diff --git a/migration/ram.c b/migration/ram.c
index f78e9912cd..b5d03f85ab 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -3408,6 +3408,18 @@ static ram_addr_t host_page_offset_from_ram_block_offset(RAMBlock *block,
     return ((uintptr_t)block->host + offset) & (block->page_size - 1);
 }
 
+void colo_record_bitmap(RAMBlock *block, ram_addr_t *normal, uint32_t pages)
+{
+    qemu_mutex_lock(&ram_state->bitmap_mutex);
+    for (int i = 0; i < pages; i++) {
+        ram_addr_t offset = normal[i];
+        ram_state->migration_dirty_pages += !test_and_set_bit(
+                                                offset >> TARGET_PAGE_BITS,
+                                                block->bmap);
+    }
+    qemu_mutex_unlock(&ram_state->bitmap_mutex);
+}
+
 static inline void *colo_cache_from_block_offset(RAMBlock *block,
                              ram_addr_t offset, bool record_bitmap)
 {
@@ -3425,9 +3437,8 @@ static inline void *colo_cache_from_block_offset(RAMBlock *block,
     * It help us to decide which pages in ram cache should be flushed
     * into VM's RAM later.
     */
-    if (record_bitmap &&
-        !test_and_set_bit(offset >> TARGET_PAGE_BITS, block->bmap)) {
-        ram_state->migration_dirty_pages++;
+    if (record_bitmap) {
+        colo_record_bitmap(block, &offset, 1);
     }
     return block->colo_cache + offset;
 }
diff --git a/migration/ram.h b/migration/ram.h
index 6fffbeb5f1..ea1f3c25b5 100644
--- a/migration/ram.h
+++ b/migration/ram.h
@@ -82,6 +82,7 @@ int colo_init_ram_cache(void);
 void colo_flush_ram_cache(void);
 void colo_release_ram_cache(void);
 void colo_incoming_start_dirty_log(void);
+void colo_record_bitmap(RAMBlock *block, ram_addr_t *normal, uint32_t pages);
 
 /* Background snapshot */
 bool ram_write_tracking_available(void);