linux-kernel - Re: [PATCH] mm: io_uring: allow oom-killer from io_uring

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Message-Id: <164424864739.20474.1005758721065319672.b4-ty@kernel.dk>
Date:   Mon, 07 Feb 2022 08:44:07 -0700
From:   Jens Axboe <axboe@...nel.dk>
To:     Pavel Begunkov <asml.silence@...il.com>,
        Shakeel Butt <shakeelb@...gle.com>
Cc:     linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        io-uring@...r.kernel.org, Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] mm: io_uring: allow oom-killer from io_uring_setup

On Mon, 24 Jan 2022 21:17:36 -0800, Shakeel Butt wrote:
> On an overcommitted system which is running multiple workloads of
> varying priorities, it is preferred to trigger an oom-killer to kill a
> low priority workload than to let the high priority workload receiving
> ENOMEMs. On our memory overcommitted systems, we are seeing a lot of
> ENOMEMs instead of oom-kills because io_uring_setup callchain is using
> __GFP_NORETRY gfp flag which avoids the oom-killer. Let's remove it and
> allow the oom-killer to kill a lower priority job.
> 
> [...]

Applied, thanks!

[1/1] mm: io_uring: allow oom-killer from io_uring_setup
      commit: 0a3f1e0beacf6cc8ae5f846b0641c1df476e83d6

Best regards,
-- 
Jens Axboe