---

yaml --- r: 367410 b: refs/heads/master c: 7a3ad39 h: refs/heads/master v: v3
git-mirror · Apr 11, 2013 · 44266f5 · 44266f5
1 parent ee18b41
commit 44266f5
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Showing 2 changed files with 8 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 93f91dfa732eead8fbc938256b6883a93b847021
+refs/heads/master: 7a3ad3920de780e3da1dacabe3c0abcd5b260655
diff --git a/trunk/drivers/scsi/device_handler/scsi_dh_alua.c b/trunk/drivers/scsi/device_handler/scsi_dh_alua.c
@@ -712,6 +712,10 @@ static int alua_set_params(struct scsi_device *sdev, const char *params)
 	return result;
 }
 
+static uint optimize_stpg;
+module_param(optimize_stpg, uint, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(optimize_stpg, "Allow use of a non-optimized path, rather than sending a STPG, when implicit TPGS is supported (0=No,1=Yes). Default is 0.");
+
 /*
  * alua_activate - activate a path
  * @sdev: device on the path to be activated
@@ -733,6 +737,9 @@ static int alua_activate(struct scsi_device *sdev,
 	if (err != SCSI_DH_OK)
 		goto out;
 
+	if (optimize_stpg)
+		h->flags |= ALUA_OPTIMIZE_STPG;
+
 	if (h->tpgs & TPGS_MODE_EXPLICIT) {
 		switch (h->state) {
 		case TPGS_STATE_NONOPTIMIZED: