From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:37506 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727185AbeKLFdr (ORCPT ); Mon, 12 Nov 2018 00:33:47 -0500 Received: from pps.filterd (m0098396.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id wABJiBhJ090409 for ; Sun, 11 Nov 2018 14:44:21 -0500 Received: from e12.ny.us.ibm.com (e12.ny.us.ibm.com [129.33.205.202]) by mx0a-001b2d01.pphosted.com with ESMTP id 2npd3sa9m4-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Sun, 11 Nov 2018 14:44:21 -0500 Received: from localhost by e12.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Sun, 11 Nov 2018 19:44:20 -0000 From: "Paul E. McKenney" To: linux-kernel@vger.kernel.org Cc: mingo@kernel.org, jiangshanlai@gmail.com, dipankar@in.ibm.com, akpm@linux-foundation.org, mathieu.desnoyers@efficios.com, josh@joshtriplett.org, tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com, fweisbec@gmail.com, oleg@redhat.com, joel@joelfernandes.org, "Paul E. McKenney" , Alexander Viro , linux-fsdevel@vger.kernel.org Subject: [PATCH tip/core/rcu 17/41] fs/file: Replace synchronize_sched() with synchronize_rcu() Date: Sun, 11 Nov 2018 11:43:46 -0800 In-Reply-To: <20181111194104.GA4787@linux.ibm.com> References: <20181111194104.GA4787@linux.ibm.com> Message-Id: <20181111194410.6368-17-paulmck@linux.ibm.com> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: Now that synchronize_rcu() waits for preempt-disable regions of code as well as RCU read-side critical sections, synchronize_sched() can be replaced by synchronize_rcu(). This commit therefore makes this change. Signed-off-by: Paul E. McKenney Cc: Alexander Viro Cc: --- fs/file.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/file.c b/fs/file.c index 7ffd6e9d103d..50304c7525ea 100644 --- a/fs/file.c +++ b/fs/file.c @@ -158,7 +158,7 @@ static int expand_fdtable(struct files_struct *files, unsigned int nr) * or have finished their rcu_read_lock_sched() section. */ if (atomic_read(&files->count) > 1) - synchronize_sched(); + synchronize_rcu(); spin_lock(&files->file_lock); if (!new_fdt) -- 2.17.1