diff options
| author | Hannes Reinecke <hare@suse.de> | 2016-02-19 09:17:12 +0100 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2016-02-23 21:27:02 -0500 |
| commit | 851cde9909dd8b6fb90fab7f4e815c8f86c85a0d (patch) | |
| tree | 9cf6e3e2a264143c04ca1a3ba9553383e7290402 | |
| parent | 00642a1bff0c2bc72d78d13598e26eb44caa1e85 (diff) | |
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: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| -rw-r--r-- | drivers/scsi/device_handler/scsi_dh_alua.c | 2 | ||||
| -rw-r--r-- | drivers/scsi/scsi_devinfo.c | 2 | ||||
| -rw-r--r-- | drivers/scsi/scsi_scan.c | 3 | ||||
| -rw-r--r-- | include/scsi/scsi_device.h | 1 | ||||
| -rw-r--r-- | include/scsi/scsi_devinfo.h | 1 |
5 files changed, 9 insertions, 0 deletions
diff --git a/drivers/scsi/device_handler/scsi_dh_alua.c b/drivers/scsi/device_handler/scsi_dh_alua.c index a3cb06955adc..fbbe85e750a8 100644 --- a/drivers/scsi/device_handler/scsi_dh_alua.c +++ b/drivers/scsi/device_handler/scsi_dh_alua.c @@ -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); diff --git a/drivers/scsi/scsi_devinfo.c b/drivers/scsi/scsi_devinfo.c index bbfbfd9e5aa3..3408578b08d6 100644 --- a/drivers/scsi/scsi_devinfo.c +++ b/drivers/scsi/scsi_devinfo.c @@ -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}, diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c index 1f02e842b9d1..420239c2861c 100644 --- a/drivers/scsi/scsi_scan.c +++ b/drivers/scsi/scsi_scan.c @@ -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) diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h index 9173ab5a6f72..4af2b240c4d1 100644 --- a/include/scsi/scsi_device.h +++ b/include/scsi/scsi_device.h @@ -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 */ diff --git a/include/scsi/scsi_devinfo.h b/include/scsi/scsi_devinfo.h index 96e3f56519e7..9f750cb63b03 100644 --- a/include/scsi/scsi_devinfo.h +++ b/include/scsi/scsi_devinfo.h @@ -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 |