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| author |   Pali Rohár <pali@kernel.org> | 2020-03-17 23:25:52 +0100 |
|---|---|---|
| committer |   Namjae Jeon <namjae.jeon@samsung.com> | 2020-06-09 16:48:44 +0900 |
| commit | dddf7da3985ee144b46ee287e81e47b9ee8bb980 (patch) | |
| tree | 6709f28baaf36b94e74dc0198896295e1d20b9a2 /fs/exfat | |
| parent | exfat: Improve wording of EXFAT_DEFAULT_IOCHARSET config option (diff) | |
| download | linux-dev-dddf7da3985ee144b46ee287e81e47b9ee8bb980.tar.xz linux-dev-dddf7da3985ee144b46ee287e81e47b9ee8bb980.zip | |
exfat: Simplify exfat_utf8_d_hash() for code points above U+FFFF
Function partial_name_hash() takes long type value into which can be stored
one Unicode code point. Therefore conversion from UTF-32 to UTF-16 is not
needed.
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Diffstat (limited to 'fs/exfat')
| -rw-r--r-- | fs/exfat/namei.c | 10 |
1 files changed, 2 insertions, 8 deletions
diff --git a/fs/exfat/namei.c b/fs/exfat/namei.c index 585b47b2db3d..fa926b9c883a 100644 --- a/fs/exfat/namei.c +++ b/fs/exfat/namei.c @@ -147,16 +147,10 @@ static int exfat_utf8_d_hash(const struct dentry *dentry, struct qstr *qstr) return charlen; /* - * Convert to UTF-16: code points above U+FFFF are encoded as - * surrogate pairs. * exfat_toupper() works only for code points up to the U+FFFF. */ - if (u > 0xFFFF) { - hash = partial_name_hash(exfat_high_surrogate(u), hash); - hash = partial_name_hash(exfat_low_surrogate(u), hash); - } else { - hash = partial_name_hash(exfat_toupper(sb, u), hash); - } + hash = partial_name_hash(u <= 0xFFFF ? exfat_toupper(sb, u) : u, + hash); } qstr->hash = end_name_hash(hash); |