1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * fs/f2fs/super.c 4 * 5 * Copyright (c) 2012 Samsung Electronics Co., Ltd. 6 * http://www.samsung.com/ 7 */ 8 #include <linux/module.h> 9 #include <linux/init.h> 10 #include <linux/fs.h> 11 #include <linux/fs_context.h> 12 #include <linux/sched/mm.h> 13 #include <linux/statfs.h> 14 #include <linux/buffer_head.h> 15 #include <linux/kthread.h> 16 #include <linux/parser.h> 17 #include <linux/mount.h> 18 #include <linux/seq_file.h> 19 #include <linux/proc_fs.h> 20 #include <linux/random.h> 21 #include <linux/exportfs.h> 22 #include <linux/blkdev.h> 23 #include <linux/quotaops.h> 24 #include <linux/f2fs_fs.h> 25 #include <linux/sysfs.h> 26 #include <linux/quota.h> 27 #include <linux/unicode.h> 28 #include <linux/part_stat.h> 29 #include <linux/zstd.h> 30 #include <linux/lz4.h> 31 32 #include "f2fs.h" 33 #include "node.h" 34 #include "segment.h" 35 #include "xattr.h" 36 #include "gc.h" 37 #include "iostat.h" 38 39 #define CREATE_TRACE_POINTS 40 #include <trace/events/f2fs.h> 41 42 static struct kmem_cache *f2fs_inode_cachep; 43 44 #ifdef CONFIG_F2FS_FAULT_INJECTION 45 46 const char *f2fs_fault_name[FAULT_MAX] = { 47 [FAULT_KMALLOC] = "kmalloc", 48 [FAULT_KVMALLOC] = "kvmalloc", 49 [FAULT_PAGE_ALLOC] = "page alloc", 50 [FAULT_PAGE_GET] = "page get", 51 [FAULT_ALLOC_NID] = "alloc nid", 52 [FAULT_ORPHAN] = "orphan", 53 [FAULT_BLOCK] = "no more block", 54 [FAULT_DIR_DEPTH] = "too big dir depth", 55 [FAULT_EVICT_INODE] = "evict_inode fail", 56 [FAULT_TRUNCATE] = "truncate fail", 57 [FAULT_READ_IO] = "read IO error", 58 [FAULT_CHECKPOINT] = "checkpoint error", 59 [FAULT_DISCARD] = "discard error", 60 [FAULT_WRITE_IO] = "write IO error", 61 [FAULT_SLAB_ALLOC] = "slab alloc", 62 [FAULT_DQUOT_INIT] = "dquot initialize", 63 [FAULT_LOCK_OP] = "lock_op", 64 [FAULT_BLKADDR] = "invalid blkaddr", 65 }; 66 67 void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate, 68 unsigned int type) 69 { 70 struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info; 71 72 if (rate) { 73 atomic_set(&ffi->inject_ops, 0); 74 ffi->inject_rate = rate; 75 } 76 77 if (type) 78 ffi->inject_type = type; 79 80 if (!rate && !type) 81 memset(ffi, 0, sizeof(struct f2fs_fault_info)); 82 } 83 #endif 84 85 /* f2fs-wide shrinker description */ 86 static struct shrinker f2fs_shrinker_info = { 87 .scan_objects = f2fs_shrink_scan, 88 .count_objects = f2fs_shrink_count, 89 .seeks = DEFAULT_SEEKS, 90 }; 91 92 enum { 93 Opt_gc_background, 94 Opt_disable_roll_forward, 95 Opt_norecovery, 96 Opt_discard, 97 Opt_nodiscard, 98 Opt_noheap, 99 Opt_heap, 100 Opt_user_xattr, 101 Opt_nouser_xattr, 102 Opt_acl, 103 Opt_noacl, 104 Opt_active_logs, 105 Opt_disable_ext_identify, 106 Opt_inline_xattr, 107 Opt_noinline_xattr, 108 Opt_inline_xattr_size, 109 Opt_inline_data, 110 Opt_inline_dentry, 111 Opt_noinline_dentry, 112 Opt_flush_merge, 113 Opt_noflush_merge, 114 Opt_barrier, 115 Opt_nobarrier, 116 Opt_fastboot, 117 Opt_extent_cache, 118 Opt_noextent_cache, 119 Opt_noinline_data, 120 Opt_data_flush, 121 Opt_reserve_root, 122 Opt_resgid, 123 Opt_resuid, 124 Opt_mode, 125 Opt_io_size_bits, 126 Opt_fault_injection, 127 Opt_fault_type, 128 Opt_lazytime, 129 Opt_nolazytime, 130 Opt_quota, 131 Opt_noquota, 132 Opt_usrquota, 133 Opt_grpquota, 134 Opt_prjquota, 135 Opt_usrjquota, 136 Opt_grpjquota, 137 Opt_prjjquota, 138 Opt_offusrjquota, 139 Opt_offgrpjquota, 140 Opt_offprjjquota, 141 Opt_jqfmt_vfsold, 142 Opt_jqfmt_vfsv0, 143 Opt_jqfmt_vfsv1, 144 Opt_alloc, 145 Opt_fsync, 146 Opt_test_dummy_encryption, 147 Opt_inlinecrypt, 148 Opt_checkpoint_disable, 149 Opt_checkpoint_disable_cap, 150 Opt_checkpoint_disable_cap_perc, 151 Opt_checkpoint_enable, 152 Opt_checkpoint_merge, 153 Opt_nocheckpoint_merge, 154 Opt_compress_algorithm, 155 Opt_compress_log_size, 156 Opt_compress_extension, 157 Opt_nocompress_extension, 158 Opt_compress_chksum, 159 Opt_compress_mode, 160 Opt_compress_cache, 161 Opt_atgc, 162 Opt_gc_merge, 163 Opt_nogc_merge, 164 Opt_discard_unit, 165 Opt_memory_mode, 166 Opt_age_extent_cache, 167 Opt_err, 168 }; 169 170 static match_table_t f2fs_tokens = { 171 {Opt_gc_background, "background_gc=%s"}, 172 {Opt_disable_roll_forward, "disable_roll_forward"}, 173 {Opt_norecovery, "norecovery"}, 174 {Opt_discard, "discard"}, 175 {Opt_nodiscard, "nodiscard"}, 176 {Opt_noheap, "no_heap"}, 177 {Opt_heap, "heap"}, 178 {Opt_user_xattr, "user_xattr"}, 179 {Opt_nouser_xattr, "nouser_xattr"}, 180 {Opt_acl, "acl"}, 181 {Opt_noacl, "noacl"}, 182 {Opt_active_logs, "active_logs=%u"}, 183 {Opt_disable_ext_identify, "disable_ext_identify"}, 184 {Opt_inline_xattr, "inline_xattr"}, 185 {Opt_noinline_xattr, "noinline_xattr"}, 186 {Opt_inline_xattr_size, "inline_xattr_size=%u"}, 187 {Opt_inline_data, "inline_data"}, 188 {Opt_inline_dentry, "inline_dentry"}, 189 {Opt_noinline_dentry, "noinline_dentry"}, 190 {Opt_flush_merge, "flush_merge"}, 191 {Opt_noflush_merge, "noflush_merge"}, 192 {Opt_barrier, "barrier"}, 193 {Opt_nobarrier, "nobarrier"}, 194 {Opt_fastboot, "fastboot"}, 195 {Opt_extent_cache, "extent_cache"}, 196 {Opt_noextent_cache, "noextent_cache"}, 197 {Opt_noinline_data, "noinline_data"}, 198 {Opt_data_flush, "data_flush"}, 199 {Opt_reserve_root, "reserve_root=%u"}, 200 {Opt_resgid, "resgid=%u"}, 201 {Opt_resuid, "resuid=%u"}, 202 {Opt_mode, "mode=%s"}, 203 {Opt_io_size_bits, "io_bits=%u"}, 204 {Opt_fault_injection, "fault_injection=%u"}, 205 {Opt_fault_type, "fault_type=%u"}, 206 {Opt_lazytime, "lazytime"}, 207 {Opt_nolazytime, "nolazytime"}, 208 {Opt_quota, "quota"}, 209 {Opt_noquota, "noquota"}, 210 {Opt_usrquota, "usrquota"}, 211 {Opt_grpquota, "grpquota"}, 212 {Opt_prjquota, "prjquota"}, 213 {Opt_usrjquota, "usrjquota=%s"}, 214 {Opt_grpjquota, "grpjquota=%s"}, 215 {Opt_prjjquota, "prjjquota=%s"}, 216 {Opt_offusrjquota, "usrjquota="}, 217 {Opt_offgrpjquota, "grpjquota="}, 218 {Opt_offprjjquota, "prjjquota="}, 219 {Opt_jqfmt_vfsold, "jqfmt=vfsold"}, 220 {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"}, 221 {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"}, 222 {Opt_alloc, "alloc_mode=%s"}, 223 {Opt_fsync, "fsync_mode=%s"}, 224 {Opt_test_dummy_encryption, "test_dummy_encryption=%s"}, 225 {Opt_test_dummy_encryption, "test_dummy_encryption"}, 226 {Opt_inlinecrypt, "inlinecrypt"}, 227 {Opt_checkpoint_disable, "checkpoint=disable"}, 228 {Opt_checkpoint_disable_cap, "checkpoint=disable:%u"}, 229 {Opt_checkpoint_disable_cap_perc, "checkpoint=disable:%u%%"}, 230 {Opt_checkpoint_enable, "checkpoint=enable"}, 231 {Opt_checkpoint_merge, "checkpoint_merge"}, 232 {Opt_nocheckpoint_merge, "nocheckpoint_merge"}, 233 {Opt_compress_algorithm, "compress_algorithm=%s"}, 234 {Opt_compress_log_size, "compress_log_size=%u"}, 235 {Opt_compress_extension, "compress_extension=%s"}, 236 {Opt_nocompress_extension, "nocompress_extension=%s"}, 237 {Opt_compress_chksum, "compress_chksum"}, 238 {Opt_compress_mode, "compress_mode=%s"}, 239 {Opt_compress_cache, "compress_cache"}, 240 {Opt_atgc, "atgc"}, 241 {Opt_gc_merge, "gc_merge"}, 242 {Opt_nogc_merge, "nogc_merge"}, 243 {Opt_discard_unit, "discard_unit=%s"}, 244 {Opt_memory_mode, "memory=%s"}, 245 {Opt_age_extent_cache, "age_extent_cache"}, 246 {Opt_err, NULL}, 247 }; 248 249 void f2fs_printk(struct f2fs_sb_info *sbi, const char *fmt, ...) 250 { 251 struct va_format vaf; 252 va_list args; 253 int level; 254 255 va_start(args, fmt); 256 257 level = printk_get_level(fmt); 258 vaf.fmt = printk_skip_level(fmt); 259 vaf.va = &args; 260 printk("%c%cF2FS-fs (%s): %pV\n", 261 KERN_SOH_ASCII, level, sbi->sb->s_id, &vaf); 262 263 va_end(args); 264 } 265 266 #if IS_ENABLED(CONFIG_UNICODE) 267 static const struct f2fs_sb_encodings { 268 __u16 magic; 269 char *name; 270 unsigned int version; 271 } f2fs_sb_encoding_map[] = { 272 {F2FS_ENC_UTF8_12_1, "utf8", UNICODE_AGE(12, 1, 0)}, 273 }; 274 275 static const struct f2fs_sb_encodings * 276 f2fs_sb_read_encoding(const struct f2fs_super_block *sb) 277 { 278 __u16 magic = le16_to_cpu(sb->s_encoding); 279 int i; 280 281 for (i = 0; i < ARRAY_SIZE(f2fs_sb_encoding_map); i++) 282 if (magic == f2fs_sb_encoding_map[i].magic) 283 return &f2fs_sb_encoding_map[i]; 284 285 return NULL; 286 } 287 288 struct kmem_cache *f2fs_cf_name_slab; 289 static int __init f2fs_create_casefold_cache(void) 290 { 291 f2fs_cf_name_slab = f2fs_kmem_cache_create("f2fs_casefolded_name", 292 F2FS_NAME_LEN); 293 return f2fs_cf_name_slab ? 0 : -ENOMEM; 294 } 295 296 static void f2fs_destroy_casefold_cache(void) 297 { 298 kmem_cache_destroy(f2fs_cf_name_slab); 299 } 300 #else 301 static int __init f2fs_create_casefold_cache(void) { return 0; } 302 static void f2fs_destroy_casefold_cache(void) { } 303 #endif 304 305 static inline void limit_reserve_root(struct f2fs_sb_info *sbi) 306 { 307 block_t limit = min((sbi->user_block_count >> 3), 308 sbi->user_block_count - sbi->reserved_blocks); 309 310 /* limit is 12.5% */ 311 if (test_opt(sbi, RESERVE_ROOT) && 312 F2FS_OPTION(sbi).root_reserved_blocks > limit) { 313 F2FS_OPTION(sbi).root_reserved_blocks = limit; 314 f2fs_info(sbi, "Reduce reserved blocks for root = %u", 315 F2FS_OPTION(sbi).root_reserved_blocks); 316 } 317 if (!test_opt(sbi, RESERVE_ROOT) && 318 (!uid_eq(F2FS_OPTION(sbi).s_resuid, 319 make_kuid(&init_user_ns, F2FS_DEF_RESUID)) || 320 !gid_eq(F2FS_OPTION(sbi).s_resgid, 321 make_kgid(&init_user_ns, F2FS_DEF_RESGID)))) 322 f2fs_info(sbi, "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root", 323 from_kuid_munged(&init_user_ns, 324 F2FS_OPTION(sbi).s_resuid), 325 from_kgid_munged(&init_user_ns, 326 F2FS_OPTION(sbi).s_resgid)); 327 } 328 329 static inline int adjust_reserved_segment(struct f2fs_sb_info *sbi) 330 { 331 unsigned int sec_blks = sbi->blocks_per_seg * sbi->segs_per_sec; 332 unsigned int avg_vblocks; 333 unsigned int wanted_reserved_segments; 334 block_t avail_user_block_count; 335 336 if (!F2FS_IO_ALIGNED(sbi)) 337 return 0; 338 339 /* average valid block count in section in worst case */ 340 avg_vblocks = sec_blks / F2FS_IO_SIZE(sbi); 341 342 /* 343 * we need enough free space when migrating one section in worst case 344 */ 345 wanted_reserved_segments = (F2FS_IO_SIZE(sbi) / avg_vblocks) * 346 reserved_segments(sbi); 347 wanted_reserved_segments -= reserved_segments(sbi); 348 349 avail_user_block_count = sbi->user_block_count - 350 sbi->current_reserved_blocks - 351 F2FS_OPTION(sbi).root_reserved_blocks; 352 353 if (wanted_reserved_segments * sbi->blocks_per_seg > 354 avail_user_block_count) { 355 f2fs_err(sbi, "IO align feature can't grab additional reserved segment: %u, available segments: %u", 356 wanted_reserved_segments, 357 avail_user_block_count >> sbi->log_blocks_per_seg); 358 return -ENOSPC; 359 } 360 361 SM_I(sbi)->additional_reserved_segments = wanted_reserved_segments; 362 363 f2fs_info(sbi, "IO align feature needs additional reserved segment: %u", 364 wanted_reserved_segments); 365 366 return 0; 367 } 368 369 static inline void adjust_unusable_cap_perc(struct f2fs_sb_info *sbi) 370 { 371 if (!F2FS_OPTION(sbi).unusable_cap_perc) 372 return; 373 374 if (F2FS_OPTION(sbi).unusable_cap_perc == 100) 375 F2FS_OPTION(sbi).unusable_cap = sbi->user_block_count; 376 else 377 F2FS_OPTION(sbi).unusable_cap = (sbi->user_block_count / 100) * 378 F2FS_OPTION(sbi).unusable_cap_perc; 379 380 f2fs_info(sbi, "Adjust unusable cap for checkpoint=disable = %u / %u%%", 381 F2FS_OPTION(sbi).unusable_cap, 382 F2FS_OPTION(sbi).unusable_cap_perc); 383 } 384 385 static void init_once(void *foo) 386 { 387 struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo; 388 389 inode_init_once(&fi->vfs_inode); 390 } 391 392 #ifdef CONFIG_QUOTA 393 static const char * const quotatypes[] = INITQFNAMES; 394 #define QTYPE2NAME(t) (quotatypes[t]) 395 static int f2fs_set_qf_name(struct super_block *sb, int qtype, 396 substring_t *args) 397 { 398 struct f2fs_sb_info *sbi = F2FS_SB(sb); 399 char *qname; 400 int ret = -EINVAL; 401 402 if (sb_any_quota_loaded(sb) && !F2FS_OPTION(sbi).s_qf_names[qtype]) { 403 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on"); 404 return -EINVAL; 405 } 406 if (f2fs_sb_has_quota_ino(sbi)) { 407 f2fs_info(sbi, "QUOTA feature is enabled, so ignore qf_name"); 408 return 0; 409 } 410 411 qname = match_strdup(args); 412 if (!qname) { 413 f2fs_err(sbi, "Not enough memory for storing quotafile name"); 414 return -ENOMEM; 415 } 416 if (F2FS_OPTION(sbi).s_qf_names[qtype]) { 417 if (strcmp(F2FS_OPTION(sbi).s_qf_names[qtype], qname) == 0) 418 ret = 0; 419 else 420 f2fs_err(sbi, "%s quota file already specified", 421 QTYPE2NAME(qtype)); 422 goto errout; 423 } 424 if (strchr(qname, '/')) { 425 f2fs_err(sbi, "quotafile must be on filesystem root"); 426 goto errout; 427 } 428 F2FS_OPTION(sbi).s_qf_names[qtype] = qname; 429 set_opt(sbi, QUOTA); 430 return 0; 431 errout: 432 kfree(qname); 433 return ret; 434 } 435 436 static int f2fs_clear_qf_name(struct super_block *sb, int qtype) 437 { 438 struct f2fs_sb_info *sbi = F2FS_SB(sb); 439 440 if (sb_any_quota_loaded(sb) && F2FS_OPTION(sbi).s_qf_names[qtype]) { 441 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on"); 442 return -EINVAL; 443 } 444 kfree(F2FS_OPTION(sbi).s_qf_names[qtype]); 445 F2FS_OPTION(sbi).s_qf_names[qtype] = NULL; 446 return 0; 447 } 448 449 static int f2fs_check_quota_options(struct f2fs_sb_info *sbi) 450 { 451 /* 452 * We do the test below only for project quotas. 'usrquota' and 453 * 'grpquota' mount options are allowed even without quota feature 454 * to support legacy quotas in quota files. 455 */ 456 if (test_opt(sbi, PRJQUOTA) && !f2fs_sb_has_project_quota(sbi)) { 457 f2fs_err(sbi, "Project quota feature not enabled. Cannot enable project quota enforcement."); 458 return -1; 459 } 460 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] || 461 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] || 462 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) { 463 if (test_opt(sbi, USRQUOTA) && 464 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]) 465 clear_opt(sbi, USRQUOTA); 466 467 if (test_opt(sbi, GRPQUOTA) && 468 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]) 469 clear_opt(sbi, GRPQUOTA); 470 471 if (test_opt(sbi, PRJQUOTA) && 472 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) 473 clear_opt(sbi, PRJQUOTA); 474 475 if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) || 476 test_opt(sbi, PRJQUOTA)) { 477 f2fs_err(sbi, "old and new quota format mixing"); 478 return -1; 479 } 480 481 if (!F2FS_OPTION(sbi).s_jquota_fmt) { 482 f2fs_err(sbi, "journaled quota format not specified"); 483 return -1; 484 } 485 } 486 487 if (f2fs_sb_has_quota_ino(sbi) && F2FS_OPTION(sbi).s_jquota_fmt) { 488 f2fs_info(sbi, "QUOTA feature is enabled, so ignore jquota_fmt"); 489 F2FS_OPTION(sbi).s_jquota_fmt = 0; 490 } 491 return 0; 492 } 493 #endif 494 495 static int f2fs_set_test_dummy_encryption(struct super_block *sb, 496 const char *opt, 497 const substring_t *arg, 498 bool is_remount) 499 { 500 struct f2fs_sb_info *sbi = F2FS_SB(sb); 501 struct fs_parameter param = { 502 .type = fs_value_is_string, 503 .string = arg->from ? arg->from : "", 504 }; 505 struct fscrypt_dummy_policy *policy = 506 &F2FS_OPTION(sbi).dummy_enc_policy; 507 int err; 508 509 if (!IS_ENABLED(CONFIG_FS_ENCRYPTION)) { 510 f2fs_warn(sbi, "test_dummy_encryption option not supported"); 511 return -EINVAL; 512 } 513 514 if (!f2fs_sb_has_encrypt(sbi)) { 515 f2fs_err(sbi, "Encrypt feature is off"); 516 return -EINVAL; 517 } 518 519 /* 520 * This mount option is just for testing, and it's not worthwhile to 521 * implement the extra complexity (e.g. RCU protection) that would be 522 * needed to allow it to be set or changed during remount. We do allow 523 * it to be specified during remount, but only if there is no change. 524 */ 525 if (is_remount && !fscrypt_is_dummy_policy_set(policy)) { 526 f2fs_warn(sbi, "Can't set test_dummy_encryption on remount"); 527 return -EINVAL; 528 } 529 530 err = fscrypt_parse_test_dummy_encryption(¶m, policy); 531 if (err) { 532 if (err == -EEXIST) 533 f2fs_warn(sbi, 534 "Can't change test_dummy_encryption on remount"); 535 else if (err == -EINVAL) 536 f2fs_warn(sbi, "Value of option \"%s\" is unrecognized", 537 opt); 538 else 539 f2fs_warn(sbi, "Error processing option \"%s\" [%d]", 540 opt, err); 541 return -EINVAL; 542 } 543 err = fscrypt_add_test_dummy_key(sb, policy); 544 if (err) { 545 f2fs_warn(sbi, "Error adding test dummy encryption key [%d]", 546 err); 547 return err; 548 } 549 f2fs_warn(sbi, "Test dummy encryption mode enabled"); 550 return 0; 551 } 552 553 #ifdef CONFIG_F2FS_FS_COMPRESSION 554 /* 555 * 1. The same extension name cannot not appear in both compress and non-compress extension 556 * at the same time. 557 * 2. If the compress extension specifies all files, the types specified by the non-compress 558 * extension will be treated as special cases and will not be compressed. 559 * 3. Don't allow the non-compress extension specifies all files. 560 */ 561 static int f2fs_test_compress_extension(struct f2fs_sb_info *sbi) 562 { 563 unsigned char (*ext)[F2FS_EXTENSION_LEN]; 564 unsigned char (*noext)[F2FS_EXTENSION_LEN]; 565 int ext_cnt, noext_cnt, index = 0, no_index = 0; 566 567 ext = F2FS_OPTION(sbi).extensions; 568 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt; 569 noext = F2FS_OPTION(sbi).noextensions; 570 noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt; 571 572 if (!noext_cnt) 573 return 0; 574 575 for (no_index = 0; no_index < noext_cnt; no_index++) { 576 if (!strcasecmp("*", noext[no_index])) { 577 f2fs_info(sbi, "Don't allow the nocompress extension specifies all files"); 578 return -EINVAL; 579 } 580 for (index = 0; index < ext_cnt; index++) { 581 if (!strcasecmp(ext[index], noext[no_index])) { 582 f2fs_info(sbi, "Don't allow the same extension %s appear in both compress and nocompress extension", 583 ext[index]); 584 return -EINVAL; 585 } 586 } 587 } 588 return 0; 589 } 590 591 #ifdef CONFIG_F2FS_FS_LZ4 592 static int f2fs_set_lz4hc_level(struct f2fs_sb_info *sbi, const char *str) 593 { 594 #ifdef CONFIG_F2FS_FS_LZ4HC 595 unsigned int level; 596 #endif 597 598 if (strlen(str) == 3) { 599 F2FS_OPTION(sbi).compress_level = 0; 600 return 0; 601 } 602 603 #ifdef CONFIG_F2FS_FS_LZ4HC 604 str += 3; 605 606 if (str[0] != ':') { 607 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>"); 608 return -EINVAL; 609 } 610 if (kstrtouint(str + 1, 10, &level)) 611 return -EINVAL; 612 613 if (level < LZ4HC_MIN_CLEVEL || level > LZ4HC_MAX_CLEVEL) { 614 f2fs_info(sbi, "invalid lz4hc compress level: %d", level); 615 return -EINVAL; 616 } 617 618 F2FS_OPTION(sbi).compress_level = level; 619 return 0; 620 #else 621 f2fs_info(sbi, "kernel doesn't support lz4hc compression"); 622 return -EINVAL; 623 #endif 624 } 625 #endif 626 627 #ifdef CONFIG_F2FS_FS_ZSTD 628 static int f2fs_set_zstd_level(struct f2fs_sb_info *sbi, const char *str) 629 { 630 unsigned int level; 631 int len = 4; 632 633 if (strlen(str) == len) { 634 F2FS_OPTION(sbi).compress_level = 0; 635 return 0; 636 } 637 638 str += len; 639 640 if (str[0] != ':') { 641 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>"); 642 return -EINVAL; 643 } 644 if (kstrtouint(str + 1, 10, &level)) 645 return -EINVAL; 646 647 if (!level || level > zstd_max_clevel()) { 648 f2fs_info(sbi, "invalid zstd compress level: %d", level); 649 return -EINVAL; 650 } 651 652 F2FS_OPTION(sbi).compress_level = level; 653 return 0; 654 } 655 #endif 656 #endif 657 658 static int parse_options(struct super_block *sb, char *options, bool is_remount) 659 { 660 struct f2fs_sb_info *sbi = F2FS_SB(sb); 661 substring_t args[MAX_OPT_ARGS]; 662 #ifdef CONFIG_F2FS_FS_COMPRESSION 663 unsigned char (*ext)[F2FS_EXTENSION_LEN]; 664 unsigned char (*noext)[F2FS_EXTENSION_LEN]; 665 int ext_cnt, noext_cnt; 666 #endif 667 char *p, *name; 668 int arg = 0; 669 kuid_t uid; 670 kgid_t gid; 671 int ret; 672 673 if (!options) 674 goto default_check; 675 676 while ((p = strsep(&options, ",")) != NULL) { 677 int token; 678 679 if (!*p) 680 continue; 681 /* 682 * Initialize args struct so we know whether arg was 683 * found; some options take optional arguments. 684 */ 685 args[0].to = args[0].from = NULL; 686 token = match_token(p, f2fs_tokens, args); 687 688 switch (token) { 689 case Opt_gc_background: 690 name = match_strdup(&args[0]); 691 692 if (!name) 693 return -ENOMEM; 694 if (!strcmp(name, "on")) { 695 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON; 696 } else if (!strcmp(name, "off")) { 697 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_OFF; 698 } else if (!strcmp(name, "sync")) { 699 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_SYNC; 700 } else { 701 kfree(name); 702 return -EINVAL; 703 } 704 kfree(name); 705 break; 706 case Opt_disable_roll_forward: 707 set_opt(sbi, DISABLE_ROLL_FORWARD); 708 break; 709 case Opt_norecovery: 710 /* this option mounts f2fs with ro */ 711 set_opt(sbi, NORECOVERY); 712 if (!f2fs_readonly(sb)) 713 return -EINVAL; 714 break; 715 case Opt_discard: 716 if (!f2fs_hw_support_discard(sbi)) { 717 f2fs_warn(sbi, "device does not support discard"); 718 break; 719 } 720 set_opt(sbi, DISCARD); 721 break; 722 case Opt_nodiscard: 723 if (f2fs_hw_should_discard(sbi)) { 724 f2fs_warn(sbi, "discard is required for zoned block devices"); 725 return -EINVAL; 726 } 727 clear_opt(sbi, DISCARD); 728 break; 729 case Opt_noheap: 730 set_opt(sbi, NOHEAP); 731 break; 732 case Opt_heap: 733 clear_opt(sbi, NOHEAP); 734 break; 735 #ifdef CONFIG_F2FS_FS_XATTR 736 case Opt_user_xattr: 737 set_opt(sbi, XATTR_USER); 738 break; 739 case Opt_nouser_xattr: 740 clear_opt(sbi, XATTR_USER); 741 break; 742 case Opt_inline_xattr: 743 set_opt(sbi, INLINE_XATTR); 744 break; 745 case Opt_noinline_xattr: 746 clear_opt(sbi, INLINE_XATTR); 747 break; 748 case Opt_inline_xattr_size: 749 if (args->from && match_int(args, &arg)) 750 return -EINVAL; 751 set_opt(sbi, INLINE_XATTR_SIZE); 752 F2FS_OPTION(sbi).inline_xattr_size = arg; 753 break; 754 #else 755 case Opt_user_xattr: 756 f2fs_info(sbi, "user_xattr options not supported"); 757 break; 758 case Opt_nouser_xattr: 759 f2fs_info(sbi, "nouser_xattr options not supported"); 760 break; 761 case Opt_inline_xattr: 762 f2fs_info(sbi, "inline_xattr options not supported"); 763 break; 764 case Opt_noinline_xattr: 765 f2fs_info(sbi, "noinline_xattr options not supported"); 766 break; 767 #endif 768 #ifdef CONFIG_F2FS_FS_POSIX_ACL 769 case Opt_acl: 770 set_opt(sbi, POSIX_ACL); 771 break; 772 case Opt_noacl: 773 clear_opt(sbi, POSIX_ACL); 774 break; 775 #else 776 case Opt_acl: 777 f2fs_info(sbi, "acl options not supported"); 778 break; 779 case Opt_noacl: 780 f2fs_info(sbi, "noacl options not supported"); 781 break; 782 #endif 783 case Opt_active_logs: 784 if (args->from && match_int(args, &arg)) 785 return -EINVAL; 786 if (arg != 2 && arg != 4 && 787 arg != NR_CURSEG_PERSIST_TYPE) 788 return -EINVAL; 789 F2FS_OPTION(sbi).active_logs = arg; 790 break; 791 case Opt_disable_ext_identify: 792 set_opt(sbi, DISABLE_EXT_IDENTIFY); 793 break; 794 case Opt_inline_data: 795 set_opt(sbi, INLINE_DATA); 796 break; 797 case Opt_inline_dentry: 798 set_opt(sbi, INLINE_DENTRY); 799 break; 800 case Opt_noinline_dentry: 801 clear_opt(sbi, INLINE_DENTRY); 802 break; 803 case Opt_flush_merge: 804 set_opt(sbi, FLUSH_MERGE); 805 break; 806 case Opt_noflush_merge: 807 clear_opt(sbi, FLUSH_MERGE); 808 break; 809 case Opt_nobarrier: 810 set_opt(sbi, NOBARRIER); 811 break; 812 case Opt_barrier: 813 clear_opt(sbi, NOBARRIER); 814 break; 815 case Opt_fastboot: 816 set_opt(sbi, FASTBOOT); 817 break; 818 case Opt_extent_cache: 819 set_opt(sbi, READ_EXTENT_CACHE); 820 break; 821 case Opt_noextent_cache: 822 clear_opt(sbi, READ_EXTENT_CACHE); 823 break; 824 case Opt_noinline_data: 825 clear_opt(sbi, INLINE_DATA); 826 break; 827 case Opt_data_flush: 828 set_opt(sbi, DATA_FLUSH); 829 break; 830 case Opt_reserve_root: 831 if (args->from && match_int(args, &arg)) 832 return -EINVAL; 833 if (test_opt(sbi, RESERVE_ROOT)) { 834 f2fs_info(sbi, "Preserve previous reserve_root=%u", 835 F2FS_OPTION(sbi).root_reserved_blocks); 836 } else { 837 F2FS_OPTION(sbi).root_reserved_blocks = arg; 838 set_opt(sbi, RESERVE_ROOT); 839 } 840 break; 841 case Opt_resuid: 842 if (args->from && match_int(args, &arg)) 843 return -EINVAL; 844 uid = make_kuid(current_user_ns(), arg); 845 if (!uid_valid(uid)) { 846 f2fs_err(sbi, "Invalid uid value %d", arg); 847 return -EINVAL; 848 } 849 F2FS_OPTION(sbi).s_resuid = uid; 850 break; 851 case Opt_resgid: 852 if (args->from && match_int(args, &arg)) 853 return -EINVAL; 854 gid = make_kgid(current_user_ns(), arg); 855 if (!gid_valid(gid)) { 856 f2fs_err(sbi, "Invalid gid value %d", arg); 857 return -EINVAL; 858 } 859 F2FS_OPTION(sbi).s_resgid = gid; 860 break; 861 case Opt_mode: 862 name = match_strdup(&args[0]); 863 864 if (!name) 865 return -ENOMEM; 866 if (!strcmp(name, "adaptive")) { 867 if (f2fs_sb_has_blkzoned(sbi)) { 868 f2fs_warn(sbi, "adaptive mode is not allowed with zoned block device feature"); 869 kfree(name); 870 return -EINVAL; 871 } 872 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE; 873 } else if (!strcmp(name, "lfs")) { 874 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS; 875 } else if (!strcmp(name, "fragment:segment")) { 876 F2FS_OPTION(sbi).fs_mode = FS_MODE_FRAGMENT_SEG; 877 } else if (!strcmp(name, "fragment:block")) { 878 F2FS_OPTION(sbi).fs_mode = FS_MODE_FRAGMENT_BLK; 879 } else { 880 kfree(name); 881 return -EINVAL; 882 } 883 kfree(name); 884 break; 885 case Opt_io_size_bits: 886 if (args->from && match_int(args, &arg)) 887 return -EINVAL; 888 if (arg <= 0 || arg > __ilog2_u32(BIO_MAX_VECS)) { 889 f2fs_warn(sbi, "Not support %d, larger than %d", 890 1 << arg, BIO_MAX_VECS); 891 return -EINVAL; 892 } 893 F2FS_OPTION(sbi).write_io_size_bits = arg; 894 break; 895 #ifdef CONFIG_F2FS_FAULT_INJECTION 896 case Opt_fault_injection: 897 if (args->from && match_int(args, &arg)) 898 return -EINVAL; 899 f2fs_build_fault_attr(sbi, arg, F2FS_ALL_FAULT_TYPE); 900 set_opt(sbi, FAULT_INJECTION); 901 break; 902 903 case Opt_fault_type: 904 if (args->from && match_int(args, &arg)) 905 return -EINVAL; 906 f2fs_build_fault_attr(sbi, 0, arg); 907 set_opt(sbi, FAULT_INJECTION); 908 break; 909 #else 910 case Opt_fault_injection: 911 f2fs_info(sbi, "fault_injection options not supported"); 912 break; 913 914 case Opt_fault_type: 915 f2fs_info(sbi, "fault_type options not supported"); 916 break; 917 #endif 918 case Opt_lazytime: 919 sb->s_flags |= SB_LAZYTIME; 920 break; 921 case Opt_nolazytime: 922 sb->s_flags &= ~SB_LAZYTIME; 923 break; 924 #ifdef CONFIG_QUOTA 925 case Opt_quota: 926 case Opt_usrquota: 927 set_opt(sbi, USRQUOTA); 928 break; 929 case Opt_grpquota: 930 set_opt(sbi, GRPQUOTA); 931 break; 932 case Opt_prjquota: 933 set_opt(sbi, PRJQUOTA); 934 break; 935 case Opt_usrjquota: 936 ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]); 937 if (ret) 938 return ret; 939 break; 940 case Opt_grpjquota: 941 ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]); 942 if (ret) 943 return ret; 944 break; 945 case Opt_prjjquota: 946 ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]); 947 if (ret) 948 return ret; 949 break; 950 case Opt_offusrjquota: 951 ret = f2fs_clear_qf_name(sb, USRQUOTA); 952 if (ret) 953 return ret; 954 break; 955 case Opt_offgrpjquota: 956 ret = f2fs_clear_qf_name(sb, GRPQUOTA); 957 if (ret) 958 return ret; 959 break; 960 case Opt_offprjjquota: 961 ret = f2fs_clear_qf_name(sb, PRJQUOTA); 962 if (ret) 963 return ret; 964 break; 965 case Opt_jqfmt_vfsold: 966 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD; 967 break; 968 case Opt_jqfmt_vfsv0: 969 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0; 970 break; 971 case Opt_jqfmt_vfsv1: 972 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1; 973 break; 974 case Opt_noquota: 975 clear_opt(sbi, QUOTA); 976 clear_opt(sbi, USRQUOTA); 977 clear_opt(sbi, GRPQUOTA); 978 clear_opt(sbi, PRJQUOTA); 979 break; 980 #else 981 case Opt_quota: 982 case Opt_usrquota: 983 case Opt_grpquota: 984 case Opt_prjquota: 985 case Opt_usrjquota: 986 case Opt_grpjquota: 987 case Opt_prjjquota: 988 case Opt_offusrjquota: 989 case Opt_offgrpjquota: 990 case Opt_offprjjquota: 991 case Opt_jqfmt_vfsold: 992 case Opt_jqfmt_vfsv0: 993 case Opt_jqfmt_vfsv1: 994 case Opt_noquota: 995 f2fs_info(sbi, "quota operations not supported"); 996 break; 997 #endif 998 case Opt_alloc: 999 name = match_strdup(&args[0]); 1000 if (!name) 1001 return -ENOMEM; 1002 1003 if (!strcmp(name, "default")) { 1004 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT; 1005 } else if (!strcmp(name, "reuse")) { 1006 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE; 1007 } else { 1008 kfree(name); 1009 return -EINVAL; 1010 } 1011 kfree(name); 1012 break; 1013 case Opt_fsync: 1014 name = match_strdup(&args[0]); 1015 if (!name) 1016 return -ENOMEM; 1017 if (!strcmp(name, "posix")) { 1018 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX; 1019 } else if (!strcmp(name, "strict")) { 1020 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT; 1021 } else if (!strcmp(name, "nobarrier")) { 1022 F2FS_OPTION(sbi).fsync_mode = 1023 FSYNC_MODE_NOBARRIER; 1024 } else { 1025 kfree(name); 1026 return -EINVAL; 1027 } 1028 kfree(name); 1029 break; 1030 case Opt_test_dummy_encryption: 1031 ret = f2fs_set_test_dummy_encryption(sb, p, &args[0], 1032 is_remount); 1033 if (ret) 1034 return ret; 1035 break; 1036 case Opt_inlinecrypt: 1037 #ifdef CONFIG_FS_ENCRYPTION_INLINE_CRYPT 1038 sb->s_flags |= SB_INLINECRYPT; 1039 #else 1040 f2fs_info(sbi, "inline encryption not supported"); 1041 #endif 1042 break; 1043 case Opt_checkpoint_disable_cap_perc: 1044 if (args->from && match_int(args, &arg)) 1045 return -EINVAL; 1046 if (arg < 0 || arg > 100) 1047 return -EINVAL; 1048 F2FS_OPTION(sbi).unusable_cap_perc = arg; 1049 set_opt(sbi, DISABLE_CHECKPOINT); 1050 break; 1051 case Opt_checkpoint_disable_cap: 1052 if (args->from && match_int(args, &arg)) 1053 return -EINVAL; 1054 F2FS_OPTION(sbi).unusable_cap = arg; 1055 set_opt(sbi, DISABLE_CHECKPOINT); 1056 break; 1057 case Opt_checkpoint_disable: 1058 set_opt(sbi, DISABLE_CHECKPOINT); 1059 break; 1060 case Opt_checkpoint_enable: 1061 clear_opt(sbi, DISABLE_CHECKPOINT); 1062 break; 1063 case Opt_checkpoint_merge: 1064 set_opt(sbi, MERGE_CHECKPOINT); 1065 break; 1066 case Opt_nocheckpoint_merge: 1067 clear_opt(sbi, MERGE_CHECKPOINT); 1068 break; 1069 #ifdef CONFIG_F2FS_FS_COMPRESSION 1070 case Opt_compress_algorithm: 1071 if (!f2fs_sb_has_compression(sbi)) { 1072 f2fs_info(sbi, "Image doesn't support compression"); 1073 break; 1074 } 1075 name = match_strdup(&args[0]); 1076 if (!name) 1077 return -ENOMEM; 1078 if (!strcmp(name, "lzo")) { 1079 #ifdef CONFIG_F2FS_FS_LZO 1080 F2FS_OPTION(sbi).compress_level = 0; 1081 F2FS_OPTION(sbi).compress_algorithm = 1082 COMPRESS_LZO; 1083 #else 1084 f2fs_info(sbi, "kernel doesn't support lzo compression"); 1085 #endif 1086 } else if (!strncmp(name, "lz4", 3)) { 1087 #ifdef CONFIG_F2FS_FS_LZ4 1088 ret = f2fs_set_lz4hc_level(sbi, name); 1089 if (ret) { 1090 kfree(name); 1091 return -EINVAL; 1092 } 1093 F2FS_OPTION(sbi).compress_algorithm = 1094 COMPRESS_LZ4; 1095 #else 1096 f2fs_info(sbi, "kernel doesn't support lz4 compression"); 1097 #endif 1098 } else if (!strncmp(name, "zstd", 4)) { 1099 #ifdef CONFIG_F2FS_FS_ZSTD 1100 ret = f2fs_set_zstd_level(sbi, name); 1101 if (ret) { 1102 kfree(name); 1103 return -EINVAL; 1104 } 1105 F2FS_OPTION(sbi).compress_algorithm = 1106 COMPRESS_ZSTD; 1107 #else 1108 f2fs_info(sbi, "kernel doesn't support zstd compression"); 1109 #endif 1110 } else if (!strcmp(name, "lzo-rle")) { 1111 #ifdef CONFIG_F2FS_FS_LZORLE 1112 F2FS_OPTION(sbi).compress_level = 0; 1113 F2FS_OPTION(sbi).compress_algorithm = 1114 COMPRESS_LZORLE; 1115 #else 1116 f2fs_info(sbi, "kernel doesn't support lzorle compression"); 1117 #endif 1118 } else { 1119 kfree(name); 1120 return -EINVAL; 1121 } 1122 kfree(name); 1123 break; 1124 case Opt_compress_log_size: 1125 if (!f2fs_sb_has_compression(sbi)) { 1126 f2fs_info(sbi, "Image doesn't support compression"); 1127 break; 1128 } 1129 if (args->from && match_int(args, &arg)) 1130 return -EINVAL; 1131 if (arg < MIN_COMPRESS_LOG_SIZE || 1132 arg > MAX_COMPRESS_LOG_SIZE) { 1133 f2fs_err(sbi, 1134 "Compress cluster log size is out of range"); 1135 return -EINVAL; 1136 } 1137 F2FS_OPTION(sbi).compress_log_size = arg; 1138 break; 1139 case Opt_compress_extension: 1140 if (!f2fs_sb_has_compression(sbi)) { 1141 f2fs_info(sbi, "Image doesn't support compression"); 1142 break; 1143 } 1144 name = match_strdup(&args[0]); 1145 if (!name) 1146 return -ENOMEM; 1147 1148 ext = F2FS_OPTION(sbi).extensions; 1149 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt; 1150 1151 if (strlen(name) >= F2FS_EXTENSION_LEN || 1152 ext_cnt >= COMPRESS_EXT_NUM) { 1153 f2fs_err(sbi, 1154 "invalid extension length/number"); 1155 kfree(name); 1156 return -EINVAL; 1157 } 1158 1159 strcpy(ext[ext_cnt], name); 1160 F2FS_OPTION(sbi).compress_ext_cnt++; 1161 kfree(name); 1162 break; 1163 case Opt_nocompress_extension: 1164 if (!f2fs_sb_has_compression(sbi)) { 1165 f2fs_info(sbi, "Image doesn't support compression"); 1166 break; 1167 } 1168 name = match_strdup(&args[0]); 1169 if (!name) 1170 return -ENOMEM; 1171 1172 noext = F2FS_OPTION(sbi).noextensions; 1173 noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt; 1174 1175 if (strlen(name) >= F2FS_EXTENSION_LEN || 1176 noext_cnt >= COMPRESS_EXT_NUM) { 1177 f2fs_err(sbi, 1178 "invalid extension length/number"); 1179 kfree(name); 1180 return -EINVAL; 1181 } 1182 1183 strcpy(noext[noext_cnt], name); 1184 F2FS_OPTION(sbi).nocompress_ext_cnt++; 1185 kfree(name); 1186 break; 1187 case Opt_compress_chksum: 1188 F2FS_OPTION(sbi).compress_chksum = true; 1189 break; 1190 case Opt_compress_mode: 1191 name = match_strdup(&args[0]); 1192 if (!name) 1193 return -ENOMEM; 1194 if (!strcmp(name, "fs")) { 1195 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS; 1196 } else if (!strcmp(name, "user")) { 1197 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_USER; 1198 } else { 1199 kfree(name); 1200 return -EINVAL; 1201 } 1202 kfree(name); 1203 break; 1204 case Opt_compress_cache: 1205 set_opt(sbi, COMPRESS_CACHE); 1206 break; 1207 #else 1208 case Opt_compress_algorithm: 1209 case Opt_compress_log_size: 1210 case Opt_compress_extension: 1211 case Opt_nocompress_extension: 1212 case Opt_compress_chksum: 1213 case Opt_compress_mode: 1214 case Opt_compress_cache: 1215 f2fs_info(sbi, "compression options not supported"); 1216 break; 1217 #endif 1218 case Opt_atgc: 1219 set_opt(sbi, ATGC); 1220 break; 1221 case Opt_gc_merge: 1222 set_opt(sbi, GC_MERGE); 1223 break; 1224 case Opt_nogc_merge: 1225 clear_opt(sbi, GC_MERGE); 1226 break; 1227 case Opt_discard_unit: 1228 name = match_strdup(&args[0]); 1229 if (!name) 1230 return -ENOMEM; 1231 if (!strcmp(name, "block")) { 1232 F2FS_OPTION(sbi).discard_unit = 1233 DISCARD_UNIT_BLOCK; 1234 } else if (!strcmp(name, "segment")) { 1235 F2FS_OPTION(sbi).discard_unit = 1236 DISCARD_UNIT_SEGMENT; 1237 } else if (!strcmp(name, "section")) { 1238 F2FS_OPTION(sbi).discard_unit = 1239 DISCARD_UNIT_SECTION; 1240 } else { 1241 kfree(name); 1242 return -EINVAL; 1243 } 1244 kfree(name); 1245 break; 1246 case Opt_memory_mode: 1247 name = match_strdup(&args[0]); 1248 if (!name) 1249 return -ENOMEM; 1250 if (!strcmp(name, "normal")) { 1251 F2FS_OPTION(sbi).memory_mode = 1252 MEMORY_MODE_NORMAL; 1253 } else if (!strcmp(name, "low")) { 1254 F2FS_OPTION(sbi).memory_mode = 1255 MEMORY_MODE_LOW; 1256 } else { 1257 kfree(name); 1258 return -EINVAL; 1259 } 1260 kfree(name); 1261 break; 1262 case Opt_age_extent_cache: 1263 set_opt(sbi, AGE_EXTENT_CACHE); 1264 break; 1265 default: 1266 f2fs_err(sbi, "Unrecognized mount option \"%s\" or missing value", 1267 p); 1268 return -EINVAL; 1269 } 1270 } 1271 default_check: 1272 #ifdef CONFIG_QUOTA 1273 if (f2fs_check_quota_options(sbi)) 1274 return -EINVAL; 1275 #else 1276 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sbi->sb)) { 1277 f2fs_info(sbi, "Filesystem with quota feature cannot be mounted RDWR without CONFIG_QUOTA"); 1278 return -EINVAL; 1279 } 1280 if (f2fs_sb_has_project_quota(sbi) && !f2fs_readonly(sbi->sb)) { 1281 f2fs_err(sbi, "Filesystem with project quota feature cannot be mounted RDWR without CONFIG_QUOTA"); 1282 return -EINVAL; 1283 } 1284 #endif 1285 #if !IS_ENABLED(CONFIG_UNICODE) 1286 if (f2fs_sb_has_casefold(sbi)) { 1287 f2fs_err(sbi, 1288 "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE"); 1289 return -EINVAL; 1290 } 1291 #endif 1292 /* 1293 * The BLKZONED feature indicates that the drive was formatted with 1294 * zone alignment optimization. This is optional for host-aware 1295 * devices, but mandatory for host-managed zoned block devices. 1296 */ 1297 #ifndef CONFIG_BLK_DEV_ZONED 1298 if (f2fs_sb_has_blkzoned(sbi)) { 1299 f2fs_err(sbi, "Zoned block device support is not enabled"); 1300 return -EINVAL; 1301 } 1302 #endif 1303 if (f2fs_sb_has_blkzoned(sbi)) { 1304 if (F2FS_OPTION(sbi).discard_unit != 1305 DISCARD_UNIT_SECTION) { 1306 f2fs_info(sbi, "Zoned block device doesn't need small discard, set discard_unit=section by default"); 1307 F2FS_OPTION(sbi).discard_unit = 1308 DISCARD_UNIT_SECTION; 1309 } 1310 } 1311 1312 #ifdef CONFIG_F2FS_FS_COMPRESSION 1313 if (f2fs_test_compress_extension(sbi)) { 1314 f2fs_err(sbi, "invalid compress or nocompress extension"); 1315 return -EINVAL; 1316 } 1317 #endif 1318 1319 if (F2FS_IO_SIZE_BITS(sbi) && !f2fs_lfs_mode(sbi)) { 1320 f2fs_err(sbi, "Should set mode=lfs with %uKB-sized IO", 1321 F2FS_IO_SIZE_KB(sbi)); 1322 return -EINVAL; 1323 } 1324 1325 if (test_opt(sbi, INLINE_XATTR_SIZE)) { 1326 int min_size, max_size; 1327 1328 if (!f2fs_sb_has_extra_attr(sbi) || 1329 !f2fs_sb_has_flexible_inline_xattr(sbi)) { 1330 f2fs_err(sbi, "extra_attr or flexible_inline_xattr feature is off"); 1331 return -EINVAL; 1332 } 1333 if (!test_opt(sbi, INLINE_XATTR)) { 1334 f2fs_err(sbi, "inline_xattr_size option should be set with inline_xattr option"); 1335 return -EINVAL; 1336 } 1337 1338 min_size = sizeof(struct f2fs_xattr_header) / sizeof(__le32); 1339 max_size = MAX_INLINE_XATTR_SIZE; 1340 1341 if (F2FS_OPTION(sbi).inline_xattr_size < min_size || 1342 F2FS_OPTION(sbi).inline_xattr_size > max_size) { 1343 f2fs_err(sbi, "inline xattr size is out of range: %d ~ %d", 1344 min_size, max_size); 1345 return -EINVAL; 1346 } 1347 } 1348 1349 if (test_opt(sbi, DISABLE_CHECKPOINT) && f2fs_lfs_mode(sbi)) { 1350 f2fs_err(sbi, "LFS not compatible with checkpoint=disable"); 1351 return -EINVAL; 1352 } 1353 1354 if (test_opt(sbi, ATGC) && f2fs_lfs_mode(sbi)) { 1355 f2fs_err(sbi, "LFS not compatible with ATGC"); 1356 return -EINVAL; 1357 } 1358 1359 if (f2fs_is_readonly(sbi) && test_opt(sbi, FLUSH_MERGE)) { 1360 f2fs_err(sbi, "FLUSH_MERGE not compatible with readonly mode"); 1361 return -EINVAL; 1362 } 1363 1364 if (f2fs_sb_has_readonly(sbi) && !f2fs_readonly(sbi->sb)) { 1365 f2fs_err(sbi, "Allow to mount readonly mode only"); 1366 return -EROFS; 1367 } 1368 return 0; 1369 } 1370 1371 static struct inode *f2fs_alloc_inode(struct super_block *sb) 1372 { 1373 struct f2fs_inode_info *fi; 1374 1375 if (time_to_inject(F2FS_SB(sb), FAULT_SLAB_ALLOC)) { 1376 f2fs_show_injection_info(F2FS_SB(sb), FAULT_SLAB_ALLOC); 1377 return NULL; 1378 } 1379 1380 fi = alloc_inode_sb(sb, f2fs_inode_cachep, GFP_F2FS_ZERO); 1381 if (!fi) 1382 return NULL; 1383 1384 init_once((void *) fi); 1385 1386 /* Initialize f2fs-specific inode info */ 1387 atomic_set(&fi->dirty_pages, 0); 1388 atomic_set(&fi->i_compr_blocks, 0); 1389 init_f2fs_rwsem(&fi->i_sem); 1390 spin_lock_init(&fi->i_size_lock); 1391 INIT_LIST_HEAD(&fi->dirty_list); 1392 INIT_LIST_HEAD(&fi->gdirty_list); 1393 init_f2fs_rwsem(&fi->i_gc_rwsem[READ]); 1394 init_f2fs_rwsem(&fi->i_gc_rwsem[WRITE]); 1395 init_f2fs_rwsem(&fi->i_xattr_sem); 1396 1397 /* Will be used by directory only */ 1398 fi->i_dir_level = F2FS_SB(sb)->dir_level; 1399 1400 return &fi->vfs_inode; 1401 } 1402 1403 static int f2fs_drop_inode(struct inode *inode) 1404 { 1405 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1406 int ret; 1407 1408 /* 1409 * during filesystem shutdown, if checkpoint is disabled, 1410 * drop useless meta/node dirty pages. 1411 */ 1412 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) { 1413 if (inode->i_ino == F2FS_NODE_INO(sbi) || 1414 inode->i_ino == F2FS_META_INO(sbi)) { 1415 trace_f2fs_drop_inode(inode, 1); 1416 return 1; 1417 } 1418 } 1419 1420 /* 1421 * This is to avoid a deadlock condition like below. 1422 * writeback_single_inode(inode) 1423 * - f2fs_write_data_page 1424 * - f2fs_gc -> iput -> evict 1425 * - inode_wait_for_writeback(inode) 1426 */ 1427 if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) { 1428 if (!inode->i_nlink && !is_bad_inode(inode)) { 1429 /* to avoid evict_inode call simultaneously */ 1430 atomic_inc(&inode->i_count); 1431 spin_unlock(&inode->i_lock); 1432 1433 f2fs_abort_atomic_write(inode, true); 1434 1435 /* should remain fi->extent_tree for writepage */ 1436 f2fs_destroy_extent_node(inode); 1437 1438 sb_start_intwrite(inode->i_sb); 1439 f2fs_i_size_write(inode, 0); 1440 1441 f2fs_submit_merged_write_cond(F2FS_I_SB(inode), 1442 inode, NULL, 0, DATA); 1443 truncate_inode_pages_final(inode->i_mapping); 1444 1445 if (F2FS_HAS_BLOCKS(inode)) 1446 f2fs_truncate(inode); 1447 1448 sb_end_intwrite(inode->i_sb); 1449 1450 spin_lock(&inode->i_lock); 1451 atomic_dec(&inode->i_count); 1452 } 1453 trace_f2fs_drop_inode(inode, 0); 1454 return 0; 1455 } 1456 ret = generic_drop_inode(inode); 1457 if (!ret) 1458 ret = fscrypt_drop_inode(inode); 1459 trace_f2fs_drop_inode(inode, ret); 1460 return ret; 1461 } 1462 1463 int f2fs_inode_dirtied(struct inode *inode, bool sync) 1464 { 1465 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1466 int ret = 0; 1467 1468 spin_lock(&sbi->inode_lock[DIRTY_META]); 1469 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) { 1470 ret = 1; 1471 } else { 1472 set_inode_flag(inode, FI_DIRTY_INODE); 1473 stat_inc_dirty_inode(sbi, DIRTY_META); 1474 } 1475 if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) { 1476 list_add_tail(&F2FS_I(inode)->gdirty_list, 1477 &sbi->inode_list[DIRTY_META]); 1478 inc_page_count(sbi, F2FS_DIRTY_IMETA); 1479 } 1480 spin_unlock(&sbi->inode_lock[DIRTY_META]); 1481 return ret; 1482 } 1483 1484 void f2fs_inode_synced(struct inode *inode) 1485 { 1486 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1487 1488 spin_lock(&sbi->inode_lock[DIRTY_META]); 1489 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) { 1490 spin_unlock(&sbi->inode_lock[DIRTY_META]); 1491 return; 1492 } 1493 if (!list_empty(&F2FS_I(inode)->gdirty_list)) { 1494 list_del_init(&F2FS_I(inode)->gdirty_list); 1495 dec_page_count(sbi, F2FS_DIRTY_IMETA); 1496 } 1497 clear_inode_flag(inode, FI_DIRTY_INODE); 1498 clear_inode_flag(inode, FI_AUTO_RECOVER); 1499 stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META); 1500 spin_unlock(&sbi->inode_lock[DIRTY_META]); 1501 } 1502 1503 /* 1504 * f2fs_dirty_inode() is called from __mark_inode_dirty() 1505 * 1506 * We should call set_dirty_inode to write the dirty inode through write_inode. 1507 */ 1508 static void f2fs_dirty_inode(struct inode *inode, int flags) 1509 { 1510 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1511 1512 if (inode->i_ino == F2FS_NODE_INO(sbi) || 1513 inode->i_ino == F2FS_META_INO(sbi)) 1514 return; 1515 1516 if (is_inode_flag_set(inode, FI_AUTO_RECOVER)) 1517 clear_inode_flag(inode, FI_AUTO_RECOVER); 1518 1519 f2fs_inode_dirtied(inode, false); 1520 } 1521 1522 static void f2fs_free_inode(struct inode *inode) 1523 { 1524 fscrypt_free_inode(inode); 1525 kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode)); 1526 } 1527 1528 static void destroy_percpu_info(struct f2fs_sb_info *sbi) 1529 { 1530 percpu_counter_destroy(&sbi->total_valid_inode_count); 1531 percpu_counter_destroy(&sbi->rf_node_block_count); 1532 percpu_counter_destroy(&sbi->alloc_valid_block_count); 1533 } 1534 1535 static void destroy_device_list(struct f2fs_sb_info *sbi) 1536 { 1537 int i; 1538 1539 for (i = 0; i < sbi->s_ndevs; i++) { 1540 blkdev_put(FDEV(i).bdev, FMODE_EXCL); 1541 #ifdef CONFIG_BLK_DEV_ZONED 1542 kvfree(FDEV(i).blkz_seq); 1543 #endif 1544 } 1545 kvfree(sbi->devs); 1546 } 1547 1548 static void f2fs_put_super(struct super_block *sb) 1549 { 1550 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1551 int i; 1552 bool dropped; 1553 1554 /* unregister procfs/sysfs entries in advance to avoid race case */ 1555 f2fs_unregister_sysfs(sbi); 1556 1557 f2fs_quota_off_umount(sb); 1558 1559 /* prevent remaining shrinker jobs */ 1560 mutex_lock(&sbi->umount_mutex); 1561 1562 /* 1563 * flush all issued checkpoints and stop checkpoint issue thread. 1564 * after then, all checkpoints should be done by each process context. 1565 */ 1566 f2fs_stop_ckpt_thread(sbi); 1567 1568 /* 1569 * We don't need to do checkpoint when superblock is clean. 1570 * But, the previous checkpoint was not done by umount, it needs to do 1571 * clean checkpoint again. 1572 */ 1573 if ((is_sbi_flag_set(sbi, SBI_IS_DIRTY) || 1574 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))) { 1575 struct cp_control cpc = { 1576 .reason = CP_UMOUNT, 1577 }; 1578 f2fs_write_checkpoint(sbi, &cpc); 1579 } 1580 1581 /* be sure to wait for any on-going discard commands */ 1582 dropped = f2fs_issue_discard_timeout(sbi); 1583 1584 if ((f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) && 1585 !sbi->discard_blks && !dropped) { 1586 struct cp_control cpc = { 1587 .reason = CP_UMOUNT | CP_TRIMMED, 1588 }; 1589 f2fs_write_checkpoint(sbi, &cpc); 1590 } 1591 1592 /* 1593 * normally superblock is clean, so we need to release this. 1594 * In addition, EIO will skip do checkpoint, we need this as well. 1595 */ 1596 f2fs_release_ino_entry(sbi, true); 1597 1598 f2fs_leave_shrinker(sbi); 1599 mutex_unlock(&sbi->umount_mutex); 1600 1601 /* our cp_error case, we can wait for any writeback page */ 1602 f2fs_flush_merged_writes(sbi); 1603 1604 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA); 1605 1606 f2fs_bug_on(sbi, sbi->fsync_node_num); 1607 1608 f2fs_destroy_compress_inode(sbi); 1609 1610 iput(sbi->node_inode); 1611 sbi->node_inode = NULL; 1612 1613 iput(sbi->meta_inode); 1614 sbi->meta_inode = NULL; 1615 1616 /* 1617 * iput() can update stat information, if f2fs_write_checkpoint() 1618 * above failed with error. 1619 */ 1620 f2fs_destroy_stats(sbi); 1621 1622 /* destroy f2fs internal modules */ 1623 f2fs_destroy_node_manager(sbi); 1624 f2fs_destroy_segment_manager(sbi); 1625 1626 f2fs_destroy_post_read_wq(sbi); 1627 1628 kvfree(sbi->ckpt); 1629 1630 sb->s_fs_info = NULL; 1631 if (sbi->s_chksum_driver) 1632 crypto_free_shash(sbi->s_chksum_driver); 1633 kfree(sbi->raw_super); 1634 1635 destroy_device_list(sbi); 1636 f2fs_destroy_page_array_cache(sbi); 1637 f2fs_destroy_xattr_caches(sbi); 1638 mempool_destroy(sbi->write_io_dummy); 1639 #ifdef CONFIG_QUOTA 1640 for (i = 0; i < MAXQUOTAS; i++) 1641 kfree(F2FS_OPTION(sbi).s_qf_names[i]); 1642 #endif 1643 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy); 1644 destroy_percpu_info(sbi); 1645 f2fs_destroy_iostat(sbi); 1646 for (i = 0; i < NR_PAGE_TYPE; i++) 1647 kvfree(sbi->write_io[i]); 1648 #if IS_ENABLED(CONFIG_UNICODE) 1649 utf8_unload(sb->s_encoding); 1650 #endif 1651 kfree(sbi); 1652 } 1653 1654 int f2fs_sync_fs(struct super_block *sb, int sync) 1655 { 1656 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1657 int err = 0; 1658 1659 if (unlikely(f2fs_cp_error(sbi))) 1660 return 0; 1661 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) 1662 return 0; 1663 1664 trace_f2fs_sync_fs(sb, sync); 1665 1666 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 1667 return -EAGAIN; 1668 1669 if (sync) 1670 err = f2fs_issue_checkpoint(sbi); 1671 1672 return err; 1673 } 1674 1675 static int f2fs_freeze(struct super_block *sb) 1676 { 1677 if (f2fs_readonly(sb)) 1678 return 0; 1679 1680 /* IO error happened before */ 1681 if (unlikely(f2fs_cp_error(F2FS_SB(sb)))) 1682 return -EIO; 1683 1684 /* must be clean, since sync_filesystem() was already called */ 1685 if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY)) 1686 return -EINVAL; 1687 1688 /* Let's flush checkpoints and stop the thread. */ 1689 f2fs_flush_ckpt_thread(F2FS_SB(sb)); 1690 1691 /* to avoid deadlock on f2fs_evict_inode->SB_FREEZE_FS */ 1692 set_sbi_flag(F2FS_SB(sb), SBI_IS_FREEZING); 1693 return 0; 1694 } 1695 1696 static int f2fs_unfreeze(struct super_block *sb) 1697 { 1698 clear_sbi_flag(F2FS_SB(sb), SBI_IS_FREEZING); 1699 return 0; 1700 } 1701 1702 #ifdef CONFIG_QUOTA 1703 static int f2fs_statfs_project(struct super_block *sb, 1704 kprojid_t projid, struct kstatfs *buf) 1705 { 1706 struct kqid qid; 1707 struct dquot *dquot; 1708 u64 limit; 1709 u64 curblock; 1710 1711 qid = make_kqid_projid(projid); 1712 dquot = dqget(sb, qid); 1713 if (IS_ERR(dquot)) 1714 return PTR_ERR(dquot); 1715 spin_lock(&dquot->dq_dqb_lock); 1716 1717 limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit, 1718 dquot->dq_dqb.dqb_bhardlimit); 1719 if (limit) 1720 limit >>= sb->s_blocksize_bits; 1721 1722 if (limit && buf->f_blocks > limit) { 1723 curblock = (dquot->dq_dqb.dqb_curspace + 1724 dquot->dq_dqb.dqb_rsvspace) >> sb->s_blocksize_bits; 1725 buf->f_blocks = limit; 1726 buf->f_bfree = buf->f_bavail = 1727 (buf->f_blocks > curblock) ? 1728 (buf->f_blocks - curblock) : 0; 1729 } 1730 1731 limit = min_not_zero(dquot->dq_dqb.dqb_isoftlimit, 1732 dquot->dq_dqb.dqb_ihardlimit); 1733 1734 if (limit && buf->f_files > limit) { 1735 buf->f_files = limit; 1736 buf->f_ffree = 1737 (buf->f_files > dquot->dq_dqb.dqb_curinodes) ? 1738 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0; 1739 } 1740 1741 spin_unlock(&dquot->dq_dqb_lock); 1742 dqput(dquot); 1743 return 0; 1744 } 1745 #endif 1746 1747 static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf) 1748 { 1749 struct super_block *sb = dentry->d_sb; 1750 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1751 u64 id = huge_encode_dev(sb->s_bdev->bd_dev); 1752 block_t total_count, user_block_count, start_count; 1753 u64 avail_node_count; 1754 unsigned int total_valid_node_count; 1755 1756 total_count = le64_to_cpu(sbi->raw_super->block_count); 1757 start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr); 1758 buf->f_type = F2FS_SUPER_MAGIC; 1759 buf->f_bsize = sbi->blocksize; 1760 1761 buf->f_blocks = total_count - start_count; 1762 1763 spin_lock(&sbi->stat_lock); 1764 1765 user_block_count = sbi->user_block_count; 1766 total_valid_node_count = valid_node_count(sbi); 1767 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM; 1768 buf->f_bfree = user_block_count - valid_user_blocks(sbi) - 1769 sbi->current_reserved_blocks; 1770 1771 if (unlikely(buf->f_bfree <= sbi->unusable_block_count)) 1772 buf->f_bfree = 0; 1773 else 1774 buf->f_bfree -= sbi->unusable_block_count; 1775 spin_unlock(&sbi->stat_lock); 1776 1777 if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks) 1778 buf->f_bavail = buf->f_bfree - 1779 F2FS_OPTION(sbi).root_reserved_blocks; 1780 else 1781 buf->f_bavail = 0; 1782 1783 if (avail_node_count > user_block_count) { 1784 buf->f_files = user_block_count; 1785 buf->f_ffree = buf->f_bavail; 1786 } else { 1787 buf->f_files = avail_node_count; 1788 buf->f_ffree = min(avail_node_count - total_valid_node_count, 1789 buf->f_bavail); 1790 } 1791 1792 buf->f_namelen = F2FS_NAME_LEN; 1793 buf->f_fsid = u64_to_fsid(id); 1794 1795 #ifdef CONFIG_QUOTA 1796 if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) && 1797 sb_has_quota_limits_enabled(sb, PRJQUOTA)) { 1798 f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf); 1799 } 1800 #endif 1801 return 0; 1802 } 1803 1804 static inline void f2fs_show_quota_options(struct seq_file *seq, 1805 struct super_block *sb) 1806 { 1807 #ifdef CONFIG_QUOTA 1808 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1809 1810 if (F2FS_OPTION(sbi).s_jquota_fmt) { 1811 char *fmtname = ""; 1812 1813 switch (F2FS_OPTION(sbi).s_jquota_fmt) { 1814 case QFMT_VFS_OLD: 1815 fmtname = "vfsold"; 1816 break; 1817 case QFMT_VFS_V0: 1818 fmtname = "vfsv0"; 1819 break; 1820 case QFMT_VFS_V1: 1821 fmtname = "vfsv1"; 1822 break; 1823 } 1824 seq_printf(seq, ",jqfmt=%s", fmtname); 1825 } 1826 1827 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA]) 1828 seq_show_option(seq, "usrjquota", 1829 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]); 1830 1831 if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]) 1832 seq_show_option(seq, "grpjquota", 1833 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]); 1834 1835 if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) 1836 seq_show_option(seq, "prjjquota", 1837 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]); 1838 #endif 1839 } 1840 1841 #ifdef CONFIG_F2FS_FS_COMPRESSION 1842 static inline void f2fs_show_compress_options(struct seq_file *seq, 1843 struct super_block *sb) 1844 { 1845 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1846 char *algtype = ""; 1847 int i; 1848 1849 if (!f2fs_sb_has_compression(sbi)) 1850 return; 1851 1852 switch (F2FS_OPTION(sbi).compress_algorithm) { 1853 case COMPRESS_LZO: 1854 algtype = "lzo"; 1855 break; 1856 case COMPRESS_LZ4: 1857 algtype = "lz4"; 1858 break; 1859 case COMPRESS_ZSTD: 1860 algtype = "zstd"; 1861 break; 1862 case COMPRESS_LZORLE: 1863 algtype = "lzo-rle"; 1864 break; 1865 } 1866 seq_printf(seq, ",compress_algorithm=%s", algtype); 1867 1868 if (F2FS_OPTION(sbi).compress_level) 1869 seq_printf(seq, ":%d", F2FS_OPTION(sbi).compress_level); 1870 1871 seq_printf(seq, ",compress_log_size=%u", 1872 F2FS_OPTION(sbi).compress_log_size); 1873 1874 for (i = 0; i < F2FS_OPTION(sbi).compress_ext_cnt; i++) { 1875 seq_printf(seq, ",compress_extension=%s", 1876 F2FS_OPTION(sbi).extensions[i]); 1877 } 1878 1879 for (i = 0; i < F2FS_OPTION(sbi).nocompress_ext_cnt; i++) { 1880 seq_printf(seq, ",nocompress_extension=%s", 1881 F2FS_OPTION(sbi).noextensions[i]); 1882 } 1883 1884 if (F2FS_OPTION(sbi).compress_chksum) 1885 seq_puts(seq, ",compress_chksum"); 1886 1887 if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_FS) 1888 seq_printf(seq, ",compress_mode=%s", "fs"); 1889 else if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_USER) 1890 seq_printf(seq, ",compress_mode=%s", "user"); 1891 1892 if (test_opt(sbi, COMPRESS_CACHE)) 1893 seq_puts(seq, ",compress_cache"); 1894 } 1895 #endif 1896 1897 static int f2fs_show_options(struct seq_file *seq, struct dentry *root) 1898 { 1899 struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb); 1900 1901 if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_SYNC) 1902 seq_printf(seq, ",background_gc=%s", "sync"); 1903 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_ON) 1904 seq_printf(seq, ",background_gc=%s", "on"); 1905 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF) 1906 seq_printf(seq, ",background_gc=%s", "off"); 1907 1908 if (test_opt(sbi, GC_MERGE)) 1909 seq_puts(seq, ",gc_merge"); 1910 1911 if (test_opt(sbi, DISABLE_ROLL_FORWARD)) 1912 seq_puts(seq, ",disable_roll_forward"); 1913 if (test_opt(sbi, NORECOVERY)) 1914 seq_puts(seq, ",norecovery"); 1915 if (test_opt(sbi, DISCARD)) 1916 seq_puts(seq, ",discard"); 1917 else 1918 seq_puts(seq, ",nodiscard"); 1919 if (test_opt(sbi, NOHEAP)) 1920 seq_puts(seq, ",no_heap"); 1921 else 1922 seq_puts(seq, ",heap"); 1923 #ifdef CONFIG_F2FS_FS_XATTR 1924 if (test_opt(sbi, XATTR_USER)) 1925 seq_puts(seq, ",user_xattr"); 1926 else 1927 seq_puts(seq, ",nouser_xattr"); 1928 if (test_opt(sbi, INLINE_XATTR)) 1929 seq_puts(seq, ",inline_xattr"); 1930 else 1931 seq_puts(seq, ",noinline_xattr"); 1932 if (test_opt(sbi, INLINE_XATTR_SIZE)) 1933 seq_printf(seq, ",inline_xattr_size=%u", 1934 F2FS_OPTION(sbi).inline_xattr_size); 1935 #endif 1936 #ifdef CONFIG_F2FS_FS_POSIX_ACL 1937 if (test_opt(sbi, POSIX_ACL)) 1938 seq_puts(seq, ",acl"); 1939 else 1940 seq_puts(seq, ",noacl"); 1941 #endif 1942 if (test_opt(sbi, DISABLE_EXT_IDENTIFY)) 1943 seq_puts(seq, ",disable_ext_identify"); 1944 if (test_opt(sbi, INLINE_DATA)) 1945 seq_puts(seq, ",inline_data"); 1946 else 1947 seq_puts(seq, ",noinline_data"); 1948 if (test_opt(sbi, INLINE_DENTRY)) 1949 seq_puts(seq, ",inline_dentry"); 1950 else 1951 seq_puts(seq, ",noinline_dentry"); 1952 if (test_opt(sbi, FLUSH_MERGE)) 1953 seq_puts(seq, ",flush_merge"); 1954 else 1955 seq_puts(seq, ",noflush_merge"); 1956 if (test_opt(sbi, NOBARRIER)) 1957 seq_puts(seq, ",nobarrier"); 1958 else 1959 seq_puts(seq, ",barrier"); 1960 if (test_opt(sbi, FASTBOOT)) 1961 seq_puts(seq, ",fastboot"); 1962 if (test_opt(sbi, READ_EXTENT_CACHE)) 1963 seq_puts(seq, ",extent_cache"); 1964 else 1965 seq_puts(seq, ",noextent_cache"); 1966 if (test_opt(sbi, AGE_EXTENT_CACHE)) 1967 seq_puts(seq, ",age_extent_cache"); 1968 if (test_opt(sbi, DATA_FLUSH)) 1969 seq_puts(seq, ",data_flush"); 1970 1971 seq_puts(seq, ",mode="); 1972 if (F2FS_OPTION(sbi).fs_mode == FS_MODE_ADAPTIVE) 1973 seq_puts(seq, "adaptive"); 1974 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_LFS) 1975 seq_puts(seq, "lfs"); 1976 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_SEG) 1977 seq_puts(seq, "fragment:segment"); 1978 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_BLK) 1979 seq_puts(seq, "fragment:block"); 1980 seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs); 1981 if (test_opt(sbi, RESERVE_ROOT)) 1982 seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u", 1983 F2FS_OPTION(sbi).root_reserved_blocks, 1984 from_kuid_munged(&init_user_ns, 1985 F2FS_OPTION(sbi).s_resuid), 1986 from_kgid_munged(&init_user_ns, 1987 F2FS_OPTION(sbi).s_resgid)); 1988 if (F2FS_IO_SIZE_BITS(sbi)) 1989 seq_printf(seq, ",io_bits=%u", 1990 F2FS_OPTION(sbi).write_io_size_bits); 1991 #ifdef CONFIG_F2FS_FAULT_INJECTION 1992 if (test_opt(sbi, FAULT_INJECTION)) { 1993 seq_printf(seq, ",fault_injection=%u", 1994 F2FS_OPTION(sbi).fault_info.inject_rate); 1995 seq_printf(seq, ",fault_type=%u", 1996 F2FS_OPTION(sbi).fault_info.inject_type); 1997 } 1998 #endif 1999 #ifdef CONFIG_QUOTA 2000 if (test_opt(sbi, QUOTA)) 2001 seq_puts(seq, ",quota"); 2002 if (test_opt(sbi, USRQUOTA)) 2003 seq_puts(seq, ",usrquota"); 2004 if (test_opt(sbi, GRPQUOTA)) 2005 seq_puts(seq, ",grpquota"); 2006 if (test_opt(sbi, PRJQUOTA)) 2007 seq_puts(seq, ",prjquota"); 2008 #endif 2009 f2fs_show_quota_options(seq, sbi->sb); 2010 2011 fscrypt_show_test_dummy_encryption(seq, ',', sbi->sb); 2012 2013 if (sbi->sb->s_flags & SB_INLINECRYPT) 2014 seq_puts(seq, ",inlinecrypt"); 2015 2016 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT) 2017 seq_printf(seq, ",alloc_mode=%s", "default"); 2018 else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE) 2019 seq_printf(seq, ",alloc_mode=%s", "reuse"); 2020 2021 if (test_opt(sbi, DISABLE_CHECKPOINT)) 2022 seq_printf(seq, ",checkpoint=disable:%u", 2023 F2FS_OPTION(sbi).unusable_cap); 2024 if (test_opt(sbi, MERGE_CHECKPOINT)) 2025 seq_puts(seq, ",checkpoint_merge"); 2026 else 2027 seq_puts(seq, ",nocheckpoint_merge"); 2028 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX) 2029 seq_printf(seq, ",fsync_mode=%s", "posix"); 2030 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) 2031 seq_printf(seq, ",fsync_mode=%s", "strict"); 2032 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER) 2033 seq_printf(seq, ",fsync_mode=%s", "nobarrier"); 2034 2035 #ifdef CONFIG_F2FS_FS_COMPRESSION 2036 f2fs_show_compress_options(seq, sbi->sb); 2037 #endif 2038 2039 if (test_opt(sbi, ATGC)) 2040 seq_puts(seq, ",atgc"); 2041 2042 if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_BLOCK) 2043 seq_printf(seq, ",discard_unit=%s", "block"); 2044 else if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SEGMENT) 2045 seq_printf(seq, ",discard_unit=%s", "segment"); 2046 else if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SECTION) 2047 seq_printf(seq, ",discard_unit=%s", "section"); 2048 2049 if (F2FS_OPTION(sbi).memory_mode == MEMORY_MODE_NORMAL) 2050 seq_printf(seq, ",memory=%s", "normal"); 2051 else if (F2FS_OPTION(sbi).memory_mode == MEMORY_MODE_LOW) 2052 seq_printf(seq, ",memory=%s", "low"); 2053 2054 return 0; 2055 } 2056 2057 static void default_options(struct f2fs_sb_info *sbi) 2058 { 2059 /* init some FS parameters */ 2060 if (f2fs_sb_has_readonly(sbi)) 2061 F2FS_OPTION(sbi).active_logs = NR_CURSEG_RO_TYPE; 2062 else 2063 F2FS_OPTION(sbi).active_logs = NR_CURSEG_PERSIST_TYPE; 2064 2065 F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS; 2066 if (le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_main) <= 2067 SMALL_VOLUME_SEGMENTS) 2068 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE; 2069 else 2070 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT; 2071 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX; 2072 F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID); 2073 F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID); 2074 F2FS_OPTION(sbi).compress_algorithm = COMPRESS_LZ4; 2075 F2FS_OPTION(sbi).compress_log_size = MIN_COMPRESS_LOG_SIZE; 2076 F2FS_OPTION(sbi).compress_ext_cnt = 0; 2077 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS; 2078 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON; 2079 F2FS_OPTION(sbi).memory_mode = MEMORY_MODE_NORMAL; 2080 2081 sbi->sb->s_flags &= ~SB_INLINECRYPT; 2082 2083 set_opt(sbi, INLINE_XATTR); 2084 set_opt(sbi, INLINE_DATA); 2085 set_opt(sbi, INLINE_DENTRY); 2086 set_opt(sbi, READ_EXTENT_CACHE); 2087 set_opt(sbi, NOHEAP); 2088 clear_opt(sbi, DISABLE_CHECKPOINT); 2089 set_opt(sbi, MERGE_CHECKPOINT); 2090 F2FS_OPTION(sbi).unusable_cap = 0; 2091 sbi->sb->s_flags |= SB_LAZYTIME; 2092 if (!f2fs_is_readonly(sbi)) 2093 set_opt(sbi, FLUSH_MERGE); 2094 if (f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) 2095 set_opt(sbi, DISCARD); 2096 if (f2fs_sb_has_blkzoned(sbi)) { 2097 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS; 2098 F2FS_OPTION(sbi).discard_unit = DISCARD_UNIT_SECTION; 2099 } else { 2100 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE; 2101 F2FS_OPTION(sbi).discard_unit = DISCARD_UNIT_BLOCK; 2102 } 2103 2104 #ifdef CONFIG_F2FS_FS_XATTR 2105 set_opt(sbi, XATTR_USER); 2106 #endif 2107 #ifdef CONFIG_F2FS_FS_POSIX_ACL 2108 set_opt(sbi, POSIX_ACL); 2109 #endif 2110 2111 f2fs_build_fault_attr(sbi, 0, 0); 2112 } 2113 2114 #ifdef CONFIG_QUOTA 2115 static int f2fs_enable_quotas(struct super_block *sb); 2116 #endif 2117 2118 static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi) 2119 { 2120 unsigned int s_flags = sbi->sb->s_flags; 2121 struct cp_control cpc; 2122 unsigned int gc_mode = sbi->gc_mode; 2123 int err = 0; 2124 int ret; 2125 block_t unusable; 2126 2127 if (s_flags & SB_RDONLY) { 2128 f2fs_err(sbi, "checkpoint=disable on readonly fs"); 2129 return -EINVAL; 2130 } 2131 sbi->sb->s_flags |= SB_ACTIVE; 2132 2133 /* check if we need more GC first */ 2134 unusable = f2fs_get_unusable_blocks(sbi); 2135 if (!f2fs_disable_cp_again(sbi, unusable)) 2136 goto skip_gc; 2137 2138 f2fs_update_time(sbi, DISABLE_TIME); 2139 2140 sbi->gc_mode = GC_URGENT_HIGH; 2141 2142 while (!f2fs_time_over(sbi, DISABLE_TIME)) { 2143 struct f2fs_gc_control gc_control = { 2144 .victim_segno = NULL_SEGNO, 2145 .init_gc_type = FG_GC, 2146 .should_migrate_blocks = false, 2147 .err_gc_skipped = true, 2148 .nr_free_secs = 1 }; 2149 2150 f2fs_down_write(&sbi->gc_lock); 2151 err = f2fs_gc(sbi, &gc_control); 2152 if (err == -ENODATA) { 2153 err = 0; 2154 break; 2155 } 2156 if (err && err != -EAGAIN) 2157 break; 2158 } 2159 2160 ret = sync_filesystem(sbi->sb); 2161 if (ret || err) { 2162 err = ret ? ret : err; 2163 goto restore_flag; 2164 } 2165 2166 unusable = f2fs_get_unusable_blocks(sbi); 2167 if (f2fs_disable_cp_again(sbi, unusable)) { 2168 err = -EAGAIN; 2169 goto restore_flag; 2170 } 2171 2172 skip_gc: 2173 f2fs_down_write(&sbi->gc_lock); 2174 cpc.reason = CP_PAUSE; 2175 set_sbi_flag(sbi, SBI_CP_DISABLED); 2176 err = f2fs_write_checkpoint(sbi, &cpc); 2177 if (err) 2178 goto out_unlock; 2179 2180 spin_lock(&sbi->stat_lock); 2181 sbi->unusable_block_count = unusable; 2182 spin_unlock(&sbi->stat_lock); 2183 2184 out_unlock: 2185 f2fs_up_write(&sbi->gc_lock); 2186 restore_flag: 2187 sbi->gc_mode = gc_mode; 2188 sbi->sb->s_flags = s_flags; /* Restore SB_RDONLY status */ 2189 return err; 2190 } 2191 2192 static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi) 2193 { 2194 int retry = DEFAULT_RETRY_IO_COUNT; 2195 2196 /* we should flush all the data to keep data consistency */ 2197 do { 2198 sync_inodes_sb(sbi->sb); 2199 f2fs_io_schedule_timeout(DEFAULT_IO_TIMEOUT); 2200 } while (get_pages(sbi, F2FS_DIRTY_DATA) && retry--); 2201 2202 if (unlikely(retry < 0)) 2203 f2fs_warn(sbi, "checkpoint=enable has some unwritten data."); 2204 2205 f2fs_down_write(&sbi->gc_lock); 2206 f2fs_dirty_to_prefree(sbi); 2207 2208 clear_sbi_flag(sbi, SBI_CP_DISABLED); 2209 set_sbi_flag(sbi, SBI_IS_DIRTY); 2210 f2fs_up_write(&sbi->gc_lock); 2211 2212 f2fs_sync_fs(sbi->sb, 1); 2213 2214 /* Let's ensure there's no pending checkpoint anymore */ 2215 f2fs_flush_ckpt_thread(sbi); 2216 } 2217 2218 static int f2fs_remount(struct super_block *sb, int *flags, char *data) 2219 { 2220 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2221 struct f2fs_mount_info org_mount_opt; 2222 unsigned long old_sb_flags; 2223 int err; 2224 bool need_restart_gc = false, need_stop_gc = false; 2225 bool need_restart_ckpt = false, need_stop_ckpt = false; 2226 bool need_restart_flush = false, need_stop_flush = false; 2227 bool need_restart_discard = false, need_stop_discard = false; 2228 bool no_read_extent_cache = !test_opt(sbi, READ_EXTENT_CACHE); 2229 bool no_age_extent_cache = !test_opt(sbi, AGE_EXTENT_CACHE); 2230 bool enable_checkpoint = !test_opt(sbi, DISABLE_CHECKPOINT); 2231 bool no_io_align = !F2FS_IO_ALIGNED(sbi); 2232 bool no_atgc = !test_opt(sbi, ATGC); 2233 bool no_discard = !test_opt(sbi, DISCARD); 2234 bool no_compress_cache = !test_opt(sbi, COMPRESS_CACHE); 2235 bool block_unit_discard = f2fs_block_unit_discard(sbi); 2236 struct discard_cmd_control *dcc; 2237 #ifdef CONFIG_QUOTA 2238 int i, j; 2239 #endif 2240 2241 /* 2242 * Save the old mount options in case we 2243 * need to restore them. 2244 */ 2245 org_mount_opt = sbi->mount_opt; 2246 old_sb_flags = sb->s_flags; 2247 2248 #ifdef CONFIG_QUOTA 2249 org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt; 2250 for (i = 0; i < MAXQUOTAS; i++) { 2251 if (F2FS_OPTION(sbi).s_qf_names[i]) { 2252 org_mount_opt.s_qf_names[i] = 2253 kstrdup(F2FS_OPTION(sbi).s_qf_names[i], 2254 GFP_KERNEL); 2255 if (!org_mount_opt.s_qf_names[i]) { 2256 for (j = 0; j < i; j++) 2257 kfree(org_mount_opt.s_qf_names[j]); 2258 return -ENOMEM; 2259 } 2260 } else { 2261 org_mount_opt.s_qf_names[i] = NULL; 2262 } 2263 } 2264 #endif 2265 2266 /* recover superblocks we couldn't write due to previous RO mount */ 2267 if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) { 2268 err = f2fs_commit_super(sbi, false); 2269 f2fs_info(sbi, "Try to recover all the superblocks, ret: %d", 2270 err); 2271 if (!err) 2272 clear_sbi_flag(sbi, SBI_NEED_SB_WRITE); 2273 } 2274 2275 default_options(sbi); 2276 2277 /* parse mount options */ 2278 err = parse_options(sb, data, true); 2279 if (err) 2280 goto restore_opts; 2281 2282 /* 2283 * Previous and new state of filesystem is RO, 2284 * so skip checking GC and FLUSH_MERGE conditions. 2285 */ 2286 if (f2fs_readonly(sb) && (*flags & SB_RDONLY)) 2287 goto skip; 2288 2289 if (f2fs_sb_has_readonly(sbi) && !(*flags & SB_RDONLY)) { 2290 err = -EROFS; 2291 goto restore_opts; 2292 } 2293 2294 #ifdef CONFIG_QUOTA 2295 if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) { 2296 err = dquot_suspend(sb, -1); 2297 if (err < 0) 2298 goto restore_opts; 2299 } else if (f2fs_readonly(sb) && !(*flags & SB_RDONLY)) { 2300 /* dquot_resume needs RW */ 2301 sb->s_flags &= ~SB_RDONLY; 2302 if (sb_any_quota_suspended(sb)) { 2303 dquot_resume(sb, -1); 2304 } else if (f2fs_sb_has_quota_ino(sbi)) { 2305 err = f2fs_enable_quotas(sb); 2306 if (err) 2307 goto restore_opts; 2308 } 2309 } 2310 #endif 2311 /* disallow enable atgc dynamically */ 2312 if (no_atgc == !!test_opt(sbi, ATGC)) { 2313 err = -EINVAL; 2314 f2fs_warn(sbi, "switch atgc option is not allowed"); 2315 goto restore_opts; 2316 } 2317 2318 /* disallow enable/disable extent_cache dynamically */ 2319 if (no_read_extent_cache == !!test_opt(sbi, READ_EXTENT_CACHE)) { 2320 err = -EINVAL; 2321 f2fs_warn(sbi, "switch extent_cache option is not allowed"); 2322 goto restore_opts; 2323 } 2324 /* disallow enable/disable age extent_cache dynamically */ 2325 if (no_age_extent_cache == !!test_opt(sbi, AGE_EXTENT_CACHE)) { 2326 err = -EINVAL; 2327 f2fs_warn(sbi, "switch age_extent_cache option is not allowed"); 2328 goto restore_opts; 2329 } 2330 2331 if (no_io_align == !!F2FS_IO_ALIGNED(sbi)) { 2332 err = -EINVAL; 2333 f2fs_warn(sbi, "switch io_bits option is not allowed"); 2334 goto restore_opts; 2335 } 2336 2337 if (no_compress_cache == !!test_opt(sbi, COMPRESS_CACHE)) { 2338 err = -EINVAL; 2339 f2fs_warn(sbi, "switch compress_cache option is not allowed"); 2340 goto restore_opts; 2341 } 2342 2343 if (block_unit_discard != f2fs_block_unit_discard(sbi)) { 2344 err = -EINVAL; 2345 f2fs_warn(sbi, "switch discard_unit option is not allowed"); 2346 goto restore_opts; 2347 } 2348 2349 if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) { 2350 err = -EINVAL; 2351 f2fs_warn(sbi, "disabling checkpoint not compatible with read-only"); 2352 goto restore_opts; 2353 } 2354 2355 /* 2356 * We stop the GC thread if FS is mounted as RO 2357 * or if background_gc = off is passed in mount 2358 * option. Also sync the filesystem. 2359 */ 2360 if ((*flags & SB_RDONLY) || 2361 (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF && 2362 !test_opt(sbi, GC_MERGE))) { 2363 if (sbi->gc_thread) { 2364 f2fs_stop_gc_thread(sbi); 2365 need_restart_gc = true; 2366 } 2367 } else if (!sbi->gc_thread) { 2368 err = f2fs_start_gc_thread(sbi); 2369 if (err) 2370 goto restore_opts; 2371 need_stop_gc = true; 2372 } 2373 2374 if (*flags & SB_RDONLY) { 2375 sync_inodes_sb(sb); 2376 2377 set_sbi_flag(sbi, SBI_IS_DIRTY); 2378 set_sbi_flag(sbi, SBI_IS_CLOSE); 2379 f2fs_sync_fs(sb, 1); 2380 clear_sbi_flag(sbi, SBI_IS_CLOSE); 2381 } 2382 2383 if ((*flags & SB_RDONLY) || test_opt(sbi, DISABLE_CHECKPOINT) || 2384 !test_opt(sbi, MERGE_CHECKPOINT)) { 2385 f2fs_stop_ckpt_thread(sbi); 2386 need_restart_ckpt = true; 2387 } else { 2388 /* Flush if the prevous checkpoint, if exists. */ 2389 f2fs_flush_ckpt_thread(sbi); 2390 2391 err = f2fs_start_ckpt_thread(sbi); 2392 if (err) { 2393 f2fs_err(sbi, 2394 "Failed to start F2FS issue_checkpoint_thread (%d)", 2395 err); 2396 goto restore_gc; 2397 } 2398 need_stop_ckpt = true; 2399 } 2400 2401 /* 2402 * We stop issue flush thread if FS is mounted as RO 2403 * or if flush_merge is not passed in mount option. 2404 */ 2405 if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) { 2406 clear_opt(sbi, FLUSH_MERGE); 2407 f2fs_destroy_flush_cmd_control(sbi, false); 2408 need_restart_flush = true; 2409 } else { 2410 err = f2fs_create_flush_cmd_control(sbi); 2411 if (err) 2412 goto restore_ckpt; 2413 need_stop_flush = true; 2414 } 2415 2416 if (no_discard == !!test_opt(sbi, DISCARD)) { 2417 if (test_opt(sbi, DISCARD)) { 2418 err = f2fs_start_discard_thread(sbi); 2419 if (err) 2420 goto restore_flush; 2421 need_stop_discard = true; 2422 } else { 2423 dcc = SM_I(sbi)->dcc_info; 2424 f2fs_stop_discard_thread(sbi); 2425 if (atomic_read(&dcc->discard_cmd_cnt)) 2426 f2fs_issue_discard_timeout(sbi); 2427 need_restart_discard = true; 2428 } 2429 } 2430 2431 if (enable_checkpoint == !!test_opt(sbi, DISABLE_CHECKPOINT)) { 2432 if (test_opt(sbi, DISABLE_CHECKPOINT)) { 2433 err = f2fs_disable_checkpoint(sbi); 2434 if (err) 2435 goto restore_discard; 2436 } else { 2437 f2fs_enable_checkpoint(sbi); 2438 } 2439 } 2440 2441 skip: 2442 #ifdef CONFIG_QUOTA 2443 /* Release old quota file names */ 2444 for (i = 0; i < MAXQUOTAS; i++) 2445 kfree(org_mount_opt.s_qf_names[i]); 2446 #endif 2447 /* Update the POSIXACL Flag */ 2448 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) | 2449 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0); 2450 2451 limit_reserve_root(sbi); 2452 adjust_unusable_cap_perc(sbi); 2453 *flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME); 2454 return 0; 2455 restore_discard: 2456 if (need_restart_discard) { 2457 if (f2fs_start_discard_thread(sbi)) 2458 f2fs_warn(sbi, "discard has been stopped"); 2459 } else if (need_stop_discard) { 2460 f2fs_stop_discard_thread(sbi); 2461 } 2462 restore_flush: 2463 if (need_restart_flush) { 2464 if (f2fs_create_flush_cmd_control(sbi)) 2465 f2fs_warn(sbi, "background flush thread has stopped"); 2466 } else if (need_stop_flush) { 2467 clear_opt(sbi, FLUSH_MERGE); 2468 f2fs_destroy_flush_cmd_control(sbi, false); 2469 } 2470 restore_ckpt: 2471 if (need_restart_ckpt) { 2472 if (f2fs_start_ckpt_thread(sbi)) 2473 f2fs_warn(sbi, "background ckpt thread has stopped"); 2474 } else if (need_stop_ckpt) { 2475 f2fs_stop_ckpt_thread(sbi); 2476 } 2477 restore_gc: 2478 if (need_restart_gc) { 2479 if (f2fs_start_gc_thread(sbi)) 2480 f2fs_warn(sbi, "background gc thread has stopped"); 2481 } else if (need_stop_gc) { 2482 f2fs_stop_gc_thread(sbi); 2483 } 2484 restore_opts: 2485 #ifdef CONFIG_QUOTA 2486 F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt; 2487 for (i = 0; i < MAXQUOTAS; i++) { 2488 kfree(F2FS_OPTION(sbi).s_qf_names[i]); 2489 F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i]; 2490 } 2491 #endif 2492 sbi->mount_opt = org_mount_opt; 2493 sb->s_flags = old_sb_flags; 2494 return err; 2495 } 2496 2497 #ifdef CONFIG_QUOTA 2498 /* Read data from quotafile */ 2499 static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data, 2500 size_t len, loff_t off) 2501 { 2502 struct inode *inode = sb_dqopt(sb)->files[type]; 2503 struct address_space *mapping = inode->i_mapping; 2504 block_t blkidx = F2FS_BYTES_TO_BLK(off); 2505 int offset = off & (sb->s_blocksize - 1); 2506 int tocopy; 2507 size_t toread; 2508 loff_t i_size = i_size_read(inode); 2509 struct page *page; 2510 2511 if (off > i_size) 2512 return 0; 2513 2514 if (off + len > i_size) 2515 len = i_size - off; 2516 toread = len; 2517 while (toread > 0) { 2518 tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread); 2519 repeat: 2520 page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS); 2521 if (IS_ERR(page)) { 2522 if (PTR_ERR(page) == -ENOMEM) { 2523 memalloc_retry_wait(GFP_NOFS); 2524 goto repeat; 2525 } 2526 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2527 return PTR_ERR(page); 2528 } 2529 2530 lock_page(page); 2531 2532 if (unlikely(page->mapping != mapping)) { 2533 f2fs_put_page(page, 1); 2534 goto repeat; 2535 } 2536 if (unlikely(!PageUptodate(page))) { 2537 f2fs_put_page(page, 1); 2538 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2539 return -EIO; 2540 } 2541 2542 memcpy_from_page(data, page, offset, tocopy); 2543 f2fs_put_page(page, 1); 2544 2545 offset = 0; 2546 toread -= tocopy; 2547 data += tocopy; 2548 blkidx++; 2549 } 2550 return len; 2551 } 2552 2553 /* Write to quotafile */ 2554 static ssize_t f2fs_quota_write(struct super_block *sb, int type, 2555 const char *data, size_t len, loff_t off) 2556 { 2557 struct inode *inode = sb_dqopt(sb)->files[type]; 2558 struct address_space *mapping = inode->i_mapping; 2559 const struct address_space_operations *a_ops = mapping->a_ops; 2560 int offset = off & (sb->s_blocksize - 1); 2561 size_t towrite = len; 2562 struct page *page; 2563 void *fsdata = NULL; 2564 int err = 0; 2565 int tocopy; 2566 2567 while (towrite > 0) { 2568 tocopy = min_t(unsigned long, sb->s_blocksize - offset, 2569 towrite); 2570 retry: 2571 err = a_ops->write_begin(NULL, mapping, off, tocopy, 2572 &page, &fsdata); 2573 if (unlikely(err)) { 2574 if (err == -ENOMEM) { 2575 f2fs_io_schedule_timeout(DEFAULT_IO_TIMEOUT); 2576 goto retry; 2577 } 2578 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2579 break; 2580 } 2581 2582 memcpy_to_page(page, offset, data, tocopy); 2583 2584 a_ops->write_end(NULL, mapping, off, tocopy, tocopy, 2585 page, fsdata); 2586 offset = 0; 2587 towrite -= tocopy; 2588 off += tocopy; 2589 data += tocopy; 2590 cond_resched(); 2591 } 2592 2593 if (len == towrite) 2594 return err; 2595 inode->i_mtime = inode->i_ctime = current_time(inode); 2596 f2fs_mark_inode_dirty_sync(inode, false); 2597 return len - towrite; 2598 } 2599 2600 int f2fs_dquot_initialize(struct inode *inode) 2601 { 2602 if (time_to_inject(F2FS_I_SB(inode), FAULT_DQUOT_INIT)) { 2603 f2fs_show_injection_info(F2FS_I_SB(inode), FAULT_DQUOT_INIT); 2604 return -ESRCH; 2605 } 2606 2607 return dquot_initialize(inode); 2608 } 2609 2610 static struct dquot **f2fs_get_dquots(struct inode *inode) 2611 { 2612 return F2FS_I(inode)->i_dquot; 2613 } 2614 2615 static qsize_t *f2fs_get_reserved_space(struct inode *inode) 2616 { 2617 return &F2FS_I(inode)->i_reserved_quota; 2618 } 2619 2620 static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type) 2621 { 2622 if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) { 2623 f2fs_err(sbi, "quota sysfile may be corrupted, skip loading it"); 2624 return 0; 2625 } 2626 2627 return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type], 2628 F2FS_OPTION(sbi).s_jquota_fmt, type); 2629 } 2630 2631 int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly) 2632 { 2633 int enabled = 0; 2634 int i, err; 2635 2636 if (f2fs_sb_has_quota_ino(sbi) && rdonly) { 2637 err = f2fs_enable_quotas(sbi->sb); 2638 if (err) { 2639 f2fs_err(sbi, "Cannot turn on quota_ino: %d", err); 2640 return 0; 2641 } 2642 return 1; 2643 } 2644 2645 for (i = 0; i < MAXQUOTAS; i++) { 2646 if (F2FS_OPTION(sbi).s_qf_names[i]) { 2647 err = f2fs_quota_on_mount(sbi, i); 2648 if (!err) { 2649 enabled = 1; 2650 continue; 2651 } 2652 f2fs_err(sbi, "Cannot turn on quotas: %d on %d", 2653 err, i); 2654 } 2655 } 2656 return enabled; 2657 } 2658 2659 static int f2fs_quota_enable(struct super_block *sb, int type, int format_id, 2660 unsigned int flags) 2661 { 2662 struct inode *qf_inode; 2663 unsigned long qf_inum; 2664 int err; 2665 2666 BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb))); 2667 2668 qf_inum = f2fs_qf_ino(sb, type); 2669 if (!qf_inum) 2670 return -EPERM; 2671 2672 qf_inode = f2fs_iget(sb, qf_inum); 2673 if (IS_ERR(qf_inode)) { 2674 f2fs_err(F2FS_SB(sb), "Bad quota inode %u:%lu", type, qf_inum); 2675 return PTR_ERR(qf_inode); 2676 } 2677 2678 /* Don't account quota for quota files to avoid recursion */ 2679 qf_inode->i_flags |= S_NOQUOTA; 2680 err = dquot_load_quota_inode(qf_inode, type, format_id, flags); 2681 iput(qf_inode); 2682 return err; 2683 } 2684 2685 static int f2fs_enable_quotas(struct super_block *sb) 2686 { 2687 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2688 int type, err = 0; 2689 unsigned long qf_inum; 2690 bool quota_mopt[MAXQUOTAS] = { 2691 test_opt(sbi, USRQUOTA), 2692 test_opt(sbi, GRPQUOTA), 2693 test_opt(sbi, PRJQUOTA), 2694 }; 2695 2696 if (is_set_ckpt_flags(F2FS_SB(sb), CP_QUOTA_NEED_FSCK_FLAG)) { 2697 f2fs_err(sbi, "quota file may be corrupted, skip loading it"); 2698 return 0; 2699 } 2700 2701 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE; 2702 2703 for (type = 0; type < MAXQUOTAS; type++) { 2704 qf_inum = f2fs_qf_ino(sb, type); 2705 if (qf_inum) { 2706 err = f2fs_quota_enable(sb, type, QFMT_VFS_V1, 2707 DQUOT_USAGE_ENABLED | 2708 (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0)); 2709 if (err) { 2710 f2fs_err(sbi, "Failed to enable quota tracking (type=%d, err=%d). Please run fsck to fix.", 2711 type, err); 2712 for (type--; type >= 0; type--) 2713 dquot_quota_off(sb, type); 2714 set_sbi_flag(F2FS_SB(sb), 2715 SBI_QUOTA_NEED_REPAIR); 2716 return err; 2717 } 2718 } 2719 } 2720 return 0; 2721 } 2722 2723 static int f2fs_quota_sync_file(struct f2fs_sb_info *sbi, int type) 2724 { 2725 struct quota_info *dqopt = sb_dqopt(sbi->sb); 2726 struct address_space *mapping = dqopt->files[type]->i_mapping; 2727 int ret = 0; 2728 2729 ret = dquot_writeback_dquots(sbi->sb, type); 2730 if (ret) 2731 goto out; 2732 2733 ret = filemap_fdatawrite(mapping); 2734 if (ret) 2735 goto out; 2736 2737 /* if we are using journalled quota */ 2738 if (is_journalled_quota(sbi)) 2739 goto out; 2740 2741 ret = filemap_fdatawait(mapping); 2742 2743 truncate_inode_pages(&dqopt->files[type]->i_data, 0); 2744 out: 2745 if (ret) 2746 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2747 return ret; 2748 } 2749 2750 int f2fs_quota_sync(struct super_block *sb, int type) 2751 { 2752 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2753 struct quota_info *dqopt = sb_dqopt(sb); 2754 int cnt; 2755 int ret = 0; 2756 2757 /* 2758 * Now when everything is written we can discard the pagecache so 2759 * that userspace sees the changes. 2760 */ 2761 for (cnt = 0; cnt < MAXQUOTAS; cnt++) { 2762 2763 if (type != -1 && cnt != type) 2764 continue; 2765 2766 if (!sb_has_quota_active(sb, cnt)) 2767 continue; 2768 2769 if (!f2fs_sb_has_quota_ino(sbi)) 2770 inode_lock(dqopt->files[cnt]); 2771 2772 /* 2773 * do_quotactl 2774 * f2fs_quota_sync 2775 * f2fs_down_read(quota_sem) 2776 * dquot_writeback_dquots() 2777 * f2fs_dquot_commit 2778 * block_operation 2779 * f2fs_down_read(quota_sem) 2780 */ 2781 f2fs_lock_op(sbi); 2782 f2fs_down_read(&sbi->quota_sem); 2783 2784 ret = f2fs_quota_sync_file(sbi, cnt); 2785 2786 f2fs_up_read(&sbi->quota_sem); 2787 f2fs_unlock_op(sbi); 2788 2789 if (!f2fs_sb_has_quota_ino(sbi)) 2790 inode_unlock(dqopt->files[cnt]); 2791 2792 if (ret) 2793 break; 2794 } 2795 return ret; 2796 } 2797 2798 static int f2fs_quota_on(struct super_block *sb, int type, int format_id, 2799 const struct path *path) 2800 { 2801 struct inode *inode; 2802 int err; 2803 2804 /* if quota sysfile exists, deny enabling quota with specific file */ 2805 if (f2fs_sb_has_quota_ino(F2FS_SB(sb))) { 2806 f2fs_err(F2FS_SB(sb), "quota sysfile already exists"); 2807 return -EBUSY; 2808 } 2809 2810 err = f2fs_quota_sync(sb, type); 2811 if (err) 2812 return err; 2813 2814 err = dquot_quota_on(sb, type, format_id, path); 2815 if (err) 2816 return err; 2817 2818 inode = d_inode(path->dentry); 2819 2820 inode_lock(inode); 2821 F2FS_I(inode)->i_flags |= F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL; 2822 f2fs_set_inode_flags(inode); 2823 inode_unlock(inode); 2824 f2fs_mark_inode_dirty_sync(inode, false); 2825 2826 return 0; 2827 } 2828 2829 static int __f2fs_quota_off(struct super_block *sb, int type) 2830 { 2831 struct inode *inode = sb_dqopt(sb)->files[type]; 2832 int err; 2833 2834 if (!inode || !igrab(inode)) 2835 return dquot_quota_off(sb, type); 2836 2837 err = f2fs_quota_sync(sb, type); 2838 if (err) 2839 goto out_put; 2840 2841 err = dquot_quota_off(sb, type); 2842 if (err || f2fs_sb_has_quota_ino(F2FS_SB(sb))) 2843 goto out_put; 2844 2845 inode_lock(inode); 2846 F2FS_I(inode)->i_flags &= ~(F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL); 2847 f2fs_set_inode_flags(inode); 2848 inode_unlock(inode); 2849 f2fs_mark_inode_dirty_sync(inode, false); 2850 out_put: 2851 iput(inode); 2852 return err; 2853 } 2854 2855 static int f2fs_quota_off(struct super_block *sb, int type) 2856 { 2857 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2858 int err; 2859 2860 err = __f2fs_quota_off(sb, type); 2861 2862 /* 2863 * quotactl can shutdown journalled quota, result in inconsistence 2864 * between quota record and fs data by following updates, tag the 2865 * flag to let fsck be aware of it. 2866 */ 2867 if (is_journalled_quota(sbi)) 2868 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2869 return err; 2870 } 2871 2872 void f2fs_quota_off_umount(struct super_block *sb) 2873 { 2874 int type; 2875 int err; 2876 2877 for (type = 0; type < MAXQUOTAS; type++) { 2878 err = __f2fs_quota_off(sb, type); 2879 if (err) { 2880 int ret = dquot_quota_off(sb, type); 2881 2882 f2fs_err(F2FS_SB(sb), "Fail to turn off disk quota (type: %d, err: %d, ret:%d), Please run fsck to fix it.", 2883 type, err, ret); 2884 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2885 } 2886 } 2887 /* 2888 * In case of checkpoint=disable, we must flush quota blocks. 2889 * This can cause NULL exception for node_inode in end_io, since 2890 * put_super already dropped it. 2891 */ 2892 sync_filesystem(sb); 2893 } 2894 2895 static void f2fs_truncate_quota_inode_pages(struct super_block *sb) 2896 { 2897 struct quota_info *dqopt = sb_dqopt(sb); 2898 int type; 2899 2900 for (type = 0; type < MAXQUOTAS; type++) { 2901 if (!dqopt->files[type]) 2902 continue; 2903 f2fs_inode_synced(dqopt->files[type]); 2904 } 2905 } 2906 2907 static int f2fs_dquot_commit(struct dquot *dquot) 2908 { 2909 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb); 2910 int ret; 2911 2912 f2fs_down_read_nested(&sbi->quota_sem, SINGLE_DEPTH_NESTING); 2913 ret = dquot_commit(dquot); 2914 if (ret < 0) 2915 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2916 f2fs_up_read(&sbi->quota_sem); 2917 return ret; 2918 } 2919 2920 static int f2fs_dquot_acquire(struct dquot *dquot) 2921 { 2922 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb); 2923 int ret; 2924 2925 f2fs_down_read(&sbi->quota_sem); 2926 ret = dquot_acquire(dquot); 2927 if (ret < 0) 2928 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2929 f2fs_up_read(&sbi->quota_sem); 2930 return ret; 2931 } 2932 2933 static int f2fs_dquot_release(struct dquot *dquot) 2934 { 2935 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb); 2936 int ret = dquot_release(dquot); 2937 2938 if (ret < 0) 2939 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2940 return ret; 2941 } 2942 2943 static int f2fs_dquot_mark_dquot_dirty(struct dquot *dquot) 2944 { 2945 struct super_block *sb = dquot->dq_sb; 2946 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2947 int ret = dquot_mark_dquot_dirty(dquot); 2948 2949 /* if we are using journalled quota */ 2950 if (is_journalled_quota(sbi)) 2951 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH); 2952 2953 return ret; 2954 } 2955 2956 static int f2fs_dquot_commit_info(struct super_block *sb, int type) 2957 { 2958 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2959 int ret = dquot_commit_info(sb, type); 2960 2961 if (ret < 0) 2962 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2963 return ret; 2964 } 2965 2966 static int f2fs_get_projid(struct inode *inode, kprojid_t *projid) 2967 { 2968 *projid = F2FS_I(inode)->i_projid; 2969 return 0; 2970 } 2971 2972 static const struct dquot_operations f2fs_quota_operations = { 2973 .get_reserved_space = f2fs_get_reserved_space, 2974 .write_dquot = f2fs_dquot_commit, 2975 .acquire_dquot = f2fs_dquot_acquire, 2976 .release_dquot = f2fs_dquot_release, 2977 .mark_dirty = f2fs_dquot_mark_dquot_dirty, 2978 .write_info = f2fs_dquot_commit_info, 2979 .alloc_dquot = dquot_alloc, 2980 .destroy_dquot = dquot_destroy, 2981 .get_projid = f2fs_get_projid, 2982 .get_next_id = dquot_get_next_id, 2983 }; 2984 2985 static const struct quotactl_ops f2fs_quotactl_ops = { 2986 .quota_on = f2fs_quota_on, 2987 .quota_off = f2fs_quota_off, 2988 .quota_sync = f2fs_quota_sync, 2989 .get_state = dquot_get_state, 2990 .set_info = dquot_set_dqinfo, 2991 .get_dqblk = dquot_get_dqblk, 2992 .set_dqblk = dquot_set_dqblk, 2993 .get_nextdqblk = dquot_get_next_dqblk, 2994 }; 2995 #else 2996 int f2fs_dquot_initialize(struct inode *inode) 2997 { 2998 return 0; 2999 } 3000 3001 int f2fs_quota_sync(struct super_block *sb, int type) 3002 { 3003 return 0; 3004 } 3005 3006 void f2fs_quota_off_umount(struct super_block *sb) 3007 { 3008 } 3009 #endif 3010 3011 static const struct super_operations f2fs_sops = { 3012 .alloc_inode = f2fs_alloc_inode, 3013 .free_inode = f2fs_free_inode, 3014 .drop_inode = f2fs_drop_inode, 3015 .write_inode = f2fs_write_inode, 3016 .dirty_inode = f2fs_dirty_inode, 3017 .show_options = f2fs_show_options, 3018 #ifdef CONFIG_QUOTA 3019 .quota_read = f2fs_quota_read, 3020 .quota_write = f2fs_quota_write, 3021 .get_dquots = f2fs_get_dquots, 3022 #endif 3023 .evict_inode = f2fs_evict_inode, 3024 .put_super = f2fs_put_super, 3025 .sync_fs = f2fs_sync_fs, 3026 .freeze_fs = f2fs_freeze, 3027 .unfreeze_fs = f2fs_unfreeze, 3028 .statfs = f2fs_statfs, 3029 .remount_fs = f2fs_remount, 3030 }; 3031 3032 #ifdef CONFIG_FS_ENCRYPTION 3033 static int f2fs_get_context(struct inode *inode, void *ctx, size_t len) 3034 { 3035 return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION, 3036 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, 3037 ctx, len, NULL); 3038 } 3039 3040 static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len, 3041 void *fs_data) 3042 { 3043 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 3044 3045 /* 3046 * Encrypting the root directory is not allowed because fsck 3047 * expects lost+found directory to exist and remain unencrypted 3048 * if LOST_FOUND feature is enabled. 3049 * 3050 */ 3051 if (f2fs_sb_has_lost_found(sbi) && 3052 inode->i_ino == F2FS_ROOT_INO(sbi)) 3053 return -EPERM; 3054 3055 return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION, 3056 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, 3057 ctx, len, fs_data, XATTR_CREATE); 3058 } 3059 3060 static const union fscrypt_policy *f2fs_get_dummy_policy(struct super_block *sb) 3061 { 3062 return F2FS_OPTION(F2FS_SB(sb)).dummy_enc_policy.policy; 3063 } 3064 3065 static bool f2fs_has_stable_inodes(struct super_block *sb) 3066 { 3067 return true; 3068 } 3069 3070 static void f2fs_get_ino_and_lblk_bits(struct super_block *sb, 3071 int *ino_bits_ret, int *lblk_bits_ret) 3072 { 3073 *ino_bits_ret = 8 * sizeof(nid_t); 3074 *lblk_bits_ret = 8 * sizeof(block_t); 3075 } 3076 3077 static struct block_device **f2fs_get_devices(struct super_block *sb, 3078 unsigned int *num_devs) 3079 { 3080 struct f2fs_sb_info *sbi = F2FS_SB(sb); 3081 struct block_device **devs; 3082 int i; 3083 3084 if (!f2fs_is_multi_device(sbi)) 3085 return NULL; 3086 3087 devs = kmalloc_array(sbi->s_ndevs, sizeof(*devs), GFP_KERNEL); 3088 if (!devs) 3089 return ERR_PTR(-ENOMEM); 3090 3091 for (i = 0; i < sbi->s_ndevs; i++) 3092 devs[i] = FDEV(i).bdev; 3093 *num_devs = sbi->s_ndevs; 3094 return devs; 3095 } 3096 3097 static const struct fscrypt_operations f2fs_cryptops = { 3098 .key_prefix = "f2fs:", 3099 .get_context = f2fs_get_context, 3100 .set_context = f2fs_set_context, 3101 .get_dummy_policy = f2fs_get_dummy_policy, 3102 .empty_dir = f2fs_empty_dir, 3103 .has_stable_inodes = f2fs_has_stable_inodes, 3104 .get_ino_and_lblk_bits = f2fs_get_ino_and_lblk_bits, 3105 .get_devices = f2fs_get_devices, 3106 }; 3107 #endif 3108 3109 static struct inode *f2fs_nfs_get_inode(struct super_block *sb, 3110 u64 ino, u32 generation) 3111 { 3112 struct f2fs_sb_info *sbi = F2FS_SB(sb); 3113 struct inode *inode; 3114 3115 if (f2fs_check_nid_range(sbi, ino)) 3116 return ERR_PTR(-ESTALE); 3117 3118 /* 3119 * f2fs_iget isn't quite right if the inode is currently unallocated! 3120 * However f2fs_iget currently does appropriate checks to handle stale 3121 * inodes so everything is OK. 3122 */ 3123 inode = f2fs_iget(sb, ino); 3124 if (IS_ERR(inode)) 3125 return ERR_CAST(inode); 3126 if (unlikely(generation && inode->i_generation != generation)) { 3127 /* we didn't find the right inode.. */ 3128 iput(inode); 3129 return ERR_PTR(-ESTALE); 3130 } 3131 return inode; 3132 } 3133 3134 static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid, 3135 int fh_len, int fh_type) 3136 { 3137 return generic_fh_to_dentry(sb, fid, fh_len, fh_type, 3138 f2fs_nfs_get_inode); 3139 } 3140 3141 static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid, 3142 int fh_len, int fh_type) 3143 { 3144 return generic_fh_to_parent(sb, fid, fh_len, fh_type, 3145 f2fs_nfs_get_inode); 3146 } 3147 3148 static const struct export_operations f2fs_export_ops = { 3149 .fh_to_dentry = f2fs_fh_to_dentry, 3150 .fh_to_parent = f2fs_fh_to_parent, 3151 .get_parent = f2fs_get_parent, 3152 }; 3153 3154 loff_t max_file_blocks(struct inode *inode) 3155 { 3156 loff_t result = 0; 3157 loff_t leaf_count; 3158 3159 /* 3160 * note: previously, result is equal to (DEF_ADDRS_PER_INODE - 3161 * DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more 3162 * space in inode.i_addr, it will be more safe to reassign 3163 * result as zero. 3164 */ 3165 3166 if (inode && f2fs_compressed_file(inode)) 3167 leaf_count = ADDRS_PER_BLOCK(inode); 3168 else 3169 leaf_count = DEF_ADDRS_PER_BLOCK; 3170 3171 /* two direct node blocks */ 3172 result += (leaf_count * 2); 3173 3174 /* two indirect node blocks */ 3175 leaf_count *= NIDS_PER_BLOCK; 3176 result += (leaf_count * 2); 3177 3178 /* one double indirect node block */ 3179 leaf_count *= NIDS_PER_BLOCK; 3180 result += leaf_count; 3181 3182 return result; 3183 } 3184 3185 static int __f2fs_commit_super(struct buffer_head *bh, 3186 struct f2fs_super_block *super) 3187 { 3188 lock_buffer(bh); 3189 if (super) 3190 memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super)); 3191 set_buffer_dirty(bh); 3192 unlock_buffer(bh); 3193 3194 /* it's rare case, we can do fua all the time */ 3195 return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA); 3196 } 3197 3198 static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi, 3199 struct buffer_head *bh) 3200 { 3201 struct f2fs_super_block *raw_super = (struct f2fs_super_block *) 3202 (bh->b_data + F2FS_SUPER_OFFSET); 3203 struct super_block *sb = sbi->sb; 3204 u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr); 3205 u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr); 3206 u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr); 3207 u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr); 3208 u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr); 3209 u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr); 3210 u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt); 3211 u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit); 3212 u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat); 3213 u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa); 3214 u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main); 3215 u32 segment_count = le32_to_cpu(raw_super->segment_count); 3216 u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); 3217 u64 main_end_blkaddr = main_blkaddr + 3218 (segment_count_main << log_blocks_per_seg); 3219 u64 seg_end_blkaddr = segment0_blkaddr + 3220 (segment_count << log_blocks_per_seg); 3221 3222 if (segment0_blkaddr != cp_blkaddr) { 3223 f2fs_info(sbi, "Mismatch start address, segment0(%u) cp_blkaddr(%u)", 3224 segment0_blkaddr, cp_blkaddr); 3225 return true; 3226 } 3227 3228 if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) != 3229 sit_blkaddr) { 3230 f2fs_info(sbi, "Wrong CP boundary, start(%u) end(%u) blocks(%u)", 3231 cp_blkaddr, sit_blkaddr, 3232 segment_count_ckpt << log_blocks_per_seg); 3233 return true; 3234 } 3235 3236 if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) != 3237 nat_blkaddr) { 3238 f2fs_info(sbi, "Wrong SIT boundary, start(%u) end(%u) blocks(%u)", 3239 sit_blkaddr, nat_blkaddr, 3240 segment_count_sit << log_blocks_per_seg); 3241 return true; 3242 } 3243 3244 if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) != 3245 ssa_blkaddr) { 3246 f2fs_info(sbi, "Wrong NAT boundary, start(%u) end(%u) blocks(%u)", 3247 nat_blkaddr, ssa_blkaddr, 3248 segment_count_nat << log_blocks_per_seg); 3249 return true; 3250 } 3251 3252 if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) != 3253 main_blkaddr) { 3254 f2fs_info(sbi, "Wrong SSA boundary, start(%u) end(%u) blocks(%u)", 3255 ssa_blkaddr, main_blkaddr, 3256 segment_count_ssa << log_blocks_per_seg); 3257 return true; 3258 } 3259 3260 if (main_end_blkaddr > seg_end_blkaddr) { 3261 f2fs_info(sbi, "Wrong MAIN_AREA boundary, start(%u) end(%llu) block(%u)", 3262 main_blkaddr, seg_end_blkaddr, 3263 segment_count_main << log_blocks_per_seg); 3264 return true; 3265 } else if (main_end_blkaddr < seg_end_blkaddr) { 3266 int err = 0; 3267 char *res; 3268 3269 /* fix in-memory information all the time */ 3270 raw_super->segment_count = cpu_to_le32((main_end_blkaddr - 3271 segment0_blkaddr) >> log_blocks_per_seg); 3272 3273 if (f2fs_readonly(sb) || bdev_read_only(sb->s_bdev)) { 3274 set_sbi_flag(sbi, SBI_NEED_SB_WRITE); 3275 res = "internally"; 3276 } else { 3277 err = __f2fs_commit_super(bh, NULL); 3278 res = err ? "failed" : "done"; 3279 } 3280 f2fs_info(sbi, "Fix alignment : %s, start(%u) end(%llu) block(%u)", 3281 res, main_blkaddr, seg_end_blkaddr, 3282 segment_count_main << log_blocks_per_seg); 3283 if (err) 3284 return true; 3285 } 3286 return false; 3287 } 3288 3289 static int sanity_check_raw_super(struct f2fs_sb_info *sbi, 3290 struct buffer_head *bh) 3291 { 3292 block_t segment_count, segs_per_sec, secs_per_zone, segment_count_main; 3293 block_t total_sections, blocks_per_seg; 3294 struct f2fs_super_block *raw_super = (struct f2fs_super_block *) 3295 (bh->b_data + F2FS_SUPER_OFFSET); 3296 size_t crc_offset = 0; 3297 __u32 crc = 0; 3298 3299 if (le32_to_cpu(raw_super->magic) != F2FS_SUPER_MAGIC) { 3300 f2fs_info(sbi, "Magic Mismatch, valid(0x%x) - read(0x%x)", 3301 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic)); 3302 return -EINVAL; 3303 } 3304 3305 /* Check checksum_offset and crc in superblock */ 3306 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_SB_CHKSUM)) { 3307 crc_offset = le32_to_cpu(raw_super->checksum_offset); 3308 if (crc_offset != 3309 offsetof(struct f2fs_super_block, crc)) { 3310 f2fs_info(sbi, "Invalid SB checksum offset: %zu", 3311 crc_offset); 3312 return -EFSCORRUPTED; 3313 } 3314 crc = le32_to_cpu(raw_super->crc); 3315 if (!f2fs_crc_valid(sbi, crc, raw_super, crc_offset)) { 3316 f2fs_info(sbi, "Invalid SB checksum value: %u", crc); 3317 return -EFSCORRUPTED; 3318 } 3319 } 3320 3321 /* Currently, support only 4KB block size */ 3322 if (le32_to_cpu(raw_super->log_blocksize) != F2FS_BLKSIZE_BITS) { 3323 f2fs_info(sbi, "Invalid log_blocksize (%u), supports only %u", 3324 le32_to_cpu(raw_super->log_blocksize), 3325 F2FS_BLKSIZE_BITS); 3326 return -EFSCORRUPTED; 3327 } 3328 3329 /* check log blocks per segment */ 3330 if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) { 3331 f2fs_info(sbi, "Invalid log blocks per segment (%u)", 3332 le32_to_cpu(raw_super->log_blocks_per_seg)); 3333 return -EFSCORRUPTED; 3334 } 3335 3336 /* Currently, support 512/1024/2048/4096 bytes sector size */ 3337 if (le32_to_cpu(raw_super->log_sectorsize) > 3338 F2FS_MAX_LOG_SECTOR_SIZE || 3339 le32_to_cpu(raw_super->log_sectorsize) < 3340 F2FS_MIN_LOG_SECTOR_SIZE) { 3341 f2fs_info(sbi, "Invalid log sectorsize (%u)", 3342 le32_to_cpu(raw_super->log_sectorsize)); 3343 return -EFSCORRUPTED; 3344 } 3345 if (le32_to_cpu(raw_super->log_sectors_per_block) + 3346 le32_to_cpu(raw_super->log_sectorsize) != 3347 F2FS_MAX_LOG_SECTOR_SIZE) { 3348 f2fs_info(sbi, "Invalid log sectors per block(%u) log sectorsize(%u)", 3349 le32_to_cpu(raw_super->log_sectors_per_block), 3350 le32_to_cpu(raw_super->log_sectorsize)); 3351 return -EFSCORRUPTED; 3352 } 3353 3354 segment_count = le32_to_cpu(raw_super->segment_count); 3355 segment_count_main = le32_to_cpu(raw_super->segment_count_main); 3356 segs_per_sec = le32_to_cpu(raw_super->segs_per_sec); 3357 secs_per_zone = le32_to_cpu(raw_super->secs_per_zone); 3358 total_sections = le32_to_cpu(raw_super->section_count); 3359 3360 /* blocks_per_seg should be 512, given the above check */ 3361 blocks_per_seg = 1 << le32_to_cpu(raw_super->log_blocks_per_seg); 3362 3363 if (segment_count > F2FS_MAX_SEGMENT || 3364 segment_count < F2FS_MIN_SEGMENTS) { 3365 f2fs_info(sbi, "Invalid segment count (%u)", segment_count); 3366 return -EFSCORRUPTED; 3367 } 3368 3369 if (total_sections > segment_count_main || total_sections < 1 || 3370 segs_per_sec > segment_count || !segs_per_sec) { 3371 f2fs_info(sbi, "Invalid segment/section count (%u, %u x %u)", 3372 segment_count, total_sections, segs_per_sec); 3373 return -EFSCORRUPTED; 3374 } 3375 3376 if (segment_count_main != total_sections * segs_per_sec) { 3377 f2fs_info(sbi, "Invalid segment/section count (%u != %u * %u)", 3378 segment_count_main, total_sections, segs_per_sec); 3379 return -EFSCORRUPTED; 3380 } 3381 3382 if ((segment_count / segs_per_sec) < total_sections) { 3383 f2fs_info(sbi, "Small segment_count (%u < %u * %u)", 3384 segment_count, segs_per_sec, total_sections); 3385 return -EFSCORRUPTED; 3386 } 3387 3388 if (segment_count > (le64_to_cpu(raw_super->block_count) >> 9)) { 3389 f2fs_info(sbi, "Wrong segment_count / block_count (%u > %llu)", 3390 segment_count, le64_to_cpu(raw_super->block_count)); 3391 return -EFSCORRUPTED; 3392 } 3393 3394 if (RDEV(0).path[0]) { 3395 block_t dev_seg_count = le32_to_cpu(RDEV(0).total_segments); 3396 int i = 1; 3397 3398 while (i < MAX_DEVICES && RDEV(i).path[0]) { 3399 dev_seg_count += le32_to_cpu(RDEV(i).total_segments); 3400 i++; 3401 } 3402 if (segment_count != dev_seg_count) { 3403 f2fs_info(sbi, "Segment count (%u) mismatch with total segments from devices (%u)", 3404 segment_count, dev_seg_count); 3405 return -EFSCORRUPTED; 3406 } 3407 } else { 3408 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_BLKZONED) && 3409 !bdev_is_zoned(sbi->sb->s_bdev)) { 3410 f2fs_info(sbi, "Zoned block device path is missing"); 3411 return -EFSCORRUPTED; 3412 } 3413 } 3414 3415 if (secs_per_zone > total_sections || !secs_per_zone) { 3416 f2fs_info(sbi, "Wrong secs_per_zone / total_sections (%u, %u)", 3417 secs_per_zone, total_sections); 3418 return -EFSCORRUPTED; 3419 } 3420 if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION || 3421 raw_super->hot_ext_count > F2FS_MAX_EXTENSION || 3422 (le32_to_cpu(raw_super->extension_count) + 3423 raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) { 3424 f2fs_info(sbi, "Corrupted extension count (%u + %u > %u)", 3425 le32_to_cpu(raw_super->extension_count), 3426 raw_super->hot_ext_count, 3427 F2FS_MAX_EXTENSION); 3428 return -EFSCORRUPTED; 3429 } 3430 3431 if (le32_to_cpu(raw_super->cp_payload) >= 3432 (blocks_per_seg - F2FS_CP_PACKS - 3433 NR_CURSEG_PERSIST_TYPE)) { 3434 f2fs_info(sbi, "Insane cp_payload (%u >= %u)", 3435 le32_to_cpu(raw_super->cp_payload), 3436 blocks_per_seg - F2FS_CP_PACKS - 3437 NR_CURSEG_PERSIST_TYPE); 3438 return -EFSCORRUPTED; 3439 } 3440 3441 /* check reserved ino info */ 3442 if (le32_to_cpu(raw_super->node_ino) != 1 || 3443 le32_to_cpu(raw_super->meta_ino) != 2 || 3444 le32_to_cpu(raw_super->root_ino) != 3) { 3445 f2fs_info(sbi, "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)", 3446 le32_to_cpu(raw_super->node_ino), 3447 le32_to_cpu(raw_super->meta_ino), 3448 le32_to_cpu(raw_super->root_ino)); 3449 return -EFSCORRUPTED; 3450 } 3451 3452 /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */ 3453 if (sanity_check_area_boundary(sbi, bh)) 3454 return -EFSCORRUPTED; 3455 3456 return 0; 3457 } 3458 3459 int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi) 3460 { 3461 unsigned int total, fsmeta; 3462 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 3463 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 3464 unsigned int ovp_segments, reserved_segments; 3465 unsigned int main_segs, blocks_per_seg; 3466 unsigned int sit_segs, nat_segs; 3467 unsigned int sit_bitmap_size, nat_bitmap_size; 3468 unsigned int log_blocks_per_seg; 3469 unsigned int segment_count_main; 3470 unsigned int cp_pack_start_sum, cp_payload; 3471 block_t user_block_count, valid_user_blocks; 3472 block_t avail_node_count, valid_node_count; 3473 unsigned int nat_blocks, nat_bits_bytes, nat_bits_blocks; 3474 int i, j; 3475 3476 total = le32_to_cpu(raw_super->segment_count); 3477 fsmeta = le32_to_cpu(raw_super->segment_count_ckpt); 3478 sit_segs = le32_to_cpu(raw_super->segment_count_sit); 3479 fsmeta += sit_segs; 3480 nat_segs = le32_to_cpu(raw_super->segment_count_nat); 3481 fsmeta += nat_segs; 3482 fsmeta += le32_to_cpu(ckpt->rsvd_segment_count); 3483 fsmeta += le32_to_cpu(raw_super->segment_count_ssa); 3484 3485 if (unlikely(fsmeta >= total)) 3486 return 1; 3487 3488 ovp_segments = le32_to_cpu(ckpt->overprov_segment_count); 3489 reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count); 3490 3491 if (!f2fs_sb_has_readonly(sbi) && 3492 unlikely(fsmeta < F2FS_MIN_META_SEGMENTS || 3493 ovp_segments == 0 || reserved_segments == 0)) { 3494 f2fs_err(sbi, "Wrong layout: check mkfs.f2fs version"); 3495 return 1; 3496 } 3497 user_block_count = le64_to_cpu(ckpt->user_block_count); 3498 segment_count_main = le32_to_cpu(raw_super->segment_count_main) + 3499 (f2fs_sb_has_readonly(sbi) ? 1 : 0); 3500 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); 3501 if (!user_block_count || user_block_count >= 3502 segment_count_main << log_blocks_per_seg) { 3503 f2fs_err(sbi, "Wrong user_block_count: %u", 3504 user_block_count); 3505 return 1; 3506 } 3507 3508 valid_user_blocks = le64_to_cpu(ckpt->valid_block_count); 3509 if (valid_user_blocks > user_block_count) { 3510 f2fs_err(sbi, "Wrong valid_user_blocks: %u, user_block_count: %u", 3511 valid_user_blocks, user_block_count); 3512 return 1; 3513 } 3514 3515 valid_node_count = le32_to_cpu(ckpt->valid_node_count); 3516 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM; 3517 if (valid_node_count > avail_node_count) { 3518 f2fs_err(sbi, "Wrong valid_node_count: %u, avail_node_count: %u", 3519 valid_node_count, avail_node_count); 3520 return 1; 3521 } 3522 3523 main_segs = le32_to_cpu(raw_super->segment_count_main); 3524 blocks_per_seg = sbi->blocks_per_seg; 3525 3526 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { 3527 if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs || 3528 le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg) 3529 return 1; 3530 3531 if (f2fs_sb_has_readonly(sbi)) 3532 goto check_data; 3533 3534 for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) { 3535 if (le32_to_cpu(ckpt->cur_node_segno[i]) == 3536 le32_to_cpu(ckpt->cur_node_segno[j])) { 3537 f2fs_err(sbi, "Node segment (%u, %u) has the same segno: %u", 3538 i, j, 3539 le32_to_cpu(ckpt->cur_node_segno[i])); 3540 return 1; 3541 } 3542 } 3543 } 3544 check_data: 3545 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) { 3546 if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs || 3547 le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg) 3548 return 1; 3549 3550 if (f2fs_sb_has_readonly(sbi)) 3551 goto skip_cross; 3552 3553 for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) { 3554 if (le32_to_cpu(ckpt->cur_data_segno[i]) == 3555 le32_to_cpu(ckpt->cur_data_segno[j])) { 3556 f2fs_err(sbi, "Data segment (%u, %u) has the same segno: %u", 3557 i, j, 3558 le32_to_cpu(ckpt->cur_data_segno[i])); 3559 return 1; 3560 } 3561 } 3562 } 3563 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { 3564 for (j = 0; j < NR_CURSEG_DATA_TYPE; j++) { 3565 if (le32_to_cpu(ckpt->cur_node_segno[i]) == 3566 le32_to_cpu(ckpt->cur_data_segno[j])) { 3567 f2fs_err(sbi, "Node segment (%u) and Data segment (%u) has the same segno: %u", 3568 i, j, 3569 le32_to_cpu(ckpt->cur_node_segno[i])); 3570 return 1; 3571 } 3572 } 3573 } 3574 skip_cross: 3575 sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize); 3576 nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize); 3577 3578 if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 || 3579 nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) { 3580 f2fs_err(sbi, "Wrong bitmap size: sit: %u, nat:%u", 3581 sit_bitmap_size, nat_bitmap_size); 3582 return 1; 3583 } 3584 3585 cp_pack_start_sum = __start_sum_addr(sbi); 3586 cp_payload = __cp_payload(sbi); 3587 if (cp_pack_start_sum < cp_payload + 1 || 3588 cp_pack_start_sum > blocks_per_seg - 1 - 3589 NR_CURSEG_PERSIST_TYPE) { 3590 f2fs_err(sbi, "Wrong cp_pack_start_sum: %u", 3591 cp_pack_start_sum); 3592 return 1; 3593 } 3594 3595 if (__is_set_ckpt_flags(ckpt, CP_LARGE_NAT_BITMAP_FLAG) && 3596 le32_to_cpu(ckpt->checksum_offset) != CP_MIN_CHKSUM_OFFSET) { 3597 f2fs_warn(sbi, "using deprecated layout of large_nat_bitmap, " 3598 "please run fsck v1.13.0 or higher to repair, chksum_offset: %u, " 3599 "fixed with patch: \"f2fs-tools: relocate chksum_offset for large_nat_bitmap feature\"", 3600 le32_to_cpu(ckpt->checksum_offset)); 3601 return 1; 3602 } 3603 3604 nat_blocks = nat_segs << log_blocks_per_seg; 3605 nat_bits_bytes = nat_blocks / BITS_PER_BYTE; 3606 nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8); 3607 if (__is_set_ckpt_flags(ckpt, CP_NAT_BITS_FLAG) && 3608 (cp_payload + F2FS_CP_PACKS + 3609 NR_CURSEG_PERSIST_TYPE + nat_bits_blocks >= blocks_per_seg)) { 3610 f2fs_warn(sbi, "Insane cp_payload: %u, nat_bits_blocks: %u)", 3611 cp_payload, nat_bits_blocks); 3612 return 1; 3613 } 3614 3615 if (unlikely(f2fs_cp_error(sbi))) { 3616 f2fs_err(sbi, "A bug case: need to run fsck"); 3617 return 1; 3618 } 3619 return 0; 3620 } 3621 3622 static void init_sb_info(struct f2fs_sb_info *sbi) 3623 { 3624 struct f2fs_super_block *raw_super = sbi->raw_super; 3625 int i; 3626 3627 sbi->log_sectors_per_block = 3628 le32_to_cpu(raw_super->log_sectors_per_block); 3629 sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize); 3630 sbi->blocksize = 1 << sbi->log_blocksize; 3631 sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); 3632 sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg; 3633 sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec); 3634 sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone); 3635 sbi->total_sections = le32_to_cpu(raw_super->section_count); 3636 sbi->total_node_count = 3637 (le32_to_cpu(raw_super->segment_count_nat) / 2) 3638 * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK; 3639 F2FS_ROOT_INO(sbi) = le32_to_cpu(raw_super->root_ino); 3640 F2FS_NODE_INO(sbi) = le32_to_cpu(raw_super->node_ino); 3641 F2FS_META_INO(sbi) = le32_to_cpu(raw_super->meta_ino); 3642 sbi->cur_victim_sec = NULL_SECNO; 3643 sbi->gc_mode = GC_NORMAL; 3644 sbi->next_victim_seg[BG_GC] = NULL_SEGNO; 3645 sbi->next_victim_seg[FG_GC] = NULL_SEGNO; 3646 sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH; 3647 sbi->migration_granularity = sbi->segs_per_sec; 3648 sbi->seq_file_ra_mul = MIN_RA_MUL; 3649 sbi->max_fragment_chunk = DEF_FRAGMENT_SIZE; 3650 sbi->max_fragment_hole = DEF_FRAGMENT_SIZE; 3651 spin_lock_init(&sbi->gc_remaining_trials_lock); 3652 atomic64_set(&sbi->current_atomic_write, 0); 3653 3654 sbi->dir_level = DEF_DIR_LEVEL; 3655 sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL; 3656 sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL; 3657 sbi->interval_time[DISCARD_TIME] = DEF_IDLE_INTERVAL; 3658 sbi->interval_time[GC_TIME] = DEF_IDLE_INTERVAL; 3659 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_INTERVAL; 3660 sbi->interval_time[UMOUNT_DISCARD_TIMEOUT] = 3661 DEF_UMOUNT_DISCARD_TIMEOUT; 3662 clear_sbi_flag(sbi, SBI_NEED_FSCK); 3663 3664 for (i = 0; i < NR_COUNT_TYPE; i++) 3665 atomic_set(&sbi->nr_pages[i], 0); 3666 3667 for (i = 0; i < META; i++) 3668 atomic_set(&sbi->wb_sync_req[i], 0); 3669 3670 INIT_LIST_HEAD(&sbi->s_list); 3671 mutex_init(&sbi->umount_mutex); 3672 init_f2fs_rwsem(&sbi->io_order_lock); 3673 spin_lock_init(&sbi->cp_lock); 3674 3675 sbi->dirty_device = 0; 3676 spin_lock_init(&sbi->dev_lock); 3677 3678 init_f2fs_rwsem(&sbi->sb_lock); 3679 init_f2fs_rwsem(&sbi->pin_sem); 3680 } 3681 3682 static int init_percpu_info(struct f2fs_sb_info *sbi) 3683 { 3684 int err; 3685 3686 err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL); 3687 if (err) 3688 return err; 3689 3690 err = percpu_counter_init(&sbi->rf_node_block_count, 0, GFP_KERNEL); 3691 if (err) 3692 goto err_valid_block; 3693 3694 err = percpu_counter_init(&sbi->total_valid_inode_count, 0, 3695 GFP_KERNEL); 3696 if (err) 3697 goto err_node_block; 3698 return 0; 3699 3700 err_node_block: 3701 percpu_counter_destroy(&sbi->rf_node_block_count); 3702 err_valid_block: 3703 percpu_counter_destroy(&sbi->alloc_valid_block_count); 3704 return err; 3705 } 3706 3707 #ifdef CONFIG_BLK_DEV_ZONED 3708 3709 struct f2fs_report_zones_args { 3710 struct f2fs_sb_info *sbi; 3711 struct f2fs_dev_info *dev; 3712 }; 3713 3714 static int f2fs_report_zone_cb(struct blk_zone *zone, unsigned int idx, 3715 void *data) 3716 { 3717 struct f2fs_report_zones_args *rz_args = data; 3718 block_t unusable_blocks = (zone->len - zone->capacity) >> 3719 F2FS_LOG_SECTORS_PER_BLOCK; 3720 3721 if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL) 3722 return 0; 3723 3724 set_bit(idx, rz_args->dev->blkz_seq); 3725 if (!rz_args->sbi->unusable_blocks_per_sec) { 3726 rz_args->sbi->unusable_blocks_per_sec = unusable_blocks; 3727 return 0; 3728 } 3729 if (rz_args->sbi->unusable_blocks_per_sec != unusable_blocks) { 3730 f2fs_err(rz_args->sbi, "F2FS supports single zone capacity\n"); 3731 return -EINVAL; 3732 } 3733 return 0; 3734 } 3735 3736 static int init_blkz_info(struct f2fs_sb_info *sbi, int devi) 3737 { 3738 struct block_device *bdev = FDEV(devi).bdev; 3739 sector_t nr_sectors = bdev_nr_sectors(bdev); 3740 struct f2fs_report_zones_args rep_zone_arg; 3741 u64 zone_sectors; 3742 int ret; 3743 3744 if (!f2fs_sb_has_blkzoned(sbi)) 3745 return 0; 3746 3747 zone_sectors = bdev_zone_sectors(bdev); 3748 if (!is_power_of_2(zone_sectors)) { 3749 f2fs_err(sbi, "F2FS does not support non power of 2 zone sizes\n"); 3750 return -EINVAL; 3751 } 3752 3753 if (sbi->blocks_per_blkz && sbi->blocks_per_blkz != 3754 SECTOR_TO_BLOCK(zone_sectors)) 3755 return -EINVAL; 3756 sbi->blocks_per_blkz = SECTOR_TO_BLOCK(zone_sectors); 3757 if (sbi->log_blocks_per_blkz && sbi->log_blocks_per_blkz != 3758 __ilog2_u32(sbi->blocks_per_blkz)) 3759 return -EINVAL; 3760 sbi->log_blocks_per_blkz = __ilog2_u32(sbi->blocks_per_blkz); 3761 FDEV(devi).nr_blkz = SECTOR_TO_BLOCK(nr_sectors) >> 3762 sbi->log_blocks_per_blkz; 3763 if (nr_sectors & (zone_sectors - 1)) 3764 FDEV(devi).nr_blkz++; 3765 3766 FDEV(devi).blkz_seq = f2fs_kvzalloc(sbi, 3767 BITS_TO_LONGS(FDEV(devi).nr_blkz) 3768 * sizeof(unsigned long), 3769 GFP_KERNEL); 3770 if (!FDEV(devi).blkz_seq) 3771 return -ENOMEM; 3772 3773 rep_zone_arg.sbi = sbi; 3774 rep_zone_arg.dev = &FDEV(devi); 3775 3776 ret = blkdev_report_zones(bdev, 0, BLK_ALL_ZONES, f2fs_report_zone_cb, 3777 &rep_zone_arg); 3778 if (ret < 0) 3779 return ret; 3780 return 0; 3781 } 3782 #endif 3783 3784 /* 3785 * Read f2fs raw super block. 3786 * Because we have two copies of super block, so read both of them 3787 * to get the first valid one. If any one of them is broken, we pass 3788 * them recovery flag back to the caller. 3789 */ 3790 static int read_raw_super_block(struct f2fs_sb_info *sbi, 3791 struct f2fs_super_block **raw_super, 3792 int *valid_super_block, int *recovery) 3793 { 3794 struct super_block *sb = sbi->sb; 3795 int block; 3796 struct buffer_head *bh; 3797 struct f2fs_super_block *super; 3798 int err = 0; 3799 3800 super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL); 3801 if (!super) 3802 return -ENOMEM; 3803 3804 for (block = 0; block < 2; block++) { 3805 bh = sb_bread(sb, block); 3806 if (!bh) { 3807 f2fs_err(sbi, "Unable to read %dth superblock", 3808 block + 1); 3809 err = -EIO; 3810 *recovery = 1; 3811 continue; 3812 } 3813 3814 /* sanity checking of raw super */ 3815 err = sanity_check_raw_super(sbi, bh); 3816 if (err) { 3817 f2fs_err(sbi, "Can't find valid F2FS filesystem in %dth superblock", 3818 block + 1); 3819 brelse(bh); 3820 *recovery = 1; 3821 continue; 3822 } 3823 3824 if (!*raw_super) { 3825 memcpy(super, bh->b_data + F2FS_SUPER_OFFSET, 3826 sizeof(*super)); 3827 *valid_super_block = block; 3828 *raw_super = super; 3829 } 3830 brelse(bh); 3831 } 3832 3833 /* No valid superblock */ 3834 if (!*raw_super) 3835 kfree(super); 3836 else 3837 err = 0; 3838 3839 return err; 3840 } 3841 3842 int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover) 3843 { 3844 struct buffer_head *bh; 3845 __u32 crc = 0; 3846 int err; 3847 3848 if ((recover && f2fs_readonly(sbi->sb)) || 3849 bdev_read_only(sbi->sb->s_bdev)) { 3850 set_sbi_flag(sbi, SBI_NEED_SB_WRITE); 3851 return -EROFS; 3852 } 3853 3854 /* we should update superblock crc here */ 3855 if (!recover && f2fs_sb_has_sb_chksum(sbi)) { 3856 crc = f2fs_crc32(sbi, F2FS_RAW_SUPER(sbi), 3857 offsetof(struct f2fs_super_block, crc)); 3858 F2FS_RAW_SUPER(sbi)->crc = cpu_to_le32(crc); 3859 } 3860 3861 /* write back-up superblock first */ 3862 bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1); 3863 if (!bh) 3864 return -EIO; 3865 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi)); 3866 brelse(bh); 3867 3868 /* if we are in recovery path, skip writing valid superblock */ 3869 if (recover || err) 3870 return err; 3871 3872 /* write current valid superblock */ 3873 bh = sb_bread(sbi->sb, sbi->valid_super_block); 3874 if (!bh) 3875 return -EIO; 3876 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi)); 3877 brelse(bh); 3878 return err; 3879 } 3880 3881 void f2fs_handle_stop(struct f2fs_sb_info *sbi, unsigned char reason) 3882 { 3883 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 3884 int err; 3885 3886 f2fs_down_write(&sbi->sb_lock); 3887 3888 if (raw_super->s_stop_reason[reason] < ((1 << BITS_PER_BYTE) - 1)) 3889 raw_super->s_stop_reason[reason]++; 3890 3891 err = f2fs_commit_super(sbi, false); 3892 if (err) 3893 f2fs_err(sbi, "f2fs_commit_super fails to record reason:%u err:%d", 3894 reason, err); 3895 f2fs_up_write(&sbi->sb_lock); 3896 } 3897 3898 static void f2fs_save_errors(struct f2fs_sb_info *sbi, unsigned char flag) 3899 { 3900 spin_lock(&sbi->error_lock); 3901 if (!test_bit(flag, (unsigned long *)sbi->errors)) { 3902 set_bit(flag, (unsigned long *)sbi->errors); 3903 sbi->error_dirty = true; 3904 } 3905 spin_unlock(&sbi->error_lock); 3906 } 3907 3908 static bool f2fs_update_errors(struct f2fs_sb_info *sbi) 3909 { 3910 bool need_update = false; 3911 3912 spin_lock(&sbi->error_lock); 3913 if (sbi->error_dirty) { 3914 memcpy(F2FS_RAW_SUPER(sbi)->s_errors, sbi->errors, 3915 MAX_F2FS_ERRORS); 3916 sbi->error_dirty = false; 3917 need_update = true; 3918 } 3919 spin_unlock(&sbi->error_lock); 3920 3921 return need_update; 3922 } 3923 3924 void f2fs_handle_error(struct f2fs_sb_info *sbi, unsigned char error) 3925 { 3926 int err; 3927 3928 f2fs_save_errors(sbi, error); 3929 3930 f2fs_down_write(&sbi->sb_lock); 3931 3932 if (!f2fs_update_errors(sbi)) 3933 goto out_unlock; 3934 3935 err = f2fs_commit_super(sbi, false); 3936 if (err) 3937 f2fs_err(sbi, "f2fs_commit_super fails to record errors:%u, err:%d", 3938 error, err); 3939 out_unlock: 3940 f2fs_up_write(&sbi->sb_lock); 3941 } 3942 3943 static int f2fs_scan_devices(struct f2fs_sb_info *sbi) 3944 { 3945 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 3946 unsigned int max_devices = MAX_DEVICES; 3947 unsigned int logical_blksize; 3948 int i; 3949 3950 /* Initialize single device information */ 3951 if (!RDEV(0).path[0]) { 3952 if (!bdev_is_zoned(sbi->sb->s_bdev)) 3953 return 0; 3954 max_devices = 1; 3955 } 3956 3957 /* 3958 * Initialize multiple devices information, or single 3959 * zoned block device information. 3960 */ 3961 sbi->devs = f2fs_kzalloc(sbi, 3962 array_size(max_devices, 3963 sizeof(struct f2fs_dev_info)), 3964 GFP_KERNEL); 3965 if (!sbi->devs) 3966 return -ENOMEM; 3967 3968 logical_blksize = bdev_logical_block_size(sbi->sb->s_bdev); 3969 sbi->aligned_blksize = true; 3970 3971 for (i = 0; i < max_devices; i++) { 3972 3973 if (i > 0 && !RDEV(i).path[0]) 3974 break; 3975 3976 if (max_devices == 1) { 3977 /* Single zoned block device mount */ 3978 FDEV(0).bdev = 3979 blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev, 3980 sbi->sb->s_mode, sbi->sb->s_type); 3981 } else { 3982 /* Multi-device mount */ 3983 memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN); 3984 FDEV(i).total_segments = 3985 le32_to_cpu(RDEV(i).total_segments); 3986 if (i == 0) { 3987 FDEV(i).start_blk = 0; 3988 FDEV(i).end_blk = FDEV(i).start_blk + 3989 (FDEV(i).total_segments << 3990 sbi->log_blocks_per_seg) - 1 + 3991 le32_to_cpu(raw_super->segment0_blkaddr); 3992 } else { 3993 FDEV(i).start_blk = FDEV(i - 1).end_blk + 1; 3994 FDEV(i).end_blk = FDEV(i).start_blk + 3995 (FDEV(i).total_segments << 3996 sbi->log_blocks_per_seg) - 1; 3997 } 3998 FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path, 3999 sbi->sb->s_mode, sbi->sb->s_type); 4000 } 4001 if (IS_ERR(FDEV(i).bdev)) 4002 return PTR_ERR(FDEV(i).bdev); 4003 4004 /* to release errored devices */ 4005 sbi->s_ndevs = i + 1; 4006 4007 if (logical_blksize != bdev_logical_block_size(FDEV(i).bdev)) 4008 sbi->aligned_blksize = false; 4009 4010 #ifdef CONFIG_BLK_DEV_ZONED 4011 if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM && 4012 !f2fs_sb_has_blkzoned(sbi)) { 4013 f2fs_err(sbi, "Zoned block device feature not enabled"); 4014 return -EINVAL; 4015 } 4016 if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) { 4017 if (init_blkz_info(sbi, i)) { 4018 f2fs_err(sbi, "Failed to initialize F2FS blkzone information"); 4019 return -EINVAL; 4020 } 4021 if (max_devices == 1) 4022 break; 4023 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)", 4024 i, FDEV(i).path, 4025 FDEV(i).total_segments, 4026 FDEV(i).start_blk, FDEV(i).end_blk, 4027 bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ? 4028 "Host-aware" : "Host-managed"); 4029 continue; 4030 } 4031 #endif 4032 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x", 4033 i, FDEV(i).path, 4034 FDEV(i).total_segments, 4035 FDEV(i).start_blk, FDEV(i).end_blk); 4036 } 4037 f2fs_info(sbi, 4038 "IO Block Size: %8d KB", F2FS_IO_SIZE_KB(sbi)); 4039 return 0; 4040 } 4041 4042 static int f2fs_setup_casefold(struct f2fs_sb_info *sbi) 4043 { 4044 #if IS_ENABLED(CONFIG_UNICODE) 4045 if (f2fs_sb_has_casefold(sbi) && !sbi->sb->s_encoding) { 4046 const struct f2fs_sb_encodings *encoding_info; 4047 struct unicode_map *encoding; 4048 __u16 encoding_flags; 4049 4050 encoding_info = f2fs_sb_read_encoding(sbi->raw_super); 4051 if (!encoding_info) { 4052 f2fs_err(sbi, 4053 "Encoding requested by superblock is unknown"); 4054 return -EINVAL; 4055 } 4056 4057 encoding_flags = le16_to_cpu(sbi->raw_super->s_encoding_flags); 4058 encoding = utf8_load(encoding_info->version); 4059 if (IS_ERR(encoding)) { 4060 f2fs_err(sbi, 4061 "can't mount with superblock charset: %s-%u.%u.%u " 4062 "not supported by the kernel. flags: 0x%x.", 4063 encoding_info->name, 4064 unicode_major(encoding_info->version), 4065 unicode_minor(encoding_info->version), 4066 unicode_rev(encoding_info->version), 4067 encoding_flags); 4068 return PTR_ERR(encoding); 4069 } 4070 f2fs_info(sbi, "Using encoding defined by superblock: " 4071 "%s-%u.%u.%u with flags 0x%hx", encoding_info->name, 4072 unicode_major(encoding_info->version), 4073 unicode_minor(encoding_info->version), 4074 unicode_rev(encoding_info->version), 4075 encoding_flags); 4076 4077 sbi->sb->s_encoding = encoding; 4078 sbi->sb->s_encoding_flags = encoding_flags; 4079 } 4080 #else 4081 if (f2fs_sb_has_casefold(sbi)) { 4082 f2fs_err(sbi, "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE"); 4083 return -EINVAL; 4084 } 4085 #endif 4086 return 0; 4087 } 4088 4089 static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi) 4090 { 4091 /* adjust parameters according to the volume size */ 4092 if (MAIN_SEGS(sbi) <= SMALL_VOLUME_SEGMENTS) { 4093 if (f2fs_block_unit_discard(sbi)) 4094 SM_I(sbi)->dcc_info->discard_granularity = 4095 MIN_DISCARD_GRANULARITY; 4096 SM_I(sbi)->ipu_policy = 1 << F2FS_IPU_FORCE | 4097 1 << F2FS_IPU_HONOR_OPU_WRITE; 4098 } 4099 4100 sbi->readdir_ra = true; 4101 } 4102 4103 static int f2fs_fill_super(struct super_block *sb, void *data, int silent) 4104 { 4105 struct f2fs_sb_info *sbi; 4106 struct f2fs_super_block *raw_super; 4107 struct inode *root; 4108 int err; 4109 bool skip_recovery = false, need_fsck = false; 4110 char *options = NULL; 4111 int recovery, i, valid_super_block; 4112 struct curseg_info *seg_i; 4113 int retry_cnt = 1; 4114 4115 try_onemore: 4116 err = -EINVAL; 4117 raw_super = NULL; 4118 valid_super_block = -1; 4119 recovery = 0; 4120 4121 /* allocate memory for f2fs-specific super block info */ 4122 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL); 4123 if (!sbi) 4124 return -ENOMEM; 4125 4126 sbi->sb = sb; 4127 4128 /* initialize locks within allocated memory */ 4129 init_f2fs_rwsem(&sbi->gc_lock); 4130 mutex_init(&sbi->writepages); 4131 init_f2fs_rwsem(&sbi->cp_global_sem); 4132 init_f2fs_rwsem(&sbi->node_write); 4133 init_f2fs_rwsem(&sbi->node_change); 4134 spin_lock_init(&sbi->stat_lock); 4135 init_f2fs_rwsem(&sbi->cp_rwsem); 4136 init_f2fs_rwsem(&sbi->quota_sem); 4137 init_waitqueue_head(&sbi->cp_wait); 4138 spin_lock_init(&sbi->error_lock); 4139 4140 for (i = 0; i < NR_INODE_TYPE; i++) { 4141 INIT_LIST_HEAD(&sbi->inode_list[i]); 4142 spin_lock_init(&sbi->inode_lock[i]); 4143 } 4144 mutex_init(&sbi->flush_lock); 4145 4146 /* Load the checksum driver */ 4147 sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0); 4148 if (IS_ERR(sbi->s_chksum_driver)) { 4149 f2fs_err(sbi, "Cannot load crc32 driver."); 4150 err = PTR_ERR(sbi->s_chksum_driver); 4151 sbi->s_chksum_driver = NULL; 4152 goto free_sbi; 4153 } 4154 4155 /* set a block size */ 4156 if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) { 4157 f2fs_err(sbi, "unable to set blocksize"); 4158 goto free_sbi; 4159 } 4160 4161 err = read_raw_super_block(sbi, &raw_super, &valid_super_block, 4162 &recovery); 4163 if (err) 4164 goto free_sbi; 4165 4166 sb->s_fs_info = sbi; 4167 sbi->raw_super = raw_super; 4168 4169 memcpy(sbi->errors, raw_super->s_errors, MAX_F2FS_ERRORS); 4170 4171 /* precompute checksum seed for metadata */ 4172 if (f2fs_sb_has_inode_chksum(sbi)) 4173 sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid, 4174 sizeof(raw_super->uuid)); 4175 4176 default_options(sbi); 4177 /* parse mount options */ 4178 options = kstrdup((const char *)data, GFP_KERNEL); 4179 if (data && !options) { 4180 err = -ENOMEM; 4181 goto free_sb_buf; 4182 } 4183 4184 err = parse_options(sb, options, false); 4185 if (err) 4186 goto free_options; 4187 4188 sb->s_maxbytes = max_file_blocks(NULL) << 4189 le32_to_cpu(raw_super->log_blocksize); 4190 sb->s_max_links = F2FS_LINK_MAX; 4191 4192 err = f2fs_setup_casefold(sbi); 4193 if (err) 4194 goto free_options; 4195 4196 #ifdef CONFIG_QUOTA 4197 sb->dq_op = &f2fs_quota_operations; 4198 sb->s_qcop = &f2fs_quotactl_ops; 4199 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ; 4200 4201 if (f2fs_sb_has_quota_ino(sbi)) { 4202 for (i = 0; i < MAXQUOTAS; i++) { 4203 if (f2fs_qf_ino(sbi->sb, i)) 4204 sbi->nquota_files++; 4205 } 4206 } 4207 #endif 4208 4209 sb->s_op = &f2fs_sops; 4210 #ifdef CONFIG_FS_ENCRYPTION 4211 sb->s_cop = &f2fs_cryptops; 4212 #endif 4213 #ifdef CONFIG_FS_VERITY 4214 sb->s_vop = &f2fs_verityops; 4215 #endif 4216 sb->s_xattr = f2fs_xattr_handlers; 4217 sb->s_export_op = &f2fs_export_ops; 4218 sb->s_magic = F2FS_SUPER_MAGIC; 4219 sb->s_time_gran = 1; 4220 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) | 4221 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0); 4222 memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid)); 4223 sb->s_iflags |= SB_I_CGROUPWB; 4224 4225 /* init f2fs-specific super block info */ 4226 sbi->valid_super_block = valid_super_block; 4227 4228 /* disallow all the data/node/meta page writes */ 4229 set_sbi_flag(sbi, SBI_POR_DOING); 4230 4231 err = f2fs_init_write_merge_io(sbi); 4232 if (err) 4233 goto free_bio_info; 4234 4235 init_sb_info(sbi); 4236 4237 err = f2fs_init_iostat(sbi); 4238 if (err) 4239 goto free_bio_info; 4240 4241 err = init_percpu_info(sbi); 4242 if (err) 4243 goto free_iostat; 4244 4245 if (F2FS_IO_ALIGNED(sbi)) { 4246 sbi->write_io_dummy = 4247 mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0); 4248 if (!sbi->write_io_dummy) { 4249 err = -ENOMEM; 4250 goto free_percpu; 4251 } 4252 } 4253 4254 /* init per sbi slab cache */ 4255 err = f2fs_init_xattr_caches(sbi); 4256 if (err) 4257 goto free_io_dummy; 4258 err = f2fs_init_page_array_cache(sbi); 4259 if (err) 4260 goto free_xattr_cache; 4261 4262 /* get an inode for meta space */ 4263 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi)); 4264 if (IS_ERR(sbi->meta_inode)) { 4265 f2fs_err(sbi, "Failed to read F2FS meta data inode"); 4266 err = PTR_ERR(sbi->meta_inode); 4267 goto free_page_array_cache; 4268 } 4269 4270 err = f2fs_get_valid_checkpoint(sbi); 4271 if (err) { 4272 f2fs_err(sbi, "Failed to get valid F2FS checkpoint"); 4273 goto free_meta_inode; 4274 } 4275 4276 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_QUOTA_NEED_FSCK_FLAG)) 4277 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 4278 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_DISABLED_QUICK_FLAG)) { 4279 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK); 4280 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL; 4281 } 4282 4283 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FSCK_FLAG)) 4284 set_sbi_flag(sbi, SBI_NEED_FSCK); 4285 4286 /* Initialize device list */ 4287 err = f2fs_scan_devices(sbi); 4288 if (err) { 4289 f2fs_err(sbi, "Failed to find devices"); 4290 goto free_devices; 4291 } 4292 4293 err = f2fs_init_post_read_wq(sbi); 4294 if (err) { 4295 f2fs_err(sbi, "Failed to initialize post read workqueue"); 4296 goto free_devices; 4297 } 4298 4299 sbi->total_valid_node_count = 4300 le32_to_cpu(sbi->ckpt->valid_node_count); 4301 percpu_counter_set(&sbi->total_valid_inode_count, 4302 le32_to_cpu(sbi->ckpt->valid_inode_count)); 4303 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count); 4304 sbi->total_valid_block_count = 4305 le64_to_cpu(sbi->ckpt->valid_block_count); 4306 sbi->last_valid_block_count = sbi->total_valid_block_count; 4307 sbi->reserved_blocks = 0; 4308 sbi->current_reserved_blocks = 0; 4309 limit_reserve_root(sbi); 4310 adjust_unusable_cap_perc(sbi); 4311 4312 f2fs_init_extent_cache_info(sbi); 4313 4314 f2fs_init_ino_entry_info(sbi); 4315 4316 f2fs_init_fsync_node_info(sbi); 4317 4318 /* setup checkpoint request control and start checkpoint issue thread */ 4319 f2fs_init_ckpt_req_control(sbi); 4320 if (!f2fs_readonly(sb) && !test_opt(sbi, DISABLE_CHECKPOINT) && 4321 test_opt(sbi, MERGE_CHECKPOINT)) { 4322 err = f2fs_start_ckpt_thread(sbi); 4323 if (err) { 4324 f2fs_err(sbi, 4325 "Failed to start F2FS issue_checkpoint_thread (%d)", 4326 err); 4327 goto stop_ckpt_thread; 4328 } 4329 } 4330 4331 /* setup f2fs internal modules */ 4332 err = f2fs_build_segment_manager(sbi); 4333 if (err) { 4334 f2fs_err(sbi, "Failed to initialize F2FS segment manager (%d)", 4335 err); 4336 goto free_sm; 4337 } 4338 err = f2fs_build_node_manager(sbi); 4339 if (err) { 4340 f2fs_err(sbi, "Failed to initialize F2FS node manager (%d)", 4341 err); 4342 goto free_nm; 4343 } 4344 4345 err = adjust_reserved_segment(sbi); 4346 if (err) 4347 goto free_nm; 4348 4349 /* For write statistics */ 4350 sbi->sectors_written_start = f2fs_get_sectors_written(sbi); 4351 4352 /* Read accumulated write IO statistics if exists */ 4353 seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE); 4354 if (__exist_node_summaries(sbi)) 4355 sbi->kbytes_written = 4356 le64_to_cpu(seg_i->journal->info.kbytes_written); 4357 4358 f2fs_build_gc_manager(sbi); 4359 4360 err = f2fs_build_stats(sbi); 4361 if (err) 4362 goto free_nm; 4363 4364 /* get an inode for node space */ 4365 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi)); 4366 if (IS_ERR(sbi->node_inode)) { 4367 f2fs_err(sbi, "Failed to read node inode"); 4368 err = PTR_ERR(sbi->node_inode); 4369 goto free_stats; 4370 } 4371 4372 /* read root inode and dentry */ 4373 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi)); 4374 if (IS_ERR(root)) { 4375 f2fs_err(sbi, "Failed to read root inode"); 4376 err = PTR_ERR(root); 4377 goto free_node_inode; 4378 } 4379 if (!S_ISDIR(root->i_mode) || !root->i_blocks || 4380 !root->i_size || !root->i_nlink) { 4381 iput(root); 4382 err = -EINVAL; 4383 goto free_node_inode; 4384 } 4385 4386 sb->s_root = d_make_root(root); /* allocate root dentry */ 4387 if (!sb->s_root) { 4388 err = -ENOMEM; 4389 goto free_node_inode; 4390 } 4391 4392 err = f2fs_init_compress_inode(sbi); 4393 if (err) 4394 goto free_root_inode; 4395 4396 err = f2fs_register_sysfs(sbi); 4397 if (err) 4398 goto free_compress_inode; 4399 4400 #ifdef CONFIG_QUOTA 4401 /* Enable quota usage during mount */ 4402 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) { 4403 err = f2fs_enable_quotas(sb); 4404 if (err) 4405 f2fs_err(sbi, "Cannot turn on quotas: error %d", err); 4406 } 4407 #endif 4408 /* if there are any orphan inodes, free them */ 4409 err = f2fs_recover_orphan_inodes(sbi); 4410 if (err) 4411 goto free_meta; 4412 4413 if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG))) 4414 goto reset_checkpoint; 4415 4416 /* recover fsynced data */ 4417 if (!test_opt(sbi, DISABLE_ROLL_FORWARD) && 4418 !test_opt(sbi, NORECOVERY)) { 4419 /* 4420 * mount should be failed, when device has readonly mode, and 4421 * previous checkpoint was not done by clean system shutdown. 4422 */ 4423 if (f2fs_hw_is_readonly(sbi)) { 4424 if (!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) { 4425 err = f2fs_recover_fsync_data(sbi, true); 4426 if (err > 0) { 4427 err = -EROFS; 4428 f2fs_err(sbi, "Need to recover fsync data, but " 4429 "write access unavailable, please try " 4430 "mount w/ disable_roll_forward or norecovery"); 4431 } 4432 if (err < 0) 4433 goto free_meta; 4434 } 4435 f2fs_info(sbi, "write access unavailable, skipping recovery"); 4436 goto reset_checkpoint; 4437 } 4438 4439 if (need_fsck) 4440 set_sbi_flag(sbi, SBI_NEED_FSCK); 4441 4442 if (skip_recovery) 4443 goto reset_checkpoint; 4444 4445 err = f2fs_recover_fsync_data(sbi, false); 4446 if (err < 0) { 4447 if (err != -ENOMEM) 4448 skip_recovery = true; 4449 need_fsck = true; 4450 f2fs_err(sbi, "Cannot recover all fsync data errno=%d", 4451 err); 4452 goto free_meta; 4453 } 4454 } else { 4455 err = f2fs_recover_fsync_data(sbi, true); 4456 4457 if (!f2fs_readonly(sb) && err > 0) { 4458 err = -EINVAL; 4459 f2fs_err(sbi, "Need to recover fsync data"); 4460 goto free_meta; 4461 } 4462 } 4463 4464 /* 4465 * If the f2fs is not readonly and fsync data recovery succeeds, 4466 * check zoned block devices' write pointer consistency. 4467 */ 4468 if (!err && !f2fs_readonly(sb) && f2fs_sb_has_blkzoned(sbi)) { 4469 err = f2fs_check_write_pointer(sbi); 4470 if (err) 4471 goto free_meta; 4472 } 4473 4474 reset_checkpoint: 4475 f2fs_init_inmem_curseg(sbi); 4476 4477 /* f2fs_recover_fsync_data() cleared this already */ 4478 clear_sbi_flag(sbi, SBI_POR_DOING); 4479 4480 if (test_opt(sbi, DISABLE_CHECKPOINT)) { 4481 err = f2fs_disable_checkpoint(sbi); 4482 if (err) 4483 goto sync_free_meta; 4484 } else if (is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)) { 4485 f2fs_enable_checkpoint(sbi); 4486 } 4487 4488 /* 4489 * If filesystem is not mounted as read-only then 4490 * do start the gc_thread. 4491 */ 4492 if ((F2FS_OPTION(sbi).bggc_mode != BGGC_MODE_OFF || 4493 test_opt(sbi, GC_MERGE)) && !f2fs_readonly(sb)) { 4494 /* After POR, we can run background GC thread.*/ 4495 err = f2fs_start_gc_thread(sbi); 4496 if (err) 4497 goto sync_free_meta; 4498 } 4499 kvfree(options); 4500 4501 /* recover broken superblock */ 4502 if (recovery) { 4503 err = f2fs_commit_super(sbi, true); 4504 f2fs_info(sbi, "Try to recover %dth superblock, ret: %d", 4505 sbi->valid_super_block ? 1 : 2, err); 4506 } 4507 4508 f2fs_join_shrinker(sbi); 4509 4510 f2fs_tuning_parameters(sbi); 4511 4512 f2fs_notice(sbi, "Mounted with checkpoint version = %llx", 4513 cur_cp_version(F2FS_CKPT(sbi))); 4514 f2fs_update_time(sbi, CP_TIME); 4515 f2fs_update_time(sbi, REQ_TIME); 4516 clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK); 4517 return 0; 4518 4519 sync_free_meta: 4520 /* safe to flush all the data */ 4521 sync_filesystem(sbi->sb); 4522 retry_cnt = 0; 4523 4524 free_meta: 4525 #ifdef CONFIG_QUOTA 4526 f2fs_truncate_quota_inode_pages(sb); 4527 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) 4528 f2fs_quota_off_umount(sbi->sb); 4529 #endif 4530 /* 4531 * Some dirty meta pages can be produced by f2fs_recover_orphan_inodes() 4532 * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg() 4533 * followed by f2fs_write_checkpoint() through f2fs_write_node_pages(), which 4534 * falls into an infinite loop in f2fs_sync_meta_pages(). 4535 */ 4536 truncate_inode_pages_final(META_MAPPING(sbi)); 4537 /* evict some inodes being cached by GC */ 4538 evict_inodes(sb); 4539 f2fs_unregister_sysfs(sbi); 4540 free_compress_inode: 4541 f2fs_destroy_compress_inode(sbi); 4542 free_root_inode: 4543 dput(sb->s_root); 4544 sb->s_root = NULL; 4545 free_node_inode: 4546 f2fs_release_ino_entry(sbi, true); 4547 truncate_inode_pages_final(NODE_MAPPING(sbi)); 4548 iput(sbi->node_inode); 4549 sbi->node_inode = NULL; 4550 free_stats: 4551 f2fs_destroy_stats(sbi); 4552 free_nm: 4553 /* stop discard thread before destroying node manager */ 4554 f2fs_stop_discard_thread(sbi); 4555 f2fs_destroy_node_manager(sbi); 4556 free_sm: 4557 f2fs_destroy_segment_manager(sbi); 4558 stop_ckpt_thread: 4559 f2fs_stop_ckpt_thread(sbi); 4560 f2fs_destroy_post_read_wq(sbi); 4561 free_devices: 4562 destroy_device_list(sbi); 4563 kvfree(sbi->ckpt); 4564 free_meta_inode: 4565 make_bad_inode(sbi->meta_inode); 4566 iput(sbi->meta_inode); 4567 sbi->meta_inode = NULL; 4568 free_page_array_cache: 4569 f2fs_destroy_page_array_cache(sbi); 4570 free_xattr_cache: 4571 f2fs_destroy_xattr_caches(sbi); 4572 free_io_dummy: 4573 mempool_destroy(sbi->write_io_dummy); 4574 free_percpu: 4575 destroy_percpu_info(sbi); 4576 free_iostat: 4577 f2fs_destroy_iostat(sbi); 4578 free_bio_info: 4579 for (i = 0; i < NR_PAGE_TYPE; i++) 4580 kvfree(sbi->write_io[i]); 4581 4582 #if IS_ENABLED(CONFIG_UNICODE) 4583 utf8_unload(sb->s_encoding); 4584 sb->s_encoding = NULL; 4585 #endif 4586 free_options: 4587 #ifdef CONFIG_QUOTA 4588 for (i = 0; i < MAXQUOTAS; i++) 4589 kfree(F2FS_OPTION(sbi).s_qf_names[i]); 4590 #endif 4591 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy); 4592 kvfree(options); 4593 free_sb_buf: 4594 kfree(raw_super); 4595 free_sbi: 4596 if (sbi->s_chksum_driver) 4597 crypto_free_shash(sbi->s_chksum_driver); 4598 kfree(sbi); 4599 4600 /* give only one another chance */ 4601 if (retry_cnt > 0 && skip_recovery) { 4602 retry_cnt--; 4603 shrink_dcache_sb(sb); 4604 goto try_onemore; 4605 } 4606 return err; 4607 } 4608 4609 static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags, 4610 const char *dev_name, void *data) 4611 { 4612 return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super); 4613 } 4614 4615 static void kill_f2fs_super(struct super_block *sb) 4616 { 4617 if (sb->s_root) { 4618 struct f2fs_sb_info *sbi = F2FS_SB(sb); 4619 4620 set_sbi_flag(sbi, SBI_IS_CLOSE); 4621 f2fs_stop_gc_thread(sbi); 4622 f2fs_stop_discard_thread(sbi); 4623 4624 #ifdef CONFIG_F2FS_FS_COMPRESSION 4625 /* 4626 * latter evict_inode() can bypass checking and invalidating 4627 * compress inode cache. 4628 */ 4629 if (test_opt(sbi, COMPRESS_CACHE)) 4630 truncate_inode_pages_final(COMPRESS_MAPPING(sbi)); 4631 #endif 4632 4633 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) || 4634 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) { 4635 struct cp_control cpc = { 4636 .reason = CP_UMOUNT, 4637 }; 4638 f2fs_write_checkpoint(sbi, &cpc); 4639 } 4640 4641 if (is_sbi_flag_set(sbi, SBI_IS_RECOVERED) && f2fs_readonly(sb)) 4642 sb->s_flags &= ~SB_RDONLY; 4643 } 4644 kill_block_super(sb); 4645 } 4646 4647 static struct file_system_type f2fs_fs_type = { 4648 .owner = THIS_MODULE, 4649 .name = "f2fs", 4650 .mount = f2fs_mount, 4651 .kill_sb = kill_f2fs_super, 4652 .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP, 4653 }; 4654 MODULE_ALIAS_FS("f2fs"); 4655 4656 static int __init init_inodecache(void) 4657 { 4658 f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache", 4659 sizeof(struct f2fs_inode_info), 0, 4660 SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL); 4661 return f2fs_inode_cachep ? 0 : -ENOMEM; 4662 } 4663 4664 static void destroy_inodecache(void) 4665 { 4666 /* 4667 * Make sure all delayed rcu free inodes are flushed before we 4668 * destroy cache. 4669 */ 4670 rcu_barrier(); 4671 kmem_cache_destroy(f2fs_inode_cachep); 4672 } 4673 4674 static int __init init_f2fs_fs(void) 4675 { 4676 int err; 4677 4678 if (PAGE_SIZE != F2FS_BLKSIZE) { 4679 printk("F2FS not supported on PAGE_SIZE(%lu) != %d\n", 4680 PAGE_SIZE, F2FS_BLKSIZE); 4681 return -EINVAL; 4682 } 4683 4684 err = init_inodecache(); 4685 if (err) 4686 goto fail; 4687 err = f2fs_create_node_manager_caches(); 4688 if (err) 4689 goto free_inodecache; 4690 err = f2fs_create_segment_manager_caches(); 4691 if (err) 4692 goto free_node_manager_caches; 4693 err = f2fs_create_checkpoint_caches(); 4694 if (err) 4695 goto free_segment_manager_caches; 4696 err = f2fs_create_recovery_cache(); 4697 if (err) 4698 goto free_checkpoint_caches; 4699 err = f2fs_create_extent_cache(); 4700 if (err) 4701 goto free_recovery_cache; 4702 err = f2fs_create_garbage_collection_cache(); 4703 if (err) 4704 goto free_extent_cache; 4705 err = f2fs_init_sysfs(); 4706 if (err) 4707 goto free_garbage_collection_cache; 4708 err = register_shrinker(&f2fs_shrinker_info, "f2fs-shrinker"); 4709 if (err) 4710 goto free_sysfs; 4711 err = register_filesystem(&f2fs_fs_type); 4712 if (err) 4713 goto free_shrinker; 4714 f2fs_create_root_stats(); 4715 err = f2fs_init_post_read_processing(); 4716 if (err) 4717 goto free_root_stats; 4718 err = f2fs_init_iostat_processing(); 4719 if (err) 4720 goto free_post_read; 4721 err = f2fs_init_bio_entry_cache(); 4722 if (err) 4723 goto free_iostat; 4724 err = f2fs_init_bioset(); 4725 if (err) 4726 goto free_bio_enrty_cache; 4727 err = f2fs_init_compress_mempool(); 4728 if (err) 4729 goto free_bioset; 4730 err = f2fs_init_compress_cache(); 4731 if (err) 4732 goto free_compress_mempool; 4733 err = f2fs_create_casefold_cache(); 4734 if (err) 4735 goto free_compress_cache; 4736 return 0; 4737 free_compress_cache: 4738 f2fs_destroy_compress_cache(); 4739 free_compress_mempool: 4740 f2fs_destroy_compress_mempool(); 4741 free_bioset: 4742 f2fs_destroy_bioset(); 4743 free_bio_enrty_cache: 4744 f2fs_destroy_bio_entry_cache(); 4745 free_iostat: 4746 f2fs_destroy_iostat_processing(); 4747 free_post_read: 4748 f2fs_destroy_post_read_processing(); 4749 free_root_stats: 4750 f2fs_destroy_root_stats(); 4751 unregister_filesystem(&f2fs_fs_type); 4752 free_shrinker: 4753 unregister_shrinker(&f2fs_shrinker_info); 4754 free_sysfs: 4755 f2fs_exit_sysfs(); 4756 free_garbage_collection_cache: 4757 f2fs_destroy_garbage_collection_cache(); 4758 free_extent_cache: 4759 f2fs_destroy_extent_cache(); 4760 free_recovery_cache: 4761 f2fs_destroy_recovery_cache(); 4762 free_checkpoint_caches: 4763 f2fs_destroy_checkpoint_caches(); 4764 free_segment_manager_caches: 4765 f2fs_destroy_segment_manager_caches(); 4766 free_node_manager_caches: 4767 f2fs_destroy_node_manager_caches(); 4768 free_inodecache: 4769 destroy_inodecache(); 4770 fail: 4771 return err; 4772 } 4773 4774 static void __exit exit_f2fs_fs(void) 4775 { 4776 f2fs_destroy_casefold_cache(); 4777 f2fs_destroy_compress_cache(); 4778 f2fs_destroy_compress_mempool(); 4779 f2fs_destroy_bioset(); 4780 f2fs_destroy_bio_entry_cache(); 4781 f2fs_destroy_iostat_processing(); 4782 f2fs_destroy_post_read_processing(); 4783 f2fs_destroy_root_stats(); 4784 unregister_filesystem(&f2fs_fs_type); 4785 unregister_shrinker(&f2fs_shrinker_info); 4786 f2fs_exit_sysfs(); 4787 f2fs_destroy_garbage_collection_cache(); 4788 f2fs_destroy_extent_cache(); 4789 f2fs_destroy_recovery_cache(); 4790 f2fs_destroy_checkpoint_caches(); 4791 f2fs_destroy_segment_manager_caches(); 4792 f2fs_destroy_node_manager_caches(); 4793 destroy_inodecache(); 4794 } 4795 4796 module_init(init_f2fs_fs) 4797 module_exit(exit_f2fs_fs) 4798 4799 MODULE_AUTHOR("Samsung Electronics's Praesto Team"); 4800 MODULE_DESCRIPTION("Flash Friendly File System"); 4801 MODULE_LICENSE("GPL"); 4802 MODULE_SOFTDEP("pre: crc32"); 4803 4804