Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-25 21:51:40 +00:00
Code Issues Packages Projects Releases Wiki Activity

ext4: factor out ext4_encoding_init()

Browse Source 
Factor out ext4_encoding_init(). No functional change.

Signed-off-by: Jason Yan <yanaijie@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20220916141527.1012715-8-yanaijie@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Jason Yan 2022-09-16 22:15:18 +08:00 committed by Theodore Ts'o
parent 0e495f7cc3
commit 39c135b08c
1 changed files with 50 additions and 36 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

86
fs/ext4/super.c
View File

@ -4492,6 +4492,54 @@ static int ext4_inode_info_init(struct super_block *sb,
return 0;
}
#if IS_ENABLED(CONFIG_UNICODE)
static int ext4_encoding_init(struct super_block *sb, struct ext4_super_block *es)
{
const struct ext4_sb_encodings *encoding_info;
struct unicode_map *encoding;
__u16 encoding_flags = le16_to_cpu(es->s_encoding_flags);
if (!ext4_has_feature_casefold(sb) || sb->s_encoding)
return 0;
encoding_info = ext4_sb_read_encoding(es);
if (!encoding_info) {
ext4_msg(sb, KERN_ERR,
"Encoding requested by superblock is unknown");
return -EINVAL;
}
encoding = utf8_load(encoding_info->version);
if (IS_ERR(encoding)) {
ext4_msg(sb, KERN_ERR,
"can't mount with superblock charset: %s-%u.%u.%u "
"not supported by the kernel. flags: 0x%x.",
encoding_info->name,
unicode_major(encoding_info->version),
unicode_minor(encoding_info->version),
unicode_rev(encoding_info->version),
encoding_flags);
return -EINVAL;
}
ext4_msg(sb, KERN_INFO,"Using encoding defined by superblock: "
"%s-%u.%u.%u with flags 0x%hx", encoding_info->name,
unicode_major(encoding_info->version),
unicode_minor(encoding_info->version),
unicode_rev(encoding_info->version),
encoding_flags);
sb->s_encoding = encoding;
sb->s_encoding_flags = encoding_flags;
return 0;
}
#else
static inline int ext4_encoding_init(struct super_block *sb, struct ext4_super_block *es)
{
return 0;
}
#endif
static int __ext4_fill_super(struct fs_context *fc, struct super_block *sb)
{
struct buffer_head *bh, **group_desc;
@ -4649,42 +4697,8 @@ static int __ext4_fill_super(struct fs_context *fc, struct super_block *sb)
ext4_apply_options(fc, sb);
#if IS_ENABLED(CONFIG_UNICODE)
if (ext4_has_feature_casefold(sb) && !sb->s_encoding) {
const struct ext4_sb_encodings *encoding_info;
struct unicode_map *encoding;
__u16 encoding_flags = le16_to_cpu(es->s_encoding_flags);
encoding_info = ext4_sb_read_encoding(es);
if (!encoding_info) {
ext4_msg(sb, KERN_ERR,
"Encoding requested by superblock is unknown");
goto failed_mount;
}
encoding = utf8_load(encoding_info->version);
if (IS_ERR(encoding)) {
ext4_msg(sb, KERN_ERR,
"can't mount with superblock charset: %s-%u.%u.%u "
"not supported by the kernel. flags: 0x%x.",
encoding_info->name,
unicode_major(encoding_info->version),
unicode_minor(encoding_info->version),
unicode_rev(encoding_info->version),
encoding_flags);
goto failed_mount;
}
ext4_msg(sb, KERN_INFO,"Using encoding defined by superblock: "
"%s-%u.%u.%u with flags 0x%hx", encoding_info->name,
unicode_major(encoding_info->version),
unicode_minor(encoding_info->version),
unicode_rev(encoding_info->version),
encoding_flags);
sb->s_encoding = encoding;
sb->s_encoding_flags = encoding_flags;
}
#endif
if (ext4_encoding_init(sb, es))
goto failed_mount;
if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA) {
printk_once(KERN_WARNING "EXT4-fs: Warning: mounting with data=journal disables delayed allocation, dioread_nolock, O_DIRECT and fast_commit support!\n");