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Merge of 2.6.x-xfs-melb:linux:27933a by kenmcd.

  Merge up to 2.6.20-rc4

struct scsi_cmnd;
struct scsi_lun;
struct Scsi_Host;
struct task_struct;

/* tmp - will replace with SCSI logging stuff */
#define eprintk(fmt, args...)					\
do {								\
	printk("%s(%d) " fmt, __FUNCTION__, __LINE__, ##args);	\
} while (0)

#define dprintk(fmt, args...)
/* #define dprintk eprintk */

extern void scsi_tgt_if_exit(void);
extern int scsi_tgt_if_init(void);

extern int scsi_tgt_uspace_send_cmd(struct scsi_cmnd *cmd, struct scsi_lun *lun,
				    u64 tag);
extern int scsi_tgt_uspace_send_status(struct scsi_cmnd *cmd, u64 tag);
extern int scsi_tgt_kspace_exec(int host_no, u64 tag, int result, u32 len,
				unsigned long uaddr, u8 rw);
extern int scsi_tgt_uspace_send_tsk_mgmt(int host_no, int function, u64 tag,
					 struct scsi_lun *scsilun, void *data);
extern int scsi_tgt_kspace_tsk_mgmt(int host_no, u64 mid, int result);