From nobody Wed Apr 16 12:22:21 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 1544621947609327.0122536313046; Wed, 12 Dec 2018 05:39:07 -0800 (PST) Received: from localhost ([::1]:44953 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gX4jC-0002Xb-FV for importer@patchew.org; Wed, 12 Dec 2018 08:39:06 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46636) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gX4ZA-0003Ng-6I for qemu-devel@nongnu.org; Wed, 12 Dec 2018 08:28:45 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gX4Z9-0001gr-6k for qemu-devel@nongnu.org; Wed, 12 Dec 2018 08:28:44 -0500 Received: from mx1.redhat.com ([209.132.183.28]:46822) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gX4Z3-0001bj-PG; Wed, 12 Dec 2018 08:28:37 -0500 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 17897C0495A1; Wed, 12 Dec 2018 13:28:37 +0000 (UTC) Received: from linux.fritz.box.com (ovpn-117-245.ams2.redhat.com [10.36.117.245]) by smtp.corp.redhat.com (Postfix) with ESMTP id 05ACD60C44; Wed, 12 Dec 2018 13:28:35 +0000 (UTC) From: Kevin Wolf To: qemu-block@nongnu.org Date: Wed, 12 Dec 2018 14:27:22 +0100 Message-Id: <20181212132735.16080-29-kwolf@redhat.com> In-Reply-To: <20181212132735.16080-1-kwolf@redhat.com> References: <20181212132735.16080-1-kwolf@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.31]); Wed, 12 Dec 2018 13:28:37 +0000 (UTC) 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: 209.132.183.28 Subject: [Qemu-devel] [PULL 28/41] block: Use bdrv_reopen_set_read_only() in commit_start/complete() 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, peter.maydell@linaro.org, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" From: Alberto Garcia This patch replaces the bdrv_reopen() calls that set and remove the BDRV_O_RDWR flag with the new bdrv_reopen_set_read_only() function. Signed-off-by: Alberto Garcia Reviewed-by: Max Reitz Signed-off-by: Kevin Wolf --- block/commit.c | 16 ++++++---------- 1 file changed, 6 insertions(+), 10 deletions(-) diff --git a/block/commit.c b/block/commit.c index a2da5740b0..a53c2d04b0 100644 --- a/block/commit.c +++ b/block/commit.c @@ -38,7 +38,7 @@ typedef struct CommitBlockJob { BlockBackend *base; BlockDriverState *base_bs; BlockdevOnError on_error; - int base_flags; + bool base_read_only; char *backing_file_str; } CommitBlockJob; =20 @@ -124,8 +124,8 @@ static void commit_clean(Job *job) /* restore base open flags here if appropriate (e.g., change the base = back * to r/o). These reopens do not need to be atomic, since we won't abo= rt * even on failure here */ - if (s->base_flags !=3D bdrv_get_flags(s->base_bs)) { - bdrv_reopen(s->base_bs, s->base_flags, NULL); + if (s->base_read_only) { + bdrv_reopen_set_read_only(s->base_bs, true, NULL); } =20 g_free(s->backing_file_str); @@ -264,7 +264,6 @@ void commit_start(const char *job_id, BlockDriverState = *bs, const char *filter_node_name, Error **errp) { CommitBlockJob *s; - int orig_base_flags; BlockDriverState *iter; BlockDriverState *commit_top_bs =3D NULL; Error *local_err =3D NULL; @@ -283,11 +282,9 @@ void commit_start(const char *job_id, BlockDriverState= *bs, } =20 /* convert base to r/w, if necessary */ - orig_base_flags =3D bdrv_get_flags(base); - if (!(orig_base_flags & BDRV_O_RDWR)) { - bdrv_reopen(base, orig_base_flags | BDRV_O_RDWR, &local_err); - if (local_err !=3D NULL) { - error_propagate(errp, local_err); + s->base_read_only =3D bdrv_is_read_only(base); + if (s->base_read_only) { + if (bdrv_reopen_set_read_only(base, false, errp) !=3D 0) { goto fail; } } @@ -363,7 +360,6 @@ void commit_start(const char *job_id, BlockDriverState = *bs, goto fail; } =20 - s->base_flags =3D orig_base_flags; s->backing_file_str =3D g_strdup(backing_file_str); s->on_error =3D on_error; =20 --=20 2.19.2