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{
    "id": 816264,
    "url": "http://patchwork.ozlabs.org/api/covers/816264/?format=api",
    "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/cover/20170920102311.25736-1-el13635@mail.ntua.gr/",
    "project": {
        "id": 14,
        "url": "http://patchwork.ozlabs.org/api/projects/14/?format=api",
        "name": "QEMU Development",
        "link_name": "qemu-devel",
        "list_id": "qemu-devel.nongnu.org",
        "list_email": "qemu-devel@nongnu.org",
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    },
    "msgid": "<20170920102311.25736-1-el13635@mail.ntua.gr>",
    "list_archive_url": null,
    "date": "2017-09-20T10:23:08",
    "name": "[0/3] add bdrv_co_drain_begin/end BlockDriver callbacks",
    "submitter": {
        "id": 71571,
        "url": "http://patchwork.ozlabs.org/api/people/71571/?format=api",
        "name": "Manos Pitsidianakis",
        "email": "el13635@mail.ntua.gr"
    },
    "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/cover/20170920102311.25736-1-el13635@mail.ntua.gr/mbox/",
    "series": [
        {
            "id": 4124,
            "url": "http://patchwork.ozlabs.org/api/series/4124/?format=api",
            "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=4124",
            "date": "2017-09-20T10:23:09",
            "name": "add bdrv_co_drain_begin/end BlockDriver callbacks",
            "version": 1,
            "mbox": "http://patchwork.ozlabs.org/series/4124/mbox/"
        }
    ],
    "comments": "http://patchwork.ozlabs.org/api/covers/816264/comments/",
    "headers": {
        "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>",
        "X-Original-To": "incoming@patchwork.ozlabs.org",
        "Delivered-To": "patchwork-incoming@bilbo.ozlabs.org",
        "Authentication-Results": "ozlabs.org;\n\tspf=pass (mailfrom) smtp.mailfrom=nongnu.org\n\t(client-ip=2001:4830:134:3::11; helo=lists.gnu.org;\n\tenvelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n\treceiver=<UNKNOWN>)",
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            "from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11])\n\t(using TLSv1 with cipher AES256-SHA (256/256 bits))\n\t(No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3xy23h22ffz9s81\n\tfor <incoming@patchwork.ozlabs.org>;\n\tThu, 21 Sep 2017 00:21:20 +1000 (AEST)",
            "from localhost ([::1]:48406 helo=lists.gnu.org)\n\tby lists.gnu.org with esmtp (Exim 4.71) (envelope-from\n\t<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>)\n\tid 1dufsM-0000Il-9p\n\tfor incoming@patchwork.ozlabs.org; Wed, 20 Sep 2017 10:21:18 -0400",
            "from eggs.gnu.org ([2001:4830:134:3::10]:41618)\n\tby lists.gnu.org with esmtp (Exim 4.71)\n\t(envelope-from <el13635@mail.ntua.gr>) id 1dufAQ-0001zq-SI\n\tfor qemu-devel@nongnu.org; Wed, 20 Sep 2017 09:35:55 -0400",
            "from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)\n\t(envelope-from <el13635@mail.ntua.gr>) id 1dufAQ-000108-04\n\tfor qemu-devel@nongnu.org; Wed, 20 Sep 2017 09:35:54 -0400",
            "from smtp1.ntua.gr ([2001:648:2000:de::183]:20570)\n\tby eggs.gnu.org with esmtp (Exim 4.71)\n\t(envelope-from <el13635@mail.ntua.gr>)\n\tid 1dufAN-0000sM-Cy; Wed, 20 Sep 2017 09:35:51 -0400",
            "from mail.ntua.gr (carp0.noc.ntua.gr [147.102.222.60])\n\t(authenticated bits=0)\n\tby smtp1.ntua.gr (8.15.2/8.15.2) with ESMTPSA id v8KANLKx022765\n\t(version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256\n\tverify=NOT); Wed, 20 Sep 2017 13:23:23 +0300 (EEST)\n\t(envelope-from el13635@mail.ntua.gr)"
        ],
        "X-Authentication-Warning": "smtp1.ntua.gr: Host carp0.noc.ntua.gr\n\t[147.102.222.60] claimed to be mail.ntua.gr",
        "From": "Manos Pitsidianakis <el13635@mail.ntua.gr>",
        "To": "qemu-devel <qemu-devel@nongnu.org>",
        "Date": "Wed, 20 Sep 2017 13:23:08 +0300",
        "Message-Id": "<20170920102311.25736-1-el13635@mail.ntua.gr>",
        "X-Mailer": "git-send-email 2.11.0",
        "X-detected-operating-system": "by eggs.gnu.org: Genre and OS details not\n\trecognized.",
        "X-Received-From": "2001:648:2000:de::183",
        "Subject": "[Qemu-devel] [PATCH 0/3] add bdrv_co_drain_begin/end BlockDriver\n\tcallbacks",
        "X-BeenThere": "qemu-devel@nongnu.org",
        "X-Mailman-Version": "2.1.21",
        "Precedence": "list",
        "List-Id": "<qemu-devel.nongnu.org>",
        "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n\t<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>",
        "List-Archive": "<http://lists.nongnu.org/archive/html/qemu-devel/>",
        "List-Post": "<mailto:qemu-devel@nongnu.org>",
        "List-Help": "<mailto:qemu-devel-request@nongnu.org?subject=help>",
        "List-Subscribe": "<https://lists.nongnu.org/mailman/listinfo/qemu-devel>,\n\t<mailto:qemu-devel-request@nongnu.org?subject=subscribe>",
        "Cc": "Kevin Wolf <kwolf@redhat.com>, Fam Zheng <famz@redhat.com>,\n\tStefan Hajnoczi <stefanha@redhat.com>,\n\tqemu-block <qemu-block@nongnu.org>, Max Reitz <mreitz@redhat.com>",
        "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org",
        "Sender": "\"Qemu-devel\"\n\t<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>"
    },
    "content": "This patch series renames bdrv_co_drain to bdrv_co_drain_begin and adds a new \nbdrv_co_drain_end callback to match bdrv_drained_begin/end and \ndrained_begin/end of BdrvChild. This is needed because the throttle driver \n(block/throttle.c) needs a way to mark the end of the drain in order to toggle \nio_limits_disabled correctly.\n\nBased-on: <20170918202529.28379-1-el13635@mail.ntua.gr>\n    \"block/throttle-groups.c: allocate RestartData on the heap\"\n    Which fixes a coroutine crash in block/throttle-groups.c\n\nManos Pitsidianakis (3):\n  block: add bdrv_co_drain_end callback\n  block: rename bdrv_co_drain to bdrv_co_drain_begin\n  block/throttle.c: add bdrv_co_drain_begin/end callbacks\n\n include/block/block_int.h |  4 +++-\n block/io.c                | 42 ++++++++++++++++++++++++++++++------------\n block/qed.c               |  6 +++---\n block/throttle.c          | 18 ++++++++++++++++++\n 4 files changed, 54 insertions(+), 16 deletions(-)"
}