Patchwork [28/35] migration: Only go to the iterate stage if there is anything to send

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Submitter Juan Quintela
Date Dec. 11, 2012, 12:47 p.m.
Message ID <1355230031-28233-29-git-send-email-quintela@redhat.com>
Download mbox | patch
Permalink /patch/205237/
State New
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Juan Quintela - Dec. 11, 2012, 12:47 p.m.
Signed-off-by: Orit Wasserman <owasserm@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
---
 migration.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Patch

diff --git a/migration.c b/migration.c
index 7a4a6f0..216356d 100644
--- a/migration.c
+++ b/migration.c
@@ -709,7 +709,7 @@  static void *buffered_file_thread(void *opaque)
             DPRINTF("iterate\n");
             pending_size = qemu_savevm_state_pending(m->file, max_size);
             DPRINTF("pending size %lu max %lu\n", pending_size, max_size);
-            if (pending_size >= max_size) {
+            if (pending_size && pending_size >= max_size) {
                 ret = qemu_savevm_state_iterate(m->file);
                 if (ret < 0) {
                     qemu_mutex_unlock_iothread();