#include <asm/scatterlist.h>
+struct scsi_ioctl_command;
+
struct request_queue;
typedef struct request_queue request_queue_t;
struct elevator_queue;
extern int blk_remove_plug(request_queue_t *);
extern void blk_recount_segments(request_queue_t *, struct bio *);
extern int scsi_cmd_ioctl(struct file *, struct gendisk *, unsigned int, void __user *);
+extern int sg_scsi_ioctl(struct file *, struct request_queue *,
+ struct gendisk *, struct scsi_ioctl_command __user *);
extern void blk_start_queue(request_queue_t *q);
extern void blk_stop_queue(request_queue_t *q);
extern void blk_sync_queue(struct request_queue *q);