linux-kernel - Re: [PATCH BUGFIX V3] block, bfq: add requeue-request hook

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Date:   Sat, 10 Feb 2018 09:29:29 +0100
From:   Oleksandr Natalenko <oleksandr@...alenko.name>
To:     Mike Galbraith <efault@....de>
Cc:     Paolo Valente <paolo.valente@...aro.org>,
        Jens Axboe <axboe@...nel.dk>,
        linux-block <linux-block@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Mark Brown <broonie@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        'Paolo Valente' via bfq-iosched 
        <bfq-iosched@...glegroups.com>,
        Alban Browaeys <alban.browaeys@...il.com>,
        Ming Lei <ming.lei@...hat.com>, Ivan Kozik <ivan@...ios.org>,
        169364@...denti.unimore.it, holger@...lied-asynchrony.com,
        Serena Ziviani <ziviani.serena@...il.com>
Subject: Re: [PATCH BUGFIX V3] block, bfq: add requeue-request hook

Hi.

On pátek 9. února 2018 18:29:39 CET Mike Galbraith wrote:
> On Fri, 2018-02-09 at 14:21 +0100, Oleksandr Natalenko wrote:
> > In addition to this I think it should be worth considering CC'ing Greg
> > to pull this fix into 4.15 stable tree.
> 
> This isn't one he can cherry-pick, some munging required, in which case
> he usually wants a properly tested backport.
> 
> 	-Mike

Maybe, this could be a good opportunity to push all the pending BFQ patches 
into the stable 4.15 branch? Because IIUC currently BFQ in 4.15 is just 
unusable.

Paolo?

---

block, bfq: add requeue-request hook
bfq-iosched: don't call bfqg_and_blkg_put for !CONFIG_BFQ_GROUP_IOSCHED
block, bfq: release oom-queue ref to root group on exit
block, bfq: put async queues for root bfq groups too
block, bfq: limit sectors served with interactive weight raising
block, bfq: limit tags for writes and async I/O
block, bfq: increase threshold to deem I/O as random
block, bfq: remove superfluous check in queue-merging setup
block, bfq: let a queue be merged only shortly after starting I/O
block, bfq: check low_latency flag in bfq_bfqq_save_state()
block, bfq: add missing rq_pos_tree update on rq removal
block, bfq: fix occurrences of request finish method's old name
block, bfq: consider also past I/O in soft real-time detection
block, bfq: remove batches of confusing ifdefs