On (Tue) 18 Oct 2016 [20:10:01], zhanghailiang wrote:
> This new communication path will be used for returning messages
> from Secondary side to Primary side.
>
> Signed-off-by: zhanghailiang <zhang.zhanghaili...@huawei.com>
> Signed-off-by: Li Zhijian <lizhij...@cn.fujitsu.com>
> Reviewed-by: Dr. David Alan Gilbert <dgilb...@redhat.com>
Reviewed-by: Amit Shah <amit.s...@redhat.com>
> @@ -63,8 +75,24 @@ void *colo_process_incoming_thread(void *opaque)
> migrate_set_state(&mis->state, MIGRATION_STATUS_ACTIVE,
> MIGRATION_STATUS_COLO);
>
> + mis->to_src_file = qemu_file_get_return_path(mis->from_src_file);
> + if (!mis->to_src_file) {
> + error_report("COLO incoming thread: Open QEMUFile to_src_file
> failed");
> + goto out;
> + }
> + /*
> + * Note: We set the fd to unblocked in migration incoming coroutine,
> + * But here we are in the COLO incoming thread, so it is ok to set the
> + * fd back to blocked.
> + */
> + qemu_file_set_blocking(mis->from_src_file, true);
Why does it need to be blocking?
Amit
