From: Jens Axboe <axboe@kernel.dk>
To: Josef Bacik <josef@toxicpanda.com>,
kernel-team@fb.com, linux-block@vger.kernel.org,
akpm@linux-foundation.org, hannes@cmpxchg.org, tj@kernel.org,
linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org
Cc: Josef Bacik <jbacik@fb.com>
Subject: Re: [PATCH 04/14] blk: introduce REQ_SWAP
Date: Mon, 2 Jul 2018 15:47:41 -0600 [thread overview]
Message-ID: <702d4535-5ea7-8704-b23c-91c44fda34a8@kernel.dk> (raw)
In-Reply-To: <20180629192542.26649-5-josef@toxicpanda.com>
On 6/29/18 1:25 PM, Josef Bacik wrote:
> From: Josef Bacik <jbacik@fb.com>
>
> 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.
We should convert wbt to use that as well.
--
Jens Axboe
next prev parent reply other threads:[~2018-07-02 21:47 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-29 19:25 [PATCH 00/14][V5] Introduce io.latency io controller for cgroups Josef Bacik
2018-06-29 19:25 ` [PATCH 01/14] block: add bi_blkg to the bio " Josef Bacik
2018-06-29 19:25 ` [PATCH 02/14] block: introduce bio_issue_as_root_blkg Josef Bacik
2018-06-29 19:25 ` [PATCH 03/14] blk-cgroup: allow controllers to output their own stats Josef Bacik
2018-07-02 21:06 ` Tejun Heo
2018-06-29 19:25 ` [PATCH 04/14] blk: introduce REQ_SWAP Josef Bacik
2018-07-02 21:47 ` Jens Axboe [this message]
2018-06-29 19:25 ` [PATCH 05/14] swap,blkcg: issue swap io with the appropriate context Josef Bacik
2018-06-29 19:25 ` [PATCH 06/14] blkcg: add generic throttling mechanism Josef Bacik
2018-06-29 19:25 ` [PATCH 07/14] memcontrol: schedule throttling if we are congested Josef Bacik
2018-06-29 19:25 ` [PATCH 08/14] blk-stat: export helpers for modifying blk_rq_stat Josef Bacik
2018-06-29 19:25 ` [PATCH 09/14] blk-rq-qos: refactor out common elements of blk-wbt Josef Bacik
2018-06-29 19:25 ` [PATCH 10/14] block: remove external dependency on wbt_flags Josef Bacik
2018-06-29 19:25 ` [PATCH 11/14] rq-qos: introduce dio_bio callback Josef Bacik
2018-06-29 19:25 ` [PATCH 12/14] block: introduce blk-iolatency io controller Josef Bacik
2018-07-02 21:47 ` Tejun Heo
2018-06-29 19:25 ` [PATCH 13/14] Documentation: add a doc for blk-iolatency Josef Bacik
2018-07-02 21:49 ` Tejun Heo
2018-06-29 19:25 ` [PATCH 14/14] skip readahead if the cgroup is congested Josef Bacik
2018-07-02 21:13 ` Tejun Heo
2018-07-02 21:26 ` [PATCH 00/14][V5] Introduce io.latency io controller for cgroups Andrew Morton
2018-07-02 21:38 ` Josef Bacik
2018-07-02 21:41 ` Jens Axboe
2018-07-02 21:47 ` Andrew Morton
-- strict thread matches above, loose matches on Subject: below --
2018-07-03 15:14 [PATCH 0/14][V6] " Josef Bacik
2018-07-03 15:14 ` [PATCH 04/14] blk: introduce REQ_SWAP Josef Bacik
2018-06-27 19:09 [PATCH 00/14][V4] Introduce io.latency io controller for cgroups Josef Bacik
2018-06-27 19:09 ` [PATCH 04/14] blk: introduce REQ_SWAP Josef Bacik
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