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_io_size_bits, 126 Opt_fault_injection, 127 Opt_fault_type, 128 Opt_lazytime, 129 Opt_nolazytime, 130 Opt_quota, 131 Opt_noquota, 132 Opt_usrquota, 133 Opt_grpquota, 134 Opt_prjquota, 135 Opt_usrjquota, 136 Opt_grpjquota, 137 Opt_prjjquota, 138 Opt_offusrjquota, 139 Opt_offgrpjquota, 140 Opt_offprjjquota, 141 Opt_jqfmt_vfsold, 142 Opt_jqfmt_vfsv0, 143 Opt_jqfmt_vfsv1, 144 Opt_alloc, 145 Opt_fsync, 146 Opt_test_dummy_encryption, 147 Opt_inlinecrypt, 148 Opt_checkpoint_disable, 149 Opt_checkpoint_disable_cap, 150 Opt_checkpoint_disable_cap_perc, 151 Opt_checkpoint_enable, 152 Opt_checkpoint_merge, 153 Opt_nocheckpoint_merge, 154 Opt_compress_algorithm, 155 Opt_compress_log_size, 156 Opt_compress_extension, 157 Opt_nocompress_extension, 158 Opt_compress_chksum, 159 Opt_compress_mode, 160 Opt_compress_cache, 161 Opt_atgc, 162 Opt_gc_merge, 163 Opt_nogc_merge, 164 Opt_discard_unit, 165 Opt_memory_mode, 166 Opt_age_extent_cache, 167 Opt_errors, 168 Opt_err, 169 }; 170 171 static match_table_t f2fs_tokens = { 172 {Opt_gc_background, "background_gc=%s"}, 173 {Opt_disable_roll_forward, "disable_roll_forward"}, 174 {Opt_norecovery, "norecovery"}, 175 {Opt_discard, "discard"}, 176 {Opt_nodiscard, "nodiscard"}, 177 {Opt_noheap, "no_heap"}, 178 {Opt_heap, "heap"}, 179 {Opt_user_xattr, "user_xattr"}, 180 {Opt_nouser_xattr, "nouser_xattr"}, 181 {Opt_acl, "acl"}, 182 {Opt_noacl, "noacl"}, 183 {Opt_active_logs, "active_logs=%u"}, 184 {Opt_disable_ext_identify, "disable_ext_identify"}, 185 {Opt_inline_xattr, "inline_xattr"}, 186 {Opt_noinline_xattr, "noinline_xattr"}, 187 {Opt_inline_xattr_size, "inline_xattr_size=%u"}, 188 {Opt_inline_data, "inline_data"}, 189 {Opt_inline_dentry, "inline_dentry"}, 190 {Opt_noinline_dentry, "noinline_dentry"}, 191 {Opt_flush_merge, "flush_merge"}, 192 {Opt_noflush_merge, "noflush_merge"}, 193 {Opt_barrier, "barrier"}, 194 {Opt_nobarrier, "nobarrier"}, 195 {Opt_fastboot, "fastboot"}, 196 {Opt_extent_cache, "extent_cache"}, 197 {Opt_noextent_cache, "noextent_cache"}, 198 {Opt_noinline_data, "noinline_data"}, 199 {Opt_data_flush, "data_flush"}, 200 {Opt_reserve_root, "reserve_root=%u"}, 201 {Opt_resgid, "resgid=%u"}, 202 {Opt_resuid, "resuid=%u"}, 203 {Opt_mode, "mode=%s"}, 204 {Opt_io_size_bits, "io_bits=%u"}, 205 {Opt_fault_injection, "fault_injection=%u"}, 206 {Opt_fault_type, "fault_type=%u"}, 207 {Opt_lazytime, "lazytime"}, 208 {Opt_nolazytime, "nolazytime"}, 209 {Opt_quota, "quota"}, 210 {Opt_noquota, "noquota"}, 211 {Opt_usrquota, "usrquota"}, 212 {Opt_grpquota, "grpquota"}, 213 {Opt_prjquota, "prjquota"}, 214 {Opt_usrjquota, "usrjquota=%s"}, 215 {Opt_grpjquota, "grpjquota=%s"}, 216 {Opt_prjjquota, "prjjquota=%s"}, 217 {Opt_offusrjquota, "usrjquota="}, 218 {Opt_offgrpjquota, "grpjquota="}, 219 {Opt_offprjjquota, "prjjquota="}, 220 {Opt_jqfmt_vfsold, "jqfmt=vfsold"}, 221 {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"}, 222 {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"}, 223 {Opt_alloc, "alloc_mode=%s"}, 224 {Opt_fsync, "fsync_mode=%s"}, 225 {Opt_test_dummy_encryption, "test_dummy_encryption=%s"}, 226 {Opt_test_dummy_encryption, "test_dummy_encryption"}, 227 {Opt_inlinecrypt, "inlinecrypt"}, 228 {Opt_checkpoint_disable, "checkpoint=disable"}, 229 {Opt_checkpoint_disable_cap, "checkpoint=disable:%u"}, 230 {Opt_checkpoint_disable_cap_perc, "checkpoint=disable:%u%%"}, 231 {Opt_checkpoint_enable, "checkpoint=enable"}, 232 {Opt_checkpoint_merge, "checkpoint_merge"}, 233 {Opt_nocheckpoint_merge, "nocheckpoint_merge"}, 234 {Opt_compress_algorithm, "compress_algorithm=%s"}, 235 {Opt_compress_log_size, "compress_log_size=%u"}, 236 {Opt_compress_extension, "compress_extension=%s"}, 237 {Opt_nocompress_extension, "nocompress_extension=%s"}, 238 {Opt_compress_chksum, "compress_chksum"}, 239 {Opt_compress_mode, "compress_mode=%s"}, 240 {Opt_compress_cache, "compress_cache"}, 241 {Opt_atgc, "atgc"}, 242 {Opt_gc_merge, "gc_merge"}, 243 {Opt_nogc_merge, "nogc_merge"}, 244 {Opt_discard_unit, "discard_unit=%s"}, 245 {Opt_memory_mode, "memory=%s"}, 246 {Opt_age_extent_cache, "age_extent_cache"}, 247 {Opt_errors, "errors=%s"}, 248 {Opt_err, NULL}, 249 }; 250 251 void f2fs_printk(struct f2fs_sb_info *sbi, const char *fmt, ...) 252 { 253 struct va_format vaf; 254 va_list args; 255 int level; 256 257 va_start(args, fmt); 258 259 level = printk_get_level(fmt); 260 vaf.fmt = printk_skip_level(fmt); 261 vaf.va = &args; 262 printk("%c%cF2FS-fs (%s): %pV\n", 263 KERN_SOH_ASCII, level, sbi->sb->s_id, &vaf); 264 265 va_end(args); 266 } 267 268 #if IS_ENABLED(CONFIG_UNICODE) 269 static const struct f2fs_sb_encodings { 270 __u16 magic; 271 char *name; 272 unsigned int version; 273 } f2fs_sb_encoding_map[] = { 274 {F2FS_ENC_UTF8_12_1, "utf8", UNICODE_AGE(12, 1, 0)}, 275 }; 276 277 static const struct f2fs_sb_encodings * 278 f2fs_sb_read_encoding(const struct f2fs_super_block *sb) 279 { 280 __u16 magic = le16_to_cpu(sb->s_encoding); 281 int i; 282 283 for (i = 0; i < ARRAY_SIZE(f2fs_sb_encoding_map); i++) 284 if (magic == f2fs_sb_encoding_map[i].magic) 285 return &f2fs_sb_encoding_map[i]; 286 287 return NULL; 288 } 289 290 struct kmem_cache *f2fs_cf_name_slab; 291 static int __init f2fs_create_casefold_cache(void) 292 { 293 f2fs_cf_name_slab = f2fs_kmem_cache_create("f2fs_casefolded_name", 294 F2FS_NAME_LEN); 295 return f2fs_cf_name_slab ? 0 : -ENOMEM; 296 } 297 298 static void f2fs_destroy_casefold_cache(void) 299 { 300 kmem_cache_destroy(f2fs_cf_name_slab); 301 } 302 #else 303 static int __init f2fs_create_casefold_cache(void) { return 0; } 304 static void f2fs_destroy_casefold_cache(void) { } 305 #endif 306 307 static inline void limit_reserve_root(struct f2fs_sb_info *sbi) 308 { 309 block_t limit = min((sbi->user_block_count >> 3), 310 sbi->user_block_count - sbi->reserved_blocks); 311 312 /* limit is 12.5% */ 313 if (test_opt(sbi, RESERVE_ROOT) && 314 F2FS_OPTION(sbi).root_reserved_blocks > limit) { 315 F2FS_OPTION(sbi).root_reserved_blocks = limit; 316 f2fs_info(sbi, "Reduce reserved blocks for root = %u", 317 F2FS_OPTION(sbi).root_reserved_blocks); 318 } 319 if (!test_opt(sbi, RESERVE_ROOT) && 320 (!uid_eq(F2FS_OPTION(sbi).s_resuid, 321 make_kuid(&init_user_ns, F2FS_DEF_RESUID)) || 322 !gid_eq(F2FS_OPTION(sbi).s_resgid, 323 make_kgid(&init_user_ns, F2FS_DEF_RESGID)))) 324 f2fs_info(sbi, "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root", 325 from_kuid_munged(&init_user_ns, 326 F2FS_OPTION(sbi).s_resuid), 327 from_kgid_munged(&init_user_ns, 328 F2FS_OPTION(sbi).s_resgid)); 329 } 330 331 static inline int adjust_reserved_segment(struct f2fs_sb_info *sbi) 332 { 333 unsigned int sec_blks = sbi->blocks_per_seg * sbi->segs_per_sec; 334 unsigned int avg_vblocks; 335 unsigned int wanted_reserved_segments; 336 block_t avail_user_block_count; 337 338 if (!F2FS_IO_ALIGNED(sbi)) 339 return 0; 340 341 /* average valid block count in section in worst case */ 342 avg_vblocks = sec_blks / F2FS_IO_SIZE(sbi); 343 344 /* 345 * we need enough free space when migrating one section in worst case 346 */ 347 wanted_reserved_segments = (F2FS_IO_SIZE(sbi) / avg_vblocks) * 348 reserved_segments(sbi); 349 wanted_reserved_segments -= reserved_segments(sbi); 350 351 avail_user_block_count = sbi->user_block_count - 352 sbi->current_reserved_blocks - 353 F2FS_OPTION(sbi).root_reserved_blocks; 354 355 if (wanted_reserved_segments * sbi->blocks_per_seg > 356 avail_user_block_count) { 357 f2fs_err(sbi, "IO align feature can't grab additional reserved segment: %u, available segments: %u", 358 wanted_reserved_segments, 359 avail_user_block_count >> sbi->log_blocks_per_seg); 360 return -ENOSPC; 361 } 362 363 SM_I(sbi)->additional_reserved_segments = wanted_reserved_segments; 364 365 f2fs_info(sbi, "IO align feature needs additional reserved segment: %u", 366 wanted_reserved_segments); 367 368 return 0; 369 } 370 371 static inline void adjust_unusable_cap_perc(struct f2fs_sb_info *sbi) 372 { 373 if (!F2FS_OPTION(sbi).unusable_cap_perc) 374 return; 375 376 if (F2FS_OPTION(sbi).unusable_cap_perc == 100) 377 F2FS_OPTION(sbi).unusable_cap = sbi->user_block_count; 378 else 379 F2FS_OPTION(sbi).unusable_cap = (sbi->user_block_count / 100) * 380 F2FS_OPTION(sbi).unusable_cap_perc; 381 382 f2fs_info(sbi, "Adjust unusable cap for checkpoint=disable = %u / %u%%", 383 F2FS_OPTION(sbi).unusable_cap, 384 F2FS_OPTION(sbi).unusable_cap_perc); 385 } 386 387 static void init_once(void *foo) 388 { 389 struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo; 390 391 inode_init_once(&fi->vfs_inode); 392 } 393 394 #ifdef CONFIG_QUOTA 395 static const char * const quotatypes[] = INITQFNAMES; 396 #define QTYPE2NAME(t) (quotatypes[t]) 397 static int f2fs_set_qf_name(struct super_block *sb, int qtype, 398 substring_t *args) 399 { 400 struct f2fs_sb_info *sbi = F2FS_SB(sb); 401 char *qname; 402 int ret = -EINVAL; 403 404 if (sb_any_quota_loaded(sb) && !F2FS_OPTION(sbi).s_qf_names[qtype]) { 405 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on"); 406 return -EINVAL; 407 } 408 if (f2fs_sb_has_quota_ino(sbi)) { 409 f2fs_info(sbi, "QUOTA feature is enabled, so ignore qf_name"); 410 return 0; 411 } 412 413 qname = match_strdup(args); 414 if (!qname) { 415 f2fs_err(sbi, "Not enough memory for storing quotafile name"); 416 return -ENOMEM; 417 } 418 if (F2FS_OPTION(sbi).s_qf_names[qtype]) { 419 if (strcmp(F2FS_OPTION(sbi).s_qf_names[qtype], qname) == 0) 420 ret = 0; 421 else 422 f2fs_err(sbi, "%s quota file already specified", 423 QTYPE2NAME(qtype)); 424 goto errout; 425 } 426 if (strchr(qname, '/')) { 427 f2fs_err(sbi, "quotafile must be on filesystem root"); 428 goto errout; 429 } 430 F2FS_OPTION(sbi).s_qf_names[qtype] = qname; 431 set_opt(sbi, QUOTA); 432 return 0; 433 errout: 434 kfree(qname); 435 return ret; 436 } 437 438 static int f2fs_clear_qf_name(struct super_block *sb, int qtype) 439 { 440 struct f2fs_sb_info *sbi = F2FS_SB(sb); 441 442 if (sb_any_quota_loaded(sb) && F2FS_OPTION(sbi).s_qf_names[qtype]) { 443 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on"); 444 return -EINVAL; 445 } 446 kfree(F2FS_OPTION(sbi).s_qf_names[qtype]); 447 F2FS_OPTION(sbi).s_qf_names[qtype] = NULL; 448 return 0; 449 } 450 451 static int f2fs_check_quota_options(struct f2fs_sb_info *sbi) 452 { 453 /* 454 * We do the test below only for project quotas. 'usrquota' and 455 * 'grpquota' mount options are allowed even without quota feature 456 * to support legacy quotas in quota files. 457 */ 458 if (test_opt(sbi, PRJQUOTA) && !f2fs_sb_has_project_quota(sbi)) { 459 f2fs_err(sbi, "Project quota feature not enabled. Cannot enable project quota enforcement."); 460 return -1; 461 } 462 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] || 463 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] || 464 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) { 465 if (test_opt(sbi, USRQUOTA) && 466 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]) 467 clear_opt(sbi, USRQUOTA); 468 469 if (test_opt(sbi, GRPQUOTA) && 470 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]) 471 clear_opt(sbi, GRPQUOTA); 472 473 if (test_opt(sbi, PRJQUOTA) && 474 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) 475 clear_opt(sbi, PRJQUOTA); 476 477 if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) || 478 test_opt(sbi, PRJQUOTA)) { 479 f2fs_err(sbi, "old and new quota format mixing"); 480 return -1; 481 } 482 483 if (!F2FS_OPTION(sbi).s_jquota_fmt) { 484 f2fs_err(sbi, "journaled quota format not specified"); 485 return -1; 486 } 487 } 488 489 if (f2fs_sb_has_quota_ino(sbi) && F2FS_OPTION(sbi).s_jquota_fmt) { 490 f2fs_info(sbi, "QUOTA feature is enabled, so ignore jquota_fmt"); 491 F2FS_OPTION(sbi).s_jquota_fmt = 0; 492 } 493 return 0; 494 } 495 #endif 496 497 static int f2fs_set_test_dummy_encryption(struct super_block *sb, 498 const char *opt, 499 const substring_t *arg, 500 bool is_remount) 501 { 502 struct f2fs_sb_info *sbi = F2FS_SB(sb); 503 struct fs_parameter param = { 504 .type = fs_value_is_string, 505 .string = arg->from ? arg->from : "", 506 }; 507 struct fscrypt_dummy_policy *policy = 508 &F2FS_OPTION(sbi).dummy_enc_policy; 509 int err; 510 511 if (!IS_ENABLED(CONFIG_FS_ENCRYPTION)) { 512 f2fs_warn(sbi, "test_dummy_encryption option not supported"); 513 return -EINVAL; 514 } 515 516 if (!f2fs_sb_has_encrypt(sbi)) { 517 f2fs_err(sbi, "Encrypt feature is off"); 518 return -EINVAL; 519 } 520 521 /* 522 * This mount option is just for testing, and it's not worthwhile to 523 * implement the extra complexity (e.g. RCU protection) that would be 524 * needed to allow it to be set or changed during remount. We do allow 525 * it to be specified during remount, but only if there is no change. 526 */ 527 if (is_remount && !fscrypt_is_dummy_policy_set(policy)) { 528 f2fs_warn(sbi, "Can't set test_dummy_encryption on remount"); 529 return -EINVAL; 530 } 531 532 err = fscrypt_parse_test_dummy_encryption(¶m, policy); 533 if (err) { 534 if (err == -EEXIST) 535 f2fs_warn(sbi, 536 "Can't change test_dummy_encryption on remount"); 537 else if (err == -EINVAL) 538 f2fs_warn(sbi, "Value of option \"%s\" is unrecognized", 539 opt); 540 else 541 f2fs_warn(sbi, "Error processing option \"%s\" [%d]", 542 opt, err); 543 return -EINVAL; 544 } 545 f2fs_warn(sbi, "Test dummy encryption mode enabled"); 546 return 0; 547 } 548 549 #ifdef CONFIG_F2FS_FS_COMPRESSION 550 /* 551 * 1. The same extension name cannot not appear in both compress and non-compress extension 552 * at the same time. 553 * 2. If the compress extension specifies all files, the types specified by the non-compress 554 * extension will be treated as special cases and will not be compressed. 555 * 3. Don't allow the non-compress extension specifies all files. 556 */ 557 static int f2fs_test_compress_extension(struct f2fs_sb_info *sbi) 558 { 559 unsigned char (*ext)[F2FS_EXTENSION_LEN]; 560 unsigned char (*noext)[F2FS_EXTENSION_LEN]; 561 int ext_cnt, noext_cnt, index = 0, no_index = 0; 562 563 ext = F2FS_OPTION(sbi).extensions; 564 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt; 565 noext = F2FS_OPTION(sbi).noextensions; 566 noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt; 567 568 if (!noext_cnt) 569 return 0; 570 571 for (no_index = 0; no_index < noext_cnt; no_index++) { 572 if (!strcasecmp("*", noext[no_index])) { 573 f2fs_info(sbi, "Don't allow the nocompress extension specifies all files"); 574 return -EINVAL; 575 } 576 for (index = 0; index < ext_cnt; index++) { 577 if (!strcasecmp(ext[index], noext[no_index])) { 578 f2fs_info(sbi, "Don't allow the same extension %s appear in both compress and nocompress extension", 579 ext[index]); 580 return -EINVAL; 581 } 582 } 583 } 584 return 0; 585 } 586 587 #ifdef CONFIG_F2FS_FS_LZ4 588 static int f2fs_set_lz4hc_level(struct f2fs_sb_info *sbi, const char *str) 589 { 590 #ifdef CONFIG_F2FS_FS_LZ4HC 591 unsigned int level; 592 593 if (strlen(str) == 3) { 594 F2FS_OPTION(sbi).compress_level = 0; 595 return 0; 596 } 597 598 str += 3; 599 600 if (str[0] != ':') { 601 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>"); 602 return -EINVAL; 603 } 604 if (kstrtouint(str + 1, 10, &level)) 605 return -EINVAL; 606 607 if (!f2fs_is_compress_level_valid(COMPRESS_LZ4, level)) { 608 f2fs_info(sbi, "invalid lz4hc compress level: %d", level); 609 return -EINVAL; 610 } 611 612 F2FS_OPTION(sbi).compress_level = level; 613 return 0; 614 #else 615 if (strlen(str) == 3) { 616 F2FS_OPTION(sbi).compress_level = 0; 617 return 0; 618 } 619 f2fs_info(sbi, "kernel doesn't support lz4hc compression"); 620 return -EINVAL; 621 #endif 622 } 623 #endif 624 625 #ifdef CONFIG_F2FS_FS_ZSTD 626 static int f2fs_set_zstd_level(struct f2fs_sb_info *sbi, const char *str) 627 { 628 unsigned int level; 629 int len = 4; 630 631 if (strlen(str) == len) { 632 F2FS_OPTION(sbi).compress_level = F2FS_ZSTD_DEFAULT_CLEVEL; 633 return 0; 634 } 635 636 str += len; 637 638 if (str[0] != ':') { 639 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>"); 640 return -EINVAL; 641 } 642 if (kstrtouint(str + 1, 10, &level)) 643 return -EINVAL; 644 645 if (!f2fs_is_compress_level_valid(COMPRESS_ZSTD, level)) { 646 f2fs_info(sbi, "invalid zstd compress level: %d", level); 647 return -EINVAL; 648 } 649 650 F2FS_OPTION(sbi).compress_level = level; 651 return 0; 652 } 653 #endif 654 #endif 655 656 static int parse_options(struct super_block *sb, char *options, bool is_remount) 657 { 658 struct f2fs_sb_info *sbi = F2FS_SB(sb); 659 substring_t args[MAX_OPT_ARGS]; 660 #ifdef CONFIG_F2FS_FS_COMPRESSION 661 unsigned char (*ext)[F2FS_EXTENSION_LEN]; 662 unsigned char (*noext)[F2FS_EXTENSION_LEN]; 663 int ext_cnt, noext_cnt; 664 #endif 665 char *p, *name; 666 int arg = 0; 667 kuid_t uid; 668 kgid_t gid; 669 int ret; 670 671 if (!options) 672 goto default_check; 673 674 while ((p = strsep(&options, ",")) != NULL) { 675 int token; 676 677 if (!*p) 678 continue; 679 /* 680 * Initialize args struct so we know whether arg was 681 * found; some options take optional arguments. 682 */ 683 args[0].to = args[0].from = NULL; 684 token = match_token(p, f2fs_tokens, args); 685 686 switch (token) { 687 case Opt_gc_background: 688 name = match_strdup(&args[0]); 689 690 if (!name) 691 return -ENOMEM; 692 if (!strcmp(name, "on")) { 693 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON; 694 } else if (!strcmp(name, "off")) { 695 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_OFF; 696 } else if (!strcmp(name, "sync")) { 697 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_SYNC; 698 } else { 699 kfree(name); 700 return -EINVAL; 701 } 702 kfree(name); 703 break; 704 case Opt_disable_roll_forward: 705 set_opt(sbi, DISABLE_ROLL_FORWARD); 706 break; 707 case Opt_norecovery: 708 /* this option mounts f2fs with ro */ 709 set_opt(sbi, NORECOVERY); 710 if (!f2fs_readonly(sb)) 711 return -EINVAL; 712 break; 713 case Opt_discard: 714 if (!f2fs_hw_support_discard(sbi)) { 715 f2fs_warn(sbi, "device does not support discard"); 716 break; 717 } 718 set_opt(sbi, DISCARD); 719 break; 720 case Opt_nodiscard: 721 if (f2fs_hw_should_discard(sbi)) { 722 f2fs_warn(sbi, "discard is required for zoned block devices"); 723 return -EINVAL; 724 } 725 clear_opt(sbi, DISCARD); 726 break; 727 case Opt_noheap: 728 set_opt(sbi, NOHEAP); 729 break; 730 case Opt_heap: 731 clear_opt(sbi, NOHEAP); 732 break; 733 #ifdef CONFIG_F2FS_FS_XATTR 734 case Opt_user_xattr: 735 set_opt(sbi, XATTR_USER); 736 break; 737 case Opt_nouser_xattr: 738 clear_opt(sbi, XATTR_USER); 739 break; 740 case Opt_inline_xattr: 741 set_opt(sbi, INLINE_XATTR); 742 break; 743 case Opt_noinline_xattr: 744 clear_opt(sbi, INLINE_XATTR); 745 break; 746 case Opt_inline_xattr_size: 747 if (args->from && match_int(args, &arg)) 748 return -EINVAL; 749 set_opt(sbi, INLINE_XATTR_SIZE); 750 F2FS_OPTION(sbi).inline_xattr_size = arg; 751 break; 752 #else 753 case Opt_user_xattr: 754 f2fs_info(sbi, "user_xattr options not supported"); 755 break; 756 case Opt_nouser_xattr: 757 f2fs_info(sbi, "nouser_xattr options not supported"); 758 break; 759 case Opt_inline_xattr: 760 f2fs_info(sbi, "inline_xattr options not supported"); 761 break; 762 case Opt_noinline_xattr: 763 f2fs_info(sbi, "noinline_xattr options not supported"); 764 break; 765 #endif 766 #ifdef CONFIG_F2FS_FS_POSIX_ACL 767 case Opt_acl: 768 set_opt(sbi, POSIX_ACL); 769 break; 770 case Opt_noacl: 771 clear_opt(sbi, POSIX_ACL); 772 break; 773 #else 774 case Opt_acl: 775 f2fs_info(sbi, "acl options not supported"); 776 break; 777 case Opt_noacl: 778 f2fs_info(sbi, "noacl options not supported"); 779 break; 780 #endif 781 case Opt_active_logs: 782 if (args->from && match_int(args, &arg)) 783 return -EINVAL; 784 if (arg != 2 && arg != 4 && 785 arg != NR_CURSEG_PERSIST_TYPE) 786 return -EINVAL; 787 F2FS_OPTION(sbi).active_logs = arg; 788 break; 789 case Opt_disable_ext_identify: 790 set_opt(sbi, DISABLE_EXT_IDENTIFY); 791 break; 792 case Opt_inline_data: 793 set_opt(sbi, INLINE_DATA); 794 break; 795 case Opt_inline_dentry: 796 set_opt(sbi, INLINE_DENTRY); 797 break; 798 case Opt_noinline_dentry: 799 clear_opt(sbi, INLINE_DENTRY); 800 break; 801 case Opt_flush_merge: 802 set_opt(sbi, FLUSH_MERGE); 803 break; 804 case Opt_noflush_merge: 805 clear_opt(sbi, FLUSH_MERGE); 806 break; 807 case Opt_nobarrier: 808 set_opt(sbi, NOBARRIER); 809 break; 810 case Opt_barrier: 811 clear_opt(sbi, NOBARRIER); 812 break; 813 case Opt_fastboot: 814 set_opt(sbi, FASTBOOT); 815 break; 816 case Opt_extent_cache: 817 set_opt(sbi, READ_EXTENT_CACHE); 818 break; 819 case Opt_noextent_cache: 820 clear_opt(sbi, READ_EXTENT_CACHE); 821 break; 822 case Opt_noinline_data: 823 clear_opt(sbi, INLINE_DATA); 824 break; 825 case Opt_data_flush: 826 set_opt(sbi, DATA_FLUSH); 827 break; 828 case Opt_reserve_root: 829 if (args->from && match_int(args, &arg)) 830 return -EINVAL; 831 if (test_opt(sbi, RESERVE_ROOT)) { 832 f2fs_info(sbi, "Preserve previous reserve_root=%u", 833 F2FS_OPTION(sbi).root_reserved_blocks); 834 } else { 835 F2FS_OPTION(sbi).root_reserved_blocks = arg; 836 set_opt(sbi, RESERVE_ROOT); 837 } 838 break; 839 case Opt_resuid: 840 if (args->from && match_int(args, &arg)) 841 return -EINVAL; 842 uid = make_kuid(current_user_ns(), arg); 843 if (!uid_valid(uid)) { 844 f2fs_err(sbi, "Invalid uid value %d", arg); 845 return -EINVAL; 846 } 847 F2FS_OPTION(sbi).s_resuid = uid; 848 break; 849 case Opt_resgid: 850 if (args->from && match_int(args, &arg)) 851 return -EINVAL; 852 gid = make_kgid(current_user_ns(), arg); 853 if (!gid_valid(gid)) { 854 f2fs_err(sbi, "Invalid gid value %d", arg); 855 return -EINVAL; 856 } 857 F2FS_OPTION(sbi).s_resgid = gid; 858 break; 859 case Opt_mode: 860 name = match_strdup(&args[0]); 861 862 if (!name) 863 return -ENOMEM; 864 if (!strcmp(name, "adaptive")) { 865 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE; 866 } else if (!strcmp(name, "lfs")) { 867 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS; 868 } else if (!strcmp(name, "fragment:segment")) { 869 F2FS_OPTION(sbi).fs_mode = FS_MODE_FRAGMENT_SEG; 870 } else if (!strcmp(name, "fragment:block")) { 871 F2FS_OPTION(sbi).fs_mode = FS_MODE_FRAGMENT_BLK; 872 } else { 873 kfree(name); 874 return -EINVAL; 875 } 876 kfree(name); 877 break; 878 case Opt_io_size_bits: 879 if (args->from && match_int(args, &arg)) 880 return -EINVAL; 881 if (arg <= 0 || arg > __ilog2_u32(BIO_MAX_VECS)) { 882 f2fs_warn(sbi, "Not support %ld, larger than %d", 883 BIT(arg), BIO_MAX_VECS); 884 return -EINVAL; 885 } 886 F2FS_OPTION(sbi).write_io_size_bits = arg; 887 break; 888 #ifdef CONFIG_F2FS_FAULT_INJECTION 889 case Opt_fault_injection: 890 if (args->from && match_int(args, &arg)) 891 return -EINVAL; 892 f2fs_build_fault_attr(sbi, arg, F2FS_ALL_FAULT_TYPE); 893 set_opt(sbi, FAULT_INJECTION); 894 break; 895 896 case Opt_fault_type: 897 if (args->from && match_int(args, &arg)) 898 return -EINVAL; 899 f2fs_build_fault_attr(sbi, 0, arg); 900 set_opt(sbi, FAULT_INJECTION); 901 break; 902 #else 903 case Opt_fault_injection: 904 f2fs_info(sbi, "fault_injection options not supported"); 905 break; 906 907 case Opt_fault_type: 908 f2fs_info(sbi, "fault_type options not supported"); 909 break; 910 #endif 911 case Opt_lazytime: 912 sb->s_flags |= SB_LAZYTIME; 913 break; 914 case Opt_nolazytime: 915 sb->s_flags &= ~SB_LAZYTIME; 916 break; 917 #ifdef CONFIG_QUOTA 918 case Opt_quota: 919 case Opt_usrquota: 920 set_opt(sbi, USRQUOTA); 921 break; 922 case Opt_grpquota: 923 set_opt(sbi, GRPQUOTA); 924 break; 925 case Opt_prjquota: 926 set_opt(sbi, PRJQUOTA); 927 break; 928 case Opt_usrjquota: 929 ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]); 930 if (ret) 931 return ret; 932 break; 933 case Opt_grpjquota: 934 ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]); 935 if (ret) 936 return ret; 937 break; 938 case Opt_prjjquota: 939 ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]); 940 if (ret) 941 return ret; 942 break; 943 case Opt_offusrjquota: 944 ret = f2fs_clear_qf_name(sb, USRQUOTA); 945 if (ret) 946 return ret; 947 break; 948 case Opt_offgrpjquota: 949 ret = f2fs_clear_qf_name(sb, GRPQUOTA); 950 if (ret) 951 return ret; 952 break; 953 case Opt_offprjjquota: 954 ret = f2fs_clear_qf_name(sb, PRJQUOTA); 955 if (ret) 956 return ret; 957 break; 958 case Opt_jqfmt_vfsold: 959 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD; 960 break; 961 case Opt_jqfmt_vfsv0: 962 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0; 963 break; 964 case Opt_jqfmt_vfsv1: 965 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1; 966 break; 967 case Opt_noquota: 968 clear_opt(sbi, QUOTA); 969 clear_opt(sbi, USRQUOTA); 970 clear_opt(sbi, GRPQUOTA); 971 clear_opt(sbi, PRJQUOTA); 972 break; 973 #else 974 case Opt_quota: 975 case Opt_usrquota: 976 case Opt_grpquota: 977 case Opt_prjquota: 978 case Opt_usrjquota: 979 case Opt_grpjquota: 980 case Opt_prjjquota: 981 case Opt_offusrjquota: 982 case Opt_offgrpjquota: 983 case Opt_offprjjquota: 984 case Opt_jqfmt_vfsold: 985 case Opt_jqfmt_vfsv0: 986 case Opt_jqfmt_vfsv1: 987 case Opt_noquota: 988 f2fs_info(sbi, "quota operations not supported"); 989 break; 990 #endif 991 case Opt_alloc: 992 name = match_strdup(&args[0]); 993 if (!name) 994 return -ENOMEM; 995 996 if (!strcmp(name, "default")) { 997 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT; 998 } else if (!strcmp(name, "reuse")) { 999 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE; 1000 } else { 1001 kfree(name); 1002 return -EINVAL; 1003 } 1004 kfree(name); 1005 break; 1006 case Opt_fsync: 1007 name = match_strdup(&args[0]); 1008 if (!name) 1009 return -ENOMEM; 1010 if (!strcmp(name, "posix")) { 1011 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX; 1012 } else if (!strcmp(name, "strict")) { 1013 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT; 1014 } else if (!strcmp(name, "nobarrier")) { 1015 F2FS_OPTION(sbi).fsync_mode = 1016 FSYNC_MODE_NOBARRIER; 1017 } else { 1018 kfree(name); 1019 return -EINVAL; 1020 } 1021 kfree(name); 1022 break; 1023 case Opt_test_dummy_encryption: 1024 ret = f2fs_set_test_dummy_encryption(sb, p, &args[0], 1025 is_remount); 1026 if (ret) 1027 return ret; 1028 break; 1029 case Opt_inlinecrypt: 1030 #ifdef CONFIG_FS_ENCRYPTION_INLINE_CRYPT 1031 sb->s_flags |= SB_INLINECRYPT; 1032 #else 1033 f2fs_info(sbi, "inline encryption not supported"); 1034 #endif 1035 break; 1036 case Opt_checkpoint_disable_cap_perc: 1037 if (args->from && match_int(args, &arg)) 1038 return -EINVAL; 1039 if (arg < 0 || arg > 100) 1040 return -EINVAL; 1041 F2FS_OPTION(sbi).unusable_cap_perc = arg; 1042 set_opt(sbi, DISABLE_CHECKPOINT); 1043 break; 1044 case Opt_checkpoint_disable_cap: 1045 if (args->from && match_int(args, &arg)) 1046 return -EINVAL; 1047 F2FS_OPTION(sbi).unusable_cap = arg; 1048 set_opt(sbi, DISABLE_CHECKPOINT); 1049 break; 1050 case Opt_checkpoint_disable: 1051 set_opt(sbi, DISABLE_CHECKPOINT); 1052 break; 1053 case Opt_checkpoint_enable: 1054 clear_opt(sbi, DISABLE_CHECKPOINT); 1055 break; 1056 case Opt_checkpoint_merge: 1057 set_opt(sbi, MERGE_CHECKPOINT); 1058 break; 1059 case Opt_nocheckpoint_merge: 1060 clear_opt(sbi, MERGE_CHECKPOINT); 1061 break; 1062 #ifdef CONFIG_F2FS_FS_COMPRESSION 1063 case Opt_compress_algorithm: 1064 if (!f2fs_sb_has_compression(sbi)) { 1065 f2fs_info(sbi, "Image doesn't support compression"); 1066 break; 1067 } 1068 name = match_strdup(&args[0]); 1069 if (!name) 1070 return -ENOMEM; 1071 if (!strcmp(name, "lzo")) { 1072 #ifdef CONFIG_F2FS_FS_LZO 1073 F2FS_OPTION(sbi).compress_level = 0; 1074 F2FS_OPTION(sbi).compress_algorithm = 1075 COMPRESS_LZO; 1076 #else 1077 f2fs_info(sbi, "kernel doesn't support lzo compression"); 1078 #endif 1079 } else if (!strncmp(name, "lz4", 3)) { 1080 #ifdef CONFIG_F2FS_FS_LZ4 1081 ret = f2fs_set_lz4hc_level(sbi, name); 1082 if (ret) { 1083 kfree(name); 1084 return -EINVAL; 1085 } 1086 F2FS_OPTION(sbi).compress_algorithm = 1087 COMPRESS_LZ4; 1088 #else 1089 f2fs_info(sbi, "kernel doesn't support lz4 compression"); 1090 #endif 1091 } else if (!strncmp(name, "zstd", 4)) { 1092 #ifdef CONFIG_F2FS_FS_ZSTD 1093 ret = f2fs_set_zstd_level(sbi, name); 1094 if (ret) { 1095 kfree(name); 1096 return -EINVAL; 1097 } 1098 F2FS_OPTION(sbi).compress_algorithm = 1099 COMPRESS_ZSTD; 1100 #else 1101 f2fs_info(sbi, "kernel doesn't support zstd compression"); 1102 #endif 1103 } else if (!strcmp(name, "lzo-rle")) { 1104 #ifdef CONFIG_F2FS_FS_LZORLE 1105 F2FS_OPTION(sbi).compress_level = 0; 1106 F2FS_OPTION(sbi).compress_algorithm = 1107 COMPRESS_LZORLE; 1108 #else 1109 f2fs_info(sbi, "kernel doesn't support lzorle compression"); 1110 #endif 1111 } else { 1112 kfree(name); 1113 return -EINVAL; 1114 } 1115 kfree(name); 1116 break; 1117 case Opt_compress_log_size: 1118 if (!f2fs_sb_has_compression(sbi)) { 1119 f2fs_info(sbi, "Image doesn't support compression"); 1120 break; 1121 } 1122 if (args->from && match_int(args, &arg)) 1123 return -EINVAL; 1124 if (arg < MIN_COMPRESS_LOG_SIZE || 1125 arg > MAX_COMPRESS_LOG_SIZE) { 1126 f2fs_err(sbi, 1127 "Compress cluster log size is out of range"); 1128 return -EINVAL; 1129 } 1130 F2FS_OPTION(sbi).compress_log_size = arg; 1131 break; 1132 case Opt_compress_extension: 1133 if (!f2fs_sb_has_compression(sbi)) { 1134 f2fs_info(sbi, "Image doesn't support compression"); 1135 break; 1136 } 1137 name = match_strdup(&args[0]); 1138 if (!name) 1139 return -ENOMEM; 1140 1141 ext = F2FS_OPTION(sbi).extensions; 1142 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt; 1143 1144 if (strlen(name) >= F2FS_EXTENSION_LEN || 1145 ext_cnt >= COMPRESS_EXT_NUM) { 1146 f2fs_err(sbi, 1147 "invalid extension length/number"); 1148 kfree(name); 1149 return -EINVAL; 1150 } 1151 1152 strcpy(ext[ext_cnt], name); 1153 F2FS_OPTION(sbi).compress_ext_cnt++; 1154 kfree(name); 1155 break; 1156 case Opt_nocompress_extension: 1157 if (!f2fs_sb_has_compression(sbi)) { 1158 f2fs_info(sbi, "Image doesn't support compression"); 1159 break; 1160 } 1161 name = match_strdup(&args[0]); 1162 if (!name) 1163 return -ENOMEM; 1164 1165 noext = F2FS_OPTION(sbi).noextensions; 1166 noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt; 1167 1168 if (strlen(name) >= F2FS_EXTENSION_LEN || 1169 noext_cnt >= COMPRESS_EXT_NUM) { 1170 f2fs_err(sbi, 1171 "invalid extension length/number"); 1172 kfree(name); 1173 return -EINVAL; 1174 } 1175 1176 strcpy(noext[noext_cnt], name); 1177 F2FS_OPTION(sbi).nocompress_ext_cnt++; 1178 kfree(name); 1179 break; 1180 case Opt_compress_chksum: 1181 if (!f2fs_sb_has_compression(sbi)) { 1182 f2fs_info(sbi, "Image doesn't support compression"); 1183 break; 1184 } 1185 F2FS_OPTION(sbi).compress_chksum = true; 1186 break; 1187 case Opt_compress_mode: 1188 if (!f2fs_sb_has_compression(sbi)) { 1189 f2fs_info(sbi, "Image doesn't support compression"); 1190 break; 1191 } 1192 name = match_strdup(&args[0]); 1193 if (!name) 1194 return -ENOMEM; 1195 if (!strcmp(name, "fs")) { 1196 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS; 1197 } else if (!strcmp(name, "user")) { 1198 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_USER; 1199 } else { 1200 kfree(name); 1201 return -EINVAL; 1202 } 1203 kfree(name); 1204 break; 1205 case Opt_compress_cache: 1206 if (!f2fs_sb_has_compression(sbi)) { 1207 f2fs_info(sbi, "Image doesn't support compression"); 1208 break; 1209 } 1210 set_opt(sbi, COMPRESS_CACHE); 1211 break; 1212 #else 1213 case Opt_compress_algorithm: 1214 case Opt_compress_log_size: 1215 case Opt_compress_extension: 1216 case Opt_nocompress_extension: 1217 case Opt_compress_chksum: 1218 case Opt_compress_mode: 1219 case Opt_compress_cache: 1220 f2fs_info(sbi, "compression options not supported"); 1221 break; 1222 #endif 1223 case Opt_atgc: 1224 set_opt(sbi, ATGC); 1225 break; 1226 case Opt_gc_merge: 1227 set_opt(sbi, GC_MERGE); 1228 break; 1229 case Opt_nogc_merge: 1230 clear_opt(sbi, GC_MERGE); 1231 break; 1232 case Opt_discard_unit: 1233 name = match_strdup(&args[0]); 1234 if (!name) 1235 return -ENOMEM; 1236 if (!strcmp(name, "block")) { 1237 F2FS_OPTION(sbi).discard_unit = 1238 DISCARD_UNIT_BLOCK; 1239 } else if (!strcmp(name, "segment")) { 1240 F2FS_OPTION(sbi).discard_unit = 1241 DISCARD_UNIT_SEGMENT; 1242 } else if (!strcmp(name, "section")) { 1243 F2FS_OPTION(sbi).discard_unit = 1244 DISCARD_UNIT_SECTION; 1245 } else { 1246 kfree(name); 1247 return -EINVAL; 1248 } 1249 kfree(name); 1250 break; 1251 case Opt_memory_mode: 1252 name = match_strdup(&args[0]); 1253 if (!name) 1254 return -ENOMEM; 1255 if (!strcmp(name, "normal")) { 1256 F2FS_OPTION(sbi).memory_mode = 1257 MEMORY_MODE_NORMAL; 1258 } else if (!strcmp(name, "low")) { 1259 F2FS_OPTION(sbi).memory_mode = 1260 MEMORY_MODE_LOW; 1261 } else { 1262 kfree(name); 1263 return -EINVAL; 1264 } 1265 kfree(name); 1266 break; 1267 case Opt_age_extent_cache: 1268 set_opt(sbi, AGE_EXTENT_CACHE); 1269 break; 1270 case Opt_errors: 1271 name = match_strdup(&args[0]); 1272 if (!name) 1273 return -ENOMEM; 1274 if (!strcmp(name, "remount-ro")) { 1275 F2FS_OPTION(sbi).errors = 1276 MOUNT_ERRORS_READONLY; 1277 } else if (!strcmp(name, "continue")) { 1278 F2FS_OPTION(sbi).errors = 1279 MOUNT_ERRORS_CONTINUE; 1280 } else if (!strcmp(name, "panic")) { 1281 F2FS_OPTION(sbi).errors = 1282 MOUNT_ERRORS_PANIC; 1283 } else { 1284 kfree(name); 1285 return -EINVAL; 1286 } 1287 kfree(name); 1288 break; 1289 default: 1290 f2fs_err(sbi, "Unrecognized mount option \"%s\" or missing value", 1291 p); 1292 return -EINVAL; 1293 } 1294 } 1295 default_check: 1296 #ifdef CONFIG_QUOTA 1297 if (f2fs_check_quota_options(sbi)) 1298 return -EINVAL; 1299 #else 1300 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sbi->sb)) { 1301 f2fs_info(sbi, "Filesystem with quota feature cannot be mounted RDWR without CONFIG_QUOTA"); 1302 return -EINVAL; 1303 } 1304 if (f2fs_sb_has_project_quota(sbi) && !f2fs_readonly(sbi->sb)) { 1305 f2fs_err(sbi, "Filesystem with project quota feature cannot be mounted RDWR without CONFIG_QUOTA"); 1306 return -EINVAL; 1307 } 1308 #endif 1309 #if !IS_ENABLED(CONFIG_UNICODE) 1310 if (f2fs_sb_has_casefold(sbi)) { 1311 f2fs_err(sbi, 1312 "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE"); 1313 return -EINVAL; 1314 } 1315 #endif 1316 /* 1317 * The BLKZONED feature indicates that the drive was formatted with 1318 * zone alignment optimization. This is optional for host-aware 1319 * devices, but mandatory for host-managed zoned block devices. 1320 */ 1321 if (f2fs_sb_has_blkzoned(sbi)) { 1322 #ifdef CONFIG_BLK_DEV_ZONED 1323 if (F2FS_OPTION(sbi).discard_unit != 1324 DISCARD_UNIT_SECTION) { 1325 f2fs_info(sbi, "Zoned block device doesn't need small discard, set discard_unit=section by default"); 1326 F2FS_OPTION(sbi).discard_unit = 1327 DISCARD_UNIT_SECTION; 1328 } 1329 1330 if (F2FS_OPTION(sbi).fs_mode != FS_MODE_LFS) { 1331 f2fs_info(sbi, "Only lfs mode is allowed with zoned block device feature"); 1332 return -EINVAL; 1333 } 1334 #else 1335 f2fs_err(sbi, "Zoned block device support is not enabled"); 1336 return -EINVAL; 1337 #endif 1338 } 1339 1340 #ifdef CONFIG_F2FS_FS_COMPRESSION 1341 if (f2fs_test_compress_extension(sbi)) { 1342 f2fs_err(sbi, "invalid compress or nocompress extension"); 1343 return -EINVAL; 1344 } 1345 #endif 1346 1347 if (F2FS_IO_SIZE_BITS(sbi) && !f2fs_lfs_mode(sbi)) { 1348 f2fs_err(sbi, "Should set mode=lfs with %luKB-sized IO", 1349 F2FS_IO_SIZE_KB(sbi)); 1350 return -EINVAL; 1351 } 1352 1353 if (test_opt(sbi, INLINE_XATTR_SIZE)) { 1354 int min_size, max_size; 1355 1356 if (!f2fs_sb_has_extra_attr(sbi) || 1357 !f2fs_sb_has_flexible_inline_xattr(sbi)) { 1358 f2fs_err(sbi, "extra_attr or flexible_inline_xattr feature is off"); 1359 return -EINVAL; 1360 } 1361 if (!test_opt(sbi, INLINE_XATTR)) { 1362 f2fs_err(sbi, "inline_xattr_size option should be set with inline_xattr option"); 1363 return -EINVAL; 1364 } 1365 1366 min_size = MIN_INLINE_XATTR_SIZE; 1367 max_size = MAX_INLINE_XATTR_SIZE; 1368 1369 if (F2FS_OPTION(sbi).inline_xattr_size < min_size || 1370 F2FS_OPTION(sbi).inline_xattr_size > max_size) { 1371 f2fs_err(sbi, "inline xattr size is out of range: %d ~ %d", 1372 min_size, max_size); 1373 return -EINVAL; 1374 } 1375 } 1376 1377 if (test_opt(sbi, DISABLE_CHECKPOINT) && f2fs_lfs_mode(sbi)) { 1378 f2fs_err(sbi, "LFS is not compatible with checkpoint=disable"); 1379 return -EINVAL; 1380 } 1381 1382 if (test_opt(sbi, ATGC) && f2fs_lfs_mode(sbi)) { 1383 f2fs_err(sbi, "LFS is not compatible with ATGC"); 1384 return -EINVAL; 1385 } 1386 1387 if (f2fs_is_readonly(sbi) && test_opt(sbi, FLUSH_MERGE)) { 1388 f2fs_err(sbi, "FLUSH_MERGE not compatible with readonly mode"); 1389 return -EINVAL; 1390 } 1391 1392 if (f2fs_sb_has_readonly(sbi) && !f2fs_readonly(sbi->sb)) { 1393 f2fs_err(sbi, "Allow to mount readonly mode only"); 1394 return -EROFS; 1395 } 1396 return 0; 1397 } 1398 1399 static struct inode *f2fs_alloc_inode(struct super_block *sb) 1400 { 1401 struct f2fs_inode_info *fi; 1402 1403 if (time_to_inject(F2FS_SB(sb), FAULT_SLAB_ALLOC)) 1404 return NULL; 1405 1406 fi = alloc_inode_sb(sb, f2fs_inode_cachep, GFP_F2FS_ZERO); 1407 if (!fi) 1408 return NULL; 1409 1410 init_once((void *) fi); 1411 1412 /* Initialize f2fs-specific inode info */ 1413 atomic_set(&fi->dirty_pages, 0); 1414 atomic_set(&fi->i_compr_blocks, 0); 1415 init_f2fs_rwsem(&fi->i_sem); 1416 spin_lock_init(&fi->i_size_lock); 1417 INIT_LIST_HEAD(&fi->dirty_list); 1418 INIT_LIST_HEAD(&fi->gdirty_list); 1419 init_f2fs_rwsem(&fi->i_gc_rwsem[READ]); 1420 init_f2fs_rwsem(&fi->i_gc_rwsem[WRITE]); 1421 init_f2fs_rwsem(&fi->i_xattr_sem); 1422 1423 /* Will be used by directory only */ 1424 fi->i_dir_level = F2FS_SB(sb)->dir_level; 1425 1426 return &fi->vfs_inode; 1427 } 1428 1429 static int f2fs_drop_inode(struct inode *inode) 1430 { 1431 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1432 int ret; 1433 1434 /* 1435 * during filesystem shutdown, if checkpoint is disabled, 1436 * drop useless meta/node dirty pages. 1437 */ 1438 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) { 1439 if (inode->i_ino == F2FS_NODE_INO(sbi) || 1440 inode->i_ino == F2FS_META_INO(sbi)) { 1441 trace_f2fs_drop_inode(inode, 1); 1442 return 1; 1443 } 1444 } 1445 1446 /* 1447 * This is to avoid a deadlock condition like below. 1448 * writeback_single_inode(inode) 1449 * - f2fs_write_data_page 1450 * - f2fs_gc -> iput -> evict 1451 * - inode_wait_for_writeback(inode) 1452 */ 1453 if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) { 1454 if (!inode->i_nlink && !is_bad_inode(inode)) { 1455 /* to avoid evict_inode call simultaneously */ 1456 atomic_inc(&inode->i_count); 1457 spin_unlock(&inode->i_lock); 1458 1459 /* should remain fi->extent_tree for writepage */ 1460 f2fs_destroy_extent_node(inode); 1461 1462 sb_start_intwrite(inode->i_sb); 1463 f2fs_i_size_write(inode, 0); 1464 1465 f2fs_submit_merged_write_cond(F2FS_I_SB(inode), 1466 inode, NULL, 0, DATA); 1467 truncate_inode_pages_final(inode->i_mapping); 1468 1469 if (F2FS_HAS_BLOCKS(inode)) 1470 f2fs_truncate(inode); 1471 1472 sb_end_intwrite(inode->i_sb); 1473 1474 spin_lock(&inode->i_lock); 1475 atomic_dec(&inode->i_count); 1476 } 1477 trace_f2fs_drop_inode(inode, 0); 1478 return 0; 1479 } 1480 ret = generic_drop_inode(inode); 1481 if (!ret) 1482 ret = fscrypt_drop_inode(inode); 1483 trace_f2fs_drop_inode(inode, ret); 1484 return ret; 1485 } 1486 1487 int f2fs_inode_dirtied(struct inode *inode, bool sync) 1488 { 1489 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1490 int ret = 0; 1491 1492 spin_lock(&sbi->inode_lock[DIRTY_META]); 1493 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) { 1494 ret = 1; 1495 } else { 1496 set_inode_flag(inode, FI_DIRTY_INODE); 1497 stat_inc_dirty_inode(sbi, DIRTY_META); 1498 } 1499 if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) { 1500 list_add_tail(&F2FS_I(inode)->gdirty_list, 1501 &sbi->inode_list[DIRTY_META]); 1502 inc_page_count(sbi, F2FS_DIRTY_IMETA); 1503 } 1504 spin_unlock(&sbi->inode_lock[DIRTY_META]); 1505 return ret; 1506 } 1507 1508 void f2fs_inode_synced(struct inode *inode) 1509 { 1510 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1511 1512 spin_lock(&sbi->inode_lock[DIRTY_META]); 1513 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) { 1514 spin_unlock(&sbi->inode_lock[DIRTY_META]); 1515 return; 1516 } 1517 if (!list_empty(&F2FS_I(inode)->gdirty_list)) { 1518 list_del_init(&F2FS_I(inode)->gdirty_list); 1519 dec_page_count(sbi, F2FS_DIRTY_IMETA); 1520 } 1521 clear_inode_flag(inode, FI_DIRTY_INODE); 1522 clear_inode_flag(inode, FI_AUTO_RECOVER); 1523 stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META); 1524 spin_unlock(&sbi->inode_lock[DIRTY_META]); 1525 } 1526 1527 /* 1528 * f2fs_dirty_inode() is called from __mark_inode_dirty() 1529 * 1530 * We should call set_dirty_inode to write the dirty inode through write_inode. 1531 */ 1532 static void f2fs_dirty_inode(struct inode *inode, int flags) 1533 { 1534 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1535 1536 if (inode->i_ino == F2FS_NODE_INO(sbi) || 1537 inode->i_ino == F2FS_META_INO(sbi)) 1538 return; 1539 1540 if (is_inode_flag_set(inode, FI_AUTO_RECOVER)) 1541 clear_inode_flag(inode, FI_AUTO_RECOVER); 1542 1543 f2fs_inode_dirtied(inode, false); 1544 } 1545 1546 static void f2fs_free_inode(struct inode *inode) 1547 { 1548 fscrypt_free_inode(inode); 1549 kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode)); 1550 } 1551 1552 static void destroy_percpu_info(struct f2fs_sb_info *sbi) 1553 { 1554 percpu_counter_destroy(&sbi->total_valid_inode_count); 1555 percpu_counter_destroy(&sbi->rf_node_block_count); 1556 percpu_counter_destroy(&sbi->alloc_valid_block_count); 1557 } 1558 1559 static void destroy_device_list(struct f2fs_sb_info *sbi) 1560 { 1561 int i; 1562 1563 for (i = 0; i < sbi->s_ndevs; i++) { 1564 if (i > 0) 1565 blkdev_put(FDEV(i).bdev, sbi->sb); 1566 #ifdef CONFIG_BLK_DEV_ZONED 1567 kvfree(FDEV(i).blkz_seq); 1568 #endif 1569 } 1570 kvfree(sbi->devs); 1571 } 1572 1573 static void f2fs_put_super(struct super_block *sb) 1574 { 1575 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1576 int i; 1577 int err = 0; 1578 bool done; 1579 1580 /* unregister procfs/sysfs entries in advance to avoid race case */ 1581 f2fs_unregister_sysfs(sbi); 1582 1583 f2fs_quota_off_umount(sb); 1584 1585 /* prevent remaining shrinker jobs */ 1586 mutex_lock(&sbi->umount_mutex); 1587 1588 /* 1589 * flush all issued checkpoints and stop checkpoint issue thread. 1590 * after then, all checkpoints should be done by each process context. 1591 */ 1592 f2fs_stop_ckpt_thread(sbi); 1593 1594 /* 1595 * We don't need to do checkpoint when superblock is clean. 1596 * But, the previous checkpoint was not done by umount, it needs to do 1597 * clean checkpoint again. 1598 */ 1599 if ((is_sbi_flag_set(sbi, SBI_IS_DIRTY) || 1600 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))) { 1601 struct cp_control cpc = { 1602 .reason = CP_UMOUNT, 1603 }; 1604 stat_inc_cp_call_count(sbi, TOTAL_CALL); 1605 err = f2fs_write_checkpoint(sbi, &cpc); 1606 } 1607 1608 /* be sure to wait for any on-going discard commands */ 1609 done = f2fs_issue_discard_timeout(sbi); 1610 if (f2fs_realtime_discard_enable(sbi) && !sbi->discard_blks && done) { 1611 struct cp_control cpc = { 1612 .reason = CP_UMOUNT | CP_TRIMMED, 1613 }; 1614 stat_inc_cp_call_count(sbi, TOTAL_CALL); 1615 err = f2fs_write_checkpoint(sbi, &cpc); 1616 } 1617 1618 /* 1619 * normally superblock is clean, so we need to release this. 1620 * In addition, EIO will skip do checkpoint, we need this as well. 1621 */ 1622 f2fs_release_ino_entry(sbi, true); 1623 1624 f2fs_leave_shrinker(sbi); 1625 mutex_unlock(&sbi->umount_mutex); 1626 1627 /* our cp_error case, we can wait for any writeback page */ 1628 f2fs_flush_merged_writes(sbi); 1629 1630 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA); 1631 1632 if (err) { 1633 truncate_inode_pages_final(NODE_MAPPING(sbi)); 1634 truncate_inode_pages_final(META_MAPPING(sbi)); 1635 } 1636 1637 for (i = 0; i < NR_COUNT_TYPE; i++) { 1638 if (!get_pages(sbi, i)) 1639 continue; 1640 f2fs_err(sbi, "detect filesystem reference count leak during " 1641 "umount, type: %d, count: %lld", i, get_pages(sbi, i)); 1642 f2fs_bug_on(sbi, 1); 1643 } 1644 1645 f2fs_bug_on(sbi, sbi->fsync_node_num); 1646 1647 f2fs_destroy_compress_inode(sbi); 1648 1649 iput(sbi->node_inode); 1650 sbi->node_inode = NULL; 1651 1652 iput(sbi->meta_inode); 1653 sbi->meta_inode = NULL; 1654 1655 /* 1656 * iput() can update stat information, if f2fs_write_checkpoint() 1657 * above failed with error. 1658 */ 1659 f2fs_destroy_stats(sbi); 1660 1661 /* destroy f2fs internal modules */ 1662 f2fs_destroy_node_manager(sbi); 1663 f2fs_destroy_segment_manager(sbi); 1664 1665 /* flush s_error_work before sbi destroy */ 1666 flush_work(&sbi->s_error_work); 1667 1668 f2fs_destroy_post_read_wq(sbi); 1669 1670 kvfree(sbi->ckpt); 1671 1672 sb->s_fs_info = NULL; 1673 if (sbi->s_chksum_driver) 1674 crypto_free_shash(sbi->s_chksum_driver); 1675 kfree(sbi->raw_super); 1676 1677 destroy_device_list(sbi); 1678 f2fs_destroy_page_array_cache(sbi); 1679 f2fs_destroy_xattr_caches(sbi); 1680 mempool_destroy(sbi->write_io_dummy); 1681 #ifdef CONFIG_QUOTA 1682 for (i = 0; i < MAXQUOTAS; i++) 1683 kfree(F2FS_OPTION(sbi).s_qf_names[i]); 1684 #endif 1685 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy); 1686 destroy_percpu_info(sbi); 1687 f2fs_destroy_iostat(sbi); 1688 for (i = 0; i < NR_PAGE_TYPE; i++) 1689 kvfree(sbi->write_io[i]); 1690 #if IS_ENABLED(CONFIG_UNICODE) 1691 utf8_unload(sb->s_encoding); 1692 #endif 1693 kfree(sbi); 1694 } 1695 1696 int f2fs_sync_fs(struct super_block *sb, int sync) 1697 { 1698 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1699 int err = 0; 1700 1701 if (unlikely(f2fs_cp_error(sbi))) 1702 return 0; 1703 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) 1704 return 0; 1705 1706 trace_f2fs_sync_fs(sb, sync); 1707 1708 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 1709 return -EAGAIN; 1710 1711 if (sync) { 1712 stat_inc_cp_call_count(sbi, TOTAL_CALL); 1713 err = f2fs_issue_checkpoint(sbi); 1714 } 1715 1716 return err; 1717 } 1718 1719 static int f2fs_freeze(struct super_block *sb) 1720 { 1721 if (f2fs_readonly(sb)) 1722 return 0; 1723 1724 /* IO error happened before */ 1725 if (unlikely(f2fs_cp_error(F2FS_SB(sb)))) 1726 return -EIO; 1727 1728 /* must be clean, since sync_filesystem() was already called */ 1729 if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY)) 1730 return -EINVAL; 1731 1732 /* Let's flush checkpoints and stop the thread. */ 1733 f2fs_flush_ckpt_thread(F2FS_SB(sb)); 1734 1735 /* to avoid deadlock on f2fs_evict_inode->SB_FREEZE_FS */ 1736 set_sbi_flag(F2FS_SB(sb), SBI_IS_FREEZING); 1737 return 0; 1738 } 1739 1740 static int f2fs_unfreeze(struct super_block *sb) 1741 { 1742 clear_sbi_flag(F2FS_SB(sb), SBI_IS_FREEZING); 1743 return 0; 1744 } 1745 1746 #ifdef CONFIG_QUOTA 1747 static int f2fs_statfs_project(struct super_block *sb, 1748 kprojid_t projid, struct kstatfs *buf) 1749 { 1750 struct kqid qid; 1751 struct dquot *dquot; 1752 u64 limit; 1753 u64 curblock; 1754 1755 qid = make_kqid_projid(projid); 1756 dquot = dqget(sb, qid); 1757 if (IS_ERR(dquot)) 1758 return PTR_ERR(dquot); 1759 spin_lock(&dquot->dq_dqb_lock); 1760 1761 limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit, 1762 dquot->dq_dqb.dqb_bhardlimit); 1763 if (limit) 1764 limit >>= sb->s_blocksize_bits; 1765 1766 if (limit && buf->f_blocks > limit) { 1767 curblock = (dquot->dq_dqb.dqb_curspace + 1768 dquot->dq_dqb.dqb_rsvspace) >> sb->s_blocksize_bits; 1769 buf->f_blocks = limit; 1770 buf->f_bfree = buf->f_bavail = 1771 (buf->f_blocks > curblock) ? 1772 (buf->f_blocks - curblock) : 0; 1773 } 1774 1775 limit = min_not_zero(dquot->dq_dqb.dqb_isoftlimit, 1776 dquot->dq_dqb.dqb_ihardlimit); 1777 1778 if (limit && buf->f_files > limit) { 1779 buf->f_files = limit; 1780 buf->f_ffree = 1781 (buf->f_files > dquot->dq_dqb.dqb_curinodes) ? 1782 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0; 1783 } 1784 1785 spin_unlock(&dquot->dq_dqb_lock); 1786 dqput(dquot); 1787 return 0; 1788 } 1789 #endif 1790 1791 static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf) 1792 { 1793 struct super_block *sb = dentry->d_sb; 1794 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1795 u64 id = huge_encode_dev(sb->s_bdev->bd_dev); 1796 block_t total_count, user_block_count, start_count; 1797 u64 avail_node_count; 1798 unsigned int total_valid_node_count; 1799 1800 total_count = le64_to_cpu(sbi->raw_super->block_count); 1801 start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr); 1802 buf->f_type = F2FS_SUPER_MAGIC; 1803 buf->f_bsize = sbi->blocksize; 1804 1805 buf->f_blocks = total_count - start_count; 1806 1807 spin_lock(&sbi->stat_lock); 1808 1809 user_block_count = sbi->user_block_count; 1810 total_valid_node_count = valid_node_count(sbi); 1811 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM; 1812 buf->f_bfree = user_block_count - valid_user_blocks(sbi) - 1813 sbi->current_reserved_blocks; 1814 1815 if (unlikely(buf->f_bfree <= sbi->unusable_block_count)) 1816 buf->f_bfree = 0; 1817 else 1818 buf->f_bfree -= sbi->unusable_block_count; 1819 spin_unlock(&sbi->stat_lock); 1820 1821 if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks) 1822 buf->f_bavail = buf->f_bfree - 1823 F2FS_OPTION(sbi).root_reserved_blocks; 1824 else 1825 buf->f_bavail = 0; 1826 1827 if (avail_node_count > user_block_count) { 1828 buf->f_files = user_block_count; 1829 buf->f_ffree = buf->f_bavail; 1830 } else { 1831 buf->f_files = avail_node_count; 1832 buf->f_ffree = min(avail_node_count - total_valid_node_count, 1833 buf->f_bavail); 1834 } 1835 1836 buf->f_namelen = F2FS_NAME_LEN; 1837 buf->f_fsid = u64_to_fsid(id); 1838 1839 #ifdef CONFIG_QUOTA 1840 if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) && 1841 sb_has_quota_limits_enabled(sb, PRJQUOTA)) { 1842 f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf); 1843 } 1844 #endif 1845 return 0; 1846 } 1847 1848 static inline void f2fs_show_quota_options(struct seq_file *seq, 1849 struct super_block *sb) 1850 { 1851 #ifdef CONFIG_QUOTA 1852 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1853 1854 if (F2FS_OPTION(sbi).s_jquota_fmt) { 1855 char *fmtname = ""; 1856 1857 switch (F2FS_OPTION(sbi).s_jquota_fmt) { 1858 case QFMT_VFS_OLD: 1859 fmtname = "vfsold"; 1860 break; 1861 case QFMT_VFS_V0: 1862 fmtname = "vfsv0"; 1863 break; 1864 case QFMT_VFS_V1: 1865 fmtname = "vfsv1"; 1866 break; 1867 } 1868 seq_printf(seq, ",jqfmt=%s", fmtname); 1869 } 1870 1871 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA]) 1872 seq_show_option(seq, "usrjquota", 1873 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]); 1874 1875 if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]) 1876 seq_show_option(seq, "grpjquota", 1877 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]); 1878 1879 if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) 1880 seq_show_option(seq, "prjjquota", 1881 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]); 1882 #endif 1883 } 1884 1885 #ifdef CONFIG_F2FS_FS_COMPRESSION 1886 static inline void f2fs_show_compress_options(struct seq_file *seq, 1887 struct super_block *sb) 1888 { 1889 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1890 char *algtype = ""; 1891 int i; 1892 1893 if (!f2fs_sb_has_compression(sbi)) 1894 return; 1895 1896 switch (F2FS_OPTION(sbi).compress_algorithm) { 1897 case COMPRESS_LZO: 1898 algtype = "lzo"; 1899 break; 1900 case COMPRESS_LZ4: 1901 algtype = "lz4"; 1902 break; 1903 case COMPRESS_ZSTD: 1904 algtype = "zstd"; 1905 break; 1906 case COMPRESS_LZORLE: 1907 algtype = "lzo-rle"; 1908 break; 1909 } 1910 seq_printf(seq, ",compress_algorithm=%s", algtype); 1911 1912 if (F2FS_OPTION(sbi).compress_level) 1913 seq_printf(seq, ":%d", F2FS_OPTION(sbi).compress_level); 1914 1915 seq_printf(seq, ",compress_log_size=%u", 1916 F2FS_OPTION(sbi).compress_log_size); 1917 1918 for (i = 0; i < F2FS_OPTION(sbi).compress_ext_cnt; i++) { 1919 seq_printf(seq, ",compress_extension=%s", 1920 F2FS_OPTION(sbi).extensions[i]); 1921 } 1922 1923 for (i = 0; i < F2FS_OPTION(sbi).nocompress_ext_cnt; i++) { 1924 seq_printf(seq, ",nocompress_extension=%s", 1925 F2FS_OPTION(sbi).noextensions[i]); 1926 } 1927 1928 if (F2FS_OPTION(sbi).compress_chksum) 1929 seq_puts(seq, ",compress_chksum"); 1930 1931 if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_FS) 1932 seq_printf(seq, ",compress_mode=%s", "fs"); 1933 else if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_USER) 1934 seq_printf(seq, ",compress_mode=%s", "user"); 1935 1936 if (test_opt(sbi, COMPRESS_CACHE)) 1937 seq_puts(seq, ",compress_cache"); 1938 } 1939 #endif 1940 1941 static int f2fs_show_options(struct seq_file *seq, struct dentry *root) 1942 { 1943 struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb); 1944 1945 if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_SYNC) 1946 seq_printf(seq, ",background_gc=%s", "sync"); 1947 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_ON) 1948 seq_printf(seq, ",background_gc=%s", "on"); 1949 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF) 1950 seq_printf(seq, ",background_gc=%s", "off"); 1951 1952 if (test_opt(sbi, GC_MERGE)) 1953 seq_puts(seq, ",gc_merge"); 1954 else 1955 seq_puts(seq, ",nogc_merge"); 1956 1957 if (test_opt(sbi, DISABLE_ROLL_FORWARD)) 1958 seq_puts(seq, ",disable_roll_forward"); 1959 if (test_opt(sbi, NORECOVERY)) 1960 seq_puts(seq, ",norecovery"); 1961 if (test_opt(sbi, DISCARD)) { 1962 seq_puts(seq, ",discard"); 1963 if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_BLOCK) 1964 seq_printf(seq, ",discard_unit=%s", "block"); 1965 else if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SEGMENT) 1966 seq_printf(seq, ",discard_unit=%s", "segment"); 1967 else if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SECTION) 1968 seq_printf(seq, ",discard_unit=%s", "section"); 1969 } else { 1970 seq_puts(seq, ",nodiscard"); 1971 } 1972 if (test_opt(sbi, NOHEAP)) 1973 seq_puts(seq, ",no_heap"); 1974 else 1975 seq_puts(seq, ",heap"); 1976 #ifdef CONFIG_F2FS_FS_XATTR 1977 if (test_opt(sbi, XATTR_USER)) 1978 seq_puts(seq, ",user_xattr"); 1979 else 1980 seq_puts(seq, ",nouser_xattr"); 1981 if (test_opt(sbi, INLINE_XATTR)) 1982 seq_puts(seq, ",inline_xattr"); 1983 else 1984 seq_puts(seq, ",noinline_xattr"); 1985 if (test_opt(sbi, INLINE_XATTR_SIZE)) 1986 seq_printf(seq, ",inline_xattr_size=%u", 1987 F2FS_OPTION(sbi).inline_xattr_size); 1988 #endif 1989 #ifdef CONFIG_F2FS_FS_POSIX_ACL 1990 if (test_opt(sbi, POSIX_ACL)) 1991 seq_puts(seq, ",acl"); 1992 else 1993 seq_puts(seq, ",noacl"); 1994 #endif 1995 if (test_opt(sbi, DISABLE_EXT_IDENTIFY)) 1996 seq_puts(seq, ",disable_ext_identify"); 1997 if (test_opt(sbi, INLINE_DATA)) 1998 seq_puts(seq, ",inline_data"); 1999 else 2000 seq_puts(seq, ",noinline_data"); 2001 if (test_opt(sbi, INLINE_DENTRY)) 2002 seq_puts(seq, ",inline_dentry"); 2003 else 2004 seq_puts(seq, ",noinline_dentry"); 2005 if (test_opt(sbi, FLUSH_MERGE)) 2006 seq_puts(seq, ",flush_merge"); 2007 else 2008 seq_puts(seq, ",noflush_merge"); 2009 if (test_opt(sbi, NOBARRIER)) 2010 seq_puts(seq, ",nobarrier"); 2011 else 2012 seq_puts(seq, ",barrier"); 2013 if (test_opt(sbi, FASTBOOT)) 2014 seq_puts(seq, ",fastboot"); 2015 if (test_opt(sbi, READ_EXTENT_CACHE)) 2016 seq_puts(seq, ",extent_cache"); 2017 else 2018 seq_puts(seq, ",noextent_cache"); 2019 if (test_opt(sbi, AGE_EXTENT_CACHE)) 2020 seq_puts(seq, ",age_extent_cache"); 2021 if (test_opt(sbi, DATA_FLUSH)) 2022 seq_puts(seq, ",data_flush"); 2023 2024 seq_puts(seq, ",mode="); 2025 if (F2FS_OPTION(sbi).fs_mode == FS_MODE_ADAPTIVE) 2026 seq_puts(seq, "adaptive"); 2027 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_LFS) 2028 seq_puts(seq, "lfs"); 2029 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_SEG) 2030 seq_puts(seq, "fragment:segment"); 2031 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_BLK) 2032 seq_puts(seq, "fragment:block"); 2033 seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs); 2034 if (test_opt(sbi, RESERVE_ROOT)) 2035 seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u", 2036 F2FS_OPTION(sbi).root_reserved_blocks, 2037 from_kuid_munged(&init_user_ns, 2038 F2FS_OPTION(sbi).s_resuid), 2039 from_kgid_munged(&init_user_ns, 2040 F2FS_OPTION(sbi).s_resgid)); 2041 if (F2FS_IO_SIZE_BITS(sbi)) 2042 seq_printf(seq, ",io_bits=%u", 2043 F2FS_OPTION(sbi).write_io_size_bits); 2044 #ifdef CONFIG_F2FS_FAULT_INJECTION 2045 if (test_opt(sbi, FAULT_INJECTION)) { 2046 seq_printf(seq, ",fault_injection=%u", 2047 F2FS_OPTION(sbi).fault_info.inject_rate); 2048 seq_printf(seq, ",fault_type=%u", 2049 F2FS_OPTION(sbi).fault_info.inject_type); 2050 } 2051 #endif 2052 #ifdef CONFIG_QUOTA 2053 if (test_opt(sbi, QUOTA)) 2054 seq_puts(seq, ",quota"); 2055 if (test_opt(sbi, USRQUOTA)) 2056 seq_puts(seq, ",usrquota"); 2057 if (test_opt(sbi, GRPQUOTA)) 2058 seq_puts(seq, ",grpquota"); 2059 if (test_opt(sbi, PRJQUOTA)) 2060 seq_puts(seq, ",prjquota"); 2061 #endif 2062 f2fs_show_quota_options(seq, sbi->sb); 2063 2064 fscrypt_show_test_dummy_encryption(seq, ',', sbi->sb); 2065 2066 if (sbi->sb->s_flags & SB_INLINECRYPT) 2067 seq_puts(seq, ",inlinecrypt"); 2068 2069 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT) 2070 seq_printf(seq, ",alloc_mode=%s", "default"); 2071 else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE) 2072 seq_printf(seq, ",alloc_mode=%s", "reuse"); 2073 2074 if (test_opt(sbi, DISABLE_CHECKPOINT)) 2075 seq_printf(seq, ",checkpoint=disable:%u", 2076 F2FS_OPTION(sbi).unusable_cap); 2077 if (test_opt(sbi, MERGE_CHECKPOINT)) 2078 seq_puts(seq, ",checkpoint_merge"); 2079 else 2080 seq_puts(seq, ",nocheckpoint_merge"); 2081 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX) 2082 seq_printf(seq, ",fsync_mode=%s", "posix"); 2083 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) 2084 seq_printf(seq, ",fsync_mode=%s", "strict"); 2085 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER) 2086 seq_printf(seq, ",fsync_mode=%s", "nobarrier"); 2087 2088 #ifdef CONFIG_F2FS_FS_COMPRESSION 2089 f2fs_show_compress_options(seq, sbi->sb); 2090 #endif 2091 2092 if (test_opt(sbi, ATGC)) 2093 seq_puts(seq, ",atgc"); 2094 2095 if (F2FS_OPTION(sbi).memory_mode == MEMORY_MODE_NORMAL) 2096 seq_printf(seq, ",memory=%s", "normal"); 2097 else if (F2FS_OPTION(sbi).memory_mode == MEMORY_MODE_LOW) 2098 seq_printf(seq, ",memory=%s", "low"); 2099 2100 if (F2FS_OPTION(sbi).errors == MOUNT_ERRORS_READONLY) 2101 seq_printf(seq, ",errors=%s", "remount-ro"); 2102 else if (F2FS_OPTION(sbi).errors == MOUNT_ERRORS_CONTINUE) 2103 seq_printf(seq, ",errors=%s", "continue"); 2104 else if (F2FS_OPTION(sbi).errors == MOUNT_ERRORS_PANIC) 2105 seq_printf(seq, ",errors=%s", "panic"); 2106 2107 return 0; 2108 } 2109 2110 static void default_options(struct f2fs_sb_info *sbi, bool remount) 2111 { 2112 /* init some FS parameters */ 2113 if (!remount) { 2114 set_opt(sbi, READ_EXTENT_CACHE); 2115 clear_opt(sbi, DISABLE_CHECKPOINT); 2116 2117 if (f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) 2118 set_opt(sbi, DISCARD); 2119 2120 if (f2fs_sb_has_blkzoned(sbi)) 2121 F2FS_OPTION(sbi).discard_unit = DISCARD_UNIT_SECTION; 2122 else 2123 F2FS_OPTION(sbi).discard_unit = DISCARD_UNIT_BLOCK; 2124 } 2125 2126 if (f2fs_sb_has_readonly(sbi)) 2127 F2FS_OPTION(sbi).active_logs = NR_CURSEG_RO_TYPE; 2128 else 2129 F2FS_OPTION(sbi).active_logs = NR_CURSEG_PERSIST_TYPE; 2130 2131 F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS; 2132 if (le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_main) <= 2133 SMALL_VOLUME_SEGMENTS) 2134 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE; 2135 else 2136 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT; 2137 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX; 2138 F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID); 2139 F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID); 2140 if (f2fs_sb_has_compression(sbi)) { 2141 F2FS_OPTION(sbi).compress_algorithm = COMPRESS_LZ4; 2142 F2FS_OPTION(sbi).compress_log_size = MIN_COMPRESS_LOG_SIZE; 2143 F2FS_OPTION(sbi).compress_ext_cnt = 0; 2144 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS; 2145 } 2146 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON; 2147 F2FS_OPTION(sbi).memory_mode = MEMORY_MODE_NORMAL; 2148 F2FS_OPTION(sbi).errors = MOUNT_ERRORS_CONTINUE; 2149 2150 sbi->sb->s_flags &= ~SB_INLINECRYPT; 2151 2152 set_opt(sbi, INLINE_XATTR); 2153 set_opt(sbi, INLINE_DATA); 2154 set_opt(sbi, INLINE_DENTRY); 2155 set_opt(sbi, NOHEAP); 2156 set_opt(sbi, MERGE_CHECKPOINT); 2157 F2FS_OPTION(sbi).unusable_cap = 0; 2158 sbi->sb->s_flags |= SB_LAZYTIME; 2159 if (!f2fs_is_readonly(sbi)) 2160 set_opt(sbi, FLUSH_MERGE); 2161 if (f2fs_sb_has_blkzoned(sbi)) 2162 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS; 2163 else 2164 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE; 2165 2166 #ifdef CONFIG_F2FS_FS_XATTR 2167 set_opt(sbi, XATTR_USER); 2168 #endif 2169 #ifdef CONFIG_F2FS_FS_POSIX_ACL 2170 set_opt(sbi, POSIX_ACL); 2171 #endif 2172 2173 f2fs_build_fault_attr(sbi, 0, 0); 2174 } 2175 2176 #ifdef CONFIG_QUOTA 2177 static int f2fs_enable_quotas(struct super_block *sb); 2178 #endif 2179 2180 static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi) 2181 { 2182 unsigned int s_flags = sbi->sb->s_flags; 2183 struct cp_control cpc; 2184 unsigned int gc_mode = sbi->gc_mode; 2185 int err = 0; 2186 int ret; 2187 block_t unusable; 2188 2189 if (s_flags & SB_RDONLY) { 2190 f2fs_err(sbi, "checkpoint=disable on readonly fs"); 2191 return -EINVAL; 2192 } 2193 sbi->sb->s_flags |= SB_ACTIVE; 2194 2195 /* check if we need more GC first */ 2196 unusable = f2fs_get_unusable_blocks(sbi); 2197 if (!f2fs_disable_cp_again(sbi, unusable)) 2198 goto skip_gc; 2199 2200 f2fs_update_time(sbi, DISABLE_TIME); 2201 2202 sbi->gc_mode = GC_URGENT_HIGH; 2203 2204 while (!f2fs_time_over(sbi, DISABLE_TIME)) { 2205 struct f2fs_gc_control gc_control = { 2206 .victim_segno = NULL_SEGNO, 2207 .init_gc_type = FG_GC, 2208 .should_migrate_blocks = false, 2209 .err_gc_skipped = true, 2210 .nr_free_secs = 1 }; 2211 2212 f2fs_down_write(&sbi->gc_lock); 2213 stat_inc_gc_call_count(sbi, FOREGROUND); 2214 err = f2fs_gc(sbi, &gc_control); 2215 if (err == -ENODATA) { 2216 err = 0; 2217 break; 2218 } 2219 if (err && err != -EAGAIN) 2220 break; 2221 } 2222 2223 ret = sync_filesystem(sbi->sb); 2224 if (ret || err) { 2225 err = ret ? ret : err; 2226 goto restore_flag; 2227 } 2228 2229 unusable = f2fs_get_unusable_blocks(sbi); 2230 if (f2fs_disable_cp_again(sbi, unusable)) { 2231 err = -EAGAIN; 2232 goto restore_flag; 2233 } 2234 2235 skip_gc: 2236 f2fs_down_write(&sbi->gc_lock); 2237 cpc.reason = CP_PAUSE; 2238 set_sbi_flag(sbi, SBI_CP_DISABLED); 2239 stat_inc_cp_call_count(sbi, TOTAL_CALL); 2240 err = f2fs_write_checkpoint(sbi, &cpc); 2241 if (err) 2242 goto out_unlock; 2243 2244 spin_lock(&sbi->stat_lock); 2245 sbi->unusable_block_count = unusable; 2246 spin_unlock(&sbi->stat_lock); 2247 2248 out_unlock: 2249 f2fs_up_write(&sbi->gc_lock); 2250 restore_flag: 2251 sbi->gc_mode = gc_mode; 2252 sbi->sb->s_flags = s_flags; /* Restore SB_RDONLY status */ 2253 return err; 2254 } 2255 2256 static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi) 2257 { 2258 int retry = DEFAULT_RETRY_IO_COUNT; 2259 2260 /* we should flush all the data to keep data consistency */ 2261 do { 2262 sync_inodes_sb(sbi->sb); 2263 f2fs_io_schedule_timeout(DEFAULT_IO_TIMEOUT); 2264 } while (get_pages(sbi, F2FS_DIRTY_DATA) && retry--); 2265 2266 if (unlikely(retry < 0)) 2267 f2fs_warn(sbi, "checkpoint=enable has some unwritten data."); 2268 2269 f2fs_down_write(&sbi->gc_lock); 2270 f2fs_dirty_to_prefree(sbi); 2271 2272 clear_sbi_flag(sbi, SBI_CP_DISABLED); 2273 set_sbi_flag(sbi, SBI_IS_DIRTY); 2274 f2fs_up_write(&sbi->gc_lock); 2275 2276 f2fs_sync_fs(sbi->sb, 1); 2277 2278 /* Let's ensure there's no pending checkpoint anymore */ 2279 f2fs_flush_ckpt_thread(sbi); 2280 } 2281 2282 static int f2fs_remount(struct super_block *sb, int *flags, char *data) 2283 { 2284 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2285 struct f2fs_mount_info org_mount_opt; 2286 unsigned long old_sb_flags; 2287 int err; 2288 bool need_restart_gc = false, need_stop_gc = false; 2289 bool need_restart_ckpt = false, need_stop_ckpt = false; 2290 bool need_restart_flush = false, need_stop_flush = false; 2291 bool need_restart_discard = false, need_stop_discard = false; 2292 bool no_read_extent_cache = !test_opt(sbi, READ_EXTENT_CACHE); 2293 bool no_age_extent_cache = !test_opt(sbi, AGE_EXTENT_CACHE); 2294 bool enable_checkpoint = !test_opt(sbi, DISABLE_CHECKPOINT); 2295 bool no_io_align = !F2FS_IO_ALIGNED(sbi); 2296 bool no_atgc = !test_opt(sbi, ATGC); 2297 bool no_discard = !test_opt(sbi, DISCARD); 2298 bool no_compress_cache = !test_opt(sbi, COMPRESS_CACHE); 2299 bool block_unit_discard = f2fs_block_unit_discard(sbi); 2300 #ifdef CONFIG_QUOTA 2301 int i, j; 2302 #endif 2303 2304 /* 2305 * Save the old mount options in case we 2306 * need to restore them. 2307 */ 2308 org_mount_opt = sbi->mount_opt; 2309 old_sb_flags = sb->s_flags; 2310 2311 #ifdef CONFIG_QUOTA 2312 org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt; 2313 for (i = 0; i < MAXQUOTAS; i++) { 2314 if (F2FS_OPTION(sbi).s_qf_names[i]) { 2315 org_mount_opt.s_qf_names[i] = 2316 kstrdup(F2FS_OPTION(sbi).s_qf_names[i], 2317 GFP_KERNEL); 2318 if (!org_mount_opt.s_qf_names[i]) { 2319 for (j = 0; j < i; j++) 2320 kfree(org_mount_opt.s_qf_names[j]); 2321 return -ENOMEM; 2322 } 2323 } else { 2324 org_mount_opt.s_qf_names[i] = NULL; 2325 } 2326 } 2327 #endif 2328 2329 /* recover superblocks we couldn't write due to previous RO mount */ 2330 if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) { 2331 err = f2fs_commit_super(sbi, false); 2332 f2fs_info(sbi, "Try to recover all the superblocks, ret: %d", 2333 err); 2334 if (!err) 2335 clear_sbi_flag(sbi, SBI_NEED_SB_WRITE); 2336 } 2337 2338 default_options(sbi, true); 2339 2340 /* parse mount options */ 2341 err = parse_options(sb, data, true); 2342 if (err) 2343 goto restore_opts; 2344 2345 /* flush outstanding errors before changing fs state */ 2346 flush_work(&sbi->s_error_work); 2347 2348 /* 2349 * Previous and new state of filesystem is RO, 2350 * so skip checking GC and FLUSH_MERGE conditions. 2351 */ 2352 if (f2fs_readonly(sb) && (*flags & SB_RDONLY)) 2353 goto skip; 2354 2355 if (f2fs_dev_is_readonly(sbi) && !(*flags & SB_RDONLY)) { 2356 err = -EROFS; 2357 goto restore_opts; 2358 } 2359 2360 #ifdef CONFIG_QUOTA 2361 if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) { 2362 err = dquot_suspend(sb, -1); 2363 if (err < 0) 2364 goto restore_opts; 2365 } else if (f2fs_readonly(sb) && !(*flags & SB_RDONLY)) { 2366 /* dquot_resume needs RW */ 2367 sb->s_flags &= ~SB_RDONLY; 2368 if (sb_any_quota_suspended(sb)) { 2369 dquot_resume(sb, -1); 2370 } else if (f2fs_sb_has_quota_ino(sbi)) { 2371 err = f2fs_enable_quotas(sb); 2372 if (err) 2373 goto restore_opts; 2374 } 2375 } 2376 #endif 2377 if (f2fs_lfs_mode(sbi) && !IS_F2FS_IPU_DISABLE(sbi)) { 2378 err = -EINVAL; 2379 f2fs_warn(sbi, "LFS is not compatible with IPU"); 2380 goto restore_opts; 2381 } 2382 2383 /* disallow enable atgc dynamically */ 2384 if (no_atgc == !!test_opt(sbi, ATGC)) { 2385 err = -EINVAL; 2386 f2fs_warn(sbi, "switch atgc option is not allowed"); 2387 goto restore_opts; 2388 } 2389 2390 /* disallow enable/disable extent_cache dynamically */ 2391 if (no_read_extent_cache == !!test_opt(sbi, READ_EXTENT_CACHE)) { 2392 err = -EINVAL; 2393 f2fs_warn(sbi, "switch extent_cache option is not allowed"); 2394 goto restore_opts; 2395 } 2396 /* disallow enable/disable age extent_cache dynamically */ 2397 if (no_age_extent_cache == !!test_opt(sbi, AGE_EXTENT_CACHE)) { 2398 err = -EINVAL; 2399 f2fs_warn(sbi, "switch age_extent_cache option is not allowed"); 2400 goto restore_opts; 2401 } 2402 2403 if (no_io_align == !!F2FS_IO_ALIGNED(sbi)) { 2404 err = -EINVAL; 2405 f2fs_warn(sbi, "switch io_bits option is not allowed"); 2406 goto restore_opts; 2407 } 2408 2409 if (no_compress_cache == !!test_opt(sbi, COMPRESS_CACHE)) { 2410 err = -EINVAL; 2411 f2fs_warn(sbi, "switch compress_cache option is not allowed"); 2412 goto restore_opts; 2413 } 2414 2415 if (block_unit_discard != f2fs_block_unit_discard(sbi)) { 2416 err = -EINVAL; 2417 f2fs_warn(sbi, "switch discard_unit option is not allowed"); 2418 goto restore_opts; 2419 } 2420 2421 if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) { 2422 err = -EINVAL; 2423 f2fs_warn(sbi, "disabling checkpoint not compatible with read-only"); 2424 goto restore_opts; 2425 } 2426 2427 /* 2428 * We stop the GC thread if FS is mounted as RO 2429 * or if background_gc = off is passed in mount 2430 * option. Also sync the filesystem. 2431 */ 2432 if ((*flags & SB_RDONLY) || 2433 (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF && 2434 !test_opt(sbi, GC_MERGE))) { 2435 if (sbi->gc_thread) { 2436 f2fs_stop_gc_thread(sbi); 2437 need_restart_gc = true; 2438 } 2439 } else if (!sbi->gc_thread) { 2440 err = f2fs_start_gc_thread(sbi); 2441 if (err) 2442 goto restore_opts; 2443 need_stop_gc = true; 2444 } 2445 2446 if (*flags & SB_RDONLY) { 2447 sync_inodes_sb(sb); 2448 2449 set_sbi_flag(sbi, SBI_IS_DIRTY); 2450 set_sbi_flag(sbi, SBI_IS_CLOSE); 2451 f2fs_sync_fs(sb, 1); 2452 clear_sbi_flag(sbi, SBI_IS_CLOSE); 2453 } 2454 2455 if ((*flags & SB_RDONLY) || test_opt(sbi, DISABLE_CHECKPOINT) || 2456 !test_opt(sbi, MERGE_CHECKPOINT)) { 2457 f2fs_stop_ckpt_thread(sbi); 2458 need_restart_ckpt = true; 2459 } else { 2460 /* Flush if the prevous checkpoint, if exists. */ 2461 f2fs_flush_ckpt_thread(sbi); 2462 2463 err = f2fs_start_ckpt_thread(sbi); 2464 if (err) { 2465 f2fs_err(sbi, 2466 "Failed to start F2FS issue_checkpoint_thread (%d)", 2467 err); 2468 goto restore_gc; 2469 } 2470 need_stop_ckpt = true; 2471 } 2472 2473 /* 2474 * We stop issue flush thread if FS is mounted as RO 2475 * or if flush_merge is not passed in mount option. 2476 */ 2477 if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) { 2478 clear_opt(sbi, FLUSH_MERGE); 2479 f2fs_destroy_flush_cmd_control(sbi, false); 2480 need_restart_flush = true; 2481 } else { 2482 err = f2fs_create_flush_cmd_control(sbi); 2483 if (err) 2484 goto restore_ckpt; 2485 need_stop_flush = true; 2486 } 2487 2488 if (no_discard == !!test_opt(sbi, DISCARD)) { 2489 if (test_opt(sbi, DISCARD)) { 2490 err = f2fs_start_discard_thread(sbi); 2491 if (err) 2492 goto restore_flush; 2493 need_stop_discard = true; 2494 } else { 2495 f2fs_stop_discard_thread(sbi); 2496 f2fs_issue_discard_timeout(sbi); 2497 need_restart_discard = true; 2498 } 2499 } 2500 2501 if (enable_checkpoint == !!test_opt(sbi, DISABLE_CHECKPOINT)) { 2502 if (test_opt(sbi, DISABLE_CHECKPOINT)) { 2503 err = f2fs_disable_checkpoint(sbi); 2504 if (err) 2505 goto restore_discard; 2506 } else { 2507 f2fs_enable_checkpoint(sbi); 2508 } 2509 } 2510 2511 skip: 2512 #ifdef CONFIG_QUOTA 2513 /* Release old quota file names */ 2514 for (i = 0; i < MAXQUOTAS; i++) 2515 kfree(org_mount_opt.s_qf_names[i]); 2516 #endif 2517 /* Update the POSIXACL Flag */ 2518 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) | 2519 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0); 2520 2521 limit_reserve_root(sbi); 2522 adjust_unusable_cap_perc(sbi); 2523 *flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME); 2524 return 0; 2525 restore_discard: 2526 if (need_restart_discard) { 2527 if (f2fs_start_discard_thread(sbi)) 2528 f2fs_warn(sbi, "discard has been stopped"); 2529 } else if (need_stop_discard) { 2530 f2fs_stop_discard_thread(sbi); 2531 } 2532 restore_flush: 2533 if (need_restart_flush) { 2534 if (f2fs_create_flush_cmd_control(sbi)) 2535 f2fs_warn(sbi, "background flush thread has stopped"); 2536 } else if (need_stop_flush) { 2537 clear_opt(sbi, FLUSH_MERGE); 2538 f2fs_destroy_flush_cmd_control(sbi, false); 2539 } 2540 restore_ckpt: 2541 if (need_restart_ckpt) { 2542 if (f2fs_start_ckpt_thread(sbi)) 2543 f2fs_warn(sbi, "background ckpt thread has stopped"); 2544 } else if (need_stop_ckpt) { 2545 f2fs_stop_ckpt_thread(sbi); 2546 } 2547 restore_gc: 2548 if (need_restart_gc) { 2549 if (f2fs_start_gc_thread(sbi)) 2550 f2fs_warn(sbi, "background gc thread has stopped"); 2551 } else if (need_stop_gc) { 2552 f2fs_stop_gc_thread(sbi); 2553 } 2554 restore_opts: 2555 #ifdef CONFIG_QUOTA 2556 F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt; 2557 for (i = 0; i < MAXQUOTAS; i++) { 2558 kfree(F2FS_OPTION(sbi).s_qf_names[i]); 2559 F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i]; 2560 } 2561 #endif 2562 sbi->mount_opt = org_mount_opt; 2563 sb->s_flags = old_sb_flags; 2564 return err; 2565 } 2566 2567 #ifdef CONFIG_QUOTA 2568 static bool f2fs_need_recovery(struct f2fs_sb_info *sbi) 2569 { 2570 /* need to recovery orphan */ 2571 if (is_set_ckpt_flags(sbi, CP_ORPHAN_PRESENT_FLAG)) 2572 return true; 2573 /* need to recovery data */ 2574 if (test_opt(sbi, DISABLE_ROLL_FORWARD)) 2575 return false; 2576 if (test_opt(sbi, NORECOVERY)) 2577 return false; 2578 return !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG); 2579 } 2580 2581 static bool f2fs_recover_quota_begin(struct f2fs_sb_info *sbi) 2582 { 2583 bool readonly = f2fs_readonly(sbi->sb); 2584 2585 if (!f2fs_need_recovery(sbi)) 2586 return false; 2587 2588 /* it doesn't need to check f2fs_sb_has_readonly() */ 2589 if (f2fs_hw_is_readonly(sbi)) 2590 return false; 2591 2592 if (readonly) { 2593 sbi->sb->s_flags &= ~SB_RDONLY; 2594 set_sbi_flag(sbi, SBI_IS_WRITABLE); 2595 } 2596 2597 /* 2598 * Turn on quotas which were not enabled for read-only mounts if 2599 * filesystem has quota feature, so that they are updated correctly. 2600 */ 2601 return f2fs_enable_quota_files(sbi, readonly); 2602 } 2603 2604 static void f2fs_recover_quota_end(struct f2fs_sb_info *sbi, 2605 bool quota_enabled) 2606 { 2607 if (quota_enabled) 2608 f2fs_quota_off_umount(sbi->sb); 2609 2610 if (is_sbi_flag_set(sbi, SBI_IS_WRITABLE)) { 2611 clear_sbi_flag(sbi, SBI_IS_WRITABLE); 2612 sbi->sb->s_flags |= SB_RDONLY; 2613 } 2614 } 2615 2616 /* Read data from quotafile */ 2617 static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data, 2618 size_t len, loff_t off) 2619 { 2620 struct inode *inode = sb_dqopt(sb)->files[type]; 2621 struct address_space *mapping = inode->i_mapping; 2622 block_t blkidx = F2FS_BYTES_TO_BLK(off); 2623 int offset = off & (sb->s_blocksize - 1); 2624 int tocopy; 2625 size_t toread; 2626 loff_t i_size = i_size_read(inode); 2627 struct page *page; 2628 2629 if (off > i_size) 2630 return 0; 2631 2632 if (off + len > i_size) 2633 len = i_size - off; 2634 toread = len; 2635 while (toread > 0) { 2636 tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread); 2637 repeat: 2638 page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS); 2639 if (IS_ERR(page)) { 2640 if (PTR_ERR(page) == -ENOMEM) { 2641 memalloc_retry_wait(GFP_NOFS); 2642 goto repeat; 2643 } 2644 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2645 return PTR_ERR(page); 2646 } 2647 2648 lock_page(page); 2649 2650 if (unlikely(page->mapping != mapping)) { 2651 f2fs_put_page(page, 1); 2652 goto repeat; 2653 } 2654 if (unlikely(!PageUptodate(page))) { 2655 f2fs_put_page(page, 1); 2656 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2657 return -EIO; 2658 } 2659 2660 memcpy_from_page(data, page, offset, tocopy); 2661 f2fs_put_page(page, 1); 2662 2663 offset = 0; 2664 toread -= tocopy; 2665 data += tocopy; 2666 blkidx++; 2667 } 2668 return len; 2669 } 2670 2671 /* Write to quotafile */ 2672 static ssize_t f2fs_quota_write(struct super_block *sb, int type, 2673 const char *data, size_t len, loff_t off) 2674 { 2675 struct inode *inode = sb_dqopt(sb)->files[type]; 2676 struct address_space *mapping = inode->i_mapping; 2677 const struct address_space_operations *a_ops = mapping->a_ops; 2678 int offset = off & (sb->s_blocksize - 1); 2679 size_t towrite = len; 2680 struct page *page; 2681 void *fsdata = NULL; 2682 int err = 0; 2683 int tocopy; 2684 2685 while (towrite > 0) { 2686 tocopy = min_t(unsigned long, sb->s_blocksize - offset, 2687 towrite); 2688 retry: 2689 err = a_ops->write_begin(NULL, mapping, off, tocopy, 2690 &page, &fsdata); 2691 if (unlikely(err)) { 2692 if (err == -ENOMEM) { 2693 f2fs_io_schedule_timeout(DEFAULT_IO_TIMEOUT); 2694 goto retry; 2695 } 2696 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2697 break; 2698 } 2699 2700 memcpy_to_page(page, offset, data, tocopy); 2701 2702 a_ops->write_end(NULL, mapping, off, tocopy, tocopy, 2703 page, fsdata); 2704 offset = 0; 2705 towrite -= tocopy; 2706 off += tocopy; 2707 data += tocopy; 2708 cond_resched(); 2709 } 2710 2711 if (len == towrite) 2712 return err; 2713 inode->i_mtime = inode_set_ctime_current(inode); 2714 f2fs_mark_inode_dirty_sync(inode, false); 2715 return len - towrite; 2716 } 2717 2718 int f2fs_dquot_initialize(struct inode *inode) 2719 { 2720 if (time_to_inject(F2FS_I_SB(inode), FAULT_DQUOT_INIT)) 2721 return -ESRCH; 2722 2723 return dquot_initialize(inode); 2724 } 2725 2726 static struct dquot **f2fs_get_dquots(struct inode *inode) 2727 { 2728 return F2FS_I(inode)->i_dquot; 2729 } 2730 2731 static qsize_t *f2fs_get_reserved_space(struct inode *inode) 2732 { 2733 return &F2FS_I(inode)->i_reserved_quota; 2734 } 2735 2736 static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type) 2737 { 2738 if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) { 2739 f2fs_err(sbi, "quota sysfile may be corrupted, skip loading it"); 2740 return 0; 2741 } 2742 2743 return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type], 2744 F2FS_OPTION(sbi).s_jquota_fmt, type); 2745 } 2746 2747 int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly) 2748 { 2749 int enabled = 0; 2750 int i, err; 2751 2752 if (f2fs_sb_has_quota_ino(sbi) && rdonly) { 2753 err = f2fs_enable_quotas(sbi->sb); 2754 if (err) { 2755 f2fs_err(sbi, "Cannot turn on quota_ino: %d", err); 2756 return 0; 2757 } 2758 return 1; 2759 } 2760 2761 for (i = 0; i < MAXQUOTAS; i++) { 2762 if (F2FS_OPTION(sbi).s_qf_names[i]) { 2763 err = f2fs_quota_on_mount(sbi, i); 2764 if (!err) { 2765 enabled = 1; 2766 continue; 2767 } 2768 f2fs_err(sbi, "Cannot turn on quotas: %d on %d", 2769 err, i); 2770 } 2771 } 2772 return enabled; 2773 } 2774 2775 static int f2fs_quota_enable(struct super_block *sb, int type, int format_id, 2776 unsigned int flags) 2777 { 2778 struct inode *qf_inode; 2779 unsigned long qf_inum; 2780 unsigned long qf_flag = F2FS_QUOTA_DEFAULT_FL; 2781 int err; 2782 2783 BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb))); 2784 2785 qf_inum = f2fs_qf_ino(sb, type); 2786 if (!qf_inum) 2787 return -EPERM; 2788 2789 qf_inode = f2fs_iget(sb, qf_inum); 2790 if (IS_ERR(qf_inode)) { 2791 f2fs_err(F2FS_SB(sb), "Bad quota inode %u:%lu", type, qf_inum); 2792 return PTR_ERR(qf_inode); 2793 } 2794 2795 /* Don't account quota for quota files to avoid recursion */ 2796 inode_lock(qf_inode); 2797 qf_inode->i_flags |= S_NOQUOTA; 2798 2799 if ((F2FS_I(qf_inode)->i_flags & qf_flag) != qf_flag) { 2800 F2FS_I(qf_inode)->i_flags |= qf_flag; 2801 f2fs_set_inode_flags(qf_inode); 2802 } 2803 inode_unlock(qf_inode); 2804 2805 err = dquot_load_quota_inode(qf_inode, type, format_id, flags); 2806 iput(qf_inode); 2807 return err; 2808 } 2809 2810 static int f2fs_enable_quotas(struct super_block *sb) 2811 { 2812 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2813 int type, err = 0; 2814 unsigned long qf_inum; 2815 bool quota_mopt[MAXQUOTAS] = { 2816 test_opt(sbi, USRQUOTA), 2817 test_opt(sbi, GRPQUOTA), 2818 test_opt(sbi, PRJQUOTA), 2819 }; 2820 2821 if (is_set_ckpt_flags(F2FS_SB(sb), CP_QUOTA_NEED_FSCK_FLAG)) { 2822 f2fs_err(sbi, "quota file may be corrupted, skip loading it"); 2823 return 0; 2824 } 2825 2826 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE; 2827 2828 for (type = 0; type < MAXQUOTAS; type++) { 2829 qf_inum = f2fs_qf_ino(sb, type); 2830 if (qf_inum) { 2831 err = f2fs_quota_enable(sb, type, QFMT_VFS_V1, 2832 DQUOT_USAGE_ENABLED | 2833 (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0)); 2834 if (err) { 2835 f2fs_err(sbi, "Failed to enable quota tracking (type=%d, err=%d). Please run fsck to fix.", 2836 type, err); 2837 for (type--; type >= 0; type--) 2838 dquot_quota_off(sb, type); 2839 set_sbi_flag(F2FS_SB(sb), 2840 SBI_QUOTA_NEED_REPAIR); 2841 return err; 2842 } 2843 } 2844 } 2845 return 0; 2846 } 2847 2848 static int f2fs_quota_sync_file(struct f2fs_sb_info *sbi, int type) 2849 { 2850 struct quota_info *dqopt = sb_dqopt(sbi->sb); 2851 struct address_space *mapping = dqopt->files[type]->i_mapping; 2852 int ret = 0; 2853 2854 ret = dquot_writeback_dquots(sbi->sb, type); 2855 if (ret) 2856 goto out; 2857 2858 ret = filemap_fdatawrite(mapping); 2859 if (ret) 2860 goto out; 2861 2862 /* if we are using journalled quota */ 2863 if (is_journalled_quota(sbi)) 2864 goto out; 2865 2866 ret = filemap_fdatawait(mapping); 2867 2868 truncate_inode_pages(&dqopt->files[type]->i_data, 0); 2869 out: 2870 if (ret) 2871 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2872 return ret; 2873 } 2874 2875 int f2fs_quota_sync(struct super_block *sb, int type) 2876 { 2877 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2878 struct quota_info *dqopt = sb_dqopt(sb); 2879 int cnt; 2880 int ret = 0; 2881 2882 /* 2883 * Now when everything is written we can discard the pagecache so 2884 * that userspace sees the changes. 2885 */ 2886 for (cnt = 0; cnt < MAXQUOTAS; cnt++) { 2887 2888 if (type != -1 && cnt != type) 2889 continue; 2890 2891 if (!sb_has_quota_active(sb, cnt)) 2892 continue; 2893 2894 if (!f2fs_sb_has_quota_ino(sbi)) 2895 inode_lock(dqopt->files[cnt]); 2896 2897 /* 2898 * do_quotactl 2899 * f2fs_quota_sync 2900 * f2fs_down_read(quota_sem) 2901 * dquot_writeback_dquots() 2902 * f2fs_dquot_commit 2903 * block_operation 2904 * f2fs_down_read(quota_sem) 2905 */ 2906 f2fs_lock_op(sbi); 2907 f2fs_down_read(&sbi->quota_sem); 2908 2909 ret = f2fs_quota_sync_file(sbi, cnt); 2910 2911 f2fs_up_read(&sbi->quota_sem); 2912 f2fs_unlock_op(sbi); 2913 2914 if (!f2fs_sb_has_quota_ino(sbi)) 2915 inode_unlock(dqopt->files[cnt]); 2916 2917 if (ret) 2918 break; 2919 } 2920 return ret; 2921 } 2922 2923 static int f2fs_quota_on(struct super_block *sb, int type, int format_id, 2924 const struct path *path) 2925 { 2926 struct inode *inode; 2927 int err; 2928 2929 /* if quota sysfile exists, deny enabling quota with specific file */ 2930 if (f2fs_sb_has_quota_ino(F2FS_SB(sb))) { 2931 f2fs_err(F2FS_SB(sb), "quota sysfile already exists"); 2932 return -EBUSY; 2933 } 2934 2935 if (path->dentry->d_sb != sb) 2936 return -EXDEV; 2937 2938 err = f2fs_quota_sync(sb, type); 2939 if (err) 2940 return err; 2941 2942 inode = d_inode(path->dentry); 2943 2944 err = filemap_fdatawrite(inode->i_mapping); 2945 if (err) 2946 return err; 2947 2948 err = filemap_fdatawait(inode->i_mapping); 2949 if (err) 2950 return err; 2951 2952 err = dquot_quota_on(sb, type, format_id, path); 2953 if (err) 2954 return err; 2955 2956 inode_lock(inode); 2957 F2FS_I(inode)->i_flags |= F2FS_QUOTA_DEFAULT_FL; 2958 f2fs_set_inode_flags(inode); 2959 inode_unlock(inode); 2960 f2fs_mark_inode_dirty_sync(inode, false); 2961 2962 return 0; 2963 } 2964 2965 static int __f2fs_quota_off(struct super_block *sb, int type) 2966 { 2967 struct inode *inode = sb_dqopt(sb)->files[type]; 2968 int err; 2969 2970 if (!inode || !igrab(inode)) 2971 return dquot_quota_off(sb, type); 2972 2973 err = f2fs_quota_sync(sb, type); 2974 if (err) 2975 goto out_put; 2976 2977 err = dquot_quota_off(sb, type); 2978 if (err || f2fs_sb_has_quota_ino(F2FS_SB(sb))) 2979 goto out_put; 2980 2981 inode_lock(inode); 2982 F2FS_I(inode)->i_flags &= ~F2FS_QUOTA_DEFAULT_FL; 2983 f2fs_set_inode_flags(inode); 2984 inode_unlock(inode); 2985 f2fs_mark_inode_dirty_sync(inode, false); 2986 out_put: 2987 iput(inode); 2988 return err; 2989 } 2990 2991 static int f2fs_quota_off(struct super_block *sb, int type) 2992 { 2993 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2994 int err; 2995 2996 err = __f2fs_quota_off(sb, type); 2997 2998 /* 2999 * quotactl can shutdown journalled quota, result in inconsistence 3000 * between quota record and fs data by following updates, tag the 3001 * flag to let fsck be aware of it. 3002 */ 3003 if (is_journalled_quota(sbi)) 3004 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 3005 return err; 3006 } 3007 3008 void f2fs_quota_off_umount(struct super_block *sb) 3009 { 3010 int type; 3011 int err; 3012 3013 for (type = 0; type < MAXQUOTAS; type++) { 3014 err = __f2fs_quota_off(sb, type); 3015 if (err) { 3016 int ret = dquot_quota_off(sb, type); 3017 3018 f2fs_err(F2FS_SB(sb), "Fail to turn off disk quota (type: %d, err: %d, ret:%d), Please run fsck to fix it.", 3019 type, err, ret); 3020 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 3021 } 3022 } 3023 /* 3024 * In case of checkpoint=disable, we must flush quota blocks. 3025 * This can cause NULL exception for node_inode in end_io, since 3026 * put_super already dropped it. 3027 */ 3028 sync_filesystem(sb); 3029 } 3030 3031 static void f2fs_truncate_quota_inode_pages(struct super_block *sb) 3032 { 3033 struct quota_info *dqopt = sb_dqopt(sb); 3034 int type; 3035 3036 for (type = 0; type < MAXQUOTAS; type++) { 3037 if (!dqopt->files[type]) 3038 continue; 3039 f2fs_inode_synced(dqopt->files[type]); 3040 } 3041 } 3042 3043 static int f2fs_dquot_commit(struct dquot *dquot) 3044 { 3045 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb); 3046 int ret; 3047 3048 f2fs_down_read_nested(&sbi->quota_sem, SINGLE_DEPTH_NESTING); 3049 ret = dquot_commit(dquot); 3050 if (ret < 0) 3051 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 3052 f2fs_up_read(&sbi->quota_sem); 3053 return ret; 3054 } 3055 3056 static int f2fs_dquot_acquire(struct dquot *dquot) 3057 { 3058 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb); 3059 int ret; 3060 3061 f2fs_down_read(&sbi->quota_sem); 3062 ret = dquot_acquire(dquot); 3063 if (ret < 0) 3064 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 3065 f2fs_up_read(&sbi->quota_sem); 3066 return ret; 3067 } 3068 3069 static int f2fs_dquot_release(struct dquot *dquot) 3070 { 3071 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb); 3072 int ret = dquot_release(dquot); 3073 3074 if (ret < 0) 3075 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 3076 return ret; 3077 } 3078 3079 static int f2fs_dquot_mark_dquot_dirty(struct dquot *dquot) 3080 { 3081 struct super_block *sb = dquot->dq_sb; 3082 struct f2fs_sb_info *sbi = F2FS_SB(sb); 3083 int ret = dquot_mark_dquot_dirty(dquot); 3084 3085 /* if we are using journalled quota */ 3086 if (is_journalled_quota(sbi)) 3087 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH); 3088 3089 return ret; 3090 } 3091 3092 static int f2fs_dquot_commit_info(struct super_block *sb, int type) 3093 { 3094 struct f2fs_sb_info *sbi = F2FS_SB(sb); 3095 int ret = dquot_commit_info(sb, type); 3096 3097 if (ret < 0) 3098 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 3099 return ret; 3100 } 3101 3102 static int f2fs_get_projid(struct inode *inode, kprojid_t *projid) 3103 { 3104 *projid = F2FS_I(inode)->i_projid; 3105 return 0; 3106 } 3107 3108 static const struct dquot_operations f2fs_quota_operations = { 3109 .get_reserved_space = f2fs_get_reserved_space, 3110 .write_dquot = f2fs_dquot_commit, 3111 .acquire_dquot = f2fs_dquot_acquire, 3112 .release_dquot = f2fs_dquot_release, 3113 .mark_dirty = f2fs_dquot_mark_dquot_dirty, 3114 .write_info = f2fs_dquot_commit_info, 3115 .alloc_dquot = dquot_alloc, 3116 .destroy_dquot = dquot_destroy, 3117 .get_projid = f2fs_get_projid, 3118 .get_next_id = dquot_get_next_id, 3119 }; 3120 3121 static const struct quotactl_ops f2fs_quotactl_ops = { 3122 .quota_on = f2fs_quota_on, 3123 .quota_off = f2fs_quota_off, 3124 .quota_sync = f2fs_quota_sync, 3125 .get_state = dquot_get_state, 3126 .set_info = dquot_set_dqinfo, 3127 .get_dqblk = dquot_get_dqblk, 3128 .set_dqblk = dquot_set_dqblk, 3129 .get_nextdqblk = dquot_get_next_dqblk, 3130 }; 3131 #else 3132 int f2fs_dquot_initialize(struct inode *inode) 3133 { 3134 return 0; 3135 } 3136 3137 int f2fs_quota_sync(struct super_block *sb, int type) 3138 { 3139 return 0; 3140 } 3141 3142 void f2fs_quota_off_umount(struct super_block *sb) 3143 { 3144 } 3145 #endif 3146 3147 static const struct super_operations f2fs_sops = { 3148 .alloc_inode = f2fs_alloc_inode, 3149 .free_inode = f2fs_free_inode, 3150 .drop_inode = f2fs_drop_inode, 3151 .write_inode = f2fs_write_inode, 3152 .dirty_inode = f2fs_dirty_inode, 3153 .show_options = f2fs_show_options, 3154 #ifdef CONFIG_QUOTA 3155 .quota_read = f2fs_quota_read, 3156 .quota_write = f2fs_quota_write, 3157 .get_dquots = f2fs_get_dquots, 3158 #endif 3159 .evict_inode = f2fs_evict_inode, 3160 .put_super = f2fs_put_super, 3161 .sync_fs = f2fs_sync_fs, 3162 .freeze_fs = f2fs_freeze, 3163 .unfreeze_fs = f2fs_unfreeze, 3164 .statfs = f2fs_statfs, 3165 .remount_fs = f2fs_remount, 3166 }; 3167 3168 #ifdef CONFIG_FS_ENCRYPTION 3169 static int f2fs_get_context(struct inode *inode, void *ctx, size_t len) 3170 { 3171 return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION, 3172 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, 3173 ctx, len, NULL); 3174 } 3175 3176 static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len, 3177 void *fs_data) 3178 { 3179 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 3180 3181 /* 3182 * Encrypting the root directory is not allowed because fsck 3183 * expects lost+found directory to exist and remain unencrypted 3184 * if LOST_FOUND feature is enabled. 3185 * 3186 */ 3187 if (f2fs_sb_has_lost_found(sbi) && 3188 inode->i_ino == F2FS_ROOT_INO(sbi)) 3189 return -EPERM; 3190 3191 return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION, 3192 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, 3193 ctx, len, fs_data, XATTR_CREATE); 3194 } 3195 3196 static const union fscrypt_policy *f2fs_get_dummy_policy(struct super_block *sb) 3197 { 3198 return F2FS_OPTION(F2FS_SB(sb)).dummy_enc_policy.policy; 3199 } 3200 3201 static bool f2fs_has_stable_inodes(struct super_block *sb) 3202 { 3203 return true; 3204 } 3205 3206 static void f2fs_get_ino_and_lblk_bits(struct super_block *sb, 3207 int *ino_bits_ret, int *lblk_bits_ret) 3208 { 3209 *ino_bits_ret = 8 * sizeof(nid_t); 3210 *lblk_bits_ret = 8 * sizeof(block_t); 3211 } 3212 3213 static struct block_device **f2fs_get_devices(struct super_block *sb, 3214 unsigned int *num_devs) 3215 { 3216 struct f2fs_sb_info *sbi = F2FS_SB(sb); 3217 struct block_device **devs; 3218 int i; 3219 3220 if (!f2fs_is_multi_device(sbi)) 3221 return NULL; 3222 3223 devs = kmalloc_array(sbi->s_ndevs, sizeof(*devs), GFP_KERNEL); 3224 if (!devs) 3225 return ERR_PTR(-ENOMEM); 3226 3227 for (i = 0; i < sbi->s_ndevs; i++) 3228 devs[i] = FDEV(i).bdev; 3229 *num_devs = sbi->s_ndevs; 3230 return devs; 3231 } 3232 3233 static const struct fscrypt_operations f2fs_cryptops = { 3234 .key_prefix = "f2fs:", 3235 .get_context = f2fs_get_context, 3236 .set_context = f2fs_set_context, 3237 .get_dummy_policy = f2fs_get_dummy_policy, 3238 .empty_dir = f2fs_empty_dir, 3239 .has_stable_inodes = f2fs_has_stable_inodes, 3240 .get_ino_and_lblk_bits = f2fs_get_ino_and_lblk_bits, 3241 .get_devices = f2fs_get_devices, 3242 }; 3243 #endif 3244 3245 static struct inode *f2fs_nfs_get_inode(struct super_block *sb, 3246 u64 ino, u32 generation) 3247 { 3248 struct f2fs_sb_info *sbi = F2FS_SB(sb); 3249 struct inode *inode; 3250 3251 if (f2fs_check_nid_range(sbi, ino)) 3252 return ERR_PTR(-ESTALE); 3253 3254 /* 3255 * f2fs_iget isn't quite right if the inode is currently unallocated! 3256 * However f2fs_iget currently does appropriate checks to handle stale 3257 * inodes so everything is OK. 3258 */ 3259 inode = f2fs_iget(sb, ino); 3260 if (IS_ERR(inode)) 3261 return ERR_CAST(inode); 3262 if (unlikely(generation && inode->i_generation != generation)) { 3263 /* we didn't find the right inode.. */ 3264 iput(inode); 3265 return ERR_PTR(-ESTALE); 3266 } 3267 return inode; 3268 } 3269 3270 static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid, 3271 int fh_len, int fh_type) 3272 { 3273 return generic_fh_to_dentry(sb, fid, fh_len, fh_type, 3274 f2fs_nfs_get_inode); 3275 } 3276 3277 static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid, 3278 int fh_len, int fh_type) 3279 { 3280 return generic_fh_to_parent(sb, fid, fh_len, fh_type, 3281 f2fs_nfs_get_inode); 3282 } 3283 3284 static const struct export_operations f2fs_export_ops = { 3285 .fh_to_dentry = f2fs_fh_to_dentry, 3286 .fh_to_parent = f2fs_fh_to_parent, 3287 .get_parent = f2fs_get_parent, 3288 }; 3289 3290 loff_t max_file_blocks(struct inode *inode) 3291 { 3292 loff_t result = 0; 3293 loff_t leaf_count; 3294 3295 /* 3296 * note: previously, result is equal to (DEF_ADDRS_PER_INODE - 3297 * DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more 3298 * space in inode.i_addr, it will be more safe to reassign 3299 * result as zero. 3300 */ 3301 3302 if (inode && f2fs_compressed_file(inode)) 3303 leaf_count = ADDRS_PER_BLOCK(inode); 3304 else 3305 leaf_count = DEF_ADDRS_PER_BLOCK; 3306 3307 /* two direct node blocks */ 3308 result += (leaf_count * 2); 3309 3310 /* two indirect node blocks */ 3311 leaf_count *= NIDS_PER_BLOCK; 3312 result += (leaf_count * 2); 3313 3314 /* one double indirect node block */ 3315 leaf_count *= NIDS_PER_BLOCK; 3316 result += leaf_count; 3317 3318 return result; 3319 } 3320 3321 static int __f2fs_commit_super(struct buffer_head *bh, 3322 struct f2fs_super_block *super) 3323 { 3324 lock_buffer(bh); 3325 if (super) 3326 memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super)); 3327 set_buffer_dirty(bh); 3328 unlock_buffer(bh); 3329 3330 /* it's rare case, we can do fua all the time */ 3331 return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA); 3332 } 3333 3334 static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi, 3335 struct buffer_head *bh) 3336 { 3337 struct f2fs_super_block *raw_super = (struct f2fs_super_block *) 3338 (bh->b_data + F2FS_SUPER_OFFSET); 3339 struct super_block *sb = sbi->sb; 3340 u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr); 3341 u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr); 3342 u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr); 3343 u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr); 3344 u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr); 3345 u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr); 3346 u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt); 3347 u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit); 3348 u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat); 3349 u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa); 3350 u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main); 3351 u32 segment_count = le32_to_cpu(raw_super->segment_count); 3352 u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); 3353 u64 main_end_blkaddr = main_blkaddr + 3354 (segment_count_main << log_blocks_per_seg); 3355 u64 seg_end_blkaddr = segment0_blkaddr + 3356 (segment_count << log_blocks_per_seg); 3357 3358 if (segment0_blkaddr != cp_blkaddr) { 3359 f2fs_info(sbi, "Mismatch start address, segment0(%u) cp_blkaddr(%u)", 3360 segment0_blkaddr, cp_blkaddr); 3361 return true; 3362 } 3363 3364 if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) != 3365 sit_blkaddr) { 3366 f2fs_info(sbi, "Wrong CP boundary, start(%u) end(%u) blocks(%u)", 3367 cp_blkaddr, sit_blkaddr, 3368 segment_count_ckpt << log_blocks_per_seg); 3369 return true; 3370 } 3371 3372 if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) != 3373 nat_blkaddr) { 3374 f2fs_info(sbi, "Wrong SIT boundary, start(%u) end(%u) blocks(%u)", 3375 sit_blkaddr, nat_blkaddr, 3376 segment_count_sit << log_blocks_per_seg); 3377 return true; 3378 } 3379 3380 if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) != 3381 ssa_blkaddr) { 3382 f2fs_info(sbi, "Wrong NAT boundary, start(%u) end(%u) blocks(%u)", 3383 nat_blkaddr, ssa_blkaddr, 3384 segment_count_nat << log_blocks_per_seg); 3385 return true; 3386 } 3387 3388 if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) != 3389 main_blkaddr) { 3390 f2fs_info(sbi, "Wrong SSA boundary, start(%u) end(%u) blocks(%u)", 3391 ssa_blkaddr, main_blkaddr, 3392 segment_count_ssa << log_blocks_per_seg); 3393 return true; 3394 } 3395 3396 if (main_end_blkaddr > seg_end_blkaddr) { 3397 f2fs_info(sbi, "Wrong MAIN_AREA boundary, start(%u) end(%llu) block(%u)", 3398 main_blkaddr, seg_end_blkaddr, 3399 segment_count_main << log_blocks_per_seg); 3400 return true; 3401 } else if (main_end_blkaddr < seg_end_blkaddr) { 3402 int err = 0; 3403 char *res; 3404 3405 /* fix in-memory information all the time */ 3406 raw_super->segment_count = cpu_to_le32((main_end_blkaddr - 3407 segment0_blkaddr) >> log_blocks_per_seg); 3408 3409 if (f2fs_readonly(sb) || f2fs_hw_is_readonly(sbi)) { 3410 set_sbi_flag(sbi, SBI_NEED_SB_WRITE); 3411 res = "internally"; 3412 } else { 3413 err = __f2fs_commit_super(bh, NULL); 3414 res = err ? "failed" : "done"; 3415 } 3416 f2fs_info(sbi, "Fix alignment : %s, start(%u) end(%llu) block(%u)", 3417 res, main_blkaddr, seg_end_blkaddr, 3418 segment_count_main << log_blocks_per_seg); 3419 if (err) 3420 return true; 3421 } 3422 return false; 3423 } 3424 3425 static int sanity_check_raw_super(struct f2fs_sb_info *sbi, 3426 struct buffer_head *bh) 3427 { 3428 block_t segment_count, segs_per_sec, secs_per_zone, segment_count_main; 3429 block_t total_sections, blocks_per_seg; 3430 struct f2fs_super_block *raw_super = (struct f2fs_super_block *) 3431 (bh->b_data + F2FS_SUPER_OFFSET); 3432 size_t crc_offset = 0; 3433 __u32 crc = 0; 3434 3435 if (le32_to_cpu(raw_super->magic) != F2FS_SUPER_MAGIC) { 3436 f2fs_info(sbi, "Magic Mismatch, valid(0x%x) - read(0x%x)", 3437 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic)); 3438 return -EINVAL; 3439 } 3440 3441 /* Check checksum_offset and crc in superblock */ 3442 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_SB_CHKSUM)) { 3443 crc_offset = le32_to_cpu(raw_super->checksum_offset); 3444 if (crc_offset != 3445 offsetof(struct f2fs_super_block, crc)) { 3446 f2fs_info(sbi, "Invalid SB checksum offset: %zu", 3447 crc_offset); 3448 return -EFSCORRUPTED; 3449 } 3450 crc = le32_to_cpu(raw_super->crc); 3451 if (!f2fs_crc_valid(sbi, crc, raw_super, crc_offset)) { 3452 f2fs_info(sbi, "Invalid SB checksum value: %u", crc); 3453 return -EFSCORRUPTED; 3454 } 3455 } 3456 3457 /* Currently, support only 4KB block size */ 3458 if (le32_to_cpu(raw_super->log_blocksize) != F2FS_BLKSIZE_BITS) { 3459 f2fs_info(sbi, "Invalid log_blocksize (%u), supports only %u", 3460 le32_to_cpu(raw_super->log_blocksize), 3461 F2FS_BLKSIZE_BITS); 3462 return -EFSCORRUPTED; 3463 } 3464 3465 /* check log blocks per segment */ 3466 if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) { 3467 f2fs_info(sbi, "Invalid log blocks per segment (%u)", 3468 le32_to_cpu(raw_super->log_blocks_per_seg)); 3469 return -EFSCORRUPTED; 3470 } 3471 3472 /* Currently, support 512/1024/2048/4096 bytes sector size */ 3473 if (le32_to_cpu(raw_super->log_sectorsize) > 3474 F2FS_MAX_LOG_SECTOR_SIZE || 3475 le32_to_cpu(raw_super->log_sectorsize) < 3476 F2FS_MIN_LOG_SECTOR_SIZE) { 3477 f2fs_info(sbi, "Invalid log sectorsize (%u)", 3478 le32_to_cpu(raw_super->log_sectorsize)); 3479 return -EFSCORRUPTED; 3480 } 3481 if (le32_to_cpu(raw_super->log_sectors_per_block) + 3482 le32_to_cpu(raw_super->log_sectorsize) != 3483 F2FS_MAX_LOG_SECTOR_SIZE) { 3484 f2fs_info(sbi, "Invalid log sectors per block(%u) log sectorsize(%u)", 3485 le32_to_cpu(raw_super->log_sectors_per_block), 3486 le32_to_cpu(raw_super->log_sectorsize)); 3487 return -EFSCORRUPTED; 3488 } 3489 3490 segment_count = le32_to_cpu(raw_super->segment_count); 3491 segment_count_main = le32_to_cpu(raw_super->segment_count_main); 3492 segs_per_sec = le32_to_cpu(raw_super->segs_per_sec); 3493 secs_per_zone = le32_to_cpu(raw_super->secs_per_zone); 3494 total_sections = le32_to_cpu(raw_super->section_count); 3495 3496 /* blocks_per_seg should be 512, given the above check */ 3497 blocks_per_seg = BIT(le32_to_cpu(raw_super->log_blocks_per_seg)); 3498 3499 if (segment_count > F2FS_MAX_SEGMENT || 3500 segment_count < F2FS_MIN_SEGMENTS) { 3501 f2fs_info(sbi, "Invalid segment count (%u)", segment_count); 3502 return -EFSCORRUPTED; 3503 } 3504 3505 if (total_sections > segment_count_main || total_sections < 1 || 3506 segs_per_sec > segment_count || !segs_per_sec) { 3507 f2fs_info(sbi, "Invalid segment/section count (%u, %u x %u)", 3508 segment_count, total_sections, segs_per_sec); 3509 return -EFSCORRUPTED; 3510 } 3511 3512 if (segment_count_main != total_sections * segs_per_sec) { 3513 f2fs_info(sbi, "Invalid segment/section count (%u != %u * %u)", 3514 segment_count_main, total_sections, segs_per_sec); 3515 return -EFSCORRUPTED; 3516 } 3517 3518 if ((segment_count / segs_per_sec) < total_sections) { 3519 f2fs_info(sbi, "Small segment_count (%u < %u * %u)", 3520 segment_count, segs_per_sec, total_sections); 3521 return -EFSCORRUPTED; 3522 } 3523 3524 if (segment_count > (le64_to_cpu(raw_super->block_count) >> 9)) { 3525 f2fs_info(sbi, "Wrong segment_count / block_count (%u > %llu)", 3526 segment_count, le64_to_cpu(raw_super->block_count)); 3527 return -EFSCORRUPTED; 3528 } 3529 3530 if (RDEV(0).path[0]) { 3531 block_t dev_seg_count = le32_to_cpu(RDEV(0).total_segments); 3532 int i = 1; 3533 3534 while (i < MAX_DEVICES && RDEV(i).path[0]) { 3535 dev_seg_count += le32_to_cpu(RDEV(i).total_segments); 3536 i++; 3537 } 3538 if (segment_count != dev_seg_count) { 3539 f2fs_info(sbi, "Segment count (%u) mismatch with total segments from devices (%u)", 3540 segment_count, dev_seg_count); 3541 return -EFSCORRUPTED; 3542 } 3543 } else { 3544 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_BLKZONED) && 3545 !bdev_is_zoned(sbi->sb->s_bdev)) { 3546 f2fs_info(sbi, "Zoned block device path is missing"); 3547 return -EFSCORRUPTED; 3548 } 3549 } 3550 3551 if (secs_per_zone > total_sections || !secs_per_zone) { 3552 f2fs_info(sbi, "Wrong secs_per_zone / total_sections (%u, %u)", 3553 secs_per_zone, total_sections); 3554 return -EFSCORRUPTED; 3555 } 3556 if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION || 3557 raw_super->hot_ext_count > F2FS_MAX_EXTENSION || 3558 (le32_to_cpu(raw_super->extension_count) + 3559 raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) { 3560 f2fs_info(sbi, "Corrupted extension count (%u + %u > %u)", 3561 le32_to_cpu(raw_super->extension_count), 3562 raw_super->hot_ext_count, 3563 F2FS_MAX_EXTENSION); 3564 return -EFSCORRUPTED; 3565 } 3566 3567 if (le32_to_cpu(raw_super->cp_payload) >= 3568 (blocks_per_seg - F2FS_CP_PACKS - 3569 NR_CURSEG_PERSIST_TYPE)) { 3570 f2fs_info(sbi, "Insane cp_payload (%u >= %u)", 3571 le32_to_cpu(raw_super->cp_payload), 3572 blocks_per_seg - F2FS_CP_PACKS - 3573 NR_CURSEG_PERSIST_TYPE); 3574 return -EFSCORRUPTED; 3575 } 3576 3577 /* check reserved ino info */ 3578 if (le32_to_cpu(raw_super->node_ino) != 1 || 3579 le32_to_cpu(raw_super->meta_ino) != 2 || 3580 le32_to_cpu(raw_super->root_ino) != 3) { 3581 f2fs_info(sbi, "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)", 3582 le32_to_cpu(raw_super->node_ino), 3583 le32_to_cpu(raw_super->meta_ino), 3584 le32_to_cpu(raw_super->root_ino)); 3585 return -EFSCORRUPTED; 3586 } 3587 3588 /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */ 3589 if (sanity_check_area_boundary(sbi, bh)) 3590 return -EFSCORRUPTED; 3591 3592 return 0; 3593 } 3594 3595 int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi) 3596 { 3597 unsigned int total, fsmeta; 3598 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 3599 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 3600 unsigned int ovp_segments, reserved_segments; 3601 unsigned int main_segs, blocks_per_seg; 3602 unsigned int sit_segs, nat_segs; 3603 unsigned int sit_bitmap_size, nat_bitmap_size; 3604 unsigned int log_blocks_per_seg; 3605 unsigned int segment_count_main; 3606 unsigned int cp_pack_start_sum, cp_payload; 3607 block_t user_block_count, valid_user_blocks; 3608 block_t avail_node_count, valid_node_count; 3609 unsigned int nat_blocks, nat_bits_bytes, nat_bits_blocks; 3610 int i, j; 3611 3612 total = le32_to_cpu(raw_super->segment_count); 3613 fsmeta = le32_to_cpu(raw_super->segment_count_ckpt); 3614 sit_segs = le32_to_cpu(raw_super->segment_count_sit); 3615 fsmeta += sit_segs; 3616 nat_segs = le32_to_cpu(raw_super->segment_count_nat); 3617 fsmeta += nat_segs; 3618 fsmeta += le32_to_cpu(ckpt->rsvd_segment_count); 3619 fsmeta += le32_to_cpu(raw_super->segment_count_ssa); 3620 3621 if (unlikely(fsmeta >= total)) 3622 return 1; 3623 3624 ovp_segments = le32_to_cpu(ckpt->overprov_segment_count); 3625 reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count); 3626 3627 if (!f2fs_sb_has_readonly(sbi) && 3628 unlikely(fsmeta < F2FS_MIN_META_SEGMENTS || 3629 ovp_segments == 0 || reserved_segments == 0)) { 3630 f2fs_err(sbi, "Wrong layout: check mkfs.f2fs version"); 3631 return 1; 3632 } 3633 user_block_count = le64_to_cpu(ckpt->user_block_count); 3634 segment_count_main = le32_to_cpu(raw_super->segment_count_main) + 3635 (f2fs_sb_has_readonly(sbi) ? 1 : 0); 3636 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); 3637 if (!user_block_count || user_block_count >= 3638 segment_count_main << log_blocks_per_seg) { 3639 f2fs_err(sbi, "Wrong user_block_count: %u", 3640 user_block_count); 3641 return 1; 3642 } 3643 3644 valid_user_blocks = le64_to_cpu(ckpt->valid_block_count); 3645 if (valid_user_blocks > user_block_count) { 3646 f2fs_err(sbi, "Wrong valid_user_blocks: %u, user_block_count: %u", 3647 valid_user_blocks, user_block_count); 3648 return 1; 3649 } 3650 3651 valid_node_count = le32_to_cpu(ckpt->valid_node_count); 3652 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM; 3653 if (valid_node_count > avail_node_count) { 3654 f2fs_err(sbi, "Wrong valid_node_count: %u, avail_node_count: %u", 3655 valid_node_count, avail_node_count); 3656 return 1; 3657 } 3658 3659 main_segs = le32_to_cpu(raw_super->segment_count_main); 3660 blocks_per_seg = sbi->blocks_per_seg; 3661 3662 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { 3663 if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs || 3664 le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg) 3665 return 1; 3666 3667 if (f2fs_sb_has_readonly(sbi)) 3668 goto check_data; 3669 3670 for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) { 3671 if (le32_to_cpu(ckpt->cur_node_segno[i]) == 3672 le32_to_cpu(ckpt->cur_node_segno[j])) { 3673 f2fs_err(sbi, "Node segment (%u, %u) has the same segno: %u", 3674 i, j, 3675 le32_to_cpu(ckpt->cur_node_segno[i])); 3676 return 1; 3677 } 3678 } 3679 } 3680 check_data: 3681 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) { 3682 if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs || 3683 le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg) 3684 return 1; 3685 3686 if (f2fs_sb_has_readonly(sbi)) 3687 goto skip_cross; 3688 3689 for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) { 3690 if (le32_to_cpu(ckpt->cur_data_segno[i]) == 3691 le32_to_cpu(ckpt->cur_data_segno[j])) { 3692 f2fs_err(sbi, "Data segment (%u, %u) has the same segno: %u", 3693 i, j, 3694 le32_to_cpu(ckpt->cur_data_segno[i])); 3695 return 1; 3696 } 3697 } 3698 } 3699 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { 3700 for (j = 0; j < NR_CURSEG_DATA_TYPE; j++) { 3701 if (le32_to_cpu(ckpt->cur_node_segno[i]) == 3702 le32_to_cpu(ckpt->cur_data_segno[j])) { 3703 f2fs_err(sbi, "Node segment (%u) and Data segment (%u) has the same segno: %u", 3704 i, j, 3705 le32_to_cpu(ckpt->cur_node_segno[i])); 3706 return 1; 3707 } 3708 } 3709 } 3710 skip_cross: 3711 sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize); 3712 nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize); 3713 3714 if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 || 3715 nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) { 3716 f2fs_err(sbi, "Wrong bitmap size: sit: %u, nat:%u", 3717 sit_bitmap_size, nat_bitmap_size); 3718 return 1; 3719 } 3720 3721 cp_pack_start_sum = __start_sum_addr(sbi); 3722 cp_payload = __cp_payload(sbi); 3723 if (cp_pack_start_sum < cp_payload + 1 || 3724 cp_pack_start_sum > blocks_per_seg - 1 - 3725 NR_CURSEG_PERSIST_TYPE) { 3726 f2fs_err(sbi, "Wrong cp_pack_start_sum: %u", 3727 cp_pack_start_sum); 3728 return 1; 3729 } 3730 3731 if (__is_set_ckpt_flags(ckpt, CP_LARGE_NAT_BITMAP_FLAG) && 3732 le32_to_cpu(ckpt->checksum_offset) != CP_MIN_CHKSUM_OFFSET) { 3733 f2fs_warn(sbi, "using deprecated layout of large_nat_bitmap, " 3734 "please run fsck v1.13.0 or higher to repair, chksum_offset: %u, " 3735 "fixed with patch: \"f2fs-tools: relocate chksum_offset for large_nat_bitmap feature\"", 3736 le32_to_cpu(ckpt->checksum_offset)); 3737 return 1; 3738 } 3739 3740 nat_blocks = nat_segs << log_blocks_per_seg; 3741 nat_bits_bytes = nat_blocks / BITS_PER_BYTE; 3742 nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8); 3743 if (__is_set_ckpt_flags(ckpt, CP_NAT_BITS_FLAG) && 3744 (cp_payload + F2FS_CP_PACKS + 3745 NR_CURSEG_PERSIST_TYPE + nat_bits_blocks >= blocks_per_seg)) { 3746 f2fs_warn(sbi, "Insane cp_payload: %u, nat_bits_blocks: %u)", 3747 cp_payload, nat_bits_blocks); 3748 return 1; 3749 } 3750 3751 if (unlikely(f2fs_cp_error(sbi))) { 3752 f2fs_err(sbi, "A bug case: need to run fsck"); 3753 return 1; 3754 } 3755 return 0; 3756 } 3757 3758 static void init_sb_info(struct f2fs_sb_info *sbi) 3759 { 3760 struct f2fs_super_block *raw_super = sbi->raw_super; 3761 int i; 3762 3763 sbi->log_sectors_per_block = 3764 le32_to_cpu(raw_super->log_sectors_per_block); 3765 sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize); 3766 sbi->blocksize = BIT(sbi->log_blocksize); 3767 sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); 3768 sbi->blocks_per_seg = BIT(sbi->log_blocks_per_seg); 3769 sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec); 3770 sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone); 3771 sbi->total_sections = le32_to_cpu(raw_super->section_count); 3772 sbi->total_node_count = 3773 (le32_to_cpu(raw_super->segment_count_nat) / 2) 3774 * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK; 3775 F2FS_ROOT_INO(sbi) = le32_to_cpu(raw_super->root_ino); 3776 F2FS_NODE_INO(sbi) = le32_to_cpu(raw_super->node_ino); 3777 F2FS_META_INO(sbi) = le32_to_cpu(raw_super->meta_ino); 3778 sbi->cur_victim_sec = NULL_SECNO; 3779 sbi->gc_mode = GC_NORMAL; 3780 sbi->next_victim_seg[BG_GC] = NULL_SEGNO; 3781 sbi->next_victim_seg[FG_GC] = NULL_SEGNO; 3782 sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH; 3783 sbi->migration_granularity = sbi->segs_per_sec; 3784 sbi->seq_file_ra_mul = MIN_RA_MUL; 3785 sbi->max_fragment_chunk = DEF_FRAGMENT_SIZE; 3786 sbi->max_fragment_hole = DEF_FRAGMENT_SIZE; 3787 spin_lock_init(&sbi->gc_remaining_trials_lock); 3788 atomic64_set(&sbi->current_atomic_write, 0); 3789 3790 sbi->dir_level = DEF_DIR_LEVEL; 3791 sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL; 3792 sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL; 3793 sbi->interval_time[DISCARD_TIME] = DEF_IDLE_INTERVAL; 3794 sbi->interval_time[GC_TIME] = DEF_IDLE_INTERVAL; 3795 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_INTERVAL; 3796 sbi->interval_time[UMOUNT_DISCARD_TIMEOUT] = 3797 DEF_UMOUNT_DISCARD_TIMEOUT; 3798 clear_sbi_flag(sbi, SBI_NEED_FSCK); 3799 3800 for (i = 0; i < NR_COUNT_TYPE; i++) 3801 atomic_set(&sbi->nr_pages[i], 0); 3802 3803 for (i = 0; i < META; i++) 3804 atomic_set(&sbi->wb_sync_req[i], 0); 3805 3806 INIT_LIST_HEAD(&sbi->s_list); 3807 mutex_init(&sbi->umount_mutex); 3808 init_f2fs_rwsem(&sbi->io_order_lock); 3809 spin_lock_init(&sbi->cp_lock); 3810 3811 sbi->dirty_device = 0; 3812 spin_lock_init(&sbi->dev_lock); 3813 3814 init_f2fs_rwsem(&sbi->sb_lock); 3815 init_f2fs_rwsem(&sbi->pin_sem); 3816 } 3817 3818 static int init_percpu_info(struct f2fs_sb_info *sbi) 3819 { 3820 int err; 3821 3822 err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL); 3823 if (err) 3824 return err; 3825 3826 err = percpu_counter_init(&sbi->rf_node_block_count, 0, GFP_KERNEL); 3827 if (err) 3828 goto err_valid_block; 3829 3830 err = percpu_counter_init(&sbi->total_valid_inode_count, 0, 3831 GFP_KERNEL); 3832 if (err) 3833 goto err_node_block; 3834 return 0; 3835 3836 err_node_block: 3837 percpu_counter_destroy(&sbi->rf_node_block_count); 3838 err_valid_block: 3839 percpu_counter_destroy(&sbi->alloc_valid_block_count); 3840 return err; 3841 } 3842 3843 #ifdef CONFIG_BLK_DEV_ZONED 3844 3845 struct f2fs_report_zones_args { 3846 struct f2fs_sb_info *sbi; 3847 struct f2fs_dev_info *dev; 3848 }; 3849 3850 static int f2fs_report_zone_cb(struct blk_zone *zone, unsigned int idx, 3851 void *data) 3852 { 3853 struct f2fs_report_zones_args *rz_args = data; 3854 block_t unusable_blocks = (zone->len - zone->capacity) >> 3855 F2FS_LOG_SECTORS_PER_BLOCK; 3856 3857 if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL) 3858 return 0; 3859 3860 set_bit(idx, rz_args->dev->blkz_seq); 3861 if (!rz_args->sbi->unusable_blocks_per_sec) { 3862 rz_args->sbi->unusable_blocks_per_sec = unusable_blocks; 3863 return 0; 3864 } 3865 if (rz_args->sbi->unusable_blocks_per_sec != unusable_blocks) { 3866 f2fs_err(rz_args->sbi, "F2FS supports single zone capacity\n"); 3867 return -EINVAL; 3868 } 3869 return 0; 3870 } 3871 3872 static int init_blkz_info(struct f2fs_sb_info *sbi, int devi) 3873 { 3874 struct block_device *bdev = FDEV(devi).bdev; 3875 sector_t nr_sectors = bdev_nr_sectors(bdev); 3876 struct f2fs_report_zones_args rep_zone_arg; 3877 u64 zone_sectors; 3878 int ret; 3879 3880 if (!f2fs_sb_has_blkzoned(sbi)) 3881 return 0; 3882 3883 zone_sectors = bdev_zone_sectors(bdev); 3884 if (!is_power_of_2(zone_sectors)) { 3885 f2fs_err(sbi, "F2FS does not support non power of 2 zone sizes\n"); 3886 return -EINVAL; 3887 } 3888 3889 if (sbi->blocks_per_blkz && sbi->blocks_per_blkz != 3890 SECTOR_TO_BLOCK(zone_sectors)) 3891 return -EINVAL; 3892 sbi->blocks_per_blkz = SECTOR_TO_BLOCK(zone_sectors); 3893 FDEV(devi).nr_blkz = div_u64(SECTOR_TO_BLOCK(nr_sectors), 3894 sbi->blocks_per_blkz); 3895 if (nr_sectors & (zone_sectors - 1)) 3896 FDEV(devi).nr_blkz++; 3897 3898 FDEV(devi).blkz_seq = f2fs_kvzalloc(sbi, 3899 BITS_TO_LONGS(FDEV(devi).nr_blkz) 3900 * sizeof(unsigned long), 3901 GFP_KERNEL); 3902 if (!FDEV(devi).blkz_seq) 3903 return -ENOMEM; 3904 3905 rep_zone_arg.sbi = sbi; 3906 rep_zone_arg.dev = &FDEV(devi); 3907 3908 ret = blkdev_report_zones(bdev, 0, BLK_ALL_ZONES, f2fs_report_zone_cb, 3909 &rep_zone_arg); 3910 if (ret < 0) 3911 return ret; 3912 return 0; 3913 } 3914 #endif 3915 3916 /* 3917 * Read f2fs raw super block. 3918 * Because we have two copies of super block, so read both of them 3919 * to get the first valid one. If any one of them is broken, we pass 3920 * them recovery flag back to the caller. 3921 */ 3922 static int read_raw_super_block(struct f2fs_sb_info *sbi, 3923 struct f2fs_super_block **raw_super, 3924 int *valid_super_block, int *recovery) 3925 { 3926 struct super_block *sb = sbi->sb; 3927 int block; 3928 struct buffer_head *bh; 3929 struct f2fs_super_block *super; 3930 int err = 0; 3931 3932 super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL); 3933 if (!super) 3934 return -ENOMEM; 3935 3936 for (block = 0; block < 2; block++) { 3937 bh = sb_bread(sb, block); 3938 if (!bh) { 3939 f2fs_err(sbi, "Unable to read %dth superblock", 3940 block + 1); 3941 err = -EIO; 3942 *recovery = 1; 3943 continue; 3944 } 3945 3946 /* sanity checking of raw super */ 3947 err = sanity_check_raw_super(sbi, bh); 3948 if (err) { 3949 f2fs_err(sbi, "Can't find valid F2FS filesystem in %dth superblock", 3950 block + 1); 3951 brelse(bh); 3952 *recovery = 1; 3953 continue; 3954 } 3955 3956 if (!*raw_super) { 3957 memcpy(super, bh->b_data + F2FS_SUPER_OFFSET, 3958 sizeof(*super)); 3959 *valid_super_block = block; 3960 *raw_super = super; 3961 } 3962 brelse(bh); 3963 } 3964 3965 /* No valid superblock */ 3966 if (!*raw_super) 3967 kfree(super); 3968 else 3969 err = 0; 3970 3971 return err; 3972 } 3973 3974 int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover) 3975 { 3976 struct buffer_head *bh; 3977 __u32 crc = 0; 3978 int err; 3979 3980 if ((recover && f2fs_readonly(sbi->sb)) || 3981 f2fs_hw_is_readonly(sbi)) { 3982 set_sbi_flag(sbi, SBI_NEED_SB_WRITE); 3983 return -EROFS; 3984 } 3985 3986 /* we should update superblock crc here */ 3987 if (!recover && f2fs_sb_has_sb_chksum(sbi)) { 3988 crc = f2fs_crc32(sbi, F2FS_RAW_SUPER(sbi), 3989 offsetof(struct f2fs_super_block, crc)); 3990 F2FS_RAW_SUPER(sbi)->crc = cpu_to_le32(crc); 3991 } 3992 3993 /* write back-up superblock first */ 3994 bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1); 3995 if (!bh) 3996 return -EIO; 3997 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi)); 3998 brelse(bh); 3999 4000 /* if we are in recovery path, skip writing valid superblock */ 4001 if (recover || err) 4002 return err; 4003 4004 /* write current valid superblock */ 4005 bh = sb_bread(sbi->sb, sbi->valid_super_block); 4006 if (!bh) 4007 return -EIO; 4008 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi)); 4009 brelse(bh); 4010 return err; 4011 } 4012 4013 static void save_stop_reason(struct f2fs_sb_info *sbi, unsigned char reason) 4014 { 4015 unsigned long flags; 4016 4017 spin_lock_irqsave(&sbi->error_lock, flags); 4018 if (sbi->stop_reason[reason] < GENMASK(BITS_PER_BYTE - 1, 0)) 4019 sbi->stop_reason[reason]++; 4020 spin_unlock_irqrestore(&sbi->error_lock, flags); 4021 } 4022 4023 static void f2fs_record_stop_reason(struct f2fs_sb_info *sbi) 4024 { 4025 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 4026 unsigned long flags; 4027 int err; 4028 4029 f2fs_down_write(&sbi->sb_lock); 4030 4031 spin_lock_irqsave(&sbi->error_lock, flags); 4032 if (sbi->error_dirty) { 4033 memcpy(F2FS_RAW_SUPER(sbi)->s_errors, sbi->errors, 4034 MAX_F2FS_ERRORS); 4035 sbi->error_dirty = false; 4036 } 4037 memcpy(raw_super->s_stop_reason, sbi->stop_reason, MAX_STOP_REASON); 4038 spin_unlock_irqrestore(&sbi->error_lock, flags); 4039 4040 err = f2fs_commit_super(sbi, false); 4041 4042 f2fs_up_write(&sbi->sb_lock); 4043 if (err) 4044 f2fs_err(sbi, "f2fs_commit_super fails to record err:%d", err); 4045 } 4046 4047 void f2fs_save_errors(struct f2fs_sb_info *sbi, unsigned char flag) 4048 { 4049 unsigned long flags; 4050 4051 spin_lock_irqsave(&sbi->error_lock, flags); 4052 if (!test_bit(flag, (unsigned long *)sbi->errors)) { 4053 set_bit(flag, (unsigned long *)sbi->errors); 4054 sbi->error_dirty = true; 4055 } 4056 spin_unlock_irqrestore(&sbi->error_lock, flags); 4057 } 4058 4059 static bool f2fs_update_errors(struct f2fs_sb_info *sbi) 4060 { 4061 unsigned long flags; 4062 bool need_update = false; 4063 4064 spin_lock_irqsave(&sbi->error_lock, flags); 4065 if (sbi->error_dirty) { 4066 memcpy(F2FS_RAW_SUPER(sbi)->s_errors, sbi->errors, 4067 MAX_F2FS_ERRORS); 4068 sbi->error_dirty = false; 4069 need_update = true; 4070 } 4071 spin_unlock_irqrestore(&sbi->error_lock, flags); 4072 4073 return need_update; 4074 } 4075 4076 static void f2fs_record_errors(struct f2fs_sb_info *sbi, unsigned char error) 4077 { 4078 int err; 4079 4080 f2fs_down_write(&sbi->sb_lock); 4081 4082 if (!f2fs_update_errors(sbi)) 4083 goto out_unlock; 4084 4085 err = f2fs_commit_super(sbi, false); 4086 if (err) 4087 f2fs_err(sbi, "f2fs_commit_super fails to record errors:%u, err:%d", 4088 error, err); 4089 out_unlock: 4090 f2fs_up_write(&sbi->sb_lock); 4091 } 4092 4093 void f2fs_handle_error(struct f2fs_sb_info *sbi, unsigned char error) 4094 { 4095 f2fs_save_errors(sbi, error); 4096 f2fs_record_errors(sbi, error); 4097 } 4098 4099 void f2fs_handle_error_async(struct f2fs_sb_info *sbi, unsigned char error) 4100 { 4101 f2fs_save_errors(sbi, error); 4102 4103 if (!sbi->error_dirty) 4104 return; 4105 if (!test_bit(error, (unsigned long *)sbi->errors)) 4106 return; 4107 schedule_work(&sbi->s_error_work); 4108 } 4109 4110 static bool system_going_down(void) 4111 { 4112 return system_state == SYSTEM_HALT || system_state == SYSTEM_POWER_OFF 4113 || system_state == SYSTEM_RESTART; 4114 } 4115 4116 void f2fs_handle_critical_error(struct f2fs_sb_info *sbi, unsigned char reason, 4117 bool irq_context) 4118 { 4119 struct super_block *sb = sbi->sb; 4120 bool shutdown = reason == STOP_CP_REASON_SHUTDOWN; 4121 bool continue_fs = !shutdown && 4122 F2FS_OPTION(sbi).errors == MOUNT_ERRORS_CONTINUE; 4123 4124 set_ckpt_flags(sbi, CP_ERROR_FLAG); 4125 4126 if (!f2fs_hw_is_readonly(sbi)) { 4127 save_stop_reason(sbi, reason); 4128 4129 if (irq_context && !shutdown) 4130 schedule_work(&sbi->s_error_work); 4131 else 4132 f2fs_record_stop_reason(sbi); 4133 } 4134 4135 /* 4136 * We force ERRORS_RO behavior when system is rebooting. Otherwise we 4137 * could panic during 'reboot -f' as the underlying device got already 4138 * disabled. 4139 */ 4140 if (F2FS_OPTION(sbi).errors == MOUNT_ERRORS_PANIC && 4141 !shutdown && !system_going_down() && 4142 !is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN)) 4143 panic("F2FS-fs (device %s): panic forced after error\n", 4144 sb->s_id); 4145 4146 if (shutdown) 4147 set_sbi_flag(sbi, SBI_IS_SHUTDOWN); 4148 4149 /* continue filesystem operators if errors=continue */ 4150 if (continue_fs || f2fs_readonly(sb)) 4151 return; 4152 4153 f2fs_warn(sbi, "Remounting filesystem read-only"); 4154 /* 4155 * Make sure updated value of ->s_mount_flags will be visible before 4156 * ->s_flags update 4157 */ 4158 smp_wmb(); 4159 sb->s_flags |= SB_RDONLY; 4160 } 4161 4162 static void f2fs_record_error_work(struct work_struct *work) 4163 { 4164 struct f2fs_sb_info *sbi = container_of(work, 4165 struct f2fs_sb_info, s_error_work); 4166 4167 f2fs_record_stop_reason(sbi); 4168 } 4169 4170 static int f2fs_scan_devices(struct f2fs_sb_info *sbi) 4171 { 4172 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 4173 unsigned int max_devices = MAX_DEVICES; 4174 unsigned int logical_blksize; 4175 blk_mode_t mode = sb_open_mode(sbi->sb->s_flags); 4176 int i; 4177 4178 /* Initialize single device information */ 4179 if (!RDEV(0).path[0]) { 4180 if (!bdev_is_zoned(sbi->sb->s_bdev)) 4181 return 0; 4182 max_devices = 1; 4183 } 4184 4185 /* 4186 * Initialize multiple devices information, or single 4187 * zoned block device information. 4188 */ 4189 sbi->devs = f2fs_kzalloc(sbi, 4190 array_size(max_devices, 4191 sizeof(struct f2fs_dev_info)), 4192 GFP_KERNEL); 4193 if (!sbi->devs) 4194 return -ENOMEM; 4195 4196 logical_blksize = bdev_logical_block_size(sbi->sb->s_bdev); 4197 sbi->aligned_blksize = true; 4198 4199 for (i = 0; i < max_devices; i++) { 4200 if (i == 0) 4201 FDEV(0).bdev = sbi->sb->s_bdev; 4202 else if (!RDEV(i).path[0]) 4203 break; 4204 4205 if (max_devices > 1) { 4206 /* Multi-device mount */ 4207 memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN); 4208 FDEV(i).total_segments = 4209 le32_to_cpu(RDEV(i).total_segments); 4210 if (i == 0) { 4211 FDEV(i).start_blk = 0; 4212 FDEV(i).end_blk = FDEV(i).start_blk + 4213 (FDEV(i).total_segments << 4214 sbi->log_blocks_per_seg) - 1 + 4215 le32_to_cpu(raw_super->segment0_blkaddr); 4216 } else { 4217 FDEV(i).start_blk = FDEV(i - 1).end_blk + 1; 4218 FDEV(i).end_blk = FDEV(i).start_blk + 4219 (FDEV(i).total_segments << 4220 sbi->log_blocks_per_seg) - 1; 4221 FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path, 4222 mode, sbi->sb, NULL); 4223 } 4224 } 4225 if (IS_ERR(FDEV(i).bdev)) 4226 return PTR_ERR(FDEV(i).bdev); 4227 4228 /* to release errored devices */ 4229 sbi->s_ndevs = i + 1; 4230 4231 if (logical_blksize != bdev_logical_block_size(FDEV(i).bdev)) 4232 sbi->aligned_blksize = false; 4233 4234 #ifdef CONFIG_BLK_DEV_ZONED 4235 if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM && 4236 !f2fs_sb_has_blkzoned(sbi)) { 4237 f2fs_err(sbi, "Zoned block device feature not enabled"); 4238 return -EINVAL; 4239 } 4240 if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) { 4241 if (init_blkz_info(sbi, i)) { 4242 f2fs_err(sbi, "Failed to initialize F2FS blkzone information"); 4243 return -EINVAL; 4244 } 4245 if (max_devices == 1) 4246 break; 4247 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)", 4248 i, FDEV(i).path, 4249 FDEV(i).total_segments, 4250 FDEV(i).start_blk, FDEV(i).end_blk, 4251 bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ? 4252 "Host-aware" : "Host-managed"); 4253 continue; 4254 } 4255 #endif 4256 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x", 4257 i, FDEV(i).path, 4258 FDEV(i).total_segments, 4259 FDEV(i).start_blk, FDEV(i).end_blk); 4260 } 4261 f2fs_info(sbi, 4262 "IO Block Size: %8ld KB", F2FS_IO_SIZE_KB(sbi)); 4263 return 0; 4264 } 4265 4266 static int f2fs_setup_casefold(struct f2fs_sb_info *sbi) 4267 { 4268 #if IS_ENABLED(CONFIG_UNICODE) 4269 if (f2fs_sb_has_casefold(sbi) && !sbi->sb->s_encoding) { 4270 const struct f2fs_sb_encodings *encoding_info; 4271 struct unicode_map *encoding; 4272 __u16 encoding_flags; 4273 4274 encoding_info = f2fs_sb_read_encoding(sbi->raw_super); 4275 if (!encoding_info) { 4276 f2fs_err(sbi, 4277 "Encoding requested by superblock is unknown"); 4278 return -EINVAL; 4279 } 4280 4281 encoding_flags = le16_to_cpu(sbi->raw_super->s_encoding_flags); 4282 encoding = utf8_load(encoding_info->version); 4283 if (IS_ERR(encoding)) { 4284 f2fs_err(sbi, 4285 "can't mount with superblock charset: %s-%u.%u.%u " 4286 "not supported by the kernel. flags: 0x%x.", 4287 encoding_info->name, 4288 unicode_major(encoding_info->version), 4289 unicode_minor(encoding_info->version), 4290 unicode_rev(encoding_info->version), 4291 encoding_flags); 4292 return PTR_ERR(encoding); 4293 } 4294 f2fs_info(sbi, "Using encoding defined by superblock: " 4295 "%s-%u.%u.%u with flags 0x%hx", encoding_info->name, 4296 unicode_major(encoding_info->version), 4297 unicode_minor(encoding_info->version), 4298 unicode_rev(encoding_info->version), 4299 encoding_flags); 4300 4301 sbi->sb->s_encoding = encoding; 4302 sbi->sb->s_encoding_flags = encoding_flags; 4303 } 4304 #else 4305 if (f2fs_sb_has_casefold(sbi)) { 4306 f2fs_err(sbi, "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE"); 4307 return -EINVAL; 4308 } 4309 #endif 4310 return 0; 4311 } 4312 4313 static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi) 4314 { 4315 /* adjust parameters according to the volume size */ 4316 if (MAIN_SEGS(sbi) <= SMALL_VOLUME_SEGMENTS) { 4317 if (f2fs_block_unit_discard(sbi)) 4318 SM_I(sbi)->dcc_info->discard_granularity = 4319 MIN_DISCARD_GRANULARITY; 4320 if (!f2fs_lfs_mode(sbi)) 4321 SM_I(sbi)->ipu_policy = BIT(F2FS_IPU_FORCE) | 4322 BIT(F2FS_IPU_HONOR_OPU_WRITE); 4323 } 4324 4325 sbi->readdir_ra = true; 4326 } 4327 4328 static int f2fs_fill_super(struct super_block *sb, void *data, int silent) 4329 { 4330 struct f2fs_sb_info *sbi; 4331 struct f2fs_super_block *raw_super; 4332 struct inode *root; 4333 int err; 4334 bool skip_recovery = false, need_fsck = false; 4335 char *options = NULL; 4336 int recovery, i, valid_super_block; 4337 struct curseg_info *seg_i; 4338 int retry_cnt = 1; 4339 #ifdef CONFIG_QUOTA 4340 bool quota_enabled = false; 4341 #endif 4342 4343 try_onemore: 4344 err = -EINVAL; 4345 raw_super = NULL; 4346 valid_super_block = -1; 4347 recovery = 0; 4348 4349 /* allocate memory for f2fs-specific super block info */ 4350 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL); 4351 if (!sbi) 4352 return -ENOMEM; 4353 4354 sbi->sb = sb; 4355 4356 /* initialize locks within allocated memory */ 4357 init_f2fs_rwsem(&sbi->gc_lock); 4358 mutex_init(&sbi->writepages); 4359 init_f2fs_rwsem(&sbi->cp_global_sem); 4360 init_f2fs_rwsem(&sbi->node_write); 4361 init_f2fs_rwsem(&sbi->node_change); 4362 spin_lock_init(&sbi->stat_lock); 4363 init_f2fs_rwsem(&sbi->cp_rwsem); 4364 init_f2fs_rwsem(&sbi->quota_sem); 4365 init_waitqueue_head(&sbi->cp_wait); 4366 spin_lock_init(&sbi->error_lock); 4367 4368 for (i = 0; i < NR_INODE_TYPE; i++) { 4369 INIT_LIST_HEAD(&sbi->inode_list[i]); 4370 spin_lock_init(&sbi->inode_lock[i]); 4371 } 4372 mutex_init(&sbi->flush_lock); 4373 4374 /* Load the checksum driver */ 4375 sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0); 4376 if (IS_ERR(sbi->s_chksum_driver)) { 4377 f2fs_err(sbi, "Cannot load crc32 driver."); 4378 err = PTR_ERR(sbi->s_chksum_driver); 4379 sbi->s_chksum_driver = NULL; 4380 goto free_sbi; 4381 } 4382 4383 /* set a block size */ 4384 if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) { 4385 f2fs_err(sbi, "unable to set blocksize"); 4386 goto free_sbi; 4387 } 4388 4389 err = read_raw_super_block(sbi, &raw_super, &valid_super_block, 4390 &recovery); 4391 if (err) 4392 goto free_sbi; 4393 4394 sb->s_fs_info = sbi; 4395 sbi->raw_super = raw_super; 4396 4397 INIT_WORK(&sbi->s_error_work, f2fs_record_error_work); 4398 memcpy(sbi->errors, raw_super->s_errors, MAX_F2FS_ERRORS); 4399 memcpy(sbi->stop_reason, raw_super->s_stop_reason, MAX_STOP_REASON); 4400 4401 /* precompute checksum seed for metadata */ 4402 if (f2fs_sb_has_inode_chksum(sbi)) 4403 sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid, 4404 sizeof(raw_super->uuid)); 4405 4406 default_options(sbi, false); 4407 /* parse mount options */ 4408 options = kstrdup((const char *)data, GFP_KERNEL); 4409 if (data && !options) { 4410 err = -ENOMEM; 4411 goto free_sb_buf; 4412 } 4413 4414 err = parse_options(sb, options, false); 4415 if (err) 4416 goto free_options; 4417 4418 sb->s_maxbytes = max_file_blocks(NULL) << 4419 le32_to_cpu(raw_super->log_blocksize); 4420 sb->s_max_links = F2FS_LINK_MAX; 4421 4422 err = f2fs_setup_casefold(sbi); 4423 if (err) 4424 goto free_options; 4425 4426 #ifdef CONFIG_QUOTA 4427 sb->dq_op = &f2fs_quota_operations; 4428 sb->s_qcop = &f2fs_quotactl_ops; 4429 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ; 4430 4431 if (f2fs_sb_has_quota_ino(sbi)) { 4432 for (i = 0; i < MAXQUOTAS; i++) { 4433 if (f2fs_qf_ino(sbi->sb, i)) 4434 sbi->nquota_files++; 4435 } 4436 } 4437 #endif 4438 4439 sb->s_op = &f2fs_sops; 4440 #ifdef CONFIG_FS_ENCRYPTION 4441 sb->s_cop = &f2fs_cryptops; 4442 #endif 4443 #ifdef CONFIG_FS_VERITY 4444 sb->s_vop = &f2fs_verityops; 4445 #endif 4446 sb->s_xattr = f2fs_xattr_handlers; 4447 sb->s_export_op = &f2fs_export_ops; 4448 sb->s_magic = F2FS_SUPER_MAGIC; 4449 sb->s_time_gran = 1; 4450 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) | 4451 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0); 4452 memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid)); 4453 sb->s_iflags |= SB_I_CGROUPWB; 4454 4455 /* init f2fs-specific super block info */ 4456 sbi->valid_super_block = valid_super_block; 4457 4458 /* disallow all the data/node/meta page writes */ 4459 set_sbi_flag(sbi, SBI_POR_DOING); 4460 4461 err = f2fs_init_write_merge_io(sbi); 4462 if (err) 4463 goto free_bio_info; 4464 4465 init_sb_info(sbi); 4466 4467 err = f2fs_init_iostat(sbi); 4468 if (err) 4469 goto free_bio_info; 4470 4471 err = init_percpu_info(sbi); 4472 if (err) 4473 goto free_iostat; 4474 4475 if (F2FS_IO_ALIGNED(sbi)) { 4476 sbi->write_io_dummy = 4477 mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0); 4478 if (!sbi->write_io_dummy) { 4479 err = -ENOMEM; 4480 goto free_percpu; 4481 } 4482 } 4483 4484 /* init per sbi slab cache */ 4485 err = f2fs_init_xattr_caches(sbi); 4486 if (err) 4487 goto free_io_dummy; 4488 err = f2fs_init_page_array_cache(sbi); 4489 if (err) 4490 goto free_xattr_cache; 4491 4492 /* get an inode for meta space */ 4493 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi)); 4494 if (IS_ERR(sbi->meta_inode)) { 4495 f2fs_err(sbi, "Failed to read F2FS meta data inode"); 4496 err = PTR_ERR(sbi->meta_inode); 4497 goto free_page_array_cache; 4498 } 4499 4500 err = f2fs_get_valid_checkpoint(sbi); 4501 if (err) { 4502 f2fs_err(sbi, "Failed to get valid F2FS checkpoint"); 4503 goto free_meta_inode; 4504 } 4505 4506 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_QUOTA_NEED_FSCK_FLAG)) 4507 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 4508 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_DISABLED_QUICK_FLAG)) { 4509 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK); 4510 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL; 4511 } 4512 4513 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FSCK_FLAG)) 4514 set_sbi_flag(sbi, SBI_NEED_FSCK); 4515 4516 /* Initialize device list */ 4517 err = f2fs_scan_devices(sbi); 4518 if (err) { 4519 f2fs_err(sbi, "Failed to find devices"); 4520 goto free_devices; 4521 } 4522 4523 err = f2fs_init_post_read_wq(sbi); 4524 if (err) { 4525 f2fs_err(sbi, "Failed to initialize post read workqueue"); 4526 goto free_devices; 4527 } 4528 4529 sbi->total_valid_node_count = 4530 le32_to_cpu(sbi->ckpt->valid_node_count); 4531 percpu_counter_set(&sbi->total_valid_inode_count, 4532 le32_to_cpu(sbi->ckpt->valid_inode_count)); 4533 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count); 4534 sbi->total_valid_block_count = 4535 le64_to_cpu(sbi->ckpt->valid_block_count); 4536 sbi->last_valid_block_count = sbi->total_valid_block_count; 4537 sbi->reserved_blocks = 0; 4538 sbi->current_reserved_blocks = 0; 4539 limit_reserve_root(sbi); 4540 adjust_unusable_cap_perc(sbi); 4541 4542 f2fs_init_extent_cache_info(sbi); 4543 4544 f2fs_init_ino_entry_info(sbi); 4545 4546 f2fs_init_fsync_node_info(sbi); 4547 4548 /* setup checkpoint request control and start checkpoint issue thread */ 4549 f2fs_init_ckpt_req_control(sbi); 4550 if (!f2fs_readonly(sb) && !test_opt(sbi, DISABLE_CHECKPOINT) && 4551 test_opt(sbi, MERGE_CHECKPOINT)) { 4552 err = f2fs_start_ckpt_thread(sbi); 4553 if (err) { 4554 f2fs_err(sbi, 4555 "Failed to start F2FS issue_checkpoint_thread (%d)", 4556 err); 4557 goto stop_ckpt_thread; 4558 } 4559 } 4560 4561 /* setup f2fs internal modules */ 4562 err = f2fs_build_segment_manager(sbi); 4563 if (err) { 4564 f2fs_err(sbi, "Failed to initialize F2FS segment manager (%d)", 4565 err); 4566 goto free_sm; 4567 } 4568 err = f2fs_build_node_manager(sbi); 4569 if (err) { 4570 f2fs_err(sbi, "Failed to initialize F2FS node manager (%d)", 4571 err); 4572 goto free_nm; 4573 } 4574 4575 err = adjust_reserved_segment(sbi); 4576 if (err) 4577 goto free_nm; 4578 4579 /* For write statistics */ 4580 sbi->sectors_written_start = f2fs_get_sectors_written(sbi); 4581 4582 /* Read accumulated write IO statistics if exists */ 4583 seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE); 4584 if (__exist_node_summaries(sbi)) 4585 sbi->kbytes_written = 4586 le64_to_cpu(seg_i->journal->info.kbytes_written); 4587 4588 f2fs_build_gc_manager(sbi); 4589 4590 err = f2fs_build_stats(sbi); 4591 if (err) 4592 goto free_nm; 4593 4594 /* get an inode for node space */ 4595 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi)); 4596 if (IS_ERR(sbi->node_inode)) { 4597 f2fs_err(sbi, "Failed to read node inode"); 4598 err = PTR_ERR(sbi->node_inode); 4599 goto free_stats; 4600 } 4601 4602 /* read root inode and dentry */ 4603 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi)); 4604 if (IS_ERR(root)) { 4605 f2fs_err(sbi, "Failed to read root inode"); 4606 err = PTR_ERR(root); 4607 goto free_node_inode; 4608 } 4609 if (!S_ISDIR(root->i_mode) || !root->i_blocks || 4610 !root->i_size || !root->i_nlink) { 4611 iput(root); 4612 err = -EINVAL; 4613 goto free_node_inode; 4614 } 4615 4616 sb->s_root = d_make_root(root); /* allocate root dentry */ 4617 if (!sb->s_root) { 4618 err = -ENOMEM; 4619 goto free_node_inode; 4620 } 4621 4622 err = f2fs_init_compress_inode(sbi); 4623 if (err) 4624 goto free_root_inode; 4625 4626 err = f2fs_register_sysfs(sbi); 4627 if (err) 4628 goto free_compress_inode; 4629 4630 #ifdef CONFIG_QUOTA 4631 /* Enable quota usage during mount */ 4632 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) { 4633 err = f2fs_enable_quotas(sb); 4634 if (err) 4635 f2fs_err(sbi, "Cannot turn on quotas: error %d", err); 4636 } 4637 4638 quota_enabled = f2fs_recover_quota_begin(sbi); 4639 #endif 4640 /* if there are any orphan inodes, free them */ 4641 err = f2fs_recover_orphan_inodes(sbi); 4642 if (err) 4643 goto free_meta; 4644 4645 if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG))) 4646 goto reset_checkpoint; 4647 4648 /* recover fsynced data */ 4649 if (!test_opt(sbi, DISABLE_ROLL_FORWARD) && 4650 !test_opt(sbi, NORECOVERY)) { 4651 /* 4652 * mount should be failed, when device has readonly mode, and 4653 * previous checkpoint was not done by clean system shutdown. 4654 */ 4655 if (f2fs_hw_is_readonly(sbi)) { 4656 if (!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) { 4657 err = f2fs_recover_fsync_data(sbi, true); 4658 if (err > 0) { 4659 err = -EROFS; 4660 f2fs_err(sbi, "Need to recover fsync data, but " 4661 "write access unavailable, please try " 4662 "mount w/ disable_roll_forward or norecovery"); 4663 } 4664 if (err < 0) 4665 goto free_meta; 4666 } 4667 f2fs_info(sbi, "write access unavailable, skipping recovery"); 4668 goto reset_checkpoint; 4669 } 4670 4671 if (need_fsck) 4672 set_sbi_flag(sbi, SBI_NEED_FSCK); 4673 4674 if (skip_recovery) 4675 goto reset_checkpoint; 4676 4677 err = f2fs_recover_fsync_data(sbi, false); 4678 if (err < 0) { 4679 if (err != -ENOMEM) 4680 skip_recovery = true; 4681 need_fsck = true; 4682 f2fs_err(sbi, "Cannot recover all fsync data errno=%d", 4683 err); 4684 goto free_meta; 4685 } 4686 } else { 4687 err = f2fs_recover_fsync_data(sbi, true); 4688 4689 if (!f2fs_readonly(sb) && err > 0) { 4690 err = -EINVAL; 4691 f2fs_err(sbi, "Need to recover fsync data"); 4692 goto free_meta; 4693 } 4694 } 4695 4696 #ifdef CONFIG_QUOTA 4697 f2fs_recover_quota_end(sbi, quota_enabled); 4698 #endif 4699 4700 /* 4701 * If the f2fs is not readonly and fsync data recovery succeeds, 4702 * check zoned block devices' write pointer consistency. 4703 */ 4704 if (!err && !f2fs_readonly(sb) && f2fs_sb_has_blkzoned(sbi)) { 4705 err = f2fs_check_write_pointer(sbi); 4706 if (err) 4707 goto free_meta; 4708 } 4709 4710 reset_checkpoint: 4711 f2fs_init_inmem_curseg(sbi); 4712 4713 /* f2fs_recover_fsync_data() cleared this already */ 4714 clear_sbi_flag(sbi, SBI_POR_DOING); 4715 4716 if (test_opt(sbi, DISABLE_CHECKPOINT)) { 4717 err = f2fs_disable_checkpoint(sbi); 4718 if (err) 4719 goto sync_free_meta; 4720 } else if (is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)) { 4721 f2fs_enable_checkpoint(sbi); 4722 } 4723 4724 /* 4725 * If filesystem is not mounted as read-only then 4726 * do start the gc_thread. 4727 */ 4728 if ((F2FS_OPTION(sbi).bggc_mode != BGGC_MODE_OFF || 4729 test_opt(sbi, GC_MERGE)) && !f2fs_readonly(sb)) { 4730 /* After POR, we can run background GC thread.*/ 4731 err = f2fs_start_gc_thread(sbi); 4732 if (err) 4733 goto sync_free_meta; 4734 } 4735 kvfree(options); 4736 4737 /* recover broken superblock */ 4738 if (recovery) { 4739 err = f2fs_commit_super(sbi, true); 4740 f2fs_info(sbi, "Try to recover %dth superblock, ret: %d", 4741 sbi->valid_super_block ? 1 : 2, err); 4742 } 4743 4744 f2fs_join_shrinker(sbi); 4745 4746 f2fs_tuning_parameters(sbi); 4747 4748 f2fs_notice(sbi, "Mounted with checkpoint version = %llx", 4749 cur_cp_version(F2FS_CKPT(sbi))); 4750 f2fs_update_time(sbi, CP_TIME); 4751 f2fs_update_time(sbi, REQ_TIME); 4752 clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK); 4753 return 0; 4754 4755 sync_free_meta: 4756 /* safe to flush all the data */ 4757 sync_filesystem(sbi->sb); 4758 retry_cnt = 0; 4759 4760 free_meta: 4761 #ifdef CONFIG_QUOTA 4762 f2fs_truncate_quota_inode_pages(sb); 4763 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) 4764 f2fs_quota_off_umount(sbi->sb); 4765 #endif 4766 /* 4767 * Some dirty meta pages can be produced by f2fs_recover_orphan_inodes() 4768 * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg() 4769 * followed by f2fs_write_checkpoint() through f2fs_write_node_pages(), which 4770 * falls into an infinite loop in f2fs_sync_meta_pages(). 4771 */ 4772 truncate_inode_pages_final(META_MAPPING(sbi)); 4773 /* evict some inodes being cached by GC */ 4774 evict_inodes(sb); 4775 f2fs_unregister_sysfs(sbi); 4776 free_compress_inode: 4777 f2fs_destroy_compress_inode(sbi); 4778 free_root_inode: 4779 dput(sb->s_root); 4780 sb->s_root = NULL; 4781 free_node_inode: 4782 f2fs_release_ino_entry(sbi, true); 4783 truncate_inode_pages_final(NODE_MAPPING(sbi)); 4784 iput(sbi->node_inode); 4785 sbi->node_inode = NULL; 4786 free_stats: 4787 f2fs_destroy_stats(sbi); 4788 free_nm: 4789 /* stop discard thread before destroying node manager */ 4790 f2fs_stop_discard_thread(sbi); 4791 f2fs_destroy_node_manager(sbi); 4792 free_sm: 4793 f2fs_destroy_segment_manager(sbi); 4794 stop_ckpt_thread: 4795 f2fs_stop_ckpt_thread(sbi); 4796 /* flush s_error_work before sbi destroy */ 4797 flush_work(&sbi->s_error_work); 4798 f2fs_destroy_post_read_wq(sbi); 4799 free_devices: 4800 destroy_device_list(sbi); 4801 kvfree(sbi->ckpt); 4802 free_meta_inode: 4803 make_bad_inode(sbi->meta_inode); 4804 iput(sbi->meta_inode); 4805 sbi->meta_inode = NULL; 4806 free_page_array_cache: 4807 f2fs_destroy_page_array_cache(sbi); 4808 free_xattr_cache: 4809 f2fs_destroy_xattr_caches(sbi); 4810 free_io_dummy: 4811 mempool_destroy(sbi->write_io_dummy); 4812 free_percpu: 4813 destroy_percpu_info(sbi); 4814 free_iostat: 4815 f2fs_destroy_iostat(sbi); 4816 free_bio_info: 4817 for (i = 0; i < NR_PAGE_TYPE; i++) 4818 kvfree(sbi->write_io[i]); 4819 4820 #if IS_ENABLED(CONFIG_UNICODE) 4821 utf8_unload(sb->s_encoding); 4822 sb->s_encoding = NULL; 4823 #endif 4824 free_options: 4825 #ifdef CONFIG_QUOTA 4826 for (i = 0; i < MAXQUOTAS; i++) 4827 kfree(F2FS_OPTION(sbi).s_qf_names[i]); 4828 #endif 4829 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy); 4830 kvfree(options); 4831 free_sb_buf: 4832 kfree(raw_super); 4833 free_sbi: 4834 if (sbi->s_chksum_driver) 4835 crypto_free_shash(sbi->s_chksum_driver); 4836 kfree(sbi); 4837 4838 /* give only one another chance */ 4839 if (retry_cnt > 0 && skip_recovery) { 4840 retry_cnt--; 4841 shrink_dcache_sb(sb); 4842 goto try_onemore; 4843 } 4844 return err; 4845 } 4846 4847 static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags, 4848 const char *dev_name, void *data) 4849 { 4850 return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super); 4851 } 4852 4853 static void kill_f2fs_super(struct super_block *sb) 4854 { 4855 if (sb->s_root) { 4856 struct f2fs_sb_info *sbi = F2FS_SB(sb); 4857 4858 set_sbi_flag(sbi, SBI_IS_CLOSE); 4859 f2fs_stop_gc_thread(sbi); 4860 f2fs_stop_discard_thread(sbi); 4861 4862 #ifdef CONFIG_F2FS_FS_COMPRESSION 4863 /* 4864 * latter evict_inode() can bypass checking and invalidating 4865 * compress inode cache. 4866 */ 4867 if (test_opt(sbi, COMPRESS_CACHE)) 4868 truncate_inode_pages_final(COMPRESS_MAPPING(sbi)); 4869 #endif 4870 4871 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) || 4872 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) { 4873 struct cp_control cpc = { 4874 .reason = CP_UMOUNT, 4875 }; 4876 stat_inc_cp_call_count(sbi, TOTAL_CALL); 4877 f2fs_write_checkpoint(sbi, &cpc); 4878 } 4879 4880 if (is_sbi_flag_set(sbi, SBI_IS_RECOVERED) && f2fs_readonly(sb)) 4881 sb->s_flags &= ~SB_RDONLY; 4882 } 4883 kill_block_super(sb); 4884 } 4885 4886 static struct file_system_type f2fs_fs_type = { 4887 .owner = THIS_MODULE, 4888 .name = "f2fs", 4889 .mount = f2fs_mount, 4890 .kill_sb = kill_f2fs_super, 4891 .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP, 4892 }; 4893 MODULE_ALIAS_FS("f2fs"); 4894 4895 static int __init init_inodecache(void) 4896 { 4897 f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache", 4898 sizeof(struct f2fs_inode_info), 0, 4899 SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL); 4900 return f2fs_inode_cachep ? 0 : -ENOMEM; 4901 } 4902 4903 static void destroy_inodecache(void) 4904 { 4905 /* 4906 * Make sure all delayed rcu free inodes are flushed before we 4907 * destroy cache. 4908 */ 4909 rcu_barrier(); 4910 kmem_cache_destroy(f2fs_inode_cachep); 4911 } 4912 4913 static int __init init_f2fs_fs(void) 4914 { 4915 int err; 4916 4917 if (PAGE_SIZE != F2FS_BLKSIZE) { 4918 printk("F2FS not supported on PAGE_SIZE(%lu) != %d\n", 4919 PAGE_SIZE, F2FS_BLKSIZE); 4920 return -EINVAL; 4921 } 4922 4923 err = init_inodecache(); 4924 if (err) 4925 goto fail; 4926 err = f2fs_create_node_manager_caches(); 4927 if (err) 4928 goto free_inodecache; 4929 err = f2fs_create_segment_manager_caches(); 4930 if (err) 4931 goto free_node_manager_caches; 4932 err = f2fs_create_checkpoint_caches(); 4933 if (err) 4934 goto free_segment_manager_caches; 4935 err = f2fs_create_recovery_cache(); 4936 if (err) 4937 goto free_checkpoint_caches; 4938 err = f2fs_create_extent_cache(); 4939 if (err) 4940 goto free_recovery_cache; 4941 err = f2fs_create_garbage_collection_cache(); 4942 if (err) 4943 goto free_extent_cache; 4944 err = f2fs_init_sysfs(); 4945 if (err) 4946 goto free_garbage_collection_cache; 4947 err = register_shrinker(&f2fs_shrinker_info, "f2fs-shrinker"); 4948 if (err) 4949 goto free_sysfs; 4950 err = register_filesystem(&f2fs_fs_type); 4951 if (err) 4952 goto free_shrinker; 4953 f2fs_create_root_stats(); 4954 err = f2fs_init_post_read_processing(); 4955 if (err) 4956 goto free_root_stats; 4957 err = f2fs_init_iostat_processing(); 4958 if (err) 4959 goto free_post_read; 4960 err = f2fs_init_bio_entry_cache(); 4961 if (err) 4962 goto free_iostat; 4963 err = f2fs_init_bioset(); 4964 if (err) 4965 goto free_bio_entry_cache; 4966 err = f2fs_init_compress_mempool(); 4967 if (err) 4968 goto free_bioset; 4969 err = f2fs_init_compress_cache(); 4970 if (err) 4971 goto free_compress_mempool; 4972 err = f2fs_create_casefold_cache(); 4973 if (err) 4974 goto free_compress_cache; 4975 return 0; 4976 free_compress_cache: 4977 f2fs_destroy_compress_cache(); 4978 free_compress_mempool: 4979 f2fs_destroy_compress_mempool(); 4980 free_bioset: 4981 f2fs_destroy_bioset(); 4982 free_bio_entry_cache: 4983 f2fs_destroy_bio_entry_cache(); 4984 free_iostat: 4985 f2fs_destroy_iostat_processing(); 4986 free_post_read: 4987 f2fs_destroy_post_read_processing(); 4988 free_root_stats: 4989 f2fs_destroy_root_stats(); 4990 unregister_filesystem(&f2fs_fs_type); 4991 free_shrinker: 4992 unregister_shrinker(&f2fs_shrinker_info); 4993 free_sysfs: 4994 f2fs_exit_sysfs(); 4995 free_garbage_collection_cache: 4996 f2fs_destroy_garbage_collection_cache(); 4997 free_extent_cache: 4998 f2fs_destroy_extent_cache(); 4999 free_recovery_cache: 5000 f2fs_destroy_recovery_cache(); 5001 free_checkpoint_caches: 5002 f2fs_destroy_checkpoint_caches(); 5003 free_segment_manager_caches: 5004 f2fs_destroy_segment_manager_caches(); 5005 free_node_manager_caches: 5006 f2fs_destroy_node_manager_caches(); 5007 free_inodecache: 5008 destroy_inodecache(); 5009 fail: 5010 return err; 5011 } 5012 5013 static void __exit exit_f2fs_fs(void) 5014 { 5015 f2fs_destroy_casefold_cache(); 5016 f2fs_destroy_compress_cache(); 5017 f2fs_destroy_compress_mempool(); 5018 f2fs_destroy_bioset(); 5019 f2fs_destroy_bio_entry_cache(); 5020 f2fs_destroy_iostat_processing(); 5021 f2fs_destroy_post_read_processing(); 5022 f2fs_destroy_root_stats(); 5023 unregister_filesystem(&f2fs_fs_type); 5024 unregister_shrinker(&f2fs_shrinker_info); 5025 f2fs_exit_sysfs(); 5026 f2fs_destroy_garbage_collection_cache(); 5027 f2fs_destroy_extent_cache(); 5028 f2fs_destroy_recovery_cache(); 5029 f2fs_destroy_checkpoint_caches(); 5030 f2fs_destroy_segment_manager_caches(); 5031 f2fs_destroy_node_manager_caches(); 5032 destroy_inodecache(); 5033 } 5034 5035 module_init(init_f2fs_fs) 5036 module_exit(exit_f2fs_fs) 5037 5038 MODULE_AUTHOR("Samsung Electronics's Praesto Team"); 5039 MODULE_DESCRIPTION("Flash Friendly File System"); 5040 MODULE_LICENSE("GPL"); 5041 MODULE_SOFTDEP("pre: crc32"); 5042 5043