From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:34672) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Tvrl7-0004Er-4k for qemu-devel@nongnu.org; Thu, 17 Jan 2013 10:52:07 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Tvrl4-0005vV-Az for qemu-devel@nongnu.org; Thu, 17 Jan 2013 10:52:04 -0500 Received: from nodalink.pck.nerim.net ([62.212.105.220]:44096 helo=paradis.irqsave.net) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Tvrl4-0005vL-0W for qemu-devel@nongnu.org; Thu, 17 Jan 2013 10:52:02 -0500 From: =?UTF-8?q?Beno=C3=AEt=20Canet?= Date: Thu, 17 Jan 2013 16:51:36 +0100 Message-Id: <1358437897-24251-11-git-send-email-benoit@irqsave.net> In-Reply-To: <1358437897-24251-1-git-send-email-benoit@irqsave.net> References: <1358437897-24251-1-git-send-email-benoit@irqsave.net> Subject: [Qemu-devel] [RFC V6 10/11] quorum: Add quorum_co_is_allocated. List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: kwolf@redhat.com, pbonzini@redhat.com, =?UTF-8?q?Beno=C3=AEt=20Canet?= , stefanha@redhat.com Signed-off-by: Benoit Canet --- block/quorum.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/block/quorum.c b/block/quorum.c index bd478ab..4bea906 100644 --- a/block/quorum.c +++ b/block/quorum.c @@ -621,6 +621,37 @@ static void quorum_invalidate_cache(BlockDriverState *bs) } } +static int coroutine_fn quorum_co_is_allocated(BlockDriverState *bs, + int64_t sector_num, + int nb_sectors, + int *pnum) +{ + BDRVQuorumState *s = bs->opaque; + QuorumVoteVersion *winner = NULL; + QuorumVotes result_votes, num_votes; + int i, result = 0, num; + + QLIST_INIT(&result_votes.vote_list); + QLIST_INIT(&num_votes.vote_list); + + for (i = 0; i < s->total; i++) { + result = bdrv_co_is_allocated(s->bs[i], sector_num, nb_sectors, &num); + quorum_count_vote(&result_votes, result, i); + quorum_count_vote(&num_votes, num, i); + } + + winner = quorum_get_vote_winner(&result_votes); + result = winner->value; + + winner = quorum_get_vote_winner(&num_votes); + *pnum = winner->value; + + quorum_free_vote_list(&result_votes); + quorum_free_vote_list(&num_votes); + + return result; +} + static BlockDriver bdrv_quorum = { .format_name = "quorum", .protocol_name = "quorum", @@ -635,6 +666,7 @@ static BlockDriver bdrv_quorum = { .bdrv_aio_readv = quorum_aio_readv, .bdrv_aio_writev = quorum_aio_writev, .bdrv_invalidate_cache = quorum_invalidate_cache, + .bdrv_co_is_allocated = quorum_co_is_allocated, }; static void bdrv_quorum_init(void) -- 1.7.10.4