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scsi: smartpqi: add no_write_same for logical volumes 

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@microsemi.com>
Reviewed-by: Murthy Bhat <murthy.bhat@microsemi.com>
Reviewed-by: Mahesh Rajashekhara <mahesh.rajashekhara@microsemi.com>
Reviewed-by: Justin Lindley <justin.lindley@microsemi.com>
Reviewed-by: Scott Benesh <scott.benesh@microsemi.com>
Reviewed-by: Scott Teel <scott.teel@microsemi.com>
Reviewed-by: Kevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: Dave Carroll <david.carroll@microsemi.com>
Signed-off-by: Don Brace <don.brace@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Dave Carroll 2018-12-07 16:28:23 -06:00 committed by Martin K. Petersen
parent 3406384b76
commit b6e2ef67ed
1 changed files with 7 additions and 0 deletions
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7
drivers/scsi/smartpqi/smartpqi_init.c
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@ -176,6 +176,11 @@ static inline void pqi_scsi_done(struct scsi_cmnd *scmd)
scmd->scsi_done(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) static inline bool pqi_scsi3addr_equal(u8 *scsi3addr1, u8 *scsi3addr2)
{ {
return memcmp(scsi3addr1, scsi3addr2, 8) == 0; return memcmp(scsi3addr1, scsi3addr2, 8) == 0;
@ -5326,6 +5331,8 @@ static int pqi_slave_alloc(struct scsi_device *sdev)
scsi_change_queue_depth(sdev, scsi_change_queue_depth(sdev,
device->advertised_queue_depth); 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); spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);