Re: [PATCH] block,blkcg: use __GFP_NOWARN for best-effort allocations in blkcg

From: Jens Axboe
Date: Tue Nov 22 2016 - 11:00:45 EST

On 11/21/2016 04:03 PM, Tejun Heo wrote:
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

Thanks Tejun, added for 4.10.

Jens Axboe