linux-kernel - Re: [PATCH 11/14] rq-qos: introduce dio

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Message-ID: <be66a8be-f55b-3899-b6a6-3db6446acf2b@infradead.org>
Date:   Tue, 3 Jul 2018 12:29:13 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Josef Bacik <josef@...icpanda.com>, axboe@...nel.dk,
        linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
        hannes@...xchg.org, tj@...nel.org, linux-fsdevel@...r.kernel.org,
        linux-block@...r.kernel.org, kernel-team@...com
Cc:     Josef Bacik <jbacik@...com>
Subject: Re: [PATCH 11/14] rq-qos: introduce dio_bio callback

On 07/03/2018 08:15 AM, Josef Bacik wrote:
> From: Josef Bacik <jbacik@...com>
> 
> wbt cares only about request completion time, but controllers may need

Please spell out wt^Hbt.
whatever it is.

> information that is on the bio itself, so add a done_bio callback for
> rq-qos so things like blk-iolatency can use it to have the bio when it
> completes.
> 
> Signed-off-by: Josef Bacik <jbacik@...com>
> ---
>  block/bio.c        |  4 ++++
>  block/blk-rq-qos.c | 10 ++++++++++
>  block/blk-rq-qos.h |  2 ++
>  3 files changed, 16 insertions(+)


-- 
~Randy