From 281a26cc4cfef23f192024ed9d4fd7e7269325b5 Mon Sep 17 00:00:00 2001
From: Ed Cashin <ecashin@coraid.com>
Date: Mon, 17 Dec 2012 16:03:32 -0800
Subject: [PATCH] --- yaml --- r: 346469 b: refs/heads/master c:
 aa304fdefa568d63c862df7abe55d39811845c7c h: refs/heads/master i:   346467:
 c2ce69d78e54b37e68a97f7034a94dcacfc1f02c v: v3

---
 [refs]                           | 2 +-
 trunk/drivers/block/aoe/aoeblk.c | 9 +++++++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 29fb96958fc7..3469f6507e40 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 4ba9aa7f9819bafb304f09dee90bb1fa40627358
+refs/heads/master: aa304fdefa568d63c862df7abe55d39811845c7c
diff --git a/trunk/drivers/block/aoe/aoeblk.c b/trunk/drivers/block/aoe/aoeblk.c
index 00dfc5008ad4..d5aa3b8c9f33 100644
--- a/trunk/drivers/block/aoe/aoeblk.c
+++ b/trunk/drivers/block/aoe/aoeblk.c
@@ -16,11 +16,18 @@
 #include <linux/netdevice.h>
 #include <linux/mutex.h>
 #include <linux/export.h>
+#include <linux/moduleparam.h>
 #include "aoe.h"
 
 static DEFINE_MUTEX(aoeblk_mutex);
 static struct kmem_cache *buf_pool_cache;
 
+/* GPFS needs a larger value than the default. */
+static int aoe_maxsectors;
+module_param(aoe_maxsectors, int, 0644);
+MODULE_PARM_DESC(aoe_maxsectors,
+	"When nonzero, set the maximum number of sectors per I/O request");
+
 static ssize_t aoedisk_show_state(struct device *dev,
 				  struct device_attribute *attr, char *page)
 {
@@ -248,6 +255,8 @@ aoeblk_gdalloc(void *vp)
 	d->blkq = gd->queue = q;
 	q->queuedata = d;
 	d->gd = gd;
+	if (aoe_maxsectors)
+		blk_queue_max_hw_sectors(q, aoe_maxsectors);
 	gd->major = AOE_MAJOR;
 	gd->first_minor = d->sysminor;
 	gd->fops = &aoe_bdops;