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#ifndef _LINUX_BLKDEV_H
#define _LINUX_BLKDEV_H
#include <linux/major.h>
#include <linux/sched.h>
#include <linux/genhd.h>
#include <linux/list.h>
#include <asm/io.h>
/*
* Default nr free requests per queue, ll_rw_blk will scale it down
* according to available RAM at init time
*/
#define QUEUE_NR_REQUESTS 8192
struct sec_size {
unsigned block_size;
unsigned block_size_bits;
};
/*
* Used to indicate the default queue for drivers that don't bother
* to implement multiple queues. We have this access macro here
* so as to eliminate the need for each and every block device
* driver to know about the internal structure of blk_dev[].
*/
#define MAX_SEGMENTS 128
#define MAX_SECTORS 255
#define PageAlignSize(size) (((size) + PAGE_SIZE -1) & PAGE_MASK)
#endif