[XFS] Make d_maxiosz report the real maximum (INT_MAX) so we dont

incorrectly limit people using this interface to size IO buffers.

SGI-PV: 910890
SGI-Modid: xfs-linux-melb:xfs-kern:24657a
Signed-off-by: Nathan Scott <nathans@sgi.com>

fs/xfs/linux-2.6/xfs_ioctl.c

@@ -751,8 +751,7 @@ xfs_ioctl(
 			mp->m_rtdev_targp : mp->m_ddev_targp;
 
 		da.d_mem = da.d_miniosz = 1 << target->pbr_sshift;
-		/* The size dio will do in one go */
-		da.d_maxiosz = 64 * PAGE_CACHE_SIZE;
+		da.d_maxiosz = INT_MAX;
 
 		if (copy_to_user(arg, &da, sizeof(da)))
 			return -XFS_ERROR(EFAULT);