From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2A7F0C282DD for ; Thu, 23 May 2019 16:04:58 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id F312820868 for ; Thu, 23 May 2019 16:04:57 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F312820868 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([127.0.0.1]:39887 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hTqDB-0006bW-4a for qemu-devel@archiver.kernel.org; Thu, 23 May 2019 12:04:57 -0400 Received: from eggs.gnu.org ([209.51.188.92]:60123) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hTqAB-0004Ln-66 for qemu-devel@nongnu.org; Thu, 23 May 2019 12:01:52 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hTqA8-0001y5-Dk for qemu-devel@nongnu.org; Thu, 23 May 2019 12:01:50 -0400 Received: from mx1.redhat.com ([209.132.183.28]:56327) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hTqA3-0001pd-6R; Thu, 23 May 2019 12:01:45 -0400 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 429BE81111; Thu, 23 May 2019 16:01:32 +0000 (UTC) Received: from localhost.localdomain.com (ovpn-116-143.ams2.redhat.com [10.36.116.143]) by smtp.corp.redhat.com (Postfix) with ESMTP id 2F1DB1001E6F; Thu, 23 May 2019 16:01:31 +0000 (UTC) From: Kevin Wolf To: qemu-block@nongnu.org Date: Thu, 23 May 2019 18:00:58 +0200 Message-Id: <20190523160104.21258-10-kwolf@redhat.com> In-Reply-To: <20190523160104.21258-1-kwolf@redhat.com> References: <20190523160104.21258-1-kwolf@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.28]); Thu, 23 May 2019 16:01:32 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH 09/15] block: Move node without parents to main AioContext 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, mreitz@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" A node should only be in a non-default AioContext if a user is attached to it that requires this. When the last parent of a node is gone, it can move back to the main AioContext. Signed-off-by: Kevin Wolf --- block.c | 4 ++++ tests/test-bdrv-drain.c | 2 +- tests/test-block-iothread.c | 3 +-- 3 files changed, 6 insertions(+), 3 deletions(-) diff --git a/block.c b/block.c index 5219f61279..19268f52f8 100644 --- a/block.c +++ b/block.c @@ -2235,6 +2235,10 @@ static void bdrv_replace_child(BdrvChild *child, B= lockDriverState *new_bs) bdrv_get_cumulative_perm(old_bs, &perm, &shared_perm); bdrv_check_perm(old_bs, NULL, perm, shared_perm, NULL, &error_ab= ort); bdrv_set_perm(old_bs, perm, shared_perm); + + /* When the parent requiring a non-default AioContext is removed= , the + * node moves back to the main AioContext */ + bdrv_try_set_aio_context(old_bs, qemu_get_aio_context(), NULL); } =20 if (new_bs) { diff --git a/tests/test-bdrv-drain.c b/tests/test-bdrv-drain.c index 447f6d12eb..2ff04db07a 100644 --- a/tests/test-bdrv-drain.c +++ b/tests/test-bdrv-drain.c @@ -1003,7 +1003,7 @@ static void test_blockjob_common_drain_node(enum dr= ain_type drain_type, =20 if (use_iothread) { blk_set_aio_context(blk_src, qemu_get_aio_context(), &error_abor= t); - blk_set_aio_context(blk_target, qemu_get_aio_context(), &error_a= bort); + assert(blk_get_aio_context(blk_target) =3D=3D qemu_get_aio_conte= xt()); } aio_context_release(ctx); =20 diff --git a/tests/test-block-iothread.c b/tests/test-block-iothread.c index f41082e3bd..79d9cf8a57 100644 --- a/tests/test-block-iothread.c +++ b/tests/test-block-iothread.c @@ -713,9 +713,8 @@ static void test_attach_preserve_blk_ctx(void) =20 /* Remove the node again */ blk_remove_bs(blk); - /* TODO bs should move back to main context here */ g_assert(blk_get_aio_context(blk) =3D=3D ctx); - g_assert(bdrv_get_aio_context(bs) =3D=3D ctx); + g_assert(bdrv_get_aio_context(bs) =3D=3D qemu_get_aio_context()); =20 /* Re-attach the node */ blk_insert_bs(blk, bs, &error_abort); --=20 2.20.1