[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>

fs/xfs/linux-2.6/xfs_super.c

@@ -400,9 +400,11 @@ linvfs_clear_inode(
 	vp->v_flag &= ~VMODIFIED;
 	VN_UNLOCK(vp, 0);
 
-	VOP_RECLAIM(vp, error);
-	if (error)
-		panic("vn_purge: cannot reclaim");
+	if (vp->v_fbhv) {
+		VOP_RECLAIM(vp, error);
+		if (error)
+			panic("vn_purge: cannot reclaim");
+	}
 
 	ASSERT(vp->v_fbhv == NULL);