From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:47307) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XW21q-0005aU-60 for qemu-devel@nongnu.org; Mon, 22 Sep 2014 07:43:44 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XW21j-0007o1-L1 for qemu-devel@nongnu.org; Mon, 22 Sep 2014 07:43:38 -0400 Received: from mx1.redhat.com ([209.132.183.28]:61468) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XW21j-0007mw-Bj for qemu-devel@nongnu.org; Mon, 22 Sep 2014 07:43:31 -0400 From: Stefan Hajnoczi Date: Mon, 22 Sep 2014 12:41:52 +0100 Message-Id: <1411386150-24003-22-git-send-email-stefanha@redhat.com> In-Reply-To: <1411386150-24003-1-git-send-email-stefanha@redhat.com> References: <1411386150-24003-1-git-send-email-stefanha@redhat.com> Subject: [Qemu-devel] [PULL v2 21/59] sheepdog: Convert sd_aiocb_info.cancel to .cancel_async List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Peter Maydell , Fam Zheng , Stefan Hajnoczi From: Fam Zheng Also drop the now unused SheepdogAIOCB.finished field. Note that this aio is internal to sheepdog driver and has NULL cb and opaque, and should be unused at all. Signed-off-by: Fam Zheng Signed-off-by: Stefan Hajnoczi --- block/sheepdog.c | 46 +++++++++++++++++++--------------------------- 1 file changed, 19 insertions(+), 27 deletions(-) diff --git a/block/sheepdog.c b/block/sheepdog.c index 7da36e1..f538606 100644 --- a/block/sheepdog.c +++ b/block/sheepdog.c @@ -315,7 +315,6 @@ struct SheepdogAIOCB { void (*aio_done_func)(SheepdogAIOCB *); bool cancelable; - bool *finished; int nr_pending; }; @@ -446,9 +445,6 @@ static inline void free_aio_req(BDRVSheepdogState *s, AIOReq *aio_req) static void coroutine_fn sd_finish_aiocb(SheepdogAIOCB *acb) { qemu_coroutine_enter(acb->coroutine, NULL); - if (acb->finished) { - *acb->finished = true; - } qemu_aio_release(acb); } @@ -482,36 +478,33 @@ static void sd_aio_cancel(BlockDriverAIOCB *blockacb) SheepdogAIOCB *acb = (SheepdogAIOCB *)blockacb; BDRVSheepdogState *s = acb->common.bs->opaque; AIOReq *aioreq, *next; - bool finished = false; - - acb->finished = &finished; - while (!finished) { - if (sd_acb_cancelable(acb)) { - /* Remove outstanding requests from pending and failed queues. */ - QLIST_FOREACH_SAFE(aioreq, &s->pending_aio_head, aio_siblings, - next) { - if (aioreq->aiocb == acb) { - free_aio_req(s, aioreq); - } + + if (sd_acb_cancelable(acb)) { + /* Remove outstanding requests from pending and failed queues. */ + QLIST_FOREACH_SAFE(aioreq, &s->pending_aio_head, aio_siblings, + next) { + if (aioreq->aiocb == acb) { + free_aio_req(s, aioreq); } - QLIST_FOREACH_SAFE(aioreq, &s->failed_aio_head, aio_siblings, - next) { - if (aioreq->aiocb == acb) { - free_aio_req(s, aioreq); - } + } + QLIST_FOREACH_SAFE(aioreq, &s->failed_aio_head, aio_siblings, + next) { + if (aioreq->aiocb == acb) { + free_aio_req(s, aioreq); } + } - assert(acb->nr_pending == 0); - sd_finish_aiocb(acb); - return; + assert(acb->nr_pending == 0); + if (acb->common.cb) { + acb->common.cb(acb->common.opaque, -ECANCELED); } - aio_poll(s->aio_context, true); + sd_finish_aiocb(acb); } } static const AIOCBInfo sd_aiocb_info = { - .aiocb_size = sizeof(SheepdogAIOCB), - .cancel = sd_aio_cancel, + .aiocb_size = sizeof(SheepdogAIOCB), + .cancel_async = sd_aio_cancel, }; static SheepdogAIOCB *sd_aio_setup(BlockDriverState *bs, QEMUIOVector *qiov, @@ -528,7 +521,6 @@ static SheepdogAIOCB *sd_aio_setup(BlockDriverState *bs, QEMUIOVector *qiov, acb->aio_done_func = NULL; acb->cancelable = true; - acb->finished = NULL; acb->coroutine = qemu_coroutine_self(); acb->ret = 0; acb->nr_pending = 0; -- 1.9.3