@@ -652,6 +652,7 @@ static int block_save_iterate(QEMUFile *f, void *opaque)
{
int ret;
int64_t last_ftell = qemu_ftell(f);
+ int64_t delta_ftell;
DPRINTF("Enter save live iterate submitted %d transferred %d\n",
block_mig_state.submitted, block_mig_state.transferred);
@@ -701,7 +702,14 @@ static int block_save_iterate(QEMUFile *f, void *opaque)
}
qemu_put_be64(f, BLK_MIG_FLAG_EOS);
- return qemu_ftell(f) - last_ftell;
+ delta_ftell = qemu_ftell(f) - last_ftell;
+ if (delta_ftell > 0) {
+ return 1;
+ } else if (delta_ftell < 0) {
+ return -1;
+ } else {
+ return 0;
+ }
}
/* Called with iothread lock taken. */