buffer_data_page
#define BUF_PAGE_HDR_SIZE offsetof(struct buffer_data_page, data)
struct buffer_data_page *subbuf;
static int rb_read_data_buffer(struct buffer_data_page *dpage, int tail, int cpu,
static int rb_validate_buffer(struct buffer_data_page *dpage, int cpu)
struct buffer_data_page *data; /* actual data, stored in this page */
struct buffer_data_page *page; /* Actual data page */
static void rb_init_page(struct buffer_data_page *bpage)
static struct buffer_data_page *alloc_cpu_data(int cpu, int order)
struct buffer_data_page *dpage;
static void dump_buffer_page(struct buffer_data_page *bpage,
struct buffer_data_page *bpage;
struct buffer_data_page *free_page;
struct buffer_data_page field;
struct buffer_data_page *bpage = data_page->data;
struct buffer_data_page *bpage;
struct buffer_data_page *rpage = cpu_buffer->reader_page->page;
struct buffer_data_page *old_free_data_page;
struct buffer_data_page *bpage = reader->page;