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| author | Davidlohr Bueso <dave@stgolabs.net> | 2017-09-09 02:15:15 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-09-09 04:26:49 +0300 |
| commit | 410bd5ecb276593e7ec1552014083215d4a43c3a (patch) | |
| tree | 3d507f3ba123be043d8a4e7582c8a48a0f71cb07 /fs/xfs/xfs_quotaops.c | |
| parent | f2686bb48618718c7141f117e2d607594e959bfc (diff) | |
| download | linux-410bd5ecb276593e7ec1552014083215d4a43c3a.tar.xz | |
procfs: use faster rb_first_cached()
... such that we can avoid the tree walks to get the node with the
smallest key. Semantically the same, as the previously used rb_first(),
but O(1). The main overhead is the extra footprint for the cached rb_node
pointer, which should not matter for procfs.
Link: http://lkml.kernel.org/r/20170719014603.19029-14-dave@stgolabs.net
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/xfs/xfs_quotaops.c')
0 files changed, 0 insertions, 0 deletions