From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758506Ab1FFWmG (ORCPT ); Mon, 6 Jun 2011 18:42:06 -0400 Received: from p3plsmtps2ded01.prod.phx3.secureserver.net ([208.109.80.58]:37265 "HELO p3plsmtps2ded01-01.prod.phx3.secureserver.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1758179Ab1FFWfA (ORCPT ); Mon, 6 Jun 2011 18:35:00 -0400 From: "K. Y. Srinivasan" To: gregkh@suse.de, linux-kernel@vger.kernel.org, devel@linuxdriverproject.org, virtualization@lists.osdl.org Cc: "K. Y. Srinivasan" , Haiyang Zhang , Abhishek Kane Subject: [PATCH 27/49] Staging: hv: vmbus: Fix the memory barrier in hv_ringbuffer_read() Date: Mon, 6 Jun 2011 15:49:51 -0700 Message-Id: <1307400613-13234-27-git-send-email-kys@microsoft.com> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1307400613-13234-1-git-send-email-kys@microsoft.com> References: <1307400540-13193-1-git-send-email-kys@microsoft.com> <1307400613-13234-1-git-send-email-kys@microsoft.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Use the correct barrier interface. Signed-off-by: K. Y. Srinivasan Signed-off-by: Haiyang Zhang Signed-off-by: Abhishek Kane --- drivers/staging/hv/ring_buffer.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/staging/hv/ring_buffer.c b/drivers/staging/hv/ring_buffer.c index 3da3330..932af1a 100644 --- a/drivers/staging/hv/ring_buffer.c +++ b/drivers/staging/hv/ring_buffer.c @@ -513,7 +513,7 @@ int hv_ringbuffer_read(struct hv_ring_buffer_info *inring_info, void *buffer, /* Make sure all reads are done before we update the read index since */ /* the writer may start writing to the read area once the read index */ /*is updated */ - mb(); + smp_mb(); /* Update the read index */ hv_set_next_read_location(inring_info, next_read_location); -- 1.7.4.1