Commit 851cde99 authored by Hannes Reinecke's avatar Hannes Reinecke Committed by Martin K. Petersen
Browse files

scsi_dh_alua: Add new blacklist flag 'BLIST_SYNC_ALUA' 



Add a new blacklist flag BLIST_SYNC_ALUA to instruct the
alua device handler to use synchronous command submission
for ALUA commands.

Reviewed-by: default avatarBart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarHannes Reinecke <hare@suse.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 00642a1b

drivers/scsi/device_handler/scsi_dh_alua.c

+2 −0
Original line number Diff line number Diff line
@@ -366,6 +366,8 @@ static int alua_check_vpd(struct scsi_device *sdev, struct alua_dh_data *h, 
		/* port group has changed. Update to new port group */

		rcu_assign_pointer(h->pg, pg);

	}

	if (sdev->synchronous_alua)

		pg->flags |= ALUA_SYNC_STPG;

	alua_rtpg_queue(h->pg, sdev, NULL);

	spin_unlock(&h->pg_lock);

drivers/scsi/scsi_devinfo.c

+2 −0
Original line number Diff line number Diff line
@@ -220,6 +220,8 @@ static struct { 
	{"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},

	{"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},

	{"NEC", "iStorage", NULL, BLIST_REPORTLUN2},

	{"NETAPP", "LUN C-Mode", NULL, BLIST_SYNC_ALUA},

	{"NETAPP", "INF-01-00", NULL, BLIST_SYNC_ALUA},

	{"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},

	{"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},

	{"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},

drivers/scsi/scsi_scan.c

+3 −0
Original line number Diff line number Diff line
@@ -964,6 +964,9 @@ static int scsi_add_lun(struct scsi_device *sdev, unsigned char *inq_result, 
	if (*bflags & BLIST_NO_DIF)

		sdev->no_dif = 1;



	if (*bflags & BLIST_SYNC_ALUA)

		sdev->synchronous_alua = 1;



	sdev->eh_timeout = SCSI_DEFAULT_EH_TIMEOUT;



	if (*bflags & BLIST_TRY_VPD_PAGES)

include/scsi/scsi_device.h

+1 −0
Original line number Diff line number Diff line
@@ -176,6 +176,7 @@ struct scsi_device { 
	unsigned no_dif:1;	/* T10 PI (DIF) should be disabled */

	unsigned broken_fua:1;		/* Don't set FUA bit */

	unsigned lun_in_cdb:1;		/* Store LUN bits in CDB[1] */

	unsigned synchronous_alua:1;	/* Synchronous ALUA commands */



	atomic_t disk_events_disable_depth; /* disable depth for disk events */

include/scsi/scsi_devinfo.h

+1 −0
Original line number Diff line number Diff line
@@ -37,5 +37,6 @@ 
#define BLIST_TRY_VPD_PAGES	0x10000000 /* Attempt to read VPD pages */

#define BLIST_NO_RSOC		0x20000000 /* don't try to issue RSOC */

#define BLIST_MAX_1024		0x40000000 /* maximum 1024 sector cdb length */

#define BLIST_SYNC_ALUA		0x80000000 /* Synchronous ALUA commands */



#endif

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