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Re: [PATCH 4/5] xfs: use xfs_ilock_map_shared in xfs_attr_get

To: Dave Chinner <david@xxxxxxxxxxxxx>
Subject: Re: [PATCH 4/5] xfs: use xfs_ilock_map_shared in xfs_attr_get
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Thu, 5 Dec 2013 13:10:55 -0800
Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx>, xfs@xxxxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <20131205210557.GF29897@dastard>
References: <20131205155830.620826868@xxxxxxxxxxxxxxxxxxxxxx> <20131205155951.679310054@xxxxxxxxxxxxxxxxxxxxxx> <20131205205910.GD29897@dastard> <20131205210159.GA30318@xxxxxxxxxxxxx> <20131205210557.GF29897@dastard>
User-agent: Mutt/1.5.21 (2010-09-15)
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.

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