From efadcbcd2a7db4c528bd6be88dc67ec174160c88 Mon Sep 17 00:00:00 2001
From: Jens Axboe <jens.axboe@oracle.com>
Date: Tue, 19 Feb 2008 10:20:37 +0100
Subject: [PATCH] --- yaml --- r: 85886 b: refs/heads/master c:
 e164094964e6e20fe7fce418e06a9dce952bb7a4 h: refs/heads/master v: v3

---
 [refs]                 |  2 +-
 trunk/block/elevator.c | 15 +++++++++++++++
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 0abc43cb056d..7c62901b1fe2 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: ffc4e7595734cf768fa60cea8a4d545dfef8231a
+refs/heads/master: e164094964e6e20fe7fce418e06a9dce952bb7a4
diff --git a/trunk/block/elevator.c b/trunk/block/elevator.c
index bafbae0344d3..88318c383608 100644
--- a/trunk/block/elevator.c
+++ b/trunk/block/elevator.c
@@ -134,6 +134,21 @@ static struct elevator_type *elevator_get(const char *name)
 	spin_lock(&elv_list_lock);
 
 	e = elevator_find(name);
+	if (!e) {
+		char elv[ELV_NAME_MAX + strlen("-iosched")];
+
+		spin_unlock(&elv_list_lock);
+
+		if (!strcmp(name, "anticipatory"))
+			sprintf(elv, "as-iosched");
+		else
+			sprintf(elv, "%s-iosched", name);
+
+		request_module(elv);
+		spin_lock(&elv_list_lock);
+		e = elevator_find(name);
+	}
+
 	if (e && !try_module_get(e->elevator_owner))
 		e = NULL;