From: Dave Chinner <david@fromorbit.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: xfs@oss.sgi.com
Subject: Re: [PATCH 4/5] xfs: use xfs_ilock_map_shared in xfs_attr_get
Date: Fri, 6 Dec 2013 08:17:38 +1100 [thread overview]
Message-ID: <20131205211738.GH29897@dastard> (raw)
In-Reply-To: <20131205211055.GA3209@infradead.org>
On Thu, Dec 05, 2013 at 01:10:55PM -0800, Christoph Hellwig wrote:
> On Fri, Dec 06, 2013 at 08:05:57AM +1100, Dave Chinner wrote:
> > > Haven't really done an in-depth audit, mostly just looking at
> > > where the asserts kick in..
> >
> > Right - I just did a scan with cscope on the users of
> > XFS_ILOCK_SHARED, and those two were the only ones that stuck out
> > that weren't handled correctly....
>
> With MAXPATHLEN at 1024 a symlink is at max 2 extents and thus never in
> btree format, so I don't think we'll need it in readlink. The attr
> cases look real, though.
True, because the data fork will always have space for 3 extents
(#define MINDBTPTRS 3) and so it won't go out of line
regardless of the attribute fork.
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
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next prev parent reply other threads:[~2013-12-05 21:17 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-05 15:58 [PATCH 0/5] extent list locking fixes Christoph Hellwig
2013-12-05 15:58 ` [PATCH 1/5] xfs: take the ilock around xfs_bmapi_read in xfs_zero_remaining_bytes Christoph Hellwig
2013-12-05 19:38 ` Ben Myers
2013-12-05 20:31 ` Dave Chinner
2013-12-05 20:37 ` Ben Myers
2013-12-05 20:40 ` Christoph Hellwig
2013-12-05 15:58 ` [PATCH 2/5] xfs: use xfs_ilock_map_shared in xfs_qm_dqtobp Christoph Hellwig
2013-12-05 19:46 ` Ben Myers
2013-12-05 20:41 ` Dave Chinner
2013-12-05 20:53 ` Christoph Hellwig
2013-12-05 21:03 ` Dave Chinner
2013-12-05 15:58 ` [PATCH 3/5] xfs: use xfs_ilock_map_shared in xfs_qm_dqiterate Christoph Hellwig
2013-12-05 19:48 ` Ben Myers
2013-12-05 20:45 ` Dave Chinner
2013-12-05 15:58 ` [PATCH 4/5] xfs: use xfs_ilock_map_shared in xfs_attr_get Christoph Hellwig
2013-12-05 19:57 ` Ben Myers
2013-12-05 20:59 ` Dave Chinner
2013-12-05 21:01 ` Christoph Hellwig
2013-12-05 21:05 ` Dave Chinner
2013-12-05 21:10 ` Christoph Hellwig
2013-12-05 21:17 ` Dave Chinner [this message]
2013-12-05 15:58 ` [PATCH 5/5] xfs: assert that we hold the ilock for extent map access Christoph Hellwig
2013-12-05 20:11 ` Ben Myers
2013-12-05 21:10 ` Dave Chinner
2013-12-05 21:22 ` Christoph Hellwig
2013-12-05 21:40 ` Dave Chinner
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