percpu: update alloc path to only scan if contig hints are broken

Browse source

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>

...

This commit is contained in:

Dennis Zhou (Facebook) 2017-07-24 19:02:16 -04:00 • committed by Tejun Heo

parent 268625a6f9

commit fc3043345a

1 changed files with 56 additions and 3 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

59

mm/percpu.c

View file