From patchwork Wed Aug 15 03:12:48 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fam Zheng X-Patchwork-Id: 957785 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41qvzl2Qs4z9rxx for ; Wed, 15 Aug 2018 13:27:47 +1000 (AEST) Received: from localhost ([::1]:47153 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fpmTJ-0001vU-0s for incoming@patchwork.ozlabs.org; Tue, 14 Aug 2018 23:27:45 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57058) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fpmFb-0007Jz-Dn for qemu-devel@nongnu.org; Tue, 14 Aug 2018 23:13:36 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fpmFa-0001t2-Mf for qemu-devel@nongnu.org; Tue, 14 Aug 2018 23:13:35 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:35490 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fpmFa-0001qx-F2 for qemu-devel@nongnu.org; Tue, 14 Aug 2018 23:13:34 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 257F5722D0; Wed, 15 Aug 2018 03:13:34 +0000 (UTC) Received: from lemon.usersys.redhat.com (ovpn-12-85.pek2.redhat.com [10.72.12.85]) by smtp.corp.redhat.com (Postfix) with ESMTP id 9BFE3178BC; Wed, 15 Aug 2018 03:13:32 +0000 (UTC) From: Fam Zheng To: qemu-devel@nongnu.org Date: Wed, 15 Aug 2018 11:12:48 +0800 Message-Id: <20180815031248.14908-18-famz@redhat.com> In-Reply-To: <20180815031248.14908-1-famz@redhat.com> References: <20180815031248.14908-1-famz@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Wed, 15 Aug 2018 03:13:34 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Wed, 15 Aug 2018 03:13:34 +0000 (UTC) for IP:'10.11.54.5' DOMAIN:'int-mx05.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'famz@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PULL 17/17] aio-posix: Improve comment around marking node deleted X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Maydell Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" The counter is for qemu_lockcnt_inc/dec sections (read side), qemu_lockcnt_lock/unlock is for the write side. Suggested-by: Paolo Bonzini Signed-off-by: Fam Zheng Message-Id: <20180803063917.30292-1-famz@redhat.com> Signed-off-by: Fam Zheng --- util/aio-posix.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/util/aio-posix.c b/util/aio-posix.c index b5c609b68b..131ba6b4a8 100644 --- a/util/aio-posix.c +++ b/util/aio-posix.c @@ -232,7 +232,7 @@ void aio_set_fd_handler(AioContext *ctx, g_source_remove_poll(&ctx->source, &node->pfd); } - /* If the lock is held, just mark the node as deleted */ + /* If a read is in progress, just mark the node as deleted */ if (qemu_lockcnt_count(&ctx->list_lock)) { node->deleted = 1; node->pfd.revents = 0;