From: Dave Chinner <david@fromorbit.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: xfs@oss.sgi.com
Subject: Re: [PATCH 3/5] xfs: reduce ilock hold times in xfs_setattr_size
Date: Tue, 27 Mar 2012 09:17:51 +1100 [thread overview]
Message-ID: <20120326221750.GR5091@dastard> (raw)
In-Reply-To: <20120326211603.455167123@bombadil.infradead.org>
On Mon, Mar 26, 2012 at 05:14:24PM -0400, Christoph Hellwig wrote:
> We do not need the ilock for most checks done in the beginning of
> xfs_setattr_size. Replace the long critical section before starting the
> transaction with a smaller one around xfs_zero_eof and an optional one
> inside xfs_qm_dqattach that isn't entered unless using quotas. While
> this isn't a big optimization for xfs_setattr_size itself it will allow
> pushing the ilock into xfs_zero_eof itself later.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
Looks sane to me.
Reviewed-by: Dave Chinner <dchinner@redhat.com>
--
Dave Chinner
david@fromorbit.com
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next prev parent reply other threads:[~2012-03-26 22:18 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-26 21:14 [PATCH 0/5] reduce exclusive ilock hold times Christoph Hellwig
2012-03-26 21:14 ` [PATCH 1/5] xfs: avoid taking the ilock unnessecarily in xfs_qm_dqattach Christoph Hellwig
2012-03-26 22:13 ` Dave Chinner
2012-03-26 21:14 ` [PATCH 2/5] xfs: reduce ilock hold times in xfs_file_aio_write_checks Christoph Hellwig
2012-03-26 22:15 ` Dave Chinner
2012-03-26 21:14 ` [PATCH 3/5] xfs: reduce ilock hold times in xfs_setattr_size Christoph Hellwig
2012-03-26 22:17 ` Dave Chinner [this message]
2012-03-26 21:14 ` [PATCH 4/5] xfs: push the ilock into xfs_zero_eof Christoph Hellwig
2012-03-27 1:15 ` Dave Chinner
2012-03-27 5:48 ` Christoph Hellwig
2012-03-27 6:11 ` Dave Chinner
2012-03-26 21:14 ` [PATCH 5/5] xfs: use shared ilock mode for direct IO writes by default Christoph Hellwig
2012-03-27 1:39 ` Dave Chinner
2012-03-27 6:08 ` [PATCH 0/5] reduce exclusive ilock hold times Dave Chinner
-- strict thread matches above, loose matches on Subject: below --
2012-03-27 14:34 [PATCH 0/5] reduce exclusive ilock hold times V2 Christoph Hellwig
2012-03-27 14:34 ` [PATCH 3/5] xfs: reduce ilock hold times in xfs_setattr_size Christoph Hellwig
2012-04-02 19:26 ` Mark Tinguely
2012-04-19 21:00 ` Ben Myers
2012-04-19 22:43 ` Dave Chinner
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