From patchwork Thu Oct 22 18:13:30 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Gonglei \(Arei\)\" via" X-Patchwork-Id: 302250 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 35551C4363A for ; Thu, 22 Oct 2020 18:21:53 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 80446223C7 for ; Thu, 22 Oct 2020 18:21:52 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 80446223C7 Authentication-Results: mail.kernel.org; dmarc=pass (p=none dis=none) header.from=nongnu.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:32852 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kVfDj-0006wu-FM for qemu-devel@archiver.kernel.org; Thu, 22 Oct 2020 14:21:51 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:48578) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kVf6A-0000XD-GJ; Thu, 22 Oct 2020 14:14:02 -0400 Received: from relay.sw.ru ([185.231.240.75]:52122 helo=relay3.sw.ru) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kVf5x-0001np-K4; Thu, 22 Oct 2020 14:14:02 -0400 Received: from [172.16.25.136] (helo=localhost.sw.ru) by relay3.sw.ru with esmtp (Exim 4.94) (envelope-from ) id 1kVf5r-005dVw-DR; Thu, 22 Oct 2020 21:13:43 +0300 To: qemu-block@nongnu.org Cc: qemu-devel@nongnu.org, fam@euphon.net, stefanha@redhat.com, kwolf@redhat.com, mreitz@redhat.com, armbru@redhat.com, jsnow@redhat.com, eblake@redhat.com, den@openvz.org, vsementsov@virtuozzo.com, andrey.shinkevich@virtuozzo.com Subject: [PATCH v12 01/14] copy-on-read: support preadv/pwritev_part functions Date: Thu, 22 Oct 2020 21:13:30 +0300 Message-Id: <1603390423-980205-2-git-send-email-andrey.shinkevich@virtuozzo.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1603390423-980205-1-git-send-email-andrey.shinkevich@virtuozzo.com> References: <1603390423-980205-1-git-send-email-andrey.shinkevich@virtuozzo.com> Received-SPF: pass client-ip=185.231.240.75; envelope-from=andrey.shinkevich@virtuozzo.com; helo=relay3.sw.ru X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/22 14:13:46 X-ACL-Warn: Detected OS = Linux 3.11 and newer [fuzzy] X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, 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: 2.1.23 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" Reply-to: Andrey Shinkevich X-Patchwork-Original-From: Andrey Shinkevich via From: "Gonglei \(Arei\)\" via" Add support for the recently introduced functions bdrv_co_preadv_part() and bdrv_co_pwritev_part() to the COR-filter driver. Signed-off-by: Andrey Shinkevich Reviewed-by: Vladimir Sementsov-Ogievskiy --- block/copy-on-read.c | 28 ++++++++++++++++------------ 1 file changed, 16 insertions(+), 12 deletions(-) diff --git a/block/copy-on-read.c b/block/copy-on-read.c index 2816e61..cb03e0f 100644 --- a/block/copy-on-read.c +++ b/block/copy-on-read.c @@ -74,21 +74,25 @@ static int64_t cor_getlength(BlockDriverState *bs) } -static int coroutine_fn cor_co_preadv(BlockDriverState *bs, - uint64_t offset, uint64_t bytes, - QEMUIOVector *qiov, int flags) +static int coroutine_fn cor_co_preadv_part(BlockDriverState *bs, + uint64_t offset, uint64_t bytes, + QEMUIOVector *qiov, + size_t qiov_offset, + int flags) { - return bdrv_co_preadv(bs->file, offset, bytes, qiov, - flags | BDRV_REQ_COPY_ON_READ); + return bdrv_co_preadv_part(bs->file, offset, bytes, qiov, qiov_offset, + flags | BDRV_REQ_COPY_ON_READ); } -static int coroutine_fn cor_co_pwritev(BlockDriverState *bs, - uint64_t offset, uint64_t bytes, - QEMUIOVector *qiov, int flags) +static int coroutine_fn cor_co_pwritev_part(BlockDriverState *bs, + uint64_t offset, + uint64_t bytes, + QEMUIOVector *qiov, + size_t qiov_offset, int flags) { - - return bdrv_co_pwritev(bs->file, offset, bytes, qiov, flags); + return bdrv_co_pwritev_part(bs->file, offset, bytes, qiov, qiov_offset, + flags); } @@ -137,8 +141,8 @@ static BlockDriver bdrv_copy_on_read = { .bdrv_getlength = cor_getlength, - .bdrv_co_preadv = cor_co_preadv, - .bdrv_co_pwritev = cor_co_pwritev, + .bdrv_co_preadv_part = cor_co_preadv_part, + .bdrv_co_pwritev_part = cor_co_pwritev_part, .bdrv_co_pwrite_zeroes = cor_co_pwrite_zeroes, .bdrv_co_pdiscard = cor_co_pdiscard, .bdrv_co_pwritev_compressed = cor_co_pwritev_compressed,