multifd: Protect multifd_send_sync_main() calls
We only need to do that on the ram_save_iterate() call on sending and
on destination when we get a RAM_SAVE_FLAG_EOS.
In setup() and complete() we need to synch in both new and old cases,
so don't add a check there.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Acked-by: Peter Xu <peterx@redhat.com>
---
Remove the wrappers that we take out on patch 5.
diff --git a/migration/ram.c b/migration/ram.c
index 01356f6..1e2414d 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -3394,9 +3394,11 @@
out:
if (ret >= 0
&& migration_is_setup_or_active(migrate_get_current()->state)) {
- ret = multifd_send_sync_main(rs->pss[RAM_CHANNEL_PRECOPY].pss_channel);
- if (ret < 0) {
- return ret;
+ if (migrate_multifd_flush_after_each_section()) {
+ ret = multifd_send_sync_main(rs->pss[RAM_CHANNEL_PRECOPY].pss_channel);
+ if (ret < 0) {
+ return ret;
+ }
}
qemu_put_be64(f, RAM_SAVE_FLAG_EOS);
@@ -4153,7 +4155,9 @@
case RAM_SAVE_FLAG_EOS:
/* normal exit */
- multifd_recv_sync_main();
+ if (migrate_multifd_flush_after_each_section()) {
+ multifd_recv_sync_main();
+ }
break;
default:
error_report("Unknown combination of migration flags: 0x%x"
@@ -4424,7 +4428,9 @@
break;
case RAM_SAVE_FLAG_EOS:
/* normal exit */
- multifd_recv_sync_main();
+ if (migrate_multifd_flush_after_each_section()) {
+ multifd_recv_sync_main();
+ }
break;
default:
if (flags & RAM_SAVE_FLAG_HOOK) {
