linux-kernel - Re: [PATCH v5 3/4] ata: Enabling ATA Command Priorities

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Message-ID: <20161013232313.GC32534@mtj.duckdns.org>
Date:   Thu, 13 Oct 2016 19:23:13 -0400
From:   Tejun Heo <tj@...nel.org>
To:     Adam Manzanares <adam.manzanares@...t.com>
Cc:     axboe@...nel.dk, dan.j.williams@...el.com, hare@...e.de,
        martin.petersen@...cle.com, mchristi@...hat.com,
        toshi.kani@....com, ming.lei@...onical.com,
        sathya.prakash@...adcom.com, chaitra.basappa@...adcom.com,
        suganath-prabu.subramani@...adcom.com, linux-block@...r.kernel.org,
        linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org,
        MPT-FusionLinux.pdl@...adcom.com, linux-scsi@...r.kernel.org,
        Adam Manzanares <adam.manzanares@....com>
Subject: Re: [PATCH v5 3/4] ata: Enabling ATA Command Priorities

Hello,

On Thu, Oct 13, 2016 at 04:00:30PM -0700, Adam Manzanares wrote:
> This patch checks to see if an ATA device supports NCQ command priorities.
> If so and the user has specified an iocontext that indicates
> IO_PRIO_CLASS_RT then we build a tf with a high priority command.
> 
> This is done to improve the tail latency of commands that are high
> priority by passing priority to the device.
> 
> Signed-off-by: Adam Manzanares <adam.manzanares@....com>

Looks good to me.  Once the block changes are applied, I'll pull it
into libata tree and apply the ata part on top.

Thanks.

-- 
tejun