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/statfs.h> 12 #include <linux/buffer_head.h> 13 #include <linux/backing-dev.h> 14 #include <linux/kthread.h> 15 #include <linux/parser.h> 16 #include <linux/mount.h> 17 #include <linux/seq_file.h> 18 #include <linux/proc_fs.h> 19 #include <linux/random.h> 20 #include <linux/exportfs.h> 21 #include <linux/blkdev.h> 22 #include <linux/quotaops.h> 23 #include <linux/f2fs_fs.h> 24 #include <linux/sysfs.h> 25 #include <linux/quota.h> 26 #include <linux/unicode.h> 27 #include <linux/part_stat.h> 28 #include <linux/zstd.h> 29 #include <linux/lz4.h> 30 31 #include "f2fs.h" 32 #include "node.h" 33 #include "segment.h" 34 #include "xattr.h" 35 #include "gc.h" 36 #include "iostat.h" 37 38 #define CREATE_TRACE_POINTS 39 #include <trace/events/f2fs.h> 40 41 static struct kmem_cache *f2fs_inode_cachep; 42 43 #ifdef CONFIG_F2FS_FAULT_INJECTION 44 45 const char *f2fs_fault_name[FAULT_MAX] = { 46 [FAULT_KMALLOC] = "kmalloc", 47 [FAULT_KVMALLOC] = "kvmalloc", 48 [FAULT_PAGE_ALLOC] = "page alloc", 49 [FAULT_PAGE_GET] = "page get", 50 [FAULT_ALLOC_NID] = "alloc nid", 51 [FAULT_ORPHAN] = "orphan", 52 [FAULT_BLOCK] = "no more block", 53 [FAULT_DIR_DEPTH] = "too big dir depth", 54 [FAULT_EVICT_INODE] = "evict_inode fail", 55 [FAULT_TRUNCATE] = "truncate fail", 56 [FAULT_READ_IO] = "read IO error", 57 [FAULT_CHECKPOINT] = "checkpoint error", 58 [FAULT_DISCARD] = "discard error", 59 [FAULT_WRITE_IO] = "write IO error", 60 [FAULT_SLAB_ALLOC] = "slab alloc", 61 [FAULT_DQUOT_INIT] = "dquot initialize", 62 }; 63 64 void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate, 65 unsigned int type) 66 { 67 struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info; 68 69 if (rate) { 70 atomic_set(&ffi->inject_ops, 0); 71 ffi->inject_rate = rate; 72 } 73 74 if (type) 75 ffi->inject_type = type; 76 77 if (!rate && !type) 78 memset(ffi, 0, sizeof(struct f2fs_fault_info)); 79 } 80 #endif 81 82 /* f2fs-wide shrinker description */ 83 static struct shrinker f2fs_shrinker_info = { 84 .scan_objects = f2fs_shrink_scan, 85 .count_objects = f2fs_shrink_count, 86 .seeks = DEFAULT_SEEKS, 87 }; 88 89 enum { 90 Opt_gc_background, 91 Opt_disable_roll_forward, 92 Opt_norecovery, 93 Opt_discard, 94 Opt_nodiscard, 95 Opt_noheap, 96 Opt_heap, 97 Opt_user_xattr, 98 Opt_nouser_xattr, 99 Opt_acl, 100 Opt_noacl, 101 Opt_active_logs, 102 Opt_disable_ext_identify, 103 Opt_inline_xattr, 104 Opt_noinline_xattr, 105 Opt_inline_xattr_size, 106 Opt_inline_data, 107 Opt_inline_dentry, 108 Opt_noinline_dentry, 109 Opt_flush_merge, 110 Opt_noflush_merge, 111 Opt_nobarrier, 112 Opt_fastboot, 113 Opt_extent_cache, 114 Opt_noextent_cache, 115 Opt_noinline_data, 116 Opt_data_flush, 117 Opt_reserve_root, 118 Opt_resgid, 119 Opt_resuid, 120 Opt_mode, 121 Opt_io_size_bits, 122 Opt_fault_injection, 123 Opt_fault_type, 124 Opt_lazytime, 125 Opt_nolazytime, 126 Opt_quota, 127 Opt_noquota, 128 Opt_usrquota, 129 Opt_grpquota, 130 Opt_prjquota, 131 Opt_usrjquota, 132 Opt_grpjquota, 133 Opt_prjjquota, 134 Opt_offusrjquota, 135 Opt_offgrpjquota, 136 Opt_offprjjquota, 137 Opt_jqfmt_vfsold, 138 Opt_jqfmt_vfsv0, 139 Opt_jqfmt_vfsv1, 140 Opt_whint, 141 Opt_alloc, 142 Opt_fsync, 143 Opt_test_dummy_encryption, 144 Opt_inlinecrypt, 145 Opt_checkpoint_disable, 146 Opt_checkpoint_disable_cap, 147 Opt_checkpoint_disable_cap_perc, 148 Opt_checkpoint_enable, 149 Opt_checkpoint_merge, 150 Opt_nocheckpoint_merge, 151 Opt_compress_algorithm, 152 Opt_compress_log_size, 153 Opt_compress_extension, 154 Opt_nocompress_extension, 155 Opt_compress_chksum, 156 Opt_compress_mode, 157 Opt_compress_cache, 158 Opt_atgc, 159 Opt_gc_merge, 160 Opt_nogc_merge, 161 Opt_discard_unit, 162 Opt_err, 163 }; 164 165 static match_table_t f2fs_tokens = { 166 {Opt_gc_background, "background_gc=%s"}, 167 {Opt_disable_roll_forward, "disable_roll_forward"}, 168 {Opt_norecovery, "norecovery"}, 169 {Opt_discard, "discard"}, 170 {Opt_nodiscard, "nodiscard"}, 171 {Opt_noheap, "no_heap"}, 172 {Opt_heap, "heap"}, 173 {Opt_user_xattr, "user_xattr"}, 174 {Opt_nouser_xattr, "nouser_xattr"}, 175 {Opt_acl, "acl"}, 176 {Opt_noacl, "noacl"}, 177 {Opt_active_logs, "active_logs=%u"}, 178 {Opt_disable_ext_identify, "disable_ext_identify"}, 179 {Opt_inline_xattr, "inline_xattr"}, 180 {Opt_noinline_xattr, "noinline_xattr"}, 181 {Opt_inline_xattr_size, "inline_xattr_size=%u"}, 182 {Opt_inline_data, "inline_data"}, 183 {Opt_inline_dentry, "inline_dentry"}, 184 {Opt_noinline_dentry, "noinline_dentry"}, 185 {Opt_flush_merge, "flush_merge"}, 186 {Opt_noflush_merge, "noflush_merge"}, 187 {Opt_nobarrier, "nobarrier"}, 188 {Opt_fastboot, "fastboot"}, 189 {Opt_extent_cache, "extent_cache"}, 190 {Opt_noextent_cache, "noextent_cache"}, 191 {Opt_noinline_data, "noinline_data"}, 192 {Opt_data_flush, "data_flush"}, 193 {Opt_reserve_root, "reserve_root=%u"}, 194 {Opt_resgid, "resgid=%u"}, 195 {Opt_resuid, "resuid=%u"}, 196 {Opt_mode, "mode=%s"}, 197 {Opt_io_size_bits, "io_bits=%u"}, 198 {Opt_fault_injection, "fault_injection=%u"}, 199 {Opt_fault_type, "fault_type=%u"}, 200 {Opt_lazytime, "lazytime"}, 201 {Opt_nolazytime, "nolazytime"}, 202 {Opt_quota, "quota"}, 203 {Opt_noquota, "noquota"}, 204 {Opt_usrquota, "usrquota"}, 205 {Opt_grpquota, "grpquota"}, 206 {Opt_prjquota, "prjquota"}, 207 {Opt_usrjquota, "usrjquota=%s"}, 208 {Opt_grpjquota, "grpjquota=%s"}, 209 {Opt_prjjquota, "prjjquota=%s"}, 210 {Opt_offusrjquota, "usrjquota="}, 211 {Opt_offgrpjquota, "grpjquota="}, 212 {Opt_offprjjquota, "prjjquota="}, 213 {Opt_jqfmt_vfsold, "jqfmt=vfsold"}, 214 {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"}, 215 {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"}, 216 {Opt_whint, "whint_mode=%s"}, 217 {Opt_alloc, "alloc_mode=%s"}, 218 {Opt_fsync, "fsync_mode=%s"}, 219 {Opt_test_dummy_encryption, "test_dummy_encryption=%s"}, 220 {Opt_test_dummy_encryption, "test_dummy_encryption"}, 221 {Opt_inlinecrypt, "inlinecrypt"}, 222 {Opt_checkpoint_disable, "checkpoint=disable"}, 223 {Opt_checkpoint_disable_cap, "checkpoint=disable:%u"}, 224 {Opt_checkpoint_disable_cap_perc, "checkpoint=disable:%u%%"}, 225 {Opt_checkpoint_enable, "checkpoint=enable"}, 226 {Opt_checkpoint_merge, "checkpoint_merge"}, 227 {Opt_nocheckpoint_merge, "nocheckpoint_merge"}, 228 {Opt_compress_algorithm, "compress_algorithm=%s"}, 229 {Opt_compress_log_size, "compress_log_size=%u"}, 230 {Opt_compress_extension, "compress_extension=%s"}, 231 {Opt_nocompress_extension, "nocompress_extension=%s"}, 232 {Opt_compress_chksum, "compress_chksum"}, 233 {Opt_compress_mode, "compress_mode=%s"}, 234 {Opt_compress_cache, "compress_cache"}, 235 {Opt_atgc, "atgc"}, 236 {Opt_gc_merge, "gc_merge"}, 237 {Opt_nogc_merge, "nogc_merge"}, 238 {Opt_discard_unit, "discard_unit=%s"}, 239 {Opt_err, NULL}, 240 }; 241 242 void f2fs_printk(struct f2fs_sb_info *sbi, const char *fmt, ...) 243 { 244 struct va_format vaf; 245 va_list args; 246 int level; 247 248 va_start(args, fmt); 249 250 level = printk_get_level(fmt); 251 vaf.fmt = printk_skip_level(fmt); 252 vaf.va = &args; 253 printk("%c%cF2FS-fs (%s): %pV\n", 254 KERN_SOH_ASCII, level, sbi->sb->s_id, &vaf); 255 256 va_end(args); 257 } 258 259 #ifdef CONFIG_UNICODE 260 static const struct f2fs_sb_encodings { 261 __u16 magic; 262 char *name; 263 char *version; 264 } f2fs_sb_encoding_map[] = { 265 {F2FS_ENC_UTF8_12_1, "utf8", "12.1.0"}, 266 }; 267 268 static int f2fs_sb_read_encoding(const struct f2fs_super_block *sb, 269 const struct f2fs_sb_encodings **encoding, 270 __u16 *flags) 271 { 272 __u16 magic = le16_to_cpu(sb->s_encoding); 273 int i; 274 275 for (i = 0; i < ARRAY_SIZE(f2fs_sb_encoding_map); i++) 276 if (magic == f2fs_sb_encoding_map[i].magic) 277 break; 278 279 if (i >= ARRAY_SIZE(f2fs_sb_encoding_map)) 280 return -EINVAL; 281 282 *encoding = &f2fs_sb_encoding_map[i]; 283 *flags = le16_to_cpu(sb->s_encoding_flags); 284 285 return 0; 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 if (!f2fs_cf_name_slab) 294 return -ENOMEM; 295 return 0; 296 } 297 298 static void f2fs_destroy_casefold_cache(void) 299 { 300 kmem_cache_destroy(f2fs_cf_name_slab); 301 } 302 #else 303 static int __init f2fs_create_casefold_cache(void) { return 0; } 304 static void f2fs_destroy_casefold_cache(void) { } 305 #endif 306 307 static inline void limit_reserve_root(struct f2fs_sb_info *sbi) 308 { 309 block_t limit = min((sbi->user_block_count << 1) / 1000, 310 sbi->user_block_count - sbi->reserved_blocks); 311 312 /* limit is 0.2% */ 313 if (test_opt(sbi, RESERVE_ROOT) && 314 F2FS_OPTION(sbi).root_reserved_blocks > limit) { 315 F2FS_OPTION(sbi).root_reserved_blocks = limit; 316 f2fs_info(sbi, "Reduce reserved blocks for root = %u", 317 F2FS_OPTION(sbi).root_reserved_blocks); 318 } 319 if (!test_opt(sbi, RESERVE_ROOT) && 320 (!uid_eq(F2FS_OPTION(sbi).s_resuid, 321 make_kuid(&init_user_ns, F2FS_DEF_RESUID)) || 322 !gid_eq(F2FS_OPTION(sbi).s_resgid, 323 make_kgid(&init_user_ns, F2FS_DEF_RESGID)))) 324 f2fs_info(sbi, "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root", 325 from_kuid_munged(&init_user_ns, 326 F2FS_OPTION(sbi).s_resuid), 327 from_kgid_munged(&init_user_ns, 328 F2FS_OPTION(sbi).s_resgid)); 329 } 330 331 static inline void adjust_unusable_cap_perc(struct f2fs_sb_info *sbi) 332 { 333 if (!F2FS_OPTION(sbi).unusable_cap_perc) 334 return; 335 336 if (F2FS_OPTION(sbi).unusable_cap_perc == 100) 337 F2FS_OPTION(sbi).unusable_cap = sbi->user_block_count; 338 else 339 F2FS_OPTION(sbi).unusable_cap = (sbi->user_block_count / 100) * 340 F2FS_OPTION(sbi).unusable_cap_perc; 341 342 f2fs_info(sbi, "Adjust unusable cap for checkpoint=disable = %u / %u%%", 343 F2FS_OPTION(sbi).unusable_cap, 344 F2FS_OPTION(sbi).unusable_cap_perc); 345 } 346 347 static void init_once(void *foo) 348 { 349 struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo; 350 351 inode_init_once(&fi->vfs_inode); 352 } 353 354 #ifdef CONFIG_QUOTA 355 static const char * const quotatypes[] = INITQFNAMES; 356 #define QTYPE2NAME(t) (quotatypes[t]) 357 static int f2fs_set_qf_name(struct super_block *sb, int qtype, 358 substring_t *args) 359 { 360 struct f2fs_sb_info *sbi = F2FS_SB(sb); 361 char *qname; 362 int ret = -EINVAL; 363 364 if (sb_any_quota_loaded(sb) && !F2FS_OPTION(sbi).s_qf_names[qtype]) { 365 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on"); 366 return -EINVAL; 367 } 368 if (f2fs_sb_has_quota_ino(sbi)) { 369 f2fs_info(sbi, "QUOTA feature is enabled, so ignore qf_name"); 370 return 0; 371 } 372 373 qname = match_strdup(args); 374 if (!qname) { 375 f2fs_err(sbi, "Not enough memory for storing quotafile name"); 376 return -ENOMEM; 377 } 378 if (F2FS_OPTION(sbi).s_qf_names[qtype]) { 379 if (strcmp(F2FS_OPTION(sbi).s_qf_names[qtype], qname) == 0) 380 ret = 0; 381 else 382 f2fs_err(sbi, "%s quota file already specified", 383 QTYPE2NAME(qtype)); 384 goto errout; 385 } 386 if (strchr(qname, '/')) { 387 f2fs_err(sbi, "quotafile must be on filesystem root"); 388 goto errout; 389 } 390 F2FS_OPTION(sbi).s_qf_names[qtype] = qname; 391 set_opt(sbi, QUOTA); 392 return 0; 393 errout: 394 kfree(qname); 395 return ret; 396 } 397 398 static int f2fs_clear_qf_name(struct super_block *sb, int qtype) 399 { 400 struct f2fs_sb_info *sbi = F2FS_SB(sb); 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 kfree(F2FS_OPTION(sbi).s_qf_names[qtype]); 407 F2FS_OPTION(sbi).s_qf_names[qtype] = NULL; 408 return 0; 409 } 410 411 static int f2fs_check_quota_options(struct f2fs_sb_info *sbi) 412 { 413 /* 414 * We do the test below only for project quotas. 'usrquota' and 415 * 'grpquota' mount options are allowed even without quota feature 416 * to support legacy quotas in quota files. 417 */ 418 if (test_opt(sbi, PRJQUOTA) && !f2fs_sb_has_project_quota(sbi)) { 419 f2fs_err(sbi, "Project quota feature not enabled. Cannot enable project quota enforcement."); 420 return -1; 421 } 422 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] || 423 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] || 424 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) { 425 if (test_opt(sbi, USRQUOTA) && 426 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]) 427 clear_opt(sbi, USRQUOTA); 428 429 if (test_opt(sbi, GRPQUOTA) && 430 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]) 431 clear_opt(sbi, GRPQUOTA); 432 433 if (test_opt(sbi, PRJQUOTA) && 434 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) 435 clear_opt(sbi, PRJQUOTA); 436 437 if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) || 438 test_opt(sbi, PRJQUOTA)) { 439 f2fs_err(sbi, "old and new quota format mixing"); 440 return -1; 441 } 442 443 if (!F2FS_OPTION(sbi).s_jquota_fmt) { 444 f2fs_err(sbi, "journaled quota format not specified"); 445 return -1; 446 } 447 } 448 449 if (f2fs_sb_has_quota_ino(sbi) && F2FS_OPTION(sbi).s_jquota_fmt) { 450 f2fs_info(sbi, "QUOTA feature is enabled, so ignore jquota_fmt"); 451 F2FS_OPTION(sbi).s_jquota_fmt = 0; 452 } 453 return 0; 454 } 455 #endif 456 457 static int f2fs_set_test_dummy_encryption(struct super_block *sb, 458 const char *opt, 459 const substring_t *arg, 460 bool is_remount) 461 { 462 struct f2fs_sb_info *sbi = F2FS_SB(sb); 463 #ifdef CONFIG_FS_ENCRYPTION 464 int err; 465 466 if (!f2fs_sb_has_encrypt(sbi)) { 467 f2fs_err(sbi, "Encrypt feature is off"); 468 return -EINVAL; 469 } 470 471 /* 472 * This mount option is just for testing, and it's not worthwhile to 473 * implement the extra complexity (e.g. RCU protection) that would be 474 * needed to allow it to be set or changed during remount. We do allow 475 * it to be specified during remount, but only if there is no change. 476 */ 477 if (is_remount && !F2FS_OPTION(sbi).dummy_enc_policy.policy) { 478 f2fs_warn(sbi, "Can't set test_dummy_encryption on remount"); 479 return -EINVAL; 480 } 481 err = fscrypt_set_test_dummy_encryption( 482 sb, arg->from, &F2FS_OPTION(sbi).dummy_enc_policy); 483 if (err) { 484 if (err == -EEXIST) 485 f2fs_warn(sbi, 486 "Can't change test_dummy_encryption on remount"); 487 else if (err == -EINVAL) 488 f2fs_warn(sbi, "Value of option \"%s\" is unrecognized", 489 opt); 490 else 491 f2fs_warn(sbi, "Error processing option \"%s\" [%d]", 492 opt, err); 493 return -EINVAL; 494 } 495 f2fs_warn(sbi, "Test dummy encryption mode enabled"); 496 #else 497 f2fs_warn(sbi, "Test dummy encryption mount option ignored"); 498 #endif 499 return 0; 500 } 501 502 #ifdef CONFIG_F2FS_FS_COMPRESSION 503 /* 504 * 1. The same extension name cannot not appear in both compress and non-compress extension 505 * at the same time. 506 * 2. If the compress extension specifies all files, the types specified by the non-compress 507 * extension will be treated as special cases and will not be compressed. 508 * 3. Don't allow the non-compress extension specifies all files. 509 */ 510 static int f2fs_test_compress_extension(struct f2fs_sb_info *sbi) 511 { 512 unsigned char (*ext)[F2FS_EXTENSION_LEN]; 513 unsigned char (*noext)[F2FS_EXTENSION_LEN]; 514 int ext_cnt, noext_cnt, index = 0, no_index = 0; 515 516 ext = F2FS_OPTION(sbi).extensions; 517 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt; 518 noext = F2FS_OPTION(sbi).noextensions; 519 noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt; 520 521 if (!noext_cnt) 522 return 0; 523 524 for (no_index = 0; no_index < noext_cnt; no_index++) { 525 if (!strcasecmp("*", noext[no_index])) { 526 f2fs_info(sbi, "Don't allow the nocompress extension specifies all files"); 527 return -EINVAL; 528 } 529 for (index = 0; index < ext_cnt; index++) { 530 if (!strcasecmp(ext[index], noext[no_index])) { 531 f2fs_info(sbi, "Don't allow the same extension %s appear in both compress and nocompress extension", 532 ext[index]); 533 return -EINVAL; 534 } 535 } 536 } 537 return 0; 538 } 539 540 #ifdef CONFIG_F2FS_FS_LZ4 541 static int f2fs_set_lz4hc_level(struct f2fs_sb_info *sbi, const char *str) 542 { 543 #ifdef CONFIG_F2FS_FS_LZ4HC 544 unsigned int level; 545 #endif 546 547 if (strlen(str) == 3) { 548 F2FS_OPTION(sbi).compress_level = 0; 549 return 0; 550 } 551 552 #ifdef CONFIG_F2FS_FS_LZ4HC 553 str += 3; 554 555 if (str[0] != ':') { 556 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>"); 557 return -EINVAL; 558 } 559 if (kstrtouint(str + 1, 10, &level)) 560 return -EINVAL; 561 562 if (level < LZ4HC_MIN_CLEVEL || level > LZ4HC_MAX_CLEVEL) { 563 f2fs_info(sbi, "invalid lz4hc compress level: %d", level); 564 return -EINVAL; 565 } 566 567 F2FS_OPTION(sbi).compress_level = level; 568 return 0; 569 #else 570 f2fs_info(sbi, "kernel doesn't support lz4hc compression"); 571 return -EINVAL; 572 #endif 573 } 574 #endif 575 576 #ifdef CONFIG_F2FS_FS_ZSTD 577 static int f2fs_set_zstd_level(struct f2fs_sb_info *sbi, const char *str) 578 { 579 unsigned int level; 580 int len = 4; 581 582 if (strlen(str) == len) { 583 F2FS_OPTION(sbi).compress_level = 0; 584 return 0; 585 } 586 587 str += len; 588 589 if (str[0] != ':') { 590 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>"); 591 return -EINVAL; 592 } 593 if (kstrtouint(str + 1, 10, &level)) 594 return -EINVAL; 595 596 if (!level || level > zstd_max_clevel()) { 597 f2fs_info(sbi, "invalid zstd compress level: %d", level); 598 return -EINVAL; 599 } 600 601 F2FS_OPTION(sbi).compress_level = level; 602 return 0; 603 } 604 #endif 605 #endif 606 607 static int parse_options(struct super_block *sb, char *options, bool is_remount) 608 { 609 struct f2fs_sb_info *sbi = F2FS_SB(sb); 610 substring_t args[MAX_OPT_ARGS]; 611 #ifdef CONFIG_F2FS_FS_COMPRESSION 612 unsigned char (*ext)[F2FS_EXTENSION_LEN]; 613 unsigned char (*noext)[F2FS_EXTENSION_LEN]; 614 int ext_cnt, noext_cnt; 615 #endif 616 char *p, *name; 617 int arg = 0; 618 kuid_t uid; 619 kgid_t gid; 620 int ret; 621 622 if (!options) 623 goto default_check; 624 625 while ((p = strsep(&options, ",")) != NULL) { 626 int token; 627 628 if (!*p) 629 continue; 630 /* 631 * Initialize args struct so we know whether arg was 632 * found; some options take optional arguments. 633 */ 634 args[0].to = args[0].from = NULL; 635 token = match_token(p, f2fs_tokens, args); 636 637 switch (token) { 638 case Opt_gc_background: 639 name = match_strdup(&args[0]); 640 641 if (!name) 642 return -ENOMEM; 643 if (!strcmp(name, "on")) { 644 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON; 645 } else if (!strcmp(name, "off")) { 646 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_OFF; 647 } else if (!strcmp(name, "sync")) { 648 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_SYNC; 649 } else { 650 kfree(name); 651 return -EINVAL; 652 } 653 kfree(name); 654 break; 655 case Opt_disable_roll_forward: 656 set_opt(sbi, DISABLE_ROLL_FORWARD); 657 break; 658 case Opt_norecovery: 659 /* this option mounts f2fs with ro */ 660 set_opt(sbi, NORECOVERY); 661 if (!f2fs_readonly(sb)) 662 return -EINVAL; 663 break; 664 case Opt_discard: 665 if (!f2fs_hw_support_discard(sbi)) { 666 f2fs_warn(sbi, "device does not support discard"); 667 break; 668 } 669 set_opt(sbi, DISCARD); 670 break; 671 case Opt_nodiscard: 672 if (f2fs_hw_should_discard(sbi)) { 673 f2fs_warn(sbi, "discard is required for zoned block devices"); 674 return -EINVAL; 675 } 676 clear_opt(sbi, DISCARD); 677 break; 678 case Opt_noheap: 679 set_opt(sbi, NOHEAP); 680 break; 681 case Opt_heap: 682 clear_opt(sbi, NOHEAP); 683 break; 684 #ifdef CONFIG_F2FS_FS_XATTR 685 case Opt_user_xattr: 686 set_opt(sbi, XATTR_USER); 687 break; 688 case Opt_nouser_xattr: 689 clear_opt(sbi, XATTR_USER); 690 break; 691 case Opt_inline_xattr: 692 set_opt(sbi, INLINE_XATTR); 693 break; 694 case Opt_noinline_xattr: 695 clear_opt(sbi, INLINE_XATTR); 696 break; 697 case Opt_inline_xattr_size: 698 if (args->from && match_int(args, &arg)) 699 return -EINVAL; 700 set_opt(sbi, INLINE_XATTR_SIZE); 701 F2FS_OPTION(sbi).inline_xattr_size = arg; 702 break; 703 #else 704 case Opt_user_xattr: 705 f2fs_info(sbi, "user_xattr options not supported"); 706 break; 707 case Opt_nouser_xattr: 708 f2fs_info(sbi, "nouser_xattr options not supported"); 709 break; 710 case Opt_inline_xattr: 711 f2fs_info(sbi, "inline_xattr options not supported"); 712 break; 713 case Opt_noinline_xattr: 714 f2fs_info(sbi, "noinline_xattr options not supported"); 715 break; 716 #endif 717 #ifdef CONFIG_F2FS_FS_POSIX_ACL 718 case Opt_acl: 719 set_opt(sbi, POSIX_ACL); 720 break; 721 case Opt_noacl: 722 clear_opt(sbi, POSIX_ACL); 723 break; 724 #else 725 case Opt_acl: 726 f2fs_info(sbi, "acl options not supported"); 727 break; 728 case Opt_noacl: 729 f2fs_info(sbi, "noacl options not supported"); 730 break; 731 #endif 732 case Opt_active_logs: 733 if (args->from && match_int(args, &arg)) 734 return -EINVAL; 735 if (arg != 2 && arg != 4 && 736 arg != NR_CURSEG_PERSIST_TYPE) 737 return -EINVAL; 738 F2FS_OPTION(sbi).active_logs = arg; 739 break; 740 case Opt_disable_ext_identify: 741 set_opt(sbi, DISABLE_EXT_IDENTIFY); 742 break; 743 case Opt_inline_data: 744 set_opt(sbi, INLINE_DATA); 745 break; 746 case Opt_inline_dentry: 747 set_opt(sbi, INLINE_DENTRY); 748 break; 749 case Opt_noinline_dentry: 750 clear_opt(sbi, INLINE_DENTRY); 751 break; 752 case Opt_flush_merge: 753 set_opt(sbi, FLUSH_MERGE); 754 break; 755 case Opt_noflush_merge: 756 clear_opt(sbi, FLUSH_MERGE); 757 break; 758 case Opt_nobarrier: 759 set_opt(sbi, NOBARRIER); 760 break; 761 case Opt_fastboot: 762 set_opt(sbi, FASTBOOT); 763 break; 764 case Opt_extent_cache: 765 set_opt(sbi, EXTENT_CACHE); 766 break; 767 case Opt_noextent_cache: 768 clear_opt(sbi, EXTENT_CACHE); 769 break; 770 case Opt_noinline_data: 771 clear_opt(sbi, INLINE_DATA); 772 break; 773 case Opt_data_flush: 774 set_opt(sbi, DATA_FLUSH); 775 break; 776 case Opt_reserve_root: 777 if (args->from && match_int(args, &arg)) 778 return -EINVAL; 779 if (test_opt(sbi, RESERVE_ROOT)) { 780 f2fs_info(sbi, "Preserve previous reserve_root=%u", 781 F2FS_OPTION(sbi).root_reserved_blocks); 782 } else { 783 F2FS_OPTION(sbi).root_reserved_blocks = arg; 784 set_opt(sbi, RESERVE_ROOT); 785 } 786 break; 787 case Opt_resuid: 788 if (args->from && match_int(args, &arg)) 789 return -EINVAL; 790 uid = make_kuid(current_user_ns(), arg); 791 if (!uid_valid(uid)) { 792 f2fs_err(sbi, "Invalid uid value %d", arg); 793 return -EINVAL; 794 } 795 F2FS_OPTION(sbi).s_resuid = uid; 796 break; 797 case Opt_resgid: 798 if (args->from && match_int(args, &arg)) 799 return -EINVAL; 800 gid = make_kgid(current_user_ns(), arg); 801 if (!gid_valid(gid)) { 802 f2fs_err(sbi, "Invalid gid value %d", arg); 803 return -EINVAL; 804 } 805 F2FS_OPTION(sbi).s_resgid = gid; 806 break; 807 case Opt_mode: 808 name = match_strdup(&args[0]); 809 810 if (!name) 811 return -ENOMEM; 812 if (!strcmp(name, "adaptive")) { 813 if (f2fs_sb_has_blkzoned(sbi)) { 814 f2fs_warn(sbi, "adaptive mode is not allowed with zoned block device feature"); 815 kfree(name); 816 return -EINVAL; 817 } 818 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE; 819 } else if (!strcmp(name, "lfs")) { 820 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS; 821 } else if (!strcmp(name, "fragment:segment")) { 822 F2FS_OPTION(sbi).fs_mode = FS_MODE_FRAGMENT_SEG; 823 } else if (!strcmp(name, "fragment:block")) { 824 F2FS_OPTION(sbi).fs_mode = FS_MODE_FRAGMENT_BLK; 825 } else { 826 kfree(name); 827 return -EINVAL; 828 } 829 kfree(name); 830 break; 831 case Opt_io_size_bits: 832 if (args->from && match_int(args, &arg)) 833 return -EINVAL; 834 if (arg <= 0 || arg > __ilog2_u32(BIO_MAX_VECS)) { 835 f2fs_warn(sbi, "Not support %d, larger than %d", 836 1 << arg, BIO_MAX_VECS); 837 return -EINVAL; 838 } 839 F2FS_OPTION(sbi).write_io_size_bits = arg; 840 break; 841 #ifdef CONFIG_F2FS_FAULT_INJECTION 842 case Opt_fault_injection: 843 if (args->from && match_int(args, &arg)) 844 return -EINVAL; 845 f2fs_build_fault_attr(sbi, arg, F2FS_ALL_FAULT_TYPE); 846 set_opt(sbi, FAULT_INJECTION); 847 break; 848 849 case Opt_fault_type: 850 if (args->from && match_int(args, &arg)) 851 return -EINVAL; 852 f2fs_build_fault_attr(sbi, 0, arg); 853 set_opt(sbi, FAULT_INJECTION); 854 break; 855 #else 856 case Opt_fault_injection: 857 f2fs_info(sbi, "fault_injection options not supported"); 858 break; 859 860 case Opt_fault_type: 861 f2fs_info(sbi, "fault_type options not supported"); 862 break; 863 #endif 864 case Opt_lazytime: 865 sb->s_flags |= SB_LAZYTIME; 866 break; 867 case Opt_nolazytime: 868 sb->s_flags &= ~SB_LAZYTIME; 869 break; 870 #ifdef CONFIG_QUOTA 871 case Opt_quota: 872 case Opt_usrquota: 873 set_opt(sbi, USRQUOTA); 874 break; 875 case Opt_grpquota: 876 set_opt(sbi, GRPQUOTA); 877 break; 878 case Opt_prjquota: 879 set_opt(sbi, PRJQUOTA); 880 break; 881 case Opt_usrjquota: 882 ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]); 883 if (ret) 884 return ret; 885 break; 886 case Opt_grpjquota: 887 ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]); 888 if (ret) 889 return ret; 890 break; 891 case Opt_prjjquota: 892 ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]); 893 if (ret) 894 return ret; 895 break; 896 case Opt_offusrjquota: 897 ret = f2fs_clear_qf_name(sb, USRQUOTA); 898 if (ret) 899 return ret; 900 break; 901 case Opt_offgrpjquota: 902 ret = f2fs_clear_qf_name(sb, GRPQUOTA); 903 if (ret) 904 return ret; 905 break; 906 case Opt_offprjjquota: 907 ret = f2fs_clear_qf_name(sb, PRJQUOTA); 908 if (ret) 909 return ret; 910 break; 911 case Opt_jqfmt_vfsold: 912 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD; 913 break; 914 case Opt_jqfmt_vfsv0: 915 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0; 916 break; 917 case Opt_jqfmt_vfsv1: 918 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1; 919 break; 920 case Opt_noquota: 921 clear_opt(sbi, QUOTA); 922 clear_opt(sbi, USRQUOTA); 923 clear_opt(sbi, GRPQUOTA); 924 clear_opt(sbi, PRJQUOTA); 925 break; 926 #else 927 case Opt_quota: 928 case Opt_usrquota: 929 case Opt_grpquota: 930 case Opt_prjquota: 931 case Opt_usrjquota: 932 case Opt_grpjquota: 933 case Opt_prjjquota: 934 case Opt_offusrjquota: 935 case Opt_offgrpjquota: 936 case Opt_offprjjquota: 937 case Opt_jqfmt_vfsold: 938 case Opt_jqfmt_vfsv0: 939 case Opt_jqfmt_vfsv1: 940 case Opt_noquota: 941 f2fs_info(sbi, "quota operations not supported"); 942 break; 943 #endif 944 case Opt_whint: 945 name = match_strdup(&args[0]); 946 if (!name) 947 return -ENOMEM; 948 if (!strcmp(name, "user-based")) { 949 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_USER; 950 } else if (!strcmp(name, "off")) { 951 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF; 952 } else if (!strcmp(name, "fs-based")) { 953 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_FS; 954 } else { 955 kfree(name); 956 return -EINVAL; 957 } 958 kfree(name); 959 break; 960 case Opt_alloc: 961 name = match_strdup(&args[0]); 962 if (!name) 963 return -ENOMEM; 964 965 if (!strcmp(name, "default")) { 966 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT; 967 } else if (!strcmp(name, "reuse")) { 968 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE; 969 } else { 970 kfree(name); 971 return -EINVAL; 972 } 973 kfree(name); 974 break; 975 case Opt_fsync: 976 name = match_strdup(&args[0]); 977 if (!name) 978 return -ENOMEM; 979 if (!strcmp(name, "posix")) { 980 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX; 981 } else if (!strcmp(name, "strict")) { 982 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT; 983 } else if (!strcmp(name, "nobarrier")) { 984 F2FS_OPTION(sbi).fsync_mode = 985 FSYNC_MODE_NOBARRIER; 986 } else { 987 kfree(name); 988 return -EINVAL; 989 } 990 kfree(name); 991 break; 992 case Opt_test_dummy_encryption: 993 ret = f2fs_set_test_dummy_encryption(sb, p, &args[0], 994 is_remount); 995 if (ret) 996 return ret; 997 break; 998 case Opt_inlinecrypt: 999 #ifdef CONFIG_FS_ENCRYPTION_INLINE_CRYPT 1000 sb->s_flags |= SB_INLINECRYPT; 1001 #else 1002 f2fs_info(sbi, "inline encryption not supported"); 1003 #endif 1004 break; 1005 case Opt_checkpoint_disable_cap_perc: 1006 if (args->from && match_int(args, &arg)) 1007 return -EINVAL; 1008 if (arg < 0 || arg > 100) 1009 return -EINVAL; 1010 F2FS_OPTION(sbi).unusable_cap_perc = arg; 1011 set_opt(sbi, DISABLE_CHECKPOINT); 1012 break; 1013 case Opt_checkpoint_disable_cap: 1014 if (args->from && match_int(args, &arg)) 1015 return -EINVAL; 1016 F2FS_OPTION(sbi).unusable_cap = arg; 1017 set_opt(sbi, DISABLE_CHECKPOINT); 1018 break; 1019 case Opt_checkpoint_disable: 1020 set_opt(sbi, DISABLE_CHECKPOINT); 1021 break; 1022 case Opt_checkpoint_enable: 1023 clear_opt(sbi, DISABLE_CHECKPOINT); 1024 break; 1025 case Opt_checkpoint_merge: 1026 set_opt(sbi, MERGE_CHECKPOINT); 1027 break; 1028 case Opt_nocheckpoint_merge: 1029 clear_opt(sbi, MERGE_CHECKPOINT); 1030 break; 1031 #ifdef CONFIG_F2FS_FS_COMPRESSION 1032 case Opt_compress_algorithm: 1033 if (!f2fs_sb_has_compression(sbi)) { 1034 f2fs_info(sbi, "Image doesn't support compression"); 1035 break; 1036 } 1037 name = match_strdup(&args[0]); 1038 if (!name) 1039 return -ENOMEM; 1040 if (!strcmp(name, "lzo")) { 1041 #ifdef CONFIG_F2FS_FS_LZO 1042 F2FS_OPTION(sbi).compress_level = 0; 1043 F2FS_OPTION(sbi).compress_algorithm = 1044 COMPRESS_LZO; 1045 #else 1046 f2fs_info(sbi, "kernel doesn't support lzo compression"); 1047 #endif 1048 } else if (!strncmp(name, "lz4", 3)) { 1049 #ifdef CONFIG_F2FS_FS_LZ4 1050 ret = f2fs_set_lz4hc_level(sbi, name); 1051 if (ret) { 1052 kfree(name); 1053 return -EINVAL; 1054 } 1055 F2FS_OPTION(sbi).compress_algorithm = 1056 COMPRESS_LZ4; 1057 #else 1058 f2fs_info(sbi, "kernel doesn't support lz4 compression"); 1059 #endif 1060 } else if (!strncmp(name, "zstd", 4)) { 1061 #ifdef CONFIG_F2FS_FS_ZSTD 1062 ret = f2fs_set_zstd_level(sbi, name); 1063 if (ret) { 1064 kfree(name); 1065 return -EINVAL; 1066 } 1067 F2FS_OPTION(sbi).compress_algorithm = 1068 COMPRESS_ZSTD; 1069 #else 1070 f2fs_info(sbi, "kernel doesn't support zstd compression"); 1071 #endif 1072 } else if (!strcmp(name, "lzo-rle")) { 1073 #ifdef CONFIG_F2FS_FS_LZORLE 1074 F2FS_OPTION(sbi).compress_level = 0; 1075 F2FS_OPTION(sbi).compress_algorithm = 1076 COMPRESS_LZORLE; 1077 #else 1078 f2fs_info(sbi, "kernel doesn't support lzorle compression"); 1079 #endif 1080 } else { 1081 kfree(name); 1082 return -EINVAL; 1083 } 1084 kfree(name); 1085 break; 1086 case Opt_compress_log_size: 1087 if (!f2fs_sb_has_compression(sbi)) { 1088 f2fs_info(sbi, "Image doesn't support compression"); 1089 break; 1090 } 1091 if (args->from && match_int(args, &arg)) 1092 return -EINVAL; 1093 if (arg < MIN_COMPRESS_LOG_SIZE || 1094 arg > MAX_COMPRESS_LOG_SIZE) { 1095 f2fs_err(sbi, 1096 "Compress cluster log size is out of range"); 1097 return -EINVAL; 1098 } 1099 F2FS_OPTION(sbi).compress_log_size = arg; 1100 break; 1101 case Opt_compress_extension: 1102 if (!f2fs_sb_has_compression(sbi)) { 1103 f2fs_info(sbi, "Image doesn't support compression"); 1104 break; 1105 } 1106 name = match_strdup(&args[0]); 1107 if (!name) 1108 return -ENOMEM; 1109 1110 ext = F2FS_OPTION(sbi).extensions; 1111 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt; 1112 1113 if (strlen(name) >= F2FS_EXTENSION_LEN || 1114 ext_cnt >= COMPRESS_EXT_NUM) { 1115 f2fs_err(sbi, 1116 "invalid extension length/number"); 1117 kfree(name); 1118 return -EINVAL; 1119 } 1120 1121 strcpy(ext[ext_cnt], name); 1122 F2FS_OPTION(sbi).compress_ext_cnt++; 1123 kfree(name); 1124 break; 1125 case Opt_nocompress_extension: 1126 if (!f2fs_sb_has_compression(sbi)) { 1127 f2fs_info(sbi, "Image doesn't support compression"); 1128 break; 1129 } 1130 name = match_strdup(&args[0]); 1131 if (!name) 1132 return -ENOMEM; 1133 1134 noext = F2FS_OPTION(sbi).noextensions; 1135 noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt; 1136 1137 if (strlen(name) >= F2FS_EXTENSION_LEN || 1138 noext_cnt >= COMPRESS_EXT_NUM) { 1139 f2fs_err(sbi, 1140 "invalid extension length/number"); 1141 kfree(name); 1142 return -EINVAL; 1143 } 1144 1145 strcpy(noext[noext_cnt], name); 1146 F2FS_OPTION(sbi).nocompress_ext_cnt++; 1147 kfree(name); 1148 break; 1149 case Opt_compress_chksum: 1150 F2FS_OPTION(sbi).compress_chksum = true; 1151 break; 1152 case Opt_compress_mode: 1153 name = match_strdup(&args[0]); 1154 if (!name) 1155 return -ENOMEM; 1156 if (!strcmp(name, "fs")) { 1157 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS; 1158 } else if (!strcmp(name, "user")) { 1159 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_USER; 1160 } else { 1161 kfree(name); 1162 return -EINVAL; 1163 } 1164 kfree(name); 1165 break; 1166 case Opt_compress_cache: 1167 set_opt(sbi, COMPRESS_CACHE); 1168 break; 1169 #else 1170 case Opt_compress_algorithm: 1171 case Opt_compress_log_size: 1172 case Opt_compress_extension: 1173 case Opt_nocompress_extension: 1174 case Opt_compress_chksum: 1175 case Opt_compress_mode: 1176 case Opt_compress_cache: 1177 f2fs_info(sbi, "compression options not supported"); 1178 break; 1179 #endif 1180 case Opt_atgc: 1181 set_opt(sbi, ATGC); 1182 break; 1183 case Opt_gc_merge: 1184 set_opt(sbi, GC_MERGE); 1185 break; 1186 case Opt_nogc_merge: 1187 clear_opt(sbi, GC_MERGE); 1188 break; 1189 case Opt_discard_unit: 1190 name = match_strdup(&args[0]); 1191 if (!name) 1192 return -ENOMEM; 1193 if (!strcmp(name, "block")) { 1194 F2FS_OPTION(sbi).discard_unit = 1195 DISCARD_UNIT_BLOCK; 1196 } else if (!strcmp(name, "segment")) { 1197 F2FS_OPTION(sbi).discard_unit = 1198 DISCARD_UNIT_SEGMENT; 1199 } else if (!strcmp(name, "section")) { 1200 F2FS_OPTION(sbi).discard_unit = 1201 DISCARD_UNIT_SECTION; 1202 } else { 1203 kfree(name); 1204 return -EINVAL; 1205 } 1206 kfree(name); 1207 break; 1208 default: 1209 f2fs_err(sbi, "Unrecognized mount option \"%s\" or missing value", 1210 p); 1211 return -EINVAL; 1212 } 1213 } 1214 default_check: 1215 #ifdef CONFIG_QUOTA 1216 if (f2fs_check_quota_options(sbi)) 1217 return -EINVAL; 1218 #else 1219 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sbi->sb)) { 1220 f2fs_info(sbi, "Filesystem with quota feature cannot be mounted RDWR without CONFIG_QUOTA"); 1221 return -EINVAL; 1222 } 1223 if (f2fs_sb_has_project_quota(sbi) && !f2fs_readonly(sbi->sb)) { 1224 f2fs_err(sbi, "Filesystem with project quota feature cannot be mounted RDWR without CONFIG_QUOTA"); 1225 return -EINVAL; 1226 } 1227 #endif 1228 #ifndef CONFIG_UNICODE 1229 if (f2fs_sb_has_casefold(sbi)) { 1230 f2fs_err(sbi, 1231 "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE"); 1232 return -EINVAL; 1233 } 1234 #endif 1235 /* 1236 * The BLKZONED feature indicates that the drive was formatted with 1237 * zone alignment optimization. This is optional for host-aware 1238 * devices, but mandatory for host-managed zoned block devices. 1239 */ 1240 #ifndef CONFIG_BLK_DEV_ZONED 1241 if (f2fs_sb_has_blkzoned(sbi)) { 1242 f2fs_err(sbi, "Zoned block device support is not enabled"); 1243 return -EINVAL; 1244 } 1245 #endif 1246 if (f2fs_sb_has_blkzoned(sbi)) { 1247 if (F2FS_OPTION(sbi).discard_unit != 1248 DISCARD_UNIT_SECTION) { 1249 f2fs_info(sbi, "Zoned block device doesn't need small discard, set discard_unit=section by default"); 1250 F2FS_OPTION(sbi).discard_unit = 1251 DISCARD_UNIT_SECTION; 1252 } 1253 } 1254 1255 #ifdef CONFIG_F2FS_FS_COMPRESSION 1256 if (f2fs_test_compress_extension(sbi)) { 1257 f2fs_err(sbi, "invalid compress or nocompress extension"); 1258 return -EINVAL; 1259 } 1260 #endif 1261 1262 if (F2FS_IO_SIZE_BITS(sbi) && !f2fs_lfs_mode(sbi)) { 1263 f2fs_err(sbi, "Should set mode=lfs with %uKB-sized IO", 1264 F2FS_IO_SIZE_KB(sbi)); 1265 return -EINVAL; 1266 } 1267 1268 if (test_opt(sbi, INLINE_XATTR_SIZE)) { 1269 int min_size, max_size; 1270 1271 if (!f2fs_sb_has_extra_attr(sbi) || 1272 !f2fs_sb_has_flexible_inline_xattr(sbi)) { 1273 f2fs_err(sbi, "extra_attr or flexible_inline_xattr feature is off"); 1274 return -EINVAL; 1275 } 1276 if (!test_opt(sbi, INLINE_XATTR)) { 1277 f2fs_err(sbi, "inline_xattr_size option should be set with inline_xattr option"); 1278 return -EINVAL; 1279 } 1280 1281 min_size = sizeof(struct f2fs_xattr_header) / sizeof(__le32); 1282 max_size = MAX_INLINE_XATTR_SIZE; 1283 1284 if (F2FS_OPTION(sbi).inline_xattr_size < min_size || 1285 F2FS_OPTION(sbi).inline_xattr_size > max_size) { 1286 f2fs_err(sbi, "inline xattr size is out of range: %d ~ %d", 1287 min_size, max_size); 1288 return -EINVAL; 1289 } 1290 } 1291 1292 if (test_opt(sbi, DISABLE_CHECKPOINT) && f2fs_lfs_mode(sbi)) { 1293 f2fs_err(sbi, "LFS not compatible with checkpoint=disable"); 1294 return -EINVAL; 1295 } 1296 1297 /* Not pass down write hints if the number of active logs is lesser 1298 * than NR_CURSEG_PERSIST_TYPE. 1299 */ 1300 if (F2FS_OPTION(sbi).active_logs != NR_CURSEG_PERSIST_TYPE) 1301 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF; 1302 1303 if (f2fs_sb_has_readonly(sbi) && !f2fs_readonly(sbi->sb)) { 1304 f2fs_err(sbi, "Allow to mount readonly mode only"); 1305 return -EROFS; 1306 } 1307 return 0; 1308 } 1309 1310 static struct inode *f2fs_alloc_inode(struct super_block *sb) 1311 { 1312 struct f2fs_inode_info *fi; 1313 1314 fi = f2fs_kmem_cache_alloc(f2fs_inode_cachep, 1315 GFP_F2FS_ZERO, false, F2FS_SB(sb)); 1316 if (!fi) 1317 return NULL; 1318 1319 init_once((void *) fi); 1320 1321 /* Initialize f2fs-specific inode info */ 1322 atomic_set(&fi->dirty_pages, 0); 1323 atomic_set(&fi->i_compr_blocks, 0); 1324 init_rwsem(&fi->i_sem); 1325 spin_lock_init(&fi->i_size_lock); 1326 INIT_LIST_HEAD(&fi->dirty_list); 1327 INIT_LIST_HEAD(&fi->gdirty_list); 1328 INIT_LIST_HEAD(&fi->inmem_ilist); 1329 INIT_LIST_HEAD(&fi->inmem_pages); 1330 mutex_init(&fi->inmem_lock); 1331 init_rwsem(&fi->i_gc_rwsem[READ]); 1332 init_rwsem(&fi->i_gc_rwsem[WRITE]); 1333 init_rwsem(&fi->i_xattr_sem); 1334 1335 /* Will be used by directory only */ 1336 fi->i_dir_level = F2FS_SB(sb)->dir_level; 1337 1338 return &fi->vfs_inode; 1339 } 1340 1341 static int f2fs_drop_inode(struct inode *inode) 1342 { 1343 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1344 int ret; 1345 1346 /* 1347 * during filesystem shutdown, if checkpoint is disabled, 1348 * drop useless meta/node dirty pages. 1349 */ 1350 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) { 1351 if (inode->i_ino == F2FS_NODE_INO(sbi) || 1352 inode->i_ino == F2FS_META_INO(sbi)) { 1353 trace_f2fs_drop_inode(inode, 1); 1354 return 1; 1355 } 1356 } 1357 1358 /* 1359 * This is to avoid a deadlock condition like below. 1360 * writeback_single_inode(inode) 1361 * - f2fs_write_data_page 1362 * - f2fs_gc -> iput -> evict 1363 * - inode_wait_for_writeback(inode) 1364 */ 1365 if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) { 1366 if (!inode->i_nlink && !is_bad_inode(inode)) { 1367 /* to avoid evict_inode call simultaneously */ 1368 atomic_inc(&inode->i_count); 1369 spin_unlock(&inode->i_lock); 1370 1371 /* some remained atomic pages should discarded */ 1372 if (f2fs_is_atomic_file(inode)) 1373 f2fs_drop_inmem_pages(inode); 1374 1375 /* should remain fi->extent_tree for writepage */ 1376 f2fs_destroy_extent_node(inode); 1377 1378 sb_start_intwrite(inode->i_sb); 1379 f2fs_i_size_write(inode, 0); 1380 1381 f2fs_submit_merged_write_cond(F2FS_I_SB(inode), 1382 inode, NULL, 0, DATA); 1383 truncate_inode_pages_final(inode->i_mapping); 1384 1385 if (F2FS_HAS_BLOCKS(inode)) 1386 f2fs_truncate(inode); 1387 1388 sb_end_intwrite(inode->i_sb); 1389 1390 spin_lock(&inode->i_lock); 1391 atomic_dec(&inode->i_count); 1392 } 1393 trace_f2fs_drop_inode(inode, 0); 1394 return 0; 1395 } 1396 ret = generic_drop_inode(inode); 1397 if (!ret) 1398 ret = fscrypt_drop_inode(inode); 1399 trace_f2fs_drop_inode(inode, ret); 1400 return ret; 1401 } 1402 1403 int f2fs_inode_dirtied(struct inode *inode, bool sync) 1404 { 1405 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1406 int ret = 0; 1407 1408 spin_lock(&sbi->inode_lock[DIRTY_META]); 1409 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) { 1410 ret = 1; 1411 } else { 1412 set_inode_flag(inode, FI_DIRTY_INODE); 1413 stat_inc_dirty_inode(sbi, DIRTY_META); 1414 } 1415 if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) { 1416 list_add_tail(&F2FS_I(inode)->gdirty_list, 1417 &sbi->inode_list[DIRTY_META]); 1418 inc_page_count(sbi, F2FS_DIRTY_IMETA); 1419 } 1420 spin_unlock(&sbi->inode_lock[DIRTY_META]); 1421 return ret; 1422 } 1423 1424 void f2fs_inode_synced(struct inode *inode) 1425 { 1426 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1427 1428 spin_lock(&sbi->inode_lock[DIRTY_META]); 1429 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) { 1430 spin_unlock(&sbi->inode_lock[DIRTY_META]); 1431 return; 1432 } 1433 if (!list_empty(&F2FS_I(inode)->gdirty_list)) { 1434 list_del_init(&F2FS_I(inode)->gdirty_list); 1435 dec_page_count(sbi, F2FS_DIRTY_IMETA); 1436 } 1437 clear_inode_flag(inode, FI_DIRTY_INODE); 1438 clear_inode_flag(inode, FI_AUTO_RECOVER); 1439 stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META); 1440 spin_unlock(&sbi->inode_lock[DIRTY_META]); 1441 } 1442 1443 /* 1444 * f2fs_dirty_inode() is called from __mark_inode_dirty() 1445 * 1446 * We should call set_dirty_inode to write the dirty inode through write_inode. 1447 */ 1448 static void f2fs_dirty_inode(struct inode *inode, int flags) 1449 { 1450 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1451 1452 if (inode->i_ino == F2FS_NODE_INO(sbi) || 1453 inode->i_ino == F2FS_META_INO(sbi)) 1454 return; 1455 1456 if (is_inode_flag_set(inode, FI_AUTO_RECOVER)) 1457 clear_inode_flag(inode, FI_AUTO_RECOVER); 1458 1459 f2fs_inode_dirtied(inode, false); 1460 } 1461 1462 static void f2fs_free_inode(struct inode *inode) 1463 { 1464 fscrypt_free_inode(inode); 1465 kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode)); 1466 } 1467 1468 static void destroy_percpu_info(struct f2fs_sb_info *sbi) 1469 { 1470 percpu_counter_destroy(&sbi->alloc_valid_block_count); 1471 percpu_counter_destroy(&sbi->total_valid_inode_count); 1472 } 1473 1474 static void destroy_device_list(struct f2fs_sb_info *sbi) 1475 { 1476 int i; 1477 1478 for (i = 0; i < sbi->s_ndevs; i++) { 1479 blkdev_put(FDEV(i).bdev, FMODE_EXCL); 1480 #ifdef CONFIG_BLK_DEV_ZONED 1481 kvfree(FDEV(i).blkz_seq); 1482 kfree(FDEV(i).zone_capacity_blocks); 1483 #endif 1484 } 1485 kvfree(sbi->devs); 1486 } 1487 1488 static void f2fs_put_super(struct super_block *sb) 1489 { 1490 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1491 int i; 1492 bool dropped; 1493 1494 /* unregister procfs/sysfs entries in advance to avoid race case */ 1495 f2fs_unregister_sysfs(sbi); 1496 1497 f2fs_quota_off_umount(sb); 1498 1499 /* prevent remaining shrinker jobs */ 1500 mutex_lock(&sbi->umount_mutex); 1501 1502 /* 1503 * flush all issued checkpoints and stop checkpoint issue thread. 1504 * after then, all checkpoints should be done by each process context. 1505 */ 1506 f2fs_stop_ckpt_thread(sbi); 1507 1508 /* 1509 * We don't need to do checkpoint when superblock is clean. 1510 * But, the previous checkpoint was not done by umount, it needs to do 1511 * clean checkpoint again. 1512 */ 1513 if ((is_sbi_flag_set(sbi, SBI_IS_DIRTY) || 1514 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))) { 1515 struct cp_control cpc = { 1516 .reason = CP_UMOUNT, 1517 }; 1518 f2fs_write_checkpoint(sbi, &cpc); 1519 } 1520 1521 /* be sure to wait for any on-going discard commands */ 1522 dropped = f2fs_issue_discard_timeout(sbi); 1523 1524 if ((f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) && 1525 !sbi->discard_blks && !dropped) { 1526 struct cp_control cpc = { 1527 .reason = CP_UMOUNT | CP_TRIMMED, 1528 }; 1529 f2fs_write_checkpoint(sbi, &cpc); 1530 } 1531 1532 /* 1533 * normally superblock is clean, so we need to release this. 1534 * In addition, EIO will skip do checkpoint, we need this as well. 1535 */ 1536 f2fs_release_ino_entry(sbi, true); 1537 1538 f2fs_leave_shrinker(sbi); 1539 mutex_unlock(&sbi->umount_mutex); 1540 1541 /* our cp_error case, we can wait for any writeback page */ 1542 f2fs_flush_merged_writes(sbi); 1543 1544 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA); 1545 1546 f2fs_bug_on(sbi, sbi->fsync_node_num); 1547 1548 f2fs_destroy_compress_inode(sbi); 1549 1550 iput(sbi->node_inode); 1551 sbi->node_inode = NULL; 1552 1553 iput(sbi->meta_inode); 1554 sbi->meta_inode = NULL; 1555 1556 /* 1557 * iput() can update stat information, if f2fs_write_checkpoint() 1558 * above failed with error. 1559 */ 1560 f2fs_destroy_stats(sbi); 1561 1562 /* destroy f2fs internal modules */ 1563 f2fs_destroy_node_manager(sbi); 1564 f2fs_destroy_segment_manager(sbi); 1565 1566 f2fs_destroy_post_read_wq(sbi); 1567 1568 kvfree(sbi->ckpt); 1569 1570 sb->s_fs_info = NULL; 1571 if (sbi->s_chksum_driver) 1572 crypto_free_shash(sbi->s_chksum_driver); 1573 kfree(sbi->raw_super); 1574 1575 destroy_device_list(sbi); 1576 f2fs_destroy_page_array_cache(sbi); 1577 f2fs_destroy_xattr_caches(sbi); 1578 mempool_destroy(sbi->write_io_dummy); 1579 #ifdef CONFIG_QUOTA 1580 for (i = 0; i < MAXQUOTAS; i++) 1581 kfree(F2FS_OPTION(sbi).s_qf_names[i]); 1582 #endif 1583 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy); 1584 destroy_percpu_info(sbi); 1585 f2fs_destroy_iostat(sbi); 1586 for (i = 0; i < NR_PAGE_TYPE; i++) 1587 kvfree(sbi->write_io[i]); 1588 #ifdef CONFIG_UNICODE 1589 utf8_unload(sb->s_encoding); 1590 #endif 1591 kfree(sbi); 1592 } 1593 1594 int f2fs_sync_fs(struct super_block *sb, int sync) 1595 { 1596 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1597 int err = 0; 1598 1599 if (unlikely(f2fs_cp_error(sbi))) 1600 return 0; 1601 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) 1602 return 0; 1603 1604 trace_f2fs_sync_fs(sb, sync); 1605 1606 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 1607 return -EAGAIN; 1608 1609 if (sync) 1610 err = f2fs_issue_checkpoint(sbi); 1611 1612 return err; 1613 } 1614 1615 static int f2fs_freeze(struct super_block *sb) 1616 { 1617 if (f2fs_readonly(sb)) 1618 return 0; 1619 1620 /* IO error happened before */ 1621 if (unlikely(f2fs_cp_error(F2FS_SB(sb)))) 1622 return -EIO; 1623 1624 /* must be clean, since sync_filesystem() was already called */ 1625 if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY)) 1626 return -EINVAL; 1627 1628 /* ensure no checkpoint required */ 1629 if (!llist_empty(&F2FS_SB(sb)->cprc_info.issue_list)) 1630 return -EINVAL; 1631 return 0; 1632 } 1633 1634 static int f2fs_unfreeze(struct super_block *sb) 1635 { 1636 return 0; 1637 } 1638 1639 #ifdef CONFIG_QUOTA 1640 static int f2fs_statfs_project(struct super_block *sb, 1641 kprojid_t projid, struct kstatfs *buf) 1642 { 1643 struct kqid qid; 1644 struct dquot *dquot; 1645 u64 limit; 1646 u64 curblock; 1647 1648 qid = make_kqid_projid(projid); 1649 dquot = dqget(sb, qid); 1650 if (IS_ERR(dquot)) 1651 return PTR_ERR(dquot); 1652 spin_lock(&dquot->dq_dqb_lock); 1653 1654 limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit, 1655 dquot->dq_dqb.dqb_bhardlimit); 1656 if (limit) 1657 limit >>= sb->s_blocksize_bits; 1658 1659 if (limit && buf->f_blocks > limit) { 1660 curblock = (dquot->dq_dqb.dqb_curspace + 1661 dquot->dq_dqb.dqb_rsvspace) >> sb->s_blocksize_bits; 1662 buf->f_blocks = limit; 1663 buf->f_bfree = buf->f_bavail = 1664 (buf->f_blocks > curblock) ? 1665 (buf->f_blocks - curblock) : 0; 1666 } 1667 1668 limit = min_not_zero(dquot->dq_dqb.dqb_isoftlimit, 1669 dquot->dq_dqb.dqb_ihardlimit); 1670 1671 if (limit && buf->f_files > limit) { 1672 buf->f_files = limit; 1673 buf->f_ffree = 1674 (buf->f_files > dquot->dq_dqb.dqb_curinodes) ? 1675 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0; 1676 } 1677 1678 spin_unlock(&dquot->dq_dqb_lock); 1679 dqput(dquot); 1680 return 0; 1681 } 1682 #endif 1683 1684 static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf) 1685 { 1686 struct super_block *sb = dentry->d_sb; 1687 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1688 u64 id = huge_encode_dev(sb->s_bdev->bd_dev); 1689 block_t total_count, user_block_count, start_count; 1690 u64 avail_node_count; 1691 1692 total_count = le64_to_cpu(sbi->raw_super->block_count); 1693 user_block_count = sbi->user_block_count; 1694 start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr); 1695 buf->f_type = F2FS_SUPER_MAGIC; 1696 buf->f_bsize = sbi->blocksize; 1697 1698 buf->f_blocks = total_count - start_count; 1699 buf->f_bfree = user_block_count - valid_user_blocks(sbi) - 1700 sbi->current_reserved_blocks; 1701 1702 spin_lock(&sbi->stat_lock); 1703 if (unlikely(buf->f_bfree <= sbi->unusable_block_count)) 1704 buf->f_bfree = 0; 1705 else 1706 buf->f_bfree -= sbi->unusable_block_count; 1707 spin_unlock(&sbi->stat_lock); 1708 1709 if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks) 1710 buf->f_bavail = buf->f_bfree - 1711 F2FS_OPTION(sbi).root_reserved_blocks; 1712 else 1713 buf->f_bavail = 0; 1714 1715 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM; 1716 1717 if (avail_node_count > user_block_count) { 1718 buf->f_files = user_block_count; 1719 buf->f_ffree = buf->f_bavail; 1720 } else { 1721 buf->f_files = avail_node_count; 1722 buf->f_ffree = min(avail_node_count - valid_node_count(sbi), 1723 buf->f_bavail); 1724 } 1725 1726 buf->f_namelen = F2FS_NAME_LEN; 1727 buf->f_fsid = u64_to_fsid(id); 1728 1729 #ifdef CONFIG_QUOTA 1730 if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) && 1731 sb_has_quota_limits_enabled(sb, PRJQUOTA)) { 1732 f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf); 1733 } 1734 #endif 1735 return 0; 1736 } 1737 1738 static inline void f2fs_show_quota_options(struct seq_file *seq, 1739 struct super_block *sb) 1740 { 1741 #ifdef CONFIG_QUOTA 1742 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1743 1744 if (F2FS_OPTION(sbi).s_jquota_fmt) { 1745 char *fmtname = ""; 1746 1747 switch (F2FS_OPTION(sbi).s_jquota_fmt) { 1748 case QFMT_VFS_OLD: 1749 fmtname = "vfsold"; 1750 break; 1751 case QFMT_VFS_V0: 1752 fmtname = "vfsv0"; 1753 break; 1754 case QFMT_VFS_V1: 1755 fmtname = "vfsv1"; 1756 break; 1757 } 1758 seq_printf(seq, ",jqfmt=%s", fmtname); 1759 } 1760 1761 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA]) 1762 seq_show_option(seq, "usrjquota", 1763 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]); 1764 1765 if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]) 1766 seq_show_option(seq, "grpjquota", 1767 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]); 1768 1769 if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) 1770 seq_show_option(seq, "prjjquota", 1771 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]); 1772 #endif 1773 } 1774 1775 #ifdef CONFIG_F2FS_FS_COMPRESSION 1776 static inline void f2fs_show_compress_options(struct seq_file *seq, 1777 struct super_block *sb) 1778 { 1779 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1780 char *algtype = ""; 1781 int i; 1782 1783 if (!f2fs_sb_has_compression(sbi)) 1784 return; 1785 1786 switch (F2FS_OPTION(sbi).compress_algorithm) { 1787 case COMPRESS_LZO: 1788 algtype = "lzo"; 1789 break; 1790 case COMPRESS_LZ4: 1791 algtype = "lz4"; 1792 break; 1793 case COMPRESS_ZSTD: 1794 algtype = "zstd"; 1795 break; 1796 case COMPRESS_LZORLE: 1797 algtype = "lzo-rle"; 1798 break; 1799 } 1800 seq_printf(seq, ",compress_algorithm=%s", algtype); 1801 1802 if (F2FS_OPTION(sbi).compress_level) 1803 seq_printf(seq, ":%d", F2FS_OPTION(sbi).compress_level); 1804 1805 seq_printf(seq, ",compress_log_size=%u", 1806 F2FS_OPTION(sbi).compress_log_size); 1807 1808 for (i = 0; i < F2FS_OPTION(sbi).compress_ext_cnt; i++) { 1809 seq_printf(seq, ",compress_extension=%s", 1810 F2FS_OPTION(sbi).extensions[i]); 1811 } 1812 1813 for (i = 0; i < F2FS_OPTION(sbi).nocompress_ext_cnt; i++) { 1814 seq_printf(seq, ",nocompress_extension=%s", 1815 F2FS_OPTION(sbi).noextensions[i]); 1816 } 1817 1818 if (F2FS_OPTION(sbi).compress_chksum) 1819 seq_puts(seq, ",compress_chksum"); 1820 1821 if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_FS) 1822 seq_printf(seq, ",compress_mode=%s", "fs"); 1823 else if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_USER) 1824 seq_printf(seq, ",compress_mode=%s", "user"); 1825 1826 if (test_opt(sbi, COMPRESS_CACHE)) 1827 seq_puts(seq, ",compress_cache"); 1828 } 1829 #endif 1830 1831 static int f2fs_show_options(struct seq_file *seq, struct dentry *root) 1832 { 1833 struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb); 1834 1835 if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_SYNC) 1836 seq_printf(seq, ",background_gc=%s", "sync"); 1837 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_ON) 1838 seq_printf(seq, ",background_gc=%s", "on"); 1839 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF) 1840 seq_printf(seq, ",background_gc=%s", "off"); 1841 1842 if (test_opt(sbi, GC_MERGE)) 1843 seq_puts(seq, ",gc_merge"); 1844 1845 if (test_opt(sbi, DISABLE_ROLL_FORWARD)) 1846 seq_puts(seq, ",disable_roll_forward"); 1847 if (test_opt(sbi, NORECOVERY)) 1848 seq_puts(seq, ",norecovery"); 1849 if (test_opt(sbi, DISCARD)) 1850 seq_puts(seq, ",discard"); 1851 else 1852 seq_puts(seq, ",nodiscard"); 1853 if (test_opt(sbi, NOHEAP)) 1854 seq_puts(seq, ",no_heap"); 1855 else 1856 seq_puts(seq, ",heap"); 1857 #ifdef CONFIG_F2FS_FS_XATTR 1858 if (test_opt(sbi, XATTR_USER)) 1859 seq_puts(seq, ",user_xattr"); 1860 else 1861 seq_puts(seq, ",nouser_xattr"); 1862 if (test_opt(sbi, INLINE_XATTR)) 1863 seq_puts(seq, ",inline_xattr"); 1864 else 1865 seq_puts(seq, ",noinline_xattr"); 1866 if (test_opt(sbi, INLINE_XATTR_SIZE)) 1867 seq_printf(seq, ",inline_xattr_size=%u", 1868 F2FS_OPTION(sbi).inline_xattr_size); 1869 #endif 1870 #ifdef CONFIG_F2FS_FS_POSIX_ACL 1871 if (test_opt(sbi, POSIX_ACL)) 1872 seq_puts(seq, ",acl"); 1873 else 1874 seq_puts(seq, ",noacl"); 1875 #endif 1876 if (test_opt(sbi, DISABLE_EXT_IDENTIFY)) 1877 seq_puts(seq, ",disable_ext_identify"); 1878 if (test_opt(sbi, INLINE_DATA)) 1879 seq_puts(seq, ",inline_data"); 1880 else 1881 seq_puts(seq, ",noinline_data"); 1882 if (test_opt(sbi, INLINE_DENTRY)) 1883 seq_puts(seq, ",inline_dentry"); 1884 else 1885 seq_puts(seq, ",noinline_dentry"); 1886 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE)) 1887 seq_puts(seq, ",flush_merge"); 1888 if (test_opt(sbi, NOBARRIER)) 1889 seq_puts(seq, ",nobarrier"); 1890 if (test_opt(sbi, FASTBOOT)) 1891 seq_puts(seq, ",fastboot"); 1892 if (test_opt(sbi, EXTENT_CACHE)) 1893 seq_puts(seq, ",extent_cache"); 1894 else 1895 seq_puts(seq, ",noextent_cache"); 1896 if (test_opt(sbi, DATA_FLUSH)) 1897 seq_puts(seq, ",data_flush"); 1898 1899 seq_puts(seq, ",mode="); 1900 if (F2FS_OPTION(sbi).fs_mode == FS_MODE_ADAPTIVE) 1901 seq_puts(seq, "adaptive"); 1902 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_LFS) 1903 seq_puts(seq, "lfs"); 1904 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_SEG) 1905 seq_puts(seq, "fragment:segment"); 1906 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_BLK) 1907 seq_puts(seq, "fragment:block"); 1908 seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs); 1909 if (test_opt(sbi, RESERVE_ROOT)) 1910 seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u", 1911 F2FS_OPTION(sbi).root_reserved_blocks, 1912 from_kuid_munged(&init_user_ns, 1913 F2FS_OPTION(sbi).s_resuid), 1914 from_kgid_munged(&init_user_ns, 1915 F2FS_OPTION(sbi).s_resgid)); 1916 if (F2FS_IO_SIZE_BITS(sbi)) 1917 seq_printf(seq, ",io_bits=%u", 1918 F2FS_OPTION(sbi).write_io_size_bits); 1919 #ifdef CONFIG_F2FS_FAULT_INJECTION 1920 if (test_opt(sbi, FAULT_INJECTION)) { 1921 seq_printf(seq, ",fault_injection=%u", 1922 F2FS_OPTION(sbi).fault_info.inject_rate); 1923 seq_printf(seq, ",fault_type=%u", 1924 F2FS_OPTION(sbi).fault_info.inject_type); 1925 } 1926 #endif 1927 #ifdef CONFIG_QUOTA 1928 if (test_opt(sbi, QUOTA)) 1929 seq_puts(seq, ",quota"); 1930 if (test_opt(sbi, USRQUOTA)) 1931 seq_puts(seq, ",usrquota"); 1932 if (test_opt(sbi, GRPQUOTA)) 1933 seq_puts(seq, ",grpquota"); 1934 if (test_opt(sbi, PRJQUOTA)) 1935 seq_puts(seq, ",prjquota"); 1936 #endif 1937 f2fs_show_quota_options(seq, sbi->sb); 1938 if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER) 1939 seq_printf(seq, ",whint_mode=%s", "user-based"); 1940 else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS) 1941 seq_printf(seq, ",whint_mode=%s", "fs-based"); 1942 1943 fscrypt_show_test_dummy_encryption(seq, ',', sbi->sb); 1944 1945 if (sbi->sb->s_flags & SB_INLINECRYPT) 1946 seq_puts(seq, ",inlinecrypt"); 1947 1948 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT) 1949 seq_printf(seq, ",alloc_mode=%s", "default"); 1950 else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE) 1951 seq_printf(seq, ",alloc_mode=%s", "reuse"); 1952 1953 if (test_opt(sbi, DISABLE_CHECKPOINT)) 1954 seq_printf(seq, ",checkpoint=disable:%u", 1955 F2FS_OPTION(sbi).unusable_cap); 1956 if (test_opt(sbi, MERGE_CHECKPOINT)) 1957 seq_puts(seq, ",checkpoint_merge"); 1958 else 1959 seq_puts(seq, ",nocheckpoint_merge"); 1960 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX) 1961 seq_printf(seq, ",fsync_mode=%s", "posix"); 1962 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) 1963 seq_printf(seq, ",fsync_mode=%s", "strict"); 1964 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER) 1965 seq_printf(seq, ",fsync_mode=%s", "nobarrier"); 1966 1967 #ifdef CONFIG_F2FS_FS_COMPRESSION 1968 f2fs_show_compress_options(seq, sbi->sb); 1969 #endif 1970 1971 if (test_opt(sbi, ATGC)) 1972 seq_puts(seq, ",atgc"); 1973 1974 if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_BLOCK) 1975 seq_printf(seq, ",discard_unit=%s", "block"); 1976 else if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SEGMENT) 1977 seq_printf(seq, ",discard_unit=%s", "segment"); 1978 else if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SECTION) 1979 seq_printf(seq, ",discard_unit=%s", "section"); 1980 1981 return 0; 1982 } 1983 1984 static void default_options(struct f2fs_sb_info *sbi) 1985 { 1986 /* init some FS parameters */ 1987 if (f2fs_sb_has_readonly(sbi)) 1988 F2FS_OPTION(sbi).active_logs = NR_CURSEG_RO_TYPE; 1989 else 1990 F2FS_OPTION(sbi).active_logs = NR_CURSEG_PERSIST_TYPE; 1991 1992 F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS; 1993 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF; 1994 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT; 1995 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX; 1996 F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID); 1997 F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID); 1998 F2FS_OPTION(sbi).compress_algorithm = COMPRESS_LZ4; 1999 F2FS_OPTION(sbi).compress_log_size = MIN_COMPRESS_LOG_SIZE; 2000 F2FS_OPTION(sbi).compress_ext_cnt = 0; 2001 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS; 2002 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON; 2003 2004 sbi->sb->s_flags &= ~SB_INLINECRYPT; 2005 2006 set_opt(sbi, INLINE_XATTR); 2007 set_opt(sbi, INLINE_DATA); 2008 set_opt(sbi, INLINE_DENTRY); 2009 set_opt(sbi, EXTENT_CACHE); 2010 set_opt(sbi, NOHEAP); 2011 clear_opt(sbi, DISABLE_CHECKPOINT); 2012 set_opt(sbi, MERGE_CHECKPOINT); 2013 F2FS_OPTION(sbi).unusable_cap = 0; 2014 sbi->sb->s_flags |= SB_LAZYTIME; 2015 set_opt(sbi, FLUSH_MERGE); 2016 if (f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) 2017 set_opt(sbi, DISCARD); 2018 if (f2fs_sb_has_blkzoned(sbi)) { 2019 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS; 2020 F2FS_OPTION(sbi).discard_unit = DISCARD_UNIT_SECTION; 2021 } else { 2022 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE; 2023 F2FS_OPTION(sbi).discard_unit = DISCARD_UNIT_BLOCK; 2024 } 2025 2026 #ifdef CONFIG_F2FS_FS_XATTR 2027 set_opt(sbi, XATTR_USER); 2028 #endif 2029 #ifdef CONFIG_F2FS_FS_POSIX_ACL 2030 set_opt(sbi, POSIX_ACL); 2031 #endif 2032 2033 f2fs_build_fault_attr(sbi, 0, 0); 2034 } 2035 2036 #ifdef CONFIG_QUOTA 2037 static int f2fs_enable_quotas(struct super_block *sb); 2038 #endif 2039 2040 static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi) 2041 { 2042 unsigned int s_flags = sbi->sb->s_flags; 2043 struct cp_control cpc; 2044 int err = 0; 2045 int ret; 2046 block_t unusable; 2047 2048 if (s_flags & SB_RDONLY) { 2049 f2fs_err(sbi, "checkpoint=disable on readonly fs"); 2050 return -EINVAL; 2051 } 2052 sbi->sb->s_flags |= SB_ACTIVE; 2053 2054 f2fs_update_time(sbi, DISABLE_TIME); 2055 2056 while (!f2fs_time_over(sbi, DISABLE_TIME)) { 2057 down_write(&sbi->gc_lock); 2058 err = f2fs_gc(sbi, true, false, false, NULL_SEGNO); 2059 if (err == -ENODATA) { 2060 err = 0; 2061 break; 2062 } 2063 if (err && err != -EAGAIN) 2064 break; 2065 } 2066 2067 ret = sync_filesystem(sbi->sb); 2068 if (ret || err) { 2069 err = ret ? ret : err; 2070 goto restore_flag; 2071 } 2072 2073 unusable = f2fs_get_unusable_blocks(sbi); 2074 if (f2fs_disable_cp_again(sbi, unusable)) { 2075 err = -EAGAIN; 2076 goto restore_flag; 2077 } 2078 2079 down_write(&sbi->gc_lock); 2080 cpc.reason = CP_PAUSE; 2081 set_sbi_flag(sbi, SBI_CP_DISABLED); 2082 err = f2fs_write_checkpoint(sbi, &cpc); 2083 if (err) 2084 goto out_unlock; 2085 2086 spin_lock(&sbi->stat_lock); 2087 sbi->unusable_block_count = unusable; 2088 spin_unlock(&sbi->stat_lock); 2089 2090 out_unlock: 2091 up_write(&sbi->gc_lock); 2092 restore_flag: 2093 sbi->sb->s_flags = s_flags; /* Restore SB_RDONLY status */ 2094 return err; 2095 } 2096 2097 static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi) 2098 { 2099 int retry = DEFAULT_RETRY_IO_COUNT; 2100 2101 /* we should flush all the data to keep data consistency */ 2102 do { 2103 sync_inodes_sb(sbi->sb); 2104 cond_resched(); 2105 congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT); 2106 } while (get_pages(sbi, F2FS_DIRTY_DATA) && retry--); 2107 2108 if (unlikely(retry < 0)) 2109 f2fs_warn(sbi, "checkpoint=enable has some unwritten data."); 2110 2111 down_write(&sbi->gc_lock); 2112 f2fs_dirty_to_prefree(sbi); 2113 2114 clear_sbi_flag(sbi, SBI_CP_DISABLED); 2115 set_sbi_flag(sbi, SBI_IS_DIRTY); 2116 up_write(&sbi->gc_lock); 2117 2118 f2fs_sync_fs(sbi->sb, 1); 2119 } 2120 2121 static int f2fs_remount(struct super_block *sb, int *flags, char *data) 2122 { 2123 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2124 struct f2fs_mount_info org_mount_opt; 2125 unsigned long old_sb_flags; 2126 int err; 2127 bool need_restart_gc = false, need_stop_gc = false; 2128 bool need_restart_ckpt = false, need_stop_ckpt = false; 2129 bool need_restart_flush = false, need_stop_flush = false; 2130 bool need_restart_discard = false, need_stop_discard = false; 2131 bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE); 2132 bool enable_checkpoint = !test_opt(sbi, DISABLE_CHECKPOINT); 2133 bool no_io_align = !F2FS_IO_ALIGNED(sbi); 2134 bool no_atgc = !test_opt(sbi, ATGC); 2135 bool no_discard = !test_opt(sbi, DISCARD); 2136 bool no_compress_cache = !test_opt(sbi, COMPRESS_CACHE); 2137 bool block_unit_discard = f2fs_block_unit_discard(sbi); 2138 struct discard_cmd_control *dcc; 2139 #ifdef CONFIG_QUOTA 2140 int i, j; 2141 #endif 2142 2143 /* 2144 * Save the old mount options in case we 2145 * need to restore them. 2146 */ 2147 org_mount_opt = sbi->mount_opt; 2148 old_sb_flags = sb->s_flags; 2149 2150 #ifdef CONFIG_QUOTA 2151 org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt; 2152 for (i = 0; i < MAXQUOTAS; i++) { 2153 if (F2FS_OPTION(sbi).s_qf_names[i]) { 2154 org_mount_opt.s_qf_names[i] = 2155 kstrdup(F2FS_OPTION(sbi).s_qf_names[i], 2156 GFP_KERNEL); 2157 if (!org_mount_opt.s_qf_names[i]) { 2158 for (j = 0; j < i; j++) 2159 kfree(org_mount_opt.s_qf_names[j]); 2160 return -ENOMEM; 2161 } 2162 } else { 2163 org_mount_opt.s_qf_names[i] = NULL; 2164 } 2165 } 2166 #endif 2167 2168 /* recover superblocks we couldn't write due to previous RO mount */ 2169 if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) { 2170 err = f2fs_commit_super(sbi, false); 2171 f2fs_info(sbi, "Try to recover all the superblocks, ret: %d", 2172 err); 2173 if (!err) 2174 clear_sbi_flag(sbi, SBI_NEED_SB_WRITE); 2175 } 2176 2177 default_options(sbi); 2178 2179 /* parse mount options */ 2180 err = parse_options(sb, data, true); 2181 if (err) 2182 goto restore_opts; 2183 2184 /* 2185 * Previous and new state of filesystem is RO, 2186 * so skip checking GC and FLUSH_MERGE conditions. 2187 */ 2188 if (f2fs_readonly(sb) && (*flags & SB_RDONLY)) 2189 goto skip; 2190 2191 if (f2fs_sb_has_readonly(sbi) && !(*flags & SB_RDONLY)) { 2192 err = -EROFS; 2193 goto restore_opts; 2194 } 2195 2196 #ifdef CONFIG_QUOTA 2197 if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) { 2198 err = dquot_suspend(sb, -1); 2199 if (err < 0) 2200 goto restore_opts; 2201 } else if (f2fs_readonly(sb) && !(*flags & SB_RDONLY)) { 2202 /* dquot_resume needs RW */ 2203 sb->s_flags &= ~SB_RDONLY; 2204 if (sb_any_quota_suspended(sb)) { 2205 dquot_resume(sb, -1); 2206 } else if (f2fs_sb_has_quota_ino(sbi)) { 2207 err = f2fs_enable_quotas(sb); 2208 if (err) 2209 goto restore_opts; 2210 } 2211 } 2212 #endif 2213 /* disallow enable atgc dynamically */ 2214 if (no_atgc == !!test_opt(sbi, ATGC)) { 2215 err = -EINVAL; 2216 f2fs_warn(sbi, "switch atgc option is not allowed"); 2217 goto restore_opts; 2218 } 2219 2220 /* disallow enable/disable extent_cache dynamically */ 2221 if (no_extent_cache == !!test_opt(sbi, EXTENT_CACHE)) { 2222 err = -EINVAL; 2223 f2fs_warn(sbi, "switch extent_cache option is not allowed"); 2224 goto restore_opts; 2225 } 2226 2227 if (no_io_align == !!F2FS_IO_ALIGNED(sbi)) { 2228 err = -EINVAL; 2229 f2fs_warn(sbi, "switch io_bits option is not allowed"); 2230 goto restore_opts; 2231 } 2232 2233 if (no_compress_cache == !!test_opt(sbi, COMPRESS_CACHE)) { 2234 err = -EINVAL; 2235 f2fs_warn(sbi, "switch compress_cache option is not allowed"); 2236 goto restore_opts; 2237 } 2238 2239 if (block_unit_discard != f2fs_block_unit_discard(sbi)) { 2240 err = -EINVAL; 2241 f2fs_warn(sbi, "switch discard_unit option is not allowed"); 2242 goto restore_opts; 2243 } 2244 2245 if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) { 2246 err = -EINVAL; 2247 f2fs_warn(sbi, "disabling checkpoint not compatible with read-only"); 2248 goto restore_opts; 2249 } 2250 2251 /* 2252 * We stop the GC thread if FS is mounted as RO 2253 * or if background_gc = off is passed in mount 2254 * option. Also sync the filesystem. 2255 */ 2256 if ((*flags & SB_RDONLY) || 2257 (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF && 2258 !test_opt(sbi, GC_MERGE))) { 2259 if (sbi->gc_thread) { 2260 f2fs_stop_gc_thread(sbi); 2261 need_restart_gc = true; 2262 } 2263 } else if (!sbi->gc_thread) { 2264 err = f2fs_start_gc_thread(sbi); 2265 if (err) 2266 goto restore_opts; 2267 need_stop_gc = true; 2268 } 2269 2270 if (*flags & SB_RDONLY || 2271 F2FS_OPTION(sbi).whint_mode != org_mount_opt.whint_mode) { 2272 sync_inodes_sb(sb); 2273 2274 set_sbi_flag(sbi, SBI_IS_DIRTY); 2275 set_sbi_flag(sbi, SBI_IS_CLOSE); 2276 f2fs_sync_fs(sb, 1); 2277 clear_sbi_flag(sbi, SBI_IS_CLOSE); 2278 } 2279 2280 if ((*flags & SB_RDONLY) || test_opt(sbi, DISABLE_CHECKPOINT) || 2281 !test_opt(sbi, MERGE_CHECKPOINT)) { 2282 f2fs_stop_ckpt_thread(sbi); 2283 need_restart_ckpt = true; 2284 } else { 2285 err = f2fs_start_ckpt_thread(sbi); 2286 if (err) { 2287 f2fs_err(sbi, 2288 "Failed to start F2FS issue_checkpoint_thread (%d)", 2289 err); 2290 goto restore_gc; 2291 } 2292 need_stop_ckpt = true; 2293 } 2294 2295 /* 2296 * We stop issue flush thread if FS is mounted as RO 2297 * or if flush_merge is not passed in mount option. 2298 */ 2299 if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) { 2300 clear_opt(sbi, FLUSH_MERGE); 2301 f2fs_destroy_flush_cmd_control(sbi, false); 2302 need_restart_flush = true; 2303 } else { 2304 err = f2fs_create_flush_cmd_control(sbi); 2305 if (err) 2306 goto restore_ckpt; 2307 need_stop_flush = true; 2308 } 2309 2310 if (no_discard == !!test_opt(sbi, DISCARD)) { 2311 if (test_opt(sbi, DISCARD)) { 2312 err = f2fs_start_discard_thread(sbi); 2313 if (err) 2314 goto restore_flush; 2315 need_stop_discard = true; 2316 } else { 2317 dcc = SM_I(sbi)->dcc_info; 2318 f2fs_stop_discard_thread(sbi); 2319 if (atomic_read(&dcc->discard_cmd_cnt)) 2320 f2fs_issue_discard_timeout(sbi); 2321 need_restart_discard = true; 2322 } 2323 } 2324 2325 if (enable_checkpoint == !!test_opt(sbi, DISABLE_CHECKPOINT)) { 2326 if (test_opt(sbi, DISABLE_CHECKPOINT)) { 2327 err = f2fs_disable_checkpoint(sbi); 2328 if (err) 2329 goto restore_discard; 2330 } else { 2331 f2fs_enable_checkpoint(sbi); 2332 } 2333 } 2334 2335 skip: 2336 #ifdef CONFIG_QUOTA 2337 /* Release old quota file names */ 2338 for (i = 0; i < MAXQUOTAS; i++) 2339 kfree(org_mount_opt.s_qf_names[i]); 2340 #endif 2341 /* Update the POSIXACL Flag */ 2342 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) | 2343 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0); 2344 2345 limit_reserve_root(sbi); 2346 adjust_unusable_cap_perc(sbi); 2347 *flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME); 2348 return 0; 2349 restore_discard: 2350 if (need_restart_discard) { 2351 if (f2fs_start_discard_thread(sbi)) 2352 f2fs_warn(sbi, "discard has been stopped"); 2353 } else if (need_stop_discard) { 2354 f2fs_stop_discard_thread(sbi); 2355 } 2356 restore_flush: 2357 if (need_restart_flush) { 2358 if (f2fs_create_flush_cmd_control(sbi)) 2359 f2fs_warn(sbi, "background flush thread has stopped"); 2360 } else if (need_stop_flush) { 2361 clear_opt(sbi, FLUSH_MERGE); 2362 f2fs_destroy_flush_cmd_control(sbi, false); 2363 } 2364 restore_ckpt: 2365 if (need_restart_ckpt) { 2366 if (f2fs_start_ckpt_thread(sbi)) 2367 f2fs_warn(sbi, "background ckpt thread has stopped"); 2368 } else if (need_stop_ckpt) { 2369 f2fs_stop_ckpt_thread(sbi); 2370 } 2371 restore_gc: 2372 if (need_restart_gc) { 2373 if (f2fs_start_gc_thread(sbi)) 2374 f2fs_warn(sbi, "background gc thread has stopped"); 2375 } else if (need_stop_gc) { 2376 f2fs_stop_gc_thread(sbi); 2377 } 2378 restore_opts: 2379 #ifdef CONFIG_QUOTA 2380 F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt; 2381 for (i = 0; i < MAXQUOTAS; i++) { 2382 kfree(F2FS_OPTION(sbi).s_qf_names[i]); 2383 F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i]; 2384 } 2385 #endif 2386 sbi->mount_opt = org_mount_opt; 2387 sb->s_flags = old_sb_flags; 2388 return err; 2389 } 2390 2391 #ifdef CONFIG_QUOTA 2392 /* Read data from quotafile */ 2393 static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data, 2394 size_t len, loff_t off) 2395 { 2396 struct inode *inode = sb_dqopt(sb)->files[type]; 2397 struct address_space *mapping = inode->i_mapping; 2398 block_t blkidx = F2FS_BYTES_TO_BLK(off); 2399 int offset = off & (sb->s_blocksize - 1); 2400 int tocopy; 2401 size_t toread; 2402 loff_t i_size = i_size_read(inode); 2403 struct page *page; 2404 char *kaddr; 2405 2406 if (off > i_size) 2407 return 0; 2408 2409 if (off + len > i_size) 2410 len = i_size - off; 2411 toread = len; 2412 while (toread > 0) { 2413 tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread); 2414 repeat: 2415 page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS); 2416 if (IS_ERR(page)) { 2417 if (PTR_ERR(page) == -ENOMEM) { 2418 congestion_wait(BLK_RW_ASYNC, 2419 DEFAULT_IO_TIMEOUT); 2420 goto repeat; 2421 } 2422 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2423 return PTR_ERR(page); 2424 } 2425 2426 lock_page(page); 2427 2428 if (unlikely(page->mapping != mapping)) { 2429 f2fs_put_page(page, 1); 2430 goto repeat; 2431 } 2432 if (unlikely(!PageUptodate(page))) { 2433 f2fs_put_page(page, 1); 2434 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2435 return -EIO; 2436 } 2437 2438 kaddr = kmap_atomic(page); 2439 memcpy(data, kaddr + offset, tocopy); 2440 kunmap_atomic(kaddr); 2441 f2fs_put_page(page, 1); 2442 2443 offset = 0; 2444 toread -= tocopy; 2445 data += tocopy; 2446 blkidx++; 2447 } 2448 return len; 2449 } 2450 2451 /* Write to quotafile */ 2452 static ssize_t f2fs_quota_write(struct super_block *sb, int type, 2453 const char *data, size_t len, loff_t off) 2454 { 2455 struct inode *inode = sb_dqopt(sb)->files[type]; 2456 struct address_space *mapping = inode->i_mapping; 2457 const struct address_space_operations *a_ops = mapping->a_ops; 2458 int offset = off & (sb->s_blocksize - 1); 2459 size_t towrite = len; 2460 struct page *page; 2461 void *fsdata = NULL; 2462 char *kaddr; 2463 int err = 0; 2464 int tocopy; 2465 2466 while (towrite > 0) { 2467 tocopy = min_t(unsigned long, sb->s_blocksize - offset, 2468 towrite); 2469 retry: 2470 err = a_ops->write_begin(NULL, mapping, off, tocopy, 0, 2471 &page, &fsdata); 2472 if (unlikely(err)) { 2473 if (err == -ENOMEM) { 2474 congestion_wait(BLK_RW_ASYNC, 2475 DEFAULT_IO_TIMEOUT); 2476 goto retry; 2477 } 2478 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2479 break; 2480 } 2481 2482 kaddr = kmap_atomic(page); 2483 memcpy(kaddr + offset, data, tocopy); 2484 kunmap_atomic(kaddr); 2485 flush_dcache_page(page); 2486 2487 a_ops->write_end(NULL, mapping, off, tocopy, tocopy, 2488 page, fsdata); 2489 offset = 0; 2490 towrite -= tocopy; 2491 off += tocopy; 2492 data += tocopy; 2493 cond_resched(); 2494 } 2495 2496 if (len == towrite) 2497 return err; 2498 inode->i_mtime = inode->i_ctime = current_time(inode); 2499 f2fs_mark_inode_dirty_sync(inode, false); 2500 return len - towrite; 2501 } 2502 2503 int f2fs_dquot_initialize(struct inode *inode) 2504 { 2505 if (time_to_inject(F2FS_I_SB(inode), FAULT_DQUOT_INIT)) { 2506 f2fs_show_injection_info(F2FS_I_SB(inode), FAULT_DQUOT_INIT); 2507 return -ESRCH; 2508 } 2509 2510 return dquot_initialize(inode); 2511 } 2512 2513 static struct dquot **f2fs_get_dquots(struct inode *inode) 2514 { 2515 return F2FS_I(inode)->i_dquot; 2516 } 2517 2518 static qsize_t *f2fs_get_reserved_space(struct inode *inode) 2519 { 2520 return &F2FS_I(inode)->i_reserved_quota; 2521 } 2522 2523 static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type) 2524 { 2525 if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) { 2526 f2fs_err(sbi, "quota sysfile may be corrupted, skip loading it"); 2527 return 0; 2528 } 2529 2530 return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type], 2531 F2FS_OPTION(sbi).s_jquota_fmt, type); 2532 } 2533 2534 int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly) 2535 { 2536 int enabled = 0; 2537 int i, err; 2538 2539 if (f2fs_sb_has_quota_ino(sbi) && rdonly) { 2540 err = f2fs_enable_quotas(sbi->sb); 2541 if (err) { 2542 f2fs_err(sbi, "Cannot turn on quota_ino: %d", err); 2543 return 0; 2544 } 2545 return 1; 2546 } 2547 2548 for (i = 0; i < MAXQUOTAS; i++) { 2549 if (F2FS_OPTION(sbi).s_qf_names[i]) { 2550 err = f2fs_quota_on_mount(sbi, i); 2551 if (!err) { 2552 enabled = 1; 2553 continue; 2554 } 2555 f2fs_err(sbi, "Cannot turn on quotas: %d on %d", 2556 err, i); 2557 } 2558 } 2559 return enabled; 2560 } 2561 2562 static int f2fs_quota_enable(struct super_block *sb, int type, int format_id, 2563 unsigned int flags) 2564 { 2565 struct inode *qf_inode; 2566 unsigned long qf_inum; 2567 int err; 2568 2569 BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb))); 2570 2571 qf_inum = f2fs_qf_ino(sb, type); 2572 if (!qf_inum) 2573 return -EPERM; 2574 2575 qf_inode = f2fs_iget(sb, qf_inum); 2576 if (IS_ERR(qf_inode)) { 2577 f2fs_err(F2FS_SB(sb), "Bad quota inode %u:%lu", type, qf_inum); 2578 return PTR_ERR(qf_inode); 2579 } 2580 2581 /* Don't account quota for quota files to avoid recursion */ 2582 qf_inode->i_flags |= S_NOQUOTA; 2583 err = dquot_load_quota_inode(qf_inode, type, format_id, flags); 2584 iput(qf_inode); 2585 return err; 2586 } 2587 2588 static int f2fs_enable_quotas(struct super_block *sb) 2589 { 2590 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2591 int type, err = 0; 2592 unsigned long qf_inum; 2593 bool quota_mopt[MAXQUOTAS] = { 2594 test_opt(sbi, USRQUOTA), 2595 test_opt(sbi, GRPQUOTA), 2596 test_opt(sbi, PRJQUOTA), 2597 }; 2598 2599 if (is_set_ckpt_flags(F2FS_SB(sb), CP_QUOTA_NEED_FSCK_FLAG)) { 2600 f2fs_err(sbi, "quota file may be corrupted, skip loading it"); 2601 return 0; 2602 } 2603 2604 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE; 2605 2606 for (type = 0; type < MAXQUOTAS; type++) { 2607 qf_inum = f2fs_qf_ino(sb, type); 2608 if (qf_inum) { 2609 err = f2fs_quota_enable(sb, type, QFMT_VFS_V1, 2610 DQUOT_USAGE_ENABLED | 2611 (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0)); 2612 if (err) { 2613 f2fs_err(sbi, "Failed to enable quota tracking (type=%d, err=%d). Please run fsck to fix.", 2614 type, err); 2615 for (type--; type >= 0; type--) 2616 dquot_quota_off(sb, type); 2617 set_sbi_flag(F2FS_SB(sb), 2618 SBI_QUOTA_NEED_REPAIR); 2619 return err; 2620 } 2621 } 2622 } 2623 return 0; 2624 } 2625 2626 static int f2fs_quota_sync_file(struct f2fs_sb_info *sbi, int type) 2627 { 2628 struct quota_info *dqopt = sb_dqopt(sbi->sb); 2629 struct address_space *mapping = dqopt->files[type]->i_mapping; 2630 int ret = 0; 2631 2632 ret = dquot_writeback_dquots(sbi->sb, type); 2633 if (ret) 2634 goto out; 2635 2636 ret = filemap_fdatawrite(mapping); 2637 if (ret) 2638 goto out; 2639 2640 /* if we are using journalled quota */ 2641 if (is_journalled_quota(sbi)) 2642 goto out; 2643 2644 ret = filemap_fdatawait(mapping); 2645 2646 truncate_inode_pages(&dqopt->files[type]->i_data, 0); 2647 out: 2648 if (ret) 2649 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2650 return ret; 2651 } 2652 2653 int f2fs_quota_sync(struct super_block *sb, int type) 2654 { 2655 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2656 struct quota_info *dqopt = sb_dqopt(sb); 2657 int cnt; 2658 int ret; 2659 2660 /* 2661 * Now when everything is written we can discard the pagecache so 2662 * that userspace sees the changes. 2663 */ 2664 for (cnt = 0; cnt < MAXQUOTAS; cnt++) { 2665 2666 if (type != -1 && cnt != type) 2667 continue; 2668 2669 if (!sb_has_quota_active(sb, type)) 2670 return 0; 2671 2672 inode_lock(dqopt->files[cnt]); 2673 2674 /* 2675 * do_quotactl 2676 * f2fs_quota_sync 2677 * down_read(quota_sem) 2678 * dquot_writeback_dquots() 2679 * f2fs_dquot_commit 2680 * block_operation 2681 * down_read(quota_sem) 2682 */ 2683 f2fs_lock_op(sbi); 2684 down_read(&sbi->quota_sem); 2685 2686 ret = f2fs_quota_sync_file(sbi, cnt); 2687 2688 up_read(&sbi->quota_sem); 2689 f2fs_unlock_op(sbi); 2690 2691 inode_unlock(dqopt->files[cnt]); 2692 2693 if (ret) 2694 break; 2695 } 2696 return ret; 2697 } 2698 2699 static int f2fs_quota_on(struct super_block *sb, int type, int format_id, 2700 const struct path *path) 2701 { 2702 struct inode *inode; 2703 int err; 2704 2705 /* if quota sysfile exists, deny enabling quota with specific file */ 2706 if (f2fs_sb_has_quota_ino(F2FS_SB(sb))) { 2707 f2fs_err(F2FS_SB(sb), "quota sysfile already exists"); 2708 return -EBUSY; 2709 } 2710 2711 err = f2fs_quota_sync(sb, type); 2712 if (err) 2713 return err; 2714 2715 err = dquot_quota_on(sb, type, format_id, path); 2716 if (err) 2717 return err; 2718 2719 inode = d_inode(path->dentry); 2720 2721 inode_lock(inode); 2722 F2FS_I(inode)->i_flags |= F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL; 2723 f2fs_set_inode_flags(inode); 2724 inode_unlock(inode); 2725 f2fs_mark_inode_dirty_sync(inode, false); 2726 2727 return 0; 2728 } 2729 2730 static int __f2fs_quota_off(struct super_block *sb, int type) 2731 { 2732 struct inode *inode = sb_dqopt(sb)->files[type]; 2733 int err; 2734 2735 if (!inode || !igrab(inode)) 2736 return dquot_quota_off(sb, type); 2737 2738 err = f2fs_quota_sync(sb, type); 2739 if (err) 2740 goto out_put; 2741 2742 err = dquot_quota_off(sb, type); 2743 if (err || f2fs_sb_has_quota_ino(F2FS_SB(sb))) 2744 goto out_put; 2745 2746 inode_lock(inode); 2747 F2FS_I(inode)->i_flags &= ~(F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL); 2748 f2fs_set_inode_flags(inode); 2749 inode_unlock(inode); 2750 f2fs_mark_inode_dirty_sync(inode, false); 2751 out_put: 2752 iput(inode); 2753 return err; 2754 } 2755 2756 static int f2fs_quota_off(struct super_block *sb, int type) 2757 { 2758 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2759 int err; 2760 2761 err = __f2fs_quota_off(sb, type); 2762 2763 /* 2764 * quotactl can shutdown journalled quota, result in inconsistence 2765 * between quota record and fs data by following updates, tag the 2766 * flag to let fsck be aware of it. 2767 */ 2768 if (is_journalled_quota(sbi)) 2769 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2770 return err; 2771 } 2772 2773 void f2fs_quota_off_umount(struct super_block *sb) 2774 { 2775 int type; 2776 int err; 2777 2778 for (type = 0; type < MAXQUOTAS; type++) { 2779 err = __f2fs_quota_off(sb, type); 2780 if (err) { 2781 int ret = dquot_quota_off(sb, type); 2782 2783 f2fs_err(F2FS_SB(sb), "Fail to turn off disk quota (type: %d, err: %d, ret:%d), Please run fsck to fix it.", 2784 type, err, ret); 2785 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2786 } 2787 } 2788 /* 2789 * In case of checkpoint=disable, we must flush quota blocks. 2790 * This can cause NULL exception for node_inode in end_io, since 2791 * put_super already dropped it. 2792 */ 2793 sync_filesystem(sb); 2794 } 2795 2796 static void f2fs_truncate_quota_inode_pages(struct super_block *sb) 2797 { 2798 struct quota_info *dqopt = sb_dqopt(sb); 2799 int type; 2800 2801 for (type = 0; type < MAXQUOTAS; type++) { 2802 if (!dqopt->files[type]) 2803 continue; 2804 f2fs_inode_synced(dqopt->files[type]); 2805 } 2806 } 2807 2808 static int f2fs_dquot_commit(struct dquot *dquot) 2809 { 2810 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb); 2811 int ret; 2812 2813 down_read_nested(&sbi->quota_sem, SINGLE_DEPTH_NESTING); 2814 ret = dquot_commit(dquot); 2815 if (ret < 0) 2816 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2817 up_read(&sbi->quota_sem); 2818 return ret; 2819 } 2820 2821 static int f2fs_dquot_acquire(struct dquot *dquot) 2822 { 2823 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb); 2824 int ret; 2825 2826 down_read(&sbi->quota_sem); 2827 ret = dquot_acquire(dquot); 2828 if (ret < 0) 2829 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2830 up_read(&sbi->quota_sem); 2831 return ret; 2832 } 2833 2834 static int f2fs_dquot_release(struct dquot *dquot) 2835 { 2836 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb); 2837 int ret = dquot_release(dquot); 2838 2839 if (ret < 0) 2840 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2841 return ret; 2842 } 2843 2844 static int f2fs_dquot_mark_dquot_dirty(struct dquot *dquot) 2845 { 2846 struct super_block *sb = dquot->dq_sb; 2847 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2848 int ret = dquot_mark_dquot_dirty(dquot); 2849 2850 /* if we are using journalled quota */ 2851 if (is_journalled_quota(sbi)) 2852 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH); 2853 2854 return ret; 2855 } 2856 2857 static int f2fs_dquot_commit_info(struct super_block *sb, int type) 2858 { 2859 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2860 int ret = dquot_commit_info(sb, type); 2861 2862 if (ret < 0) 2863 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2864 return ret; 2865 } 2866 2867 static int f2fs_get_projid(struct inode *inode, kprojid_t *projid) 2868 { 2869 *projid = F2FS_I(inode)->i_projid; 2870 return 0; 2871 } 2872 2873 static const struct dquot_operations f2fs_quota_operations = { 2874 .get_reserved_space = f2fs_get_reserved_space, 2875 .write_dquot = f2fs_dquot_commit, 2876 .acquire_dquot = f2fs_dquot_acquire, 2877 .release_dquot = f2fs_dquot_release, 2878 .mark_dirty = f2fs_dquot_mark_dquot_dirty, 2879 .write_info = f2fs_dquot_commit_info, 2880 .alloc_dquot = dquot_alloc, 2881 .destroy_dquot = dquot_destroy, 2882 .get_projid = f2fs_get_projid, 2883 .get_next_id = dquot_get_next_id, 2884 }; 2885 2886 static const struct quotactl_ops f2fs_quotactl_ops = { 2887 .quota_on = f2fs_quota_on, 2888 .quota_off = f2fs_quota_off, 2889 .quota_sync = f2fs_quota_sync, 2890 .get_state = dquot_get_state, 2891 .set_info = dquot_set_dqinfo, 2892 .get_dqblk = dquot_get_dqblk, 2893 .set_dqblk = dquot_set_dqblk, 2894 .get_nextdqblk = dquot_get_next_dqblk, 2895 }; 2896 #else 2897 int f2fs_dquot_initialize(struct inode *inode) 2898 { 2899 return 0; 2900 } 2901 2902 int f2fs_quota_sync(struct super_block *sb, int type) 2903 { 2904 return 0; 2905 } 2906 2907 void f2fs_quota_off_umount(struct super_block *sb) 2908 { 2909 } 2910 #endif 2911 2912 static const struct super_operations f2fs_sops = { 2913 .alloc_inode = f2fs_alloc_inode, 2914 .free_inode = f2fs_free_inode, 2915 .drop_inode = f2fs_drop_inode, 2916 .write_inode = f2fs_write_inode, 2917 .dirty_inode = f2fs_dirty_inode, 2918 .show_options = f2fs_show_options, 2919 #ifdef CONFIG_QUOTA 2920 .quota_read = f2fs_quota_read, 2921 .quota_write = f2fs_quota_write, 2922 .get_dquots = f2fs_get_dquots, 2923 #endif 2924 .evict_inode = f2fs_evict_inode, 2925 .put_super = f2fs_put_super, 2926 .sync_fs = f2fs_sync_fs, 2927 .freeze_fs = f2fs_freeze, 2928 .unfreeze_fs = f2fs_unfreeze, 2929 .statfs = f2fs_statfs, 2930 .remount_fs = f2fs_remount, 2931 }; 2932 2933 #ifdef CONFIG_FS_ENCRYPTION 2934 static int f2fs_get_context(struct inode *inode, void *ctx, size_t len) 2935 { 2936 return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION, 2937 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, 2938 ctx, len, NULL); 2939 } 2940 2941 static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len, 2942 void *fs_data) 2943 { 2944 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 2945 2946 /* 2947 * Encrypting the root directory is not allowed because fsck 2948 * expects lost+found directory to exist and remain unencrypted 2949 * if LOST_FOUND feature is enabled. 2950 * 2951 */ 2952 if (f2fs_sb_has_lost_found(sbi) && 2953 inode->i_ino == F2FS_ROOT_INO(sbi)) 2954 return -EPERM; 2955 2956 return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION, 2957 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, 2958 ctx, len, fs_data, XATTR_CREATE); 2959 } 2960 2961 static const union fscrypt_policy *f2fs_get_dummy_policy(struct super_block *sb) 2962 { 2963 return F2FS_OPTION(F2FS_SB(sb)).dummy_enc_policy.policy; 2964 } 2965 2966 static bool f2fs_has_stable_inodes(struct super_block *sb) 2967 { 2968 return true; 2969 } 2970 2971 static void f2fs_get_ino_and_lblk_bits(struct super_block *sb, 2972 int *ino_bits_ret, int *lblk_bits_ret) 2973 { 2974 *ino_bits_ret = 8 * sizeof(nid_t); 2975 *lblk_bits_ret = 8 * sizeof(block_t); 2976 } 2977 2978 static int f2fs_get_num_devices(struct super_block *sb) 2979 { 2980 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2981 2982 if (f2fs_is_multi_device(sbi)) 2983 return sbi->s_ndevs; 2984 return 1; 2985 } 2986 2987 static void f2fs_get_devices(struct super_block *sb, 2988 struct request_queue **devs) 2989 { 2990 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2991 int i; 2992 2993 for (i = 0; i < sbi->s_ndevs; i++) 2994 devs[i] = bdev_get_queue(FDEV(i).bdev); 2995 } 2996 2997 static const struct fscrypt_operations f2fs_cryptops = { 2998 .key_prefix = "f2fs:", 2999 .get_context = f2fs_get_context, 3000 .set_context = f2fs_set_context, 3001 .get_dummy_policy = f2fs_get_dummy_policy, 3002 .empty_dir = f2fs_empty_dir, 3003 .has_stable_inodes = f2fs_has_stable_inodes, 3004 .get_ino_and_lblk_bits = f2fs_get_ino_and_lblk_bits, 3005 .get_num_devices = f2fs_get_num_devices, 3006 .get_devices = f2fs_get_devices, 3007 }; 3008 #endif 3009 3010 static struct inode *f2fs_nfs_get_inode(struct super_block *sb, 3011 u64 ino, u32 generation) 3012 { 3013 struct f2fs_sb_info *sbi = F2FS_SB(sb); 3014 struct inode *inode; 3015 3016 if (f2fs_check_nid_range(sbi, ino)) 3017 return ERR_PTR(-ESTALE); 3018 3019 /* 3020 * f2fs_iget isn't quite right if the inode is currently unallocated! 3021 * However f2fs_iget currently does appropriate checks to handle stale 3022 * inodes so everything is OK. 3023 */ 3024 inode = f2fs_iget(sb, ino); 3025 if (IS_ERR(inode)) 3026 return ERR_CAST(inode); 3027 if (unlikely(generation && inode->i_generation != generation)) { 3028 /* we didn't find the right inode.. */ 3029 iput(inode); 3030 return ERR_PTR(-ESTALE); 3031 } 3032 return inode; 3033 } 3034 3035 static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid, 3036 int fh_len, int fh_type) 3037 { 3038 return generic_fh_to_dentry(sb, fid, fh_len, fh_type, 3039 f2fs_nfs_get_inode); 3040 } 3041 3042 static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid, 3043 int fh_len, int fh_type) 3044 { 3045 return generic_fh_to_parent(sb, fid, fh_len, fh_type, 3046 f2fs_nfs_get_inode); 3047 } 3048 3049 static const struct export_operations f2fs_export_ops = { 3050 .fh_to_dentry = f2fs_fh_to_dentry, 3051 .fh_to_parent = f2fs_fh_to_parent, 3052 .get_parent = f2fs_get_parent, 3053 }; 3054 3055 loff_t max_file_blocks(struct inode *inode) 3056 { 3057 loff_t result = 0; 3058 loff_t leaf_count; 3059 3060 /* 3061 * note: previously, result is equal to (DEF_ADDRS_PER_INODE - 3062 * DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more 3063 * space in inode.i_addr, it will be more safe to reassign 3064 * result as zero. 3065 */ 3066 3067 if (inode && f2fs_compressed_file(inode)) 3068 leaf_count = ADDRS_PER_BLOCK(inode); 3069 else 3070 leaf_count = DEF_ADDRS_PER_BLOCK; 3071 3072 /* two direct node blocks */ 3073 result += (leaf_count * 2); 3074 3075 /* two indirect node blocks */ 3076 leaf_count *= NIDS_PER_BLOCK; 3077 result += (leaf_count * 2); 3078 3079 /* one double indirect node block */ 3080 leaf_count *= NIDS_PER_BLOCK; 3081 result += leaf_count; 3082 3083 return result; 3084 } 3085 3086 static int __f2fs_commit_super(struct buffer_head *bh, 3087 struct f2fs_super_block *super) 3088 { 3089 lock_buffer(bh); 3090 if (super) 3091 memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super)); 3092 set_buffer_dirty(bh); 3093 unlock_buffer(bh); 3094 3095 /* it's rare case, we can do fua all the time */ 3096 return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA); 3097 } 3098 3099 static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi, 3100 struct buffer_head *bh) 3101 { 3102 struct f2fs_super_block *raw_super = (struct f2fs_super_block *) 3103 (bh->b_data + F2FS_SUPER_OFFSET); 3104 struct super_block *sb = sbi->sb; 3105 u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr); 3106 u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr); 3107 u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr); 3108 u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr); 3109 u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr); 3110 u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr); 3111 u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt); 3112 u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit); 3113 u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat); 3114 u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa); 3115 u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main); 3116 u32 segment_count = le32_to_cpu(raw_super->segment_count); 3117 u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); 3118 u64 main_end_blkaddr = main_blkaddr + 3119 (segment_count_main << log_blocks_per_seg); 3120 u64 seg_end_blkaddr = segment0_blkaddr + 3121 (segment_count << log_blocks_per_seg); 3122 3123 if (segment0_blkaddr != cp_blkaddr) { 3124 f2fs_info(sbi, "Mismatch start address, segment0(%u) cp_blkaddr(%u)", 3125 segment0_blkaddr, cp_blkaddr); 3126 return true; 3127 } 3128 3129 if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) != 3130 sit_blkaddr) { 3131 f2fs_info(sbi, "Wrong CP boundary, start(%u) end(%u) blocks(%u)", 3132 cp_blkaddr, sit_blkaddr, 3133 segment_count_ckpt << log_blocks_per_seg); 3134 return true; 3135 } 3136 3137 if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) != 3138 nat_blkaddr) { 3139 f2fs_info(sbi, "Wrong SIT boundary, start(%u) end(%u) blocks(%u)", 3140 sit_blkaddr, nat_blkaddr, 3141 segment_count_sit << log_blocks_per_seg); 3142 return true; 3143 } 3144 3145 if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) != 3146 ssa_blkaddr) { 3147 f2fs_info(sbi, "Wrong NAT boundary, start(%u) end(%u) blocks(%u)", 3148 nat_blkaddr, ssa_blkaddr, 3149 segment_count_nat << log_blocks_per_seg); 3150 return true; 3151 } 3152 3153 if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) != 3154 main_blkaddr) { 3155 f2fs_info(sbi, "Wrong SSA boundary, start(%u) end(%u) blocks(%u)", 3156 ssa_blkaddr, main_blkaddr, 3157 segment_count_ssa << log_blocks_per_seg); 3158 return true; 3159 } 3160 3161 if (main_end_blkaddr > seg_end_blkaddr) { 3162 f2fs_info(sbi, "Wrong MAIN_AREA boundary, start(%u) end(%llu) block(%u)", 3163 main_blkaddr, seg_end_blkaddr, 3164 segment_count_main << log_blocks_per_seg); 3165 return true; 3166 } else if (main_end_blkaddr < seg_end_blkaddr) { 3167 int err = 0; 3168 char *res; 3169 3170 /* fix in-memory information all the time */ 3171 raw_super->segment_count = cpu_to_le32((main_end_blkaddr - 3172 segment0_blkaddr) >> log_blocks_per_seg); 3173 3174 if (f2fs_readonly(sb) || bdev_read_only(sb->s_bdev)) { 3175 set_sbi_flag(sbi, SBI_NEED_SB_WRITE); 3176 res = "internally"; 3177 } else { 3178 err = __f2fs_commit_super(bh, NULL); 3179 res = err ? "failed" : "done"; 3180 } 3181 f2fs_info(sbi, "Fix alignment : %s, start(%u) end(%llu) block(%u)", 3182 res, main_blkaddr, seg_end_blkaddr, 3183 segment_count_main << log_blocks_per_seg); 3184 if (err) 3185 return true; 3186 } 3187 return false; 3188 } 3189 3190 static int sanity_check_raw_super(struct f2fs_sb_info *sbi, 3191 struct buffer_head *bh) 3192 { 3193 block_t segment_count, segs_per_sec, secs_per_zone, segment_count_main; 3194 block_t total_sections, blocks_per_seg; 3195 struct f2fs_super_block *raw_super = (struct f2fs_super_block *) 3196 (bh->b_data + F2FS_SUPER_OFFSET); 3197 size_t crc_offset = 0; 3198 __u32 crc = 0; 3199 3200 if (le32_to_cpu(raw_super->magic) != F2FS_SUPER_MAGIC) { 3201 f2fs_info(sbi, "Magic Mismatch, valid(0x%x) - read(0x%x)", 3202 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic)); 3203 return -EINVAL; 3204 } 3205 3206 /* Check checksum_offset and crc in superblock */ 3207 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_SB_CHKSUM)) { 3208 crc_offset = le32_to_cpu(raw_super->checksum_offset); 3209 if (crc_offset != 3210 offsetof(struct f2fs_super_block, crc)) { 3211 f2fs_info(sbi, "Invalid SB checksum offset: %zu", 3212 crc_offset); 3213 return -EFSCORRUPTED; 3214 } 3215 crc = le32_to_cpu(raw_super->crc); 3216 if (!f2fs_crc_valid(sbi, crc, raw_super, crc_offset)) { 3217 f2fs_info(sbi, "Invalid SB checksum value: %u", crc); 3218 return -EFSCORRUPTED; 3219 } 3220 } 3221 3222 /* Currently, support only 4KB block size */ 3223 if (le32_to_cpu(raw_super->log_blocksize) != F2FS_BLKSIZE_BITS) { 3224 f2fs_info(sbi, "Invalid log_blocksize (%u), supports only %u", 3225 le32_to_cpu(raw_super->log_blocksize), 3226 F2FS_BLKSIZE_BITS); 3227 return -EFSCORRUPTED; 3228 } 3229 3230 /* check log blocks per segment */ 3231 if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) { 3232 f2fs_info(sbi, "Invalid log blocks per segment (%u)", 3233 le32_to_cpu(raw_super->log_blocks_per_seg)); 3234 return -EFSCORRUPTED; 3235 } 3236 3237 /* Currently, support 512/1024/2048/4096 bytes sector size */ 3238 if (le32_to_cpu(raw_super->log_sectorsize) > 3239 F2FS_MAX_LOG_SECTOR_SIZE || 3240 le32_to_cpu(raw_super->log_sectorsize) < 3241 F2FS_MIN_LOG_SECTOR_SIZE) { 3242 f2fs_info(sbi, "Invalid log sectorsize (%u)", 3243 le32_to_cpu(raw_super->log_sectorsize)); 3244 return -EFSCORRUPTED; 3245 } 3246 if (le32_to_cpu(raw_super->log_sectors_per_block) + 3247 le32_to_cpu(raw_super->log_sectorsize) != 3248 F2FS_MAX_LOG_SECTOR_SIZE) { 3249 f2fs_info(sbi, "Invalid log sectors per block(%u) log sectorsize(%u)", 3250 le32_to_cpu(raw_super->log_sectors_per_block), 3251 le32_to_cpu(raw_super->log_sectorsize)); 3252 return -EFSCORRUPTED; 3253 } 3254 3255 segment_count = le32_to_cpu(raw_super->segment_count); 3256 segment_count_main = le32_to_cpu(raw_super->segment_count_main); 3257 segs_per_sec = le32_to_cpu(raw_super->segs_per_sec); 3258 secs_per_zone = le32_to_cpu(raw_super->secs_per_zone); 3259 total_sections = le32_to_cpu(raw_super->section_count); 3260 3261 /* blocks_per_seg should be 512, given the above check */ 3262 blocks_per_seg = 1 << le32_to_cpu(raw_super->log_blocks_per_seg); 3263 3264 if (segment_count > F2FS_MAX_SEGMENT || 3265 segment_count < F2FS_MIN_SEGMENTS) { 3266 f2fs_info(sbi, "Invalid segment count (%u)", segment_count); 3267 return -EFSCORRUPTED; 3268 } 3269 3270 if (total_sections > segment_count_main || total_sections < 1 || 3271 segs_per_sec > segment_count || !segs_per_sec) { 3272 f2fs_info(sbi, "Invalid segment/section count (%u, %u x %u)", 3273 segment_count, total_sections, segs_per_sec); 3274 return -EFSCORRUPTED; 3275 } 3276 3277 if (segment_count_main != total_sections * segs_per_sec) { 3278 f2fs_info(sbi, "Invalid segment/section count (%u != %u * %u)", 3279 segment_count_main, total_sections, segs_per_sec); 3280 return -EFSCORRUPTED; 3281 } 3282 3283 if ((segment_count / segs_per_sec) < total_sections) { 3284 f2fs_info(sbi, "Small segment_count (%u < %u * %u)", 3285 segment_count, segs_per_sec, total_sections); 3286 return -EFSCORRUPTED; 3287 } 3288 3289 if (segment_count > (le64_to_cpu(raw_super->block_count) >> 9)) { 3290 f2fs_info(sbi, "Wrong segment_count / block_count (%u > %llu)", 3291 segment_count, le64_to_cpu(raw_super->block_count)); 3292 return -EFSCORRUPTED; 3293 } 3294 3295 if (RDEV(0).path[0]) { 3296 block_t dev_seg_count = le32_to_cpu(RDEV(0).total_segments); 3297 int i = 1; 3298 3299 while (i < MAX_DEVICES && RDEV(i).path[0]) { 3300 dev_seg_count += le32_to_cpu(RDEV(i).total_segments); 3301 i++; 3302 } 3303 if (segment_count != dev_seg_count) { 3304 f2fs_info(sbi, "Segment count (%u) mismatch with total segments from devices (%u)", 3305 segment_count, dev_seg_count); 3306 return -EFSCORRUPTED; 3307 } 3308 } else { 3309 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_BLKZONED) && 3310 !bdev_is_zoned(sbi->sb->s_bdev)) { 3311 f2fs_info(sbi, "Zoned block device path is missing"); 3312 return -EFSCORRUPTED; 3313 } 3314 } 3315 3316 if (secs_per_zone > total_sections || !secs_per_zone) { 3317 f2fs_info(sbi, "Wrong secs_per_zone / total_sections (%u, %u)", 3318 secs_per_zone, total_sections); 3319 return -EFSCORRUPTED; 3320 } 3321 if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION || 3322 raw_super->hot_ext_count > F2FS_MAX_EXTENSION || 3323 (le32_to_cpu(raw_super->extension_count) + 3324 raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) { 3325 f2fs_info(sbi, "Corrupted extension count (%u + %u > %u)", 3326 le32_to_cpu(raw_super->extension_count), 3327 raw_super->hot_ext_count, 3328 F2FS_MAX_EXTENSION); 3329 return -EFSCORRUPTED; 3330 } 3331 3332 if (le32_to_cpu(raw_super->cp_payload) >= 3333 (blocks_per_seg - F2FS_CP_PACKS - 3334 NR_CURSEG_PERSIST_TYPE)) { 3335 f2fs_info(sbi, "Insane cp_payload (%u >= %u)", 3336 le32_to_cpu(raw_super->cp_payload), 3337 blocks_per_seg - F2FS_CP_PACKS - 3338 NR_CURSEG_PERSIST_TYPE); 3339 return -EFSCORRUPTED; 3340 } 3341 3342 /* check reserved ino info */ 3343 if (le32_to_cpu(raw_super->node_ino) != 1 || 3344 le32_to_cpu(raw_super->meta_ino) != 2 || 3345 le32_to_cpu(raw_super->root_ino) != 3) { 3346 f2fs_info(sbi, "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)", 3347 le32_to_cpu(raw_super->node_ino), 3348 le32_to_cpu(raw_super->meta_ino), 3349 le32_to_cpu(raw_super->root_ino)); 3350 return -EFSCORRUPTED; 3351 } 3352 3353 /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */ 3354 if (sanity_check_area_boundary(sbi, bh)) 3355 return -EFSCORRUPTED; 3356 3357 return 0; 3358 } 3359 3360 int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi) 3361 { 3362 unsigned int total, fsmeta; 3363 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 3364 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 3365 unsigned int ovp_segments, reserved_segments; 3366 unsigned int main_segs, blocks_per_seg; 3367 unsigned int sit_segs, nat_segs; 3368 unsigned int sit_bitmap_size, nat_bitmap_size; 3369 unsigned int log_blocks_per_seg; 3370 unsigned int segment_count_main; 3371 unsigned int cp_pack_start_sum, cp_payload; 3372 block_t user_block_count, valid_user_blocks; 3373 block_t avail_node_count, valid_node_count; 3374 unsigned int nat_blocks, nat_bits_bytes, nat_bits_blocks; 3375 int i, j; 3376 3377 total = le32_to_cpu(raw_super->segment_count); 3378 fsmeta = le32_to_cpu(raw_super->segment_count_ckpt); 3379 sit_segs = le32_to_cpu(raw_super->segment_count_sit); 3380 fsmeta += sit_segs; 3381 nat_segs = le32_to_cpu(raw_super->segment_count_nat); 3382 fsmeta += nat_segs; 3383 fsmeta += le32_to_cpu(ckpt->rsvd_segment_count); 3384 fsmeta += le32_to_cpu(raw_super->segment_count_ssa); 3385 3386 if (unlikely(fsmeta >= total)) 3387 return 1; 3388 3389 ovp_segments = le32_to_cpu(ckpt->overprov_segment_count); 3390 reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count); 3391 3392 if (!f2fs_sb_has_readonly(sbi) && 3393 unlikely(fsmeta < F2FS_MIN_META_SEGMENTS || 3394 ovp_segments == 0 || reserved_segments == 0)) { 3395 f2fs_err(sbi, "Wrong layout: check mkfs.f2fs version"); 3396 return 1; 3397 } 3398 user_block_count = le64_to_cpu(ckpt->user_block_count); 3399 segment_count_main = le32_to_cpu(raw_super->segment_count_main) + 3400 (f2fs_sb_has_readonly(sbi) ? 1 : 0); 3401 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); 3402 if (!user_block_count || user_block_count >= 3403 segment_count_main << log_blocks_per_seg) { 3404 f2fs_err(sbi, "Wrong user_block_count: %u", 3405 user_block_count); 3406 return 1; 3407 } 3408 3409 valid_user_blocks = le64_to_cpu(ckpt->valid_block_count); 3410 if (valid_user_blocks > user_block_count) { 3411 f2fs_err(sbi, "Wrong valid_user_blocks: %u, user_block_count: %u", 3412 valid_user_blocks, user_block_count); 3413 return 1; 3414 } 3415 3416 valid_node_count = le32_to_cpu(ckpt->valid_node_count); 3417 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM; 3418 if (valid_node_count > avail_node_count) { 3419 f2fs_err(sbi, "Wrong valid_node_count: %u, avail_node_count: %u", 3420 valid_node_count, avail_node_count); 3421 return 1; 3422 } 3423 3424 main_segs = le32_to_cpu(raw_super->segment_count_main); 3425 blocks_per_seg = sbi->blocks_per_seg; 3426 3427 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { 3428 if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs || 3429 le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg) 3430 return 1; 3431 3432 if (f2fs_sb_has_readonly(sbi)) 3433 goto check_data; 3434 3435 for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) { 3436 if (le32_to_cpu(ckpt->cur_node_segno[i]) == 3437 le32_to_cpu(ckpt->cur_node_segno[j])) { 3438 f2fs_err(sbi, "Node segment (%u, %u) has the same segno: %u", 3439 i, j, 3440 le32_to_cpu(ckpt->cur_node_segno[i])); 3441 return 1; 3442 } 3443 } 3444 } 3445 check_data: 3446 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) { 3447 if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs || 3448 le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg) 3449 return 1; 3450 3451 if (f2fs_sb_has_readonly(sbi)) 3452 goto skip_cross; 3453 3454 for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) { 3455 if (le32_to_cpu(ckpt->cur_data_segno[i]) == 3456 le32_to_cpu(ckpt->cur_data_segno[j])) { 3457 f2fs_err(sbi, "Data segment (%u, %u) has the same segno: %u", 3458 i, j, 3459 le32_to_cpu(ckpt->cur_data_segno[i])); 3460 return 1; 3461 } 3462 } 3463 } 3464 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { 3465 for (j = 0; j < NR_CURSEG_DATA_TYPE; j++) { 3466 if (le32_to_cpu(ckpt->cur_node_segno[i]) == 3467 le32_to_cpu(ckpt->cur_data_segno[j])) { 3468 f2fs_err(sbi, "Node segment (%u) and Data segment (%u) has the same segno: %u", 3469 i, j, 3470 le32_to_cpu(ckpt->cur_node_segno[i])); 3471 return 1; 3472 } 3473 } 3474 } 3475 skip_cross: 3476 sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize); 3477 nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize); 3478 3479 if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 || 3480 nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) { 3481 f2fs_err(sbi, "Wrong bitmap size: sit: %u, nat:%u", 3482 sit_bitmap_size, nat_bitmap_size); 3483 return 1; 3484 } 3485 3486 cp_pack_start_sum = __start_sum_addr(sbi); 3487 cp_payload = __cp_payload(sbi); 3488 if (cp_pack_start_sum < cp_payload + 1 || 3489 cp_pack_start_sum > blocks_per_seg - 1 - 3490 NR_CURSEG_PERSIST_TYPE) { 3491 f2fs_err(sbi, "Wrong cp_pack_start_sum: %u", 3492 cp_pack_start_sum); 3493 return 1; 3494 } 3495 3496 if (__is_set_ckpt_flags(ckpt, CP_LARGE_NAT_BITMAP_FLAG) && 3497 le32_to_cpu(ckpt->checksum_offset) != CP_MIN_CHKSUM_OFFSET) { 3498 f2fs_warn(sbi, "using deprecated layout of large_nat_bitmap, " 3499 "please run fsck v1.13.0 or higher to repair, chksum_offset: %u, " 3500 "fixed with patch: \"f2fs-tools: relocate chksum_offset for large_nat_bitmap feature\"", 3501 le32_to_cpu(ckpt->checksum_offset)); 3502 return 1; 3503 } 3504 3505 nat_blocks = nat_segs << log_blocks_per_seg; 3506 nat_bits_bytes = nat_blocks / BITS_PER_BYTE; 3507 nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8); 3508 if (__is_set_ckpt_flags(ckpt, CP_NAT_BITS_FLAG) && 3509 (cp_payload + F2FS_CP_PACKS + 3510 NR_CURSEG_PERSIST_TYPE + nat_bits_blocks >= blocks_per_seg)) { 3511 f2fs_warn(sbi, "Insane cp_payload: %u, nat_bits_blocks: %u)", 3512 cp_payload, nat_bits_blocks); 3513 return 1; 3514 } 3515 3516 if (unlikely(f2fs_cp_error(sbi))) { 3517 f2fs_err(sbi, "A bug case: need to run fsck"); 3518 return 1; 3519 } 3520 return 0; 3521 } 3522 3523 static void init_sb_info(struct f2fs_sb_info *sbi) 3524 { 3525 struct f2fs_super_block *raw_super = sbi->raw_super; 3526 int i; 3527 3528 sbi->log_sectors_per_block = 3529 le32_to_cpu(raw_super->log_sectors_per_block); 3530 sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize); 3531 sbi->blocksize = 1 << sbi->log_blocksize; 3532 sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); 3533 sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg; 3534 sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec); 3535 sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone); 3536 sbi->total_sections = le32_to_cpu(raw_super->section_count); 3537 sbi->total_node_count = 3538 (le32_to_cpu(raw_super->segment_count_nat) / 2) 3539 * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK; 3540 F2FS_ROOT_INO(sbi) = le32_to_cpu(raw_super->root_ino); 3541 F2FS_NODE_INO(sbi) = le32_to_cpu(raw_super->node_ino); 3542 F2FS_META_INO(sbi) = le32_to_cpu(raw_super->meta_ino); 3543 sbi->cur_victim_sec = NULL_SECNO; 3544 sbi->next_victim_seg[BG_GC] = NULL_SEGNO; 3545 sbi->next_victim_seg[FG_GC] = NULL_SEGNO; 3546 sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH; 3547 sbi->migration_granularity = sbi->segs_per_sec; 3548 sbi->seq_file_ra_mul = MIN_RA_MUL; 3549 sbi->max_fragment_chunk = DEF_FRAGMENT_SIZE; 3550 sbi->max_fragment_hole = DEF_FRAGMENT_SIZE; 3551 3552 sbi->dir_level = DEF_DIR_LEVEL; 3553 sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL; 3554 sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL; 3555 sbi->interval_time[DISCARD_TIME] = DEF_IDLE_INTERVAL; 3556 sbi->interval_time[GC_TIME] = DEF_IDLE_INTERVAL; 3557 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_INTERVAL; 3558 sbi->interval_time[UMOUNT_DISCARD_TIMEOUT] = 3559 DEF_UMOUNT_DISCARD_TIMEOUT; 3560 clear_sbi_flag(sbi, SBI_NEED_FSCK); 3561 3562 for (i = 0; i < NR_COUNT_TYPE; i++) 3563 atomic_set(&sbi->nr_pages[i], 0); 3564 3565 for (i = 0; i < META; i++) 3566 atomic_set(&sbi->wb_sync_req[i], 0); 3567 3568 INIT_LIST_HEAD(&sbi->s_list); 3569 mutex_init(&sbi->umount_mutex); 3570 init_rwsem(&sbi->io_order_lock); 3571 spin_lock_init(&sbi->cp_lock); 3572 3573 sbi->dirty_device = 0; 3574 spin_lock_init(&sbi->dev_lock); 3575 3576 init_rwsem(&sbi->sb_lock); 3577 init_rwsem(&sbi->pin_sem); 3578 } 3579 3580 static int init_percpu_info(struct f2fs_sb_info *sbi) 3581 { 3582 int err; 3583 3584 err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL); 3585 if (err) 3586 return err; 3587 3588 err = percpu_counter_init(&sbi->total_valid_inode_count, 0, 3589 GFP_KERNEL); 3590 if (err) 3591 percpu_counter_destroy(&sbi->alloc_valid_block_count); 3592 3593 return err; 3594 } 3595 3596 #ifdef CONFIG_BLK_DEV_ZONED 3597 3598 struct f2fs_report_zones_args { 3599 struct f2fs_dev_info *dev; 3600 bool zone_cap_mismatch; 3601 }; 3602 3603 static int f2fs_report_zone_cb(struct blk_zone *zone, unsigned int idx, 3604 void *data) 3605 { 3606 struct f2fs_report_zones_args *rz_args = data; 3607 3608 if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL) 3609 return 0; 3610 3611 set_bit(idx, rz_args->dev->blkz_seq); 3612 rz_args->dev->zone_capacity_blocks[idx] = zone->capacity >> 3613 F2FS_LOG_SECTORS_PER_BLOCK; 3614 if (zone->len != zone->capacity && !rz_args->zone_cap_mismatch) 3615 rz_args->zone_cap_mismatch = true; 3616 3617 return 0; 3618 } 3619 3620 static int init_blkz_info(struct f2fs_sb_info *sbi, int devi) 3621 { 3622 struct block_device *bdev = FDEV(devi).bdev; 3623 sector_t nr_sectors = bdev_nr_sectors(bdev); 3624 struct f2fs_report_zones_args rep_zone_arg; 3625 int ret; 3626 3627 if (!f2fs_sb_has_blkzoned(sbi)) 3628 return 0; 3629 3630 if (sbi->blocks_per_blkz && sbi->blocks_per_blkz != 3631 SECTOR_TO_BLOCK(bdev_zone_sectors(bdev))) 3632 return -EINVAL; 3633 sbi->blocks_per_blkz = SECTOR_TO_BLOCK(bdev_zone_sectors(bdev)); 3634 if (sbi->log_blocks_per_blkz && sbi->log_blocks_per_blkz != 3635 __ilog2_u32(sbi->blocks_per_blkz)) 3636 return -EINVAL; 3637 sbi->log_blocks_per_blkz = __ilog2_u32(sbi->blocks_per_blkz); 3638 FDEV(devi).nr_blkz = SECTOR_TO_BLOCK(nr_sectors) >> 3639 sbi->log_blocks_per_blkz; 3640 if (nr_sectors & (bdev_zone_sectors(bdev) - 1)) 3641 FDEV(devi).nr_blkz++; 3642 3643 FDEV(devi).blkz_seq = f2fs_kvzalloc(sbi, 3644 BITS_TO_LONGS(FDEV(devi).nr_blkz) 3645 * sizeof(unsigned long), 3646 GFP_KERNEL); 3647 if (!FDEV(devi).blkz_seq) 3648 return -ENOMEM; 3649 3650 /* Get block zones type and zone-capacity */ 3651 FDEV(devi).zone_capacity_blocks = f2fs_kzalloc(sbi, 3652 FDEV(devi).nr_blkz * sizeof(block_t), 3653 GFP_KERNEL); 3654 if (!FDEV(devi).zone_capacity_blocks) 3655 return -ENOMEM; 3656 3657 rep_zone_arg.dev = &FDEV(devi); 3658 rep_zone_arg.zone_cap_mismatch = false; 3659 3660 ret = blkdev_report_zones(bdev, 0, BLK_ALL_ZONES, f2fs_report_zone_cb, 3661 &rep_zone_arg); 3662 if (ret < 0) 3663 return ret; 3664 3665 if (!rep_zone_arg.zone_cap_mismatch) { 3666 kfree(FDEV(devi).zone_capacity_blocks); 3667 FDEV(devi).zone_capacity_blocks = NULL; 3668 } 3669 3670 return 0; 3671 } 3672 #endif 3673 3674 /* 3675 * Read f2fs raw super block. 3676 * Because we have two copies of super block, so read both of them 3677 * to get the first valid one. If any one of them is broken, we pass 3678 * them recovery flag back to the caller. 3679 */ 3680 static int read_raw_super_block(struct f2fs_sb_info *sbi, 3681 struct f2fs_super_block **raw_super, 3682 int *valid_super_block, int *recovery) 3683 { 3684 struct super_block *sb = sbi->sb; 3685 int block; 3686 struct buffer_head *bh; 3687 struct f2fs_super_block *super; 3688 int err = 0; 3689 3690 super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL); 3691 if (!super) 3692 return -ENOMEM; 3693 3694 for (block = 0; block < 2; block++) { 3695 bh = sb_bread(sb, block); 3696 if (!bh) { 3697 f2fs_err(sbi, "Unable to read %dth superblock", 3698 block + 1); 3699 err = -EIO; 3700 *recovery = 1; 3701 continue; 3702 } 3703 3704 /* sanity checking of raw super */ 3705 err = sanity_check_raw_super(sbi, bh); 3706 if (err) { 3707 f2fs_err(sbi, "Can't find valid F2FS filesystem in %dth superblock", 3708 block + 1); 3709 brelse(bh); 3710 *recovery = 1; 3711 continue; 3712 } 3713 3714 if (!*raw_super) { 3715 memcpy(super, bh->b_data + F2FS_SUPER_OFFSET, 3716 sizeof(*super)); 3717 *valid_super_block = block; 3718 *raw_super = super; 3719 } 3720 brelse(bh); 3721 } 3722 3723 /* No valid superblock */ 3724 if (!*raw_super) 3725 kfree(super); 3726 else 3727 err = 0; 3728 3729 return err; 3730 } 3731 3732 int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover) 3733 { 3734 struct buffer_head *bh; 3735 __u32 crc = 0; 3736 int err; 3737 3738 if ((recover && f2fs_readonly(sbi->sb)) || 3739 bdev_read_only(sbi->sb->s_bdev)) { 3740 set_sbi_flag(sbi, SBI_NEED_SB_WRITE); 3741 return -EROFS; 3742 } 3743 3744 /* we should update superblock crc here */ 3745 if (!recover && f2fs_sb_has_sb_chksum(sbi)) { 3746 crc = f2fs_crc32(sbi, F2FS_RAW_SUPER(sbi), 3747 offsetof(struct f2fs_super_block, crc)); 3748 F2FS_RAW_SUPER(sbi)->crc = cpu_to_le32(crc); 3749 } 3750 3751 /* write back-up superblock first */ 3752 bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1); 3753 if (!bh) 3754 return -EIO; 3755 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi)); 3756 brelse(bh); 3757 3758 /* if we are in recovery path, skip writing valid superblock */ 3759 if (recover || err) 3760 return err; 3761 3762 /* write current valid superblock */ 3763 bh = sb_bread(sbi->sb, sbi->valid_super_block); 3764 if (!bh) 3765 return -EIO; 3766 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi)); 3767 brelse(bh); 3768 return err; 3769 } 3770 3771 static int f2fs_scan_devices(struct f2fs_sb_info *sbi) 3772 { 3773 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 3774 unsigned int max_devices = MAX_DEVICES; 3775 unsigned int logical_blksize; 3776 int i; 3777 3778 /* Initialize single device information */ 3779 if (!RDEV(0).path[0]) { 3780 if (!bdev_is_zoned(sbi->sb->s_bdev)) 3781 return 0; 3782 max_devices = 1; 3783 } 3784 3785 /* 3786 * Initialize multiple devices information, or single 3787 * zoned block device information. 3788 */ 3789 sbi->devs = f2fs_kzalloc(sbi, 3790 array_size(max_devices, 3791 sizeof(struct f2fs_dev_info)), 3792 GFP_KERNEL); 3793 if (!sbi->devs) 3794 return -ENOMEM; 3795 3796 logical_blksize = bdev_logical_block_size(sbi->sb->s_bdev); 3797 sbi->aligned_blksize = true; 3798 3799 for (i = 0; i < max_devices; i++) { 3800 3801 if (i > 0 && !RDEV(i).path[0]) 3802 break; 3803 3804 if (max_devices == 1) { 3805 /* Single zoned block device mount */ 3806 FDEV(0).bdev = 3807 blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev, 3808 sbi->sb->s_mode, sbi->sb->s_type); 3809 } else { 3810 /* Multi-device mount */ 3811 memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN); 3812 FDEV(i).total_segments = 3813 le32_to_cpu(RDEV(i).total_segments); 3814 if (i == 0) { 3815 FDEV(i).start_blk = 0; 3816 FDEV(i).end_blk = FDEV(i).start_blk + 3817 (FDEV(i).total_segments << 3818 sbi->log_blocks_per_seg) - 1 + 3819 le32_to_cpu(raw_super->segment0_blkaddr); 3820 } else { 3821 FDEV(i).start_blk = FDEV(i - 1).end_blk + 1; 3822 FDEV(i).end_blk = FDEV(i).start_blk + 3823 (FDEV(i).total_segments << 3824 sbi->log_blocks_per_seg) - 1; 3825 } 3826 FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path, 3827 sbi->sb->s_mode, sbi->sb->s_type); 3828 } 3829 if (IS_ERR(FDEV(i).bdev)) 3830 return PTR_ERR(FDEV(i).bdev); 3831 3832 /* to release errored devices */ 3833 sbi->s_ndevs = i + 1; 3834 3835 if (logical_blksize != bdev_logical_block_size(FDEV(i).bdev)) 3836 sbi->aligned_blksize = false; 3837 3838 #ifdef CONFIG_BLK_DEV_ZONED 3839 if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM && 3840 !f2fs_sb_has_blkzoned(sbi)) { 3841 f2fs_err(sbi, "Zoned block device feature not enabled"); 3842 return -EINVAL; 3843 } 3844 if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) { 3845 if (init_blkz_info(sbi, i)) { 3846 f2fs_err(sbi, "Failed to initialize F2FS blkzone information"); 3847 return -EINVAL; 3848 } 3849 if (max_devices == 1) 3850 break; 3851 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)", 3852 i, FDEV(i).path, 3853 FDEV(i).total_segments, 3854 FDEV(i).start_blk, FDEV(i).end_blk, 3855 bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ? 3856 "Host-aware" : "Host-managed"); 3857 continue; 3858 } 3859 #endif 3860 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x", 3861 i, FDEV(i).path, 3862 FDEV(i).total_segments, 3863 FDEV(i).start_blk, FDEV(i).end_blk); 3864 } 3865 f2fs_info(sbi, 3866 "IO Block Size: %8d KB", F2FS_IO_SIZE_KB(sbi)); 3867 return 0; 3868 } 3869 3870 static int f2fs_setup_casefold(struct f2fs_sb_info *sbi) 3871 { 3872 #ifdef CONFIG_UNICODE 3873 if (f2fs_sb_has_casefold(sbi) && !sbi->sb->s_encoding) { 3874 const struct f2fs_sb_encodings *encoding_info; 3875 struct unicode_map *encoding; 3876 __u16 encoding_flags; 3877 3878 if (f2fs_sb_read_encoding(sbi->raw_super, &encoding_info, 3879 &encoding_flags)) { 3880 f2fs_err(sbi, 3881 "Encoding requested by superblock is unknown"); 3882 return -EINVAL; 3883 } 3884 3885 encoding = utf8_load(encoding_info->version); 3886 if (IS_ERR(encoding)) { 3887 f2fs_err(sbi, 3888 "can't mount with superblock charset: %s-%s " 3889 "not supported by the kernel. flags: 0x%x.", 3890 encoding_info->name, encoding_info->version, 3891 encoding_flags); 3892 return PTR_ERR(encoding); 3893 } 3894 f2fs_info(sbi, "Using encoding defined by superblock: " 3895 "%s-%s with flags 0x%hx", encoding_info->name, 3896 encoding_info->version?:"\b", encoding_flags); 3897 3898 sbi->sb->s_encoding = encoding; 3899 sbi->sb->s_encoding_flags = encoding_flags; 3900 } 3901 #else 3902 if (f2fs_sb_has_casefold(sbi)) { 3903 f2fs_err(sbi, "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE"); 3904 return -EINVAL; 3905 } 3906 #endif 3907 return 0; 3908 } 3909 3910 static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi) 3911 { 3912 struct f2fs_sm_info *sm_i = SM_I(sbi); 3913 3914 /* adjust parameters according to the volume size */ 3915 if (sm_i->main_segments <= SMALL_VOLUME_SEGMENTS) { 3916 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE; 3917 if (f2fs_block_unit_discard(sbi)) 3918 sm_i->dcc_info->discard_granularity = 1; 3919 sm_i->ipu_policy = 1 << F2FS_IPU_FORCE; 3920 } 3921 3922 sbi->readdir_ra = 1; 3923 } 3924 3925 static int f2fs_fill_super(struct super_block *sb, void *data, int silent) 3926 { 3927 struct f2fs_sb_info *sbi; 3928 struct f2fs_super_block *raw_super; 3929 struct inode *root; 3930 int err; 3931 bool skip_recovery = false, need_fsck = false; 3932 char *options = NULL; 3933 int recovery, i, valid_super_block; 3934 struct curseg_info *seg_i; 3935 int retry_cnt = 1; 3936 3937 try_onemore: 3938 err = -EINVAL; 3939 raw_super = NULL; 3940 valid_super_block = -1; 3941 recovery = 0; 3942 3943 /* allocate memory for f2fs-specific super block info */ 3944 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL); 3945 if (!sbi) 3946 return -ENOMEM; 3947 3948 sbi->sb = sb; 3949 3950 /* Load the checksum driver */ 3951 sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0); 3952 if (IS_ERR(sbi->s_chksum_driver)) { 3953 f2fs_err(sbi, "Cannot load crc32 driver."); 3954 err = PTR_ERR(sbi->s_chksum_driver); 3955 sbi->s_chksum_driver = NULL; 3956 goto free_sbi; 3957 } 3958 3959 /* set a block size */ 3960 if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) { 3961 f2fs_err(sbi, "unable to set blocksize"); 3962 goto free_sbi; 3963 } 3964 3965 err = read_raw_super_block(sbi, &raw_super, &valid_super_block, 3966 &recovery); 3967 if (err) 3968 goto free_sbi; 3969 3970 sb->s_fs_info = sbi; 3971 sbi->raw_super = raw_super; 3972 3973 /* precompute checksum seed for metadata */ 3974 if (f2fs_sb_has_inode_chksum(sbi)) 3975 sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid, 3976 sizeof(raw_super->uuid)); 3977 3978 default_options(sbi); 3979 /* parse mount options */ 3980 options = kstrdup((const char *)data, GFP_KERNEL); 3981 if (data && !options) { 3982 err = -ENOMEM; 3983 goto free_sb_buf; 3984 } 3985 3986 err = parse_options(sb, options, false); 3987 if (err) 3988 goto free_options; 3989 3990 sb->s_maxbytes = max_file_blocks(NULL) << 3991 le32_to_cpu(raw_super->log_blocksize); 3992 sb->s_max_links = F2FS_LINK_MAX; 3993 3994 err = f2fs_setup_casefold(sbi); 3995 if (err) 3996 goto free_options; 3997 3998 #ifdef CONFIG_QUOTA 3999 sb->dq_op = &f2fs_quota_operations; 4000 sb->s_qcop = &f2fs_quotactl_ops; 4001 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ; 4002 4003 if (f2fs_sb_has_quota_ino(sbi)) { 4004 for (i = 0; i < MAXQUOTAS; i++) { 4005 if (f2fs_qf_ino(sbi->sb, i)) 4006 sbi->nquota_files++; 4007 } 4008 } 4009 #endif 4010 4011 sb->s_op = &f2fs_sops; 4012 #ifdef CONFIG_FS_ENCRYPTION 4013 sb->s_cop = &f2fs_cryptops; 4014 #endif 4015 #ifdef CONFIG_FS_VERITY 4016 sb->s_vop = &f2fs_verityops; 4017 #endif 4018 sb->s_xattr = f2fs_xattr_handlers; 4019 sb->s_export_op = &f2fs_export_ops; 4020 sb->s_magic = F2FS_SUPER_MAGIC; 4021 sb->s_time_gran = 1; 4022 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) | 4023 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0); 4024 memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid)); 4025 sb->s_iflags |= SB_I_CGROUPWB; 4026 4027 /* init f2fs-specific super block info */ 4028 sbi->valid_super_block = valid_super_block; 4029 init_rwsem(&sbi->gc_lock); 4030 mutex_init(&sbi->writepages); 4031 init_rwsem(&sbi->cp_global_sem); 4032 init_rwsem(&sbi->node_write); 4033 init_rwsem(&sbi->node_change); 4034 4035 /* disallow all the data/node/meta page writes */ 4036 set_sbi_flag(sbi, SBI_POR_DOING); 4037 spin_lock_init(&sbi->stat_lock); 4038 4039 for (i = 0; i < NR_PAGE_TYPE; i++) { 4040 int n = (i == META) ? 1 : NR_TEMP_TYPE; 4041 int j; 4042 4043 sbi->write_io[i] = 4044 f2fs_kmalloc(sbi, 4045 array_size(n, 4046 sizeof(struct f2fs_bio_info)), 4047 GFP_KERNEL); 4048 if (!sbi->write_io[i]) { 4049 err = -ENOMEM; 4050 goto free_bio_info; 4051 } 4052 4053 for (j = HOT; j < n; j++) { 4054 init_rwsem(&sbi->write_io[i][j].io_rwsem); 4055 sbi->write_io[i][j].sbi = sbi; 4056 sbi->write_io[i][j].bio = NULL; 4057 spin_lock_init(&sbi->write_io[i][j].io_lock); 4058 INIT_LIST_HEAD(&sbi->write_io[i][j].io_list); 4059 INIT_LIST_HEAD(&sbi->write_io[i][j].bio_list); 4060 init_rwsem(&sbi->write_io[i][j].bio_list_lock); 4061 } 4062 } 4063 4064 init_rwsem(&sbi->cp_rwsem); 4065 init_rwsem(&sbi->quota_sem); 4066 init_waitqueue_head(&sbi->cp_wait); 4067 init_sb_info(sbi); 4068 4069 err = f2fs_init_iostat(sbi); 4070 if (err) 4071 goto free_bio_info; 4072 4073 err = init_percpu_info(sbi); 4074 if (err) 4075 goto free_iostat; 4076 4077 if (F2FS_IO_ALIGNED(sbi)) { 4078 sbi->write_io_dummy = 4079 mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0); 4080 if (!sbi->write_io_dummy) { 4081 err = -ENOMEM; 4082 goto free_percpu; 4083 } 4084 } 4085 4086 /* init per sbi slab cache */ 4087 err = f2fs_init_xattr_caches(sbi); 4088 if (err) 4089 goto free_io_dummy; 4090 err = f2fs_init_page_array_cache(sbi); 4091 if (err) 4092 goto free_xattr_cache; 4093 4094 /* get an inode for meta space */ 4095 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi)); 4096 if (IS_ERR(sbi->meta_inode)) { 4097 f2fs_err(sbi, "Failed to read F2FS meta data inode"); 4098 err = PTR_ERR(sbi->meta_inode); 4099 goto free_page_array_cache; 4100 } 4101 4102 err = f2fs_get_valid_checkpoint(sbi); 4103 if (err) { 4104 f2fs_err(sbi, "Failed to get valid F2FS checkpoint"); 4105 goto free_meta_inode; 4106 } 4107 4108 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_QUOTA_NEED_FSCK_FLAG)) 4109 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 4110 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_DISABLED_QUICK_FLAG)) { 4111 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK); 4112 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL; 4113 } 4114 4115 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FSCK_FLAG)) 4116 set_sbi_flag(sbi, SBI_NEED_FSCK); 4117 4118 /* Initialize device list */ 4119 err = f2fs_scan_devices(sbi); 4120 if (err) { 4121 f2fs_err(sbi, "Failed to find devices"); 4122 goto free_devices; 4123 } 4124 4125 err = f2fs_init_post_read_wq(sbi); 4126 if (err) { 4127 f2fs_err(sbi, "Failed to initialize post read workqueue"); 4128 goto free_devices; 4129 } 4130 4131 sbi->total_valid_node_count = 4132 le32_to_cpu(sbi->ckpt->valid_node_count); 4133 percpu_counter_set(&sbi->total_valid_inode_count, 4134 le32_to_cpu(sbi->ckpt->valid_inode_count)); 4135 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count); 4136 sbi->total_valid_block_count = 4137 le64_to_cpu(sbi->ckpt->valid_block_count); 4138 sbi->last_valid_block_count = sbi->total_valid_block_count; 4139 sbi->reserved_blocks = 0; 4140 sbi->current_reserved_blocks = 0; 4141 limit_reserve_root(sbi); 4142 adjust_unusable_cap_perc(sbi); 4143 4144 for (i = 0; i < NR_INODE_TYPE; i++) { 4145 INIT_LIST_HEAD(&sbi->inode_list[i]); 4146 spin_lock_init(&sbi->inode_lock[i]); 4147 } 4148 mutex_init(&sbi->flush_lock); 4149 4150 f2fs_init_extent_cache_info(sbi); 4151 4152 f2fs_init_ino_entry_info(sbi); 4153 4154 f2fs_init_fsync_node_info(sbi); 4155 4156 /* setup checkpoint request control and start checkpoint issue thread */ 4157 f2fs_init_ckpt_req_control(sbi); 4158 if (!f2fs_readonly(sb) && !test_opt(sbi, DISABLE_CHECKPOINT) && 4159 test_opt(sbi, MERGE_CHECKPOINT)) { 4160 err = f2fs_start_ckpt_thread(sbi); 4161 if (err) { 4162 f2fs_err(sbi, 4163 "Failed to start F2FS issue_checkpoint_thread (%d)", 4164 err); 4165 goto stop_ckpt_thread; 4166 } 4167 } 4168 4169 /* setup f2fs internal modules */ 4170 err = f2fs_build_segment_manager(sbi); 4171 if (err) { 4172 f2fs_err(sbi, "Failed to initialize F2FS segment manager (%d)", 4173 err); 4174 goto free_sm; 4175 } 4176 err = f2fs_build_node_manager(sbi); 4177 if (err) { 4178 f2fs_err(sbi, "Failed to initialize F2FS node manager (%d)", 4179 err); 4180 goto free_nm; 4181 } 4182 4183 /* For write statistics */ 4184 sbi->sectors_written_start = f2fs_get_sectors_written(sbi); 4185 4186 /* Read accumulated write IO statistics if exists */ 4187 seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE); 4188 if (__exist_node_summaries(sbi)) 4189 sbi->kbytes_written = 4190 le64_to_cpu(seg_i->journal->info.kbytes_written); 4191 4192 f2fs_build_gc_manager(sbi); 4193 4194 err = f2fs_build_stats(sbi); 4195 if (err) 4196 goto free_nm; 4197 4198 /* get an inode for node space */ 4199 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi)); 4200 if (IS_ERR(sbi->node_inode)) { 4201 f2fs_err(sbi, "Failed to read node inode"); 4202 err = PTR_ERR(sbi->node_inode); 4203 goto free_stats; 4204 } 4205 4206 /* read root inode and dentry */ 4207 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi)); 4208 if (IS_ERR(root)) { 4209 f2fs_err(sbi, "Failed to read root inode"); 4210 err = PTR_ERR(root); 4211 goto free_node_inode; 4212 } 4213 if (!S_ISDIR(root->i_mode) || !root->i_blocks || 4214 !root->i_size || !root->i_nlink) { 4215 iput(root); 4216 err = -EINVAL; 4217 goto free_node_inode; 4218 } 4219 4220 sb->s_root = d_make_root(root); /* allocate root dentry */ 4221 if (!sb->s_root) { 4222 err = -ENOMEM; 4223 goto free_node_inode; 4224 } 4225 4226 err = f2fs_init_compress_inode(sbi); 4227 if (err) 4228 goto free_root_inode; 4229 4230 err = f2fs_register_sysfs(sbi); 4231 if (err) 4232 goto free_compress_inode; 4233 4234 #ifdef CONFIG_QUOTA 4235 /* Enable quota usage during mount */ 4236 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) { 4237 err = f2fs_enable_quotas(sb); 4238 if (err) 4239 f2fs_err(sbi, "Cannot turn on quotas: error %d", err); 4240 } 4241 #endif 4242 /* if there are any orphan inodes, free them */ 4243 err = f2fs_recover_orphan_inodes(sbi); 4244 if (err) 4245 goto free_meta; 4246 4247 if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG))) 4248 goto reset_checkpoint; 4249 4250 /* recover fsynced data */ 4251 if (!test_opt(sbi, DISABLE_ROLL_FORWARD) && 4252 !test_opt(sbi, NORECOVERY)) { 4253 /* 4254 * mount should be failed, when device has readonly mode, and 4255 * previous checkpoint was not done by clean system shutdown. 4256 */ 4257 if (f2fs_hw_is_readonly(sbi)) { 4258 if (!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) { 4259 err = f2fs_recover_fsync_data(sbi, true); 4260 if (err > 0) { 4261 err = -EROFS; 4262 f2fs_err(sbi, "Need to recover fsync data, but " 4263 "write access unavailable, please try " 4264 "mount w/ disable_roll_forward or norecovery"); 4265 } 4266 if (err < 0) 4267 goto free_meta; 4268 } 4269 f2fs_info(sbi, "write access unavailable, skipping recovery"); 4270 goto reset_checkpoint; 4271 } 4272 4273 if (need_fsck) 4274 set_sbi_flag(sbi, SBI_NEED_FSCK); 4275 4276 if (skip_recovery) 4277 goto reset_checkpoint; 4278 4279 err = f2fs_recover_fsync_data(sbi, false); 4280 if (err < 0) { 4281 if (err != -ENOMEM) 4282 skip_recovery = true; 4283 need_fsck = true; 4284 f2fs_err(sbi, "Cannot recover all fsync data errno=%d", 4285 err); 4286 goto free_meta; 4287 } 4288 } else { 4289 err = f2fs_recover_fsync_data(sbi, true); 4290 4291 if (!f2fs_readonly(sb) && err > 0) { 4292 err = -EINVAL; 4293 f2fs_err(sbi, "Need to recover fsync data"); 4294 goto free_meta; 4295 } 4296 } 4297 4298 /* 4299 * If the f2fs is not readonly and fsync data recovery succeeds, 4300 * check zoned block devices' write pointer consistency. 4301 */ 4302 if (!err && !f2fs_readonly(sb) && f2fs_sb_has_blkzoned(sbi)) { 4303 err = f2fs_check_write_pointer(sbi); 4304 if (err) 4305 goto free_meta; 4306 } 4307 4308 reset_checkpoint: 4309 f2fs_init_inmem_curseg(sbi); 4310 4311 /* f2fs_recover_fsync_data() cleared this already */ 4312 clear_sbi_flag(sbi, SBI_POR_DOING); 4313 4314 if (test_opt(sbi, DISABLE_CHECKPOINT)) { 4315 err = f2fs_disable_checkpoint(sbi); 4316 if (err) 4317 goto sync_free_meta; 4318 } else if (is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)) { 4319 f2fs_enable_checkpoint(sbi); 4320 } 4321 4322 /* 4323 * If filesystem is not mounted as read-only then 4324 * do start the gc_thread. 4325 */ 4326 if ((F2FS_OPTION(sbi).bggc_mode != BGGC_MODE_OFF || 4327 test_opt(sbi, GC_MERGE)) && !f2fs_readonly(sb)) { 4328 /* After POR, we can run background GC thread.*/ 4329 err = f2fs_start_gc_thread(sbi); 4330 if (err) 4331 goto sync_free_meta; 4332 } 4333 kvfree(options); 4334 4335 /* recover broken superblock */ 4336 if (recovery) { 4337 err = f2fs_commit_super(sbi, true); 4338 f2fs_info(sbi, "Try to recover %dth superblock, ret: %d", 4339 sbi->valid_super_block ? 1 : 2, err); 4340 } 4341 4342 f2fs_join_shrinker(sbi); 4343 4344 f2fs_tuning_parameters(sbi); 4345 4346 f2fs_notice(sbi, "Mounted with checkpoint version = %llx", 4347 cur_cp_version(F2FS_CKPT(sbi))); 4348 f2fs_update_time(sbi, CP_TIME); 4349 f2fs_update_time(sbi, REQ_TIME); 4350 clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK); 4351 return 0; 4352 4353 sync_free_meta: 4354 /* safe to flush all the data */ 4355 sync_filesystem(sbi->sb); 4356 retry_cnt = 0; 4357 4358 free_meta: 4359 #ifdef CONFIG_QUOTA 4360 f2fs_truncate_quota_inode_pages(sb); 4361 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) 4362 f2fs_quota_off_umount(sbi->sb); 4363 #endif 4364 /* 4365 * Some dirty meta pages can be produced by f2fs_recover_orphan_inodes() 4366 * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg() 4367 * followed by f2fs_write_checkpoint() through f2fs_write_node_pages(), which 4368 * falls into an infinite loop in f2fs_sync_meta_pages(). 4369 */ 4370 truncate_inode_pages_final(META_MAPPING(sbi)); 4371 /* evict some inodes being cached by GC */ 4372 evict_inodes(sb); 4373 f2fs_unregister_sysfs(sbi); 4374 free_compress_inode: 4375 f2fs_destroy_compress_inode(sbi); 4376 free_root_inode: 4377 dput(sb->s_root); 4378 sb->s_root = NULL; 4379 free_node_inode: 4380 f2fs_release_ino_entry(sbi, true); 4381 truncate_inode_pages_final(NODE_MAPPING(sbi)); 4382 iput(sbi->node_inode); 4383 sbi->node_inode = NULL; 4384 free_stats: 4385 f2fs_destroy_stats(sbi); 4386 free_nm: 4387 /* stop discard thread before destroying node manager */ 4388 f2fs_stop_discard_thread(sbi); 4389 f2fs_destroy_node_manager(sbi); 4390 free_sm: 4391 f2fs_destroy_segment_manager(sbi); 4392 f2fs_destroy_post_read_wq(sbi); 4393 stop_ckpt_thread: 4394 f2fs_stop_ckpt_thread(sbi); 4395 free_devices: 4396 destroy_device_list(sbi); 4397 kvfree(sbi->ckpt); 4398 free_meta_inode: 4399 make_bad_inode(sbi->meta_inode); 4400 iput(sbi->meta_inode); 4401 sbi->meta_inode = NULL; 4402 free_page_array_cache: 4403 f2fs_destroy_page_array_cache(sbi); 4404 free_xattr_cache: 4405 f2fs_destroy_xattr_caches(sbi); 4406 free_io_dummy: 4407 mempool_destroy(sbi->write_io_dummy); 4408 free_percpu: 4409 destroy_percpu_info(sbi); 4410 free_iostat: 4411 f2fs_destroy_iostat(sbi); 4412 free_bio_info: 4413 for (i = 0; i < NR_PAGE_TYPE; i++) 4414 kvfree(sbi->write_io[i]); 4415 4416 #ifdef CONFIG_UNICODE 4417 utf8_unload(sb->s_encoding); 4418 sb->s_encoding = NULL; 4419 #endif 4420 free_options: 4421 #ifdef CONFIG_QUOTA 4422 for (i = 0; i < MAXQUOTAS; i++) 4423 kfree(F2FS_OPTION(sbi).s_qf_names[i]); 4424 #endif 4425 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy); 4426 kvfree(options); 4427 free_sb_buf: 4428 kfree(raw_super); 4429 free_sbi: 4430 if (sbi->s_chksum_driver) 4431 crypto_free_shash(sbi->s_chksum_driver); 4432 kfree(sbi); 4433 4434 /* give only one another chance */ 4435 if (retry_cnt > 0 && skip_recovery) { 4436 retry_cnt--; 4437 shrink_dcache_sb(sb); 4438 goto try_onemore; 4439 } 4440 return err; 4441 } 4442 4443 static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags, 4444 const char *dev_name, void *data) 4445 { 4446 return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super); 4447 } 4448 4449 static void kill_f2fs_super(struct super_block *sb) 4450 { 4451 if (sb->s_root) { 4452 struct f2fs_sb_info *sbi = F2FS_SB(sb); 4453 4454 set_sbi_flag(sbi, SBI_IS_CLOSE); 4455 f2fs_stop_gc_thread(sbi); 4456 f2fs_stop_discard_thread(sbi); 4457 4458 #ifdef CONFIG_F2FS_FS_COMPRESSION 4459 /* 4460 * latter evict_inode() can bypass checking and invalidating 4461 * compress inode cache. 4462 */ 4463 if (test_opt(sbi, COMPRESS_CACHE)) 4464 truncate_inode_pages_final(COMPRESS_MAPPING(sbi)); 4465 #endif 4466 4467 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) || 4468 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) { 4469 struct cp_control cpc = { 4470 .reason = CP_UMOUNT, 4471 }; 4472 f2fs_write_checkpoint(sbi, &cpc); 4473 } 4474 4475 if (is_sbi_flag_set(sbi, SBI_IS_RECOVERED) && f2fs_readonly(sb)) 4476 sb->s_flags &= ~SB_RDONLY; 4477 } 4478 kill_block_super(sb); 4479 } 4480 4481 static struct file_system_type f2fs_fs_type = { 4482 .owner = THIS_MODULE, 4483 .name = "f2fs", 4484 .mount = f2fs_mount, 4485 .kill_sb = kill_f2fs_super, 4486 .fs_flags = FS_REQUIRES_DEV, 4487 }; 4488 MODULE_ALIAS_FS("f2fs"); 4489 4490 static int __init init_inodecache(void) 4491 { 4492 f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache", 4493 sizeof(struct f2fs_inode_info), 0, 4494 SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL); 4495 if (!f2fs_inode_cachep) 4496 return -ENOMEM; 4497 return 0; 4498 } 4499 4500 static void destroy_inodecache(void) 4501 { 4502 /* 4503 * Make sure all delayed rcu free inodes are flushed before we 4504 * destroy cache. 4505 */ 4506 rcu_barrier(); 4507 kmem_cache_destroy(f2fs_inode_cachep); 4508 } 4509 4510 static int __init init_f2fs_fs(void) 4511 { 4512 int err; 4513 4514 if (PAGE_SIZE != F2FS_BLKSIZE) { 4515 printk("F2FS not supported on PAGE_SIZE(%lu) != %d\n", 4516 PAGE_SIZE, F2FS_BLKSIZE); 4517 return -EINVAL; 4518 } 4519 4520 err = init_inodecache(); 4521 if (err) 4522 goto fail; 4523 err = f2fs_create_node_manager_caches(); 4524 if (err) 4525 goto free_inodecache; 4526 err = f2fs_create_segment_manager_caches(); 4527 if (err) 4528 goto free_node_manager_caches; 4529 err = f2fs_create_checkpoint_caches(); 4530 if (err) 4531 goto free_segment_manager_caches; 4532 err = f2fs_create_recovery_cache(); 4533 if (err) 4534 goto free_checkpoint_caches; 4535 err = f2fs_create_extent_cache(); 4536 if (err) 4537 goto free_recovery_cache; 4538 err = f2fs_create_garbage_collection_cache(); 4539 if (err) 4540 goto free_extent_cache; 4541 err = f2fs_init_sysfs(); 4542 if (err) 4543 goto free_garbage_collection_cache; 4544 err = register_shrinker(&f2fs_shrinker_info); 4545 if (err) 4546 goto free_sysfs; 4547 err = register_filesystem(&f2fs_fs_type); 4548 if (err) 4549 goto free_shrinker; 4550 f2fs_create_root_stats(); 4551 err = f2fs_init_post_read_processing(); 4552 if (err) 4553 goto free_root_stats; 4554 err = f2fs_init_iostat_processing(); 4555 if (err) 4556 goto free_post_read; 4557 err = f2fs_init_bio_entry_cache(); 4558 if (err) 4559 goto free_iostat; 4560 err = f2fs_init_bioset(); 4561 if (err) 4562 goto free_bio_enrty_cache; 4563 err = f2fs_init_compress_mempool(); 4564 if (err) 4565 goto free_bioset; 4566 err = f2fs_init_compress_cache(); 4567 if (err) 4568 goto free_compress_mempool; 4569 err = f2fs_create_casefold_cache(); 4570 if (err) 4571 goto free_compress_cache; 4572 return 0; 4573 free_compress_cache: 4574 f2fs_destroy_compress_cache(); 4575 free_compress_mempool: 4576 f2fs_destroy_compress_mempool(); 4577 free_bioset: 4578 f2fs_destroy_bioset(); 4579 free_bio_enrty_cache: 4580 f2fs_destroy_bio_entry_cache(); 4581 free_iostat: 4582 f2fs_destroy_iostat_processing(); 4583 free_post_read: 4584 f2fs_destroy_post_read_processing(); 4585 free_root_stats: 4586 f2fs_destroy_root_stats(); 4587 unregister_filesystem(&f2fs_fs_type); 4588 free_shrinker: 4589 unregister_shrinker(&f2fs_shrinker_info); 4590 free_sysfs: 4591 f2fs_exit_sysfs(); 4592 free_garbage_collection_cache: 4593 f2fs_destroy_garbage_collection_cache(); 4594 free_extent_cache: 4595 f2fs_destroy_extent_cache(); 4596 free_recovery_cache: 4597 f2fs_destroy_recovery_cache(); 4598 free_checkpoint_caches: 4599 f2fs_destroy_checkpoint_caches(); 4600 free_segment_manager_caches: 4601 f2fs_destroy_segment_manager_caches(); 4602 free_node_manager_caches: 4603 f2fs_destroy_node_manager_caches(); 4604 free_inodecache: 4605 destroy_inodecache(); 4606 fail: 4607 return err; 4608 } 4609 4610 static void __exit exit_f2fs_fs(void) 4611 { 4612 f2fs_destroy_casefold_cache(); 4613 f2fs_destroy_compress_cache(); 4614 f2fs_destroy_compress_mempool(); 4615 f2fs_destroy_bioset(); 4616 f2fs_destroy_bio_entry_cache(); 4617 f2fs_destroy_iostat_processing(); 4618 f2fs_destroy_post_read_processing(); 4619 f2fs_destroy_root_stats(); 4620 unregister_filesystem(&f2fs_fs_type); 4621 unregister_shrinker(&f2fs_shrinker_info); 4622 f2fs_exit_sysfs(); 4623 f2fs_destroy_garbage_collection_cache(); 4624 f2fs_destroy_extent_cache(); 4625 f2fs_destroy_recovery_cache(); 4626 f2fs_destroy_checkpoint_caches(); 4627 f2fs_destroy_segment_manager_caches(); 4628 f2fs_destroy_node_manager_caches(); 4629 destroy_inodecache(); 4630 } 4631 4632 module_init(init_f2fs_fs) 4633 module_exit(exit_f2fs_fs) 4634 4635 MODULE_AUTHOR("Samsung Electronics's Praesto Team"); 4636 MODULE_DESCRIPTION("Flash Friendly File System"); 4637 MODULE_LICENSE("GPL"); 4638 MODULE_SOFTDEP("pre: crc32"); 4639 4640