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(parent: 268625a) | patch
percpu: update alloc path to only scan if contig hints are broken
authorDennis Zhou (Facebook) <dennisszhou@gmail.com>
Mon, 24 Jul 2017 23:02:16 +0000 (19:02 -0400)
committerTejun Heo <tj@kernel.org>
Wed, 26 Jul 2017 21:41:06 +0000 (17:41 -0400)
commitfc3043345a648a49978c6fb0bf8c188b7cfe0ab3
tree3384725859de4b8f449e393d5cef89c00a26dae5tree | snapshot (tar.gz zip)
parent268625a6f9df6a7c9b0ae7707a8a1cd5a9993bd2commit | diff
percpu: update alloc path to only scan if contig hints are broken

Metadata is kept per block to keep track of where the contig hints are.
Scanning can be avoided when the contig hints are not broken. In that
case, left and right contigs have to be managed manually.

This patch changes the allocation path hint updating to only scan when
contig hints are broken.

Signed-off-by: Dennis Zhou <dennisszhou@gmail.com>
Reviewed-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
mm/percpu.c diff | blob | blame | history