535 	struct buffer_page		*head_page;	/* read from head */  member
676 	struct buffer_page		*head_page;  member
2069 				       struct buffer_page *head_page)  in rb_meta_inject_reader_page()
2114 	struct buffer_page *head_page, *orig_head, *orig_reader;  in rb_meta_validate_events()  local
3206 		struct list_head *head_page, *prev_page;  in rb_insert_pages()  local
5721 	struct buffer_page *head_page;  in ring_buffer_iter_empty()  local