[XFS] Check if there is first behavior before calling VOP_RECLAIM from

linvfs_clear_inode(). The behavior may go away in VOP_INACTIVE. 

SGI-PV: 941000
SGI-Modid: xfs-linux:xfs-kern:197355a

Signed-off-by: Felix Blyakher <felixb@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>