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Thu, 28 Nov 2019 10:52:43 +0000 (UTC) Received: from dresden.str.redhat.com (ovpn-204-182.brq.redhat.com [10.40.204.182]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 29DA919C4F; Thu, 28 Nov 2019 10:52:41 +0000 (UTC) Subject: Re: [PATCH for-5.0 02/31] block: Add BdrvChildRole To: Vladimir Sementsov-Ogievskiy , "qemu-block@nongnu.org" References: <20191127131624.1062403-1-mreitz@redhat.com> <20191127131624.1062403-3-mreitz@redhat.com> <9d6e35ea-eed6-716a-75aa-e8f47f35b6b7@virtuozzo.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: <02c29aee-6f92-0648-c60a-875a3d8ca305@redhat.com> Date: Thu, 28 Nov 2019 11:52:40 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.2 MIME-Version: 1.0 In-Reply-To: <9d6e35ea-eed6-716a-75aa-e8f47f35b6b7@virtuozzo.com> X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-Mimecast-Spam-Score: 0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="ginbLrbjvucMajG9njnm1N7GWO4PsKZvD" X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] 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: Kevin Wolf , "qemu-devel@nongnu.org" 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) --ginbLrbjvucMajG9njnm1N7GWO4PsKZvD Content-Type: multipart/mixed; boundary="6fonzDlmCjeiPJB9m2uF5OAlPDObHKneD" --6fonzDlmCjeiPJB9m2uF5OAlPDObHKneD Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 28.11.19 10:31, Vladimir Sementsov-Ogievskiy wrote: > 27.11.2019 16:15, Max Reitz wrote: >> This enum will supplement BdrvChildClass when it comes to what role (or >> combination of roles) a child takes for its parent. >> >> Because empty enums are not allowed, let us just start with it filled. >> >> Signed-off-by: Max Reitz >> --- >> include/block/block.h | 38 ++++++++++++++++++++++++++++++++++++++ >> 1 file changed, 38 insertions(+) >> >> diff --git a/include/block/block.h b/include/block/block.h >> index 38963ef203..36817d5689 100644 >> --- a/include/block/block.h >> +++ b/include/block/block.h >> @@ -279,6 +279,44 @@ enum { >> DEFAULT_PERM_UNCHANGED =3D BLK_PERM_ALL & ~DEFAULT_PERM_PASST= HROUGH, >> }; >> =20 >> +typedef enum BdrvChildRole { >=20 > Don't you want to call it just BdrvChildFlags ? > Benefits: >=20 > 1. Do not intersect with old BdrvChildRole. Well, that doesn=E2=80=99t change the fact that the old BdrvChildRole just doesn=E2=80=99t describe a role. > 2. I think, BDRV_CHILD_STAY_AT_NODE is not a role, but just a property or= flag.. I can be convinced to let STAY_AT_NODE stay a property of BdrvChildClass. :-) What I don=E2=80=99t like about =E2=80=9CBdrvChildFlags=E2=80=9D is that = =E2=80=9Cflags=E2=80=9D doesn=E2=80=99t express anything. The permissions are flags, too. Max --6fonzDlmCjeiPJB9m2uF5OAlPDObHKneD-- --ginbLrbjvucMajG9njnm1N7GWO4PsKZvD Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEkb62CjDbPohX0Rgp9AfbAGHVz0AFAl3fpvgACgkQ9AfbAGHV z0DD5AgAlBS8dNO/rQt54DqGr6icrQwnFtkASGdbUsEPzxCbG0ZyKhF4VmtD3Kzq 75KuJqxM7OmT6dVCoWtuS/TcPjq850GLMUpAJEdq8Dhew0xqPgg1IhEPFfmBIX5Q 83Yg3/BXRr3acuQMMA4hOAQwKnHayJQ1zufzH8kk2PcoTDEXxA2j+6zFU1/hWJs9 gXhst9bZTtP0cybtxpM5fMWZwJD+YsMjN51LwxjhCW1FZZ0hr9nT71k4rd5fxoyr NwEmVX6NbztnKAUOYu17HXLbwC/yTPAMnjPrbJLLEwwutC/dUqtAO9So2drvDDS5 ex2dhMXxaJ+CQBIJnzgLnG27F1KCWQ== =a+zJ -----END PGP SIGNATURE----- --ginbLrbjvucMajG9njnm1N7GWO4PsKZvD--