From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E981CC33C99 for ; Wed, 8 Jan 2020 01:40:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C3EB820673 for ; Wed, 8 Jan 2020 01:40:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726989AbgAHBkA (ORCPT ); Tue, 7 Jan 2020 20:40:00 -0500 Received: from mx2.suse.de ([195.135.220.15]:52680 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726313AbgAHBkA (ORCPT ); Tue, 7 Jan 2020 20:40:00 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id E6634AE7F; Wed, 8 Jan 2020 01:39:58 +0000 (UTC) From: Davidlohr Bueso To: dave@stgolabs.net Cc: bigeasy@linutronix.de, bristot@redhat.com, jack@suse.com, juri.lelli@redhat.com, linux-kernel@vger.kernel.org, longman@redhat.com, mingo@kernel.org, oleg@redhat.com, peterz@infradead.org, tglx@linutronix.de, will@kernel.org, williams@redhat.com, Davidlohr Bueso Subject: [PATCH] locking/percpu-rwsem: Add might_sleep() for writer locking Date: Tue, 7 Jan 2020 17:33:04 -0800 Message-Id: <20200108013305.7732-1-dave@stgolabs.net> X-Mailer: git-send-email 2.16.4 In-Reply-To: <20191115203906.fbo6t7d2n6xk3saw@linux-p48b> References: <20191115203906.fbo6t7d2n6xk3saw@linux-p48b> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org We are missing this annotation in percpu_down_write(). Correct this. Signed-off-by: Davidlohr Bueso --- Applies against your queue tree. kernel/locking/percpu-rwsem.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/locking/percpu-rwsem.c b/kernel/locking/percpu-rwsem.c index 4cbeeada8d09..08db2abfa00d 100644 --- a/kernel/locking/percpu-rwsem.c +++ b/kernel/locking/percpu-rwsem.c @@ -212,6 +212,7 @@ static bool readers_active_check(struct percpu_rw_semaphore *sem) void percpu_down_write(struct percpu_rw_semaphore *sem) { + might_sleep(); rwsem_acquire(&sem->dep_map, 0, 0, _RET_IP_); /* Notify readers to take the slow path. */ -- 2.16.4