From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755399AbcFTUIp (ORCPT ); Mon, 20 Jun 2016 16:08:45 -0400 Received: from smtp2.provo.novell.com ([137.65.250.81]:39455 "EHLO smtp2.provo.novell.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933400AbcFTUHx (ORCPT ); Mon, 20 Jun 2016 16:07:53 -0400 From: Davidlohr Bueso To: peterz@infradead.org, mingo@kernel.org Cc: davem@davemloft.net, cw00.choi@samsung.com, dougthompson@xmission.com, bp@alien8.de, mchehab@osg.samsung.com, gregkh@linuxfoundation.org, pfg@sgi.com, jikos@kernel.org, hans.verkuil@cisco.com, awalls@md.metrocast.net, dledford@redhat.com, sean.hefty@intel.com, kys@microsoft.com, heiko.carstens@de.ibm.com, James.Bottomley@HansenPartnership.com, sumit.semwal@linaro.org, schwidefsky@de.ibm.com, linux-kernel@vger.kernel.org, dave@stgolabs.net, Haiyang Zhang , Davidlohr Bueso Subject: [PATCH 09/12] drivers/hv: Employ atomic_fetch_inc() Date: Mon, 20 Jun 2016 13:06:01 -0700 Message-Id: <1466453164-13185-10-git-send-email-dave@stgolabs.net> X-Mailer: git-send-email 2.6.6 In-Reply-To: <1466453164-13185-1-git-send-email-dave@stgolabs.net> References: <1466453164-13185-1-git-send-email-dave@stgolabs.net> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Now that we have fetch_inc() we can stop using inc_return() - 1. These are very similar to the existing OP-RETURN primitives we already have, except they return the value of the atomic variable _before_ modification. Cc: "K. Y. Srinivasan" Cc: Haiyang Zhang Signed-off-by: Davidlohr Bueso --- drivers/hv/channel.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c index 56dd261f7142..6f2421a62947 100644 --- a/drivers/hv/channel.c +++ b/drivers/hv/channel.c @@ -397,8 +397,7 @@ int vmbus_establish_gpadl(struct vmbus_channel *channel, void *kbuffer, unsigned long flags; int ret = 0; - next_gpadl_handle = - (atomic_inc_return(&vmbus_connection.next_gpadl_handle) - 1); + next_gpadl_handle = atomic_fetch_inc(&vmbus_connection.next_gpadl_handle); ret = create_gpadl_header(kbuffer, size, &msginfo, &msgcount); if (ret) -- 2.6.6