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

[Oleksandr Natalenko]

Hi.

On 25.06.2018 21:55, Paolo Valente wrote:
> 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: give a better name to bfq_bfqq_may_idle
>
>  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

So far, no smoke or visible issues while running it on my 2 SSDs with a 
daily workload applied.

Tested-by: Oleksandr Natalenko <oleksandr@xxxxxxxxxxxxxx>

Thanks.

--
  Oleksandr Natalenko (post-factum)