From patchwork Wed Mar 15 10:35:42 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Rutland X-Patchwork-Id: 95331 Delivered-To: patch@linaro.org Received: by 10.140.89.134 with SMTP id v6csp259907qgd; Wed, 15 Mar 2017 03:36:04 -0700 (PDT) X-Received: by 10.84.178.195 with SMTP id z61mr3648841plb.139.1489574164452; Wed, 15 Mar 2017 03:36:04 -0700 (PDT) Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id w19si1214156pfa.377.2017.03.15.03.36.04; Wed, 15 Mar 2017 03:36:04 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753257AbdCOKgD (ORCPT + 25 others); Wed, 15 Mar 2017 06:36:03 -0400 Received: from foss.arm.com ([217.140.101.70]:45018 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751842AbdCOKgB (ORCPT ); Wed, 15 Mar 2017 06:36:01 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 159652B; Wed, 15 Mar 2017 03:36:00 -0700 (PDT) Received: from leverpostej.cambridge.arm.com (usa-sjc-imap-foss1.foss.arm.com [10.72.51.249]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id A0B063F220; Wed, 15 Mar 2017 03:35:58 -0700 (PDT) From: Mark Rutland To: linux-kernel@vger.kernel.org Cc: Mark Rutland , Trond Myklebust , Anna Schumaker , "J. Bruce Fields" , Jeff Layton , "David S. Miller" , linux-nfs@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH] SUNRPC: fix include for cmpxhg_relaxed() Date: Wed, 15 Mar 2017 10:35:42 +0000 Message-Id: <1489574142-20856-1-git-send-email-mark.rutland@arm.com> X-Mailer: git-send-email 1.9.1 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Currently net/sunrpc/xprtmultipath.c is the only file outside of arch/ headers and asm-generic/ headers to include , apparently for the use of cmpxchg_relaxed(). However, many architectures do not provide cmpxchg_relaxed() in their , and it is necessary to include to get this definition, as noted in Documentation/core-api/atomic_ops.rst: If someone wants to use xchg(), cmpxchg() and their variants, linux/atomic.h should be included rather than asm/cmpxchg.h, unless the code is in arch/* and can take care of itself. Evidently we're getting the right header this via some transitive include today, but this isn't something we can/should rely upon, especially with ongoing rework of the atomic headers for KASAN instrumentation. Let's fix the code to include , avoiding fragility. Signed-off-by: Mark Rutland Cc: Trond Myklebust Cc: Anna Schumaker Cc: J. Bruce Fields Cc: Jeff Layton Cc: David S. Miller Cc: linux-nfs@vger.kernel.org Cc: netdev@vger.kernel.org --- net/sunrpc/xprtmultipath.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) -- 1.9.1 diff --git a/net/sunrpc/xprtmultipath.c b/net/sunrpc/xprtmultipath.c index ae92a9e..3b1e856 100644 --- a/net/sunrpc/xprtmultipath.c +++ b/net/sunrpc/xprtmultipath.c @@ -12,7 +12,7 @@ #include #include #include -#include +#include #include #include #include