From: Dave Chinner <david@fromorbit.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: Paul Anderson <pha@umich.edu>,
Sean Thomas Caron <scaron@umich.edu>,
xfs@oss.sgi.com
Subject: Re: [PATCH 1/1] xfs: log the inode in ->write_inode calls for kupdate
Date: Wed, 21 Dec 2011 08:19:07 +1100 [thread overview]
Message-ID: <20111220211907.GX23662@dastard> (raw)
In-Reply-To: <20111218154955.GB17626@infradead.org>
On Sun, Dec 18, 2011 at 10:49:55AM -0500, Christoph Hellwig wrote:
> If the writeback code writes back an inode because it has expired we currently
> use the non-blockin ->write_inode path. This means any inode that is pinned
> is skipped. With delayed logging and a workload that has very little log
> traffic otherwise it is very likely that an inode that gets constantly
> written to is always pinned, and thus we keep refusing to write it. The VM
> writeback code at that point redirties it and doesn't try to write it again
> for another 30 seconds. This means under certain scenarious time based
> metadata writeback never happens.
>
> Fix this by calling into xfs_log_inode for kupdate in addition to data
> integrity syncs, and thus transfer the inode to the log ASAP.
Makes sense.
> Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
--
Dave Chinner
david@fromorbit.com
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next prev parent reply other threads:[~2011-12-20 21:19 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20111218154936.GA17626@infradead.org>
2011-12-18 15:49 ` [PATCH 1/1] xfs: log the inode in ->write_inode calls for kupdate Christoph Hellwig
2011-12-20 21:19 ` Dave Chinner [this message]
2011-12-23 15:55 ` Mark Tinguely
2011-12-23 17:58 ` Ben Myers
2011-12-28 21:35 ` Hans-Peter Jansen
2011-12-28 21:39 ` Christoph Hellwig
2011-12-18 15:50 ` [PATCH 2/2] xfs: log all dirty inodes in xfs_fs_sync_fs Christoph Hellwig
2011-12-18 20:03 ` Sean Thomas Caron
2011-12-18 20:09 ` Christoph Hellwig
2011-12-18 22:17 ` Dave Chinner
2011-12-18 22:32 ` Christoph Hellwig
2011-12-20 20:08 ` [PATCH 2/2 v2] " Christoph Hellwig
2011-12-20 21:21 ` Dave Chinner
2011-12-23 15:55 ` Mark Tinguely
2011-12-23 21:47 ` Ben Myers
2011-12-26 12:13 ` Dave Chinner
2011-12-29 15:42 ` Ben Myers
2011-12-29 21:44 ` Dave Chinner
2012-01-03 15:48 ` Mark Tinguely
2011-12-21 17:40 ` sync fixes Christoph Hellwig
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