xfs: update got in xfs_bmap_shift_update_extent

This way the caller gets the proper updated extent returned in got.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NDarrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com>

fs/xfs/libxfs/xfs_bmap.c

@@ -5591,35 +5591,33 @@ xfs_bmap_shift_update_extent(
 	xfs_fileoff_t		startoff)
 {
 	struct xfs_mount	*mp = ip->i_mount;
-	struct xfs_bmbt_irec	new;
+	struct xfs_bmbt_irec	prev = *got;
 	int			error, i;
 
 	*logflags |= XFS_ILOG_CORE;
 
-	new = *got;
-	new.br_startoff = startoff;
+	got->br_startoff = startoff;
 
 	if (cur) {
-		error = xfs_bmbt_lookup_eq(cur, got, &i);
+		error = xfs_bmbt_lookup_eq(cur, &prev, &i);
 		if (error)
 			return error;
 		XFS_WANT_CORRUPTED_RETURN(mp, i == 1);
 
-		error = xfs_bmbt_update(cur, &new);
+		error = xfs_bmbt_update(cur, got);
 		if (error)
 			return error;
 	} else {
 		*logflags |= XFS_ILOG_DEXT;
 	}
 
-	xfs_iext_update_extent(ip, xfs_bmap_fork_to_state(whichfork), idx,
-			&new);
+	xfs_iext_update_extent(ip, xfs_bmap_fork_to_state(whichfork), idx, got);
 
 	/* update reverse mapping */
-	error = xfs_rmap_unmap_extent(mp, dfops, ip, whichfork, got);
+	error = xfs_rmap_unmap_extent(mp, dfops, ip, whichfork, &prev);
 	if (error)
 		return error;
-	return xfs_rmap_map_extent(mp, dfops, ip, whichfork, &new);
+	return xfs_rmap_map_extent(mp, dfops, ip, whichfork, got);
 }
 
 int