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| author |   Gabriel Krisman Bertazi <krisman@collabora.com> | 2019-06-19 23:45:09 -0400 |
|---|---|---|
| committer |   Theodore Ts'o <tytso@mit.edu> | 2019-06-19 23:45:09 -0400 |
| commit | 3ae72562ad917df36a1b1247d749240e3b4865db (patch) | |
| tree | c458ce5abc17452b19e2ecc06ce7d46841d5ec63 /include/linux/unicode.h | |
| parent | ext4: make __ext4_get_inode_loc plug (diff) | |
| download | linux-dev-3ae72562ad917df36a1b1247d749240e3b4865db.tar.xz linux-dev-3ae72562ad917df36a1b1247d749240e3b4865db.zip | |
ext4: optimize case-insensitive lookups
Temporarily cache a casefolded version of the file name under lookup in
ext4_filename, to avoid repeatedly casefolding it. I got up to 30%
speedup on lookups of large directories (>100k entries), depending on
the length of the string under lookup.
Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'include/linux/unicode.h')
| -rw-r--r-- | include/linux/unicode.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/unicode.h b/include/linux/unicode.h index aec2c6d800aa..990aa97d8049 100644 --- a/include/linux/unicode.h +++ b/include/linux/unicode.h @@ -17,6 +17,9 @@ int utf8_strncmp(const struct unicode_map *um, int utf8_strncasecmp(const struct unicode_map *um, const struct qstr *s1, const struct qstr *s2); +int utf8_strncasecmp_folded(const struct unicode_map *um, + const struct qstr *cf, + const struct qstr *s1); int utf8_normalize(const struct unicode_map *um, const struct qstr *str, unsigned char *dest, size_t dlen); |