From: Dave Chinner <david@fromorbit.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: xfs@oss.sgi.com
Subject: Re: [PATCH 07/11] xfs: replace i_pin_wait with a bit waitqueue
Date: Wed, 14 Dec 2011 09:21:58 +1100 [thread overview]
Message-ID: <20111213222158.GE3179@dastard> (raw)
In-Reply-To: <20111208155918.662107724@bombadil.infradead.org>
On Thu, Dec 08, 2011 at 10:58:02AM -0500, Christoph Hellwig wrote:
> Replace i_pin_wait, which is only used during synchronous inode flushing
> with a bit waitqueue. This trades off a much smaller inode against
> slightly slower wakeup performance, and saves 12 (32-bit) or 20 (64-bit)
> bytes in the XFS inode.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> Reviewed-by: Alex Elder <aelder@sgi.com>
Looks fine - the pinning code never modifies the i_flags field, so
doesn't require the i_flags_lock anywhere so the concerns i had
about the previous patch are not relevant here...
Reviewed-by: Dave Chinner <dchinner@redhat.com>
--
Dave Chinner
david@fromorbit.com
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next prev parent reply other threads:[~2011-12-13 22:22 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-08 15:57 [PATCH 00/11] inode shrink and misc updates Christoph Hellwig
2011-12-08 15:57 ` [PATCH 01/11] xfs: remove xfs_itruncate_data Christoph Hellwig
2011-12-13 21:23 ` Dave Chinner
2011-12-08 15:57 ` [PATCH 02/11] xfs: cleanup xfs_iomap_eof_align_last_fsb Christoph Hellwig
2011-12-13 21:25 ` Dave Chinner
2011-12-08 15:57 ` [PATCH 03/11] xfs: remove the unused dm_attrs structure Christoph Hellwig
2011-12-08 15:57 ` [PATCH 04/11] xfs: remove the if_ext_max field in struct xfs_ifork Christoph Hellwig
2011-12-13 21:59 ` Dave Chinner
2011-12-08 15:58 ` [PATCH 05/11] xfs: make i_flags an unsigned long Christoph Hellwig
2012-01-13 19:07 ` Ben Myers
2012-01-24 18:03 ` Christoph Hellwig
2011-12-08 15:58 ` [PATCH 06/11] xfs: replace i_flock with a sleeping bitlock Christoph Hellwig
2011-12-13 22:19 ` Dave Chinner
2011-12-18 18:11 ` Christoph Hellwig
2011-12-08 15:58 ` [PATCH 07/11] xfs: replace i_pin_wait with a bit waitqueue Christoph Hellwig
2011-12-13 22:21 ` Dave Chinner [this message]
2011-12-08 15:58 ` [PATCH 08/11] xfs: remove the i_size field in struct xfs_inode Christoph Hellwig
2011-12-13 22:58 ` Dave Chinner
2011-12-08 15:58 ` [PATCH 09/11] xfs: remove the i_new_size " Christoph Hellwig
2011-12-13 23:16 ` Dave Chinner
2011-12-14 13:30 ` Christoph Hellwig
2011-12-08 15:58 ` [PATCH 10/11] xfs: always return with the iolock held from xfs_file_aio_write_checks Christoph Hellwig
2011-12-13 23:20 ` Dave Chinner
2011-12-14 13:27 ` Christoph Hellwig
2011-12-08 15:58 ` [PATCH 11/11] xfs: cleanup xfs_file_aio_write Christoph Hellwig
2011-12-13 23:28 ` Dave Chinner
-- strict thread matches above, loose matches on Subject: below --
2011-12-18 20:00 [PATCH 00/11] inode shrink and misc updates V2 Christoph Hellwig
2011-12-18 20:00 ` [PATCH 07/11] xfs: replace i_pin_wait with a bit waitqueue Christoph Hellwig
2012-01-13 22:42 ` Ben Myers
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