linux-kernel - [PATCH BUGFIX IMPROVEMENT V3 0/1] block, bfq: eliminate latency regression with fast drives

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Message-Id: <20190718070852.34568-1-paolo.valente@linaro.org>
Date:   Thu, 18 Jul 2019 09:08:51 +0200
From:   Paolo Valente <paolo.valente@...aro.org>
To:     Jens Axboe <axboe@...nel.dk>
Cc:     linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        ulf.hansson@...aro.org, linus.walleij@...aro.org,
        bfq-iosched@...glegroups.com, oleksandr@...alenko.name,
        bottura.nicola95@...il.com, srivatsa@...il.mit.edu,
        Paolo Valente <paolo.valente@...aro.org>
Subject: [PATCH BUGFIX IMPROVEMENT V3 0/1] block, bfq: eliminate latency regression with fast drives

[V3 that mentions the fixed/improved commit]

Hi Jens,
I've spotted a regression on a fast SSD: a loss of I/O-latency control
with interactive tasks (such as the application start up I usually
test). Details in the commit.

I do hope that, after proper review, this commit makes it for 5.3.

Thanks,
Paolo

Paolo Valente (1):
  block, bfq: check also in-flight I/O in dispatch plugging

 block/bfq-iosched.c | 67 +++++++++++++++++++++++++++++----------------
 1 file changed, 43 insertions(+), 24 deletions(-)

--
2.20.1