target: pass the se_task to the CDB emulation callback

We want to be able to handle all CDBs through it and remove hacks like
always using the first task in a CDB in target_report_luns.

Also rename the callback to ->execute_task to better describe its use.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
diff --git a/drivers/target/target_core_pr.h b/drivers/target/target_core_pr.h
index c9acb11..b97f694 100644
--- a/drivers/target/target_core_pr.h
+++ b/drivers/target/target_core_pr.h
@@ -47,8 +47,8 @@
 
 extern int core_pr_dump_initiator_port(struct t10_pr_registration *,
 			char *, u32);
-extern int target_scsi2_reservation_release(struct se_cmd *cmd);
-extern int target_scsi2_reservation_reserve(struct se_cmd *cmd);
+extern int target_scsi2_reservation_release(struct se_task *task);
+extern int target_scsi2_reservation_reserve(struct se_task *task);
 extern int core_scsi3_alloc_aptpl_registration(
 			struct t10_reservation *, u64,
 			unsigned char *, unsigned char *, u32,
@@ -63,8 +63,8 @@
 extern int core_scsi3_check_cdb_abort_and_preempt(struct list_head *,
 						  struct se_cmd *);
 
-extern int target_scsi3_emulate_pr_in(struct se_cmd *cmd);
-extern int target_scsi3_emulate_pr_out(struct se_cmd *cmd);
+extern int target_scsi3_emulate_pr_in(struct se_task *task);
+extern int target_scsi3_emulate_pr_out(struct se_task *task);
 extern int core_setup_reservations(struct se_device *, int);
 
 #endif /* TARGET_CORE_PR_H */