From bbae71bf9c2fe90dc5642d4cddbbc1994861fd92 Mon Sep 17 00:00:00 2001
From: Martin Schwidefsky <schwidefsky@de.ibm.com>
Date: Mon, 22 Sep 2014 16:34:38 +0200
Subject: [PATCH] s390/rwlock: use the interlocked-access facility 1
 instructions

Make use of the load-and-add, load-and-or and load-and-and instructions
to atomically update the read-write lock without a compare-and-swap loop.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Reading git-format-patch failed