migration/postcopy: start_postcopy could be true only when migrate_postcopy() return true
There is only one place to set start_postcopy to true,
qmp_migrate_start_postcopy(), which make sure start_postcopy could be
set to true when migrate_postcopy() return true.
So start_postcopy is true implies the other one.
Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>
Message-Id: <20190718083747.5859-1-richardw.yang@linux.intel.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
diff --git a/migration/migration.c b/migration/migration.c
index 7c66da3..8331e62 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -3103,8 +3103,7 @@
if (pending_size && pending_size >= s->threshold_size) {
/* Still a significant amount to transfer */
- if (migrate_postcopy() && !in_postcopy &&
- pend_pre <= s->threshold_size &&
+ if (!in_postcopy && pend_pre <= s->threshold_size &&
atomic_read(&s->start_postcopy)) {
if (postcopy_start(s)) {
error_report("%s: postcopy failed to start", __func__);