[XFS] kill shouty XFS_ITOV_NULL macro

Replace XFS_ITOV_NULL() with the new VFS_I() inline.

SGI-PV: 981498

SGI-Modid: xfs-linux-melb:xfs-kern:31722a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Niv Sardi <xaiki@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index bedc661..46cecba 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -1077,7 +1077,7 @@
 	}
 	ASSERT(ip != NULL);
 
-	vp = XFS_ITOV(ip);
+	vp = VFS_I(ip);
 	ip->i_d.di_mode = (__uint16_t)mode;
 	ip->i_d.di_onlink = 0;
 	ip->i_d.di_nlink = nlink;
@@ -3480,7 +3480,7 @@
 			continue;
 		}
 
-		vp = XFS_ITOV_NULL(ip);
+		vp = VFS_I(ip);
 		if (!vp) {
 			XFS_MOUNT_IUNLOCK(mp);
 			xfs_finish_reclaim(ip, 0, XFS_IFLUSH_ASYNC);