linux-kernel - Re: [PATCHSET] async: reimplement synchronization

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Message-ID: <20130123173330.GE2373@mtj.dyndns.org>
Date:	Wed, 23 Jan 2013 09:33:30 -0800
From:	Tejun Heo <tj@...nel.org>
To:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Arjan van de Ven <arjan@...ux.intel.com>,
	Dan Williams <djbw@...com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCHSET] async: reimplement synchronization

On Fri, Jan 18, 2013 at 04:39:23PM -0800, Tejun Heo wrote:
> Synchronization in async got messy as more features were added and
> while being converted to workqueue.  It currently has a global list of
> pending async items and per-domain running lists.  Per-domain sync has
> to search through the global pending list and global sync has to
> iterate over all active registered domains.
> 
> This patchset reimplements async synchronization such that async items
> stay on two pending lists - global and per-domain - the whole time
> till completion, which simplifies both execution and synchronization.
> There's no need to moving around items on execution and both domain
> and global sync can look at the head of the list to determine the
> lowest cookie in flight.

Applied to wq/for-3.9-async.  Thanks.

-- 
tejun
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