Re: [PATCH 04/13] blk: introduce REQ_SWAP

From: Tejun Heo
Date: Wed May 30 2018 - 11:58:42 EST


On Tue, May 29, 2018 at 05:17:15PM -0400, Josef Bacik wrote:
> From: Josef Bacik <jbacik@xxxxxx>
>
> Just like REQ_META, it's important to know the IO coming down is swap
> in order to guard against potential IO priority inversion issues with
> cgroups. Add REQ_SWAP and use it for all swap IO, and add it to our
> bio_issue_as_root_blkg helper.
>
> Signed-off-by: Josef Bacik <jbacik@xxxxxx>

Acked-by: Tejun Heo <tj@xxxxxxxxxx>

Thanks.

--
tejun