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Re: [PATCH 3/3] xfs: flush the CIL via a workqueue

To: Dave Chinner <david@xxxxxxxxxxxxx>
Subject: Re: [PATCH 3/3] xfs: flush the CIL via a workqueue
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Mon, 18 Jul 2011 22:03:17 -0400
Cc: xfs@xxxxxxxxxxx
In-reply-to: <1310960989-10284-4-git-send-email-david@xxxxxxxxxxxxx>
References: <1310960989-10284-1-git-send-email-david@xxxxxxxxxxxxx> <1310960989-10284-4-git-send-email-david@xxxxxxxxxxxxx>
User-agent: Mutt/1.5.21 (2010-09-15)
Generally looks okay, but doing a context switch in every log force
might bite us.  Less the general context switch overhead, but more
the nasty interactions with cfq, which are causing huge problems
for ext3/4, with no good way to fix them for workqueues.

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