From patchwork Fri Nov 25 13:35:11 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Emanuele Giuseppe Esposito X-Patchwork-Id: 13055948 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8EAD6C43217 for ; Fri, 25 Nov 2022 13:37:35 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oyYry-0006eA-AC; Fri, 25 Nov 2022 08:35:54 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oyYre-0006S4-AE for qemu-devel@nongnu.org; Fri, 25 Nov 2022 08:35:35 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oyYrY-0005DM-PW for qemu-devel@nongnu.org; Fri, 25 Nov 2022 08:35:33 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1669383328; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=B4GGvJzU1xDo9k0/o7coYHmaRBryfde1vvicjZyY9O4=; b=TiE7jwQjGgxQjHGD0knM6amrz4SSSJfuh+LGZEaPcpPvqmbtItl6HdyNq2oaJdMhM85r0s EkP9BJo3WhW1MvRxxUZuo9pS2ZMyFZSt+Rm5BXqePlL6XWIkHeiGC7ifAtDylV9FYxRqFK enw/BY0fLFLx88zryBctUWSdn+XKeqk= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-350-Pv8lFmiZMDqYcugwxyWglQ-1; Fri, 25 Nov 2022 08:35:24 -0500 X-MC-Unique: Pv8lFmiZMDqYcugwxyWglQ-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 78B0D811E67; Fri, 25 Nov 2022 13:35:24 +0000 (UTC) Received: from virtlab701.virt.lab.eng.bos.redhat.com (virtlab701.virt.lab.eng.bos.redhat.com [10.19.152.228]) by smtp.corp.redhat.com (Postfix) with ESMTP id 194382166B47; Fri, 25 Nov 2022 13:35:24 +0000 (UTC) From: Emanuele Giuseppe Esposito To: qemu-block@nongnu.org Cc: Kevin Wolf , Paolo Bonzini , Hanna Reitz , John Snow , Vladimir Sementsov-Ogievskiy , Eric Blake , Fam Zheng , Stefan Hajnoczi , "Denis V. Lunev" , Stefan Weil , Jeff Cody , Cleber Rosa , qemu-devel@nongnu.org, Emanuele Giuseppe Esposito Subject: [PATCH v6 07/14] block: distinguish between bdrv_create running in coroutine and not Date: Fri, 25 Nov 2022 08:35:11 -0500 Message-Id: <20221125133518.418328-8-eesposit@redhat.com> In-Reply-To: <20221125133518.418328-1-eesposit@redhat.com> References: <20221125133518.418328-1-eesposit@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.6 Received-SPF: pass client-ip=170.10.133.124; envelope-from=eesposit@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Call two different functions depending on whether bdrv_create is in coroutine or not, following the same pattern as generated_co_wrapper functions. This allows to also call the coroutine function directly, without using CreateCo or relying in bdrv_create(). Signed-off-by: Emanuele Giuseppe Esposito Reviewed-by: Kevin Wolf Reviewed-by: Vladimir Sementsov-Ogievskiy --- block.c | 71 +++++++++++++++++++++++++++++---------------------------- 1 file changed, 36 insertions(+), 35 deletions(-) diff --git a/block.c b/block.c index 9d51e7b6e5..2cf50b37c4 100644 --- a/block.c +++ b/block.c @@ -528,63 +528,64 @@ typedef struct CreateCo { Error *err; } CreateCo; -static void coroutine_fn bdrv_create_co_entry(void *opaque) +static int coroutine_fn bdrv_co_create(BlockDriver *drv, const char *filename, + QemuOpts *opts, Error **errp) { - Error *local_err = NULL; int ret; + GLOBAL_STATE_CODE(); + ERRP_GUARD(); + assert(*errp == NULL); + assert(drv); + + if (!drv->bdrv_co_create_opts) { + error_setg(errp, "Driver '%s' does not support image creation", + drv->format_name); + return -ENOTSUP; + } + + ret = drv->bdrv_co_create_opts(drv, filename, opts, errp); + if (ret < 0 && !*errp) { + error_setg_errno(errp, -ret, "Could not create image"); + } + + return ret; +} + +static void coroutine_fn bdrv_create_co_entry(void *opaque) +{ CreateCo *cco = opaque; - assert(cco->drv); GLOBAL_STATE_CODE(); - ret = cco->drv->bdrv_co_create_opts(cco->drv, - cco->filename, cco->opts, &local_err); - error_propagate(&cco->err, local_err); - cco->ret = ret; + cco->ret = bdrv_co_create(cco->drv, cco->filename, cco->opts, &cco->err); } int bdrv_create(BlockDriver *drv, const char* filename, QemuOpts *opts, Error **errp) { - int ret; - GLOBAL_STATE_CODE(); - Coroutine *co; - CreateCo cco = { - .drv = drv, - .filename = filename, - .opts = opts, - .ret = NOT_DONE, - .err = NULL, - }; - - if (!drv->bdrv_co_create_opts) { - error_setg(errp, "Driver '%s' does not support image creation", drv->format_name); - return -ENOTSUP; - } - if (qemu_in_coroutine()) { /* Fast-path if already in coroutine context */ - bdrv_create_co_entry(&cco); + return bdrv_co_create(drv, filename, opts, errp); } else { + Coroutine *co; + CreateCo cco = { + .drv = drv, + .filename = filename, + .opts = opts, + .ret = NOT_DONE, + .err = NULL, + }; + co = qemu_coroutine_create(bdrv_create_co_entry, &cco); qemu_coroutine_enter(co); while (cco.ret == NOT_DONE) { aio_poll(qemu_get_aio_context(), true); } + error_propagate(errp, cco.err); + return cco.ret; } - - ret = cco.ret; - if (ret < 0) { - if (cco.err) { - error_propagate(errp, cco.err); - } else { - error_setg_errno(errp, -ret, "Could not create image"); - } - } - - return ret; } /**