Received: by 2002:a25:8b91:0:0:0:0:0 with SMTP id j17csp220581ybl; Tue, 7 Jan 2020 17:41:03 -0800 (PST) X-Google-Smtp-Source: APXvYqyihIyYGLBfcVqTx4eTJQehcpx133rCJvZJEs/k8aUfw+QmWjMvrWZqbaBrH5yLcXA2rE/T X-Received: by 2002:aca:568f:: with SMTP id k137mr1200138oib.63.1578447663164; Tue, 07 Jan 2020 17:41:03 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1578447663; cv=none; d=google.com; s=arc-20160816; b=KV+6DwqkGuGgUtI054sLxnUzPquhQHTnU+JC7lF8P52NLeGxP+Q4/n4oyRoOj+GQuM PXA/6WrGdh6bkCZLuxWHfjO6C3IE8i4xIYRBUKgDlHrds/Y2RZFJhBMHI8iMxB/n/ZKE Fst2Z+sHQvEppMWFrznXncNdafCt0EmSlVgS0g5JRdu/RmOdgMt5lC0qAEeaB5aIqgvB 81BHdraIiQd0kO0m/vYUh6QQtcrHvYwEDH+F8rIbG3c3iodBSdIxSmXUnEpPQgm1SIOf wyRX20uEGRp/cryBW3rhtPjsJID7s2oQli6u2AQVBadE1CJNfWTEVUGQ2wpuUcTGodm+ a4Mw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:references:in-reply-to:message-id:date :subject:cc:to:from; bh=e8n00SzYbunU3XpsIx9o7Wp8bKRn/cHr9A8w/z5L3Y0=; b=dmYMRLj+KOEI9PrcV/4km8ICInBrYbOldR09/bs9ZpKhGx+Nlt9GT0F92CTsDr3Oex ZXJlCLVjQRpQPRoHhJMU4TjEI8M4PoOz8FqodfRxeGBgdR2DuCNZj+q+MF4GrBtNZTsG b3giqosryQd9sL3ynOeX9kGOn39ru32IlvKHFR1yVs51uBlGZBRy2R/Uny1qIH3078lA 9OWahwWUdrJlUt31d6qVBp3BkomXYe04G0H7NQmYj3zsSH1WIyHJhwW6THssySgNz4xL HtEpBxY/Er5D3sOjvgYRgFFs28+D14rm183uvcptDRj9HF07H4r7LxJFGccNo6qqg96E bGqw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id e190si1025396oib.113.2020.01.07.17.40.51; Tue, 07 Jan 2020 17:41:03 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726964AbgAHBkA (ORCPT + 99 others); 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