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

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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@xxxxxxxxxxxxx

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