multifd: Rename pages_used to normal_pages

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

migration/multifd.c

@@ -262,7 +262,7 @@ static void multifd_send_fill_packet(MultiFDSendParams *p)
 
     packet->flags = cpu_to_be32(p->flags);
     packet->pages_alloc = cpu_to_be32(p->pages->allocated);
-    packet->pages_used = cpu_to_be32(p->normal_num);
+    packet->normal_pages = cpu_to_be32(p->normal_num);
     packet->next_packet_size = cpu_to_be32(p->next_packet_size);
     packet->packet_num = cpu_to_be64(p->packet_num);
 
@@ -316,7 +316,7 @@ static int multifd_recv_unfill_packet(MultiFDRecvParams *p, Error **errp)
         return -1;
     }
 
-    p->normal_num = be32_to_cpu(packet->pages_used);
+    p->normal_num = be32_to_cpu(packet->normal_pages);
     if (p->normal_num > packet->pages_alloc) {
         error_setg(errp, "multifd: received packet "
                    "with %u pages and expected maximum pages are %u",

migration/multifd.h

@@ -44,7 +44,8 @@ typedef struct {
     uint32_t flags;
     /* maximum number of allocated pages */
     uint32_t pages_alloc;
-    uint32_t pages_used;
+    /* non zero pages */
+    uint32_t normal_pages;
     /* size of the next packet that contains pages */
     uint32_t next_packet_size;
     uint64_t packet_num;