| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * fs/f2fs/super.c |
| * |
| * Copyright (c) 2012 Samsung Electronics Co., Ltd. |
| * http://www.samsung.com/ |
| */ |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/fs.h> |
| #include <linux/fs_context.h> |
| #include <linux/sched/mm.h> |
| #include <linux/statfs.h> |
| #include <linux/buffer_head.h> |
| #include <linux/kthread.h> |
| #include <linux/parser.h> |
| #include <linux/mount.h> |
| #include <linux/seq_file.h> |
| #include <linux/proc_fs.h> |
| #include <linux/random.h> |
| #include <linux/exportfs.h> |
| #include <linux/blkdev.h> |
| #include <linux/quotaops.h> |
| #include <linux/f2fs_fs.h> |
| #include <linux/sysfs.h> |
| #include <linux/quota.h> |
| #include <linux/unicode.h> |
| #include <linux/part_stat.h> |
| #include <linux/zstd.h> |
| #include <linux/lz4.h> |
| |
| #include "f2fs.h" |
| #include "node.h" |
| #include "segment.h" |
| #include "xattr.h" |
| #include "gc.h" |
| #include "iostat.h" |
| |
| #define CREATE_TRACE_POINTS |
| #include <trace/events/f2fs.h> |
| |
| static struct kmem_cache *f2fs_inode_cachep; |
| |
| #ifdef CONFIG_F2FS_FAULT_INJECTION |
| |
| const char *f2fs_fault_name[FAULT_MAX] = { |
| [FAULT_KMALLOC] = "kmalloc", |
| [FAULT_KVMALLOC] = "kvmalloc", |
| [FAULT_PAGE_ALLOC] = "page alloc", |
| [FAULT_PAGE_GET] = "page get", |
| [FAULT_ALLOC_NID] = "alloc nid", |
| [FAULT_ORPHAN] = "orphan", |
| [FAULT_BLOCK] = "no more block", |
| [FAULT_DIR_DEPTH] = "too big dir depth", |
| [FAULT_EVICT_INODE] = "evict_inode fail", |
| [FAULT_TRUNCATE] = "truncate fail", |
| [FAULT_READ_IO] = "read IO error", |
| [FAULT_CHECKPOINT] = "checkpoint error", |
| [FAULT_DISCARD] = "discard error", |
| [FAULT_WRITE_IO] = "write IO error", |
| [FAULT_SLAB_ALLOC] = "slab alloc", |
| [FAULT_DQUOT_INIT] = "dquot initialize", |
| [FAULT_LOCK_OP] = "lock_op", |
| [FAULT_BLKADDR_VALIDITY] = "invalid blkaddr", |
| [FAULT_BLKADDR_CONSISTENCE] = "inconsistent blkaddr", |
| [FAULT_NO_SEGMENT] = "no free segment", |
| }; |
| |
| int f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned long rate, |
| unsigned long type) |
| { |
| struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info; |
| |
| if (rate) { |
| if (rate > INT_MAX) |
| return -EINVAL; |
| atomic_set(&ffi->inject_ops, 0); |
| ffi->inject_rate = (int)rate; |
| } |
| |
| if (type) { |
| if (type >= BIT(FAULT_MAX)) |
| return -EINVAL; |
| ffi->inject_type = (unsigned int)type; |
| } |
| |
| if (!rate && !type) |
| memset(ffi, 0, sizeof(struct f2fs_fault_info)); |
| else |
| f2fs_info(sbi, |
| "build fault injection attr: rate: %lu, type: 0x%lx", |
| rate, type); |
| return 0; |
| } |
| #endif |
| |
| /* f2fs-wide shrinker description */ |
| static struct shrinker *f2fs_shrinker_info; |
| |
| static int __init f2fs_init_shrinker(void) |
| { |
| f2fs_shrinker_info = shrinker_alloc(0, "f2fs-shrinker"); |
| if (!f2fs_shrinker_info) |
| return -ENOMEM; |
| |
| f2fs_shrinker_info->count_objects = f2fs_shrink_count; |
| f2fs_shrinker_info->scan_objects = f2fs_shrink_scan; |
| |
| shrinker_register(f2fs_shrinker_info); |
| |
| return 0; |
| } |
| |
| static void f2fs_exit_shrinker(void) |
| { |
| shrinker_free(f2fs_shrinker_info); |
| } |
| |
| enum { |
| Opt_gc_background, |
| Opt_disable_roll_forward, |
| Opt_norecovery, |
| Opt_discard, |
| Opt_nodiscard, |
| Opt_noheap, |
| Opt_heap, |
| Opt_user_xattr, |
| Opt_nouser_xattr, |
| Opt_acl, |
| Opt_noacl, |
| Opt_active_logs, |
| Opt_disable_ext_identify, |
| Opt_inline_xattr, |
| Opt_noinline_xattr, |
| Opt_inline_xattr_size, |
| Opt_inline_data, |
| Opt_inline_dentry, |
| Opt_noinline_dentry, |
| Opt_flush_merge, |
| Opt_noflush_merge, |
| Opt_barrier, |
| Opt_nobarrier, |
| Opt_fastboot, |
| Opt_extent_cache, |
| Opt_noextent_cache, |
| Opt_noinline_data, |
| Opt_data_flush, |
| Opt_reserve_root, |
| Opt_resgid, |
| Opt_resuid, |
| Opt_mode, |
| Opt_fault_injection, |
| Opt_fault_type, |
| Opt_quota, |
| Opt_noquota, |
| Opt_usrquota, |
| Opt_grpquota, |
| Opt_prjquota, |
| Opt_usrjquota, |
| Opt_grpjquota, |
| Opt_prjjquota, |
| Opt_offusrjquota, |
| Opt_offgrpjquota, |
| Opt_offprjjquota, |
| Opt_jqfmt_vfsold, |
| Opt_jqfmt_vfsv0, |
| Opt_jqfmt_vfsv1, |
| Opt_alloc, |
| Opt_fsync, |
| Opt_test_dummy_encryption, |
| Opt_inlinecrypt, |
| Opt_checkpoint_disable, |
| Opt_checkpoint_disable_cap, |
| Opt_checkpoint_disable_cap_perc, |
| Opt_checkpoint_enable, |
| Opt_checkpoint_merge, |
| Opt_nocheckpoint_merge, |
| Opt_compress_algorithm, |
| Opt_compress_log_size, |
| Opt_compress_extension, |
| Opt_nocompress_extension, |
| Opt_compress_chksum, |
| Opt_compress_mode, |
| Opt_compress_cache, |
| Opt_atgc, |
| Opt_gc_merge, |
| Opt_nogc_merge, |
| Opt_discard_unit, |
| Opt_memory_mode, |
| Opt_age_extent_cache, |
| Opt_errors, |
| Opt_err, |
| }; |
| |
| static match_table_t f2fs_tokens = { |
| {Opt_gc_background, "background_gc=%s"}, |
| {Opt_disable_roll_forward, "disable_roll_forward"}, |
| {Opt_norecovery, "norecovery"}, |
| {Opt_discard, "discard"}, |
| {Opt_nodiscard, "nodiscard"}, |
| {Opt_noheap, "no_heap"}, |
| {Opt_heap, "heap"}, |
| {Opt_user_xattr, "user_xattr"}, |
| {Opt_nouser_xattr, "nouser_xattr"}, |
| {Opt_acl, "acl"}, |
| {Opt_noacl, "noacl"}, |
| {Opt_active_logs, "active_logs=%u"}, |
| {Opt_disable_ext_identify, "disable_ext_identify"}, |
| {Opt_inline_xattr, "inline_xattr"}, |
| {Opt_noinline_xattr, "noinline_xattr"}, |
| {Opt_inline_xattr_size, "inline_xattr_size=%u"}, |
| {Opt_inline_data, "inline_data"}, |
| {Opt_inline_dentry, "inline_dentry"}, |
| {Opt_noinline_dentry, "noinline_dentry"}, |
| {Opt_flush_merge, "flush_merge"}, |
| {Opt_noflush_merge, "noflush_merge"}, |
| {Opt_barrier, "barrier"}, |
| {Opt_nobarrier, "nobarrier"}, |
| {Opt_fastboot, "fastboot"}, |
| {Opt_extent_cache, "extent_cache"}, |
| {Opt_noextent_cache, "noextent_cache"}, |
| {Opt_noinline_data, "noinline_data"}, |
| {Opt_data_flush, "data_flush"}, |
| {Opt_reserve_root, "reserve_root=%u"}, |
| {Opt_resgid, "resgid=%u"}, |
| {Opt_resuid, "resuid=%u"}, |
| {Opt_mode, "mode=%s"}, |
| {Opt_fault_injection, "fault_injection=%u"}, |
| {Opt_fault_type, "fault_type=%u"}, |
| {Opt_quota, "quota"}, |
| {Opt_noquota, "noquota"}, |
| {Opt_usrquota, "usrquota"}, |
| {Opt_grpquota, "grpquota"}, |
| {Opt_prjquota, "prjquota"}, |
| {Opt_usrjquota, "usrjquota=%s"}, |
| {Opt_grpjquota, "grpjquota=%s"}, |
| {Opt_prjjquota, "prjjquota=%s"}, |
| {Opt_offusrjquota, "usrjquota="}, |
| {Opt_offgrpjquota, "grpjquota="}, |
| {Opt_offprjjquota, "prjjquota="}, |
| {Opt_jqfmt_vfsold, "jqfmt=vfsold"}, |
| {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"}, |
| {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"}, |
| {Opt_alloc, "alloc_mode=%s"}, |
| {Opt_fsync, "fsync_mode=%s"}, |
| {Opt_test_dummy_encryption, "test_dummy_encryption=%s"}, |
| {Opt_test_dummy_encryption, "test_dummy_encryption"}, |
| {Opt_inlinecrypt, "inlinecrypt"}, |
| {Opt_checkpoint_disable, "checkpoint=disable"}, |
| {Opt_checkpoint_disable_cap, "checkpoint=disable:%u"}, |
| {Opt_checkpoint_disable_cap_perc, "checkpoint=disable:%u%%"}, |
| {Opt_checkpoint_enable, "checkpoint=enable"}, |
| {Opt_checkpoint_merge, "checkpoint_merge"}, |
| {Opt_nocheckpoint_merge, "nocheckpoint_merge"}, |
| {Opt_compress_algorithm, "compress_algorithm=%s"}, |
| {Opt_compress_log_size, "compress_log_size=%u"}, |
| {Opt_compress_extension, "compress_extension=%s"}, |
| {Opt_nocompress_extension, "nocompress_extension=%s"}, |
| {Opt_compress_chksum, "compress_chksum"}, |
| {Opt_compress_mode, "compress_mode=%s"}, |
| {Opt_compress_cache, "compress_cache"}, |
| {Opt_atgc, "atgc"}, |
| {Opt_gc_merge, "gc_merge"}, |
| {Opt_nogc_merge, "nogc_merge"}, |
| {Opt_discard_unit, "discard_unit=%s"}, |
| {Opt_memory_mode, "memory=%s"}, |
| {Opt_age_extent_cache, "age_extent_cache"}, |
| {Opt_errors, "errors=%s"}, |
| {Opt_err, NULL}, |
| }; |
| |
| void f2fs_printk(struct f2fs_sb_info *sbi, bool limit_rate, |
| const char *fmt, ...) |
| { |
| struct va_format vaf; |
| va_list args; |
| int level; |
| |
| va_start(args, fmt); |
| |
| level = printk_get_level(fmt); |
| vaf.fmt = printk_skip_level(fmt); |
| vaf.va = &args; |
| if (limit_rate) |
| printk_ratelimited("%c%cF2FS-fs (%s): %pV\n", |
| KERN_SOH_ASCII, level, sbi->sb->s_id, &vaf); |
| else |
| printk("%c%cF2FS-fs (%s): %pV\n", |
| KERN_SOH_ASCII, level, sbi->sb->s_id, &vaf); |
| |
| va_end(args); |
| } |
| |
| #if IS_ENABLED(CONFIG_UNICODE) |
| static const struct f2fs_sb_encodings { |
| __u16 magic; |
| char *name; |
| unsigned int version; |
| } f2fs_sb_encoding_map[] = { |
| {F2FS_ENC_UTF8_12_1, "utf8", UNICODE_AGE(12, 1, 0)}, |
| }; |
| |
| static const struct f2fs_sb_encodings * |
| f2fs_sb_read_encoding(const struct f2fs_super_block *sb) |
| { |
| __u16 magic = le16_to_cpu(sb->s_encoding); |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(f2fs_sb_encoding_map); i++) |
| if (magic == f2fs_sb_encoding_map[i].magic) |
| return &f2fs_sb_encoding_map[i]; |
| |
| return NULL; |
| } |
| |
| struct kmem_cache *f2fs_cf_name_slab; |
| static int __init f2fs_create_casefold_cache(void) |
| { |
| f2fs_cf_name_slab = f2fs_kmem_cache_create("f2fs_casefolded_name", |
| F2FS_NAME_LEN); |
| return f2fs_cf_name_slab ? 0 : -ENOMEM; |
| } |
| |
| static void f2fs_destroy_casefold_cache(void) |
| { |
| kmem_cache_destroy(f2fs_cf_name_slab); |
| } |
| #else |
| static int __init f2fs_create_casefold_cache(void) { return 0; } |
| static void f2fs_destroy_casefold_cache(void) { } |
| #endif |
| |
| static inline void limit_reserve_root(struct f2fs_sb_info *sbi) |
| { |
| block_t limit = min((sbi->user_block_count >> 3), |
| sbi->user_block_count - sbi->reserved_blocks); |
| |
| /* limit is 12.5% */ |
| if (test_opt(sbi, RESERVE_ROOT) && |
| F2FS_OPTION(sbi).root_reserved_blocks > limit) { |
| F2FS_OPTION(sbi).root_reserved_blocks = limit; |
| f2fs_info(sbi, "Reduce reserved blocks for root = %u", |
| F2FS_OPTION(sbi).root_reserved_blocks); |
| } |
| if (!test_opt(sbi, RESERVE_ROOT) && |
| (!uid_eq(F2FS_OPTION(sbi).s_resuid, |
| make_kuid(&init_user_ns, F2FS_DEF_RESUID)) || |
| !gid_eq(F2FS_OPTION(sbi).s_resgid, |
| make_kgid(&init_user_ns, F2FS_DEF_RESGID)))) |
| f2fs_info(sbi, "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root", |
| from_kuid_munged(&init_user_ns, |
| F2FS_OPTION(sbi).s_resuid), |
| from_kgid_munged(&init_user_ns, |
| F2FS_OPTION(sbi).s_resgid)); |
| } |
| |
| static inline void adjust_unusable_cap_perc(struct f2fs_sb_info *sbi) |
| { |
| if (!F2FS_OPTION(sbi).unusable_cap_perc) |
| return; |
| |
| if (F2FS_OPTION(sbi).unusable_cap_perc == 100) |
| F2FS_OPTION(sbi).unusable_cap = sbi->user_block_count; |
| else |
| F2FS_OPTION(sbi).unusable_cap = (sbi->user_block_count / 100) * |
| F2FS_OPTION(sbi).unusable_cap_perc; |
| |
| f2fs_info(sbi, "Adjust unusable cap for checkpoint=disable = %u / %u%%", |
| F2FS_OPTION(sbi).unusable_cap, |
| F2FS_OPTION(sbi).unusable_cap_perc); |
| } |
| |
| static void init_once(void *foo) |
| { |
| struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo; |
| |
| inode_init_once(&fi->vfs_inode); |
| } |
| |
| #ifdef CONFIG_QUOTA |
| static const char * const quotatypes[] = INITQFNAMES; |
| #define QTYPE2NAME(t) (quotatypes[t]) |
| static int f2fs_set_qf_name(struct super_block *sb, int qtype, |
| substring_t *args) |
| { |
| struct f2fs_sb_info *sbi = F2FS_SB(sb); |
| char *qname; |
| int ret = -EINVAL; |
| |
| if (sb_any_quota_loaded(sb) && !F2FS_OPTION(sbi).s_qf_names[qtype]) { |
| f2fs_err(sbi, "Cannot change journaled quota options when quota turned on"); |
| return -EINVAL; |
| } |
| if (f2fs_sb_has_quota_ino(sbi)) { |
| f2fs_info(sbi, "QUOTA feature is enabled, so ignore qf_name"); |
| return 0; |
| } |
| |
| qname = match_strdup(args); |
| if (!qname) { |
| f2fs_err(sbi, "Not enough memory for storing quotafile name"); |
| return -ENOMEM; |
| } |
| if (F2FS_OPTION(sbi).s_qf_names[qtype]) { |
| if (strcmp(F2FS_OPTION(sbi).s_qf_names[qtype], qname) == 0) |
| ret = 0; |
| else |
| f2fs_err(sbi, "%s quota file already specified", |
| QTYPE2NAME(qtype)); |
| goto errout; |
| } |
| if (strchr(qname, '/')) { |
| f2fs_err(sbi, "quotafile must be on filesystem root"); |
| goto errout; |
| } |
| F2FS_OPTION(sbi).s_qf_names[qtype] = qname; |
| set_opt(sbi, QUOTA); |
| return 0; |
| errout: |
| kfree(qname); |
| return ret; |
| } |
| |
| static int f2fs_clear_qf_name(struct super_block *sb, int qtype) |
| { |
| struct f2fs_sb_info *sbi = F2FS_SB(sb); |
| |
| if (sb_any_quota_loaded(sb) && F2FS_OPTION(sbi).s_qf_names[qtype]) { |
| f2fs_err(sbi, "Cannot change journaled quota options when quota turned on"); |
| return -EINVAL; |
| } |
| kfree(F2FS_OPTION(sbi).s_qf_names[qtype]); |
| F2FS_OPTION(sbi).s_qf_names[qtype] = NULL; |
| return 0; |
| } |
| |
| static int f2fs_check_quota_options(struct f2fs_sb_info *sbi) |
| { |
| /* |
| * We do the test below only for project quotas. 'usrquota' and |
| * 'grpquota' mount options are allowed even without quota feature |
| * to support legacy quotas in quota files. |
| */ |
| if (test_opt(sbi, PRJQUOTA) && !f2fs_sb_has_project_quota(sbi)) { |
| f2fs_err(sbi, "Project quota feature not enabled. Cannot enable project quota enforcement."); |
| return -1; |
| } |
| if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] || |
| F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] || |
| F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) { |
| if (test_opt(sbi, USRQUOTA) && |
| F2FS_OPTION(sbi).s_qf_names[USRQUOTA]) |
| clear_opt(sbi, USRQUOTA); |
| |
| if (test_opt(sbi, GRPQUOTA) && |
| F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]) |
| clear_opt(sbi, GRPQUOTA); |
| |
| if (test_opt(sbi, PRJQUOTA) && |
| F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) |
| clear_opt(sbi, PRJQUOTA); |
| |
| if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) || |
| test_opt(sbi, PRJQUOTA)) { |
| f2fs_err(sbi, "old and new quota format mixing"); |
| return -1; |
| } |
| |
| if (!F2FS_OPTION(sbi).s_jquota_fmt) { |
| f2fs_err(sbi, "journaled quota format not specified"); |
| return -1; |
| } |
| } |
| |
| if (f2fs_sb_has_quota_ino(sbi) && F2FS_OPTION(sbi).s_jquota_fmt) { |
| f2fs_info(sbi, "QUOTA feature is enabled, so ignore jquota_fmt"); |
| F2FS_OPTION(sbi).s_jquota_fmt = 0; |
| } |
| return 0; |
| } |
| #endif |
| |
| static int f2fs_set_test_dummy_encryption(struct super_block *sb, |
| const char *opt, |
| const substring_t *arg, |
| bool is_remount) |
| { |
| struct f2fs_sb_info *sbi = F2FS_SB(sb); |
| struct fs_parameter param = { |
| .type = fs_value_is_string, |
| .string = arg->from ? arg->from : "", |
| }; |
| struct fscrypt_dummy_policy *policy = |
| &F2FS_OPTION(sbi).dummy_enc_policy; |
| int err; |
| |
| if (!IS_ENABLED(CONFIG_FS_ENCRYPTION)) { |
| f2fs_warn(sbi, "test_dummy_encryption option not supported"); |
| return -EINVAL; |
| } |
| |
| if (!f2fs_sb_has_encrypt(sbi)) { |
| f2fs_err(sbi, "Encrypt feature is off"); |
| return -EINVAL; |
| } |
| |
| /* |
| * This mount option is just for testing, and it's not worthwhile to |
| * implement the extra complexity (e.g. RCU protection) that would be |
| * needed to allow it to be set or changed during remount. We do allow |
| * it to be specified during remount, but only if there is no change. |
| */ |
| if (is_remount && !fscrypt_is_dummy_policy_set(policy)) { |
| f2fs_warn(sbi, "Can't set test_dummy_encryption on remount"); |
| return -EINVAL; |
| } |
| |
| err = fscrypt_parse_test_dummy_encryption(¶m, policy); |
| if (err) { |
| if (err == -EEXIST) |
| f2fs_warn(sbi, |
| "Can't change test_dummy_encryption on remount"); |
| else if (err == -EINVAL) |
| f2fs_warn(sbi, "Value of option \"%s\" is unrecognized", |
| opt); |
| else |
| f2fs_warn(sbi, "Error processing option \"%s\" [%d]", |
| opt, err); |
| return -EINVAL; |
| } |
| f2fs_warn(sbi, "Test dummy encryption mode enabled"); |
| return 0; |
| } |
| |
| #ifdef CONFIG_F2FS_FS_COMPRESSION |
| static bool is_compress_extension_exist(struct f2fs_sb_info *sbi, |
| const char *new_ext, bool is_ext) |
| { |
| unsigned char (*ext)[F2FS_EXTENSION_LEN]; |
| int ext_cnt; |
| int i; |
| |
| if (is_ext) { |
| ext = F2FS_OPTION(sbi).extensions; |
| ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt; |
| } else { |
| ext = F2FS_OPTION(sbi).noextensions; |
| ext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt; |
| } |
| |
| for (i = 0; i < ext_cnt; i++) { |
| if (!strcasecmp(new_ext, ext[i])) |
| return true; |
| } |
| |
| return false; |
| } |
| |
| /* |
| * 1. The same extension name cannot not appear in both compress and non-compress extension |
| * at the same time. |
| * 2. If the compress extension specifies all files, the types specified by the non-compress |
| * extension will be treated as special cases and will not be compressed. |
| * 3. Don't allow the non-compress extension specifies all files. |
| */ |
| static int f2fs_test_compress_extension(struct f2fs_sb_info *sbi) |
| { |
| unsigned char (*ext)[F2FS_EXTENSION_LEN]; |
| unsigned char (*noext)[F2FS_EXTENSION_LEN]; |
| int ext_cnt, noext_cnt, index = 0, no_index = 0; |
| |
| ext = F2FS_OPTION(sbi).extensions; |
| ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt; |
| noext = F2FS_OPTION(sbi).noextensions; |
| noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt; |
| |
| if (!noext_cnt) |
| return 0; |
| |
| for (no_index = 0; no_index < noext_cnt; no_index++) { |
| if (!strcasecmp("*", noext[no_index])) { |
| f2fs_info(sbi, "Don't allow the nocompress extension specifies all files"); |
| return -EINVAL; |
| } |
| for (index = 0; index < ext_cnt; index++) { |
| if (!strcasecmp(ext[index], noext[no_index])) { |
| f2fs_info(sbi, "Don't allow the same extension %s appear in both compress and nocompress extension", |
| ext[index]); |
| return -EINVAL; |
| } |
| } |
| } |
| return 0; |
| } |
| |
| #ifdef CONFIG_F2FS_FS_LZ4 |
| static int f2fs_set_lz4hc_level(struct f2fs_sb_info *sbi, const char *str) |
| { |
| #ifdef CONFIG_F2FS_FS_LZ4HC |
| unsigned int level; |
| |
| if (strlen(str) == 3) { |
| F2FS_OPTION(sbi).compress_level = 0; |
| return 0; |
| } |
| |
| str += 3; |
| |
| if (str[0] != ':') { |
| f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>"); |
| return -EINVAL; |
| } |
| if (kstrtouint(str + 1, 10, &level)) |
| return -EINVAL; |
| |
| if (!f2fs_is_compress_level_valid(COMPRESS_LZ4, level)) { |
| f2fs_info(sbi, "invalid lz4hc compress level: %d", level); |
| return -EINVAL; |
| } |
| |
| F2FS_OPTION(sbi).compress_level = level; |
| return 0; |
| #else |
| if (strlen(str) == 3) { |
| F2FS_OPTION(sbi).compress_level = 0; |
| return 0; |
| } |
| f2fs_info(sbi, "kernel doesn't support lz4hc compression"); |
| return -EINVAL; |
| #endif |
| } |
| #endif |
| |
| #ifdef CONFIG_F2FS_FS_ZSTD |
| static int f2fs_set_zstd_level(struct f2fs_sb_info *sbi, const char *str) |
| { |
| int level; |
| int len = 4; |
| |
| if (strlen(str) == len) { |
| F2FS_OPTION(sbi).compress_level = F2FS_ZSTD_DEFAULT_CLEVEL; |
| return 0; |
| } |
| |
| str += len; |
| |
| if (str[0] != ':') { |
| f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>"); |
| return -EINVAL; |
| } |
| if (kstrtoint(str + 1, 10, &level)) |
| return -EINVAL; |
| |
| /* f2fs does not support negative compress level now */ |
| if (level < 0) { |
| f2fs_info(sbi, "do not support negative compress level: %d", level); |
| return -ERANGE; |
| } |
| |
| if (!f2fs_is_compress_level_valid(COMPRESS_ZSTD, level)) { |
| f2fs_info(sbi, "invalid zstd compress level: %d", level); |
| return -EINVAL; |
| } |
| |
| F2FS_OPTION(sbi).compress_level = level; |
| return 0; |
| } |
| #endif |
| #endif |
| |
| static int parse_options(struct super_block *sb, char *options, bool is_remount) |
| { |
| struct f2fs_sb_info *sbi = F2FS_SB(sb); |
| substring_t args[MAX_OPT_ARGS]; |
| #ifdef CONFIG_F2FS_FS_COMPRESSION |
| unsigned char (*ext)[F2FS_EXTENSION_LEN]; |
| unsigned char (*noext)[F2FS_EXTENSION_LEN]; |
| int ext_cnt, noext_cnt; |
| #endif |
| char *p, *name; |
| int arg = 0; |
| kuid_t uid; |
| kgid_t gid; |
| int ret; |
| |
| if (!options) |
| goto default_check; |
| |
| while ((p = strsep(&options, ",")) != NULL) { |
| int token; |
| |
| if (!*p) |
| continue; |
| /* |
| * Initialize args struct so we know whether arg was |
| * found; some options take optional arguments. |
| */ |
| args[0].to = args[0].from = NULL; |
| token = match_token(p, f2fs_tokens, args); |
| |
| switch (token) { |
| case Opt_gc_background: |
| name = match_strdup(&args[0]); |
| |
| if (!name) |
| return -ENOMEM; |
| if (!strcmp(name, "on")) { |
| F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON; |
| } else if (!strcmp(name, "off")) { |
| F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_OFF; |
| } else if (!strcmp(name, "sync")) { |
| F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_SYNC; |
| } else { |
| kfree(name); |
| return -EINVAL; |
| } |
| kfree(name); |
| break; |
| case Opt_disable_roll_forward: |
| set_opt(sbi, DISABLE_ROLL_FORWARD); |
| break; |
| case Opt_norecovery: |
| /* this option mounts f2fs with ro */ |
| set_opt(sbi, NORECOVERY); |
| if (!f2fs_readonly(sb)) |
| return -EINVAL; |
| break; |
| case Opt_discard: |
| if (!f2fs_hw_support_discard(sbi)) { |
| f2fs_warn(sbi, "device does not support discard"); |
| break; |
| } |
| set_opt(sbi, DISCARD); |
| break; |
| case Opt_nodiscard: |
| if (f2fs_hw_should_discard(sbi)) { |
| f2fs_warn(sbi, "discard is required for zoned block devices"); |
| return -EINVAL; |
| } |
| clear_opt(sbi, DISCARD); |
| break; |
| case Opt_noheap: |
| case Opt_heap: |
| f2fs_warn(sbi, "heap/no_heap options were deprecated"); |
| break; |
| #ifdef CONFIG_F2FS_FS_XATTR |
| case Opt_user_xattr: |
| set_opt(sbi, XATTR_USER); |
| break; |
| case Opt_nouser_xattr: |
| clear_opt(sbi, XATTR_USER); |
| break; |
| case Opt_inline_xattr: |
| set_opt(sbi, INLINE_XATTR); |
| break; |
| case Opt_noinline_xattr: |
| clear_opt(sbi, INLINE_XATTR); |
| break; |
| case Opt_inline_xattr_size: |
| if (args->from && match_int(args, &arg)) |
| return -EINVAL; |
| set_opt(sbi, INLINE_XATTR_SIZE); |
| F2FS_OPTION(sbi).inline_xattr_size = arg; |
| break; |
| #else |
| case Opt_user_xattr: |
| f2fs_info(sbi, "user_xattr options not supported"); |
| break; |
| case Opt_nouser_xattr: |
| f2fs_info(sbi, "nouser_xattr options not supported"); |
| break; |
| case Opt_inline_xattr: |
| f2fs_info(sbi, "inline_xattr options not supported"); |
| break; |
| case Opt_noinline_xattr: |
| f2fs_info(sbi, "noinline_xattr options not supported"); |
| break; |
| #endif |
| #ifdef CONFIG_F2FS_FS_POSIX_ACL |
| case Opt_acl: |
| set_opt(sbi, POSIX_ACL); |
| break; |
| case Opt_noacl: |
| clear_opt(sbi, POSIX_ACL); |
| break; |
| #else |
| case Opt_acl: |
| f2fs_info(sbi, "acl options not supported"); |
| break; |
| case Opt_noacl: |
| f2fs_info(sbi, "noacl options not supported"); |
| break; |
| #endif |
| case Opt_active_logs: |
| if (args->from && match_int(args, &arg)) |
| return -EINVAL; |
| if (arg != 2 && arg != 4 && |
| arg != NR_CURSEG_PERSIST_TYPE) |
| return -EINVAL; |
| F2FS_OPTION(sbi).active_logs = arg; |
| break; |
| case Opt_disable_ext_identify: |
| set_opt(sbi, DISABLE_EXT_IDENTIFY); |
| break; |
| case Opt_inline_data: |
| set_opt(sbi, INLINE_DATA); |
| break; |
| case Opt_inline_dentry: |
| set_opt(sbi, INLINE_DENTRY); |
| break; |
| case Opt_noinline_dentry: |
| clear_opt(sbi, INLINE_DENTRY); |
| break; |
| case Opt_flush_merge: |
| set_opt(sbi, FLUSH_MERGE); |
| break; |
| case Opt_noflush_merge: |
| clear_opt(sbi, FLUSH_MERGE); |
| break; |
| case Opt_nobarrier: |
| set_opt(sbi, NOBARRIER); |
| break; |
| case Opt_barrier: |
| clear_opt(sbi, NOBARRIER); |
| break; |
| case Opt_fastboot: |
| set_opt(sbi, FASTBOOT); |
| break; |
| case Opt_extent_cache: |
| set_opt(sbi, READ_EXTENT_CACHE); |
| break; |
| case Opt_noextent_cache: |
| clear_opt(sbi, READ_EXTENT_CACHE); |
| break; |
| case Opt_noinline_data: |
| clear_opt(sbi, INLINE_DATA); |
| break; |
| case Opt_data_flush: |
| set_opt(sbi, DATA_FLUSH); |
| break; |
| case Opt_reserve_root: |
| if (args->from && match_int(args, &arg)) |
| return -EINVAL; |
| if (test_opt(sbi, RESERVE_ROOT)) { |
| f2fs_info(sbi, "Preserve previous reserve_root=%u", |
| F2FS_OPTION(sbi).root_reserved_blocks); |
| } else { |
| F2FS_OPTION(sbi).root_reserved_blocks = arg; |
| set_opt(sbi, RESERVE_ROOT); |
| } |
| break; |
| case Opt_resuid: |
| if (args->from && match_int(args, &arg)) |
| return -EINVAL; |
| uid = make_kuid(current_user_ns(), arg); |
| if (!uid_valid(uid)) { |
| f2fs_err(sbi, "Invalid uid value %d", arg); |
| return -EINVAL; |
| } |
| F2FS_OPTION(sbi).s_resuid = uid; |
| break; |
| case Opt_resgid: |
| if (args->from && match_int(args, &arg)) |
| return -EINVAL; |
| gid = make_kgid(current_user_ns(), arg); |
| if (!gid_valid(gid)) { |
| f2fs_err(sbi, "Invalid gid value %d", arg); |
| return -EINVAL; |
| } |
| F2FS_OPTION(sbi).s_resgid = gid; |
| break; |
| case Opt_mode: |
| name = match_strdup(&args[0]); |
| |
| if (!name) |
| return -ENOMEM; |
| if (!strcmp(name, "adaptive")) { |
| F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE; |
| } else if (!strcmp(name, "lfs")) { |
| F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS; |
| } else if (!strcmp(name, "fragment:segment")) { |
| F2FS_OPTION(sbi).fs_mode = FS_MODE_FRAGMENT_SEG; |
| } else if (!strcmp(name, "fragment:block")) { |
| F2FS_OPTION(sbi).fs_mode = FS_MODE_FRAGMENT_BLK; |
| } else { |
| kfree(name); |
| return -EINVAL; |
| } |
| kfree(name); |
| break; |
| #ifdef CONFIG_F2FS_FAULT_INJECTION |
| case Opt_fault_injection: |
| if (args->from && match_int(args, &arg)) |
| return -EINVAL; |
| if (f2fs_build_fault_attr(sbi, arg, |
| F2FS_ALL_FAULT_TYPE)) |
| return -EINVAL; |
| set_opt(sbi, FAULT_INJECTION); |
| break; |
| |
| case Opt_fault_type: |
| if (args->from && match_int(args, &arg)) |
| return -EINVAL; |
| if (f2fs_build_fault_attr(sbi, 0, arg)) |
| return -EINVAL; |
| set_opt(sbi, FAULT_INJECTION); |
| break; |
| #else |
| case Opt_fault_injection: |
| f2fs_info(sbi, "fault_injection options not supported"); |
| break; |
| |
| case Opt_fault_type: |
| f2fs_info(sbi, "fault_type options not supported"); |
| break; |
| #endif |
| #ifdef CONFIG_QUOTA |
| case Opt_quota: |
| case Opt_usrquota: |
| set_opt(sbi, USRQUOTA); |
| break; |
| case Opt_grpquota: |
| set_opt(sbi, GRPQUOTA); |
| break; |
| case Opt_prjquota: |
| set_opt(sbi, PRJQUOTA); |
| break; |
| case Opt_usrjquota: |
| ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]); |
| if (ret) |
| return ret; |
| break; |
| case Opt_grpjquota: |
| ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]); |
| if (ret) |
| return ret; |
| break; |
| case Opt_prjjquota: |
| ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]); |
| if (ret) |
| return ret; |
| break; |
| case Opt_offusrjquota: |
| ret = f2fs_clear_qf_name(sb, USRQUOTA); |
| if (ret) |
| return ret; |
| break; |
| case Opt_offgrpjquota: |
| ret = f2fs_clear_qf_name(sb, GRPQUOTA); |
| if (ret) |
| return ret; |
| break; |
| case Opt_offprjjquota: |
| ret = f2fs_clear_qf_name(sb, PRJQUOTA); |
| if (ret) |
| return ret; |
| break; |
| case Opt_jqfmt_vfsold: |
| F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD; |
| break; |
| case Opt_jqfmt_vfsv0: |
| F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0; |
| break; |
| case Opt_jqfmt_vfsv1: |
| F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1; |
| break; |
| case Opt_noquota: |
| clear_opt(sbi, QUOTA); |
| clear_opt(sbi, USRQUOTA); |
| clear_opt(sbi, GRPQUOTA); |
| clear_opt(sbi, PRJQUOTA); |
| break; |
| #else |
| case Opt_quota: |
| case Opt_usrquota: |
| case Opt_grpquota: |
| case Opt_prjquota: |
| case Opt_usrjquota: |
| case Opt_grpjquota: |
| case Opt_prjjquota: |
| case Opt_offusrjquota: |
| case Opt_offgrpjquota: |
| case Opt_offprjjquota: |
| case Opt_jqfmt_vfsold: |
| case Opt_jqfmt_vfsv0: |
| case Opt_jqfmt_vfsv1: |
| case Opt_noquota: |
| f2fs_info(sbi, "quota operations not supported"); |
| break; |
| #endif |
| case Opt_alloc: |
| name = match_strdup(&args[0]); |
| if (!name) |
| return -ENOMEM; |
| |
| if (!strcmp(name, "default")) { |
| F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT; |
| } else if (!strcmp(name, "reuse")) { |
| F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE; |
| } else { |
| kfree(name); |
| return -EINVAL; |
| } |
| kfree(name); |
| break; |
| case Opt_fsync: |
| name = match_strdup(&args[0]); |
| if (!name) |
| return -ENOMEM; |
| if (!strcmp(name, "posix")) { |
| F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX; |
| } else if (!strcmp(name, "strict")) { |
| F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT; |
| } else if (!strcmp(name, "nobarrier")) { |
| F2FS_OPTION(sbi).fsync_mode = |
| FSYNC_MODE_NOBARRIER; |
| } else { |
| kfree(name); |
| return -EINVAL; |
| } |
| kfree(name); |
| break; |
| case Opt_test_dummy_encryption: |
| ret = f2fs_set_test_dummy_encryption(sb, p, &args[0], |
| is_remount); |
| if (ret) |
| return ret; |
| break; |
| case Opt_inlinecrypt: |
| #ifdef CONFIG_FS_ENCRYPTION_INLINE_CRYPT |
| sb->s_flags |= SB_INLINECRYPT; |
| #else |
| f2fs_info(sbi, "inline encryption not supported"); |
| #endif |
| break; |
| case Opt_checkpoint_disable_cap_perc: |
| if (args->from && match_int(args, &arg)) |
| return -EINVAL; |
| if (arg < 0 || arg > 100) |
| return -EINVAL; |
| F2FS_OPTION(sbi).unusable_cap_perc = arg; |
| set_opt(sbi, DISABLE_CHECKPOINT); |
| break; |
| case Opt_checkpoint_disable_cap: |
| if (args->from && match_int(args, &arg)) |
| return -EINVAL; |
| F2FS_OPTION(sbi).unusable_cap = arg; |
| set_opt(sbi, DISABLE_CHECKPOINT); |
| break; |
| case Opt_checkpoint_disable: |
| set_opt(sbi, DISABLE_CHECKPOINT); |
| break; |
| case Opt_checkpoint_enable: |
| clear_opt(sbi, DISABLE_CHECKPOINT); |
| break; |
| case Opt_checkpoint_merge: |
| set_opt(sbi, MERGE_CHECKPOINT); |
| break; |
| case Opt_nocheckpoint_merge: |
| clear_opt(sbi, MERGE_CHECKPOINT); |
| break; |
| #ifdef CONFIG_F2FS_FS_COMPRESSION |
| case Opt_compress_algorithm: |
| if (!f2fs_sb_has_compression(sbi)) { |
| f2fs_info(sbi, "Image doesn't support compression"); |
| break; |
| } |
| name = match_strdup(&args[0]); |
| if (!name) |
| return -ENOMEM; |
| if (!strcmp(name, "lzo")) { |
| #ifdef CONFIG_F2FS_FS_LZO |
| F2FS_OPTION(sbi).compress_level = 0; |
| F2FS_OPTION(sbi).compress_algorithm = |
| COMPRESS_LZO; |
| #else |
| f2fs_info(sbi, "kernel doesn't support lzo compression"); |
| #endif |
| } else if (!strncmp(name, "lz4", 3)) { |
| #ifdef CONFIG_F2FS_FS_LZ4 |
| ret = f2fs_set_lz4hc_level(sbi, name); |
| if (ret) { |
| kfree(name); |
| return -EINVAL; |
| } |
| F2FS_OPTION(sbi).compress_algorithm = |
| COMPRESS_LZ4; |
| #else |
| f2fs_info(sbi, "kernel doesn't support lz4 compression"); |
| #endif |
| } else if (!strncmp(name, "zstd", 4)) { |
| #ifdef CONFIG_F2FS_FS_ZSTD |
| ret = f2fs_set_zstd_level(sbi, name); |
| if (ret) { |
| kfree(name); |
| return -EINVAL; |
| } |
| F2FS_OPTION(sbi).compress_algorithm = |
| COMPRESS_ZSTD; |
| #else |
| f2fs_info(sbi, "kernel doesn't support zstd compression"); |
| #endif |
| } else if (!strcmp(name, "lzo-rle")) { |
| #ifdef CONFIG_F2FS_FS_LZORLE |
| F2FS_OPTION(sbi).compress_level = 0; |
| F2FS_OPTION(sbi).compress_algorithm = |
| COMPRESS_LZORLE; |
| #else |
| f2fs_info(sbi, "kernel doesn't support lzorle compression"); |
| #endif |
| } else { |
| kfree(name); |
| return -EINVAL; |
| } |
| kfree(name); |
| break; |
| case Opt_compress_log_size: |
| if (!f2fs_sb_has_compression(sbi)) { |
| f2fs_info(sbi, "Image doesn't support compression"); |
| break; |
| } |
| if (args->from && match_int(args, &arg)) |
| return -EINVAL; |
| if (arg < MIN_COMPRESS_LOG_SIZE || |
| arg > MAX_COMPRESS_LOG_SIZE) { |
| f2fs_err(sbi, |
| "Compress cluster log size is out of range"); |
| return -EINVAL; |
| } |
| F2FS_OPTION(sbi).compress_log_size = arg; |
| break; |
| case Opt_compress_extension: |
| if (!f2fs_sb_has_compression(sbi)) { |
| f2fs_info(sbi, "Image doesn't support compression"); |
| break; |
| } |
| name = match_strdup(&args[0]); |
| if (!name) |
| return -ENOMEM; |
| |
| ext = F2FS_OPTION(sbi).extensions; |
| ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt; |
| |
| if (strlen(name) >= F2FS_EXTENSION_LEN || |
| ext_cnt >= COMPRESS_EXT_NUM) { |
| f2fs_err(sbi, |
| "invalid extension length/number"); |
| kfree(name); |
| return -EINVAL; |
| } |
| |
| if (is_compress_extension_exist(sbi, name, true)) { |
| kfree(name); |
| break; |
| } |
| |
| strcpy(ext[ext_cnt], name); |
| F2FS_OPTION(sbi).compress_ext_cnt++; |
| kfree(name); |
| break; |
| case Opt_nocompress_extension: |
| if (!f2fs_sb_has_compression(sbi)) { |
| f2fs_info(sbi, "Image doesn't support compression"); |
| break; |
| } |
| name = match_strdup(&args[0]); |
| if (!name) |
| return -ENOMEM; |
| |
| noext = F2FS_OPTION(sbi).noextensions; |
| noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt; |
| |
| if (strlen(name) >= F2FS_EXTENSION_LEN || |
| noext_cnt >= COMPRESS_EXT_NUM) { |
| f2fs_err(sbi, |
| "invalid extension length/number"); |
| kfree(name); |
| return -EINVAL; |
| } |
| |
| if (is_compress_extension_exist(sbi, name, false)) { |
| kfree(name); |
| break; |
| } |
| |
| strcpy(noext[noext_cnt], name); |
| F2FS_OPTION(sbi).nocompress_ext_cnt++; |
| kfree(name); |
| break; |
| case Opt_compress_chksum: |
| if (!f2fs_sb_has_compression(sbi)) { |
| f2fs_info(sbi, "Image doesn't support compression"); |
| break; |
| } |
| F2FS_OPTION(sbi).compress_chksum = true; |
| break; |
| case Opt_compress_mode: |
| if (!f2fs_sb_has_compression(sbi)) { |
| f2fs_info(sbi, "Image doesn't support compression"); |
| break; |
| } |
| name = match_strdup(&args[0]); |
| if (!name) |
| return -ENOMEM; |
| if (!strcmp(name, "fs")) { |
| F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS; |
| } else if (!strcmp(name, "user")) { |
| F2FS_OPTION(sbi).compress_mode = COMPR_MODE_USER; |
| } else { |
| kfree(name); |
| return -EINVAL; |
| } |
| kfree(name); |
| break; |
| case Opt_compress_cache: |
| if (!f2fs_sb_has_compression(sbi)) { |
| f2fs_info(sbi, "Image doesn't support compression"); |
| break; |
| } |
| set_opt(sbi, COMPRESS_CACHE); |
| break; |
| #else |
| case Opt_compress_algorithm: |
| case Opt_compress_log_size: |
| case Opt_compress_extension: |
| case Opt_nocompress_extension: |
| case Opt_compress_chksum: |
| case Opt_compress_mode: |
| case Opt_compress_cache: |
| f2fs_info(sbi, "compression options not supported"); |
| break; |
| #endif |
| case Opt_atgc: |
| set_opt(sbi, ATGC); |
| break; |
| case Opt_gc_merge: |
| set_opt(sbi, GC_MERGE); |
| break; |
| case Opt_nogc_merge: |
| clear_opt(sbi, GC_MERGE); |
| break; |
| case Opt_discard_unit: |
| name = match_strdup(&args[0]); |
| if (!name) |
| return -ENOMEM; |
| if (!strcmp(name, "block")) { |
| F2FS_OPTION(sbi).discard_unit = |
| DISCARD_UNIT_BLOCK; |
| } else if (!strcmp(name, "segment")) { |
| F2FS_OPTION(sbi).discard_unit = |
| DISCARD_UNIT_SEGMENT; |
| } else if (!strcmp(name, "section")) { |
| F2FS_OPTION(sbi).discard_unit = |
| DISCARD_UNIT_SECTION; |
| } else { |
| kfree(name); |
| return -EINVAL; |
| } |
| kfree(name); |
| break; |
| case Opt_memory_mode: |
| name = match_strdup(&args[0]); |
| if (!name) |
| return -ENOMEM; |
| if (!strcmp(name, "normal")) { |
| F2FS_OPTION(sbi).memory_mode = |
| MEMORY_MODE_NORMAL; |
| } else if (!strcmp(name, "low")) { |
| F2FS_OPTION(sbi).memory_mode = |
| MEMORY_MODE_LOW; |
| } else { |
| kfree(name); |
| return -EINVAL; |
| } |
| kfree(name); |
| break; |
| case Opt_age_extent_cache: |
| set_opt(sbi, AGE_EXTENT_CACHE); |
| break; |
| case Opt_errors: |
| name = match_strdup(&args[0]); |
| if (!name) |
| return -ENOMEM; |
| if (!strcmp(name, "remount-ro")) { |
| F2FS_OPTION(sbi).errors = |
| MOUNT_ERRORS_READONLY; |
| } else if (!strcmp(name, "continue")) { |
| F2FS_OPTION(sbi).errors = |
| MOUNT_ERRORS_CONTINUE; |
| } else if (!strcmp(name, "panic")) { |
| F2FS_OPTION(sbi).errors = |
| MOUNT_ERRORS_PANIC; |
| } else { |
| kfree(name); |
| return -EINVAL; |
| } |
| kfree(name); |
| break; |
| default: |
| f2fs_err(sbi, "Unrecognized mount option \"%s\" or missing value", |
| p); |
| return -EINVAL; |
| } |
| } |
| default_check: |
| #ifdef CONFIG_QUOTA |
| if (f2fs_check_quota_options(sbi)) |
| return -EINVAL; |
| #else |
| if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sbi->sb)) { |
| f2fs_info(sbi, "Filesystem with quota feature cannot be mounted RDWR without CONFIG_QUOTA"); |
| return -EINVAL; |
| } |
| if (f2fs_sb_has_project_quota(sbi) && !f2fs_readonly(sbi->sb)) { |
| f2fs_err(sbi, "Filesystem with project quota feature cannot be mounted RDWR without CONFIG_QUOTA"); |
| return -EINVAL; |
| } |
| #endif |
| |
| if (!IS_ENABLED(CONFIG_UNICODE) && f2fs_sb_has_casefold(sbi)) { |
| f2fs_err(sbi, |
| "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE"); |
| return -EINVAL; |
| } |
| |
| /* |
| * The BLKZONED feature indicates that the drive was formatted with |
| * zone alignment optimization. This is optional for host-aware |
| * devices, but mandatory for host-managed zoned block devices. |
| */ |
| if (f2fs_sb_has_blkzoned(sbi)) { |
| #ifdef CONFIG_BLK_DEV_ZONED |
| if (F2FS_OPTION(sbi).discard_unit != |
| DISCARD_UNIT_SECTION) { |
| f2fs_info(sbi, "Zoned block device doesn't need small discard, set discard_unit=section by default"); |
| F2FS_OPTION(sbi).discard_unit = |
| DISCARD_UNIT_SECTION; |
| } |
| |
| if (F2FS_OPTION(sbi).fs_mode != FS_MODE_LFS) { |
| f2fs_info(sbi, "Only lfs mode is allowed with zoned block device feature"); |
| return -EINVAL; |
| } |
| #else |
| f2fs_err(sbi, "Zoned block device support is not enabled"); |
| return -EINVAL; |
| #endif |
| } |
| |
| #ifdef CONFIG_F2FS_FS_COMPRESSION |
| if (f2fs_test_compress_extension(sbi)) { |
| f2fs_err(sbi, "invalid compress or nocompress extension"); |
| return -EINVAL; |
| } |
| #endif |
| |
| if (test_opt(sbi, INLINE_XATTR_SIZE)) { |
| int min_size, max_size; |
| |
| if (!f2fs_sb_has_extra_attr(sbi) || |
| !f2fs_sb_has_flexible_inline_xattr(sbi)) { |
| f2fs_err(sbi, "extra_attr or flexible_inline_xattr feature is off"); |
| return -EINVAL; |
| } |
| if (!test_opt(sbi, INLINE_XATTR)) { |
| f2fs_err(sbi, "inline_xattr_size option should be set with inline_xattr option"); |
| return -EINVAL; |
| } |
| |
| min_size = MIN_INLINE_XATTR_SIZE; |
| max_size = MAX_INLINE_XATTR_SIZE; |
| |
| if (F2FS_OPTION(sbi).inline_xattr_size < min_size || |
| F2FS_OPTION(sbi).inline_xattr_size > max_size) { |
| f2fs_err(sbi, "inline xattr size is out of range: %d ~ %d", |
| min_size, max_size); |
| return -EINVAL; |
| } |
| } |
| |
| if (test_opt(sbi, ATGC) && f2fs_lfs_mode(sbi)) { |
| f2fs_err(sbi, "LFS is not compatible with ATGC"); |
| return -EINVAL; |
| } |
| |
| if (f2fs_is_readonly(sbi) && test_opt(sbi, FLUSH_MERGE)) { |
| f2fs_err(sbi, "FLUSH_MERGE not compatible with readonly mode"); |
| return -EINVAL; |
| } |
| |
| if (f2fs_sb_has_readonly(sbi) && !f2fs_readonly(sbi->sb)) { |
| f2fs_err(sbi, "Allow to mount readonly mode only"); |
| return -EROFS; |
| } |
| return 0; |
| } |
| |
| static struct inode *f2fs_alloc_inode(struct super_block *sb) |
| { |
| struct f2fs_inode_info *fi; |
| |
| if (time_to_inject(F2FS_SB(sb), FAULT_SLAB_ALLOC)) |
| return NULL; |
| |
| fi = alloc_inode_sb(sb, f2fs_inode_cachep, GFP_F2FS_ZERO); |
| if (!fi) |
| return NULL; |
| |
| init_once((void *) fi); |
| |
| /* Initialize f2fs-specific inode info */ |
| atomic_set(&fi->dirty_pages, 0); |
| atomic_set(&fi->i_compr_blocks, 0); |
| init_f2fs_rwsem(&fi->i_sem); |
| spin_lock_init(&fi->i_size_lock); |
| INIT_LIST_HEAD(&fi->dirty_list); |
| INIT_LIST_HEAD(&fi->gdirty_list); |
| init_f2fs_rwsem(&fi->i_gc_rwsem[READ]); |
| init_f2fs_rwsem(&fi->i_gc_rwsem[WRITE]); |
| init_f2fs_rwsem(&fi->i_xattr_sem); |
| |
| /* Will be used by directory only */ |
| fi->i_dir_level = F2FS_SB(sb)->dir_level; |
| |
| return &fi->vfs_inode; |
| } |
| |
| static int f2fs_drop_inode(struct inode *inode) |
| { |
| struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| int ret; |
| |
| /* |
| * during filesystem shutdown, if checkpoint is disabled, |
| * drop useless meta/node dirty pages. |
| */ |
| if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) { |
| if (inode->i_ino == F2FS_NODE_INO(sbi) || |
| inode->i_ino == F2FS_META_INO(sbi)) { |
| trace_f2fs_drop_inode(inode, 1); |
| return 1; |
| } |
| } |
| |
| /* |
| * This is to avoid a deadlock condition like below. |
| * writeback_single_inode(inode) |
| * - f2fs_write_data_page |
| * - f2fs_gc -> iput -> evict |
| * - inode_wait_for_writeback(inode) |
| */ |
| if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) { |
| if (!inode->i_nlink && !is_bad_inode(inode)) { |
| /* to avoid evict_inode call simultaneously */ |
| atomic_inc(&inode->i_count); |
| spin_unlock(&inode->i_lock); |
| |
| /* should remain fi->extent_tree for writepage */ |
| f2fs_destroy_extent_node(inode); |
| |
| sb_start_intwrite(inode->i_sb); |
| f2fs_i_size_write(inode, 0); |
| |
| f2fs_submit_merged_write_cond(F2FS_I_SB(inode), |
| inode, NULL, 0, DATA); |
| truncate_inode_pages_final(inode->i_mapping); |
| |
| if (F2FS_HAS_BLOCKS(inode)) |
| f2fs_truncate(inode); |
| |
| sb_end_intwrite(inode->i_sb); |
| |
| spin_lock(&inode->i_lock); |
| atomic_dec(&inode->i_count); |
| } |
| trace_f2fs_drop_inode(inode, 0); |
| return 0; |
| } |
| ret = generic_drop_inode(inode); |
| if (!ret) |
| ret = fscrypt_drop_inode(inode); |
| trace_f2fs_drop_inode(inode, ret); |
| return ret; |
| } |
| |
| int f2fs_inode_dirtied(struct inode *inode, bool sync) |
| { |
| struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| int ret = 0; |
| |
| spin_lock(&sbi->inode_lock[DIRTY_META]); |
| if (is_inode_flag_set(inode, FI_DIRTY_INODE)) { |
| ret = 1; |
| } else { |
| set_inode_flag(inode, FI_DIRTY_INODE); |
| stat_inc_dirty_inode(sbi, DIRTY_META); |
| } |
| if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) { |
| list_add_tail(&F2FS_I(inode)->gdirty_list, |
| &sbi->inode_list[DIRTY_META]); |
| inc_page_count(sbi, F2FS_DIRTY_IMETA); |
| } |
| spin_unlock(&sbi->inode_lock[DIRTY_META]); |
| return ret; |
| } |
| |
| void f2fs_inode_synced(struct inode *inode) |
| { |
| struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| |
| spin_lock(&sbi->inode_lock[DIRTY_META]); |
| if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) { |
| spin_unlock(&sbi->inode_lock[DIRTY_META]); |
| return; |
| } |
| if (!list_empty(&F2FS_I(inode)->gdirty_list)) { |
| list_del_init(&F2FS_I(inode)->gdirty_list); |
| dec_page_count(sbi, F2FS_DIRTY_IMETA); |
| } |
| clear_inode_flag(inode, FI_DIRTY_INODE); |
| clear_inode_flag(inode, FI_AUTO_RECOVER); |
| stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META); |
| spin_unlock(&sbi->inode_lock[DIRTY_META]); |
| } |
| |
| /* |
| * f2fs_dirty_inode() is called from __mark_inode_dirty() |
| * |
| * We should call set_dirty_inode to write the dirty inode through write_inode. |
| */ |
| static void f2fs_dirty_inode(struct inode *inode, int flags) |
| { |
| struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| |
| if (inode->i_ino == F2FS_NODE_INO(sbi) || |
| inode->i_ino == F2FS_META_INO(sbi)) |
| return; |
| |
| if (is_inode_flag_set(inode, FI_AUTO_RECOVER)) |
| clear_inode_flag(inode, FI_AUTO_RECOVER); |
| |
| f2fs_inode_dirtied(inode, false); |
| } |
| |
| static void f2fs_free_inode(struct inode *inode) |
| { |
| fscrypt_free_inode(inode); |
| kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode)); |
| } |
| |
| static void destroy_percpu_info(struct f2fs_sb_info *sbi) |
| { |
| percpu_counter_destroy(&sbi->total_valid_inode_count); |
| percpu_counter_destroy(&sbi->rf_node_block_count); |
| percpu_counter_destroy(&sbi->alloc_valid_block_count); |
| } |
| |
| static void destroy_device_list(struct f2fs_sb_info *sbi) |
| { |
| int i; |
| |
| for (i = 0; i < sbi->s_ndevs; i++) { |
| if (i > 0) |
| bdev_fput(FDEV(i).bdev_file); |
| #ifdef CONFIG_BLK_DEV_ZONED |
| kvfree(FDEV(i).blkz_seq); |
| #endif |
| } |
| kvfree(sbi->devs); |
| } |
| |
| static void f2fs_put_super(struct super_block *sb) |
| { |
| struct f2fs_sb_info *sbi = F2FS_SB(sb); |
| int i; |
| int err = 0; |
| bool done; |
| |
| /* unregister procfs/sysfs entries in advance to avoid race case */ |
| f2fs_unregister_sysfs(sbi); |
| |
| f2fs_quota_off_umount(sb); |
| |
| /* prevent remaining shrinker jobs */ |
| mutex_lock(&sbi->umount_mutex); |
| |
| /* |
| * flush all issued checkpoints and stop checkpoint issue thread. |
| * after then, all checkpoints should be done by each process context. |
| */ |
| f2fs_stop_ckpt_thread(sbi); |
| |
| /* |
| * We don't need to do checkpoint when superblock is clean. |
| * But, the previous checkpoint was not done by umount, it needs to do |
| * clean checkpoint again. |
| */ |
| if ((is_sbi_flag_set(sbi, SBI_IS_DIRTY) || |
| !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))) { |
| struct cp_control cpc = { |
| .reason = CP_UMOUNT, |
| }; |
| stat_inc_cp_call_count(sbi, TOTAL_CALL); |
| err = f2fs_write_checkpoint(sbi, &cpc); |
| } |
| |
| /* be sure to wait for any on-going discard commands */ |
| done = f2fs_issue_discard_timeout(sbi); |
| if (f2fs_realtime_discard_enable(sbi) && !sbi->discard_blks && done) { |
| struct cp_control cpc = { |
| .reason = CP_UMOUNT | CP_TRIMMED, |
| }; |
| stat_inc_cp_call_count(sbi, TOTAL_CALL); |
| err = f2fs_write_checkpoint(sbi, &cpc); |
| } |
| |
| /* |
| * normally superblock is clean, so we need to release this. |
| * In addition, EIO will skip do checkpoint, we need this as well. |
| */ |
| f2fs_release_ino_entry(sbi, true); |
| |
| f2fs_leave_shrinker(sbi); |
| mutex_unlock(&sbi->umount_mutex); |
| |
| /* our cp_error case, we can wait for any writeback page */ |
| f2fs_flush_merged_writes(sbi); |
| |
| f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA); |
| |
| if (err || f2fs_cp_error(sbi)) { |
| truncate_inode_pages_final(NODE_MAPPING(sbi)); |
| truncate_inode_pages_final(META_MAPPING(sbi)); |
| } |
| |
| for (i = 0; i < NR_COUNT_TYPE; i++) { |
| if (!get_pages(sbi, i)) |
| continue; |
| f2fs_err(sbi, "detect filesystem reference count leak during " |
| "umount, type: %d, count: %lld", i, get_pages(sbi, i)); |
| f2fs_bug_on(sbi, 1); |
| } |
| |
| f2fs_bug_on(sbi, sbi->fsync_node_num); |
| |
| f2fs_destroy_compress_inode(sbi); |
| |
| iput(sbi->node_inode); |
| sbi->node_inode = NULL; |
| |
| iput(sbi->meta_inode); |
| sbi->meta_inode = NULL; |
| |
| /* |
| * iput() can update stat information, if f2fs_write_checkpoint() |
| * above failed with error. |
| */ |
| f2fs_destroy_stats(sbi); |
| |
| /* destroy f2fs internal modules */ |
| f2fs_destroy_node_manager(sbi); |
| f2fs_destroy_segment_manager(sbi); |
| |
| /* flush s_error_work before sbi destroy */ |
| flush_work(&sbi->s_error_work); |
| |
| f2fs_destroy_post_read_wq(sbi); |
| |
| kvfree(sbi->ckpt); |
| |
| if (sbi->s_chksum_driver) |
| crypto_free_shash(sbi->s_chksum_driver); |
| kfree(sbi->raw_super); |
| |
| f2fs_destroy_page_array_cache(sbi); |
| f2fs_destroy_xattr_caches(sbi); |
| #ifdef CONFIG_QUOTA |
| for (i = 0; i < MAXQUOTAS; i++) |
| kfree(F2FS_OPTION(sbi).s_qf_names[i]); |
| #endif |
| fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy); |
| destroy_percpu_info(sbi); |
| f2fs_destroy_iostat(sbi); |
| for (i = 0; i < NR_PAGE_TYPE; i++) |
| kvfree(sbi->write_io[i]); |
| #if IS_ENABLED(CONFIG_UNICODE) |
| utf8_unload(sb->s_encoding); |
| #endif |
| } |
| |
| int f2fs_sync_fs(struct super_block *sb, int sync) |
| { |
| struct f2fs_sb_info *sbi = F2FS_SB(sb); |
| int err = 0; |
| |
| if (unlikely(f2fs_cp_error(sbi))) |
| return 0; |
| if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) |
| return 0; |
| |
| trace_f2fs_sync_fs(sb, sync); |
| |
| if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) |
| return -EAGAIN; |
| |
| if (sync) { |
| stat_inc_cp_call_count(sbi, TOTAL_CALL); |
| err = f2fs_issue_checkpoint(sbi); |
| } |
| |
| return err; |
| } |
| |
| static int f2fs_freeze(struct super_block *sb) |
| { |
| if (f2fs_readonly(sb)) |
| return 0; |
| |
| /* IO error happened before */ |
| if (unlikely(f2fs_cp_error(F2FS_SB(sb)))) |
| return -EIO; |
| |
| /* must be clean, since sync_filesystem() was already called */ |
| if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY)) |
| return -EINVAL; |
| |
| /* Let's flush checkpoints and stop the thread. */ |
| f2fs_flush_ckpt_thread(F2FS_SB(sb)); |
| |
| /* to avoid deadlock on f2fs_evict_inode->SB_FREEZE_FS */ |
| set_sbi_flag(F2FS_SB(sb), SBI_IS_FREEZING); |
| return 0; |
| } |
| |
| static int f2fs_unfreeze(struct super_block *sb) |
| { |
| clear_sbi_flag(F2FS_SB(sb), SBI_IS_FREEZING); |
| return 0; |
| } |
| |
| #ifdef CONFIG_QUOTA |
| static int f2fs_statfs_project(struct super_block *sb, |
| kprojid_t projid, struct kstatfs *buf) |
| { |
| struct kqid qid; |
| struct dquot *dquot; |
| u64 limit; |
| u64 curblock; |
| |
| qid = make_kqid_projid(projid); |
| dquot = dqget(sb, qid); |
| if (IS_ERR(dquot)) |
| return PTR_ERR(dquot); |
| spin_lock(&dquot->dq_dqb_lock); |
| |
| limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit, |
| dquot->dq_dqb.dqb_bhardlimit); |
| if (limit) |
| limit >>= sb->s_blocksize_bits; |
| |
| if (limit && buf->f_blocks > limit) { |
| curblock = (dquot->dq_dqb.dqb_curspace + |
| dquot->dq_dqb.dqb_rsvspace) >> sb->s_blocksize_bits; |
| buf->f_blocks = limit; |
| buf->f_bfree = buf->f_bavail = |
| (buf->f_blocks > curblock) ? |
| (buf->f_blocks - curblock) : 0; |
| } |
| |
| limit = min_not_zero(dquot->dq_dqb.dqb_isoftlimit, |
| dquot->dq_dqb.dqb_ihardlimit); |
| |
| if (limit && buf->f_files > limit) { |
| buf->f_files = limit; |
| buf->f_ffree = |
| (buf->f_files > dquot->dq_dqb.dqb_curinodes) ? |
| (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0; |
| } |
| |
| spin_unlock(&dquot->dq_dqb_lock); |
| dqput(dquot); |
| return 0; |
| } |
| #endif |
| |
| static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf) |
| { |
| struct super_block *sb = dentry->d_sb; |
| struct f2fs_sb_info *sbi = F2FS_SB(sb); |
| u64 id = huge_encode_dev(sb->s_bdev->bd_dev); |
| block_t total_count, user_block_count, start_count; |
| u64 avail_node_count; |
| unsigned int total_valid_node_count; |
| |
| total_count = le64_to_cpu(sbi->raw_super->block_count); |
| start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr); |
| buf->f_type = F2FS_SUPER_MAGIC; |
| buf->f_bsize = sbi->blocksize; |
| |
| buf->f_blocks = total_count - start_count; |
| |
| spin_lock(&sbi->stat_lock); |
| |
| user_block_count = sbi->user_block_count; |
| total_valid_node_count = valid_node_count(sbi); |
| avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM; |
| buf->f_bfree = user_block_count - valid_user_blocks(sbi) - |
| sbi->current_reserved_blocks; |
| |
| if (unlikely(buf->f_bfree <= sbi->unusable_block_count)) |
| buf->f_bfree = 0; |
| else |
| buf->f_bfree -= sbi->unusable_block_count; |
| spin_unlock(&sbi->stat_lock); |
| |
| if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks) |
| buf->f_bavail = buf->f_bfree - |
| F2FS_OPTION(sbi).root_reserved_blocks; |
| else |
| buf->f_bavail = 0; |
| |
| if (avail_node_count > user_block_count) { |
| buf->f_files = user_block_count; |
| buf->f_ffree = buf->f_bavail; |
| } else { |
| buf->f_files = avail_node_count; |
| buf->f_ffree = min(avail_node_count - total_valid_node_count, |
| buf->f_bavail); |
| } |
| |
| buf->f_namelen = F2FS_NAME_LEN; |
| buf->f_fsid = u64_to_fsid(id); |
| |
| #ifdef CONFIG_QUOTA |
| if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) && |
| sb_has_quota_limits_enabled(sb, PRJQUOTA)) { |
| f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf); |
| } |
| #endif |
| return 0; |
| } |
| |
| static inline void f2fs_show_quota_options(struct seq_file *seq, |
| struct super_block *sb) |
| { |
| #ifdef CONFIG_QUOTA |
| struct f2fs_sb_info *sbi = F2FS_SB(sb); |
| |
| if (F2FS_OPTION(sbi).s_jquota_fmt) { |
| char *fmtname = ""; |
| |
| switch (F2FS_OPTION(sbi).s_jquota_fmt) { |
| case QFMT_VFS_OLD: |
| fmtname = "vfsold"; |
| break; |
| case QFMT_VFS_V0: |
| fmtname = "vfsv0"; |
| break; |
| case QFMT_VFS_V1: |
| fmtname = "vfsv1"; |
| break; |
| } |
| seq_printf(seq, ",jqfmt=%s", fmtname); |
| } |
| |
| if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA]) |
| seq_show_option(seq, "usrjquota", |
| F2FS_OPTION(sbi).s_qf_names[USRQUOTA]); |
| |
| if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]) |
| seq_show_option(seq, "grpjquota", |
| F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]); |
| |
| if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) |
| seq_show_option(seq, "prjjquota", |
| F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]); |
| #endif |
| } |
| |
| #ifdef CONFIG_F2FS_FS_COMPRESSION |
| static inline void f2fs_show_compress_options(struct seq_file *seq, |
| struct super_block *sb) |
| { |
| struct f2fs_sb_info *sbi = F2FS_SB(sb); |
| char *algtype = ""; |
| int i; |
| |
| if (!f2fs_sb_has_compression(sbi)) |
| return; |
| |
| switch (F2FS_OPTION(sbi).compress_algorithm) { |
| case COMPRESS_LZO: |
| algtype = "lzo"; |
| break; |
| case COMPRESS_LZ4: |
| algtype = "lz4"; |
| break; |
| case COMPRESS_ZSTD: |
| algtype = "zstd"; |
| break; |
| case COMPRESS_LZORLE: |
| algtype = "lzo-rle"; |
| break; |
| } |
| seq_printf(seq, ",compress_algorithm=%s", algtype); |
| |
| if (F2FS_OPTION(sbi).compress_level) |
| seq_printf(seq, ":%d", F2FS_OPTION(sbi).compress_level); |
| |
| seq_printf(seq, ",compress_log_size=%u", |
| F2FS_OPTION(sbi).compress_log_size); |
| |
| for (i = 0; i < F2FS_OPTION(sbi).compress_ext_cnt; i++) { |
| seq_printf(seq, ",compress_extension=%s", |
| F2FS_OPTION(sbi).extensions[i]); |
| } |
| |
| for (i = 0; i < F2FS_OPTION(sbi).nocompress_ext_cnt; i++) { |
| seq_printf(seq, ",nocompress_extension=%s", |
| F2FS_OPTION(sbi).noextensions[i]); |
| } |
| |
| if (F2FS_OPTION(sbi).compress_chksum) |
| seq_puts(seq, ",compress_chksum"); |
| |
| if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_FS) |
| seq_printf(seq, ",compress_mode=%s", "fs"); |
| else if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_USER) |
| seq_printf(seq, ",compress_mode=%s", "user"); |
| |
| if (test_opt(sbi, COMPRESS_CACHE)) |
| seq_puts(seq, ",compress_cache"); |
| } |
| #endif |
| |
| static int f2fs_show_options(struct seq_file *seq, struct dentry *root) |
| { |
| struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb); |
| |
| if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_SYNC) |
| seq_printf(seq, ",background_gc=%s", "sync"); |
| else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_ON) |
| seq_printf(seq, ",background_gc=%s", "on"); |
| else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF) |
| seq_printf(seq, ",background_gc=%s", "off"); |
| |
| if (test_opt(sbi, GC_MERGE)) |
| seq_puts(seq, ",gc_merge"); |
| else |
| seq_puts(seq, ",nogc_merge"); |
| |
| if (test_opt(sbi, DISABLE_ROLL_FORWARD)) |
| seq_puts(seq, ",disable_roll_forward"); |
| if (test_opt(sbi, NORECOVERY)) |
| seq_puts(seq, ",norecovery"); |
| if (test_opt(sbi, DISCARD)) { |
| seq_puts(seq, ",discard"); |
| if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_BLOCK) |
| seq_printf(seq, ",discard_unit=%s", "block"); |
| else if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SEGMENT) |
| seq_printf(seq, ",discard_unit=%s", "segment"); |
| else if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SECTION) |
| seq_printf(seq, ",discard_unit=%s", "section"); |
| } else { |
| seq_puts(seq, ",nodiscard"); |
| } |
| #ifdef CONFIG_F2FS_FS_XATTR |
| if (test_opt(sbi, XATTR_USER)) |
| seq_puts(seq, ",user_xattr"); |
| else |
| seq_puts(seq, ",nouser_xattr"); |
| if (test_opt(sbi, INLINE_XATTR)) |
| seq_puts(seq, ",inline_xattr"); |
| else |
| seq_puts(seq, ",noinline_xattr"); |
| if (test_opt(sbi, INLINE_XATTR_SIZE)) |
| seq_printf(seq, ",inline_xattr_size=%u", |
| F2FS_OPTION(sbi).inline_xattr_size); |
| #endif |
| #ifdef CONFIG_F2FS_FS_POSIX_ACL |
| if (test_opt(sbi, POSIX_ACL)) |
| seq_puts(seq, ",acl"); |
| else |
| seq_puts(seq, ",noacl"); |
| #endif |
| if (test_opt(sbi, DISABLE_EXT_IDENTIFY)) |
| seq_puts(seq, ",disable_ext_identify"); |
| if (test_opt(sbi, INLINE_DATA)) |
| seq_puts(seq, ",inline_data"); |
| else |
| seq_puts(seq, ",noinline_data"); |
| if (test_opt(sbi, INLINE_DENTRY)) |
| seq_puts(seq, ",inline_dentry"); |
| else |
| seq_puts(seq, ",noinline_dentry"); |
| if (test_opt(sbi, FLUSH_MERGE)) |
| seq_puts(seq, ",flush_merge"); |
| else |
| seq_puts(seq, ",noflush_merge"); |
| if (test_opt(sbi, NOBARRIER)) |
| seq_puts(seq, ",nobarrier"); |
| else |
| seq_puts(seq, ",barrier"); |
| if (test_opt(sbi, FASTBOOT)) |
| seq_puts(seq, ",fastboot"); |
| if (test_opt(sbi, READ_EXTENT_CACHE)) |
| seq_puts(seq, ",extent_cache"); |
| else |
| seq_puts(seq, ",noextent_cache"); |
| if (test_opt(sbi, AGE_EXTENT_CACHE)) |
| seq_puts(seq, ",age_extent_cache"); |
| if (test_opt(sbi, DATA_FLUSH)) |
| seq_puts(seq, ",data_flush"); |
| |
| seq_puts(seq, ",mode="); |
| if (F2FS_OPTION(sbi).fs_mode == FS_MODE_ADAPTIVE) |
| seq_puts(seq, "adaptive"); |
| else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_LFS) |
| seq_puts(seq, "lfs"); |
| else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_SEG) |
| seq_puts(seq, "fragment:segment"); |
| else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_BLK) |
| seq_puts(seq, "fragment:block"); |
| seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs); |
| if (test_opt(sbi, RESERVE_ROOT)) |
| seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u", |
| F2FS_OPTION(sbi).root_reserved_blocks, |
| from_kuid_munged(&init_user_ns, |
| F2FS_OPTION(sbi).s_resuid), |
| from_kgid_munged(&init_user_ns, |
| F2FS_OPTION(sbi).s_resgid)); |
| #ifdef CONFIG_F2FS_FAULT_INJECTION |
| if (test_opt(sbi, FAULT_INJECTION)) { |
| seq_printf(seq, ",fault_injection=%u", |
| F2FS_OPTION(sbi).fault_info.inject_rate); |
| seq_printf(seq, ",fault_type=%u", |
| F2FS_OPTION(sbi).fault_info.inject_type); |
| } |
| #endif |
| #ifdef CONFIG_QUOTA |
| if (test_opt(sbi, QUOTA)) |
| seq_puts(seq, ",quota"); |
| if (test_opt(sbi, USRQUOTA)) |
| seq_puts(seq, ",usrquota"); |
| if (test_opt(sbi, GRPQUOTA)) |
| seq_puts(seq, ",grpquota"); |
| if (test_opt(sbi, PRJQUOTA)) |
| seq_puts(seq, ",prjquota"); |
| #endif |
| f2fs_show_quota_options(seq, sbi->sb); |
| |
| fscrypt_show_test_dummy_encryption(seq, ',', sbi->sb); |
| |
| if (sbi->sb->s_flags & SB_INLINECRYPT) |
| seq_puts(seq, ",inlinecrypt"); |
| |
| if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT) |
| seq_printf(seq, ",alloc_mode=%s", "default"); |
| else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE) |
| seq_printf(seq, ",alloc_mode=%s", "reuse"); |
| |
| if (test_opt(sbi, DISABLE_CHECKPOINT)) |
| seq_printf(seq, ",checkpoint=disable:%u", |
| F2FS_OPTION(sbi).unusable_cap); |
| if (test_opt(sbi, MERGE_CHECKPOINT)) |
| seq_puts(seq, ",checkpoint_merge"); |
| else |
| seq_puts(seq, ",nocheckpoint_merge"); |
| if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX) |
| seq_printf(seq, ",fsync_mode=%s", "posix"); |
| else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) |
| seq_printf(seq, ",fsync_mode=%s", "strict"); |
| else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER) |
| seq_printf(seq, ",fsync_mode=%s", "nobarrier"); |
| |
| #ifdef CONFIG_F2FS_FS_COMPRESSION |
| f2fs_show_compress_options(seq, sbi->sb); |
| #endif |
| |
| if (test_opt(sbi, ATGC)) |
| seq_puts(seq, ",atgc"); |
| |
| if (F2FS_OPTION(sbi).memory_mode == MEMORY_MODE_NORMAL) |
| seq_printf(seq, ",memory=%s", "normal"); |
| else if (F2FS_OPTION(sbi).memory_mode == MEMORY_MODE_LOW) |
| seq_printf(seq, ",memory=%s", "low"); |
| |
| if (F2FS_OPTION(sbi).errors == MOUNT_ERRORS_READONLY) |
| seq_printf(seq, ",errors=%s", "remount-ro"); |
| else if (F2FS_OPTION(sbi).errors == MOUNT_ERRORS_CONTINUE) |
| seq_printf(seq, ",errors=%s", "continue"); |
| else if (F2FS_OPTION(sbi).errors == MOUNT_ERRORS_PANIC) |
| seq_printf(seq, ",errors=%s", "panic"); |
| |
| return 0; |
| } |
| |
| static void default_options(struct f2fs_sb_info *sbi, bool remount) |
| { |
| /* init some FS parameters */ |
| if (!remount) { |
| set_opt(sbi, READ_EXTENT_CACHE); |
| clear_opt(sbi, DISABLE_CHECKPOINT); |
| |
| if (f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) |
| set_opt(sbi, DISCARD); |
| |
| if (f2fs_sb_has_blkzoned(sbi)) |
| F2FS_OPTION(sbi).discard_unit = DISCARD_UNIT_SECTION; |
| else |
| F2FS_OPTION(sbi).discard_unit = DISCARD_UNIT_BLOCK; |
| } |
| |
| if (f2fs_sb_has_readonly(sbi)) |
| F2FS_OPTION(sbi).active_logs = NR_CURSEG_RO_TYPE; |
| else |
| F2FS_OPTION(sbi).active_logs = NR_CURSEG_PERSIST_TYPE; |
| |
| F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS; |
| if (le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_main) <= |
| SMALL_VOLUME_SEGMENTS) |
| F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE; |
| else |
| F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT; |
| F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX; |
| F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID); |
| F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID); |
| if (f2fs_sb_has_compression(sbi)) { |
| F2FS_OPTION(sbi).compress_algorithm = COMPRESS_LZ4; |
| F2FS_OPTION(sbi).compress_log_size = MIN_COMPRESS_LOG_SIZE; |
| F2FS_OPTION(sbi).compress_ext_cnt = 0; |
| F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS; |
| } |
| F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON; |
| F2FS_OPTION(sbi).memory_mode = MEMORY_MODE_NORMAL; |
| F2FS_OPTION(sbi).errors = MOUNT_ERRORS_CONTINUE; |
| |
| set_opt(sbi, INLINE_XATTR); |
| set_opt(sbi, INLINE_DATA); |
| set_opt(sbi, INLINE_DENTRY); |
| set_opt(sbi, MERGE_CHECKPOINT); |
| F2FS_OPTION(sbi).unusable_cap = 0; |
| sbi->sb->s_flags |= SB_LAZYTIME; |
| if (!f2fs_is_readonly(sbi)) |
| set_opt(sbi, FLUSH_MERGE); |
| if (f2fs_sb_has_blkzoned(sbi)) |
| F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS; |
| else |
| F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE; |
| |
| #ifdef CONFIG_F2FS_FS_XATTR |
| set_opt(sbi, XATTR_USER); |
| #endif |
| #ifdef CONFIG_F2FS_FS_POSIX_ACL |
| set_opt(sbi, POSIX_ACL); |
| #endif |
| |
| f2fs_build_fault_attr(sbi, 0, 0); |
| } |
| |
| #ifdef CONFIG_QUOTA |
| static int f2fs_enable_quotas(struct super_block *sb); |
| #endif |
| |
| static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi) |
| { |
| unsigned int s_flags = sbi->sb->s_flags; |
| struct cp_control cpc; |
| unsigned int gc_mode = sbi->gc_mode; |
| int err = 0; |
| int ret; |
| block_t unusable; |
| |
| if (s_flags & SB_RDONLY) { |
| f2fs_err(sbi, "checkpoint=disable on readonly fs"); |
| return -EINVAL; |
| } |
| sbi->sb->s_flags |= SB_ACTIVE; |
| |
| /* check if we need more GC first */ |
| unusable = f2fs_get_unusable_blocks(sbi); |
| if (!f2fs_disable_cp_again(sbi, unusable)) |
| goto skip_gc; |
| |
| f2fs_update_time(sbi, DISABLE_TIME); |
| |
| sbi->gc_mode = GC_URGENT_HIGH; |
| |
| while (!f2fs_time_over(sbi, DISABLE_TIME)) { |
| struct f2fs_gc_control gc_control = { |
| .victim_segno = NULL_SEGNO, |
| .init_gc_type = FG_GC, |
| .should_migrate_blocks = false, |
| .err_gc_skipped = true, |
| .no_bg_gc = true, |
| .nr_free_secs = 1 }; |
| |
| f2fs_down_write(&sbi->gc_lock); |
| stat_inc_gc_call_count(sbi, FOREGROUND); |
| err = f2fs_gc(sbi, &gc_control); |
| if (err == -ENODATA) { |
| err = 0; |
| break; |
| } |
| if (err && err != -EAGAIN) |
| break; |
| } |
| |
| ret = sync_filesystem(sbi->sb); |
| if (ret || err) { |
| err = ret ? ret : err; |
| goto restore_flag; |
| } |
| |
| unusable = f2fs_get_unusable_blocks(sbi); |
| if (f2fs_disable_cp_again(sbi, unusable)) { |
| err = -EAGAIN; |
| goto restore_flag; |
| } |
| |
| skip_gc: |
| f2fs_down_write(&sbi->gc_lock); |
| cpc.reason = CP_PAUSE; |
| set_sbi_flag(sbi, SBI_CP_DISABLED); |
| stat_inc_cp_call_count(sbi, TOTAL_CALL); |
| err = f2fs_write_checkpoint(sbi, &cpc); |
| if (err) |
| goto out_unlock; |
| |
| spin_lock(&sbi->stat_lock); |
| sbi->unusable_block_count = unusable; |
| spin_unlock(&sbi->stat_lock); |
| |
| out_unlock: |
| f2fs_up_write(&sbi->gc_lock); |
| restore_flag: |
| sbi->gc_mode = gc_mode; |
| sbi->sb->s_flags = s_flags; /* Restore SB_RDONLY status */ |
| return err; |
| } |
| |
| static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi) |
| { |
| int retry = DEFAULT_RETRY_IO_COUNT; |
| |
| /* we should flush all the data to keep data consistency */ |
| do { |
| sync_inodes_sb(sbi->sb); |
| f2fs_io_schedule_timeout(DEFAULT_IO_TIMEOUT); |
| } while (get_pages(sbi, F2FS_DIRTY_DATA) && retry--); |
| |
| if (unlikely(retry < 0)) |
| f2fs_warn(sbi, "checkpoint=enable has some unwritten data."); |
| |
| f2fs_down_write(&sbi->gc_lock); |
| f2fs_dirty_to_prefree(sbi); |
| |
| clear_sbi_flag(sbi, SBI_CP_DISABLED); |
| set_sbi_flag(sbi, SBI_IS_DIRTY); |
| f2fs_up_write(&sbi->gc_lock); |
| |
| f2fs_sync_fs(sbi->sb, 1); |
| |
| /* Let's ensure there's no pending checkpoint anymore */ |
| f2fs_flush_ckpt_thread(sbi); |
| } |
| |
| static int f2fs_remount(struct super_block *sb, int *flags, char *data) |
| { |
| struct f2fs_sb_info *sbi = F2FS_SB(sb); |
| struct f2fs_mount_info org_mount_opt; |
| unsigned long old_sb_flags; |
| int err; |
| bool need_restart_gc = false, need_stop_gc = false; |
| bool need_restart_flush = false, need_stop_flush = false; |
| bool need_restart_discard = false, need_stop_discard = false; |
| bool need_enable_checkpoint = false, need_disable_checkpoint = false; |
| bool no_read_extent_cache = !test_opt(sbi, READ_EXTENT_CACHE); |
| bool no_age_extent_cache = !test_opt(sbi, AGE_EXTENT_CACHE); |
| bool enable_checkpoint = !test_opt(sbi, DISABLE_CHECKPOINT); |
| bool no_atgc = !test_opt(sbi, ATGC); |
| bool no_discard = !test_opt(sbi, DISCARD); |
| bool no_compress_cache = !test_opt(sbi, COMPRESS_CACHE); |
| bool block_unit_discard = f2fs_block_unit_discard(sbi); |
| #ifdef CONFIG_QUOTA |
| int i, j; |
| #endif |
| |
| /* |
| * Save the old mount options in case we |
| * need to restore them. |
| */ |
| org_mount_opt = sbi->mount_opt; |
| old_sb_flags = sb->s_flags; |
| |
| #ifdef CONFIG_QUOTA |
| org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt; |
| for (i = 0; i < MAXQUOTAS; i++) { |
| if (F2FS_OPTION(sbi).s_qf_names[i]) { |
| org_mount_opt.s_qf_names[i] = |
| kstrdup(F2FS_OPTION(sbi).s_qf_names[i], |
| GFP_KERNEL); |
| if (!org_mount_opt.s_qf_names[i]) { |
| for (j = 0; j < i; j++) |
| kfree(org_mount_opt.s_qf_names[j]); |
| return -ENOMEM; |
| } |
| } else { |
| org_mount_opt.s_qf_names[i] = NULL; |
| } |
| } |
| #endif |
| |
| /* recover superblocks we couldn't write due to previous RO mount */ |
| if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) { |
| err = f2fs_commit_super(sbi, false); |
| f2fs_info(sbi, "Try to recover all the superblocks, ret: %d", |
| err); |
| if (!err) |
| clear_sbi_flag(sbi, SBI_NEED_SB_WRITE); |
| } |
| |
| default_options(sbi, true); |
| |
| /* parse mount options */ |
| err = parse_options(sb, data, true); |
| if (err) |
| goto restore_opts; |
| |
| #ifdef CONFIG_BLK_DEV_ZONED |
| if (f2fs_sb_has_blkzoned(sbi) && |
| sbi->max_open_zones < F2FS_OPTION(sbi).active_logs) { |
| f2fs_err(sbi, |
| "zoned: max open zones %u is too small, need at least %u open zones", |
| sbi->max_open_zones, F2FS_OPTION(sbi).active_logs); |
| err = -EINVAL; |
| goto restore_opts; |
| } |
| #endif |
| |
| /* flush outstanding errors before changing fs state */ |
| flush_work(&sbi->s_error_work); |
| |
| /* |
| * Previous and new state of filesystem is RO, |
| * so skip checking GC and FLUSH_MERGE conditions. |
| */ |
| if (f2fs_readonly(sb) && (*flags & SB_RDONLY)) |
| goto skip; |
| |
| if (f2fs_dev_is_readonly(sbi) && !(*flags & SB_RDONLY)) { |
| err = -EROFS; |
| goto restore_opts; |
| } |
| |
| #ifdef CONFIG_QUOTA |
| if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) { |
| err = dquot_suspend(sb, -1); |
| if (err < 0) |
| goto restore_opts; |
| } else if (f2fs_readonly(sb) && !(*flags & SB_RDONLY)) { |
| /* dquot_resume needs RW */ |
| sb->s_flags &= ~SB_RDONLY; |
| if (sb_any_quota_suspended(sb)) { |
| dquot_resume(sb, -1); |
| } else if (f2fs_sb_has_quota_ino(sbi)) { |
| err = f2fs_enable_quotas(sb); |
| if (err) |
| goto restore_opts; |
| } |
| } |
| #endif |
| if (f2fs_lfs_mode(sbi) && !IS_F2FS_IPU_DISABLE(sbi)) { |
| err = -EINVAL; |
| f2fs_warn(sbi, "LFS is not compatible with IPU"); |
| goto restore_opts; |
| } |
| |
| /* disallow enable atgc dynamically */ |
| if (no_atgc == !!test_opt(sbi, ATGC)) { |
| err = -EINVAL; |
| f2fs_warn(sbi, "switch atgc option is not allowed"); |
| goto restore_opts; |
| } |
| |
| /* disallow enable/disable extent_cache dynamically */ |
| if (no_read_extent_cache == !!test_opt(sbi, READ_EXTENT_CACHE)) { |
| err = -EINVAL; |
| f2fs_warn(sbi, "switch extent_cache option is not allowed"); |
| goto restore_opts; |
| } |
| /* disallow enable/disable age extent_cache dynamically */ |
| if (no_age_extent_cache == !!test_opt(sbi, AGE_EXTENT_CACHE)) { |
| err = -EINVAL; |
| f2fs_warn(sbi, "switch age_extent_cache option is not allowed"); |
| goto restore_opts; |
| } |
| |
| if (no_compress_cache == !!test_opt(sbi, COMPRESS_CACHE)) { |
| err = -EINVAL; |
| f2fs_warn(sbi, "switch compress_cache option is not allowed"); |
| goto restore_opts; |
| } |
| |
| if (block_unit_discard != f2fs_block_unit_discard(sbi)) { |
| err = -EINVAL; |
| f2fs_warn(sbi, "switch discard_unit option is not allowed"); |
| goto restore_opts; |
| } |
| |
| if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) { |
| err = -EINVAL; |
| f2fs_warn(sbi, "disabling checkpoint not compatible with read-only"); |
| goto restore_opts; |
| } |
| |
| /* |
| * We stop the GC thread if FS is mounted as RO |
| * or if background_gc = off is passed in mount |
| * option. Also sync the filesystem. |
| */ |
| if ((*flags & SB_RDONLY) || |
| (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF && |
| !test_opt(sbi, GC_MERGE))) { |
| if (sbi->gc_thread) { |
| f2fs_stop_gc_thread(sbi); |
| need_restart_gc = true; |
| } |
| } else if (!sbi->gc_thread) { |
| err = f2fs_start_gc_thread(sbi); |
| if (err) |
| goto restore_opts; |
| need_stop_gc = true; |
| } |
| |
| if (*flags & SB_RDONLY) { |
| sync_inodes_sb(sb); |
| |
| set_sbi_flag(sbi, SBI_IS_DIRTY); |
| set_sbi_flag(sbi, SBI_IS_CLOSE); |
| f2fs_sync_fs(sb, 1); |
| clear_sbi_flag(sbi, SBI_IS_CLOSE); |
| } |
| |
| /* |
| * We stop issue flush thread if FS is mounted as RO |
| * or if flush_merge is not passed in mount option. |
| */ |
| if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) { |
| clear_opt(sbi, FLUSH_MERGE); |
| f2fs_destroy_flush_cmd_control(sbi, false); |
| need_restart_flush = true; |
| } else { |
| err = f2fs_create_flush_cmd_control(sbi); |
| if (err) |
| goto restore_gc; |
| need_stop_flush = true; |
| } |
| |
| if (no_discard == !!test_opt(sbi, DISCARD)) { |
| if (test_opt(sbi, DISCARD)) { |
| err = f2fs_start_discard_thread(sbi); |
| if (err) |
| goto restore_flush; |
| need_stop_discard = true; |
| } else { |
| f2fs_stop_discard_thread(sbi); |
| f2fs_issue_discard_timeout(sbi); |
| need_restart_discard = true; |
| } |
| } |
| |
| if (enable_checkpoint == !!test_opt(sbi, DISABLE_CHECKPOINT)) { |
| if (test_opt(sbi, DISABLE_CHECKPOINT)) { |
| err = f2fs_disable_checkpoint(sbi); |
| if (err) |
| goto restore_discard; |
| need_enable_checkpoint = true; |
| } else { |
| f2fs_enable_checkpoint(sbi); |
| need_disable_checkpoint = true; |
| } |
| } |
| |
| /* |
| * Place this routine at the end, since a new checkpoint would be |
| * triggered while remount and we need to take care of it before |
| * returning from remount. |
| */ |
| if ((*flags & SB_RDONLY) || test_opt(sbi, DISABLE_CHECKPOINT) || |
| !test_opt(sbi, MERGE_CHECKPOINT)) { |
| f2fs_stop_ckpt_thread(sbi); |
| } else { |
| /* Flush if the prevous checkpoint, if exists. */ |
| f2fs_flush_ckpt_thread(sbi); |
| |
| err = f2fs_start_ckpt_thread(sbi); |
| if (err) { |
| f2fs_err(sbi, |
| "Failed to start F2FS issue_checkpoint_thread (%d)", |
| err); |
| goto restore_checkpoint; |
| } |
| } |
| |
| skip: |
| #ifdef CONFIG_QUOTA |
| /* Release old quota file names */ |
| for (i = 0; i < MAXQUOTAS; i++) |
| kfree(org_mount_opt.s_qf_names[i]); |
| #endif |
| /* Update the POSIXACL Flag */ |
| sb->s_flags = (sb->s_flags & ~SB_POSIXACL) | |
| (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0); |
| |
| limit_reserve_root(sbi); |
| adjust_unusable_cap_perc(sbi); |
| *flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME); |
| return 0; |
| restore_checkpoint: |
| if (need_enable_checkpoint) { |
| f2fs_enable_checkpoint(sbi); |
| } else if (need_disable_checkpoint) { |
| if (f2fs_disable_checkpoint(sbi)) |
| f2fs_warn(sbi, "checkpoint has not been disabled"); |
| } |
| restore_discard: |
| if (need_restart_discard) { |
| if (f2fs_start_discard_thread(sbi)) |
| f2fs_warn(sbi, "discard has been stopped"); |
| } else if (need_stop_discard) { |
| f2fs_stop_discard_thread(sbi); |
| } |
| restore_flush: |
| if (need_restart_flush) { |
| if (f2fs_create_flush_cmd_control(sbi)) |
| f2fs_warn(sbi, "background flush thread has stopped"); |
| } else if (need_stop_flush) { |
| clear_opt(sbi, FLUSH_MERGE); |
| f2fs_destroy_flush_cmd_control(sbi, false); |
| } |
| restore_gc: |
| if (need_restart_gc) { |
| if (f2fs_start_gc_thread(sbi)) |
| f2fs_warn(sbi, "background gc thread has stopped"); |
| } else if (need_stop_gc) { |
| f2fs_stop_gc_thread(sbi); |
| } |
| restore_opts: |
| #ifdef CONFIG_QUOTA |
| F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt; |
| for (i = 0; i < MAXQUOTAS; i++) { |
| kfree(F2FS_OPTION(sbi).s_qf_names[i]); |
| F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i]; |
| } |
| #endif |
| sbi->mount_opt = org_mount_opt; |
| sb->s_flags = old_sb_flags; |
| return err; |
| } |
| |
| static void f2fs_shutdown(struct super_block *sb) |
| { |
| f2fs_do_shutdown(F2FS_SB(sb), F2FS_GOING_DOWN_NOSYNC, false); |
| } |
| |
| #ifdef CONFIG_QUOTA |
| static bool f2fs_need_recovery(struct f2fs_sb_info *sbi) |
| { |
| /* need to recovery orphan */ |
| if (is_set_ckpt_flags(sbi, CP_ORPHAN_PRESENT_FLAG)) |
| return true; |
| /* need to recovery data */ |
| if (test_opt(sbi, DISABLE_ROLL_FORWARD)) |
| return false; |
| if (test_opt(sbi, NORECOVERY)) |
| return false; |
| return !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG); |
| } |
| |
| static bool f2fs_recover_quota_begin(struct f2fs_sb_info *sbi) |
| { |
| bool readonly = f2fs_readonly(sbi->sb); |
| |
| if (!f2fs_need_recovery(sbi)) |
| return false; |
| |
| /* it doesn't need to check f2fs_sb_has_readonly() */ |
| if (f2fs_hw_is_readonly(sbi)) |
| return false; |
| |
| if (readonly) { |
| sbi->sb->s_flags &= ~SB_RDONLY; |
| set_sbi_flag(sbi, SBI_IS_WRITABLE); |
| } |
| |
| /* |
| * Turn on quotas which were not enabled for read-only mounts if |
| * filesystem has quota feature, so that they are updated correctly. |
| */ |
| return f2fs_enable_quota_files(sbi, readonly); |
| } |
| |
| static void f2fs_recover_quota_end(struct f2fs_sb_info *sbi, |
| bool quota_enabled) |
| { |
| if (quota_enabled) |
| f2fs_quota_off_umount(sbi->sb); |
| |
| if (is_sbi_flag_set(sbi, SBI_IS_WRITABLE)) { |
| clear_sbi_flag(sbi, SBI_IS_WRITABLE); |
| sbi->sb->s_flags |= SB_RDONLY; |
| } |
| } |
| |
| /* Read data from quotafile */ |
| static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data, |
| size_t len, loff_t off) |
| { |
| struct inode *inode = sb_dqopt(sb)->files[type]; |
| struct address_space *mapping = inode->i_mapping; |
| block_t blkidx = F2FS_BYTES_TO_BLK(off); |
| int offset = off & (sb->s_blocksize - 1); |
| int tocopy; |
| size_t toread; |
| loff_t i_size = i_size_read(inode); |
| struct page *page; |
| |
| if (off > i_size) |
| return 0; |
| |
| if (off + len > i_size) |
| len = i_size - off; |
| toread = len; |
| while (toread > 0) { |
| tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread); |
| repeat: |
| page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS); |
| if (IS_ERR(page)) { |
| if (PTR_ERR(page) == -ENOMEM) { |
| memalloc_retry_wait(GFP_NOFS); |
| goto repeat; |
| } |
| set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); |
| return PTR_ERR(page); |
| } |
| |
| lock_page(page); |
| |
| if (unlikely(page->mapping != mapping)) { |
| f2fs_put_page(page, 1); |
| goto repeat; |
| } |
| if (unlikely(!PageUptodate(page))) { |
| f2fs_put_page(page, 1); |
| set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); |
| return -EIO; |
| } |
| |
| memcpy_from_page(data, page, offset, tocopy); |
| f2fs_put_page(page, 1); |
| |
| offset = 0; |
| toread -= tocopy; |
| data += tocopy; |
| blkidx++; |
| } |
| return len; |
| } |
| |
| /* Write to quotafile */ |
| static ssize_t f2fs_quota_write(struct super_block *sb, int type, |
| const char *data, size_t len, loff_t off) |
| { |
| struct inode *inode = sb_dqopt(sb)->files[type]; |
| struct address_space *mapping = inode->i_mapping; |
| const struct address_space_operations *a_ops = mapping->a_ops; |
| int offset = off & (sb->s_blocksize - 1); |
| size_t towrite = len; |
| struct page *page; |
| void *fsdata = NULL; |
| int err = 0; |
| int tocopy; |
| |
| while (towrite > 0) { |
| tocopy = min_t(unsigned long, sb->s_blocksize - offset, |
| towrite); |
| retry: |
| err = a_ops->write_begin(NULL, mapping, off, tocopy, |
| &page, &fsdata); |
| if (unlikely(err)) { |
| if (err == -ENOMEM) { |
| f2fs_io_schedule_timeout(DEFAULT_IO_TIMEOUT); |
| goto retry; |
| } |
| set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); |
| break; |
| } |
| |
| memcpy_to_page(page, offset, data, tocopy); |
| |
| a_ops->write_end(NULL, mapping, off, tocopy, tocopy, |
| page, fsdata); |
| offset = 0; |
| towrite -= tocopy; |
| off += tocopy; |
| data += tocopy; |
| cond_resched(); |
| } |
| |
| if (len == towrite) |
| return err; |
| inode_set_mtime_to_ts(inode, inode_set_ctime_current(inode)); |
| f2fs_mark_inode_dirty_sync(inode, false); |
| return len - towrite; |
| } |
| |
| int f2fs_dquot_initialize(struct inode *inode) |
| { |
| if (time_to_inject(F2FS_I_SB(inode), FAULT_DQUOT_INIT)) |
| return -ESRCH; |
| |
| return dquot_initialize(inode); |
| } |
| |
| static struct dquot __rcu **f2fs_get_dquots(struct inode *inode) |
| { |
| return F2FS_I(inode)->i_dquot; |
| } |
| |
| static qsize_t *f2fs_get_reserved_space(struct inode *inode) |
| { |
| return &F2FS_I(inode)->i_reserved_quota; |
| } |
| |
| static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type) |
| { |
| if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) { |
| f2fs_err(sbi, "quota sysfile may be corrupted, skip loading it"); |
| return 0; |
| } |
| |
| return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type], |
| F2FS_OPTION(sbi).s_jquota_fmt, type); |
| } |
| |
| int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly) |
| { |
| int enabled = 0; |
| int i, err; |
| |
| if (f2fs_sb_has_quota_ino(sbi) && rdonly) { |
| err = f2fs_enable_quotas(sbi->sb); |
| if (err) { |
| f2fs_err(sbi, "Cannot turn on quota_ino: %d", err); |
| return 0; |
| } |
| return 1; |
| } |
| |
| for (i = 0; i < MAXQUOTAS; i++) { |
| if (F2FS_OPTION(sbi).s_qf_names[i]) { |
| err = f2fs_quota_on_mount(sbi, i); |
| if (!err) { |
| enabled = 1; |
| continue; |
| } |
| f2fs_err(sbi, "Cannot turn on quotas: %d on %d", |
| err, i); |
| } |
| } |
| return enabled; |
| } |
| |
| static int f2fs_quota_enable(struct super_block *sb, int type, int format_id, |
| unsigned int flags) |
| { |
| struct inode *qf_inode; |
| unsigned long qf_inum; |
| unsigned long qf_flag = F2FS_QUOTA_DEFAULT_FL; |
| int err; |
| |
| BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb))); |
| |
| qf_inum = f2fs_qf_ino(sb, type); |
| if (!qf_inum) |
| return -EPERM; |
| |
| qf_inode = f2fs_iget(sb, qf_inum); |
| if (IS_ERR(qf_inode)) { |
| f2fs_err(F2FS_SB(sb), "Bad quota inode %u:%lu", type, qf_inum); |
| return PTR_ERR(qf_inode); |
| } |
| |
| /* Don't account quota for quota files to avoid recursion */ |
| inode_lock(qf_inode); |
| qf_inode->i_flags |= S_NOQUOTA; |
| |
| if ((F2FS_I(qf_inode)->i_flags & qf_flag) != qf_flag) { |
| F2FS_I(qf_inode)->i_flags |= qf_flag; |
| f2fs_set_inode_flags(qf_inode); |
| } |
| inode_unlock(qf_inode); |
| |
| err = dquot_load_quota_inode(qf_inode, type, format_id, flags); |
| iput(qf_inode); |
| return err; |
| } |
| |
| static int f2fs_enable_quotas(struct super_block *sb) |
| { |
| struct f2fs_sb_info *sbi = F2FS_SB(sb); |
| int type, err = 0; |
| unsigned long qf_inum; |
| bool quota_mopt[MAXQUOTAS] = { |
| test_opt(sbi, USRQUOTA), |
| test_opt(sbi, GRPQUOTA), |
| test_opt(sbi, PRJQUOTA), |
| }; |
| |
| if (is_set_ckpt_flags(F2FS_SB(sb), CP_QUOTA_NEED_FSCK_FLAG)) { |
| f2fs_err(sbi, "quota file may be corrupted, skip loading it"); |
| return 0; |
| } |
| |
| sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE; |
| |
| for (type = 0; type < MAXQUOTAS; type++) { |
| qf_inum = f2fs_qf_ino(sb, type); |
| if (qf_inum) { |
| err = f2fs_quota_enable(sb, type, QFMT_VFS_V1, |
| DQUOT_USAGE_ENABLED | |
| (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0)); |
| if (err) { |
| f2fs_err(sbi, "Failed to enable quota tracking (type=%d, err=%d). Please run fsck to fix.", |
| type, err); |
| for (type--; type >= 0; type--) |
| dquot_quota_off(sb, type); |
| set_sbi_flag(F2FS_SB(sb), |
| SBI_QUOTA_NEED_REPAIR); |
| return err; |
| } |
| } |
| } |
| return 0; |
| } |
| |
| static int f2fs_quota_sync_file(struct f2fs_sb_info *sbi, int type) |
| { |
| struct quota_info *dqopt = sb_dqopt(sbi->sb); |
| struct address_space *mapping = dqopt->files[type]->i_mapping; |
| int ret = 0; |
| |
| ret = dquot_writeback_dquots(sbi->sb, type); |
| if (ret) |
| goto out; |
| |
| ret = filemap_fdatawrite(mapping); |
| if (ret) |
| goto out; |
| |
| /* if we are using journalled quota */ |
| if (is_journalled_quota(sbi)) |
| goto out; |
| |
| ret = filemap_fdatawait(mapping); |
| |
| truncate_inode_pages(&dqopt->files[type]->i_data, 0); |
| out: |
| if (ret) |
| set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); |
| return ret; |
| } |
| |
| int f2fs_quota_sync(struct super_block *sb, int type) |
| { |
| struct f2fs_sb_info *sbi = F2FS_SB(sb); |
| struct quota_info *dqopt = sb_dqopt(sb); |
| int cnt; |
| int ret = 0; |
| |
| /* |
| * Now when everything is written we can discard the pagecache so |
| * that userspace sees the changes. |
| */ |
| for (cnt = 0; cnt < MAXQUOTAS; cnt++) { |
| |
| if (type != -1 && cnt != type) |
| continue; |
| |
| if (!sb_has_quota_active(sb, cnt)) |
| continue; |
| |
| if (!f2fs_sb_has_quota_ino(sbi)) |
| inode_lock(dqopt->files[cnt]); |
| |
| /* |
| * do_quotactl |
| * f2fs_quota_sync |
| * f2fs_down_read(quota_sem) |
| * dquot_writeback_dquots() |
| * f2fs_dquot_commit |
| * block_operation |
| * f2fs_down_read(quota_sem) |
| */ |
| f2fs_lock_op(sbi); |
| f2fs_down_read(&sbi->quota_sem); |
| |
| ret = f2fs_quota_sync_file(sbi, cnt); |
| |
| f2fs_up_read(&sbi->quota_sem); |
| f2fs_unlock_op(sbi); |
| |
| if (!f2fs_sb_has_quota_ino(sbi)) |
| inode_unlock(dqopt->files[cnt]); |
| |
| if (ret) |
| break; |
| } |
| return ret; |
| } |
| |
| static int f2fs_quota_on(struct super_block *sb, int type, int format_id, |
| const struct path *path) |
| { |
| struct inode *inode; |
| int err; |
| |
| /* if quota sysfile exists, deny enabling quota with specific file */ |
| if (f2fs_sb_has_quota_ino(F2FS_SB(sb))) { |
| f2fs_err(F2FS_SB(sb), "quota sysfile already exists"); |
| return -EBUSY; |
| } |
| |
| if (path->dentry->d_sb != sb) |
| return -EXDEV; |
| |
| err = f2fs_quota_sync(sb, type); |
| if (err) |
| return err; |
| |
| inode = d_inode(path->dentry); |
| |
| err = filemap_fdatawrite(inode->i_mapping); |
| if (err) |
| return err; |
| |
| err = filemap_fdatawait(inode->i_mapping); |
| if (err) |
| return err; |
| |
| err = dquot_quota_on(sb, type, format_id, path); |
| if (err) |
| return err; |
| |
| inode_lock(inode); |
| F2FS_I(inode)->i_flags |= F2FS_QUOTA_DEFAULT_FL; |
| f2fs_set_inode_flags(inode); |
| inode_unlock(inode); |
| f2fs_mark_inode_dirty_sync(inode, false); |
| |
| return 0; |
| } |
| |
| static int __f2fs_quota_off(struct super_block *sb, int type) |
| { |
| struct inode *inode = sb_dqopt(sb)->files[type]; |
| int err; |
| |
| if (!inode || !igrab(inode)) |
| return dquot_quota_off(sb, type); |
| |
| err = f2fs_quota_sync(sb, type); |
| if (err) |
| goto out_put; |
| |
| err = dquot_quota_off(sb, type); |
| if (err || f2fs_sb_has_quota_ino(F2FS_SB(sb))) |
| goto out_put; |
| |
| inode_lock(inode); |
| F2FS_I(inode)->i_flags &= ~F2FS_QUOTA_DEFAULT_FL; |
| f2fs_set_inode_flags(inode); |
| inode_unlock(inode); |
|