From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:52389) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WGyMB-0003DW-KU for qemu-devel@nongnu.org; Fri, 21 Feb 2014 17:14:12 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WGyM6-0000iI-BQ for qemu-devel@nongnu.org; Fri, 21 Feb 2014 17:14:07 -0500 Received: from mx1.redhat.com ([209.132.183.28]:64153) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WGyM6-0000iB-25 for qemu-devel@nongnu.org; Fri, 21 Feb 2014 17:14:02 -0500 Received: from int-mx12.intmail.prod.int.phx2.redhat.com (int-mx12.intmail.prod.int.phx2.redhat.com [10.5.11.25]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id s1LME1Nw015065 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Fri, 21 Feb 2014 17:14:01 -0500 From: Kevin Wolf Date: Fri, 21 Feb 2014 23:12:46 +0100 Message-Id: <1393020771-32712-50-git-send-email-kwolf@redhat.com> In-Reply-To: <1393020771-32712-1-git-send-email-kwolf@redhat.com> References: <1393020771-32712-1-git-send-email-kwolf@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Subject: [Qemu-devel] [PULL 49/54] quorum: Add quorum_co_flush(). List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: kwolf@redhat.com From: Beno=C3=AEt Canet Makes a vote to select error if any. Signed-off-by: Benoit Canet Reviewed-by: Max Reitz Signed-off-by: Kevin Wolf --- block/quorum.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/block/quorum.c b/block/quorum.c index 38bc217..840afda 100644 --- a/block/quorum.c +++ b/block/quorum.c @@ -629,12 +629,40 @@ static void quorum_invalidate_cache(BlockDriverStat= e *bs) } } =20 +static coroutine_fn int quorum_co_flush(BlockDriverState *bs) +{ + BDRVQuorumState *s =3D bs->opaque; + QuorumVoteVersion *winner =3D NULL; + QuorumVotes error_votes; + QuorumVoteValue result_value; + int i; + int result =3D 0; + + QLIST_INIT(&error_votes.vote_list); + error_votes.compare =3D quorum_64bits_compare; + + for (i =3D 0; i < s->num_children; i++) { + result =3D bdrv_co_flush(s->bs[i]); + result_value.l =3D result; + quorum_count_vote(&error_votes, &result_value, i); + } + + winner =3D quorum_get_vote_winner(&error_votes); + result =3D winner->value.l; + + quorum_free_vote_list(&error_votes); + + return result; +} + static BlockDriver bdrv_quorum =3D { .format_name =3D "quorum", .protocol_name =3D "quorum", =20 .instance_size =3D sizeof(BDRVQuorumState), =20 + .bdrv_co_flush_to_disk =3D quorum_co_flush, + .bdrv_getlength =3D quorum_getlength, =20 .bdrv_aio_readv =3D quorum_aio_readv, --=20 1.8.1.4