From: Hannes Reinecke <hare@suse.de>
To: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: James Bottomley <james.bottomley@hansenpartnership.com>,
Christoph Hellwig <hch@lst.de>,
Bart von Assche <bart.vanassche@sandisk.com>,
Ewan Milne <emilne@redhat.com>,
linux-scsi@vger.kernel.org, Hannes Reinecke <hare@suse.de>
Subject: [PATCHv3 16/24] scsi_dh_alua: Add new blacklist flag 'BLIST_SYNC_ALUA'
Date: Wed, 13 Jan 2016 09:09:51 +0100 [thread overview]
Message-ID: <1452672599-9820-17-git-send-email-hare@suse.de> (raw)
In-Reply-To: <1452672599-9820-1-git-send-email-hare@suse.de>
Add a new blacklist flag BLIST_SYNC_ALUA to instruct the
alua device handler to use synchronous command submission
for ALUA commands.
Signed-off-by: Hannes Reinecke <hare@suse.de>
---
drivers/scsi/device_handler/scsi_dh_alua.c | 7 +++++++
include/scsi/scsi_devinfo.h | 1 +
2 files changed, 8 insertions(+)
diff --git a/drivers/scsi/device_handler/scsi_dh_alua.c b/drivers/scsi/device_handler/scsi_dh_alua.c
index 36c515c..f0687ba 100644
--- a/drivers/scsi/device_handler/scsi_dh_alua.c
+++ b/drivers/scsi/device_handler/scsi_dh_alua.c
@@ -27,6 +27,7 @@
#include <scsi/scsi_dbg.h>
#include <scsi/scsi_eh.h>
#include <scsi/scsi_dh.h>
+#include <scsi/scsi_devinfo.h>
#define ALUA_DH_NAME "alua"
#define ALUA_DH_VER "1.3"
@@ -335,6 +336,10 @@ static int alua_check_vpd(struct scsi_device *sdev, struct alua_dh_data *h,
int rel_port = -1, group_id;
struct alua_port_group *pg, *old_pg = NULL;
bool pg_updated = false;
+ unsigned int bflags = scsi_get_device_flags_keyed(sdev,
+ &sdev->inquiry[8],
+ &sdev->inquiry[16],
+ SCSI_DEVINFO_GLOBAL);
group_id = scsi_vpd_tpg_id(sdev, &rel_port);
if (group_id < 0) {
@@ -373,6 +378,8 @@ static int alua_check_vpd(struct scsi_device *sdev, struct alua_dh_data *h,
rcu_assign_pointer(h->pg, pg);
pg_updated = true;
}
+ if (bflags & BLIST_SYNC_ALUA)
+ pg->flags |= ALUA_SYNC_STPG;
alua_rtpg_queue(h->pg, sdev, NULL);
spin_unlock(&h->pg_lock);
diff --git a/include/scsi/scsi_devinfo.h b/include/scsi/scsi_devinfo.h
index aca3c80..dc0cb5f 100644
--- a/include/scsi/scsi_devinfo.h
+++ b/include/scsi/scsi_devinfo.h
@@ -37,6 +37,7 @@
#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 */
/* list of keys for the lists */
enum {
--
1.8.5.6
next prev parent reply other threads:[~2016-01-13 8:10 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-13 8:09 [PATCHv3 00/24] ALUA device handler update, part II Hannes Reinecke
2016-01-13 8:09 ` [PATCHv3 01/24] scsi_dh_alua: Pass buffer as function argument Hannes Reinecke
2016-01-13 8:09 ` [PATCHv3 02/24] scsi_dh_alua: separate out alua_stpg() Hannes Reinecke
2016-01-13 8:09 ` [PATCHv3 03/24] scsi_dh_alua: Make stpg synchronous Hannes Reinecke
2016-01-13 8:09 ` [PATCHv3 04/24] scsi_dh_alua: call alua_rtpg() if stpg fails Hannes Reinecke
2016-01-13 8:09 ` [PATCHv3 05/24] scsi_dh_alua: switch to scsi_execute_req_flags() Hannes Reinecke
2016-01-13 8:09 ` [PATCHv3 06/24] scsi_dh_alua: allocate RTPG buffer separately Hannes Reinecke
2016-01-13 8:09 ` [PATCHv3 07/24] scsi_dh_alua: Use separate alua_port_group structure Hannes Reinecke
2016-01-13 8:09 ` [PATCHv3 08/24] scsi_dh_alua: use unique device id Hannes Reinecke
2016-01-18 17:44 ` Christoph Hellwig
2016-01-13 8:09 ` [PATCHv3 09/24] scsi_dh_alua: simplify alua_initialize() Hannes Reinecke
2016-01-13 8:09 ` [PATCHv3 10/24] revert commit a8e5a2d593cb ("[SCSI] scsi_dh_alua: ALUA handler attach should succeed while TPG is transitioning") Hannes Reinecke
2016-01-13 8:09 ` [PATCHv3 11/24] scsi_dh_alua: move optimize_stpg evaluation Hannes Reinecke
2016-01-13 8:09 ` [PATCHv3 12/24] scsi_dh_alua: remove 'rel_port' from alua_dh_data structure Hannes Reinecke
2016-01-13 8:09 ` [PATCHv3 13/24] scsi_dh_alua: Use workqueue for RTPG Hannes Reinecke
2016-01-13 8:09 ` [PATCHv3 14/24] scsi_dh_alua: Allow workqueue to run synchronously Hannes Reinecke
2016-01-18 17:45 ` Christoph Hellwig
2016-01-13 8:09 ` [PATCHv3 15/24] scsi_devinfo: move scsi_get_device_flags into scsi_devinfo.h Hannes Reinecke
2016-01-18 17:49 ` Christoph Hellwig
2016-01-13 8:09 ` Hannes Reinecke [this message]
2016-01-18 17:50 ` [PATCHv3 16/24] scsi_dh_alua: Add new blacklist flag 'BLIST_SYNC_ALUA' Christoph Hellwig
2016-01-13 8:09 ` [PATCHv3 17/24] scsi_dh_alua: Recheck state on unit attention Hannes Reinecke
2016-01-13 8:09 ` [PATCHv3 18/24] scsi_dh_alua: update all port states Hannes Reinecke
2016-01-18 17:51 ` Christoph Hellwig
2016-01-13 8:09 ` [PATCHv3 19/24] scsi_dh_alua: Send TEST UNIT READY to poll for transitioning Hannes Reinecke
2016-01-13 8:09 ` [PATCHv3 20/24] scsi_dh: add 'rescan' callback Hannes Reinecke
2016-01-13 8:09 ` [PATCHv3 21/24] scsi: Add 'access_state' attribute Hannes Reinecke
2016-01-13 8:09 ` [PATCHv3 22/24] scsi_dh_alua: use common definitions for ALUA state Hannes Reinecke
2016-01-13 8:09 ` [PATCHv3 23/24] scsi_dh_alua: update 'access_state' field Hannes Reinecke
2016-01-18 17:52 ` Christoph Hellwig
2016-01-13 8:09 ` [PATCHv3 24/24] scsi_dh_alua: Update version to 2.0 Hannes Reinecke
2016-01-18 17:52 ` Christoph Hellwig
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