migration: Block migration comment or code is wrong

And it appears that what is wrong is the code. During bulk stage we
need to make sure that some block is dirty, but no games with
max_size at all.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>

diff --git a/migration/block.c b/migration/block.c
index 3577c815a947b62286c635d45f108fdfec2e470e..4347da1526a4e333fa2ba352674a530c6996d213 100644 (file)
--- a/migration/block.c
+++ b/migration/block.c
@@ -880,8 +880,8 @@ static void block_save_pending(QEMUFile *f, void *opaque, uint64_t max_size,
     blk_mig_unlock();
 
     /* Report at least one block pending during bulk phase */
-    if (pending <= max_size && !block_mig_state.bulk_completed) {
-        pending = max_size + BLK_MIG_BLOCK_SIZE;
+    if (!pending && !block_mig_state.bulk_completed) {
+        pending = BLK_MIG_BLOCK_SIZE;
     }
 
     trace_migration_block_save_pending(pending);