xfs: add xfs_da_node verification

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Phil White <pwhite@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>

diff --cc fs/xfs/xfs_attr.c
Simple merge

diff --cc fs/xfs/xfs_attr_leaf.c
Simple merge

diff --cc fs/xfs/xfs_attr_leaf.h
Simple merge

diff --cc fs/xfs/xfs_da_btree.c
Simple merge

diff --cc fs/xfs/xfs_da_btree.h
Simple merge

diff --cc fs/xfs/xfs_dir2_leaf.c
Simple merge

diff --cc fs/xfs/xfs_dir2_priv.h
Simple merge