From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750983AbaCVHE7 (ORCPT ); Sat, 22 Mar 2014 03:04:59 -0400 Received: from mail-pd0-f169.google.com ([209.85.192.169]:42013 "EHLO mail-pd0-f169.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750900AbaCVHE4 (ORCPT ); Sat, 22 Mar 2014 03:04:56 -0400 From: Monam Agarwal To: axboe@kernel.dk, linux-kernel@vger.kernel.org Subject: [PATCH] block: Use RCU_INIT_POINTER(x, NULL) in blk-cgroup.c Date: Sat, 22 Mar 2014 12:33:58 +0530 Message-Id: <1395471838-3099-1-git-send-email-monamagarwal123@gmail.com> X-Mailer: git-send-email 1.7.9.5 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch replaces rcu_assign_pointer(x, NULL) with RCU_INIT_POINTER(x, NULL) Since rcu_assign_pointer() is to ensure that the initialization of a structure is carried out before storing a pointer to that structure. So, rcu_assign_pointer(p, NULL) can be safely converted to RCU_INIT_POINTER(p, NULL). Signed-off-by: Monam Agarwal --- block/blk-cgroup.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index 4e491d9..fc62c47 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -337,7 +337,7 @@ static void blkg_destroy(struct blkcg_gq *blkg) * will. Hint assignment itself can race safely. */ if (rcu_dereference_raw(blkcg->blkg_hint) == blkg) - rcu_assign_pointer(blkcg->blkg_hint, NULL); + RCU_INIT_POINTER(blkcg->blkg_hint, NULL); /* * If root blkg is destroyed. Just clear the pointer since root_rl -- 1.7.9.5