From: Dave Carroll <david.carroll@xxxxxxxxxxxxx>
During slave_alloc, for logical volumes include no_write_same into
the scsi_device structure. This will insure that WRITE_SAME will not
be used for LD's.
Reviewed-by: Ajish Koshy <ajish.koshy@xxxxxxxxxxxxx>
Reviewed-by: Murthy Bhat <murthy.bhat@xxxxxxxxxxxxx>
Reviewed-by: Mahesh Rajashekhara <mahesh.rajashekhara@xxxxxxxxxxxxx>
Reviewed-by: Justin Lindley <justin.lindley@xxxxxxxxxxxxx>
Reviewed-by: Scott Benesh <scott.benesh@xxxxxxxxxxxxx>
Reviewed-by: Scott Teel <scott.teel@xxxxxxxxxxxxx>
Reviewed-by: Kevin Barnett <kevin.barnett@xxxxxxxxxxxxx>
Signed-off-by: Dave Carroll <david.carroll@xxxxxxxxxxxxx>
Signed-off-by: Don Brace <don.brace@xxxxxxxxxxxxx>
---
drivers/scsi/smartpqi/smartpqi_init.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c
index db95b1cb6889..8e68dba1c789 100644
--- a/drivers/scsi/smartpqi/smartpqi_init.c
+++ b/drivers/scsi/smartpqi/smartpqi_init.c
@@ -176,6 +176,11 @@ static inline void pqi_scsi_done(struct scsi_cmnd *scmd)
scmd->scsi_done(scmd);
}
+static inline void pqi_disable_write_same(struct scsi_device *sdev)
+{
+ sdev->no_write_same = 1;
+}
+
static inline bool pqi_scsi3addr_equal(u8 *scsi3addr1, u8 *scsi3addr2)
{
return memcmp(scsi3addr1, scsi3addr2, 8) == 0;
@@ -5326,6 +5331,8 @@ static int pqi_slave_alloc(struct scsi_device *sdev)
scsi_change_queue_depth(sdev,
device->advertised_queue_depth);
}
+ if (pqi_is_logical_device(device))
+ pqi_disable_write_same(sdev);
}
spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
