1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * fs/f2fs/super.c 4 * 5 * Copyright (c) 2012 Samsung Electronics Co., Ltd. 6 * http://www.samsung.com/ 7 */ 8 #include <linux/module.h> 9 #include <linux/init.h> 10 #include <linux/fs.h> 11 #include <linux/fs_context.h> 12 #include <linux/sched/mm.h> 13 #include <linux/statfs.h> 14 #include <linux/buffer_head.h> 15 #include <linux/kthread.h> 16 #include <linux/parser.h> 17 #include <linux/mount.h> 18 #include <linux/seq_file.h> 19 #include <linux/proc_fs.h> 20 #include <linux/random.h> 21 #include <linux/exportfs.h> 22 #include <linux/blkdev.h> 23 #include <linux/quotaops.h> 24 #include <linux/f2fs_fs.h> 25 #include <linux/sysfs.h> 26 #include <linux/quota.h> 27 #include <linux/unicode.h> 28 #include <linux/part_stat.h> 29 #include <linux/zstd.h> 30 #include <linux/lz4.h> 31 32 #include "f2fs.h" 33 #include "node.h" 34 #include "segment.h" 35 #include "xattr.h" 36 #include "gc.h" 37 #include "iostat.h" 38 39 #define CREATE_TRACE_POINTS 40 #include <trace/events/f2fs.h> 41 42 static struct kmem_cache *f2fs_inode_cachep; 43 44 #ifdef CONFIG_F2FS_FAULT_INJECTION 45 46 const char *f2fs_fault_name[FAULT_MAX] = { 47 [FAULT_KMALLOC] = "kmalloc", 48 [FAULT_KVMALLOC] = "kvmalloc", 49 [FAULT_PAGE_ALLOC] = "page alloc", 50 [FAULT_PAGE_GET] = "page get", 51 [FAULT_ALLOC_NID] = "alloc nid", 52 [FAULT_ORPHAN] = "orphan", 53 [FAULT_BLOCK] = "no more block", 54 [FAULT_DIR_DEPTH] = "too big dir depth", 55 [FAULT_EVICT_INODE] = "evict_inode fail", 56 [FAULT_TRUNCATE] = "truncate fail", 57 [FAULT_READ_IO] = "read IO error", 58 [FAULT_CHECKPOINT] = "checkpoint error", 59 [FAULT_DISCARD] = "discard error", 60 [FAULT_WRITE_IO] = "write IO error", 61 [FAULT_SLAB_ALLOC] = "slab alloc", 62 [FAULT_DQUOT_INIT] = "dquot initialize", 63 [FAULT_LOCK_OP] = "lock_op", 64 [FAULT_BLKADDR] = "invalid blkaddr", 65 }; 66 67 void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate, 68 unsigned int type) 69 { 70 struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info; 71 72 if (rate) { 73 atomic_set(&ffi->inject_ops, 0); 74 ffi->inject_rate = rate; 75 } 76 77 if (type) 78 ffi->inject_type = type; 79 80 if (!rate && !type) 81 memset(ffi, 0, sizeof(struct f2fs_fault_info)); 82 } 83 #endif 84 85 /* f2fs-wide shrinker description */ 86 static struct shrinker f2fs_shrinker_info = { 87 .scan_objects = f2fs_shrink_scan, 88 .count_objects = f2fs_shrink_count, 89 .seeks = DEFAULT_SEEKS, 90 }; 91 92 enum { 93 Opt_gc_background, 94 Opt_disable_roll_forward, 95 Opt_norecovery, 96 Opt_discard, 97 Opt_nodiscard, 98 Opt_noheap, 99 Opt_heap, 100 Opt_user_xattr, 101 Opt_nouser_xattr, 102 Opt_acl, 103 Opt_noacl, 104 Opt_active_logs, 105 Opt_disable_ext_identify, 106 Opt_inline_xattr, 107 Opt_noinline_xattr, 108 Opt_inline_xattr_size, 109 Opt_inline_data, 110 Opt_inline_dentry, 111 Opt_noinline_dentry, 112 Opt_flush_merge, 113 Opt_noflush_merge, 114 Opt_barrier, 115 Opt_nobarrier, 116 Opt_fastboot, 117 Opt_extent_cache, 118 Opt_noextent_cache, 119 Opt_noinline_data, 120 Opt_data_flush, 121 Opt_reserve_root, 122 Opt_resgid, 123 Opt_resuid, 124 Opt_mode, 125 Opt_io_size_bits, 126 Opt_fault_injection, 127 Opt_fault_type, 128 Opt_lazytime, 129 Opt_nolazytime, 130 Opt_quota, 131 Opt_noquota, 132 Opt_usrquota, 133 Opt_grpquota, 134 Opt_prjquota, 135 Opt_usrjquota, 136 Opt_grpjquota, 137 Opt_prjjquota, 138 Opt_offusrjquota, 139 Opt_offgrpjquota, 140 Opt_offprjjquota, 141 Opt_jqfmt_vfsold, 142 Opt_jqfmt_vfsv0, 143 Opt_jqfmt_vfsv1, 144 Opt_alloc, 145 Opt_fsync, 146 Opt_test_dummy_encryption, 147 Opt_inlinecrypt, 148 Opt_checkpoint_disable, 149 Opt_checkpoint_disable_cap, 150 Opt_checkpoint_disable_cap_perc, 151 Opt_checkpoint_enable, 152 Opt_checkpoint_merge, 153 Opt_nocheckpoint_merge, 154 Opt_compress_algorithm, 155 Opt_compress_log_size, 156 Opt_compress_extension, 157 Opt_nocompress_extension, 158 Opt_compress_chksum, 159 Opt_compress_mode, 160 Opt_compress_cache, 161 Opt_atgc, 162 Opt_gc_merge, 163 Opt_nogc_merge, 164 Opt_discard_unit, 165 Opt_memory_mode, 166 Opt_age_extent_cache, 167 Opt_err, 168 }; 169 170 static match_table_t f2fs_tokens = { 171 {Opt_gc_background, "background_gc=%s"}, 172 {Opt_disable_roll_forward, "disable_roll_forward"}, 173 {Opt_norecovery, "norecovery"}, 174 {Opt_discard, "discard"}, 175 {Opt_nodiscard, "nodiscard"}, 176 {Opt_noheap, "no_heap"}, 177 {Opt_heap, "heap"}, 178 {Opt_user_xattr, "user_xattr"}, 179 {Opt_nouser_xattr, "nouser_xattr"}, 180 {Opt_acl, "acl"}, 181 {Opt_noacl, "noacl"}, 182 {Opt_active_logs, "active_logs=%u"}, 183 {Opt_disable_ext_identify, "disable_ext_identify"}, 184 {Opt_inline_xattr, "inline_xattr"}, 185 {Opt_noinline_xattr, "noinline_xattr"}, 186 {Opt_inline_xattr_size, "inline_xattr_size=%u"}, 187 {Opt_inline_data, "inline_data"}, 188 {Opt_inline_dentry, "inline_dentry"}, 189 {Opt_noinline_dentry, "noinline_dentry"}, 190 {Opt_flush_merge, "flush_merge"}, 191 {Opt_noflush_merge, "noflush_merge"}, 192 {Opt_barrier, "barrier"}, 193 {Opt_nobarrier, "nobarrier"}, 194 {Opt_fastboot, "fastboot"}, 195 {Opt_extent_cache, "extent_cache"}, 196 {Opt_noextent_cache, "noextent_cache"}, 197 {Opt_noinline_data, "noinline_data"}, 198 {Opt_data_flush, "data_flush"}, 199 {Opt_reserve_root, "reserve_root=%u"}, 200 {Opt_resgid, "resgid=%u"}, 201 {Opt_resuid, "resuid=%u"}, 202 {Opt_mode, "mode=%s"}, 203 {Opt_io_size_bits, "io_bits=%u"}, 204 {Opt_fault_injection, "fault_injection=%u"}, 205 {Opt_fault_type, "fault_type=%u"}, 206 {Opt_lazytime, "lazytime"}, 207 {Opt_nolazytime, "nolazytime"}, 208 {Opt_quota, "quota"}, 209 {Opt_noquota, "noquota"}, 210 {Opt_usrquota, "usrquota"}, 211 {Opt_grpquota, "grpquota"}, 212 {Opt_prjquota, "prjquota"}, 213 {Opt_usrjquota, "usrjquota=%s"}, 214 {Opt_grpjquota, "grpjquota=%s"}, 215 {Opt_prjjquota, "prjjquota=%s"}, 216 {Opt_offusrjquota, "usrjquota="}, 217 {Opt_offgrpjquota, "grpjquota="}, 218 {Opt_offprjjquota, "prjjquota="}, 219 {Opt_jqfmt_vfsold, "jqfmt=vfsold"}, 220 {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"}, 221 {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"}, 222 {Opt_alloc, "alloc_mode=%s"}, 223 {Opt_fsync, "fsync_mode=%s"}, 224 {Opt_test_dummy_encryption, "test_dummy_encryption=%s"}, 225 {Opt_test_dummy_encryption, "test_dummy_encryption"}, 226 {Opt_inlinecrypt, "inlinecrypt"}, 227 {Opt_checkpoint_disable, "checkpoint=disable"}, 228 {Opt_checkpoint_disable_cap, "checkpoint=disable:%u"}, 229 {Opt_checkpoint_disable_cap_perc, "checkpoint=disable:%u%%"}, 230 {Opt_checkpoint_enable, "checkpoint=enable"}, 231 {Opt_checkpoint_merge, "checkpoint_merge"}, 232 {Opt_nocheckpoint_merge, "nocheckpoint_merge"}, 233 {Opt_compress_algorithm, "compress_algorithm=%s"}, 234 {Opt_compress_log_size, "compress_log_size=%u"}, 235 {Opt_compress_extension, "compress_extension=%s"}, 236 {Opt_nocompress_extension, "nocompress_extension=%s"}, 237 {Opt_compress_chksum, "compress_chksum"}, 238 {Opt_compress_mode, "compress_mode=%s"}, 239 {Opt_compress_cache, "compress_cache"}, 240 {Opt_atgc, "atgc"}, 241 {Opt_gc_merge, "gc_merge"}, 242 {Opt_nogc_merge, "nogc_merge"}, 243 {Opt_discard_unit, "discard_unit=%s"}, 244 {Opt_memory_mode, "memory=%s"}, 245 {Opt_age_extent_cache, "age_extent_cache"}, 246 {Opt_err, NULL}, 247 }; 248 249 void f2fs_printk(struct f2fs_sb_info *sbi, const char *fmt, ...) 250 { 251 struct va_format vaf; 252 va_list args; 253 int level; 254 255 va_start(args, fmt); 256 257 level = printk_get_level(fmt); 258 vaf.fmt = printk_skip_level(fmt); 259 vaf.va = &args; 260 printk("%c%cF2FS-fs (%s): %pV\n", 261 KERN_SOH_ASCII, level, sbi->sb->s_id, &vaf); 262 263 va_end(args); 264 } 265 266 #if IS_ENABLED(CONFIG_UNICODE) 267 static const struct f2fs_sb_encodings { 268 __u16 magic; 269 char *name; 270 unsigned int version; 271 } f2fs_sb_encoding_map[] = { 272 {F2FS_ENC_UTF8_12_1, "utf8", UNICODE_AGE(12, 1, 0)}, 273 }; 274 275 static const struct f2fs_sb_encodings * 276 f2fs_sb_read_encoding(const struct f2fs_super_block *sb) 277 { 278 __u16 magic = le16_to_cpu(sb->s_encoding); 279 int i; 280 281 for (i = 0; i < ARRAY_SIZE(f2fs_sb_encoding_map); i++) 282 if (magic == f2fs_sb_encoding_map[i].magic) 283 return &f2fs_sb_encoding_map[i]; 284 285 return NULL; 286 } 287 288 struct kmem_cache *f2fs_cf_name_slab; 289 static int __init f2fs_create_casefold_cache(void) 290 { 291 f2fs_cf_name_slab = f2fs_kmem_cache_create("f2fs_casefolded_name", 292 F2FS_NAME_LEN); 293 return f2fs_cf_name_slab ? 0 : -ENOMEM; 294 } 295 296 static void f2fs_destroy_casefold_cache(void) 297 { 298 kmem_cache_destroy(f2fs_cf_name_slab); 299 } 300 #else 301 static int __init f2fs_create_casefold_cache(void) { return 0; } 302 static void f2fs_destroy_casefold_cache(void) { } 303 #endif 304 305 static inline void limit_reserve_root(struct f2fs_sb_info *sbi) 306 { 307 block_t limit = min((sbi->user_block_count >> 3), 308 sbi->user_block_count - sbi->reserved_blocks); 309 310 /* limit is 12.5% */ 311 if (test_opt(sbi, RESERVE_ROOT) && 312 F2FS_OPTION(sbi).root_reserved_blocks > limit) { 313 F2FS_OPTION(sbi).root_reserved_blocks = limit; 314 f2fs_info(sbi, "Reduce reserved blocks for root = %u", 315 F2FS_OPTION(sbi).root_reserved_blocks); 316 } 317 if (!test_opt(sbi, RESERVE_ROOT) && 318 (!uid_eq(F2FS_OPTION(sbi).s_resuid, 319 make_kuid(&init_user_ns, F2FS_DEF_RESUID)) || 320 !gid_eq(F2FS_OPTION(sbi).s_resgid, 321 make_kgid(&init_user_ns, F2FS_DEF_RESGID)))) 322 f2fs_info(sbi, "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root", 323 from_kuid_munged(&init_user_ns, 324 F2FS_OPTION(sbi).s_resuid), 325 from_kgid_munged(&init_user_ns, 326 F2FS_OPTION(sbi).s_resgid)); 327 } 328 329 static inline int adjust_reserved_segment(struct f2fs_sb_info *sbi) 330 { 331 unsigned int sec_blks = sbi->blocks_per_seg * sbi->segs_per_sec; 332 unsigned int avg_vblocks; 333 unsigned int wanted_reserved_segments; 334 block_t avail_user_block_count; 335 336 if (!F2FS_IO_ALIGNED(sbi)) 337 return 0; 338 339 /* average valid block count in section in worst case */ 340 avg_vblocks = sec_blks / F2FS_IO_SIZE(sbi); 341 342 /* 343 * we need enough free space when migrating one section in worst case 344 */ 345 wanted_reserved_segments = (F2FS_IO_SIZE(sbi) / avg_vblocks) * 346 reserved_segments(sbi); 347 wanted_reserved_segments -= reserved_segments(sbi); 348 349 avail_user_block_count = sbi->user_block_count - 350 sbi->current_reserved_blocks - 351 F2FS_OPTION(sbi).root_reserved_blocks; 352 353 if (wanted_reserved_segments * sbi->blocks_per_seg > 354 avail_user_block_count) { 355 f2fs_err(sbi, "IO align feature can't grab additional reserved segment: %u, available segments: %u", 356 wanted_reserved_segments, 357 avail_user_block_count >> sbi->log_blocks_per_seg); 358 return -ENOSPC; 359 } 360 361 SM_I(sbi)->additional_reserved_segments = wanted_reserved_segments; 362 363 f2fs_info(sbi, "IO align feature needs additional reserved segment: %u", 364 wanted_reserved_segments); 365 366 return 0; 367 } 368 369 static inline void adjust_unusable_cap_perc(struct f2fs_sb_info *sbi) 370 { 371 if (!F2FS_OPTION(sbi).unusable_cap_perc) 372 return; 373 374 if (F2FS_OPTION(sbi).unusable_cap_perc == 100) 375 F2FS_OPTION(sbi).unusable_cap = sbi->user_block_count; 376 else 377 F2FS_OPTION(sbi).unusable_cap = (sbi->user_block_count / 100) * 378 F2FS_OPTION(sbi).unusable_cap_perc; 379 380 f2fs_info(sbi, "Adjust unusable cap for checkpoint=disable = %u / %u%%", 381 F2FS_OPTION(sbi).unusable_cap, 382 F2FS_OPTION(sbi).unusable_cap_perc); 383 } 384 385 static void init_once(void *foo) 386 { 387 struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo; 388 389 inode_init_once(&fi->vfs_inode); 390 } 391 392 #ifdef CONFIG_QUOTA 393 static const char * const quotatypes[] = INITQFNAMES; 394 #define QTYPE2NAME(t) (quotatypes[t]) 395 static int f2fs_set_qf_name(struct super_block *sb, int qtype, 396 substring_t *args) 397 { 398 struct f2fs_sb_info *sbi = F2FS_SB(sb); 399 char *qname; 400 int ret = -EINVAL; 401 402 if (sb_any_quota_loaded(sb) && !F2FS_OPTION(sbi).s_qf_names[qtype]) { 403 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on"); 404 return -EINVAL; 405 } 406 if (f2fs_sb_has_quota_ino(sbi)) { 407 f2fs_info(sbi, "QUOTA feature is enabled, so ignore qf_name"); 408 return 0; 409 } 410 411 qname = match_strdup(args); 412 if (!qname) { 413 f2fs_err(sbi, "Not enough memory for storing quotafile name"); 414 return -ENOMEM; 415 } 416 if (F2FS_OPTION(sbi).s_qf_names[qtype]) { 417 if (strcmp(F2FS_OPTION(sbi).s_qf_names[qtype], qname) == 0) 418 ret = 0; 419 else 420 f2fs_err(sbi, "%s quota file already specified", 421 QTYPE2NAME(qtype)); 422 goto errout; 423 } 424 if (strchr(qname, '/')) { 425 f2fs_err(sbi, "quotafile must be on filesystem root"); 426 goto errout; 427 } 428 F2FS_OPTION(sbi).s_qf_names[qtype] = qname; 429 set_opt(sbi, QUOTA); 430 return 0; 431 errout: 432 kfree(qname); 433 return ret; 434 } 435 436 static int f2fs_clear_qf_name(struct super_block *sb, int qtype) 437 { 438 struct f2fs_sb_info *sbi = F2FS_SB(sb); 439 440 if (sb_any_quota_loaded(sb) && F2FS_OPTION(sbi).s_qf_names[qtype]) { 441 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on"); 442 return -EINVAL; 443 } 444 kfree(F2FS_OPTION(sbi).s_qf_names[qtype]); 445 F2FS_OPTION(sbi).s_qf_names[qtype] = NULL; 446 return 0; 447 } 448 449 static int f2fs_check_quota_options(struct f2fs_sb_info *sbi) 450 { 451 /* 452 * We do the test below only for project quotas. 'usrquota' and 453 * 'grpquota' mount options are allowed even without quota feature 454 * to support legacy quotas in quota files. 455 */ 456 if (test_opt(sbi, PRJQUOTA) && !f2fs_sb_has_project_quota(sbi)) { 457 f2fs_err(sbi, "Project quota feature not enabled. Cannot enable project quota enforcement."); 458 return -1; 459 } 460 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] || 461 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] || 462 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) { 463 if (test_opt(sbi, USRQUOTA) && 464 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]) 465 clear_opt(sbi, USRQUOTA); 466 467 if (test_opt(sbi, GRPQUOTA) && 468 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]) 469 clear_opt(sbi, GRPQUOTA); 470 471 if (test_opt(sbi, PRJQUOTA) && 472 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) 473 clear_opt(sbi, PRJQUOTA); 474 475 if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) || 476 test_opt(sbi, PRJQUOTA)) { 477 f2fs_err(sbi, "old and new quota format mixing"); 478 return -1; 479 } 480 481 if (!F2FS_OPTION(sbi).s_jquota_fmt) { 482 f2fs_err(sbi, "journaled quota format not specified"); 483 return -1; 484 } 485 } 486 487 if (f2fs_sb_has_quota_ino(sbi) && F2FS_OPTION(sbi).s_jquota_fmt) { 488 f2fs_info(sbi, "QUOTA feature is enabled, so ignore jquota_fmt"); 489 F2FS_OPTION(sbi).s_jquota_fmt = 0; 490 } 491 return 0; 492 } 493 #endif 494 495 static int f2fs_set_test_dummy_encryption(struct super_block *sb, 496 const char *opt, 497 const substring_t *arg, 498 bool is_remount) 499 { 500 struct f2fs_sb_info *sbi = F2FS_SB(sb); 501 struct fs_parameter param = { 502 .type = fs_value_is_string, 503 .string = arg->from ? arg->from : "", 504 }; 505 struct fscrypt_dummy_policy *policy = 506 &F2FS_OPTION(sbi).dummy_enc_policy; 507 int err; 508 509 if (!IS_ENABLED(CONFIG_FS_ENCRYPTION)) { 510 f2fs_warn(sbi, "test_dummy_encryption option not supported"); 511 return -EINVAL; 512 } 513 514 if (!f2fs_sb_has_encrypt(sbi)) { 515 f2fs_err(sbi, "Encrypt feature is off"); 516 return -EINVAL; 517 } 518 519 /* 520 * This mount option is just for testing, and it's not worthwhile to 521 * implement the extra complexity (e.g. RCU protection) that would be 522 * needed to allow it to be set or changed during remount. We do allow 523 * it to be specified during remount, but only if there is no change. 524 */ 525 if (is_remount && !fscrypt_is_dummy_policy_set(policy)) { 526 f2fs_warn(sbi, "Can't set test_dummy_encryption on remount"); 527 return -EINVAL; 528 } 529 530 err = fscrypt_parse_test_dummy_encryption(¶m, policy); 531 if (err) { 532 if (err == -EEXIST) 533 f2fs_warn(sbi, 534 "Can't change test_dummy_encryption on remount"); 535 else if (err == -EINVAL) 536 f2fs_warn(sbi, "Value of option \"%s\" is unrecognized", 537 opt); 538 else 539 f2fs_warn(sbi, "Error processing option \"%s\" [%d]", 540 opt, err); 541 return -EINVAL; 542 } 543 err = fscrypt_add_test_dummy_key(sb, policy); 544 if (err) { 545 f2fs_warn(sbi, "Error adding test dummy encryption key [%d]", 546 err); 547 return err; 548 } 549 f2fs_warn(sbi, "Test dummy encryption mode enabled"); 550 return 0; 551 } 552 553 #ifdef CONFIG_F2FS_FS_COMPRESSION 554 /* 555 * 1. The same extension name cannot not appear in both compress and non-compress extension 556 * at the same time. 557 * 2. If the compress extension specifies all files, the types specified by the non-compress 558 * extension will be treated as special cases and will not be compressed. 559 * 3. Don't allow the non-compress extension specifies all files. 560 */ 561 static int f2fs_test_compress_extension(struct f2fs_sb_info *sbi) 562 { 563 unsigned char (*ext)[F2FS_EXTENSION_LEN]; 564 unsigned char (*noext)[F2FS_EXTENSION_LEN]; 565 int ext_cnt, noext_cnt, index = 0, no_index = 0; 566 567 ext = F2FS_OPTION(sbi).extensions; 568 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt; 569 noext = F2FS_OPTION(sbi).noextensions; 570 noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt; 571 572 if (!noext_cnt) 573 return 0; 574 575 for (no_index = 0; no_index < noext_cnt; no_index++) { 576 if (!strcasecmp("*", noext[no_index])) { 577 f2fs_info(sbi, "Don't allow the nocompress extension specifies all files"); 578 return -EINVAL; 579 } 580 for (index = 0; index < ext_cnt; index++) { 581 if (!strcasecmp(ext[index], noext[no_index])) { 582 f2fs_info(sbi, "Don't allow the same extension %s appear in both compress and nocompress extension", 583 ext[index]); 584 return -EINVAL; 585 } 586 } 587 } 588 return 0; 589 } 590 591 #ifdef CONFIG_F2FS_FS_LZ4 592 static int f2fs_set_lz4hc_level(struct f2fs_sb_info *sbi, const char *str) 593 { 594 #ifdef CONFIG_F2FS_FS_LZ4HC 595 unsigned int level; 596 #endif 597 598 if (strlen(str) == 3) { 599 F2FS_OPTION(sbi).compress_level = 0; 600 return 0; 601 } 602 603 #ifdef CONFIG_F2FS_FS_LZ4HC 604 str += 3; 605 606 if (str[0] != ':') { 607 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>"); 608 return -EINVAL; 609 } 610 if (kstrtouint(str + 1, 10, &level)) 611 return -EINVAL; 612 613 if (level < LZ4HC_MIN_CLEVEL || level > LZ4HC_MAX_CLEVEL) { 614 f2fs_info(sbi, "invalid lz4hc compress level: %d", level); 615 return -EINVAL; 616 } 617 618 F2FS_OPTION(sbi).compress_level = level; 619 return 0; 620 #else 621 f2fs_info(sbi, "kernel doesn't support lz4hc compression"); 622 return -EINVAL; 623 #endif 624 } 625 #endif 626 627 #ifdef CONFIG_F2FS_FS_ZSTD 628 static int f2fs_set_zstd_level(struct f2fs_sb_info *sbi, const char *str) 629 { 630 unsigned int level; 631 int len = 4; 632 633 if (strlen(str) == len) { 634 F2FS_OPTION(sbi).compress_level = 0; 635 return 0; 636 } 637 638 str += len; 639 640 if (str[0] != ':') { 641 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>"); 642 return -EINVAL; 643 } 644 if (kstrtouint(str + 1, 10, &level)) 645 return -EINVAL; 646 647 if (!level || level > zstd_max_clevel()) { 648 f2fs_info(sbi, "invalid zstd compress level: %d", level); 649 return -EINVAL; 650 } 651 652 F2FS_OPTION(sbi).compress_level = level; 653 return 0; 654 } 655 #endif 656 #endif 657 658 static int parse_options(struct super_block *sb, char *options, bool is_remount) 659 { 660 struct f2fs_sb_info *sbi = F2FS_SB(sb); 661 substring_t args[MAX_OPT_ARGS]; 662 #ifdef CONFIG_F2FS_FS_COMPRESSION 663 unsigned char (*ext)[F2FS_EXTENSION_LEN]; 664 unsigned char (*noext)[F2FS_EXTENSION_LEN]; 665 int ext_cnt, noext_cnt; 666 #endif 667 char *p, *name; 668 int arg = 0; 669 kuid_t uid; 670 kgid_t gid; 671 int ret; 672 673 if (!options) 674 goto default_check; 675 676 while ((p = strsep(&options, ",")) != NULL) { 677 int token; 678 679 if (!*p) 680 continue; 681 /* 682 * Initialize args struct so we know whether arg was 683 * found; some options take optional arguments. 684 */ 685 args[0].to = args[0].from = NULL; 686 token = match_token(p, f2fs_tokens, args); 687 688 switch (token) { 689 case Opt_gc_background: 690 name = match_strdup(&args[0]); 691 692 if (!name) 693 return -ENOMEM; 694 if (!strcmp(name, "on")) { 695 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON; 696 } else if (!strcmp(name, "off")) { 697 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_OFF; 698 } else if (!strcmp(name, "sync")) { 699 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_SYNC; 700 } else { 701 kfree(name); 702 return -EINVAL; 703 } 704 kfree(name); 705 break; 706 case Opt_disable_roll_forward: 707 set_opt(sbi, DISABLE_ROLL_FORWARD); 708 break; 709 case Opt_norecovery: 710 /* this option mounts f2fs with ro */ 711 set_opt(sbi, NORECOVERY); 712 if (!f2fs_readonly(sb)) 713 return -EINVAL; 714 break; 715 case Opt_discard: 716 if (!f2fs_hw_support_discard(sbi)) { 717 f2fs_warn(sbi, "device does not support discard"); 718 break; 719 } 720 set_opt(sbi, DISCARD); 721 break; 722 case Opt_nodiscard: 723 if (f2fs_hw_should_discard(sbi)) { 724 f2fs_warn(sbi, "discard is required for zoned block devices"); 725 return -EINVAL; 726 } 727 clear_opt(sbi, DISCARD); 728 break; 729 case Opt_noheap: 730 set_opt(sbi, NOHEAP); 731 break; 732 case Opt_heap: 733 clear_opt(sbi, NOHEAP); 734 break; 735 #ifdef CONFIG_F2FS_FS_XATTR 736 case Opt_user_xattr: 737 set_opt(sbi, XATTR_USER); 738 break; 739 case Opt_nouser_xattr: 740 clear_opt(sbi, XATTR_USER); 741 break; 742 case Opt_inline_xattr: 743 set_opt(sbi, INLINE_XATTR); 744 break; 745 case Opt_noinline_xattr: 746 clear_opt(sbi, INLINE_XATTR); 747 break; 748 case Opt_inline_xattr_size: 749 if (args->from && match_int(args, &arg)) 750 return -EINVAL; 751 set_opt(sbi, INLINE_XATTR_SIZE); 752 F2FS_OPTION(sbi).inline_xattr_size = arg; 753 break; 754 #else 755 case Opt_user_xattr: 756 f2fs_info(sbi, "user_xattr options not supported"); 757 break; 758 case Opt_nouser_xattr: 759 f2fs_info(sbi, "nouser_xattr options not supported"); 760 break; 761 case Opt_inline_xattr: 762 f2fs_info(sbi, "inline_xattr options not supported"); 763 break; 764 case Opt_noinline_xattr: 765 f2fs_info(sbi, "noinline_xattr options not supported"); 766 break; 767 #endif 768 #ifdef CONFIG_F2FS_FS_POSIX_ACL 769 case Opt_acl: 770 set_opt(sbi, POSIX_ACL); 771 break; 772 case Opt_noacl: 773 clear_opt(sbi, POSIX_ACL); 774 break; 775 #else 776 case Opt_acl: 777 f2fs_info(sbi, "acl options not supported"); 778 break; 779 case Opt_noacl: 780 f2fs_info(sbi, "noacl options not supported"); 781 break; 782 #endif 783 case Opt_active_logs: 784 if (args->from && match_int(args, &arg)) 785 return -EINVAL; 786 if (arg != 2 && arg != 4 && 787 arg != NR_CURSEG_PERSIST_TYPE) 788 return -EINVAL; 789 F2FS_OPTION(sbi).active_logs = arg; 790 break; 791 case Opt_disable_ext_identify: 792 set_opt(sbi, DISABLE_EXT_IDENTIFY); 793 break; 794 case Opt_inline_data: 795 set_opt(sbi, INLINE_DATA); 796 break; 797 case Opt_inline_dentry: 798 set_opt(sbi, INLINE_DENTRY); 799 break; 800 case Opt_noinline_dentry: 801 clear_opt(sbi, INLINE_DENTRY); 802 break; 803 case Opt_flush_merge: 804 set_opt(sbi, FLUSH_MERGE); 805 break; 806 case Opt_noflush_merge: 807 clear_opt(sbi, FLUSH_MERGE); 808 break; 809 case Opt_nobarrier: 810 set_opt(sbi, NOBARRIER); 811 break; 812 case Opt_barrier: 813 clear_opt(sbi, NOBARRIER); 814 break; 815 case Opt_fastboot: 816 set_opt(sbi, FASTBOOT); 817 break; 818 case Opt_extent_cache: 819 set_opt(sbi, READ_EXTENT_CACHE); 820 break; 821 case Opt_noextent_cache: 822 clear_opt(sbi, READ_EXTENT_CACHE); 823 break; 824 case Opt_noinline_data: 825 clear_opt(sbi, INLINE_DATA); 826 break; 827 case Opt_data_flush: 828 set_opt(sbi, DATA_FLUSH); 829 break; 830 case Opt_reserve_root: 831 if (args->from && match_int(args, &arg)) 832 return -EINVAL; 833 if (test_opt(sbi, RESERVE_ROOT)) { 834 f2fs_info(sbi, "Preserve previous reserve_root=%u", 835 F2FS_OPTION(sbi).root_reserved_blocks); 836 } else { 837 F2FS_OPTION(sbi).root_reserved_blocks = arg; 838 set_opt(sbi, RESERVE_ROOT); 839 } 840 break; 841 case Opt_resuid: 842 if (args->from && match_int(args, &arg)) 843 return -EINVAL; 844 uid = make_kuid(current_user_ns(), arg); 845 if (!uid_valid(uid)) { 846 f2fs_err(sbi, "Invalid uid value %d", arg); 847 return -EINVAL; 848 } 849 F2FS_OPTION(sbi).s_resuid = uid; 850 break; 851 case Opt_resgid: 852 if (args->from && match_int(args, &arg)) 853 return -EINVAL; 854 gid = make_kgid(current_user_ns(), arg); 855 if (!gid_valid(gid)) { 856 f2fs_err(sbi, "Invalid gid value %d", arg); 857 return -EINVAL; 858 } 859 F2FS_OPTION(sbi).s_resgid = gid; 860 break; 861 case Opt_mode: 862 name = match_strdup(&args[0]); 863 864 if (!name) 865 return -ENOMEM; 866 if (!strcmp(name, "adaptive")) { 867 if (f2fs_sb_has_blkzoned(sbi)) { 868 f2fs_warn(sbi, "adaptive mode is not allowed with zoned block device feature"); 869 kfree(name); 870 return -EINVAL; 871 } 872 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE; 873 } else if (!strcmp(name, "lfs")) { 874 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS; 875 } else if (!strcmp(name, "fragment:segment")) { 876 F2FS_OPTION(sbi).fs_mode = FS_MODE_FRAGMENT_SEG; 877 } else if (!strcmp(name, "fragment:block")) { 878 F2FS_OPTION(sbi).fs_mode = FS_MODE_FRAGMENT_BLK; 879 } else { 880 kfree(name); 881 return -EINVAL; 882 } 883 kfree(name); 884 break; 885 case Opt_io_size_bits: 886 if (args->from && match_int(args, &arg)) 887 return -EINVAL; 888 if (arg <= 0 || arg > __ilog2_u32(BIO_MAX_VECS)) { 889 f2fs_warn(sbi, "Not support %d, larger than %d", 890 1 << arg, BIO_MAX_VECS); 891 return -EINVAL; 892 } 893 F2FS_OPTION(sbi).write_io_size_bits = arg; 894 break; 895 #ifdef CONFIG_F2FS_FAULT_INJECTION 896 case Opt_fault_injection: 897 if (args->from && match_int(args, &arg)) 898 return -EINVAL; 899 f2fs_build_fault_attr(sbi, arg, F2FS_ALL_FAULT_TYPE); 900 set_opt(sbi, FAULT_INJECTION); 901 break; 902 903 case Opt_fault_type: 904 if (args->from && match_int(args, &arg)) 905 return -EINVAL; 906 f2fs_build_fault_attr(sbi, 0, arg); 907 set_opt(sbi, FAULT_INJECTION); 908 break; 909 #else 910 case Opt_fault_injection: 911 f2fs_info(sbi, "fault_injection options not supported"); 912 break; 913 914 case Opt_fault_type: 915 f2fs_info(sbi, "fault_type options not supported"); 916 break; 917 #endif 918 case Opt_lazytime: 919 sb->s_flags |= SB_LAZYTIME; 920 break; 921 case Opt_nolazytime: 922 sb->s_flags &= ~SB_LAZYTIME; 923 break; 924 #ifdef CONFIG_QUOTA 925 case Opt_quota: 926 case Opt_usrquota: 927 set_opt(sbi, USRQUOTA); 928 break; 929 case Opt_grpquota: 930 set_opt(sbi, GRPQUOTA); 931 break; 932 case Opt_prjquota: 933 set_opt(sbi, PRJQUOTA); 934 break; 935 case Opt_usrjquota: 936 ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]); 937 if (ret) 938 return ret; 939 break; 940 case Opt_grpjquota: 941 ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]); 942 if (ret) 943 return ret; 944 break; 945 case Opt_prjjquota: 946 ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]); 947 if (ret) 948 return ret; 949 break; 950 case Opt_offusrjquota: 951 ret = f2fs_clear_qf_name(sb, USRQUOTA); 952 if (ret) 953 return ret; 954 break; 955 case Opt_offgrpjquota: 956 ret = f2fs_clear_qf_name(sb, GRPQUOTA); 957 if (ret) 958 return ret; 959 break; 960 case Opt_offprjjquota: 961 ret = f2fs_clear_qf_name(sb, PRJQUOTA); 962 if (ret) 963 return ret; 964 break; 965 case Opt_jqfmt_vfsold: 966 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD; 967 break; 968 case Opt_jqfmt_vfsv0: 969 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0; 970 break; 971 case Opt_jqfmt_vfsv1: 972 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1; 973 break; 974 case Opt_noquota: 975 clear_opt(sbi, QUOTA); 976 clear_opt(sbi, USRQUOTA); 977 clear_opt(sbi, GRPQUOTA); 978 clear_opt(sbi, PRJQUOTA); 979 break; 980 #else 981 case Opt_quota: 982 case Opt_usrquota: 983 case Opt_grpquota: 984 case Opt_prjquota: 985 case Opt_usrjquota: 986 case Opt_grpjquota: 987 case Opt_prjjquota: 988 case Opt_offusrjquota: 989 case Opt_offgrpjquota: 990 case Opt_offprjjquota: 991 case Opt_jqfmt_vfsold: 992 case Opt_jqfmt_vfsv0: 993 case Opt_jqfmt_vfsv1: 994 case Opt_noquota: 995 f2fs_info(sbi, "quota operations not supported"); 996 break; 997 #endif 998 case Opt_alloc: 999 name = match_strdup(&args[0]); 1000 if (!name) 1001 return -ENOMEM; 1002 1003 if (!strcmp(name, "default")) { 1004 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT; 1005 } else if (!strcmp(name, "reuse")) { 1006 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE; 1007 } else { 1008 kfree(name); 1009 return -EINVAL; 1010 } 1011 kfree(name); 1012 break; 1013 case Opt_fsync: 1014 name = match_strdup(&args[0]); 1015 if (!name) 1016 return -ENOMEM; 1017 if (!strcmp(name, "posix")) { 1018 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX; 1019 } else if (!strcmp(name, "strict")) { 1020 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT; 1021 } else if (!strcmp(name, "nobarrier")) { 1022 F2FS_OPTION(sbi).fsync_mode = 1023 FSYNC_MODE_NOBARRIER; 1024 } else { 1025 kfree(name); 1026 return -EINVAL; 1027 } 1028 kfree(name); 1029 break; 1030 case Opt_test_dummy_encryption: 1031 ret = f2fs_set_test_dummy_encryption(sb, p, &args[0], 1032 is_remount); 1033 if (ret) 1034 return ret; 1035 break; 1036 case Opt_inlinecrypt: 1037 #ifdef CONFIG_FS_ENCRYPTION_INLINE_CRYPT 1038 sb->s_flags |= SB_INLINECRYPT; 1039 #else 1040 f2fs_info(sbi, "inline encryption not supported"); 1041 #endif 1042 break; 1043 case Opt_checkpoint_disable_cap_perc: 1044 if (args->from && match_int(args, &arg)) 1045 return -EINVAL; 1046 if (arg < 0 || arg > 100) 1047 return -EINVAL; 1048 F2FS_OPTION(sbi).unusable_cap_perc = arg; 1049 set_opt(sbi, DISABLE_CHECKPOINT); 1050 break; 1051 case Opt_checkpoint_disable_cap: 1052 if (args->from && match_int(args, &arg)) 1053 return -EINVAL; 1054 F2FS_OPTION(sbi).unusable_cap = arg; 1055 set_opt(sbi, DISABLE_CHECKPOINT); 1056 break; 1057 case Opt_checkpoint_disable: 1058 set_opt(sbi, DISABLE_CHECKPOINT); 1059 break; 1060 case Opt_checkpoint_enable: 1061 clear_opt(sbi, DISABLE_CHECKPOINT); 1062 break; 1063 case Opt_checkpoint_merge: 1064 set_opt(sbi, MERGE_CHECKPOINT); 1065 break; 1066 case Opt_nocheckpoint_merge: 1067 clear_opt(sbi, MERGE_CHECKPOINT); 1068 break; 1069 #ifdef CONFIG_F2FS_FS_COMPRESSION 1070 case Opt_compress_algorithm: 1071 if (!f2fs_sb_has_compression(sbi)) { 1072 f2fs_info(sbi, "Image doesn't support compression"); 1073 break; 1074 } 1075 name = match_strdup(&args[0]); 1076 if (!name) 1077 return -ENOMEM; 1078 if (!strcmp(name, "lzo")) { 1079 #ifdef CONFIG_F2FS_FS_LZO 1080 F2FS_OPTION(sbi).compress_level = 0; 1081 F2FS_OPTION(sbi).compress_algorithm = 1082 COMPRESS_LZO; 1083 #else 1084 f2fs_info(sbi, "kernel doesn't support lzo compression"); 1085 #endif 1086 } else if (!strncmp(name, "lz4", 3)) { 1087 #ifdef CONFIG_F2FS_FS_LZ4 1088 ret = f2fs_set_lz4hc_level(sbi, name); 1089 if (ret) { 1090 kfree(name); 1091 return -EINVAL; 1092 } 1093 F2FS_OPTION(sbi).compress_algorithm = 1094 COMPRESS_LZ4; 1095 #else 1096 f2fs_info(sbi, "kernel doesn't support lz4 compression"); 1097 #endif 1098 } else if (!strncmp(name, "zstd", 4)) { 1099 #ifdef CONFIG_F2FS_FS_ZSTD 1100 ret = f2fs_set_zstd_level(sbi, name); 1101 if (ret) { 1102 kfree(name); 1103 return -EINVAL; 1104 } 1105 F2FS_OPTION(sbi).compress_algorithm = 1106 COMPRESS_ZSTD; 1107 #else 1108 f2fs_info(sbi, "kernel doesn't support zstd compression"); 1109 #endif 1110 } else if (!strcmp(name, "lzo-rle")) { 1111 #ifdef CONFIG_F2FS_FS_LZORLE 1112 F2FS_OPTION(sbi).compress_level = 0; 1113 F2FS_OPTION(sbi).compress_algorithm = 1114 COMPRESS_LZORLE; 1115 #else 1116 f2fs_info(sbi, "kernel doesn't support lzorle compression"); 1117 #endif 1118 } else { 1119 kfree(name); 1120 return -EINVAL; 1121 } 1122 kfree(name); 1123 break; 1124 case Opt_compress_log_size: 1125 if (!f2fs_sb_has_compression(sbi)) { 1126 f2fs_info(sbi, "Image doesn't support compression"); 1127 break; 1128 } 1129 if (args->from && match_int(args, &arg)) 1130 return -EINVAL; 1131 if (arg < MIN_COMPRESS_LOG_SIZE || 1132 arg > MAX_COMPRESS_LOG_SIZE) { 1133 f2fs_err(sbi, 1134 "Compress cluster log size is out of range"); 1135 return -EINVAL; 1136 } 1137 F2FS_OPTION(sbi).compress_log_size = arg; 1138 break; 1139 case Opt_compress_extension: 1140 if (!f2fs_sb_has_compression(sbi)) { 1141 f2fs_info(sbi, "Image doesn't support compression"); 1142 break; 1143 } 1144 name = match_strdup(&args[0]); 1145 if (!name) 1146 return -ENOMEM; 1147 1148 ext = F2FS_OPTION(sbi).extensions; 1149 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt; 1150 1151 if (strlen(name) >= F2FS_EXTENSION_LEN || 1152 ext_cnt >= COMPRESS_EXT_NUM) { 1153 f2fs_err(sbi, 1154 "invalid extension length/number"); 1155 kfree(name); 1156 return -EINVAL; 1157 } 1158 1159 strcpy(ext[ext_cnt], name); 1160 F2FS_OPTION(sbi).compress_ext_cnt++; 1161 kfree(name); 1162 break; 1163 case Opt_nocompress_extension: 1164 if (!f2fs_sb_has_compression(sbi)) { 1165 f2fs_info(sbi, "Image doesn't support compression"); 1166 break; 1167 } 1168 name = match_strdup(&args[0]); 1169 if (!name) 1170 return -ENOMEM; 1171 1172 noext = F2FS_OPTION(sbi).noextensions; 1173 noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt; 1174 1175 if (strlen(name) >= F2FS_EXTENSION_LEN || 1176 noext_cnt >= COMPRESS_EXT_NUM) { 1177 f2fs_err(sbi, 1178 "invalid extension length/number"); 1179 kfree(name); 1180 return -EINVAL; 1181 } 1182 1183 strcpy(noext[noext_cnt], name); 1184 F2FS_OPTION(sbi).nocompress_ext_cnt++; 1185 kfree(name); 1186 break; 1187 case Opt_compress_chksum: 1188 F2FS_OPTION(sbi).compress_chksum = true; 1189 break; 1190 case Opt_compress_mode: 1191 name = match_strdup(&args[0]); 1192 if (!name) 1193 return -ENOMEM; 1194 if (!strcmp(name, "fs")) { 1195 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS; 1196 } else if (!strcmp(name, "user")) { 1197 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_USER; 1198 } else { 1199 kfree(name); 1200 return -EINVAL; 1201 } 1202 kfree(name); 1203 break; 1204 case Opt_compress_cache: 1205 set_opt(sbi, COMPRESS_CACHE); 1206 break; 1207 #else 1208 case Opt_compress_algorithm: 1209 case Opt_compress_log_size: 1210 case Opt_compress_extension: 1211 case Opt_nocompress_extension: 1212 case Opt_compress_chksum: 1213 case Opt_compress_mode: 1214 case Opt_compress_cache: 1215 f2fs_info(sbi, "compression options not supported"); 1216 break; 1217 #endif 1218 case Opt_atgc: 1219 set_opt(sbi, ATGC); 1220 break; 1221 case Opt_gc_merge: 1222 set_opt(sbi, GC_MERGE); 1223 break; 1224 case Opt_nogc_merge: 1225 clear_opt(sbi, GC_MERGE); 1226 break; 1227 case Opt_discard_unit: 1228 name = match_strdup(&args[0]); 1229 if (!name) 1230 return -ENOMEM; 1231 if (!strcmp(name, "block")) { 1232 F2FS_OPTION(sbi).discard_unit = 1233 DISCARD_UNIT_BLOCK; 1234 } else if (!strcmp(name, "segment")) { 1235 F2FS_OPTION(sbi).discard_unit = 1236 DISCARD_UNIT_SEGMENT; 1237 } else if (!strcmp(name, "section")) { 1238 F2FS_OPTION(sbi).discard_unit = 1239 DISCARD_UNIT_SECTION; 1240 } else { 1241 kfree(name); 1242 return -EINVAL; 1243 } 1244 kfree(name); 1245 break; 1246 case Opt_memory_mode: 1247 name = match_strdup(&args[0]); 1248 if (!name) 1249 return -ENOMEM; 1250 if (!strcmp(name, "normal")) { 1251 F2FS_OPTION(sbi).memory_mode = 1252 MEMORY_MODE_NORMAL; 1253 } else if (!strcmp(name, "low")) { 1254 F2FS_OPTION(sbi).memory_mode = 1255 MEMORY_MODE_LOW; 1256 } else { 1257 kfree(name); 1258 return -EINVAL; 1259 } 1260 kfree(name); 1261 break; 1262 case Opt_age_extent_cache: 1263 set_opt(sbi, AGE_EXTENT_CACHE); 1264 break; 1265 default: 1266 f2fs_err(sbi, "Unrecognized mount option \"%s\" or missing value", 1267 p); 1268 return -EINVAL; 1269 } 1270 } 1271 default_check: 1272 #ifdef CONFIG_QUOTA 1273 if (f2fs_check_quota_options(sbi)) 1274 return -EINVAL; 1275 #else 1276 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sbi->sb)) { 1277 f2fs_info(sbi, "Filesystem with quota feature cannot be mounted RDWR without CONFIG_QUOTA"); 1278 return -EINVAL; 1279 } 1280 if (f2fs_sb_has_project_quota(sbi) && !f2fs_readonly(sbi->sb)) { 1281 f2fs_err(sbi, "Filesystem with project quota feature cannot be mounted RDWR without CONFIG_QUOTA"); 1282 return -EINVAL; 1283 } 1284 #endif 1285 #if !IS_ENABLED(CONFIG_UNICODE) 1286 if (f2fs_sb_has_casefold(sbi)) { 1287 f2fs_err(sbi, 1288 "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE"); 1289 return -EINVAL; 1290 } 1291 #endif 1292 /* 1293 * The BLKZONED feature indicates that the drive was formatted with 1294 * zone alignment optimization. This is optional for host-aware 1295 * devices, but mandatory for host-managed zoned block devices. 1296 */ 1297 #ifndef CONFIG_BLK_DEV_ZONED 1298 if (f2fs_sb_has_blkzoned(sbi)) { 1299 f2fs_err(sbi, "Zoned block device support is not enabled"); 1300 return -EINVAL; 1301 } 1302 #endif 1303 if (f2fs_sb_has_blkzoned(sbi)) { 1304 if (F2FS_OPTION(sbi).discard_unit != 1305 DISCARD_UNIT_SECTION) { 1306 f2fs_info(sbi, "Zoned block device doesn't need small discard, set discard_unit=section by default"); 1307 F2FS_OPTION(sbi).discard_unit = 1308 DISCARD_UNIT_SECTION; 1309 } 1310 } 1311 1312 #ifdef CONFIG_F2FS_FS_COMPRESSION 1313 if (f2fs_test_compress_extension(sbi)) { 1314 f2fs_err(sbi, "invalid compress or nocompress extension"); 1315 return -EINVAL; 1316 } 1317 #endif 1318 1319 if (F2FS_IO_SIZE_BITS(sbi) && !f2fs_lfs_mode(sbi)) { 1320 f2fs_err(sbi, "Should set mode=lfs with %uKB-sized IO", 1321 F2FS_IO_SIZE_KB(sbi)); 1322 return -EINVAL; 1323 } 1324 1325 if (test_opt(sbi, INLINE_XATTR_SIZE)) { 1326 int min_size, max_size; 1327 1328 if (!f2fs_sb_has_extra_attr(sbi) || 1329 !f2fs_sb_has_flexible_inline_xattr(sbi)) { 1330 f2fs_err(sbi, "extra_attr or flexible_inline_xattr feature is off"); 1331 return -EINVAL; 1332 } 1333 if (!test_opt(sbi, INLINE_XATTR)) { 1334 f2fs_err(sbi, "inline_xattr_size option should be set with inline_xattr option"); 1335 return -EINVAL; 1336 } 1337 1338 min_size = sizeof(struct f2fs_xattr_header) / sizeof(__le32); 1339 max_size = MAX_INLINE_XATTR_SIZE; 1340 1341 if (F2FS_OPTION(sbi).inline_xattr_size < min_size || 1342 F2FS_OPTION(sbi).inline_xattr_size > max_size) { 1343 f2fs_err(sbi, "inline xattr size is out of range: %d ~ %d", 1344 min_size, max_size); 1345 return -EINVAL; 1346 } 1347 } 1348 1349 if (test_opt(sbi, DISABLE_CHECKPOINT) && f2fs_lfs_mode(sbi)) { 1350 f2fs_err(sbi, "LFS not compatible with checkpoint=disable"); 1351 return -EINVAL; 1352 } 1353 1354 if (test_opt(sbi, ATGC) && f2fs_lfs_mode(sbi)) { 1355 f2fs_err(sbi, "LFS not compatible with ATGC"); 1356 return -EINVAL; 1357 } 1358 1359 if (f2fs_is_readonly(sbi) && test_opt(sbi, FLUSH_MERGE)) { 1360 f2fs_err(sbi, "FLUSH_MERGE not compatible with readonly mode"); 1361 return -EINVAL; 1362 } 1363 1364 if (f2fs_sb_has_readonly(sbi) && !f2fs_readonly(sbi->sb)) { 1365 f2fs_err(sbi, "Allow to mount readonly mode only"); 1366 return -EROFS; 1367 } 1368 return 0; 1369 } 1370 1371 static struct inode *f2fs_alloc_inode(struct super_block *sb) 1372 { 1373 struct f2fs_inode_info *fi; 1374 1375 if (time_to_inject(F2FS_SB(sb), FAULT_SLAB_ALLOC)) { 1376 f2fs_show_injection_info(F2FS_SB(sb), FAULT_SLAB_ALLOC); 1377 return NULL; 1378 } 1379 1380 fi = alloc_inode_sb(sb, f2fs_inode_cachep, GFP_F2FS_ZERO); 1381 if (!fi) 1382 return NULL; 1383 1384 init_once((void *) fi); 1385 1386 /* Initialize f2fs-specific inode info */ 1387 atomic_set(&fi->dirty_pages, 0); 1388 atomic_set(&fi->i_compr_blocks, 0); 1389 init_f2fs_rwsem(&fi->i_sem); 1390 spin_lock_init(&fi->i_size_lock); 1391 INIT_LIST_HEAD(&fi->dirty_list); 1392 INIT_LIST_HEAD(&fi->gdirty_list); 1393 init_f2fs_rwsem(&fi->i_gc_rwsem[READ]); 1394 init_f2fs_rwsem(&fi->i_gc_rwsem[WRITE]); 1395 init_f2fs_rwsem(&fi->i_xattr_sem); 1396 1397 /* Will be used by directory only */ 1398 fi->i_dir_level = F2FS_SB(sb)->dir_level; 1399 1400 return &fi->vfs_inode; 1401 } 1402 1403 static int f2fs_drop_inode(struct inode *inode) 1404 { 1405 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1406 int ret; 1407 1408 /* 1409 * during filesystem shutdown, if checkpoint is disabled, 1410 * drop useless meta/node dirty pages. 1411 */ 1412 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) { 1413 if (inode->i_ino == F2FS_NODE_INO(sbi) || 1414 inode->i_ino == F2FS_META_INO(sbi)) { 1415 trace_f2fs_drop_inode(inode, 1); 1416 return 1; 1417 } 1418 } 1419 1420 /* 1421 * This is to avoid a deadlock condition like below. 1422 * writeback_single_inode(inode) 1423 * - f2fs_write_data_page 1424 * - f2fs_gc -> iput -> evict 1425 * - inode_wait_for_writeback(inode) 1426 */ 1427 if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) { 1428 if (!inode->i_nlink && !is_bad_inode(inode)) { 1429 /* to avoid evict_inode call simultaneously */ 1430 atomic_inc(&inode->i_count); 1431 spin_unlock(&inode->i_lock); 1432 1433 f2fs_abort_atomic_write(inode, true); 1434 1435 /* should remain fi->extent_tree for writepage */ 1436 f2fs_destroy_extent_node(inode); 1437 1438 sb_start_intwrite(inode->i_sb); 1439 f2fs_i_size_write(inode, 0); 1440 1441 f2fs_submit_merged_write_cond(F2FS_I_SB(inode), 1442 inode, NULL, 0, DATA); 1443 truncate_inode_pages_final(inode->i_mapping); 1444 1445 if (F2FS_HAS_BLOCKS(inode)) 1446 f2fs_truncate(inode); 1447 1448 sb_end_intwrite(inode->i_sb); 1449 1450 spin_lock(&inode->i_lock); 1451 atomic_dec(&inode->i_count); 1452 } 1453 trace_f2fs_drop_inode(inode, 0); 1454 return 0; 1455 } 1456 ret = generic_drop_inode(inode); 1457 if (!ret) 1458 ret = fscrypt_drop_inode(inode); 1459 trace_f2fs_drop_inode(inode, ret); 1460 return ret; 1461 } 1462 1463 int f2fs_inode_dirtied(struct inode *inode, bool sync) 1464 { 1465 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1466 int ret = 0; 1467 1468 spin_lock(&sbi->inode_lock[DIRTY_META]); 1469 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) { 1470 ret = 1; 1471 } else { 1472 set_inode_flag(inode, FI_DIRTY_INODE); 1473 stat_inc_dirty_inode(sbi, DIRTY_META); 1474 } 1475 if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) { 1476 list_add_tail(&F2FS_I(inode)->gdirty_list, 1477 &sbi->inode_list[DIRTY_META]); 1478 inc_page_count(sbi, F2FS_DIRTY_IMETA); 1479 } 1480 spin_unlock(&sbi->inode_lock[DIRTY_META]); 1481 return ret; 1482 } 1483 1484 void f2fs_inode_synced(struct inode *inode) 1485 { 1486 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1487 1488 spin_lock(&sbi->inode_lock[DIRTY_META]); 1489 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) { 1490 spin_unlock(&sbi->inode_lock[DIRTY_META]); 1491 return; 1492 } 1493 if (!list_empty(&F2FS_I(inode)->gdirty_list)) { 1494 list_del_init(&F2FS_I(inode)->gdirty_list); 1495 dec_page_count(sbi, F2FS_DIRTY_IMETA); 1496 } 1497 clear_inode_flag(inode, FI_DIRTY_INODE); 1498 clear_inode_flag(inode, FI_AUTO_RECOVER); 1499 stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META); 1500 spin_unlock(&sbi->inode_lock[DIRTY_META]); 1501 } 1502 1503 /* 1504 * f2fs_dirty_inode() is called from __mark_inode_dirty() 1505 * 1506 * We should call set_dirty_inode to write the dirty inode through write_inode. 1507 */ 1508 static void f2fs_dirty_inode(struct inode *inode, int flags) 1509 { 1510 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1511 1512 if (inode->i_ino == F2FS_NODE_INO(sbi) || 1513 inode->i_ino == F2FS_META_INO(sbi)) 1514 return; 1515 1516 if (is_inode_flag_set(inode, FI_AUTO_RECOVER)) 1517 clear_inode_flag(inode, FI_AUTO_RECOVER); 1518 1519 f2fs_inode_dirtied(inode, false); 1520 } 1521 1522 static void f2fs_free_inode(struct inode *inode) 1523 { 1524 fscrypt_free_inode(inode); 1525 kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode)); 1526 } 1527 1528 static void destroy_percpu_info(struct f2fs_sb_info *sbi) 1529 { 1530 percpu_counter_destroy(&sbi->total_valid_inode_count); 1531 percpu_counter_destroy(&sbi->rf_node_block_count); 1532 percpu_counter_destroy(&sbi->alloc_valid_block_count); 1533 } 1534 1535 static void destroy_device_list(struct f2fs_sb_info *sbi) 1536 { 1537 int i; 1538 1539 for (i = 0; i < sbi->s_ndevs; i++) { 1540 blkdev_put(FDEV(i).bdev, FMODE_EXCL); 1541 #ifdef CONFIG_BLK_DEV_ZONED 1542 kvfree(FDEV(i).blkz_seq); 1543 #endif 1544 } 1545 kvfree(sbi->devs); 1546 } 1547 1548 static void f2fs_put_super(struct super_block *sb) 1549 { 1550 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1551 int i; 1552 bool dropped; 1553 1554 /* unregister procfs/sysfs entries in advance to avoid race case */ 1555 f2fs_unregister_sysfs(sbi); 1556 1557 f2fs_quota_off_umount(sb); 1558 1559 /* prevent remaining shrinker jobs */ 1560 mutex_lock(&sbi->umount_mutex); 1561 1562 /* 1563 * flush all issued checkpoints and stop checkpoint issue thread. 1564 * after then, all checkpoints should be done by each process context. 1565 */ 1566 f2fs_stop_ckpt_thread(sbi); 1567 1568 /* 1569 * We don't need to do checkpoint when superblock is clean. 1570 * But, the previous checkpoint was not done by umount, it needs to do 1571 * clean checkpoint again. 1572 */ 1573 if ((is_sbi_flag_set(sbi, SBI_IS_DIRTY) || 1574 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))) { 1575 struct cp_control cpc = { 1576 .reason = CP_UMOUNT, 1577 }; 1578 f2fs_write_checkpoint(sbi, &cpc); 1579 } 1580 1581 /* be sure to wait for any on-going discard commands */ 1582 dropped = f2fs_issue_discard_timeout(sbi); 1583 1584 if (f2fs_realtime_discard_enable(sbi) && !sbi->discard_blks && !dropped) { 1585 struct cp_control cpc = { 1586 .reason = CP_UMOUNT | CP_TRIMMED, 1587 }; 1588 f2fs_write_checkpoint(sbi, &cpc); 1589 } 1590 1591 /* 1592 * normally superblock is clean, so we need to release this. 1593 * In addition, EIO will skip do checkpoint, we need this as well. 1594 */ 1595 f2fs_release_ino_entry(sbi, true); 1596 1597 f2fs_leave_shrinker(sbi); 1598 mutex_unlock(&sbi->umount_mutex); 1599 1600 /* our cp_error case, we can wait for any writeback page */ 1601 f2fs_flush_merged_writes(sbi); 1602 1603 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA); 1604 1605 f2fs_bug_on(sbi, sbi->fsync_node_num); 1606 1607 f2fs_destroy_compress_inode(sbi); 1608 1609 iput(sbi->node_inode); 1610 sbi->node_inode = NULL; 1611 1612 iput(sbi->meta_inode); 1613 sbi->meta_inode = NULL; 1614 1615 /* 1616 * iput() can update stat information, if f2fs_write_checkpoint() 1617 * above failed with error. 1618 */ 1619 f2fs_destroy_stats(sbi); 1620 1621 /* destroy f2fs internal modules */ 1622 f2fs_destroy_node_manager(sbi); 1623 f2fs_destroy_segment_manager(sbi); 1624 1625 f2fs_destroy_post_read_wq(sbi); 1626 1627 kvfree(sbi->ckpt); 1628 1629 sb->s_fs_info = NULL; 1630 if (sbi->s_chksum_driver) 1631 crypto_free_shash(sbi->s_chksum_driver); 1632 kfree(sbi->raw_super); 1633 1634 destroy_device_list(sbi); 1635 f2fs_destroy_page_array_cache(sbi); 1636 f2fs_destroy_xattr_caches(sbi); 1637 mempool_destroy(sbi->write_io_dummy); 1638 #ifdef CONFIG_QUOTA 1639 for (i = 0; i < MAXQUOTAS; i++) 1640 kfree(F2FS_OPTION(sbi).s_qf_names[i]); 1641 #endif 1642 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy); 1643 destroy_percpu_info(sbi); 1644 f2fs_destroy_iostat(sbi); 1645 for (i = 0; i < NR_PAGE_TYPE; i++) 1646 kvfree(sbi->write_io[i]); 1647 #if IS_ENABLED(CONFIG_UNICODE) 1648 utf8_unload(sb->s_encoding); 1649 #endif 1650 kfree(sbi); 1651 } 1652 1653 int f2fs_sync_fs(struct super_block *sb, int sync) 1654 { 1655 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1656 int err = 0; 1657 1658 if (unlikely(f2fs_cp_error(sbi))) 1659 return 0; 1660 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) 1661 return 0; 1662 1663 trace_f2fs_sync_fs(sb, sync); 1664 1665 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 1666 return -EAGAIN; 1667 1668 if (sync) 1669 err = f2fs_issue_checkpoint(sbi); 1670 1671 return err; 1672 } 1673 1674 static int f2fs_freeze(struct super_block *sb) 1675 { 1676 if (f2fs_readonly(sb)) 1677 return 0; 1678 1679 /* IO error happened before */ 1680 if (unlikely(f2fs_cp_error(F2FS_SB(sb)))) 1681 return -EIO; 1682 1683 /* must be clean, since sync_filesystem() was already called */ 1684 if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY)) 1685 return -EINVAL; 1686 1687 /* Let's flush checkpoints and stop the thread. */ 1688 f2fs_flush_ckpt_thread(F2FS_SB(sb)); 1689 1690 /* to avoid deadlock on f2fs_evict_inode->SB_FREEZE_FS */ 1691 set_sbi_flag(F2FS_SB(sb), SBI_IS_FREEZING); 1692 return 0; 1693 } 1694 1695 static int f2fs_unfreeze(struct super_block *sb) 1696 { 1697 clear_sbi_flag(F2FS_SB(sb), SBI_IS_FREEZING); 1698 return 0; 1699 } 1700 1701 #ifdef CONFIG_QUOTA 1702 static int f2fs_statfs_project(struct super_block *sb, 1703 kprojid_t projid, struct kstatfs *buf) 1704 { 1705 struct kqid qid; 1706 struct dquot *dquot; 1707 u64 limit; 1708 u64 curblock; 1709 1710 qid = make_kqid_projid(projid); 1711 dquot = dqget(sb, qid); 1712 if (IS_ERR(dquot)) 1713 return PTR_ERR(dquot); 1714 spin_lock(&dquot->dq_dqb_lock); 1715 1716 limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit, 1717 dquot->dq_dqb.dqb_bhardlimit); 1718 if (limit) 1719 limit >>= sb->s_blocksize_bits; 1720 1721 if (limit && buf->f_blocks > limit) { 1722 curblock = (dquot->dq_dqb.dqb_curspace + 1723 dquot->dq_dqb.dqb_rsvspace) >> sb->s_blocksize_bits; 1724 buf->f_blocks = limit; 1725 buf->f_bfree = buf->f_bavail = 1726 (buf->f_blocks > curblock) ? 1727 (buf->f_blocks - curblock) : 0; 1728 } 1729 1730 limit = min_not_zero(dquot->dq_dqb.dqb_isoftlimit, 1731 dquot->dq_dqb.dqb_ihardlimit); 1732 1733 if (limit && buf->f_files > limit) { 1734 buf->f_files = limit; 1735 buf->f_ffree = 1736 (buf->f_files > dquot->dq_dqb.dqb_curinodes) ? 1737 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0; 1738 } 1739 1740 spin_unlock(&dquot->dq_dqb_lock); 1741 dqput(dquot); 1742 return 0; 1743 } 1744 #endif 1745 1746 static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf) 1747 { 1748 struct super_block *sb = dentry->d_sb; 1749 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1750 u64 id = huge_encode_dev(sb->s_bdev->bd_dev); 1751 block_t total_count, user_block_count, start_count; 1752 u64 avail_node_count; 1753 unsigned int total_valid_node_count; 1754 1755 total_count = le64_to_cpu(sbi->raw_super->block_count); 1756 start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr); 1757 buf->f_type = F2FS_SUPER_MAGIC; 1758 buf->f_bsize = sbi->blocksize; 1759 1760 buf->f_blocks = total_count - start_count; 1761 1762 spin_lock(&sbi->stat_lock); 1763 1764 user_block_count = sbi->user_block_count; 1765 total_valid_node_count = valid_node_count(sbi); 1766 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM; 1767 buf->f_bfree = user_block_count - valid_user_blocks(sbi) - 1768 sbi->current_reserved_blocks; 1769 1770 if (unlikely(buf->f_bfree <= sbi->unusable_block_count)) 1771 buf->f_bfree = 0; 1772 else 1773 buf->f_bfree -= sbi->unusable_block_count; 1774 spin_unlock(&sbi->stat_lock); 1775 1776 if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks) 1777 buf->f_bavail = buf->f_bfree - 1778 F2FS_OPTION(sbi).root_reserved_blocks; 1779 else 1780 buf->f_bavail = 0; 1781 1782 if (avail_node_count > user_block_count) { 1783 buf->f_files = user_block_count; 1784 buf->f_ffree = buf->f_bavail; 1785 } else { 1786 buf->f_files = avail_node_count; 1787 buf->f_ffree = min(avail_node_count - total_valid_node_count, 1788 buf->f_bavail); 1789 } 1790 1791 buf->f_namelen = F2FS_NAME_LEN; 1792 buf->f_fsid = u64_to_fsid(id); 1793 1794 #ifdef CONFIG_QUOTA 1795 if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) && 1796 sb_has_quota_limits_enabled(sb, PRJQUOTA)) { 1797 f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf); 1798 } 1799 #endif 1800 return 0; 1801 } 1802 1803 static inline void f2fs_show_quota_options(struct seq_file *seq, 1804 struct super_block *sb) 1805 { 1806 #ifdef CONFIG_QUOTA 1807 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1808 1809 if (F2FS_OPTION(sbi).s_jquota_fmt) { 1810 char *fmtname = ""; 1811 1812 switch (F2FS_OPTION(sbi).s_jquota_fmt) { 1813 case QFMT_VFS_OLD: 1814 fmtname = "vfsold"; 1815 break; 1816 case QFMT_VFS_V0: 1817 fmtname = "vfsv0"; 1818 break; 1819 case QFMT_VFS_V1: 1820 fmtname = "vfsv1"; 1821 break; 1822 } 1823 seq_printf(seq, ",jqfmt=%s", fmtname); 1824 } 1825 1826 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA]) 1827 seq_show_option(seq, "usrjquota", 1828 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]); 1829 1830 if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]) 1831 seq_show_option(seq, "grpjquota", 1832 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]); 1833 1834 if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) 1835 seq_show_option(seq, "prjjquota", 1836 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]); 1837 #endif 1838 } 1839 1840 #ifdef CONFIG_F2FS_FS_COMPRESSION 1841 static inline void f2fs_show_compress_options(struct seq_file *seq, 1842 struct super_block *sb) 1843 { 1844 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1845 char *algtype = ""; 1846 int i; 1847 1848 if (!f2fs_sb_has_compression(sbi)) 1849 return; 1850 1851 switch (F2FS_OPTION(sbi).compress_algorithm) { 1852 case COMPRESS_LZO: 1853 algtype = "lzo"; 1854 break; 1855 case COMPRESS_LZ4: 1856 algtype = "lz4"; 1857 break; 1858 case COMPRESS_ZSTD: 1859 algtype = "zstd"; 1860 break; 1861 case COMPRESS_LZORLE: 1862 algtype = "lzo-rle"; 1863 break; 1864 } 1865 seq_printf(seq, ",compress_algorithm=%s", algtype); 1866 1867 if (F2FS_OPTION(sbi).compress_level) 1868 seq_printf(seq, ":%d", F2FS_OPTION(sbi).compress_level); 1869 1870 seq_printf(seq, ",compress_log_size=%u", 1871 F2FS_OPTION(sbi).compress_log_size); 1872 1873 for (i = 0; i < F2FS_OPTION(sbi).compress_ext_cnt; i++) { 1874 seq_printf(seq, ",compress_extension=%s", 1875 F2FS_OPTION(sbi).extensions[i]); 1876 } 1877 1878 for (i = 0; i < F2FS_OPTION(sbi).nocompress_ext_cnt; i++) { 1879 seq_printf(seq, ",nocompress_extension=%s", 1880 F2FS_OPTION(sbi).noextensions[i]); 1881 } 1882 1883 if (F2FS_OPTION(sbi).compress_chksum) 1884 seq_puts(seq, ",compress_chksum"); 1885 1886 if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_FS) 1887 seq_printf(seq, ",compress_mode=%s", "fs"); 1888 else if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_USER) 1889 seq_printf(seq, ",compress_mode=%s", "user"); 1890 1891 if (test_opt(sbi, COMPRESS_CACHE)) 1892 seq_puts(seq, ",compress_cache"); 1893 } 1894 #endif 1895 1896 static int f2fs_show_options(struct seq_file *seq, struct dentry *root) 1897 { 1898 struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb); 1899 1900 if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_SYNC) 1901 seq_printf(seq, ",background_gc=%s", "sync"); 1902 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_ON) 1903 seq_printf(seq, ",background_gc=%s", "on"); 1904 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF) 1905 seq_printf(seq, ",background_gc=%s", "off"); 1906 1907 if (test_opt(sbi, GC_MERGE)) 1908 seq_puts(seq, ",gc_merge"); 1909 1910 if (test_opt(sbi, DISABLE_ROLL_FORWARD)) 1911 seq_puts(seq, ",disable_roll_forward"); 1912 if (test_opt(sbi, NORECOVERY)) 1913 seq_puts(seq, ",norecovery"); 1914 if (test_opt(sbi, DISCARD)) 1915 seq_puts(seq, ",discard"); 1916 else 1917 seq_puts(seq, ",nodiscard"); 1918 if (test_opt(sbi, NOHEAP)) 1919 seq_puts(seq, ",no_heap"); 1920 else 1921 seq_puts(seq, ",heap"); 1922 #ifdef CONFIG_F2FS_FS_XATTR 1923 if (test_opt(sbi, XATTR_USER)) 1924 seq_puts(seq, ",user_xattr"); 1925 else 1926 seq_puts(seq, ",nouser_xattr"); 1927 if (test_opt(sbi, INLINE_XATTR)) 1928 seq_puts(seq, ",inline_xattr"); 1929 else 1930 seq_puts(seq, ",noinline_xattr"); 1931 if (test_opt(sbi, INLINE_XATTR_SIZE)) 1932 seq_printf(seq, ",inline_xattr_size=%u", 1933 F2FS_OPTION(sbi).inline_xattr_size); 1934 #endif 1935 #ifdef CONFIG_F2FS_FS_POSIX_ACL 1936 if (test_opt(sbi, POSIX_ACL)) 1937 seq_puts(seq, ",acl"); 1938 else 1939 seq_puts(seq, ",noacl"); 1940 #endif 1941 if (test_opt(sbi, DISABLE_EXT_IDENTIFY)) 1942 seq_puts(seq, ",disable_ext_identify"); 1943 if (test_opt(sbi, INLINE_DATA)) 1944 seq_puts(seq, ",inline_data"); 1945 else 1946 seq_puts(seq, ",noinline_data"); 1947 if (test_opt(sbi, INLINE_DENTRY)) 1948 seq_puts(seq, ",inline_dentry"); 1949 else 1950 seq_puts(seq, ",noinline_dentry"); 1951 if (test_opt(sbi, FLUSH_MERGE)) 1952 seq_puts(seq, ",flush_merge"); 1953 else 1954 seq_puts(seq, ",noflush_merge"); 1955 if (test_opt(sbi, NOBARRIER)) 1956 seq_puts(seq, ",nobarrier"); 1957 else 1958 seq_puts(seq, ",barrier"); 1959 if (test_opt(sbi, FASTBOOT)) 1960 seq_puts(seq, ",fastboot"); 1961 if (test_opt(sbi, READ_EXTENT_CACHE)) 1962 seq_puts(seq, ",extent_cache"); 1963 else 1964 seq_puts(seq, ",noextent_cache"); 1965 if (test_opt(sbi, AGE_EXTENT_CACHE)) 1966 seq_puts(seq, ",age_extent_cache"); 1967 if (test_opt(sbi, DATA_FLUSH)) 1968 seq_puts(seq, ",data_flush"); 1969 1970 seq_puts(seq, ",mode="); 1971 if (F2FS_OPTION(sbi).fs_mode == FS_MODE_ADAPTIVE) 1972 seq_puts(seq, "adaptive"); 1973 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_LFS) 1974 seq_puts(seq, "lfs"); 1975 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_SEG) 1976 seq_puts(seq, "fragment:segment"); 1977 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_BLK) 1978 seq_puts(seq, "fragment:block"); 1979 seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs); 1980 if (test_opt(sbi, RESERVE_ROOT)) 1981 seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u", 1982 F2FS_OPTION(sbi).root_reserved_blocks, 1983 from_kuid_munged(&init_user_ns, 1984 F2FS_OPTION(sbi).s_resuid), 1985 from_kgid_munged(&init_user_ns, 1986 F2FS_OPTION(sbi).s_resgid)); 1987 if (F2FS_IO_SIZE_BITS(sbi)) 1988 seq_printf(seq, ",io_bits=%u", 1989 F2FS_OPTION(sbi).write_io_size_bits); 1990 #ifdef CONFIG_F2FS_FAULT_INJECTION 1991 if (test_opt(sbi, FAULT_INJECTION)) { 1992 seq_printf(seq, ",fault_injection=%u", 1993 F2FS_OPTION(sbi).fault_info.inject_rate); 1994 seq_printf(seq, ",fault_type=%u", 1995 F2FS_OPTION(sbi).fault_info.inject_type); 1996 } 1997 #endif 1998 #ifdef CONFIG_QUOTA 1999 if (test_opt(sbi, QUOTA)) 2000 seq_puts(seq, ",quota"); 2001 if (test_opt(sbi, USRQUOTA)) 2002 seq_puts(seq, ",usrquota"); 2003 if (test_opt(sbi, GRPQUOTA)) 2004 seq_puts(seq, ",grpquota"); 2005 if (test_opt(sbi, PRJQUOTA)) 2006 seq_puts(seq, ",prjquota"); 2007 #endif 2008 f2fs_show_quota_options(seq, sbi->sb); 2009 2010 fscrypt_show_test_dummy_encryption(seq, ',', sbi->sb); 2011 2012 if (sbi->sb->s_flags & SB_INLINECRYPT) 2013 seq_puts(seq, ",inlinecrypt"); 2014 2015 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT) 2016 seq_printf(seq, ",alloc_mode=%s", "default"); 2017 else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE) 2018 seq_printf(seq, ",alloc_mode=%s", "reuse"); 2019 2020 if (test_opt(sbi, DISABLE_CHECKPOINT)) 2021 seq_printf(seq, ",checkpoint=disable:%u", 2022 F2FS_OPTION(sbi).unusable_cap); 2023 if (test_opt(sbi, MERGE_CHECKPOINT)) 2024 seq_puts(seq, ",checkpoint_merge"); 2025 else 2026 seq_puts(seq, ",nocheckpoint_merge"); 2027 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX) 2028 seq_printf(seq, ",fsync_mode=%s", "posix"); 2029 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) 2030 seq_printf(seq, ",fsync_mode=%s", "strict"); 2031 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER) 2032 seq_printf(seq, ",fsync_mode=%s", "nobarrier"); 2033 2034 #ifdef CONFIG_F2FS_FS_COMPRESSION 2035 f2fs_show_compress_options(seq, sbi->sb); 2036 #endif 2037 2038 if (test_opt(sbi, ATGC)) 2039 seq_puts(seq, ",atgc"); 2040 2041 if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_BLOCK) 2042 seq_printf(seq, ",discard_unit=%s", "block"); 2043 else if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SEGMENT) 2044 seq_printf(seq, ",discard_unit=%s", "segment"); 2045 else if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SECTION) 2046 seq_printf(seq, ",discard_unit=%s", "section"); 2047 2048 if (F2FS_OPTION(sbi).memory_mode == MEMORY_MODE_NORMAL) 2049 seq_printf(seq, ",memory=%s", "normal"); 2050 else if (F2FS_OPTION(sbi).memory_mode == MEMORY_MODE_LOW) 2051 seq_printf(seq, ",memory=%s", "low"); 2052 2053 return 0; 2054 } 2055 2056 static void default_options(struct f2fs_sb_info *sbi) 2057 { 2058 /* init some FS parameters */ 2059 if (f2fs_sb_has_readonly(sbi)) 2060 F2FS_OPTION(sbi).active_logs = NR_CURSEG_RO_TYPE; 2061 else 2062 F2FS_OPTION(sbi).active_logs = NR_CURSEG_PERSIST_TYPE; 2063 2064 F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS; 2065 if (le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_main) <= 2066 SMALL_VOLUME_SEGMENTS) 2067 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE; 2068 else 2069 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT; 2070 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX; 2071 F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID); 2072 F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID); 2073 F2FS_OPTION(sbi).compress_algorithm = COMPRESS_LZ4; 2074 F2FS_OPTION(sbi).compress_log_size = MIN_COMPRESS_LOG_SIZE; 2075 F2FS_OPTION(sbi).compress_ext_cnt = 0; 2076 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS; 2077 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON; 2078 F2FS_OPTION(sbi).memory_mode = MEMORY_MODE_NORMAL; 2079 2080 sbi->sb->s_flags &= ~SB_INLINECRYPT; 2081 2082 set_opt(sbi, INLINE_XATTR); 2083 set_opt(sbi, INLINE_DATA); 2084 set_opt(sbi, INLINE_DENTRY); 2085 set_opt(sbi, READ_EXTENT_CACHE); 2086 set_opt(sbi, NOHEAP); 2087 clear_opt(sbi, DISABLE_CHECKPOINT); 2088 set_opt(sbi, MERGE_CHECKPOINT); 2089 F2FS_OPTION(sbi).unusable_cap = 0; 2090 sbi->sb->s_flags |= SB_LAZYTIME; 2091 if (!f2fs_is_readonly(sbi)) 2092 set_opt(sbi, FLUSH_MERGE); 2093 if (f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) 2094 set_opt(sbi, DISCARD); 2095 if (f2fs_sb_has_blkzoned(sbi)) { 2096 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS; 2097 F2FS_OPTION(sbi).discard_unit = DISCARD_UNIT_SECTION; 2098 } else { 2099 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE; 2100 F2FS_OPTION(sbi).discard_unit = DISCARD_UNIT_BLOCK; 2101 } 2102 2103 #ifdef CONFIG_F2FS_FS_XATTR 2104 set_opt(sbi, XATTR_USER); 2105 #endif 2106 #ifdef CONFIG_F2FS_FS_POSIX_ACL 2107 set_opt(sbi, POSIX_ACL); 2108 #endif 2109 2110 f2fs_build_fault_attr(sbi, 0, 0); 2111 } 2112 2113 #ifdef CONFIG_QUOTA 2114 static int f2fs_enable_quotas(struct super_block *sb); 2115 #endif 2116 2117 static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi) 2118 { 2119 unsigned int s_flags = sbi->sb->s_flags; 2120 struct cp_control cpc; 2121 unsigned int gc_mode = sbi->gc_mode; 2122 int err = 0; 2123 int ret; 2124 block_t unusable; 2125 2126 if (s_flags & SB_RDONLY) { 2127 f2fs_err(sbi, "checkpoint=disable on readonly fs"); 2128 return -EINVAL; 2129 } 2130 sbi->sb->s_flags |= SB_ACTIVE; 2131 2132 /* check if we need more GC first */ 2133 unusable = f2fs_get_unusable_blocks(sbi); 2134 if (!f2fs_disable_cp_again(sbi, unusable)) 2135 goto skip_gc; 2136 2137 f2fs_update_time(sbi, DISABLE_TIME); 2138 2139 sbi->gc_mode = GC_URGENT_HIGH; 2140 2141 while (!f2fs_time_over(sbi, DISABLE_TIME)) { 2142 struct f2fs_gc_control gc_control = { 2143 .victim_segno = NULL_SEGNO, 2144 .init_gc_type = FG_GC, 2145 .should_migrate_blocks = false, 2146 .err_gc_skipped = true, 2147 .nr_free_secs = 1 }; 2148 2149 f2fs_down_write(&sbi->gc_lock); 2150 err = f2fs_gc(sbi, &gc_control); 2151 if (err == -ENODATA) { 2152 err = 0; 2153 break; 2154 } 2155 if (err && err != -EAGAIN) 2156 break; 2157 } 2158 2159 ret = sync_filesystem(sbi->sb); 2160 if (ret || err) { 2161 err = ret ? ret : err; 2162 goto restore_flag; 2163 } 2164 2165 unusable = f2fs_get_unusable_blocks(sbi); 2166 if (f2fs_disable_cp_again(sbi, unusable)) { 2167 err = -EAGAIN; 2168 goto restore_flag; 2169 } 2170 2171 skip_gc: 2172 f2fs_down_write(&sbi->gc_lock); 2173 cpc.reason = CP_PAUSE; 2174 set_sbi_flag(sbi, SBI_CP_DISABLED); 2175 err = f2fs_write_checkpoint(sbi, &cpc); 2176 if (err) 2177 goto out_unlock; 2178 2179 spin_lock(&sbi->stat_lock); 2180 sbi->unusable_block_count = unusable; 2181 spin_unlock(&sbi->stat_lock); 2182 2183 out_unlock: 2184 f2fs_up_write(&sbi->gc_lock); 2185 restore_flag: 2186 sbi->gc_mode = gc_mode; 2187 sbi->sb->s_flags = s_flags; /* Restore SB_RDONLY status */ 2188 return err; 2189 } 2190 2191 static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi) 2192 { 2193 int retry = DEFAULT_RETRY_IO_COUNT; 2194 2195 /* we should flush all the data to keep data consistency */ 2196 do { 2197 sync_inodes_sb(sbi->sb); 2198 f2fs_io_schedule_timeout(DEFAULT_IO_TIMEOUT); 2199 } while (get_pages(sbi, F2FS_DIRTY_DATA) && retry--); 2200 2201 if (unlikely(retry < 0)) 2202 f2fs_warn(sbi, "checkpoint=enable has some unwritten data."); 2203 2204 f2fs_down_write(&sbi->gc_lock); 2205 f2fs_dirty_to_prefree(sbi); 2206 2207 clear_sbi_flag(sbi, SBI_CP_DISABLED); 2208 set_sbi_flag(sbi, SBI_IS_DIRTY); 2209 f2fs_up_write(&sbi->gc_lock); 2210 2211 f2fs_sync_fs(sbi->sb, 1); 2212 2213 /* Let's ensure there's no pending checkpoint anymore */ 2214 f2fs_flush_ckpt_thread(sbi); 2215 } 2216 2217 static int f2fs_remount(struct super_block *sb, int *flags, char *data) 2218 { 2219 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2220 struct f2fs_mount_info org_mount_opt; 2221 unsigned long old_sb_flags; 2222 int err; 2223 bool need_restart_gc = false, need_stop_gc = false; 2224 bool need_restart_ckpt = false, need_stop_ckpt = false; 2225 bool need_restart_flush = false, need_stop_flush = false; 2226 bool need_restart_discard = false, need_stop_discard = false; 2227 bool no_read_extent_cache = !test_opt(sbi, READ_EXTENT_CACHE); 2228 bool no_age_extent_cache = !test_opt(sbi, AGE_EXTENT_CACHE); 2229 bool enable_checkpoint = !test_opt(sbi, DISABLE_CHECKPOINT); 2230 bool no_io_align = !F2FS_IO_ALIGNED(sbi); 2231 bool no_atgc = !test_opt(sbi, ATGC); 2232 bool no_discard = !test_opt(sbi, DISCARD); 2233 bool no_compress_cache = !test_opt(sbi, COMPRESS_CACHE); 2234 bool block_unit_discard = f2fs_block_unit_discard(sbi); 2235 #ifdef CONFIG_QUOTA 2236 int i, j; 2237 #endif 2238 2239 /* 2240 * Save the old mount options in case we 2241 * need to restore them. 2242 */ 2243 org_mount_opt = sbi->mount_opt; 2244 old_sb_flags = sb->s_flags; 2245 2246 #ifdef CONFIG_QUOTA 2247 org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt; 2248 for (i = 0; i < MAXQUOTAS; i++) { 2249 if (F2FS_OPTION(sbi).s_qf_names[i]) { 2250 org_mount_opt.s_qf_names[i] = 2251 kstrdup(F2FS_OPTION(sbi).s_qf_names[i], 2252 GFP_KERNEL); 2253 if (!org_mount_opt.s_qf_names[i]) { 2254 for (j = 0; j < i; j++) 2255 kfree(org_mount_opt.s_qf_names[j]); 2256 return -ENOMEM; 2257 } 2258 } else { 2259 org_mount_opt.s_qf_names[i] = NULL; 2260 } 2261 } 2262 #endif 2263 2264 /* recover superblocks we couldn't write due to previous RO mount */ 2265 if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) { 2266 err = f2fs_commit_super(sbi, false); 2267 f2fs_info(sbi, "Try to recover all the superblocks, ret: %d", 2268 err); 2269 if (!err) 2270 clear_sbi_flag(sbi, SBI_NEED_SB_WRITE); 2271 } 2272 2273 default_options(sbi); 2274 2275 /* parse mount options */ 2276 err = parse_options(sb, data, true); 2277 if (err) 2278 goto restore_opts; 2279 2280 /* 2281 * Previous and new state of filesystem is RO, 2282 * so skip checking GC and FLUSH_MERGE conditions. 2283 */ 2284 if (f2fs_readonly(sb) && (*flags & SB_RDONLY)) 2285 goto skip; 2286 2287 if (f2fs_sb_has_readonly(sbi) && !(*flags & SB_RDONLY)) { 2288 err = -EROFS; 2289 goto restore_opts; 2290 } 2291 2292 #ifdef CONFIG_QUOTA 2293 if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) { 2294 err = dquot_suspend(sb, -1); 2295 if (err < 0) 2296 goto restore_opts; 2297 } else if (f2fs_readonly(sb) && !(*flags & SB_RDONLY)) { 2298 /* dquot_resume needs RW */ 2299 sb->s_flags &= ~SB_RDONLY; 2300 if (sb_any_quota_suspended(sb)) { 2301 dquot_resume(sb, -1); 2302 } else if (f2fs_sb_has_quota_ino(sbi)) { 2303 err = f2fs_enable_quotas(sb); 2304 if (err) 2305 goto restore_opts; 2306 } 2307 } 2308 #endif 2309 /* disallow enable atgc dynamically */ 2310 if (no_atgc == !!test_opt(sbi, ATGC)) { 2311 err = -EINVAL; 2312 f2fs_warn(sbi, "switch atgc option is not allowed"); 2313 goto restore_opts; 2314 } 2315 2316 /* disallow enable/disable extent_cache dynamically */ 2317 if (no_read_extent_cache == !!test_opt(sbi, READ_EXTENT_CACHE)) { 2318 err = -EINVAL; 2319 f2fs_warn(sbi, "switch extent_cache option is not allowed"); 2320 goto restore_opts; 2321 } 2322 /* disallow enable/disable age extent_cache dynamically */ 2323 if (no_age_extent_cache == !!test_opt(sbi, AGE_EXTENT_CACHE)) { 2324 err = -EINVAL; 2325 f2fs_warn(sbi, "switch age_extent_cache option is not allowed"); 2326 goto restore_opts; 2327 } 2328 2329 if (no_io_align == !!F2FS_IO_ALIGNED(sbi)) { 2330 err = -EINVAL; 2331 f2fs_warn(sbi, "switch io_bits option is not allowed"); 2332 goto restore_opts; 2333 } 2334 2335 if (no_compress_cache == !!test_opt(sbi, COMPRESS_CACHE)) { 2336 err = -EINVAL; 2337 f2fs_warn(sbi, "switch compress_cache option is not allowed"); 2338 goto restore_opts; 2339 } 2340 2341 if (block_unit_discard != f2fs_block_unit_discard(sbi)) { 2342 err = -EINVAL; 2343 f2fs_warn(sbi, "switch discard_unit option is not allowed"); 2344 goto restore_opts; 2345 } 2346 2347 if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) { 2348 err = -EINVAL; 2349 f2fs_warn(sbi, "disabling checkpoint not compatible with read-only"); 2350 goto restore_opts; 2351 } 2352 2353 /* 2354 * We stop the GC thread if FS is mounted as RO 2355 * or if background_gc = off is passed in mount 2356 * option. Also sync the filesystem. 2357 */ 2358 if ((*flags & SB_RDONLY) || 2359 (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF && 2360 !test_opt(sbi, GC_MERGE))) { 2361 if (sbi->gc_thread) { 2362 f2fs_stop_gc_thread(sbi); 2363 need_restart_gc = true; 2364 } 2365 } else if (!sbi->gc_thread) { 2366 err = f2fs_start_gc_thread(sbi); 2367 if (err) 2368 goto restore_opts; 2369 need_stop_gc = true; 2370 } 2371 2372 if (*flags & SB_RDONLY) { 2373 sync_inodes_sb(sb); 2374 2375 set_sbi_flag(sbi, SBI_IS_DIRTY); 2376 set_sbi_flag(sbi, SBI_IS_CLOSE); 2377 f2fs_sync_fs(sb, 1); 2378 clear_sbi_flag(sbi, SBI_IS_CLOSE); 2379 } 2380 2381 if ((*flags & SB_RDONLY) || test_opt(sbi, DISABLE_CHECKPOINT) || 2382 !test_opt(sbi, MERGE_CHECKPOINT)) { 2383 f2fs_stop_ckpt_thread(sbi); 2384 need_restart_ckpt = true; 2385 } else { 2386 /* Flush if the prevous checkpoint, if exists. */ 2387 f2fs_flush_ckpt_thread(sbi); 2388 2389 err = f2fs_start_ckpt_thread(sbi); 2390 if (err) { 2391 f2fs_err(sbi, 2392 "Failed to start F2FS issue_checkpoint_thread (%d)", 2393 err); 2394 goto restore_gc; 2395 } 2396 need_stop_ckpt = true; 2397 } 2398 2399 /* 2400 * We stop issue flush thread if FS is mounted as RO 2401 * or if flush_merge is not passed in mount option. 2402 */ 2403 if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) { 2404 clear_opt(sbi, FLUSH_MERGE); 2405 f2fs_destroy_flush_cmd_control(sbi, false); 2406 need_restart_flush = true; 2407 } else { 2408 err = f2fs_create_flush_cmd_control(sbi); 2409 if (err) 2410 goto restore_ckpt; 2411 need_stop_flush = true; 2412 } 2413 2414 if (no_discard == !!test_opt(sbi, DISCARD)) { 2415 if (test_opt(sbi, DISCARD)) { 2416 err = f2fs_start_discard_thread(sbi); 2417 if (err) 2418 goto restore_flush; 2419 need_stop_discard = true; 2420 } else { 2421 f2fs_stop_discard_thread(sbi); 2422 f2fs_issue_discard_timeout(sbi); 2423 need_restart_discard = true; 2424 } 2425 } 2426 2427 if (enable_checkpoint == !!test_opt(sbi, DISABLE_CHECKPOINT)) { 2428 if (test_opt(sbi, DISABLE_CHECKPOINT)) { 2429 err = f2fs_disable_checkpoint(sbi); 2430 if (err) 2431 goto restore_discard; 2432 } else { 2433 f2fs_enable_checkpoint(sbi); 2434 } 2435 } 2436 2437 skip: 2438 #ifdef CONFIG_QUOTA 2439 /* Release old quota file names */ 2440 for (i = 0; i < MAXQUOTAS; i++) 2441 kfree(org_mount_opt.s_qf_names[i]); 2442 #endif 2443 /* Update the POSIXACL Flag */ 2444 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) | 2445 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0); 2446 2447 limit_reserve_root(sbi); 2448 adjust_unusable_cap_perc(sbi); 2449 *flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME); 2450 return 0; 2451 restore_discard: 2452 if (need_restart_discard) { 2453 if (f2fs_start_discard_thread(sbi)) 2454 f2fs_warn(sbi, "discard has been stopped"); 2455 } else if (need_stop_discard) { 2456 f2fs_stop_discard_thread(sbi); 2457 } 2458 restore_flush: 2459 if (need_restart_flush) { 2460 if (f2fs_create_flush_cmd_control(sbi)) 2461 f2fs_warn(sbi, "background flush thread has stopped"); 2462 } else if (need_stop_flush) { 2463 clear_opt(sbi, FLUSH_MERGE); 2464 f2fs_destroy_flush_cmd_control(sbi, false); 2465 } 2466 restore_ckpt: 2467 if (need_restart_ckpt) { 2468 if (f2fs_start_ckpt_thread(sbi)) 2469 f2fs_warn(sbi, "background ckpt thread has stopped"); 2470 } else if (need_stop_ckpt) { 2471 f2fs_stop_ckpt_thread(sbi); 2472 } 2473 restore_gc: 2474 if (need_restart_gc) { 2475 if (f2fs_start_gc_thread(sbi)) 2476 f2fs_warn(sbi, "background gc thread has stopped"); 2477 } else if (need_stop_gc) { 2478 f2fs_stop_gc_thread(sbi); 2479 } 2480 restore_opts: 2481 #ifdef CONFIG_QUOTA 2482 F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt; 2483 for (i = 0; i < MAXQUOTAS; i++) { 2484 kfree(F2FS_OPTION(sbi).s_qf_names[i]); 2485 F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i]; 2486 } 2487 #endif 2488 sbi->mount_opt = org_mount_opt; 2489 sb->s_flags = old_sb_flags; 2490 return err; 2491 } 2492 2493 #ifdef CONFIG_QUOTA 2494 /* Read data from quotafile */ 2495 static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data, 2496 size_t len, loff_t off) 2497 { 2498 struct inode *inode = sb_dqopt(sb)->files[type]; 2499 struct address_space *mapping = inode->i_mapping; 2500 block_t blkidx = F2FS_BYTES_TO_BLK(off); 2501 int offset = off & (sb->s_blocksize - 1); 2502 int tocopy; 2503 size_t toread; 2504 loff_t i_size = i_size_read(inode); 2505 struct page *page; 2506 2507 if (off > i_size) 2508 return 0; 2509 2510 if (off + len > i_size) 2511 len = i_size - off; 2512 toread = len; 2513 while (toread > 0) { 2514 tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread); 2515 repeat: 2516 page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS); 2517 if (IS_ERR(page)) { 2518 if (PTR_ERR(page) == -ENOMEM) { 2519 memalloc_retry_wait(GFP_NOFS); 2520 goto repeat; 2521 } 2522 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2523 return PTR_ERR(page); 2524 } 2525 2526 lock_page(page); 2527 2528 if (unlikely(page->mapping != mapping)) { 2529 f2fs_put_page(page, 1); 2530 goto repeat; 2531 } 2532 if (unlikely(!PageUptodate(page))) { 2533 f2fs_put_page(page, 1); 2534 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2535 return -EIO; 2536 } 2537 2538 memcpy_from_page(data, page, offset, tocopy); 2539 f2fs_put_page(page, 1); 2540 2541 offset = 0; 2542 toread -= tocopy; 2543 data += tocopy; 2544 blkidx++; 2545 } 2546 return len; 2547 } 2548 2549 /* Write to quotafile */ 2550 static ssize_t f2fs_quota_write(struct super_block *sb, int type, 2551 const char *data, size_t len, loff_t off) 2552 { 2553 struct inode *inode = sb_dqopt(sb)->files[type]; 2554 struct address_space *mapping = inode->i_mapping; 2555 const struct address_space_operations *a_ops = mapping->a_ops; 2556 int offset = off & (sb->s_blocksize - 1); 2557 size_t towrite = len; 2558 struct page *page; 2559 void *fsdata = NULL; 2560 int err = 0; 2561 int tocopy; 2562 2563 while (towrite > 0) { 2564 tocopy = min_t(unsigned long, sb->s_blocksize - offset, 2565 towrite); 2566 retry: 2567 err = a_ops->write_begin(NULL, mapping, off, tocopy, 2568 &page, &fsdata); 2569 if (unlikely(err)) { 2570 if (err == -ENOMEM) { 2571 f2fs_io_schedule_timeout(DEFAULT_IO_TIMEOUT); 2572 goto retry; 2573 } 2574 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2575 break; 2576 } 2577 2578 memcpy_to_page(page, offset, data, tocopy); 2579 2580 a_ops->write_end(NULL, mapping, off, tocopy, tocopy, 2581 page, fsdata); 2582 offset = 0; 2583 towrite -= tocopy; 2584 off += tocopy; 2585 data += tocopy; 2586 cond_resched(); 2587 } 2588 2589 if (len == towrite) 2590 return err; 2591 inode->i_mtime = inode->i_ctime = current_time(inode); 2592 f2fs_mark_inode_dirty_sync(inode, false); 2593 return len - towrite; 2594 } 2595 2596 int f2fs_dquot_initialize(struct inode *inode) 2597 { 2598 if (time_to_inject(F2FS_I_SB(inode), FAULT_DQUOT_INIT)) { 2599 f2fs_show_injection_info(F2FS_I_SB(inode), FAULT_DQUOT_INIT); 2600 return -ESRCH; 2601 } 2602 2603 return dquot_initialize(inode); 2604 } 2605 2606 static struct dquot **f2fs_get_dquots(struct inode *inode) 2607 { 2608 return F2FS_I(inode)->i_dquot; 2609 } 2610 2611 static qsize_t *f2fs_get_reserved_space(struct inode *inode) 2612 { 2613 return &F2FS_I(inode)->i_reserved_quota; 2614 } 2615 2616 static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type) 2617 { 2618 if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) { 2619 f2fs_err(sbi, "quota sysfile may be corrupted, skip loading it"); 2620 return 0; 2621 } 2622 2623 return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type], 2624 F2FS_OPTION(sbi).s_jquota_fmt, type); 2625 } 2626 2627 int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly) 2628 { 2629 int enabled = 0; 2630 int i, err; 2631 2632 if (f2fs_sb_has_quota_ino(sbi) && rdonly) { 2633 err = f2fs_enable_quotas(sbi->sb); 2634 if (err) { 2635 f2fs_err(sbi, "Cannot turn on quota_ino: %d", err); 2636 return 0; 2637 } 2638 return 1; 2639 } 2640 2641 for (i = 0; i < MAXQUOTAS; i++) { 2642 if (F2FS_OPTION(sbi).s_qf_names[i]) { 2643 err = f2fs_quota_on_mount(sbi, i); 2644 if (!err) { 2645 enabled = 1; 2646 continue; 2647 } 2648 f2fs_err(sbi, "Cannot turn on quotas: %d on %d", 2649 err, i); 2650 } 2651 } 2652 return enabled; 2653 } 2654 2655 static int f2fs_quota_enable(struct super_block *sb, int type, int format_id, 2656 unsigned int flags) 2657 { 2658 struct inode *qf_inode; 2659 unsigned long qf_inum; 2660 int err; 2661 2662 BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb))); 2663 2664 qf_inum = f2fs_qf_ino(sb, type); 2665 if (!qf_inum) 2666 return -EPERM; 2667 2668 qf_inode = f2fs_iget(sb, qf_inum); 2669 if (IS_ERR(qf_inode)) { 2670 f2fs_err(F2FS_SB(sb), "Bad quota inode %u:%lu", type, qf_inum); 2671 return PTR_ERR(qf_inode); 2672 } 2673 2674 /* Don't account quota for quota files to avoid recursion */ 2675 qf_inode->i_flags |= S_NOQUOTA; 2676 err = dquot_load_quota_inode(qf_inode, type, format_id, flags); 2677 iput(qf_inode); 2678 return err; 2679 } 2680 2681 static int f2fs_enable_quotas(struct super_block *sb) 2682 { 2683 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2684 int type, err = 0; 2685 unsigned long qf_inum; 2686 bool quota_mopt[MAXQUOTAS] = { 2687 test_opt(sbi, USRQUOTA), 2688 test_opt(sbi, GRPQUOTA), 2689 test_opt(sbi, PRJQUOTA), 2690 }; 2691 2692 if (is_set_ckpt_flags(F2FS_SB(sb), CP_QUOTA_NEED_FSCK_FLAG)) { 2693 f2fs_err(sbi, "quota file may be corrupted, skip loading it"); 2694 return 0; 2695 } 2696 2697 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE; 2698 2699 for (type = 0; type < MAXQUOTAS; type++) { 2700 qf_inum = f2fs_qf_ino(sb, type); 2701 if (qf_inum) { 2702 err = f2fs_quota_enable(sb, type, QFMT_VFS_V1, 2703 DQUOT_USAGE_ENABLED | 2704 (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0)); 2705 if (err) { 2706 f2fs_err(sbi, "Failed to enable quota tracking (type=%d, err=%d). Please run fsck to fix.", 2707 type, err); 2708 for (type--; type >= 0; type--) 2709 dquot_quota_off(sb, type); 2710 set_sbi_flag(F2FS_SB(sb), 2711 SBI_QUOTA_NEED_REPAIR); 2712 return err; 2713 } 2714 } 2715 } 2716 return 0; 2717 } 2718 2719 static int f2fs_quota_sync_file(struct f2fs_sb_info *sbi, int type) 2720 { 2721 struct quota_info *dqopt = sb_dqopt(sbi->sb); 2722 struct address_space *mapping = dqopt->files[type]->i_mapping; 2723 int ret = 0; 2724 2725 ret = dquot_writeback_dquots(sbi->sb, type); 2726 if (ret) 2727 goto out; 2728 2729 ret = filemap_fdatawrite(mapping); 2730 if (ret) 2731 goto out; 2732 2733 /* if we are using journalled quota */ 2734 if (is_journalled_quota(sbi)) 2735 goto out; 2736 2737 ret = filemap_fdatawait(mapping); 2738 2739 truncate_inode_pages(&dqopt->files[type]->i_data, 0); 2740 out: 2741 if (ret) 2742 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2743 return ret; 2744 } 2745 2746 int f2fs_quota_sync(struct super_block *sb, int type) 2747 { 2748 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2749 struct quota_info *dqopt = sb_dqopt(sb); 2750 int cnt; 2751 int ret = 0; 2752 2753 /* 2754 * Now when everything is written we can discard the pagecache so 2755 * that userspace sees the changes. 2756 */ 2757 for (cnt = 0; cnt < MAXQUOTAS; cnt++) { 2758 2759 if (type != -1 && cnt != type) 2760 continue; 2761 2762 if (!sb_has_quota_active(sb, cnt)) 2763 continue; 2764 2765 if (!f2fs_sb_has_quota_ino(sbi)) 2766 inode_lock(dqopt->files[cnt]); 2767 2768 /* 2769 * do_quotactl 2770 * f2fs_quota_sync 2771 * f2fs_down_read(quota_sem) 2772 * dquot_writeback_dquots() 2773 * f2fs_dquot_commit 2774 * block_operation 2775 * f2fs_down_read(quota_sem) 2776 */ 2777 f2fs_lock_op(sbi); 2778 f2fs_down_read(&sbi->quota_sem); 2779 2780 ret = f2fs_quota_sync_file(sbi, cnt); 2781 2782 f2fs_up_read(&sbi->quota_sem); 2783 f2fs_unlock_op(sbi); 2784 2785 if (!f2fs_sb_has_quota_ino(sbi)) 2786 inode_unlock(dqopt->files[cnt]); 2787 2788 if (ret) 2789 break; 2790 } 2791 return ret; 2792 } 2793 2794 static int f2fs_quota_on(struct super_block *sb, int type, int format_id, 2795 const struct path *path) 2796 { 2797 struct inode *inode; 2798 int err; 2799 2800 /* if quota sysfile exists, deny enabling quota with specific file */ 2801 if (f2fs_sb_has_quota_ino(F2FS_SB(sb))) { 2802 f2fs_err(F2FS_SB(sb), "quota sysfile already exists"); 2803 return -EBUSY; 2804 } 2805 2806 err = f2fs_quota_sync(sb, type); 2807 if (err) 2808 return err; 2809 2810 err = dquot_quota_on(sb, type, format_id, path); 2811 if (err) 2812 return err; 2813 2814 inode = d_inode(path->dentry); 2815 2816 inode_lock(inode); 2817 F2FS_I(inode)->i_flags |= F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL; 2818 f2fs_set_inode_flags(inode); 2819 inode_unlock(inode); 2820 f2fs_mark_inode_dirty_sync(inode, false); 2821 2822 return 0; 2823 } 2824 2825 static int __f2fs_quota_off(struct super_block *sb, int type) 2826 { 2827 struct inode *inode = sb_dqopt(sb)->files[type]; 2828 int err; 2829 2830 if (!inode || !igrab(inode)) 2831 return dquot_quota_off(sb, type); 2832 2833 err = f2fs_quota_sync(sb, type); 2834 if (err) 2835 goto out_put; 2836 2837 err = dquot_quota_off(sb, type); 2838 if (err || f2fs_sb_has_quota_ino(F2FS_SB(sb))) 2839 goto out_put; 2840 2841 inode_lock(inode); 2842 F2FS_I(inode)->i_flags &= ~(F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL); 2843 f2fs_set_inode_flags(inode); 2844 inode_unlock(inode); 2845 f2fs_mark_inode_dirty_sync(inode, false); 2846 out_put: 2847 iput(inode); 2848 return err; 2849 } 2850 2851 static int f2fs_quota_off(struct super_block *sb, int type) 2852 { 2853 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2854 int err; 2855 2856 err = __f2fs_quota_off(sb, type); 2857 2858 /* 2859 * quotactl can shutdown journalled quota, result in inconsistence 2860 * between quota record and fs data by following updates, tag the 2861 * flag to let fsck be aware of it. 2862 */ 2863 if (is_journalled_quota(sbi)) 2864 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2865 return err; 2866 } 2867 2868 void f2fs_quota_off_umount(struct super_block *sb) 2869 { 2870 int type; 2871 int err; 2872 2873 for (type = 0; type < MAXQUOTAS; type++) { 2874 err = __f2fs_quota_off(sb, type); 2875 if (err) { 2876 int ret = dquot_quota_off(sb, type); 2877 2878 f2fs_err(F2FS_SB(sb), "Fail to turn off disk quota (type: %d, err: %d, ret:%d), Please run fsck to fix it.", 2879 type, err, ret); 2880 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2881 } 2882 } 2883 /* 2884 * In case of checkpoint=disable, we must flush quota blocks. 2885 * This can cause NULL exception for node_inode in end_io, since 2886 * put_super already dropped it. 2887 */ 2888 sync_filesystem(sb); 2889 } 2890 2891 static void f2fs_truncate_quota_inode_pages(struct super_block *sb) 2892 { 2893 struct quota_info *dqopt = sb_dqopt(sb); 2894 int type; 2895 2896 for (type = 0; type < MAXQUOTAS; type++) { 2897 if (!dqopt->files[type]) 2898 continue; 2899 f2fs_inode_synced(dqopt->files[type]); 2900 } 2901 } 2902 2903 static int f2fs_dquot_commit(struct dquot *dquot) 2904 { 2905 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb); 2906 int ret; 2907 2908 f2fs_down_read_nested(&sbi->quota_sem, SINGLE_DEPTH_NESTING); 2909 ret = dquot_commit(dquot); 2910 if (ret < 0) 2911 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2912 f2fs_up_read(&sbi->quota_sem); 2913 return ret; 2914 } 2915 2916 static int f2fs_dquot_acquire(struct dquot *dquot) 2917 { 2918 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb); 2919 int ret; 2920 2921 f2fs_down_read(&sbi->quota_sem); 2922 ret = dquot_acquire(dquot); 2923 if (ret < 0) 2924 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2925 f2fs_up_read(&sbi->quota_sem); 2926 return ret; 2927 } 2928 2929 static int f2fs_dquot_release(struct dquot *dquot) 2930 { 2931 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb); 2932 int ret = dquot_release(dquot); 2933 2934 if (ret < 0) 2935 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2936 return ret; 2937 } 2938 2939 static int f2fs_dquot_mark_dquot_dirty(struct dquot *dquot) 2940 { 2941 struct super_block *sb = dquot->dq_sb; 2942 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2943 int ret = dquot_mark_dquot_dirty(dquot); 2944 2945 /* if we are using journalled quota */ 2946 if (is_journalled_quota(sbi)) 2947 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH); 2948 2949 return ret; 2950 } 2951 2952 static int f2fs_dquot_commit_info(struct super_block *sb, int type) 2953 { 2954 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2955 int ret = dquot_commit_info(sb, type); 2956 2957 if (ret < 0) 2958 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2959 return ret; 2960 } 2961 2962 static int f2fs_get_projid(struct inode *inode, kprojid_t *projid) 2963 { 2964 *projid = F2FS_I(inode)->i_projid; 2965 return 0; 2966 } 2967 2968 static const struct dquot_operations f2fs_quota_operations = { 2969 .get_reserved_space = f2fs_get_reserved_space, 2970 .write_dquot = f2fs_dquot_commit, 2971 .acquire_dquot = f2fs_dquot_acquire, 2972 .release_dquot = f2fs_dquot_release, 2973 .mark_dirty = f2fs_dquot_mark_dquot_dirty, 2974 .write_info = f2fs_dquot_commit_info, 2975 .alloc_dquot = dquot_alloc, 2976 .destroy_dquot = dquot_destroy, 2977 .get_projid = f2fs_get_projid, 2978 .get_next_id = dquot_get_next_id, 2979 }; 2980 2981 static const struct quotactl_ops f2fs_quotactl_ops = { 2982 .quota_on = f2fs_quota_on, 2983 .quota_off = f2fs_quota_off, 2984 .quota_sync = f2fs_quota_sync, 2985 .get_state = dquot_get_state, 2986 .set_info = dquot_set_dqinfo, 2987 .get_dqblk = dquot_get_dqblk, 2988 .set_dqblk = dquot_set_dqblk, 2989 .get_nextdqblk = dquot_get_next_dqblk, 2990 }; 2991 #else 2992 int f2fs_dquot_initialize(struct inode *inode) 2993 { 2994 return 0; 2995 } 2996 2997 int f2fs_quota_sync(struct super_block *sb, int type) 2998 { 2999 return 0; 3000 } 3001 3002 void f2fs_quota_off_umount(struct super_block *sb) 3003 { 3004 } 3005 #endif 3006 3007 static const struct super_operations f2fs_sops = { 3008 .alloc_inode = f2fs_alloc_inode, 3009 .free_inode = f2fs_free_inode, 3010 .drop_inode = f2fs_drop_inode, 3011 .write_inode = f2fs_write_inode, 3012 .dirty_inode = f2fs_dirty_inode, 3013 .show_options = f2fs_show_options, 3014 #ifdef CONFIG_QUOTA 3015 .quota_read = f2fs_quota_read, 3016 .quota_write = f2fs_quota_write, 3017 .get_dquots = f2fs_get_dquots, 3018 #endif 3019 .evict_inode = f2fs_evict_inode, 3020 .put_super = f2fs_put_super, 3021 .sync_fs = f2fs_sync_fs, 3022 .freeze_fs = f2fs_freeze, 3023 .unfreeze_fs = f2fs_unfreeze, 3024 .statfs = f2fs_statfs, 3025 .remount_fs = f2fs_remount, 3026 }; 3027 3028 #ifdef CONFIG_FS_ENCRYPTION 3029 static int f2fs_get_context(struct inode *inode, void *ctx, size_t len) 3030 { 3031 return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION, 3032 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, 3033 ctx, len, NULL); 3034 } 3035 3036 static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len, 3037 void *fs_data) 3038 { 3039 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 3040 3041 /* 3042 * Encrypting the root directory is not allowed because fsck 3043 * expects lost+found directory to exist and remain unencrypted 3044 * if LOST_FOUND feature is enabled. 3045 * 3046 */ 3047 if (f2fs_sb_has_lost_found(sbi) && 3048 inode->i_ino == F2FS_ROOT_INO(sbi)) 3049 return -EPERM; 3050 3051 return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION, 3052 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, 3053 ctx, len, fs_data, XATTR_CREATE); 3054 } 3055 3056 static const union fscrypt_policy *f2fs_get_dummy_policy(struct super_block *sb) 3057 { 3058 return F2FS_OPTION(F2FS_SB(sb)).dummy_enc_policy.policy; 3059 } 3060 3061 static bool f2fs_has_stable_inodes(struct super_block *sb) 3062 { 3063 return true; 3064 } 3065 3066 static void f2fs_get_ino_and_lblk_bits(struct super_block *sb, 3067 int *ino_bits_ret, int *lblk_bits_ret) 3068 { 3069 *ino_bits_ret = 8 * sizeof(nid_t); 3070 *lblk_bits_ret = 8 * sizeof(block_t); 3071 } 3072 3073 static struct block_device **f2fs_get_devices(struct super_block *sb, 3074 unsigned int *num_devs) 3075 { 3076 struct f2fs_sb_info *sbi = F2FS_SB(sb); 3077 struct block_device **devs; 3078 int i; 3079 3080 if (!f2fs_is_multi_device(sbi)) 3081 return NULL; 3082 3083 devs = kmalloc_array(sbi->s_ndevs, sizeof(*devs), GFP_KERNEL); 3084 if (!devs) 3085 return ERR_PTR(-ENOMEM); 3086 3087 for (i = 0; i < sbi->s_ndevs; i++) 3088 devs[i] = FDEV(i).bdev; 3089 *num_devs = sbi->s_ndevs; 3090 return devs; 3091 } 3092 3093 static const struct fscrypt_operations f2fs_cryptops = { 3094 .key_prefix = "f2fs:", 3095 .get_context = f2fs_get_context, 3096 .set_context = f2fs_set_context, 3097 .get_dummy_policy = f2fs_get_dummy_policy, 3098 .empty_dir = f2fs_empty_dir, 3099 .has_stable_inodes = f2fs_has_stable_inodes, 3100 .get_ino_and_lblk_bits = f2fs_get_ino_and_lblk_bits, 3101 .get_devices = f2fs_get_devices, 3102 }; 3103 #endif 3104 3105 static struct inode *f2fs_nfs_get_inode(struct super_block *sb, 3106 u64 ino, u32 generation) 3107 { 3108 struct f2fs_sb_info *sbi = F2FS_SB(sb); 3109 struct inode *inode; 3110 3111 if (f2fs_check_nid_range(sbi, ino)) 3112 return ERR_PTR(-ESTALE); 3113 3114 /* 3115 * f2fs_iget isn't quite right if the inode is currently unallocated! 3116 * However f2fs_iget currently does appropriate checks to handle stale 3117 * inodes so everything is OK. 3118 */ 3119 inode = f2fs_iget(sb, ino); 3120 if (IS_ERR(inode)) 3121 return ERR_CAST(inode); 3122 if (unlikely(generation && inode->i_generation != generation)) { 3123 /* we didn't find the right inode.. */ 3124 iput(inode); 3125 return ERR_PTR(-ESTALE); 3126 } 3127 return inode; 3128 } 3129 3130 static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid, 3131 int fh_len, int fh_type) 3132 { 3133 return generic_fh_to_dentry(sb, fid, fh_len, fh_type, 3134 f2fs_nfs_get_inode); 3135 } 3136 3137 static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid, 3138 int fh_len, int fh_type) 3139 { 3140 return generic_fh_to_parent(sb, fid, fh_len, fh_type, 3141 f2fs_nfs_get_inode); 3142 } 3143 3144 static const struct export_operations f2fs_export_ops = { 3145 .fh_to_dentry = f2fs_fh_to_dentry, 3146 .fh_to_parent = f2fs_fh_to_parent, 3147 .get_parent = f2fs_get_parent, 3148 }; 3149 3150 loff_t max_file_blocks(struct inode *inode) 3151 { 3152 loff_t result = 0; 3153 loff_t leaf_count; 3154 3155 /* 3156 * note: previously, result is equal to (DEF_ADDRS_PER_INODE - 3157 * DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more 3158 * space in inode.i_addr, it will be more safe to reassign 3159 * result as zero. 3160 */ 3161 3162 if (inode && f2fs_compressed_file(inode)) 3163 leaf_count = ADDRS_PER_BLOCK(inode); 3164 else 3165 leaf_count = DEF_ADDRS_PER_BLOCK; 3166 3167 /* two direct node blocks */ 3168 result += (leaf_count * 2); 3169 3170 /* two indirect node blocks */ 3171 leaf_count *= NIDS_PER_BLOCK; 3172 result += (leaf_count * 2); 3173 3174 /* one double indirect node block */ 3175 leaf_count *= NIDS_PER_BLOCK; 3176 result += leaf_count; 3177 3178 return result; 3179 } 3180 3181 static int __f2fs_commit_super(struct buffer_head *bh, 3182 struct f2fs_super_block *super) 3183 { 3184 lock_buffer(bh); 3185 if (super) 3186 memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super)); 3187 set_buffer_dirty(bh); 3188 unlock_buffer(bh); 3189 3190 /* it's rare case, we can do fua all the time */ 3191 return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA); 3192 } 3193 3194 static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi, 3195 struct buffer_head *bh) 3196 { 3197 struct f2fs_super_block *raw_super = (struct f2fs_super_block *) 3198 (bh->b_data + F2FS_SUPER_OFFSET); 3199 struct super_block *sb = sbi->sb; 3200 u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr); 3201 u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr); 3202 u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr); 3203 u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr); 3204 u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr); 3205 u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr); 3206 u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt); 3207 u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit); 3208 u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat); 3209 u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa); 3210 u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main); 3211 u32 segment_count = le32_to_cpu(raw_super->segment_count); 3212 u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); 3213 u64 main_end_blkaddr = main_blkaddr + 3214 (segment_count_main << log_blocks_per_seg); 3215 u64 seg_end_blkaddr = segment0_blkaddr + 3216 (segment_count << log_blocks_per_seg); 3217 3218 if (segment0_blkaddr != cp_blkaddr) { 3219 f2fs_info(sbi, "Mismatch start address, segment0(%u) cp_blkaddr(%u)", 3220 segment0_blkaddr, cp_blkaddr); 3221 return true; 3222 } 3223 3224 if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) != 3225 sit_blkaddr) { 3226 f2fs_info(sbi, "Wrong CP boundary, start(%u) end(%u) blocks(%u)", 3227 cp_blkaddr, sit_blkaddr, 3228 segment_count_ckpt << log_blocks_per_seg); 3229 return true; 3230 } 3231 3232 if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) != 3233 nat_blkaddr) { 3234 f2fs_info(sbi, "Wrong SIT boundary, start(%u) end(%u) blocks(%u)", 3235 sit_blkaddr, nat_blkaddr, 3236 segment_count_sit << log_blocks_per_seg); 3237 return true; 3238 } 3239 3240 if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) != 3241 ssa_blkaddr) { 3242 f2fs_info(sbi, "Wrong NAT boundary, start(%u) end(%u) blocks(%u)", 3243 nat_blkaddr, ssa_blkaddr, 3244 segment_count_nat << log_blocks_per_seg); 3245 return true; 3246 } 3247 3248 if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) != 3249 main_blkaddr) { 3250 f2fs_info(sbi, "Wrong SSA boundary, start(%u) end(%u) blocks(%u)", 3251 ssa_blkaddr, main_blkaddr, 3252 segment_count_ssa << log_blocks_per_seg); 3253 return true; 3254 } 3255 3256 if (main_end_blkaddr > seg_end_blkaddr) { 3257 f2fs_info(sbi, "Wrong MAIN_AREA boundary, start(%u) end(%llu) block(%u)", 3258 main_blkaddr, seg_end_blkaddr, 3259 segment_count_main << log_blocks_per_seg); 3260 return true; 3261 } else if (main_end_blkaddr < seg_end_blkaddr) { 3262 int err = 0; 3263 char *res; 3264 3265 /* fix in-memory information all the time */ 3266 raw_super->segment_count = cpu_to_le32((main_end_blkaddr - 3267 segment0_blkaddr) >> log_blocks_per_seg); 3268 3269 if (f2fs_readonly(sb) || bdev_read_only(sb->s_bdev)) { 3270 set_sbi_flag(sbi, SBI_NEED_SB_WRITE); 3271 res = "internally"; 3272 } else { 3273 err = __f2fs_commit_super(bh, NULL); 3274 res = err ? "failed" : "done"; 3275 } 3276 f2fs_info(sbi, "Fix alignment : %s, start(%u) end(%llu) block(%u)", 3277 res, main_blkaddr, seg_end_blkaddr, 3278 segment_count_main << log_blocks_per_seg); 3279 if (err) 3280 return true; 3281 } 3282 return false; 3283 } 3284 3285 static int sanity_check_raw_super(struct f2fs_sb_info *sbi, 3286 struct buffer_head *bh) 3287 { 3288 block_t segment_count, segs_per_sec, secs_per_zone, segment_count_main; 3289 block_t total_sections, blocks_per_seg; 3290 struct f2fs_super_block *raw_super = (struct f2fs_super_block *) 3291 (bh->b_data + F2FS_SUPER_OFFSET); 3292 size_t crc_offset = 0; 3293 __u32 crc = 0; 3294 3295 if (le32_to_cpu(raw_super->magic) != F2FS_SUPER_MAGIC) { 3296 f2fs_info(sbi, "Magic Mismatch, valid(0x%x) - read(0x%x)", 3297 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic)); 3298 return -EINVAL; 3299 } 3300 3301 /* Check checksum_offset and crc in superblock */ 3302 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_SB_CHKSUM)) { 3303 crc_offset = le32_to_cpu(raw_super->checksum_offset); 3304 if (crc_offset != 3305 offsetof(struct f2fs_super_block, crc)) { 3306 f2fs_info(sbi, "Invalid SB checksum offset: %zu", 3307 crc_offset); 3308 return -EFSCORRUPTED; 3309 } 3310 crc = le32_to_cpu(raw_super->crc); 3311 if (!f2fs_crc_valid(sbi, crc, raw_super, crc_offset)) { 3312 f2fs_info(sbi, "Invalid SB checksum value: %u", crc); 3313 return -EFSCORRUPTED; 3314 } 3315 } 3316 3317 /* Currently, support only 4KB block size */ 3318 if (le32_to_cpu(raw_super->log_blocksize) != F2FS_BLKSIZE_BITS) { 3319 f2fs_info(sbi, "Invalid log_blocksize (%u), supports only %u", 3320 le32_to_cpu(raw_super->log_blocksize), 3321 F2FS_BLKSIZE_BITS); 3322 return -EFSCORRUPTED; 3323 } 3324 3325 /* check log blocks per segment */ 3326 if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) { 3327 f2fs_info(sbi, "Invalid log blocks per segment (%u)", 3328 le32_to_cpu(raw_super->log_blocks_per_seg)); 3329 return -EFSCORRUPTED; 3330 } 3331 3332 /* Currently, support 512/1024/2048/4096 bytes sector size */ 3333 if (le32_to_cpu(raw_super->log_sectorsize) > 3334 F2FS_MAX_LOG_SECTOR_SIZE || 3335 le32_to_cpu(raw_super->log_sectorsize) < 3336 F2FS_MIN_LOG_SECTOR_SIZE) { 3337 f2fs_info(sbi, "Invalid log sectorsize (%u)", 3338 le32_to_cpu(raw_super->log_sectorsize)); 3339 return -EFSCORRUPTED; 3340 } 3341 if (le32_to_cpu(raw_super->log_sectors_per_block) + 3342 le32_to_cpu(raw_super->log_sectorsize) != 3343 F2FS_MAX_LOG_SECTOR_SIZE) { 3344 f2fs_info(sbi, "Invalid log sectors per block(%u) log sectorsize(%u)", 3345 le32_to_cpu(raw_super->log_sectors_per_block), 3346 le32_to_cpu(raw_super->log_sectorsize)); 3347 return -EFSCORRUPTED; 3348 } 3349 3350 segment_count = le32_to_cpu(raw_super->segment_count); 3351 segment_count_main = le32_to_cpu(raw_super->segment_count_main); 3352 segs_per_sec = le32_to_cpu(raw_super->segs_per_sec); 3353 secs_per_zone = le32_to_cpu(raw_super->secs_per_zone); 3354 total_sections = le32_to_cpu(raw_super->section_count); 3355 3356 /* blocks_per_seg should be 512, given the above check */ 3357 blocks_per_seg = 1 << le32_to_cpu(raw_super->log_blocks_per_seg); 3358 3359 if (segment_count > F2FS_MAX_SEGMENT || 3360 segment_count < F2FS_MIN_SEGMENTS) { 3361 f2fs_info(sbi, "Invalid segment count (%u)", segment_count); 3362 return -EFSCORRUPTED; 3363 } 3364 3365 if (total_sections > segment_count_main || total_sections < 1 || 3366 segs_per_sec > segment_count || !segs_per_sec) { 3367 f2fs_info(sbi, "Invalid segment/section count (%u, %u x %u)", 3368 segment_count, total_sections, segs_per_sec); 3369 return -EFSCORRUPTED; 3370 } 3371 3372 if (segment_count_main != total_sections * segs_per_sec) { 3373 f2fs_info(sbi, "Invalid segment/section count (%u != %u * %u)", 3374 segment_count_main, total_sections, segs_per_sec); 3375 return -EFSCORRUPTED; 3376 } 3377 3378 if ((segment_count / segs_per_sec) < total_sections) { 3379 f2fs_info(sbi, "Small segment_count (%u < %u * %u)", 3380 segment_count, segs_per_sec, total_sections); 3381 return -EFSCORRUPTED; 3382 } 3383 3384 if (segment_count > (le64_to_cpu(raw_super->block_count) >> 9)) { 3385 f2fs_info(sbi, "Wrong segment_count / block_count (%u > %llu)", 3386 segment_count, le64_to_cpu(raw_super->block_count)); 3387 return -EFSCORRUPTED; 3388 } 3389 3390 if (RDEV(0).path[0]) { 3391 block_t dev_seg_count = le32_to_cpu(RDEV(0).total_segments); 3392 int i = 1; 3393 3394 while (i < MAX_DEVICES && RDEV(i).path[0]) { 3395 dev_seg_count += le32_to_cpu(RDEV(i).total_segments); 3396 i++; 3397 } 3398 if (segment_count != dev_seg_count) { 3399 f2fs_info(sbi, "Segment count (%u) mismatch with total segments from devices (%u)", 3400 segment_count, dev_seg_count); 3401 return -EFSCORRUPTED; 3402 } 3403 } else { 3404 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_BLKZONED) && 3405 !bdev_is_zoned(sbi->sb->s_bdev)) { 3406 f2fs_info(sbi, "Zoned block device path is missing"); 3407 return -EFSCORRUPTED; 3408 } 3409 } 3410 3411 if (secs_per_zone > total_sections || !secs_per_zone) { 3412 f2fs_info(sbi, "Wrong secs_per_zone / total_sections (%u, %u)", 3413 secs_per_zone, total_sections); 3414 return -EFSCORRUPTED; 3415 } 3416 if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION || 3417 raw_super->hot_ext_count > F2FS_MAX_EXTENSION || 3418 (le32_to_cpu(raw_super->extension_count) + 3419 raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) { 3420 f2fs_info(sbi, "Corrupted extension count (%u + %u > %u)", 3421 le32_to_cpu(raw_super->extension_count), 3422 raw_super->hot_ext_count, 3423 F2FS_MAX_EXTENSION); 3424 return -EFSCORRUPTED; 3425 } 3426 3427 if (le32_to_cpu(raw_super->cp_payload) >= 3428 (blocks_per_seg - F2FS_CP_PACKS - 3429 NR_CURSEG_PERSIST_TYPE)) { 3430 f2fs_info(sbi, "Insane cp_payload (%u >= %u)", 3431 le32_to_cpu(raw_super->cp_payload), 3432 blocks_per_seg - F2FS_CP_PACKS - 3433 NR_CURSEG_PERSIST_TYPE); 3434 return -EFSCORRUPTED; 3435 } 3436 3437 /* check reserved ino info */ 3438 if (le32_to_cpu(raw_super->node_ino) != 1 || 3439 le32_to_cpu(raw_super->meta_ino) != 2 || 3440 le32_to_cpu(raw_super->root_ino) != 3) { 3441 f2fs_info(sbi, "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)", 3442 le32_to_cpu(raw_super->node_ino), 3443 le32_to_cpu(raw_super->meta_ino), 3444 le32_to_cpu(raw_super->root_ino)); 3445 return -EFSCORRUPTED; 3446 } 3447 3448 /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */ 3449 if (sanity_check_area_boundary(sbi, bh)) 3450 return -EFSCORRUPTED; 3451 3452 return 0; 3453 } 3454 3455 int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi) 3456 { 3457 unsigned int total, fsmeta; 3458 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 3459 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 3460 unsigned int ovp_segments, reserved_segments; 3461 unsigned int main_segs, blocks_per_seg; 3462 unsigned int sit_segs, nat_segs; 3463 unsigned int sit_bitmap_size, nat_bitmap_size; 3464 unsigned int log_blocks_per_seg; 3465 unsigned int segment_count_main; 3466 unsigned int cp_pack_start_sum, cp_payload; 3467 block_t user_block_count, valid_user_blocks; 3468 block_t avail_node_count, valid_node_count; 3469 unsigned int nat_blocks, nat_bits_bytes, nat_bits_blocks; 3470 int i, j; 3471 3472 total = le32_to_cpu(raw_super->segment_count); 3473 fsmeta = le32_to_cpu(raw_super->segment_count_ckpt); 3474 sit_segs = le32_to_cpu(raw_super->segment_count_sit); 3475 fsmeta += sit_segs; 3476 nat_segs = le32_to_cpu(raw_super->segment_count_nat); 3477 fsmeta += nat_segs; 3478 fsmeta += le32_to_cpu(ckpt->rsvd_segment_count); 3479 fsmeta += le32_to_cpu(raw_super->segment_count_ssa); 3480 3481 if (unlikely(fsmeta >= total)) 3482 return 1; 3483 3484 ovp_segments = le32_to_cpu(ckpt->overprov_segment_count); 3485 reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count); 3486 3487 if (!f2fs_sb_has_readonly(sbi) && 3488 unlikely(fsmeta < F2FS_MIN_META_SEGMENTS || 3489 ovp_segments == 0 || reserved_segments == 0)) { 3490 f2fs_err(sbi, "Wrong layout: check mkfs.f2fs version"); 3491 return 1; 3492 } 3493 user_block_count = le64_to_cpu(ckpt->user_block_count); 3494 segment_count_main = le32_to_cpu(raw_super->segment_count_main) + 3495 (f2fs_sb_has_readonly(sbi) ? 1 : 0); 3496 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); 3497 if (!user_block_count || user_block_count >= 3498 segment_count_main << log_blocks_per_seg) { 3499 f2fs_err(sbi, "Wrong user_block_count: %u", 3500 user_block_count); 3501 return 1; 3502 } 3503 3504 valid_user_blocks = le64_to_cpu(ckpt->valid_block_count); 3505 if (valid_user_blocks > user_block_count) { 3506 f2fs_err(sbi, "Wrong valid_user_blocks: %u, user_block_count: %u", 3507 valid_user_blocks, user_block_count); 3508 return 1; 3509 } 3510 3511 valid_node_count = le32_to_cpu(ckpt->valid_node_count); 3512 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM; 3513 if (valid_node_count > avail_node_count) { 3514 f2fs_err(sbi, "Wrong valid_node_count: %u, avail_node_count: %u", 3515 valid_node_count, avail_node_count); 3516 return 1; 3517 } 3518 3519 main_segs = le32_to_cpu(raw_super->segment_count_main); 3520 blocks_per_seg = sbi->blocks_per_seg; 3521 3522 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { 3523 if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs || 3524 le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg) 3525 return 1; 3526 3527 if (f2fs_sb_has_readonly(sbi)) 3528 goto check_data; 3529 3530 for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) { 3531 if (le32_to_cpu(ckpt->cur_node_segno[i]) == 3532 le32_to_cpu(ckpt->cur_node_segno[j])) { 3533 f2fs_err(sbi, "Node segment (%u, %u) has the same segno: %u", 3534 i, j, 3535 le32_to_cpu(ckpt->cur_node_segno[i])); 3536 return 1; 3537 } 3538 } 3539 } 3540 check_data: 3541 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) { 3542 if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs || 3543 le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg) 3544 return 1; 3545 3546 if (f2fs_sb_has_readonly(sbi)) 3547 goto skip_cross; 3548 3549 for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) { 3550 if (le32_to_cpu(ckpt->cur_data_segno[i]) == 3551 le32_to_cpu(ckpt->cur_data_segno[j])) { 3552 f2fs_err(sbi, "Data segment (%u, %u) has the same segno: %u", 3553 i, j, 3554 le32_to_cpu(ckpt->cur_data_segno[i])); 3555 return 1; 3556 } 3557 } 3558 } 3559 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { 3560 for (j = 0; j < NR_CURSEG_DATA_TYPE; j++) { 3561 if (le32_to_cpu(ckpt->cur_node_segno[i]) == 3562 le32_to_cpu(ckpt->cur_data_segno[j])) { 3563 f2fs_err(sbi, "Node segment (%u) and Data segment (%u) has the same segno: %u", 3564 i, j, 3565 le32_to_cpu(ckpt->cur_node_segno[i])); 3566 return 1; 3567 } 3568 } 3569 } 3570 skip_cross: 3571 sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize); 3572 nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize); 3573 3574 if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 || 3575 nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) { 3576 f2fs_err(sbi, "Wrong bitmap size: sit: %u, nat:%u", 3577 sit_bitmap_size, nat_bitmap_size); 3578 return 1; 3579 } 3580 3581 cp_pack_start_sum = __start_sum_addr(sbi); 3582 cp_payload = __cp_payload(sbi); 3583 if (cp_pack_start_sum < cp_payload + 1 || 3584 cp_pack_start_sum > blocks_per_seg - 1 - 3585 NR_CURSEG_PERSIST_TYPE) { 3586 f2fs_err(sbi, "Wrong cp_pack_start_sum: %u", 3587 cp_pack_start_sum); 3588 return 1; 3589 } 3590 3591 if (__is_set_ckpt_flags(ckpt, CP_LARGE_NAT_BITMAP_FLAG) && 3592 le32_to_cpu(ckpt->checksum_offset) != CP_MIN_CHKSUM_OFFSET) { 3593 f2fs_warn(sbi, "using deprecated layout of large_nat_bitmap, " 3594 "please run fsck v1.13.0 or higher to repair, chksum_offset: %u, " 3595 "fixed with patch: \"f2fs-tools: relocate chksum_offset for large_nat_bitmap feature\"", 3596 le32_to_cpu(ckpt->checksum_offset)); 3597 return 1; 3598 } 3599 3600 nat_blocks = nat_segs << log_blocks_per_seg; 3601 nat_bits_bytes = nat_blocks / BITS_PER_BYTE; 3602 nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8); 3603 if (__is_set_ckpt_flags(ckpt, CP_NAT_BITS_FLAG) && 3604 (cp_payload + F2FS_CP_PACKS + 3605 NR_CURSEG_PERSIST_TYPE + nat_bits_blocks >= blocks_per_seg)) { 3606 f2fs_warn(sbi, "Insane cp_payload: %u, nat_bits_blocks: %u)", 3607 cp_payload, nat_bits_blocks); 3608 return 1; 3609 } 3610 3611 if (unlikely(f2fs_cp_error(sbi))) { 3612 f2fs_err(sbi, "A bug case: need to run fsck"); 3613 return 1; 3614 } 3615 return 0; 3616 } 3617 3618 static void init_sb_info(struct f2fs_sb_info *sbi) 3619 { 3620 struct f2fs_super_block *raw_super = sbi->raw_super; 3621 int i; 3622 3623 sbi->log_sectors_per_block = 3624 le32_to_cpu(raw_super->log_sectors_per_block); 3625 sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize); 3626 sbi->blocksize = 1 << sbi->log_blocksize; 3627 sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); 3628 sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg; 3629 sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec); 3630 sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone); 3631 sbi->total_sections = le32_to_cpu(raw_super->section_count); 3632 sbi->total_node_count = 3633 (le32_to_cpu(raw_super->segment_count_nat) / 2) 3634 * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK; 3635 F2FS_ROOT_INO(sbi) = le32_to_cpu(raw_super->root_ino); 3636 F2FS_NODE_INO(sbi) = le32_to_cpu(raw_super->node_ino); 3637 F2FS_META_INO(sbi) = le32_to_cpu(raw_super->meta_ino); 3638 sbi->cur_victim_sec = NULL_SECNO; 3639 sbi->gc_mode = GC_NORMAL; 3640 sbi->next_victim_seg[BG_GC] = NULL_SEGNO; 3641 sbi->next_victim_seg[FG_GC] = NULL_SEGNO; 3642 sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH; 3643 sbi->migration_granularity = sbi->segs_per_sec; 3644 sbi->seq_file_ra_mul = MIN_RA_MUL; 3645 sbi->max_fragment_chunk = DEF_FRAGMENT_SIZE; 3646 sbi->max_fragment_hole = DEF_FRAGMENT_SIZE; 3647 spin_lock_init(&sbi->gc_remaining_trials_lock); 3648 atomic64_set(&sbi->current_atomic_write, 0); 3649 3650 sbi->dir_level = DEF_DIR_LEVEL; 3651 sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL; 3652 sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL; 3653 sbi->interval_time[DISCARD_TIME] = DEF_IDLE_INTERVAL; 3654 sbi->interval_time[GC_TIME] = DEF_IDLE_INTERVAL; 3655 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_INTERVAL; 3656 sbi->interval_time[UMOUNT_DISCARD_TIMEOUT] = 3657 DEF_UMOUNT_DISCARD_TIMEOUT; 3658 clear_sbi_flag(sbi, SBI_NEED_FSCK); 3659 3660 for (i = 0; i < NR_COUNT_TYPE; i++) 3661 atomic_set(&sbi->nr_pages[i], 0); 3662 3663 for (i = 0; i < META; i++) 3664 atomic_set(&sbi->wb_sync_req[i], 0); 3665 3666 INIT_LIST_HEAD(&sbi->s_list); 3667 mutex_init(&sbi->umount_mutex); 3668 init_f2fs_rwsem(&sbi->io_order_lock); 3669 spin_lock_init(&sbi->cp_lock); 3670 3671 sbi->dirty_device = 0; 3672 spin_lock_init(&sbi->dev_lock); 3673 3674 init_f2fs_rwsem(&sbi->sb_lock); 3675 init_f2fs_rwsem(&sbi->pin_sem); 3676 } 3677 3678 static int init_percpu_info(struct f2fs_sb_info *sbi) 3679 { 3680 int err; 3681 3682 err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL); 3683 if (err) 3684 return err; 3685 3686 err = percpu_counter_init(&sbi->rf_node_block_count, 0, GFP_KERNEL); 3687 if (err) 3688 goto err_valid_block; 3689 3690 err = percpu_counter_init(&sbi->total_valid_inode_count, 0, 3691 GFP_KERNEL); 3692 if (err) 3693 goto err_node_block; 3694 return 0; 3695 3696 err_node_block: 3697 percpu_counter_destroy(&sbi->rf_node_block_count); 3698 err_valid_block: 3699 percpu_counter_destroy(&sbi->alloc_valid_block_count); 3700 return err; 3701 } 3702 3703 #ifdef CONFIG_BLK_DEV_ZONED 3704 3705 struct f2fs_report_zones_args { 3706 struct f2fs_sb_info *sbi; 3707 struct f2fs_dev_info *dev; 3708 }; 3709 3710 static int f2fs_report_zone_cb(struct blk_zone *zone, unsigned int idx, 3711 void *data) 3712 { 3713 struct f2fs_report_zones_args *rz_args = data; 3714 block_t unusable_blocks = (zone->len - zone->capacity) >> 3715 F2FS_LOG_SECTORS_PER_BLOCK; 3716 3717 if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL) 3718 return 0; 3719 3720 set_bit(idx, rz_args->dev->blkz_seq); 3721 if (!rz_args->sbi->unusable_blocks_per_sec) { 3722 rz_args->sbi->unusable_blocks_per_sec = unusable_blocks; 3723 return 0; 3724 } 3725 if (rz_args->sbi->unusable_blocks_per_sec != unusable_blocks) { 3726 f2fs_err(rz_args->sbi, "F2FS supports single zone capacity\n"); 3727 return -EINVAL; 3728 } 3729 return 0; 3730 } 3731 3732 static int init_blkz_info(struct f2fs_sb_info *sbi, int devi) 3733 { 3734 struct block_device *bdev = FDEV(devi).bdev; 3735 sector_t nr_sectors = bdev_nr_sectors(bdev); 3736 struct f2fs_report_zones_args rep_zone_arg; 3737 u64 zone_sectors; 3738 int ret; 3739 3740 if (!f2fs_sb_has_blkzoned(sbi)) 3741 return 0; 3742 3743 zone_sectors = bdev_zone_sectors(bdev); 3744 if (!is_power_of_2(zone_sectors)) { 3745 f2fs_err(sbi, "F2FS does not support non power of 2 zone sizes\n"); 3746 return -EINVAL; 3747 } 3748 3749 if (sbi->blocks_per_blkz && sbi->blocks_per_blkz != 3750 SECTOR_TO_BLOCK(zone_sectors)) 3751 return -EINVAL; 3752 sbi->blocks_per_blkz = SECTOR_TO_BLOCK(zone_sectors); 3753 if (sbi->log_blocks_per_blkz && sbi->log_blocks_per_blkz != 3754 __ilog2_u32(sbi->blocks_per_blkz)) 3755 return -EINVAL; 3756 sbi->log_blocks_per_blkz = __ilog2_u32(sbi->blocks_per_blkz); 3757 FDEV(devi).nr_blkz = SECTOR_TO_BLOCK(nr_sectors) >> 3758 sbi->log_blocks_per_blkz; 3759 if (nr_sectors & (zone_sectors - 1)) 3760 FDEV(devi).nr_blkz++; 3761 3762 FDEV(devi).blkz_seq = f2fs_kvzalloc(sbi, 3763 BITS_TO_LONGS(FDEV(devi).nr_blkz) 3764 * sizeof(unsigned long), 3765 GFP_KERNEL); 3766 if (!FDEV(devi).blkz_seq) 3767 return -ENOMEM; 3768 3769 rep_zone_arg.sbi = sbi; 3770 rep_zone_arg.dev = &FDEV(devi); 3771 3772 ret = blkdev_report_zones(bdev, 0, BLK_ALL_ZONES, f2fs_report_zone_cb, 3773 &rep_zone_arg); 3774 if (ret < 0) 3775 return ret; 3776 return 0; 3777 } 3778 #endif 3779 3780 /* 3781 * Read f2fs raw super block. 3782 * Because we have two copies of super block, so read both of them 3783 * to get the first valid one. If any one of them is broken, we pass 3784 * them recovery flag back to the caller. 3785 */ 3786 static int read_raw_super_block(struct f2fs_sb_info *sbi, 3787 struct f2fs_super_block **raw_super, 3788 int *valid_super_block, int *recovery) 3789 { 3790 struct super_block *sb = sbi->sb; 3791 int block; 3792 struct buffer_head *bh; 3793 struct f2fs_super_block *super; 3794 int err = 0; 3795 3796 super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL); 3797 if (!super) 3798 return -ENOMEM; 3799 3800 for (block = 0; block < 2; block++) { 3801 bh = sb_bread(sb, block); 3802 if (!bh) { 3803 f2fs_err(sbi, "Unable to read %dth superblock", 3804 block + 1); 3805 err = -EIO; 3806 *recovery = 1; 3807 continue; 3808 } 3809 3810 /* sanity checking of raw super */ 3811 err = sanity_check_raw_super(sbi, bh); 3812 if (err) { 3813 f2fs_err(sbi, "Can't find valid F2FS filesystem in %dth superblock", 3814 block + 1); 3815 brelse(bh); 3816 *recovery = 1; 3817 continue; 3818 } 3819 3820 if (!*raw_super) { 3821 memcpy(super, bh->b_data + F2FS_SUPER_OFFSET, 3822 sizeof(*super)); 3823 *valid_super_block = block; 3824 *raw_super = super; 3825 } 3826 brelse(bh); 3827 } 3828 3829 /* No valid superblock */ 3830 if (!*raw_super) 3831 kfree(super); 3832 else 3833 err = 0; 3834 3835 return err; 3836 } 3837 3838 int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover) 3839 { 3840 struct buffer_head *bh; 3841 __u32 crc = 0; 3842 int err; 3843 3844 if ((recover && f2fs_readonly(sbi->sb)) || 3845 bdev_read_only(sbi->sb->s_bdev)) { 3846 set_sbi_flag(sbi, SBI_NEED_SB_WRITE); 3847 return -EROFS; 3848 } 3849 3850 /* we should update superblock crc here */ 3851 if (!recover && f2fs_sb_has_sb_chksum(sbi)) { 3852 crc = f2fs_crc32(sbi, F2FS_RAW_SUPER(sbi), 3853 offsetof(struct f2fs_super_block, crc)); 3854 F2FS_RAW_SUPER(sbi)->crc = cpu_to_le32(crc); 3855 } 3856 3857 /* write back-up superblock first */ 3858 bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1); 3859 if (!bh) 3860 return -EIO; 3861 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi)); 3862 brelse(bh); 3863 3864 /* if we are in recovery path, skip writing valid superblock */ 3865 if (recover || err) 3866 return err; 3867 3868 /* write current valid superblock */ 3869 bh = sb_bread(sbi->sb, sbi->valid_super_block); 3870 if (!bh) 3871 return -EIO; 3872 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi)); 3873 brelse(bh); 3874 return err; 3875 } 3876 3877 void f2fs_handle_stop(struct f2fs_sb_info *sbi, unsigned char reason) 3878 { 3879 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 3880 int err; 3881 3882 f2fs_down_write(&sbi->sb_lock); 3883 3884 if (raw_super->s_stop_reason[reason] < ((1 << BITS_PER_BYTE) - 1)) 3885 raw_super->s_stop_reason[reason]++; 3886 3887 err = f2fs_commit_super(sbi, false); 3888 if (err) 3889 f2fs_err(sbi, "f2fs_commit_super fails to record reason:%u err:%d", 3890 reason, err); 3891 f2fs_up_write(&sbi->sb_lock); 3892 } 3893 3894 static void f2fs_save_errors(struct f2fs_sb_info *sbi, unsigned char flag) 3895 { 3896 spin_lock(&sbi->error_lock); 3897 if (!test_bit(flag, (unsigned long *)sbi->errors)) { 3898 set_bit(flag, (unsigned long *)sbi->errors); 3899 sbi->error_dirty = true; 3900 } 3901 spin_unlock(&sbi->error_lock); 3902 } 3903 3904 static bool f2fs_update_errors(struct f2fs_sb_info *sbi) 3905 { 3906 bool need_update = false; 3907 3908 spin_lock(&sbi->error_lock); 3909 if (sbi->error_dirty) { 3910 memcpy(F2FS_RAW_SUPER(sbi)->s_errors, sbi->errors, 3911 MAX_F2FS_ERRORS); 3912 sbi->error_dirty = false; 3913 need_update = true; 3914 } 3915 spin_unlock(&sbi->error_lock); 3916 3917 return need_update; 3918 } 3919 3920 void f2fs_handle_error(struct f2fs_sb_info *sbi, unsigned char error) 3921 { 3922 int err; 3923 3924 f2fs_save_errors(sbi, error); 3925 3926 f2fs_down_write(&sbi->sb_lock); 3927 3928 if (!f2fs_update_errors(sbi)) 3929 goto out_unlock; 3930 3931 err = f2fs_commit_super(sbi, false); 3932 if (err) 3933 f2fs_err(sbi, "f2fs_commit_super fails to record errors:%u, err:%d", 3934 error, err); 3935 out_unlock: 3936 f2fs_up_write(&sbi->sb_lock); 3937 } 3938 3939 static int f2fs_scan_devices(struct f2fs_sb_info *sbi) 3940 { 3941 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 3942 unsigned int max_devices = MAX_DEVICES; 3943 unsigned int logical_blksize; 3944 int i; 3945 3946 /* Initialize single device information */ 3947 if (!RDEV(0).path[0]) { 3948 if (!bdev_is_zoned(sbi->sb->s_bdev)) 3949 return 0; 3950 max_devices = 1; 3951 } 3952 3953 /* 3954 * Initialize multiple devices information, or single 3955 * zoned block device information. 3956 */ 3957 sbi->devs = f2fs_kzalloc(sbi, 3958 array_size(max_devices, 3959 sizeof(struct f2fs_dev_info)), 3960 GFP_KERNEL); 3961 if (!sbi->devs) 3962 return -ENOMEM; 3963 3964 logical_blksize = bdev_logical_block_size(sbi->sb->s_bdev); 3965 sbi->aligned_blksize = true; 3966 3967 for (i = 0; i < max_devices; i++) { 3968 3969 if (i > 0 && !RDEV(i).path[0]) 3970 break; 3971 3972 if (max_devices == 1) { 3973 /* Single zoned block device mount */ 3974 FDEV(0).bdev = 3975 blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev, 3976 sbi->sb->s_mode, sbi->sb->s_type); 3977 } else { 3978 /* Multi-device mount */ 3979 memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN); 3980 FDEV(i).total_segments = 3981 le32_to_cpu(RDEV(i).total_segments); 3982 if (i == 0) { 3983 FDEV(i).start_blk = 0; 3984 FDEV(i).end_blk = FDEV(i).start_blk + 3985 (FDEV(i).total_segments << 3986 sbi->log_blocks_per_seg) - 1 + 3987 le32_to_cpu(raw_super->segment0_blkaddr); 3988 } else { 3989 FDEV(i).start_blk = FDEV(i - 1).end_blk + 1; 3990 FDEV(i).end_blk = FDEV(i).start_blk + 3991 (FDEV(i).total_segments << 3992 sbi->log_blocks_per_seg) - 1; 3993 } 3994 FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path, 3995 sbi->sb->s_mode, sbi->sb->s_type); 3996 } 3997 if (IS_ERR(FDEV(i).bdev)) 3998 return PTR_ERR(FDEV(i).bdev); 3999 4000 /* to release errored devices */ 4001 sbi->s_ndevs = i + 1; 4002 4003 if (logical_blksize != bdev_logical_block_size(FDEV(i).bdev)) 4004 sbi->aligned_blksize = false; 4005 4006 #ifdef CONFIG_BLK_DEV_ZONED 4007 if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM && 4008 !f2fs_sb_has_blkzoned(sbi)) { 4009 f2fs_err(sbi, "Zoned block device feature not enabled"); 4010 return -EINVAL; 4011 } 4012 if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) { 4013 if (init_blkz_info(sbi, i)) { 4014 f2fs_err(sbi, "Failed to initialize F2FS blkzone information"); 4015 return -EINVAL; 4016 } 4017 if (max_devices == 1) 4018 break; 4019 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)", 4020 i, FDEV(i).path, 4021 FDEV(i).total_segments, 4022 FDEV(i).start_blk, FDEV(i).end_blk, 4023 bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ? 4024 "Host-aware" : "Host-managed"); 4025 continue; 4026 } 4027 #endif 4028 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x", 4029 i, FDEV(i).path, 4030 FDEV(i).total_segments, 4031 FDEV(i).start_blk, FDEV(i).end_blk); 4032 } 4033 f2fs_info(sbi, 4034 "IO Block Size: %8d KB", F2FS_IO_SIZE_KB(sbi)); 4035 return 0; 4036 } 4037 4038 static int f2fs_setup_casefold(struct f2fs_sb_info *sbi) 4039 { 4040 #if IS_ENABLED(CONFIG_UNICODE) 4041 if (f2fs_sb_has_casefold(sbi) && !sbi->sb->s_encoding) { 4042 const struct f2fs_sb_encodings *encoding_info; 4043 struct unicode_map *encoding; 4044 __u16 encoding_flags; 4045 4046 encoding_info = f2fs_sb_read_encoding(sbi->raw_super); 4047 if (!encoding_info) { 4048 f2fs_err(sbi, 4049 "Encoding requested by superblock is unknown"); 4050 return -EINVAL; 4051 } 4052 4053 encoding_flags = le16_to_cpu(sbi->raw_super->s_encoding_flags); 4054 encoding = utf8_load(encoding_info->version); 4055 if (IS_ERR(encoding)) { 4056 f2fs_err(sbi, 4057 "can't mount with superblock charset: %s-%u.%u.%u " 4058 "not supported by the kernel. flags: 0x%x.", 4059 encoding_info->name, 4060 unicode_major(encoding_info->version), 4061 unicode_minor(encoding_info->version), 4062 unicode_rev(encoding_info->version), 4063 encoding_flags); 4064 return PTR_ERR(encoding); 4065 } 4066 f2fs_info(sbi, "Using encoding defined by superblock: " 4067 "%s-%u.%u.%u with flags 0x%hx", encoding_info->name, 4068 unicode_major(encoding_info->version), 4069 unicode_minor(encoding_info->version), 4070 unicode_rev(encoding_info->version), 4071 encoding_flags); 4072 4073 sbi->sb->s_encoding = encoding; 4074 sbi->sb->s_encoding_flags = encoding_flags; 4075 } 4076 #else 4077 if (f2fs_sb_has_casefold(sbi)) { 4078 f2fs_err(sbi, "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE"); 4079 return -EINVAL; 4080 } 4081 #endif 4082 return 0; 4083 } 4084 4085 static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi) 4086 { 4087 /* adjust parameters according to the volume size */ 4088 if (MAIN_SEGS(sbi) <= SMALL_VOLUME_SEGMENTS) { 4089 if (f2fs_block_unit_discard(sbi)) 4090 SM_I(sbi)->dcc_info->discard_granularity = 4091 MIN_DISCARD_GRANULARITY; 4092 SM_I(sbi)->ipu_policy = 1 << F2FS_IPU_FORCE | 4093 1 << F2FS_IPU_HONOR_OPU_WRITE; 4094 } 4095 4096 sbi->readdir_ra = true; 4097 } 4098 4099 static int f2fs_fill_super(struct super_block *sb, void *data, int silent) 4100 { 4101 struct f2fs_sb_info *sbi; 4102 struct f2fs_super_block *raw_super; 4103 struct inode *root; 4104 int err; 4105 bool skip_recovery = false, need_fsck = false; 4106 char *options = NULL; 4107 int recovery, i, valid_super_block; 4108 struct curseg_info *seg_i; 4109 int retry_cnt = 1; 4110 4111 try_onemore: 4112 err = -EINVAL; 4113 raw_super = NULL; 4114 valid_super_block = -1; 4115 recovery = 0; 4116 4117 /* allocate memory for f2fs-specific super block info */ 4118 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL); 4119 if (!sbi) 4120 return -ENOMEM; 4121 4122 sbi->sb = sb; 4123 4124 /* initialize locks within allocated memory */ 4125 init_f2fs_rwsem(&sbi->gc_lock); 4126 mutex_init(&sbi->writepages); 4127 init_f2fs_rwsem(&sbi->cp_global_sem); 4128 init_f2fs_rwsem(&sbi->node_write); 4129 init_f2fs_rwsem(&sbi->node_change); 4130 spin_lock_init(&sbi->stat_lock); 4131 init_f2fs_rwsem(&sbi->cp_rwsem); 4132 init_f2fs_rwsem(&sbi->quota_sem); 4133 init_waitqueue_head(&sbi->cp_wait); 4134 spin_lock_init(&sbi->error_lock); 4135 4136 for (i = 0; i < NR_INODE_TYPE; i++) { 4137 INIT_LIST_HEAD(&sbi->inode_list[i]); 4138 spin_lock_init(&sbi->inode_lock[i]); 4139 } 4140 mutex_init(&sbi->flush_lock); 4141 4142 /* Load the checksum driver */ 4143 sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0); 4144 if (IS_ERR(sbi->s_chksum_driver)) { 4145 f2fs_err(sbi, "Cannot load crc32 driver."); 4146 err = PTR_ERR(sbi->s_chksum_driver); 4147 sbi->s_chksum_driver = NULL; 4148 goto free_sbi; 4149 } 4150 4151 /* set a block size */ 4152 if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) { 4153 f2fs_err(sbi, "unable to set blocksize"); 4154 goto free_sbi; 4155 } 4156 4157 err = read_raw_super_block(sbi, &raw_super, &valid_super_block, 4158 &recovery); 4159 if (err) 4160 goto free_sbi; 4161 4162 sb->s_fs_info = sbi; 4163 sbi->raw_super = raw_super; 4164 4165 memcpy(sbi->errors, raw_super->s_errors, MAX_F2FS_ERRORS); 4166 4167 /* precompute checksum seed for metadata */ 4168 if (f2fs_sb_has_inode_chksum(sbi)) 4169 sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid, 4170 sizeof(raw_super->uuid)); 4171 4172 default_options(sbi); 4173 /* parse mount options */ 4174 options = kstrdup((const char *)data, GFP_KERNEL); 4175 if (data && !options) { 4176 err = -ENOMEM; 4177 goto free_sb_buf; 4178 } 4179 4180 err = parse_options(sb, options, false); 4181 if (err) 4182 goto free_options; 4183 4184 sb->s_maxbytes = max_file_blocks(NULL) << 4185 le32_to_cpu(raw_super->log_blocksize); 4186 sb->s_max_links = F2FS_LINK_MAX; 4187 4188 err = f2fs_setup_casefold(sbi); 4189 if (err) 4190 goto free_options; 4191 4192 #ifdef CONFIG_QUOTA 4193 sb->dq_op = &f2fs_quota_operations; 4194 sb->s_qcop = &f2fs_quotactl_ops; 4195 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ; 4196 4197 if (f2fs_sb_has_quota_ino(sbi)) { 4198 for (i = 0; i < MAXQUOTAS; i++) { 4199 if (f2fs_qf_ino(sbi->sb, i)) 4200 sbi->nquota_files++; 4201 } 4202 } 4203 #endif 4204 4205 sb->s_op = &f2fs_sops; 4206 #ifdef CONFIG_FS_ENCRYPTION 4207 sb->s_cop = &f2fs_cryptops; 4208 #endif 4209 #ifdef CONFIG_FS_VERITY 4210 sb->s_vop = &f2fs_verityops; 4211 #endif 4212 sb->s_xattr = f2fs_xattr_handlers; 4213 sb->s_export_op = &f2fs_export_ops; 4214 sb->s_magic = F2FS_SUPER_MAGIC; 4215 sb->s_time_gran = 1; 4216 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) | 4217 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0); 4218 memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid)); 4219 sb->s_iflags |= SB_I_CGROUPWB; 4220 4221 /* init f2fs-specific super block info */ 4222 sbi->valid_super_block = valid_super_block; 4223 4224 /* disallow all the data/node/meta page writes */ 4225 set_sbi_flag(sbi, SBI_POR_DOING); 4226 4227 err = f2fs_init_write_merge_io(sbi); 4228 if (err) 4229 goto free_bio_info; 4230 4231 init_sb_info(sbi); 4232 4233 err = f2fs_init_iostat(sbi); 4234 if (err) 4235 goto free_bio_info; 4236 4237 err = init_percpu_info(sbi); 4238 if (err) 4239 goto free_iostat; 4240 4241 if (F2FS_IO_ALIGNED(sbi)) { 4242 sbi->write_io_dummy = 4243 mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0); 4244 if (!sbi->write_io_dummy) { 4245 err = -ENOMEM; 4246 goto free_percpu; 4247 } 4248 } 4249 4250 /* init per sbi slab cache */ 4251 err = f2fs_init_xattr_caches(sbi); 4252 if (err) 4253 goto free_io_dummy; 4254 err = f2fs_init_page_array_cache(sbi); 4255 if (err) 4256 goto free_xattr_cache; 4257 4258 /* get an inode for meta space */ 4259 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi)); 4260 if (IS_ERR(sbi->meta_inode)) { 4261 f2fs_err(sbi, "Failed to read F2FS meta data inode"); 4262 err = PTR_ERR(sbi->meta_inode); 4263 goto free_page_array_cache; 4264 } 4265 4266 err = f2fs_get_valid_checkpoint(sbi); 4267 if (err) { 4268 f2fs_err(sbi, "Failed to get valid F2FS checkpoint"); 4269 goto free_meta_inode; 4270 } 4271 4272 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_QUOTA_NEED_FSCK_FLAG)) 4273 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 4274 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_DISABLED_QUICK_FLAG)) { 4275 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK); 4276 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL; 4277 } 4278 4279 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FSCK_FLAG)) 4280 set_sbi_flag(sbi, SBI_NEED_FSCK); 4281 4282 /* Initialize device list */ 4283 err = f2fs_scan_devices(sbi); 4284 if (err) { 4285 f2fs_err(sbi, "Failed to find devices"); 4286 goto free_devices; 4287 } 4288 4289 err = f2fs_init_post_read_wq(sbi); 4290 if (err) { 4291 f2fs_err(sbi, "Failed to initialize post read workqueue"); 4292 goto free_devices; 4293 } 4294 4295 sbi->total_valid_node_count = 4296 le32_to_cpu(sbi->ckpt->valid_node_count); 4297 percpu_counter_set(&sbi->total_valid_inode_count, 4298 le32_to_cpu(sbi->ckpt->valid_inode_count)); 4299 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count); 4300 sbi->total_valid_block_count = 4301 le64_to_cpu(sbi->ckpt->valid_block_count); 4302 sbi->last_valid_block_count = sbi->total_valid_block_count; 4303 sbi->reserved_blocks = 0; 4304 sbi->current_reserved_blocks = 0; 4305 limit_reserve_root(sbi); 4306 adjust_unusable_cap_perc(sbi); 4307 4308 f2fs_init_extent_cache_info(sbi); 4309 4310 f2fs_init_ino_entry_info(sbi); 4311 4312 f2fs_init_fsync_node_info(sbi); 4313 4314 /* setup checkpoint request control and start checkpoint issue thread */ 4315 f2fs_init_ckpt_req_control(sbi); 4316 if (!f2fs_readonly(sb) && !test_opt(sbi, DISABLE_CHECKPOINT) && 4317 test_opt(sbi, MERGE_CHECKPOINT)) { 4318 err = f2fs_start_ckpt_thread(sbi); 4319 if (err) { 4320 f2fs_err(sbi, 4321 "Failed to start F2FS issue_checkpoint_thread (%d)", 4322 err); 4323 goto stop_ckpt_thread; 4324 } 4325 } 4326 4327 /* setup f2fs internal modules */ 4328 err = f2fs_build_segment_manager(sbi); 4329 if (err) { 4330 f2fs_err(sbi, "Failed to initialize F2FS segment manager (%d)", 4331 err); 4332 goto free_sm; 4333 } 4334 err = f2fs_build_node_manager(sbi); 4335 if (err) { 4336 f2fs_err(sbi, "Failed to initialize F2FS node manager (%d)", 4337 err); 4338 goto free_nm; 4339 } 4340 4341 err = adjust_reserved_segment(sbi); 4342 if (err) 4343 goto free_nm; 4344 4345 /* For write statistics */ 4346 sbi->sectors_written_start = f2fs_get_sectors_written(sbi); 4347 4348 /* Read accumulated write IO statistics if exists */ 4349 seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE); 4350 if (__exist_node_summaries(sbi)) 4351 sbi->kbytes_written = 4352 le64_to_cpu(seg_i->journal->info.kbytes_written); 4353 4354 f2fs_build_gc_manager(sbi); 4355 4356 err = f2fs_build_stats(sbi); 4357 if (err) 4358 goto free_nm; 4359 4360 /* get an inode for node space */ 4361 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi)); 4362 if (IS_ERR(sbi->node_inode)) { 4363 f2fs_err(sbi, "Failed to read node inode"); 4364 err = PTR_ERR(sbi->node_inode); 4365 goto free_stats; 4366 } 4367 4368 /* read root inode and dentry */ 4369 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi)); 4370 if (IS_ERR(root)) { 4371 f2fs_err(sbi, "Failed to read root inode"); 4372 err = PTR_ERR(root); 4373 goto free_node_inode; 4374 } 4375 if (!S_ISDIR(root->i_mode) || !root->i_blocks || 4376 !root->i_size || !root->i_nlink) { 4377 iput(root); 4378 err = -EINVAL; 4379 goto free_node_inode; 4380 } 4381 4382 sb->s_root = d_make_root(root); /* allocate root dentry */ 4383 if (!sb->s_root) { 4384 err = -ENOMEM; 4385 goto free_node_inode; 4386 } 4387 4388 err = f2fs_init_compress_inode(sbi); 4389 if (err) 4390 goto free_root_inode; 4391 4392 err = f2fs_register_sysfs(sbi); 4393 if (err) 4394 goto free_compress_inode; 4395 4396 #ifdef CONFIG_QUOTA 4397 /* Enable quota usage during mount */ 4398 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) { 4399 err = f2fs_enable_quotas(sb); 4400 if (err) 4401 f2fs_err(sbi, "Cannot turn on quotas: error %d", err); 4402 } 4403 #endif 4404 /* if there are any orphan inodes, free them */ 4405 err = f2fs_recover_orphan_inodes(sbi); 4406 if (err) 4407 goto free_meta; 4408 4409 if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG))) 4410 goto reset_checkpoint; 4411 4412 /* recover fsynced data */ 4413 if (!test_opt(sbi, DISABLE_ROLL_FORWARD) && 4414 !test_opt(sbi, NORECOVERY)) { 4415 /* 4416 * mount should be failed, when device has readonly mode, and 4417 * previous checkpoint was not done by clean system shutdown. 4418 */ 4419 if (f2fs_hw_is_readonly(sbi)) { 4420 if (!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) { 4421 err = f2fs_recover_fsync_data(sbi, true); 4422 if (err > 0) { 4423 err = -EROFS; 4424 f2fs_err(sbi, "Need to recover fsync data, but " 4425 "write access unavailable, please try " 4426 "mount w/ disable_roll_forward or norecovery"); 4427 } 4428 if (err < 0) 4429 goto free_meta; 4430 } 4431 f2fs_info(sbi, "write access unavailable, skipping recovery"); 4432 goto reset_checkpoint; 4433 } 4434 4435 if (need_fsck) 4436 set_sbi_flag(sbi, SBI_NEED_FSCK); 4437 4438 if (skip_recovery) 4439 goto reset_checkpoint; 4440 4441 err = f2fs_recover_fsync_data(sbi, false); 4442 if (err < 0) { 4443 if (err != -ENOMEM) 4444 skip_recovery = true; 4445 need_fsck = true; 4446 f2fs_err(sbi, "Cannot recover all fsync data errno=%d", 4447 err); 4448 goto free_meta; 4449 } 4450 } else { 4451 err = f2fs_recover_fsync_data(sbi, true); 4452 4453 if (!f2fs_readonly(sb) && err > 0) { 4454 err = -EINVAL; 4455 f2fs_err(sbi, "Need to recover fsync data"); 4456 goto free_meta; 4457 } 4458 } 4459 4460 /* 4461 * If the f2fs is not readonly and fsync data recovery succeeds, 4462 * check zoned block devices' write pointer consistency. 4463 */ 4464 if (!err && !f2fs_readonly(sb) && f2fs_sb_has_blkzoned(sbi)) { 4465 err = f2fs_check_write_pointer(sbi); 4466 if (err) 4467 goto free_meta; 4468 } 4469 4470 reset_checkpoint: 4471 f2fs_init_inmem_curseg(sbi); 4472 4473 /* f2fs_recover_fsync_data() cleared this already */ 4474 clear_sbi_flag(sbi, SBI_POR_DOING); 4475 4476 if (test_opt(sbi, DISABLE_CHECKPOINT)) { 4477 err = f2fs_disable_checkpoint(sbi); 4478 if (err) 4479 goto sync_free_meta; 4480 } else if (is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)) { 4481 f2fs_enable_checkpoint(sbi); 4482 } 4483 4484 /* 4485 * If filesystem is not mounted as read-only then 4486 * do start the gc_thread. 4487 */ 4488 if ((F2FS_OPTION(sbi).bggc_mode != BGGC_MODE_OFF || 4489 test_opt(sbi, GC_MERGE)) && !f2fs_readonly(sb)) { 4490 /* After POR, we can run background GC thread.*/ 4491 err = f2fs_start_gc_thread(sbi); 4492 if (err) 4493 goto sync_free_meta; 4494 } 4495 kvfree(options); 4496 4497 /* recover broken superblock */ 4498 if (recovery) { 4499 err = f2fs_commit_super(sbi, true); 4500 f2fs_info(sbi, "Try to recover %dth superblock, ret: %d", 4501 sbi->valid_super_block ? 1 : 2, err); 4502 } 4503 4504 f2fs_join_shrinker(sbi); 4505 4506 f2fs_tuning_parameters(sbi); 4507 4508 f2fs_notice(sbi, "Mounted with checkpoint version = %llx", 4509 cur_cp_version(F2FS_CKPT(sbi))); 4510 f2fs_update_time(sbi, CP_TIME); 4511 f2fs_update_time(sbi, REQ_TIME); 4512 clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK); 4513 return 0; 4514 4515 sync_free_meta: 4516 /* safe to flush all the data */ 4517 sync_filesystem(sbi->sb); 4518 retry_cnt = 0; 4519 4520 free_meta: 4521 #ifdef CONFIG_QUOTA 4522 f2fs_truncate_quota_inode_pages(sb); 4523 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) 4524 f2fs_quota_off_umount(sbi->sb); 4525 #endif 4526 /* 4527 * Some dirty meta pages can be produced by f2fs_recover_orphan_inodes() 4528 * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg() 4529 * followed by f2fs_write_checkpoint() through f2fs_write_node_pages(), which 4530 * falls into an infinite loop in f2fs_sync_meta_pages(). 4531 */ 4532 truncate_inode_pages_final(META_MAPPING(sbi)); 4533 /* evict some inodes being cached by GC */ 4534 evict_inodes(sb); 4535 f2fs_unregister_sysfs(sbi); 4536 free_compress_inode: 4537 f2fs_destroy_compress_inode(sbi); 4538 free_root_inode: 4539 dput(sb->s_root); 4540 sb->s_root = NULL; 4541 free_node_inode: 4542 f2fs_release_ino_entry(sbi, true); 4543 truncate_inode_pages_final(NODE_MAPPING(sbi)); 4544 iput(sbi->node_inode); 4545 sbi->node_inode = NULL; 4546 free_stats: 4547 f2fs_destroy_stats(sbi); 4548 free_nm: 4549 /* stop discard thread before destroying node manager */ 4550 f2fs_stop_discard_thread(sbi); 4551 f2fs_destroy_node_manager(sbi); 4552 free_sm: 4553 f2fs_destroy_segment_manager(sbi); 4554 stop_ckpt_thread: 4555 f2fs_stop_ckpt_thread(sbi); 4556 f2fs_destroy_post_read_wq(sbi); 4557 free_devices: 4558 destroy_device_list(sbi); 4559 kvfree(sbi->ckpt); 4560 free_meta_inode: 4561 make_bad_inode(sbi->meta_inode); 4562 iput(sbi->meta_inode); 4563 sbi->meta_inode = NULL; 4564 free_page_array_cache: 4565 f2fs_destroy_page_array_cache(sbi); 4566 free_xattr_cache: 4567 f2fs_destroy_xattr_caches(sbi); 4568 free_io_dummy: 4569 mempool_destroy(sbi->write_io_dummy); 4570 free_percpu: 4571 destroy_percpu_info(sbi); 4572 free_iostat: 4573 f2fs_destroy_iostat(sbi); 4574 free_bio_info: 4575 for (i = 0; i < NR_PAGE_TYPE; i++) 4576 kvfree(sbi->write_io[i]); 4577 4578 #if IS_ENABLED(CONFIG_UNICODE) 4579 utf8_unload(sb->s_encoding); 4580 sb->s_encoding = NULL; 4581 #endif 4582 free_options: 4583 #ifdef CONFIG_QUOTA 4584 for (i = 0; i < MAXQUOTAS; i++) 4585 kfree(F2FS_OPTION(sbi).s_qf_names[i]); 4586 #endif 4587 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy); 4588 kvfree(options); 4589 free_sb_buf: 4590 kfree(raw_super); 4591 free_sbi: 4592 if (sbi->s_chksum_driver) 4593 crypto_free_shash(sbi->s_chksum_driver); 4594 kfree(sbi); 4595 4596 /* give only one another chance */ 4597 if (retry_cnt > 0 && skip_recovery) { 4598 retry_cnt--; 4599 shrink_dcache_sb(sb); 4600 goto try_onemore; 4601 } 4602 return err; 4603 } 4604 4605 static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags, 4606 const char *dev_name, void *data) 4607 { 4608 return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super); 4609 } 4610 4611 static void kill_f2fs_super(struct super_block *sb) 4612 { 4613 if (sb->s_root) { 4614 struct f2fs_sb_info *sbi = F2FS_SB(sb); 4615 4616 set_sbi_flag(sbi, SBI_IS_CLOSE); 4617 f2fs_stop_gc_thread(sbi); 4618 f2fs_stop_discard_thread(sbi); 4619 4620 #ifdef CONFIG_F2FS_FS_COMPRESSION 4621 /* 4622 * latter evict_inode() can bypass checking and invalidating 4623 * compress inode cache. 4624 */ 4625 if (test_opt(sbi, COMPRESS_CACHE)) 4626 truncate_inode_pages_final(COMPRESS_MAPPING(sbi)); 4627 #endif 4628 4629 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) || 4630 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) { 4631 struct cp_control cpc = { 4632 .reason = CP_UMOUNT, 4633 }; 4634 f2fs_write_checkpoint(sbi, &cpc); 4635 } 4636 4637 if (is_sbi_flag_set(sbi, SBI_IS_RECOVERED) && f2fs_readonly(sb)) 4638 sb->s_flags &= ~SB_RDONLY; 4639 } 4640 kill_block_super(sb); 4641 } 4642 4643 static struct file_system_type f2fs_fs_type = { 4644 .owner = THIS_MODULE, 4645 .name = "f2fs", 4646 .mount = f2fs_mount, 4647 .kill_sb = kill_f2fs_super, 4648 .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP, 4649 }; 4650 MODULE_ALIAS_FS("f2fs"); 4651 4652 static int __init init_inodecache(void) 4653 { 4654 f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache", 4655 sizeof(struct f2fs_inode_info), 0, 4656 SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL); 4657 return f2fs_inode_cachep ? 0 : -ENOMEM; 4658 } 4659 4660 static void destroy_inodecache(void) 4661 { 4662 /* 4663 * Make sure all delayed rcu free inodes are flushed before we 4664 * destroy cache. 4665 */ 4666 rcu_barrier(); 4667 kmem_cache_destroy(f2fs_inode_cachep); 4668 } 4669 4670 static int __init init_f2fs_fs(void) 4671 { 4672 int err; 4673 4674 if (PAGE_SIZE != F2FS_BLKSIZE) { 4675 printk("F2FS not supported on PAGE_SIZE(%lu) != %d\n", 4676 PAGE_SIZE, F2FS_BLKSIZE); 4677 return -EINVAL; 4678 } 4679 4680 err = init_inodecache(); 4681 if (err) 4682 goto fail; 4683 err = f2fs_create_node_manager_caches(); 4684 if (err) 4685 goto free_inodecache; 4686 err = f2fs_create_segment_manager_caches(); 4687 if (err) 4688 goto free_node_manager_caches; 4689 err = f2fs_create_checkpoint_caches(); 4690 if (err) 4691 goto free_segment_manager_caches; 4692 err = f2fs_create_recovery_cache(); 4693 if (err) 4694 goto free_checkpoint_caches; 4695 err = f2fs_create_extent_cache(); 4696 if (err) 4697 goto free_recovery_cache; 4698 err = f2fs_create_garbage_collection_cache(); 4699 if (err) 4700 goto free_extent_cache; 4701 err = f2fs_init_sysfs(); 4702 if (err) 4703 goto free_garbage_collection_cache; 4704 err = register_shrinker(&f2fs_shrinker_info, "f2fs-shrinker"); 4705 if (err) 4706 goto free_sysfs; 4707 err = register_filesystem(&f2fs_fs_type); 4708 if (err) 4709 goto free_shrinker; 4710 f2fs_create_root_stats(); 4711 err = f2fs_init_post_read_processing(); 4712 if (err) 4713 goto free_root_stats; 4714 err = f2fs_init_iostat_processing(); 4715 if (err) 4716 goto free_post_read; 4717 err = f2fs_init_bio_entry_cache(); 4718 if (err) 4719 goto free_iostat; 4720 err = f2fs_init_bioset(); 4721 if (err) 4722 goto free_bio_entry_cache; 4723 err = f2fs_init_compress_mempool(); 4724 if (err) 4725 goto free_bioset; 4726 err = f2fs_init_compress_cache(); 4727 if (err) 4728 goto free_compress_mempool; 4729 err = f2fs_create_casefold_cache(); 4730 if (err) 4731 goto free_compress_cache; 4732 return 0; 4733 free_compress_cache: 4734 f2fs_destroy_compress_cache(); 4735 free_compress_mempool: 4736 f2fs_destroy_compress_mempool(); 4737 free_bioset: 4738 f2fs_destroy_bioset(); 4739 free_bio_entry_cache: 4740 f2fs_destroy_bio_entry_cache(); 4741 free_iostat: 4742 f2fs_destroy_iostat_processing(); 4743 free_post_read: 4744 f2fs_destroy_post_read_processing(); 4745 free_root_stats: 4746 f2fs_destroy_root_stats(); 4747 unregister_filesystem(&f2fs_fs_type); 4748 free_shrinker: 4749 unregister_shrinker(&f2fs_shrinker_info); 4750 free_sysfs: 4751 f2fs_exit_sysfs(); 4752 free_garbage_collection_cache: 4753 f2fs_destroy_garbage_collection_cache(); 4754 free_extent_cache: 4755 f2fs_destroy_extent_cache(); 4756 free_recovery_cache: 4757 f2fs_destroy_recovery_cache(); 4758 free_checkpoint_caches: 4759 f2fs_destroy_checkpoint_caches(); 4760 free_segment_manager_caches: 4761 f2fs_destroy_segment_manager_caches(); 4762 free_node_manager_caches: 4763 f2fs_destroy_node_manager_caches(); 4764 free_inodecache: 4765 destroy_inodecache(); 4766 fail: 4767 return err; 4768 } 4769 4770 static void __exit exit_f2fs_fs(void) 4771 { 4772 f2fs_destroy_casefold_cache(); 4773 f2fs_destroy_compress_cache(); 4774 f2fs_destroy_compress_mempool(); 4775 f2fs_destroy_bioset(); 4776 f2fs_destroy_bio_entry_cache(); 4777 f2fs_destroy_iostat_processing(); 4778 f2fs_destroy_post_read_processing(); 4779 f2fs_destroy_root_stats(); 4780 unregister_filesystem(&f2fs_fs_type); 4781 unregister_shrinker(&f2fs_shrinker_info); 4782 f2fs_exit_sysfs(); 4783 f2fs_destroy_garbage_collection_cache(); 4784 f2fs_destroy_extent_cache(); 4785 f2fs_destroy_recovery_cache(); 4786 f2fs_destroy_checkpoint_caches(); 4787 f2fs_destroy_segment_manager_caches(); 4788 f2fs_destroy_node_manager_caches(); 4789 destroy_inodecache(); 4790 } 4791 4792 module_init(init_f2fs_fs) 4793 module_exit(exit_f2fs_fs) 4794 4795 MODULE_AUTHOR("Samsung Electronics's Praesto Team"); 4796 MODULE_DESCRIPTION("Flash Friendly File System"); 4797 MODULE_LICENSE("GPL"); 4798 MODULE_SOFTDEP("pre: crc32"); 4799 4800