On Mon, Aug 03, 2015 at 03:32:26PM +0300, Vladimir Davydov wrote:

It does not make much sense to call idr_preload with the same gfp mask
as the following idr_alloc, but this is what we do in cgroup_idr_alloc.
This patch fixes the idr_preload usage by making cgroup_idr_alloc call
idr_alloc w/o __GFP_WAIT. Since it is now safe to call cgroup_idr_alloc
with GFP_KERNEL, the patch also fixes all its callers appropriately.

Applied to cgroup/for-4.3.

Thanks.

-- 
tejun