From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751163AbaCWSnh (ORCPT ); Sun, 23 Mar 2014 14:43:37 -0400 Received: from mail-pa0-f48.google.com ([209.85.220.48]:55389 "EHLO mail-pa0-f48.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750807AbaCWSng (ORCPT ); Sun, 23 Mar 2014 14:43:36 -0400 From: Monam Agarwal To: bcrl@kvack.org, viro@zeniv.linux.org.uk, linux-aio@kvack.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] fs: Use RCU_INIT_POINTER(x, NULL) in aio.c Date: Mon, 24 Mar 2014 00:12:31 +0530 Message-Id: <1395600151-8911-1-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) The rcu_assign_pointer() ensures that the initialization of a structure is carried out before storing a pointer to that structure. And in the case of the NULL pointer, there is no structure to initialize. So, rcu_assign_pointer(p, NULL) can be safely converted to RCU_INIT_POINTER(p, NULL) Signed-off-by: Monam Agarwal --- fs/aio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/aio.c b/fs/aio.c index 062a5f6..c3d3eb6 100644 --- a/fs/aio.c +++ b/fs/aio.c @@ -775,7 +775,7 @@ void exit_aio(struct mm_struct *mm) do { if (!table || i >= table->nr) { rcu_read_unlock(); - rcu_assign_pointer(mm->ioctx_table, NULL); + RCU_INIT_POINTER(mm->ioctx_table, NULL); if (table) kfree(table); return; -- 1.7.9.5