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 f2fs_warn(sbi, "Test dummy encryption mode enabled"); 544 return 0; 545 } 546 547 #ifdef CONFIG_F2FS_FS_COMPRESSION 548 /* 549 * 1. The same extension name cannot not appear in both compress and non-compress extension 550 * at the same time. 551 * 2. If the compress extension specifies all files, the types specified by the non-compress 552 * extension will be treated as special cases and will not be compressed. 553 * 3. Don't allow the non-compress extension specifies all files. 554 */ 555 static int f2fs_test_compress_extension(struct f2fs_sb_info *sbi) 556 { 557 unsigned char (*ext)[F2FS_EXTENSION_LEN]; 558 unsigned char (*noext)[F2FS_EXTENSION_LEN]; 559 int ext_cnt, noext_cnt, index = 0, no_index = 0; 560 561 ext = F2FS_OPTION(sbi).extensions; 562 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt; 563 noext = F2FS_OPTION(sbi).noextensions; 564 noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt; 565 566 if (!noext_cnt) 567 return 0; 568 569 for (no_index = 0; no_index < noext_cnt; no_index++) { 570 if (!strcasecmp("*", noext[no_index])) { 571 f2fs_info(sbi, "Don't allow the nocompress extension specifies all files"); 572 return -EINVAL; 573 } 574 for (index = 0; index < ext_cnt; index++) { 575 if (!strcasecmp(ext[index], noext[no_index])) { 576 f2fs_info(sbi, "Don't allow the same extension %s appear in both compress and nocompress extension", 577 ext[index]); 578 return -EINVAL; 579 } 580 } 581 } 582 return 0; 583 } 584 585 #ifdef CONFIG_F2FS_FS_LZ4 586 static int f2fs_set_lz4hc_level(struct f2fs_sb_info *sbi, const char *str) 587 { 588 #ifdef CONFIG_F2FS_FS_LZ4HC 589 unsigned int level; 590 #endif 591 592 if (strlen(str) == 3) { 593 F2FS_OPTION(sbi).compress_level = 0; 594 return 0; 595 } 596 597 #ifdef CONFIG_F2FS_FS_LZ4HC 598 str += 3; 599 600 if (str[0] != ':') { 601 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>"); 602 return -EINVAL; 603 } 604 if (kstrtouint(str + 1, 10, &level)) 605 return -EINVAL; 606 607 if (level < LZ4HC_MIN_CLEVEL || level > LZ4HC_MAX_CLEVEL) { 608 f2fs_info(sbi, "invalid lz4hc compress level: %d", level); 609 return -EINVAL; 610 } 611 612 F2FS_OPTION(sbi).compress_level = level; 613 return 0; 614 #else 615 f2fs_info(sbi, "kernel doesn't support lz4hc compression"); 616 return -EINVAL; 617 #endif 618 } 619 #endif 620 621 #ifdef CONFIG_F2FS_FS_ZSTD 622 static int f2fs_set_zstd_level(struct f2fs_sb_info *sbi, const char *str) 623 { 624 unsigned int level; 625 int len = 4; 626 627 if (strlen(str) == len) { 628 F2FS_OPTION(sbi).compress_level = 0; 629 return 0; 630 } 631 632 str += len; 633 634 if (str[0] != ':') { 635 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>"); 636 return -EINVAL; 637 } 638 if (kstrtouint(str + 1, 10, &level)) 639 return -EINVAL; 640 641 if (!level || level > zstd_max_clevel()) { 642 f2fs_info(sbi, "invalid zstd compress level: %d", level); 643 return -EINVAL; 644 } 645 646 F2FS_OPTION(sbi).compress_level = level; 647 return 0; 648 } 649 #endif 650 #endif 651 652 static int parse_options(struct super_block *sb, char *options, bool is_remount) 653 { 654 struct f2fs_sb_info *sbi = F2FS_SB(sb); 655 substring_t args[MAX_OPT_ARGS]; 656 #ifdef CONFIG_F2FS_FS_COMPRESSION 657 unsigned char (*ext)[F2FS_EXTENSION_LEN]; 658 unsigned char (*noext)[F2FS_EXTENSION_LEN]; 659 int ext_cnt, noext_cnt; 660 #endif 661 char *p, *name; 662 int arg = 0; 663 kuid_t uid; 664 kgid_t gid; 665 int ret; 666 667 if (!options) 668 goto default_check; 669 670 while ((p = strsep(&options, ",")) != NULL) { 671 int token; 672 673 if (!*p) 674 continue; 675 /* 676 * Initialize args struct so we know whether arg was 677 * found; some options take optional arguments. 678 */ 679 args[0].to = args[0].from = NULL; 680 token = match_token(p, f2fs_tokens, args); 681 682 switch (token) { 683 case Opt_gc_background: 684 name = match_strdup(&args[0]); 685 686 if (!name) 687 return -ENOMEM; 688 if (!strcmp(name, "on")) { 689 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON; 690 } else if (!strcmp(name, "off")) { 691 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_OFF; 692 } else if (!strcmp(name, "sync")) { 693 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_SYNC; 694 } else { 695 kfree(name); 696 return -EINVAL; 697 } 698 kfree(name); 699 break; 700 case Opt_disable_roll_forward: 701 set_opt(sbi, DISABLE_ROLL_FORWARD); 702 break; 703 case Opt_norecovery: 704 /* this option mounts f2fs with ro */ 705 set_opt(sbi, NORECOVERY); 706 if (!f2fs_readonly(sb)) 707 return -EINVAL; 708 break; 709 case Opt_discard: 710 if (!f2fs_hw_support_discard(sbi)) { 711 f2fs_warn(sbi, "device does not support discard"); 712 break; 713 } 714 set_opt(sbi, DISCARD); 715 break; 716 case Opt_nodiscard: 717 if (f2fs_hw_should_discard(sbi)) { 718 f2fs_warn(sbi, "discard is required for zoned block devices"); 719 return -EINVAL; 720 } 721 clear_opt(sbi, DISCARD); 722 break; 723 case Opt_noheap: 724 set_opt(sbi, NOHEAP); 725 break; 726 case Opt_heap: 727 clear_opt(sbi, NOHEAP); 728 break; 729 #ifdef CONFIG_F2FS_FS_XATTR 730 case Opt_user_xattr: 731 set_opt(sbi, XATTR_USER); 732 break; 733 case Opt_nouser_xattr: 734 clear_opt(sbi, XATTR_USER); 735 break; 736 case Opt_inline_xattr: 737 set_opt(sbi, INLINE_XATTR); 738 break; 739 case Opt_noinline_xattr: 740 clear_opt(sbi, INLINE_XATTR); 741 break; 742 case Opt_inline_xattr_size: 743 if (args->from && match_int(args, &arg)) 744 return -EINVAL; 745 set_opt(sbi, INLINE_XATTR_SIZE); 746 F2FS_OPTION(sbi).inline_xattr_size = arg; 747 break; 748 #else 749 case Opt_user_xattr: 750 f2fs_info(sbi, "user_xattr options not supported"); 751 break; 752 case Opt_nouser_xattr: 753 f2fs_info(sbi, "nouser_xattr options not supported"); 754 break; 755 case Opt_inline_xattr: 756 f2fs_info(sbi, "inline_xattr options not supported"); 757 break; 758 case Opt_noinline_xattr: 759 f2fs_info(sbi, "noinline_xattr options not supported"); 760 break; 761 #endif 762 #ifdef CONFIG_F2FS_FS_POSIX_ACL 763 case Opt_acl: 764 set_opt(sbi, POSIX_ACL); 765 break; 766 case Opt_noacl: 767 clear_opt(sbi, POSIX_ACL); 768 break; 769 #else 770 case Opt_acl: 771 f2fs_info(sbi, "acl options not supported"); 772 break; 773 case Opt_noacl: 774 f2fs_info(sbi, "noacl options not supported"); 775 break; 776 #endif 777 case Opt_active_logs: 778 if (args->from && match_int(args, &arg)) 779 return -EINVAL; 780 if (arg != 2 && arg != 4 && 781 arg != NR_CURSEG_PERSIST_TYPE) 782 return -EINVAL; 783 F2FS_OPTION(sbi).active_logs = arg; 784 break; 785 case Opt_disable_ext_identify: 786 set_opt(sbi, DISABLE_EXT_IDENTIFY); 787 break; 788 case Opt_inline_data: 789 set_opt(sbi, INLINE_DATA); 790 break; 791 case Opt_inline_dentry: 792 set_opt(sbi, INLINE_DENTRY); 793 break; 794 case Opt_noinline_dentry: 795 clear_opt(sbi, INLINE_DENTRY); 796 break; 797 case Opt_flush_merge: 798 set_opt(sbi, FLUSH_MERGE); 799 break; 800 case Opt_noflush_merge: 801 clear_opt(sbi, FLUSH_MERGE); 802 break; 803 case Opt_nobarrier: 804 set_opt(sbi, NOBARRIER); 805 break; 806 case Opt_barrier: 807 clear_opt(sbi, NOBARRIER); 808 break; 809 case Opt_fastboot: 810 set_opt(sbi, FASTBOOT); 811 break; 812 case Opt_extent_cache: 813 set_opt(sbi, READ_EXTENT_CACHE); 814 break; 815 case Opt_noextent_cache: 816 clear_opt(sbi, READ_EXTENT_CACHE); 817 break; 818 case Opt_noinline_data: 819 clear_opt(sbi, INLINE_DATA); 820 break; 821 case Opt_data_flush: 822 set_opt(sbi, DATA_FLUSH); 823 break; 824 case Opt_reserve_root: 825 if (args->from && match_int(args, &arg)) 826 return -EINVAL; 827 if (test_opt(sbi, RESERVE_ROOT)) { 828 f2fs_info(sbi, "Preserve previous reserve_root=%u", 829 F2FS_OPTION(sbi).root_reserved_blocks); 830 } else { 831 F2FS_OPTION(sbi).root_reserved_blocks = arg; 832 set_opt(sbi, RESERVE_ROOT); 833 } 834 break; 835 case Opt_resuid: 836 if (args->from && match_int(args, &arg)) 837 return -EINVAL; 838 uid = make_kuid(current_user_ns(), arg); 839 if (!uid_valid(uid)) { 840 f2fs_err(sbi, "Invalid uid value %d", arg); 841 return -EINVAL; 842 } 843 F2FS_OPTION(sbi).s_resuid = uid; 844 break; 845 case Opt_resgid: 846 if (args->from && match_int(args, &arg)) 847 return -EINVAL; 848 gid = make_kgid(current_user_ns(), arg); 849 if (!gid_valid(gid)) { 850 f2fs_err(sbi, "Invalid gid value %d", arg); 851 return -EINVAL; 852 } 853 F2FS_OPTION(sbi).s_resgid = gid; 854 break; 855 case Opt_mode: 856 name = match_strdup(&args[0]); 857 858 if (!name) 859 return -ENOMEM; 860 if (!strcmp(name, "adaptive")) { 861 if (f2fs_sb_has_blkzoned(sbi)) { 862 f2fs_warn(sbi, "adaptive mode is not allowed with zoned block device feature"); 863 kfree(name); 864 return -EINVAL; 865 } 866 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE; 867 } else if (!strcmp(name, "lfs")) { 868 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS; 869 } else if (!strcmp(name, "fragment:segment")) { 870 F2FS_OPTION(sbi).fs_mode = FS_MODE_FRAGMENT_SEG; 871 } else if (!strcmp(name, "fragment:block")) { 872 F2FS_OPTION(sbi).fs_mode = FS_MODE_FRAGMENT_BLK; 873 } else { 874 kfree(name); 875 return -EINVAL; 876 } 877 kfree(name); 878 break; 879 case Opt_io_size_bits: 880 if (args->from && match_int(args, &arg)) 881 return -EINVAL; 882 if (arg <= 0 || arg > __ilog2_u32(BIO_MAX_VECS)) { 883 f2fs_warn(sbi, "Not support %d, larger than %d", 884 1 << arg, BIO_MAX_VECS); 885 return -EINVAL; 886 } 887 F2FS_OPTION(sbi).write_io_size_bits = arg; 888 break; 889 #ifdef CONFIG_F2FS_FAULT_INJECTION 890 case Opt_fault_injection: 891 if (args->from && match_int(args, &arg)) 892 return -EINVAL; 893 f2fs_build_fault_attr(sbi, arg, F2FS_ALL_FAULT_TYPE); 894 set_opt(sbi, FAULT_INJECTION); 895 break; 896 897 case Opt_fault_type: 898 if (args->from && match_int(args, &arg)) 899 return -EINVAL; 900 f2fs_build_fault_attr(sbi, 0, arg); 901 set_opt(sbi, FAULT_INJECTION); 902 break; 903 #else 904 case Opt_fault_injection: 905 f2fs_info(sbi, "fault_injection options not supported"); 906 break; 907 908 case Opt_fault_type: 909 f2fs_info(sbi, "fault_type options not supported"); 910 break; 911 #endif 912 case Opt_lazytime: 913 sb->s_flags |= SB_LAZYTIME; 914 break; 915 case Opt_nolazytime: 916 sb->s_flags &= ~SB_LAZYTIME; 917 break; 918 #ifdef CONFIG_QUOTA 919 case Opt_quota: 920 case Opt_usrquota: 921 set_opt(sbi, USRQUOTA); 922 break; 923 case Opt_grpquota: 924 set_opt(sbi, GRPQUOTA); 925 break; 926 case Opt_prjquota: 927 set_opt(sbi, PRJQUOTA); 928 break; 929 case Opt_usrjquota: 930 ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]); 931 if (ret) 932 return ret; 933 break; 934 case Opt_grpjquota: 935 ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]); 936 if (ret) 937 return ret; 938 break; 939 case Opt_prjjquota: 940 ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]); 941 if (ret) 942 return ret; 943 break; 944 case Opt_offusrjquota: 945 ret = f2fs_clear_qf_name(sb, USRQUOTA); 946 if (ret) 947 return ret; 948 break; 949 case Opt_offgrpjquota: 950 ret = f2fs_clear_qf_name(sb, GRPQUOTA); 951 if (ret) 952 return ret; 953 break; 954 case Opt_offprjjquota: 955 ret = f2fs_clear_qf_name(sb, PRJQUOTA); 956 if (ret) 957 return ret; 958 break; 959 case Opt_jqfmt_vfsold: 960 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD; 961 break; 962 case Opt_jqfmt_vfsv0: 963 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0; 964 break; 965 case Opt_jqfmt_vfsv1: 966 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1; 967 break; 968 case Opt_noquota: 969 clear_opt(sbi, QUOTA); 970 clear_opt(sbi, USRQUOTA); 971 clear_opt(sbi, GRPQUOTA); 972 clear_opt(sbi, PRJQUOTA); 973 break; 974 #else 975 case Opt_quota: 976 case Opt_usrquota: 977 case Opt_grpquota: 978 case Opt_prjquota: 979 case Opt_usrjquota: 980 case Opt_grpjquota: 981 case Opt_prjjquota: 982 case Opt_offusrjquota: 983 case Opt_offgrpjquota: 984 case Opt_offprjjquota: 985 case Opt_jqfmt_vfsold: 986 case Opt_jqfmt_vfsv0: 987 case Opt_jqfmt_vfsv1: 988 case Opt_noquota: 989 f2fs_info(sbi, "quota operations not supported"); 990 break; 991 #endif 992 case Opt_alloc: 993 name = match_strdup(&args[0]); 994 if (!name) 995 return -ENOMEM; 996 997 if (!strcmp(name, "default")) { 998 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT; 999 } else if (!strcmp(name, "reuse")) { 1000 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE; 1001 } else { 1002 kfree(name); 1003 return -EINVAL; 1004 } 1005 kfree(name); 1006 break; 1007 case Opt_fsync: 1008 name = match_strdup(&args[0]); 1009 if (!name) 1010 return -ENOMEM; 1011 if (!strcmp(name, "posix")) { 1012 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX; 1013 } else if (!strcmp(name, "strict")) { 1014 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT; 1015 } else if (!strcmp(name, "nobarrier")) { 1016 F2FS_OPTION(sbi).fsync_mode = 1017 FSYNC_MODE_NOBARRIER; 1018 } else { 1019 kfree(name); 1020 return -EINVAL; 1021 } 1022 kfree(name); 1023 break; 1024 case Opt_test_dummy_encryption: 1025 ret = f2fs_set_test_dummy_encryption(sb, p, &args[0], 1026 is_remount); 1027 if (ret) 1028 return ret; 1029 break; 1030 case Opt_inlinecrypt: 1031 #ifdef CONFIG_FS_ENCRYPTION_INLINE_CRYPT 1032 sb->s_flags |= SB_INLINECRYPT; 1033 #else 1034 f2fs_info(sbi, "inline encryption not supported"); 1035 #endif 1036 break; 1037 case Opt_checkpoint_disable_cap_perc: 1038 if (args->from && match_int(args, &arg)) 1039 return -EINVAL; 1040 if (arg < 0 || arg > 100) 1041 return -EINVAL; 1042 F2FS_OPTION(sbi).unusable_cap_perc = arg; 1043 set_opt(sbi, DISABLE_CHECKPOINT); 1044 break; 1045 case Opt_checkpoint_disable_cap: 1046 if (args->from && match_int(args, &arg)) 1047 return -EINVAL; 1048 F2FS_OPTION(sbi).unusable_cap = arg; 1049 set_opt(sbi, DISABLE_CHECKPOINT); 1050 break; 1051 case Opt_checkpoint_disable: 1052 set_opt(sbi, DISABLE_CHECKPOINT); 1053 break; 1054 case Opt_checkpoint_enable: 1055 clear_opt(sbi, DISABLE_CHECKPOINT); 1056 break; 1057 case Opt_checkpoint_merge: 1058 set_opt(sbi, MERGE_CHECKPOINT); 1059 break; 1060 case Opt_nocheckpoint_merge: 1061 clear_opt(sbi, MERGE_CHECKPOINT); 1062 break; 1063 #ifdef CONFIG_F2FS_FS_COMPRESSION 1064 case Opt_compress_algorithm: 1065 if (!f2fs_sb_has_compression(sbi)) { 1066 f2fs_info(sbi, "Image doesn't support compression"); 1067 break; 1068 } 1069 name = match_strdup(&args[0]); 1070 if (!name) 1071 return -ENOMEM; 1072 if (!strcmp(name, "lzo")) { 1073 #ifdef CONFIG_F2FS_FS_LZO 1074 F2FS_OPTION(sbi).compress_level = 0; 1075 F2FS_OPTION(sbi).compress_algorithm = 1076 COMPRESS_LZO; 1077 #else 1078 f2fs_info(sbi, "kernel doesn't support lzo compression"); 1079 #endif 1080 } else if (!strncmp(name, "lz4", 3)) { 1081 #ifdef CONFIG_F2FS_FS_LZ4 1082 ret = f2fs_set_lz4hc_level(sbi, name); 1083 if (ret) { 1084 kfree(name); 1085 return -EINVAL; 1086 } 1087 F2FS_OPTION(sbi).compress_algorithm = 1088 COMPRESS_LZ4; 1089 #else 1090 f2fs_info(sbi, "kernel doesn't support lz4 compression"); 1091 #endif 1092 } else if (!strncmp(name, "zstd", 4)) { 1093 #ifdef CONFIG_F2FS_FS_ZSTD 1094 ret = f2fs_set_zstd_level(sbi, name); 1095 if (ret) { 1096 kfree(name); 1097 return -EINVAL; 1098 } 1099 F2FS_OPTION(sbi).compress_algorithm = 1100 COMPRESS_ZSTD; 1101 #else 1102 f2fs_info(sbi, "kernel doesn't support zstd compression"); 1103 #endif 1104 } else if (!strcmp(name, "lzo-rle")) { 1105 #ifdef CONFIG_F2FS_FS_LZORLE 1106 F2FS_OPTION(sbi).compress_level = 0; 1107 F2FS_OPTION(sbi).compress_algorithm = 1108 COMPRESS_LZORLE; 1109 #else 1110 f2fs_info(sbi, "kernel doesn't support lzorle compression"); 1111 #endif 1112 } else { 1113 kfree(name); 1114 return -EINVAL; 1115 } 1116 kfree(name); 1117 break; 1118 case Opt_compress_log_size: 1119 if (!f2fs_sb_has_compression(sbi)) { 1120 f2fs_info(sbi, "Image doesn't support compression"); 1121 break; 1122 } 1123 if (args->from && match_int(args, &arg)) 1124 return -EINVAL; 1125 if (arg < MIN_COMPRESS_LOG_SIZE || 1126 arg > MAX_COMPRESS_LOG_SIZE) { 1127 f2fs_err(sbi, 1128 "Compress cluster log size is out of range"); 1129 return -EINVAL; 1130 } 1131 F2FS_OPTION(sbi).compress_log_size = arg; 1132 break; 1133 case Opt_compress_extension: 1134 if (!f2fs_sb_has_compression(sbi)) { 1135 f2fs_info(sbi, "Image doesn't support compression"); 1136 break; 1137 } 1138 name = match_strdup(&args[0]); 1139 if (!name) 1140 return -ENOMEM; 1141 1142 ext = F2FS_OPTION(sbi).extensions; 1143 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt; 1144 1145 if (strlen(name) >= F2FS_EXTENSION_LEN || 1146 ext_cnt >= COMPRESS_EXT_NUM) { 1147 f2fs_err(sbi, 1148 "invalid extension length/number"); 1149 kfree(name); 1150 return -EINVAL; 1151 } 1152 1153 strcpy(ext[ext_cnt], name); 1154 F2FS_OPTION(sbi).compress_ext_cnt++; 1155 kfree(name); 1156 break; 1157 case Opt_nocompress_extension: 1158 if (!f2fs_sb_has_compression(sbi)) { 1159 f2fs_info(sbi, "Image doesn't support compression"); 1160 break; 1161 } 1162 name = match_strdup(&args[0]); 1163 if (!name) 1164 return -ENOMEM; 1165 1166 noext = F2FS_OPTION(sbi).noextensions; 1167 noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt; 1168 1169 if (strlen(name) >= F2FS_EXTENSION_LEN || 1170 noext_cnt >= COMPRESS_EXT_NUM) { 1171 f2fs_err(sbi, 1172 "invalid extension length/number"); 1173 kfree(name); 1174 return -EINVAL; 1175 } 1176 1177 strcpy(noext[noext_cnt], name); 1178 F2FS_OPTION(sbi).nocompress_ext_cnt++; 1179 kfree(name); 1180 break; 1181 case Opt_compress_chksum: 1182 F2FS_OPTION(sbi).compress_chksum = true; 1183 break; 1184 case Opt_compress_mode: 1185 name = match_strdup(&args[0]); 1186 if (!name) 1187 return -ENOMEM; 1188 if (!strcmp(name, "fs")) { 1189 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS; 1190 } else if (!strcmp(name, "user")) { 1191 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_USER; 1192 } else { 1193 kfree(name); 1194 return -EINVAL; 1195 } 1196 kfree(name); 1197 break; 1198 case Opt_compress_cache: 1199 set_opt(sbi, COMPRESS_CACHE); 1200 break; 1201 #else 1202 case Opt_compress_algorithm: 1203 case Opt_compress_log_size: 1204 case Opt_compress_extension: 1205 case Opt_nocompress_extension: 1206 case Opt_compress_chksum: 1207 case Opt_compress_mode: 1208 case Opt_compress_cache: 1209 f2fs_info(sbi, "compression options not supported"); 1210 break; 1211 #endif 1212 case Opt_atgc: 1213 set_opt(sbi, ATGC); 1214 break; 1215 case Opt_gc_merge: 1216 set_opt(sbi, GC_MERGE); 1217 break; 1218 case Opt_nogc_merge: 1219 clear_opt(sbi, GC_MERGE); 1220 break; 1221 case Opt_discard_unit: 1222 name = match_strdup(&args[0]); 1223 if (!name) 1224 return -ENOMEM; 1225 if (!strcmp(name, "block")) { 1226 F2FS_OPTION(sbi).discard_unit = 1227 DISCARD_UNIT_BLOCK; 1228 } else if (!strcmp(name, "segment")) { 1229 F2FS_OPTION(sbi).discard_unit = 1230 DISCARD_UNIT_SEGMENT; 1231 } else if (!strcmp(name, "section")) { 1232 F2FS_OPTION(sbi).discard_unit = 1233 DISCARD_UNIT_SECTION; 1234 } else { 1235 kfree(name); 1236 return -EINVAL; 1237 } 1238 kfree(name); 1239 break; 1240 case Opt_memory_mode: 1241 name = match_strdup(&args[0]); 1242 if (!name) 1243 return -ENOMEM; 1244 if (!strcmp(name, "normal")) { 1245 F2FS_OPTION(sbi).memory_mode = 1246 MEMORY_MODE_NORMAL; 1247 } else if (!strcmp(name, "low")) { 1248 F2FS_OPTION(sbi).memory_mode = 1249 MEMORY_MODE_LOW; 1250 } else { 1251 kfree(name); 1252 return -EINVAL; 1253 } 1254 kfree(name); 1255 break; 1256 case Opt_age_extent_cache: 1257 set_opt(sbi, AGE_EXTENT_CACHE); 1258 break; 1259 default: 1260 f2fs_err(sbi, "Unrecognized mount option \"%s\" or missing value", 1261 p); 1262 return -EINVAL; 1263 } 1264 } 1265 default_check: 1266 #ifdef CONFIG_QUOTA 1267 if (f2fs_check_quota_options(sbi)) 1268 return -EINVAL; 1269 #else 1270 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sbi->sb)) { 1271 f2fs_info(sbi, "Filesystem with quota feature cannot be mounted RDWR without CONFIG_QUOTA"); 1272 return -EINVAL; 1273 } 1274 if (f2fs_sb_has_project_quota(sbi) && !f2fs_readonly(sbi->sb)) { 1275 f2fs_err(sbi, "Filesystem with project quota feature cannot be mounted RDWR without CONFIG_QUOTA"); 1276 return -EINVAL; 1277 } 1278 #endif 1279 #if !IS_ENABLED(CONFIG_UNICODE) 1280 if (f2fs_sb_has_casefold(sbi)) { 1281 f2fs_err(sbi, 1282 "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE"); 1283 return -EINVAL; 1284 } 1285 #endif 1286 /* 1287 * The BLKZONED feature indicates that the drive was formatted with 1288 * zone alignment optimization. This is optional for host-aware 1289 * devices, but mandatory for host-managed zoned block devices. 1290 */ 1291 if (f2fs_sb_has_blkzoned(sbi)) { 1292 #ifdef CONFIG_BLK_DEV_ZONED 1293 if (F2FS_OPTION(sbi).discard_unit != 1294 DISCARD_UNIT_SECTION) { 1295 f2fs_info(sbi, "Zoned block device doesn't need small discard, set discard_unit=section by default"); 1296 F2FS_OPTION(sbi).discard_unit = 1297 DISCARD_UNIT_SECTION; 1298 } 1299 #else 1300 f2fs_err(sbi, "Zoned block device support is not enabled"); 1301 return -EINVAL; 1302 #endif 1303 } 1304 1305 #ifdef CONFIG_F2FS_FS_COMPRESSION 1306 if (f2fs_test_compress_extension(sbi)) { 1307 f2fs_err(sbi, "invalid compress or nocompress extension"); 1308 return -EINVAL; 1309 } 1310 #endif 1311 1312 if (F2FS_IO_SIZE_BITS(sbi) && !f2fs_lfs_mode(sbi)) { 1313 f2fs_err(sbi, "Should set mode=lfs with %uKB-sized IO", 1314 F2FS_IO_SIZE_KB(sbi)); 1315 return -EINVAL; 1316 } 1317 1318 if (test_opt(sbi, INLINE_XATTR_SIZE)) { 1319 int min_size, max_size; 1320 1321 if (!f2fs_sb_has_extra_attr(sbi) || 1322 !f2fs_sb_has_flexible_inline_xattr(sbi)) { 1323 f2fs_err(sbi, "extra_attr or flexible_inline_xattr feature is off"); 1324 return -EINVAL; 1325 } 1326 if (!test_opt(sbi, INLINE_XATTR)) { 1327 f2fs_err(sbi, "inline_xattr_size option should be set with inline_xattr option"); 1328 return -EINVAL; 1329 } 1330 1331 min_size = sizeof(struct f2fs_xattr_header) / sizeof(__le32); 1332 max_size = MAX_INLINE_XATTR_SIZE; 1333 1334 if (F2FS_OPTION(sbi).inline_xattr_size < min_size || 1335 F2FS_OPTION(sbi).inline_xattr_size > max_size) { 1336 f2fs_err(sbi, "inline xattr size is out of range: %d ~ %d", 1337 min_size, max_size); 1338 return -EINVAL; 1339 } 1340 } 1341 1342 if (test_opt(sbi, DISABLE_CHECKPOINT) && f2fs_lfs_mode(sbi)) { 1343 f2fs_err(sbi, "LFS is not compatible with checkpoint=disable"); 1344 return -EINVAL; 1345 } 1346 1347 if (test_opt(sbi, ATGC) && f2fs_lfs_mode(sbi)) { 1348 f2fs_err(sbi, "LFS is not compatible with ATGC"); 1349 return -EINVAL; 1350 } 1351 1352 if (f2fs_is_readonly(sbi) && test_opt(sbi, FLUSH_MERGE)) { 1353 f2fs_err(sbi, "FLUSH_MERGE not compatible with readonly mode"); 1354 return -EINVAL; 1355 } 1356 1357 if (f2fs_sb_has_readonly(sbi) && !f2fs_readonly(sbi->sb)) { 1358 f2fs_err(sbi, "Allow to mount readonly mode only"); 1359 return -EROFS; 1360 } 1361 return 0; 1362 } 1363 1364 static struct inode *f2fs_alloc_inode(struct super_block *sb) 1365 { 1366 struct f2fs_inode_info *fi; 1367 1368 if (time_to_inject(F2FS_SB(sb), FAULT_SLAB_ALLOC)) 1369 return NULL; 1370 1371 fi = alloc_inode_sb(sb, f2fs_inode_cachep, GFP_F2FS_ZERO); 1372 if (!fi) 1373 return NULL; 1374 1375 init_once((void *) fi); 1376 1377 /* Initialize f2fs-specific inode info */ 1378 atomic_set(&fi->dirty_pages, 0); 1379 atomic_set(&fi->i_compr_blocks, 0); 1380 init_f2fs_rwsem(&fi->i_sem); 1381 spin_lock_init(&fi->i_size_lock); 1382 INIT_LIST_HEAD(&fi->dirty_list); 1383 INIT_LIST_HEAD(&fi->gdirty_list); 1384 init_f2fs_rwsem(&fi->i_gc_rwsem[READ]); 1385 init_f2fs_rwsem(&fi->i_gc_rwsem[WRITE]); 1386 init_f2fs_rwsem(&fi->i_xattr_sem); 1387 1388 /* Will be used by directory only */ 1389 fi->i_dir_level = F2FS_SB(sb)->dir_level; 1390 1391 return &fi->vfs_inode; 1392 } 1393 1394 static int f2fs_drop_inode(struct inode *inode) 1395 { 1396 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1397 int ret; 1398 1399 /* 1400 * during filesystem shutdown, if checkpoint is disabled, 1401 * drop useless meta/node dirty pages. 1402 */ 1403 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) { 1404 if (inode->i_ino == F2FS_NODE_INO(sbi) || 1405 inode->i_ino == F2FS_META_INO(sbi)) { 1406 trace_f2fs_drop_inode(inode, 1); 1407 return 1; 1408 } 1409 } 1410 1411 /* 1412 * This is to avoid a deadlock condition like below. 1413 * writeback_single_inode(inode) 1414 * - f2fs_write_data_page 1415 * - f2fs_gc -> iput -> evict 1416 * - inode_wait_for_writeback(inode) 1417 */ 1418 if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) { 1419 if (!inode->i_nlink && !is_bad_inode(inode)) { 1420 /* to avoid evict_inode call simultaneously */ 1421 atomic_inc(&inode->i_count); 1422 spin_unlock(&inode->i_lock); 1423 1424 /* should remain fi->extent_tree for writepage */ 1425 f2fs_destroy_extent_node(inode); 1426 1427 sb_start_intwrite(inode->i_sb); 1428 f2fs_i_size_write(inode, 0); 1429 1430 f2fs_submit_merged_write_cond(F2FS_I_SB(inode), 1431 inode, NULL, 0, DATA); 1432 truncate_inode_pages_final(inode->i_mapping); 1433 1434 if (F2FS_HAS_BLOCKS(inode)) 1435 f2fs_truncate(inode); 1436 1437 sb_end_intwrite(inode->i_sb); 1438 1439 spin_lock(&inode->i_lock); 1440 atomic_dec(&inode->i_count); 1441 } 1442 trace_f2fs_drop_inode(inode, 0); 1443 return 0; 1444 } 1445 ret = generic_drop_inode(inode); 1446 if (!ret) 1447 ret = fscrypt_drop_inode(inode); 1448 trace_f2fs_drop_inode(inode, ret); 1449 return ret; 1450 } 1451 1452 int f2fs_inode_dirtied(struct inode *inode, bool sync) 1453 { 1454 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1455 int ret = 0; 1456 1457 spin_lock(&sbi->inode_lock[DIRTY_META]); 1458 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) { 1459 ret = 1; 1460 } else { 1461 set_inode_flag(inode, FI_DIRTY_INODE); 1462 stat_inc_dirty_inode(sbi, DIRTY_META); 1463 } 1464 if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) { 1465 list_add_tail(&F2FS_I(inode)->gdirty_list, 1466 &sbi->inode_list[DIRTY_META]); 1467 inc_page_count(sbi, F2FS_DIRTY_IMETA); 1468 } 1469 spin_unlock(&sbi->inode_lock[DIRTY_META]); 1470 return ret; 1471 } 1472 1473 void f2fs_inode_synced(struct inode *inode) 1474 { 1475 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1476 1477 spin_lock(&sbi->inode_lock[DIRTY_META]); 1478 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) { 1479 spin_unlock(&sbi->inode_lock[DIRTY_META]); 1480 return; 1481 } 1482 if (!list_empty(&F2FS_I(inode)->gdirty_list)) { 1483 list_del_init(&F2FS_I(inode)->gdirty_list); 1484 dec_page_count(sbi, F2FS_DIRTY_IMETA); 1485 } 1486 clear_inode_flag(inode, FI_DIRTY_INODE); 1487 clear_inode_flag(inode, FI_AUTO_RECOVER); 1488 stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META); 1489 spin_unlock(&sbi->inode_lock[DIRTY_META]); 1490 } 1491 1492 /* 1493 * f2fs_dirty_inode() is called from __mark_inode_dirty() 1494 * 1495 * We should call set_dirty_inode to write the dirty inode through write_inode. 1496 */ 1497 static void f2fs_dirty_inode(struct inode *inode, int flags) 1498 { 1499 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1500 1501 if (inode->i_ino == F2FS_NODE_INO(sbi) || 1502 inode->i_ino == F2FS_META_INO(sbi)) 1503 return; 1504 1505 if (is_inode_flag_set(inode, FI_AUTO_RECOVER)) 1506 clear_inode_flag(inode, FI_AUTO_RECOVER); 1507 1508 f2fs_inode_dirtied(inode, false); 1509 } 1510 1511 static void f2fs_free_inode(struct inode *inode) 1512 { 1513 fscrypt_free_inode(inode); 1514 kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode)); 1515 } 1516 1517 static void destroy_percpu_info(struct f2fs_sb_info *sbi) 1518 { 1519 percpu_counter_destroy(&sbi->total_valid_inode_count); 1520 percpu_counter_destroy(&sbi->rf_node_block_count); 1521 percpu_counter_destroy(&sbi->alloc_valid_block_count); 1522 } 1523 1524 static void destroy_device_list(struct f2fs_sb_info *sbi) 1525 { 1526 int i; 1527 1528 for (i = 0; i < sbi->s_ndevs; i++) { 1529 blkdev_put(FDEV(i).bdev, FMODE_EXCL); 1530 #ifdef CONFIG_BLK_DEV_ZONED 1531 kvfree(FDEV(i).blkz_seq); 1532 #endif 1533 } 1534 kvfree(sbi->devs); 1535 } 1536 1537 static void f2fs_put_super(struct super_block *sb) 1538 { 1539 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1540 int i; 1541 bool done; 1542 1543 /* unregister procfs/sysfs entries in advance to avoid race case */ 1544 f2fs_unregister_sysfs(sbi); 1545 1546 f2fs_quota_off_umount(sb); 1547 1548 /* prevent remaining shrinker jobs */ 1549 mutex_lock(&sbi->umount_mutex); 1550 1551 /* 1552 * flush all issued checkpoints and stop checkpoint issue thread. 1553 * after then, all checkpoints should be done by each process context. 1554 */ 1555 f2fs_stop_ckpt_thread(sbi); 1556 1557 /* 1558 * We don't need to do checkpoint when superblock is clean. 1559 * But, the previous checkpoint was not done by umount, it needs to do 1560 * clean checkpoint again. 1561 */ 1562 if ((is_sbi_flag_set(sbi, SBI_IS_DIRTY) || 1563 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))) { 1564 struct cp_control cpc = { 1565 .reason = CP_UMOUNT, 1566 }; 1567 f2fs_write_checkpoint(sbi, &cpc); 1568 } 1569 1570 /* be sure to wait for any on-going discard commands */ 1571 done = f2fs_issue_discard_timeout(sbi); 1572 if (f2fs_realtime_discard_enable(sbi) && !sbi->discard_blks && done) { 1573 struct cp_control cpc = { 1574 .reason = CP_UMOUNT | CP_TRIMMED, 1575 }; 1576 f2fs_write_checkpoint(sbi, &cpc); 1577 } 1578 1579 /* 1580 * normally superblock is clean, so we need to release this. 1581 * In addition, EIO will skip do checkpoint, we need this as well. 1582 */ 1583 f2fs_release_ino_entry(sbi, true); 1584 1585 f2fs_leave_shrinker(sbi); 1586 mutex_unlock(&sbi->umount_mutex); 1587 1588 /* our cp_error case, we can wait for any writeback page */ 1589 f2fs_flush_merged_writes(sbi); 1590 1591 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA); 1592 1593 f2fs_bug_on(sbi, sbi->fsync_node_num); 1594 1595 f2fs_destroy_compress_inode(sbi); 1596 1597 iput(sbi->node_inode); 1598 sbi->node_inode = NULL; 1599 1600 iput(sbi->meta_inode); 1601 sbi->meta_inode = NULL; 1602 1603 /* 1604 * iput() can update stat information, if f2fs_write_checkpoint() 1605 * above failed with error. 1606 */ 1607 f2fs_destroy_stats(sbi); 1608 1609 /* destroy f2fs internal modules */ 1610 f2fs_destroy_node_manager(sbi); 1611 f2fs_destroy_segment_manager(sbi); 1612 1613 f2fs_destroy_post_read_wq(sbi); 1614 1615 kvfree(sbi->ckpt); 1616 1617 sb->s_fs_info = NULL; 1618 if (sbi->s_chksum_driver) 1619 crypto_free_shash(sbi->s_chksum_driver); 1620 kfree(sbi->raw_super); 1621 1622 destroy_device_list(sbi); 1623 f2fs_destroy_page_array_cache(sbi); 1624 f2fs_destroy_xattr_caches(sbi); 1625 mempool_destroy(sbi->write_io_dummy); 1626 #ifdef CONFIG_QUOTA 1627 for (i = 0; i < MAXQUOTAS; i++) 1628 kfree(F2FS_OPTION(sbi).s_qf_names[i]); 1629 #endif 1630 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy); 1631 destroy_percpu_info(sbi); 1632 f2fs_destroy_iostat(sbi); 1633 for (i = 0; i < NR_PAGE_TYPE; i++) 1634 kvfree(sbi->write_io[i]); 1635 #if IS_ENABLED(CONFIG_UNICODE) 1636 utf8_unload(sb->s_encoding); 1637 #endif 1638 kfree(sbi); 1639 } 1640 1641 int f2fs_sync_fs(struct super_block *sb, int sync) 1642 { 1643 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1644 int err = 0; 1645 1646 if (unlikely(f2fs_cp_error(sbi))) 1647 return 0; 1648 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) 1649 return 0; 1650 1651 trace_f2fs_sync_fs(sb, sync); 1652 1653 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 1654 return -EAGAIN; 1655 1656 if (sync) 1657 err = f2fs_issue_checkpoint(sbi); 1658 1659 return err; 1660 } 1661 1662 static int f2fs_freeze(struct super_block *sb) 1663 { 1664 if (f2fs_readonly(sb)) 1665 return 0; 1666 1667 /* IO error happened before */ 1668 if (unlikely(f2fs_cp_error(F2FS_SB(sb)))) 1669 return -EIO; 1670 1671 /* must be clean, since sync_filesystem() was already called */ 1672 if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY)) 1673 return -EINVAL; 1674 1675 /* Let's flush checkpoints and stop the thread. */ 1676 f2fs_flush_ckpt_thread(F2FS_SB(sb)); 1677 1678 /* to avoid deadlock on f2fs_evict_inode->SB_FREEZE_FS */ 1679 set_sbi_flag(F2FS_SB(sb), SBI_IS_FREEZING); 1680 return 0; 1681 } 1682 1683 static int f2fs_unfreeze(struct super_block *sb) 1684 { 1685 clear_sbi_flag(F2FS_SB(sb), SBI_IS_FREEZING); 1686 return 0; 1687 } 1688 1689 #ifdef CONFIG_QUOTA 1690 static int f2fs_statfs_project(struct super_block *sb, 1691 kprojid_t projid, struct kstatfs *buf) 1692 { 1693 struct kqid qid; 1694 struct dquot *dquot; 1695 u64 limit; 1696 u64 curblock; 1697 1698 qid = make_kqid_projid(projid); 1699 dquot = dqget(sb, qid); 1700 if (IS_ERR(dquot)) 1701 return PTR_ERR(dquot); 1702 spin_lock(&dquot->dq_dqb_lock); 1703 1704 limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit, 1705 dquot->dq_dqb.dqb_bhardlimit); 1706 if (limit) 1707 limit >>= sb->s_blocksize_bits; 1708 1709 if (limit && buf->f_blocks > limit) { 1710 curblock = (dquot->dq_dqb.dqb_curspace + 1711 dquot->dq_dqb.dqb_rsvspace) >> sb->s_blocksize_bits; 1712 buf->f_blocks = limit; 1713 buf->f_bfree = buf->f_bavail = 1714 (buf->f_blocks > curblock) ? 1715 (buf->f_blocks - curblock) : 0; 1716 } 1717 1718 limit = min_not_zero(dquot->dq_dqb.dqb_isoftlimit, 1719 dquot->dq_dqb.dqb_ihardlimit); 1720 1721 if (limit && buf->f_files > limit) { 1722 buf->f_files = limit; 1723 buf->f_ffree = 1724 (buf->f_files > dquot->dq_dqb.dqb_curinodes) ? 1725 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0; 1726 } 1727 1728 spin_unlock(&dquot->dq_dqb_lock); 1729 dqput(dquot); 1730 return 0; 1731 } 1732 #endif 1733 1734 static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf) 1735 { 1736 struct super_block *sb = dentry->d_sb; 1737 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1738 u64 id = huge_encode_dev(sb->s_bdev->bd_dev); 1739 block_t total_count, user_block_count, start_count; 1740 u64 avail_node_count; 1741 unsigned int total_valid_node_count; 1742 1743 total_count = le64_to_cpu(sbi->raw_super->block_count); 1744 start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr); 1745 buf->f_type = F2FS_SUPER_MAGIC; 1746 buf->f_bsize = sbi->blocksize; 1747 1748 buf->f_blocks = total_count - start_count; 1749 1750 spin_lock(&sbi->stat_lock); 1751 1752 user_block_count = sbi->user_block_count; 1753 total_valid_node_count = valid_node_count(sbi); 1754 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM; 1755 buf->f_bfree = user_block_count - valid_user_blocks(sbi) - 1756 sbi->current_reserved_blocks; 1757 1758 if (unlikely(buf->f_bfree <= sbi->unusable_block_count)) 1759 buf->f_bfree = 0; 1760 else 1761 buf->f_bfree -= sbi->unusable_block_count; 1762 spin_unlock(&sbi->stat_lock); 1763 1764 if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks) 1765 buf->f_bavail = buf->f_bfree - 1766 F2FS_OPTION(sbi).root_reserved_blocks; 1767 else 1768 buf->f_bavail = 0; 1769 1770 if (avail_node_count > user_block_count) { 1771 buf->f_files = user_block_count; 1772 buf->f_ffree = buf->f_bavail; 1773 } else { 1774 buf->f_files = avail_node_count; 1775 buf->f_ffree = min(avail_node_count - total_valid_node_count, 1776 buf->f_bavail); 1777 } 1778 1779 buf->f_namelen = F2FS_NAME_LEN; 1780 buf->f_fsid = u64_to_fsid(id); 1781 1782 #ifdef CONFIG_QUOTA 1783 if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) && 1784 sb_has_quota_limits_enabled(sb, PRJQUOTA)) { 1785 f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf); 1786 } 1787 #endif 1788 return 0; 1789 } 1790 1791 static inline void f2fs_show_quota_options(struct seq_file *seq, 1792 struct super_block *sb) 1793 { 1794 #ifdef CONFIG_QUOTA 1795 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1796 1797 if (F2FS_OPTION(sbi).s_jquota_fmt) { 1798 char *fmtname = ""; 1799 1800 switch (F2FS_OPTION(sbi).s_jquota_fmt) { 1801 case QFMT_VFS_OLD: 1802 fmtname = "vfsold"; 1803 break; 1804 case QFMT_VFS_V0: 1805 fmtname = "vfsv0"; 1806 break; 1807 case QFMT_VFS_V1: 1808 fmtname = "vfsv1"; 1809 break; 1810 } 1811 seq_printf(seq, ",jqfmt=%s", fmtname); 1812 } 1813 1814 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA]) 1815 seq_show_option(seq, "usrjquota", 1816 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]); 1817 1818 if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]) 1819 seq_show_option(seq, "grpjquota", 1820 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]); 1821 1822 if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) 1823 seq_show_option(seq, "prjjquota", 1824 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]); 1825 #endif 1826 } 1827 1828 #ifdef CONFIG_F2FS_FS_COMPRESSION 1829 static inline void f2fs_show_compress_options(struct seq_file *seq, 1830 struct super_block *sb) 1831 { 1832 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1833 char *algtype = ""; 1834 int i; 1835 1836 if (!f2fs_sb_has_compression(sbi)) 1837 return; 1838 1839 switch (F2FS_OPTION(sbi).compress_algorithm) { 1840 case COMPRESS_LZO: 1841 algtype = "lzo"; 1842 break; 1843 case COMPRESS_LZ4: 1844 algtype = "lz4"; 1845 break; 1846 case COMPRESS_ZSTD: 1847 algtype = "zstd"; 1848 break; 1849 case COMPRESS_LZORLE: 1850 algtype = "lzo-rle"; 1851 break; 1852 } 1853 seq_printf(seq, ",compress_algorithm=%s", algtype); 1854 1855 if (F2FS_OPTION(sbi).compress_level) 1856 seq_printf(seq, ":%d", F2FS_OPTION(sbi).compress_level); 1857 1858 seq_printf(seq, ",compress_log_size=%u", 1859 F2FS_OPTION(sbi).compress_log_size); 1860 1861 for (i = 0; i < F2FS_OPTION(sbi).compress_ext_cnt; i++) { 1862 seq_printf(seq, ",compress_extension=%s", 1863 F2FS_OPTION(sbi).extensions[i]); 1864 } 1865 1866 for (i = 0; i < F2FS_OPTION(sbi).nocompress_ext_cnt; i++) { 1867 seq_printf(seq, ",nocompress_extension=%s", 1868 F2FS_OPTION(sbi).noextensions[i]); 1869 } 1870 1871 if (F2FS_OPTION(sbi).compress_chksum) 1872 seq_puts(seq, ",compress_chksum"); 1873 1874 if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_FS) 1875 seq_printf(seq, ",compress_mode=%s", "fs"); 1876 else if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_USER) 1877 seq_printf(seq, ",compress_mode=%s", "user"); 1878 1879 if (test_opt(sbi, COMPRESS_CACHE)) 1880 seq_puts(seq, ",compress_cache"); 1881 } 1882 #endif 1883 1884 static int f2fs_show_options(struct seq_file *seq, struct dentry *root) 1885 { 1886 struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb); 1887 1888 if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_SYNC) 1889 seq_printf(seq, ",background_gc=%s", "sync"); 1890 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_ON) 1891 seq_printf(seq, ",background_gc=%s", "on"); 1892 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF) 1893 seq_printf(seq, ",background_gc=%s", "off"); 1894 1895 if (test_opt(sbi, GC_MERGE)) 1896 seq_puts(seq, ",gc_merge"); 1897 else 1898 seq_puts(seq, ",nogc_merge"); 1899 1900 if (test_opt(sbi, DISABLE_ROLL_FORWARD)) 1901 seq_puts(seq, ",disable_roll_forward"); 1902 if (test_opt(sbi, NORECOVERY)) 1903 seq_puts(seq, ",norecovery"); 1904 if (test_opt(sbi, DISCARD)) { 1905 seq_puts(seq, ",discard"); 1906 if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_BLOCK) 1907 seq_printf(seq, ",discard_unit=%s", "block"); 1908 else if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SEGMENT) 1909 seq_printf(seq, ",discard_unit=%s", "segment"); 1910 else if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SECTION) 1911 seq_printf(seq, ",discard_unit=%s", "section"); 1912 } else { 1913 seq_puts(seq, ",nodiscard"); 1914 } 1915 if (test_opt(sbi, NOHEAP)) 1916 seq_puts(seq, ",no_heap"); 1917 else 1918 seq_puts(seq, ",heap"); 1919 #ifdef CONFIG_F2FS_FS_XATTR 1920 if (test_opt(sbi, XATTR_USER)) 1921 seq_puts(seq, ",user_xattr"); 1922 else 1923 seq_puts(seq, ",nouser_xattr"); 1924 if (test_opt(sbi, INLINE_XATTR)) 1925 seq_puts(seq, ",inline_xattr"); 1926 else 1927 seq_puts(seq, ",noinline_xattr"); 1928 if (test_opt(sbi, INLINE_XATTR_SIZE)) 1929 seq_printf(seq, ",inline_xattr_size=%u", 1930 F2FS_OPTION(sbi).inline_xattr_size); 1931 #endif 1932 #ifdef CONFIG_F2FS_FS_POSIX_ACL 1933 if (test_opt(sbi, POSIX_ACL)) 1934 seq_puts(seq, ",acl"); 1935 else 1936 seq_puts(seq, ",noacl"); 1937 #endif 1938 if (test_opt(sbi, DISABLE_EXT_IDENTIFY)) 1939 seq_puts(seq, ",disable_ext_identify"); 1940 if (test_opt(sbi, INLINE_DATA)) 1941 seq_puts(seq, ",inline_data"); 1942 else 1943 seq_puts(seq, ",noinline_data"); 1944 if (test_opt(sbi, INLINE_DENTRY)) 1945 seq_puts(seq, ",inline_dentry"); 1946 else 1947 seq_puts(seq, ",noinline_dentry"); 1948 if (test_opt(sbi, FLUSH_MERGE)) 1949 seq_puts(seq, ",flush_merge"); 1950 else 1951 seq_puts(seq, ",noflush_merge"); 1952 if (test_opt(sbi, NOBARRIER)) 1953 seq_puts(seq, ",nobarrier"); 1954 else 1955 seq_puts(seq, ",barrier"); 1956 if (test_opt(sbi, FASTBOOT)) 1957 seq_puts(seq, ",fastboot"); 1958 if (test_opt(sbi, READ_EXTENT_CACHE)) 1959 seq_puts(seq, ",extent_cache"); 1960 else 1961 seq_puts(seq, ",noextent_cache"); 1962 if (test_opt(sbi, AGE_EXTENT_CACHE)) 1963 seq_puts(seq, ",age_extent_cache"); 1964 if (test_opt(sbi, DATA_FLUSH)) 1965 seq_puts(seq, ",data_flush"); 1966 1967 seq_puts(seq, ",mode="); 1968 if (F2FS_OPTION(sbi).fs_mode == FS_MODE_ADAPTIVE) 1969 seq_puts(seq, "adaptive"); 1970 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_LFS) 1971 seq_puts(seq, "lfs"); 1972 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_SEG) 1973 seq_puts(seq, "fragment:segment"); 1974 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_BLK) 1975 seq_puts(seq, "fragment:block"); 1976 seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs); 1977 if (test_opt(sbi, RESERVE_ROOT)) 1978 seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u", 1979 F2FS_OPTION(sbi).root_reserved_blocks, 1980 from_kuid_munged(&init_user_ns, 1981 F2FS_OPTION(sbi).s_resuid), 1982 from_kgid_munged(&init_user_ns, 1983 F2FS_OPTION(sbi).s_resgid)); 1984 if (F2FS_IO_SIZE_BITS(sbi)) 1985 seq_printf(seq, ",io_bits=%u", 1986 F2FS_OPTION(sbi).write_io_size_bits); 1987 #ifdef CONFIG_F2FS_FAULT_INJECTION 1988 if (test_opt(sbi, FAULT_INJECTION)) { 1989 seq_printf(seq, ",fault_injection=%u", 1990 F2FS_OPTION(sbi).fault_info.inject_rate); 1991 seq_printf(seq, ",fault_type=%u", 1992 F2FS_OPTION(sbi).fault_info.inject_type); 1993 } 1994 #endif 1995 #ifdef CONFIG_QUOTA 1996 if (test_opt(sbi, QUOTA)) 1997 seq_puts(seq, ",quota"); 1998 if (test_opt(sbi, USRQUOTA)) 1999 seq_puts(seq, ",usrquota"); 2000 if (test_opt(sbi, GRPQUOTA)) 2001 seq_puts(seq, ",grpquota"); 2002 if (test_opt(sbi, PRJQUOTA)) 2003 seq_puts(seq, ",prjquota"); 2004 #endif 2005 f2fs_show_quota_options(seq, sbi->sb); 2006 2007 fscrypt_show_test_dummy_encryption(seq, ',', sbi->sb); 2008 2009 if (sbi->sb->s_flags & SB_INLINECRYPT) 2010 seq_puts(seq, ",inlinecrypt"); 2011 2012 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT) 2013 seq_printf(seq, ",alloc_mode=%s", "default"); 2014 else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE) 2015 seq_printf(seq, ",alloc_mode=%s", "reuse"); 2016 2017 if (test_opt(sbi, DISABLE_CHECKPOINT)) 2018 seq_printf(seq, ",checkpoint=disable:%u", 2019 F2FS_OPTION(sbi).unusable_cap); 2020 if (test_opt(sbi, MERGE_CHECKPOINT)) 2021 seq_puts(seq, ",checkpoint_merge"); 2022 else 2023 seq_puts(seq, ",nocheckpoint_merge"); 2024 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX) 2025 seq_printf(seq, ",fsync_mode=%s", "posix"); 2026 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) 2027 seq_printf(seq, ",fsync_mode=%s", "strict"); 2028 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER) 2029 seq_printf(seq, ",fsync_mode=%s", "nobarrier"); 2030 2031 #ifdef CONFIG_F2FS_FS_COMPRESSION 2032 f2fs_show_compress_options(seq, sbi->sb); 2033 #endif 2034 2035 if (test_opt(sbi, ATGC)) 2036 seq_puts(seq, ",atgc"); 2037 2038 if (F2FS_OPTION(sbi).memory_mode == MEMORY_MODE_NORMAL) 2039 seq_printf(seq, ",memory=%s", "normal"); 2040 else if (F2FS_OPTION(sbi).memory_mode == MEMORY_MODE_LOW) 2041 seq_printf(seq, ",memory=%s", "low"); 2042 2043 return 0; 2044 } 2045 2046 static void default_options(struct f2fs_sb_info *sbi) 2047 { 2048 /* init some FS parameters */ 2049 if (f2fs_sb_has_readonly(sbi)) 2050 F2FS_OPTION(sbi).active_logs = NR_CURSEG_RO_TYPE; 2051 else 2052 F2FS_OPTION(sbi).active_logs = NR_CURSEG_PERSIST_TYPE; 2053 2054 F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS; 2055 if (le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_main) <= 2056 SMALL_VOLUME_SEGMENTS) 2057 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE; 2058 else 2059 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT; 2060 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX; 2061 F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID); 2062 F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID); 2063 F2FS_OPTION(sbi).compress_algorithm = COMPRESS_LZ4; 2064 F2FS_OPTION(sbi).compress_log_size = MIN_COMPRESS_LOG_SIZE; 2065 F2FS_OPTION(sbi).compress_ext_cnt = 0; 2066 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS; 2067 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON; 2068 F2FS_OPTION(sbi).memory_mode = MEMORY_MODE_NORMAL; 2069 2070 sbi->sb->s_flags &= ~SB_INLINECRYPT; 2071 2072 set_opt(sbi, INLINE_XATTR); 2073 set_opt(sbi, INLINE_DATA); 2074 set_opt(sbi, INLINE_DENTRY); 2075 set_opt(sbi, READ_EXTENT_CACHE); 2076 set_opt(sbi, NOHEAP); 2077 clear_opt(sbi, DISABLE_CHECKPOINT); 2078 set_opt(sbi, MERGE_CHECKPOINT); 2079 F2FS_OPTION(sbi).unusable_cap = 0; 2080 sbi->sb->s_flags |= SB_LAZYTIME; 2081 if (!f2fs_is_readonly(sbi)) 2082 set_opt(sbi, FLUSH_MERGE); 2083 if (f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) 2084 set_opt(sbi, DISCARD); 2085 if (f2fs_sb_has_blkzoned(sbi)) { 2086 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS; 2087 F2FS_OPTION(sbi).discard_unit = DISCARD_UNIT_SECTION; 2088 } else { 2089 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE; 2090 F2FS_OPTION(sbi).discard_unit = DISCARD_UNIT_BLOCK; 2091 } 2092 2093 #ifdef CONFIG_F2FS_FS_XATTR 2094 set_opt(sbi, XATTR_USER); 2095 #endif 2096 #ifdef CONFIG_F2FS_FS_POSIX_ACL 2097 set_opt(sbi, POSIX_ACL); 2098 #endif 2099 2100 f2fs_build_fault_attr(sbi, 0, 0); 2101 } 2102 2103 #ifdef CONFIG_QUOTA 2104 static int f2fs_enable_quotas(struct super_block *sb); 2105 #endif 2106 2107 static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi) 2108 { 2109 unsigned int s_flags = sbi->sb->s_flags; 2110 struct cp_control cpc; 2111 unsigned int gc_mode = sbi->gc_mode; 2112 int err = 0; 2113 int ret; 2114 block_t unusable; 2115 2116 if (s_flags & SB_RDONLY) { 2117 f2fs_err(sbi, "checkpoint=disable on readonly fs"); 2118 return -EINVAL; 2119 } 2120 sbi->sb->s_flags |= SB_ACTIVE; 2121 2122 /* check if we need more GC first */ 2123 unusable = f2fs_get_unusable_blocks(sbi); 2124 if (!f2fs_disable_cp_again(sbi, unusable)) 2125 goto skip_gc; 2126 2127 f2fs_update_time(sbi, DISABLE_TIME); 2128 2129 sbi->gc_mode = GC_URGENT_HIGH; 2130 2131 while (!f2fs_time_over(sbi, DISABLE_TIME)) { 2132 struct f2fs_gc_control gc_control = { 2133 .victim_segno = NULL_SEGNO, 2134 .init_gc_type = FG_GC, 2135 .should_migrate_blocks = false, 2136 .err_gc_skipped = true, 2137 .nr_free_secs = 1 }; 2138 2139 f2fs_down_write(&sbi->gc_lock); 2140 err = f2fs_gc(sbi, &gc_control); 2141 if (err == -ENODATA) { 2142 err = 0; 2143 break; 2144 } 2145 if (err && err != -EAGAIN) 2146 break; 2147 } 2148 2149 ret = sync_filesystem(sbi->sb); 2150 if (ret || err) { 2151 err = ret ? ret : err; 2152 goto restore_flag; 2153 } 2154 2155 unusable = f2fs_get_unusable_blocks(sbi); 2156 if (f2fs_disable_cp_again(sbi, unusable)) { 2157 err = -EAGAIN; 2158 goto restore_flag; 2159 } 2160 2161 skip_gc: 2162 f2fs_down_write(&sbi->gc_lock); 2163 cpc.reason = CP_PAUSE; 2164 set_sbi_flag(sbi, SBI_CP_DISABLED); 2165 err = f2fs_write_checkpoint(sbi, &cpc); 2166 if (err) 2167 goto out_unlock; 2168 2169 spin_lock(&sbi->stat_lock); 2170 sbi->unusable_block_count = unusable; 2171 spin_unlock(&sbi->stat_lock); 2172 2173 out_unlock: 2174 f2fs_up_write(&sbi->gc_lock); 2175 restore_flag: 2176 sbi->gc_mode = gc_mode; 2177 sbi->sb->s_flags = s_flags; /* Restore SB_RDONLY status */ 2178 return err; 2179 } 2180 2181 static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi) 2182 { 2183 int retry = DEFAULT_RETRY_IO_COUNT; 2184 2185 /* we should flush all the data to keep data consistency */ 2186 do { 2187 sync_inodes_sb(sbi->sb); 2188 f2fs_io_schedule_timeout(DEFAULT_IO_TIMEOUT); 2189 } while (get_pages(sbi, F2FS_DIRTY_DATA) && retry--); 2190 2191 if (unlikely(retry < 0)) 2192 f2fs_warn(sbi, "checkpoint=enable has some unwritten data."); 2193 2194 f2fs_down_write(&sbi->gc_lock); 2195 f2fs_dirty_to_prefree(sbi); 2196 2197 clear_sbi_flag(sbi, SBI_CP_DISABLED); 2198 set_sbi_flag(sbi, SBI_IS_DIRTY); 2199 f2fs_up_write(&sbi->gc_lock); 2200 2201 f2fs_sync_fs(sbi->sb, 1); 2202 2203 /* Let's ensure there's no pending checkpoint anymore */ 2204 f2fs_flush_ckpt_thread(sbi); 2205 } 2206 2207 static int f2fs_remount(struct super_block *sb, int *flags, char *data) 2208 { 2209 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2210 struct f2fs_mount_info org_mount_opt; 2211 unsigned long old_sb_flags; 2212 int err; 2213 bool need_restart_gc = false, need_stop_gc = false; 2214 bool need_restart_ckpt = false, need_stop_ckpt = false; 2215 bool need_restart_flush = false, need_stop_flush = false; 2216 bool need_restart_discard = false, need_stop_discard = false; 2217 bool no_read_extent_cache = !test_opt(sbi, READ_EXTENT_CACHE); 2218 bool no_age_extent_cache = !test_opt(sbi, AGE_EXTENT_CACHE); 2219 bool enable_checkpoint = !test_opt(sbi, DISABLE_CHECKPOINT); 2220 bool no_io_align = !F2FS_IO_ALIGNED(sbi); 2221 bool no_atgc = !test_opt(sbi, ATGC); 2222 bool no_discard = !test_opt(sbi, DISCARD); 2223 bool no_compress_cache = !test_opt(sbi, COMPRESS_CACHE); 2224 bool block_unit_discard = f2fs_block_unit_discard(sbi); 2225 #ifdef CONFIG_QUOTA 2226 int i, j; 2227 #endif 2228 2229 /* 2230 * Save the old mount options in case we 2231 * need to restore them. 2232 */ 2233 org_mount_opt = sbi->mount_opt; 2234 old_sb_flags = sb->s_flags; 2235 2236 #ifdef CONFIG_QUOTA 2237 org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt; 2238 for (i = 0; i < MAXQUOTAS; i++) { 2239 if (F2FS_OPTION(sbi).s_qf_names[i]) { 2240 org_mount_opt.s_qf_names[i] = 2241 kstrdup(F2FS_OPTION(sbi).s_qf_names[i], 2242 GFP_KERNEL); 2243 if (!org_mount_opt.s_qf_names[i]) { 2244 for (j = 0; j < i; j++) 2245 kfree(org_mount_opt.s_qf_names[j]); 2246 return -ENOMEM; 2247 } 2248 } else { 2249 org_mount_opt.s_qf_names[i] = NULL; 2250 } 2251 } 2252 #endif 2253 2254 /* recover superblocks we couldn't write due to previous RO mount */ 2255 if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) { 2256 err = f2fs_commit_super(sbi, false); 2257 f2fs_info(sbi, "Try to recover all the superblocks, ret: %d", 2258 err); 2259 if (!err) 2260 clear_sbi_flag(sbi, SBI_NEED_SB_WRITE); 2261 } 2262 2263 default_options(sbi); 2264 2265 /* parse mount options */ 2266 err = parse_options(sb, data, true); 2267 if (err) 2268 goto restore_opts; 2269 2270 /* 2271 * Previous and new state of filesystem is RO, 2272 * so skip checking GC and FLUSH_MERGE conditions. 2273 */ 2274 if (f2fs_readonly(sb) && (*flags & SB_RDONLY)) 2275 goto skip; 2276 2277 if (f2fs_sb_has_readonly(sbi) && !(*flags & SB_RDONLY)) { 2278 err = -EROFS; 2279 goto restore_opts; 2280 } 2281 2282 #ifdef CONFIG_QUOTA 2283 if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) { 2284 err = dquot_suspend(sb, -1); 2285 if (err < 0) 2286 goto restore_opts; 2287 } else if (f2fs_readonly(sb) && !(*flags & SB_RDONLY)) { 2288 /* dquot_resume needs RW */ 2289 sb->s_flags &= ~SB_RDONLY; 2290 if (sb_any_quota_suspended(sb)) { 2291 dquot_resume(sb, -1); 2292 } else if (f2fs_sb_has_quota_ino(sbi)) { 2293 err = f2fs_enable_quotas(sb); 2294 if (err) 2295 goto restore_opts; 2296 } 2297 } 2298 #endif 2299 if (f2fs_lfs_mode(sbi) && !IS_F2FS_IPU_DISABLE(sbi)) { 2300 err = -EINVAL; 2301 f2fs_warn(sbi, "LFS is not compatible with IPU"); 2302 goto restore_opts; 2303 } 2304 2305 /* disallow enable atgc dynamically */ 2306 if (no_atgc == !!test_opt(sbi, ATGC)) { 2307 err = -EINVAL; 2308 f2fs_warn(sbi, "switch atgc option is not allowed"); 2309 goto restore_opts; 2310 } 2311 2312 /* disallow enable/disable extent_cache dynamically */ 2313 if (no_read_extent_cache == !!test_opt(sbi, READ_EXTENT_CACHE)) { 2314 err = -EINVAL; 2315 f2fs_warn(sbi, "switch extent_cache option is not allowed"); 2316 goto restore_opts; 2317 } 2318 /* disallow enable/disable age extent_cache dynamically */ 2319 if (no_age_extent_cache == !!test_opt(sbi, AGE_EXTENT_CACHE)) { 2320 err = -EINVAL; 2321 f2fs_warn(sbi, "switch age_extent_cache option is not allowed"); 2322 goto restore_opts; 2323 } 2324 2325 if (no_io_align == !!F2FS_IO_ALIGNED(sbi)) { 2326 err = -EINVAL; 2327 f2fs_warn(sbi, "switch io_bits option is not allowed"); 2328 goto restore_opts; 2329 } 2330 2331 if (no_compress_cache == !!test_opt(sbi, COMPRESS_CACHE)) { 2332 err = -EINVAL; 2333 f2fs_warn(sbi, "switch compress_cache option is not allowed"); 2334 goto restore_opts; 2335 } 2336 2337 if (block_unit_discard != f2fs_block_unit_discard(sbi)) { 2338 err = -EINVAL; 2339 f2fs_warn(sbi, "switch discard_unit option is not allowed"); 2340 goto restore_opts; 2341 } 2342 2343 if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) { 2344 err = -EINVAL; 2345 f2fs_warn(sbi, "disabling checkpoint not compatible with read-only"); 2346 goto restore_opts; 2347 } 2348 2349 /* 2350 * We stop the GC thread if FS is mounted as RO 2351 * or if background_gc = off is passed in mount 2352 * option. Also sync the filesystem. 2353 */ 2354 if ((*flags & SB_RDONLY) || 2355 (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF && 2356 !test_opt(sbi, GC_MERGE))) { 2357 if (sbi->gc_thread) { 2358 f2fs_stop_gc_thread(sbi); 2359 need_restart_gc = true; 2360 } 2361 } else if (!sbi->gc_thread) { 2362 err = f2fs_start_gc_thread(sbi); 2363 if (err) 2364 goto restore_opts; 2365 need_stop_gc = true; 2366 } 2367 2368 if (*flags & SB_RDONLY) { 2369 sync_inodes_sb(sb); 2370 2371 set_sbi_flag(sbi, SBI_IS_DIRTY); 2372 set_sbi_flag(sbi, SBI_IS_CLOSE); 2373 f2fs_sync_fs(sb, 1); 2374 clear_sbi_flag(sbi, SBI_IS_CLOSE); 2375 } 2376 2377 if ((*flags & SB_RDONLY) || test_opt(sbi, DISABLE_CHECKPOINT) || 2378 !test_opt(sbi, MERGE_CHECKPOINT)) { 2379 f2fs_stop_ckpt_thread(sbi); 2380 need_restart_ckpt = true; 2381 } else { 2382 /* Flush if the prevous checkpoint, if exists. */ 2383 f2fs_flush_ckpt_thread(sbi); 2384 2385 err = f2fs_start_ckpt_thread(sbi); 2386 if (err) { 2387 f2fs_err(sbi, 2388 "Failed to start F2FS issue_checkpoint_thread (%d)", 2389 err); 2390 goto restore_gc; 2391 } 2392 need_stop_ckpt = true; 2393 } 2394 2395 /* 2396 * We stop issue flush thread if FS is mounted as RO 2397 * or if flush_merge is not passed in mount option. 2398 */ 2399 if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) { 2400 clear_opt(sbi, FLUSH_MERGE); 2401 f2fs_destroy_flush_cmd_control(sbi, false); 2402 need_restart_flush = true; 2403 } else { 2404 err = f2fs_create_flush_cmd_control(sbi); 2405 if (err) 2406 goto restore_ckpt; 2407 need_stop_flush = true; 2408 } 2409 2410 if (no_discard == !!test_opt(sbi, DISCARD)) { 2411 if (test_opt(sbi, DISCARD)) { 2412 err = f2fs_start_discard_thread(sbi); 2413 if (err) 2414 goto restore_flush; 2415 need_stop_discard = true; 2416 } else { 2417 f2fs_stop_discard_thread(sbi); 2418 f2fs_issue_discard_timeout(sbi); 2419 need_restart_discard = true; 2420 } 2421 } 2422 2423 if (enable_checkpoint == !!test_opt(sbi, DISABLE_CHECKPOINT)) { 2424 if (test_opt(sbi, DISABLE_CHECKPOINT)) { 2425 err = f2fs_disable_checkpoint(sbi); 2426 if (err) 2427 goto restore_discard; 2428 } else { 2429 f2fs_enable_checkpoint(sbi); 2430 } 2431 } 2432 2433 skip: 2434 #ifdef CONFIG_QUOTA 2435 /* Release old quota file names */ 2436 for (i = 0; i < MAXQUOTAS; i++) 2437 kfree(org_mount_opt.s_qf_names[i]); 2438 #endif 2439 /* Update the POSIXACL Flag */ 2440 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) | 2441 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0); 2442 2443 limit_reserve_root(sbi); 2444 adjust_unusable_cap_perc(sbi); 2445 *flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME); 2446 return 0; 2447 restore_discard: 2448 if (need_restart_discard) { 2449 if (f2fs_start_discard_thread(sbi)) 2450 f2fs_warn(sbi, "discard has been stopped"); 2451 } else if (need_stop_discard) { 2452 f2fs_stop_discard_thread(sbi); 2453 } 2454 restore_flush: 2455 if (need_restart_flush) { 2456 if (f2fs_create_flush_cmd_control(sbi)) 2457 f2fs_warn(sbi, "background flush thread has stopped"); 2458 } else if (need_stop_flush) { 2459 clear_opt(sbi, FLUSH_MERGE); 2460 f2fs_destroy_flush_cmd_control(sbi, false); 2461 } 2462 restore_ckpt: 2463 if (need_restart_ckpt) { 2464 if (f2fs_start_ckpt_thread(sbi)) 2465 f2fs_warn(sbi, "background ckpt thread has stopped"); 2466 } else if (need_stop_ckpt) { 2467 f2fs_stop_ckpt_thread(sbi); 2468 } 2469 restore_gc: 2470 if (need_restart_gc) { 2471 if (f2fs_start_gc_thread(sbi)) 2472 f2fs_warn(sbi, "background gc thread has stopped"); 2473 } else if (need_stop_gc) { 2474 f2fs_stop_gc_thread(sbi); 2475 } 2476 restore_opts: 2477 #ifdef CONFIG_QUOTA 2478 F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt; 2479 for (i = 0; i < MAXQUOTAS; i++) { 2480 kfree(F2FS_OPTION(sbi).s_qf_names[i]); 2481 F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i]; 2482 } 2483 #endif 2484 sbi->mount_opt = org_mount_opt; 2485 sb->s_flags = old_sb_flags; 2486 return err; 2487 } 2488 2489 #ifdef CONFIG_QUOTA 2490 /* Read data from quotafile */ 2491 static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data, 2492 size_t len, loff_t off) 2493 { 2494 struct inode *inode = sb_dqopt(sb)->files[type]; 2495 struct address_space *mapping = inode->i_mapping; 2496 block_t blkidx = F2FS_BYTES_TO_BLK(off); 2497 int offset = off & (sb->s_blocksize - 1); 2498 int tocopy; 2499 size_t toread; 2500 loff_t i_size = i_size_read(inode); 2501 struct page *page; 2502 2503 if (off > i_size) 2504 return 0; 2505 2506 if (off + len > i_size) 2507 len = i_size - off; 2508 toread = len; 2509 while (toread > 0) { 2510 tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread); 2511 repeat: 2512 page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS); 2513 if (IS_ERR(page)) { 2514 if (PTR_ERR(page) == -ENOMEM) { 2515 memalloc_retry_wait(GFP_NOFS); 2516 goto repeat; 2517 } 2518 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2519 return PTR_ERR(page); 2520 } 2521 2522 lock_page(page); 2523 2524 if (unlikely(page->mapping != mapping)) { 2525 f2fs_put_page(page, 1); 2526 goto repeat; 2527 } 2528 if (unlikely(!PageUptodate(page))) { 2529 f2fs_put_page(page, 1); 2530 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2531 return -EIO; 2532 } 2533 2534 memcpy_from_page(data, page, offset, tocopy); 2535 f2fs_put_page(page, 1); 2536 2537 offset = 0; 2538 toread -= tocopy; 2539 data += tocopy; 2540 blkidx++; 2541 } 2542 return len; 2543 } 2544 2545 /* Write to quotafile */ 2546 static ssize_t f2fs_quota_write(struct super_block *sb, int type, 2547 const char *data, size_t len, loff_t off) 2548 { 2549 struct inode *inode = sb_dqopt(sb)->files[type]; 2550 struct address_space *mapping = inode->i_mapping; 2551 const struct address_space_operations *a_ops = mapping->a_ops; 2552 int offset = off & (sb->s_blocksize - 1); 2553 size_t towrite = len; 2554 struct page *page; 2555 void *fsdata = NULL; 2556 int err = 0; 2557 int tocopy; 2558 2559 while (towrite > 0) { 2560 tocopy = min_t(unsigned long, sb->s_blocksize - offset, 2561 towrite); 2562 retry: 2563 err = a_ops->write_begin(NULL, mapping, off, tocopy, 2564 &page, &fsdata); 2565 if (unlikely(err)) { 2566 if (err == -ENOMEM) { 2567 f2fs_io_schedule_timeout(DEFAULT_IO_TIMEOUT); 2568 goto retry; 2569 } 2570 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2571 break; 2572 } 2573 2574 memcpy_to_page(page, offset, data, tocopy); 2575 2576 a_ops->write_end(NULL, mapping, off, tocopy, tocopy, 2577 page, fsdata); 2578 offset = 0; 2579 towrite -= tocopy; 2580 off += tocopy; 2581 data += tocopy; 2582 cond_resched(); 2583 } 2584 2585 if (len == towrite) 2586 return err; 2587 inode->i_mtime = inode->i_ctime = current_time(inode); 2588 f2fs_mark_inode_dirty_sync(inode, false); 2589 return len - towrite; 2590 } 2591 2592 int f2fs_dquot_initialize(struct inode *inode) 2593 { 2594 if (time_to_inject(F2FS_I_SB(inode), FAULT_DQUOT_INIT)) 2595 return -ESRCH; 2596 2597 return dquot_initialize(inode); 2598 } 2599 2600 static struct dquot **f2fs_get_dquots(struct inode *inode) 2601 { 2602 return F2FS_I(inode)->i_dquot; 2603 } 2604 2605 static qsize_t *f2fs_get_reserved_space(struct inode *inode) 2606 { 2607 return &F2FS_I(inode)->i_reserved_quota; 2608 } 2609 2610 static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type) 2611 { 2612 if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) { 2613 f2fs_err(sbi, "quota sysfile may be corrupted, skip loading it"); 2614 return 0; 2615 } 2616 2617 return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type], 2618 F2FS_OPTION(sbi).s_jquota_fmt, type); 2619 } 2620 2621 int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly) 2622 { 2623 int enabled = 0; 2624 int i, err; 2625 2626 if (f2fs_sb_has_quota_ino(sbi) && rdonly) { 2627 err = f2fs_enable_quotas(sbi->sb); 2628 if (err) { 2629 f2fs_err(sbi, "Cannot turn on quota_ino: %d", err); 2630 return 0; 2631 } 2632 return 1; 2633 } 2634 2635 for (i = 0; i < MAXQUOTAS; i++) { 2636 if (F2FS_OPTION(sbi).s_qf_names[i]) { 2637 err = f2fs_quota_on_mount(sbi, i); 2638 if (!err) { 2639 enabled = 1; 2640 continue; 2641 } 2642 f2fs_err(sbi, "Cannot turn on quotas: %d on %d", 2643 err, i); 2644 } 2645 } 2646 return enabled; 2647 } 2648 2649 static int f2fs_quota_enable(struct super_block *sb, int type, int format_id, 2650 unsigned int flags) 2651 { 2652 struct inode *qf_inode; 2653 unsigned long qf_inum; 2654 int err; 2655 2656 BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb))); 2657 2658 qf_inum = f2fs_qf_ino(sb, type); 2659 if (!qf_inum) 2660 return -EPERM; 2661 2662 qf_inode = f2fs_iget(sb, qf_inum); 2663 if (IS_ERR(qf_inode)) { 2664 f2fs_err(F2FS_SB(sb), "Bad quota inode %u:%lu", type, qf_inum); 2665 return PTR_ERR(qf_inode); 2666 } 2667 2668 /* Don't account quota for quota files to avoid recursion */ 2669 qf_inode->i_flags |= S_NOQUOTA; 2670 err = dquot_load_quota_inode(qf_inode, type, format_id, flags); 2671 iput(qf_inode); 2672 return err; 2673 } 2674 2675 static int f2fs_enable_quotas(struct super_block *sb) 2676 { 2677 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2678 int type, err = 0; 2679 unsigned long qf_inum; 2680 bool quota_mopt[MAXQUOTAS] = { 2681 test_opt(sbi, USRQUOTA), 2682 test_opt(sbi, GRPQUOTA), 2683 test_opt(sbi, PRJQUOTA), 2684 }; 2685 2686 if (is_set_ckpt_flags(F2FS_SB(sb), CP_QUOTA_NEED_FSCK_FLAG)) { 2687 f2fs_err(sbi, "quota file may be corrupted, skip loading it"); 2688 return 0; 2689 } 2690 2691 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE; 2692 2693 for (type = 0; type < MAXQUOTAS; type++) { 2694 qf_inum = f2fs_qf_ino(sb, type); 2695 if (qf_inum) { 2696 err = f2fs_quota_enable(sb, type, QFMT_VFS_V1, 2697 DQUOT_USAGE_ENABLED | 2698 (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0)); 2699 if (err) { 2700 f2fs_err(sbi, "Failed to enable quota tracking (type=%d, err=%d). Please run fsck to fix.", 2701 type, err); 2702 for (type--; type >= 0; type--) 2703 dquot_quota_off(sb, type); 2704 set_sbi_flag(F2FS_SB(sb), 2705 SBI_QUOTA_NEED_REPAIR); 2706 return err; 2707 } 2708 } 2709 } 2710 return 0; 2711 } 2712 2713 static int f2fs_quota_sync_file(struct f2fs_sb_info *sbi, int type) 2714 { 2715 struct quota_info *dqopt = sb_dqopt(sbi->sb); 2716 struct address_space *mapping = dqopt->files[type]->i_mapping; 2717 int ret = 0; 2718 2719 ret = dquot_writeback_dquots(sbi->sb, type); 2720 if (ret) 2721 goto out; 2722 2723 ret = filemap_fdatawrite(mapping); 2724 if (ret) 2725 goto out; 2726 2727 /* if we are using journalled quota */ 2728 if (is_journalled_quota(sbi)) 2729 goto out; 2730 2731 ret = filemap_fdatawait(mapping); 2732 2733 truncate_inode_pages(&dqopt->files[type]->i_data, 0); 2734 out: 2735 if (ret) 2736 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2737 return ret; 2738 } 2739 2740 int f2fs_quota_sync(struct super_block *sb, int type) 2741 { 2742 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2743 struct quota_info *dqopt = sb_dqopt(sb); 2744 int cnt; 2745 int ret = 0; 2746 2747 /* 2748 * Now when everything is written we can discard the pagecache so 2749 * that userspace sees the changes. 2750 */ 2751 for (cnt = 0; cnt < MAXQUOTAS; cnt++) { 2752 2753 if (type != -1 && cnt != type) 2754 continue; 2755 2756 if (!sb_has_quota_active(sb, cnt)) 2757 continue; 2758 2759 if (!f2fs_sb_has_quota_ino(sbi)) 2760 inode_lock(dqopt->files[cnt]); 2761 2762 /* 2763 * do_quotactl 2764 * f2fs_quota_sync 2765 * f2fs_down_read(quota_sem) 2766 * dquot_writeback_dquots() 2767 * f2fs_dquot_commit 2768 * block_operation 2769 * f2fs_down_read(quota_sem) 2770 */ 2771 f2fs_lock_op(sbi); 2772 f2fs_down_read(&sbi->quota_sem); 2773 2774 ret = f2fs_quota_sync_file(sbi, cnt); 2775 2776 f2fs_up_read(&sbi->quota_sem); 2777 f2fs_unlock_op(sbi); 2778 2779 if (!f2fs_sb_has_quota_ino(sbi)) 2780 inode_unlock(dqopt->files[cnt]); 2781 2782 if (ret) 2783 break; 2784 } 2785 return ret; 2786 } 2787 2788 static int f2fs_quota_on(struct super_block *sb, int type, int format_id, 2789 const struct path *path) 2790 { 2791 struct inode *inode; 2792 int err; 2793 2794 /* if quota sysfile exists, deny enabling quota with specific file */ 2795 if (f2fs_sb_has_quota_ino(F2FS_SB(sb))) { 2796 f2fs_err(F2FS_SB(sb), "quota sysfile already exists"); 2797 return -EBUSY; 2798 } 2799 2800 err = f2fs_quota_sync(sb, type); 2801 if (err) 2802 return err; 2803 2804 err = dquot_quota_on(sb, type, format_id, path); 2805 if (err) 2806 return err; 2807 2808 inode = d_inode(path->dentry); 2809 2810 inode_lock(inode); 2811 F2FS_I(inode)->i_flags |= F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL; 2812 f2fs_set_inode_flags(inode); 2813 inode_unlock(inode); 2814 f2fs_mark_inode_dirty_sync(inode, false); 2815 2816 return 0; 2817 } 2818 2819 static int __f2fs_quota_off(struct super_block *sb, int type) 2820 { 2821 struct inode *inode = sb_dqopt(sb)->files[type]; 2822 int err; 2823 2824 if (!inode || !igrab(inode)) 2825 return dquot_quota_off(sb, type); 2826 2827 err = f2fs_quota_sync(sb, type); 2828 if (err) 2829 goto out_put; 2830 2831 err = dquot_quota_off(sb, type); 2832 if (err || f2fs_sb_has_quota_ino(F2FS_SB(sb))) 2833 goto out_put; 2834 2835 inode_lock(inode); 2836 F2FS_I(inode)->i_flags &= ~(F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL); 2837 f2fs_set_inode_flags(inode); 2838 inode_unlock(inode); 2839 f2fs_mark_inode_dirty_sync(inode, false); 2840 out_put: 2841 iput(inode); 2842 return err; 2843 } 2844 2845 static int f2fs_quota_off(struct super_block *sb, int type) 2846 { 2847 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2848 int err; 2849 2850 err = __f2fs_quota_off(sb, type); 2851 2852 /* 2853 * quotactl can shutdown journalled quota, result in inconsistence 2854 * between quota record and fs data by following updates, tag the 2855 * flag to let fsck be aware of it. 2856 */ 2857 if (is_journalled_quota(sbi)) 2858 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2859 return err; 2860 } 2861 2862 void f2fs_quota_off_umount(struct super_block *sb) 2863 { 2864 int type; 2865 int err; 2866 2867 for (type = 0; type < MAXQUOTAS; type++) { 2868 err = __f2fs_quota_off(sb, type); 2869 if (err) { 2870 int ret = dquot_quota_off(sb, type); 2871 2872 f2fs_err(F2FS_SB(sb), "Fail to turn off disk quota (type: %d, err: %d, ret:%d), Please run fsck to fix it.", 2873 type, err, ret); 2874 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2875 } 2876 } 2877 /* 2878 * In case of checkpoint=disable, we must flush quota blocks. 2879 * This can cause NULL exception for node_inode in end_io, since 2880 * put_super already dropped it. 2881 */ 2882 sync_filesystem(sb); 2883 } 2884 2885 static void f2fs_truncate_quota_inode_pages(struct super_block *sb) 2886 { 2887 struct quota_info *dqopt = sb_dqopt(sb); 2888 int type; 2889 2890 for (type = 0; type < MAXQUOTAS; type++) { 2891 if (!dqopt->files[type]) 2892 continue; 2893 f2fs_inode_synced(dqopt->files[type]); 2894 } 2895 } 2896 2897 static int f2fs_dquot_commit(struct dquot *dquot) 2898 { 2899 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb); 2900 int ret; 2901 2902 f2fs_down_read_nested(&sbi->quota_sem, SINGLE_DEPTH_NESTING); 2903 ret = dquot_commit(dquot); 2904 if (ret < 0) 2905 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2906 f2fs_up_read(&sbi->quota_sem); 2907 return ret; 2908 } 2909 2910 static int f2fs_dquot_acquire(struct dquot *dquot) 2911 { 2912 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb); 2913 int ret; 2914 2915 f2fs_down_read(&sbi->quota_sem); 2916 ret = dquot_acquire(dquot); 2917 if (ret < 0) 2918 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2919 f2fs_up_read(&sbi->quota_sem); 2920 return ret; 2921 } 2922 2923 static int f2fs_dquot_release(struct dquot *dquot) 2924 { 2925 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb); 2926 int ret = dquot_release(dquot); 2927 2928 if (ret < 0) 2929 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2930 return ret; 2931 } 2932 2933 static int f2fs_dquot_mark_dquot_dirty(struct dquot *dquot) 2934 { 2935 struct super_block *sb = dquot->dq_sb; 2936 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2937 int ret = dquot_mark_dquot_dirty(dquot); 2938 2939 /* if we are using journalled quota */ 2940 if (is_journalled_quota(sbi)) 2941 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH); 2942 2943 return ret; 2944 } 2945 2946 static int f2fs_dquot_commit_info(struct super_block *sb, int type) 2947 { 2948 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2949 int ret = dquot_commit_info(sb, type); 2950 2951 if (ret < 0) 2952 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2953 return ret; 2954 } 2955 2956 static int f2fs_get_projid(struct inode *inode, kprojid_t *projid) 2957 { 2958 *projid = F2FS_I(inode)->i_projid; 2959 return 0; 2960 } 2961 2962 static const struct dquot_operations f2fs_quota_operations = { 2963 .get_reserved_space = f2fs_get_reserved_space, 2964 .write_dquot = f2fs_dquot_commit, 2965 .acquire_dquot = f2fs_dquot_acquire, 2966 .release_dquot = f2fs_dquot_release, 2967 .mark_dirty = f2fs_dquot_mark_dquot_dirty, 2968 .write_info = f2fs_dquot_commit_info, 2969 .alloc_dquot = dquot_alloc, 2970 .destroy_dquot = dquot_destroy, 2971 .get_projid = f2fs_get_projid, 2972 .get_next_id = dquot_get_next_id, 2973 }; 2974 2975 static const struct quotactl_ops f2fs_quotactl_ops = { 2976 .quota_on = f2fs_quota_on, 2977 .quota_off = f2fs_quota_off, 2978 .quota_sync = f2fs_quota_sync, 2979 .get_state = dquot_get_state, 2980 .set_info = dquot_set_dqinfo, 2981 .get_dqblk = dquot_get_dqblk, 2982 .set_dqblk = dquot_set_dqblk, 2983 .get_nextdqblk = dquot_get_next_dqblk, 2984 }; 2985 #else 2986 int f2fs_dquot_initialize(struct inode *inode) 2987 { 2988 return 0; 2989 } 2990 2991 int f2fs_quota_sync(struct super_block *sb, int type) 2992 { 2993 return 0; 2994 } 2995 2996 void f2fs_quota_off_umount(struct super_block *sb) 2997 { 2998 } 2999 #endif 3000 3001 static const struct super_operations f2fs_sops = { 3002 .alloc_inode = f2fs_alloc_inode, 3003 .free_inode = f2fs_free_inode, 3004 .drop_inode = f2fs_drop_inode, 3005 .write_inode = f2fs_write_inode, 3006 .dirty_inode = f2fs_dirty_inode, 3007 .show_options = f2fs_show_options, 3008 #ifdef CONFIG_QUOTA 3009 .quota_read = f2fs_quota_read, 3010 .quota_write = f2fs_quota_write, 3011 .get_dquots = f2fs_get_dquots, 3012 #endif 3013 .evict_inode = f2fs_evict_inode, 3014 .put_super = f2fs_put_super, 3015 .sync_fs = f2fs_sync_fs, 3016 .freeze_fs = f2fs_freeze, 3017 .unfreeze_fs = f2fs_unfreeze, 3018 .statfs = f2fs_statfs, 3019 .remount_fs = f2fs_remount, 3020 }; 3021 3022 #ifdef CONFIG_FS_ENCRYPTION 3023 static int f2fs_get_context(struct inode *inode, void *ctx, size_t len) 3024 { 3025 return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION, 3026 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, 3027 ctx, len, NULL); 3028 } 3029 3030 static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len, 3031 void *fs_data) 3032 { 3033 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 3034 3035 /* 3036 * Encrypting the root directory is not allowed because fsck 3037 * expects lost+found directory to exist and remain unencrypted 3038 * if LOST_FOUND feature is enabled. 3039 * 3040 */ 3041 if (f2fs_sb_has_lost_found(sbi) && 3042 inode->i_ino == F2FS_ROOT_INO(sbi)) 3043 return -EPERM; 3044 3045 return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION, 3046 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, 3047 ctx, len, fs_data, XATTR_CREATE); 3048 } 3049 3050 static const union fscrypt_policy *f2fs_get_dummy_policy(struct super_block *sb) 3051 { 3052 return F2FS_OPTION(F2FS_SB(sb)).dummy_enc_policy.policy; 3053 } 3054 3055 static bool f2fs_has_stable_inodes(struct super_block *sb) 3056 { 3057 return true; 3058 } 3059 3060 static void f2fs_get_ino_and_lblk_bits(struct super_block *sb, 3061 int *ino_bits_ret, int *lblk_bits_ret) 3062 { 3063 *ino_bits_ret = 8 * sizeof(nid_t); 3064 *lblk_bits_ret = 8 * sizeof(block_t); 3065 } 3066 3067 static struct block_device **f2fs_get_devices(struct super_block *sb, 3068 unsigned int *num_devs) 3069 { 3070 struct f2fs_sb_info *sbi = F2FS_SB(sb); 3071 struct block_device **devs; 3072 int i; 3073 3074 if (!f2fs_is_multi_device(sbi)) 3075 return NULL; 3076 3077 devs = kmalloc_array(sbi->s_ndevs, sizeof(*devs), GFP_KERNEL); 3078 if (!devs) 3079 return ERR_PTR(-ENOMEM); 3080 3081 for (i = 0; i < sbi->s_ndevs; i++) 3082 devs[i] = FDEV(i).bdev; 3083 *num_devs = sbi->s_ndevs; 3084 return devs; 3085 } 3086 3087 static const struct fscrypt_operations f2fs_cryptops = { 3088 .key_prefix = "f2fs:", 3089 .get_context = f2fs_get_context, 3090 .set_context = f2fs_set_context, 3091 .get_dummy_policy = f2fs_get_dummy_policy, 3092 .empty_dir = f2fs_empty_dir, 3093 .has_stable_inodes = f2fs_has_stable_inodes, 3094 .get_ino_and_lblk_bits = f2fs_get_ino_and_lblk_bits, 3095 .get_devices = f2fs_get_devices, 3096 }; 3097 #endif 3098 3099 static struct inode *f2fs_nfs_get_inode(struct super_block *sb, 3100 u64 ino, u32 generation) 3101 { 3102 struct f2fs_sb_info *sbi = F2FS_SB(sb); 3103 struct inode *inode; 3104 3105 if (f2fs_check_nid_range(sbi, ino)) 3106 return ERR_PTR(-ESTALE); 3107 3108 /* 3109 * f2fs_iget isn't quite right if the inode is currently unallocated! 3110 * However f2fs_iget currently does appropriate checks to handle stale 3111 * inodes so everything is OK. 3112 */ 3113 inode = f2fs_iget(sb, ino); 3114 if (IS_ERR(inode)) 3115 return ERR_CAST(inode); 3116 if (unlikely(generation && inode->i_generation != generation)) { 3117 /* we didn't find the right inode.. */ 3118 iput(inode); 3119 return ERR_PTR(-ESTALE); 3120 } 3121 return inode; 3122 } 3123 3124 static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid, 3125 int fh_len, int fh_type) 3126 { 3127 return generic_fh_to_dentry(sb, fid, fh_len, fh_type, 3128 f2fs_nfs_get_inode); 3129 } 3130 3131 static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid, 3132 int fh_len, int fh_type) 3133 { 3134 return generic_fh_to_parent(sb, fid, fh_len, fh_type, 3135 f2fs_nfs_get_inode); 3136 } 3137 3138 static const struct export_operations f2fs_export_ops = { 3139 .fh_to_dentry = f2fs_fh_to_dentry, 3140 .fh_to_parent = f2fs_fh_to_parent, 3141 .get_parent = f2fs_get_parent, 3142 }; 3143 3144 loff_t max_file_blocks(struct inode *inode) 3145 { 3146 loff_t result = 0; 3147 loff_t leaf_count; 3148 3149 /* 3150 * note: previously, result is equal to (DEF_ADDRS_PER_INODE - 3151 * DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more 3152 * space in inode.i_addr, it will be more safe to reassign 3153 * result as zero. 3154 */ 3155 3156 if (inode && f2fs_compressed_file(inode)) 3157 leaf_count = ADDRS_PER_BLOCK(inode); 3158 else 3159 leaf_count = DEF_ADDRS_PER_BLOCK; 3160 3161 /* two direct node blocks */ 3162 result += (leaf_count * 2); 3163 3164 /* two indirect node blocks */ 3165 leaf_count *= NIDS_PER_BLOCK; 3166 result += (leaf_count * 2); 3167 3168 /* one double indirect node block */ 3169 leaf_count *= NIDS_PER_BLOCK; 3170 result += leaf_count; 3171 3172 return result; 3173 } 3174 3175 static int __f2fs_commit_super(struct buffer_head *bh, 3176 struct f2fs_super_block *super) 3177 { 3178 lock_buffer(bh); 3179 if (super) 3180 memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super)); 3181 set_buffer_dirty(bh); 3182 unlock_buffer(bh); 3183 3184 /* it's rare case, we can do fua all the time */ 3185 return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA); 3186 } 3187 3188 static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi, 3189 struct buffer_head *bh) 3190 { 3191 struct f2fs_super_block *raw_super = (struct f2fs_super_block *) 3192 (bh->b_data + F2FS_SUPER_OFFSET); 3193 struct super_block *sb = sbi->sb; 3194 u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr); 3195 u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr); 3196 u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr); 3197 u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr); 3198 u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr); 3199 u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr); 3200 u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt); 3201 u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit); 3202 u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat); 3203 u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa); 3204 u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main); 3205 u32 segment_count = le32_to_cpu(raw_super->segment_count); 3206 u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); 3207 u64 main_end_blkaddr = main_blkaddr + 3208 (segment_count_main << log_blocks_per_seg); 3209 u64 seg_end_blkaddr = segment0_blkaddr + 3210 (segment_count << log_blocks_per_seg); 3211 3212 if (segment0_blkaddr != cp_blkaddr) { 3213 f2fs_info(sbi, "Mismatch start address, segment0(%u) cp_blkaddr(%u)", 3214 segment0_blkaddr, cp_blkaddr); 3215 return true; 3216 } 3217 3218 if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) != 3219 sit_blkaddr) { 3220 f2fs_info(sbi, "Wrong CP boundary, start(%u) end(%u) blocks(%u)", 3221 cp_blkaddr, sit_blkaddr, 3222 segment_count_ckpt << log_blocks_per_seg); 3223 return true; 3224 } 3225 3226 if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) != 3227 nat_blkaddr) { 3228 f2fs_info(sbi, "Wrong SIT boundary, start(%u) end(%u) blocks(%u)", 3229 sit_blkaddr, nat_blkaddr, 3230 segment_count_sit << log_blocks_per_seg); 3231 return true; 3232 } 3233 3234 if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) != 3235 ssa_blkaddr) { 3236 f2fs_info(sbi, "Wrong NAT boundary, start(%u) end(%u) blocks(%u)", 3237 nat_blkaddr, ssa_blkaddr, 3238 segment_count_nat << log_blocks_per_seg); 3239 return true; 3240 } 3241 3242 if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) != 3243 main_blkaddr) { 3244 f2fs_info(sbi, "Wrong SSA boundary, start(%u) end(%u) blocks(%u)", 3245 ssa_blkaddr, main_blkaddr, 3246 segment_count_ssa << log_blocks_per_seg); 3247 return true; 3248 } 3249 3250 if (main_end_blkaddr > seg_end_blkaddr) { 3251 f2fs_info(sbi, "Wrong MAIN_AREA boundary, start(%u) end(%llu) block(%u)", 3252 main_blkaddr, seg_end_blkaddr, 3253 segment_count_main << log_blocks_per_seg); 3254 return true; 3255 } else if (main_end_blkaddr < seg_end_blkaddr) { 3256 int err = 0; 3257 char *res; 3258 3259 /* fix in-memory information all the time */ 3260 raw_super->segment_count = cpu_to_le32((main_end_blkaddr - 3261 segment0_blkaddr) >> log_blocks_per_seg); 3262 3263 if (f2fs_readonly(sb) || bdev_read_only(sb->s_bdev)) { 3264 set_sbi_flag(sbi, SBI_NEED_SB_WRITE); 3265 res = "internally"; 3266 } else { 3267 err = __f2fs_commit_super(bh, NULL); 3268 res = err ? "failed" : "done"; 3269 } 3270 f2fs_info(sbi, "Fix alignment : %s, start(%u) end(%llu) block(%u)", 3271 res, main_blkaddr, seg_end_blkaddr, 3272 segment_count_main << log_blocks_per_seg); 3273 if (err) 3274 return true; 3275 } 3276 return false; 3277 } 3278 3279 static int sanity_check_raw_super(struct f2fs_sb_info *sbi, 3280 struct buffer_head *bh) 3281 { 3282 block_t segment_count, segs_per_sec, secs_per_zone, segment_count_main; 3283 block_t total_sections, blocks_per_seg; 3284 struct f2fs_super_block *raw_super = (struct f2fs_super_block *) 3285 (bh->b_data + F2FS_SUPER_OFFSET); 3286 size_t crc_offset = 0; 3287 __u32 crc = 0; 3288 3289 if (le32_to_cpu(raw_super->magic) != F2FS_SUPER_MAGIC) { 3290 f2fs_info(sbi, "Magic Mismatch, valid(0x%x) - read(0x%x)", 3291 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic)); 3292 return -EINVAL; 3293 } 3294 3295 /* Check checksum_offset and crc in superblock */ 3296 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_SB_CHKSUM)) { 3297 crc_offset = le32_to_cpu(raw_super->checksum_offset); 3298 if (crc_offset != 3299 offsetof(struct f2fs_super_block, crc)) { 3300 f2fs_info(sbi, "Invalid SB checksum offset: %zu", 3301 crc_offset); 3302 return -EFSCORRUPTED; 3303 } 3304 crc = le32_to_cpu(raw_super->crc); 3305 if (!f2fs_crc_valid(sbi, crc, raw_super, crc_offset)) { 3306 f2fs_info(sbi, "Invalid SB checksum value: %u", crc); 3307 return -EFSCORRUPTED; 3308 } 3309 } 3310 3311 /* Currently, support only 4KB block size */ 3312 if (le32_to_cpu(raw_super->log_blocksize) != F2FS_BLKSIZE_BITS) { 3313 f2fs_info(sbi, "Invalid log_blocksize (%u), supports only %u", 3314 le32_to_cpu(raw_super->log_blocksize), 3315 F2FS_BLKSIZE_BITS); 3316 return -EFSCORRUPTED; 3317 } 3318 3319 /* check log blocks per segment */ 3320 if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) { 3321 f2fs_info(sbi, "Invalid log blocks per segment (%u)", 3322 le32_to_cpu(raw_super->log_blocks_per_seg)); 3323 return -EFSCORRUPTED; 3324 } 3325 3326 /* Currently, support 512/1024/2048/4096 bytes sector size */ 3327 if (le32_to_cpu(raw_super->log_sectorsize) > 3328 F2FS_MAX_LOG_SECTOR_SIZE || 3329 le32_to_cpu(raw_super->log_sectorsize) < 3330 F2FS_MIN_LOG_SECTOR_SIZE) { 3331 f2fs_info(sbi, "Invalid log sectorsize (%u)", 3332 le32_to_cpu(raw_super->log_sectorsize)); 3333 return -EFSCORRUPTED; 3334 } 3335 if (le32_to_cpu(raw_super->log_sectors_per_block) + 3336 le32_to_cpu(raw_super->log_sectorsize) != 3337 F2FS_MAX_LOG_SECTOR_SIZE) { 3338 f2fs_info(sbi, "Invalid log sectors per block(%u) log sectorsize(%u)", 3339 le32_to_cpu(raw_super->log_sectors_per_block), 3340 le32_to_cpu(raw_super->log_sectorsize)); 3341 return -EFSCORRUPTED; 3342 } 3343 3344 segment_count = le32_to_cpu(raw_super->segment_count); 3345 segment_count_main = le32_to_cpu(raw_super->segment_count_main); 3346 segs_per_sec = le32_to_cpu(raw_super->segs_per_sec); 3347 secs_per_zone = le32_to_cpu(raw_super->secs_per_zone); 3348 total_sections = le32_to_cpu(raw_super->section_count); 3349 3350 /* blocks_per_seg should be 512, given the above check */ 3351 blocks_per_seg = 1 << le32_to_cpu(raw_super->log_blocks_per_seg); 3352 3353 if (segment_count > F2FS_MAX_SEGMENT || 3354 segment_count < F2FS_MIN_SEGMENTS) { 3355 f2fs_info(sbi, "Invalid segment count (%u)", segment_count); 3356 return -EFSCORRUPTED; 3357 } 3358 3359 if (total_sections > segment_count_main || total_sections < 1 || 3360 segs_per_sec > segment_count || !segs_per_sec) { 3361 f2fs_info(sbi, "Invalid segment/section count (%u, %u x %u)", 3362 segment_count, total_sections, segs_per_sec); 3363 return -EFSCORRUPTED; 3364 } 3365 3366 if (segment_count_main != total_sections * segs_per_sec) { 3367 f2fs_info(sbi, "Invalid segment/section count (%u != %u * %u)", 3368 segment_count_main, total_sections, segs_per_sec); 3369 return -EFSCORRUPTED; 3370 } 3371 3372 if ((segment_count / segs_per_sec) < total_sections) { 3373 f2fs_info(sbi, "Small segment_count (%u < %u * %u)", 3374 segment_count, segs_per_sec, total_sections); 3375 return -EFSCORRUPTED; 3376 } 3377 3378 if (segment_count > (le64_to_cpu(raw_super->block_count) >> 9)) { 3379 f2fs_info(sbi, "Wrong segment_count / block_count (%u > %llu)", 3380 segment_count, le64_to_cpu(raw_super->block_count)); 3381 return -EFSCORRUPTED; 3382 } 3383 3384 if (RDEV(0).path[0]) { 3385 block_t dev_seg_count = le32_to_cpu(RDEV(0).total_segments); 3386 int i = 1; 3387 3388 while (i < MAX_DEVICES && RDEV(i).path[0]) { 3389 dev_seg_count += le32_to_cpu(RDEV(i).total_segments); 3390 i++; 3391 } 3392 if (segment_count != dev_seg_count) { 3393 f2fs_info(sbi, "Segment count (%u) mismatch with total segments from devices (%u)", 3394 segment_count, dev_seg_count); 3395 return -EFSCORRUPTED; 3396 } 3397 } else { 3398 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_BLKZONED) && 3399 !bdev_is_zoned(sbi->sb->s_bdev)) { 3400 f2fs_info(sbi, "Zoned block device path is missing"); 3401 return -EFSCORRUPTED; 3402 } 3403 } 3404 3405 if (secs_per_zone > total_sections || !secs_per_zone) { 3406 f2fs_info(sbi, "Wrong secs_per_zone / total_sections (%u, %u)", 3407 secs_per_zone, total_sections); 3408 return -EFSCORRUPTED; 3409 } 3410 if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION || 3411 raw_super->hot_ext_count > F2FS_MAX_EXTENSION || 3412 (le32_to_cpu(raw_super->extension_count) + 3413 raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) { 3414 f2fs_info(sbi, "Corrupted extension count (%u + %u > %u)", 3415 le32_to_cpu(raw_super->extension_count), 3416 raw_super->hot_ext_count, 3417 F2FS_MAX_EXTENSION); 3418 return -EFSCORRUPTED; 3419 } 3420 3421 if (le32_to_cpu(raw_super->cp_payload) >= 3422 (blocks_per_seg - F2FS_CP_PACKS - 3423 NR_CURSEG_PERSIST_TYPE)) { 3424 f2fs_info(sbi, "Insane cp_payload (%u >= %u)", 3425 le32_to_cpu(raw_super->cp_payload), 3426 blocks_per_seg - F2FS_CP_PACKS - 3427 NR_CURSEG_PERSIST_TYPE); 3428 return -EFSCORRUPTED; 3429 } 3430 3431 /* check reserved ino info */ 3432 if (le32_to_cpu(raw_super->node_ino) != 1 || 3433 le32_to_cpu(raw_super->meta_ino) != 2 || 3434 le32_to_cpu(raw_super->root_ino) != 3) { 3435 f2fs_info(sbi, "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)", 3436 le32_to_cpu(raw_super->node_ino), 3437 le32_to_cpu(raw_super->meta_ino), 3438 le32_to_cpu(raw_super->root_ino)); 3439 return -EFSCORRUPTED; 3440 } 3441 3442 /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */ 3443 if (sanity_check_area_boundary(sbi, bh)) 3444 return -EFSCORRUPTED; 3445 3446 return 0; 3447 } 3448 3449 int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi) 3450 { 3451 unsigned int total, fsmeta; 3452 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 3453 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 3454 unsigned int ovp_segments, reserved_segments; 3455 unsigned int main_segs, blocks_per_seg; 3456 unsigned int sit_segs, nat_segs; 3457 unsigned int sit_bitmap_size, nat_bitmap_size; 3458 unsigned int log_blocks_per_seg; 3459 unsigned int segment_count_main; 3460 unsigned int cp_pack_start_sum, cp_payload; 3461 block_t user_block_count, valid_user_blocks; 3462 block_t avail_node_count, valid_node_count; 3463 unsigned int nat_blocks, nat_bits_bytes, nat_bits_blocks; 3464 int i, j; 3465 3466 total = le32_to_cpu(raw_super->segment_count); 3467 fsmeta = le32_to_cpu(raw_super->segment_count_ckpt); 3468 sit_segs = le32_to_cpu(raw_super->segment_count_sit); 3469 fsmeta += sit_segs; 3470 nat_segs = le32_to_cpu(raw_super->segment_count_nat); 3471 fsmeta += nat_segs; 3472 fsmeta += le32_to_cpu(ckpt->rsvd_segment_count); 3473 fsmeta += le32_to_cpu(raw_super->segment_count_ssa); 3474 3475 if (unlikely(fsmeta >= total)) 3476 return 1; 3477 3478 ovp_segments = le32_to_cpu(ckpt->overprov_segment_count); 3479 reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count); 3480 3481 if (!f2fs_sb_has_readonly(sbi) && 3482 unlikely(fsmeta < F2FS_MIN_META_SEGMENTS || 3483 ovp_segments == 0 || reserved_segments == 0)) { 3484 f2fs_err(sbi, "Wrong layout: check mkfs.f2fs version"); 3485 return 1; 3486 } 3487 user_block_count = le64_to_cpu(ckpt->user_block_count); 3488 segment_count_main = le32_to_cpu(raw_super->segment_count_main) + 3489 (f2fs_sb_has_readonly(sbi) ? 1 : 0); 3490 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); 3491 if (!user_block_count || user_block_count >= 3492 segment_count_main << log_blocks_per_seg) { 3493 f2fs_err(sbi, "Wrong user_block_count: %u", 3494 user_block_count); 3495 return 1; 3496 } 3497 3498 valid_user_blocks = le64_to_cpu(ckpt->valid_block_count); 3499 if (valid_user_blocks > user_block_count) { 3500 f2fs_err(sbi, "Wrong valid_user_blocks: %u, user_block_count: %u", 3501 valid_user_blocks, user_block_count); 3502 return 1; 3503 } 3504 3505 valid_node_count = le32_to_cpu(ckpt->valid_node_count); 3506 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM; 3507 if (valid_node_count > avail_node_count) { 3508 f2fs_err(sbi, "Wrong valid_node_count: %u, avail_node_count: %u", 3509 valid_node_count, avail_node_count); 3510 return 1; 3511 } 3512 3513 main_segs = le32_to_cpu(raw_super->segment_count_main); 3514 blocks_per_seg = sbi->blocks_per_seg; 3515 3516 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { 3517 if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs || 3518 le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg) 3519 return 1; 3520 3521 if (f2fs_sb_has_readonly(sbi)) 3522 goto check_data; 3523 3524 for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) { 3525 if (le32_to_cpu(ckpt->cur_node_segno[i]) == 3526 le32_to_cpu(ckpt->cur_node_segno[j])) { 3527 f2fs_err(sbi, "Node segment (%u, %u) has the same segno: %u", 3528 i, j, 3529 le32_to_cpu(ckpt->cur_node_segno[i])); 3530 return 1; 3531 } 3532 } 3533 } 3534 check_data: 3535 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) { 3536 if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs || 3537 le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg) 3538 return 1; 3539 3540 if (f2fs_sb_has_readonly(sbi)) 3541 goto skip_cross; 3542 3543 for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) { 3544 if (le32_to_cpu(ckpt->cur_data_segno[i]) == 3545 le32_to_cpu(ckpt->cur_data_segno[j])) { 3546 f2fs_err(sbi, "Data segment (%u, %u) has the same segno: %u", 3547 i, j, 3548 le32_to_cpu(ckpt->cur_data_segno[i])); 3549 return 1; 3550 } 3551 } 3552 } 3553 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { 3554 for (j = 0; j < NR_CURSEG_DATA_TYPE; j++) { 3555 if (le32_to_cpu(ckpt->cur_node_segno[i]) == 3556 le32_to_cpu(ckpt->cur_data_segno[j])) { 3557 f2fs_err(sbi, "Node segment (%u) and Data segment (%u) has the same segno: %u", 3558 i, j, 3559 le32_to_cpu(ckpt->cur_node_segno[i])); 3560 return 1; 3561 } 3562 } 3563 } 3564 skip_cross: 3565 sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize); 3566 nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize); 3567 3568 if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 || 3569 nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) { 3570 f2fs_err(sbi, "Wrong bitmap size: sit: %u, nat:%u", 3571 sit_bitmap_size, nat_bitmap_size); 3572 return 1; 3573 } 3574 3575 cp_pack_start_sum = __start_sum_addr(sbi); 3576 cp_payload = __cp_payload(sbi); 3577 if (cp_pack_start_sum < cp_payload + 1 || 3578 cp_pack_start_sum > blocks_per_seg - 1 - 3579 NR_CURSEG_PERSIST_TYPE) { 3580 f2fs_err(sbi, "Wrong cp_pack_start_sum: %u", 3581 cp_pack_start_sum); 3582 return 1; 3583 } 3584 3585 if (__is_set_ckpt_flags(ckpt, CP_LARGE_NAT_BITMAP_FLAG) && 3586 le32_to_cpu(ckpt->checksum_offset) != CP_MIN_CHKSUM_OFFSET) { 3587 f2fs_warn(sbi, "using deprecated layout of large_nat_bitmap, " 3588 "please run fsck v1.13.0 or higher to repair, chksum_offset: %u, " 3589 "fixed with patch: \"f2fs-tools: relocate chksum_offset for large_nat_bitmap feature\"", 3590 le32_to_cpu(ckpt->checksum_offset)); 3591 return 1; 3592 } 3593 3594 nat_blocks = nat_segs << log_blocks_per_seg; 3595 nat_bits_bytes = nat_blocks / BITS_PER_BYTE; 3596 nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8); 3597 if (__is_set_ckpt_flags(ckpt, CP_NAT_BITS_FLAG) && 3598 (cp_payload + F2FS_CP_PACKS + 3599 NR_CURSEG_PERSIST_TYPE + nat_bits_blocks >= blocks_per_seg)) { 3600 f2fs_warn(sbi, "Insane cp_payload: %u, nat_bits_blocks: %u)", 3601 cp_payload, nat_bits_blocks); 3602 return 1; 3603 } 3604 3605 if (unlikely(f2fs_cp_error(sbi))) { 3606 f2fs_err(sbi, "A bug case: need to run fsck"); 3607 return 1; 3608 } 3609 return 0; 3610 } 3611 3612 static void init_sb_info(struct f2fs_sb_info *sbi) 3613 { 3614 struct f2fs_super_block *raw_super = sbi->raw_super; 3615 int i; 3616 3617 sbi->log_sectors_per_block = 3618 le32_to_cpu(raw_super->log_sectors_per_block); 3619 sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize); 3620 sbi->blocksize = 1 << sbi->log_blocksize; 3621 sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); 3622 sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg; 3623 sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec); 3624 sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone); 3625 sbi->total_sections = le32_to_cpu(raw_super->section_count); 3626 sbi->total_node_count = 3627 (le32_to_cpu(raw_super->segment_count_nat) / 2) 3628 * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK; 3629 F2FS_ROOT_INO(sbi) = le32_to_cpu(raw_super->root_ino); 3630 F2FS_NODE_INO(sbi) = le32_to_cpu(raw_super->node_ino); 3631 F2FS_META_INO(sbi) = le32_to_cpu(raw_super->meta_ino); 3632 sbi->cur_victim_sec = NULL_SECNO; 3633 sbi->gc_mode = GC_NORMAL; 3634 sbi->next_victim_seg[BG_GC] = NULL_SEGNO; 3635 sbi->next_victim_seg[FG_GC] = NULL_SEGNO; 3636 sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH; 3637 sbi->migration_granularity = sbi->segs_per_sec; 3638 sbi->seq_file_ra_mul = MIN_RA_MUL; 3639 sbi->max_fragment_chunk = DEF_FRAGMENT_SIZE; 3640 sbi->max_fragment_hole = DEF_FRAGMENT_SIZE; 3641 spin_lock_init(&sbi->gc_remaining_trials_lock); 3642 atomic64_set(&sbi->current_atomic_write, 0); 3643 3644 sbi->dir_level = DEF_DIR_LEVEL; 3645 sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL; 3646 sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL; 3647 sbi->interval_time[DISCARD_TIME] = DEF_IDLE_INTERVAL; 3648 sbi->interval_time[GC_TIME] = DEF_IDLE_INTERVAL; 3649 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_INTERVAL; 3650 sbi->interval_time[UMOUNT_DISCARD_TIMEOUT] = 3651 DEF_UMOUNT_DISCARD_TIMEOUT; 3652 clear_sbi_flag(sbi, SBI_NEED_FSCK); 3653 3654 for (i = 0; i < NR_COUNT_TYPE; i++) 3655 atomic_set(&sbi->nr_pages[i], 0); 3656 3657 for (i = 0; i < META; i++) 3658 atomic_set(&sbi->wb_sync_req[i], 0); 3659 3660 INIT_LIST_HEAD(&sbi->s_list); 3661 mutex_init(&sbi->umount_mutex); 3662 init_f2fs_rwsem(&sbi->io_order_lock); 3663 spin_lock_init(&sbi->cp_lock); 3664 3665 sbi->dirty_device = 0; 3666 spin_lock_init(&sbi->dev_lock); 3667 3668 init_f2fs_rwsem(&sbi->sb_lock); 3669 init_f2fs_rwsem(&sbi->pin_sem); 3670 } 3671 3672 static int init_percpu_info(struct f2fs_sb_info *sbi) 3673 { 3674 int err; 3675 3676 err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL); 3677 if (err) 3678 return err; 3679 3680 err = percpu_counter_init(&sbi->rf_node_block_count, 0, GFP_KERNEL); 3681 if (err) 3682 goto err_valid_block; 3683 3684 err = percpu_counter_init(&sbi->total_valid_inode_count, 0, 3685 GFP_KERNEL); 3686 if (err) 3687 goto err_node_block; 3688 return 0; 3689 3690 err_node_block: 3691 percpu_counter_destroy(&sbi->rf_node_block_count); 3692 err_valid_block: 3693 percpu_counter_destroy(&sbi->alloc_valid_block_count); 3694 return err; 3695 } 3696 3697 #ifdef CONFIG_BLK_DEV_ZONED 3698 3699 struct f2fs_report_zones_args { 3700 struct f2fs_sb_info *sbi; 3701 struct f2fs_dev_info *dev; 3702 }; 3703 3704 static int f2fs_report_zone_cb(struct blk_zone *zone, unsigned int idx, 3705 void *data) 3706 { 3707 struct f2fs_report_zones_args *rz_args = data; 3708 block_t unusable_blocks = (zone->len - zone->capacity) >> 3709 F2FS_LOG_SECTORS_PER_BLOCK; 3710 3711 if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL) 3712 return 0; 3713 3714 set_bit(idx, rz_args->dev->blkz_seq); 3715 if (!rz_args->sbi->unusable_blocks_per_sec) { 3716 rz_args->sbi->unusable_blocks_per_sec = unusable_blocks; 3717 return 0; 3718 } 3719 if (rz_args->sbi->unusable_blocks_per_sec != unusable_blocks) { 3720 f2fs_err(rz_args->sbi, "F2FS supports single zone capacity\n"); 3721 return -EINVAL; 3722 } 3723 return 0; 3724 } 3725 3726 static int init_blkz_info(struct f2fs_sb_info *sbi, int devi) 3727 { 3728 struct block_device *bdev = FDEV(devi).bdev; 3729 sector_t nr_sectors = bdev_nr_sectors(bdev); 3730 struct f2fs_report_zones_args rep_zone_arg; 3731 u64 zone_sectors; 3732 int ret; 3733 3734 if (!f2fs_sb_has_blkzoned(sbi)) 3735 return 0; 3736 3737 zone_sectors = bdev_zone_sectors(bdev); 3738 if (!is_power_of_2(zone_sectors)) { 3739 f2fs_err(sbi, "F2FS does not support non power of 2 zone sizes\n"); 3740 return -EINVAL; 3741 } 3742 3743 if (sbi->blocks_per_blkz && sbi->blocks_per_blkz != 3744 SECTOR_TO_BLOCK(zone_sectors)) 3745 return -EINVAL; 3746 sbi->blocks_per_blkz = SECTOR_TO_BLOCK(zone_sectors); 3747 if (sbi->log_blocks_per_blkz && sbi->log_blocks_per_blkz != 3748 __ilog2_u32(sbi->blocks_per_blkz)) 3749 return -EINVAL; 3750 sbi->log_blocks_per_blkz = __ilog2_u32(sbi->blocks_per_blkz); 3751 FDEV(devi).nr_blkz = SECTOR_TO_BLOCK(nr_sectors) >> 3752 sbi->log_blocks_per_blkz; 3753 if (nr_sectors & (zone_sectors - 1)) 3754 FDEV(devi).nr_blkz++; 3755 3756 FDEV(devi).blkz_seq = f2fs_kvzalloc(sbi, 3757 BITS_TO_LONGS(FDEV(devi).nr_blkz) 3758 * sizeof(unsigned long), 3759 GFP_KERNEL); 3760 if (!FDEV(devi).blkz_seq) 3761 return -ENOMEM; 3762 3763 rep_zone_arg.sbi = sbi; 3764 rep_zone_arg.dev = &FDEV(devi); 3765 3766 ret = blkdev_report_zones(bdev, 0, BLK_ALL_ZONES, f2fs_report_zone_cb, 3767 &rep_zone_arg); 3768 if (ret < 0) 3769 return ret; 3770 return 0; 3771 } 3772 #endif 3773 3774 /* 3775 * Read f2fs raw super block. 3776 * Because we have two copies of super block, so read both of them 3777 * to get the first valid one. If any one of them is broken, we pass 3778 * them recovery flag back to the caller. 3779 */ 3780 static int read_raw_super_block(struct f2fs_sb_info *sbi, 3781 struct f2fs_super_block **raw_super, 3782 int *valid_super_block, int *recovery) 3783 { 3784 struct super_block *sb = sbi->sb; 3785 int block; 3786 struct buffer_head *bh; 3787 struct f2fs_super_block *super; 3788 int err = 0; 3789 3790 super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL); 3791 if (!super) 3792 return -ENOMEM; 3793 3794 for (block = 0; block < 2; block++) { 3795 bh = sb_bread(sb, block); 3796 if (!bh) { 3797 f2fs_err(sbi, "Unable to read %dth superblock", 3798 block + 1); 3799 err = -EIO; 3800 *recovery = 1; 3801 continue; 3802 } 3803 3804 /* sanity checking of raw super */ 3805 err = sanity_check_raw_super(sbi, bh); 3806 if (err) { 3807 f2fs_err(sbi, "Can't find valid F2FS filesystem in %dth superblock", 3808 block + 1); 3809 brelse(bh); 3810 *recovery = 1; 3811 continue; 3812 } 3813 3814 if (!*raw_super) { 3815 memcpy(super, bh->b_data + F2FS_SUPER_OFFSET, 3816 sizeof(*super)); 3817 *valid_super_block = block; 3818 *raw_super = super; 3819 } 3820 brelse(bh); 3821 } 3822 3823 /* No valid superblock */ 3824 if (!*raw_super) 3825 kfree(super); 3826 else 3827 err = 0; 3828 3829 return err; 3830 } 3831 3832 int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover) 3833 { 3834 struct buffer_head *bh; 3835 __u32 crc = 0; 3836 int err; 3837 3838 if ((recover && f2fs_readonly(sbi->sb)) || 3839 bdev_read_only(sbi->sb->s_bdev)) { 3840 set_sbi_flag(sbi, SBI_NEED_SB_WRITE); 3841 return -EROFS; 3842 } 3843 3844 /* we should update superblock crc here */ 3845 if (!recover && f2fs_sb_has_sb_chksum(sbi)) { 3846 crc = f2fs_crc32(sbi, F2FS_RAW_SUPER(sbi), 3847 offsetof(struct f2fs_super_block, crc)); 3848 F2FS_RAW_SUPER(sbi)->crc = cpu_to_le32(crc); 3849 } 3850 3851 /* write back-up superblock first */ 3852 bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1); 3853 if (!bh) 3854 return -EIO; 3855 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi)); 3856 brelse(bh); 3857 3858 /* if we are in recovery path, skip writing valid superblock */ 3859 if (recover || err) 3860 return err; 3861 3862 /* write current valid superblock */ 3863 bh = sb_bread(sbi->sb, sbi->valid_super_block); 3864 if (!bh) 3865 return -EIO; 3866 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi)); 3867 brelse(bh); 3868 return err; 3869 } 3870 3871 void f2fs_handle_stop(struct f2fs_sb_info *sbi, unsigned char reason) 3872 { 3873 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 3874 int err; 3875 3876 f2fs_down_write(&sbi->sb_lock); 3877 3878 if (raw_super->s_stop_reason[reason] < ((1 << BITS_PER_BYTE) - 1)) 3879 raw_super->s_stop_reason[reason]++; 3880 3881 err = f2fs_commit_super(sbi, false); 3882 if (err) 3883 f2fs_err(sbi, "f2fs_commit_super fails to record reason:%u err:%d", 3884 reason, err); 3885 f2fs_up_write(&sbi->sb_lock); 3886 } 3887 3888 static void f2fs_save_errors(struct f2fs_sb_info *sbi, unsigned char flag) 3889 { 3890 spin_lock(&sbi->error_lock); 3891 if (!test_bit(flag, (unsigned long *)sbi->errors)) { 3892 set_bit(flag, (unsigned long *)sbi->errors); 3893 sbi->error_dirty = true; 3894 } 3895 spin_unlock(&sbi->error_lock); 3896 } 3897 3898 static bool f2fs_update_errors(struct f2fs_sb_info *sbi) 3899 { 3900 bool need_update = false; 3901 3902 spin_lock(&sbi->error_lock); 3903 if (sbi->error_dirty) { 3904 memcpy(F2FS_RAW_SUPER(sbi)->s_errors, sbi->errors, 3905 MAX_F2FS_ERRORS); 3906 sbi->error_dirty = false; 3907 need_update = true; 3908 } 3909 spin_unlock(&sbi->error_lock); 3910 3911 return need_update; 3912 } 3913 3914 void f2fs_handle_error(struct f2fs_sb_info *sbi, unsigned char error) 3915 { 3916 int err; 3917 3918 f2fs_save_errors(sbi, error); 3919 3920 f2fs_down_write(&sbi->sb_lock); 3921 3922 if (!f2fs_update_errors(sbi)) 3923 goto out_unlock; 3924 3925 err = f2fs_commit_super(sbi, false); 3926 if (err) 3927 f2fs_err(sbi, "f2fs_commit_super fails to record errors:%u, err:%d", 3928 error, err); 3929 out_unlock: 3930 f2fs_up_write(&sbi->sb_lock); 3931 } 3932 3933 static int f2fs_scan_devices(struct f2fs_sb_info *sbi) 3934 { 3935 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 3936 unsigned int max_devices = MAX_DEVICES; 3937 unsigned int logical_blksize; 3938 int i; 3939 3940 /* Initialize single device information */ 3941 if (!RDEV(0).path[0]) { 3942 if (!bdev_is_zoned(sbi->sb->s_bdev)) 3943 return 0; 3944 max_devices = 1; 3945 } 3946 3947 /* 3948 * Initialize multiple devices information, or single 3949 * zoned block device information. 3950 */ 3951 sbi->devs = f2fs_kzalloc(sbi, 3952 array_size(max_devices, 3953 sizeof(struct f2fs_dev_info)), 3954 GFP_KERNEL); 3955 if (!sbi->devs) 3956 return -ENOMEM; 3957 3958 logical_blksize = bdev_logical_block_size(sbi->sb->s_bdev); 3959 sbi->aligned_blksize = true; 3960 3961 for (i = 0; i < max_devices; i++) { 3962 3963 if (i > 0 && !RDEV(i).path[0]) 3964 break; 3965 3966 if (max_devices == 1) { 3967 /* Single zoned block device mount */ 3968 FDEV(0).bdev = 3969 blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev, 3970 sbi->sb->s_mode, sbi->sb->s_type); 3971 } else { 3972 /* Multi-device mount */ 3973 memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN); 3974 FDEV(i).total_segments = 3975 le32_to_cpu(RDEV(i).total_segments); 3976 if (i == 0) { 3977 FDEV(i).start_blk = 0; 3978 FDEV(i).end_blk = FDEV(i).start_blk + 3979 (FDEV(i).total_segments << 3980 sbi->log_blocks_per_seg) - 1 + 3981 le32_to_cpu(raw_super->segment0_blkaddr); 3982 } else { 3983 FDEV(i).start_blk = FDEV(i - 1).end_blk + 1; 3984 FDEV(i).end_blk = FDEV(i).start_blk + 3985 (FDEV(i).total_segments << 3986 sbi->log_blocks_per_seg) - 1; 3987 } 3988 FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path, 3989 sbi->sb->s_mode, sbi->sb->s_type); 3990 } 3991 if (IS_ERR(FDEV(i).bdev)) 3992 return PTR_ERR(FDEV(i).bdev); 3993 3994 /* to release errored devices */ 3995 sbi->s_ndevs = i + 1; 3996 3997 if (logical_blksize != bdev_logical_block_size(FDEV(i).bdev)) 3998 sbi->aligned_blksize = false; 3999 4000 #ifdef CONFIG_BLK_DEV_ZONED 4001 if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM && 4002 !f2fs_sb_has_blkzoned(sbi)) { 4003 f2fs_err(sbi, "Zoned block device feature not enabled"); 4004 return -EINVAL; 4005 } 4006 if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) { 4007 if (init_blkz_info(sbi, i)) { 4008 f2fs_err(sbi, "Failed to initialize F2FS blkzone information"); 4009 return -EINVAL; 4010 } 4011 if (max_devices == 1) 4012 break; 4013 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)", 4014 i, FDEV(i).path, 4015 FDEV(i).total_segments, 4016 FDEV(i).start_blk, FDEV(i).end_blk, 4017 bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ? 4018 "Host-aware" : "Host-managed"); 4019 continue; 4020 } 4021 #endif 4022 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x", 4023 i, FDEV(i).path, 4024 FDEV(i).total_segments, 4025 FDEV(i).start_blk, FDEV(i).end_blk); 4026 } 4027 f2fs_info(sbi, 4028 "IO Block Size: %8d KB", F2FS_IO_SIZE_KB(sbi)); 4029 return 0; 4030 } 4031 4032 static int f2fs_setup_casefold(struct f2fs_sb_info *sbi) 4033 { 4034 #if IS_ENABLED(CONFIG_UNICODE) 4035 if (f2fs_sb_has_casefold(sbi) && !sbi->sb->s_encoding) { 4036 const struct f2fs_sb_encodings *encoding_info; 4037 struct unicode_map *encoding; 4038 __u16 encoding_flags; 4039 4040 encoding_info = f2fs_sb_read_encoding(sbi->raw_super); 4041 if (!encoding_info) { 4042 f2fs_err(sbi, 4043 "Encoding requested by superblock is unknown"); 4044 return -EINVAL; 4045 } 4046 4047 encoding_flags = le16_to_cpu(sbi->raw_super->s_encoding_flags); 4048 encoding = utf8_load(encoding_info->version); 4049 if (IS_ERR(encoding)) { 4050 f2fs_err(sbi, 4051 "can't mount with superblock charset: %s-%u.%u.%u " 4052 "not supported by the kernel. flags: 0x%x.", 4053 encoding_info->name, 4054 unicode_major(encoding_info->version), 4055 unicode_minor(encoding_info->version), 4056 unicode_rev(encoding_info->version), 4057 encoding_flags); 4058 return PTR_ERR(encoding); 4059 } 4060 f2fs_info(sbi, "Using encoding defined by superblock: " 4061 "%s-%u.%u.%u with flags 0x%hx", encoding_info->name, 4062 unicode_major(encoding_info->version), 4063 unicode_minor(encoding_info->version), 4064 unicode_rev(encoding_info->version), 4065 encoding_flags); 4066 4067 sbi->sb->s_encoding = encoding; 4068 sbi->sb->s_encoding_flags = encoding_flags; 4069 } 4070 #else 4071 if (f2fs_sb_has_casefold(sbi)) { 4072 f2fs_err(sbi, "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE"); 4073 return -EINVAL; 4074 } 4075 #endif 4076 return 0; 4077 } 4078 4079 static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi) 4080 { 4081 /* adjust parameters according to the volume size */ 4082 if (MAIN_SEGS(sbi) <= SMALL_VOLUME_SEGMENTS) { 4083 if (f2fs_block_unit_discard(sbi)) 4084 SM_I(sbi)->dcc_info->discard_granularity = 4085 MIN_DISCARD_GRANULARITY; 4086 if (!f2fs_lfs_mode(sbi)) 4087 SM_I(sbi)->ipu_policy = BIT(F2FS_IPU_FORCE) | 4088 BIT(F2FS_IPU_HONOR_OPU_WRITE); 4089 } 4090 4091 sbi->readdir_ra = true; 4092 } 4093 4094 static int f2fs_fill_super(struct super_block *sb, void *data, int silent) 4095 { 4096 struct f2fs_sb_info *sbi; 4097 struct f2fs_super_block *raw_super; 4098 struct inode *root; 4099 int err; 4100 bool skip_recovery = false, need_fsck = false; 4101 char *options = NULL; 4102 int recovery, i, valid_super_block; 4103 struct curseg_info *seg_i; 4104 int retry_cnt = 1; 4105 4106 try_onemore: 4107 err = -EINVAL; 4108 raw_super = NULL; 4109 valid_super_block = -1; 4110 recovery = 0; 4111 4112 /* allocate memory for f2fs-specific super block info */ 4113 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL); 4114 if (!sbi) 4115 return -ENOMEM; 4116 4117 sbi->sb = sb; 4118 4119 /* initialize locks within allocated memory */ 4120 init_f2fs_rwsem(&sbi->gc_lock); 4121 mutex_init(&sbi->writepages); 4122 init_f2fs_rwsem(&sbi->cp_global_sem); 4123 init_f2fs_rwsem(&sbi->node_write); 4124 init_f2fs_rwsem(&sbi->node_change); 4125 spin_lock_init(&sbi->stat_lock); 4126 init_f2fs_rwsem(&sbi->cp_rwsem); 4127 init_f2fs_rwsem(&sbi->quota_sem); 4128 init_waitqueue_head(&sbi->cp_wait); 4129 spin_lock_init(&sbi->error_lock); 4130 4131 for (i = 0; i < NR_INODE_TYPE; i++) { 4132 INIT_LIST_HEAD(&sbi->inode_list[i]); 4133 spin_lock_init(&sbi->inode_lock[i]); 4134 } 4135 mutex_init(&sbi->flush_lock); 4136 4137 /* Load the checksum driver */ 4138 sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0); 4139 if (IS_ERR(sbi->s_chksum_driver)) { 4140 f2fs_err(sbi, "Cannot load crc32 driver."); 4141 err = PTR_ERR(sbi->s_chksum_driver); 4142 sbi->s_chksum_driver = NULL; 4143 goto free_sbi; 4144 } 4145 4146 /* set a block size */ 4147 if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) { 4148 f2fs_err(sbi, "unable to set blocksize"); 4149 goto free_sbi; 4150 } 4151 4152 err = read_raw_super_block(sbi, &raw_super, &valid_super_block, 4153 &recovery); 4154 if (err) 4155 goto free_sbi; 4156 4157 sb->s_fs_info = sbi; 4158 sbi->raw_super = raw_super; 4159 4160 memcpy(sbi->errors, raw_super->s_errors, MAX_F2FS_ERRORS); 4161 4162 /* precompute checksum seed for metadata */ 4163 if (f2fs_sb_has_inode_chksum(sbi)) 4164 sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid, 4165 sizeof(raw_super->uuid)); 4166 4167 default_options(sbi); 4168 /* parse mount options */ 4169 options = kstrdup((const char *)data, GFP_KERNEL); 4170 if (data && !options) { 4171 err = -ENOMEM; 4172 goto free_sb_buf; 4173 } 4174 4175 err = parse_options(sb, options, false); 4176 if (err) 4177 goto free_options; 4178 4179 sb->s_maxbytes = max_file_blocks(NULL) << 4180 le32_to_cpu(raw_super->log_blocksize); 4181 sb->s_max_links = F2FS_LINK_MAX; 4182 4183 err = f2fs_setup_casefold(sbi); 4184 if (err) 4185 goto free_options; 4186 4187 #ifdef CONFIG_QUOTA 4188 sb->dq_op = &f2fs_quota_operations; 4189 sb->s_qcop = &f2fs_quotactl_ops; 4190 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ; 4191 4192 if (f2fs_sb_has_quota_ino(sbi)) { 4193 for (i = 0; i < MAXQUOTAS; i++) { 4194 if (f2fs_qf_ino(sbi->sb, i)) 4195 sbi->nquota_files++; 4196 } 4197 } 4198 #endif 4199 4200 sb->s_op = &f2fs_sops; 4201 #ifdef CONFIG_FS_ENCRYPTION 4202 sb->s_cop = &f2fs_cryptops; 4203 #endif 4204 #ifdef CONFIG_FS_VERITY 4205 sb->s_vop = &f2fs_verityops; 4206 #endif 4207 sb->s_xattr = f2fs_xattr_handlers; 4208 sb->s_export_op = &f2fs_export_ops; 4209 sb->s_magic = F2FS_SUPER_MAGIC; 4210 sb->s_time_gran = 1; 4211 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) | 4212 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0); 4213 memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid)); 4214 sb->s_iflags |= SB_I_CGROUPWB; 4215 4216 /* init f2fs-specific super block info */ 4217 sbi->valid_super_block = valid_super_block; 4218 4219 /* disallow all the data/node/meta page writes */ 4220 set_sbi_flag(sbi, SBI_POR_DOING); 4221 4222 err = f2fs_init_write_merge_io(sbi); 4223 if (err) 4224 goto free_bio_info; 4225 4226 init_sb_info(sbi); 4227 4228 err = f2fs_init_iostat(sbi); 4229 if (err) 4230 goto free_bio_info; 4231 4232 err = init_percpu_info(sbi); 4233 if (err) 4234 goto free_iostat; 4235 4236 if (F2FS_IO_ALIGNED(sbi)) { 4237 sbi->write_io_dummy = 4238 mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0); 4239 if (!sbi->write_io_dummy) { 4240 err = -ENOMEM; 4241 goto free_percpu; 4242 } 4243 } 4244 4245 /* init per sbi slab cache */ 4246 err = f2fs_init_xattr_caches(sbi); 4247 if (err) 4248 goto free_io_dummy; 4249 err = f2fs_init_page_array_cache(sbi); 4250 if (err) 4251 goto free_xattr_cache; 4252 4253 /* get an inode for meta space */ 4254 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi)); 4255 if (IS_ERR(sbi->meta_inode)) { 4256 f2fs_err(sbi, "Failed to read F2FS meta data inode"); 4257 err = PTR_ERR(sbi->meta_inode); 4258 goto free_page_array_cache; 4259 } 4260 4261 err = f2fs_get_valid_checkpoint(sbi); 4262 if (err) { 4263 f2fs_err(sbi, "Failed to get valid F2FS checkpoint"); 4264 goto free_meta_inode; 4265 } 4266 4267 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_QUOTA_NEED_FSCK_FLAG)) 4268 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 4269 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_DISABLED_QUICK_FLAG)) { 4270 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK); 4271 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL; 4272 } 4273 4274 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FSCK_FLAG)) 4275 set_sbi_flag(sbi, SBI_NEED_FSCK); 4276 4277 /* Initialize device list */ 4278 err = f2fs_scan_devices(sbi); 4279 if (err) { 4280 f2fs_err(sbi, "Failed to find devices"); 4281 goto free_devices; 4282 } 4283 4284 err = f2fs_init_post_read_wq(sbi); 4285 if (err) { 4286 f2fs_err(sbi, "Failed to initialize post read workqueue"); 4287 goto free_devices; 4288 } 4289 4290 sbi->total_valid_node_count = 4291 le32_to_cpu(sbi->ckpt->valid_node_count); 4292 percpu_counter_set(&sbi->total_valid_inode_count, 4293 le32_to_cpu(sbi->ckpt->valid_inode_count)); 4294 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count); 4295 sbi->total_valid_block_count = 4296 le64_to_cpu(sbi->ckpt->valid_block_count); 4297 sbi->last_valid_block_count = sbi->total_valid_block_count; 4298 sbi->reserved_blocks = 0; 4299 sbi->current_reserved_blocks = 0; 4300 limit_reserve_root(sbi); 4301 adjust_unusable_cap_perc(sbi); 4302 4303 f2fs_init_extent_cache_info(sbi); 4304 4305 f2fs_init_ino_entry_info(sbi); 4306 4307 f2fs_init_fsync_node_info(sbi); 4308 4309 /* setup checkpoint request control and start checkpoint issue thread */ 4310 f2fs_init_ckpt_req_control(sbi); 4311 if (!f2fs_readonly(sb) && !test_opt(sbi, DISABLE_CHECKPOINT) && 4312 test_opt(sbi, MERGE_CHECKPOINT)) { 4313 err = f2fs_start_ckpt_thread(sbi); 4314 if (err) { 4315 f2fs_err(sbi, 4316 "Failed to start F2FS issue_checkpoint_thread (%d)", 4317 err); 4318 goto stop_ckpt_thread; 4319 } 4320 } 4321 4322 /* setup f2fs internal modules */ 4323 err = f2fs_build_segment_manager(sbi); 4324 if (err) { 4325 f2fs_err(sbi, "Failed to initialize F2FS segment manager (%d)", 4326 err); 4327 goto free_sm; 4328 } 4329 err = f2fs_build_node_manager(sbi); 4330 if (err) { 4331 f2fs_err(sbi, "Failed to initialize F2FS node manager (%d)", 4332 err); 4333 goto free_nm; 4334 } 4335 4336 err = adjust_reserved_segment(sbi); 4337 if (err) 4338 goto free_nm; 4339 4340 /* For write statistics */ 4341 sbi->sectors_written_start = f2fs_get_sectors_written(sbi); 4342 4343 /* Read accumulated write IO statistics if exists */ 4344 seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE); 4345 if (__exist_node_summaries(sbi)) 4346 sbi->kbytes_written = 4347 le64_to_cpu(seg_i->journal->info.kbytes_written); 4348 4349 f2fs_build_gc_manager(sbi); 4350 4351 err = f2fs_build_stats(sbi); 4352 if (err) 4353 goto free_nm; 4354 4355 /* get an inode for node space */ 4356 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi)); 4357 if (IS_ERR(sbi->node_inode)) { 4358 f2fs_err(sbi, "Failed to read node inode"); 4359 err = PTR_ERR(sbi->node_inode); 4360 goto free_stats; 4361 } 4362 4363 /* read root inode and dentry */ 4364 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi)); 4365 if (IS_ERR(root)) { 4366 f2fs_err(sbi, "Failed to read root inode"); 4367 err = PTR_ERR(root); 4368 goto free_node_inode; 4369 } 4370 if (!S_ISDIR(root->i_mode) || !root->i_blocks || 4371 !root->i_size || !root->i_nlink) { 4372 iput(root); 4373 err = -EINVAL; 4374 goto free_node_inode; 4375 } 4376 4377 sb->s_root = d_make_root(root); /* allocate root dentry */ 4378 if (!sb->s_root) { 4379 err = -ENOMEM; 4380 goto free_node_inode; 4381 } 4382 4383 err = f2fs_init_compress_inode(sbi); 4384 if (err) 4385 goto free_root_inode; 4386 4387 err = f2fs_register_sysfs(sbi); 4388 if (err) 4389 goto free_compress_inode; 4390 4391 #ifdef CONFIG_QUOTA 4392 /* Enable quota usage during mount */ 4393 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) { 4394 err = f2fs_enable_quotas(sb); 4395 if (err) 4396 f2fs_err(sbi, "Cannot turn on quotas: error %d", err); 4397 } 4398 #endif 4399 /* if there are any orphan inodes, free them */ 4400 err = f2fs_recover_orphan_inodes(sbi); 4401 if (err) 4402 goto free_meta; 4403 4404 if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG))) 4405 goto reset_checkpoint; 4406 4407 /* recover fsynced data */ 4408 if (!test_opt(sbi, DISABLE_ROLL_FORWARD) && 4409 !test_opt(sbi, NORECOVERY)) { 4410 /* 4411 * mount should be failed, when device has readonly mode, and 4412 * previous checkpoint was not done by clean system shutdown. 4413 */ 4414 if (f2fs_hw_is_readonly(sbi)) { 4415 if (!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) { 4416 err = f2fs_recover_fsync_data(sbi, true); 4417 if (err > 0) { 4418 err = -EROFS; 4419 f2fs_err(sbi, "Need to recover fsync data, but " 4420 "write access unavailable, please try " 4421 "mount w/ disable_roll_forward or norecovery"); 4422 } 4423 if (err < 0) 4424 goto free_meta; 4425 } 4426 f2fs_info(sbi, "write access unavailable, skipping recovery"); 4427 goto reset_checkpoint; 4428 } 4429 4430 if (need_fsck) 4431 set_sbi_flag(sbi, SBI_NEED_FSCK); 4432 4433 if (skip_recovery) 4434 goto reset_checkpoint; 4435 4436 err = f2fs_recover_fsync_data(sbi, false); 4437 if (err < 0) { 4438 if (err != -ENOMEM) 4439 skip_recovery = true; 4440 need_fsck = true; 4441 f2fs_err(sbi, "Cannot recover all fsync data errno=%d", 4442 err); 4443 goto free_meta; 4444 } 4445 } else { 4446 err = f2fs_recover_fsync_data(sbi, true); 4447 4448 if (!f2fs_readonly(sb) && err > 0) { 4449 err = -EINVAL; 4450 f2fs_err(sbi, "Need to recover fsync data"); 4451 goto free_meta; 4452 } 4453 } 4454 4455 /* 4456 * If the f2fs is not readonly and fsync data recovery succeeds, 4457 * check zoned block devices' write pointer consistency. 4458 */ 4459 if (!err && !f2fs_readonly(sb) && f2fs_sb_has_blkzoned(sbi)) { 4460 err = f2fs_check_write_pointer(sbi); 4461 if (err) 4462 goto free_meta; 4463 } 4464 4465 reset_checkpoint: 4466 f2fs_init_inmem_curseg(sbi); 4467 4468 /* f2fs_recover_fsync_data() cleared this already */ 4469 clear_sbi_flag(sbi, SBI_POR_DOING); 4470 4471 if (test_opt(sbi, DISABLE_CHECKPOINT)) { 4472 err = f2fs_disable_checkpoint(sbi); 4473 if (err) 4474 goto sync_free_meta; 4475 } else if (is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)) { 4476 f2fs_enable_checkpoint(sbi); 4477 } 4478 4479 /* 4480 * If filesystem is not mounted as read-only then 4481 * do start the gc_thread. 4482 */ 4483 if ((F2FS_OPTION(sbi).bggc_mode != BGGC_MODE_OFF || 4484 test_opt(sbi, GC_MERGE)) && !f2fs_readonly(sb)) { 4485 /* After POR, we can run background GC thread.*/ 4486 err = f2fs_start_gc_thread(sbi); 4487 if (err) 4488 goto sync_free_meta; 4489 } 4490 kvfree(options); 4491 4492 /* recover broken superblock */ 4493 if (recovery) { 4494 err = f2fs_commit_super(sbi, true); 4495 f2fs_info(sbi, "Try to recover %dth superblock, ret: %d", 4496 sbi->valid_super_block ? 1 : 2, err); 4497 } 4498 4499 f2fs_join_shrinker(sbi); 4500 4501 f2fs_tuning_parameters(sbi); 4502 4503 f2fs_notice(sbi, "Mounted with checkpoint version = %llx", 4504 cur_cp_version(F2FS_CKPT(sbi))); 4505 f2fs_update_time(sbi, CP_TIME); 4506 f2fs_update_time(sbi, REQ_TIME); 4507 clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK); 4508 return 0; 4509 4510 sync_free_meta: 4511 /* safe to flush all the data */ 4512 sync_filesystem(sbi->sb); 4513 retry_cnt = 0; 4514 4515 free_meta: 4516 #ifdef CONFIG_QUOTA 4517 f2fs_truncate_quota_inode_pages(sb); 4518 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) 4519 f2fs_quota_off_umount(sbi->sb); 4520 #endif 4521 /* 4522 * Some dirty meta pages can be produced by f2fs_recover_orphan_inodes() 4523 * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg() 4524 * followed by f2fs_write_checkpoint() through f2fs_write_node_pages(), which 4525 * falls into an infinite loop in f2fs_sync_meta_pages(). 4526 */ 4527 truncate_inode_pages_final(META_MAPPING(sbi)); 4528 /* evict some inodes being cached by GC */ 4529 evict_inodes(sb); 4530 f2fs_unregister_sysfs(sbi); 4531 free_compress_inode: 4532 f2fs_destroy_compress_inode(sbi); 4533 free_root_inode: 4534 dput(sb->s_root); 4535 sb->s_root = NULL; 4536 free_node_inode: 4537 f2fs_release_ino_entry(sbi, true); 4538 truncate_inode_pages_final(NODE_MAPPING(sbi)); 4539 iput(sbi->node_inode); 4540 sbi->node_inode = NULL; 4541 free_stats: 4542 f2fs_destroy_stats(sbi); 4543 free_nm: 4544 /* stop discard thread before destroying node manager */ 4545 f2fs_stop_discard_thread(sbi); 4546 f2fs_destroy_node_manager(sbi); 4547 free_sm: 4548 f2fs_destroy_segment_manager(sbi); 4549 stop_ckpt_thread: 4550 f2fs_stop_ckpt_thread(sbi); 4551 f2fs_destroy_post_read_wq(sbi); 4552 free_devices: 4553 destroy_device_list(sbi); 4554 kvfree(sbi->ckpt); 4555 free_meta_inode: 4556 make_bad_inode(sbi->meta_inode); 4557 iput(sbi->meta_inode); 4558 sbi->meta_inode = NULL; 4559 free_page_array_cache: 4560 f2fs_destroy_page_array_cache(sbi); 4561 free_xattr_cache: 4562 f2fs_destroy_xattr_caches(sbi); 4563 free_io_dummy: 4564 mempool_destroy(sbi->write_io_dummy); 4565 free_percpu: 4566 destroy_percpu_info(sbi); 4567 free_iostat: 4568 f2fs_destroy_iostat(sbi); 4569 free_bio_info: 4570 for (i = 0; i < NR_PAGE_TYPE; i++) 4571 kvfree(sbi->write_io[i]); 4572 4573 #if IS_ENABLED(CONFIG_UNICODE) 4574 utf8_unload(sb->s_encoding); 4575 sb->s_encoding = NULL; 4576 #endif 4577 free_options: 4578 #ifdef CONFIG_QUOTA 4579 for (i = 0; i < MAXQUOTAS; i++) 4580 kfree(F2FS_OPTION(sbi).s_qf_names[i]); 4581 #endif 4582 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy); 4583 kvfree(options); 4584 free_sb_buf: 4585 kfree(raw_super); 4586 free_sbi: 4587 if (sbi->s_chksum_driver) 4588 crypto_free_shash(sbi->s_chksum_driver); 4589 kfree(sbi); 4590 4591 /* give only one another chance */ 4592 if (retry_cnt > 0 && skip_recovery) { 4593 retry_cnt--; 4594 shrink_dcache_sb(sb); 4595 goto try_onemore; 4596 } 4597 return err; 4598 } 4599 4600 static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags, 4601 const char *dev_name, void *data) 4602 { 4603 return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super); 4604 } 4605 4606 static void kill_f2fs_super(struct super_block *sb) 4607 { 4608 if (sb->s_root) { 4609 struct f2fs_sb_info *sbi = F2FS_SB(sb); 4610 4611 set_sbi_flag(sbi, SBI_IS_CLOSE); 4612 f2fs_stop_gc_thread(sbi); 4613 f2fs_stop_discard_thread(sbi); 4614 4615 #ifdef CONFIG_F2FS_FS_COMPRESSION 4616 /* 4617 * latter evict_inode() can bypass checking and invalidating 4618 * compress inode cache. 4619 */ 4620 if (test_opt(sbi, COMPRESS_CACHE)) 4621 truncate_inode_pages_final(COMPRESS_MAPPING(sbi)); 4622 #endif 4623 4624 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) || 4625 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) { 4626 struct cp_control cpc = { 4627 .reason = CP_UMOUNT, 4628 }; 4629 f2fs_write_checkpoint(sbi, &cpc); 4630 } 4631 4632 if (is_sbi_flag_set(sbi, SBI_IS_RECOVERED) && f2fs_readonly(sb)) 4633 sb->s_flags &= ~SB_RDONLY; 4634 } 4635 kill_block_super(sb); 4636 } 4637 4638 static struct file_system_type f2fs_fs_type = { 4639 .owner = THIS_MODULE, 4640 .name = "f2fs", 4641 .mount = f2fs_mount, 4642 .kill_sb = kill_f2fs_super, 4643 .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP, 4644 }; 4645 MODULE_ALIAS_FS("f2fs"); 4646 4647 static int __init init_inodecache(void) 4648 { 4649 f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache", 4650 sizeof(struct f2fs_inode_info), 0, 4651 SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL); 4652 return f2fs_inode_cachep ? 0 : -ENOMEM; 4653 } 4654 4655 static void destroy_inodecache(void) 4656 { 4657 /* 4658 * Make sure all delayed rcu free inodes are flushed before we 4659 * destroy cache. 4660 */ 4661 rcu_barrier(); 4662 kmem_cache_destroy(f2fs_inode_cachep); 4663 } 4664 4665 static int __init init_f2fs_fs(void) 4666 { 4667 int err; 4668 4669 if (PAGE_SIZE != F2FS_BLKSIZE) { 4670 printk("F2FS not supported on PAGE_SIZE(%lu) != %d\n", 4671 PAGE_SIZE, F2FS_BLKSIZE); 4672 return -EINVAL; 4673 } 4674 4675 err = init_inodecache(); 4676 if (err) 4677 goto fail; 4678 err = f2fs_create_node_manager_caches(); 4679 if (err) 4680 goto free_inodecache; 4681 err = f2fs_create_segment_manager_caches(); 4682 if (err) 4683 goto free_node_manager_caches; 4684 err = f2fs_create_checkpoint_caches(); 4685 if (err) 4686 goto free_segment_manager_caches; 4687 err = f2fs_create_recovery_cache(); 4688 if (err) 4689 goto free_checkpoint_caches; 4690 err = f2fs_create_extent_cache(); 4691 if (err) 4692 goto free_recovery_cache; 4693 err = f2fs_create_garbage_collection_cache(); 4694 if (err) 4695 goto free_extent_cache; 4696 err = f2fs_init_sysfs(); 4697 if (err) 4698 goto free_garbage_collection_cache; 4699 err = register_shrinker(&f2fs_shrinker_info, "f2fs-shrinker"); 4700 if (err) 4701 goto free_sysfs; 4702 err = register_filesystem(&f2fs_fs_type); 4703 if (err) 4704 goto free_shrinker; 4705 f2fs_create_root_stats(); 4706 err = f2fs_init_post_read_processing(); 4707 if (err) 4708 goto free_root_stats; 4709 err = f2fs_init_iostat_processing(); 4710 if (err) 4711 goto free_post_read; 4712 err = f2fs_init_bio_entry_cache(); 4713 if (err) 4714 goto free_iostat; 4715 err = f2fs_init_bioset(); 4716 if (err) 4717 goto free_bio_entry_cache; 4718 err = f2fs_init_compress_mempool(); 4719 if (err) 4720 goto free_bioset; 4721 err = f2fs_init_compress_cache(); 4722 if (err) 4723 goto free_compress_mempool; 4724 err = f2fs_create_casefold_cache(); 4725 if (err) 4726 goto free_compress_cache; 4727 return 0; 4728 free_compress_cache: 4729 f2fs_destroy_compress_cache(); 4730 free_compress_mempool: 4731 f2fs_destroy_compress_mempool(); 4732 free_bioset: 4733 f2fs_destroy_bioset(); 4734 free_bio_entry_cache: 4735 f2fs_destroy_bio_entry_cache(); 4736 free_iostat: 4737 f2fs_destroy_iostat_processing(); 4738 free_post_read: 4739 f2fs_destroy_post_read_processing(); 4740 free_root_stats: 4741 f2fs_destroy_root_stats(); 4742 unregister_filesystem(&f2fs_fs_type); 4743 free_shrinker: 4744 unregister_shrinker(&f2fs_shrinker_info); 4745 free_sysfs: 4746 f2fs_exit_sysfs(); 4747 free_garbage_collection_cache: 4748 f2fs_destroy_garbage_collection_cache(); 4749 free_extent_cache: 4750 f2fs_destroy_extent_cache(); 4751 free_recovery_cache: 4752 f2fs_destroy_recovery_cache(); 4753 free_checkpoint_caches: 4754 f2fs_destroy_checkpoint_caches(); 4755 free_segment_manager_caches: 4756 f2fs_destroy_segment_manager_caches(); 4757 free_node_manager_caches: 4758 f2fs_destroy_node_manager_caches(); 4759 free_inodecache: 4760 destroy_inodecache(); 4761 fail: 4762 return err; 4763 } 4764 4765 static void __exit exit_f2fs_fs(void) 4766 { 4767 f2fs_destroy_casefold_cache(); 4768 f2fs_destroy_compress_cache(); 4769 f2fs_destroy_compress_mempool(); 4770 f2fs_destroy_bioset(); 4771 f2fs_destroy_bio_entry_cache(); 4772 f2fs_destroy_iostat_processing(); 4773 f2fs_destroy_post_read_processing(); 4774 f2fs_destroy_root_stats(); 4775 unregister_filesystem(&f2fs_fs_type); 4776 unregister_shrinker(&f2fs_shrinker_info); 4777 f2fs_exit_sysfs(); 4778 f2fs_destroy_garbage_collection_cache(); 4779 f2fs_destroy_extent_cache(); 4780 f2fs_destroy_recovery_cache(); 4781 f2fs_destroy_checkpoint_caches(); 4782 f2fs_destroy_segment_manager_caches(); 4783 f2fs_destroy_node_manager_caches(); 4784 destroy_inodecache(); 4785 } 4786 4787 module_init(init_f2fs_fs) 4788 module_exit(exit_f2fs_fs) 4789 4790 MODULE_AUTHOR("Samsung Electronics's Praesto Team"); 4791 MODULE_DESCRIPTION("Flash Friendly File System"); 4792 MODULE_LICENSE("GPL"); 4793 MODULE_SOFTDEP("pre: crc32"); 4794 4795