From nobody Mon Feb 9 22:38:06 2026 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.zoho.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; Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 149006698559914.409857008432596; Mon, 20 Mar 2017 20:29:45 -0700 (PDT) Received: from localhost ([::1]:36463 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cqAUS-00032P-HC for importer@patchew.org; Mon, 20 Mar 2017 23:29:44 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:41018) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cqAL0-0003cR-Rw for qemu-devel@nongnu.org; Mon, 20 Mar 2017 23:19:59 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cqAKz-0001YG-RR for qemu-devel@nongnu.org; Mon, 20 Mar 2017 23:19:58 -0400 Received: from mx1.redhat.com ([209.132.183.28]:40192) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1cqAKv-0001WO-Ct; Mon, 20 Mar 2017 23:19:53 -0400 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 6B70C61D06; Tue, 21 Mar 2017 03:19:53 +0000 (UTC) Received: from lemon.redhat.com (ovpn-8-61.pek2.redhat.com [10.72.8.61]) by smtp.corp.redhat.com (Postfix) with ESMTP id C2C0378DD3; Tue, 21 Mar 2017 03:19:39 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 6B70C61D06 Authentication-Results: ext-mx10.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx10.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=famz@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com 6B70C61D06 From: Fam Zheng To: qemu-devel@nongnu.org Date: Tue, 21 Mar 2017 11:16:33 +0800 Message-Id: <20170321031635.22123-15-famz@redhat.com> In-Reply-To: <20170321031635.22123-1-famz@redhat.com> References: <20170321031635.22123-1-famz@redhat.com> 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 [10.5.110.39]); Tue, 21 Mar 2017 03:19:53 +0000 (UTC) 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] [PATCH RFC 14/16] block: Add perm assertion on blk_set_aio_context 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: Kevin Wolf , Paolo Bonzini , qemu-block@nongnu.org, Stefan Hajnoczi , Max Reitz Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Now that all BB users comply with the BLK_PERM_AIO_CONTEXT_CHANGE rule, we can assert it. Signed-off-by: Fam Zheng --- block/block-backend.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/block/block-backend.c b/block/block-backend.c index ec8747f..8284b83 100644 --- a/block/block-backend.c +++ b/block/block-backend.c @@ -1623,8 +1623,12 @@ static AioContext *blk_aiocb_get_aio_context(BlockAI= OCB *acb) =20 void blk_set_aio_context(BlockBackend *blk, AioContext *new_context) { + uint64_t perm, shared_perm; BlockDriverState *bs =3D blk_bs(blk); =20 + blk_get_perm(blk, &perm, &shared_perm); + assert(perm & BLK_PERM_AIO_CONTEXT_CHANGE); + blk->aio_context =3D new_context; if (bs) { if (blk->public.throttle_state) { --=20 2.9.3