netdev - Re: [1/1] Block device throttling [Re: Distributed storage.]

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:	Sat, 1 Sep 2007 21:42:53 -0700
From:	Daniel Phillips <phillips@...nq.net>
To:	Alasdair G Kergon <agk@...hat.com>
Cc:	Evgeniy Polyakov <johnpol@....mipt.ru>,
	Jens Axboe <jens.axboe@...cle.com>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	Peter Zijlstra <peterz@...radead.org>,
	Neil Brown <neilb@...e.de>
Subject: Re: [1/1] Block device throttling [Re: Distributed storage.]

On Friday 31 August 2007 14:41, Alasdair G Kergon wrote:
> On Thu, Aug 30, 2007 at 04:20:35PM -0700, Daniel Phillips wrote:
> > Resubmitting a bio or submitting a dependent bio from
> > inside a block driver does not need to be throttled because all
> > resources required to guarantee completion must have been obtained
> > _before_ the bio was allowed to proceed into the block layer.
>
> I'm toying with the idea of keeping track of the maximum device stack
> depth for each stacked device, and only permitting it to increase in
> controlled circumstances.

Hi Alasdair,

What kind of circumstances did you have in mind?

Regards,

Daniel
-
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html