[PATCH 2/5] xfs: use xfs_ilock_map_shared in xfs_qm_dqtobp

[Ben Myers]

On Thu, Dec 05, 2013 at 07:58:32AM -0800, Christoph Hellwig wrote:
> We might not have read in the extent list at this point, so make sure we
> take the ilock exclusively if we have to do so.
> 
> Signed-off-by: Christoph Hellwig <hch at lst.de>

Reviewed-by: Ben Myers <bpm at sgi.com>