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ext4: simplify ext4_sb_read_encoding 

Return the encoding table as the return value instead of as an argument,
and don't bother with the encoding flags as the caller can handle that
trivially.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Gabriel Krisman Bertazi <krisman@collabora.com>
Acked-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com>
This commit is contained in:
Christoph Hellwig 2021-09-15 08:59:56 +02:00 committed by Gabriel Krisman Bertazi
parent 9e1ff307c7
commit aa8bf298a9
1 changed files with 7 additions and 14 deletions
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21
fs/ext4/super.c
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@ -2023,24 +2023,17 @@ static const struct ext4_sb_encodings {
{EXT4_ENC_UTF8_12_1, "utf8", "12.1.0"},
};
static int ext4_sb_read_encoding(const struct ext4_super_block *es,
const struct ext4_sb_encodings **encoding,
__u16 *flags)
static const struct ext4_sb_encodings *
ext4_sb_read_encoding(const struct ext4_super_block *es)
{
__u16 magic = le16_to_cpu(es->s_encoding);
int i;
for (i = 0; i < ARRAY_SIZE(ext4_sb_encoding_map); i++)
if (magic == ext4_sb_encoding_map[i].magic)
break;
return &ext4_sb_encoding_map[i];
if (i >= ARRAY_SIZE(ext4_sb_encoding_map))
return -EINVAL;
*encoding = &ext4_sb_encoding_map[i];
*flags = le16_to_cpu(es->s_encoding_flags);
return 0;
return NULL;
}
#endif
@ -4161,10 +4154,10 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
if (ext4_has_feature_casefold(sb) && !sb->s_encoding) {
const struct ext4_sb_encodings *encoding_info;
struct unicode_map *encoding;
__u16 encoding_flags;
__u16 encoding_flags = le16_to_cpu(es->s_encoding_flags);
if (ext4_sb_read_encoding(es, &encoding_info,
&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;