migration/multifd: Move total_normal_pages accounting

Just like the previous patch, move the accounting for total_normal_pages on
both src/dst sides into the packet fill/unfill procedures.

Reviewed-by: Fabiano Rosas <farosas@suse.de>
Link: https://lore.kernel.org/r/20240202102857.110210-11-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>

migration/multifd.c

@@ -290,6 +290,7 @@ static void multifd_send_fill_packet(MultiFDSendParams *p)
     }
 
     p->packets_sent++;
+    p->total_normal_pages += pages->num;
 }
 
 static int multifd_recv_unfill_packet(MultiFDRecvParams *p, Error **errp)
@@ -338,6 +339,7 @@ static int multifd_recv_unfill_packet(MultiFDRecvParams *p, Error **errp)
     p->next_packet_size = be32_to_cpu(packet->next_packet_size);
     p->packet_num = be64_to_cpu(packet->packet_num);
     p->packets_recved++;
+    p->total_normal_pages += p->normal_num;
 
     if (p->normal_num == 0) {
         return 0;
@@ -720,7 +722,6 @@ static void *multifd_send_thread(void *opaque)
             }
 
             multifd_send_fill_packet(p);
-            p->total_normal_pages += pages->num;
             trace_multifd_send(p->id, packet_num, pages->num, p->flags,
                                p->next_packet_size);
 
@@ -1124,7 +1125,6 @@ static void *multifd_recv_thread(void *opaque)
         p->flags &= ~MULTIFD_FLAG_SYNC;
         trace_multifd_recv(p->id, p->packet_num, p->normal_num, flags,
                            p->next_packet_size);
-        p->total_normal_pages += p->normal_num;
         qemu_mutex_unlock(&p->mutex);
 
         if (p->normal_num) {