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Tue, 7 Apr 2020 12:54:15 +0000 (UTC) Received: from dresden.str.redhat.com (ovpn-114-84.ams2.redhat.com [10.36.114.84]) by smtp.corp.redhat.com (Postfix) with ESMTPS id F06739DD74; Tue, 7 Apr 2020 12:54:05 +0000 (UTC) Subject: Re: [PATCH for-5.0 v3 2/3] block: Increase BB.in_flight for coroutine and sync interfaces To: Kevin Wolf , qemu-block@nongnu.org References: <20200407121259.21350-1-kwolf@redhat.com> <20200407121259.21350-3-kwolf@redhat.com> From: Max Reitz Autocrypt: addr=mreitz@redhat.com; prefer-encrypt=mutual; keydata= mQENBFXOJlcBCADEyyhOTsoa/2ujoTRAJj4MKA21dkxxELVj3cuILpLTmtachWj7QW+TVG8U /PsMCFbpwsQR7oEy8eHHZwuGQsNpEtNC2G/L8Yka0BIBzv7dEgrPzIu+W3anZXQW4702+uES U29G8TP/NGfXRRHGlbBIH9KNUnOSUD2vRtpOLXkWsV5CN6vQFYgQfFvmp5ZpPeUe6xNplu8V mcTw8OSEDW/ZnxJc8TekCKZSpdzYoxfzjm7xGmZqB18VFwgJZlIibt1HE0EB4w5GsD7x5ekh awIe3RwoZgZDLQMdOitJ1tUc8aqaxvgA4tz6J6st8D8pS//m1gAoYJWGwwIVj1DjTYLtABEB AAG0HU1heCBSZWl0eiA8bXJlaXR6QHJlZGhhdC5jb20+iQFTBBMBCAA9AhsDBQkSzAMABQsJ CAcCBhUICQoLAgQWAgMBAh4BAheABQJVzie5FRhoa3A6Ly9rZXlzLmdudXBnLm5ldAAKCRD0 B9sAYdXPQDcIB/9uNkbYEex1rHKz3mr12uxYMwLOOFY9fstP5aoVJQ1nWQVB6m2cfKGdcRe1 2/nFaHSNAzT0NnKz2MjhZVmcrpyd2Gp2QyISCfb1FbT82GMtXFj1wiHmPb3CixYmWGQUUh+I AvUqsevLA+WihgBUyaJq/vuDVM1/K9Un+w+Tz5vpeMidlIsTYhcsMhn0L9wlCjoucljvbDy/ 8C9L2DUdgi3XTa0ORKeflUhdL4gucWoAMrKX2nmPjBMKLgU7WLBc8AtV+84b9OWFML6NEyo4 4cP7cM/07VlJK53pqNg5cHtnWwjHcbpGkQvx6RUx6F1My3y52vM24rNUA3+ligVEgPYBuQEN BFXOJlcBCADAmcVUNTWT6yLWQHvxZ0o47KCP8OcLqD+67T0RCe6d0LP8GsWtrJdeDIQk+T+F xO7DolQPS6iQ6Ak2/lJaPX8L0BkEAiMuLCKFU6Bn3lFOkrQeKp3u05wCSV1iKnhg0UPji9V2 W5eNfy8F4ZQHpeGUGy+liGXlxqkeRVhLyevUqfU0WgNqAJpfhHSGpBgihUupmyUg7lfUPeRM DzAN1pIqoFuxnN+BRHdAecpsLcbR8sQddXmDg9BpSKozO/JyBmaS1RlquI8HERQoe6EynJhd 64aICHDfj61rp+/0jTIcevxIIAzW70IadoS/y3DVIkuhncgDBvGbF3aBtjrJVP+5ABEBAAGJ ASUEGAEIAA8FAlXOJlcCGwwFCRLMAwAACgkQ9AfbAGHVz0CbFwf9F/PXxQR9i4N0iipISYjU sxVdjJOM2TMut+ZZcQ6NSMvhZ0ogQxJ+iEQ5OjnIputKvPVd5U7WRh+4lF1lB/NQGrGZQ1ic alkj6ocscQyFwfib+xIe9w8TG1CVGkII7+TbS5pXHRxZH1niaRpoi/hYtgzkuOPp35jJyqT/ /ELbqQTDAWcqtJhzxKLE/ugcOMK520dJDeb6x2xVES+S5LXby0D4juZlvUj+1fwZu+7Io5+B bkhSVPb/QdOVTpnz7zWNyNw+OONo1aBUKkhq2UIByYXgORPFnbfMY7QWHcjpBVw9MgC4tGeF R4bv+1nAMMxKmb5VvQCExr0eFhJUAHAhVg== Message-ID: <28f30c07-2980-a76f-3ec2-8effe7033b42@redhat.com> Date: Tue, 7 Apr 2020 14:54:03 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.6.0 MIME-Version: 1.0 In-Reply-To: <20200407121259.21350-3-kwolf@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="Ad4KHj6YKJNbLWL8FR7BIm6HSPTFdG1CQ" X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 205.139.110.120 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: vsementsov@virtuozzo.com, s.reiter@proxmox.com, qemu-devel@nongnu.org, t.lamprecht@proxmox.com, stefanha@redhat.com, dietmar@proxmox.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --Ad4KHj6YKJNbLWL8FR7BIm6HSPTFdG1CQ Content-Type: multipart/mixed; boundary="zkPWGW23GTGM3oAu0Vpf7pksYAKngjLqa" --zkPWGW23GTGM3oAu0Vpf7pksYAKngjLqa Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 07.04.20 14:12, Kevin Wolf wrote: > External callers of blk_co_*() and of the synchronous blk_*() functions > don't currently increase the BlockBackend.in_flight counter, but calls > from blk_aio_*() do, so there is an inconsistency whether the counter > has been increased or not. >=20 > This patch moves the actual operations to static functions that can > later know they will always be called with in_flight increased exactly > once, even for external callers using the blk_co_*() coroutine > interfaces. >=20 > If the public blk_co_*() interface is unused, remove it. >=20 > Signed-off-by: Kevin Wolf > --- > include/sysemu/block-backend.h | 1 - > block/block-backend.c | 103 +++++++++++++++++++++++++-------- > 2 files changed, 80 insertions(+), 24 deletions(-) Thanks! Reviewed-by: Max Reitz --zkPWGW23GTGM3oAu0Vpf7pksYAKngjLqa-- --Ad4KHj6YKJNbLWL8FR7BIm6HSPTFdG1CQ Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEkb62CjDbPohX0Rgp9AfbAGHVz0AFAl6Md+sACgkQ9AfbAGHV z0BQEAf8D/FOycIAdZLlZM99PfnfyygiEtMIx7P8sh/Uuigz2RSvJ86+U9lq/6gB gti/RXlkEqSiOUPRUBQGqCMu31Ab35xRp33smXKzlhsSMjoZ714z7R+Va6iqT2LZ sSBYS4l7B1fbe4p6thw9Nh+dWxlnNHGHhVUYba9q4iFbX/kUYtiWf37qGTTHDiVd Kz29IVdpbC88nChL1l4tZqX2lVBvS8cFi14Lmhm64aoovpgm5XZkG1ZPMiPKEtZ9 aRkAvISn0dtEKBzYLOWuRs++Q7ysA0MczjnPGryQx11bJDmbiKYIitn0vNqFYO3U Um1esNAiOlwDpveCIhXjpt19GrfjoA== =3xv1 -----END PGP SIGNATURE----- --Ad4KHj6YKJNbLWL8FR7BIm6HSPTFdG1CQ--