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 }; 65 66 void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate, 67 unsigned int type) 68 { 69 struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info; 70 71 if (rate) { 72 atomic_set(&ffi->inject_ops, 0); 73 ffi->inject_rate = rate; 74 } 75 76 if (type) 77 ffi->inject_type = type; 78 79 if (!rate && !type) 80 memset(ffi, 0, sizeof(struct f2fs_fault_info)); 81 } 82 #endif 83 84 /* f2fs-wide shrinker description */ 85 static struct shrinker f2fs_shrinker_info = { 86 .scan_objects = f2fs_shrink_scan, 87 .count_objects = f2fs_shrink_count, 88 .seeks = DEFAULT_SEEKS, 89 }; 90 91 enum { 92 Opt_gc_background, 93 Opt_disable_roll_forward, 94 Opt_norecovery, 95 Opt_discard, 96 Opt_nodiscard, 97 Opt_noheap, 98 Opt_heap, 99 Opt_user_xattr, 100 Opt_nouser_xattr, 101 Opt_acl, 102 Opt_noacl, 103 Opt_active_logs, 104 Opt_disable_ext_identify, 105 Opt_inline_xattr, 106 Opt_noinline_xattr, 107 Opt_inline_xattr_size, 108 Opt_inline_data, 109 Opt_inline_dentry, 110 Opt_noinline_dentry, 111 Opt_flush_merge, 112 Opt_noflush_merge, 113 Opt_nobarrier, 114 Opt_fastboot, 115 Opt_extent_cache, 116 Opt_noextent_cache, 117 Opt_noinline_data, 118 Opt_data_flush, 119 Opt_reserve_root, 120 Opt_resgid, 121 Opt_resuid, 122 Opt_mode, 123 Opt_io_size_bits, 124 Opt_fault_injection, 125 Opt_fault_type, 126 Opt_lazytime, 127 Opt_nolazytime, 128 Opt_quota, 129 Opt_noquota, 130 Opt_usrquota, 131 Opt_grpquota, 132 Opt_prjquota, 133 Opt_usrjquota, 134 Opt_grpjquota, 135 Opt_prjjquota, 136 Opt_offusrjquota, 137 Opt_offgrpjquota, 138 Opt_offprjjquota, 139 Opt_jqfmt_vfsold, 140 Opt_jqfmt_vfsv0, 141 Opt_jqfmt_vfsv1, 142 Opt_alloc, 143 Opt_fsync, 144 Opt_test_dummy_encryption, 145 Opt_inlinecrypt, 146 Opt_checkpoint_disable, 147 Opt_checkpoint_disable_cap, 148 Opt_checkpoint_disable_cap_perc, 149 Opt_checkpoint_enable, 150 Opt_checkpoint_merge, 151 Opt_nocheckpoint_merge, 152 Opt_compress_algorithm, 153 Opt_compress_log_size, 154 Opt_compress_extension, 155 Opt_nocompress_extension, 156 Opt_compress_chksum, 157 Opt_compress_mode, 158 Opt_compress_cache, 159 Opt_atgc, 160 Opt_gc_merge, 161 Opt_nogc_merge, 162 Opt_discard_unit, 163 Opt_memory_mode, 164 Opt_err, 165 }; 166 167 static match_table_t f2fs_tokens = { 168 {Opt_gc_background, "background_gc=%s"}, 169 {Opt_disable_roll_forward, "disable_roll_forward"}, 170 {Opt_norecovery, "norecovery"}, 171 {Opt_discard, "discard"}, 172 {Opt_nodiscard, "nodiscard"}, 173 {Opt_noheap, "no_heap"}, 174 {Opt_heap, "heap"}, 175 {Opt_user_xattr, "user_xattr"}, 176 {Opt_nouser_xattr, "nouser_xattr"}, 177 {Opt_acl, "acl"}, 178 {Opt_noacl, "noacl"}, 179 {Opt_active_logs, "active_logs=%u"}, 180 {Opt_disable_ext_identify, "disable_ext_identify"}, 181 {Opt_inline_xattr, "inline_xattr"}, 182 {Opt_noinline_xattr, "noinline_xattr"}, 183 {Opt_inline_xattr_size, "inline_xattr_size=%u"}, 184 {Opt_inline_data, "inline_data"}, 185 {Opt_inline_dentry, "inline_dentry"}, 186 {Opt_noinline_dentry, "noinline_dentry"}, 187 {Opt_flush_merge, "flush_merge"}, 188 {Opt_noflush_merge, "noflush_merge"}, 189 {Opt_nobarrier, "nobarrier"}, 190 {Opt_fastboot, "fastboot"}, 191 {Opt_extent_cache, "extent_cache"}, 192 {Opt_noextent_cache, "noextent_cache"}, 193 {Opt_noinline_data, "noinline_data"}, 194 {Opt_data_flush, "data_flush"}, 195 {Opt_reserve_root, "reserve_root=%u"}, 196 {Opt_resgid, "resgid=%u"}, 197 {Opt_resuid, "resuid=%u"}, 198 {Opt_mode, "mode=%s"}, 199 {Opt_io_size_bits, "io_bits=%u"}, 200 {Opt_fault_injection, "fault_injection=%u"}, 201 {Opt_fault_type, "fault_type=%u"}, 202 {Opt_lazytime, "lazytime"}, 203 {Opt_nolazytime, "nolazytime"}, 204 {Opt_quota, "quota"}, 205 {Opt_noquota, "noquota"}, 206 {Opt_usrquota, "usrquota"}, 207 {Opt_grpquota, "grpquota"}, 208 {Opt_prjquota, "prjquota"}, 209 {Opt_usrjquota, "usrjquota=%s"}, 210 {Opt_grpjquota, "grpjquota=%s"}, 211 {Opt_prjjquota, "prjjquota=%s"}, 212 {Opt_offusrjquota, "usrjquota="}, 213 {Opt_offgrpjquota, "grpjquota="}, 214 {Opt_offprjjquota, "prjjquota="}, 215 {Opt_jqfmt_vfsold, "jqfmt=vfsold"}, 216 {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"}, 217 {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"}, 218 {Opt_alloc, "alloc_mode=%s"}, 219 {Opt_fsync, "fsync_mode=%s"}, 220 {Opt_test_dummy_encryption, "test_dummy_encryption=%s"}, 221 {Opt_test_dummy_encryption, "test_dummy_encryption"}, 222 {Opt_inlinecrypt, "inlinecrypt"}, 223 {Opt_checkpoint_disable, "checkpoint=disable"}, 224 {Opt_checkpoint_disable_cap, "checkpoint=disable:%u"}, 225 {Opt_checkpoint_disable_cap_perc, "checkpoint=disable:%u%%"}, 226 {Opt_checkpoint_enable, "checkpoint=enable"}, 227 {Opt_checkpoint_merge, "checkpoint_merge"}, 228 {Opt_nocheckpoint_merge, "nocheckpoint_merge"}, 229 {Opt_compress_algorithm, "compress_algorithm=%s"}, 230 {Opt_compress_log_size, "compress_log_size=%u"}, 231 {Opt_compress_extension, "compress_extension=%s"}, 232 {Opt_nocompress_extension, "nocompress_extension=%s"}, 233 {Opt_compress_chksum, "compress_chksum"}, 234 {Opt_compress_mode, "compress_mode=%s"}, 235 {Opt_compress_cache, "compress_cache"}, 236 {Opt_atgc, "atgc"}, 237 {Opt_gc_merge, "gc_merge"}, 238 {Opt_nogc_merge, "nogc_merge"}, 239 {Opt_discard_unit, "discard_unit=%s"}, 240 {Opt_memory_mode, "memory=%s"}, 241 {Opt_err, NULL}, 242 }; 243 244 void f2fs_printk(struct f2fs_sb_info *sbi, const char *fmt, ...) 245 { 246 struct va_format vaf; 247 va_list args; 248 int level; 249 250 va_start(args, fmt); 251 252 level = printk_get_level(fmt); 253 vaf.fmt = printk_skip_level(fmt); 254 vaf.va = &args; 255 printk("%c%cF2FS-fs (%s): %pV\n", 256 KERN_SOH_ASCII, level, sbi->sb->s_id, &vaf); 257 258 va_end(args); 259 } 260 261 #if IS_ENABLED(CONFIG_UNICODE) 262 static const struct f2fs_sb_encodings { 263 __u16 magic; 264 char *name; 265 unsigned int version; 266 } f2fs_sb_encoding_map[] = { 267 {F2FS_ENC_UTF8_12_1, "utf8", UNICODE_AGE(12, 1, 0)}, 268 }; 269 270 static const struct f2fs_sb_encodings * 271 f2fs_sb_read_encoding(const struct f2fs_super_block *sb) 272 { 273 __u16 magic = le16_to_cpu(sb->s_encoding); 274 int i; 275 276 for (i = 0; i < ARRAY_SIZE(f2fs_sb_encoding_map); i++) 277 if (magic == f2fs_sb_encoding_map[i].magic) 278 return &f2fs_sb_encoding_map[i]; 279 280 return NULL; 281 } 282 283 struct kmem_cache *f2fs_cf_name_slab; 284 static int __init f2fs_create_casefold_cache(void) 285 { 286 f2fs_cf_name_slab = f2fs_kmem_cache_create("f2fs_casefolded_name", 287 F2FS_NAME_LEN); 288 if (!f2fs_cf_name_slab) 289 return -ENOMEM; 290 return 0; 291 } 292 293 static void f2fs_destroy_casefold_cache(void) 294 { 295 kmem_cache_destroy(f2fs_cf_name_slab); 296 } 297 #else 298 static int __init f2fs_create_casefold_cache(void) { return 0; } 299 static void f2fs_destroy_casefold_cache(void) { } 300 #endif 301 302 static inline void limit_reserve_root(struct f2fs_sb_info *sbi) 303 { 304 block_t limit = min((sbi->user_block_count >> 3), 305 sbi->user_block_count - sbi->reserved_blocks); 306 307 /* limit is 12.5% */ 308 if (test_opt(sbi, RESERVE_ROOT) && 309 F2FS_OPTION(sbi).root_reserved_blocks > limit) { 310 F2FS_OPTION(sbi).root_reserved_blocks = limit; 311 f2fs_info(sbi, "Reduce reserved blocks for root = %u", 312 F2FS_OPTION(sbi).root_reserved_blocks); 313 } 314 if (!test_opt(sbi, RESERVE_ROOT) && 315 (!uid_eq(F2FS_OPTION(sbi).s_resuid, 316 make_kuid(&init_user_ns, F2FS_DEF_RESUID)) || 317 !gid_eq(F2FS_OPTION(sbi).s_resgid, 318 make_kgid(&init_user_ns, F2FS_DEF_RESGID)))) 319 f2fs_info(sbi, "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root", 320 from_kuid_munged(&init_user_ns, 321 F2FS_OPTION(sbi).s_resuid), 322 from_kgid_munged(&init_user_ns, 323 F2FS_OPTION(sbi).s_resgid)); 324 } 325 326 static inline int adjust_reserved_segment(struct f2fs_sb_info *sbi) 327 { 328 unsigned int sec_blks = sbi->blocks_per_seg * sbi->segs_per_sec; 329 unsigned int avg_vblocks; 330 unsigned int wanted_reserved_segments; 331 block_t avail_user_block_count; 332 333 if (!F2FS_IO_ALIGNED(sbi)) 334 return 0; 335 336 /* average valid block count in section in worst case */ 337 avg_vblocks = sec_blks / F2FS_IO_SIZE(sbi); 338 339 /* 340 * we need enough free space when migrating one section in worst case 341 */ 342 wanted_reserved_segments = (F2FS_IO_SIZE(sbi) / avg_vblocks) * 343 reserved_segments(sbi); 344 wanted_reserved_segments -= reserved_segments(sbi); 345 346 avail_user_block_count = sbi->user_block_count - 347 sbi->current_reserved_blocks - 348 F2FS_OPTION(sbi).root_reserved_blocks; 349 350 if (wanted_reserved_segments * sbi->blocks_per_seg > 351 avail_user_block_count) { 352 f2fs_err(sbi, "IO align feature can't grab additional reserved segment: %u, available segments: %u", 353 wanted_reserved_segments, 354 avail_user_block_count >> sbi->log_blocks_per_seg); 355 return -ENOSPC; 356 } 357 358 SM_I(sbi)->additional_reserved_segments = wanted_reserved_segments; 359 360 f2fs_info(sbi, "IO align feature needs additional reserved segment: %u", 361 wanted_reserved_segments); 362 363 return 0; 364 } 365 366 static inline void adjust_unusable_cap_perc(struct f2fs_sb_info *sbi) 367 { 368 if (!F2FS_OPTION(sbi).unusable_cap_perc) 369 return; 370 371 if (F2FS_OPTION(sbi).unusable_cap_perc == 100) 372 F2FS_OPTION(sbi).unusable_cap = sbi->user_block_count; 373 else 374 F2FS_OPTION(sbi).unusable_cap = (sbi->user_block_count / 100) * 375 F2FS_OPTION(sbi).unusable_cap_perc; 376 377 f2fs_info(sbi, "Adjust unusable cap for checkpoint=disable = %u / %u%%", 378 F2FS_OPTION(sbi).unusable_cap, 379 F2FS_OPTION(sbi).unusable_cap_perc); 380 } 381 382 static void init_once(void *foo) 383 { 384 struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo; 385 386 inode_init_once(&fi->vfs_inode); 387 } 388 389 #ifdef CONFIG_QUOTA 390 static const char * const quotatypes[] = INITQFNAMES; 391 #define QTYPE2NAME(t) (quotatypes[t]) 392 static int f2fs_set_qf_name(struct super_block *sb, int qtype, 393 substring_t *args) 394 { 395 struct f2fs_sb_info *sbi = F2FS_SB(sb); 396 char *qname; 397 int ret = -EINVAL; 398 399 if (sb_any_quota_loaded(sb) && !F2FS_OPTION(sbi).s_qf_names[qtype]) { 400 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on"); 401 return -EINVAL; 402 } 403 if (f2fs_sb_has_quota_ino(sbi)) { 404 f2fs_info(sbi, "QUOTA feature is enabled, so ignore qf_name"); 405 return 0; 406 } 407 408 qname = match_strdup(args); 409 if (!qname) { 410 f2fs_err(sbi, "Not enough memory for storing quotafile name"); 411 return -ENOMEM; 412 } 413 if (F2FS_OPTION(sbi).s_qf_names[qtype]) { 414 if (strcmp(F2FS_OPTION(sbi).s_qf_names[qtype], qname) == 0) 415 ret = 0; 416 else 417 f2fs_err(sbi, "%s quota file already specified", 418 QTYPE2NAME(qtype)); 419 goto errout; 420 } 421 if (strchr(qname, '/')) { 422 f2fs_err(sbi, "quotafile must be on filesystem root"); 423 goto errout; 424 } 425 F2FS_OPTION(sbi).s_qf_names[qtype] = qname; 426 set_opt(sbi, QUOTA); 427 return 0; 428 errout: 429 kfree(qname); 430 return ret; 431 } 432 433 static int f2fs_clear_qf_name(struct super_block *sb, int qtype) 434 { 435 struct f2fs_sb_info *sbi = F2FS_SB(sb); 436 437 if (sb_any_quota_loaded(sb) && F2FS_OPTION(sbi).s_qf_names[qtype]) { 438 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on"); 439 return -EINVAL; 440 } 441 kfree(F2FS_OPTION(sbi).s_qf_names[qtype]); 442 F2FS_OPTION(sbi).s_qf_names[qtype] = NULL; 443 return 0; 444 } 445 446 static int f2fs_check_quota_options(struct f2fs_sb_info *sbi) 447 { 448 /* 449 * We do the test below only for project quotas. 'usrquota' and 450 * 'grpquota' mount options are allowed even without quota feature 451 * to support legacy quotas in quota files. 452 */ 453 if (test_opt(sbi, PRJQUOTA) && !f2fs_sb_has_project_quota(sbi)) { 454 f2fs_err(sbi, "Project quota feature not enabled. Cannot enable project quota enforcement."); 455 return -1; 456 } 457 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] || 458 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] || 459 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) { 460 if (test_opt(sbi, USRQUOTA) && 461 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]) 462 clear_opt(sbi, USRQUOTA); 463 464 if (test_opt(sbi, GRPQUOTA) && 465 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]) 466 clear_opt(sbi, GRPQUOTA); 467 468 if (test_opt(sbi, PRJQUOTA) && 469 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) 470 clear_opt(sbi, PRJQUOTA); 471 472 if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) || 473 test_opt(sbi, PRJQUOTA)) { 474 f2fs_err(sbi, "old and new quota format mixing"); 475 return -1; 476 } 477 478 if (!F2FS_OPTION(sbi).s_jquota_fmt) { 479 f2fs_err(sbi, "journaled quota format not specified"); 480 return -1; 481 } 482 } 483 484 if (f2fs_sb_has_quota_ino(sbi) && F2FS_OPTION(sbi).s_jquota_fmt) { 485 f2fs_info(sbi, "QUOTA feature is enabled, so ignore jquota_fmt"); 486 F2FS_OPTION(sbi).s_jquota_fmt = 0; 487 } 488 return 0; 489 } 490 #endif 491 492 static int f2fs_set_test_dummy_encryption(struct super_block *sb, 493 const char *opt, 494 const substring_t *arg, 495 bool is_remount) 496 { 497 struct f2fs_sb_info *sbi = F2FS_SB(sb); 498 struct fs_parameter param = { 499 .type = fs_value_is_string, 500 .string = arg->from ? arg->from : "", 501 }; 502 struct fscrypt_dummy_policy *policy = 503 &F2FS_OPTION(sbi).dummy_enc_policy; 504 int err; 505 506 if (!IS_ENABLED(CONFIG_FS_ENCRYPTION)) { 507 f2fs_warn(sbi, "test_dummy_encryption option not supported"); 508 return -EINVAL; 509 } 510 511 if (!f2fs_sb_has_encrypt(sbi)) { 512 f2fs_err(sbi, "Encrypt feature is off"); 513 return -EINVAL; 514 } 515 516 /* 517 * This mount option is just for testing, and it's not worthwhile to 518 * implement the extra complexity (e.g. RCU protection) that would be 519 * needed to allow it to be set or changed during remount. We do allow 520 * it to be specified during remount, but only if there is no change. 521 */ 522 if (is_remount && !fscrypt_is_dummy_policy_set(policy)) { 523 f2fs_warn(sbi, "Can't set test_dummy_encryption on remount"); 524 return -EINVAL; 525 } 526 527 err = fscrypt_parse_test_dummy_encryption(¶m, policy); 528 if (err) { 529 if (err == -EEXIST) 530 f2fs_warn(sbi, 531 "Can't change test_dummy_encryption on remount"); 532 else if (err == -EINVAL) 533 f2fs_warn(sbi, "Value of option \"%s\" is unrecognized", 534 opt); 535 else 536 f2fs_warn(sbi, "Error processing option \"%s\" [%d]", 537 opt, err); 538 return -EINVAL; 539 } 540 err = fscrypt_add_test_dummy_key(sb, policy); 541 if (err) { 542 f2fs_warn(sbi, "Error adding test dummy encryption key [%d]", 543 err); 544 return err; 545 } 546 f2fs_warn(sbi, "Test dummy encryption mode enabled"); 547 return 0; 548 } 549 550 #ifdef CONFIG_F2FS_FS_COMPRESSION 551 /* 552 * 1. The same extension name cannot not appear in both compress and non-compress extension 553 * at the same time. 554 * 2. If the compress extension specifies all files, the types specified by the non-compress 555 * extension will be treated as special cases and will not be compressed. 556 * 3. Don't allow the non-compress extension specifies all files. 557 */ 558 static int f2fs_test_compress_extension(struct f2fs_sb_info *sbi) 559 { 560 unsigned char (*ext)[F2FS_EXTENSION_LEN]; 561 unsigned char (*noext)[F2FS_EXTENSION_LEN]; 562 int ext_cnt, noext_cnt, index = 0, no_index = 0; 563 564 ext = F2FS_OPTION(sbi).extensions; 565 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt; 566 noext = F2FS_OPTION(sbi).noextensions; 567 noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt; 568 569 if (!noext_cnt) 570 return 0; 571 572 for (no_index = 0; no_index < noext_cnt; no_index++) { 573 if (!strcasecmp("*", noext[no_index])) { 574 f2fs_info(sbi, "Don't allow the nocompress extension specifies all files"); 575 return -EINVAL; 576 } 577 for (index = 0; index < ext_cnt; index++) { 578 if (!strcasecmp(ext[index], noext[no_index])) { 579 f2fs_info(sbi, "Don't allow the same extension %s appear in both compress and nocompress extension", 580 ext[index]); 581 return -EINVAL; 582 } 583 } 584 } 585 return 0; 586 } 587 588 #ifdef CONFIG_F2FS_FS_LZ4 589 static int f2fs_set_lz4hc_level(struct f2fs_sb_info *sbi, const char *str) 590 { 591 #ifdef CONFIG_F2FS_FS_LZ4HC 592 unsigned int level; 593 #endif 594 595 if (strlen(str) == 3) { 596 F2FS_OPTION(sbi).compress_level = 0; 597 return 0; 598 } 599 600 #ifdef CONFIG_F2FS_FS_LZ4HC 601 str += 3; 602 603 if (str[0] != ':') { 604 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>"); 605 return -EINVAL; 606 } 607 if (kstrtouint(str + 1, 10, &level)) 608 return -EINVAL; 609 610 if (level < LZ4HC_MIN_CLEVEL || level > LZ4HC_MAX_CLEVEL) { 611 f2fs_info(sbi, "invalid lz4hc compress level: %d", level); 612 return -EINVAL; 613 } 614 615 F2FS_OPTION(sbi).compress_level = level; 616 return 0; 617 #else 618 f2fs_info(sbi, "kernel doesn't support lz4hc compression"); 619 return -EINVAL; 620 #endif 621 } 622 #endif 623 624 #ifdef CONFIG_F2FS_FS_ZSTD 625 static int f2fs_set_zstd_level(struct f2fs_sb_info *sbi, const char *str) 626 { 627 unsigned int level; 628 int len = 4; 629 630 if (strlen(str) == len) { 631 F2FS_OPTION(sbi).compress_level = 0; 632 return 0; 633 } 634 635 str += len; 636 637 if (str[0] != ':') { 638 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>"); 639 return -EINVAL; 640 } 641 if (kstrtouint(str + 1, 10, &level)) 642 return -EINVAL; 643 644 if (!level || level > zstd_max_clevel()) { 645 f2fs_info(sbi, "invalid zstd compress level: %d", level); 646 return -EINVAL; 647 } 648 649 F2FS_OPTION(sbi).compress_level = level; 650 return 0; 651 } 652 #endif 653 #endif 654 655 static int parse_options(struct super_block *sb, char *options, bool is_remount) 656 { 657 struct f2fs_sb_info *sbi = F2FS_SB(sb); 658 substring_t args[MAX_OPT_ARGS]; 659 #ifdef CONFIG_F2FS_FS_COMPRESSION 660 unsigned char (*ext)[F2FS_EXTENSION_LEN]; 661 unsigned char (*noext)[F2FS_EXTENSION_LEN]; 662 int ext_cnt, noext_cnt; 663 #endif 664 char *p, *name; 665 int arg = 0; 666 kuid_t uid; 667 kgid_t gid; 668 int ret; 669 670 if (!options) 671 goto default_check; 672 673 while ((p = strsep(&options, ",")) != NULL) { 674 int token; 675 676 if (!*p) 677 continue; 678 /* 679 * Initialize args struct so we know whether arg was 680 * found; some options take optional arguments. 681 */ 682 args[0].to = args[0].from = NULL; 683 token = match_token(p, f2fs_tokens, args); 684 685 switch (token) { 686 case Opt_gc_background: 687 name = match_strdup(&args[0]); 688 689 if (!name) 690 return -ENOMEM; 691 if (!strcmp(name, "on")) { 692 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON; 693 } else if (!strcmp(name, "off")) { 694 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_OFF; 695 } else if (!strcmp(name, "sync")) { 696 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_SYNC; 697 } else { 698 kfree(name); 699 return -EINVAL; 700 } 701 kfree(name); 702 break; 703 case Opt_disable_roll_forward: 704 set_opt(sbi, DISABLE_ROLL_FORWARD); 705 break; 706 case Opt_norecovery: 707 /* this option mounts f2fs with ro */ 708 set_opt(sbi, NORECOVERY); 709 if (!f2fs_readonly(sb)) 710 return -EINVAL; 711 break; 712 case Opt_discard: 713 if (!f2fs_hw_support_discard(sbi)) { 714 f2fs_warn(sbi, "device does not support discard"); 715 break; 716 } 717 set_opt(sbi, DISCARD); 718 break; 719 case Opt_nodiscard: 720 if (f2fs_hw_should_discard(sbi)) { 721 f2fs_warn(sbi, "discard is required for zoned block devices"); 722 return -EINVAL; 723 } 724 clear_opt(sbi, DISCARD); 725 break; 726 case Opt_noheap: 727 set_opt(sbi, NOHEAP); 728 break; 729 case Opt_heap: 730 clear_opt(sbi, NOHEAP); 731 break; 732 #ifdef CONFIG_F2FS_FS_XATTR 733 case Opt_user_xattr: 734 set_opt(sbi, XATTR_USER); 735 break; 736 case Opt_nouser_xattr: 737 clear_opt(sbi, XATTR_USER); 738 break; 739 case Opt_inline_xattr: 740 set_opt(sbi, INLINE_XATTR); 741 break; 742 case Opt_noinline_xattr: 743 clear_opt(sbi, INLINE_XATTR); 744 break; 745 case Opt_inline_xattr_size: 746 if (args->from && match_int(args, &arg)) 747 return -EINVAL; 748 set_opt(sbi, INLINE_XATTR_SIZE); 749 F2FS_OPTION(sbi).inline_xattr_size = arg; 750 break; 751 #else 752 case Opt_user_xattr: 753 f2fs_info(sbi, "user_xattr options not supported"); 754 break; 755 case Opt_nouser_xattr: 756 f2fs_info(sbi, "nouser_xattr options not supported"); 757 break; 758 case Opt_inline_xattr: 759 f2fs_info(sbi, "inline_xattr options not supported"); 760 break; 761 case Opt_noinline_xattr: 762 f2fs_info(sbi, "noinline_xattr options not supported"); 763 break; 764 #endif 765 #ifdef CONFIG_F2FS_FS_POSIX_ACL 766 case Opt_acl: 767 set_opt(sbi, POSIX_ACL); 768 break; 769 case Opt_noacl: 770 clear_opt(sbi, POSIX_ACL); 771 break; 772 #else 773 case Opt_acl: 774 f2fs_info(sbi, "acl options not supported"); 775 break; 776 case Opt_noacl: 777 f2fs_info(sbi, "noacl options not supported"); 778 break; 779 #endif 780 case Opt_active_logs: 781 if (args->from && match_int(args, &arg)) 782 return -EINVAL; 783 if (arg != 2 && arg != 4 && 784 arg != NR_CURSEG_PERSIST_TYPE) 785 return -EINVAL; 786 F2FS_OPTION(sbi).active_logs = arg; 787 break; 788 case Opt_disable_ext_identify: 789 set_opt(sbi, DISABLE_EXT_IDENTIFY); 790 break; 791 case Opt_inline_data: 792 set_opt(sbi, INLINE_DATA); 793 break; 794 case Opt_inline_dentry: 795 set_opt(sbi, INLINE_DENTRY); 796 break; 797 case Opt_noinline_dentry: 798 clear_opt(sbi, INLINE_DENTRY); 799 break; 800 case Opt_flush_merge: 801 set_opt(sbi, FLUSH_MERGE); 802 break; 803 case Opt_noflush_merge: 804 clear_opt(sbi, FLUSH_MERGE); 805 break; 806 case Opt_nobarrier: 807 set_opt(sbi, NOBARRIER); 808 break; 809 case Opt_fastboot: 810 set_opt(sbi, FASTBOOT); 811 break; 812 case Opt_extent_cache: 813 set_opt(sbi, EXTENT_CACHE); 814 break; 815 case Opt_noextent_cache: 816 clear_opt(sbi, EXTENT_CACHE); 817 break; 818 case Opt_noinline_data: 819 clear_opt(sbi, INLINE_DATA); 820 break; 821 case Opt_data_flush: 822 set_opt(sbi, DATA_FLUSH); 823 break; 824 case Opt_reserve_root: 825 if (args->from && match_int(args, &arg)) 826 return -EINVAL; 827 if (test_opt(sbi, RESERVE_ROOT)) { 828 f2fs_info(sbi, "Preserve previous reserve_root=%u", 829 F2FS_OPTION(sbi).root_reserved_blocks); 830 } else { 831 F2FS_OPTION(sbi).root_reserved_blocks = arg; 832 set_opt(sbi, RESERVE_ROOT); 833 } 834 break; 835 case Opt_resuid: 836 if (args->from && match_int(args, &arg)) 837 return -EINVAL; 838 uid = make_kuid(current_user_ns(), arg); 839 if (!uid_valid(uid)) { 840 f2fs_err(sbi, "Invalid uid value %d", arg); 841 return -EINVAL; 842 } 843 F2FS_OPTION(sbi).s_resuid = uid; 844 break; 845 case Opt_resgid: 846 if (args->from && match_int(args, &arg)) 847 return -EINVAL; 848 gid = make_kgid(current_user_ns(), arg); 849 if (!gid_valid(gid)) { 850 f2fs_err(sbi, "Invalid gid value %d", arg); 851 return -EINVAL; 852 } 853 F2FS_OPTION(sbi).s_resgid = gid; 854 break; 855 case Opt_mode: 856 name = match_strdup(&args[0]); 857 858 if (!name) 859 return -ENOMEM; 860 if (!strcmp(name, "adaptive")) { 861 if (f2fs_sb_has_blkzoned(sbi)) { 862 f2fs_warn(sbi, "adaptive mode is not allowed with zoned block device feature"); 863 kfree(name); 864 return -EINVAL; 865 } 866 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE; 867 } else if (!strcmp(name, "lfs")) { 868 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS; 869 } else if (!strcmp(name, "fragment:segment")) { 870 F2FS_OPTION(sbi).fs_mode = FS_MODE_FRAGMENT_SEG; 871 } else if (!strcmp(name, "fragment:block")) { 872 F2FS_OPTION(sbi).fs_mode = FS_MODE_FRAGMENT_BLK; 873 } else { 874 kfree(name); 875 return -EINVAL; 876 } 877 kfree(name); 878 break; 879 case Opt_io_size_bits: 880 if (args->from && match_int(args, &arg)) 881 return -EINVAL; 882 if (arg <= 0 || arg > __ilog2_u32(BIO_MAX_VECS)) { 883 f2fs_warn(sbi, "Not support %d, larger than %d", 884 1 << arg, BIO_MAX_VECS); 885 return -EINVAL; 886 } 887 F2FS_OPTION(sbi).write_io_size_bits = arg; 888 break; 889 #ifdef CONFIG_F2FS_FAULT_INJECTION 890 case Opt_fault_injection: 891 if (args->from && match_int(args, &arg)) 892 return -EINVAL; 893 f2fs_build_fault_attr(sbi, arg, F2FS_ALL_FAULT_TYPE); 894 set_opt(sbi, FAULT_INJECTION); 895 break; 896 897 case Opt_fault_type: 898 if (args->from && match_int(args, &arg)) 899 return -EINVAL; 900 f2fs_build_fault_attr(sbi, 0, arg); 901 set_opt(sbi, FAULT_INJECTION); 902 break; 903 #else 904 case Opt_fault_injection: 905 f2fs_info(sbi, "fault_injection options not supported"); 906 break; 907 908 case Opt_fault_type: 909 f2fs_info(sbi, "fault_type options not supported"); 910 break; 911 #endif 912 case Opt_lazytime: 913 sb->s_flags |= SB_LAZYTIME; 914 break; 915 case Opt_nolazytime: 916 sb->s_flags &= ~SB_LAZYTIME; 917 break; 918 #ifdef CONFIG_QUOTA 919 case Opt_quota: 920 case Opt_usrquota: 921 set_opt(sbi, USRQUOTA); 922 break; 923 case Opt_grpquota: 924 set_opt(sbi, GRPQUOTA); 925 break; 926 case Opt_prjquota: 927 set_opt(sbi, PRJQUOTA); 928 break; 929 case Opt_usrjquota: 930 ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]); 931 if (ret) 932 return ret; 933 break; 934 case Opt_grpjquota: 935 ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]); 936 if (ret) 937 return ret; 938 break; 939 case Opt_prjjquota: 940 ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]); 941 if (ret) 942 return ret; 943 break; 944 case Opt_offusrjquota: 945 ret = f2fs_clear_qf_name(sb, USRQUOTA); 946 if (ret) 947 return ret; 948 break; 949 case Opt_offgrpjquota: 950 ret = f2fs_clear_qf_name(sb, GRPQUOTA); 951 if (ret) 952 return ret; 953 break; 954 case Opt_offprjjquota: 955 ret = f2fs_clear_qf_name(sb, PRJQUOTA); 956 if (ret) 957 return ret; 958 break; 959 case Opt_jqfmt_vfsold: 960 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD; 961 break; 962 case Opt_jqfmt_vfsv0: 963 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0; 964 break; 965 case Opt_jqfmt_vfsv1: 966 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1; 967 break; 968 case Opt_noquota: 969 clear_opt(sbi, QUOTA); 970 clear_opt(sbi, USRQUOTA); 971 clear_opt(sbi, GRPQUOTA); 972 clear_opt(sbi, PRJQUOTA); 973 break; 974 #else 975 case Opt_quota: 976 case Opt_usrquota: 977 case Opt_grpquota: 978 case Opt_prjquota: 979 case Opt_usrjquota: 980 case Opt_grpjquota: 981 case Opt_prjjquota: 982 case Opt_offusrjquota: 983 case Opt_offgrpjquota: 984 case Opt_offprjjquota: 985 case Opt_jqfmt_vfsold: 986 case Opt_jqfmt_vfsv0: 987 case Opt_jqfmt_vfsv1: 988 case Opt_noquota: 989 f2fs_info(sbi, "quota operations not supported"); 990 break; 991 #endif 992 case Opt_alloc: 993 name = match_strdup(&args[0]); 994 if (!name) 995 return -ENOMEM; 996 997 if (!strcmp(name, "default")) { 998 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT; 999 } else if (!strcmp(name, "reuse")) { 1000 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE; 1001 } else { 1002 kfree(name); 1003 return -EINVAL; 1004 } 1005 kfree(name); 1006 break; 1007 case Opt_fsync: 1008 name = match_strdup(&args[0]); 1009 if (!name) 1010 return -ENOMEM; 1011 if (!strcmp(name, "posix")) { 1012 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX; 1013 } else if (!strcmp(name, "strict")) { 1014 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT; 1015 } else if (!strcmp(name, "nobarrier")) { 1016 F2FS_OPTION(sbi).fsync_mode = 1017 FSYNC_MODE_NOBARRIER; 1018 } else { 1019 kfree(name); 1020 return -EINVAL; 1021 } 1022 kfree(name); 1023 break; 1024 case Opt_test_dummy_encryption: 1025 ret = f2fs_set_test_dummy_encryption(sb, p, &args[0], 1026 is_remount); 1027 if (ret) 1028 return ret; 1029 break; 1030 case Opt_inlinecrypt: 1031 #ifdef CONFIG_FS_ENCRYPTION_INLINE_CRYPT 1032 sb->s_flags |= SB_INLINECRYPT; 1033 #else 1034 f2fs_info(sbi, "inline encryption not supported"); 1035 #endif 1036 break; 1037 case Opt_checkpoint_disable_cap_perc: 1038 if (args->from && match_int(args, &arg)) 1039 return -EINVAL; 1040 if (arg < 0 || arg > 100) 1041 return -EINVAL; 1042 F2FS_OPTION(sbi).unusable_cap_perc = arg; 1043 set_opt(sbi, DISABLE_CHECKPOINT); 1044 break; 1045 case Opt_checkpoint_disable_cap: 1046 if (args->from && match_int(args, &arg)) 1047 return -EINVAL; 1048 F2FS_OPTION(sbi).unusable_cap = arg; 1049 set_opt(sbi, DISABLE_CHECKPOINT); 1050 break; 1051 case Opt_checkpoint_disable: 1052 set_opt(sbi, DISABLE_CHECKPOINT); 1053 break; 1054 case Opt_checkpoint_enable: 1055 clear_opt(sbi, DISABLE_CHECKPOINT); 1056 break; 1057 case Opt_checkpoint_merge: 1058 set_opt(sbi, MERGE_CHECKPOINT); 1059 break; 1060 case Opt_nocheckpoint_merge: 1061 clear_opt(sbi, MERGE_CHECKPOINT); 1062 break; 1063 #ifdef CONFIG_F2FS_FS_COMPRESSION 1064 case Opt_compress_algorithm: 1065 if (!f2fs_sb_has_compression(sbi)) { 1066 f2fs_info(sbi, "Image doesn't support compression"); 1067 break; 1068 } 1069 name = match_strdup(&args[0]); 1070 if (!name) 1071 return -ENOMEM; 1072 if (!strcmp(name, "lzo")) { 1073 #ifdef CONFIG_F2FS_FS_LZO 1074 F2FS_OPTION(sbi).compress_level = 0; 1075 F2FS_OPTION(sbi).compress_algorithm = 1076 COMPRESS_LZO; 1077 #else 1078 f2fs_info(sbi, "kernel doesn't support lzo compression"); 1079 #endif 1080 } else if (!strncmp(name, "lz4", 3)) { 1081 #ifdef CONFIG_F2FS_FS_LZ4 1082 ret = f2fs_set_lz4hc_level(sbi, name); 1083 if (ret) { 1084 kfree(name); 1085 return -EINVAL; 1086 } 1087 F2FS_OPTION(sbi).compress_algorithm = 1088 COMPRESS_LZ4; 1089 #else 1090 f2fs_info(sbi, "kernel doesn't support lz4 compression"); 1091 #endif 1092 } else if (!strncmp(name, "zstd", 4)) { 1093 #ifdef CONFIG_F2FS_FS_ZSTD 1094 ret = f2fs_set_zstd_level(sbi, name); 1095 if (ret) { 1096 kfree(name); 1097 return -EINVAL; 1098 } 1099 F2FS_OPTION(sbi).compress_algorithm = 1100 COMPRESS_ZSTD; 1101 #else 1102 f2fs_info(sbi, "kernel doesn't support zstd compression"); 1103 #endif 1104 } else if (!strcmp(name, "lzo-rle")) { 1105 #ifdef CONFIG_F2FS_FS_LZORLE 1106 F2FS_OPTION(sbi).compress_level = 0; 1107 F2FS_OPTION(sbi).compress_algorithm = 1108 COMPRESS_LZORLE; 1109 #else 1110 f2fs_info(sbi, "kernel doesn't support lzorle compression"); 1111 #endif 1112 } else { 1113 kfree(name); 1114 return -EINVAL; 1115 } 1116 kfree(name); 1117 break; 1118 case Opt_compress_log_size: 1119 if (!f2fs_sb_has_compression(sbi)) { 1120 f2fs_info(sbi, "Image doesn't support compression"); 1121 break; 1122 } 1123 if (args->from && match_int(args, &arg)) 1124 return -EINVAL; 1125 if (arg < MIN_COMPRESS_LOG_SIZE || 1126 arg > MAX_COMPRESS_LOG_SIZE) { 1127 f2fs_err(sbi, 1128 "Compress cluster log size is out of range"); 1129 return -EINVAL; 1130 } 1131 F2FS_OPTION(sbi).compress_log_size = arg; 1132 break; 1133 case Opt_compress_extension: 1134 if (!f2fs_sb_has_compression(sbi)) { 1135 f2fs_info(sbi, "Image doesn't support compression"); 1136 break; 1137 } 1138 name = match_strdup(&args[0]); 1139 if (!name) 1140 return -ENOMEM; 1141 1142 ext = F2FS_OPTION(sbi).extensions; 1143 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt; 1144 1145 if (strlen(name) >= F2FS_EXTENSION_LEN || 1146 ext_cnt >= COMPRESS_EXT_NUM) { 1147 f2fs_err(sbi, 1148 "invalid extension length/number"); 1149 kfree(name); 1150 return -EINVAL; 1151 } 1152 1153 strcpy(ext[ext_cnt], name); 1154 F2FS_OPTION(sbi).compress_ext_cnt++; 1155 kfree(name); 1156 break; 1157 case Opt_nocompress_extension: 1158 if (!f2fs_sb_has_compression(sbi)) { 1159 f2fs_info(sbi, "Image doesn't support compression"); 1160 break; 1161 } 1162 name = match_strdup(&args[0]); 1163 if (!name) 1164 return -ENOMEM; 1165 1166 noext = F2FS_OPTION(sbi).noextensions; 1167 noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt; 1168 1169 if (strlen(name) >= F2FS_EXTENSION_LEN || 1170 noext_cnt >= COMPRESS_EXT_NUM) { 1171 f2fs_err(sbi, 1172 "invalid extension length/number"); 1173 kfree(name); 1174 return -EINVAL; 1175 } 1176 1177 strcpy(noext[noext_cnt], name); 1178 F2FS_OPTION(sbi).nocompress_ext_cnt++; 1179 kfree(name); 1180 break; 1181 case Opt_compress_chksum: 1182 F2FS_OPTION(sbi).compress_chksum = true; 1183 break; 1184 case Opt_compress_mode: 1185 name = match_strdup(&args[0]); 1186 if (!name) 1187 return -ENOMEM; 1188 if (!strcmp(name, "fs")) { 1189 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS; 1190 } else if (!strcmp(name, "user")) { 1191 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_USER; 1192 } else { 1193 kfree(name); 1194 return -EINVAL; 1195 } 1196 kfree(name); 1197 break; 1198 case Opt_compress_cache: 1199 set_opt(sbi, COMPRESS_CACHE); 1200 break; 1201 #else 1202 case Opt_compress_algorithm: 1203 case Opt_compress_log_size: 1204 case Opt_compress_extension: 1205 case Opt_nocompress_extension: 1206 case Opt_compress_chksum: 1207 case Opt_compress_mode: 1208 case Opt_compress_cache: 1209 f2fs_info(sbi, "compression options not supported"); 1210 break; 1211 #endif 1212 case Opt_atgc: 1213 set_opt(sbi, ATGC); 1214 break; 1215 case Opt_gc_merge: 1216 set_opt(sbi, GC_MERGE); 1217 break; 1218 case Opt_nogc_merge: 1219 clear_opt(sbi, GC_MERGE); 1220 break; 1221 case Opt_discard_unit: 1222 name = match_strdup(&args[0]); 1223 if (!name) 1224 return -ENOMEM; 1225 if (!strcmp(name, "block")) { 1226 F2FS_OPTION(sbi).discard_unit = 1227 DISCARD_UNIT_BLOCK; 1228 } else if (!strcmp(name, "segment")) { 1229 F2FS_OPTION(sbi).discard_unit = 1230 DISCARD_UNIT_SEGMENT; 1231 } else if (!strcmp(name, "section")) { 1232 F2FS_OPTION(sbi).discard_unit = 1233 DISCARD_UNIT_SECTION; 1234 } else { 1235 kfree(name); 1236 return -EINVAL; 1237 } 1238 kfree(name); 1239 break; 1240 case Opt_memory_mode: 1241 name = match_strdup(&args[0]); 1242 if (!name) 1243 return -ENOMEM; 1244 if (!strcmp(name, "normal")) { 1245 F2FS_OPTION(sbi).memory_mode = 1246 MEMORY_MODE_NORMAL; 1247 } else if (!strcmp(name, "low")) { 1248 F2FS_OPTION(sbi).memory_mode = 1249 MEMORY_MODE_LOW; 1250 } else { 1251 kfree(name); 1252 return -EINVAL; 1253 } 1254 kfree(name); 1255 break; 1256 default: 1257 f2fs_err(sbi, "Unrecognized mount option \"%s\" or missing value", 1258 p); 1259 return -EINVAL; 1260 } 1261 } 1262 default_check: 1263 #ifdef CONFIG_QUOTA 1264 if (f2fs_check_quota_options(sbi)) 1265 return -EINVAL; 1266 #else 1267 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sbi->sb)) { 1268 f2fs_info(sbi, "Filesystem with quota feature cannot be mounted RDWR without CONFIG_QUOTA"); 1269 return -EINVAL; 1270 } 1271 if (f2fs_sb_has_project_quota(sbi) && !f2fs_readonly(sbi->sb)) { 1272 f2fs_err(sbi, "Filesystem with project quota feature cannot be mounted RDWR without CONFIG_QUOTA"); 1273 return -EINVAL; 1274 } 1275 #endif 1276 #if !IS_ENABLED(CONFIG_UNICODE) 1277 if (f2fs_sb_has_casefold(sbi)) { 1278 f2fs_err(sbi, 1279 "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE"); 1280 return -EINVAL; 1281 } 1282 #endif 1283 /* 1284 * The BLKZONED feature indicates that the drive was formatted with 1285 * zone alignment optimization. This is optional for host-aware 1286 * devices, but mandatory for host-managed zoned block devices. 1287 */ 1288 #ifndef CONFIG_BLK_DEV_ZONED 1289 if (f2fs_sb_has_blkzoned(sbi)) { 1290 f2fs_err(sbi, "Zoned block device support is not enabled"); 1291 return -EINVAL; 1292 } 1293 #endif 1294 if (f2fs_sb_has_blkzoned(sbi)) { 1295 if (F2FS_OPTION(sbi).discard_unit != 1296 DISCARD_UNIT_SECTION) { 1297 f2fs_info(sbi, "Zoned block device doesn't need small discard, set discard_unit=section by default"); 1298 F2FS_OPTION(sbi).discard_unit = 1299 DISCARD_UNIT_SECTION; 1300 } 1301 } 1302 1303 #ifdef CONFIG_F2FS_FS_COMPRESSION 1304 if (f2fs_test_compress_extension(sbi)) { 1305 f2fs_err(sbi, "invalid compress or nocompress extension"); 1306 return -EINVAL; 1307 } 1308 #endif 1309 1310 if (F2FS_IO_SIZE_BITS(sbi) && !f2fs_lfs_mode(sbi)) { 1311 f2fs_err(sbi, "Should set mode=lfs with %uKB-sized IO", 1312 F2FS_IO_SIZE_KB(sbi)); 1313 return -EINVAL; 1314 } 1315 1316 if (test_opt(sbi, INLINE_XATTR_SIZE)) { 1317 int min_size, max_size; 1318 1319 if (!f2fs_sb_has_extra_attr(sbi) || 1320 !f2fs_sb_has_flexible_inline_xattr(sbi)) { 1321 f2fs_err(sbi, "extra_attr or flexible_inline_xattr feature is off"); 1322 return -EINVAL; 1323 } 1324 if (!test_opt(sbi, INLINE_XATTR)) { 1325 f2fs_err(sbi, "inline_xattr_size option should be set with inline_xattr option"); 1326 return -EINVAL; 1327 } 1328 1329 min_size = sizeof(struct f2fs_xattr_header) / sizeof(__le32); 1330 max_size = MAX_INLINE_XATTR_SIZE; 1331 1332 if (F2FS_OPTION(sbi).inline_xattr_size < min_size || 1333 F2FS_OPTION(sbi).inline_xattr_size > max_size) { 1334 f2fs_err(sbi, "inline xattr size is out of range: %d ~ %d", 1335 min_size, max_size); 1336 return -EINVAL; 1337 } 1338 } 1339 1340 if (test_opt(sbi, DISABLE_CHECKPOINT) && f2fs_lfs_mode(sbi)) { 1341 f2fs_err(sbi, "LFS not compatible with checkpoint=disable"); 1342 return -EINVAL; 1343 } 1344 1345 if (test_opt(sbi, ATGC) && f2fs_lfs_mode(sbi)) { 1346 f2fs_err(sbi, "LFS not compatible with ATGC"); 1347 return -EINVAL; 1348 } 1349 1350 if (f2fs_sb_has_readonly(sbi) && !f2fs_readonly(sbi->sb)) { 1351 f2fs_err(sbi, "Allow to mount readonly mode only"); 1352 return -EROFS; 1353 } 1354 return 0; 1355 } 1356 1357 static struct inode *f2fs_alloc_inode(struct super_block *sb) 1358 { 1359 struct f2fs_inode_info *fi; 1360 1361 if (time_to_inject(F2FS_SB(sb), FAULT_SLAB_ALLOC)) { 1362 f2fs_show_injection_info(F2FS_SB(sb), FAULT_SLAB_ALLOC); 1363 return NULL; 1364 } 1365 1366 fi = alloc_inode_sb(sb, f2fs_inode_cachep, GFP_F2FS_ZERO); 1367 if (!fi) 1368 return NULL; 1369 1370 init_once((void *) fi); 1371 1372 /* Initialize f2fs-specific inode info */ 1373 atomic_set(&fi->dirty_pages, 0); 1374 atomic_set(&fi->i_compr_blocks, 0); 1375 init_f2fs_rwsem(&fi->i_sem); 1376 spin_lock_init(&fi->i_size_lock); 1377 INIT_LIST_HEAD(&fi->dirty_list); 1378 INIT_LIST_HEAD(&fi->gdirty_list); 1379 init_f2fs_rwsem(&fi->i_gc_rwsem[READ]); 1380 init_f2fs_rwsem(&fi->i_gc_rwsem[WRITE]); 1381 init_f2fs_rwsem(&fi->i_xattr_sem); 1382 1383 /* Will be used by directory only */ 1384 fi->i_dir_level = F2FS_SB(sb)->dir_level; 1385 1386 return &fi->vfs_inode; 1387 } 1388 1389 static int f2fs_drop_inode(struct inode *inode) 1390 { 1391 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1392 int ret; 1393 1394 /* 1395 * during filesystem shutdown, if checkpoint is disabled, 1396 * drop useless meta/node dirty pages. 1397 */ 1398 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) { 1399 if (inode->i_ino == F2FS_NODE_INO(sbi) || 1400 inode->i_ino == F2FS_META_INO(sbi)) { 1401 trace_f2fs_drop_inode(inode, 1); 1402 return 1; 1403 } 1404 } 1405 1406 /* 1407 * This is to avoid a deadlock condition like below. 1408 * writeback_single_inode(inode) 1409 * - f2fs_write_data_page 1410 * - f2fs_gc -> iput -> evict 1411 * - inode_wait_for_writeback(inode) 1412 */ 1413 if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) { 1414 if (!inode->i_nlink && !is_bad_inode(inode)) { 1415 /* to avoid evict_inode call simultaneously */ 1416 atomic_inc(&inode->i_count); 1417 spin_unlock(&inode->i_lock); 1418 1419 f2fs_abort_atomic_write(inode, true); 1420 1421 /* should remain fi->extent_tree for writepage */ 1422 f2fs_destroy_extent_node(inode); 1423 1424 sb_start_intwrite(inode->i_sb); 1425 f2fs_i_size_write(inode, 0); 1426 1427 f2fs_submit_merged_write_cond(F2FS_I_SB(inode), 1428 inode, NULL, 0, DATA); 1429 truncate_inode_pages_final(inode->i_mapping); 1430 1431 if (F2FS_HAS_BLOCKS(inode)) 1432 f2fs_truncate(inode); 1433 1434 sb_end_intwrite(inode->i_sb); 1435 1436 spin_lock(&inode->i_lock); 1437 atomic_dec(&inode->i_count); 1438 } 1439 trace_f2fs_drop_inode(inode, 0); 1440 return 0; 1441 } 1442 ret = generic_drop_inode(inode); 1443 if (!ret) 1444 ret = fscrypt_drop_inode(inode); 1445 trace_f2fs_drop_inode(inode, ret); 1446 return ret; 1447 } 1448 1449 int f2fs_inode_dirtied(struct inode *inode, bool sync) 1450 { 1451 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1452 int ret = 0; 1453 1454 spin_lock(&sbi->inode_lock[DIRTY_META]); 1455 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) { 1456 ret = 1; 1457 } else { 1458 set_inode_flag(inode, FI_DIRTY_INODE); 1459 stat_inc_dirty_inode(sbi, DIRTY_META); 1460 } 1461 if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) { 1462 list_add_tail(&F2FS_I(inode)->gdirty_list, 1463 &sbi->inode_list[DIRTY_META]); 1464 inc_page_count(sbi, F2FS_DIRTY_IMETA); 1465 } 1466 spin_unlock(&sbi->inode_lock[DIRTY_META]); 1467 return ret; 1468 } 1469 1470 void f2fs_inode_synced(struct inode *inode) 1471 { 1472 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1473 1474 spin_lock(&sbi->inode_lock[DIRTY_META]); 1475 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) { 1476 spin_unlock(&sbi->inode_lock[DIRTY_META]); 1477 return; 1478 } 1479 if (!list_empty(&F2FS_I(inode)->gdirty_list)) { 1480 list_del_init(&F2FS_I(inode)->gdirty_list); 1481 dec_page_count(sbi, F2FS_DIRTY_IMETA); 1482 } 1483 clear_inode_flag(inode, FI_DIRTY_INODE); 1484 clear_inode_flag(inode, FI_AUTO_RECOVER); 1485 stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META); 1486 spin_unlock(&sbi->inode_lock[DIRTY_META]); 1487 } 1488 1489 /* 1490 * f2fs_dirty_inode() is called from __mark_inode_dirty() 1491 * 1492 * We should call set_dirty_inode to write the dirty inode through write_inode. 1493 */ 1494 static void f2fs_dirty_inode(struct inode *inode, int flags) 1495 { 1496 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1497 1498 if (inode->i_ino == F2FS_NODE_INO(sbi) || 1499 inode->i_ino == F2FS_META_INO(sbi)) 1500 return; 1501 1502 if (is_inode_flag_set(inode, FI_AUTO_RECOVER)) 1503 clear_inode_flag(inode, FI_AUTO_RECOVER); 1504 1505 f2fs_inode_dirtied(inode, false); 1506 } 1507 1508 static void f2fs_free_inode(struct inode *inode) 1509 { 1510 fscrypt_free_inode(inode); 1511 kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode)); 1512 } 1513 1514 static void destroy_percpu_info(struct f2fs_sb_info *sbi) 1515 { 1516 percpu_counter_destroy(&sbi->total_valid_inode_count); 1517 percpu_counter_destroy(&sbi->rf_node_block_count); 1518 percpu_counter_destroy(&sbi->alloc_valid_block_count); 1519 } 1520 1521 static void destroy_device_list(struct f2fs_sb_info *sbi) 1522 { 1523 int i; 1524 1525 for (i = 0; i < sbi->s_ndevs; i++) { 1526 blkdev_put(FDEV(i).bdev, FMODE_EXCL); 1527 #ifdef CONFIG_BLK_DEV_ZONED 1528 kvfree(FDEV(i).blkz_seq); 1529 #endif 1530 } 1531 kvfree(sbi->devs); 1532 } 1533 1534 static void f2fs_put_super(struct super_block *sb) 1535 { 1536 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1537 int i; 1538 bool dropped; 1539 1540 /* unregister procfs/sysfs entries in advance to avoid race case */ 1541 f2fs_unregister_sysfs(sbi); 1542 1543 f2fs_quota_off_umount(sb); 1544 1545 /* prevent remaining shrinker jobs */ 1546 mutex_lock(&sbi->umount_mutex); 1547 1548 /* 1549 * flush all issued checkpoints and stop checkpoint issue thread. 1550 * after then, all checkpoints should be done by each process context. 1551 */ 1552 f2fs_stop_ckpt_thread(sbi); 1553 1554 /* 1555 * We don't need to do checkpoint when superblock is clean. 1556 * But, the previous checkpoint was not done by umount, it needs to do 1557 * clean checkpoint again. 1558 */ 1559 if ((is_sbi_flag_set(sbi, SBI_IS_DIRTY) || 1560 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))) { 1561 struct cp_control cpc = { 1562 .reason = CP_UMOUNT, 1563 }; 1564 f2fs_write_checkpoint(sbi, &cpc); 1565 } 1566 1567 /* be sure to wait for any on-going discard commands */ 1568 dropped = f2fs_issue_discard_timeout(sbi); 1569 1570 if ((f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) && 1571 !sbi->discard_blks && !dropped) { 1572 struct cp_control cpc = { 1573 .reason = CP_UMOUNT | CP_TRIMMED, 1574 }; 1575 f2fs_write_checkpoint(sbi, &cpc); 1576 } 1577 1578 /* 1579 * normally superblock is clean, so we need to release this. 1580 * In addition, EIO will skip do checkpoint, we need this as well. 1581 */ 1582 f2fs_release_ino_entry(sbi, true); 1583 1584 f2fs_leave_shrinker(sbi); 1585 mutex_unlock(&sbi->umount_mutex); 1586 1587 /* our cp_error case, we can wait for any writeback page */ 1588 f2fs_flush_merged_writes(sbi); 1589 1590 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA); 1591 1592 f2fs_bug_on(sbi, sbi->fsync_node_num); 1593 1594 f2fs_destroy_compress_inode(sbi); 1595 1596 iput(sbi->node_inode); 1597 sbi->node_inode = NULL; 1598 1599 iput(sbi->meta_inode); 1600 sbi->meta_inode = NULL; 1601 1602 /* 1603 * iput() can update stat information, if f2fs_write_checkpoint() 1604 * above failed with error. 1605 */ 1606 f2fs_destroy_stats(sbi); 1607 1608 /* destroy f2fs internal modules */ 1609 f2fs_destroy_node_manager(sbi); 1610 f2fs_destroy_segment_manager(sbi); 1611 1612 f2fs_destroy_post_read_wq(sbi); 1613 1614 kvfree(sbi->ckpt); 1615 1616 sb->s_fs_info = NULL; 1617 if (sbi->s_chksum_driver) 1618 crypto_free_shash(sbi->s_chksum_driver); 1619 kfree(sbi->raw_super); 1620 1621 destroy_device_list(sbi); 1622 f2fs_destroy_page_array_cache(sbi); 1623 f2fs_destroy_xattr_caches(sbi); 1624 mempool_destroy(sbi->write_io_dummy); 1625 #ifdef CONFIG_QUOTA 1626 for (i = 0; i < MAXQUOTAS; i++) 1627 kfree(F2FS_OPTION(sbi).s_qf_names[i]); 1628 #endif 1629 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy); 1630 destroy_percpu_info(sbi); 1631 f2fs_destroy_iostat(sbi); 1632 for (i = 0; i < NR_PAGE_TYPE; i++) 1633 kvfree(sbi->write_io[i]); 1634 #if IS_ENABLED(CONFIG_UNICODE) 1635 utf8_unload(sb->s_encoding); 1636 #endif 1637 kfree(sbi); 1638 } 1639 1640 int f2fs_sync_fs(struct super_block *sb, int sync) 1641 { 1642 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1643 int err = 0; 1644 1645 if (unlikely(f2fs_cp_error(sbi))) 1646 return 0; 1647 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) 1648 return 0; 1649 1650 trace_f2fs_sync_fs(sb, sync); 1651 1652 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 1653 return -EAGAIN; 1654 1655 if (sync) 1656 err = f2fs_issue_checkpoint(sbi); 1657 1658 return err; 1659 } 1660 1661 static int f2fs_freeze(struct super_block *sb) 1662 { 1663 if (f2fs_readonly(sb)) 1664 return 0; 1665 1666 /* IO error happened before */ 1667 if (unlikely(f2fs_cp_error(F2FS_SB(sb)))) 1668 return -EIO; 1669 1670 /* must be clean, since sync_filesystem() was already called */ 1671 if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY)) 1672 return -EINVAL; 1673 1674 /* Let's flush checkpoints and stop the thread. */ 1675 f2fs_flush_ckpt_thread(F2FS_SB(sb)); 1676 1677 /* to avoid deadlock on f2fs_evict_inode->SB_FREEZE_FS */ 1678 set_sbi_flag(F2FS_SB(sb), SBI_IS_FREEZING); 1679 return 0; 1680 } 1681 1682 static int f2fs_unfreeze(struct super_block *sb) 1683 { 1684 clear_sbi_flag(F2FS_SB(sb), SBI_IS_FREEZING); 1685 return 0; 1686 } 1687 1688 #ifdef CONFIG_QUOTA 1689 static int f2fs_statfs_project(struct super_block *sb, 1690 kprojid_t projid, struct kstatfs *buf) 1691 { 1692 struct kqid qid; 1693 struct dquot *dquot; 1694 u64 limit; 1695 u64 curblock; 1696 1697 qid = make_kqid_projid(projid); 1698 dquot = dqget(sb, qid); 1699 if (IS_ERR(dquot)) 1700 return PTR_ERR(dquot); 1701 spin_lock(&dquot->dq_dqb_lock); 1702 1703 limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit, 1704 dquot->dq_dqb.dqb_bhardlimit); 1705 if (limit) 1706 limit >>= sb->s_blocksize_bits; 1707 1708 if (limit && buf->f_blocks > limit) { 1709 curblock = (dquot->dq_dqb.dqb_curspace + 1710 dquot->dq_dqb.dqb_rsvspace) >> sb->s_blocksize_bits; 1711 buf->f_blocks = limit; 1712 buf->f_bfree = buf->f_bavail = 1713 (buf->f_blocks > curblock) ? 1714 (buf->f_blocks - curblock) : 0; 1715 } 1716 1717 limit = min_not_zero(dquot->dq_dqb.dqb_isoftlimit, 1718 dquot->dq_dqb.dqb_ihardlimit); 1719 1720 if (limit && buf->f_files > limit) { 1721 buf->f_files = limit; 1722 buf->f_ffree = 1723 (buf->f_files > dquot->dq_dqb.dqb_curinodes) ? 1724 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0; 1725 } 1726 1727 spin_unlock(&dquot->dq_dqb_lock); 1728 dqput(dquot); 1729 return 0; 1730 } 1731 #endif 1732 1733 static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf) 1734 { 1735 struct super_block *sb = dentry->d_sb; 1736 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1737 u64 id = huge_encode_dev(sb->s_bdev->bd_dev); 1738 block_t total_count, user_block_count, start_count; 1739 u64 avail_node_count; 1740 unsigned int total_valid_node_count; 1741 1742 total_count = le64_to_cpu(sbi->raw_super->block_count); 1743 start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr); 1744 buf->f_type = F2FS_SUPER_MAGIC; 1745 buf->f_bsize = sbi->blocksize; 1746 1747 buf->f_blocks = total_count - start_count; 1748 1749 spin_lock(&sbi->stat_lock); 1750 1751 user_block_count = sbi->user_block_count; 1752 total_valid_node_count = valid_node_count(sbi); 1753 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM; 1754 buf->f_bfree = user_block_count - valid_user_blocks(sbi) - 1755 sbi->current_reserved_blocks; 1756 1757 if (unlikely(buf->f_bfree <= sbi->unusable_block_count)) 1758 buf->f_bfree = 0; 1759 else 1760 buf->f_bfree -= sbi->unusable_block_count; 1761 spin_unlock(&sbi->stat_lock); 1762 1763 if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks) 1764 buf->f_bavail = buf->f_bfree - 1765 F2FS_OPTION(sbi).root_reserved_blocks; 1766 else 1767 buf->f_bavail = 0; 1768 1769 if (avail_node_count > user_block_count) { 1770 buf->f_files = user_block_count; 1771 buf->f_ffree = buf->f_bavail; 1772 } else { 1773 buf->f_files = avail_node_count; 1774 buf->f_ffree = min(avail_node_count - total_valid_node_count, 1775 buf->f_bavail); 1776 } 1777 1778 buf->f_namelen = F2FS_NAME_LEN; 1779 buf->f_fsid = u64_to_fsid(id); 1780 1781 #ifdef CONFIG_QUOTA 1782 if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) && 1783 sb_has_quota_limits_enabled(sb, PRJQUOTA)) { 1784 f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf); 1785 } 1786 #endif 1787 return 0; 1788 } 1789 1790 static inline void f2fs_show_quota_options(struct seq_file *seq, 1791 struct super_block *sb) 1792 { 1793 #ifdef CONFIG_QUOTA 1794 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1795 1796 if (F2FS_OPTION(sbi).s_jquota_fmt) { 1797 char *fmtname = ""; 1798 1799 switch (F2FS_OPTION(sbi).s_jquota_fmt) { 1800 case QFMT_VFS_OLD: 1801 fmtname = "vfsold"; 1802 break; 1803 case QFMT_VFS_V0: 1804 fmtname = "vfsv0"; 1805 break; 1806 case QFMT_VFS_V1: 1807 fmtname = "vfsv1"; 1808 break; 1809 } 1810 seq_printf(seq, ",jqfmt=%s", fmtname); 1811 } 1812 1813 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA]) 1814 seq_show_option(seq, "usrjquota", 1815 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]); 1816 1817 if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]) 1818 seq_show_option(seq, "grpjquota", 1819 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]); 1820 1821 if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) 1822 seq_show_option(seq, "prjjquota", 1823 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]); 1824 #endif 1825 } 1826 1827 #ifdef CONFIG_F2FS_FS_COMPRESSION 1828 static inline void f2fs_show_compress_options(struct seq_file *seq, 1829 struct super_block *sb) 1830 { 1831 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1832 char *algtype = ""; 1833 int i; 1834 1835 if (!f2fs_sb_has_compression(sbi)) 1836 return; 1837 1838 switch (F2FS_OPTION(sbi).compress_algorithm) { 1839 case COMPRESS_LZO: 1840 algtype = "lzo"; 1841 break; 1842 case COMPRESS_LZ4: 1843 algtype = "lz4"; 1844 break; 1845 case COMPRESS_ZSTD: 1846 algtype = "zstd"; 1847 break; 1848 case COMPRESS_LZORLE: 1849 algtype = "lzo-rle"; 1850 break; 1851 } 1852 seq_printf(seq, ",compress_algorithm=%s", algtype); 1853 1854 if (F2FS_OPTION(sbi).compress_level) 1855 seq_printf(seq, ":%d", F2FS_OPTION(sbi).compress_level); 1856 1857 seq_printf(seq, ",compress_log_size=%u", 1858 F2FS_OPTION(sbi).compress_log_size); 1859 1860 for (i = 0; i < F2FS_OPTION(sbi).compress_ext_cnt; i++) { 1861 seq_printf(seq, ",compress_extension=%s", 1862 F2FS_OPTION(sbi).extensions[i]); 1863 } 1864 1865 for (i = 0; i < F2FS_OPTION(sbi).nocompress_ext_cnt; i++) { 1866 seq_printf(seq, ",nocompress_extension=%s", 1867 F2FS_OPTION(sbi).noextensions[i]); 1868 } 1869 1870 if (F2FS_OPTION(sbi).compress_chksum) 1871 seq_puts(seq, ",compress_chksum"); 1872 1873 if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_FS) 1874 seq_printf(seq, ",compress_mode=%s", "fs"); 1875 else if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_USER) 1876 seq_printf(seq, ",compress_mode=%s", "user"); 1877 1878 if (test_opt(sbi, COMPRESS_CACHE)) 1879 seq_puts(seq, ",compress_cache"); 1880 } 1881 #endif 1882 1883 static int f2fs_show_options(struct seq_file *seq, struct dentry *root) 1884 { 1885 struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb); 1886 1887 if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_SYNC) 1888 seq_printf(seq, ",background_gc=%s", "sync"); 1889 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_ON) 1890 seq_printf(seq, ",background_gc=%s", "on"); 1891 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF) 1892 seq_printf(seq, ",background_gc=%s", "off"); 1893 1894 if (test_opt(sbi, GC_MERGE)) 1895 seq_puts(seq, ",gc_merge"); 1896 1897 if (test_opt(sbi, DISABLE_ROLL_FORWARD)) 1898 seq_puts(seq, ",disable_roll_forward"); 1899 if (test_opt(sbi, NORECOVERY)) 1900 seq_puts(seq, ",norecovery"); 1901 if (test_opt(sbi, DISCARD)) 1902 seq_puts(seq, ",discard"); 1903 else 1904 seq_puts(seq, ",nodiscard"); 1905 if (test_opt(sbi, NOHEAP)) 1906 seq_puts(seq, ",no_heap"); 1907 else 1908 seq_puts(seq, ",heap"); 1909 #ifdef CONFIG_F2FS_FS_XATTR 1910 if (test_opt(sbi, XATTR_USER)) 1911 seq_puts(seq, ",user_xattr"); 1912 else 1913 seq_puts(seq, ",nouser_xattr"); 1914 if (test_opt(sbi, INLINE_XATTR)) 1915 seq_puts(seq, ",inline_xattr"); 1916 else 1917 seq_puts(seq, ",noinline_xattr"); 1918 if (test_opt(sbi, INLINE_XATTR_SIZE)) 1919 seq_printf(seq, ",inline_xattr_size=%u", 1920 F2FS_OPTION(sbi).inline_xattr_size); 1921 #endif 1922 #ifdef CONFIG_F2FS_FS_POSIX_ACL 1923 if (test_opt(sbi, POSIX_ACL)) 1924 seq_puts(seq, ",acl"); 1925 else 1926 seq_puts(seq, ",noacl"); 1927 #endif 1928 if (test_opt(sbi, DISABLE_EXT_IDENTIFY)) 1929 seq_puts(seq, ",disable_ext_identify"); 1930 if (test_opt(sbi, INLINE_DATA)) 1931 seq_puts(seq, ",inline_data"); 1932 else 1933 seq_puts(seq, ",noinline_data"); 1934 if (test_opt(sbi, INLINE_DENTRY)) 1935 seq_puts(seq, ",inline_dentry"); 1936 else 1937 seq_puts(seq, ",noinline_dentry"); 1938 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE)) 1939 seq_puts(seq, ",flush_merge"); 1940 if (test_opt(sbi, NOBARRIER)) 1941 seq_puts(seq, ",nobarrier"); 1942 if (test_opt(sbi, FASTBOOT)) 1943 seq_puts(seq, ",fastboot"); 1944 if (test_opt(sbi, EXTENT_CACHE)) 1945 seq_puts(seq, ",extent_cache"); 1946 else 1947 seq_puts(seq, ",noextent_cache"); 1948 if (test_opt(sbi, DATA_FLUSH)) 1949 seq_puts(seq, ",data_flush"); 1950 1951 seq_puts(seq, ",mode="); 1952 if (F2FS_OPTION(sbi).fs_mode == FS_MODE_ADAPTIVE) 1953 seq_puts(seq, "adaptive"); 1954 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_LFS) 1955 seq_puts(seq, "lfs"); 1956 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_SEG) 1957 seq_puts(seq, "fragment:segment"); 1958 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_BLK) 1959 seq_puts(seq, "fragment:block"); 1960 seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs); 1961 if (test_opt(sbi, RESERVE_ROOT)) 1962 seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u", 1963 F2FS_OPTION(sbi).root_reserved_blocks, 1964 from_kuid_munged(&init_user_ns, 1965 F2FS_OPTION(sbi).s_resuid), 1966 from_kgid_munged(&init_user_ns, 1967 F2FS_OPTION(sbi).s_resgid)); 1968 if (F2FS_IO_SIZE_BITS(sbi)) 1969 seq_printf(seq, ",io_bits=%u", 1970 F2FS_OPTION(sbi).write_io_size_bits); 1971 #ifdef CONFIG_F2FS_FAULT_INJECTION 1972 if (test_opt(sbi, FAULT_INJECTION)) { 1973 seq_printf(seq, ",fault_injection=%u", 1974 F2FS_OPTION(sbi).fault_info.inject_rate); 1975 seq_printf(seq, ",fault_type=%u", 1976 F2FS_OPTION(sbi).fault_info.inject_type); 1977 } 1978 #endif 1979 #ifdef CONFIG_QUOTA 1980 if (test_opt(sbi, QUOTA)) 1981 seq_puts(seq, ",quota"); 1982 if (test_opt(sbi, USRQUOTA)) 1983 seq_puts(seq, ",usrquota"); 1984 if (test_opt(sbi, GRPQUOTA)) 1985 seq_puts(seq, ",grpquota"); 1986 if (test_opt(sbi, PRJQUOTA)) 1987 seq_puts(seq, ",prjquota"); 1988 #endif 1989 f2fs_show_quota_options(seq, sbi->sb); 1990 1991 fscrypt_show_test_dummy_encryption(seq, ',', sbi->sb); 1992 1993 if (sbi->sb->s_flags & SB_INLINECRYPT) 1994 seq_puts(seq, ",inlinecrypt"); 1995 1996 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT) 1997 seq_printf(seq, ",alloc_mode=%s", "default"); 1998 else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE) 1999 seq_printf(seq, ",alloc_mode=%s", "reuse"); 2000 2001 if (test_opt(sbi, DISABLE_CHECKPOINT)) 2002 seq_printf(seq, ",checkpoint=disable:%u", 2003 F2FS_OPTION(sbi).unusable_cap); 2004 if (test_opt(sbi, MERGE_CHECKPOINT)) 2005 seq_puts(seq, ",checkpoint_merge"); 2006 else 2007 seq_puts(seq, ",nocheckpoint_merge"); 2008 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX) 2009 seq_printf(seq, ",fsync_mode=%s", "posix"); 2010 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) 2011 seq_printf(seq, ",fsync_mode=%s", "strict"); 2012 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER) 2013 seq_printf(seq, ",fsync_mode=%s", "nobarrier"); 2014 2015 #ifdef CONFIG_F2FS_FS_COMPRESSION 2016 f2fs_show_compress_options(seq, sbi->sb); 2017 #endif 2018 2019 if (test_opt(sbi, ATGC)) 2020 seq_puts(seq, ",atgc"); 2021 2022 if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_BLOCK) 2023 seq_printf(seq, ",discard_unit=%s", "block"); 2024 else if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SEGMENT) 2025 seq_printf(seq, ",discard_unit=%s", "segment"); 2026 else if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SECTION) 2027 seq_printf(seq, ",discard_unit=%s", "section"); 2028 2029 if (F2FS_OPTION(sbi).memory_mode == MEMORY_MODE_NORMAL) 2030 seq_printf(seq, ",memory=%s", "normal"); 2031 else if (F2FS_OPTION(sbi).memory_mode == MEMORY_MODE_LOW) 2032 seq_printf(seq, ",memory=%s", "low"); 2033 2034 return 0; 2035 } 2036 2037 static void default_options(struct f2fs_sb_info *sbi) 2038 { 2039 /* init some FS parameters */ 2040 if (f2fs_sb_has_readonly(sbi)) 2041 F2FS_OPTION(sbi).active_logs = NR_CURSEG_RO_TYPE; 2042 else 2043 F2FS_OPTION(sbi).active_logs = NR_CURSEG_PERSIST_TYPE; 2044 2045 F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS; 2046 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT; 2047 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX; 2048 F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID); 2049 F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID); 2050 F2FS_OPTION(sbi).compress_algorithm = COMPRESS_LZ4; 2051 F2FS_OPTION(sbi).compress_log_size = MIN_COMPRESS_LOG_SIZE; 2052 F2FS_OPTION(sbi).compress_ext_cnt = 0; 2053 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS; 2054 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON; 2055 F2FS_OPTION(sbi).memory_mode = MEMORY_MODE_NORMAL; 2056 2057 sbi->sb->s_flags &= ~SB_INLINECRYPT; 2058 2059 set_opt(sbi, INLINE_XATTR); 2060 set_opt(sbi, INLINE_DATA); 2061 set_opt(sbi, INLINE_DENTRY); 2062 set_opt(sbi, EXTENT_CACHE); 2063 set_opt(sbi, NOHEAP); 2064 clear_opt(sbi, DISABLE_CHECKPOINT); 2065 set_opt(sbi, MERGE_CHECKPOINT); 2066 F2FS_OPTION(sbi).unusable_cap = 0; 2067 sbi->sb->s_flags |= SB_LAZYTIME; 2068 set_opt(sbi, FLUSH_MERGE); 2069 if (f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) 2070 set_opt(sbi, DISCARD); 2071 if (f2fs_sb_has_blkzoned(sbi)) { 2072 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS; 2073 F2FS_OPTION(sbi).discard_unit = DISCARD_UNIT_SECTION; 2074 } else { 2075 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE; 2076 F2FS_OPTION(sbi).discard_unit = DISCARD_UNIT_BLOCK; 2077 } 2078 2079 #ifdef CONFIG_F2FS_FS_XATTR 2080 set_opt(sbi, XATTR_USER); 2081 #endif 2082 #ifdef CONFIG_F2FS_FS_POSIX_ACL 2083 set_opt(sbi, POSIX_ACL); 2084 #endif 2085 2086 f2fs_build_fault_attr(sbi, 0, 0); 2087 } 2088 2089 #ifdef CONFIG_QUOTA 2090 static int f2fs_enable_quotas(struct super_block *sb); 2091 #endif 2092 2093 static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi) 2094 { 2095 unsigned int s_flags = sbi->sb->s_flags; 2096 struct cp_control cpc; 2097 unsigned int gc_mode = sbi->gc_mode; 2098 int err = 0; 2099 int ret; 2100 block_t unusable; 2101 2102 if (s_flags & SB_RDONLY) { 2103 f2fs_err(sbi, "checkpoint=disable on readonly fs"); 2104 return -EINVAL; 2105 } 2106 sbi->sb->s_flags |= SB_ACTIVE; 2107 2108 /* check if we need more GC first */ 2109 unusable = f2fs_get_unusable_blocks(sbi); 2110 if (!f2fs_disable_cp_again(sbi, unusable)) 2111 goto skip_gc; 2112 2113 f2fs_update_time(sbi, DISABLE_TIME); 2114 2115 sbi->gc_mode = GC_URGENT_HIGH; 2116 2117 while (!f2fs_time_over(sbi, DISABLE_TIME)) { 2118 struct f2fs_gc_control gc_control = { 2119 .victim_segno = NULL_SEGNO, 2120 .init_gc_type = FG_GC, 2121 .should_migrate_blocks = false, 2122 .err_gc_skipped = true, 2123 .nr_free_secs = 1 }; 2124 2125 f2fs_down_write(&sbi->gc_lock); 2126 err = f2fs_gc(sbi, &gc_control); 2127 if (err == -ENODATA) { 2128 err = 0; 2129 break; 2130 } 2131 if (err && err != -EAGAIN) 2132 break; 2133 } 2134 2135 ret = sync_filesystem(sbi->sb); 2136 if (ret || err) { 2137 err = ret ? ret : err; 2138 goto restore_flag; 2139 } 2140 2141 unusable = f2fs_get_unusable_blocks(sbi); 2142 if (f2fs_disable_cp_again(sbi, unusable)) { 2143 err = -EAGAIN; 2144 goto restore_flag; 2145 } 2146 2147 skip_gc: 2148 f2fs_down_write(&sbi->gc_lock); 2149 cpc.reason = CP_PAUSE; 2150 set_sbi_flag(sbi, SBI_CP_DISABLED); 2151 err = f2fs_write_checkpoint(sbi, &cpc); 2152 if (err) 2153 goto out_unlock; 2154 2155 spin_lock(&sbi->stat_lock); 2156 sbi->unusable_block_count = unusable; 2157 spin_unlock(&sbi->stat_lock); 2158 2159 out_unlock: 2160 f2fs_up_write(&sbi->gc_lock); 2161 restore_flag: 2162 sbi->gc_mode = gc_mode; 2163 sbi->sb->s_flags = s_flags; /* Restore SB_RDONLY status */ 2164 return err; 2165 } 2166 2167 static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi) 2168 { 2169 int retry = DEFAULT_RETRY_IO_COUNT; 2170 2171 /* we should flush all the data to keep data consistency */ 2172 do { 2173 sync_inodes_sb(sbi->sb); 2174 f2fs_io_schedule_timeout(DEFAULT_IO_TIMEOUT); 2175 } while (get_pages(sbi, F2FS_DIRTY_DATA) && retry--); 2176 2177 if (unlikely(retry < 0)) 2178 f2fs_warn(sbi, "checkpoint=enable has some unwritten data."); 2179 2180 f2fs_down_write(&sbi->gc_lock); 2181 f2fs_dirty_to_prefree(sbi); 2182 2183 clear_sbi_flag(sbi, SBI_CP_DISABLED); 2184 set_sbi_flag(sbi, SBI_IS_DIRTY); 2185 f2fs_up_write(&sbi->gc_lock); 2186 2187 f2fs_sync_fs(sbi->sb, 1); 2188 2189 /* Let's ensure there's no pending checkpoint anymore */ 2190 f2fs_flush_ckpt_thread(sbi); 2191 } 2192 2193 static int f2fs_remount(struct super_block *sb, int *flags, char *data) 2194 { 2195 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2196 struct f2fs_mount_info org_mount_opt; 2197 unsigned long old_sb_flags; 2198 int err; 2199 bool need_restart_gc = false, need_stop_gc = false; 2200 bool need_restart_ckpt = false, need_stop_ckpt = false; 2201 bool need_restart_flush = false, need_stop_flush = false; 2202 bool need_restart_discard = false, need_stop_discard = false; 2203 bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE); 2204 bool enable_checkpoint = !test_opt(sbi, DISABLE_CHECKPOINT); 2205 bool no_io_align = !F2FS_IO_ALIGNED(sbi); 2206 bool no_atgc = !test_opt(sbi, ATGC); 2207 bool no_discard = !test_opt(sbi, DISCARD); 2208 bool no_compress_cache = !test_opt(sbi, COMPRESS_CACHE); 2209 bool block_unit_discard = f2fs_block_unit_discard(sbi); 2210 struct discard_cmd_control *dcc; 2211 #ifdef CONFIG_QUOTA 2212 int i, j; 2213 #endif 2214 2215 /* 2216 * Save the old mount options in case we 2217 * need to restore them. 2218 */ 2219 org_mount_opt = sbi->mount_opt; 2220 old_sb_flags = sb->s_flags; 2221 2222 #ifdef CONFIG_QUOTA 2223 org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt; 2224 for (i = 0; i < MAXQUOTAS; i++) { 2225 if (F2FS_OPTION(sbi).s_qf_names[i]) { 2226 org_mount_opt.s_qf_names[i] = 2227 kstrdup(F2FS_OPTION(sbi).s_qf_names[i], 2228 GFP_KERNEL); 2229 if (!org_mount_opt.s_qf_names[i]) { 2230 for (j = 0; j < i; j++) 2231 kfree(org_mount_opt.s_qf_names[j]); 2232 return -ENOMEM; 2233 } 2234 } else { 2235 org_mount_opt.s_qf_names[i] = NULL; 2236 } 2237 } 2238 #endif 2239 2240 /* recover superblocks we couldn't write due to previous RO mount */ 2241 if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) { 2242 err = f2fs_commit_super(sbi, false); 2243 f2fs_info(sbi, "Try to recover all the superblocks, ret: %d", 2244 err); 2245 if (!err) 2246 clear_sbi_flag(sbi, SBI_NEED_SB_WRITE); 2247 } 2248 2249 default_options(sbi); 2250 2251 /* parse mount options */ 2252 err = parse_options(sb, data, true); 2253 if (err) 2254 goto restore_opts; 2255 2256 /* 2257 * Previous and new state of filesystem is RO, 2258 * so skip checking GC and FLUSH_MERGE conditions. 2259 */ 2260 if (f2fs_readonly(sb) && (*flags & SB_RDONLY)) 2261 goto skip; 2262 2263 if (f2fs_sb_has_readonly(sbi) && !(*flags & SB_RDONLY)) { 2264 err = -EROFS; 2265 goto restore_opts; 2266 } 2267 2268 #ifdef CONFIG_QUOTA 2269 if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) { 2270 err = dquot_suspend(sb, -1); 2271 if (err < 0) 2272 goto restore_opts; 2273 } else if (f2fs_readonly(sb) && !(*flags & SB_RDONLY)) { 2274 /* dquot_resume needs RW */ 2275 sb->s_flags &= ~SB_RDONLY; 2276 if (sb_any_quota_suspended(sb)) { 2277 dquot_resume(sb, -1); 2278 } else if (f2fs_sb_has_quota_ino(sbi)) { 2279 err = f2fs_enable_quotas(sb); 2280 if (err) 2281 goto restore_opts; 2282 } 2283 } 2284 #endif 2285 /* disallow enable atgc dynamically */ 2286 if (no_atgc == !!test_opt(sbi, ATGC)) { 2287 err = -EINVAL; 2288 f2fs_warn(sbi, "switch atgc option is not allowed"); 2289 goto restore_opts; 2290 } 2291 2292 /* disallow enable/disable extent_cache dynamically */ 2293 if (no_extent_cache == !!test_opt(sbi, EXTENT_CACHE)) { 2294 err = -EINVAL; 2295 f2fs_warn(sbi, "switch extent_cache option is not allowed"); 2296 goto restore_opts; 2297 } 2298 2299 if (no_io_align == !!F2FS_IO_ALIGNED(sbi)) { 2300 err = -EINVAL; 2301 f2fs_warn(sbi, "switch io_bits option is not allowed"); 2302 goto restore_opts; 2303 } 2304 2305 if (no_compress_cache == !!test_opt(sbi, COMPRESS_CACHE)) { 2306 err = -EINVAL; 2307 f2fs_warn(sbi, "switch compress_cache option is not allowed"); 2308 goto restore_opts; 2309 } 2310 2311 if (block_unit_discard != f2fs_block_unit_discard(sbi)) { 2312 err = -EINVAL; 2313 f2fs_warn(sbi, "switch discard_unit option is not allowed"); 2314 goto restore_opts; 2315 } 2316 2317 if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) { 2318 err = -EINVAL; 2319 f2fs_warn(sbi, "disabling checkpoint not compatible with read-only"); 2320 goto restore_opts; 2321 } 2322 2323 /* 2324 * We stop the GC thread if FS is mounted as RO 2325 * or if background_gc = off is passed in mount 2326 * option. Also sync the filesystem. 2327 */ 2328 if ((*flags & SB_RDONLY) || 2329 (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF && 2330 !test_opt(sbi, GC_MERGE))) { 2331 if (sbi->gc_thread) { 2332 f2fs_stop_gc_thread(sbi); 2333 need_restart_gc = true; 2334 } 2335 } else if (!sbi->gc_thread) { 2336 err = f2fs_start_gc_thread(sbi); 2337 if (err) 2338 goto restore_opts; 2339 need_stop_gc = true; 2340 } 2341 2342 if (*flags & SB_RDONLY) { 2343 sync_inodes_sb(sb); 2344 2345 set_sbi_flag(sbi, SBI_IS_DIRTY); 2346 set_sbi_flag(sbi, SBI_IS_CLOSE); 2347 f2fs_sync_fs(sb, 1); 2348 clear_sbi_flag(sbi, SBI_IS_CLOSE); 2349 } 2350 2351 if ((*flags & SB_RDONLY) || test_opt(sbi, DISABLE_CHECKPOINT) || 2352 !test_opt(sbi, MERGE_CHECKPOINT)) { 2353 f2fs_stop_ckpt_thread(sbi); 2354 need_restart_ckpt = true; 2355 } else { 2356 /* Flush if the prevous checkpoint, if exists. */ 2357 f2fs_flush_ckpt_thread(sbi); 2358 2359 err = f2fs_start_ckpt_thread(sbi); 2360 if (err) { 2361 f2fs_err(sbi, 2362 "Failed to start F2FS issue_checkpoint_thread (%d)", 2363 err); 2364 goto restore_gc; 2365 } 2366 need_stop_ckpt = true; 2367 } 2368 2369 /* 2370 * We stop issue flush thread if FS is mounted as RO 2371 * or if flush_merge is not passed in mount option. 2372 */ 2373 if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) { 2374 clear_opt(sbi, FLUSH_MERGE); 2375 f2fs_destroy_flush_cmd_control(sbi, false); 2376 need_restart_flush = true; 2377 } else { 2378 err = f2fs_create_flush_cmd_control(sbi); 2379 if (err) 2380 goto restore_ckpt; 2381 need_stop_flush = true; 2382 } 2383 2384 if (no_discard == !!test_opt(sbi, DISCARD)) { 2385 if (test_opt(sbi, DISCARD)) { 2386 err = f2fs_start_discard_thread(sbi); 2387 if (err) 2388 goto restore_flush; 2389 need_stop_discard = true; 2390 } else { 2391 dcc = SM_I(sbi)->dcc_info; 2392 f2fs_stop_discard_thread(sbi); 2393 if (atomic_read(&dcc->discard_cmd_cnt)) 2394 f2fs_issue_discard_timeout(sbi); 2395 need_restart_discard = true; 2396 } 2397 } 2398 2399 if (enable_checkpoint == !!test_opt(sbi, DISABLE_CHECKPOINT)) { 2400 if (test_opt(sbi, DISABLE_CHECKPOINT)) { 2401 err = f2fs_disable_checkpoint(sbi); 2402 if (err) 2403 goto restore_discard; 2404 } else { 2405 f2fs_enable_checkpoint(sbi); 2406 } 2407 } 2408 2409 skip: 2410 #ifdef CONFIG_QUOTA 2411 /* Release old quota file names */ 2412 for (i = 0; i < MAXQUOTAS; i++) 2413 kfree(org_mount_opt.s_qf_names[i]); 2414 #endif 2415 /* Update the POSIXACL Flag */ 2416 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) | 2417 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0); 2418 2419 limit_reserve_root(sbi); 2420 adjust_unusable_cap_perc(sbi); 2421 *flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME); 2422 return 0; 2423 restore_discard: 2424 if (need_restart_discard) { 2425 if (f2fs_start_discard_thread(sbi)) 2426 f2fs_warn(sbi, "discard has been stopped"); 2427 } else if (need_stop_discard) { 2428 f2fs_stop_discard_thread(sbi); 2429 } 2430 restore_flush: 2431 if (need_restart_flush) { 2432 if (f2fs_create_flush_cmd_control(sbi)) 2433 f2fs_warn(sbi, "background flush thread has stopped"); 2434 } else if (need_stop_flush) { 2435 clear_opt(sbi, FLUSH_MERGE); 2436 f2fs_destroy_flush_cmd_control(sbi, false); 2437 } 2438 restore_ckpt: 2439 if (need_restart_ckpt) { 2440 if (f2fs_start_ckpt_thread(sbi)) 2441 f2fs_warn(sbi, "background ckpt thread has stopped"); 2442 } else if (need_stop_ckpt) { 2443 f2fs_stop_ckpt_thread(sbi); 2444 } 2445 restore_gc: 2446 if (need_restart_gc) { 2447 if (f2fs_start_gc_thread(sbi)) 2448 f2fs_warn(sbi, "background gc thread has stopped"); 2449 } else if (need_stop_gc) { 2450 f2fs_stop_gc_thread(sbi); 2451 } 2452 restore_opts: 2453 #ifdef CONFIG_QUOTA 2454 F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt; 2455 for (i = 0; i < MAXQUOTAS; i++) { 2456 kfree(F2FS_OPTION(sbi).s_qf_names[i]); 2457 F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i]; 2458 } 2459 #endif 2460 sbi->mount_opt = org_mount_opt; 2461 sb->s_flags = old_sb_flags; 2462 return err; 2463 } 2464 2465 #ifdef CONFIG_QUOTA 2466 /* Read data from quotafile */ 2467 static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data, 2468 size_t len, loff_t off) 2469 { 2470 struct inode *inode = sb_dqopt(sb)->files[type]; 2471 struct address_space *mapping = inode->i_mapping; 2472 block_t blkidx = F2FS_BYTES_TO_BLK(off); 2473 int offset = off & (sb->s_blocksize - 1); 2474 int tocopy; 2475 size_t toread; 2476 loff_t i_size = i_size_read(inode); 2477 struct page *page; 2478 2479 if (off > i_size) 2480 return 0; 2481 2482 if (off + len > i_size) 2483 len = i_size - off; 2484 toread = len; 2485 while (toread > 0) { 2486 tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread); 2487 repeat: 2488 page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS); 2489 if (IS_ERR(page)) { 2490 if (PTR_ERR(page) == -ENOMEM) { 2491 memalloc_retry_wait(GFP_NOFS); 2492 goto repeat; 2493 } 2494 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2495 return PTR_ERR(page); 2496 } 2497 2498 lock_page(page); 2499 2500 if (unlikely(page->mapping != mapping)) { 2501 f2fs_put_page(page, 1); 2502 goto repeat; 2503 } 2504 if (unlikely(!PageUptodate(page))) { 2505 f2fs_put_page(page, 1); 2506 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2507 return -EIO; 2508 } 2509 2510 memcpy_from_page(data, page, offset, tocopy); 2511 f2fs_put_page(page, 1); 2512 2513 offset = 0; 2514 toread -= tocopy; 2515 data += tocopy; 2516 blkidx++; 2517 } 2518 return len; 2519 } 2520 2521 /* Write to quotafile */ 2522 static ssize_t f2fs_quota_write(struct super_block *sb, int type, 2523 const char *data, size_t len, loff_t off) 2524 { 2525 struct inode *inode = sb_dqopt(sb)->files[type]; 2526 struct address_space *mapping = inode->i_mapping; 2527 const struct address_space_operations *a_ops = mapping->a_ops; 2528 int offset = off & (sb->s_blocksize - 1); 2529 size_t towrite = len; 2530 struct page *page; 2531 void *fsdata = NULL; 2532 int err = 0; 2533 int tocopy; 2534 2535 while (towrite > 0) { 2536 tocopy = min_t(unsigned long, sb->s_blocksize - offset, 2537 towrite); 2538 retry: 2539 err = a_ops->write_begin(NULL, mapping, off, tocopy, 2540 &page, &fsdata); 2541 if (unlikely(err)) { 2542 if (err == -ENOMEM) { 2543 f2fs_io_schedule_timeout(DEFAULT_IO_TIMEOUT); 2544 goto retry; 2545 } 2546 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2547 break; 2548 } 2549 2550 memcpy_to_page(page, offset, data, tocopy); 2551 2552 a_ops->write_end(NULL, mapping, off, tocopy, tocopy, 2553 page, fsdata); 2554 offset = 0; 2555 towrite -= tocopy; 2556 off += tocopy; 2557 data += tocopy; 2558 cond_resched(); 2559 } 2560 2561 if (len == towrite) 2562 return err; 2563 inode->i_mtime = inode->i_ctime = current_time(inode); 2564 f2fs_mark_inode_dirty_sync(inode, false); 2565 return len - towrite; 2566 } 2567 2568 int f2fs_dquot_initialize(struct inode *inode) 2569 { 2570 if (time_to_inject(F2FS_I_SB(inode), FAULT_DQUOT_INIT)) { 2571 f2fs_show_injection_info(F2FS_I_SB(inode), FAULT_DQUOT_INIT); 2572 return -ESRCH; 2573 } 2574 2575 return dquot_initialize(inode); 2576 } 2577 2578 static struct dquot **f2fs_get_dquots(struct inode *inode) 2579 { 2580 return F2FS_I(inode)->i_dquot; 2581 } 2582 2583 static qsize_t *f2fs_get_reserved_space(struct inode *inode) 2584 { 2585 return &F2FS_I(inode)->i_reserved_quota; 2586 } 2587 2588 static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type) 2589 { 2590 if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) { 2591 f2fs_err(sbi, "quota sysfile may be corrupted, skip loading it"); 2592 return 0; 2593 } 2594 2595 return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type], 2596 F2FS_OPTION(sbi).s_jquota_fmt, type); 2597 } 2598 2599 int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly) 2600 { 2601 int enabled = 0; 2602 int i, err; 2603 2604 if (f2fs_sb_has_quota_ino(sbi) && rdonly) { 2605 err = f2fs_enable_quotas(sbi->sb); 2606 if (err) { 2607 f2fs_err(sbi, "Cannot turn on quota_ino: %d", err); 2608 return 0; 2609 } 2610 return 1; 2611 } 2612 2613 for (i = 0; i < MAXQUOTAS; i++) { 2614 if (F2FS_OPTION(sbi).s_qf_names[i]) { 2615 err = f2fs_quota_on_mount(sbi, i); 2616 if (!err) { 2617 enabled = 1; 2618 continue; 2619 } 2620 f2fs_err(sbi, "Cannot turn on quotas: %d on %d", 2621 err, i); 2622 } 2623 } 2624 return enabled; 2625 } 2626 2627 static int f2fs_quota_enable(struct super_block *sb, int type, int format_id, 2628 unsigned int flags) 2629 { 2630 struct inode *qf_inode; 2631 unsigned long qf_inum; 2632 int err; 2633 2634 BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb))); 2635 2636 qf_inum = f2fs_qf_ino(sb, type); 2637 if (!qf_inum) 2638 return -EPERM; 2639 2640 qf_inode = f2fs_iget(sb, qf_inum); 2641 if (IS_ERR(qf_inode)) { 2642 f2fs_err(F2FS_SB(sb), "Bad quota inode %u:%lu", type, qf_inum); 2643 return PTR_ERR(qf_inode); 2644 } 2645 2646 /* Don't account quota for quota files to avoid recursion */ 2647 qf_inode->i_flags |= S_NOQUOTA; 2648 err = dquot_load_quota_inode(qf_inode, type, format_id, flags); 2649 iput(qf_inode); 2650 return err; 2651 } 2652 2653 static int f2fs_enable_quotas(struct super_block *sb) 2654 { 2655 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2656 int type, err = 0; 2657 unsigned long qf_inum; 2658 bool quota_mopt[MAXQUOTAS] = { 2659 test_opt(sbi, USRQUOTA), 2660 test_opt(sbi, GRPQUOTA), 2661 test_opt(sbi, PRJQUOTA), 2662 }; 2663 2664 if (is_set_ckpt_flags(F2FS_SB(sb), CP_QUOTA_NEED_FSCK_FLAG)) { 2665 f2fs_err(sbi, "quota file may be corrupted, skip loading it"); 2666 return 0; 2667 } 2668 2669 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE; 2670 2671 for (type = 0; type < MAXQUOTAS; type++) { 2672 qf_inum = f2fs_qf_ino(sb, type); 2673 if (qf_inum) { 2674 err = f2fs_quota_enable(sb, type, QFMT_VFS_V1, 2675 DQUOT_USAGE_ENABLED | 2676 (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0)); 2677 if (err) { 2678 f2fs_err(sbi, "Failed to enable quota tracking (type=%d, err=%d). Please run fsck to fix.", 2679 type, err); 2680 for (type--; type >= 0; type--) 2681 dquot_quota_off(sb, type); 2682 set_sbi_flag(F2FS_SB(sb), 2683 SBI_QUOTA_NEED_REPAIR); 2684 return err; 2685 } 2686 } 2687 } 2688 return 0; 2689 } 2690 2691 static int f2fs_quota_sync_file(struct f2fs_sb_info *sbi, int type) 2692 { 2693 struct quota_info *dqopt = sb_dqopt(sbi->sb); 2694 struct address_space *mapping = dqopt->files[type]->i_mapping; 2695 int ret = 0; 2696 2697 ret = dquot_writeback_dquots(sbi->sb, type); 2698 if (ret) 2699 goto out; 2700 2701 ret = filemap_fdatawrite(mapping); 2702 if (ret) 2703 goto out; 2704 2705 /* if we are using journalled quota */ 2706 if (is_journalled_quota(sbi)) 2707 goto out; 2708 2709 ret = filemap_fdatawait(mapping); 2710 2711 truncate_inode_pages(&dqopt->files[type]->i_data, 0); 2712 out: 2713 if (ret) 2714 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2715 return ret; 2716 } 2717 2718 int f2fs_quota_sync(struct super_block *sb, int type) 2719 { 2720 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2721 struct quota_info *dqopt = sb_dqopt(sb); 2722 int cnt; 2723 int ret = 0; 2724 2725 /* 2726 * Now when everything is written we can discard the pagecache so 2727 * that userspace sees the changes. 2728 */ 2729 for (cnt = 0; cnt < MAXQUOTAS; cnt++) { 2730 2731 if (type != -1 && cnt != type) 2732 continue; 2733 2734 if (!sb_has_quota_active(sb, cnt)) 2735 continue; 2736 2737 if (!f2fs_sb_has_quota_ino(sbi)) 2738 inode_lock(dqopt->files[cnt]); 2739 2740 /* 2741 * do_quotactl 2742 * f2fs_quota_sync 2743 * f2fs_down_read(quota_sem) 2744 * dquot_writeback_dquots() 2745 * f2fs_dquot_commit 2746 * block_operation 2747 * f2fs_down_read(quota_sem) 2748 */ 2749 f2fs_lock_op(sbi); 2750 f2fs_down_read(&sbi->quota_sem); 2751 2752 ret = f2fs_quota_sync_file(sbi, cnt); 2753 2754 f2fs_up_read(&sbi->quota_sem); 2755 f2fs_unlock_op(sbi); 2756 2757 if (!f2fs_sb_has_quota_ino(sbi)) 2758 inode_unlock(dqopt->files[cnt]); 2759 2760 if (ret) 2761 break; 2762 } 2763 return ret; 2764 } 2765 2766 static int f2fs_quota_on(struct super_block *sb, int type, int format_id, 2767 const struct path *path) 2768 { 2769 struct inode *inode; 2770 int err; 2771 2772 /* if quota sysfile exists, deny enabling quota with specific file */ 2773 if (f2fs_sb_has_quota_ino(F2FS_SB(sb))) { 2774 f2fs_err(F2FS_SB(sb), "quota sysfile already exists"); 2775 return -EBUSY; 2776 } 2777 2778 err = f2fs_quota_sync(sb, type); 2779 if (err) 2780 return err; 2781 2782 err = dquot_quota_on(sb, type, format_id, path); 2783 if (err) 2784 return err; 2785 2786 inode = d_inode(path->dentry); 2787 2788 inode_lock(inode); 2789 F2FS_I(inode)->i_flags |= F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL; 2790 f2fs_set_inode_flags(inode); 2791 inode_unlock(inode); 2792 f2fs_mark_inode_dirty_sync(inode, false); 2793 2794 return 0; 2795 } 2796 2797 static int __f2fs_quota_off(struct super_block *sb, int type) 2798 { 2799 struct inode *inode = sb_dqopt(sb)->files[type]; 2800 int err; 2801 2802 if (!inode || !igrab(inode)) 2803 return dquot_quota_off(sb, type); 2804 2805 err = f2fs_quota_sync(sb, type); 2806 if (err) 2807 goto out_put; 2808 2809 err = dquot_quota_off(sb, type); 2810 if (err || f2fs_sb_has_quota_ino(F2FS_SB(sb))) 2811 goto out_put; 2812 2813 inode_lock(inode); 2814 F2FS_I(inode)->i_flags &= ~(F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL); 2815 f2fs_set_inode_flags(inode); 2816 inode_unlock(inode); 2817 f2fs_mark_inode_dirty_sync(inode, false); 2818 out_put: 2819 iput(inode); 2820 return err; 2821 } 2822 2823 static int f2fs_quota_off(struct super_block *sb, int type) 2824 { 2825 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2826 int err; 2827 2828 err = __f2fs_quota_off(sb, type); 2829 2830 /* 2831 * quotactl can shutdown journalled quota, result in inconsistence 2832 * between quota record and fs data by following updates, tag the 2833 * flag to let fsck be aware of it. 2834 */ 2835 if (is_journalled_quota(sbi)) 2836 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2837 return err; 2838 } 2839 2840 void f2fs_quota_off_umount(struct super_block *sb) 2841 { 2842 int type; 2843 int err; 2844 2845 for (type = 0; type < MAXQUOTAS; type++) { 2846 err = __f2fs_quota_off(sb, type); 2847 if (err) { 2848 int ret = dquot_quota_off(sb, type); 2849 2850 f2fs_err(F2FS_SB(sb), "Fail to turn off disk quota (type: %d, err: %d, ret:%d), Please run fsck to fix it.", 2851 type, err, ret); 2852 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2853 } 2854 } 2855 /* 2856 * In case of checkpoint=disable, we must flush quota blocks. 2857 * This can cause NULL exception for node_inode in end_io, since 2858 * put_super already dropped it. 2859 */ 2860 sync_filesystem(sb); 2861 } 2862 2863 static void f2fs_truncate_quota_inode_pages(struct super_block *sb) 2864 { 2865 struct quota_info *dqopt = sb_dqopt(sb); 2866 int type; 2867 2868 for (type = 0; type < MAXQUOTAS; type++) { 2869 if (!dqopt->files[type]) 2870 continue; 2871 f2fs_inode_synced(dqopt->files[type]); 2872 } 2873 } 2874 2875 static int f2fs_dquot_commit(struct dquot *dquot) 2876 { 2877 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb); 2878 int ret; 2879 2880 f2fs_down_read_nested(&sbi->quota_sem, SINGLE_DEPTH_NESTING); 2881 ret = dquot_commit(dquot); 2882 if (ret < 0) 2883 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2884 f2fs_up_read(&sbi->quota_sem); 2885 return ret; 2886 } 2887 2888 static int f2fs_dquot_acquire(struct dquot *dquot) 2889 { 2890 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb); 2891 int ret; 2892 2893 f2fs_down_read(&sbi->quota_sem); 2894 ret = dquot_acquire(dquot); 2895 if (ret < 0) 2896 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2897 f2fs_up_read(&sbi->quota_sem); 2898 return ret; 2899 } 2900 2901 static int f2fs_dquot_release(struct dquot *dquot) 2902 { 2903 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb); 2904 int ret = dquot_release(dquot); 2905 2906 if (ret < 0) 2907 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2908 return ret; 2909 } 2910 2911 static int f2fs_dquot_mark_dquot_dirty(struct dquot *dquot) 2912 { 2913 struct super_block *sb = dquot->dq_sb; 2914 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2915 int ret = dquot_mark_dquot_dirty(dquot); 2916 2917 /* if we are using journalled quota */ 2918 if (is_journalled_quota(sbi)) 2919 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH); 2920 2921 return ret; 2922 } 2923 2924 static int f2fs_dquot_commit_info(struct super_block *sb, int type) 2925 { 2926 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2927 int ret = dquot_commit_info(sb, type); 2928 2929 if (ret < 0) 2930 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2931 return ret; 2932 } 2933 2934 static int f2fs_get_projid(struct inode *inode, kprojid_t *projid) 2935 { 2936 *projid = F2FS_I(inode)->i_projid; 2937 return 0; 2938 } 2939 2940 static const struct dquot_operations f2fs_quota_operations = { 2941 .get_reserved_space = f2fs_get_reserved_space, 2942 .write_dquot = f2fs_dquot_commit, 2943 .acquire_dquot = f2fs_dquot_acquire, 2944 .release_dquot = f2fs_dquot_release, 2945 .mark_dirty = f2fs_dquot_mark_dquot_dirty, 2946 .write_info = f2fs_dquot_commit_info, 2947 .alloc_dquot = dquot_alloc, 2948 .destroy_dquot = dquot_destroy, 2949 .get_projid = f2fs_get_projid, 2950 .get_next_id = dquot_get_next_id, 2951 }; 2952 2953 static const struct quotactl_ops f2fs_quotactl_ops = { 2954 .quota_on = f2fs_quota_on, 2955 .quota_off = f2fs_quota_off, 2956 .quota_sync = f2fs_quota_sync, 2957 .get_state = dquot_get_state, 2958 .set_info = dquot_set_dqinfo, 2959 .get_dqblk = dquot_get_dqblk, 2960 .set_dqblk = dquot_set_dqblk, 2961 .get_nextdqblk = dquot_get_next_dqblk, 2962 }; 2963 #else 2964 int f2fs_dquot_initialize(struct inode *inode) 2965 { 2966 return 0; 2967 } 2968 2969 int f2fs_quota_sync(struct super_block *sb, int type) 2970 { 2971 return 0; 2972 } 2973 2974 void f2fs_quota_off_umount(struct super_block *sb) 2975 { 2976 } 2977 #endif 2978 2979 static const struct super_operations f2fs_sops = { 2980 .alloc_inode = f2fs_alloc_inode, 2981 .free_inode = f2fs_free_inode, 2982 .drop_inode = f2fs_drop_inode, 2983 .write_inode = f2fs_write_inode, 2984 .dirty_inode = f2fs_dirty_inode, 2985 .show_options = f2fs_show_options, 2986 #ifdef CONFIG_QUOTA 2987 .quota_read = f2fs_quota_read, 2988 .quota_write = f2fs_quota_write, 2989 .get_dquots = f2fs_get_dquots, 2990 #endif 2991 .evict_inode = f2fs_evict_inode, 2992 .put_super = f2fs_put_super, 2993 .sync_fs = f2fs_sync_fs, 2994 .freeze_fs = f2fs_freeze, 2995 .unfreeze_fs = f2fs_unfreeze, 2996 .statfs = f2fs_statfs, 2997 .remount_fs = f2fs_remount, 2998 }; 2999 3000 #ifdef CONFIG_FS_ENCRYPTION 3001 static int f2fs_get_context(struct inode *inode, void *ctx, size_t len) 3002 { 3003 return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION, 3004 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, 3005 ctx, len, NULL); 3006 } 3007 3008 static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len, 3009 void *fs_data) 3010 { 3011 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 3012 3013 /* 3014 * Encrypting the root directory is not allowed because fsck 3015 * expects lost+found directory to exist and remain unencrypted 3016 * if LOST_FOUND feature is enabled. 3017 * 3018 */ 3019 if (f2fs_sb_has_lost_found(sbi) && 3020 inode->i_ino == F2FS_ROOT_INO(sbi)) 3021 return -EPERM; 3022 3023 return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION, 3024 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, 3025 ctx, len, fs_data, XATTR_CREATE); 3026 } 3027 3028 static const union fscrypt_policy *f2fs_get_dummy_policy(struct super_block *sb) 3029 { 3030 return F2FS_OPTION(F2FS_SB(sb)).dummy_enc_policy.policy; 3031 } 3032 3033 static bool f2fs_has_stable_inodes(struct super_block *sb) 3034 { 3035 return true; 3036 } 3037 3038 static void f2fs_get_ino_and_lblk_bits(struct super_block *sb, 3039 int *ino_bits_ret, int *lblk_bits_ret) 3040 { 3041 *ino_bits_ret = 8 * sizeof(nid_t); 3042 *lblk_bits_ret = 8 * sizeof(block_t); 3043 } 3044 3045 static struct block_device **f2fs_get_devices(struct super_block *sb, 3046 unsigned int *num_devs) 3047 { 3048 struct f2fs_sb_info *sbi = F2FS_SB(sb); 3049 struct block_device **devs; 3050 int i; 3051 3052 if (!f2fs_is_multi_device(sbi)) 3053 return NULL; 3054 3055 devs = kmalloc_array(sbi->s_ndevs, sizeof(*devs), GFP_KERNEL); 3056 if (!devs) 3057 return ERR_PTR(-ENOMEM); 3058 3059 for (i = 0; i < sbi->s_ndevs; i++) 3060 devs[i] = FDEV(i).bdev; 3061 *num_devs = sbi->s_ndevs; 3062 return devs; 3063 } 3064 3065 static const struct fscrypt_operations f2fs_cryptops = { 3066 .key_prefix = "f2fs:", 3067 .get_context = f2fs_get_context, 3068 .set_context = f2fs_set_context, 3069 .get_dummy_policy = f2fs_get_dummy_policy, 3070 .empty_dir = f2fs_empty_dir, 3071 .has_stable_inodes = f2fs_has_stable_inodes, 3072 .get_ino_and_lblk_bits = f2fs_get_ino_and_lblk_bits, 3073 .get_devices = f2fs_get_devices, 3074 }; 3075 #endif 3076 3077 static struct inode *f2fs_nfs_get_inode(struct super_block *sb, 3078 u64 ino, u32 generation) 3079 { 3080 struct f2fs_sb_info *sbi = F2FS_SB(sb); 3081 struct inode *inode; 3082 3083 if (f2fs_check_nid_range(sbi, ino)) 3084 return ERR_PTR(-ESTALE); 3085 3086 /* 3087 * f2fs_iget isn't quite right if the inode is currently unallocated! 3088 * However f2fs_iget currently does appropriate checks to handle stale 3089 * inodes so everything is OK. 3090 */ 3091 inode = f2fs_iget(sb, ino); 3092 if (IS_ERR(inode)) 3093 return ERR_CAST(inode); 3094 if (unlikely(generation && inode->i_generation != generation)) { 3095 /* we didn't find the right inode.. */ 3096 iput(inode); 3097 return ERR_PTR(-ESTALE); 3098 } 3099 return inode; 3100 } 3101 3102 static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid, 3103 int fh_len, int fh_type) 3104 { 3105 return generic_fh_to_dentry(sb, fid, fh_len, fh_type, 3106 f2fs_nfs_get_inode); 3107 } 3108 3109 static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid, 3110 int fh_len, int fh_type) 3111 { 3112 return generic_fh_to_parent(sb, fid, fh_len, fh_type, 3113 f2fs_nfs_get_inode); 3114 } 3115 3116 static const struct export_operations f2fs_export_ops = { 3117 .fh_to_dentry = f2fs_fh_to_dentry, 3118 .fh_to_parent = f2fs_fh_to_parent, 3119 .get_parent = f2fs_get_parent, 3120 }; 3121 3122 loff_t max_file_blocks(struct inode *inode) 3123 { 3124 loff_t result = 0; 3125 loff_t leaf_count; 3126 3127 /* 3128 * note: previously, result is equal to (DEF_ADDRS_PER_INODE - 3129 * DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more 3130 * space in inode.i_addr, it will be more safe to reassign 3131 * result as zero. 3132 */ 3133 3134 if (inode && f2fs_compressed_file(inode)) 3135 leaf_count = ADDRS_PER_BLOCK(inode); 3136 else 3137 leaf_count = DEF_ADDRS_PER_BLOCK; 3138 3139 /* two direct node blocks */ 3140 result += (leaf_count * 2); 3141 3142 /* two indirect node blocks */ 3143 leaf_count *= NIDS_PER_BLOCK; 3144 result += (leaf_count * 2); 3145 3146 /* one double indirect node block */ 3147 leaf_count *= NIDS_PER_BLOCK; 3148 result += leaf_count; 3149 3150 return result; 3151 } 3152 3153 static int __f2fs_commit_super(struct buffer_head *bh, 3154 struct f2fs_super_block *super) 3155 { 3156 lock_buffer(bh); 3157 if (super) 3158 memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super)); 3159 set_buffer_dirty(bh); 3160 unlock_buffer(bh); 3161 3162 /* it's rare case, we can do fua all the time */ 3163 return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA); 3164 } 3165 3166 static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi, 3167 struct buffer_head *bh) 3168 { 3169 struct f2fs_super_block *raw_super = (struct f2fs_super_block *) 3170 (bh->b_data + F2FS_SUPER_OFFSET); 3171 struct super_block *sb = sbi->sb; 3172 u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr); 3173 u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr); 3174 u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr); 3175 u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr); 3176 u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr); 3177 u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr); 3178 u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt); 3179 u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit); 3180 u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat); 3181 u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa); 3182 u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main); 3183 u32 segment_count = le32_to_cpu(raw_super->segment_count); 3184 u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); 3185 u64 main_end_blkaddr = main_blkaddr + 3186 (segment_count_main << log_blocks_per_seg); 3187 u64 seg_end_blkaddr = segment0_blkaddr + 3188 (segment_count << log_blocks_per_seg); 3189 3190 if (segment0_blkaddr != cp_blkaddr) { 3191 f2fs_info(sbi, "Mismatch start address, segment0(%u) cp_blkaddr(%u)", 3192 segment0_blkaddr, cp_blkaddr); 3193 return true; 3194 } 3195 3196 if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) != 3197 sit_blkaddr) { 3198 f2fs_info(sbi, "Wrong CP boundary, start(%u) end(%u) blocks(%u)", 3199 cp_blkaddr, sit_blkaddr, 3200 segment_count_ckpt << log_blocks_per_seg); 3201 return true; 3202 } 3203 3204 if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) != 3205 nat_blkaddr) { 3206 f2fs_info(sbi, "Wrong SIT boundary, start(%u) end(%u) blocks(%u)", 3207 sit_blkaddr, nat_blkaddr, 3208 segment_count_sit << log_blocks_per_seg); 3209 return true; 3210 } 3211 3212 if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) != 3213 ssa_blkaddr) { 3214 f2fs_info(sbi, "Wrong NAT boundary, start(%u) end(%u) blocks(%u)", 3215 nat_blkaddr, ssa_blkaddr, 3216 segment_count_nat << log_blocks_per_seg); 3217 return true; 3218 } 3219 3220 if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) != 3221 main_blkaddr) { 3222 f2fs_info(sbi, "Wrong SSA boundary, start(%u) end(%u) blocks(%u)", 3223 ssa_blkaddr, main_blkaddr, 3224 segment_count_ssa << log_blocks_per_seg); 3225 return true; 3226 } 3227 3228 if (main_end_blkaddr > seg_end_blkaddr) { 3229 f2fs_info(sbi, "Wrong MAIN_AREA boundary, start(%u) end(%llu) block(%u)", 3230 main_blkaddr, seg_end_blkaddr, 3231 segment_count_main << log_blocks_per_seg); 3232 return true; 3233 } else if (main_end_blkaddr < seg_end_blkaddr) { 3234 int err = 0; 3235 char *res; 3236 3237 /* fix in-memory information all the time */ 3238 raw_super->segment_count = cpu_to_le32((main_end_blkaddr - 3239 segment0_blkaddr) >> log_blocks_per_seg); 3240 3241 if (f2fs_readonly(sb) || bdev_read_only(sb->s_bdev)) { 3242 set_sbi_flag(sbi, SBI_NEED_SB_WRITE); 3243 res = "internally"; 3244 } else { 3245 err = __f2fs_commit_super(bh, NULL); 3246 res = err ? "failed" : "done"; 3247 } 3248 f2fs_info(sbi, "Fix alignment : %s, start(%u) end(%llu) block(%u)", 3249 res, main_blkaddr, seg_end_blkaddr, 3250 segment_count_main << log_blocks_per_seg); 3251 if (err) 3252 return true; 3253 } 3254 return false; 3255 } 3256 3257 static int sanity_check_raw_super(struct f2fs_sb_info *sbi, 3258 struct buffer_head *bh) 3259 { 3260 block_t segment_count, segs_per_sec, secs_per_zone, segment_count_main; 3261 block_t total_sections, blocks_per_seg; 3262 struct f2fs_super_block *raw_super = (struct f2fs_super_block *) 3263 (bh->b_data + F2FS_SUPER_OFFSET); 3264 size_t crc_offset = 0; 3265 __u32 crc = 0; 3266 3267 if (le32_to_cpu(raw_super->magic) != F2FS_SUPER_MAGIC) { 3268 f2fs_info(sbi, "Magic Mismatch, valid(0x%x) - read(0x%x)", 3269 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic)); 3270 return -EINVAL; 3271 } 3272 3273 /* Check checksum_offset and crc in superblock */ 3274 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_SB_CHKSUM)) { 3275 crc_offset = le32_to_cpu(raw_super->checksum_offset); 3276 if (crc_offset != 3277 offsetof(struct f2fs_super_block, crc)) { 3278 f2fs_info(sbi, "Invalid SB checksum offset: %zu", 3279 crc_offset); 3280 return -EFSCORRUPTED; 3281 } 3282 crc = le32_to_cpu(raw_super->crc); 3283 if (!f2fs_crc_valid(sbi, crc, raw_super, crc_offset)) { 3284 f2fs_info(sbi, "Invalid SB checksum value: %u", crc); 3285 return -EFSCORRUPTED; 3286 } 3287 } 3288 3289 /* Currently, support only 4KB block size */ 3290 if (le32_to_cpu(raw_super->log_blocksize) != F2FS_BLKSIZE_BITS) { 3291 f2fs_info(sbi, "Invalid log_blocksize (%u), supports only %u", 3292 le32_to_cpu(raw_super->log_blocksize), 3293 F2FS_BLKSIZE_BITS); 3294 return -EFSCORRUPTED; 3295 } 3296 3297 /* check log blocks per segment */ 3298 if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) { 3299 f2fs_info(sbi, "Invalid log blocks per segment (%u)", 3300 le32_to_cpu(raw_super->log_blocks_per_seg)); 3301 return -EFSCORRUPTED; 3302 } 3303 3304 /* Currently, support 512/1024/2048/4096 bytes sector size */ 3305 if (le32_to_cpu(raw_super->log_sectorsize) > 3306 F2FS_MAX_LOG_SECTOR_SIZE || 3307 le32_to_cpu(raw_super->log_sectorsize) < 3308 F2FS_MIN_LOG_SECTOR_SIZE) { 3309 f2fs_info(sbi, "Invalid log sectorsize (%u)", 3310 le32_to_cpu(raw_super->log_sectorsize)); 3311 return -EFSCORRUPTED; 3312 } 3313 if (le32_to_cpu(raw_super->log_sectors_per_block) + 3314 le32_to_cpu(raw_super->log_sectorsize) != 3315 F2FS_MAX_LOG_SECTOR_SIZE) { 3316 f2fs_info(sbi, "Invalid log sectors per block(%u) log sectorsize(%u)", 3317 le32_to_cpu(raw_super->log_sectors_per_block), 3318 le32_to_cpu(raw_super->log_sectorsize)); 3319 return -EFSCORRUPTED; 3320 } 3321 3322 segment_count = le32_to_cpu(raw_super->segment_count); 3323 segment_count_main = le32_to_cpu(raw_super->segment_count_main); 3324 segs_per_sec = le32_to_cpu(raw_super->segs_per_sec); 3325 secs_per_zone = le32_to_cpu(raw_super->secs_per_zone); 3326 total_sections = le32_to_cpu(raw_super->section_count); 3327 3328 /* blocks_per_seg should be 512, given the above check */ 3329 blocks_per_seg = 1 << le32_to_cpu(raw_super->log_blocks_per_seg); 3330 3331 if (segment_count > F2FS_MAX_SEGMENT || 3332 segment_count < F2FS_MIN_SEGMENTS) { 3333 f2fs_info(sbi, "Invalid segment count (%u)", segment_count); 3334 return -EFSCORRUPTED; 3335 } 3336 3337 if (total_sections > segment_count_main || total_sections < 1 || 3338 segs_per_sec > segment_count || !segs_per_sec) { 3339 f2fs_info(sbi, "Invalid segment/section count (%u, %u x %u)", 3340 segment_count, total_sections, segs_per_sec); 3341 return -EFSCORRUPTED; 3342 } 3343 3344 if (segment_count_main != total_sections * segs_per_sec) { 3345 f2fs_info(sbi, "Invalid segment/section count (%u != %u * %u)", 3346 segment_count_main, total_sections, segs_per_sec); 3347 return -EFSCORRUPTED; 3348 } 3349 3350 if ((segment_count / segs_per_sec) < total_sections) { 3351 f2fs_info(sbi, "Small segment_count (%u < %u * %u)", 3352 segment_count, segs_per_sec, total_sections); 3353 return -EFSCORRUPTED; 3354 } 3355 3356 if (segment_count > (le64_to_cpu(raw_super->block_count) >> 9)) { 3357 f2fs_info(sbi, "Wrong segment_count / block_count (%u > %llu)", 3358 segment_count, le64_to_cpu(raw_super->block_count)); 3359 return -EFSCORRUPTED; 3360 } 3361 3362 if (RDEV(0).path[0]) { 3363 block_t dev_seg_count = le32_to_cpu(RDEV(0).total_segments); 3364 int i = 1; 3365 3366 while (i < MAX_DEVICES && RDEV(i).path[0]) { 3367 dev_seg_count += le32_to_cpu(RDEV(i).total_segments); 3368 i++; 3369 } 3370 if (segment_count != dev_seg_count) { 3371 f2fs_info(sbi, "Segment count (%u) mismatch with total segments from devices (%u)", 3372 segment_count, dev_seg_count); 3373 return -EFSCORRUPTED; 3374 } 3375 } else { 3376 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_BLKZONED) && 3377 !bdev_is_zoned(sbi->sb->s_bdev)) { 3378 f2fs_info(sbi, "Zoned block device path is missing"); 3379 return -EFSCORRUPTED; 3380 } 3381 } 3382 3383 if (secs_per_zone > total_sections || !secs_per_zone) { 3384 f2fs_info(sbi, "Wrong secs_per_zone / total_sections (%u, %u)", 3385 secs_per_zone, total_sections); 3386 return -EFSCORRUPTED; 3387 } 3388 if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION || 3389 raw_super->hot_ext_count > F2FS_MAX_EXTENSION || 3390 (le32_to_cpu(raw_super->extension_count) + 3391 raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) { 3392 f2fs_info(sbi, "Corrupted extension count (%u + %u > %u)", 3393 le32_to_cpu(raw_super->extension_count), 3394 raw_super->hot_ext_count, 3395 F2FS_MAX_EXTENSION); 3396 return -EFSCORRUPTED; 3397 } 3398 3399 if (le32_to_cpu(raw_super->cp_payload) >= 3400 (blocks_per_seg - F2FS_CP_PACKS - 3401 NR_CURSEG_PERSIST_TYPE)) { 3402 f2fs_info(sbi, "Insane cp_payload (%u >= %u)", 3403 le32_to_cpu(raw_super->cp_payload), 3404 blocks_per_seg - F2FS_CP_PACKS - 3405 NR_CURSEG_PERSIST_TYPE); 3406 return -EFSCORRUPTED; 3407 } 3408 3409 /* check reserved ino info */ 3410 if (le32_to_cpu(raw_super->node_ino) != 1 || 3411 le32_to_cpu(raw_super->meta_ino) != 2 || 3412 le32_to_cpu(raw_super->root_ino) != 3) { 3413 f2fs_info(sbi, "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)", 3414 le32_to_cpu(raw_super->node_ino), 3415 le32_to_cpu(raw_super->meta_ino), 3416 le32_to_cpu(raw_super->root_ino)); 3417 return -EFSCORRUPTED; 3418 } 3419 3420 /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */ 3421 if (sanity_check_area_boundary(sbi, bh)) 3422 return -EFSCORRUPTED; 3423 3424 return 0; 3425 } 3426 3427 int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi) 3428 { 3429 unsigned int total, fsmeta; 3430 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 3431 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 3432 unsigned int ovp_segments, reserved_segments; 3433 unsigned int main_segs, blocks_per_seg; 3434 unsigned int sit_segs, nat_segs; 3435 unsigned int sit_bitmap_size, nat_bitmap_size; 3436 unsigned int log_blocks_per_seg; 3437 unsigned int segment_count_main; 3438 unsigned int cp_pack_start_sum, cp_payload; 3439 block_t user_block_count, valid_user_blocks; 3440 block_t avail_node_count, valid_node_count; 3441 unsigned int nat_blocks, nat_bits_bytes, nat_bits_blocks; 3442 int i, j; 3443 3444 total = le32_to_cpu(raw_super->segment_count); 3445 fsmeta = le32_to_cpu(raw_super->segment_count_ckpt); 3446 sit_segs = le32_to_cpu(raw_super->segment_count_sit); 3447 fsmeta += sit_segs; 3448 nat_segs = le32_to_cpu(raw_super->segment_count_nat); 3449 fsmeta += nat_segs; 3450 fsmeta += le32_to_cpu(ckpt->rsvd_segment_count); 3451 fsmeta += le32_to_cpu(raw_super->segment_count_ssa); 3452 3453 if (unlikely(fsmeta >= total)) 3454 return 1; 3455 3456 ovp_segments = le32_to_cpu(ckpt->overprov_segment_count); 3457 reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count); 3458 3459 if (!f2fs_sb_has_readonly(sbi) && 3460 unlikely(fsmeta < F2FS_MIN_META_SEGMENTS || 3461 ovp_segments == 0 || reserved_segments == 0)) { 3462 f2fs_err(sbi, "Wrong layout: check mkfs.f2fs version"); 3463 return 1; 3464 } 3465 user_block_count = le64_to_cpu(ckpt->user_block_count); 3466 segment_count_main = le32_to_cpu(raw_super->segment_count_main) + 3467 (f2fs_sb_has_readonly(sbi) ? 1 : 0); 3468 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); 3469 if (!user_block_count || user_block_count >= 3470 segment_count_main << log_blocks_per_seg) { 3471 f2fs_err(sbi, "Wrong user_block_count: %u", 3472 user_block_count); 3473 return 1; 3474 } 3475 3476 valid_user_blocks = le64_to_cpu(ckpt->valid_block_count); 3477 if (valid_user_blocks > user_block_count) { 3478 f2fs_err(sbi, "Wrong valid_user_blocks: %u, user_block_count: %u", 3479 valid_user_blocks, user_block_count); 3480 return 1; 3481 } 3482 3483 valid_node_count = le32_to_cpu(ckpt->valid_node_count); 3484 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM; 3485 if (valid_node_count > avail_node_count) { 3486 f2fs_err(sbi, "Wrong valid_node_count: %u, avail_node_count: %u", 3487 valid_node_count, avail_node_count); 3488 return 1; 3489 } 3490 3491 main_segs = le32_to_cpu(raw_super->segment_count_main); 3492 blocks_per_seg = sbi->blocks_per_seg; 3493 3494 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { 3495 if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs || 3496 le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg) 3497 return 1; 3498 3499 if (f2fs_sb_has_readonly(sbi)) 3500 goto check_data; 3501 3502 for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) { 3503 if (le32_to_cpu(ckpt->cur_node_segno[i]) == 3504 le32_to_cpu(ckpt->cur_node_segno[j])) { 3505 f2fs_err(sbi, "Node segment (%u, %u) has the same segno: %u", 3506 i, j, 3507 le32_to_cpu(ckpt->cur_node_segno[i])); 3508 return 1; 3509 } 3510 } 3511 } 3512 check_data: 3513 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) { 3514 if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs || 3515 le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg) 3516 return 1; 3517 3518 if (f2fs_sb_has_readonly(sbi)) 3519 goto skip_cross; 3520 3521 for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) { 3522 if (le32_to_cpu(ckpt->cur_data_segno[i]) == 3523 le32_to_cpu(ckpt->cur_data_segno[j])) { 3524 f2fs_err(sbi, "Data segment (%u, %u) has the same segno: %u", 3525 i, j, 3526 le32_to_cpu(ckpt->cur_data_segno[i])); 3527 return 1; 3528 } 3529 } 3530 } 3531 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { 3532 for (j = 0; j < NR_CURSEG_DATA_TYPE; j++) { 3533 if (le32_to_cpu(ckpt->cur_node_segno[i]) == 3534 le32_to_cpu(ckpt->cur_data_segno[j])) { 3535 f2fs_err(sbi, "Node segment (%u) and Data segment (%u) has the same segno: %u", 3536 i, j, 3537 le32_to_cpu(ckpt->cur_node_segno[i])); 3538 return 1; 3539 } 3540 } 3541 } 3542 skip_cross: 3543 sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize); 3544 nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize); 3545 3546 if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 || 3547 nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) { 3548 f2fs_err(sbi, "Wrong bitmap size: sit: %u, nat:%u", 3549 sit_bitmap_size, nat_bitmap_size); 3550 return 1; 3551 } 3552 3553 cp_pack_start_sum = __start_sum_addr(sbi); 3554 cp_payload = __cp_payload(sbi); 3555 if (cp_pack_start_sum < cp_payload + 1 || 3556 cp_pack_start_sum > blocks_per_seg - 1 - 3557 NR_CURSEG_PERSIST_TYPE) { 3558 f2fs_err(sbi, "Wrong cp_pack_start_sum: %u", 3559 cp_pack_start_sum); 3560 return 1; 3561 } 3562 3563 if (__is_set_ckpt_flags(ckpt, CP_LARGE_NAT_BITMAP_FLAG) && 3564 le32_to_cpu(ckpt->checksum_offset) != CP_MIN_CHKSUM_OFFSET) { 3565 f2fs_warn(sbi, "using deprecated layout of large_nat_bitmap, " 3566 "please run fsck v1.13.0 or higher to repair, chksum_offset: %u, " 3567 "fixed with patch: \"f2fs-tools: relocate chksum_offset for large_nat_bitmap feature\"", 3568 le32_to_cpu(ckpt->checksum_offset)); 3569 return 1; 3570 } 3571 3572 nat_blocks = nat_segs << log_blocks_per_seg; 3573 nat_bits_bytes = nat_blocks / BITS_PER_BYTE; 3574 nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8); 3575 if (__is_set_ckpt_flags(ckpt, CP_NAT_BITS_FLAG) && 3576 (cp_payload + F2FS_CP_PACKS + 3577 NR_CURSEG_PERSIST_TYPE + nat_bits_blocks >= blocks_per_seg)) { 3578 f2fs_warn(sbi, "Insane cp_payload: %u, nat_bits_blocks: %u)", 3579 cp_payload, nat_bits_blocks); 3580 return 1; 3581 } 3582 3583 if (unlikely(f2fs_cp_error(sbi))) { 3584 f2fs_err(sbi, "A bug case: need to run fsck"); 3585 return 1; 3586 } 3587 return 0; 3588 } 3589 3590 static void init_sb_info(struct f2fs_sb_info *sbi) 3591 { 3592 struct f2fs_super_block *raw_super = sbi->raw_super; 3593 int i; 3594 3595 sbi->log_sectors_per_block = 3596 le32_to_cpu(raw_super->log_sectors_per_block); 3597 sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize); 3598 sbi->blocksize = 1 << sbi->log_blocksize; 3599 sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); 3600 sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg; 3601 sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec); 3602 sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone); 3603 sbi->total_sections = le32_to_cpu(raw_super->section_count); 3604 sbi->total_node_count = 3605 (le32_to_cpu(raw_super->segment_count_nat) / 2) 3606 * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK; 3607 F2FS_ROOT_INO(sbi) = le32_to_cpu(raw_super->root_ino); 3608 F2FS_NODE_INO(sbi) = le32_to_cpu(raw_super->node_ino); 3609 F2FS_META_INO(sbi) = le32_to_cpu(raw_super->meta_ino); 3610 sbi->cur_victim_sec = NULL_SECNO; 3611 sbi->gc_mode = GC_NORMAL; 3612 sbi->next_victim_seg[BG_GC] = NULL_SEGNO; 3613 sbi->next_victim_seg[FG_GC] = NULL_SEGNO; 3614 sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH; 3615 sbi->migration_granularity = sbi->segs_per_sec; 3616 sbi->seq_file_ra_mul = MIN_RA_MUL; 3617 sbi->max_fragment_chunk = DEF_FRAGMENT_SIZE; 3618 sbi->max_fragment_hole = DEF_FRAGMENT_SIZE; 3619 spin_lock_init(&sbi->gc_urgent_high_lock); 3620 atomic64_set(&sbi->current_atomic_write, 0); 3621 3622 sbi->dir_level = DEF_DIR_LEVEL; 3623 sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL; 3624 sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL; 3625 sbi->interval_time[DISCARD_TIME] = DEF_IDLE_INTERVAL; 3626 sbi->interval_time[GC_TIME] = DEF_IDLE_INTERVAL; 3627 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_INTERVAL; 3628 sbi->interval_time[UMOUNT_DISCARD_TIMEOUT] = 3629 DEF_UMOUNT_DISCARD_TIMEOUT; 3630 clear_sbi_flag(sbi, SBI_NEED_FSCK); 3631 3632 for (i = 0; i < NR_COUNT_TYPE; i++) 3633 atomic_set(&sbi->nr_pages[i], 0); 3634 3635 for (i = 0; i < META; i++) 3636 atomic_set(&sbi->wb_sync_req[i], 0); 3637 3638 INIT_LIST_HEAD(&sbi->s_list); 3639 mutex_init(&sbi->umount_mutex); 3640 init_f2fs_rwsem(&sbi->io_order_lock); 3641 spin_lock_init(&sbi->cp_lock); 3642 3643 sbi->dirty_device = 0; 3644 spin_lock_init(&sbi->dev_lock); 3645 3646 init_f2fs_rwsem(&sbi->sb_lock); 3647 init_f2fs_rwsem(&sbi->pin_sem); 3648 } 3649 3650 static int init_percpu_info(struct f2fs_sb_info *sbi) 3651 { 3652 int err; 3653 3654 err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL); 3655 if (err) 3656 return err; 3657 3658 err = percpu_counter_init(&sbi->rf_node_block_count, 0, GFP_KERNEL); 3659 if (err) 3660 goto err_valid_block; 3661 3662 err = percpu_counter_init(&sbi->total_valid_inode_count, 0, 3663 GFP_KERNEL); 3664 if (err) 3665 goto err_node_block; 3666 return 0; 3667 3668 err_node_block: 3669 percpu_counter_destroy(&sbi->rf_node_block_count); 3670 err_valid_block: 3671 percpu_counter_destroy(&sbi->alloc_valid_block_count); 3672 return err; 3673 } 3674 3675 #ifdef CONFIG_BLK_DEV_ZONED 3676 3677 struct f2fs_report_zones_args { 3678 struct f2fs_sb_info *sbi; 3679 struct f2fs_dev_info *dev; 3680 }; 3681 3682 static int f2fs_report_zone_cb(struct blk_zone *zone, unsigned int idx, 3683 void *data) 3684 { 3685 struct f2fs_report_zones_args *rz_args = data; 3686 block_t unusable_blocks = (zone->len - zone->capacity) >> 3687 F2FS_LOG_SECTORS_PER_BLOCK; 3688 3689 if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL) 3690 return 0; 3691 3692 set_bit(idx, rz_args->dev->blkz_seq); 3693 if (!rz_args->sbi->unusable_blocks_per_sec) { 3694 rz_args->sbi->unusable_blocks_per_sec = unusable_blocks; 3695 return 0; 3696 } 3697 if (rz_args->sbi->unusable_blocks_per_sec != unusable_blocks) { 3698 f2fs_err(rz_args->sbi, "F2FS supports single zone capacity\n"); 3699 return -EINVAL; 3700 } 3701 return 0; 3702 } 3703 3704 static int init_blkz_info(struct f2fs_sb_info *sbi, int devi) 3705 { 3706 struct block_device *bdev = FDEV(devi).bdev; 3707 sector_t nr_sectors = bdev_nr_sectors(bdev); 3708 struct f2fs_report_zones_args rep_zone_arg; 3709 u64 zone_sectors; 3710 int ret; 3711 3712 if (!f2fs_sb_has_blkzoned(sbi)) 3713 return 0; 3714 3715 zone_sectors = bdev_zone_sectors(bdev); 3716 if (!is_power_of_2(zone_sectors)) { 3717 f2fs_err(sbi, "F2FS does not support non power of 2 zone sizes\n"); 3718 return -EINVAL; 3719 } 3720 3721 if (sbi->blocks_per_blkz && sbi->blocks_per_blkz != 3722 SECTOR_TO_BLOCK(zone_sectors)) 3723 return -EINVAL; 3724 sbi->blocks_per_blkz = SECTOR_TO_BLOCK(zone_sectors); 3725 if (sbi->log_blocks_per_blkz && sbi->log_blocks_per_blkz != 3726 __ilog2_u32(sbi->blocks_per_blkz)) 3727 return -EINVAL; 3728 sbi->log_blocks_per_blkz = __ilog2_u32(sbi->blocks_per_blkz); 3729 FDEV(devi).nr_blkz = SECTOR_TO_BLOCK(nr_sectors) >> 3730 sbi->log_blocks_per_blkz; 3731 if (nr_sectors & (zone_sectors - 1)) 3732 FDEV(devi).nr_blkz++; 3733 3734 FDEV(devi).blkz_seq = f2fs_kvzalloc(sbi, 3735 BITS_TO_LONGS(FDEV(devi).nr_blkz) 3736 * sizeof(unsigned long), 3737 GFP_KERNEL); 3738 if (!FDEV(devi).blkz_seq) 3739 return -ENOMEM; 3740 3741 rep_zone_arg.sbi = sbi; 3742 rep_zone_arg.dev = &FDEV(devi); 3743 3744 ret = blkdev_report_zones(bdev, 0, BLK_ALL_ZONES, f2fs_report_zone_cb, 3745 &rep_zone_arg); 3746 if (ret < 0) 3747 return ret; 3748 return 0; 3749 } 3750 #endif 3751 3752 /* 3753 * Read f2fs raw super block. 3754 * Because we have two copies of super block, so read both of them 3755 * to get the first valid one. If any one of them is broken, we pass 3756 * them recovery flag back to the caller. 3757 */ 3758 static int read_raw_super_block(struct f2fs_sb_info *sbi, 3759 struct f2fs_super_block **raw_super, 3760 int *valid_super_block, int *recovery) 3761 { 3762 struct super_block *sb = sbi->sb; 3763 int block; 3764 struct buffer_head *bh; 3765 struct f2fs_super_block *super; 3766 int err = 0; 3767 3768 super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL); 3769 if (!super) 3770 return -ENOMEM; 3771 3772 for (block = 0; block < 2; block++) { 3773 bh = sb_bread(sb, block); 3774 if (!bh) { 3775 f2fs_err(sbi, "Unable to read %dth superblock", 3776 block + 1); 3777 err = -EIO; 3778 *recovery = 1; 3779 continue; 3780 } 3781 3782 /* sanity checking of raw super */ 3783 err = sanity_check_raw_super(sbi, bh); 3784 if (err) { 3785 f2fs_err(sbi, "Can't find valid F2FS filesystem in %dth superblock", 3786 block + 1); 3787 brelse(bh); 3788 *recovery = 1; 3789 continue; 3790 } 3791 3792 if (!*raw_super) { 3793 memcpy(super, bh->b_data + F2FS_SUPER_OFFSET, 3794 sizeof(*super)); 3795 *valid_super_block = block; 3796 *raw_super = super; 3797 } 3798 brelse(bh); 3799 } 3800 3801 /* No valid superblock */ 3802 if (!*raw_super) 3803 kfree(super); 3804 else 3805 err = 0; 3806 3807 return err; 3808 } 3809 3810 int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover) 3811 { 3812 struct buffer_head *bh; 3813 __u32 crc = 0; 3814 int err; 3815 3816 if ((recover && f2fs_readonly(sbi->sb)) || 3817 bdev_read_only(sbi->sb->s_bdev)) { 3818 set_sbi_flag(sbi, SBI_NEED_SB_WRITE); 3819 return -EROFS; 3820 } 3821 3822 /* we should update superblock crc here */ 3823 if (!recover && f2fs_sb_has_sb_chksum(sbi)) { 3824 crc = f2fs_crc32(sbi, F2FS_RAW_SUPER(sbi), 3825 offsetof(struct f2fs_super_block, crc)); 3826 F2FS_RAW_SUPER(sbi)->crc = cpu_to_le32(crc); 3827 } 3828 3829 /* write back-up superblock first */ 3830 bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1); 3831 if (!bh) 3832 return -EIO; 3833 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi)); 3834 brelse(bh); 3835 3836 /* if we are in recovery path, skip writing valid superblock */ 3837 if (recover || err) 3838 return err; 3839 3840 /* write current valid superblock */ 3841 bh = sb_bread(sbi->sb, sbi->valid_super_block); 3842 if (!bh) 3843 return -EIO; 3844 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi)); 3845 brelse(bh); 3846 return err; 3847 } 3848 3849 void f2fs_handle_stop(struct f2fs_sb_info *sbi, unsigned char reason) 3850 { 3851 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 3852 int err; 3853 3854 f2fs_down_write(&sbi->sb_lock); 3855 3856 if (raw_super->s_stop_reason[reason] < ((1 << BITS_PER_BYTE) - 1)) 3857 raw_super->s_stop_reason[reason]++; 3858 3859 err = f2fs_commit_super(sbi, false); 3860 if (err) 3861 f2fs_err(sbi, "f2fs_commit_super fails to record reason:%u err:%d", 3862 reason, err); 3863 f2fs_up_write(&sbi->sb_lock); 3864 } 3865 3866 static void f2fs_save_errors(struct f2fs_sb_info *sbi, unsigned char flag) 3867 { 3868 spin_lock(&sbi->error_lock); 3869 if (!test_bit(flag, (unsigned long *)sbi->errors)) { 3870 set_bit(flag, (unsigned long *)sbi->errors); 3871 sbi->error_dirty = true; 3872 } 3873 spin_unlock(&sbi->error_lock); 3874 } 3875 3876 static bool f2fs_update_errors(struct f2fs_sb_info *sbi) 3877 { 3878 bool need_update = false; 3879 3880 spin_lock(&sbi->error_lock); 3881 if (sbi->error_dirty) { 3882 memcpy(F2FS_RAW_SUPER(sbi)->s_errors, sbi->errors, 3883 MAX_F2FS_ERRORS); 3884 sbi->error_dirty = false; 3885 need_update = true; 3886 } 3887 spin_unlock(&sbi->error_lock); 3888 3889 return need_update; 3890 } 3891 3892 void f2fs_handle_error(struct f2fs_sb_info *sbi, unsigned char error) 3893 { 3894 int err; 3895 3896 f2fs_save_errors(sbi, error); 3897 3898 f2fs_down_write(&sbi->sb_lock); 3899 3900 if (!f2fs_update_errors(sbi)) 3901 goto out_unlock; 3902 3903 err = f2fs_commit_super(sbi, false); 3904 if (err) 3905 f2fs_err(sbi, "f2fs_commit_super fails to record errors:%u, err:%d", 3906 error, err); 3907 out_unlock: 3908 f2fs_up_write(&sbi->sb_lock); 3909 } 3910 3911 static int f2fs_scan_devices(struct f2fs_sb_info *sbi) 3912 { 3913 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 3914 unsigned int max_devices = MAX_DEVICES; 3915 unsigned int logical_blksize; 3916 int i; 3917 3918 /* Initialize single device information */ 3919 if (!RDEV(0).path[0]) { 3920 if (!bdev_is_zoned(sbi->sb->s_bdev)) 3921 return 0; 3922 max_devices = 1; 3923 } 3924 3925 /* 3926 * Initialize multiple devices information, or single 3927 * zoned block device information. 3928 */ 3929 sbi->devs = f2fs_kzalloc(sbi, 3930 array_size(max_devices, 3931 sizeof(struct f2fs_dev_info)), 3932 GFP_KERNEL); 3933 if (!sbi->devs) 3934 return -ENOMEM; 3935 3936 logical_blksize = bdev_logical_block_size(sbi->sb->s_bdev); 3937 sbi->aligned_blksize = true; 3938 3939 for (i = 0; i < max_devices; i++) { 3940 3941 if (i > 0 && !RDEV(i).path[0]) 3942 break; 3943 3944 if (max_devices == 1) { 3945 /* Single zoned block device mount */ 3946 FDEV(0).bdev = 3947 blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev, 3948 sbi->sb->s_mode, sbi->sb->s_type); 3949 } else { 3950 /* Multi-device mount */ 3951 memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN); 3952 FDEV(i).total_segments = 3953 le32_to_cpu(RDEV(i).total_segments); 3954 if (i == 0) { 3955 FDEV(i).start_blk = 0; 3956 FDEV(i).end_blk = FDEV(i).start_blk + 3957 (FDEV(i).total_segments << 3958 sbi->log_blocks_per_seg) - 1 + 3959 le32_to_cpu(raw_super->segment0_blkaddr); 3960 } else { 3961 FDEV(i).start_blk = FDEV(i - 1).end_blk + 1; 3962 FDEV(i).end_blk = FDEV(i).start_blk + 3963 (FDEV(i).total_segments << 3964 sbi->log_blocks_per_seg) - 1; 3965 } 3966 FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path, 3967 sbi->sb->s_mode, sbi->sb->s_type); 3968 } 3969 if (IS_ERR(FDEV(i).bdev)) 3970 return PTR_ERR(FDEV(i).bdev); 3971 3972 /* to release errored devices */ 3973 sbi->s_ndevs = i + 1; 3974 3975 if (logical_blksize != bdev_logical_block_size(FDEV(i).bdev)) 3976 sbi->aligned_blksize = false; 3977 3978 #ifdef CONFIG_BLK_DEV_ZONED 3979 if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM && 3980 !f2fs_sb_has_blkzoned(sbi)) { 3981 f2fs_err(sbi, "Zoned block device feature not enabled"); 3982 return -EINVAL; 3983 } 3984 if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) { 3985 if (init_blkz_info(sbi, i)) { 3986 f2fs_err(sbi, "Failed to initialize F2FS blkzone information"); 3987 return -EINVAL; 3988 } 3989 if (max_devices == 1) 3990 break; 3991 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)", 3992 i, FDEV(i).path, 3993 FDEV(i).total_segments, 3994 FDEV(i).start_blk, FDEV(i).end_blk, 3995 bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ? 3996 "Host-aware" : "Host-managed"); 3997 continue; 3998 } 3999 #endif 4000 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x", 4001 i, FDEV(i).path, 4002 FDEV(i).total_segments, 4003 FDEV(i).start_blk, FDEV(i).end_blk); 4004 } 4005 f2fs_info(sbi, 4006 "IO Block Size: %8d KB", F2FS_IO_SIZE_KB(sbi)); 4007 return 0; 4008 } 4009 4010 static int f2fs_setup_casefold(struct f2fs_sb_info *sbi) 4011 { 4012 #if IS_ENABLED(CONFIG_UNICODE) 4013 if (f2fs_sb_has_casefold(sbi) && !sbi->sb->s_encoding) { 4014 const struct f2fs_sb_encodings *encoding_info; 4015 struct unicode_map *encoding; 4016 __u16 encoding_flags; 4017 4018 encoding_info = f2fs_sb_read_encoding(sbi->raw_super); 4019 if (!encoding_info) { 4020 f2fs_err(sbi, 4021 "Encoding requested by superblock is unknown"); 4022 return -EINVAL; 4023 } 4024 4025 encoding_flags = le16_to_cpu(sbi->raw_super->s_encoding_flags); 4026 encoding = utf8_load(encoding_info->version); 4027 if (IS_ERR(encoding)) { 4028 f2fs_err(sbi, 4029 "can't mount with superblock charset: %s-%u.%u.%u " 4030 "not supported by the kernel. flags: 0x%x.", 4031 encoding_info->name, 4032 unicode_major(encoding_info->version), 4033 unicode_minor(encoding_info->version), 4034 unicode_rev(encoding_info->version), 4035 encoding_flags); 4036 return PTR_ERR(encoding); 4037 } 4038 f2fs_info(sbi, "Using encoding defined by superblock: " 4039 "%s-%u.%u.%u with flags 0x%hx", encoding_info->name, 4040 unicode_major(encoding_info->version), 4041 unicode_minor(encoding_info->version), 4042 unicode_rev(encoding_info->version), 4043 encoding_flags); 4044 4045 sbi->sb->s_encoding = encoding; 4046 sbi->sb->s_encoding_flags = encoding_flags; 4047 } 4048 #else 4049 if (f2fs_sb_has_casefold(sbi)) { 4050 f2fs_err(sbi, "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE"); 4051 return -EINVAL; 4052 } 4053 #endif 4054 return 0; 4055 } 4056 4057 static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi) 4058 { 4059 struct f2fs_sm_info *sm_i = SM_I(sbi); 4060 4061 /* adjust parameters according to the volume size */ 4062 if (sm_i->main_segments <= SMALL_VOLUME_SEGMENTS) { 4063 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE; 4064 if (f2fs_block_unit_discard(sbi)) 4065 sm_i->dcc_info->discard_granularity = 1; 4066 sm_i->ipu_policy = 1 << F2FS_IPU_FORCE | 4067 1 << F2FS_IPU_HONOR_OPU_WRITE; 4068 } 4069 4070 sbi->readdir_ra = 1; 4071 } 4072 4073 static int f2fs_fill_super(struct super_block *sb, void *data, int silent) 4074 { 4075 struct f2fs_sb_info *sbi; 4076 struct f2fs_super_block *raw_super; 4077 struct inode *root; 4078 int err; 4079 bool skip_recovery = false, need_fsck = false; 4080 char *options = NULL; 4081 int recovery, i, valid_super_block; 4082 struct curseg_info *seg_i; 4083 int retry_cnt = 1; 4084 4085 try_onemore: 4086 err = -EINVAL; 4087 raw_super = NULL; 4088 valid_super_block = -1; 4089 recovery = 0; 4090 4091 /* allocate memory for f2fs-specific super block info */ 4092 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL); 4093 if (!sbi) 4094 return -ENOMEM; 4095 4096 sbi->sb = sb; 4097 4098 /* Load the checksum driver */ 4099 sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0); 4100 if (IS_ERR(sbi->s_chksum_driver)) { 4101 f2fs_err(sbi, "Cannot load crc32 driver."); 4102 err = PTR_ERR(sbi->s_chksum_driver); 4103 sbi->s_chksum_driver = NULL; 4104 goto free_sbi; 4105 } 4106 4107 /* set a block size */ 4108 if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) { 4109 f2fs_err(sbi, "unable to set blocksize"); 4110 goto free_sbi; 4111 } 4112 4113 err = read_raw_super_block(sbi, &raw_super, &valid_super_block, 4114 &recovery); 4115 if (err) 4116 goto free_sbi; 4117 4118 sb->s_fs_info = sbi; 4119 sbi->raw_super = raw_super; 4120 4121 /* precompute checksum seed for metadata */ 4122 if (f2fs_sb_has_inode_chksum(sbi)) 4123 sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid, 4124 sizeof(raw_super->uuid)); 4125 4126 default_options(sbi); 4127 /* parse mount options */ 4128 options = kstrdup((const char *)data, GFP_KERNEL); 4129 if (data && !options) { 4130 err = -ENOMEM; 4131 goto free_sb_buf; 4132 } 4133 4134 err = parse_options(sb, options, false); 4135 if (err) 4136 goto free_options; 4137 4138 sb->s_maxbytes = max_file_blocks(NULL) << 4139 le32_to_cpu(raw_super->log_blocksize); 4140 sb->s_max_links = F2FS_LINK_MAX; 4141 4142 err = f2fs_setup_casefold(sbi); 4143 if (err) 4144 goto free_options; 4145 4146 #ifdef CONFIG_QUOTA 4147 sb->dq_op = &f2fs_quota_operations; 4148 sb->s_qcop = &f2fs_quotactl_ops; 4149 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ; 4150 4151 if (f2fs_sb_has_quota_ino(sbi)) { 4152 for (i = 0; i < MAXQUOTAS; i++) { 4153 if (f2fs_qf_ino(sbi->sb, i)) 4154 sbi->nquota_files++; 4155 } 4156 } 4157 #endif 4158 4159 sb->s_op = &f2fs_sops; 4160 #ifdef CONFIG_FS_ENCRYPTION 4161 sb->s_cop = &f2fs_cryptops; 4162 #endif 4163 #ifdef CONFIG_FS_VERITY 4164 sb->s_vop = &f2fs_verityops; 4165 #endif 4166 sb->s_xattr = f2fs_xattr_handlers; 4167 sb->s_export_op = &f2fs_export_ops; 4168 sb->s_magic = F2FS_SUPER_MAGIC; 4169 sb->s_time_gran = 1; 4170 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) | 4171 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0); 4172 memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid)); 4173 sb->s_iflags |= SB_I_CGROUPWB; 4174 4175 /* init f2fs-specific super block info */ 4176 sbi->valid_super_block = valid_super_block; 4177 init_f2fs_rwsem(&sbi->gc_lock); 4178 mutex_init(&sbi->writepages); 4179 init_f2fs_rwsem(&sbi->cp_global_sem); 4180 init_f2fs_rwsem(&sbi->node_write); 4181 init_f2fs_rwsem(&sbi->node_change); 4182 4183 /* disallow all the data/node/meta page writes */ 4184 set_sbi_flag(sbi, SBI_POR_DOING); 4185 spin_lock_init(&sbi->stat_lock); 4186 4187 err = f2fs_init_write_merge_io(sbi); 4188 if (err) 4189 goto free_bio_info; 4190 4191 init_f2fs_rwsem(&sbi->cp_rwsem); 4192 init_f2fs_rwsem(&sbi->quota_sem); 4193 init_waitqueue_head(&sbi->cp_wait); 4194 init_sb_info(sbi); 4195 4196 err = f2fs_init_iostat(sbi); 4197 if (err) 4198 goto free_bio_info; 4199 4200 err = init_percpu_info(sbi); 4201 if (err) 4202 goto free_iostat; 4203 4204 if (F2FS_IO_ALIGNED(sbi)) { 4205 sbi->write_io_dummy = 4206 mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0); 4207 if (!sbi->write_io_dummy) { 4208 err = -ENOMEM; 4209 goto free_percpu; 4210 } 4211 } 4212 4213 /* init per sbi slab cache */ 4214 err = f2fs_init_xattr_caches(sbi); 4215 if (err) 4216 goto free_io_dummy; 4217 err = f2fs_init_page_array_cache(sbi); 4218 if (err) 4219 goto free_xattr_cache; 4220 4221 /* get an inode for meta space */ 4222 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi)); 4223 if (IS_ERR(sbi->meta_inode)) { 4224 f2fs_err(sbi, "Failed to read F2FS meta data inode"); 4225 err = PTR_ERR(sbi->meta_inode); 4226 goto free_page_array_cache; 4227 } 4228 4229 err = f2fs_get_valid_checkpoint(sbi); 4230 if (err) { 4231 f2fs_err(sbi, "Failed to get valid F2FS checkpoint"); 4232 goto free_meta_inode; 4233 } 4234 4235 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_QUOTA_NEED_FSCK_FLAG)) 4236 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 4237 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_DISABLED_QUICK_FLAG)) { 4238 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK); 4239 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL; 4240 } 4241 4242 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FSCK_FLAG)) 4243 set_sbi_flag(sbi, SBI_NEED_FSCK); 4244 4245 /* Initialize device list */ 4246 err = f2fs_scan_devices(sbi); 4247 if (err) { 4248 f2fs_err(sbi, "Failed to find devices"); 4249 goto free_devices; 4250 } 4251 4252 err = f2fs_init_post_read_wq(sbi); 4253 if (err) { 4254 f2fs_err(sbi, "Failed to initialize post read workqueue"); 4255 goto free_devices; 4256 } 4257 4258 spin_lock_init(&sbi->error_lock); 4259 memcpy(sbi->errors, raw_super->s_errors, MAX_F2FS_ERRORS); 4260 4261 sbi->total_valid_node_count = 4262 le32_to_cpu(sbi->ckpt->valid_node_count); 4263 percpu_counter_set(&sbi->total_valid_inode_count, 4264 le32_to_cpu(sbi->ckpt->valid_inode_count)); 4265 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count); 4266 sbi->total_valid_block_count = 4267 le64_to_cpu(sbi->ckpt->valid_block_count); 4268 sbi->last_valid_block_count = sbi->total_valid_block_count; 4269 sbi->reserved_blocks = 0; 4270 sbi->current_reserved_blocks = 0; 4271 limit_reserve_root(sbi); 4272 adjust_unusable_cap_perc(sbi); 4273 4274 for (i = 0; i < NR_INODE_TYPE; i++) { 4275 INIT_LIST_HEAD(&sbi->inode_list[i]); 4276 spin_lock_init(&sbi->inode_lock[i]); 4277 } 4278 mutex_init(&sbi->flush_lock); 4279 4280 f2fs_init_extent_cache_info(sbi); 4281 4282 f2fs_init_ino_entry_info(sbi); 4283 4284 f2fs_init_fsync_node_info(sbi); 4285 4286 /* setup checkpoint request control and start checkpoint issue thread */ 4287 f2fs_init_ckpt_req_control(sbi); 4288 if (!f2fs_readonly(sb) && !test_opt(sbi, DISABLE_CHECKPOINT) && 4289 test_opt(sbi, MERGE_CHECKPOINT)) { 4290 err = f2fs_start_ckpt_thread(sbi); 4291 if (err) { 4292 f2fs_err(sbi, 4293 "Failed to start F2FS issue_checkpoint_thread (%d)", 4294 err); 4295 goto stop_ckpt_thread; 4296 } 4297 } 4298 4299 /* setup f2fs internal modules */ 4300 err = f2fs_build_segment_manager(sbi); 4301 if (err) { 4302 f2fs_err(sbi, "Failed to initialize F2FS segment manager (%d)", 4303 err); 4304 goto free_sm; 4305 } 4306 err = f2fs_build_node_manager(sbi); 4307 if (err) { 4308 f2fs_err(sbi, "Failed to initialize F2FS node manager (%d)", 4309 err); 4310 goto free_nm; 4311 } 4312 4313 err = adjust_reserved_segment(sbi); 4314 if (err) 4315 goto free_nm; 4316 4317 /* For write statistics */ 4318 sbi->sectors_written_start = f2fs_get_sectors_written(sbi); 4319 4320 /* Read accumulated write IO statistics if exists */ 4321 seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE); 4322 if (__exist_node_summaries(sbi)) 4323 sbi->kbytes_written = 4324 le64_to_cpu(seg_i->journal->info.kbytes_written); 4325 4326 f2fs_build_gc_manager(sbi); 4327 4328 err = f2fs_build_stats(sbi); 4329 if (err) 4330 goto free_nm; 4331 4332 /* get an inode for node space */ 4333 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi)); 4334 if (IS_ERR(sbi->node_inode)) { 4335 f2fs_err(sbi, "Failed to read node inode"); 4336 err = PTR_ERR(sbi->node_inode); 4337 goto free_stats; 4338 } 4339 4340 /* read root inode and dentry */ 4341 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi)); 4342 if (IS_ERR(root)) { 4343 f2fs_err(sbi, "Failed to read root inode"); 4344 err = PTR_ERR(root); 4345 goto free_node_inode; 4346 } 4347 if (!S_ISDIR(root->i_mode) || !root->i_blocks || 4348 !root->i_size || !root->i_nlink) { 4349 iput(root); 4350 err = -EINVAL; 4351 goto free_node_inode; 4352 } 4353 4354 sb->s_root = d_make_root(root); /* allocate root dentry */ 4355 if (!sb->s_root) { 4356 err = -ENOMEM; 4357 goto free_node_inode; 4358 } 4359 4360 err = f2fs_init_compress_inode(sbi); 4361 if (err) 4362 goto free_root_inode; 4363 4364 err = f2fs_register_sysfs(sbi); 4365 if (err) 4366 goto free_compress_inode; 4367 4368 #ifdef CONFIG_QUOTA 4369 /* Enable quota usage during mount */ 4370 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) { 4371 err = f2fs_enable_quotas(sb); 4372 if (err) 4373 f2fs_err(sbi, "Cannot turn on quotas: error %d", err); 4374 } 4375 #endif 4376 /* if there are any orphan inodes, free them */ 4377 err = f2fs_recover_orphan_inodes(sbi); 4378 if (err) 4379 goto free_meta; 4380 4381 if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG))) 4382 goto reset_checkpoint; 4383 4384 /* recover fsynced data */ 4385 if (!test_opt(sbi, DISABLE_ROLL_FORWARD) && 4386 !test_opt(sbi, NORECOVERY)) { 4387 /* 4388 * mount should be failed, when device has readonly mode, and 4389 * previous checkpoint was not done by clean system shutdown. 4390 */ 4391 if (f2fs_hw_is_readonly(sbi)) { 4392 if (!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) { 4393 err = f2fs_recover_fsync_data(sbi, true); 4394 if (err > 0) { 4395 err = -EROFS; 4396 f2fs_err(sbi, "Need to recover fsync data, but " 4397 "write access unavailable, please try " 4398 "mount w/ disable_roll_forward or norecovery"); 4399 } 4400 if (err < 0) 4401 goto free_meta; 4402 } 4403 f2fs_info(sbi, "write access unavailable, skipping recovery"); 4404 goto reset_checkpoint; 4405 } 4406 4407 if (need_fsck) 4408 set_sbi_flag(sbi, SBI_NEED_FSCK); 4409 4410 if (skip_recovery) 4411 goto reset_checkpoint; 4412 4413 err = f2fs_recover_fsync_data(sbi, false); 4414 if (err < 0) { 4415 if (err != -ENOMEM) 4416 skip_recovery = true; 4417 need_fsck = true; 4418 f2fs_err(sbi, "Cannot recover all fsync data errno=%d", 4419 err); 4420 goto free_meta; 4421 } 4422 } else { 4423 err = f2fs_recover_fsync_data(sbi, true); 4424 4425 if (!f2fs_readonly(sb) && err > 0) { 4426 err = -EINVAL; 4427 f2fs_err(sbi, "Need to recover fsync data"); 4428 goto free_meta; 4429 } 4430 } 4431 4432 /* 4433 * If the f2fs is not readonly and fsync data recovery succeeds, 4434 * check zoned block devices' write pointer consistency. 4435 */ 4436 if (!err && !f2fs_readonly(sb) && f2fs_sb_has_blkzoned(sbi)) { 4437 err = f2fs_check_write_pointer(sbi); 4438 if (err) 4439 goto free_meta; 4440 } 4441 4442 reset_checkpoint: 4443 f2fs_init_inmem_curseg(sbi); 4444 4445 /* f2fs_recover_fsync_data() cleared this already */ 4446 clear_sbi_flag(sbi, SBI_POR_DOING); 4447 4448 if (test_opt(sbi, DISABLE_CHECKPOINT)) { 4449 err = f2fs_disable_checkpoint(sbi); 4450 if (err) 4451 goto sync_free_meta; 4452 } else if (is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)) { 4453 f2fs_enable_checkpoint(sbi); 4454 } 4455 4456 /* 4457 * If filesystem is not mounted as read-only then 4458 * do start the gc_thread. 4459 */ 4460 if ((F2FS_OPTION(sbi).bggc_mode != BGGC_MODE_OFF || 4461 test_opt(sbi, GC_MERGE)) && !f2fs_readonly(sb)) { 4462 /* After POR, we can run background GC thread.*/ 4463 err = f2fs_start_gc_thread(sbi); 4464 if (err) 4465 goto sync_free_meta; 4466 } 4467 kvfree(options); 4468 4469 /* recover broken superblock */ 4470 if (recovery) { 4471 err = f2fs_commit_super(sbi, true); 4472 f2fs_info(sbi, "Try to recover %dth superblock, ret: %d", 4473 sbi->valid_super_block ? 1 : 2, err); 4474 } 4475 4476 f2fs_join_shrinker(sbi); 4477 4478 f2fs_tuning_parameters(sbi); 4479 4480 f2fs_notice(sbi, "Mounted with checkpoint version = %llx", 4481 cur_cp_version(F2FS_CKPT(sbi))); 4482 f2fs_update_time(sbi, CP_TIME); 4483 f2fs_update_time(sbi, REQ_TIME); 4484 clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK); 4485 return 0; 4486 4487 sync_free_meta: 4488 /* safe to flush all the data */ 4489 sync_filesystem(sbi->sb); 4490 retry_cnt = 0; 4491 4492 free_meta: 4493 #ifdef CONFIG_QUOTA 4494 f2fs_truncate_quota_inode_pages(sb); 4495 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) 4496 f2fs_quota_off_umount(sbi->sb); 4497 #endif 4498 /* 4499 * Some dirty meta pages can be produced by f2fs_recover_orphan_inodes() 4500 * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg() 4501 * followed by f2fs_write_checkpoint() through f2fs_write_node_pages(), which 4502 * falls into an infinite loop in f2fs_sync_meta_pages(). 4503 */ 4504 truncate_inode_pages_final(META_MAPPING(sbi)); 4505 /* evict some inodes being cached by GC */ 4506 evict_inodes(sb); 4507 f2fs_unregister_sysfs(sbi); 4508 free_compress_inode: 4509 f2fs_destroy_compress_inode(sbi); 4510 free_root_inode: 4511 dput(sb->s_root); 4512 sb->s_root = NULL; 4513 free_node_inode: 4514 f2fs_release_ino_entry(sbi, true); 4515 truncate_inode_pages_final(NODE_MAPPING(sbi)); 4516 iput(sbi->node_inode); 4517 sbi->node_inode = NULL; 4518 free_stats: 4519 f2fs_destroy_stats(sbi); 4520 free_nm: 4521 /* stop discard thread before destroying node manager */ 4522 f2fs_stop_discard_thread(sbi); 4523 f2fs_destroy_node_manager(sbi); 4524 free_sm: 4525 f2fs_destroy_segment_manager(sbi); 4526 f2fs_destroy_post_read_wq(sbi); 4527 stop_ckpt_thread: 4528 f2fs_stop_ckpt_thread(sbi); 4529 free_devices: 4530 destroy_device_list(sbi); 4531 kvfree(sbi->ckpt); 4532 free_meta_inode: 4533 make_bad_inode(sbi->meta_inode); 4534 iput(sbi->meta_inode); 4535 sbi->meta_inode = NULL; 4536 free_page_array_cache: 4537 f2fs_destroy_page_array_cache(sbi); 4538 free_xattr_cache: 4539 f2fs_destroy_xattr_caches(sbi); 4540 free_io_dummy: 4541 mempool_destroy(sbi->write_io_dummy); 4542 free_percpu: 4543 destroy_percpu_info(sbi); 4544 free_iostat: 4545 f2fs_destroy_iostat(sbi); 4546 free_bio_info: 4547 for (i = 0; i < NR_PAGE_TYPE; i++) 4548 kvfree(sbi->write_io[i]); 4549 4550 #if IS_ENABLED(CONFIG_UNICODE) 4551 utf8_unload(sb->s_encoding); 4552 sb->s_encoding = NULL; 4553 #endif 4554 free_options: 4555 #ifdef CONFIG_QUOTA 4556 for (i = 0; i < MAXQUOTAS; i++) 4557 kfree(F2FS_OPTION(sbi).s_qf_names[i]); 4558 #endif 4559 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy); 4560 kvfree(options); 4561 free_sb_buf: 4562 kfree(raw_super); 4563 free_sbi: 4564 if (sbi->s_chksum_driver) 4565 crypto_free_shash(sbi->s_chksum_driver); 4566 kfree(sbi); 4567 4568 /* give only one another chance */ 4569 if (retry_cnt > 0 && skip_recovery) { 4570 retry_cnt--; 4571 shrink_dcache_sb(sb); 4572 goto try_onemore; 4573 } 4574 return err; 4575 } 4576 4577 static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags, 4578 const char *dev_name, void *data) 4579 { 4580 return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super); 4581 } 4582 4583 static void kill_f2fs_super(struct super_block *sb) 4584 { 4585 if (sb->s_root) { 4586 struct f2fs_sb_info *sbi = F2FS_SB(sb); 4587 4588 set_sbi_flag(sbi, SBI_IS_CLOSE); 4589 f2fs_stop_gc_thread(sbi); 4590 f2fs_stop_discard_thread(sbi); 4591 4592 #ifdef CONFIG_F2FS_FS_COMPRESSION 4593 /* 4594 * latter evict_inode() can bypass checking and invalidating 4595 * compress inode cache. 4596 */ 4597 if (test_opt(sbi, COMPRESS_CACHE)) 4598 truncate_inode_pages_final(COMPRESS_MAPPING(sbi)); 4599 #endif 4600 4601 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) || 4602 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) { 4603 struct cp_control cpc = { 4604 .reason = CP_UMOUNT, 4605 }; 4606 f2fs_write_checkpoint(sbi, &cpc); 4607 } 4608 4609 if (is_sbi_flag_set(sbi, SBI_IS_RECOVERED) && f2fs_readonly(sb)) 4610 sb->s_flags &= ~SB_RDONLY; 4611 } 4612 kill_block_super(sb); 4613 } 4614 4615 static struct file_system_type f2fs_fs_type = { 4616 .owner = THIS_MODULE, 4617 .name = "f2fs", 4618 .mount = f2fs_mount, 4619 .kill_sb = kill_f2fs_super, 4620 .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP, 4621 }; 4622 MODULE_ALIAS_FS("f2fs"); 4623 4624 static int __init init_inodecache(void) 4625 { 4626 f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache", 4627 sizeof(struct f2fs_inode_info), 0, 4628 SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL); 4629 if (!f2fs_inode_cachep) 4630 return -ENOMEM; 4631 return 0; 4632 } 4633 4634 static void destroy_inodecache(void) 4635 { 4636 /* 4637 * Make sure all delayed rcu free inodes are flushed before we 4638 * destroy cache. 4639 */ 4640 rcu_barrier(); 4641 kmem_cache_destroy(f2fs_inode_cachep); 4642 } 4643 4644 static int __init init_f2fs_fs(void) 4645 { 4646 int err; 4647 4648 if (PAGE_SIZE != F2FS_BLKSIZE) { 4649 printk("F2FS not supported on PAGE_SIZE(%lu) != %d\n", 4650 PAGE_SIZE, F2FS_BLKSIZE); 4651 return -EINVAL; 4652 } 4653 4654 err = init_inodecache(); 4655 if (err) 4656 goto fail; 4657 err = f2fs_create_node_manager_caches(); 4658 if (err) 4659 goto free_inodecache; 4660 err = f2fs_create_segment_manager_caches(); 4661 if (err) 4662 goto free_node_manager_caches; 4663 err = f2fs_create_checkpoint_caches(); 4664 if (err) 4665 goto free_segment_manager_caches; 4666 err = f2fs_create_recovery_cache(); 4667 if (err) 4668 goto free_checkpoint_caches; 4669 err = f2fs_create_extent_cache(); 4670 if (err) 4671 goto free_recovery_cache; 4672 err = f2fs_create_garbage_collection_cache(); 4673 if (err) 4674 goto free_extent_cache; 4675 err = f2fs_init_sysfs(); 4676 if (err) 4677 goto free_garbage_collection_cache; 4678 err = register_shrinker(&f2fs_shrinker_info, "f2fs-shrinker"); 4679 if (err) 4680 goto free_sysfs; 4681 err = register_filesystem(&f2fs_fs_type); 4682 if (err) 4683 goto free_shrinker; 4684 f2fs_create_root_stats(); 4685 err = f2fs_init_post_read_processing(); 4686 if (err) 4687 goto free_root_stats; 4688 err = f2fs_init_iostat_processing(); 4689 if (err) 4690 goto free_post_read; 4691 err = f2fs_init_bio_entry_cache(); 4692 if (err) 4693 goto free_iostat; 4694 err = f2fs_init_bioset(); 4695 if (err) 4696 goto free_bio_enrty_cache; 4697 err = f2fs_init_compress_mempool(); 4698 if (err) 4699 goto free_bioset; 4700 err = f2fs_init_compress_cache(); 4701 if (err) 4702 goto free_compress_mempool; 4703 err = f2fs_create_casefold_cache(); 4704 if (err) 4705 goto free_compress_cache; 4706 return 0; 4707 free_compress_cache: 4708 f2fs_destroy_compress_cache(); 4709 free_compress_mempool: 4710 f2fs_destroy_compress_mempool(); 4711 free_bioset: 4712 f2fs_destroy_bioset(); 4713 free_bio_enrty_cache: 4714 f2fs_destroy_bio_entry_cache(); 4715 free_iostat: 4716 f2fs_destroy_iostat_processing(); 4717 free_post_read: 4718 f2fs_destroy_post_read_processing(); 4719 free_root_stats: 4720 f2fs_destroy_root_stats(); 4721 unregister_filesystem(&f2fs_fs_type); 4722 free_shrinker: 4723 unregister_shrinker(&f2fs_shrinker_info); 4724 free_sysfs: 4725 f2fs_exit_sysfs(); 4726 free_garbage_collection_cache: 4727 f2fs_destroy_garbage_collection_cache(); 4728 free_extent_cache: 4729 f2fs_destroy_extent_cache(); 4730 free_recovery_cache: 4731 f2fs_destroy_recovery_cache(); 4732 free_checkpoint_caches: 4733 f2fs_destroy_checkpoint_caches(); 4734 free_segment_manager_caches: 4735 f2fs_destroy_segment_manager_caches(); 4736 free_node_manager_caches: 4737 f2fs_destroy_node_manager_caches(); 4738 free_inodecache: 4739 destroy_inodecache(); 4740 fail: 4741 return err; 4742 } 4743 4744 static void __exit exit_f2fs_fs(void) 4745 { 4746 f2fs_destroy_casefold_cache(); 4747 f2fs_destroy_compress_cache(); 4748 f2fs_destroy_compress_mempool(); 4749 f2fs_destroy_bioset(); 4750 f2fs_destroy_bio_entry_cache(); 4751 f2fs_destroy_iostat_processing(); 4752 f2fs_destroy_post_read_processing(); 4753 f2fs_destroy_root_stats(); 4754 unregister_filesystem(&f2fs_fs_type); 4755 unregister_shrinker(&f2fs_shrinker_info); 4756 f2fs_exit_sysfs(); 4757 f2fs_destroy_garbage_collection_cache(); 4758 f2fs_destroy_extent_cache(); 4759 f2fs_destroy_recovery_cache(); 4760 f2fs_destroy_checkpoint_caches(); 4761 f2fs_destroy_segment_manager_caches(); 4762 f2fs_destroy_node_manager_caches(); 4763 destroy_inodecache(); 4764 } 4765 4766 module_init(init_f2fs_fs) 4767 module_exit(exit_f2fs_fs) 4768 4769 MODULE_AUTHOR("Samsung Electronics's Praesto Team"); 4770 MODULE_DESCRIPTION("Flash Friendly File System"); 4771 MODULE_LICENSE("GPL"); 4772 MODULE_SOFTDEP("pre: crc32"); 4773 4774