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| author |   Chad Austin <chadaustin@fb.com> | 2019-01-28 16:34:34 -0800 |
|---|---|---|
| committer |   Miklos Szeredi <mszeredi@redhat.com> | 2019-02-13 13:15:15 +0100 |
| commit | fabf7e0262d0bd57739d29aeac94c44b0542ff1f (patch) | |
| tree | 3aab55728f04c6b7fc6d0b36de30f8b6ccbe2acc /tools/perf/scripts/python/stackcollapse.py | |
| parent | fuse: support clients that don't implement 'opendir' (diff) | |
| download | wireguard-linux-fabf7e0262d0bd57739d29aeac94c44b0542ff1f.tar.xz wireguard-linux-fabf7e0262d0bd57739d29aeac94c44b0542ff1f.zip | |
fuse: cache readdir calls if filesystem opts out of opendir
If a filesystem returns ENOSYS from opendir and thus opts out of
opendir and releasedir requests, it almost certainly would also like
readdir results cached. Default open_flags to FOPEN_KEEP_CACHE and
FOPEN_CACHE_DIR in that case.
With this patch, I've measured recursive directory enumeration across
large FUSE mounts to be faster than native mounts.
Signed-off-by: Chad Austin <chadaustin@fb.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
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