From nobody Thu Dec 18 17:50:18 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1520018017389919.1511344442299; Fri, 2 Mar 2018 11:13:37 -0800 (PST) Received: from localhost ([::1]:36970 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1erq7c-0000Tb-Hz for importer@patchew.org; Fri, 02 Mar 2018 14:13:36 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:53175) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1erpqn-0001xZ-9K for qemu-devel@nongnu.org; Fri, 02 Mar 2018 13:56:14 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1erpqk-0003Kv-1G for qemu-devel@nongnu.org; Fri, 02 Mar 2018 13:56:13 -0500 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:47296 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 1erpqh-0003Ib-T6; Fri, 02 Mar 2018 13:56:07 -0500 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 658F77B4AD; Fri, 2 Mar 2018 18:56:07 +0000 (UTC) Received: from localhost.localdomain.com (ovpn-117-66.ams2.redhat.com [10.36.117.66]) by smtp.corp.redhat.com (Postfix) with ESMTP id 44E43AB58B; Fri, 2 Mar 2018 18:56:06 +0000 (UTC) From: Kevin Wolf To: qemu-block@nongnu.org Date: Fri, 2 Mar 2018 19:54:43 +0100 Message-Id: <20180302185448.6314-33-kwolf@redhat.com> In-Reply-To: <20180302185448.6314-1-kwolf@redhat.com> References: <20180302185448.6314-1-kwolf@redhat.com> MIME-Version: 1.0 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 [10.11.55.1]); Fri, 02 Mar 2018 18:56:07 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Fri, 02 Mar 2018 18:56:07 +0000 (UTC) for IP:'10.11.54.5' DOMAIN:'int-mx05.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'kwolf@redhat.com' RCPT:'' Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PULL 32/37] qcow2: make qcow2_co_create2() a coroutine_fn 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: kwolf@redhat.com, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Type: text/plain; charset="utf-8" From: Stefan Hajnoczi qcow2_create2() calls qemu_co_mutex_lock(). Only a coroutine_fn may call another coroutine_fn. In fact, qcow2_create2 is always called from coroutine context. Rename the function to add the "co" moniker and add coroutine_fn. Reported-by: Marc-Andr=C3=A9 Lureau Signed-off-by: Stefan Hajnoczi Message-Id: <20170705102231.20711-3-stefanha@redhat.com> Signed-off-by: Paolo Bonzini Reviewed-by: Eric Blake Signed-off-by: Kevin Wolf --- block/qcow2.c | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) diff --git a/block/qcow2.c b/block/qcow2.c index 93fb625dcb..7cf3c1518a 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -2725,11 +2725,12 @@ static uint64_t qcow2_opt_get_refcount_bits_del(Qem= uOpts *opts, int version, return refcount_bits; } =20 -static int qcow2_create2(const char *filename, int64_t total_size, - const char *backing_file, const char *backing_for= mat, - int flags, size_t cluster_size, PreallocMode prea= lloc, - QemuOpts *opts, int version, int refcount_order, - const char *encryptfmt, Error **errp) +static int coroutine_fn +qcow2_co_create2(const char *filename, int64_t total_size, + const char *backing_file, const char *backing_format, + int flags, size_t cluster_size, PreallocMode prealloc, + QemuOpts *opts, int version, int refcount_order, + const char *encryptfmt, Error **errp) { QDict *options; =20 @@ -2998,9 +2999,9 @@ static int coroutine_fn qcow2_co_create_opts(const ch= ar *filename, QemuOpts *opt =20 refcount_order =3D ctz32(refcount_bits); =20 - ret =3D qcow2_create2(filename, size, backing_file, backing_fmt, flags, - cluster_size, prealloc, opts, version, refcount_or= der, - encryptfmt, &local_err); + ret =3D qcow2_co_create2(filename, size, backing_file, backing_fmt, fl= ags, + cluster_size, prealloc, opts, version, refcount= _order, + encryptfmt, &local_err); error_propagate(errp, local_err); =20 finish: --=20 2.13.6