[PATCH 18/24] scsi: sd: add sd_mpath_ioctl()

[John Garry]

Add scsi_driver.mpath_ioctl callback.

Signed-off-by: John Garry <john.g.ga...@oracle.com>
---
 drivers/scsi/sd.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 845d392456549..b807452a4bdc3 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -4070,6 +4070,19 @@ static int sd_format_disk_name(char *prefix, int index, 
char *buf, int buflen)
        return 0;
 }
 
+#ifdef CONFIG_SCSI_MULTIPATH
+static int sd_mpath_ioctl(struct scsi_device *sdp, blk_mode_t mode,
+                   unsigned int cmd, unsigned long arg)
+{
+       struct scsi_disk *sdkp = dev_get_drvdata(&sdp->sdev_gendev);
+       struct gendisk *disk = sdkp->disk;
+       struct block_device *bdev = disk->part0;
+
+       return sd_ioctl(bdev, mode, cmd, arg);
+}
+
+#else /* CONFIG_SCSI_MULTIPATH */
+#endif
 /**
  *     sd_probe - called during driver initialization and whenever a
  *     new scsi device is attached to the system. It is called once
@@ -4522,6 +4535,7 @@ static struct scsi_driver sd_template = {
        #ifdef CONFIG_SCSI_MULTIPATH
        .mpath_start_cmd        = sd_mpath_start_command,
        .mpath_end_cmd          = sd_mpath_end_command,
+       .mpath_ioctl            = sd_mpath_ioctl,
        #endif
        .done                   = sd_done,
        .eh_action              = sd_eh_action,
-- 
2.43.5