scsi: use 64-bit LUNs

The SCSI standard defines 64-bit values for LUNs, and large arrays
employing large or hierarchical LUN numbers become more and more
common.

So update the linux SCSI stack to use 64-bit LUN numbers.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Christoph Hellwig <hch@infradead.org>
Reviewed-by: Ewan Milne <emilne@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

3 files changed, 13 insertions, 13 deletions

diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h
index 0a4edfe8af51..91e2e4215ba0 100644
--- a/include/scsi/scsi.h
+++ b/include/scsi/scsi.h
@@ -385,7 +385,7 @@ struct scsi_lun {
 #define SCSI_W_LUN_ACCESS_CONTROL (SCSI_W_LUN_BASE + 2)
 #define SCSI_W_LUN_TARGET_LOG_PAGE (SCSI_W_LUN_BASE + 3)
 
-static inline int scsi_is_wlun(unsigned int lun)
+static inline int scsi_is_wlun(u64 lun)
 {
 	return (lun & 0xff00) == SCSI_W_LUN_BASE;
 }
diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h
index 27ab31017f09..9aa38f7b303b 100644
--- a/include/scsi/scsi_device.h
+++ b/include/scsi/scsi_device.h
@@ -98,8 +98,8 @@ struct scsi_device {
 
 	unsigned long last_queue_ramp_up;	/* last queue ramp up time */
 
-	unsigned int id, lun, channel;
-
+	unsigned int id, channel;
+	u64 lun;
 	unsigned int manufacturer;	/* Manufacturer of device, for using 
 					 * vendor-specific cmd's */
 	unsigned sector_size;	/* size in bytes */
@@ -321,9 +321,9 @@ static inline struct scsi_target *scsi_target(struct scsi_device *sdev)
 	dev_printk(prefix, &(starget)->dev, fmt, ##a)
 
 extern struct scsi_device *__scsi_add_device(struct Scsi_Host *,
-		uint, uint, uint, void *hostdata);
+		uint, uint, u64, void *hostdata);
 extern int scsi_add_device(struct Scsi_Host *host, uint channel,
-			   uint target, uint lun);
+			   uint target, u64 lun);
 extern int scsi_register_device_handler(struct scsi_device_handler *scsi_dh);
 extern void scsi_remove_device(struct scsi_device *);
 extern int scsi_unregister_device_handler(struct scsi_device_handler *scsi_dh);
@@ -332,13 +332,13 @@ void scsi_attach_vpd(struct scsi_device *sdev);
 extern int scsi_device_get(struct scsi_device *);
 extern void scsi_device_put(struct scsi_device *);
 extern struct scsi_device *scsi_device_lookup(struct Scsi_Host *,
-					      uint, uint, uint);
+					      uint, uint, u64);
 extern struct scsi_device *__scsi_device_lookup(struct Scsi_Host *,
-						uint, uint, uint);
+						uint, uint, u64);
 extern struct scsi_device *scsi_device_lookup_by_target(struct scsi_target *,
-							uint);
+							u64);
 extern struct scsi_device *__scsi_device_lookup_by_target(struct scsi_target *,
-							  uint);
+							  u64);
 extern void starget_for_each_device(struct scsi_target *, void *,
 		     void (*fn)(struct scsi_device *, void *));
 extern void __starget_for_each_device(struct scsi_target *, void *,
@@ -411,13 +411,13 @@ extern void scsi_device_resume(struct scsi_device *sdev);
 extern void scsi_target_quiesce(struct scsi_target *);
 extern void scsi_target_resume(struct scsi_target *);
 extern void scsi_scan_target(struct device *parent, unsigned int channel,
-			     unsigned int id, unsigned int lun, int rescan);
+			     unsigned int id, u64 lun, int rescan);
 extern void scsi_target_reap(struct scsi_target *);
 extern void scsi_target_block(struct device *);
 extern void scsi_target_unblock(struct device *, enum scsi_device_state);
 extern void scsi_remove_target(struct device *);
-extern void int_to_scsilun(unsigned int, struct scsi_lun *);
-extern int scsilun_to_int(struct scsi_lun *);
+extern void int_to_scsilun(u64, struct scsi_lun *);
+extern u64 scsilun_to_int(struct scsi_lun *);
 extern const char *scsi_device_state_name(enum scsi_device_state);
 extern int scsi_is_sdev_device(const struct device *);
 extern int scsi_is_target_device(const struct device *);
diff --git a/include/scsi/scsi_transport.h b/include/scsi/scsi_transport.h
index af244f4bba53..81292392adbc 100644
--- a/include/scsi/scsi_transport.h
+++ b/include/scsi/scsi_transport.h
@@ -35,7 +35,7 @@ struct scsi_transport_template {
 	/*
 	 * If set, called from sysfs and legacy procfs rescanning code.
 	 */
-	int (*user_scan)(struct Scsi_Host *, uint, uint, uint);
+	int (*user_scan)(struct Scsi_Host *, uint, uint, u64);
 
 	/* The size of the specific transport attribute structure (a
 	 * space of this size will be left at the end of the