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Re: [PATCH 0/4] writeback: tracing and wbc->nr_to_write fixes

To: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Subject: Re: [PATCH 0/4] writeback: tracing and wbc->nr_to_write fixes
From: Dave Chinner <david@xxxxxxxxxxxxx>
Date: Sat, 22 May 2010 10:09:13 +1000
Cc: linux-fsdevel@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, xfs@xxxxxxxxxxx
In-reply-to: <20100521150504.GA4598@xxxxxxxxxxxxx>
References: <1271731314-5893-1-git-send-email-david@xxxxxxxxxxxxx> <20100521150504.GA4598@xxxxxxxxxxxxx>
User-agent: Mutt/1.5.20 (2009-06-14)
On Fri, May 21, 2010 at 11:05:04AM -0400, Christoph Hellwig wrote:
> What happened to this series?  Getting the trace events in will
> defintively help with tuning the writeback code, and we'll also need
> the nr_to_write issue fixed some way.

I've been snowed under trying to get several different things done
all at the same time, so this has slipped. I'm trying to get back to
it early next week. The nr_to_pages fix is badly needed, as that
causes severe fragmentation in XFS for the exact workloads it fixes
the severe fragmentation in ext4....


Dave Chinner

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