linux-kernel - Re: [PATCH 1/4] async: introduce 'async

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

Message-ID: <CABE8wwtfW0FusNuOEmwMxZLVMTVSj0R9HCA5xLWidrgj_7Ax+A@mail.gmail.com>
Date:	Fri, 25 May 2012 01:18:21 -0700
From:	Dan Williams <dan.j.williams@...el.com>
To:	James Bottomley <James.Bottomley@...senpartnership.com>
Cc:	mroos@...ux.ee, linux-scsi@...r.kernel.org,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	linux-kernel@...r.kernel.org,
	Arjan van de Ven <arjan@...ux.intel.com>,
	Liam Girdwood <lrg@...com>
Subject: Re: [PATCH 1/4] async: introduce 'async_domain' type

On Fri, May 25, 2012 at 12:51 AM, James Bottomley
<James.Bottomley@...senpartnership.com> wrote:
> On Fri, 2012-05-25 at 00:50 -0700, Dan Williams wrote:
>> This is in preparation for teaching async_synchronize_full() to sync all
>> pending async work, and not just on the async_running domain.  This
>> conversion is functionally equivalent, just embedding the existing list
>> in a new async_domain type.
>
> This looks good, but I want Arjan and others who invented the async code
> to speed up boot to comment on all of this.  What was the intention of
> async_synchronize_full() and if it wasn't to synchronise all domains,
> should we fix the documentation and add a new primitive to do that,
> since boot clearly assumes the all domains behaviour.
>
> In the mean time, this is probably all a bit much for a merge window, so
> I'll revert
>
> commit a7a20d103994fd760766e6c9d494daa569cbfe06
> Author: Dan Williams <dan.j.williams@...el.com>
> Date:   Thu Mar 22 17:05:11 2012 -0700
>
>    [SCSI] sd: limit the scope of the async probe domain
>
> And we'll put whatever is chosen in early for the next merge window.
>

Makes sense... but could also go ahead with the smaller fix I posted
for 3.5.  Meelis confirms it is working.

Otherwise this leaves the pending libsas suspend/resume support in
limbo, since it will certainly deadlock in the case where any device
fails, or is slow to come back from resume.

--
Dan
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/