tree c7ba017472071fe72b1d99628fba056b96a56575
parent 05aea81b4bc9e51dabd4559666c1d8d004f3662a
author Tejun Heo <tj@kernel.org> 1479769412 -0500
committer Jens Axboe <axboe@fb.com> 1479830389 -0700

block,blkcg: use __GFP_NOWARN for best-effort allocations in blkcg

blkcg allocates some per-cgroup data structures with GFP_NOWAIT and
when that fails falls back to operations which aren't specific to the
cgroup.  Occassional failures are expected under pressure and falling
back to non-cgroup operation is the right thing to do.

Unfortunately, I forgot to add __GFP_NOWARN to these allocations and
these expected failures end up creating a lot of noise.  Add
__GFP_NOWARN.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Marc MERLIN <marc@merlins.org>
Reported-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Jens Axboe <axboe@fb.com>