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| author | Paulo Alcantara <[email protected]> | 2023-03-24 16:56:33 +0000 |
|---|---|---|
| committer | Steve French <[email protected]> | 2023-03-24 19:37:12 +0000 |
| commit | be4fde79812f02914e350bde0bc4cfeae8429378 (patch) | |
| tree | b594a846eaf0e5664c8f8286721620f6e3d895f7 /tools/perf/scripts/python/stat-cpi.py | |
| parent | smb3: lower default deferred close timeout to address perf regression (diff) | |
| download | kernel-be4fde79812f02914e350bde0bc4cfeae8429378.tar.gz kernel-be4fde79812f02914e350bde0bc4cfeae8429378.zip | |
cifs: fix dentry lookups in directory handle cache
Get rid of any prefix paths in @path before lookup_positive_unlocked()
as it will call ->lookup() which already adds those prefix paths
through build_path_from_dentry().
This has caused a performance regression when mounting shares with a
prefix path where readdir(2) would end up retrying several times to
open bad directory names that contained duplicate prefix paths.
Fix this by skipping any prefix paths in @path before calling
lookup_positive_unlocked().
Fixes: e4029e072673 ("cifs: find and use the dentry for cached non-root directories also")
Cc: [email protected] # 6.1+
Signed-off-by: Paulo Alcantara (SUSE) <[email protected]>
Signed-off-by: Steve French <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/stat-cpi.py')
0 files changed, 0 insertions, 0 deletions