commit ced1c6166ef901a91578d54ff39f46b3e7ae870f
author Pavel Butsykin <pbutsykin@virtuozzo.com> Fri Feb 03 18:23:21 2017 +0300
committer Dr. David Alan Gilbert <dgilbert@redhat.com> Mon Feb 13 17:27:13 2017 +0000
tree 42d4a017224beac9dfb2114b0cba52a2bf9d2960
parent 53f09a1076f5efbba7d751a8005e2fcf008606db

migration: discard non-dirty ram pages after the start of postcopy

After the start of postcopy migration there are some non-dirty pages which have
already been migrated. These pages are no longer needed on the source vm so that
we can free them and it doen't hurt to complete the migration.

Signed-off-by: Pavel Butsykin <pbutsykin@virtuozzo.com>
Message-Id: <20170203152321.19739-4-pbutsykin@virtuozzo.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

migration/migration.c

diff --git a/migration/migration.c b/migration/migration.c
index 68afc07..2a26a20 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -1722,6 +1722,10 @@
      */
     qemu_savevm_send_ping(ms->to_dst_file, 4);
 
+    if (migrate_release_ram()) {
+        ram_postcopy_migrated_memory_release(ms);
+    }
+
     ret = qemu_file_get_error(ms->to_dst_file);
     if (ret) {
         error_report("postcopy_start: Migration stream errored");