linux-kernel - Re: [PATCH 00/12] unify the interface of the proportional-share policy in blkio/io

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Message-ID: <20181112155406.rtx7ze2l3gadmiyx@MacBook-Pro-91.local>
Date:   Mon, 12 Nov 2018 10:54:08 -0500
From:   Josef Bacik <josef@...icpanda.com>
To:     Jens Axboe <axboe@...nel.dk>
Cc:     Paolo Valente <paolo.valente@...aro.org>,
        Oleksandr Natalenko <oleksandr@...alenko.name>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Tejun Heo <tj@...nel.org>, Li Zefan <lizefan@...wei.com>,
        Angelo Ruocco <angeloruocco90@...il.com>,
        Dennis Zhou <dennis@...nel.org>,
        Josef Bacik <josef@...icpanda.com>,
        Liu Bo <bo.liu@...ux.alibaba.com>,
        Bart Van Assche <bvanassche@....org>,
        Johannes Weiner <hannes@...xchg.org>,
        linux-block <linux-block@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Mark Brown <broonie@...nel.org>,
        'Paolo Valente' via bfq-iosched 
        <bfq-iosched@...glegroups.com>, cgroups@...r.kernel.org,
        linux-doc@...r.kernel.org, Jonathan Corbet <corbet@....net>,
        lennart@...ttering.net
Subject: Re: [PATCH 00/12] unify the interface of the proportional-share
 policy in blkio/io

On Mon, Nov 12, 2018 at 08:48:35AM -0700, Jens Axboe wrote:
> On 11/12/18 8:45 AM, Paolo Valente wrote:
> > BTW, since this patch series is probably even more useful for older
> > than for future kernels, might it make sense to also propose it for
> > stable/longterm kernels (provided that such a possibility exists)?
> 
> That just not how things work, we don't put different things in
> older/stable kernels, it's strictly backports of what we have in
> current/newer kernels. Hence it appears to be a dead end right now.
> 

It may not be useful currently, but my plans are to do a scheduler agnostic
proportional io controller next, so having these interfaces unified would be
nice so I don't have to do a rqos.io.weight or something similar.  Thanks,

Josef