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

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Message-ID: <1337932267.2932.7.camel@dabdike.int.hansenpartnership.com>
Date:	Fri, 25 May 2012 08:51:07 +0100
From:	James Bottomley <James.Bottomley@...senPartnership.com>
To:	Dan Williams <dan.j.williams@...el.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, 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.

James


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