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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:   Mon, 25 Jun 2018 21:51:01 +0200
From:   Paolo Valente <paolo.valente@...aro.org>
To:     Jens Axboe <axboe@...nel.dk>
Cc:     linux-block <linux-block@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>, ulf.hansson@...aro.org,
        broonie@...nel.org, linus.walleij@...aro.org,
        bfq-iosched@...glegroups.com, oleksandr@...alenko.name
Subject: Re: [PATCH BUGFIX 0/4] bfq: fix bugs breaking bandwidth guarantees
 occasionally

Sorry, one commit message broken, resending ...

> Il giorno 25 giu 2018, alle ore 21:48, Paolo Valente <paolo.valente@...aro.org> ha scritto:
> 
> 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