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] = "invalid blkaddr", 65 }; 66 67 void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate, 68 unsigned int type) 69 { 70 struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info; 71 72 if (rate) { 73 atomic_set(&ffi->inject_ops, 0); 74 ffi->inject_rate = rate; 75 } 76 77 if (type) 78 ffi->inject_type = type; 79 80 if (!rate && !type) 81 memset(ffi, 0, sizeof(struct f2fs_fault_info)); 82 } 83 #endif 84 85 /* f2fs-wide shrinker description */ 86 static struct shrinker f2fs_shrinker_info = { 87 .scan_objects = f2fs_shrink_scan, 88 .count_objects = f2fs_shrink_count, 89 .seeks = DEFAULT_SEEKS, 90 }; 91 92 enum { 93 Opt_gc_background, 94 Opt_disable_roll_forward, 95 Opt_norecovery, 96 Opt_discard, 97 Opt_nodiscard, 98 Opt_noheap, 99 Opt_heap, 100 Opt_user_xattr, 101 Opt_nouser_xattr, 102 Opt_acl, 103 Opt_noacl, 104 Opt_active_logs, 105 Opt_disable_ext_identify, 106 Opt_inline_xattr, 107 Opt_noinline_xattr, 108 Opt_inline_xattr_size, 109 Opt_inline_data, 110 Opt_inline_dentry, 111 Opt_noinline_dentry, 112 Opt_flush_merge, 113 Opt_noflush_merge, 114 Opt_barrier, 115 Opt_nobarrier, 116 Opt_fastboot, 117 Opt_extent_cache, 118 Opt_noextent_cache, 119 Opt_noinline_data, 120 Opt_data_flush, 121 Opt_reserve_root, 122 Opt_resgid, 123 Opt_resuid, 124 Opt_mode, 125 Opt_fault_injection, 126 Opt_fault_type, 127 Opt_lazytime, 128 Opt_nolazytime, 129 Opt_quota, 130 Opt_noquota, 131 Opt_usrquota, 132 Opt_grpquota, 133 Opt_prjquota, 134 Opt_usrjquota, 135 Opt_grpjquota, 136 Opt_prjjquota, 137 Opt_offusrjquota, 138 Opt_offgrpjquota, 139 Opt_offprjjquota, 140 Opt_jqfmt_vfsold, 141 Opt_jqfmt_vfsv0, 142 Opt_jqfmt_vfsv1, 143 Opt_alloc, 144 Opt_fsync, 145 Opt_test_dummy_encryption, 146 Opt_inlinecrypt, 147 Opt_checkpoint_disable, 148 Opt_checkpoint_disable_cap, 149 Opt_checkpoint_disable_cap_perc, 150 Opt_checkpoint_enable, 151 Opt_checkpoint_merge, 152 Opt_nocheckpoint_merge, 153 Opt_compress_algorithm, 154 Opt_compress_log_size, 155 Opt_compress_extension, 156 Opt_nocompress_extension, 157 Opt_compress_chksum, 158 Opt_compress_mode, 159 Opt_compress_cache, 160 Opt_atgc, 161 Opt_gc_merge, 162 Opt_nogc_merge, 163 Opt_discard_unit, 164 Opt_memory_mode, 165 Opt_age_extent_cache, 166 Opt_errors, 167 Opt_err, 168 }; 169 170 static match_table_t f2fs_tokens = { 171 {Opt_gc_background, "background_gc=%s"}, 172 {Opt_disable_roll_forward, "disable_roll_forward"}, 173 {Opt_norecovery, "norecovery"}, 174 {Opt_discard, "discard"}, 175 {Opt_nodiscard, "nodiscard"}, 176 {Opt_noheap, "no_heap"}, 177 {Opt_heap, "heap"}, 178 {Opt_user_xattr, "user_xattr"}, 179 {Opt_nouser_xattr, "nouser_xattr"}, 180 {Opt_acl, "acl"}, 181 {Opt_noacl, "noacl"}, 182 {Opt_active_logs, "active_logs=%u"}, 183 {Opt_disable_ext_identify, "disable_ext_identify"}, 184 {Opt_inline_xattr, "inline_xattr"}, 185 {Opt_noinline_xattr, "noinline_xattr"}, 186 {Opt_inline_xattr_size, "inline_xattr_size=%u"}, 187 {Opt_inline_data, "inline_data"}, 188 {Opt_inline_dentry, "inline_dentry"}, 189 {Opt_noinline_dentry, "noinline_dentry"}, 190 {Opt_flush_merge, "flush_merge"}, 191 {Opt_noflush_merge, "noflush_merge"}, 192 {Opt_barrier, "barrier"}, 193 {Opt_nobarrier, "nobarrier"}, 194 {Opt_fastboot, "fastboot"}, 195 {Opt_extent_cache, "extent_cache"}, 196 {Opt_noextent_cache, "noextent_cache"}, 197 {Opt_noinline_data, "noinline_data"}, 198 {Opt_data_flush, "data_flush"}, 199 {Opt_reserve_root, "reserve_root=%u"}, 200 {Opt_resgid, "resgid=%u"}, 201 {Opt_resuid, "resuid=%u"}, 202 {Opt_mode, "mode=%s"}, 203 {Opt_fault_injection, "fault_injection=%u"}, 204 {Opt_fault_type, "fault_type=%u"}, 205 {Opt_lazytime, "lazytime"}, 206 {Opt_nolazytime, "nolazytime"}, 207 {Opt_quota, "quota"}, 208 {Opt_noquota, "noquota"}, 209 {Opt_usrquota, "usrquota"}, 210 {Opt_grpquota, "grpquota"}, 211 {Opt_prjquota, "prjquota"}, 212 {Opt_usrjquota, "usrjquota=%s"}, 213 {Opt_grpjquota, "grpjquota=%s"}, 214 {Opt_prjjquota, "prjjquota=%s"}, 215 {Opt_offusrjquota, "usrjquota="}, 216 {Opt_offgrpjquota, "grpjquota="}, 217 {Opt_offprjjquota, "prjjquota="}, 218 {Opt_jqfmt_vfsold, "jqfmt=vfsold"}, 219 {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"}, 220 {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"}, 221 {Opt_alloc, "alloc_mode=%s"}, 222 {Opt_fsync, "fsync_mode=%s"}, 223 {Opt_test_dummy_encryption, "test_dummy_encryption=%s"}, 224 {Opt_test_dummy_encryption, "test_dummy_encryption"}, 225 {Opt_inlinecrypt, "inlinecrypt"}, 226 {Opt_checkpoint_disable, "checkpoint=disable"}, 227 {Opt_checkpoint_disable_cap, "checkpoint=disable:%u"}, 228 {Opt_checkpoint_disable_cap_perc, "checkpoint=disable:%u%%"}, 229 {Opt_checkpoint_enable, "checkpoint=enable"}, 230 {Opt_checkpoint_merge, "checkpoint_merge"}, 231 {Opt_nocheckpoint_merge, "nocheckpoint_merge"}, 232 {Opt_compress_algorithm, "compress_algorithm=%s"}, 233 {Opt_compress_log_size, "compress_log_size=%u"}, 234 {Opt_compress_extension, "compress_extension=%s"}, 235 {Opt_nocompress_extension, "nocompress_extension=%s"}, 236 {Opt_compress_chksum, "compress_chksum"}, 237 {Opt_compress_mode, "compress_mode=%s"}, 238 {Opt_compress_cache, "compress_cache"}, 239 {Opt_atgc, "atgc"}, 240 {Opt_gc_merge, "gc_merge"}, 241 {Opt_nogc_merge, "nogc_merge"}, 242 {Opt_discard_unit, "discard_unit=%s"}, 243 {Opt_memory_mode, "memory=%s"}, 244 {Opt_age_extent_cache, "age_extent_cache"}, 245 {Opt_errors, "errors=%s"}, 246 {Opt_err, NULL}, 247 }; 248 249 void f2fs_printk(struct f2fs_sb_info *sbi, bool limit_rate, 250 const char *fmt, ...) 251 { 252 struct va_format vaf; 253 va_list args; 254 int level; 255 256 va_start(args, fmt); 257 258 level = printk_get_level(fmt); 259 vaf.fmt = printk_skip_level(fmt); 260 vaf.va = &args; 261 if (limit_rate) 262 printk_ratelimited("%c%cF2FS-fs (%s): %pV\n", 263 KERN_SOH_ASCII, level, sbi->sb->s_id, &vaf); 264 else 265 printk("%c%cF2FS-fs (%s): %pV\n", 266 KERN_SOH_ASCII, level, sbi->sb->s_id, &vaf); 267 268 va_end(args); 269 } 270 271 #if IS_ENABLED(CONFIG_UNICODE) 272 static const struct f2fs_sb_encodings { 273 __u16 magic; 274 char *name; 275 unsigned int version; 276 } f2fs_sb_encoding_map[] = { 277 {F2FS_ENC_UTF8_12_1, "utf8", UNICODE_AGE(12, 1, 0)}, 278 }; 279 280 static const struct f2fs_sb_encodings * 281 f2fs_sb_read_encoding(const struct f2fs_super_block *sb) 282 { 283 __u16 magic = le16_to_cpu(sb->s_encoding); 284 int i; 285 286 for (i = 0; i < ARRAY_SIZE(f2fs_sb_encoding_map); i++) 287 if (magic == f2fs_sb_encoding_map[i].magic) 288 return &f2fs_sb_encoding_map[i]; 289 290 return NULL; 291 } 292 293 struct kmem_cache *f2fs_cf_name_slab; 294 static int __init f2fs_create_casefold_cache(void) 295 { 296 f2fs_cf_name_slab = f2fs_kmem_cache_create("f2fs_casefolded_name", 297 F2FS_NAME_LEN); 298 return f2fs_cf_name_slab ? 0 : -ENOMEM; 299 } 300 301 static void f2fs_destroy_casefold_cache(void) 302 { 303 kmem_cache_destroy(f2fs_cf_name_slab); 304 } 305 #else 306 static int __init f2fs_create_casefold_cache(void) { return 0; } 307 static void f2fs_destroy_casefold_cache(void) { } 308 #endif 309 310 static inline void limit_reserve_root(struct f2fs_sb_info *sbi) 311 { 312 block_t limit = min((sbi->user_block_count >> 3), 313 sbi->user_block_count - sbi->reserved_blocks); 314 315 /* limit is 12.5% */ 316 if (test_opt(sbi, RESERVE_ROOT) && 317 F2FS_OPTION(sbi).root_reserved_blocks > limit) { 318 F2FS_OPTION(sbi).root_reserved_blocks = limit; 319 f2fs_info(sbi, "Reduce reserved blocks for root = %u", 320 F2FS_OPTION(sbi).root_reserved_blocks); 321 } 322 if (!test_opt(sbi, RESERVE_ROOT) && 323 (!uid_eq(F2FS_OPTION(sbi).s_resuid, 324 make_kuid(&init_user_ns, F2FS_DEF_RESUID)) || 325 !gid_eq(F2FS_OPTION(sbi).s_resgid, 326 make_kgid(&init_user_ns, F2FS_DEF_RESGID)))) 327 f2fs_info(sbi, "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root", 328 from_kuid_munged(&init_user_ns, 329 F2FS_OPTION(sbi).s_resuid), 330 from_kgid_munged(&init_user_ns, 331 F2FS_OPTION(sbi).s_resgid)); 332 } 333 334 static inline void adjust_unusable_cap_perc(struct f2fs_sb_info *sbi) 335 { 336 if (!F2FS_OPTION(sbi).unusable_cap_perc) 337 return; 338 339 if (F2FS_OPTION(sbi).unusable_cap_perc == 100) 340 F2FS_OPTION(sbi).unusable_cap = sbi->user_block_count; 341 else 342 F2FS_OPTION(sbi).unusable_cap = (sbi->user_block_count / 100) * 343 F2FS_OPTION(sbi).unusable_cap_perc; 344 345 f2fs_info(sbi, "Adjust unusable cap for checkpoint=disable = %u / %u%%", 346 F2FS_OPTION(sbi).unusable_cap, 347 F2FS_OPTION(sbi).unusable_cap_perc); 348 } 349 350 static void init_once(void *foo) 351 { 352 struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo; 353 354 inode_init_once(&fi->vfs_inode); 355 } 356 357 #ifdef CONFIG_QUOTA 358 static const char * const quotatypes[] = INITQFNAMES; 359 #define QTYPE2NAME(t) (quotatypes[t]) 360 static int f2fs_set_qf_name(struct super_block *sb, int qtype, 361 substring_t *args) 362 { 363 struct f2fs_sb_info *sbi = F2FS_SB(sb); 364 char *qname; 365 int ret = -EINVAL; 366 367 if (sb_any_quota_loaded(sb) && !F2FS_OPTION(sbi).s_qf_names[qtype]) { 368 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on"); 369 return -EINVAL; 370 } 371 if (f2fs_sb_has_quota_ino(sbi)) { 372 f2fs_info(sbi, "QUOTA feature is enabled, so ignore qf_name"); 373 return 0; 374 } 375 376 qname = match_strdup(args); 377 if (!qname) { 378 f2fs_err(sbi, "Not enough memory for storing quotafile name"); 379 return -ENOMEM; 380 } 381 if (F2FS_OPTION(sbi).s_qf_names[qtype]) { 382 if (strcmp(F2FS_OPTION(sbi).s_qf_names[qtype], qname) == 0) 383 ret = 0; 384 else 385 f2fs_err(sbi, "%s quota file already specified", 386 QTYPE2NAME(qtype)); 387 goto errout; 388 } 389 if (strchr(qname, '/')) { 390 f2fs_err(sbi, "quotafile must be on filesystem root"); 391 goto errout; 392 } 393 F2FS_OPTION(sbi).s_qf_names[qtype] = qname; 394 set_opt(sbi, QUOTA); 395 return 0; 396 errout: 397 kfree(qname); 398 return ret; 399 } 400 401 static int f2fs_clear_qf_name(struct super_block *sb, int qtype) 402 { 403 struct f2fs_sb_info *sbi = F2FS_SB(sb); 404 405 if (sb_any_quota_loaded(sb) && F2FS_OPTION(sbi).s_qf_names[qtype]) { 406 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on"); 407 return -EINVAL; 408 } 409 kfree(F2FS_OPTION(sbi).s_qf_names[qtype]); 410 F2FS_OPTION(sbi).s_qf_names[qtype] = NULL; 411 return 0; 412 } 413 414 static int f2fs_check_quota_options(struct f2fs_sb_info *sbi) 415 { 416 /* 417 * We do the test below only for project quotas. 'usrquota' and 418 * 'grpquota' mount options are allowed even without quota feature 419 * to support legacy quotas in quota files. 420 */ 421 if (test_opt(sbi, PRJQUOTA) && !f2fs_sb_has_project_quota(sbi)) { 422 f2fs_err(sbi, "Project quota feature not enabled. Cannot enable project quota enforcement."); 423 return -1; 424 } 425 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] || 426 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] || 427 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) { 428 if (test_opt(sbi, USRQUOTA) && 429 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]) 430 clear_opt(sbi, USRQUOTA); 431 432 if (test_opt(sbi, GRPQUOTA) && 433 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]) 434 clear_opt(sbi, GRPQUOTA); 435 436 if (test_opt(sbi, PRJQUOTA) && 437 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) 438 clear_opt(sbi, PRJQUOTA); 439 440 if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) || 441 test_opt(sbi, PRJQUOTA)) { 442 f2fs_err(sbi, "old and new quota format mixing"); 443 return -1; 444 } 445 446 if (!F2FS_OPTION(sbi).s_jquota_fmt) { 447 f2fs_err(sbi, "journaled quota format not specified"); 448 return -1; 449 } 450 } 451 452 if (f2fs_sb_has_quota_ino(sbi) && F2FS_OPTION(sbi).s_jquota_fmt) { 453 f2fs_info(sbi, "QUOTA feature is enabled, so ignore jquota_fmt"); 454 F2FS_OPTION(sbi).s_jquota_fmt = 0; 455 } 456 return 0; 457 } 458 #endif 459 460 static int f2fs_set_test_dummy_encryption(struct super_block *sb, 461 const char *opt, 462 const substring_t *arg, 463 bool is_remount) 464 { 465 struct f2fs_sb_info *sbi = F2FS_SB(sb); 466 struct fs_parameter param = { 467 .type = fs_value_is_string, 468 .string = arg->from ? arg->from : "", 469 }; 470 struct fscrypt_dummy_policy *policy = 471 &F2FS_OPTION(sbi).dummy_enc_policy; 472 int err; 473 474 if (!IS_ENABLED(CONFIG_FS_ENCRYPTION)) { 475 f2fs_warn(sbi, "test_dummy_encryption option not supported"); 476 return -EINVAL; 477 } 478 479 if (!f2fs_sb_has_encrypt(sbi)) { 480 f2fs_err(sbi, "Encrypt feature is off"); 481 return -EINVAL; 482 } 483 484 /* 485 * This mount option is just for testing, and it's not worthwhile to 486 * implement the extra complexity (e.g. RCU protection) that would be 487 * needed to allow it to be set or changed during remount. We do allow 488 * it to be specified during remount, but only if there is no change. 489 */ 490 if (is_remount && !fscrypt_is_dummy_policy_set(policy)) { 491 f2fs_warn(sbi, "Can't set test_dummy_encryption on remount"); 492 return -EINVAL; 493 } 494 495 err = fscrypt_parse_test_dummy_encryption(¶m, policy); 496 if (err) { 497 if (err == -EEXIST) 498 f2fs_warn(sbi, 499 "Can't change test_dummy_encryption on remount"); 500 else if (err == -EINVAL) 501 f2fs_warn(sbi, "Value of option \"%s\" is unrecognized", 502 opt); 503 else 504 f2fs_warn(sbi, "Error processing option \"%s\" [%d]", 505 opt, err); 506 return -EINVAL; 507 } 508 f2fs_warn(sbi, "Test dummy encryption mode enabled"); 509 return 0; 510 } 511 512 #ifdef CONFIG_F2FS_FS_COMPRESSION 513 static bool is_compress_extension_exist(struct f2fs_sb_info *sbi, 514 const char *new_ext, bool is_ext) 515 { 516 unsigned char (*ext)[F2FS_EXTENSION_LEN]; 517 int ext_cnt; 518 int i; 519 520 if (is_ext) { 521 ext = F2FS_OPTION(sbi).extensions; 522 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt; 523 } else { 524 ext = F2FS_OPTION(sbi).noextensions; 525 ext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt; 526 } 527 528 for (i = 0; i < ext_cnt; i++) { 529 if (!strcasecmp(new_ext, ext[i])) 530 return true; 531 } 532 533 return false; 534 } 535 536 /* 537 * 1. The same extension name cannot not appear in both compress and non-compress extension 538 * at the same time. 539 * 2. If the compress extension specifies all files, the types specified by the non-compress 540 * extension will be treated as special cases and will not be compressed. 541 * 3. Don't allow the non-compress extension specifies all files. 542 */ 543 static int f2fs_test_compress_extension(struct f2fs_sb_info *sbi) 544 { 545 unsigned char (*ext)[F2FS_EXTENSION_LEN]; 546 unsigned char (*noext)[F2FS_EXTENSION_LEN]; 547 int ext_cnt, noext_cnt, index = 0, no_index = 0; 548 549 ext = F2FS_OPTION(sbi).extensions; 550 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt; 551 noext = F2FS_OPTION(sbi).noextensions; 552 noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt; 553 554 if (!noext_cnt) 555 return 0; 556 557 for (no_index = 0; no_index < noext_cnt; no_index++) { 558 if (!strcasecmp("*", noext[no_index])) { 559 f2fs_info(sbi, "Don't allow the nocompress extension specifies all files"); 560 return -EINVAL; 561 } 562 for (index = 0; index < ext_cnt; index++) { 563 if (!strcasecmp(ext[index], noext[no_index])) { 564 f2fs_info(sbi, "Don't allow the same extension %s appear in both compress and nocompress extension", 565 ext[index]); 566 return -EINVAL; 567 } 568 } 569 } 570 return 0; 571 } 572 573 #ifdef CONFIG_F2FS_FS_LZ4 574 static int f2fs_set_lz4hc_level(struct f2fs_sb_info *sbi, const char *str) 575 { 576 #ifdef CONFIG_F2FS_FS_LZ4HC 577 unsigned int level; 578 579 if (strlen(str) == 3) { 580 F2FS_OPTION(sbi).compress_level = 0; 581 return 0; 582 } 583 584 str += 3; 585 586 if (str[0] != ':') { 587 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>"); 588 return -EINVAL; 589 } 590 if (kstrtouint(str + 1, 10, &level)) 591 return -EINVAL; 592 593 if (!f2fs_is_compress_level_valid(COMPRESS_LZ4, level)) { 594 f2fs_info(sbi, "invalid lz4hc compress level: %d", level); 595 return -EINVAL; 596 } 597 598 F2FS_OPTION(sbi).compress_level = level; 599 return 0; 600 #else 601 if (strlen(str) == 3) { 602 F2FS_OPTION(sbi).compress_level = 0; 603 return 0; 604 } 605 f2fs_info(sbi, "kernel doesn't support lz4hc compression"); 606 return -EINVAL; 607 #endif 608 } 609 #endif 610 611 #ifdef CONFIG_F2FS_FS_ZSTD 612 static int f2fs_set_zstd_level(struct f2fs_sb_info *sbi, const char *str) 613 { 614 int level; 615 int len = 4; 616 617 if (strlen(str) == len) { 618 F2FS_OPTION(sbi).compress_level = F2FS_ZSTD_DEFAULT_CLEVEL; 619 return 0; 620 } 621 622 str += len; 623 624 if (str[0] != ':') { 625 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>"); 626 return -EINVAL; 627 } 628 if (kstrtoint(str + 1, 10, &level)) 629 return -EINVAL; 630 631 /* f2fs does not support negative compress level now */ 632 if (level < 0) { 633 f2fs_info(sbi, "do not support negative compress level: %d", level); 634 return -ERANGE; 635 } 636 637 if (!f2fs_is_compress_level_valid(COMPRESS_ZSTD, level)) { 638 f2fs_info(sbi, "invalid zstd compress level: %d", level); 639 return -EINVAL; 640 } 641 642 F2FS_OPTION(sbi).compress_level = level; 643 return 0; 644 } 645 #endif 646 #endif 647 648 static int parse_options(struct super_block *sb, char *options, bool is_remount) 649 { 650 struct f2fs_sb_info *sbi = F2FS_SB(sb); 651 substring_t args[MAX_OPT_ARGS]; 652 #ifdef CONFIG_F2FS_FS_COMPRESSION 653 unsigned char (*ext)[F2FS_EXTENSION_LEN]; 654 unsigned char (*noext)[F2FS_EXTENSION_LEN]; 655 int ext_cnt, noext_cnt; 656 #endif 657 char *p, *name; 658 int arg = 0; 659 kuid_t uid; 660 kgid_t gid; 661 int ret; 662 663 if (!options) 664 goto default_check; 665 666 while ((p = strsep(&options, ",")) != NULL) { 667 int token; 668 669 if (!*p) 670 continue; 671 /* 672 * Initialize args struct so we know whether arg was 673 * found; some options take optional arguments. 674 */ 675 args[0].to = args[0].from = NULL; 676 token = match_token(p, f2fs_tokens, args); 677 678 switch (token) { 679 case Opt_gc_background: 680 name = match_strdup(&args[0]); 681 682 if (!name) 683 return -ENOMEM; 684 if (!strcmp(name, "on")) { 685 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON; 686 } else if (!strcmp(name, "off")) { 687 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_OFF; 688 } else if (!strcmp(name, "sync")) { 689 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_SYNC; 690 } else { 691 kfree(name); 692 return -EINVAL; 693 } 694 kfree(name); 695 break; 696 case Opt_disable_roll_forward: 697 set_opt(sbi, DISABLE_ROLL_FORWARD); 698 break; 699 case Opt_norecovery: 700 /* this option mounts f2fs with ro */ 701 set_opt(sbi, NORECOVERY); 702 if (!f2fs_readonly(sb)) 703 return -EINVAL; 704 break; 705 case Opt_discard: 706 if (!f2fs_hw_support_discard(sbi)) { 707 f2fs_warn(sbi, "device does not support discard"); 708 break; 709 } 710 set_opt(sbi, DISCARD); 711 break; 712 case Opt_nodiscard: 713 if (f2fs_hw_should_discard(sbi)) { 714 f2fs_warn(sbi, "discard is required for zoned block devices"); 715 return -EINVAL; 716 } 717 clear_opt(sbi, DISCARD); 718 break; 719 case Opt_noheap: 720 case Opt_heap: 721 f2fs_warn(sbi, "heap/no_heap options were deprecated"); 722 break; 723 #ifdef CONFIG_F2FS_FS_XATTR 724 case Opt_user_xattr: 725 set_opt(sbi, XATTR_USER); 726 break; 727 case Opt_nouser_xattr: 728 clear_opt(sbi, XATTR_USER); 729 break; 730 case Opt_inline_xattr: 731 set_opt(sbi, INLINE_XATTR); 732 break; 733 case Opt_noinline_xattr: 734 clear_opt(sbi, INLINE_XATTR); 735 break; 736 case Opt_inline_xattr_size: 737 if (args->from && match_int(args, &arg)) 738 return -EINVAL; 739 set_opt(sbi, INLINE_XATTR_SIZE); 740 F2FS_OPTION(sbi).inline_xattr_size = arg; 741 break; 742 #else 743 case Opt_user_xattr: 744 f2fs_info(sbi, "user_xattr options not supported"); 745 break; 746 case Opt_nouser_xattr: 747 f2fs_info(sbi, "nouser_xattr options not supported"); 748 break; 749 case Opt_inline_xattr: 750 f2fs_info(sbi, "inline_xattr options not supported"); 751 break; 752 case Opt_noinline_xattr: 753 f2fs_info(sbi, "noinline_xattr options not supported"); 754 break; 755 #endif 756 #ifdef CONFIG_F2FS_FS_POSIX_ACL 757 case Opt_acl: 758 set_opt(sbi, POSIX_ACL); 759 break; 760 case Opt_noacl: 761 clear_opt(sbi, POSIX_ACL); 762 break; 763 #else 764 case Opt_acl: 765 f2fs_info(sbi, "acl options not supported"); 766 break; 767 case Opt_noacl: 768 f2fs_info(sbi, "noacl options not supported"); 769 break; 770 #endif 771 case Opt_active_logs: 772 if (args->from && match_int(args, &arg)) 773 return -EINVAL; 774 if (arg != 2 && arg != 4 && 775 arg != NR_CURSEG_PERSIST_TYPE) 776 return -EINVAL; 777 F2FS_OPTION(sbi).active_logs = arg; 778 break; 779 case Opt_disable_ext_identify: 780 set_opt(sbi, DISABLE_EXT_IDENTIFY); 781 break; 782 case Opt_inline_data: 783 set_opt(sbi, INLINE_DATA); 784 break; 785 case Opt_inline_dentry: 786 set_opt(sbi, INLINE_DENTRY); 787 break; 788 case Opt_noinline_dentry: 789 clear_opt(sbi, INLINE_DENTRY); 790 break; 791 case Opt_flush_merge: 792 set_opt(sbi, FLUSH_MERGE); 793 break; 794 case Opt_noflush_merge: 795 clear_opt(sbi, FLUSH_MERGE); 796 break; 797 case Opt_nobarrier: 798 set_opt(sbi, NOBARRIER); 799 break; 800 case Opt_barrier: 801 clear_opt(sbi, NOBARRIER); 802 break; 803 case Opt_fastboot: 804 set_opt(sbi, FASTBOOT); 805 break; 806 case Opt_extent_cache: 807 set_opt(sbi, READ_EXTENT_CACHE); 808 break; 809 case Opt_noextent_cache: 810 clear_opt(sbi, READ_EXTENT_CACHE); 811 break; 812 case Opt_noinline_data: 813 clear_opt(sbi, INLINE_DATA); 814 break; 815 case Opt_data_flush: 816 set_opt(sbi, DATA_FLUSH); 817 break; 818 case Opt_reserve_root: 819 if (args->from && match_int(args, &arg)) 820 return -EINVAL; 821 if (test_opt(sbi, RESERVE_ROOT)) { 822 f2fs_info(sbi, "Preserve previous reserve_root=%u", 823 F2FS_OPTION(sbi).root_reserved_blocks); 824 } else { 825 F2FS_OPTION(sbi).root_reserved_blocks = arg; 826 set_opt(sbi, RESERVE_ROOT); 827 } 828 break; 829 case Opt_resuid: 830 if (args->from && match_int(args, &arg)) 831 return -EINVAL; 832 uid = make_kuid(current_user_ns(), arg); 833 if (!uid_valid(uid)) { 834 f2fs_err(sbi, "Invalid uid value %d", arg); 835 return -EINVAL; 836 } 837 F2FS_OPTION(sbi).s_resuid = uid; 838 break; 839 case Opt_resgid: 840 if (args->from && match_int(args, &arg)) 841 return -EINVAL; 842 gid = make_kgid(current_user_ns(), arg); 843 if (!gid_valid(gid)) { 844 f2fs_err(sbi, "Invalid gid value %d", arg); 845 return -EINVAL; 846 } 847 F2FS_OPTION(sbi).s_resgid = gid; 848 break; 849 case Opt_mode: 850 name = match_strdup(&args[0]); 851 852 if (!name) 853 return -ENOMEM; 854 if (!strcmp(name, "adaptive")) { 855 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE; 856 } else if (!strcmp(name, "lfs")) { 857 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS; 858 } else if (!strcmp(name, "fragment:segment")) { 859 F2FS_OPTION(sbi).fs_mode = FS_MODE_FRAGMENT_SEG; 860 } else if (!strcmp(name, "fragment:block")) { 861 F2FS_OPTION(sbi).fs_mode = FS_MODE_FRAGMENT_BLK; 862 } else { 863 kfree(name); 864 return -EINVAL; 865 } 866 kfree(name); 867 break; 868 #ifdef CONFIG_F2FS_FAULT_INJECTION 869 case Opt_fault_injection: 870 if (args->from && match_int(args, &arg)) 871 return -EINVAL; 872 f2fs_build_fault_attr(sbi, arg, F2FS_ALL_FAULT_TYPE); 873 set_opt(sbi, FAULT_INJECTION); 874 break; 875 876 case Opt_fault_type: 877 if (args->from && match_int(args, &arg)) 878 return -EINVAL; 879 f2fs_build_fault_attr(sbi, 0, arg); 880 set_opt(sbi, FAULT_INJECTION); 881 break; 882 #else 883 case Opt_fault_injection: 884 f2fs_info(sbi, "fault_injection options not supported"); 885 break; 886 887 case Opt_fault_type: 888 f2fs_info(sbi, "fault_type options not supported"); 889 break; 890 #endif 891 case Opt_lazytime: 892 sb->s_flags |= SB_LAZYTIME; 893 break; 894 case Opt_nolazytime: 895 sb->s_flags &= ~SB_LAZYTIME; 896 break; 897 #ifdef CONFIG_QUOTA 898 case Opt_quota: 899 case Opt_usrquota: 900 set_opt(sbi, USRQUOTA); 901 break; 902 case Opt_grpquota: 903 set_opt(sbi, GRPQUOTA); 904 break; 905 case Opt_prjquota: 906 set_opt(sbi, PRJQUOTA); 907 break; 908 case Opt_usrjquota: 909 ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]); 910 if (ret) 911 return ret; 912 break; 913 case Opt_grpjquota: 914 ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]); 915 if (ret) 916 return ret; 917 break; 918 case Opt_prjjquota: 919 ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]); 920 if (ret) 921 return ret; 922 break; 923 case Opt_offusrjquota: 924 ret = f2fs_clear_qf_name(sb, USRQUOTA); 925 if (ret) 926 return ret; 927 break; 928 case Opt_offgrpjquota: 929 ret = f2fs_clear_qf_name(sb, GRPQUOTA); 930 if (ret) 931 return ret; 932 break; 933 case Opt_offprjjquota: 934 ret = f2fs_clear_qf_name(sb, PRJQUOTA); 935 if (ret) 936 return ret; 937 break; 938 case Opt_jqfmt_vfsold: 939 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD; 940 break; 941 case Opt_jqfmt_vfsv0: 942 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0; 943 break; 944 case Opt_jqfmt_vfsv1: 945 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1; 946 break; 947 case Opt_noquota: 948 clear_opt(sbi, QUOTA); 949 clear_opt(sbi, USRQUOTA); 950 clear_opt(sbi, GRPQUOTA); 951 clear_opt(sbi, PRJQUOTA); 952 break; 953 #else 954 case Opt_quota: 955 case Opt_usrquota: 956 case Opt_grpquota: 957 case Opt_prjquota: 958 case Opt_usrjquota: 959 case Opt_grpjquota: 960 case Opt_prjjquota: 961 case Opt_offusrjquota: 962 case Opt_offgrpjquota: 963 case Opt_offprjjquota: 964 case Opt_jqfmt_vfsold: 965 case Opt_jqfmt_vfsv0: 966 case Opt_jqfmt_vfsv1: 967 case Opt_noquota: 968 f2fs_info(sbi, "quota operations not supported"); 969 break; 970 #endif 971 case Opt_alloc: 972 name = match_strdup(&args[0]); 973 if (!name) 974 return -ENOMEM; 975 976 if (!strcmp(name, "default")) { 977 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT; 978 } else if (!strcmp(name, "reuse")) { 979 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE; 980 } else { 981 kfree(name); 982 return -EINVAL; 983 } 984 kfree(name); 985 break; 986 case Opt_fsync: 987 name = match_strdup(&args[0]); 988 if (!name) 989 return -ENOMEM; 990 if (!strcmp(name, "posix")) { 991 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX; 992 } else if (!strcmp(name, "strict")) { 993 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT; 994 } else if (!strcmp(name, "nobarrier")) { 995 F2FS_OPTION(sbi).fsync_mode = 996 FSYNC_MODE_NOBARRIER; 997 } else { 998 kfree(name); 999 return -EINVAL; 1000 } 1001 kfree(name); 1002 break; 1003 case Opt_test_dummy_encryption: 1004 ret = f2fs_set_test_dummy_encryption(sb, p, &args[0], 1005 is_remount); 1006 if (ret) 1007 return ret; 1008 break; 1009 case Opt_inlinecrypt: 1010 #ifdef CONFIG_FS_ENCRYPTION_INLINE_CRYPT 1011 sb->s_flags |= SB_INLINECRYPT; 1012 #else 1013 f2fs_info(sbi, "inline encryption not supported"); 1014 #endif 1015 break; 1016 case Opt_checkpoint_disable_cap_perc: 1017 if (args->from && match_int(args, &arg)) 1018 return -EINVAL; 1019 if (arg < 0 || arg > 100) 1020 return -EINVAL; 1021 F2FS_OPTION(sbi).unusable_cap_perc = arg; 1022 set_opt(sbi, DISABLE_CHECKPOINT); 1023 break; 1024 case Opt_checkpoint_disable_cap: 1025 if (args->from && match_int(args, &arg)) 1026 return -EINVAL; 1027 F2FS_OPTION(sbi).unusable_cap = arg; 1028 set_opt(sbi, DISABLE_CHECKPOINT); 1029 break; 1030 case Opt_checkpoint_disable: 1031 set_opt(sbi, DISABLE_CHECKPOINT); 1032 break; 1033 case Opt_checkpoint_enable: 1034 clear_opt(sbi, DISABLE_CHECKPOINT); 1035 break; 1036 case Opt_checkpoint_merge: 1037 set_opt(sbi, MERGE_CHECKPOINT); 1038 break; 1039 case Opt_nocheckpoint_merge: 1040 clear_opt(sbi, MERGE_CHECKPOINT); 1041 break; 1042 #ifdef CONFIG_F2FS_FS_COMPRESSION 1043 case Opt_compress_algorithm: 1044 if (!f2fs_sb_has_compression(sbi)) { 1045 f2fs_info(sbi, "Image doesn't support compression"); 1046 break; 1047 } 1048 name = match_strdup(&args[0]); 1049 if (!name) 1050 return -ENOMEM; 1051 if (!strcmp(name, "lzo")) { 1052 #ifdef CONFIG_F2FS_FS_LZO 1053 F2FS_OPTION(sbi).compress_level = 0; 1054 F2FS_OPTION(sbi).compress_algorithm = 1055 COMPRESS_LZO; 1056 #else 1057 f2fs_info(sbi, "kernel doesn't support lzo compression"); 1058 #endif 1059 } else if (!strncmp(name, "lz4", 3)) { 1060 #ifdef CONFIG_F2FS_FS_LZ4 1061 ret = f2fs_set_lz4hc_level(sbi, name); 1062 if (ret) { 1063 kfree(name); 1064 return -EINVAL; 1065 } 1066 F2FS_OPTION(sbi).compress_algorithm = 1067 COMPRESS_LZ4; 1068 #else 1069 f2fs_info(sbi, "kernel doesn't support lz4 compression"); 1070 #endif 1071 } else if (!strncmp(name, "zstd", 4)) { 1072 #ifdef CONFIG_F2FS_FS_ZSTD 1073 ret = f2fs_set_zstd_level(sbi, name); 1074 if (ret) { 1075 kfree(name); 1076 return -EINVAL; 1077 } 1078 F2FS_OPTION(sbi).compress_algorithm = 1079 COMPRESS_ZSTD; 1080 #else 1081 f2fs_info(sbi, "kernel doesn't support zstd compression"); 1082 #endif 1083 } else if (!strcmp(name, "lzo-rle")) { 1084 #ifdef CONFIG_F2FS_FS_LZORLE 1085 F2FS_OPTION(sbi).compress_level = 0; 1086 F2FS_OPTION(sbi).compress_algorithm = 1087 COMPRESS_LZORLE; 1088 #else 1089 f2fs_info(sbi, "kernel doesn't support lzorle compression"); 1090 #endif 1091 } else { 1092 kfree(name); 1093 return -EINVAL; 1094 } 1095 kfree(name); 1096 break; 1097 case Opt_compress_log_size: 1098 if (!f2fs_sb_has_compression(sbi)) { 1099 f2fs_info(sbi, "Image doesn't support compression"); 1100 break; 1101 } 1102 if (args->from && match_int(args, &arg)) 1103 return -EINVAL; 1104 if (arg < MIN_COMPRESS_LOG_SIZE || 1105 arg > MAX_COMPRESS_LOG_SIZE) { 1106 f2fs_err(sbi, 1107 "Compress cluster log size is out of range"); 1108 return -EINVAL; 1109 } 1110 F2FS_OPTION(sbi).compress_log_size = arg; 1111 break; 1112 case Opt_compress_extension: 1113 if (!f2fs_sb_has_compression(sbi)) { 1114 f2fs_info(sbi, "Image doesn't support compression"); 1115 break; 1116 } 1117 name = match_strdup(&args[0]); 1118 if (!name) 1119 return -ENOMEM; 1120 1121 ext = F2FS_OPTION(sbi).extensions; 1122 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt; 1123 1124 if (strlen(name) >= F2FS_EXTENSION_LEN || 1125 ext_cnt >= COMPRESS_EXT_NUM) { 1126 f2fs_err(sbi, 1127 "invalid extension length/number"); 1128 kfree(name); 1129 return -EINVAL; 1130 } 1131 1132 if (is_compress_extension_exist(sbi, name, true)) { 1133 kfree(name); 1134 break; 1135 } 1136 1137 strcpy(ext[ext_cnt], name); 1138 F2FS_OPTION(sbi).compress_ext_cnt++; 1139 kfree(name); 1140 break; 1141 case Opt_nocompress_extension: 1142 if (!f2fs_sb_has_compression(sbi)) { 1143 f2fs_info(sbi, "Image doesn't support compression"); 1144 break; 1145 } 1146 name = match_strdup(&args[0]); 1147 if (!name) 1148 return -ENOMEM; 1149 1150 noext = F2FS_OPTION(sbi).noextensions; 1151 noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt; 1152 1153 if (strlen(name) >= F2FS_EXTENSION_LEN || 1154 noext_cnt >= COMPRESS_EXT_NUM) { 1155 f2fs_err(sbi, 1156 "invalid extension length/number"); 1157 kfree(name); 1158 return -EINVAL; 1159 } 1160 1161 if (is_compress_extension_exist(sbi, name, false)) { 1162 kfree(name); 1163 break; 1164 } 1165 1166 strcpy(noext[noext_cnt], name); 1167 F2FS_OPTION(sbi).nocompress_ext_cnt++; 1168 kfree(name); 1169 break; 1170 case Opt_compress_chksum: 1171 if (!f2fs_sb_has_compression(sbi)) { 1172 f2fs_info(sbi, "Image doesn't support compression"); 1173 break; 1174 } 1175 F2FS_OPTION(sbi).compress_chksum = true; 1176 break; 1177 case Opt_compress_mode: 1178 if (!f2fs_sb_has_compression(sbi)) { 1179 f2fs_info(sbi, "Image doesn't support compression"); 1180 break; 1181 } 1182 name = match_strdup(&args[0]); 1183 if (!name) 1184 return -ENOMEM; 1185 if (!strcmp(name, "fs")) { 1186 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS; 1187 } else if (!strcmp(name, "user")) { 1188 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_USER; 1189 } else { 1190 kfree(name); 1191 return -EINVAL; 1192 } 1193 kfree(name); 1194 break; 1195 case Opt_compress_cache: 1196 if (!f2fs_sb_has_compression(sbi)) { 1197 f2fs_info(sbi, "Image doesn't support compression"); 1198 break; 1199 } 1200 set_opt(sbi, COMPRESS_CACHE); 1201 break; 1202 #else 1203 case Opt_compress_algorithm: 1204 case Opt_compress_log_size: 1205 case Opt_compress_extension: 1206 case Opt_nocompress_extension: 1207 case Opt_compress_chksum: 1208 case Opt_compress_mode: 1209 case Opt_compress_cache: 1210 f2fs_info(sbi, "compression options not supported"); 1211 break; 1212 #endif 1213 case Opt_atgc: 1214 set_opt(sbi, ATGC); 1215 break; 1216 case Opt_gc_merge: 1217 set_opt(sbi, GC_MERGE); 1218 break; 1219 case Opt_nogc_merge: 1220 clear_opt(sbi, GC_MERGE); 1221 break; 1222 case Opt_discard_unit: 1223 name = match_strdup(&args[0]); 1224 if (!name) 1225 return -ENOMEM; 1226 if (!strcmp(name, "block")) { 1227 F2FS_OPTION(sbi).discard_unit = 1228 DISCARD_UNIT_BLOCK; 1229 } else if (!strcmp(name, "segment")) { 1230 F2FS_OPTION(sbi).discard_unit = 1231 DISCARD_UNIT_SEGMENT; 1232 } else if (!strcmp(name, "section")) { 1233 F2FS_OPTION(sbi).discard_unit = 1234 DISCARD_UNIT_SECTION; 1235 } else { 1236 kfree(name); 1237 return -EINVAL; 1238 } 1239 kfree(name); 1240 break; 1241 case Opt_memory_mode: 1242 name = match_strdup(&args[0]); 1243 if (!name) 1244 return -ENOMEM; 1245 if (!strcmp(name, "normal")) { 1246 F2FS_OPTION(sbi).memory_mode = 1247 MEMORY_MODE_NORMAL; 1248 } else if (!strcmp(name, "low")) { 1249 F2FS_OPTION(sbi).memory_mode = 1250 MEMORY_MODE_LOW; 1251 } else { 1252 kfree(name); 1253 return -EINVAL; 1254 } 1255 kfree(name); 1256 break; 1257 case Opt_age_extent_cache: 1258 set_opt(sbi, AGE_EXTENT_CACHE); 1259 break; 1260 case Opt_errors: 1261 name = match_strdup(&args[0]); 1262 if (!name) 1263 return -ENOMEM; 1264 if (!strcmp(name, "remount-ro")) { 1265 F2FS_OPTION(sbi).errors = 1266 MOUNT_ERRORS_READONLY; 1267 } else if (!strcmp(name, "continue")) { 1268 F2FS_OPTION(sbi).errors = 1269 MOUNT_ERRORS_CONTINUE; 1270 } else if (!strcmp(name, "panic")) { 1271 F2FS_OPTION(sbi).errors = 1272 MOUNT_ERRORS_PANIC; 1273 } else { 1274 kfree(name); 1275 return -EINVAL; 1276 } 1277 kfree(name); 1278 break; 1279 default: 1280 f2fs_err(sbi, "Unrecognized mount option \"%s\" or missing value", 1281 p); 1282 return -EINVAL; 1283 } 1284 } 1285 default_check: 1286 #ifdef CONFIG_QUOTA 1287 if (f2fs_check_quota_options(sbi)) 1288 return -EINVAL; 1289 #else 1290 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sbi->sb)) { 1291 f2fs_info(sbi, "Filesystem with quota feature cannot be mounted RDWR without CONFIG_QUOTA"); 1292 return -EINVAL; 1293 } 1294 if (f2fs_sb_has_project_quota(sbi) && !f2fs_readonly(sbi->sb)) { 1295 f2fs_err(sbi, "Filesystem with project quota feature cannot be mounted RDWR without CONFIG_QUOTA"); 1296 return -EINVAL; 1297 } 1298 #endif 1299 #if !IS_ENABLED(CONFIG_UNICODE) 1300 if (f2fs_sb_has_casefold(sbi)) { 1301 f2fs_err(sbi, 1302 "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE"); 1303 return -EINVAL; 1304 } 1305 #endif 1306 /* 1307 * The BLKZONED feature indicates that the drive was formatted with 1308 * zone alignment optimization. This is optional for host-aware 1309 * devices, but mandatory for host-managed zoned block devices. 1310 */ 1311 if (f2fs_sb_has_blkzoned(sbi)) { 1312 #ifdef CONFIG_BLK_DEV_ZONED 1313 if (F2FS_OPTION(sbi).discard_unit != 1314 DISCARD_UNIT_SECTION) { 1315 f2fs_info(sbi, "Zoned block device doesn't need small discard, set discard_unit=section by default"); 1316 F2FS_OPTION(sbi).discard_unit = 1317 DISCARD_UNIT_SECTION; 1318 } 1319 1320 if (F2FS_OPTION(sbi).fs_mode != FS_MODE_LFS) { 1321 f2fs_info(sbi, "Only lfs mode is allowed with zoned block device feature"); 1322 return -EINVAL; 1323 } 1324 #else 1325 f2fs_err(sbi, "Zoned block device support is not enabled"); 1326 return -EINVAL; 1327 #endif 1328 } 1329 1330 #ifdef CONFIG_F2FS_FS_COMPRESSION 1331 if (f2fs_test_compress_extension(sbi)) { 1332 f2fs_err(sbi, "invalid compress or nocompress extension"); 1333 return -EINVAL; 1334 } 1335 #endif 1336 1337 if (test_opt(sbi, INLINE_XATTR_SIZE)) { 1338 int min_size, max_size; 1339 1340 if (!f2fs_sb_has_extra_attr(sbi) || 1341 !f2fs_sb_has_flexible_inline_xattr(sbi)) { 1342 f2fs_err(sbi, "extra_attr or flexible_inline_xattr feature is off"); 1343 return -EINVAL; 1344 } 1345 if (!test_opt(sbi, INLINE_XATTR)) { 1346 f2fs_err(sbi, "inline_xattr_size option should be set with inline_xattr option"); 1347 return -EINVAL; 1348 } 1349 1350 min_size = MIN_INLINE_XATTR_SIZE; 1351 max_size = MAX_INLINE_XATTR_SIZE; 1352 1353 if (F2FS_OPTION(sbi).inline_xattr_size < min_size || 1354 F2FS_OPTION(sbi).inline_xattr_size > max_size) { 1355 f2fs_err(sbi, "inline xattr size is out of range: %d ~ %d", 1356 min_size, max_size); 1357 return -EINVAL; 1358 } 1359 } 1360 1361 if (test_opt(sbi, DISABLE_CHECKPOINT) && f2fs_lfs_mode(sbi)) { 1362 f2fs_err(sbi, "LFS is not compatible with checkpoint=disable"); 1363 return -EINVAL; 1364 } 1365 1366 if (test_opt(sbi, ATGC) && f2fs_lfs_mode(sbi)) { 1367 f2fs_err(sbi, "LFS is not compatible with ATGC"); 1368 return -EINVAL; 1369 } 1370 1371 if (f2fs_is_readonly(sbi) && test_opt(sbi, FLUSH_MERGE)) { 1372 f2fs_err(sbi, "FLUSH_MERGE not compatible with readonly mode"); 1373 return -EINVAL; 1374 } 1375 1376 if (f2fs_sb_has_readonly(sbi) && !f2fs_readonly(sbi->sb)) { 1377 f2fs_err(sbi, "Allow to mount readonly mode only"); 1378 return -EROFS; 1379 } 1380 return 0; 1381 } 1382 1383 static struct inode *f2fs_alloc_inode(struct super_block *sb) 1384 { 1385 struct f2fs_inode_info *fi; 1386 1387 if (time_to_inject(F2FS_SB(sb), FAULT_SLAB_ALLOC)) 1388 return NULL; 1389 1390 fi = alloc_inode_sb(sb, f2fs_inode_cachep, GFP_F2FS_ZERO); 1391 if (!fi) 1392 return NULL; 1393 1394 init_once((void *) fi); 1395 1396 /* Initialize f2fs-specific inode info */ 1397 atomic_set(&fi->dirty_pages, 0); 1398 atomic_set(&fi->i_compr_blocks, 0); 1399 init_f2fs_rwsem(&fi->i_sem); 1400 spin_lock_init(&fi->i_size_lock); 1401 INIT_LIST_HEAD(&fi->dirty_list); 1402 INIT_LIST_HEAD(&fi->gdirty_list); 1403 init_f2fs_rwsem(&fi->i_gc_rwsem[READ]); 1404 init_f2fs_rwsem(&fi->i_gc_rwsem[WRITE]); 1405 init_f2fs_rwsem(&fi->i_xattr_sem); 1406 1407 /* Will be used by directory only */ 1408 fi->i_dir_level = F2FS_SB(sb)->dir_level; 1409 1410 return &fi->vfs_inode; 1411 } 1412 1413 static int f2fs_drop_inode(struct inode *inode) 1414 { 1415 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1416 int ret; 1417 1418 /* 1419 * during filesystem shutdown, if checkpoint is disabled, 1420 * drop useless meta/node dirty pages. 1421 */ 1422 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) { 1423 if (inode->i_ino == F2FS_NODE_INO(sbi) || 1424 inode->i_ino == F2FS_META_INO(sbi)) { 1425 trace_f2fs_drop_inode(inode, 1); 1426 return 1; 1427 } 1428 } 1429 1430 /* 1431 * This is to avoid a deadlock condition like below. 1432 * writeback_single_inode(inode) 1433 * - f2fs_write_data_page 1434 * - f2fs_gc -> iput -> evict 1435 * - inode_wait_for_writeback(inode) 1436 */ 1437 if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) { 1438 if (!inode->i_nlink && !is_bad_inode(inode)) { 1439 /* to avoid evict_inode call simultaneously */ 1440 atomic_inc(&inode->i_count); 1441 spin_unlock(&inode->i_lock); 1442 1443 /* should remain fi->extent_tree for writepage */ 1444 f2fs_destroy_extent_node(inode); 1445 1446 sb_start_intwrite(inode->i_sb); 1447 f2fs_i_size_write(inode, 0); 1448 1449 f2fs_submit_merged_write_cond(F2FS_I_SB(inode), 1450 inode, NULL, 0, DATA); 1451 truncate_inode_pages_final(inode->i_mapping); 1452 1453 if (F2FS_HAS_BLOCKS(inode)) 1454 f2fs_truncate(inode); 1455 1456 sb_end_intwrite(inode->i_sb); 1457 1458 spin_lock(&inode->i_lock); 1459 atomic_dec(&inode->i_count); 1460 } 1461 trace_f2fs_drop_inode(inode, 0); 1462 return 0; 1463 } 1464 ret = generic_drop_inode(inode); 1465 if (!ret) 1466 ret = fscrypt_drop_inode(inode); 1467 trace_f2fs_drop_inode(inode, ret); 1468 return ret; 1469 } 1470 1471 int f2fs_inode_dirtied(struct inode *inode, bool sync) 1472 { 1473 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1474 int ret = 0; 1475 1476 spin_lock(&sbi->inode_lock[DIRTY_META]); 1477 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) { 1478 ret = 1; 1479 } else { 1480 set_inode_flag(inode, FI_DIRTY_INODE); 1481 stat_inc_dirty_inode(sbi, DIRTY_META); 1482 } 1483 if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) { 1484 list_add_tail(&F2FS_I(inode)->gdirty_list, 1485 &sbi->inode_list[DIRTY_META]); 1486 inc_page_count(sbi, F2FS_DIRTY_IMETA); 1487 } 1488 spin_unlock(&sbi->inode_lock[DIRTY_META]); 1489 return ret; 1490 } 1491 1492 void f2fs_inode_synced(struct inode *inode) 1493 { 1494 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1495 1496 spin_lock(&sbi->inode_lock[DIRTY_META]); 1497 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) { 1498 spin_unlock(&sbi->inode_lock[DIRTY_META]); 1499 return; 1500 } 1501 if (!list_empty(&F2FS_I(inode)->gdirty_list)) { 1502 list_del_init(&F2FS_I(inode)->gdirty_list); 1503 dec_page_count(sbi, F2FS_DIRTY_IMETA); 1504 } 1505 clear_inode_flag(inode, FI_DIRTY_INODE); 1506 clear_inode_flag(inode, FI_AUTO_RECOVER); 1507 stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META); 1508 spin_unlock(&sbi->inode_lock[DIRTY_META]); 1509 } 1510 1511 /* 1512 * f2fs_dirty_inode() is called from __mark_inode_dirty() 1513 * 1514 * We should call set_dirty_inode to write the dirty inode through write_inode. 1515 */ 1516 static void f2fs_dirty_inode(struct inode *inode, int flags) 1517 { 1518 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1519 1520 if (inode->i_ino == F2FS_NODE_INO(sbi) || 1521 inode->i_ino == F2FS_META_INO(sbi)) 1522 return; 1523 1524 if (is_inode_flag_set(inode, FI_AUTO_RECOVER)) 1525 clear_inode_flag(inode, FI_AUTO_RECOVER); 1526 1527 f2fs_inode_dirtied(inode, false); 1528 } 1529 1530 static void f2fs_free_inode(struct inode *inode) 1531 { 1532 fscrypt_free_inode(inode); 1533 kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode)); 1534 } 1535 1536 static void destroy_percpu_info(struct f2fs_sb_info *sbi) 1537 { 1538 percpu_counter_destroy(&sbi->total_valid_inode_count); 1539 percpu_counter_destroy(&sbi->rf_node_block_count); 1540 percpu_counter_destroy(&sbi->alloc_valid_block_count); 1541 } 1542 1543 static void destroy_device_list(struct f2fs_sb_info *sbi) 1544 { 1545 int i; 1546 1547 for (i = 0; i < sbi->s_ndevs; i++) { 1548 if (i > 0) 1549 blkdev_put(FDEV(i).bdev, sbi->sb); 1550 #ifdef CONFIG_BLK_DEV_ZONED 1551 kvfree(FDEV(i).blkz_seq); 1552 #endif 1553 } 1554 kvfree(sbi->devs); 1555 } 1556 1557 static void f2fs_put_super(struct super_block *sb) 1558 { 1559 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1560 int i; 1561 int err = 0; 1562 bool done; 1563 1564 /* unregister procfs/sysfs entries in advance to avoid race case */ 1565 f2fs_unregister_sysfs(sbi); 1566 1567 f2fs_quota_off_umount(sb); 1568 1569 /* prevent remaining shrinker jobs */ 1570 mutex_lock(&sbi->umount_mutex); 1571 1572 /* 1573 * flush all issued checkpoints and stop checkpoint issue thread. 1574 * after then, all checkpoints should be done by each process context. 1575 */ 1576 f2fs_stop_ckpt_thread(sbi); 1577 1578 /* 1579 * We don't need to do checkpoint when superblock is clean. 1580 * But, the previous checkpoint was not done by umount, it needs to do 1581 * clean checkpoint again. 1582 */ 1583 if ((is_sbi_flag_set(sbi, SBI_IS_DIRTY) || 1584 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))) { 1585 struct cp_control cpc = { 1586 .reason = CP_UMOUNT, 1587 }; 1588 stat_inc_cp_call_count(sbi, TOTAL_CALL); 1589 err = f2fs_write_checkpoint(sbi, &cpc); 1590 } 1591 1592 /* be sure to wait for any on-going discard commands */ 1593 done = f2fs_issue_discard_timeout(sbi); 1594 if (f2fs_realtime_discard_enable(sbi) && !sbi->discard_blks && done) { 1595 struct cp_control cpc = { 1596 .reason = CP_UMOUNT | CP_TRIMMED, 1597 }; 1598 stat_inc_cp_call_count(sbi, TOTAL_CALL); 1599 err = f2fs_write_checkpoint(sbi, &cpc); 1600 } 1601 1602 /* 1603 * normally superblock is clean, so we need to release this. 1604 * In addition, EIO will skip do checkpoint, we need this as well. 1605 */ 1606 f2fs_release_ino_entry(sbi, true); 1607 1608 f2fs_leave_shrinker(sbi); 1609 mutex_unlock(&sbi->umount_mutex); 1610 1611 /* our cp_error case, we can wait for any writeback page */ 1612 f2fs_flush_merged_writes(sbi); 1613 1614 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA); 1615 1616 if (err || f2fs_cp_error(sbi)) { 1617 truncate_inode_pages_final(NODE_MAPPING(sbi)); 1618 truncate_inode_pages_final(META_MAPPING(sbi)); 1619 } 1620 1621 for (i = 0; i < NR_COUNT_TYPE; i++) { 1622 if (!get_pages(sbi, i)) 1623 continue; 1624 f2fs_err(sbi, "detect filesystem reference count leak during " 1625 "umount, type: %d, count: %lld", i, get_pages(sbi, i)); 1626 f2fs_bug_on(sbi, 1); 1627 } 1628 1629 f2fs_bug_on(sbi, sbi->fsync_node_num); 1630 1631 f2fs_destroy_compress_inode(sbi); 1632 1633 iput(sbi->node_inode); 1634 sbi->node_inode = NULL; 1635 1636 iput(sbi->meta_inode); 1637 sbi->meta_inode = NULL; 1638 1639 /* 1640 * iput() can update stat information, if f2fs_write_checkpoint() 1641 * above failed with error. 1642 */ 1643 f2fs_destroy_stats(sbi); 1644 1645 /* destroy f2fs internal modules */ 1646 f2fs_destroy_node_manager(sbi); 1647 f2fs_destroy_segment_manager(sbi); 1648 1649 /* flush s_error_work before sbi destroy */ 1650 flush_work(&sbi->s_error_work); 1651 1652 f2fs_destroy_post_read_wq(sbi); 1653 1654 kvfree(sbi->ckpt); 1655 1656 sb->s_fs_info = NULL; 1657 if (sbi->s_chksum_driver) 1658 crypto_free_shash(sbi->s_chksum_driver); 1659 kfree(sbi->raw_super); 1660 1661 destroy_device_list(sbi); 1662 f2fs_destroy_page_array_cache(sbi); 1663 f2fs_destroy_xattr_caches(sbi); 1664 #ifdef CONFIG_QUOTA 1665 for (i = 0; i < MAXQUOTAS; i++) 1666 kfree(F2FS_OPTION(sbi).s_qf_names[i]); 1667 #endif 1668 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy); 1669 destroy_percpu_info(sbi); 1670 f2fs_destroy_iostat(sbi); 1671 for (i = 0; i < NR_PAGE_TYPE; i++) 1672 kvfree(sbi->write_io[i]); 1673 #if IS_ENABLED(CONFIG_UNICODE) 1674 utf8_unload(sb->s_encoding); 1675 #endif 1676 kfree(sbi); 1677 } 1678 1679 int f2fs_sync_fs(struct super_block *sb, int sync) 1680 { 1681 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1682 int err = 0; 1683 1684 if (unlikely(f2fs_cp_error(sbi))) 1685 return 0; 1686 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) 1687 return 0; 1688 1689 trace_f2fs_sync_fs(sb, sync); 1690 1691 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 1692 return -EAGAIN; 1693 1694 if (sync) { 1695 stat_inc_cp_call_count(sbi, TOTAL_CALL); 1696 err = f2fs_issue_checkpoint(sbi); 1697 } 1698 1699 return err; 1700 } 1701 1702 static int f2fs_freeze(struct super_block *sb) 1703 { 1704 if (f2fs_readonly(sb)) 1705 return 0; 1706 1707 /* IO error happened before */ 1708 if (unlikely(f2fs_cp_error(F2FS_SB(sb)))) 1709 return -EIO; 1710 1711 /* must be clean, since sync_filesystem() was already called */ 1712 if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY)) 1713 return -EINVAL; 1714 1715 /* Let's flush checkpoints and stop the thread. */ 1716 f2fs_flush_ckpt_thread(F2FS_SB(sb)); 1717 1718 /* to avoid deadlock on f2fs_evict_inode->SB_FREEZE_FS */ 1719 set_sbi_flag(F2FS_SB(sb), SBI_IS_FREEZING); 1720 return 0; 1721 } 1722 1723 static int f2fs_unfreeze(struct super_block *sb) 1724 { 1725 clear_sbi_flag(F2FS_SB(sb), SBI_IS_FREEZING); 1726 return 0; 1727 } 1728 1729 #ifdef CONFIG_QUOTA 1730 static int f2fs_statfs_project(struct super_block *sb, 1731 kprojid_t projid, struct kstatfs *buf) 1732 { 1733 struct kqid qid; 1734 struct dquot *dquot; 1735 u64 limit; 1736 u64 curblock; 1737 1738 qid = make_kqid_projid(projid); 1739 dquot = dqget(sb, qid); 1740 if (IS_ERR(dquot)) 1741 return PTR_ERR(dquot); 1742 spin_lock(&dquot->dq_dqb_lock); 1743 1744 limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit, 1745 dquot->dq_dqb.dqb_bhardlimit); 1746 if (limit) 1747 limit >>= sb->s_blocksize_bits; 1748 1749 if (limit && buf->f_blocks > limit) { 1750 curblock = (dquot->dq_dqb.dqb_curspace + 1751 dquot->dq_dqb.dqb_rsvspace) >> sb->s_blocksize_bits; 1752 buf->f_blocks = limit; 1753 buf->f_bfree = buf->f_bavail = 1754 (buf->f_blocks > curblock) ? 1755 (buf->f_blocks - curblock) : 0; 1756 } 1757 1758 limit = min_not_zero(dquot->dq_dqb.dqb_isoftlimit, 1759 dquot->dq_dqb.dqb_ihardlimit); 1760 1761 if (limit && buf->f_files > limit) { 1762 buf->f_files = limit; 1763 buf->f_ffree = 1764 (buf->f_files > dquot->dq_dqb.dqb_curinodes) ? 1765 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0; 1766 } 1767 1768 spin_unlock(&dquot->dq_dqb_lock); 1769 dqput(dquot); 1770 return 0; 1771 } 1772 #endif 1773 1774 static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf) 1775 { 1776 struct super_block *sb = dentry->d_sb; 1777 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1778 u64 id = huge_encode_dev(sb->s_bdev->bd_dev); 1779 block_t total_count, user_block_count, start_count; 1780 u64 avail_node_count; 1781 unsigned int total_valid_node_count; 1782 1783 total_count = le64_to_cpu(sbi->raw_super->block_count); 1784 start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr); 1785 buf->f_type = F2FS_SUPER_MAGIC; 1786 buf->f_bsize = sbi->blocksize; 1787 1788 buf->f_blocks = total_count - start_count; 1789 1790 spin_lock(&sbi->stat_lock); 1791 1792 user_block_count = sbi->user_block_count; 1793 total_valid_node_count = valid_node_count(sbi); 1794 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM; 1795 buf->f_bfree = user_block_count - valid_user_blocks(sbi) - 1796 sbi->current_reserved_blocks; 1797 1798 if (unlikely(buf->f_bfree <= sbi->unusable_block_count)) 1799 buf->f_bfree = 0; 1800 else 1801 buf->f_bfree -= sbi->unusable_block_count; 1802 spin_unlock(&sbi->stat_lock); 1803 1804 if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks) 1805 buf->f_bavail = buf->f_bfree - 1806 F2FS_OPTION(sbi).root_reserved_blocks; 1807 else 1808 buf->f_bavail = 0; 1809 1810 if (avail_node_count > user_block_count) { 1811 buf->f_files = user_block_count; 1812 buf->f_ffree = buf->f_bavail; 1813 } else { 1814 buf->f_files = avail_node_count; 1815 buf->f_ffree = min(avail_node_count - total_valid_node_count, 1816 buf->f_bavail); 1817 } 1818 1819 buf->f_namelen = F2FS_NAME_LEN; 1820 buf->f_fsid = u64_to_fsid(id); 1821 1822 #ifdef CONFIG_QUOTA 1823 if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) && 1824 sb_has_quota_limits_enabled(sb, PRJQUOTA)) { 1825 f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf); 1826 } 1827 #endif 1828 return 0; 1829 } 1830 1831 static inline void f2fs_show_quota_options(struct seq_file *seq, 1832 struct super_block *sb) 1833 { 1834 #ifdef CONFIG_QUOTA 1835 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1836 1837 if (F2FS_OPTION(sbi).s_jquota_fmt) { 1838 char *fmtname = ""; 1839 1840 switch (F2FS_OPTION(sbi).s_jquota_fmt) { 1841 case QFMT_VFS_OLD: 1842 fmtname = "vfsold"; 1843 break; 1844 case QFMT_VFS_V0: 1845 fmtname = "vfsv0"; 1846 break; 1847 case QFMT_VFS_V1: 1848 fmtname = "vfsv1"; 1849 break; 1850 } 1851 seq_printf(seq, ",jqfmt=%s", fmtname); 1852 } 1853 1854 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA]) 1855 seq_show_option(seq, "usrjquota", 1856 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]); 1857 1858 if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]) 1859 seq_show_option(seq, "grpjquota", 1860 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]); 1861 1862 if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) 1863 seq_show_option(seq, "prjjquota", 1864 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]); 1865 #endif 1866 } 1867 1868 #ifdef CONFIG_F2FS_FS_COMPRESSION 1869 static inline void f2fs_show_compress_options(struct seq_file *seq, 1870 struct super_block *sb) 1871 { 1872 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1873 char *algtype = ""; 1874 int i; 1875 1876 if (!f2fs_sb_has_compression(sbi)) 1877 return; 1878 1879 switch (F2FS_OPTION(sbi).compress_algorithm) { 1880 case COMPRESS_LZO: 1881 algtype = "lzo"; 1882 break; 1883 case COMPRESS_LZ4: 1884 algtype = "lz4"; 1885 break; 1886 case COMPRESS_ZSTD: 1887 algtype = "zstd"; 1888 break; 1889 case COMPRESS_LZORLE: 1890 algtype = "lzo-rle"; 1891 break; 1892 } 1893 seq_printf(seq, ",compress_algorithm=%s", algtype); 1894 1895 if (F2FS_OPTION(sbi).compress_level) 1896 seq_printf(seq, ":%d", F2FS_OPTION(sbi).compress_level); 1897 1898 seq_printf(seq, ",compress_log_size=%u", 1899 F2FS_OPTION(sbi).compress_log_size); 1900 1901 for (i = 0; i < F2FS_OPTION(sbi).compress_ext_cnt; i++) { 1902 seq_printf(seq, ",compress_extension=%s", 1903 F2FS_OPTION(sbi).extensions[i]); 1904 } 1905 1906 for (i = 0; i < F2FS_OPTION(sbi).nocompress_ext_cnt; i++) { 1907 seq_printf(seq, ",nocompress_extension=%s", 1908 F2FS_OPTION(sbi).noextensions[i]); 1909 } 1910 1911 if (F2FS_OPTION(sbi).compress_chksum) 1912 seq_puts(seq, ",compress_chksum"); 1913 1914 if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_FS) 1915 seq_printf(seq, ",compress_mode=%s", "fs"); 1916 else if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_USER) 1917 seq_printf(seq, ",compress_mode=%s", "user"); 1918 1919 if (test_opt(sbi, COMPRESS_CACHE)) 1920 seq_puts(seq, ",compress_cache"); 1921 } 1922 #endif 1923 1924 static int f2fs_show_options(struct seq_file *seq, struct dentry *root) 1925 { 1926 struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb); 1927 1928 if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_SYNC) 1929 seq_printf(seq, ",background_gc=%s", "sync"); 1930 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_ON) 1931 seq_printf(seq, ",background_gc=%s", "on"); 1932 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF) 1933 seq_printf(seq, ",background_gc=%s", "off"); 1934 1935 if (test_opt(sbi, GC_MERGE)) 1936 seq_puts(seq, ",gc_merge"); 1937 else 1938 seq_puts(seq, ",nogc_merge"); 1939 1940 if (test_opt(sbi, DISABLE_ROLL_FORWARD)) 1941 seq_puts(seq, ",disable_roll_forward"); 1942 if (test_opt(sbi, NORECOVERY)) 1943 seq_puts(seq, ",norecovery"); 1944 if (test_opt(sbi, DISCARD)) { 1945 seq_puts(seq, ",discard"); 1946 if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_BLOCK) 1947 seq_printf(seq, ",discard_unit=%s", "block"); 1948 else if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SEGMENT) 1949 seq_printf(seq, ",discard_unit=%s", "segment"); 1950 else if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SECTION) 1951 seq_printf(seq, ",discard_unit=%s", "section"); 1952 } else { 1953 seq_puts(seq, ",nodiscard"); 1954 } 1955 #ifdef CONFIG_F2FS_FS_XATTR 1956 if (test_opt(sbi, XATTR_USER)) 1957 seq_puts(seq, ",user_xattr"); 1958 else 1959 seq_puts(seq, ",nouser_xattr"); 1960 if (test_opt(sbi, INLINE_XATTR)) 1961 seq_puts(seq, ",inline_xattr"); 1962 else 1963 seq_puts(seq, ",noinline_xattr"); 1964 if (test_opt(sbi, INLINE_XATTR_SIZE)) 1965 seq_printf(seq, ",inline_xattr_size=%u", 1966 F2FS_OPTION(sbi).inline_xattr_size); 1967 #endif 1968 #ifdef CONFIG_F2FS_FS_POSIX_ACL 1969 if (test_opt(sbi, POSIX_ACL)) 1970 seq_puts(seq, ",acl"); 1971 else 1972 seq_puts(seq, ",noacl"); 1973 #endif 1974 if (test_opt(sbi, DISABLE_EXT_IDENTIFY)) 1975 seq_puts(seq, ",disable_ext_identify"); 1976 if (test_opt(sbi, INLINE_DATA)) 1977 seq_puts(seq, ",inline_data"); 1978 else 1979 seq_puts(seq, ",noinline_data"); 1980 if (test_opt(sbi, INLINE_DENTRY)) 1981 seq_puts(seq, ",inline_dentry"); 1982 else 1983 seq_puts(seq, ",noinline_dentry"); 1984 if (test_opt(sbi, FLUSH_MERGE)) 1985 seq_puts(seq, ",flush_merge"); 1986 else 1987 seq_puts(seq, ",noflush_merge"); 1988 if (test_opt(sbi, NOBARRIER)) 1989 seq_puts(seq, ",nobarrier"); 1990 else 1991 seq_puts(seq, ",barrier"); 1992 if (test_opt(sbi, FASTBOOT)) 1993 seq_puts(seq, ",fastboot"); 1994 if (test_opt(sbi, READ_EXTENT_CACHE)) 1995 seq_puts(seq, ",extent_cache"); 1996 else 1997 seq_puts(seq, ",noextent_cache"); 1998 if (test_opt(sbi, AGE_EXTENT_CACHE)) 1999 seq_puts(seq, ",age_extent_cache"); 2000 if (test_opt(sbi, DATA_FLUSH)) 2001 seq_puts(seq, ",data_flush"); 2002 2003 seq_puts(seq, ",mode="); 2004 if (F2FS_OPTION(sbi).fs_mode == FS_MODE_ADAPTIVE) 2005 seq_puts(seq, "adaptive"); 2006 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_LFS) 2007 seq_puts(seq, "lfs"); 2008 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_SEG) 2009 seq_puts(seq, "fragment:segment"); 2010 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_BLK) 2011 seq_puts(seq, "fragment:block"); 2012 seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs); 2013 if (test_opt(sbi, RESERVE_ROOT)) 2014 seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u", 2015 F2FS_OPTION(sbi).root_reserved_blocks, 2016 from_kuid_munged(&init_user_ns, 2017 F2FS_OPTION(sbi).s_resuid), 2018 from_kgid_munged(&init_user_ns, 2019 F2FS_OPTION(sbi).s_resgid)); 2020 #ifdef CONFIG_F2FS_FAULT_INJECTION 2021 if (test_opt(sbi, FAULT_INJECTION)) { 2022 seq_printf(seq, ",fault_injection=%u", 2023 F2FS_OPTION(sbi).fault_info.inject_rate); 2024 seq_printf(seq, ",fault_type=%u", 2025 F2FS_OPTION(sbi).fault_info.inject_type); 2026 } 2027 #endif 2028 #ifdef CONFIG_QUOTA 2029 if (test_opt(sbi, QUOTA)) 2030 seq_puts(seq, ",quota"); 2031 if (test_opt(sbi, USRQUOTA)) 2032 seq_puts(seq, ",usrquota"); 2033 if (test_opt(sbi, GRPQUOTA)) 2034 seq_puts(seq, ",grpquota"); 2035 if (test_opt(sbi, PRJQUOTA)) 2036 seq_puts(seq, ",prjquota"); 2037 #endif 2038 f2fs_show_quota_options(seq, sbi->sb); 2039 2040 fscrypt_show_test_dummy_encryption(seq, ',', sbi->sb); 2041 2042 if (sbi->sb->s_flags & SB_INLINECRYPT) 2043 seq_puts(seq, ",inlinecrypt"); 2044 2045 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT) 2046 seq_printf(seq, ",alloc_mode=%s", "default"); 2047 else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE) 2048 seq_printf(seq, ",alloc_mode=%s", "reuse"); 2049 2050 if (test_opt(sbi, DISABLE_CHECKPOINT)) 2051 seq_printf(seq, ",checkpoint=disable:%u", 2052 F2FS_OPTION(sbi).unusable_cap); 2053 if (test_opt(sbi, MERGE_CHECKPOINT)) 2054 seq_puts(seq, ",checkpoint_merge"); 2055 else 2056 seq_puts(seq, ",nocheckpoint_merge"); 2057 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX) 2058 seq_printf(seq, ",fsync_mode=%s", "posix"); 2059 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) 2060 seq_printf(seq, ",fsync_mode=%s", "strict"); 2061 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER) 2062 seq_printf(seq, ",fsync_mode=%s", "nobarrier"); 2063 2064 #ifdef CONFIG_F2FS_FS_COMPRESSION 2065 f2fs_show_compress_options(seq, sbi->sb); 2066 #endif 2067 2068 if (test_opt(sbi, ATGC)) 2069 seq_puts(seq, ",atgc"); 2070 2071 if (F2FS_OPTION(sbi).memory_mode == MEMORY_MODE_NORMAL) 2072 seq_printf(seq, ",memory=%s", "normal"); 2073 else if (F2FS_OPTION(sbi).memory_mode == MEMORY_MODE_LOW) 2074 seq_printf(seq, ",memory=%s", "low"); 2075 2076 if (F2FS_OPTION(sbi).errors == MOUNT_ERRORS_READONLY) 2077 seq_printf(seq, ",errors=%s", "remount-ro"); 2078 else if (F2FS_OPTION(sbi).errors == MOUNT_ERRORS_CONTINUE) 2079 seq_printf(seq, ",errors=%s", "continue"); 2080 else if (F2FS_OPTION(sbi).errors == MOUNT_ERRORS_PANIC) 2081 seq_printf(seq, ",errors=%s", "panic"); 2082 2083 return 0; 2084 } 2085 2086 static void default_options(struct f2fs_sb_info *sbi, bool remount) 2087 { 2088 /* init some FS parameters */ 2089 if (!remount) { 2090 set_opt(sbi, READ_EXTENT_CACHE); 2091 clear_opt(sbi, DISABLE_CHECKPOINT); 2092 2093 if (f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) 2094 set_opt(sbi, DISCARD); 2095 2096 if (f2fs_sb_has_blkzoned(sbi)) 2097 F2FS_OPTION(sbi).discard_unit = DISCARD_UNIT_SECTION; 2098 else 2099 F2FS_OPTION(sbi).discard_unit = DISCARD_UNIT_BLOCK; 2100 } 2101 2102 if (f2fs_sb_has_readonly(sbi)) 2103 F2FS_OPTION(sbi).active_logs = NR_CURSEG_RO_TYPE; 2104 else 2105 F2FS_OPTION(sbi).active_logs = NR_CURSEG_PERSIST_TYPE; 2106 2107 F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS; 2108 if (le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_main) <= 2109 SMALL_VOLUME_SEGMENTS) 2110 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE; 2111 else 2112 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT; 2113 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX; 2114 F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID); 2115 F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID); 2116 if (f2fs_sb_has_compression(sbi)) { 2117 F2FS_OPTION(sbi).compress_algorithm = COMPRESS_LZ4; 2118 F2FS_OPTION(sbi).compress_log_size = MIN_COMPRESS_LOG_SIZE; 2119 F2FS_OPTION(sbi).compress_ext_cnt = 0; 2120 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS; 2121 } 2122 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON; 2123 F2FS_OPTION(sbi).memory_mode = MEMORY_MODE_NORMAL; 2124 F2FS_OPTION(sbi).errors = MOUNT_ERRORS_CONTINUE; 2125 2126 set_opt(sbi, INLINE_XATTR); 2127 set_opt(sbi, INLINE_DATA); 2128 set_opt(sbi, INLINE_DENTRY); 2129 set_opt(sbi, MERGE_CHECKPOINT); 2130 F2FS_OPTION(sbi).unusable_cap = 0; 2131 sbi->sb->s_flags |= SB_LAZYTIME; 2132 if (!f2fs_is_readonly(sbi)) 2133 set_opt(sbi, FLUSH_MERGE); 2134 if (f2fs_sb_has_blkzoned(sbi)) 2135 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS; 2136 else 2137 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE; 2138 2139 #ifdef CONFIG_F2FS_FS_XATTR 2140 set_opt(sbi, XATTR_USER); 2141 #endif 2142 #ifdef CONFIG_F2FS_FS_POSIX_ACL 2143 set_opt(sbi, POSIX_ACL); 2144 #endif 2145 2146 f2fs_build_fault_attr(sbi, 0, 0); 2147 } 2148 2149 #ifdef CONFIG_QUOTA 2150 static int f2fs_enable_quotas(struct super_block *sb); 2151 #endif 2152 2153 static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi) 2154 { 2155 unsigned int s_flags = sbi->sb->s_flags; 2156 struct cp_control cpc; 2157 unsigned int gc_mode = sbi->gc_mode; 2158 int err = 0; 2159 int ret; 2160 block_t unusable; 2161 2162 if (s_flags & SB_RDONLY) { 2163 f2fs_err(sbi, "checkpoint=disable on readonly fs"); 2164 return -EINVAL; 2165 } 2166 sbi->sb->s_flags |= SB_ACTIVE; 2167 2168 /* check if we need more GC first */ 2169 unusable = f2fs_get_unusable_blocks(sbi); 2170 if (!f2fs_disable_cp_again(sbi, unusable)) 2171 goto skip_gc; 2172 2173 f2fs_update_time(sbi, DISABLE_TIME); 2174 2175 sbi->gc_mode = GC_URGENT_HIGH; 2176 2177 while (!f2fs_time_over(sbi, DISABLE_TIME)) { 2178 struct f2fs_gc_control gc_control = { 2179 .victim_segno = NULL_SEGNO, 2180 .init_gc_type = FG_GC, 2181 .should_migrate_blocks = false, 2182 .err_gc_skipped = true, 2183 .nr_free_secs = 1 }; 2184 2185 f2fs_down_write(&sbi->gc_lock); 2186 stat_inc_gc_call_count(sbi, FOREGROUND); 2187 err = f2fs_gc(sbi, &gc_control); 2188 if (err == -ENODATA) { 2189 err = 0; 2190 break; 2191 } 2192 if (err && err != -EAGAIN) 2193 break; 2194 } 2195 2196 ret = sync_filesystem(sbi->sb); 2197 if (ret || err) { 2198 err = ret ? ret : err; 2199 goto restore_flag; 2200 } 2201 2202 unusable = f2fs_get_unusable_blocks(sbi); 2203 if (f2fs_disable_cp_again(sbi, unusable)) { 2204 err = -EAGAIN; 2205 goto restore_flag; 2206 } 2207 2208 skip_gc: 2209 f2fs_down_write(&sbi->gc_lock); 2210 cpc.reason = CP_PAUSE; 2211 set_sbi_flag(sbi, SBI_CP_DISABLED); 2212 stat_inc_cp_call_count(sbi, TOTAL_CALL); 2213 err = f2fs_write_checkpoint(sbi, &cpc); 2214 if (err) 2215 goto out_unlock; 2216 2217 spin_lock(&sbi->stat_lock); 2218 sbi->unusable_block_count = unusable; 2219 spin_unlock(&sbi->stat_lock); 2220 2221 out_unlock: 2222 f2fs_up_write(&sbi->gc_lock); 2223 restore_flag: 2224 sbi->gc_mode = gc_mode; 2225 sbi->sb->s_flags = s_flags; /* Restore SB_RDONLY status */ 2226 return err; 2227 } 2228 2229 static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi) 2230 { 2231 int retry = DEFAULT_RETRY_IO_COUNT; 2232 2233 /* we should flush all the data to keep data consistency */ 2234 do { 2235 sync_inodes_sb(sbi->sb); 2236 f2fs_io_schedule_timeout(DEFAULT_IO_TIMEOUT); 2237 } while (get_pages(sbi, F2FS_DIRTY_DATA) && retry--); 2238 2239 if (unlikely(retry < 0)) 2240 f2fs_warn(sbi, "checkpoint=enable has some unwritten data."); 2241 2242 f2fs_down_write(&sbi->gc_lock); 2243 f2fs_dirty_to_prefree(sbi); 2244 2245 clear_sbi_flag(sbi, SBI_CP_DISABLED); 2246 set_sbi_flag(sbi, SBI_IS_DIRTY); 2247 f2fs_up_write(&sbi->gc_lock); 2248 2249 f2fs_sync_fs(sbi->sb, 1); 2250 2251 /* Let's ensure there's no pending checkpoint anymore */ 2252 f2fs_flush_ckpt_thread(sbi); 2253 } 2254 2255 static int f2fs_remount(struct super_block *sb, int *flags, char *data) 2256 { 2257 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2258 struct f2fs_mount_info org_mount_opt; 2259 unsigned long old_sb_flags; 2260 int err; 2261 bool need_restart_gc = false, need_stop_gc = false; 2262 bool need_restart_ckpt = false, need_stop_ckpt = false; 2263 bool need_restart_flush = false, need_stop_flush = false; 2264 bool need_restart_discard = false, need_stop_discard = false; 2265 bool no_read_extent_cache = !test_opt(sbi, READ_EXTENT_CACHE); 2266 bool no_age_extent_cache = !test_opt(sbi, AGE_EXTENT_CACHE); 2267 bool enable_checkpoint = !test_opt(sbi, DISABLE_CHECKPOINT); 2268 bool no_atgc = !test_opt(sbi, ATGC); 2269 bool no_discard = !test_opt(sbi, DISCARD); 2270 bool no_compress_cache = !test_opt(sbi, COMPRESS_CACHE); 2271 bool block_unit_discard = f2fs_block_unit_discard(sbi); 2272 #ifdef CONFIG_QUOTA 2273 int i, j; 2274 #endif 2275 2276 /* 2277 * Save the old mount options in case we 2278 * need to restore them. 2279 */ 2280 org_mount_opt = sbi->mount_opt; 2281 old_sb_flags = sb->s_flags; 2282 2283 #ifdef CONFIG_QUOTA 2284 org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt; 2285 for (i = 0; i < MAXQUOTAS; i++) { 2286 if (F2FS_OPTION(sbi).s_qf_names[i]) { 2287 org_mount_opt.s_qf_names[i] = 2288 kstrdup(F2FS_OPTION(sbi).s_qf_names[i], 2289 GFP_KERNEL); 2290 if (!org_mount_opt.s_qf_names[i]) { 2291 for (j = 0; j < i; j++) 2292 kfree(org_mount_opt.s_qf_names[j]); 2293 return -ENOMEM; 2294 } 2295 } else { 2296 org_mount_opt.s_qf_names[i] = NULL; 2297 } 2298 } 2299 #endif 2300 2301 /* recover superblocks we couldn't write due to previous RO mount */ 2302 if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) { 2303 err = f2fs_commit_super(sbi, false); 2304 f2fs_info(sbi, "Try to recover all the superblocks, ret: %d", 2305 err); 2306 if (!err) 2307 clear_sbi_flag(sbi, SBI_NEED_SB_WRITE); 2308 } 2309 2310 default_options(sbi, true); 2311 2312 /* parse mount options */ 2313 err = parse_options(sb, data, true); 2314 if (err) 2315 goto restore_opts; 2316 2317 /* flush outstanding errors before changing fs state */ 2318 flush_work(&sbi->s_error_work); 2319 2320 /* 2321 * Previous and new state of filesystem is RO, 2322 * so skip checking GC and FLUSH_MERGE conditions. 2323 */ 2324 if (f2fs_readonly(sb) && (*flags & SB_RDONLY)) 2325 goto skip; 2326 2327 if (f2fs_dev_is_readonly(sbi) && !(*flags & SB_RDONLY)) { 2328 err = -EROFS; 2329 goto restore_opts; 2330 } 2331 2332 #ifdef CONFIG_QUOTA 2333 if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) { 2334 err = dquot_suspend(sb, -1); 2335 if (err < 0) 2336 goto restore_opts; 2337 } else if (f2fs_readonly(sb) && !(*flags & SB_RDONLY)) { 2338 /* dquot_resume needs RW */ 2339 sb->s_flags &= ~SB_RDONLY; 2340 if (sb_any_quota_suspended(sb)) { 2341 dquot_resume(sb, -1); 2342 } else if (f2fs_sb_has_quota_ino(sbi)) { 2343 err = f2fs_enable_quotas(sb); 2344 if (err) 2345 goto restore_opts; 2346 } 2347 } 2348 #endif 2349 if (f2fs_lfs_mode(sbi) && !IS_F2FS_IPU_DISABLE(sbi)) { 2350 err = -EINVAL; 2351 f2fs_warn(sbi, "LFS is not compatible with IPU"); 2352 goto restore_opts; 2353 } 2354 2355 /* disallow enable atgc dynamically */ 2356 if (no_atgc == !!test_opt(sbi, ATGC)) { 2357 err = -EINVAL; 2358 f2fs_warn(sbi, "switch atgc option is not allowed"); 2359 goto restore_opts; 2360 } 2361 2362 /* disallow enable/disable extent_cache dynamically */ 2363 if (no_read_extent_cache == !!test_opt(sbi, READ_EXTENT_CACHE)) { 2364 err = -EINVAL; 2365 f2fs_warn(sbi, "switch extent_cache option is not allowed"); 2366 goto restore_opts; 2367 } 2368 /* disallow enable/disable age extent_cache dynamically */ 2369 if (no_age_extent_cache == !!test_opt(sbi, AGE_EXTENT_CACHE)) { 2370 err = -EINVAL; 2371 f2fs_warn(sbi, "switch age_extent_cache option is not allowed"); 2372 goto restore_opts; 2373 } 2374 2375 if (no_compress_cache == !!test_opt(sbi, COMPRESS_CACHE)) { 2376 err = -EINVAL; 2377 f2fs_warn(sbi, "switch compress_cache option is not allowed"); 2378 goto restore_opts; 2379 } 2380 2381 if (block_unit_discard != f2fs_block_unit_discard(sbi)) { 2382 err = -EINVAL; 2383 f2fs_warn(sbi, "switch discard_unit option is not allowed"); 2384 goto restore_opts; 2385 } 2386 2387 if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) { 2388 err = -EINVAL; 2389 f2fs_warn(sbi, "disabling checkpoint not compatible with read-only"); 2390 goto restore_opts; 2391 } 2392 2393 /* 2394 * We stop the GC thread if FS is mounted as RO 2395 * or if background_gc = off is passed in mount 2396 * option. Also sync the filesystem. 2397 */ 2398 if ((*flags & SB_RDONLY) || 2399 (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF && 2400 !test_opt(sbi, GC_MERGE))) { 2401 if (sbi->gc_thread) { 2402 f2fs_stop_gc_thread(sbi); 2403 need_restart_gc = true; 2404 } 2405 } else if (!sbi->gc_thread) { 2406 err = f2fs_start_gc_thread(sbi); 2407 if (err) 2408 goto restore_opts; 2409 need_stop_gc = true; 2410 } 2411 2412 if (*flags & SB_RDONLY) { 2413 sync_inodes_sb(sb); 2414 2415 set_sbi_flag(sbi, SBI_IS_DIRTY); 2416 set_sbi_flag(sbi, SBI_IS_CLOSE); 2417 f2fs_sync_fs(sb, 1); 2418 clear_sbi_flag(sbi, SBI_IS_CLOSE); 2419 } 2420 2421 if ((*flags & SB_RDONLY) || test_opt(sbi, DISABLE_CHECKPOINT) || 2422 !test_opt(sbi, MERGE_CHECKPOINT)) { 2423 f2fs_stop_ckpt_thread(sbi); 2424 need_restart_ckpt = true; 2425 } else { 2426 /* Flush if the prevous checkpoint, if exists. */ 2427 f2fs_flush_ckpt_thread(sbi); 2428 2429 err = f2fs_start_ckpt_thread(sbi); 2430 if (err) { 2431 f2fs_err(sbi, 2432 "Failed to start F2FS issue_checkpoint_thread (%d)", 2433 err); 2434 goto restore_gc; 2435 } 2436 need_stop_ckpt = true; 2437 } 2438 2439 /* 2440 * We stop issue flush thread if FS is mounted as RO 2441 * or if flush_merge is not passed in mount option. 2442 */ 2443 if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) { 2444 clear_opt(sbi, FLUSH_MERGE); 2445 f2fs_destroy_flush_cmd_control(sbi, false); 2446 need_restart_flush = true; 2447 } else { 2448 err = f2fs_create_flush_cmd_control(sbi); 2449 if (err) 2450 goto restore_ckpt; 2451 need_stop_flush = true; 2452 } 2453 2454 if (no_discard == !!test_opt(sbi, DISCARD)) { 2455 if (test_opt(sbi, DISCARD)) { 2456 err = f2fs_start_discard_thread(sbi); 2457 if (err) 2458 goto restore_flush; 2459 need_stop_discard = true; 2460 } else { 2461 f2fs_stop_discard_thread(sbi); 2462 f2fs_issue_discard_timeout(sbi); 2463 need_restart_discard = true; 2464 } 2465 } 2466 2467 if (enable_checkpoint == !!test_opt(sbi, DISABLE_CHECKPOINT)) { 2468 if (test_opt(sbi, DISABLE_CHECKPOINT)) { 2469 err = f2fs_disable_checkpoint(sbi); 2470 if (err) 2471 goto restore_discard; 2472 } else { 2473 f2fs_enable_checkpoint(sbi); 2474 } 2475 } 2476 2477 skip: 2478 #ifdef CONFIG_QUOTA 2479 /* Release old quota file names */ 2480 for (i = 0; i < MAXQUOTAS; i++) 2481 kfree(org_mount_opt.s_qf_names[i]); 2482 #endif 2483 /* Update the POSIXACL Flag */ 2484 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) | 2485 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0); 2486 2487 limit_reserve_root(sbi); 2488 adjust_unusable_cap_perc(sbi); 2489 *flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME); 2490 return 0; 2491 restore_discard: 2492 if (need_restart_discard) { 2493 if (f2fs_start_discard_thread(sbi)) 2494 f2fs_warn(sbi, "discard has been stopped"); 2495 } else if (need_stop_discard) { 2496 f2fs_stop_discard_thread(sbi); 2497 } 2498 restore_flush: 2499 if (need_restart_flush) { 2500 if (f2fs_create_flush_cmd_control(sbi)) 2501 f2fs_warn(sbi, "background flush thread has stopped"); 2502 } else if (need_stop_flush) { 2503 clear_opt(sbi, FLUSH_MERGE); 2504 f2fs_destroy_flush_cmd_control(sbi, false); 2505 } 2506 restore_ckpt: 2507 if (need_restart_ckpt) { 2508 if (f2fs_start_ckpt_thread(sbi)) 2509 f2fs_warn(sbi, "background ckpt thread has stopped"); 2510 } else if (need_stop_ckpt) { 2511 f2fs_stop_ckpt_thread(sbi); 2512 } 2513 restore_gc: 2514 if (need_restart_gc) { 2515 if (f2fs_start_gc_thread(sbi)) 2516 f2fs_warn(sbi, "background gc thread has stopped"); 2517 } else if (need_stop_gc) { 2518 f2fs_stop_gc_thread(sbi); 2519 } 2520 restore_opts: 2521 #ifdef CONFIG_QUOTA 2522 F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt; 2523 for (i = 0; i < MAXQUOTAS; i++) { 2524 kfree(F2FS_OPTION(sbi).s_qf_names[i]); 2525 F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i]; 2526 } 2527 #endif 2528 sbi->mount_opt = org_mount_opt; 2529 sb->s_flags = old_sb_flags; 2530 return err; 2531 } 2532 2533 #ifdef CONFIG_QUOTA 2534 static bool f2fs_need_recovery(struct f2fs_sb_info *sbi) 2535 { 2536 /* need to recovery orphan */ 2537 if (is_set_ckpt_flags(sbi, CP_ORPHAN_PRESENT_FLAG)) 2538 return true; 2539 /* need to recovery data */ 2540 if (test_opt(sbi, DISABLE_ROLL_FORWARD)) 2541 return false; 2542 if (test_opt(sbi, NORECOVERY)) 2543 return false; 2544 return !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG); 2545 } 2546 2547 static bool f2fs_recover_quota_begin(struct f2fs_sb_info *sbi) 2548 { 2549 bool readonly = f2fs_readonly(sbi->sb); 2550 2551 if (!f2fs_need_recovery(sbi)) 2552 return false; 2553 2554 /* it doesn't need to check f2fs_sb_has_readonly() */ 2555 if (f2fs_hw_is_readonly(sbi)) 2556 return false; 2557 2558 if (readonly) { 2559 sbi->sb->s_flags &= ~SB_RDONLY; 2560 set_sbi_flag(sbi, SBI_IS_WRITABLE); 2561 } 2562 2563 /* 2564 * Turn on quotas which were not enabled for read-only mounts if 2565 * filesystem has quota feature, so that they are updated correctly. 2566 */ 2567 return f2fs_enable_quota_files(sbi, readonly); 2568 } 2569 2570 static void f2fs_recover_quota_end(struct f2fs_sb_info *sbi, 2571 bool quota_enabled) 2572 { 2573 if (quota_enabled) 2574 f2fs_quota_off_umount(sbi->sb); 2575 2576 if (is_sbi_flag_set(sbi, SBI_IS_WRITABLE)) { 2577 clear_sbi_flag(sbi, SBI_IS_WRITABLE); 2578 sbi->sb->s_flags |= SB_RDONLY; 2579 } 2580 } 2581 2582 /* Read data from quotafile */ 2583 static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data, 2584 size_t len, loff_t off) 2585 { 2586 struct inode *inode = sb_dqopt(sb)->files[type]; 2587 struct address_space *mapping = inode->i_mapping; 2588 block_t blkidx = F2FS_BYTES_TO_BLK(off); 2589 int offset = off & (sb->s_blocksize - 1); 2590 int tocopy; 2591 size_t toread; 2592 loff_t i_size = i_size_read(inode); 2593 struct page *page; 2594 2595 if (off > i_size) 2596 return 0; 2597 2598 if (off + len > i_size) 2599 len = i_size - off; 2600 toread = len; 2601 while (toread > 0) { 2602 tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread); 2603 repeat: 2604 page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS); 2605 if (IS_ERR(page)) { 2606 if (PTR_ERR(page) == -ENOMEM) { 2607 memalloc_retry_wait(GFP_NOFS); 2608 goto repeat; 2609 } 2610 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2611 return PTR_ERR(page); 2612 } 2613 2614 lock_page(page); 2615 2616 if (unlikely(page->mapping != mapping)) { 2617 f2fs_put_page(page, 1); 2618 goto repeat; 2619 } 2620 if (unlikely(!PageUptodate(page))) { 2621 f2fs_put_page(page, 1); 2622 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2623 return -EIO; 2624 } 2625 2626 memcpy_from_page(data, page, offset, tocopy); 2627 f2fs_put_page(page, 1); 2628 2629 offset = 0; 2630 toread -= tocopy; 2631 data += tocopy; 2632 blkidx++; 2633 } 2634 return len; 2635 } 2636 2637 /* Write to quotafile */ 2638 static ssize_t f2fs_quota_write(struct super_block *sb, int type, 2639 const char *data, size_t len, loff_t off) 2640 { 2641 struct inode *inode = sb_dqopt(sb)->files[type]; 2642 struct address_space *mapping = inode->i_mapping; 2643 const struct address_space_operations *a_ops = mapping->a_ops; 2644 int offset = off & (sb->s_blocksize - 1); 2645 size_t towrite = len; 2646 struct page *page; 2647 void *fsdata = NULL; 2648 int err = 0; 2649 int tocopy; 2650 2651 while (towrite > 0) { 2652 tocopy = min_t(unsigned long, sb->s_blocksize - offset, 2653 towrite); 2654 retry: 2655 err = a_ops->write_begin(NULL, mapping, off, tocopy, 2656 &page, &fsdata); 2657 if (unlikely(err)) { 2658 if (err == -ENOMEM) { 2659 f2fs_io_schedule_timeout(DEFAULT_IO_TIMEOUT); 2660 goto retry; 2661 } 2662 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2663 break; 2664 } 2665 2666 memcpy_to_page(page, offset, data, tocopy); 2667 2668 a_ops->write_end(NULL, mapping, off, tocopy, tocopy, 2669 page, fsdata); 2670 offset = 0; 2671 towrite -= tocopy; 2672 off += tocopy; 2673 data += tocopy; 2674 cond_resched(); 2675 } 2676 2677 if (len == towrite) 2678 return err; 2679 inode->i_mtime = inode_set_ctime_current(inode); 2680 f2fs_mark_inode_dirty_sync(inode, false); 2681 return len - towrite; 2682 } 2683 2684 int f2fs_dquot_initialize(struct inode *inode) 2685 { 2686 if (time_to_inject(F2FS_I_SB(inode), FAULT_DQUOT_INIT)) 2687 return -ESRCH; 2688 2689 return dquot_initialize(inode); 2690 } 2691 2692 static struct dquot __rcu **f2fs_get_dquots(struct inode *inode) 2693 { 2694 return F2FS_I(inode)->i_dquot; 2695 } 2696 2697 static qsize_t *f2fs_get_reserved_space(struct inode *inode) 2698 { 2699 return &F2FS_I(inode)->i_reserved_quota; 2700 } 2701 2702 static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type) 2703 { 2704 if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) { 2705 f2fs_err(sbi, "quota sysfile may be corrupted, skip loading it"); 2706 return 0; 2707 } 2708 2709 return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type], 2710 F2FS_OPTION(sbi).s_jquota_fmt, type); 2711 } 2712 2713 int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly) 2714 { 2715 int enabled = 0; 2716 int i, err; 2717 2718 if (f2fs_sb_has_quota_ino(sbi) && rdonly) { 2719 err = f2fs_enable_quotas(sbi->sb); 2720 if (err) { 2721 f2fs_err(sbi, "Cannot turn on quota_ino: %d", err); 2722 return 0; 2723 } 2724 return 1; 2725 } 2726 2727 for (i = 0; i < MAXQUOTAS; i++) { 2728 if (F2FS_OPTION(sbi).s_qf_names[i]) { 2729 err = f2fs_quota_on_mount(sbi, i); 2730 if (!err) { 2731 enabled = 1; 2732 continue; 2733 } 2734 f2fs_err(sbi, "Cannot turn on quotas: %d on %d", 2735 err, i); 2736 } 2737 } 2738 return enabled; 2739 } 2740 2741 static int f2fs_quota_enable(struct super_block *sb, int type, int format_id, 2742 unsigned int flags) 2743 { 2744 struct inode *qf_inode; 2745 unsigned long qf_inum; 2746 unsigned long qf_flag = F2FS_QUOTA_DEFAULT_FL; 2747 int err; 2748 2749 BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb))); 2750 2751 qf_inum = f2fs_qf_ino(sb, type); 2752 if (!qf_inum) 2753 return -EPERM; 2754 2755 qf_inode = f2fs_iget(sb, qf_inum); 2756 if (IS_ERR(qf_inode)) { 2757 f2fs_err(F2FS_SB(sb), "Bad quota inode %u:%lu", type, qf_inum); 2758 return PTR_ERR(qf_inode); 2759 } 2760 2761 /* Don't account quota for quota files to avoid recursion */ 2762 inode_lock(qf_inode); 2763 qf_inode->i_flags |= S_NOQUOTA; 2764 2765 if ((F2FS_I(qf_inode)->i_flags & qf_flag) != qf_flag) { 2766 F2FS_I(qf_inode)->i_flags |= qf_flag; 2767 f2fs_set_inode_flags(qf_inode); 2768 } 2769 inode_unlock(qf_inode); 2770 2771 err = dquot_load_quota_inode(qf_inode, type, format_id, flags); 2772 iput(qf_inode); 2773 return err; 2774 } 2775 2776 static int f2fs_enable_quotas(struct super_block *sb) 2777 { 2778 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2779 int type, err = 0; 2780 unsigned long qf_inum; 2781 bool quota_mopt[MAXQUOTAS] = { 2782 test_opt(sbi, USRQUOTA), 2783 test_opt(sbi, GRPQUOTA), 2784 test_opt(sbi, PRJQUOTA), 2785 }; 2786 2787 if (is_set_ckpt_flags(F2FS_SB(sb), CP_QUOTA_NEED_FSCK_FLAG)) { 2788 f2fs_err(sbi, "quota file may be corrupted, skip loading it"); 2789 return 0; 2790 } 2791 2792 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE; 2793 2794 for (type = 0; type < MAXQUOTAS; type++) { 2795 qf_inum = f2fs_qf_ino(sb, type); 2796 if (qf_inum) { 2797 err = f2fs_quota_enable(sb, type, QFMT_VFS_V1, 2798 DQUOT_USAGE_ENABLED | 2799 (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0)); 2800 if (err) { 2801 f2fs_err(sbi, "Failed to enable quota tracking (type=%d, err=%d). Please run fsck to fix.", 2802 type, err); 2803 for (type--; type >= 0; type--) 2804 dquot_quota_off(sb, type); 2805 set_sbi_flag(F2FS_SB(sb), 2806 SBI_QUOTA_NEED_REPAIR); 2807 return err; 2808 } 2809 } 2810 } 2811 return 0; 2812 } 2813 2814 static int f2fs_quota_sync_file(struct f2fs_sb_info *sbi, int type) 2815 { 2816 struct quota_info *dqopt = sb_dqopt(sbi->sb); 2817 struct address_space *mapping = dqopt->files[type]->i_mapping; 2818 int ret = 0; 2819 2820 ret = dquot_writeback_dquots(sbi->sb, type); 2821 if (ret) 2822 goto out; 2823 2824 ret = filemap_fdatawrite(mapping); 2825 if (ret) 2826 goto out; 2827 2828 /* if we are using journalled quota */ 2829 if (is_journalled_quota(sbi)) 2830 goto out; 2831 2832 ret = filemap_fdatawait(mapping); 2833 2834 truncate_inode_pages(&dqopt->files[type]->i_data, 0); 2835 out: 2836 if (ret) 2837 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2838 return ret; 2839 } 2840 2841 int f2fs_quota_sync(struct super_block *sb, int type) 2842 { 2843 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2844 struct quota_info *dqopt = sb_dqopt(sb); 2845 int cnt; 2846 int ret = 0; 2847 2848 /* 2849 * Now when everything is written we can discard the pagecache so 2850 * that userspace sees the changes. 2851 */ 2852 for (cnt = 0; cnt < MAXQUOTAS; cnt++) { 2853 2854 if (type != -1 && cnt != type) 2855 continue; 2856 2857 if (!sb_has_quota_active(sb, cnt)) 2858 continue; 2859 2860 if (!f2fs_sb_has_quota_ino(sbi)) 2861 inode_lock(dqopt->files[cnt]); 2862 2863 /* 2864 * do_quotactl 2865 * f2fs_quota_sync 2866 * f2fs_down_read(quota_sem) 2867 * dquot_writeback_dquots() 2868 * f2fs_dquot_commit 2869 * block_operation 2870 * f2fs_down_read(quota_sem) 2871 */ 2872 f2fs_lock_op(sbi); 2873 f2fs_down_read(&sbi->quota_sem); 2874 2875 ret = f2fs_quota_sync_file(sbi, cnt); 2876 2877 f2fs_up_read(&sbi->quota_sem); 2878 f2fs_unlock_op(sbi); 2879 2880 if (!f2fs_sb_has_quota_ino(sbi)) 2881 inode_unlock(dqopt->files[cnt]); 2882 2883 if (ret) 2884 break; 2885 } 2886 return ret; 2887 } 2888 2889 static int f2fs_quota_on(struct super_block *sb, int type, int format_id, 2890 const struct path *path) 2891 { 2892 struct inode *inode; 2893 int err; 2894 2895 /* if quota sysfile exists, deny enabling quota with specific file */ 2896 if (f2fs_sb_has_quota_ino(F2FS_SB(sb))) { 2897 f2fs_err(F2FS_SB(sb), "quota sysfile already exists"); 2898 return -EBUSY; 2899 } 2900 2901 if (path->dentry->d_sb != sb) 2902 return -EXDEV; 2903 2904 err = f2fs_quota_sync(sb, type); 2905 if (err) 2906 return err; 2907 2908 inode = d_inode(path->dentry); 2909 2910 err = filemap_fdatawrite(inode->i_mapping); 2911 if (err) 2912 return err; 2913 2914 err = filemap_fdatawait(inode->i_mapping); 2915 if (err) 2916 return err; 2917 2918 err = dquot_quota_on(sb, type, format_id, path); 2919 if (err) 2920 return err; 2921 2922 inode_lock(inode); 2923 F2FS_I(inode)->i_flags |= F2FS_QUOTA_DEFAULT_FL; 2924 f2fs_set_inode_flags(inode); 2925 inode_unlock(inode); 2926 f2fs_mark_inode_dirty_sync(inode, false); 2927 2928 return 0; 2929 } 2930 2931 static int __f2fs_quota_off(struct super_block *sb, int type) 2932 { 2933 struct inode *inode = sb_dqopt(sb)->files[type]; 2934 int err; 2935 2936 if (!inode || !igrab(inode)) 2937 return dquot_quota_off(sb, type); 2938 2939 err = f2fs_quota_sync(sb, type); 2940 if (err) 2941 goto out_put; 2942 2943 err = dquot_quota_off(sb, type); 2944 if (err || f2fs_sb_has_quota_ino(F2FS_SB(sb))) 2945 goto out_put; 2946 2947 inode_lock(inode); 2948 F2FS_I(inode)->i_flags &= ~F2FS_QUOTA_DEFAULT_FL; 2949 f2fs_set_inode_flags(inode); 2950 inode_unlock(inode); 2951 f2fs_mark_inode_dirty_sync(inode, false); 2952 out_put: 2953 iput(inode); 2954 return err; 2955 } 2956 2957 static int f2fs_quota_off(struct super_block *sb, int type) 2958 { 2959 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2960 int err; 2961 2962 err = __f2fs_quota_off(sb, type); 2963 2964 /* 2965 * quotactl can shutdown journalled quota, result in inconsistence 2966 * between quota record and fs data by following updates, tag the 2967 * flag to let fsck be aware of it. 2968 */ 2969 if (is_journalled_quota(sbi)) 2970 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2971 return err; 2972 } 2973 2974 void f2fs_quota_off_umount(struct super_block *sb) 2975 { 2976 int type; 2977 int err; 2978 2979 for (type = 0; type < MAXQUOTAS; type++) { 2980 err = __f2fs_quota_off(sb, type); 2981 if (err) { 2982 int ret = dquot_quota_off(sb, type); 2983 2984 f2fs_err(F2FS_SB(sb), "Fail to turn off disk quota (type: %d, err: %d, ret:%d), Please run fsck to fix it.", 2985 type, err, ret); 2986 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2987 } 2988 } 2989 /* 2990 * In case of checkpoint=disable, we must flush quota blocks. 2991 * This can cause NULL exception for node_inode in end_io, since 2992 * put_super already dropped it. 2993 */ 2994 sync_filesystem(sb); 2995 } 2996 2997 static void f2fs_truncate_quota_inode_pages(struct super_block *sb) 2998 { 2999 struct quota_info *dqopt = sb_dqopt(sb); 3000 int type; 3001 3002 for (type = 0; type < MAXQUOTAS; type++) { 3003 if (!dqopt->files[type]) 3004 continue; 3005 f2fs_inode_synced(dqopt->files[type]); 3006 } 3007 } 3008 3009 static int f2fs_dquot_commit(struct dquot *dquot) 3010 { 3011 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb); 3012 int ret; 3013 3014 f2fs_down_read_nested(&sbi->quota_sem, SINGLE_DEPTH_NESTING); 3015 ret = dquot_commit(dquot); 3016 if (ret < 0) 3017 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 3018 f2fs_up_read(&sbi->quota_sem); 3019 return ret; 3020 } 3021 3022 static int f2fs_dquot_acquire(struct dquot *dquot) 3023 { 3024 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb); 3025 int ret; 3026 3027 f2fs_down_read(&sbi->quota_sem); 3028 ret = dquot_acquire(dquot); 3029 if (ret < 0) 3030 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 3031 f2fs_up_read(&sbi->quota_sem); 3032 return ret; 3033 } 3034 3035 static int f2fs_dquot_release(struct dquot *dquot) 3036 { 3037 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb); 3038 int ret = dquot_release(dquot); 3039 3040 if (ret < 0) 3041 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 3042 return ret; 3043 } 3044 3045 static int f2fs_dquot_mark_dquot_dirty(struct dquot *dquot) 3046 { 3047 struct super_block *sb = dquot->dq_sb; 3048 struct f2fs_sb_info *sbi = F2FS_SB(sb); 3049 int ret = dquot_mark_dquot_dirty(dquot); 3050 3051 /* if we are using journalled quota */ 3052 if (is_journalled_quota(sbi)) 3053 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH); 3054 3055 return ret; 3056 } 3057 3058 static int f2fs_dquot_commit_info(struct super_block *sb, int type) 3059 { 3060 struct f2fs_sb_info *sbi = F2FS_SB(sb); 3061 int ret = dquot_commit_info(sb, type); 3062 3063 if (ret < 0) 3064 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 3065 return ret; 3066 } 3067 3068 static int f2fs_get_projid(struct inode *inode, kprojid_t *projid) 3069 { 3070 *projid = F2FS_I(inode)->i_projid; 3071 return 0; 3072 } 3073 3074 static const struct dquot_operations f2fs_quota_operations = { 3075 .get_reserved_space = f2fs_get_reserved_space, 3076 .write_dquot = f2fs_dquot_commit, 3077 .acquire_dquot = f2fs_dquot_acquire, 3078 .release_dquot = f2fs_dquot_release, 3079 .mark_dirty = f2fs_dquot_mark_dquot_dirty, 3080 .write_info = f2fs_dquot_commit_info, 3081 .alloc_dquot = dquot_alloc, 3082 .destroy_dquot = dquot_destroy, 3083 .get_projid = f2fs_get_projid, 3084 .get_next_id = dquot_get_next_id, 3085 }; 3086 3087 static const struct quotactl_ops f2fs_quotactl_ops = { 3088 .quota_on = f2fs_quota_on, 3089 .quota_off = f2fs_quota_off, 3090 .quota_sync = f2fs_quota_sync, 3091 .get_state = dquot_get_state, 3092 .set_info = dquot_set_dqinfo, 3093 .get_dqblk = dquot_get_dqblk, 3094 .set_dqblk = dquot_set_dqblk, 3095 .get_nextdqblk = dquot_get_next_dqblk, 3096 }; 3097 #else 3098 int f2fs_dquot_initialize(struct inode *inode) 3099 { 3100 return 0; 3101 } 3102 3103 int f2fs_quota_sync(struct super_block *sb, int type) 3104 { 3105 return 0; 3106 } 3107 3108 void f2fs_quota_off_umount(struct super_block *sb) 3109 { 3110 } 3111 #endif 3112 3113 static const struct super_operations f2fs_sops = { 3114 .alloc_inode = f2fs_alloc_inode, 3115 .free_inode = f2fs_free_inode, 3116 .drop_inode = f2fs_drop_inode, 3117 .write_inode = f2fs_write_inode, 3118 .dirty_inode = f2fs_dirty_inode, 3119 .show_options = f2fs_show_options, 3120 #ifdef CONFIG_QUOTA 3121 .quota_read = f2fs_quota_read, 3122 .quota_write = f2fs_quota_write, 3123 .get_dquots = f2fs_get_dquots, 3124 #endif 3125 .evict_inode = f2fs_evict_inode, 3126 .put_super = f2fs_put_super, 3127 .sync_fs = f2fs_sync_fs, 3128 .freeze_fs = f2fs_freeze, 3129 .unfreeze_fs = f2fs_unfreeze, 3130 .statfs = f2fs_statfs, 3131 .remount_fs = f2fs_remount, 3132 }; 3133 3134 #ifdef CONFIG_FS_ENCRYPTION 3135 static int f2fs_get_context(struct inode *inode, void *ctx, size_t len) 3136 { 3137 return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION, 3138 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, 3139 ctx, len, NULL); 3140 } 3141 3142 static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len, 3143 void *fs_data) 3144 { 3145 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 3146 3147 /* 3148 * Encrypting the root directory is not allowed because fsck 3149 * expects lost+found directory to exist and remain unencrypted 3150 * if LOST_FOUND feature is enabled. 3151 * 3152 */ 3153 if (f2fs_sb_has_lost_found(sbi) && 3154 inode->i_ino == F2FS_ROOT_INO(sbi)) 3155 return -EPERM; 3156 3157 return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION, 3158 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, 3159 ctx, len, fs_data, XATTR_CREATE); 3160 } 3161 3162 static const union fscrypt_policy *f2fs_get_dummy_policy(struct super_block *sb) 3163 { 3164 return F2FS_OPTION(F2FS_SB(sb)).dummy_enc_policy.policy; 3165 } 3166 3167 static bool f2fs_has_stable_inodes(struct super_block *sb) 3168 { 3169 return true; 3170 } 3171 3172 static void f2fs_get_ino_and_lblk_bits(struct super_block *sb, 3173 int *ino_bits_ret, int *lblk_bits_ret) 3174 { 3175 *ino_bits_ret = 8 * sizeof(nid_t); 3176 *lblk_bits_ret = 8 * sizeof(block_t); 3177 } 3178 3179 static struct block_device **f2fs_get_devices(struct super_block *sb, 3180 unsigned int *num_devs) 3181 { 3182 struct f2fs_sb_info *sbi = F2FS_SB(sb); 3183 struct block_device **devs; 3184 int i; 3185 3186 if (!f2fs_is_multi_device(sbi)) 3187 return NULL; 3188 3189 devs = kmalloc_array(sbi->s_ndevs, sizeof(*devs), GFP_KERNEL); 3190 if (!devs) 3191 return ERR_PTR(-ENOMEM); 3192 3193 for (i = 0; i < sbi->s_ndevs; i++) 3194 devs[i] = FDEV(i).bdev; 3195 *num_devs = sbi->s_ndevs; 3196 return devs; 3197 } 3198 3199 static const struct fscrypt_operations f2fs_cryptops = { 3200 .key_prefix = "f2fs:", 3201 .get_context = f2fs_get_context, 3202 .set_context = f2fs_set_context, 3203 .get_dummy_policy = f2fs_get_dummy_policy, 3204 .empty_dir = f2fs_empty_dir, 3205 .has_stable_inodes = f2fs_has_stable_inodes, 3206 .get_ino_and_lblk_bits = f2fs_get_ino_and_lblk_bits, 3207 .get_devices = f2fs_get_devices, 3208 }; 3209 #endif 3210 3211 static struct inode *f2fs_nfs_get_inode(struct super_block *sb, 3212 u64 ino, u32 generation) 3213 { 3214 struct f2fs_sb_info *sbi = F2FS_SB(sb); 3215 struct inode *inode; 3216 3217 if (f2fs_check_nid_range(sbi, ino)) 3218 return ERR_PTR(-ESTALE); 3219 3220 /* 3221 * f2fs_iget isn't quite right if the inode is currently unallocated! 3222 * However f2fs_iget currently does appropriate checks to handle stale 3223 * inodes so everything is OK. 3224 */ 3225 inode = f2fs_iget(sb, ino); 3226 if (IS_ERR(inode)) 3227 return ERR_CAST(inode); 3228 if (unlikely(generation && inode->i_generation != generation)) { 3229 /* we didn't find the right inode.. */ 3230 iput(inode); 3231 return ERR_PTR(-ESTALE); 3232 } 3233 return inode; 3234 } 3235 3236 static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid, 3237 int fh_len, int fh_type) 3238 { 3239 return generic_fh_to_dentry(sb, fid, fh_len, fh_type, 3240 f2fs_nfs_get_inode); 3241 } 3242 3243 static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid, 3244 int fh_len, int fh_type) 3245 { 3246 return generic_fh_to_parent(sb, fid, fh_len, fh_type, 3247 f2fs_nfs_get_inode); 3248 } 3249 3250 static const struct export_operations f2fs_export_ops = { 3251 .fh_to_dentry = f2fs_fh_to_dentry, 3252 .fh_to_parent = f2fs_fh_to_parent, 3253 .get_parent = f2fs_get_parent, 3254 }; 3255 3256 loff_t max_file_blocks(struct inode *inode) 3257 { 3258 loff_t result = 0; 3259 loff_t leaf_count; 3260 3261 /* 3262 * note: previously, result is equal to (DEF_ADDRS_PER_INODE - 3263 * DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more 3264 * space in inode.i_addr, it will be more safe to reassign 3265 * result as zero. 3266 */ 3267 3268 if (inode && f2fs_compressed_file(inode)) 3269 leaf_count = ADDRS_PER_BLOCK(inode); 3270 else 3271 leaf_count = DEF_ADDRS_PER_BLOCK; 3272 3273 /* two direct node blocks */ 3274 result += (leaf_count * 2); 3275 3276 /* two indirect node blocks */ 3277 leaf_count *= NIDS_PER_BLOCK; 3278 result += (leaf_count * 2); 3279 3280 /* one double indirect node block */ 3281 leaf_count *= NIDS_PER_BLOCK; 3282 result += leaf_count; 3283 3284 return result; 3285 } 3286 3287 static int __f2fs_commit_super(struct buffer_head *bh, 3288 struct f2fs_super_block *super) 3289 { 3290 lock_buffer(bh); 3291 if (super) 3292 memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super)); 3293 set_buffer_dirty(bh); 3294 unlock_buffer(bh); 3295 3296 /* it's rare case, we can do fua all the time */ 3297 return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA); 3298 } 3299 3300 static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi, 3301 struct buffer_head *bh) 3302 { 3303 struct f2fs_super_block *raw_super = (struct f2fs_super_block *) 3304 (bh->b_data + F2FS_SUPER_OFFSET); 3305 struct super_block *sb = sbi->sb; 3306 u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr); 3307 u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr); 3308 u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr); 3309 u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr); 3310 u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr); 3311 u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr); 3312 u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt); 3313 u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit); 3314 u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat); 3315 u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa); 3316 u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main); 3317 u32 segment_count = le32_to_cpu(raw_super->segment_count); 3318 u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); 3319 u64 main_end_blkaddr = main_blkaddr + 3320 (segment_count_main << log_blocks_per_seg); 3321 u64 seg_end_blkaddr = segment0_blkaddr + 3322 (segment_count << log_blocks_per_seg); 3323 3324 if (segment0_blkaddr != cp_blkaddr) { 3325 f2fs_info(sbi, "Mismatch start address, segment0(%u) cp_blkaddr(%u)", 3326 segment0_blkaddr, cp_blkaddr); 3327 return true; 3328 } 3329 3330 if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) != 3331 sit_blkaddr) { 3332 f2fs_info(sbi, "Wrong CP boundary, start(%u) end(%u) blocks(%u)", 3333 cp_blkaddr, sit_blkaddr, 3334 segment_count_ckpt << log_blocks_per_seg); 3335 return true; 3336 } 3337 3338 if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) != 3339 nat_blkaddr) { 3340 f2fs_info(sbi, "Wrong SIT boundary, start(%u) end(%u) blocks(%u)", 3341 sit_blkaddr, nat_blkaddr, 3342 segment_count_sit << log_blocks_per_seg); 3343 return true; 3344 } 3345 3346 if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) != 3347 ssa_blkaddr) { 3348 f2fs_info(sbi, "Wrong NAT boundary, start(%u) end(%u) blocks(%u)", 3349 nat_blkaddr, ssa_blkaddr, 3350 segment_count_nat << log_blocks_per_seg); 3351 return true; 3352 } 3353 3354 if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) != 3355 main_blkaddr) { 3356 f2fs_info(sbi, "Wrong SSA boundary, start(%u) end(%u) blocks(%u)", 3357 ssa_blkaddr, main_blkaddr, 3358 segment_count_ssa << log_blocks_per_seg); 3359 return true; 3360 } 3361 3362 if (main_end_blkaddr > seg_end_blkaddr) { 3363 f2fs_info(sbi, "Wrong MAIN_AREA boundary, start(%u) end(%llu) block(%u)", 3364 main_blkaddr, seg_end_blkaddr, 3365 segment_count_main << log_blocks_per_seg); 3366 return true; 3367 } else if (main_end_blkaddr < seg_end_blkaddr) { 3368 int err = 0; 3369 char *res; 3370 3371 /* fix in-memory information all the time */ 3372 raw_super->segment_count = cpu_to_le32((main_end_blkaddr - 3373 segment0_blkaddr) >> log_blocks_per_seg); 3374 3375 if (f2fs_readonly(sb) || f2fs_hw_is_readonly(sbi)) { 3376 set_sbi_flag(sbi, SBI_NEED_SB_WRITE); 3377 res = "internally"; 3378 } else { 3379 err = __f2fs_commit_super(bh, NULL); 3380 res = err ? "failed" : "done"; 3381 } 3382 f2fs_info(sbi, "Fix alignment : %s, start(%u) end(%llu) block(%u)", 3383 res, main_blkaddr, seg_end_blkaddr, 3384 segment_count_main << log_blocks_per_seg); 3385 if (err) 3386 return true; 3387 } 3388 return false; 3389 } 3390 3391 static int sanity_check_raw_super(struct f2fs_sb_info *sbi, 3392 struct buffer_head *bh) 3393 { 3394 block_t segment_count, segs_per_sec, secs_per_zone, segment_count_main; 3395 block_t total_sections, blocks_per_seg; 3396 struct f2fs_super_block *raw_super = (struct f2fs_super_block *) 3397 (bh->b_data + F2FS_SUPER_OFFSET); 3398 size_t crc_offset = 0; 3399 __u32 crc = 0; 3400 3401 if (le32_to_cpu(raw_super->magic) != F2FS_SUPER_MAGIC) { 3402 f2fs_info(sbi, "Magic Mismatch, valid(0x%x) - read(0x%x)", 3403 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic)); 3404 return -EINVAL; 3405 } 3406 3407 /* Check checksum_offset and crc in superblock */ 3408 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_SB_CHKSUM)) { 3409 crc_offset = le32_to_cpu(raw_super->checksum_offset); 3410 if (crc_offset != 3411 offsetof(struct f2fs_super_block, crc)) { 3412 f2fs_info(sbi, "Invalid SB checksum offset: %zu", 3413 crc_offset); 3414 return -EFSCORRUPTED; 3415 } 3416 crc = le32_to_cpu(raw_super->crc); 3417 if (!f2fs_crc_valid(sbi, crc, raw_super, crc_offset)) { 3418 f2fs_info(sbi, "Invalid SB checksum value: %u", crc); 3419 return -EFSCORRUPTED; 3420 } 3421 } 3422 3423 /* Currently, support only 4KB block size */ 3424 if (le32_to_cpu(raw_super->log_blocksize) != F2FS_BLKSIZE_BITS) { 3425 f2fs_info(sbi, "Invalid log_blocksize (%u), supports only %u", 3426 le32_to_cpu(raw_super->log_blocksize), 3427 F2FS_BLKSIZE_BITS); 3428 return -EFSCORRUPTED; 3429 } 3430 3431 /* check log blocks per segment */ 3432 if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) { 3433 f2fs_info(sbi, "Invalid log blocks per segment (%u)", 3434 le32_to_cpu(raw_super->log_blocks_per_seg)); 3435 return -EFSCORRUPTED; 3436 } 3437 3438 /* Currently, support 512/1024/2048/4096 bytes sector size */ 3439 if (le32_to_cpu(raw_super->log_sectorsize) > 3440 F2FS_MAX_LOG_SECTOR_SIZE || 3441 le32_to_cpu(raw_super->log_sectorsize) < 3442 F2FS_MIN_LOG_SECTOR_SIZE) { 3443 f2fs_info(sbi, "Invalid log sectorsize (%u)", 3444 le32_to_cpu(raw_super->log_sectorsize)); 3445 return -EFSCORRUPTED; 3446 } 3447 if (le32_to_cpu(raw_super->log_sectors_per_block) + 3448 le32_to_cpu(raw_super->log_sectorsize) != 3449 F2FS_MAX_LOG_SECTOR_SIZE) { 3450 f2fs_info(sbi, "Invalid log sectors per block(%u) log sectorsize(%u)", 3451 le32_to_cpu(raw_super->log_sectors_per_block), 3452 le32_to_cpu(raw_super->log_sectorsize)); 3453 return -EFSCORRUPTED; 3454 } 3455 3456 segment_count = le32_to_cpu(raw_super->segment_count); 3457 segment_count_main = le32_to_cpu(raw_super->segment_count_main); 3458 segs_per_sec = le32_to_cpu(raw_super->segs_per_sec); 3459 secs_per_zone = le32_to_cpu(raw_super->secs_per_zone); 3460 total_sections = le32_to_cpu(raw_super->section_count); 3461 3462 /* blocks_per_seg should be 512, given the above check */ 3463 blocks_per_seg = BIT(le32_to_cpu(raw_super->log_blocks_per_seg)); 3464 3465 if (segment_count > F2FS_MAX_SEGMENT || 3466 segment_count < F2FS_MIN_SEGMENTS) { 3467 f2fs_info(sbi, "Invalid segment count (%u)", segment_count); 3468 return -EFSCORRUPTED; 3469 } 3470 3471 if (total_sections > segment_count_main || total_sections < 1 || 3472 segs_per_sec > segment_count || !segs_per_sec) { 3473 f2fs_info(sbi, "Invalid segment/section count (%u, %u x %u)", 3474 segment_count, total_sections, segs_per_sec); 3475 return -EFSCORRUPTED; 3476 } 3477 3478 if (segment_count_main != total_sections * segs_per_sec) { 3479 f2fs_info(sbi, "Invalid segment/section count (%u != %u * %u)", 3480 segment_count_main, total_sections, segs_per_sec); 3481 return -EFSCORRUPTED; 3482 } 3483 3484 if ((segment_count / segs_per_sec) < total_sections) { 3485 f2fs_info(sbi, "Small segment_count (%u < %u * %u)", 3486 segment_count, segs_per_sec, total_sections); 3487 return -EFSCORRUPTED; 3488 } 3489 3490 if (segment_count > (le64_to_cpu(raw_super->block_count) >> 9)) { 3491 f2fs_info(sbi, "Wrong segment_count / block_count (%u > %llu)", 3492 segment_count, le64_to_cpu(raw_super->block_count)); 3493 return -EFSCORRUPTED; 3494 } 3495 3496 if (RDEV(0).path[0]) { 3497 block_t dev_seg_count = le32_to_cpu(RDEV(0).total_segments); 3498 int i = 1; 3499 3500 while (i < MAX_DEVICES && RDEV(i).path[0]) { 3501 dev_seg_count += le32_to_cpu(RDEV(i).total_segments); 3502 i++; 3503 } 3504 if (segment_count != dev_seg_count) { 3505 f2fs_info(sbi, "Segment count (%u) mismatch with total segments from devices (%u)", 3506 segment_count, dev_seg_count); 3507 return -EFSCORRUPTED; 3508 } 3509 } else { 3510 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_BLKZONED) && 3511 !bdev_is_zoned(sbi->sb->s_bdev)) { 3512 f2fs_info(sbi, "Zoned block device path is missing"); 3513 return -EFSCORRUPTED; 3514 } 3515 } 3516 3517 if (secs_per_zone > total_sections || !secs_per_zone) { 3518 f2fs_info(sbi, "Wrong secs_per_zone / total_sections (%u, %u)", 3519 secs_per_zone, total_sections); 3520 return -EFSCORRUPTED; 3521 } 3522 if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION || 3523 raw_super->hot_ext_count > F2FS_MAX_EXTENSION || 3524 (le32_to_cpu(raw_super->extension_count) + 3525 raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) { 3526 f2fs_info(sbi, "Corrupted extension count (%u + %u > %u)", 3527 le32_to_cpu(raw_super->extension_count), 3528 raw_super->hot_ext_count, 3529 F2FS_MAX_EXTENSION); 3530 return -EFSCORRUPTED; 3531 } 3532 3533 if (le32_to_cpu(raw_super->cp_payload) >= 3534 (blocks_per_seg - F2FS_CP_PACKS - 3535 NR_CURSEG_PERSIST_TYPE)) { 3536 f2fs_info(sbi, "Insane cp_payload (%u >= %u)", 3537 le32_to_cpu(raw_super->cp_payload), 3538 blocks_per_seg - F2FS_CP_PACKS - 3539 NR_CURSEG_PERSIST_TYPE); 3540 return -EFSCORRUPTED; 3541 } 3542 3543 /* check reserved ino info */ 3544 if (le32_to_cpu(raw_super->node_ino) != 1 || 3545 le32_to_cpu(raw_super->meta_ino) != 2 || 3546 le32_to_cpu(raw_super->root_ino) != 3) { 3547 f2fs_info(sbi, "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)", 3548 le32_to_cpu(raw_super->node_ino), 3549 le32_to_cpu(raw_super->meta_ino), 3550 le32_to_cpu(raw_super->root_ino)); 3551 return -EFSCORRUPTED; 3552 } 3553 3554 /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */ 3555 if (sanity_check_area_boundary(sbi, bh)) 3556 return -EFSCORRUPTED; 3557 3558 return 0; 3559 } 3560 3561 int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi) 3562 { 3563 unsigned int total, fsmeta; 3564 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 3565 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 3566 unsigned int ovp_segments, reserved_segments; 3567 unsigned int main_segs, blocks_per_seg; 3568 unsigned int sit_segs, nat_segs; 3569 unsigned int sit_bitmap_size, nat_bitmap_size; 3570 unsigned int log_blocks_per_seg; 3571 unsigned int segment_count_main; 3572 unsigned int cp_pack_start_sum, cp_payload; 3573 block_t user_block_count, valid_user_blocks; 3574 block_t avail_node_count, valid_node_count; 3575 unsigned int nat_blocks, nat_bits_bytes, nat_bits_blocks; 3576 int i, j; 3577 3578 total = le32_to_cpu(raw_super->segment_count); 3579 fsmeta = le32_to_cpu(raw_super->segment_count_ckpt); 3580 sit_segs = le32_to_cpu(raw_super->segment_count_sit); 3581 fsmeta += sit_segs; 3582 nat_segs = le32_to_cpu(raw_super->segment_count_nat); 3583 fsmeta += nat_segs; 3584 fsmeta += le32_to_cpu(ckpt->rsvd_segment_count); 3585 fsmeta += le32_to_cpu(raw_super->segment_count_ssa); 3586 3587 if (unlikely(fsmeta >= total)) 3588 return 1; 3589 3590 ovp_segments = le32_to_cpu(ckpt->overprov_segment_count); 3591 reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count); 3592 3593 if (!f2fs_sb_has_readonly(sbi) && 3594 unlikely(fsmeta < F2FS_MIN_META_SEGMENTS || 3595 ovp_segments == 0 || reserved_segments == 0)) { 3596 f2fs_err(sbi, "Wrong layout: check mkfs.f2fs version"); 3597 return 1; 3598 } 3599 user_block_count = le64_to_cpu(ckpt->user_block_count); 3600 segment_count_main = le32_to_cpu(raw_super->segment_count_main) + 3601 (f2fs_sb_has_readonly(sbi) ? 1 : 0); 3602 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); 3603 if (!user_block_count || user_block_count >= 3604 segment_count_main << log_blocks_per_seg) { 3605 f2fs_err(sbi, "Wrong user_block_count: %u", 3606 user_block_count); 3607 return 1; 3608 } 3609 3610 valid_user_blocks = le64_to_cpu(ckpt->valid_block_count); 3611 if (valid_user_blocks > user_block_count) { 3612 f2fs_err(sbi, "Wrong valid_user_blocks: %u, user_block_count: %u", 3613 valid_user_blocks, user_block_count); 3614 return 1; 3615 } 3616 3617 valid_node_count = le32_to_cpu(ckpt->valid_node_count); 3618 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM; 3619 if (valid_node_count > avail_node_count) { 3620 f2fs_err(sbi, "Wrong valid_node_count: %u, avail_node_count: %u", 3621 valid_node_count, avail_node_count); 3622 return 1; 3623 } 3624 3625 main_segs = le32_to_cpu(raw_super->segment_count_main); 3626 blocks_per_seg = BLKS_PER_SEG(sbi); 3627 3628 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { 3629 if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs || 3630 le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg) 3631 return 1; 3632 3633 if (f2fs_sb_has_readonly(sbi)) 3634 goto check_data; 3635 3636 for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) { 3637 if (le32_to_cpu(ckpt->cur_node_segno[i]) == 3638 le32_to_cpu(ckpt->cur_node_segno[j])) { 3639 f2fs_err(sbi, "Node segment (%u, %u) has the same segno: %u", 3640 i, j, 3641 le32_to_cpu(ckpt->cur_node_segno[i])); 3642 return 1; 3643 } 3644 } 3645 } 3646 check_data: 3647 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) { 3648 if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs || 3649 le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg) 3650 return 1; 3651 3652 if (f2fs_sb_has_readonly(sbi)) 3653 goto skip_cross; 3654 3655 for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) { 3656 if (le32_to_cpu(ckpt->cur_data_segno[i]) == 3657 le32_to_cpu(ckpt->cur_data_segno[j])) { 3658 f2fs_err(sbi, "Data segment (%u, %u) has the same segno: %u", 3659 i, j, 3660 le32_to_cpu(ckpt->cur_data_segno[i])); 3661 return 1; 3662 } 3663 } 3664 } 3665 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { 3666 for (j = 0; j < NR_CURSEG_DATA_TYPE; j++) { 3667 if (le32_to_cpu(ckpt->cur_node_segno[i]) == 3668 le32_to_cpu(ckpt->cur_data_segno[j])) { 3669 f2fs_err(sbi, "Node segment (%u) and Data segment (%u) has the same segno: %u", 3670 i, j, 3671 le32_to_cpu(ckpt->cur_node_segno[i])); 3672 return 1; 3673 } 3674 } 3675 } 3676 skip_cross: 3677 sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize); 3678 nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize); 3679 3680 if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 || 3681 nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) { 3682 f2fs_err(sbi, "Wrong bitmap size: sit: %u, nat:%u", 3683 sit_bitmap_size, nat_bitmap_size); 3684 return 1; 3685 } 3686 3687 cp_pack_start_sum = __start_sum_addr(sbi); 3688 cp_payload = __cp_payload(sbi); 3689 if (cp_pack_start_sum < cp_payload + 1 || 3690 cp_pack_start_sum > blocks_per_seg - 1 - 3691 NR_CURSEG_PERSIST_TYPE) { 3692 f2fs_err(sbi, "Wrong cp_pack_start_sum: %u", 3693 cp_pack_start_sum); 3694 return 1; 3695 } 3696 3697 if (__is_set_ckpt_flags(ckpt, CP_LARGE_NAT_BITMAP_FLAG) && 3698 le32_to_cpu(ckpt->checksum_offset) != CP_MIN_CHKSUM_OFFSET) { 3699 f2fs_warn(sbi, "using deprecated layout of large_nat_bitmap, " 3700 "please run fsck v1.13.0 or higher to repair, chksum_offset: %u, " 3701 "fixed with patch: \"f2fs-tools: relocate chksum_offset for large_nat_bitmap feature\"", 3702 le32_to_cpu(ckpt->checksum_offset)); 3703 return 1; 3704 } 3705 3706 nat_blocks = nat_segs << log_blocks_per_seg; 3707 nat_bits_bytes = nat_blocks / BITS_PER_BYTE; 3708 nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8); 3709 if (__is_set_ckpt_flags(ckpt, CP_NAT_BITS_FLAG) && 3710 (cp_payload + F2FS_CP_PACKS + 3711 NR_CURSEG_PERSIST_TYPE + nat_bits_blocks >= blocks_per_seg)) { 3712 f2fs_warn(sbi, "Insane cp_payload: %u, nat_bits_blocks: %u)", 3713 cp_payload, nat_bits_blocks); 3714 return 1; 3715 } 3716 3717 if (unlikely(f2fs_cp_error(sbi))) { 3718 f2fs_err(sbi, "A bug case: need to run fsck"); 3719 return 1; 3720 } 3721 return 0; 3722 } 3723 3724 static void init_sb_info(struct f2fs_sb_info *sbi) 3725 { 3726 struct f2fs_super_block *raw_super = sbi->raw_super; 3727 int i; 3728 3729 sbi->log_sectors_per_block = 3730 le32_to_cpu(raw_super->log_sectors_per_block); 3731 sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize); 3732 sbi->blocksize = BIT(sbi->log_blocksize); 3733 sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); 3734 sbi->blocks_per_seg = BIT(sbi->log_blocks_per_seg); 3735 sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec); 3736 sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone); 3737 sbi->total_sections = le32_to_cpu(raw_super->section_count); 3738 sbi->total_node_count = 3739 ((le32_to_cpu(raw_super->segment_count_nat) / 2) * 3740 NAT_ENTRY_PER_BLOCK) << sbi->log_blocks_per_seg; 3741 F2FS_ROOT_INO(sbi) = le32_to_cpu(raw_super->root_ino); 3742 F2FS_NODE_INO(sbi) = le32_to_cpu(raw_super->node_ino); 3743 F2FS_META_INO(sbi) = le32_to_cpu(raw_super->meta_ino); 3744 sbi->cur_victim_sec = NULL_SECNO; 3745 sbi->gc_mode = GC_NORMAL; 3746 sbi->next_victim_seg[BG_GC] = NULL_SEGNO; 3747 sbi->next_victim_seg[FG_GC] = NULL_SEGNO; 3748 sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH; 3749 sbi->migration_granularity = SEGS_PER_SEC(sbi); 3750 sbi->seq_file_ra_mul = MIN_RA_MUL; 3751 sbi->max_fragment_chunk = DEF_FRAGMENT_SIZE; 3752 sbi->max_fragment_hole = DEF_FRAGMENT_SIZE; 3753 spin_lock_init(&sbi->gc_remaining_trials_lock); 3754 atomic64_set(&sbi->current_atomic_write, 0); 3755 3756 sbi->dir_level = DEF_DIR_LEVEL; 3757 sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL; 3758 sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL; 3759 sbi->interval_time[DISCARD_TIME] = DEF_IDLE_INTERVAL; 3760 sbi->interval_time[GC_TIME] = DEF_IDLE_INTERVAL; 3761 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_INTERVAL; 3762 sbi->interval_time[UMOUNT_DISCARD_TIMEOUT] = 3763 DEF_UMOUNT_DISCARD_TIMEOUT; 3764 clear_sbi_flag(sbi, SBI_NEED_FSCK); 3765 3766 for (i = 0; i < NR_COUNT_TYPE; i++) 3767 atomic_set(&sbi->nr_pages[i], 0); 3768 3769 for (i = 0; i < META; i++) 3770 atomic_set(&sbi->wb_sync_req[i], 0); 3771 3772 INIT_LIST_HEAD(&sbi->s_list); 3773 mutex_init(&sbi->umount_mutex); 3774 init_f2fs_rwsem(&sbi->io_order_lock); 3775 spin_lock_init(&sbi->cp_lock); 3776 3777 sbi->dirty_device = 0; 3778 spin_lock_init(&sbi->dev_lock); 3779 3780 init_f2fs_rwsem(&sbi->sb_lock); 3781 init_f2fs_rwsem(&sbi->pin_sem); 3782 } 3783 3784 static int init_percpu_info(struct f2fs_sb_info *sbi) 3785 { 3786 int err; 3787 3788 err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL); 3789 if (err) 3790 return err; 3791 3792 err = percpu_counter_init(&sbi->rf_node_block_count, 0, GFP_KERNEL); 3793 if (err) 3794 goto err_valid_block; 3795 3796 err = percpu_counter_init(&sbi->total_valid_inode_count, 0, 3797 GFP_KERNEL); 3798 if (err) 3799 goto err_node_block; 3800 return 0; 3801 3802 err_node_block: 3803 percpu_counter_destroy(&sbi->rf_node_block_count); 3804 err_valid_block: 3805 percpu_counter_destroy(&sbi->alloc_valid_block_count); 3806 return err; 3807 } 3808 3809 #ifdef CONFIG_BLK_DEV_ZONED 3810 3811 struct f2fs_report_zones_args { 3812 struct f2fs_sb_info *sbi; 3813 struct f2fs_dev_info *dev; 3814 }; 3815 3816 static int f2fs_report_zone_cb(struct blk_zone *zone, unsigned int idx, 3817 void *data) 3818 { 3819 struct f2fs_report_zones_args *rz_args = data; 3820 block_t unusable_blocks = (zone->len - zone->capacity) >> 3821 F2FS_LOG_SECTORS_PER_BLOCK; 3822 3823 if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL) 3824 return 0; 3825 3826 set_bit(idx, rz_args->dev->blkz_seq); 3827 if (!rz_args->sbi->unusable_blocks_per_sec) { 3828 rz_args->sbi->unusable_blocks_per_sec = unusable_blocks; 3829 return 0; 3830 } 3831 if (rz_args->sbi->unusable_blocks_per_sec != unusable_blocks) { 3832 f2fs_err(rz_args->sbi, "F2FS supports single zone capacity\n"); 3833 return -EINVAL; 3834 } 3835 return 0; 3836 } 3837 3838 static int init_blkz_info(struct f2fs_sb_info *sbi, int devi) 3839 { 3840 struct block_device *bdev = FDEV(devi).bdev; 3841 sector_t nr_sectors = bdev_nr_sectors(bdev); 3842 struct f2fs_report_zones_args rep_zone_arg; 3843 u64 zone_sectors; 3844 int ret; 3845 3846 if (!f2fs_sb_has_blkzoned(sbi)) 3847 return 0; 3848 3849 zone_sectors = bdev_zone_sectors(bdev); 3850 if (sbi->blocks_per_blkz && sbi->blocks_per_blkz != 3851 SECTOR_TO_BLOCK(zone_sectors)) 3852 return -EINVAL; 3853 sbi->blocks_per_blkz = SECTOR_TO_BLOCK(zone_sectors); 3854 FDEV(devi).nr_blkz = div_u64(SECTOR_TO_BLOCK(nr_sectors), 3855 sbi->blocks_per_blkz); 3856 if (nr_sectors & (zone_sectors - 1)) 3857 FDEV(devi).nr_blkz++; 3858 3859 FDEV(devi).blkz_seq = f2fs_kvzalloc(sbi, 3860 BITS_TO_LONGS(FDEV(devi).nr_blkz) 3861 * sizeof(unsigned long), 3862 GFP_KERNEL); 3863 if (!FDEV(devi).blkz_seq) 3864 return -ENOMEM; 3865 3866 rep_zone_arg.sbi = sbi; 3867 rep_zone_arg.dev = &FDEV(devi); 3868 3869 ret = blkdev_report_zones(bdev, 0, BLK_ALL_ZONES, f2fs_report_zone_cb, 3870 &rep_zone_arg); 3871 if (ret < 0) 3872 return ret; 3873 return 0; 3874 } 3875 #endif 3876 3877 /* 3878 * Read f2fs raw super block. 3879 * Because we have two copies of super block, so read both of them 3880 * to get the first valid one. If any one of them is broken, we pass 3881 * them recovery flag back to the caller. 3882 */ 3883 static int read_raw_super_block(struct f2fs_sb_info *sbi, 3884 struct f2fs_super_block **raw_super, 3885 int *valid_super_block, int *recovery) 3886 { 3887 struct super_block *sb = sbi->sb; 3888 int block; 3889 struct buffer_head *bh; 3890 struct f2fs_super_block *super; 3891 int err = 0; 3892 3893 super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL); 3894 if (!super) 3895 return -ENOMEM; 3896 3897 for (block = 0; block < 2; block++) { 3898 bh = sb_bread(sb, block); 3899 if (!bh) { 3900 f2fs_err(sbi, "Unable to read %dth superblock", 3901 block + 1); 3902 err = -EIO; 3903 *recovery = 1; 3904 continue; 3905 } 3906 3907 /* sanity checking of raw super */ 3908 err = sanity_check_raw_super(sbi, bh); 3909 if (err) { 3910 f2fs_err(sbi, "Can't find valid F2FS filesystem in %dth superblock", 3911 block + 1); 3912 brelse(bh); 3913 *recovery = 1; 3914 continue; 3915 } 3916 3917 if (!*raw_super) { 3918 memcpy(super, bh->b_data + F2FS_SUPER_OFFSET, 3919 sizeof(*super)); 3920 *valid_super_block = block; 3921 *raw_super = super; 3922 } 3923 brelse(bh); 3924 } 3925 3926 /* No valid superblock */ 3927 if (!*raw_super) 3928 kfree(super); 3929 else 3930 err = 0; 3931 3932 return err; 3933 } 3934 3935 int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover) 3936 { 3937 struct buffer_head *bh; 3938 __u32 crc = 0; 3939 int err; 3940 3941 if ((recover && f2fs_readonly(sbi->sb)) || 3942 f2fs_hw_is_readonly(sbi)) { 3943 set_sbi_flag(sbi, SBI_NEED_SB_WRITE); 3944 return -EROFS; 3945 } 3946 3947 /* we should update superblock crc here */ 3948 if (!recover && f2fs_sb_has_sb_chksum(sbi)) { 3949 crc = f2fs_crc32(sbi, F2FS_RAW_SUPER(sbi), 3950 offsetof(struct f2fs_super_block, crc)); 3951 F2FS_RAW_SUPER(sbi)->crc = cpu_to_le32(crc); 3952 } 3953 3954 /* write back-up superblock first */ 3955 bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1); 3956 if (!bh) 3957 return -EIO; 3958 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi)); 3959 brelse(bh); 3960 3961 /* if we are in recovery path, skip writing valid superblock */ 3962 if (recover || err) 3963 return err; 3964 3965 /* write current valid superblock */ 3966 bh = sb_bread(sbi->sb, sbi->valid_super_block); 3967 if (!bh) 3968 return -EIO; 3969 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi)); 3970 brelse(bh); 3971 return err; 3972 } 3973 3974 static void save_stop_reason(struct f2fs_sb_info *sbi, unsigned char reason) 3975 { 3976 unsigned long flags; 3977 3978 spin_lock_irqsave(&sbi->error_lock, flags); 3979 if (sbi->stop_reason[reason] < GENMASK(BITS_PER_BYTE - 1, 0)) 3980 sbi->stop_reason[reason]++; 3981 spin_unlock_irqrestore(&sbi->error_lock, flags); 3982 } 3983 3984 static void f2fs_record_stop_reason(struct f2fs_sb_info *sbi) 3985 { 3986 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 3987 unsigned long flags; 3988 int err; 3989 3990 f2fs_down_write(&sbi->sb_lock); 3991 3992 spin_lock_irqsave(&sbi->error_lock, flags); 3993 if (sbi->error_dirty) { 3994 memcpy(F2FS_RAW_SUPER(sbi)->s_errors, sbi->errors, 3995 MAX_F2FS_ERRORS); 3996 sbi->error_dirty = false; 3997 } 3998 memcpy(raw_super->s_stop_reason, sbi->stop_reason, MAX_STOP_REASON); 3999 spin_unlock_irqrestore(&sbi->error_lock, flags); 4000 4001 err = f2fs_commit_super(sbi, false); 4002 4003 f2fs_up_write(&sbi->sb_lock); 4004 if (err) 4005 f2fs_err(sbi, "f2fs_commit_super fails to record err:%d", err); 4006 } 4007 4008 void f2fs_save_errors(struct f2fs_sb_info *sbi, unsigned char flag) 4009 { 4010 unsigned long flags; 4011 4012 spin_lock_irqsave(&sbi->error_lock, flags); 4013 if (!test_bit(flag, (unsigned long *)sbi->errors)) { 4014 set_bit(flag, (unsigned long *)sbi->errors); 4015 sbi->error_dirty = true; 4016 } 4017 spin_unlock_irqrestore(&sbi->error_lock, flags); 4018 } 4019 4020 static bool f2fs_update_errors(struct f2fs_sb_info *sbi) 4021 { 4022 unsigned long flags; 4023 bool need_update = false; 4024 4025 spin_lock_irqsave(&sbi->error_lock, flags); 4026 if (sbi->error_dirty) { 4027 memcpy(F2FS_RAW_SUPER(sbi)->s_errors, sbi->errors, 4028 MAX_F2FS_ERRORS); 4029 sbi->error_dirty = false; 4030 need_update = true; 4031 } 4032 spin_unlock_irqrestore(&sbi->error_lock, flags); 4033 4034 return need_update; 4035 } 4036 4037 static void f2fs_record_errors(struct f2fs_sb_info *sbi, unsigned char error) 4038 { 4039 int err; 4040 4041 f2fs_down_write(&sbi->sb_lock); 4042 4043 if (!f2fs_update_errors(sbi)) 4044 goto out_unlock; 4045 4046 err = f2fs_commit_super(sbi, false); 4047 if (err) 4048 f2fs_err(sbi, "f2fs_commit_super fails to record errors:%u, err:%d", 4049 error, err); 4050 out_unlock: 4051 f2fs_up_write(&sbi->sb_lock); 4052 } 4053 4054 void f2fs_handle_error(struct f2fs_sb_info *sbi, unsigned char error) 4055 { 4056 f2fs_save_errors(sbi, error); 4057 f2fs_record_errors(sbi, error); 4058 } 4059 4060 void f2fs_handle_error_async(struct f2fs_sb_info *sbi, unsigned char error) 4061 { 4062 f2fs_save_errors(sbi, error); 4063 4064 if (!sbi->error_dirty) 4065 return; 4066 if (!test_bit(error, (unsigned long *)sbi->errors)) 4067 return; 4068 schedule_work(&sbi->s_error_work); 4069 } 4070 4071 static bool system_going_down(void) 4072 { 4073 return system_state == SYSTEM_HALT || system_state == SYSTEM_POWER_OFF 4074 || system_state == SYSTEM_RESTART; 4075 } 4076 4077 void f2fs_handle_critical_error(struct f2fs_sb_info *sbi, unsigned char reason, 4078 bool irq_context) 4079 { 4080 struct super_block *sb = sbi->sb; 4081 bool shutdown = reason == STOP_CP_REASON_SHUTDOWN; 4082 bool continue_fs = !shutdown && 4083 F2FS_OPTION(sbi).errors == MOUNT_ERRORS_CONTINUE; 4084 4085 set_ckpt_flags(sbi, CP_ERROR_FLAG); 4086 4087 if (!f2fs_hw_is_readonly(sbi)) { 4088 save_stop_reason(sbi, reason); 4089 4090 if (irq_context && !shutdown) 4091 schedule_work(&sbi->s_error_work); 4092 else 4093 f2fs_record_stop_reason(sbi); 4094 } 4095 4096 /* 4097 * We force ERRORS_RO behavior when system is rebooting. Otherwise we 4098 * could panic during 'reboot -f' as the underlying device got already 4099 * disabled. 4100 */ 4101 if (F2FS_OPTION(sbi).errors == MOUNT_ERRORS_PANIC && 4102 !shutdown && !system_going_down() && 4103 !is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN)) 4104 panic("F2FS-fs (device %s): panic forced after error\n", 4105 sb->s_id); 4106 4107 if (shutdown) 4108 set_sbi_flag(sbi, SBI_IS_SHUTDOWN); 4109 4110 /* 4111 * Continue filesystem operators if errors=continue. Should not set 4112 * RO by shutdown, since RO bypasses thaw_super which can hang the 4113 * system. 4114 */ 4115 if (continue_fs || f2fs_readonly(sb) || shutdown) { 4116 f2fs_warn(sbi, "Stopped filesystem due to reason: %d", reason); 4117 return; 4118 } 4119 4120 f2fs_warn(sbi, "Remounting filesystem read-only"); 4121 /* 4122 * Make sure updated value of ->s_mount_flags will be visible before 4123 * ->s_flags update 4124 */ 4125 smp_wmb(); 4126 sb->s_flags |= SB_RDONLY; 4127 } 4128 4129 static void f2fs_record_error_work(struct work_struct *work) 4130 { 4131 struct f2fs_sb_info *sbi = container_of(work, 4132 struct f2fs_sb_info, s_error_work); 4133 4134 f2fs_record_stop_reason(sbi); 4135 } 4136 4137 static int f2fs_scan_devices(struct f2fs_sb_info *sbi) 4138 { 4139 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 4140 unsigned int max_devices = MAX_DEVICES; 4141 unsigned int logical_blksize; 4142 blk_mode_t mode = sb_open_mode(sbi->sb->s_flags); 4143 int i; 4144 4145 /* Initialize single device information */ 4146 if (!RDEV(0).path[0]) { 4147 if (!bdev_is_zoned(sbi->sb->s_bdev)) 4148 return 0; 4149 max_devices = 1; 4150 } 4151 4152 /* 4153 * Initialize multiple devices information, or single 4154 * zoned block device information. 4155 */ 4156 sbi->devs = f2fs_kzalloc(sbi, 4157 array_size(max_devices, 4158 sizeof(struct f2fs_dev_info)), 4159 GFP_KERNEL); 4160 if (!sbi->devs) 4161 return -ENOMEM; 4162 4163 logical_blksize = bdev_logical_block_size(sbi->sb->s_bdev); 4164 sbi->aligned_blksize = true; 4165 4166 for (i = 0; i < max_devices; i++) { 4167 if (i == 0) 4168 FDEV(0).bdev = sbi->sb->s_bdev; 4169 else if (!RDEV(i).path[0]) 4170 break; 4171 4172 if (max_devices > 1) { 4173 /* Multi-device mount */ 4174 memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN); 4175 FDEV(i).total_segments = 4176 le32_to_cpu(RDEV(i).total_segments); 4177 if (i == 0) { 4178 FDEV(i).start_blk = 0; 4179 FDEV(i).end_blk = FDEV(i).start_blk + 4180 (FDEV(i).total_segments << 4181 sbi->log_blocks_per_seg) - 1 + 4182 le32_to_cpu(raw_super->segment0_blkaddr); 4183 } else { 4184 FDEV(i).start_blk = FDEV(i - 1).end_blk + 1; 4185 FDEV(i).end_blk = FDEV(i).start_blk + 4186 (FDEV(i).total_segments << 4187 sbi->log_blocks_per_seg) - 1; 4188 FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path, 4189 mode, sbi->sb, NULL); 4190 } 4191 } 4192 if (IS_ERR(FDEV(i).bdev)) 4193 return PTR_ERR(FDEV(i).bdev); 4194 4195 /* to release errored devices */ 4196 sbi->s_ndevs = i + 1; 4197 4198 if (logical_blksize != bdev_logical_block_size(FDEV(i).bdev)) 4199 sbi->aligned_blksize = false; 4200 4201 #ifdef CONFIG_BLK_DEV_ZONED 4202 if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM && 4203 !f2fs_sb_has_blkzoned(sbi)) { 4204 f2fs_err(sbi, "Zoned block device feature not enabled"); 4205 return -EINVAL; 4206 } 4207 if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) { 4208 if (init_blkz_info(sbi, i)) { 4209 f2fs_err(sbi, "Failed to initialize F2FS blkzone information"); 4210 return -EINVAL; 4211 } 4212 if (max_devices == 1) 4213 break; 4214 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)", 4215 i, FDEV(i).path, 4216 FDEV(i).total_segments, 4217 FDEV(i).start_blk, FDEV(i).end_blk, 4218 bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ? 4219 "Host-aware" : "Host-managed"); 4220 continue; 4221 } 4222 #endif 4223 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x", 4224 i, FDEV(i).path, 4225 FDEV(i).total_segments, 4226 FDEV(i).start_blk, FDEV(i).end_blk); 4227 } 4228 return 0; 4229 } 4230 4231 static int f2fs_setup_casefold(struct f2fs_sb_info *sbi) 4232 { 4233 #if IS_ENABLED(CONFIG_UNICODE) 4234 if (f2fs_sb_has_casefold(sbi) && !sbi->sb->s_encoding) { 4235 const struct f2fs_sb_encodings *encoding_info; 4236 struct unicode_map *encoding; 4237 __u16 encoding_flags; 4238 4239 encoding_info = f2fs_sb_read_encoding(sbi->raw_super); 4240 if (!encoding_info) { 4241 f2fs_err(sbi, 4242 "Encoding requested by superblock is unknown"); 4243 return -EINVAL; 4244 } 4245 4246 encoding_flags = le16_to_cpu(sbi->raw_super->s_encoding_flags); 4247 encoding = utf8_load(encoding_info->version); 4248 if (IS_ERR(encoding)) { 4249 f2fs_err(sbi, 4250 "can't mount with superblock charset: %s-%u.%u.%u " 4251 "not supported by the kernel. flags: 0x%x.", 4252 encoding_info->name, 4253 unicode_major(encoding_info->version), 4254 unicode_minor(encoding_info->version), 4255 unicode_rev(encoding_info->version), 4256 encoding_flags); 4257 return PTR_ERR(encoding); 4258 } 4259 f2fs_info(sbi, "Using encoding defined by superblock: " 4260 "%s-%u.%u.%u with flags 0x%hx", encoding_info->name, 4261 unicode_major(encoding_info->version), 4262 unicode_minor(encoding_info->version), 4263 unicode_rev(encoding_info->version), 4264 encoding_flags); 4265 4266 sbi->sb->s_encoding = encoding; 4267 sbi->sb->s_encoding_flags = encoding_flags; 4268 } 4269 #else 4270 if (f2fs_sb_has_casefold(sbi)) { 4271 f2fs_err(sbi, "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE"); 4272 return -EINVAL; 4273 } 4274 #endif 4275 return 0; 4276 } 4277 4278 static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi) 4279 { 4280 /* adjust parameters according to the volume size */ 4281 if (MAIN_SEGS(sbi) <= SMALL_VOLUME_SEGMENTS) { 4282 if (f2fs_block_unit_discard(sbi)) 4283 SM_I(sbi)->dcc_info->discard_granularity = 4284 MIN_DISCARD_GRANULARITY; 4285 if (!f2fs_lfs_mode(sbi)) 4286 SM_I(sbi)->ipu_policy = BIT(F2FS_IPU_FORCE) | 4287 BIT(F2FS_IPU_HONOR_OPU_WRITE); 4288 } 4289 4290 sbi->readdir_ra = true; 4291 } 4292 4293 static int f2fs_fill_super(struct super_block *sb, void *data, int silent) 4294 { 4295 struct f2fs_sb_info *sbi; 4296 struct f2fs_super_block *raw_super; 4297 struct inode *root; 4298 int err; 4299 bool skip_recovery = false, need_fsck = false; 4300 char *options = NULL; 4301 int recovery, i, valid_super_block; 4302 struct curseg_info *seg_i; 4303 int retry_cnt = 1; 4304 #ifdef CONFIG_QUOTA 4305 bool quota_enabled = false; 4306 #endif 4307 4308 try_onemore: 4309 err = -EINVAL; 4310 raw_super = NULL; 4311 valid_super_block = -1; 4312 recovery = 0; 4313 4314 /* allocate memory for f2fs-specific super block info */ 4315 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL); 4316 if (!sbi) 4317 return -ENOMEM; 4318 4319 sbi->sb = sb; 4320 4321 /* initialize locks within allocated memory */ 4322 init_f2fs_rwsem(&sbi->gc_lock); 4323 mutex_init(&sbi->writepages); 4324 init_f2fs_rwsem(&sbi->cp_global_sem); 4325 init_f2fs_rwsem(&sbi->node_write); 4326 init_f2fs_rwsem(&sbi->node_change); 4327 spin_lock_init(&sbi->stat_lock); 4328 init_f2fs_rwsem(&sbi->cp_rwsem); 4329 init_f2fs_rwsem(&sbi->quota_sem); 4330 init_waitqueue_head(&sbi->cp_wait); 4331 spin_lock_init(&sbi->error_lock); 4332 4333 for (i = 0; i < NR_INODE_TYPE; i++) { 4334 INIT_LIST_HEAD(&sbi->inode_list[i]); 4335 spin_lock_init(&sbi->inode_lock[i]); 4336 } 4337 mutex_init(&sbi->flush_lock); 4338 4339 /* Load the checksum driver */ 4340 sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0); 4341 if (IS_ERR(sbi->s_chksum_driver)) { 4342 f2fs_err(sbi, "Cannot load crc32 driver."); 4343 err = PTR_ERR(sbi->s_chksum_driver); 4344 sbi->s_chksum_driver = NULL; 4345 goto free_sbi; 4346 } 4347 4348 /* set a block size */ 4349 if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) { 4350 f2fs_err(sbi, "unable to set blocksize"); 4351 goto free_sbi; 4352 } 4353 4354 err = read_raw_super_block(sbi, &raw_super, &valid_super_block, 4355 &recovery); 4356 if (err) 4357 goto free_sbi; 4358 4359 sb->s_fs_info = sbi; 4360 sbi->raw_super = raw_super; 4361 4362 INIT_WORK(&sbi->s_error_work, f2fs_record_error_work); 4363 memcpy(sbi->errors, raw_super->s_errors, MAX_F2FS_ERRORS); 4364 memcpy(sbi->stop_reason, raw_super->s_stop_reason, MAX_STOP_REASON); 4365 4366 /* precompute checksum seed for metadata */ 4367 if (f2fs_sb_has_inode_chksum(sbi)) 4368 sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid, 4369 sizeof(raw_super->uuid)); 4370 4371 default_options(sbi, false); 4372 /* parse mount options */ 4373 options = kstrdup((const char *)data, GFP_KERNEL); 4374 if (data && !options) { 4375 err = -ENOMEM; 4376 goto free_sb_buf; 4377 } 4378 4379 err = parse_options(sb, options, false); 4380 if (err) 4381 goto free_options; 4382 4383 sb->s_maxbytes = max_file_blocks(NULL) << 4384 le32_to_cpu(raw_super->log_blocksize); 4385 sb->s_max_links = F2FS_LINK_MAX; 4386 4387 err = f2fs_setup_casefold(sbi); 4388 if (err) 4389 goto free_options; 4390 4391 #ifdef CONFIG_QUOTA 4392 sb->dq_op = &f2fs_quota_operations; 4393 sb->s_qcop = &f2fs_quotactl_ops; 4394 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ; 4395 4396 if (f2fs_sb_has_quota_ino(sbi)) { 4397 for (i = 0; i < MAXQUOTAS; i++) { 4398 if (f2fs_qf_ino(sbi->sb, i)) 4399 sbi->nquota_files++; 4400 } 4401 } 4402 #endif 4403 4404 sb->s_op = &f2fs_sops; 4405 #ifdef CONFIG_FS_ENCRYPTION 4406 sb->s_cop = &f2fs_cryptops; 4407 #endif 4408 #ifdef CONFIG_FS_VERITY 4409 sb->s_vop = &f2fs_verityops; 4410 #endif 4411 sb->s_xattr = f2fs_xattr_handlers; 4412 sb->s_export_op = &f2fs_export_ops; 4413 sb->s_magic = F2FS_SUPER_MAGIC; 4414 sb->s_time_gran = 1; 4415 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) | 4416 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0); 4417 memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid)); 4418 sb->s_iflags |= SB_I_CGROUPWB; 4419 4420 /* init f2fs-specific super block info */ 4421 sbi->valid_super_block = valid_super_block; 4422 4423 /* disallow all the data/node/meta page writes */ 4424 set_sbi_flag(sbi, SBI_POR_DOING); 4425 4426 err = f2fs_init_write_merge_io(sbi); 4427 if (err) 4428 goto free_bio_info; 4429 4430 init_sb_info(sbi); 4431 4432 err = f2fs_init_iostat(sbi); 4433 if (err) 4434 goto free_bio_info; 4435 4436 err = init_percpu_info(sbi); 4437 if (err) 4438 goto free_iostat; 4439 4440 /* init per sbi slab cache */ 4441 err = f2fs_init_xattr_caches(sbi); 4442 if (err) 4443 goto free_percpu; 4444 err = f2fs_init_page_array_cache(sbi); 4445 if (err) 4446 goto free_xattr_cache; 4447 4448 /* get an inode for meta space */ 4449 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi)); 4450 if (IS_ERR(sbi->meta_inode)) { 4451 f2fs_err(sbi, "Failed to read F2FS meta data inode"); 4452 err = PTR_ERR(sbi->meta_inode); 4453 goto free_page_array_cache; 4454 } 4455 4456 err = f2fs_get_valid_checkpoint(sbi); 4457 if (err) { 4458 f2fs_err(sbi, "Failed to get valid F2FS checkpoint"); 4459 goto free_meta_inode; 4460 } 4461 4462 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_QUOTA_NEED_FSCK_FLAG)) 4463 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 4464 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_DISABLED_QUICK_FLAG)) { 4465 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK); 4466 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL; 4467 } 4468 4469 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FSCK_FLAG)) 4470 set_sbi_flag(sbi, SBI_NEED_FSCK); 4471 4472 /* Initialize device list */ 4473 err = f2fs_scan_devices(sbi); 4474 if (err) { 4475 f2fs_err(sbi, "Failed to find devices"); 4476 goto free_devices; 4477 } 4478 4479 err = f2fs_init_post_read_wq(sbi); 4480 if (err) { 4481 f2fs_err(sbi, "Failed to initialize post read workqueue"); 4482 goto free_devices; 4483 } 4484 4485 sbi->total_valid_node_count = 4486 le32_to_cpu(sbi->ckpt->valid_node_count); 4487 percpu_counter_set(&sbi->total_valid_inode_count, 4488 le32_to_cpu(sbi->ckpt->valid_inode_count)); 4489 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count); 4490 sbi->total_valid_block_count = 4491 le64_to_cpu(sbi->ckpt->valid_block_count); 4492 sbi->last_valid_block_count = sbi->total_valid_block_count; 4493 sbi->reserved_blocks = 0; 4494 sbi->current_reserved_blocks = 0; 4495 limit_reserve_root(sbi); 4496 adjust_unusable_cap_perc(sbi); 4497 4498 f2fs_init_extent_cache_info(sbi); 4499 4500 f2fs_init_ino_entry_info(sbi); 4501 4502 f2fs_init_fsync_node_info(sbi); 4503 4504 /* setup checkpoint request control and start checkpoint issue thread */ 4505 f2fs_init_ckpt_req_control(sbi); 4506 if (!f2fs_readonly(sb) && !test_opt(sbi, DISABLE_CHECKPOINT) && 4507 test_opt(sbi, MERGE_CHECKPOINT)) { 4508 err = f2fs_start_ckpt_thread(sbi); 4509 if (err) { 4510 f2fs_err(sbi, 4511 "Failed to start F2FS issue_checkpoint_thread (%d)", 4512 err); 4513 goto stop_ckpt_thread; 4514 } 4515 } 4516 4517 /* setup f2fs internal modules */ 4518 err = f2fs_build_segment_manager(sbi); 4519 if (err) { 4520 f2fs_err(sbi, "Failed to initialize F2FS segment manager (%d)", 4521 err); 4522 goto free_sm; 4523 } 4524 err = f2fs_build_node_manager(sbi); 4525 if (err) { 4526 f2fs_err(sbi, "Failed to initialize F2FS node manager (%d)", 4527 err); 4528 goto free_nm; 4529 } 4530 4531 /* For write statistics */ 4532 sbi->sectors_written_start = f2fs_get_sectors_written(sbi); 4533 4534 /* Read accumulated write IO statistics if exists */ 4535 seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE); 4536 if (__exist_node_summaries(sbi)) 4537 sbi->kbytes_written = 4538 le64_to_cpu(seg_i->journal->info.kbytes_written); 4539 4540 f2fs_build_gc_manager(sbi); 4541 4542 err = f2fs_build_stats(sbi); 4543 if (err) 4544 goto free_nm; 4545 4546 /* get an inode for node space */ 4547 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi)); 4548 if (IS_ERR(sbi->node_inode)) { 4549 f2fs_err(sbi, "Failed to read node inode"); 4550 err = PTR_ERR(sbi->node_inode); 4551 goto free_stats; 4552 } 4553 4554 /* read root inode and dentry */ 4555 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi)); 4556 if (IS_ERR(root)) { 4557 f2fs_err(sbi, "Failed to read root inode"); 4558 err = PTR_ERR(root); 4559 goto free_node_inode; 4560 } 4561 if (!S_ISDIR(root->i_mode) || !root->i_blocks || 4562 !root->i_size || !root->i_nlink) { 4563 iput(root); 4564 err = -EINVAL; 4565 goto free_node_inode; 4566 } 4567 4568 sb->s_root = d_make_root(root); /* allocate root dentry */ 4569 if (!sb->s_root) { 4570 err = -ENOMEM; 4571 goto free_node_inode; 4572 } 4573 4574 err = f2fs_init_compress_inode(sbi); 4575 if (err) 4576 goto free_root_inode; 4577 4578 err = f2fs_register_sysfs(sbi); 4579 if (err) 4580 goto free_compress_inode; 4581 4582 #ifdef CONFIG_QUOTA 4583 /* Enable quota usage during mount */ 4584 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) { 4585 err = f2fs_enable_quotas(sb); 4586 if (err) 4587 f2fs_err(sbi, "Cannot turn on quotas: error %d", err); 4588 } 4589 4590 quota_enabled = f2fs_recover_quota_begin(sbi); 4591 #endif 4592 /* if there are any orphan inodes, free them */ 4593 err = f2fs_recover_orphan_inodes(sbi); 4594 if (err) 4595 goto free_meta; 4596 4597 if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG))) 4598 goto reset_checkpoint; 4599 4600 /* recover fsynced data */ 4601 if (!test_opt(sbi, DISABLE_ROLL_FORWARD) && 4602 !test_opt(sbi, NORECOVERY)) { 4603 /* 4604 * mount should be failed, when device has readonly mode, and 4605 * previous checkpoint was not done by clean system shutdown. 4606 */ 4607 if (f2fs_hw_is_readonly(sbi)) { 4608 if (!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) { 4609 err = f2fs_recover_fsync_data(sbi, true); 4610 if (err > 0) { 4611 err = -EROFS; 4612 f2fs_err(sbi, "Need to recover fsync data, but " 4613 "write access unavailable, please try " 4614 "mount w/ disable_roll_forward or norecovery"); 4615 } 4616 if (err < 0) 4617 goto free_meta; 4618 } 4619 f2fs_info(sbi, "write access unavailable, skipping recovery"); 4620 goto reset_checkpoint; 4621 } 4622 4623 if (need_fsck) 4624 set_sbi_flag(sbi, SBI_NEED_FSCK); 4625 4626 if (skip_recovery) 4627 goto reset_checkpoint; 4628 4629 err = f2fs_recover_fsync_data(sbi, false); 4630 if (err < 0) { 4631 if (err != -ENOMEM) 4632 skip_recovery = true; 4633 need_fsck = true; 4634 f2fs_err(sbi, "Cannot recover all fsync data errno=%d", 4635 err); 4636 goto free_meta; 4637 } 4638 } else { 4639 err = f2fs_recover_fsync_data(sbi, true); 4640 4641 if (!f2fs_readonly(sb) && err > 0) { 4642 err = -EINVAL; 4643 f2fs_err(sbi, "Need to recover fsync data"); 4644 goto free_meta; 4645 } 4646 } 4647 4648 #ifdef CONFIG_QUOTA 4649 f2fs_recover_quota_end(sbi, quota_enabled); 4650 #endif 4651 4652 /* 4653 * If the f2fs is not readonly and fsync data recovery succeeds, 4654 * check zoned block devices' write pointer consistency. 4655 */ 4656 if (!err && !f2fs_readonly(sb) && f2fs_sb_has_blkzoned(sbi)) { 4657 err = f2fs_check_write_pointer(sbi); 4658 if (err) 4659 goto free_meta; 4660 } 4661 4662 reset_checkpoint: 4663 f2fs_init_inmem_curseg(sbi); 4664 4665 /* f2fs_recover_fsync_data() cleared this already */ 4666 clear_sbi_flag(sbi, SBI_POR_DOING); 4667 4668 if (test_opt(sbi, DISABLE_CHECKPOINT)) { 4669 err = f2fs_disable_checkpoint(sbi); 4670 if (err) 4671 goto sync_free_meta; 4672 } else if (is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)) { 4673 f2fs_enable_checkpoint(sbi); 4674 } 4675 4676 /* 4677 * If filesystem is not mounted as read-only then 4678 * do start the gc_thread. 4679 */ 4680 if ((F2FS_OPTION(sbi).bggc_mode != BGGC_MODE_OFF || 4681 test_opt(sbi, GC_MERGE)) && !f2fs_readonly(sb)) { 4682 /* After POR, we can run background GC thread.*/ 4683 err = f2fs_start_gc_thread(sbi); 4684 if (err) 4685 goto sync_free_meta; 4686 } 4687 kvfree(options); 4688 4689 /* recover broken superblock */ 4690 if (recovery) { 4691 err = f2fs_commit_super(sbi, true); 4692 f2fs_info(sbi, "Try to recover %dth superblock, ret: %d", 4693 sbi->valid_super_block ? 1 : 2, err); 4694 } 4695 4696 f2fs_join_shrinker(sbi); 4697 4698 f2fs_tuning_parameters(sbi); 4699 4700 f2fs_notice(sbi, "Mounted with checkpoint version = %llx", 4701 cur_cp_version(F2FS_CKPT(sbi))); 4702 f2fs_update_time(sbi, CP_TIME); 4703 f2fs_update_time(sbi, REQ_TIME); 4704 clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK); 4705 return 0; 4706 4707 sync_free_meta: 4708 /* safe to flush all the data */ 4709 sync_filesystem(sbi->sb); 4710 retry_cnt = 0; 4711 4712 free_meta: 4713 #ifdef CONFIG_QUOTA 4714 f2fs_truncate_quota_inode_pages(sb); 4715 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) 4716 f2fs_quota_off_umount(sbi->sb); 4717 #endif 4718 /* 4719 * Some dirty meta pages can be produced by f2fs_recover_orphan_inodes() 4720 * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg() 4721 * followed by f2fs_write_checkpoint() through f2fs_write_node_pages(), which 4722 * falls into an infinite loop in f2fs_sync_meta_pages(). 4723 */ 4724 truncate_inode_pages_final(META_MAPPING(sbi)); 4725 /* evict some inodes being cached by GC */ 4726 evict_inodes(sb); 4727 f2fs_unregister_sysfs(sbi); 4728 free_compress_inode: 4729 f2fs_destroy_compress_inode(sbi); 4730 free_root_inode: 4731 dput(sb->s_root); 4732 sb->s_root = NULL; 4733 free_node_inode: 4734 f2fs_release_ino_entry(sbi, true); 4735 truncate_inode_pages_final(NODE_MAPPING(sbi)); 4736 iput(sbi->node_inode); 4737 sbi->node_inode = NULL; 4738 free_stats: 4739 f2fs_destroy_stats(sbi); 4740 free_nm: 4741 /* stop discard thread before destroying node manager */ 4742 f2fs_stop_discard_thread(sbi); 4743 f2fs_destroy_node_manager(sbi); 4744 free_sm: 4745 f2fs_destroy_segment_manager(sbi); 4746 stop_ckpt_thread: 4747 f2fs_stop_ckpt_thread(sbi); 4748 /* flush s_error_work before sbi destroy */ 4749 flush_work(&sbi->s_error_work); 4750 f2fs_destroy_post_read_wq(sbi); 4751 free_devices: 4752 destroy_device_list(sbi); 4753 kvfree(sbi->ckpt); 4754 free_meta_inode: 4755 make_bad_inode(sbi->meta_inode); 4756 iput(sbi->meta_inode); 4757 sbi->meta_inode = NULL; 4758 free_page_array_cache: 4759 f2fs_destroy_page_array_cache(sbi); 4760 free_xattr_cache: 4761 f2fs_destroy_xattr_caches(sbi); 4762 free_percpu: 4763 destroy_percpu_info(sbi); 4764 free_iostat: 4765 f2fs_destroy_iostat(sbi); 4766 free_bio_info: 4767 for (i = 0; i < NR_PAGE_TYPE; i++) 4768 kvfree(sbi->write_io[i]); 4769 4770 #if IS_ENABLED(CONFIG_UNICODE) 4771 utf8_unload(sb->s_encoding); 4772 sb->s_encoding = NULL; 4773 #endif 4774 free_options: 4775 #ifdef CONFIG_QUOTA 4776 for (i = 0; i < MAXQUOTAS; i++) 4777 kfree(F2FS_OPTION(sbi).s_qf_names[i]); 4778 #endif 4779 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy); 4780 kvfree(options); 4781 free_sb_buf: 4782 kfree(raw_super); 4783 free_sbi: 4784 if (sbi->s_chksum_driver) 4785 crypto_free_shash(sbi->s_chksum_driver); 4786 kfree(sbi); 4787 4788 /* give only one another chance */ 4789 if (retry_cnt > 0 && skip_recovery) { 4790 retry_cnt--; 4791 shrink_dcache_sb(sb); 4792 goto try_onemore; 4793 } 4794 return err; 4795 } 4796 4797 static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags, 4798 const char *dev_name, void *data) 4799 { 4800 return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super); 4801 } 4802 4803 static void kill_f2fs_super(struct super_block *sb) 4804 { 4805 if (sb->s_root) { 4806 struct f2fs_sb_info *sbi = F2FS_SB(sb); 4807 4808 set_sbi_flag(sbi, SBI_IS_CLOSE); 4809 f2fs_stop_gc_thread(sbi); 4810 f2fs_stop_discard_thread(sbi); 4811 4812 #ifdef CONFIG_F2FS_FS_COMPRESSION 4813 /* 4814 * latter evict_inode() can bypass checking and invalidating 4815 * compress inode cache. 4816 */ 4817 if (test_opt(sbi, COMPRESS_CACHE)) 4818 truncate_inode_pages_final(COMPRESS_MAPPING(sbi)); 4819 #endif 4820 4821 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) || 4822 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) { 4823 struct cp_control cpc = { 4824 .reason = CP_UMOUNT, 4825 }; 4826 stat_inc_cp_call_count(sbi, TOTAL_CALL); 4827 f2fs_write_checkpoint(sbi, &cpc); 4828 } 4829 4830 if (is_sbi_flag_set(sbi, SBI_IS_RECOVERED) && f2fs_readonly(sb)) 4831 sb->s_flags &= ~SB_RDONLY; 4832 } 4833 kill_block_super(sb); 4834 } 4835 4836 static struct file_system_type f2fs_fs_type = { 4837 .owner = THIS_MODULE, 4838 .name = "f2fs", 4839 .mount = f2fs_mount, 4840 .kill_sb = kill_f2fs_super, 4841 .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP, 4842 }; 4843 MODULE_ALIAS_FS("f2fs"); 4844 4845 static int __init init_inodecache(void) 4846 { 4847 f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache", 4848 sizeof(struct f2fs_inode_info), 0, 4849 SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL); 4850 return f2fs_inode_cachep ? 0 : -ENOMEM; 4851 } 4852 4853 static void destroy_inodecache(void) 4854 { 4855 /* 4856 * Make sure all delayed rcu free inodes are flushed before we 4857 * destroy cache. 4858 */ 4859 rcu_barrier(); 4860 kmem_cache_destroy(f2fs_inode_cachep); 4861 } 4862 4863 static int __init init_f2fs_fs(void) 4864 { 4865 int err; 4866 4867 if (PAGE_SIZE != F2FS_BLKSIZE) { 4868 printk("F2FS not supported on PAGE_SIZE(%lu) != %d\n", 4869 PAGE_SIZE, F2FS_BLKSIZE); 4870 return -EINVAL; 4871 } 4872 4873 err = init_inodecache(); 4874 if (err) 4875 goto fail; 4876 err = f2fs_create_node_manager_caches(); 4877 if (err) 4878 goto free_inodecache; 4879 err = f2fs_create_segment_manager_caches(); 4880 if (err) 4881 goto free_node_manager_caches; 4882 err = f2fs_create_checkpoint_caches(); 4883 if (err) 4884 goto free_segment_manager_caches; 4885 err = f2fs_create_recovery_cache(); 4886 if (err) 4887 goto free_checkpoint_caches; 4888 err = f2fs_create_extent_cache(); 4889 if (err) 4890 goto free_recovery_cache; 4891 err = f2fs_create_garbage_collection_cache(); 4892 if (err) 4893 goto free_extent_cache; 4894 err = f2fs_init_sysfs(); 4895 if (err) 4896 goto free_garbage_collection_cache; 4897 err = register_shrinker(&f2fs_shrinker_info, "f2fs-shrinker"); 4898 if (err) 4899 goto free_sysfs; 4900 err = register_filesystem(&f2fs_fs_type); 4901 if (err) 4902 goto free_shrinker; 4903 f2fs_create_root_stats(); 4904 err = f2fs_init_post_read_processing(); 4905 if (err) 4906 goto free_root_stats; 4907 err = f2fs_init_iostat_processing(); 4908 if (err) 4909 goto free_post_read; 4910 err = f2fs_init_bio_entry_cache(); 4911 if (err) 4912 goto free_iostat; 4913 err = f2fs_init_bioset(); 4914 if (err) 4915 goto free_bio_entry_cache; 4916 err = f2fs_init_compress_mempool(); 4917 if (err) 4918 goto free_bioset; 4919 err = f2fs_init_compress_cache(); 4920 if (err) 4921 goto free_compress_mempool; 4922 err = f2fs_create_casefold_cache(); 4923 if (err) 4924 goto free_compress_cache; 4925 return 0; 4926 free_compress_cache: 4927 f2fs_destroy_compress_cache(); 4928 free_compress_mempool: 4929 f2fs_destroy_compress_mempool(); 4930 free_bioset: 4931 f2fs_destroy_bioset(); 4932 free_bio_entry_cache: 4933 f2fs_destroy_bio_entry_cache(); 4934 free_iostat: 4935 f2fs_destroy_iostat_processing(); 4936 free_post_read: 4937 f2fs_destroy_post_read_processing(); 4938 free_root_stats: 4939 f2fs_destroy_root_stats(); 4940 unregister_filesystem(&f2fs_fs_type); 4941 free_shrinker: 4942 unregister_shrinker(&f2fs_shrinker_info); 4943 free_sysfs: 4944 f2fs_exit_sysfs(); 4945 free_garbage_collection_cache: 4946 f2fs_destroy_garbage_collection_cache(); 4947 free_extent_cache: 4948 f2fs_destroy_extent_cache(); 4949 free_recovery_cache: 4950 f2fs_destroy_recovery_cache(); 4951 free_checkpoint_caches: 4952 f2fs_destroy_checkpoint_caches(); 4953 free_segment_manager_caches: 4954 f2fs_destroy_segment_manager_caches(); 4955 free_node_manager_caches: 4956 f2fs_destroy_node_manager_caches(); 4957 free_inodecache: 4958 destroy_inodecache(); 4959 fail: 4960 return err; 4961 } 4962 4963 static void __exit exit_f2fs_fs(void) 4964 { 4965 f2fs_destroy_casefold_cache(); 4966 f2fs_destroy_compress_cache(); 4967 f2fs_destroy_compress_mempool(); 4968 f2fs_destroy_bioset(); 4969 f2fs_destroy_bio_entry_cache(); 4970 f2fs_destroy_iostat_processing(); 4971 f2fs_destroy_post_read_processing(); 4972 f2fs_destroy_root_stats(); 4973 unregister_filesystem(&f2fs_fs_type); 4974 unregister_shrinker(&f2fs_shrinker_info); 4975 f2fs_exit_sysfs(); 4976 f2fs_destroy_garbage_collection_cache(); 4977 f2fs_destroy_extent_cache(); 4978 f2fs_destroy_recovery_cache(); 4979 f2fs_destroy_checkpoint_caches(); 4980 f2fs_destroy_segment_manager_caches(); 4981 f2fs_destroy_node_manager_caches(); 4982 destroy_inodecache(); 4983 } 4984 4985 module_init(init_f2fs_fs) 4986 module_exit(exit_f2fs_fs) 4987 4988 MODULE_AUTHOR("Samsung Electronics's Praesto Team"); 4989 MODULE_DESCRIPTION("Flash Friendly File System"); 4990 MODULE_LICENSE("GPL"); 4991 MODULE_SOFTDEP("pre: crc32"); 4992 4993