[XFS] kill xfs_rwlock/xfs_rwunlock

We can just use xfs_ilock/xfs_iunlock instead and get rid of the ugly
bhv_vrwlock_t.

SGI-PV: 976035
SGI-Modid: xfs-linux-melb:xfs-kern:30533a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h
index 1d8a472..110ee83 100644
--- a/fs/xfs/xfs_mount.h
+++ b/fs/xfs/xfs_mount.h
@@ -67,7 +67,7 @@
  */
 
 typedef int	(*xfs_send_data_t)(int, bhv_vnode_t *,
-			xfs_off_t, size_t, int, bhv_vrwlock_t *);
+			xfs_off_t, size_t, int, int *);
 typedef int	(*xfs_send_mmap_t)(struct vm_area_struct *, uint);
 typedef int	(*xfs_send_destroy_t)(bhv_vnode_t *, dm_right_t);
 typedef int	(*xfs_send_namesp_t)(dm_eventtype_t, struct xfs_mount *,