Re: [PATCH BUGFIX] block, bfq: postpone rq preparation to insert or merge

[Paolo Valente]

> Il giorno 05 mag 2018, alle ore 10:19, Mike Galbraith <efault@xxxxxx> ha scritto:
> 
> On Fri, 2018-05-04 at 21:46 +0200, Mike Galbraith wrote:
>> Tentatively, I suspect you've just fixed the nasty stalls I reported a
>> while back.
> 
> Oh well, so much for optimism.  It took a lot, but just hung.

Yep, it'd have been a lot of luck, being your hang related to
different operations from those touched by this fix.  Maybe
time-before-failure stretched because your system suffered from the
illness cured by this fix too.

BTW, if you didn't run out of patience with this permanent issue yet,
I was thinking of two o three changes to retry to trigger your failure
reliably.  In case of success, I could restart racking my brains from
there.

Thanks,
Paolo