[SCSI] sd: Move scsi_disk() accessor function to sd.h

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/scsi/sd.h b/drivers/scsi/sd.h
index 4f032d48cb6e..03a3d45cfa42 100644
--- a/drivers/scsi/sd.h
+++ b/drivers/scsi/sd.h
@@ -48,6 +48,11 @@ struct scsi_disk {
 };
 #define to_scsi_disk(obj) container_of(obj,struct scsi_disk,dev)
 
+static inline struct scsi_disk *scsi_disk(struct gendisk *disk)
+{
+        return container_of(disk->private_data, struct scsi_disk, driver);
+}
+
 #define sd_printk(prefix, sdsk, fmt, a...)                              \
         (sdsk)->disk ?                                                  \
         sdev_printk(prefix, (sdsk)->device, "[%s] " fmt,                \