linux-kernel - [PATCH BUGFIX 0/4] bfq: fix bugs breaking bandwidth guarantees occasionally

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Message-Id: <20180625194806.7619-1-paolo.valente@linaro.org>
Date:   Mon, 25 Jun 2018 21:48:02 +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, broonie@...nel.org,
        linus.walleij@...aro.org, bfq-iosched@...glegroups.com,
        oleksandr@...alenko.name, Paolo Valente <paolo.valente@...aro.org>
Subject: [PATCH BUGFIX 0/4] bfq: fix bugs breaking bandwidth guarantees occasionally

Hi,
during some bandwidth tests, I found some occasional but severe
malfunctions (losses of bandwidth control). The first three patches in
this series fix the bugs that caused these malfunctions. The last
patch is a fix/improvement of the name of one of the functions
involved with these bugs.

I guess these patches are appropriate for next kernel release.

Thanks,
Paolo

Paolo Valente (4):
  block, bfq: add/remove entity weights correctly
  block, bfq: do not expire a queue that will deserve dispatch plugging
  block, bfq: fix service being wrongly set to zero in case of
    preemption
  block, bfq: fix service being wrongly set to zero in case of
    preemption

 block/bfq-iosched.c | 131 +++++++++++++++++++++++++++++++++++++++++++---------
 block/bfq-iosched.h |   7 ++-
 block/bfq-wf2q.c    |  30 ++++++------
 3 files changed, 128 insertions(+), 40 deletions(-)

--
2.16.1