From fb8ec18c316d869271137c97320dbfd2def56569 Mon Sep 17 00:00:00 2001
From: Jens Axboe
Date: Mon, 2 Feb 2009 08:42:32 +0100
Subject: block: fix oops in blk_queue_io_stat()

Some initial probe requests don't have disk->queue mapped yet, so we
can't rely on a non-NULL queue in blk_queue_io_stat(). Wrap it in
blk_do_io_stat().

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
---
 block/blk.h | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'block/blk.h')

diff --git a/block/blk.h b/block/blk.h
index 6e1ed40534e9..0dce92c37496 100644
--- a/block/blk.h
+++ b/block/blk.h
@@ -108,4 +108,12 @@ static inline int blk_cpu_to_group(int cpu)
 #endif
 }
 
+static inline int blk_do_io_stat(struct request_queue *q)
+{
+	if (q)
+		return blk_queue_io_stat(q);
+
+	return 0;
+}
+
 #endif
-- 
cgit v1.2.3-55-g7522