files: Outline collect_used_fd() from header

Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

criu/files.c

@@ -111,6 +111,18 @@ struct fdinfo_list_entry *find_used_fd(struct list_head *head, int fd)
 	return NULL;
 }
 
+void collect_used_fd(struct fdinfo_list_entry *new_fle, struct rst_info *ri)
+{
+	struct fdinfo_list_entry *fle;
+
+	list_for_each_entry(fle, &ri->used, used_list) {
+		if (new_fle->fe->fd < fle->fe->fd)
+			break;
+	}
+
+	list_add_tail(&new_fle->used_list, &fle->used_list);
+}
+
 unsigned int find_unused_fd(struct list_head *head, int hint_fd)
 {
 	struct fdinfo_list_entry *fle;

criu/include/files.h

@@ -110,17 +110,7 @@ struct file_desc_ops {
 	char *			(*name)(struct file_desc *, char *b, size_t s);
 };
 
-static inline void collect_used_fd(struct fdinfo_list_entry *new_fle, struct rst_info *ri)
-{
-	struct fdinfo_list_entry *fle;
-
-	list_for_each_entry(fle, &ri->used, used_list) {
-		if (new_fle->fe->fd < fle->fe->fd)
-			break;
-	}
-
-	list_add_tail(&new_fle->used_list, &fle->used_list);
-}
+extern void collect_used_fd(struct fdinfo_list_entry *new_fle, struct rst_info *ri);
 
 static inline void collect_gen_fd(struct fdinfo_list_entry *fle, struct rst_info *ri)
 {