xfs: remove xfs_bunmapi_cow

Since no one uses it anymore.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>

fs/xfs/libxfs/xfs_bmap.c

@@ -5414,28 +5414,6 @@ xfs_bmap_del_extent(
 	return error;
 }
 
-/* Remove an extent from the CoW fork.  Similar to xfs_bmap_del_extent. */
-int
-xfs_bunmapi_cow(
-	struct xfs_inode		*ip,
-	struct xfs_bmbt_irec		*del)
-{
-	struct xfs_bmbt_rec_host	*ep;
-	struct xfs_bmbt_irec		got;
-	struct xfs_bmbt_irec		new;
-	int				eof;
-	xfs_extnum_t			eidx;
-
-	ep = xfs_bmap_search_extents(ip, del->br_startoff, XFS_COW_FORK, &eof,
-				&eidx, &got, &new);
-	ASSERT(ep);
-	if (isnullstartblock(got.br_startblock))
-		xfs_bmap_del_extent_delay(ip, XFS_COW_FORK, &eidx, &got, del);
-	else
-		xfs_bmap_del_extent_cow(ip, &eidx, &got, del);
-	return 0;
-}
-
 /*
  * Unmap (remove) blocks from a file.
  * If nexts is nonzero then the number of extents to remove is limited to

fs/xfs/libxfs/xfs_bmap.h

@@ -223,7 +223,6 @@ int	xfs_bunmapi(struct xfs_trans *tp, struct xfs_inode *ip,
 		xfs_fileoff_t bno, xfs_filblks_t len, int flags,
 		xfs_extnum_t nexts, xfs_fsblock_t *firstblock,
 		struct xfs_defer_ops *dfops, int *done);
-int	xfs_bunmapi_cow(struct xfs_inode *ip, struct xfs_bmbt_irec *del);
 int	xfs_bmap_del_extent_delay(struct xfs_inode *ip, int whichfork,
 		xfs_extnum_t *idx, struct xfs_bmbt_irec *got,
 		struct xfs_bmbt_irec *del);