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linux / linux / kernel / git / gregkh / tty / refs/tags/v5.15-rc3 / . / fs / f2fs / super.c
blob: 78ebc306ee2b544f159c5d7e872388930c8f35f5 [file] [log] [blame]
// 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/statfs.h>
#include <linux/buffer_head.h>
#include <linux/backing-dev.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",
};
void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate,
unsigned int type)
{
struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info;
if (rate) {
atomic_set(&ffi->inject_ops, 0);
ffi->inject_rate = rate;
}
if (type)
ffi->inject_type = type;
if (!rate && !type)
memset(ffi, 0, sizeof(struct f2fs_fault_info));
}
#endif
/* f2fs-wide shrinker description */
static struct shrinker f2fs_shrinker_info = {
.scan_objects = f2fs_shrink_scan,
.count_objects = f2fs_shrink_count,
.seeks = DEFAULT_SEEKS,
};
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_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_io_size_bits,
Opt_fault_injection,
Opt_fault_type,
Opt_lazytime,
Opt_nolazytime,
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_whint,
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_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_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_io_size_bits, "io_bits=%u"},
{Opt_fault_injection, "fault_injection=%u"},
{Opt_fault_type, "fault_type=%u"},
{Opt_lazytime, "lazytime"},
{Opt_nolazytime, "nolazytime"},
{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_whint, "whint_mode=%s"},
{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_err, NULL},
};
void f2fs_printk(struct f2fs_sb_info *sbi, 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;
printk("%c%cF2FS-fs (%s): %pV\n",
KERN_SOH_ASCII, level, sbi->sb->s_id, &vaf);
va_end(args);
}
#ifdef CONFIG_UNICODE
static const struct f2fs_sb_encodings {
__u16 magic;
char *name;
char *version;
} f2fs_sb_encoding_map[] = {
{F2FS_ENC_UTF8_12_1, "utf8", "12.1.0"},
};
static int f2fs_sb_read_encoding(const struct f2fs_super_block *sb,
const struct f2fs_sb_encodings **encoding,
__u16 *flags)
{
__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)
break;
if (i >= ARRAY_SIZE(f2fs_sb_encoding_map))
return -EINVAL;
*encoding = &f2fs_sb_encoding_map[i];
*flags = le16_to_cpu(sb->s_encoding_flags);
return 0;
}
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);
if (!f2fs_cf_name_slab)
return -ENOMEM;
return 0;
}
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 << 1) / 1000,
sbi->user_block_count - sbi->reserved_blocks);
/* limit is 0.2% */
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);
#ifdef CONFIG_FS_ENCRYPTION
int err;
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 && !F2FS_OPTION(sbi).dummy_enc_policy.policy) {
f2fs_warn(sbi, "Can't set test_dummy_encryption on remount");
return -EINVAL;
}
err = fscrypt_set_test_dummy_encryption(
sb, arg->from, &F2FS_OPTION(sbi).dummy_enc_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");
#else
f2fs_warn(sbi, "Test dummy encryption mount option ignored");
#endif
return 0;
}
#ifdef CONFIG_F2FS_FS_COMPRESSION
/*
* 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;
#endif
if (strlen(str) == 3) {
F2FS_OPTION(sbi).compress_level = 0;
return 0;
}
#ifdef CONFIG_F2FS_FS_LZ4HC
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 (level < LZ4HC_MIN_CLEVEL || level > LZ4HC_MAX_CLEVEL) {
f2fs_info(sbi, "invalid lz4hc compress level: %d", level);
return -EINVAL;
}
F2FS_OPTION(sbi).compress_level = level;
return 0;
#else
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)
{
unsigned int level;
int len = 4;
if (strlen(str) == len) {
F2FS_OPTION(sbi).compress_level = 0;
return 0;
}
str += len;
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 (!level || level > ZSTD_maxCLevel()) {
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:
set_opt(sbi, NOHEAP);
break;
case Opt_heap:
clear_opt(sbi, NOHEAP);
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_fastboot:
set_opt(sbi, FASTBOOT);
break;
case Opt_extent_cache:
set_opt(sbi, EXTENT_CACHE);
break;
case Opt_noextent_cache:
clear_opt(sbi, 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")) {
if (f2fs_sb_has_blkzoned(sbi)) {
f2fs_warn(sbi, "adaptive mode is not allowed with zoned block device feature");
kfree(name);
return -EINVAL;
}
F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE;
} else if (!strcmp(name, "lfs")) {
F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS;
} else {
kfree(name);
return -EINVAL;
}
kfree(name);
break;
case Opt_io_size_bits:
if (args->from && match_int(args, &arg))
return -EINVAL;
if (arg <= 0 || arg > __ilog2_u32(BIO_MAX_VECS)) {
f2fs_warn(sbi, "Not support %d, larger than %d",
1 << arg, BIO_MAX_VECS);
return -EINVAL;
}
F2FS_OPTION(sbi).write_io_size_bits = arg;
break;
#ifdef CONFIG_F2FS_FAULT_INJECTION
case Opt_fault_injection:
if (args->from && match_int(args, &arg))
return -EINVAL;
f2fs_build_fault_attr(sbi, arg, F2FS_ALL_FAULT_TYPE);
set_opt(sbi, FAULT_INJECTION);
break;
case Opt_fault_type:
if (args->from && match_int(args, &arg))
return -EINVAL;
f2fs_build_fault_attr(sbi, 0, arg);
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
case Opt_lazytime:
sb->s_flags |= SB_LAZYTIME;
break;
case Opt_nolazytime:
sb->s_flags &= ~SB_LAZYTIME;
break;
#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_whint:
name = match_strdup(&args[0]);
if (!name)
return -ENOMEM;
if (!strcmp(name, "user-based")) {
F2FS_OPTION(sbi).whint_mode = WHINT_MODE_USER;
} else if (!strcmp(name, "off")) {
F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
} else if (!strcmp(name, "fs-based")) {
F2FS_OPTION(sbi).whint_mode = WHINT_MODE_FS;
} else {
kfree(name);
return -EINVAL;
}
kfree(name);
break;
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;
}
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;
}
strcpy(noext[noext_cnt], name);
F2FS_OPTION(sbi).nocompress_ext_cnt++;
kfree(name);
break;
case Opt_compress_chksum:
F2FS_OPTION(sbi).compress_chksum = true;
break;
case Opt_compress_mode:
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:
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;
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
#ifndef CONFIG_UNICODE
if (f2fs_sb_has_casefold(sbi)) {
f2fs_err(sbi,
"Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
return -EINVAL;
}
#endif
/*
* 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.
*/
#ifndef CONFIG_BLK_DEV_ZONED
if (f2fs_sb_has_blkzoned(sbi)) {
f2fs_err(sbi, "Zoned block device support is not enabled");
return -EINVAL;
}
#endif
if (f2fs_sb_has_blkzoned(sbi)) {
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;
}
}
#ifdef CONFIG_F2FS_FS_COMPRESSION
if (f2fs_test_compress_extension(sbi)) {
f2fs_err(sbi, "invalid compress or nocompress extension");
return -EINVAL;
}
#endif
if (F2FS_IO_SIZE_BITS(sbi) && !f2fs_lfs_mode(sbi)) {
f2fs_err(sbi, "Should set mode=lfs with %uKB-sized IO",
F2FS_IO_SIZE_KB(sbi));
return -EINVAL;
}
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 = sizeof(struct f2fs_xattr_header) / sizeof(__le32);
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, DISABLE_CHECKPOINT) && f2fs_lfs_mode(sbi)) {
f2fs_err(sbi, "LFS not compatible with checkpoint=disable");
return -EINVAL;
}
/* Not pass down write hints if the number of active logs is lesser
* than NR_CURSEG_PERSIST_TYPE.
*/
if (F2FS_OPTION(sbi).active_logs != NR_CURSEG_TYPE)
F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
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;
fi = f2fs_kmem_cache_alloc(f2fs_inode_cachep,
GFP_F2FS_ZERO, false, F2FS_SB(sb));
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_rwsem(&fi->i_sem);
spin_lock_init(&fi->i_size_lock);
INIT_LIST_HEAD(&fi->dirty_list);
INIT_LIST_HEAD(&fi->gdirty_list);
INIT_LIST_HEAD(&fi->inmem_ilist);
INIT_LIST_HEAD(&fi->inmem_pages);
mutex_init(&fi->inmem_lock);
init_rwsem(&fi->i_gc_rwsem[READ]);
init_rwsem(&fi->i_gc_rwsem[WRITE]);
init_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);
/* some remained atomic pages should discarded */
if (f2fs_is_atomic_file(inode))
f2fs_drop_inmem_pages(inode);
/* 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->alloc_valid_block_count);
percpu_counter_destroy(&sbi->total_valid_inode_count);
}
static void destroy_device_list(struct f2fs_sb_info *sbi)
{
int i;
for (i = 0; i < sbi->s_ndevs; i++) {
blkdev_put(FDEV(i).bdev, FMODE_EXCL);
#ifdef CONFIG_BLK_DEV_ZONED
kvfree(FDEV(i).blkz_seq);
kfree(FDEV(i).zone_capacity_blocks);
#endif
}
kvfree(sbi->devs);
}
static void f2fs_put_super(struct super_block *sb)
{
struct f2fs_sb_info *sbi = F2FS_SB(sb);
int i;
bool dropped;
/* 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,
};
f2fs_write_checkpoint(sbi, &cpc);
}
/* be sure to wait for any on-going discard commands */
dropped = f2fs_issue_discard_timeout(sbi);
if ((f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) &&
!sbi->discard_blks && !dropped) {
struct cp_control cpc = {
.reason = CP_UMOUNT | CP_TRIMMED,
};
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);
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);
f2fs_destroy_post_read_wq(sbi);
kvfree(sbi->ckpt);
sb->s_fs_info = NULL;
if (sbi->s_chksum_driver)
crypto_free_shash(sbi->s_chksum_driver);
kfree(sbi->raw_super);
destroy_device_list(sbi);
f2fs_destroy_page_array_cache(sbi);
f2fs_destroy_xattr_caches(sbi);
mempool_destroy(sbi->write_io_dummy);
#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]);
#ifdef CONFIG_UNICODE
utf8_unload(sb->s_encoding);
#endif
kfree(sbi);
}
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)
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;
/* ensure no checkpoint required */
if (!llist_empty(&F2FS_SB(sb)->cprc_info.issue_list))
return -EINVAL;
return 0;
}
static int f2fs_unfreeze(struct super_block *sb)
{
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;
total_count = le64_to_cpu(sbi->raw_super->block_count);
user_block_count = sbi->user_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;
buf->f_bfree = user_block_count - valid_user_blocks(sbi) -
sbi->current_reserved_blocks;
spin_lock(&sbi->stat_lock);
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;
avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
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 - valid_node_count(sbi),
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");
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");
else
seq_puts(seq, ",nodiscard");
if (test_opt(sbi, NOHEAP))
seq_puts(seq, ",no_heap");
else
seq_puts(seq, ",heap");
#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 (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE))
seq_puts(seq, ",flush_merge");
if (test_opt(sbi, NOBARRIER))
seq_puts(seq, ",nobarrier");
if (test_opt(sbi, FASTBOOT))
seq_puts(seq, ",fastboot");
if (test_opt(sbi, EXTENT_CACHE))
seq_puts(seq, ",extent_cache");
else
seq_puts(seq, ",noextent_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");
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));
if (F2FS_IO_SIZE_BITS(sbi))
seq_printf(seq, ",io_bits=%u",
F2FS_OPTION(sbi).write_io_size_bits);
#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);
if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER)
seq_printf(seq, ",whint_mode=%s", "user-based");
else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS)
seq_printf(seq, ",whint_mode=%s", "fs-based");
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).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");
return 0;
}
static void default_options(struct f2fs_sb_info *sbi)
{
/* init some FS parameters */
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;
F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
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);
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;
sbi->sb->s_flags &= ~SB_INLINECRYPT;
set_opt(sbi, INLINE_XATTR);
set_opt(sbi, INLINE_DATA);
set_opt(sbi, INLINE_DENTRY);
set_opt(sbi, EXTENT_CACHE);
set_opt(sbi, NOHEAP);
clear_opt(sbi, DISABLE_CHECKPOINT);
set_opt(sbi, MERGE_CHECKPOINT);
F2FS_OPTION(sbi).unusable_cap = 0;
sbi->sb->s_flags |= SB_LAZYTIME;
set_opt(sbi, FLUSH_MERGE);
if (f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi))
set_opt(sbi, DISCARD);
if (f2fs_sb_has_blkzoned(sbi)) {
F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS;
F2FS_OPTION(sbi).discard_unit = DISCARD_UNIT_SECTION;
} else {
F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE;
F2FS_OPTION(sbi).discard_unit = DISCARD_UNIT_BLOCK;
}
#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;
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;
f2fs_update_time(sbi, DISABLE_TIME);
while (!f2fs_time_over(sbi, DISABLE_TIME)) {
down_write(&sbi->gc_lock);
err = f2fs_gc(sbi, true, false, false, NULL_SEGNO);
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;
}
down_write(&sbi->gc_lock);
cpc.reason = CP_PAUSE;
set_sbi_flag(sbi, SBI_CP_DISABLED);
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:
up_write(&sbi->gc_lock);
restore_flag:
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);
cond_resched();
congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT);
} while (get_pages(sbi, F2FS_DIRTY_DATA) && retry--);
if (unlikely(retry < 0))
f2fs_warn(sbi, "checkpoint=enable has some unwritten data.");
down_write(&sbi->gc_lock);
f2fs_dirty_to_prefree(sbi);
clear_sbi_flag(sbi, SBI_CP_DISABLED);
set_sbi_flag(sbi, SBI_IS_DIRTY);
up_write(&sbi->gc_lock);
f2fs_sync_fs(sbi->sb, 1);
}
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_ckpt = false, need_stop_ckpt = false;
bool need_restart_flush = false, need_stop_flush = false;
bool need_restart_discard = false, need_stop_discard = false;
bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE);
bool enable_checkpoint = !test_opt(sbi, DISABLE_CHECKPOINT);
bool no_io_align = !F2FS_IO_ALIGNED(sbi);
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);
struct discard_cmd_control *dcc;
#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);
/* parse mount options */
err = parse_options(sb, data, true);
if (err)
goto restore_opts;
/*
* 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_sb_has_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
/* 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_extent_cache == !!test_opt(sbi, EXTENT_CACHE)) {
err = -EINVAL;
f2fs_warn(sbi, "switch extent_cache option is not allowed");
goto restore_opts;
}
if (no_io_align == !!F2FS_IO_ALIGNED(sbi)) {
err = -EINVAL;
f2fs_warn(sbi, "switch io_bits 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 ||
F2FS_OPTION(sbi).whint_mode != org_mount_opt.whint_mode) {
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);
}
if ((*flags & SB_RDONLY) || test_opt(sbi, DISABLE_CHECKPOINT) ||
!test_opt(sbi, MERGE_CHECKPOINT)) {
f2fs_stop_ckpt_thread(sbi);
need_restart_ckpt = true;
} else {
err = f2fs_start_ckpt_thread(sbi);
if (err) {
f2fs_err(sbi,
"Failed to start F2FS issue_checkpoint_thread (%d)",
err);
goto restore_gc;
}
need_stop_ckpt = true;
}
/*
* 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_ckpt;
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 {
dcc = SM_I(sbi)->dcc_info;
f2fs_stop_discard_thread(sbi);
if (atomic_read(&dcc->discard_cmd_cnt))
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;
} else {
f2fs_enable_checkpoint(sbi);
}
}
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_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_ckpt:
if (need_restart_ckpt) {
if (f2fs_start_ckpt_thread(sbi))
f2fs_warn(sbi, "background ckpt thread has stopped");
} else if (need_stop_ckpt) {
f2fs_stop_ckpt_thread(sbi);
}
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;
}
#ifdef CONFIG_QUOTA
/* 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;
char *kaddr;
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) {
congestion_wait(BLK_RW_ASYNC,
DEFAULT_IO_TIMEOUT);
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;
}
kaddr = kmap_atomic(page);
memcpy(data, kaddr + offset, tocopy);
kunmap_atomic(kaddr);
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;
char *kaddr;
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, 0,
&page, &fsdata);
if (unlikely(err)) {
if (err == -ENOMEM) {
congestion_wait(BLK_RW_ASYNC,
DEFAULT_IO_TIMEOUT);
goto retry;
}
set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
break;
}
kaddr = kmap_atomic(page);
memcpy(kaddr + offset, data, tocopy);
kunmap_atomic(kaddr);
flush_dcache_page(page);
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->i_mtime = inode->i_ctime = current_time(inode);
f2fs_mark_inode_dirty_sync(inode, false);
return len - towrite;
}
static struct dquot **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;
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 */
qf_inode->i_flags |= S_NOQUOTA;
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;
/*
* 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, type))
return 0;
inode_lock(dqopt->files[cnt]);
/*
* do_quotactl
* f2fs_quota_sync
* down_read(quota_sem)
* dquot_writeback_dquots()
* f2fs_dquot_commit
* block_operation
* down_read(quota_sem)
*/
f2fs_lock_op(sbi);
down_read(&sbi->quota_sem);
ret = f2fs_quota_sync_file(sbi, cnt);
up_read(&sbi->quota_sem);
f2fs_unlock_op(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;
}
err = f2fs_quota_sync(sb, type);
if (err)
return err;
err = dquot_quota_on(sb, type, format_id, path);
if (err)
return err;
inode = d_inode(path->dentry);
inode_lock(inode);
F2FS_I(inode)->i_flags |= F2FS_NOATIME_FL | F2FS_IMMUTABLE_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_NOATIME_FL | F2FS_IMMUTABLE_FL);
f2fs_set_inode_flags(inode);
inode_unlock(inode);
f2fs_mark_inode_dirty_sync(inode, false);
out_put:
iput(inode);
return err;
}
static int f2fs_quota_off(struct super_block *sb, int type)
{
struct f2fs_sb_info *sbi = F2FS_SB(sb);
int err;
err = __f2fs_quota_off(sb, type);
/*
* quotactl can shutdown journalled quota, result in inconsistence
* between quota record and fs data by following updates, tag the
* flag to let fsck be aware of it.
*/
if (is_journalled_quota(sbi))
set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
return err;
}
void f2fs_quota_off_umount(struct super_block *sb)
{
int type;
int err;
for (type = 0; type < MAXQUOTAS; type++) {
err = __f2fs_quota_off(sb, type);
if (err) {
int ret = dquot_quota_off(sb, type);
f2fs_err(F2FS_SB(sb), "Fail to turn off disk quota (type: %d, err: %d, ret:%d), Please run fsck to fix it.",
type, err, ret);
set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
}
}
/*
* In case of checkpoint=disable, we must flush quota blocks.
* This can cause NULL exception for node_inode in end_io, since
* put_super already dropped it.
*/
sync_filesystem(sb);
}
static void f2fs_truncate_quota_inode_pages(struct super_block *sb)
{
struct quota_info *dqopt = sb_dqopt(sb);
int type;
for (type = 0; type < MAXQUOTAS; type++) {
if (!dqopt->files[type])
continue;
f2fs_inode_synced(dqopt->files[type]);
}
}
static int f2fs_dquot_commit(struct dquot *dquot)
{
struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
int ret;
down_read_nested(&sbi->quota_sem, SINGLE_DEPTH_NESTING);
ret = dquot_commit(dquot);
if (ret < 0)
set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
up_read(&sbi->quota_sem);
return ret;
}
static int f2fs_dquot_acquire(struct dquot *dquot)
{
struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
int ret;
down_read(&sbi->quota_sem);
ret = dquot_acquire(dquot);
if (ret < 0)
set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
up_read(&sbi->quota_sem);
return ret;
}
static int f2fs_dquot_release(struct dquot *dquot)
{
struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
int ret = dquot_release(dquot);
if (ret < 0)
set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
return ret;
}
static int f2fs_dquot_mark_dquot_dirty(struct dquot *dquot)
{
struct super_block *sb = dquot->dq_sb;
struct f2fs_sb_info *sbi = F2FS_SB(sb);
int ret = dquot_mark_dquot_dirty(dquot);
/* if we are using journalled quota */
if (is_journalled_quota(sbi))
set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
return ret;
}
static int f2fs_dquot_commit_info(struct super_block *sb, int type)
{
struct f2fs_sb_info *sbi = F2FS_SB(sb);
int ret = dquot_commit_info(sb, type);
if (ret < 0)
set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
return ret;
}
static int f2fs_get_projid(struct inode *inode, kprojid_t *projid)
{
*projid = F2FS_I(inode)->i_projid;
return 0;
}
static const struct dquot_operations f2fs_quota_operations = {
.get_reserved_space = f2fs_get_reserved_space,
.write_dquot = f2fs_dquot_commit,
.acquire_dquot = f2fs_dquot_acquire,
.release_dquot = f2fs_dquot_release,
.mark_dirty = f2fs_dquot_mark_dquot_dirty,
.write_info = f2fs_dquot_commit_info,
.alloc_dquot = dquot_alloc,
.destroy_dquot = dquot_destroy,
.get_projid = f2fs_get_projid,
.get_next_id = dquot_get_next_id,
};
static const struct quotactl_ops f2fs_quotactl_ops = {
.quota_on = f2fs_quota_on,
.quota_off = f2fs_quota_off,
.quota_sync = f2fs_quota_sync,
.get_state = dquot_get_state,
.set_info = dquot_set_dqinfo,
.get_dqblk = dquot_get_dqblk,
.set_dqblk = dquot_set_dqblk,
.get_nextdqblk = dquot_get_next_dqblk,
};
#else
int f2fs_quota_sync(struct super_block *sb, int type)
{
return 0;
}
void f2fs_quota_off_umount(struct super_block *sb)
{
}
#endif
static const struct super_operations f2fs_sops = {
.alloc_inode = f2fs_alloc_inode,
.free_inode = f2fs_free_inode,
.drop_inode = f2fs_drop_inode,
.write_inode = f2fs_write_inode,
.dirty_inode = f2fs_dirty_inode,
.show_options = f2fs_show_options,
#ifdef CONFIG_QUOTA
.quota_read = f2fs_quota_read,
.quota_write = f2fs_quota_write,
.get_dquots = f2fs_get_dquots,
#endif
.evict_inode = f2fs_evict_inode,
.put_super = f2fs_put_super,
.sync_fs = f2fs_sync_fs,
.freeze_fs = f2fs_freeze,
.unfreeze_fs = f2fs_unfreeze,
.statfs = f2fs_statfs,
.remount_fs = f2fs_remount,
};
#ifdef CONFIG_FS_ENCRYPTION
static int f2fs_get_context(struct inode *inode, void *ctx, size_t len)
{
return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
ctx, len, NULL);
}
static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len,
void *fs_data)
{
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
/*
* Encrypting the root directory is not allowed because fsck
* expects lost+found directory to exist and remain unencrypted
* if LOST_FOUND feature is enabled.
*
*/
if (f2fs_sb_has_lost_found(sbi) &&
inode->i_ino == F2FS_ROOT_INO(sbi))
return -EPERM;
return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
ctx, len, fs_data, XATTR_CREATE);
}
static const union fscrypt_policy *f2fs_get_dummy_policy(struct super_block *sb)
{
return F2FS_OPTION(F2FS_SB(sb)).dummy_enc_policy.policy;
}
static bool f2fs_has_stable_inodes(struct super_block *sb)
{
return true;
}
static void f2fs_get_ino_and_lblk_bits(struct super_block *sb,
int *ino_bits_ret, int *lblk_bits_ret)
{
*ino_bits_ret = 8 * sizeof(nid_t);
*lblk_bits_ret = 8 * sizeof(block_t);
}
static int f2fs_get_num_devices(struct super_block *sb)
{
struct f2fs_sb_info *sbi = F2FS_SB(sb);
if (f2fs_is_multi_device(sbi))
return sbi->s_ndevs;
return 1;
}
static void f2fs_get_devices(struct super_block *sb,
struct request_queue **devs)
{
struct f2fs_sb_info *sbi = F2FS_SB(sb);
int i;
for (i = 0; i < sbi->s_ndevs; i++)
devs[i] = bdev_get_queue(FDEV(i).bdev);
}
static const struct fscrypt_operations f2fs_cryptops = {
.key_prefix = "f2fs:",
.get_context = f2fs_get_context,
.set_context = f2fs_set_context,
.get_dummy_policy = f2fs_get_dummy_policy,
.empty_dir = f2fs_empty_dir,
.max_namelen = F2FS_NAME_LEN,
.has_stable_inodes = f2fs_has_stable_inodes,
.get_ino_and_lblk_bits = f2fs_get_ino_and_lblk_bits,
.get_num_devices = f2fs_get_num_devices,
.get_devices = f2fs_get_devices,
};
#endif
static struct inode *f2fs_nfs_get_inode(struct super_block *sb,
u64 ino, u32 generation)
{