diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c
index ec4b7f2..3aab80a 100644
--- a/block/scsi_ioctl.c
+++ b/block/scsi_ioctl.c
@@ -185,6 +185,7 @@
 	__set_bit(GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL, filter->write_ok);
 	__set_bit(GPCMD_LOAD_UNLOAD, filter->write_ok);
 	__set_bit(GPCMD_SET_STREAMING, filter->write_ok);
+	__set_bit(GPCMD_SET_READ_AHEAD, filter->write_ok);
 }
 EXPORT_SYMBOL_GPL(blk_set_cmd_filter_defaults);