",disable_ext_identify"); 1988 if (test_opt(sbi, INLINE_DATA)) 1989 seq_puts(seq, ",inline_data"); 1990 else 1991 seq_puts(seq, ",noinline_data"); 1992 if (test_opt(sbi, INLINE_DENTRY)) 1993 seq_puts(seq, ",inline_dentry"); 1994 else 1995 seq_puts(seq, ",noinline_dentry"); 1996 if (test_opt(sbi, FLUSH_MERGE)) 1997 seq_puts(seq, ",flush_merge"); 1998 else 1999 seq_puts(seq, ",noflush_merge"); 2000 if (test_opt(sbi, NOBARRIER)) 2001 seq_puts(seq, ",nobarrier"); 2002 else 2003 seq_puts(seq, ",barrier"); 2004 if (test_opt(sbi, FASTBOOT)) 2005 seq_puts(seq, ",fastboot"); 2006 if (test_opt(sbi, READ_EXTENT_CACHE)) 2007 seq_puts(seq, ",extent_cache"); 2008 else 2009 seq_puts(seq, ",noextent_cache"); 2010 if (test_opt(sbi, AGE_EXTENT_CACHE)) 2011 seq_puts(seq, ",age_extent_cache"); 2012 if (test_opt(sbi, DATA_FLUSH)) 2013 seq_puts(seq, ",data_flush"); 2014 2015 seq_puts(seq, ",mode="); 2016 if (F2FS_OPTION(sbi).fs_mode == FS_MODE_ADAPTIVE) 2017 seq_puts(seq, "adaptive"); 2018 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_LFS) 2019 seq_puts(seq, "lfs"); 2020 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_SEG) 2021 seq_puts(seq, "fragment:segment"); 2022 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_BLK) 2023 seq_puts(seq, "fragment:block"); 2024 seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs); 2025 if (test_opt(sbi, RESERVE_ROOT)) 2026 seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u", 2027 F2FS_OPTION(sbi).root_reserved_blocks, 2028 from_kuid_munged(&init_user_ns, 2029 F2FS_OPTION(sbi).s_resuid), 2030 from_kgid_munged(&init_user_ns, 2031 F2FS_OPTION(sbi).s_resgid)); 2032 #ifdef CONFIG_F2FS_FAULT_INJECTION 2033 if (test_opt(sbi, FAULT_INJECTION)) { 2034 seq_printf(seq, ",fault_injection=%u", 2035 F2FS_OPTION(sbi).fault_info.inject_rate); 2036 seq_printf(seq, ",fault_type=%u", 2037 F2FS_OPTION(sbi).fault_info.inject_type); 2038 } 2039 #endif 2040 #ifdef CONFIG_QUOTA 2041 if (test_opt(sbi, QUOTA)) 2042 seq_puts(seq, ",quota"); 2043 if (test_opt(sbi, USRQUOTA)) 2044 seq_puts(seq, ",usrquota"); 2045 if (test_opt(sbi, GRPQUOTA)) 2046 seq_puts(seq, ",grpquota"); 2047 if (test_opt(sbi, PRJQUOTA)) 2048 seq_puts(seq, ",prjquota"); 2049 #endif 2050 f2fs_show_quota_options(seq, sbi->sb); 2051 2052 fscrypt_show_test_dummy_encryption(seq, ',', sbi->sb); 2053 2054 if (sbi->sb->s_flags & SB_INLINECRYPT) 2055 seq_puts(seq, ",inlinecrypt"); 2056 2057 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT) 2058 seq_printf(seq, ",alloc_mode=%s", "default"); 2059 else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE) 2060 seq_printf(seq, ",alloc_mode=%s", "reuse"); 2061 2062 if (test_opt(sbi, DISABLE_CHECKPOINT)) 2063 seq_printf(seq, ",checkpoint=disable:%u", 2064 F2FS_OPTION(sbi).unusable_cap); 2065 if (test_opt(sbi, MERGE_CHECKPOINT)) 2066 seq_puts(seq, ",checkpoint_merge"); 2067 else 2068 seq_puts(seq, ",nocheckpoint_merge"); 2069 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX) 2070 seq_printf(seq, ",fsync_mode=%s", "posix"); 2071 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) 2072 seq_printf(seq, ",fsync_mode=%s", "strict"); 2073 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER) 2074 seq_printf(seq, ",fsync_mode=%s", "nobarrier"); 2075 2076 #ifdef CONFIG_F2FS_FS_COMPRESSION 2077 f2fs_show_compress_options(seq, sbi->sb); 2078 #endif 2079 2080 if (test_opt(sbi, ATGC)) 2081 seq_puts(seq, ",atgc"); 2082 2083 if (F2FS_OPTION(sbi).memory_mode == MEMORY_MODE_NORMAL) 2084 seq_printf(seq, ",memory=%s", "normal"); 2085 else if (F2FS_OPTION(sbi).memory_mode == MEMORY_MODE_LOW) 2086 seq_printf(seq, ",memory=%s", "low"); 2087 2088 if (F2FS_OPTION(sbi).errors == MOUNT_ERRORS_READONLY) 2089 seq_printf(seq, ",errors=%s", "remount-ro"); 2090 else if (F2FS_OPTION(sbi).errors == MOUNT_ERRORS_CONTINUE) 2091 seq_printf(seq, ",errors=%s", "continue"); 2092 else if (F2FS_OPTION(sbi).errors == MOUNT_ERRORS_PANIC) 2093 seq_printf(seq, ",errors=%s", "panic"); 2094 2095 return 0; 2096 } 2097 2098 static void default_options(struct f2fs_sb_info *sbi, bool remount) 2099 { 2100 /* init some FS parameters */ 2101 if (!remount) { 2102 set_opt(sbi, READ_EXTENT_CACHE); 2103 clear_opt(sbi, DISABLE_CHECKPOINT); 2104 2105 if (f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) 2106 set_opt(sbi, DISCARD); 2107 2108 if (f2fs_sb_has_blkzoned(sbi)) 2109 F2FS_OPTION(sbi).discard_unit = DISCARD_UNIT_SECTION; 2110 else 2111 F2FS_OPTION(sbi).discard_unit = DISCARD_UNIT_BLOCK; 2112 } 2113 2114 if (f2fs_sb_has_readonly(sbi)) 2115 F2FS_OPTION(sbi).active_logs = NR_CURSEG_RO_TYPE; 2116 else 2117 F2FS_OPTION(sbi).active_logs = NR_CURSEG_PERSIST_TYPE; 2118 2119 F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS; 2120 if (le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_main) <= 2121 SMALL_VOLUME_SEGMENTS) 2122 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE; 2123 else 2124 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT; 2125 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX; 2126 F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID); 2127 F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID); 2128 if (f2fs_sb_has_compression(sbi)) { 2129 F2FS_OPTION(sbi).compress_algorithm = COMPRESS_LZ4; 2130 F2FS_OPTION(sbi).compress_log_size = MIN_COMPRESS_LOG_SIZE; 2131 F2FS_OPTION(sbi).compress_ext_cnt = 0; 2132 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS; 2133 } 2134 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON; 2135 F2FS_OPTION(sbi).memory_mode = MEMORY_MODE_NORMAL; 2136 F2FS_OPTION(sbi).errors = MOUNT_ERRORS_CONTINUE; 2137 2138 set_opt(sbi, INLINE_XATTR); 2139 set_opt(sbi, INLINE_DATA); 2140 set_opt(sbi, INLINE_DENTRY); 2141 set_opt(sbi, MERGE_CHECKPOINT); 2142 F2FS_OPTION(sbi).unusable_cap = 0; 2143 sbi->sb->s_flags |= SB_LAZYTIME; 2144 if (!f2fs_is_readonly(sbi)) 2145 set_opt(sbi, FLUSH_MERGE); 2146 if (f2fs_sb_has_blkzoned(sbi)) 2147 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS; 2148 else 2149 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE; 2150 2151 #ifdef CONFIG_F2FS_FS_XATTR 2152 set_opt(sbi, XATTR_USER); 2153 #endif 2154 #ifdef CONFIG_F2FS_FS_POSIX_ACL 2155 set_opt(sbi, POSIX_ACL); 2156 #endif 2157 2158 f2fs_build_fault_attr(sbi, 0, 0); 2159 } 2160 2161 #ifdef CONFIG_QUOTA 2162 static int f2fs_enable_quotas(struct super_block *sb); 2163 #endif 2164 2165 static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi) 2166 { 2167 unsigned int s_flags = sbi->sb->s_flags; 2168 struct cp_control cpc; 2169 unsigned int gc_mode = sbi->gc_mode; 2170 int err = 0; 2171 int ret; 2172 block_t unusable; 2173 2174 if (s_flags & SB_RDONLY) { 2175 f2fs_err(sbi, "checkpoint=disable on readonly fs"); 2176 return -EINVAL; 2177 } 2178 sbi->sb->s_flags |= SB_ACTIVE; 2179 2180 /* check if we need more GC first */ 2181 unusable = f2fs_get_unusable_blocks(sbi); 2182 if (!f2fs_disable_cp_again(sbi, unusable)) 2183 goto skip_gc; 2184 2185 f2fs_update_time(sbi, DISABLE_TIME); 2186 2187 sbi->gc_mode = GC_URGENT_HIGH; 2188 2189 while (!f2fs_time_over(sbi, DISABLE_TIME)) { 2190 struct f2fs_gc_control gc_control = { 2191 .victim_segno = NULL_SEGNO, 2192 .init_gc_type = FG_GC, 2193 .should_migrate_blocks = false, 2194 .err_gc_skipped = true, 2195 .no_bg_gc = true, 2196 .nr_free_secs = 1 }; 2197 2198 f2fs_down_write(&sbi->gc_lock); 2199 stat_inc_gc_call_count(sbi, FOREGROUND); 2200 err = f2fs_gc(sbi, &gc_control); 2201 if (err == -ENODATA) { 2202 err = 0; 2203 break; 2204 } 2205 if (err && err != -EAGAIN) 2206 break; 2207 } 2208 2209 ret = sync_filesystem(sbi->sb); 2210 if (ret || err) { 2211 err = ret ? ret : err; 2212 goto restore_flag; 2213 } 2214 2215 unusable = f2fs_get_unusable_blocks(sbi); 2216 if (f2fs_disable_cp_again(sbi, unusable)) { 2217 err = -EAGAIN; 2218 goto restore_flag; 2219 } 2220 2221 skip_gc: 2222 f2fs_down_write(&sbi->gc_lock); 2223 cpc.reason = CP_PAUSE; 2224 set_sbi_flag(sbi, SBI_CP_DISABLED); 2225 stat_inc_cp_call_count(sbi, TOTAL_CALL); 2226 err = f2fs_write_checkpoint(sbi, &cpc); 2227 if (err) 2228 goto out_unlock; 2229 2230 spin_lock(&sbi->stat_lock); 2231 sbi->unusable_block_count = unusable; 2232 spin_unlock(&sbi->stat_lock); 2233 2234 out_unlock: 2235 f2fs_up_write(&sbi->gc_lock); 2236 restore_flag: 2237 sbi->gc_mode = gc_mode; 2238 sbi->sb->s_flags = s_flags; /* Restore SB_RDONLY status */ 2239 return err; 2240 } 2241 2242 static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi) 2243 { 2244 int retry = DEFAULT_RETRY_IO_COUNT; 2245 2246 /* we should flush all the data to keep data consistency */ 2247 do { 2248 sync_inodes_sb(sbi->sb); 2249 f2fs_io_schedule_timeout(DEFAULT_IO_TIMEOUT); 2250 } while (get_pages(sbi, F2FS_DIRTY_DATA) && retry--); 2251 2252 if (unlikely(retry < 0)) 2253 f2fs_warn(sbi, "checkpoint=enable has some unwritten data."); 2254 2255 f2fs_down_write(&sbi->gc_lock); 2256 f2fs_dirty_to_prefree(sbi); 2257 2258 clear_sbi_flag(sbi, SBI_CP_DISABLED); 2259 set_sbi_flag(sbi, SBI_IS_DIRTY); 2260 f2fs_up_write(&sbi->gc_lock); 2261 2262 f2fs_sync_fs(sbi->sb, 1); 2263 2264 /* Let's ensure there's no pending checkpoint anymore */ 2265 f2fs_flush_ckpt_thread(sbi); 2266 } 2267 2268 static int f2fs_remount(struct super_block *sb, int *flags, char *data) 2269 { 2270 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2271 struct f2fs_mount_info org_mount_opt; 2272 unsigned long old_sb_flags; 2273 int err; 2274 bool need_restart_gc = false, need_stop_gc = false; 2275 bool need_restart_flush = false, need_stop_flush = false; 2276 bool need_restart_discard = false, need_stop_discard = false; 2277 bool need_enable_checkpoint = false, need_disable_checkpoint = false; 2278 bool no_read_extent_cache = !test_opt(sbi, READ_EXTENT_CACHE); 2279 bool no_age_extent_cache = !test_opt(sbi, AGE_EXTENT_CACHE); 2280 bool enable_checkpoint = !test_opt(sbi, DISABLE_CHECKPOINT); 2281 bool no_atgc = !test_opt(sbi, ATGC); 2282 bool no_discard = !test_opt(sbi, DISCARD); 2283 bool no_compress_cache = !test_opt(sbi, COMPRESS_CACHE); 2284 bool block_unit_discard = f2fs_block_unit_discard(sbi); 2285 #ifdef CONFIG_QUOTA 2286 int i, j; 2287 #endif 2288 2289 /* 2290 * Save the old mount options in case we 2291 * need to restore them. 2292 */ 2293 org_mount_opt = sbi->mount_opt; 2294 old_sb_flags = sb->s_flags; 2295 2296 #ifdef CONFIG_QUOTA 2297 org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt; 2298 for (i = 0; i < MAXQUOTAS; i++) { 2299 if (F2FS_OPTION(sbi).s_qf_names[i]) { 2300 org_mount_opt.s_qf_names[i] = 2301 kstrdup(F2FS_OPTION(sbi).s_qf_names[i], 2302 GFP_KERNEL); 2303 if (!org_mount_opt.s_qf_names[i]) { 2304 for (j = 0; j < i; j++) 2305 kfree(org_mount_opt.s_qf_names[j]); 2306 return -ENOMEM; 2307 } 2308 } else { 2309 org_mount_opt.s_qf_names[i] = NULL; 2310 } 2311 } 2312 #endif 2313 2314 /* recover superblocks we couldn't write due to previous RO mount */ 2315 if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) { 2316 err = f2fs_commit_super(sbi, false); 2317 f2fs_info(sbi, "Try to recover all the superblocks, ret: %d", 2318 err); 2319 if (!err) 2320 clear_sbi_flag(sbi, SBI_NEED_SB_WRITE); 2321 } 2322 2323 default_options(sbi, true); 2324 2325 /* parse mount options */ 2326 err = parse_options(sb, data, true); 2327 if (err) 2328 goto restore_opts; 2329 2330 #ifdef CONFIG_BLK_DEV_ZONED 2331 if (f2fs_sb_has_blkzoned(sbi) && 2332 sbi->max_open_zones < F2FS_OPTION(sbi).active_logs) { 2333 f2fs_err(sbi, 2334 "zoned: max open zones %u is too small, need at least %u open zones", 2335 sbi->max_open_zones, F2FS_OPTION(sbi).active_logs); 2336 err = -EINVAL; 2337 goto restore_opts; 2338 } 2339 #endif 2340 2341 /* flush outstanding errors before changing fs state */ 2342 flush_work(&sbi->s_error_work); 2343 2344 /* 2345 * Previous and new state of filesystem is RO, 2346 * so skip checking GC and FLUSH_MERGE conditions. 2347 */ 2348 if (f2fs_readonly(sb) && (*flags & SB_RDONLY)) 2349 goto skip; 2350 2351 if (f2fs_dev_is_readonly(sbi) && !(*flags & SB_RDONLY)) { 2352 err = -EROFS; 2353 goto restore_opts; 2354 } 2355 2356 #ifdef CONFIG_QUOTA 2357 if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) { 2358 err = dquot_suspend(sb, -1); 2359 if (err < 0) 2360 goto restore_opts; 2361 } else if (f2fs_readonly(sb) && !(*flags & SB_RDONLY)) { 2362 /* dquot_resume needs RW */ 2363 sb->s_flags &= ~SB_RDONLY; 2364 if (sb_any_quota_suspended(sb)) { 2365 dquot_resume(sb, -1); 2366 } else if (f2fs_sb_has_quota_ino(sbi)) { 2367 err = f2fs_enable_quotas(sb); 2368 if (err) 2369 goto restore_opts; 2370 } 2371 } 2372 #endif 2373 if (f2fs_lfs_mode(sbi) && !IS_F2FS_IPU_DISABLE(sbi)) { 2374 err = -EINVAL; 2375 f2fs_warn(sbi, "LFS is not compatible with IPU"); 2376 goto restore_opts; 2377 } 2378 2379 /* disallow enable atgc dynamically */ 2380 if (no_atgc == !!test_opt(sbi, ATGC)) { 2381 err = -EINVAL; 2382 f2fs_warn(sbi, "switch atgc option is not allowed"); 2383 goto restore_opts; 2384 } 2385 2386 /* disallow enable/disable extent_cache dynamically */ 2387 if (no_read_extent_cache == !!test_opt(sbi, READ_EXTENT_CACHE)) { 2388 err = -EINVAL; 2389 f2fs_warn(sbi, "switch extent_cache option is not allowed"); 2390 goto restore_opts; 2391 } 2392 /* disallow enable/disable age extent_cache dynamically */ 2393 if (no_age_extent_cache == !!test_opt(sbi, AGE_EXTENT_CACHE)) { 2394 err = -EINVAL; 2395 f2fs_warn(sbi, "switch age_extent_cache option is not allowed"); 2396 goto restore_opts; 2397 } 2398 2399 if (no_compress_cache == !!test_opt(sbi, COMPRESS_CACHE)) { 2400 err = -EINVAL; 2401 f2fs_warn(sbi, "switch compress_cache option is not allowed"); 2402 goto restore_opts; 2403 } 2404 2405 if (block_unit_discard != f2fs_block_unit_discard(sbi)) { 2406 err = -EINVAL; 2407 f2fs_warn(sbi, "switch discard_unit option is not allowed"); 2408 goto restore_opts; 2409 } 2410 2411 if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) { 2412 err = -EINVAL; 2413 f2fs_warn(sbi, "disabling checkpoint not compatible with read-only"); 2414 goto restore_opts; 2415 } 2416 2417 /* 2418 * We stop the GC thread if FS is mounted as RO 2419 * or if background_gc = off is passed in mount 2420 * option. Also sync the filesystem. 2421 */ 2422 if ((*flags & SB_RDONLY) || 2423 (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF && 2424 !test_opt(sbi, GC_MERGE))) { 2425 if (sbi->gc_thread) { 2426 f2fs_stop_gc_thread(sbi); 2427 need_restart_gc = true; 2428 } 2429 } else if (!sbi->gc_thread) { 2430 err = f2fs_start_gc_thread(sbi); 2431 if (err) 2432 goto restore_opts; 2433 need_stop_gc = true; 2434 } 2435 2436 if (*flags & SB_RDONLY) { 2437 sync_inodes_sb(sb); 2438 2439 set_sbi_flag(sbi, SBI_IS_DIRTY); 2440 set_sbi_flag(sbi, SBI_IS_CLOSE); 2441 f2fs_sync_fs(sb, 1); 2442 clear_sbi_flag(sbi, SBI_IS_CLOSE); 2443 } 2444 2445 /* 2446 * We stop issue flush thread if FS is mounted as RO 2447 * or if flush_merge is not passed in mount option. 2448 */ 2449 if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) { 2450 clear_opt(sbi, FLUSH_MERGE); 2451 f2fs_destroy_flush_cmd_control(sbi, false); 2452 need_restart_flush = true; 2453 } else { 2454 err = f2fs_create_flush_cmd_control(sbi); 2455 if (err) 2456 goto restore_gc; 2457 need_stop_flush = true; 2458 } 2459 2460 if (no_discard == !!test_opt(sbi, DISCARD)) { 2461 if (test_opt(sbi, DISCARD)) { 2462 err = f2fs_start_discard_thread(sbi); 2463 if (err) 2464 goto restore_flush; 2465 need_stop_discard = true; 2466 } else { 2467 f2fs_stop_discard_thread(sbi); 2468 f2fs_issue_discard_timeout(sbi); 2469 need_restart_discard = true; 2470 } 2471 } 2472 2473 if (enable_checkpoint == !!test_opt(sbi, DISABLE_CHECKPOINT)) { 2474 if (test_opt(sbi, DISABLE_CHECKPOINT)) { 2475 err = f2fs_disable_checkpoint(sbi); 2476 if (err) 2477 goto restore_discard; 2478 need_enable_checkpoint = true; 2479 } else { 2480 f2fs_enable_checkpoint(sbi); 2481 need_disable_checkpoint = true; 2482 } 2483 } 2484 2485 /* 2486 * Place this routine at the end, since a new checkpoint would be 2487 * triggered while remount and we need to take care of it before 2488 * returning from remount. 2489 */ 2490 if ((*flags & SB_RDONLY) || test_opt(sbi, DISABLE_CHECKPOINT) || 2491 !test_opt(sbi, MERGE_CHECKPOINT)) { 2492 f2fs_stop_ckpt_thread(sbi); 2493 } else { 2494 /* Flush if the prevous checkpoint, if exists. */ 2495 f2fs_flush_ckpt_thread(sbi); 2496 2497 err = f2fs_start_ckpt_thread(sbi); 2498 if (err) { 2499 f2fs_err(sbi, 2500 "Failed to start F2FS issue_checkpoint_thread (%d)", 2501 err); 2502 goto restore_checkpoint; 2503 } 2504 } 2505 2506 skip: 2507 #ifdef CONFIG_QUOTA 2508 /* Release old quota file names */ 2509 for (i = 0; i < MAXQUOTAS; i++) 2510 kfree(org_mount_opt.s_qf_names[i]); 2511 #endif 2512 /* Update the POSIXACL Flag */ 2513 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) | 2514 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0); 2515 2516 limit_reserve_root(sbi); 2517 adjust_unusable_cap_perc(sbi); 2518 *flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME); 2519 return 0; 2520 restore_checkpoint: 2521 if (need_enable_checkpoint) { 2522 f2fs_enable_checkpoint(sbi); 2523 } else if (need_disable_checkpoint) { 2524 if (f2fs_disable_checkpoint(sbi)) 2525 f2fs_warn(sbi, "checkpoint has not been disabled"); 2526 } 2527 restore_discard: 2528 if (need_restart_discard) { 2529 if (f2fs_start_discard_thread(sbi)) 2530 f2fs_warn(sbi, "discard has been stopped"); 2531 } else if (need_stop_discard) { 2532 f2fs_stop_discard_thread(sbi); 2533 } 2534 restore_flush: 2535 if (need_restart_flush) { 2536 if (f2fs_create_flush_cmd_control(sbi)) 2537 f2fs_warn(sbi, "background flush thread has stopped"); 2538 } else if (need_stop_flush) { 2539 clear_opt(sbi, FLUSH_MERGE); 2540 f2fs_destroy_flush_cmd_control(sbi, false); 2541 } 2542 restore_gc: 2543 if (need_restart_gc) { 2544 if (f2fs_start_gc_thread(sbi)) 2545 f2fs_warn(sbi, "background gc thread has stopped"); 2546 } else if (need_stop_gc) { 2547 f2fs_stop_gc_thread(sbi); 2548 } 2549 restore_opts: 2550 #ifdef CONFIG_QUOTA 2551 F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt; 2552 for (i = 0; i < MAXQUOTAS; i++) { 2553 kfree(F2FS_OPTION(sbi).s_qf_names[i]); 2554 F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i]; 2555 } 2556 #endif 2557 sbi->mount_opt = org_mount_opt; 2558 sb->s_flags = old_sb_flags; 2559 return err; 2560 } 2561 2562 static void f2fs_shutdown(struct super_block *sb) 2563 { 2564 f2fs_do_shutdown(F2FS_SB(sb), F2FS_GOING_DOWN_NOSYNC, false); 2565 } 2566 2567 #ifdef CONFIG_QUOTA 2568 static bool f2fs_need_recovery(struct f2fs_sb_info *sbi) 2569 { 2570 /* need to recovery orphan */ 2571 if (is_set_ckpt_flags(sbi, CP_ORPHAN_PRESENT_FLAG)) 2572 return true; 2573 /* need to recovery data */ 2574 if (test_opt(sbi, DISABLE_ROLL_FORWARD)) 2575 return false; 2576 if (test_opt(sbi, NORECOVERY)) 2577 return false; 2578 return !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG); 2579 } 2580 2581 static bool f2fs_recover_quota_begin(struct f2fs_sb_info *sbi) 2582 { 2583 bool readonly = f2fs_readonly(sbi->sb); 2584 2585 if (!f2fs_need_recovery(sbi)) 2586 return false; 2587 2588 /* it doesn't need to check f2fs_sb_has_readonly() */ 2589 if (f2fs_hw_is_readonly(sbi)) 2590 return false; 2591 2592 if (readonly) { 2593 sbi->sb->s_flags &= ~SB_RDONLY; 2594 set_sbi_flag(sbi, SBI_IS_WRITABLE); 2595 } 2596 2597 /* 2598 * Turn on quotas which were not enabled for read-only mounts if 2599 * filesystem has quota feature, so that they are updated correctly. 2600 */ 2601 return f2fs_enable_quota_files(sbi, readonly); 2602 } 2603 2604 static void f2fs_recover_quota_end(struct f2fs_sb_info *sbi, 2605 bool quota_enabled) 2606 { 2607 if (quota_enabled) 2608 f2fs_quota_off_umount(sbi->sb); 2609 2610 if (is_sbi_flag_set(sbi, SBI_IS_WRITABLE)) { 2611 clear_sbi_flag(sbi, SBI_IS_WRITABLE); 2612 sbi->sb->s_flags |= SB_RDONLY; 2613 } 2614 } 2615 2616 /* Read data from quotafile */ 2617 static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data, 2618 size_t len, loff_t off) 2619 { 2620 struct inode *inode = sb_dqopt(sb)->files[type]; 2621 struct address_space *mapping = inode->i_mapping; 2622 block_t blkidx = F2FS_BYTES_TO_BLK(off); 2623 int offset = off & (sb->s_blocksize - 1); 2624 int tocopy; 2625 size_t toread; 2626 loff_t i_size = i_size_read(inode); 2627 struct page *page; 2628 2629 if (off > i_size) 2630 return 0; 2631 2632 if (off + len > i_size) 2633 len = i_size - off; 2634 toread = len; 2635 while (toread > 0) { 2636 tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread); 2637 repeat: 2638 page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS); 2639 if (IS_ERR(page)) { 2640 if (PTR_ERR(page) == -ENOMEM) { 2641 memalloc_retry_wait(GFP_NOFS); 2642 goto repeat; 2643 } 2644 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2645 return PTR_ERR(page); 2646 } 2647 2648 lock_page(page); 2649 2650 if (unlikely(page->mapping != mapping)) { 2651 f2fs_put_page(page, 1); 2652 goto repeat; 2653 } 2654 if (unlikely(!PageUptodate(page))) { 2655 f2fs_put_page(page, 1); 2656 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2657 return -EIO; 2658 } 2659 2660 memcpy_from_page(data, page, offset, tocopy); 2661 f2fs_put_page(page, 1); 2662 2663 offset = 0; 2664 toread -= tocopy; 2665 data += tocopy; 2666 blkidx++; 2667 } 2668 return len; 2669 } 2670 2671 /* Write to quotafile */ 2672 static ssize_t f2fs_quota_write(struct super_block *sb, int type, 2673 const char *data, size_t len, loff_t off) 2674 { 2675 struct inode *inode = sb_dqopt(sb)->files[type]; 2676 struct address_space *mapping = inode->i_mapping; 2677 const struct address_space_operations *a_ops = mapping->a_ops; 2678 int offset = off & (sb->s_blocksize - 1); 2679 size_t towrite = len; 2680 struct folio *folio; 2681 void *fsdata = NULL; 2682 int err = 0; 2683 int tocopy; 2684 2685 while (towrite > 0) { 2686 tocopy = min_t(unsigned long, sb->s_blocksize - offset, 2687 towrite); 2688 retry: 2689 err = a_ops->write_begin(NULL, mapping, off, tocopy, 2690 &folio, &fsdata); 2691 if (unlikely(err)) { 2692 if (err == -ENOMEM) { 2693 f2fs_io_schedule_timeout(DEFAULT_IO_TIMEOUT); 2694 goto retry; 2695 } 2696 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2697 break; 2698 } 2699 2700 memcpy_to_folio(folio, offset_in_folio(folio, off), data, tocopy); 2701 2702 a_ops->write_end(NULL, mapping, off, tocopy, tocopy, 2703 folio, fsdata); 2704 offset = 0; 2705 towrite -= tocopy; 2706 off += tocopy; 2707 data += tocopy; 2708 cond_resched(); 2709 } 2710 2711 if (len == towrite) 2712 return err; 2713 inode_set_mtime_to_ts(inode, inode_set_ctime_current(inode)); 2714 f2fs_mark_inode_dirty_sync(inode, false); 2715 return len - towrite; 2716 } 2717 2718 int f2fs_dquot_initialize(struct inode *inode) 2719 { 2720 if (time_to_inject(F2FS_I_SB(inode), FAULT_DQUOT_INIT)) 2721 return -ESRCH; 2722 2723 return dquot_initialize(inode); 2724 } 2725 2726 static struct dquot __rcu **f2fs_get_dquots(struct inode *inode) 2727 { 2728 return F2FS_I(inode)->i_dquot; 2729 } 2730 2731 static qsize_t *f2fs_get_reserved_space(struct inode *inode) 2732 { 2733 return &F2FS_I(inode)->i_reserved_quota; 2734 } 2735 2736 static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type) 2737 { 2738 if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) { 2739 f2fs_err(sbi, "quota sysfile may be corrupted, skip loading it"); 2740 return 0; 2741 } 2742 2743 return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type], 2744 F2FS_OPTION(sbi).s_jquota_fmt, type); 2745 } 2746 2747 int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly) 2748 { 2749 int enabled = 0; 2750 int i, err; 2751 2752 if (f2fs_sb_has_quota_ino(sbi) && rdonly) { 2753 err = f2fs_enable_quotas(sbi->sb); 2754 if (err) { 2755 f2fs_err(sbi, "Cannot turn on quota_ino: %d", err); 2756 return 0; 2757 } 2758 return 1; 2759 } 2760 2761 for (i = 0; i < MAXQUOTAS; i++) { 2762 if (F2FS_OPTION(sbi).s_qf_names[i]) { 2763 err = f2fs_quota_on_mount(sbi, i); 2764 if (!err) { 2765 enabled = 1; 2766 continue; 2767 } 2768 f2fs_err(sbi, "Cannot turn on quotas: %d on %d", 2769 err, i); 2770 } 2771 } 2772 return enabled; 2773 } 2774 2775 static int f2fs_quota_enable(struct super_block *sb, int type, int format_id, 2776 unsigned int flags) 2777 { 2778 struct inode *qf_inode; 2779 unsigned long qf_inum; 2780 unsigned long qf_flag = F2FS_QUOTA_DEFAULT_FL; 2781 int err; 2782 2783 BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb))); 2784 2785 qf_inum = f2fs_qf_ino(sb, type); 2786 if (!qf_inum) 2787 return -EPERM; 2788 2789 qf_inode = f2fs_iget(sb, qf_inum); 2790 if (IS_ERR(qf_inode)) { 2791 f2fs_err(F2FS_SB(sb), "Bad quota inode %u:%lu", type, qf_inum); 2792 return PTR_ERR(qf_inode); 2793 } 2794 2795 /* Don't account quota for quota files to avoid recursion */ 2796 inode_lock(qf_inode); 2797 qf_inode->i_flags |= S_NOQUOTA; 2798 2799 if ((F2FS_I(qf_inode)->i_flags & qf_flag) != qf_flag) { 2800 F2FS_I(qf_inode)->i_flags |= qf_flag; 2801 f2fs_set_inode_flags(qf_inode); 2802 } 2803 inode_unlock(qf_inode); 2804 2805 err = dquot_load_quota_inode(qf_inode, type, format_id, flags); 2806 iput(qf_inode); 2807 return err; 2808 } 2809 2810 static int f2fs_enable_quotas(struct super_block *sb) 2811 { 2812 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2813 int type, err = 0; 2814 unsigned long qf_inum; 2815 bool quota_mopt[MAXQUOTAS] = { 2816 test_opt(sbi, USRQUOTA), 2817 test_opt(sbi, GRPQUOTA), 2818 test_opt(sbi, PRJQUOTA), 2819 }; 2820 2821 if (is_set_ckpt_flags(F2FS_SB(sb), CP_QUOTA_NEED_FSCK_FLAG)) { 2822 f2fs_err(sbi, "quota file may be corrupted, skip loading it"); 2823 return 0; 2824 } 2825 2826 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE; 2827 2828 for (type = 0; type < MAXQUOTAS; type++) { 2829 qf_inum = f2fs_qf_ino(sb, type); 2830 if (qf_inum) { 2831 err = f2fs_quota_enable(sb, type, QFMT_VFS_V1, 2832 DQUOT_USAGE_ENABLED | 2833 (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0)); 2834 if (err) { 2835 f2fs_err(sbi, "Failed to enable quota tracking (type=%d, err=%d). Please run fsck to fix.", 2836 type, err); 2837 for (type--; type >= 0; type--) 2838 dquot_quota_off(sb, type); 2839 set_sbi_flag(F2FS_SB(sb), 2840 SBI_QUOTA_NEED_REPAIR); 2841 return err; 2842 } 2843 } 2844 } 2845 return 0; 2846 } 2847 2848 static int f2fs_quota_sync_file(struct f2fs_sb_info *sbi, int type) 2849 { 2850 struct quota_info *dqopt = sb_dqopt(sbi->sb); 2851 struct address_space *mapping = dqopt->files[type]->i_mapping; 2852 int ret = 0; 2853 2854 ret = dquot_writeback_dquots(sbi->sb, type); 2855 if (ret) 2856 goto out; 2857 2858 ret = filemap_fdatawrite(mapping); 2859 if (ret) 2860 goto out; 2861 2862 /* if we are using journalled quota */ 2863 if (is_journalled_quota(sbi)) 2864 goto out; 2865 2866 ret = filemap_fdatawait(mapping); 2867 2868 truncate_inode_pages(&dqopt->files[type]->i_data, 0); 2869 out: 2870 if (ret) 2871 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2872 return ret; 2873 } 2874 2875 int f2fs_quota_sync(struct super_block *sb, int type) 2876 { 2877 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2878 struct quota_info *dqopt = sb_dqopt(sb); 2879 int cnt; 2880 int ret = 0; 2881 2882 /* 2883 * Now when everything is written we can discard the pagecache so 2884 * that userspace sees the changes. 2885 */ 2886 for (cnt = 0; cnt < MAXQUOTAS; cnt++) { 2887 2888 if (type != -1 && cnt != type) 2889 continue; 2890 2891 if (!sb_has_quota_active(sb, cnt)) 2892 continue; 2893 2894 if (!f2fs_sb_has_quota_ino(sbi)) 2895 inode_lock(dqopt->files[cnt]); 2896 2897 /* 2898 * do_quotactl 2899 * f2fs_quota_sync 2900 * f2fs_down_read(quota_sem) 2901 * dquot_writeback_dquots() 2902 * f2fs_dquot_commit 2903 * block_operation 2904 * f2fs_down_read(quota_sem) 2905 */ 2906 f2fs_lock_op(sbi); 2907 f2fs_down_read(&sbi->quota_sem); 2908 2909 ret = f2fs_quota_sync_file(sbi, cnt); 2910 2911 f2fs_up_read(&sbi->quota_sem); 2912 f2fs_unlock_op(sbi); 2913 2914 if (!f2fs_sb_has_quota_ino(sbi)) 2915 inode_unlock(dqopt->files[cnt]); 2916 2917 if (ret) 2918 break; 2919 } 2920 return ret; 2921 } 2922 2923 static int f2fs_quota_on(struct super_block *sb, int type, int format_id, 2924 const struct path *path) 2925 { 2926 struct inode *inode; 2927 int err; 2928 2929 /* if quota sysfile exists, deny enabling quota with specific file */ 2930 if (f2fs_sb_has_quota_ino(F2FS_SB(sb))) { 2931 f2fs_err(F2FS_SB(sb), "quota sysfile already exists"); 2932 return -EBUSY; 2933 } 2934 2935 if (path->dentry->d_sb != sb) 2936 return -EXDEV; 2937 2938 err = f2fs_quota_sync(sb, type); 2939 if (err) 2940 return err; 2941 2942 inode = d_inode(path->dentry); 2943 2944 err = filemap_fdatawrite(inode->i_mapping); 2945 if (err) 2946 return err; 2947 2948 err = filemap_fdatawait(inode->i_mapping); 2949 if (err) 2950 return err; 2951 2952 err = dquot_quota_on(sb, type, format_id, path); 2953 if (err) 2954 return err; 2955 2956 inode_lock(inode); 2957 F2FS_I(inode)->i_flags |= F2FS_QUOTA_DEFAULT_FL; 2958 f2fs_set_inode_flags(inode); 2959 inode_unlock(inode); 2960 f2fs_mark_inode_dirty_sync(inode, false); 2961 2962 return 0; 2963 } 2964 2965 static int __f2fs_quota_off(struct super_block *sb, int type) 2966 { 2967 struct inode *inode = sb_dqopt(sb)->files[type]; 2968 int err; 2969 2970 if (!inode || !igrab(inode)) 2971 return dquot_quota_off(sb, type); 2972 2973 err = f2fs_quota_sync(sb, type); 2974 if (err) 2975 goto out_put; 2976 2977 err = dquot_quota_off(sb, type); 2978 if (err || f2fs_sb_has_quota_ino(F2FS_SB(sb))) 2979 goto out_put; 2980 2981 inode_lock(inode); 2982 F2FS_I(inode)->i_flags &= ~F2FS_QUOTA_DEFAULT_FL; 2983 f2fs_set_inode_flags(inode); 2984 inode_unlock(inode); 2985 f2fs_mark_inode_dirty_sync(inode, false); 2986 out_put: 2987 iput(inode); 2988 return err; 2989 } 2990 2991 static int f2fs_quota_off(struct super_block *sb, int type) 2992 { 2993 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2994 int err; 2995 2996 err = __f2fs_quota_off(sb, type); 2997 2998 /* 2999 * quotactl can shutdown journalled quota, result in inconsistence 3000 * between quota record and fs data by following updates, tag the 3001 * flag to let fsck be aware of it. 3002 */ 3003 if (is_journalled_quota(sbi)) 3004 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 3005 return err; 3006 } 3007 3008 void f2fs_quota_off_umount(struct super_block *sb) 3009 { 3010 int type; 3011 int err; 3012 3013 for (type = 0; type < MAXQUOTAS; type++) { 3014 err = __f2fs_quota_off(sb, type); 3015 if (err) { 3016 int ret = dquot_quota_off(sb, type); 3017 3018 f2fs_err(F2FS_SB(sb), "Fail to turn off disk quota (type: %d, err: %d, ret:%d), Please run fsck to fix it.", 3019 type, err, ret); 3020 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 3021 } 3022 } 3023 /* 3024 * In case of checkpoint=disable, we must flush quota blocks. 3025 * This can cause NULL exception for node_inode in end_io, since 3026 * put_super already dropped it. 3027 */ 3028 sync_filesystem(sb); 3029 } 3030 3031 static void f2fs_truncate_quota_inode_pages(struct super_block *sb) 3032 { 3033 struct quota_info *dqopt = sb_dqopt(sb); 3034 int type; 3035 3036 for (type = 0; type < MAXQUOTAS; type++) { 3037 if (!dqopt->files[type]) 3038 continue; 3039 f2fs_inode_synced(dqopt->files[type]); 3040 } 3041 } 3042 3043 static int f2fs_dquot_commit(struct dquot *dquot) 3044 { 3045 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb); 3046 int ret; 3047 3048 f2fs_down_read_nested(&sbi->quota_sem, SINGLE_DEPTH_NESTING); 3049 ret = dquot_commit(dquot); 3050 if (ret < 0) 3051 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 3052 f2fs_up_read(&sbi->quota_sem); 3053 return ret; 3054 } 3055 3056 static int f2fs_dquot_acquire(struct dquot *dquot) 3057 { 3058 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb); 3059 int ret; 3060 3061 f2fs_down_read(&sbi->quota_sem); 3062 ret = dquot_acquire(dquot); 3063 if (ret < 0) 3064 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 3065 f2fs_up_read(&sbi->quota_sem); 3066 return ret; 3067 } 3068 3069 static int f2fs_dquot_release(struct dquot *dquot) 3070 { 3071 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb); 3072 int ret = dquot_release(dquot); 3073 3074 if (ret < 0) 3075 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 3076 return ret; 3077 } 3078 3079 static int f2fs_dquot_mark_dquot_dirty(struct dquot *dquot) 3080 { 3081 struct super_block *sb = dquot->dq_sb; 3082 struct f2fs_sb_info *sbi = F2FS_SB(sb); 3083 int ret = dquot_mark_dquot_dirty(dquot); 3084 3085 /* if we are using journalled quota */ 3086 if (is_journalled_quota(sbi)) 3087 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH); 3088 3089 return ret; 3090 } 3091 3092 static int f2fs_dquot_commit_info(struct super_block *sb, int type) 3093 { 3094 struct f2fs_sb_info *sbi = F2FS_SB(sb); 3095 int ret = dquot_commit_info(sb, type); 3096 3097 if (ret < 0) 3098 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 3099 return ret; 3100 } 3101 3102 static int f2fs_get_projid(struct inode *inode, kprojid_t *projid) 3103 { 3104 *projid = F2FS_I(inode)->i_projid; 3105 return 0; 3106 } 3107 3108 static const struct dquot_operations f2fs_quota_operations = { 3109 .get_reserved_space = f2fs_get_reserved_space, 3110 .write_dquot = f2fs_dquot_commit, 3111 .acquire_dquot = f2fs_dquot_acquire, 3112 .release_dquot = f2fs_dquot_release, 3113 .mark_dirty = f2fs_dquot_mark_dquot_dirty, 3114 .write_info = f2fs_dquot_commit_info, 3115 .alloc_dquot = dquot_alloc, 3116 .destroy_dquot = dquot_destroy, 3117 .get_projid = f2fs_get_projid, 3118 .get_next_id = dquot_get_next_id, 3119 }; 3120 3121 static const struct quotactl_ops f2fs_quotactl_ops = { 3122 .quota_on = f2fs_quota_on, 3123 .quota_off = f2fs_quota_off, 3124 .quota_sync = f2fs_quota_sync, 3125 .get_state = dquot_get_state, 3126 .set_info = dquot_set_dqinfo, 3127 .get_dqblk = dquot_get_dqblk, 3128 .set_dqblk = dquot_set_dqblk, 3129 .get_nextdqblk = dquot_get_next_dqblk, 3130 }; 3131 #else 3132 int f2fs_dquot_initialize(struct inode *inode) 3133 { 3134 return 0; 3135 } 3136 3137 int f2fs_quota_sync(struct super_block *sb, int type) 3138 { 3139 return 0; 3140 } 3141 3142 void f2fs_quota_off_umount(struct super_block *sb) 3143 { 3144 } 3145 #endif 3146 3147 static const struct super_operations f2fs_sops = { 3148 .alloc_inode = f2fs_alloc_inode, 3149 .free_inode = f2fs_free_inode, 3150 .drop_inode = f2fs_drop_inode, 3151 .write_inode = f2fs_write_inode, 3152 .dirty_inode = f2fs_dirty_inode, 3153 .show_options = f2fs_show_options, 3154 #ifdef CONFIG_QUOTA 3155 .quota_read = f2fs_quota_read, 3156 .quota_write = f2fs_quota_write, 3157 .get_dquots = f2fs_get_dquots, 3158 #endif 3159 .evict_inode = f2fs_evict_inode, 3160 .put_super = f2fs_put_super, 3161 .sync_fs = f2fs_sync_fs, 3162 .freeze_fs = f2fs_freeze, 3163 .unfreeze_fs = f2fs_unfreeze, 3164 .statfs = f2fs_statfs, 3165 .remount_fs = f2fs_remount, 3166 .shutdown = f2fs_shutdown, 3167 }; 3168 3169 #ifdef CONFIG_FS_ENCRYPTION 3170 static int f2fs_get_context(struct inode *inode, void *ctx, size_t len) 3171 { 3172 return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION, 3173 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, 3174 ctx, len, NULL); 3175 } 3176 3177 static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len, 3178 void *fs_data) 3179 { 3180 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 3181 3182 /* 3183 * Encrypting the root directory is not allowed because fsck 3184 * expects lost+found directory to exist and remain unencrypted 3185 * if LOST_FOUND feature is enabled. 3186 * 3187 */ 3188 if (f2fs_sb_has_lost_found(sbi) && 3189 inode->i_ino == F2FS_ROOT_INO(sbi)) 3190 return -EPERM; 3191 3192 return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION, 3193 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, 3194 ctx, len, fs_data, XATTR_CREATE); 3195 } 3196 3197 static const union fscrypt_policy *f2fs_get_dummy_policy(struct super_block *sb) 3198 { 3199 return F2FS_OPTION(F2FS_SB(sb)).dummy_enc_policy.policy; 3200 } 3201 3202 static bool f2fs_has_stable_inodes(struct super_block *sb) 3203 { 3204 return true; 3205 } 3206 3207 static struct block_device **f2fs_get_devices(struct super_block *sb, 3208 unsigned int *num_devs) 3209 { 3210 struct f2fs_sb_info *sbi = F2FS_SB(sb); 3211 struct block_device **devs; 3212 int i; 3213 3214 if (!f2fs_is_multi_device(sbi)) 3215 return NULL; 3216 3217 devs = kmalloc_array(sbi->s_ndevs, sizeof(*devs), GFP_KERNEL); 3218 if (!devs) 3219 return ERR_PTR(-ENOMEM); 3220 3221 for (i = 0; i < sbi->s_ndevs; i++) 3222 devs[i] = FDEV(i).bdev; 3223 *num_devs = sbi->s_ndevs; 3224 return devs; 3225 } 3226 3227 static const struct fscrypt_operations f2fs_cryptops = { 3228 .needs_bounce_pages = 1, 3229 .has_32bit_inodes = 1, 3230 .supports_subblock_data_units = 1, 3231 .legacy_key_prefix = "f2fs:", 3232 .get_context = f2fs_get_context, 3233 .set_context = f2fs_set_context, 3234 .get_dummy_policy = f2fs_get_dummy_policy, 3235 .empty_dir = f2fs_empty_dir, 3236 .has_stable_inodes = f2fs_has_stable_inodes, 3237 .get_devices = f2fs_get_devices, 3238 }; 3239 #endif 3240 3241 static struct inode *f2fs_nfs_get_inode(struct super_block *sb, 3242 u64 ino, u32 generation) 3243 { 3244 struct f2fs_sb_info *sbi = F2FS_SB(sb); 3245 struct inode *inode; 3246 3247 if (f2fs_check_nid_range(sbi, ino)) 3248 return ERR_PTR(-ESTALE); 3249 3250 /* 3251 * f2fs_iget isn't quite right if the inode is currently unallocated! 3252 * However f2fs_iget currently does appropriate checks to handle stale 3253 * inodes so everything is OK. 3254 */ 3255 inode = f2fs_iget(sb, ino); 3256 if (IS_ERR(inode)) 3257 return ERR_CAST(inode); 3258 if (unlikely(generation && inode->i_generation != generation)) { 3259 /* we didn't find the right inode.. */ 3260 iput(inode); 3261 return ERR_PTR(-ESTALE); 3262 } 3263 return inode; 3264 } 3265 3266 static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid, 3267 int fh_len, int fh_type) 3268 { 3269 return generic_fh_to_dentry(sb, fid, fh_len, fh_type, 3270 f2fs_nfs_get_inode); 3271 } 3272 3273 static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid, 3274 int fh_len, int fh_type) 3275 { 3276 return generic_fh_to_parent(sb, fid, fh_len, fh_type, 3277 f2fs_nfs_get_inode); 3278 } 3279 3280 static const struct export_operations f2fs_export_ops = { 3281 .encode_fh = generic_encode_ino32_fh, 3282 .fh_to_dentry = f2fs_fh_to_dentry, 3283 .fh_to_parent = f2fs_fh_to_parent, 3284 .get_parent = f2fs_get_parent, 3285 }; 3286 3287 loff_t max_file_blocks(struct inode *inode) 3288 { 3289 loff_t result = 0; 3290 loff_t leaf_count; 3291 3292 /* 3293 * note: previously, result is equal to (DEF_ADDRS_PER_INODE - 3294 * DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more 3295 * space in inode.i_addr, it will be more safe to reassign 3296 * result as zero. 3297 */ 3298 3299 if (inode && f2fs_compressed_file(inode)) 3300 leaf_count = ADDRS_PER_BLOCK(inode); 3301 else 3302 leaf_count = DEF_ADDRS_PER_BLOCK; 3303 3304 /* two direct node blocks */ 3305 result += (leaf_count * 2); 3306 3307 /* two indirect node blocks */ 3308 leaf_count *= NIDS_PER_BLOCK; 3309 result += (leaf_count * 2); 3310 3311 /* one double indirect node block */ 3312 leaf_count *= NIDS_PER_BLOCK; 3313 result += leaf_count; 3314 3315 /* 3316 * For compatibility with FSCRYPT_POLICY_FLAG_IV_INO_LBLK_{64,32} with 3317 * a 4K crypto data unit, we must restrict the max filesize to what can 3318 * fit within U32_MAX + 1 data units. 3319 */ 3320 3321 result = min(result, (((loff_t)U32_MAX + 1) * 4096) >> F2FS_BLKSIZE_BITS); 3322 3323 return result; 3324 } 3325 3326 static int __f2fs_commit_super(struct buffer_head *bh, 3327 struct f2fs_super_block *super) 3328 { 3329 lock_buffer(bh); 3330 if (super) 3331 memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super)); 3332 set_buffer_dirty(bh); 3333 unlock_buffer(bh); 3334 3335 /* it's rare case, we can do fua all the time */ 3336 return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA); 3337 } 3338 3339 static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi, 3340 struct buffer_head *bh) 3341 { 3342 struct f2fs_super_block *raw_super = (struct f2fs_super_block *) 3343 (bh->b_data + F2FS_SUPER_OFFSET); 3344 struct super_block *sb = sbi->sb; 3345 u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr); 3346 u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr); 3347 u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr); 3348 u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr); 3349 u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr); 3350 u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr); 3351 u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt); 3352 u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit); 3353 u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat); 3354 u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa); 3355 u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main); 3356 u32 segment_count = le32_to_cpu(raw_super->segment_count); 3357 u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); 3358 u64 main_end_blkaddr = main_blkaddr + 3359 (segment_count_main << log_blocks_per_seg); 3360 u64 seg_end_blkaddr = segment0_blkaddr + 3361 (segment_count << log_blocks_per_seg); 3362 3363 if (segment0_blkaddr != cp_blkaddr) { 3364 f2fs_info(sbi, "Mismatch start address, segment0(%u) cp_blkaddr(%u)", 3365 segment0_blkaddr, cp_blkaddr); 3366 return true; 3367 } 3368 3369 if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) != 3370 sit_blkaddr) { 3371 f2fs_info(sbi, "Wrong CP boundary, start(%u) end(%u) blocks(%u)", 3372 cp_blkaddr, sit_blkaddr, 3373 segment_count_ckpt << log_blocks_per_seg); 3374 return true; 3375 } 3376 3377 if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) != 3378 nat_blkaddr) { 3379 f2fs_info(sbi, "Wrong SIT boundary, start(%u) end(%u) blocks(%u)", 3380 sit_blkaddr, nat_blkaddr, 3381 segment_count_sit << log_blocks_per_seg); 3382 return true; 3383 } 3384 3385 if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) != 3386 ssa_blkaddr) { 3387 f2fs_info(sbi, "Wrong NAT boundary, start(%u) end(%u) blocks(%u)", 3388 nat_blkaddr, ssa_blkaddr, 3389 segment_count_nat << log_blocks_per_seg); 3390 return true; 3391 } 3392 3393 if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) != 3394 main_blkaddr) { 3395 f2fs_info(sbi, "Wrong SSA boundary, start(%u) end(%u) blocks(%u)", 3396 ssa_blkaddr, main_blkaddr, 3397 segment_count_ssa << log_blocks_per_seg); 3398 return true; 3399 } 3400 3401 if (main_end_blkaddr > seg_end_blkaddr) { 3402 f2fs_info(sbi, "Wrong MAIN_AREA boundary, start(%u) end(%llu) block(%u)", 3403 main_blkaddr, seg_end_blkaddr, 3404 segment_count_main << log_blocks_per_seg); 3405 return true; 3406 } else if (main_end_blkaddr < seg_end_blkaddr) { 3407 int err = 0; 3408 char *res; 3409 3410 /* fix in-memory information all the time */ 3411 raw_super->segment_count = cpu_to_le32((main_end_blkaddr - 3412 segment0_blkaddr) >> log_blocks_per_seg); 3413 3414 if (f2fs_readonly(sb) || f2fs_hw_is_readonly(sbi)) { 3415 set_sbi_flag(sbi, SBI_NEED_SB_WRITE); 3416 res = "internally"; 3417 } else { 3418 err = __f2fs_commit_super(bh, NULL); 3419 res = err ? "failed" : "done"; 3420 } 3421 f2fs_info(sbi, "Fix alignment : %s, start(%u) end(%llu) block(%u)", 3422 res, main_blkaddr, seg_end_blkaddr, 3423 segment_count_main << log_blocks_per_seg); 3424 if (err) 3425 return true; 3426 } 3427 return false; 3428 } 3429 3430 static int sanity_check_raw_super(struct f2fs_sb_info *sbi, 3431 struct buffer_head *bh) 3432 { 3433 block_t segment_count, segs_per_sec, secs_per_zone, segment_count_main; 3434 block_t total_sections, blocks_per_seg; 3435 struct f2fs_super_block *raw_super = (struct f2fs_super_block *) 3436 (bh->b_data + F2FS_SUPER_OFFSET); 3437 size_t crc_offset = 0; 3438 __u32 crc = 0; 3439 3440 if (le32_to_cpu(raw_super->magic) != F2FS_SUPER_MAGIC) { 3441 f2fs_info(sbi, "Magic Mismatch, valid(0x%x) - read(0x%x)", 3442 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic)); 3443 return -EINVAL; 3444 } 3445 3446 /* Check checksum_offset and crc in superblock */ 3447 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_SB_CHKSUM)) { 3448 crc_offset = le32_to_cpu(raw_super->checksum_offset); 3449 if (crc_offset != 3450 offsetof(struct f2fs_super_block, crc)) { 3451 f2fs_info(sbi, "Invalid SB checksum offset: %zu", 3452 crc_offset); 3453 return -EFSCORRUPTED; 3454 } 3455 crc = le32_to_cpu(raw_super->crc); 3456 if (!f2fs_crc_valid(sbi, crc, raw_super, crc_offset)) { 3457 f2fs_info(sbi, "Invalid SB checksum value: %u", crc); 3458 return -EFSCORRUPTED; 3459 } 3460 } 3461 3462 /* only support block_size equals to PAGE_SIZE */ 3463 if (le32_to_cpu(raw_super->log_blocksize) != F2FS_BLKSIZE_BITS) { 3464 f2fs_info(sbi, "Invalid log_blocksize (%u), supports only %u", 3465 le32_to_cpu(raw_super->log_blocksize), 3466 F2FS_BLKSIZE_BITS); 3467 return -EFSCORRUPTED; 3468 } 3469 3470 /* check log blocks per segment */ 3471 if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) { 3472 f2fs_info(sbi, "Invalid log blocks per segment (%u)", 3473 le32_to_cpu(raw_super->log_blocks_per_seg)); 3474 return -EFSCORRUPTED; 3475 } 3476 3477 /* Currently, support 512/1024/2048/4096/16K bytes sector size */ 3478 if (le32_to_cpu(raw_super->log_sectorsize) > 3479 F2FS_MAX_LOG_SECTOR_SIZE || 3480 le32_to_cpu(raw_super->log_sectorsize) < 3481 F2FS_MIN_LOG_SECTOR_SIZE) { 3482 f2fs_info(sbi, "Invalid log sectorsize (%u)", 3483 le32_to_cpu(raw_super->log_sectorsize)); 3484 return -EFSCORRUPTED; 3485 } 3486 if (le32_to_cpu(raw_super->log_sectors_per_block) + 3487 le32_to_cpu(raw_super->log_sectorsize) != 3488 F2FS_MAX_LOG_SECTOR_SIZE) { 3489 f2fs_info(sbi, "Invalid log sectors per block(%u) log sectorsize(%u)", 3490 le32_to_cpu(raw_super->log_sectors_per_block), 3491 le32_to_cpu(raw_super->log_sectorsize)); 3492 return -EFSCORRUPTED; 3493 } 3494 3495 segment_count = le32_to_cpu(raw_super->segment_count); 3496 segment_count_main = le32_to_cpu(raw_super->segment_count_main); 3497 segs_per_sec = le32_to_cpu(raw_super->segs_per_sec); 3498 secs_per_zone = le32_to_cpu(raw_super->secs_per_zone); 3499 total_sections = le32_to_cpu(raw_super->section_count); 3500 3501 /* blocks_per_seg should be 512, given the above check */ 3502 blocks_per_seg = BIT(le32_to_cpu(raw_super->log_blocks_per_seg)); 3503 3504 if (segment_count > F2FS_MAX_SEGMENT || 3505 segment_count < F2FS_MIN_SEGMENTS) { 3506 f2fs_info(sbi, "Invalid segment count (%u)", segment_count); 3507 return -EFSCORRUPTED; 3508 } 3509 3510 if (total_sections > segment_count_main || total_sections < 1 || 3511 segs_per_sec > segment_count || !segs_per_sec) { 3512 f2fs_info(sbi, "Invalid segment/section count (%u, %u x %u)", 3513 segment_count, total_sections, segs_per_sec); 3514 return -EFSCORRUPTED; 3515 } 3516 3517 if (segment_count_main != total_sections * segs_per_sec) { 3518 f2fs_info(sbi, "Invalid segment/section count (%u != %u * %u)", 3519 segment_count_main, total_sections, segs_per_sec); 3520 return -EFSCORRUPTED; 3521 } 3522 3523 if ((segment_count / segs_per_sec) < total_sections) { 3524 f2fs_info(sbi, "Small segment_count (%u < %u * %u)", 3525 segment_count, segs_per_sec, total_sections); 3526 return -EFSCORRUPTED; 3527 } 3528 3529 if (segment_count > (le64_to_cpu(raw_super->block_count) >> 9)) { 3530 f2fs_info(sbi, "Wrong segment_count / block_count (%u > %llu)", 3531 segment_count, le64_to_cpu(raw_super->block_count)); 3532 return -EFSCORRUPTED; 3533 } 3534 3535 if (RDEV(0).path[0]) { 3536 block_t dev_seg_count = le32_to_cpu(RDEV(0).total_segments); 3537 int i = 1; 3538 3539 while (i < MAX_DEVICES && RDEV(i).path[0]) { 3540 dev_seg_count += le32_to_cpu(RDEV(i).total_segments); 3541 i++; 3542 } 3543 if (segment_count != dev_seg_count) { 3544 f2fs_info(sbi, "Segment count (%u) mismatch with total segments from devices (%u)", 3545 segment_count, dev_seg_count); 3546 return -EFSCORRUPTED; 3547 } 3548 } else { 3549 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_BLKZONED) && 3550 !bdev_is_zoned(sbi->sb->s_bdev)) { 3551 f2fs_info(sbi, "Zoned block device path is missing"); 3552 return -EFSCORRUPTED; 3553 } 3554 } 3555 3556 if (secs_per_zone > total_sections || !secs_per_zone) { 3557 f2fs_info(sbi, "Wrong secs_per_zone / total_sections (%u, %u)", 3558 secs_per_zone, total_sections); 3559 return -EFSCORRUPTED; 3560 } 3561 if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION || 3562 raw_super->hot_ext_count > F2FS_MAX_EXTENSION || 3563 (le32_to_cpu(raw_super->extension_count) + 3564 raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) { 3565 f2fs_info(sbi, "Corrupted extension count (%u + %u > %u)", 3566 le32_to_cpu(raw_super->extension_count), 3567 raw_super->hot_ext_count, 3568 F2FS_MAX_EXTENSION); 3569 return -EFSCORRUPTED; 3570 } 3571 3572 if (le32_to_cpu(raw_super->cp_payload) >= 3573 (blocks_per_seg - F2FS_CP_PACKS - 3574 NR_CURSEG_PERSIST_TYPE)) { 3575 f2fs_info(sbi, "Insane cp_payload (%u >= %u)", 3576 le32_to_cpu(raw_super->cp_payload), 3577 blocks_per_seg - F2FS_CP_PACKS - 3578 NR_CURSEG_PERSIST_TYPE); 3579 return -EFSCORRUPTED; 3580 } 3581 3582 /* check reserved ino info */ 3583 if (le32_to_cpu(raw_super->node_ino) != 1 || 3584 le32_to_cpu(raw_super->meta_ino) != 2 || 3585 le32_to_cpu(raw_super->root_ino) != 3) { 3586 f2fs_info(sbi, "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)", 3587 le32_to_cpu(raw_super->node_ino), 3588 le32_to_cpu(raw_super->meta_ino), 3589 le32_to_cpu(raw_super->root_ino)); 3590 return -EFSCORRUPTED; 3591 } 3592 3593 /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */ 3594 if (sanity_check_area_boundary(sbi, bh)) 3595 return -EFSCORRUPTED; 3596 3597 return 0; 3598 } 3599 3600 int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi) 3601 { 3602 unsigned int total, fsmeta; 3603 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 3604 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 3605 unsigned int ovp_segments, reserved_segments; 3606 unsigned int main_segs, blocks_per_seg; 3607 unsigned int sit_segs, nat_segs; 3608 unsigned int sit_bitmap_size, nat_bitmap_size; 3609 unsigned int log_blocks_per_seg; 3610 unsigned int segment_count_main; 3611 unsigned int cp_pack_start_sum, cp_payload; 3612 block_t user_block_count, valid_user_blocks; 3613 block_t avail_node_count, valid_node_count; 3614 unsigned int nat_blocks, nat_bits_bytes, nat_bits_blocks; 3615 int i, j; 3616 3617 total = le32_to_cpu(raw_super->segment_count); 3618 fsmeta = le32_to_cpu(raw_super->segment_count_ckpt); 3619 sit_segs = le32_to_cpu(raw_super->segment_count_sit); 3620 fsmeta += sit_segs; 3621 nat_segs = le32_to_cpu(raw_super->segment_count_nat); 3622 fsmeta += nat_segs; 3623 fsmeta += le32_to_cpu(ckpt->rsvd_segment_count); 3624 fsmeta += le32_to_cpu(raw_super->segment_count_ssa); 3625 3626 if (unlikely(fsmeta >= total)) 3627 return 1; 3628 3629 ovp_segments = le32_to_cpu(ckpt->overprov_segment_count); 3630 reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count); 3631 3632 if (!f2fs_sb_has_readonly(sbi) && 3633 unlikely(fsmeta < F2FS_MIN_META_SEGMENTS || 3634 ovp_segments == 0 || reserved_segments == 0)) { 3635 f2fs_err(sbi, "Wrong layout: check mkfs.f2fs version"); 3636 return 1; 3637 } 3638 user_block_count = le64_to_cpu(ckpt->user_block_count); 3639 segment_count_main = le32_to_cpu(raw_super->segment_count_main) + 3640 (f2fs_sb_has_readonly(sbi) ? 1 : 0); 3641 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); 3642 if (!user_block_count || user_block_count >= 3643 segment_count_main << log_blocks_per_seg) { 3644 f2fs_err(sbi, "Wrong user_block_count: %u", 3645 user_block_count); 3646 return 1; 3647 } 3648 3649 valid_user_blocks = le64_to_cpu(ckpt->valid_block_count); 3650 if (valid_user_blocks > user_block_count) { 3651 f2fs_err(sbi, "Wrong valid_user_blocks: %u, user_block_count: %u", 3652 valid_user_blocks, user_block_count); 3653 return 1; 3654 } 3655 3656 valid_node_count = le32_to_cpu(ckpt->valid_node_count); 3657 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM; 3658 if (valid_node_count > avail_node_count) { 3659 f2fs_err(sbi, "Wrong valid_node_count: %u, avail_node_count: %u", 3660 valid_node_count, avail_node_count); 3661 return 1; 3662 } 3663 3664 main_segs = le32_to_cpu(raw_super->segment_count_main); 3665 blocks_per_seg = BLKS_PER_SEG(sbi); 3666 3667 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { 3668 if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs || 3669 le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg) 3670 return 1; 3671 3672 if (f2fs_sb_has_readonly(sbi)) 3673 goto check_data; 3674 3675 for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) { 3676 if (le32_to_cpu(ckpt->cur_node_segno[i]) == 3677 le32_to_cpu(ckpt->cur_node_segno[j])) { 3678 f2fs_err(sbi, "Node segment (%u, %u) has the same segno: %u", 3679 i, j, 3680 le32_to_cpu(ckpt->cur_node_segno[i])); 3681 return 1; 3682 } 3683 } 3684 } 3685 check_data: 3686 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) { 3687 if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs || 3688 le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg) 3689 return 1; 3690 3691 if (f2fs_sb_has_readonly(sbi)) 3692 goto skip_cross; 3693 3694 for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) { 3695 if (le32_to_cpu(ckpt->cur_data_segno[i]) == 3696 le32_to_cpu(ckpt->cur_data_segno[j])) { 3697 f2fs_err(sbi, "Data segment (%u, %u) has the same segno: %u", 3698 i, j, 3699 le32_to_cpu(ckpt->cur_data_segno[i])); 3700 return 1; 3701 } 3702 } 3703 } 3704 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { 3705 for (j = 0; j < NR_CURSEG_DATA_TYPE; j++) { 3706 if (le32_to_cpu(ckpt->cur_node_segno[i]) == 3707 le32_to_cpu(ckpt->cur_data_segno[j])) { 3708 f2fs_err(sbi, "Node segment (%u) and Data segment (%u) has the same segno: %u", 3709 i, j, 3710 le32_to_cpu(ckpt->cur_node_segno[i])); 3711 return 1; 3712 } 3713 } 3714 } 3715 skip_cross: 3716 sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize); 3717 nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize); 3718 3719 if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 || 3720 nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) { 3721 f2fs_err(sbi, "Wrong bitmap size: sit: %u, nat:%u", 3722 sit_bitmap_size, nat_bitmap_size); 3723 return 1; 3724 } 3725 3726 cp_pack_start_sum = __start_sum_addr(sbi); 3727 cp_payload = __cp_payload(sbi); 3728 if (cp_pack_start_sum < cp_payload + 1 || 3729 cp_pack_start_sum > blocks_per_seg - 1 - 3730 NR_CURSEG_PERSIST_TYPE) { 3731 f2fs_err(sbi, "Wrong cp_pack_start_sum: %u", 3732 cp_pack_start_sum); 3733 return 1; 3734 } 3735 3736 if (__is_set_ckpt_flags(ckpt, CP_LARGE_NAT_BITMAP_FLAG) && 3737 le32_to_cpu(ckpt->checksum_offset) != CP_MIN_CHKSUM_OFFSET) { 3738 f2fs_warn(sbi, "using deprecated layout of large_nat_bitmap, " 3739 "please run fsck v1.13.0 or higher to repair, chksum_offset: %u, " 3740 "fixed with patch: \"f2fs-tools: relocate chksum_offset for large_nat_bitmap feature\"", 3741 le32_to_cpu(ckpt->checksum_offset)); 3742 return 1; 3743 } 3744 3745 nat_blocks = nat_segs << log_blocks_per_seg; 3746 nat_bits_bytes = nat_blocks / BITS_PER_BYTE; 3747 nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8); 3748 if (__is_set_ckpt_flags(ckpt, CP_NAT_BITS_FLAG) && 3749 (cp_payload + F2FS_CP_PACKS + 3750 NR_CURSEG_PERSIST_TYPE + nat_bits_blocks >= blocks_per_seg)) { 3751 f2fs_warn(sbi, "Insane cp_payload: %u, nat_bits_blocks: %u)", 3752 cp_payload, nat_bits_blocks); 3753 return 1; 3754 } 3755 3756 if (unlikely(f2fs_cp_error(sbi))) { 3757 f2fs_err(sbi, "A bug case: need to run fsck"); 3758 return 1; 3759 } 3760 return 0; 3761 } 3762 3763 static void init_sb_info(struct f2fs_sb_info *sbi) 3764 { 3765 struct f2fs_super_block *raw_super = sbi->raw_super; 3766 int i; 3767 3768 sbi->log_sectors_per_block = 3769 le32_to_cpu(raw_super->log_sectors_per_block); 3770 sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize); 3771 sbi->blocksize = BIT(sbi->log_blocksize); 3772 sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); 3773 sbi->blocks_per_seg = BIT(sbi->log_blocks_per_seg); 3774 sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec); 3775 sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone); 3776 sbi->total_sections = le32_to_cpu(raw_super->section_count); 3777 sbi->total_node_count = SEGS_TO_BLKS(sbi, 3778 ((le32_to_cpu(raw_super->segment_count_nat) / 2) * 3779 NAT_ENTRY_PER_BLOCK)); 3780 F2FS_ROOT_INO(sbi) = le32_to_cpu(raw_super->root_ino); 3781 F2FS_NODE_INO(sbi) = le32_to_cpu(raw_super->node_ino); 3782 F2FS_META_INO(sbi) = le32_to_cpu(raw_super->meta_ino); 3783 sbi->cur_victim_sec = NULL_SECNO; 3784 sbi->gc_mode = GC_NORMAL; 3785 sbi->next_victim_seg[BG_GC] = NULL_SEGNO; 3786 sbi->next_victim_seg[FG_GC] = NULL_SEGNO; 3787 sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH; 3788 sbi->migration_granularity = SEGS_PER_SEC(sbi); 3789 sbi->seq_file_ra_mul = MIN_RA_MUL; 3790 sbi->max_fragment_chunk = DEF_FRAGMENT_SIZE; 3791 sbi->max_fragment_hole = DEF_FRAGMENT_SIZE; 3792 spin_lock_init(&sbi->gc_remaining_trials_lock); 3793 atomic64_set(&sbi->current_atomic_write, 0); 3794 3795 sbi->dir_level = DEF_DIR_LEVEL; 3796 sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL; 3797 sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL; 3798 sbi->interval_time[DISCARD_TIME] = DEF_IDLE_INTERVAL; 3799 sbi->interval_time[GC_TIME] = DEF_IDLE_INTERVAL; 3800 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_INTERVAL; 3801 sbi->interval_time[UMOUNT_DISCARD_TIMEOUT] = 3802 DEF_UMOUNT_DISCARD_TIMEOUT; 3803 clear_sbi_flag(sbi, SBI_NEED_FSCK); 3804 3805 for (i = 0; i < NR_COUNT_TYPE; i++) 3806 atomic_set(&sbi->nr_pages[i], 0); 3807 3808 for (i = 0; i < META; i++) 3809 atomic_set(&sbi->wb_sync_req[i], 0); 3810 3811 INIT_LIST_HEAD(&sbi->s_list); 3812 mutex_init(&sbi->umount_mutex); 3813 init_f2fs_rwsem(&sbi->io_order_lock); 3814 spin_lock_init(&sbi->cp_lock); 3815 3816 sbi->dirty_device = 0; 3817 spin_lock_init(&sbi->dev_lock); 3818 3819 init_f2fs_rwsem(&sbi->sb_lock); 3820 init_f2fs_rwsem(&sbi->pin_sem); 3821 } 3822 3823 static int init_percpu_info(struct f2fs_sb_info *sbi) 3824 { 3825 int err; 3826 3827 err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL); 3828 if (err) 3829 return err; 3830 3831 err = percpu_counter_init(&sbi->rf_node_block_count, 0, GFP_KERNEL); 3832 if (err) 3833 goto err_valid_block; 3834 3835 err = percpu_counter_init(&sbi->total_valid_inode_count, 0, 3836 GFP_KERNEL); 3837 if (err) 3838 goto err_node_block; 3839 return 0; 3840 3841 err_node_block: 3842 percpu_counter_destroy(&sbi->rf_node_block_count); 3843 err_valid_block: 3844 percpu_counter_destroy(&sbi->alloc_valid_block_count); 3845 return err; 3846 } 3847 3848 #ifdef CONFIG_BLK_DEV_ZONED 3849 3850 struct f2fs_report_zones_args { 3851 struct f2fs_sb_info *sbi; 3852 struct f2fs_dev_info *dev; 3853 }; 3854 3855 static int f2fs_report_zone_cb(struct blk_zone *zone, unsigned int idx, 3856 void *data) 3857 { 3858 struct f2fs_report_zones_args *rz_args = data; 3859 block_t unusable_blocks = (zone->len - zone->capacity) >> 3860 F2FS_LOG_SECTORS_PER_BLOCK; 3861 3862 if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL) 3863 return 0; 3864 3865 set_bit(idx, rz_args->dev->blkz_seq); 3866 if (!rz_args->sbi->unusable_blocks_per_sec) { 3867 rz_args->sbi->unusable_blocks_per_sec = unusable_blocks; 3868 return 0; 3869 } 3870 if (rz_args->sbi->unusable_blocks_per_sec != unusable_blocks) { 3871 f2fs_err(rz_args->sbi, "F2FS supports single zone capacity\n"); 3872 return -EINVAL; 3873 } 3874 return 0; 3875 } 3876 3877 static int init_blkz_info(struct f2fs_sb_info *sbi, int devi) 3878 { 3879 struct block_device *bdev = FDEV(devi).bdev; 3880 sector_t nr_sectors = bdev_nr_sectors(bdev); 3881 struct f2fs_report_zones_args rep_zone_arg; 3882 u64 zone_sectors; 3883 unsigned int max_open_zones; 3884 int ret; 3885 3886 if (!f2fs_sb_has_blkzoned(sbi)) 3887 return 0; 3888 3889 if (bdev_is_zoned(FDEV(devi).bdev)) { 3890 max_open_zones = bdev_max_open_zones(bdev); 3891 if (max_open_zones && (max_open_zones < sbi->max_open_zones)) 3892 sbi->max_open_zones = max_open_zones; 3893 if (sbi->max_open_zones < F2FS_OPTION(sbi).active_logs) { 3894 f2fs_err(sbi, 3895 "zoned: max open zones %u is too small, need at least %u open zones", 3896 sbi->max_open_zones, F2FS_OPTION(sbi).active_logs); 3897 return -EINVAL; 3898 } 3899 } 3900 3901 zone_sectors = bdev_zone_sectors(bdev); 3902 if (sbi->blocks_per_blkz && sbi->blocks_per_blkz != 3903 SECTOR_TO_BLOCK(zone_sectors)) 3904 return -EINVAL; 3905 sbi->blocks_per_blkz = SECTOR_TO_BLOCK(zone_sectors); 3906 FDEV(devi).nr_blkz = div_u64(SECTOR_TO_BLOCK(nr_sectors), 3907 sbi->blocks_per_blkz); 3908 if (nr_sectors & (zone_sectors - 1)) 3909 FDEV(devi).nr_blkz++; 3910 3911 FDEV(devi).blkz_seq = f2fs_kvzalloc(sbi, 3912 BITS_TO_LONGS(FDEV(devi).nr_blkz) 3913 * sizeof(unsigned long), 3914 GFP_KERNEL); 3915 if (!FDEV(devi).blkz_seq) 3916 return -ENOMEM; 3917 3918 rep_zone_arg.sbi = sbi; 3919 rep_zone_arg.dev = &FDEV(devi); 3920 3921 ret = blkdev_report_zones(bdev, 0, BLK_ALL_ZONES, f2fs_report_zone_cb, 3922 &rep_zone_arg); 3923 if (ret < 0) 3924 return ret; 3925 return 0; 3926 } 3927 #endif 3928 3929 /* 3930 * Read f2fs raw super block. 3931 * Because we have two copies of super block, so read both of them 3932 * to get the first valid one. If any one of them is broken, we pass 3933 * them recovery flag back to the caller. 3934 */ 3935 static int read_raw_super_block(struct f2fs_sb_info *sbi, 3936 struct f2fs_super_block **raw_super, 3937 int *valid_super_block, int *recovery) 3938 { 3939 struct super_block *sb = sbi->sb; 3940 int block; 3941 struct buffer_head *bh; 3942 struct f2fs_super_block *super; 3943 int err = 0; 3944 3945 super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL); 3946 if (!super) 3947 return -ENOMEM; 3948 3949 for (block = 0; block < 2; block++) { 3950 bh = sb_bread(sb, block); 3951 if (!bh) { 3952 f2fs_err(sbi, "Unable to read %dth superblock", 3953 block + 1); 3954 err = -EIO; 3955 *recovery = 1; 3956 continue; 3957 } 3958 3959 /* sanity checking of raw super */ 3960 err = sanity_check_raw_super(sbi, bh); 3961 if (err) { 3962 f2fs_err(sbi, "Can't find valid F2FS filesystem in %dth superblock", 3963 block + 1); 3964 brelse(bh); 3965 *recovery = 1; 3966 continue; 3967 } 3968 3969 if (!*raw_super) { 3970 memcpy(super, bh->b_data + F2FS_SUPER_OFFSET, 3971 sizeof(*super)); 3972 *valid_super_block = block; 3973 *raw_super = super; 3974 } 3975 brelse(bh); 3976 } 3977 3978 /* No valid superblock */ 3979 if (!*raw_super) 3980 kfree(super); 3981 else 3982 err = 0; 3983 3984 return err; 3985 } 3986 3987 int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover) 3988 { 3989 struct buffer_head *bh; 3990 __u32 crc = 0; 3991 int err; 3992 3993 if ((recover && f2fs_readonly(sbi->sb)) || 3994 f2fs_hw_is_readonly(sbi)) { 3995 set_sbi_flag(sbi, SBI_NEED_SB_WRITE); 3996 return -EROFS; 3997 } 3998 3999 /* we should update superblock crc here */ 4000 if (!recover && f2fs_sb_has_sb_chksum(sbi)) { 4001 crc = f2fs_crc32(sbi, F2FS_RAW_SUPER(sbi), 4002 offsetof(struct f2fs_super_block, crc)); 4003 F2FS_RAW_SUPER(sbi)->crc = cpu_to_le32(crc); 4004 } 4005 4006 /* write back-up superblock first */ 4007 bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1); 4008 if (!bh) 4009 return -EIO; 4010 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi)); 4011 brelse(bh); 4012 4013 /* if we are in recovery path, skip writing valid superblock */ 4014 if (recover || err) 4015 return err; 4016 4017 /* write current valid superblock */ 4018 bh = sb_bread(sbi->sb, sbi->valid_super_block); 4019 if (!bh) 4020 return -EIO; 4021 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi)); 4022 brelse(bh); 4023 return err; 4024 } 4025 4026 static void save_stop_reason(struct f2fs_sb_info *sbi, unsigned char reason) 4027 { 4028 unsigned long flags; 4029 4030 spin_lock_irqsave(&sbi->error_lock, flags); 4031 if (sbi->stop_reason[reason] < GENMASK(BITS_PER_BYTE - 1, 0)) 4032 sbi->stop_reason[reason]++; 4033 spin_unlock_irqrestore(&sbi->error_lock, flags); 4034 } 4035 4036 static void f2fs_record_stop_reason(struct f2fs_sb_info *sbi) 4037 { 4038 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 4039 unsigned long flags; 4040 int err; 4041 4042 f2fs_down_write(&sbi->sb_lock); 4043 4044 spin_lock_irqsave(&sbi->error_lock, flags); 4045 if (sbi->error_dirty) { 4046 memcpy(F2FS_RAW_SUPER(sbi)->s_errors, sbi->errors, 4047 MAX_F2FS_ERRORS); 4048 sbi->error_dirty = false; 4049 } 4050 memcpy(raw_super->s_stop_reason, sbi->stop_reason, MAX_STOP_REASON); 4051 spin_unlock_irqrestore(&sbi->error_lock, flags); 4052 4053 err = f2fs_commit_super(sbi, false); 4054 4055 f2fs_up_write(&sbi->sb_lock); 4056 if (err) 4057 f2fs_err_ratelimited(sbi, 4058 "f2fs_commit_super fails to record stop_reason, err:%d", 4059 err); 4060 } 4061 4062 void f2fs_save_errors(struct f2fs_sb_info *sbi, unsigned char flag) 4063 { 4064 unsigned long flags; 4065 4066 spin_lock_irqsave(&sbi->error_lock, flags); 4067 if (!test_bit(flag, (unsigned long *)sbi->errors)) { 4068 set_bit(flag, (unsigned long *)sbi->errors); 4069 sbi->error_dirty = true; 4070 } 4071 spin_unlock_irqrestore(&sbi->error_lock, flags); 4072 } 4073 4074 static bool f2fs_update_errors(struct f2fs_sb_info *sbi) 4075 { 4076 unsigned long flags; 4077 bool need_update = false; 4078 4079 spin_lock_irqsave(&sbi->error_lock, flags); 4080 if (sbi->error_dirty) { 4081 memcpy(F2FS_RAW_SUPER(sbi)->s_errors, sbi->errors, 4082 MAX_F2FS_ERRORS); 4083 sbi->error_dirty = false; 4084 need_update = true; 4085 } 4086 spin_unlock_irqrestore(&sbi->error_lock, flags); 4087 4088 return need_update; 4089 } 4090 4091 static void f2fs_record_errors(struct f2fs_sb_info *sbi, unsigned char error) 4092 { 4093 int err; 4094 4095 f2fs_down_write(&sbi->sb_lock); 4096 4097 if (!f2fs_update_errors(sbi)) 4098 goto out_unlock; 4099 4100 err = f2fs_commit_super(sbi, false); 4101 if (err) 4102 f2fs_err_ratelimited(sbi, 4103 "f2fs_commit_super fails to record errors:%u, err:%d", 4104 error, err); 4105 out_unlock: 4106 f2fs_up_write(&sbi->sb_lock); 4107 } 4108 4109 void f2fs_handle_error(struct f2fs_sb_info *sbi, unsigned char error) 4110 { 4111 f2fs_save_errors(sbi, error); 4112 f2fs_record_errors(sbi, error); 4113 } 4114 4115 void f2fs_handle_error_async(struct f2fs_sb_info *sbi, unsigned char error) 4116 { 4117 f2fs_save_errors(sbi, error); 4118 4119 if (!sbi->error_dirty) 4120 return; 4121 if (!test_bit(error, (unsigned long *)sbi->errors)) 4122 return; 4123 schedule_work(&sbi->s_error_work); 4124 } 4125 4126 static bool system_going_down(void) 4127 { 4128 return system_state == SYSTEM_HALT || system_state == SYSTEM_POWER_OFF 4129 || system_state == SYSTEM_RESTART; 4130 } 4131 4132 void f2fs_handle_critical_error(struct f2fs_sb_info *sbi, unsigned char reason, 4133 bool irq_context) 4134 { 4135 struct super_block *sb = sbi->sb; 4136 bool shutdown = reason == STOP_CP_REASON_SHUTDOWN; 4137 bool continue_fs = !shutdown && 4138 F2FS_OPTION(sbi).errors == MOUNT_ERRORS_CONTINUE; 4139 4140 set_ckpt_flags(sbi, CP_ERROR_FLAG); 4141 4142 if (!f2fs_hw_is_readonly(sbi)) { 4143 save_stop_reason(sbi, reason); 4144 4145 if (irq_context && !shutdown) 4146 schedule_work(&sbi->s_error_work); 4147 else 4148 f2fs_record_stop_reason(sbi); 4149 } 4150 4151 /* 4152 * We force ERRORS_RO behavior when system is rebooting. Otherwise we 4153 * could panic during 'reboot -f' as the underlying device got already 4154 * disabled. 4155 */ 4156 if (F2FS_OPTION(sbi).errors == MOUNT_ERRORS_PANIC && 4157 !shutdown && !system_going_down() && 4158 !is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN)) 4159 panic("F2FS-fs (device %s): panic forced after error\n", 4160 sb->s_id); 4161 4162 if (shutdown) 4163 set_sbi_flag(sbi, SBI_IS_SHUTDOWN); 4164 4165 /* 4166 * Continue filesystem operators if errors=continue. Should not set 4167 * RO by shutdown, since RO bypasses thaw_super which can hang the 4168 * system. 4169 */ 4170 if (continue_fs || f2fs_readonly(sb) || shutdown) { 4171 f2fs_warn(sbi, "Stopped filesystem due to reason: %d", reason); 4172 return; 4173 } 4174 4175 f2fs_warn(sbi, "Remounting filesystem read-only"); 4176 /* 4177 * Make sure updated value of ->s_mount_flags will be visible before 4178 * ->s_flags update 4179 */ 4180 smp_wmb(); 4181 sb->s_flags |= SB_RDONLY; 4182 } 4183 4184 static void f2fs_record_error_work(struct work_struct *work) 4185 { 4186 struct f2fs_sb_info *sbi = container_of(work, 4187 struct f2fs_sb_info, s_error_work); 4188 4189 f2fs_record_stop_reason(sbi); 4190 } 4191 4192 static int f2fs_scan_devices(struct f2fs_sb_info *sbi) 4193 { 4194 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 4195 unsigned int max_devices = MAX_DEVICES; 4196 unsigned int logical_blksize; 4197 blk_mode_t mode = sb_open_mode(sbi->sb->s_flags); 4198 int i; 4199 4200 /* Initialize single device information */ 4201 if (!RDEV(0).path[0]) { 4202 if (!bdev_is_zoned(sbi->sb->s_bdev)) 4203 return 0; 4204 max_devices = 1; 4205 } 4206 4207 /* 4208 * Initialize multiple devices information, or single 4209 * zoned block device information. 4210 */ 4211 sbi->devs = f2fs_kzalloc(sbi, 4212 array_size(max_devices, 4213 sizeof(struct f2fs_dev_info)), 4214 GFP_KERNEL); 4215 if (!sbi->devs) 4216 return -ENOMEM; 4217 4218 logical_blksize = bdev_logical_block_size(sbi->sb->s_bdev); 4219 sbi->aligned_blksize = true; 4220 #ifdef CONFIG_BLK_DEV_ZONED 4221 sbi->max_open_zones = UINT_MAX; 4222 #endif 4223 4224 for (i = 0; i < max_devices; i++) { 4225 if (i == 0) 4226 FDEV(0).bdev_file = sbi->sb->s_bdev_file; 4227 else if (!RDEV(i).path[0]) 4228 break; 4229 4230 if (max_devices > 1) { 4231 /* Multi-device mount */ 4232 memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN); 4233 FDEV(i).total_segments = 4234 le32_to_cpu(RDEV(i).total_segments); 4235 if (i == 0) { 4236 FDEV(i).start_blk = 0; 4237 FDEV(i).end_blk = FDEV(i).start_blk + 4238 SEGS_TO_BLKS(sbi, 4239 FDEV(i).total_segments) - 1 + 4240 le32_to_cpu(raw_super->segment0_blkaddr); 4241 } else { 4242 FDEV(i).start_blk = FDEV(i - 1).end_blk + 1; 4243 FDEV(i).end_blk = FDEV(i).start_blk + 4244 SEGS_TO_BLKS(sbi, 4245 FDEV(i).total_segments) - 1; 4246 FDEV(i).bdev_file = bdev_file_open_by_path( 4247 FDEV(i).path, mode, sbi->sb, NULL); 4248 } 4249 } 4250 if (IS_ERR(FDEV(i).bdev_file)) 4251 return PTR_ERR(FDEV(i).bdev_file); 4252 4253 FDEV(i).bdev = file_bdev(FDEV(i).bdev_file); 4254 /* to release errored devices */ 4255 sbi->s_ndevs = i + 1; 4256 4257 if (logical_blksize != bdev_logical_block_size(FDEV(i).bdev)) 4258 sbi->aligned_blksize = false; 4259 4260 #ifdef CONFIG_BLK_DEV_ZONED 4261 if (bdev_is_zoned(FDEV(i).bdev)) { 4262 if (!f2fs_sb_has_blkzoned(sbi)) { 4263 f2fs_err(sbi, "Zoned block device feature not enabled"); 4264 return -EINVAL; 4265 } 4266 if (init_blkz_info(sbi, i)) { 4267 f2fs_err(sbi, "Failed to initialize F2FS blkzone information"); 4268 return -EINVAL; 4269 } 4270 if (max_devices == 1) 4271 break; 4272 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: Host-managed)", 4273 i, FDEV(i).path, 4274 FDEV(i).total_segments, 4275 FDEV(i).start_blk, FDEV(i).end_blk); 4276 continue; 4277 } 4278 #endif 4279 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x", 4280 i, FDEV(i).path, 4281 FDEV(i).total_segments, 4282 FDEV(i).start_blk, FDEV(i).end_blk); 4283 } 4284 return 0; 4285 } 4286 4287 static int f2fs_setup_casefold(struct f2fs_sb_info *sbi) 4288 { 4289 #if IS_ENABLED(CONFIG_UNICODE) 4290 if (f2fs_sb_has_casefold(sbi) && !sbi->sb->s_encoding) { 4291 const struct f2fs_sb_encodings *encoding_info; 4292 struct unicode_map *encoding; 4293 __u16 encoding_flags; 4294 4295 encoding_info = f2fs_sb_read_encoding(sbi->raw_super); 4296 if (!encoding_info) { 4297 f2fs_err(sbi, 4298 "Encoding requested by superblock is unknown"); 4299 return -EINVAL; 4300 } 4301 4302 encoding_flags = le16_to_cpu(sbi->raw_super->s_encoding_flags); 4303 encoding = utf8_load(encoding_info->version); 4304 if (IS_ERR(encoding)) { 4305 f2fs_err(sbi, 4306 "can't mount with superblock charset: %s-%u.%u.%u " 4307 "not supported by the kernel. flags: 0x%x.", 4308 encoding_info->name, 4309 unicode_major(encoding_info->version), 4310 unicode_minor(encoding_info->version), 4311 unicode_rev(encoding_info->version), 4312 encoding_flags); 4313 return PTR_ERR(encoding); 4314 } 4315 f2fs_info(sbi, "Using encoding defined by superblock: " 4316 "%s-%u.%u.%u with flags 0x%hx", encoding_info->name, 4317 unicode_major(encoding_info->version), 4318 unicode_minor(encoding_info->version), 4319 unicode_rev(encoding_info->version), 4320 encoding_flags); 4321 4322 sbi->sb->s_encoding = encoding; 4323 sbi->sb->s_encoding_flags = encoding_flags; 4324 } 4325 #else 4326 if (f2fs_sb_has_casefold(sbi)) { 4327 f2fs_err(sbi, "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE"); 4328 return -EINVAL; 4329 } 4330 #endif 4331 return 0; 4332 } 4333 4334 static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi) 4335 { 4336 /* adjust parameters according to the volume size */ 4337 if (MAIN_SEGS(sbi) <= SMALL_VOLUME_SEGMENTS) { 4338 if (f2fs_block_unit_discard(sbi)) 4339 SM_I(sbi)->dcc_info->discard_granularity = 4340 MIN_DISCARD_GRANULARITY; 4341 if (!f2fs_lfs_mode(sbi)) 4342 SM_I(sbi)->ipu_policy = BIT(F2FS_IPU_FORCE) | 4343 BIT(F2FS_IPU_HONOR_OPU_WRITE); 4344 } 4345 4346 sbi->readdir_ra = true; 4347 } 4348 4349 static int f2fs_fill_super(struct super_block *sb, void *data, int silent) 4350 { 4351 struct f2fs_sb_info *sbi; 4352 struct f2fs_super_block *raw_super; 4353 struct inode *root; 4354 int err; 4355 bool skip_recovery = false, need_fsck = false; 4356 char *options = NULL; 4357 int recovery, i, valid_super_block; 4358 struct curseg_info *seg_i; 4359 int retry_cnt = 1; 4360 #ifdef CONFIG_QUOTA 4361 bool quota_enabled = false; 4362 #endif 4363 4364 try_onemore: 4365 err = -EINVAL; 4366 raw_super = NULL; 4367 valid_super_block = -1; 4368 recovery = 0; 4369 4370 /* allocate memory for f2fs-specific super block info */ 4371 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL); 4372 if (!sbi) 4373 return -ENOMEM; 4374 4375 sbi->sb = sb; 4376 4377 /* initialize locks within allocated memory */ 4378 init_f2fs_rwsem(&sbi->gc_lock); 4379 mutex_init(&sbi->writepages); 4380 init_f2fs_rwsem(&sbi->cp_global_sem); 4381 init_f2fs_rwsem(&sbi->node_write); 4382 init_f2fs_rwsem(&sbi->node_change); 4383 spin_lock_init(&sbi->stat_lock); 4384 init_f2fs_rwsem(&sbi->cp_rwsem); 4385 init_f2fs_rwsem(&sbi->quota_sem); 4386 init_waitqueue_head(&sbi->cp_wait); 4387 spin_lock_init(&sbi->error_lock); 4388 4389 for (i = 0; i < NR_INODE_TYPE; i++) { 4390 INIT_LIST_HEAD(&sbi->inode_list[i]); 4391 spin_lock_init(&sbi->inode_lock[i]); 4392 } 4393 mutex_init(&sbi->flush_lock); 4394 4395 /* Load the checksum driver */ 4396 sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0); 4397 if (IS_ERR(sbi->s_chksum_driver)) { 4398 f2fs_err(sbi, "Cannot load crc32 driver."); 4399 err = PTR_ERR(sbi->s_chksum_driver); 4400 sbi->s_chksum_driver = NULL; 4401 goto free_sbi; 4402 } 4403 4404 /* set a block size */ 4405 if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) { 4406 f2fs_err(sbi, "unable to set blocksize"); 4407 goto free_sbi; 4408 } 4409 4410 err = read_raw_super_block(sbi, &raw_super, &valid_super_block, 4411 &recovery); 4412 if (err) 4413 goto free_sbi; 4414 4415 sb->s_fs_info = sbi; 4416 sbi->raw_super = raw_super; 4417 4418 INIT_WORK(&sbi->s_error_work, f2fs_record_error_work); 4419 memcpy(sbi->errors, raw_super->s_errors, MAX_F2FS_ERRORS); 4420 memcpy(sbi->stop_reason, raw_super->s_stop_reason, MAX_STOP_REASON); 4421 4422 /* precompute checksum seed for metadata */ 4423 if (f2fs_sb_has_inode_chksum(sbi)) 4424 sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid, 4425 sizeof(raw_super->uuid)); 4426 4427 default_options(sbi, false); 4428 /* parse mount options */ 4429 options = kstrdup((const char *)data, GFP_KERNEL); 4430 if (data && !options) { 4431 err = -ENOMEM; 4432 goto free_sb_buf; 4433 } 4434 4435 err = parse_options(sb, options, false); 4436 if (err) 4437 goto free_options; 4438 4439 sb->s_maxbytes = max_file_blocks(NULL) << 4440 le32_to_cpu(raw_super->log_blocksize); 4441 sb->s_max_links = F2FS_LINK_MAX; 4442 4443 err = f2fs_setup_casefold(sbi); 4444 if (err) 4445 goto free_options; 4446 4447 #ifdef CONFIG_QUOTA 4448 sb->dq_op = &f2fs_quota_operations; 4449 sb->s_qcop = &f2fs_quotactl_ops; 4450 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ; 4451 4452 if (f2fs_sb_has_quota_ino(sbi)) { 4453 for (i = 0; i < MAXQUOTAS; i++) { 4454 if (f2fs_qf_ino(sbi->sb, i)) 4455 sbi->nquota_files++; 4456 } 4457 } 4458 #endif 4459 4460 sb->s_op = &f2fs_sops; 4461 #ifdef CONFIG_FS_ENCRYPTION 4462 sb->s_cop = &f2fs_cryptops; 4463 #endif 4464 #ifdef CONFIG_FS_VERITY 4465 sb->s_vop = &f2fs_verityops; 4466 #endif 4467 sb->s_xattr = f2fs_xattr_handlers; 4468 sb->s_export_op = &f2fs_export_ops; 4469 sb->s_magic = F2FS_SUPER_MAGIC; 4470 sb->s_time_gran = 1; 4471 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) | 4472 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0); 4473 super_set_uuid(sb, (void *) raw_super->uuid, sizeof(raw_super->uuid)); 4474 super_set_sysfs_name_bdev(sb); 4475 sb->s_iflags |= SB_I_CGROUPWB; 4476 4477 /* init f2fs-specific super block info */ 4478 sbi->valid_super_block = valid_super_block; 4479 4480 /* disallow all the data/node/meta page writes */ 4481 set_sbi_flag(sbi, SBI_POR_DOING); 4482 4483 err = f2fs_init_write_merge_io(sbi); 4484 if (err) 4485 goto free_bio_info; 4486 4487 init_sb_info(sbi); 4488 4489 err = f2fs_init_iostat(sbi); 4490 if (err) 4491 goto free_bio_info; 4492 4493 err = init_percpu_info(sbi); 4494 if (err) 4495 goto free_iostat; 4496 4497 /* init per sbi slab cache */ 4498 err = f2fs_init_xattr_caches(sbi); 4499 if (err) 4500 goto free_percpu; 4501 err = f2fs_init_page_array_cache(sbi); 4502 if (err) 4503 goto free_xattr_cache; 4504 4505 /* get an inode for meta space */ 4506 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi)); 4507 if (IS_ERR(sbi->meta_inode)) { 4508 f2fs_err(sbi, "Failed to read F2FS meta data inode"); 4509 err = PTR_ERR(sbi->meta_inode); 4510 goto free_page_array_cache; 4511 } 4512 4513 err = f2fs_get_valid_checkpoint(sbi); 4514 if (err) { 4515 f2fs_err(sbi, "Failed to get valid F2FS checkpoint"); 4516 goto free_meta_inode; 4517 } 4518 4519 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_QUOTA_NEED_FSCK_FLAG)) 4520 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 4521 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_DISABLED_QUICK_FLAG)) { 4522 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK); 4523 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL; 4524 } 4525 4526 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FSCK_FLAG)) 4527 set_sbi_flag(sbi, SBI_NEED_FSCK); 4528 4529 /* Initialize device list */ 4530 err = f2fs_scan_devices(sbi); 4531 if (err) { 4532 f2fs_err(sbi, "Failed to find devices"); 4533 goto free_devices; 4534 } 4535 4536 err = f2fs_init_post_read_wq(sbi); 4537 if (err) { 4538 f2fs_err(sbi, "Failed to initialize post read workqueue"); 4539 goto free_devices; 4540 } 4541 4542 sbi->total_valid_node_count = 4543 le32_to_cpu(sbi->ckpt->valid_node_count); 4544 percpu_counter_set(&sbi->total_valid_inode_count, 4545 le32_to_cpu(sbi->ckpt->valid_inode_count)); 4546 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count); 4547 sbi->total_valid_block_count = 4548 le64_to_cpu(sbi->ckpt->valid_block_count); 4549 sbi->last_valid_block_count = sbi->total_valid_block_count; 4550 sbi->reserved_blocks = 0; 4551 sbi->current_reserved_blocks = 0; 4552 limit_reserve_root(sbi); 4553 adjust_unusable_cap_perc(sbi); 4554 4555 f2fs_init_extent_cache_info(sbi); 4556 4557 f2fs_init_ino_entry_info(sbi); 4558 4559 f2fs_init_fsync_node_info(sbi); 4560 4561 /* setup checkpoint request control and start checkpoint issue thread */ 4562 f2fs_init_ckpt_req_control(sbi); 4563 if (!f2fs_readonly(sb) && !test_opt(sbi, DISABLE_CHECKPOINT) && 4564 test_opt(sbi, MERGE_CHECKPOINT)) { 4565 err = f2fs_start_ckpt_thread(sbi); 4566 if (err) { 4567 f2fs_err(sbi, 4568 "Failed to start F2FS issue_checkpoint_thread (%d)", 4569 err); 4570 goto stop_ckpt_thread; 4571 } 4572 } 4573 4574 /* setup f2fs internal modules */ 4575 err = f2fs_build_segment_manager(sbi); 4576 if (err) { 4577 f2fs_err(sbi, "Failed to initialize F2FS segment manager (%d)", 4578 err); 4579 goto free_sm; 4580 } 4581 err = f2fs_build_node_manager(sbi); 4582 if (err) { 4583 f2fs_err(sbi, "Failed to initialize F2FS node manager (%d)", 4584 err); 4585 goto free_nm; 4586 } 4587 4588 /* For write statistics */ 4589 sbi->sectors_written_start = f2fs_get_sectors_written(sbi); 4590 4591 /* Read accumulated write IO statistics if exists */ 4592 seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE); 4593 if (__exist_node_summaries(sbi)) 4594 sbi->kbytes_written = 4595 le64_to_cpu(seg_i->journal->info.kbytes_written); 4596 4597 f2fs_build_gc_manager(sbi); 4598 4599 err = f2fs_build_stats(sbi); 4600 if (err) 4601 goto free_nm; 4602 4603 /* get an inode for node space */ 4604 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi)); 4605 if (IS_ERR(sbi->node_inode)) { 4606 f2fs_err(sbi, "Failed to read node inode"); 4607 err = PTR_ERR(sbi->node_inode); 4608 goto free_stats; 4609 } 4610 4611 /* read root inode and dentry */ 4612 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi)); 4613 if (IS_ERR(root)) { 4614 f2fs_err(sbi, "Failed to read root inode"); 4615 err = PTR_ERR(root); 4616 goto free_node_inode; 4617 } 4618 if (!S_ISDIR(root->i_mode) || !root->i_blocks || 4619 !root->i_size || !root->i_nlink) { 4620 iput(root); 4621 err = -EINVAL; 4622 goto free_node_inode; 4623 } 4624 4625 generic_set_sb_d_ops(sb); 4626 sb->s_root = d_make_root(root); /* allocate root dentry */ 4627 if (!sb->s_root) { 4628 err = -ENOMEM; 4629 goto free_node_inode; 4630 } 4631 4632 err = f2fs_init_compress_inode(sbi); 4633 if (err) 4634 goto free_root_inode; 4635 4636 err = f2fs_register_sysfs(sbi); 4637 if (err) 4638 goto free_compress_inode; 4639 4640 #ifdef CONFIG_QUOTA 4641 /* Enable quota usage during mount */ 4642 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) { 4643 err = f2fs_enable_quotas(sb); 4644 if (err) 4645 f2fs_err(sbi, "Cannot turn on quotas: error %d", err); 4646 } 4647 4648 quota_enabled = f2fs_recover_quota_begin(sbi); 4649 #endif 4650 /* if there are any orphan inodes, free them */ 4651 err = f2fs_recover_orphan_inodes(sbi); 4652 if (err) 4653 goto free_meta; 4654 4655 if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG))) 4656 goto reset_checkpoint; 4657 4658 /* recover fsynced data */ 4659 if (!test_opt(sbi, DISABLE_ROLL_FORWARD) && 4660 !test_opt(sbi, NORECOVERY)) { 4661 /* 4662 * mount should be failed, when device has readonly mode, and 4663 * previous checkpoint was not done by clean system shutdown. 4664 */ 4665 if (f2fs_hw_is_readonly(sbi)) { 4666 if (!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) { 4667 err = f2fs_recover_fsync_data(sbi, true); 4668 if (err > 0) { 4669 err = -EROFS; 4670 f2fs_err(sbi, "Need to recover fsync data, but " 4671 "write access unavailable, please try " 4672 "mount w/ disable_roll_forward or norecovery"); 4673 } 4674 if (err < 0) 4675 goto free_meta; 4676 } 4677 f2fs_info(sbi, "write access unavailable, skipping recovery"); 4678 goto reset_checkpoint; 4679 } 4680 4681 if (need_fsck) 4682 set_sbi_flag(sbi, SBI_NEED_FSCK); 4683 4684 if (skip_recovery) 4685 goto reset_checkpoint; 4686 4687 err = f2fs_recover_fsync_data(sbi, false); 4688 if (err < 0) { 4689 if (err != -ENOMEM) 4690 skip_recovery = true; 4691 need_fsck = true; 4692 f2fs_err(sbi, "Cannot recover all fsync data errno=%d", 4693 err); 4694 goto free_meta; 4695 } 4696 } else { 4697 err = f2fs_recover_fsync_data(sbi, true); 4698 4699 if (!f2fs_readonly(sb) && err > 0) { 4700 err = -EINVAL; 4701 f2fs_err(sbi, "Need to recover fsync data"); 4702 goto free_meta; 4703 } 4704 } 4705 4706 #ifdef CONFIG_QUOTA 4707 f2fs_recover_quota_end(sbi, quota_enabled); 4708 #endif 4709 reset_checkpoint: 4710 /* 4711 * If the f2fs is not readonly and fsync data recovery succeeds, 4712 * check zoned block devices' write pointer consistency. 4713 */ 4714 if (f2fs_sb_has_blkzoned(sbi) && !f2fs_readonly(sb)) { 4715 int err2; 4716 4717 f2fs_notice(sbi, "Checking entire write pointers"); 4718 err2 = f2fs_check_write_pointer(sbi); 4719 if (err2) 4720 err = err2; 4721 } 4722 if (err) 4723 goto free_meta; 4724 4725 err = f2fs_init_inmem_curseg(sbi); 4726 if (err) 4727 goto sync_free_meta; 4728 4729 /* f2fs_recover_fsync_data() cleared this already */ 4730 clear_sbi_flag(sbi, SBI_POR_DOING); 4731 4732 if (test_opt(sbi, DISABLE_CHECKPOINT)) { 4733 err = f2fs_disable_checkpoint(sbi); 4734 if (err) 4735 goto sync_free_meta; 4736 } else if (is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)) { 4737 f2fs_enable_checkpoint(sbi); 4738 } 4739 4740 /* 4741 * If filesystem is not mounted as read-only then 4742 * do start the gc_thread. 4743 */ 4744 if ((F2FS_OPTION(sbi).bggc_mode != BGGC_MODE_OFF || 4745 test_opt(sbi, GC_MERGE)) && !f2fs_readonly(sb)) { 4746 /* After POR, we can run background GC thread.*/ 4747 err = f2fs_start_gc_thread(sbi); 4748 if (err) 4749 goto sync_free_meta; 4750 } 4751 kvfree(options); 4752 4753 /* recover broken superblock */ 4754 if (recovery) { 4755 err = f2fs_commit_super(sbi, true); 4756 f2fs_info(sbi, "Try to recover %dth superblock, ret: %d", 4757 sbi->valid_super_block ? 1 : 2, err); 4758 } 4759 4760 f2fs_join_shrinker(sbi); 4761 4762 f2fs_tuning_parameters(sbi); 4763 4764 f2fs_notice(sbi, "Mounted with checkpoint version = %llx", 4765 cur_cp_version(F2FS_CKPT(sbi))); 4766 f2fs_update_time(sbi, CP_TIME); 4767 f2fs_update_time(sbi, REQ_TIME); 4768 clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK); 4769 return 0; 4770 4771 sync_free_meta: 4772 /* safe to flush all the data */ 4773 sync_filesystem(sbi->sb); 4774 retry_cnt = 0; 4775 4776 free_meta: 4777 #ifdef CONFIG_QUOTA 4778 f2fs_truncate_quota_inode_pages(sb); 4779 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) 4780 f2fs_quota_off_umount(sbi->sb); 4781 #endif 4782 /* 4783 * Some dirty meta pages can be produced by f2fs_recover_orphan_inodes() 4784 * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg() 4785 * followed by f2fs_write_checkpoint() through f2fs_write_node_pages(), which 4786 * falls into an infinite loop in f2fs_sync_meta_pages(). 4787 */ 4788 truncate_inode_pages_final(META_MAPPING(sbi)); 4789 /* evict some inodes being cached by GC */ 4790 evict_inodes(sb); 4791 f2fs_unregister_sysfs(sbi); 4792 free_compress_inode: 4793 f2fs_destroy_compress_inode(sbi); 4794 free_root_inode: 4795 dput(sb->s_root); 4796 sb->s_root = NULL; 4797 free_node_inode: 4798 f2fs_release_ino_entry(sbi, true); 4799 truncate_inode_pages_final(NODE_MAPPING(sbi)); 4800 iput(sbi->node_inode); 4801 sbi->node_inode = NULL; 4802 free_stats: 4803 f2fs_destroy_stats(sbi); 4804 free_nm: 4805 /* stop discard thread before destroying node manager */ 4806 f2fs_stop_discard_thread(sbi); 4807 f2fs_destroy_node_manager(sbi); 4808 free_sm: 4809 f2fs_destroy_segment_manager(sbi); 4810 stop_ckpt_thread: 4811 f2fs_stop_ckpt_thread(sbi); 4812 /* flush s_error_work before sbi destroy */ 4813 flush_work(&sbi->s_error_work); 4814 f2fs_destroy_post_read_wq(sbi); 4815 free_devices: 4816 destroy_device_list(sbi); 4817 kvfree(sbi->ckpt); 4818 free_meta_inode: 4819 make_bad_inode(sbi->meta_inode); 4820 iput(sbi->meta_inode); 4821 sbi->meta_inode = NULL; 4822 free_page_array_cache: 4823 f2fs_destroy_page_array_cache(sbi); 4824 free_xattr_cache: 4825 f2fs_destroy_xattr_caches(sbi); 4826 free_percpu: 4827 destroy_percpu_info(sbi); 4828 free_iostat: 4829 f2fs_destroy_iostat(sbi); 4830 free_bio_info: 4831 for (i = 0; i < NR_PAGE_TYPE; i++) 4832 kvfree(sbi->write_io[i]); 4833 4834 #if IS_ENABLED(CONFIG_UNICODE) 4835 utf8_unload(sb->s_encoding); 4836 sb->s_encoding = NULL; 4837 #endif 4838 free_options: 4839 #ifdef CONFIG_QUOTA 4840 for (i = 0; i < MAXQUOTAS; i++) 4841 kfree(F2FS_OPTION(sbi).s_qf_names[i]); 4842 #endif 4843 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy); 4844 kvfree(options); 4845 free_sb_buf: 4846 kfree(raw_super); 4847 free_sbi: 4848 if (sbi->s_chksum_driver) 4849 crypto_free_shash(sbi->s_chksum_driver); 4850 kfree(sbi); 4851 sb->s_fs_info = NULL; 4852 4853 /* give only one another chance */ 4854 if (retry_cnt > 0 && skip_recovery) { 4855 retry_cnt--; 4856 shrink_dcache_sb(sb); 4857 goto try_onemore; 4858 } 4859 return err; 4860 } 4861 4862 static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags, 4863 const char *dev_name, void *data) 4864 { 4865 return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super); 4866 } 4867 4868 static void kill_f2fs_super(struct super_block *sb) 4869 { 4870 struct f2fs_sb_info *sbi = F2FS_SB(sb); 4871 4872 if (sb->s_root) { 4873 set_sbi_flag(sbi, SBI_IS_CLOSE); 4874 f2fs_stop_gc_thread(sbi); 4875 f2fs_stop_discard_thread(sbi); 4876 4877 #ifdef CONFIG_F2FS_FS_COMPRESSION 4878 /* 4879 * latter evict_inode() can bypass checking and invalidating 4880 * compress inode cache. 4881 */ 4882 if (test_opt(sbi, COMPRESS_CACHE)) 4883 truncate_inode_pages_final(COMPRESS_MAPPING(sbi)); 4884 #endif 4885 4886 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) || 4887 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) { 4888 struct cp_control cpc = { 4889 .reason = CP_UMOUNT, 4890 }; 4891 stat_inc_cp_call_count(sbi, TOTAL_CALL); 4892 f2fs_write_checkpoint(sbi, &cpc); 4893 } 4894 4895 if (is_sbi_flag_set(sbi, SBI_IS_RECOVERED) && f2fs_readonly(sb)) 4896 sb->s_flags &= ~SB_RDONLY; 4897 } 4898 kill_block_super(sb); 4899 /* Release block devices last, after fscrypt_destroy_keyring(). */ 4900 if (sbi) { 4901 destroy_device_list(sbi); 4902 kfree(sbi); 4903 sb->s_fs_info = NULL; 4904 } 4905 } 4906 4907 static struct file_system_type f2fs_fs_type = { 4908 .owner = THIS_MODULE, 4909 .name = "f2fs", 4910 .mount = f2fs_mount, 4911 .kill_sb = kill_f2fs_super, 4912 .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP, 4913 }; 4914 MODULE_ALIAS_FS("f2fs"); 4915 4916 static int __init init_inodecache(void) 4917 { 4918 f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache", 4919 sizeof(struct f2fs_inode_info), 0, 4920 SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL); 4921 return f2fs_inode_cachep ? 0 : -ENOMEM; 4922 } 4923 4924 static void destroy_inodecache(void) 4925 { 4926 /* 4927 * Make sure all delayed rcu free inodes are flushed before we 4928 * destroy cache. 4929 */ 4930 rcu_barrier(); 4931 kmem_cache_destroy(f2fs_inode_cachep); 4932 } 4933 4934 static int __init init_f2fs_fs(void) 4935 { 4936 int err; 4937 4938 err = init_inodecache(); 4939 if (err) 4940 goto fail; 4941 err = f2fs_create_node_manager_caches(); 4942 if (err) 4943 goto free_inodecache; 4944 err = f2fs_create_segment_manager_caches(); 4945 if (err) 4946 goto free_node_manager_caches; 4947 err = f2fs_create_checkpoint_caches(); 4948 if (err) 4949 goto free_segment_manager_caches; 4950 err = f2fs_create_recovery_cache(); 4951 if (err) 4952 goto free_checkpoint_caches; 4953 err = f2fs_create_extent_cache(); 4954 if (err) 4955 goto free_recovery_cache; 4956 err = f2fs_create_garbage_collection_cache(); 4957 if (err) 4958 goto free_extent_cache; 4959 err = f2fs_init_sysfs(); 4960 if (err) 4961 goto free_garbage_collection_cache; 4962 err = f2fs_init_shrinker(); 4963 if (err) 4964 goto free_sysfs; 4965 err = register_filesystem(&f2fs_fs_type); 4966 if (err) 4967 goto free_shrinker; 4968 f2fs_create_root_stats(); 4969 err = f2fs_init_post_read_processing(); 4970 if (err) 4971 goto free_root_stats; 4972 err = f2fs_init_iostat_processing(); 4973 if (err) 4974 goto free_post_read; 4975 err = f2fs_init_bio_entry_cache(); 4976 if (err) 4977 goto free_iostat; 4978 err = f2fs_init_bioset(); 4979 if (err) 4980 goto free_bio_entry_cache; 4981 err = f2fs_init_compress_mempool(); 4982 if (err) 4983 goto free_bioset; 4984 err = f2fs_init_compress_cache(); 4985 if (err) 4986 goto free_compress_mempool; 4987 err = f2fs_create_casefold_cache(); 4988 if (err) 4989 goto free_compress_cache; 4990 return 0; 4991 free_compress_cache: 4992 f2fs_destroy_compress_cache(); 4993 free_compress_mempool: 4994 f2fs_destroy_compress_mempool(); 4995 free_bioset: 4996 f2fs_destroy_bioset(); 4997 free_bio_entry_cache: 4998 f2fs_destroy_bio_entry_cache(); 4999 free_iostat: 5000 f2fs_destroy_iostat_processing(); 5001 free_post_read: 5002 f2fs_destroy_post_read_processing(); 5003 free_root_stats: 5004 f2fs_destroy_root_stats(); 5005 unregister_filesystem(&f2fs_fs_type); 5006 free_shrinker: 5007 f2fs_exit_shrinker(); 5008 free_sysfs: 5009 f2fs_exit_sysfs(); 5010 free_garbage_collection_cache: 5011 f2fs_destroy_garbage_collection_cache(); 5012 free_extent_cache: 5013 f2fs_destroy_extent_cache(); 5014 free_recovery_cache: 5015 f2fs_destroy_recovery_cache(); 5016 free_checkpoint_caches: 5017 f2fs_destroy_checkpoint_caches(); 5018 free_segment_manager_caches: 5019 f2fs_destroy_segment_manager_caches(); 5020 free_node_manager_caches: 5021 f2fs_destroy_node_manager_caches(); 5022 free_inodecache: 5023 destroy_inodecache(); 5024 fail: 5025 return err; 5026 } 5027 5028 static void __exit exit_f2fs_fs(void) 5029 { 5030 f2fs_destroy_casefold_cache(); 5031 f2fs_destroy_compress_cache(); 5032 f2fs_destroy_compress_mempool(); 5033 f2fs_destroy_bioset(); 5034 f2fs_destroy_bio_entry_cache(); 5035 f2fs_destroy_iostat_processing(); 5036 f2fs_destroy_post_read_processing(); 5037 f2fs_destroy_root_stats(); 5038 unregister_filesystem(&f2fs_fs_type); 5039 f2fs_exit_shrinker(); 5040 f2fs_exit_sysfs(); 5041 f2fs_destroy_garbage_collection_cache(); 5042 f2fs_destroy_extent_cache(); 5043 f2fs_destroy_recovery_cache(); 5044 f2fs_destroy_checkpoint_caches(); 5045 f2fs_destroy_segment_manager_caches(); 5046 f2fs_destroy_node_manager_caches(); 5047 destroy_inodecache(); 5048 } 5049 5050 module_init(init_f2fs_fs) 5051 module_exit(exit_f2fs_fs) 5052 5053 MODULE_AUTHOR("Samsung Electronics's Praesto Team"); 5054 MODULE_DESCRIPTION("Flash Friendly File System"); 5055 MODULE_LICENSE("GPL"); 5056 MODULE_SOFTDEP("pre: crc32"); 5057 5058