linux-kernel - Re: [PATCH 0/5] blkcg: Limit maximum number of aio requests available for cgroup

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Message-ID: <20171204200756.GC2421075@devbig577.frc2.facebook.com>
Date:   Mon, 4 Dec 2017 12:07:56 -0800
From:   Tejun Heo <tj@...nel.org>
To:     Kirill Tkhai <ktkhai@...tuozzo.com>
Cc:     axboe@...nel.dk, bcrl@...ck.org, viro@...iv.linux.org.uk,
        linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-aio@...ck.org, oleg@...hat.com
Subject: Re: [PATCH 0/5] blkcg: Limit maximum number of aio requests
 available for cgroup

Hello, Kirill.

On Mon, Dec 04, 2017 at 07:12:51PM +0300, Kirill Tkhai wrote:
> this patch set introduces accounting aio_nr and aio_max_nr per blkio cgroup.
> It may be used to limit number of aio requests, which are available for
> a cgroup, and could be useful for containers.

Can you please explain how this is a fundamental resource which can't
be controlled otherwise?

Thanks.

-- 
tejun