From nobody Sun Oct 5 19:22:51 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (208.118.235.17 [208.118.235.17]) by mx.zohomail.com with SMTPS id 1518723059839755.3351805545724; Thu, 15 Feb 2018 11:30:59 -0800 (PST) Received: from localhost ([::1]:52175 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1emPF4-0007iq-DF for importer@patchew.org; Thu, 15 Feb 2018 14:30:50 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50046) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1emPD9-0006Fc-ER for qemu-devel@nongnu.org; Thu, 15 Feb 2018 14:28:52 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1emPD8-0000m9-Cl for qemu-devel@nongnu.org; Thu, 15 Feb 2018 14:28:51 -0500 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:38916 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1emPD4-0000k5-Fq; Thu, 15 Feb 2018 14:28:46 -0500 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 224EB84252; Thu, 15 Feb 2018 19:28:46 +0000 (UTC) Received: from red.redhat.com (ovpn-122-122.rdu2.redhat.com [10.10.122.122]) by smtp.corp.redhat.com (Postfix) with ESMTP id 8CE27FFD26; Thu, 15 Feb 2018 19:28:45 +0000 (UTC) From: Eric Blake To: qemu-devel@nongnu.org Date: Thu, 15 Feb 2018 13:28:27 -0600 Message-Id: <20180215192829.9944-5-eblake@redhat.com> In-Reply-To: <20180215192829.9944-1-eblake@redhat.com> References: <20180215192829.9944-1-eblake@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Thu, 15 Feb 2018 19:28:46 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Thu, 15 Feb 2018 19:28:46 +0000 (UTC) for IP:'10.11.54.5' DOMAIN:'int-mx05.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'eblake@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH 4/6] rbd: Switch to byte-based callbacks X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kwolf@redhat.com, Josh Durgin , Jeff Cody , qemu-block@nongnu.org, Max Reitz Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" We are gradually moving away from sector-based interfaces, towards byte-based. Make the change for the last few sector-based callbacks in the rbd driver. Note that the driver was already using byte-based calls for performing actual I/O, so this just gets rid of a round trip of scaling; however, the block layer defaults this driver to use request_alignment of 512, and I did not change that. Signed-off-by: Eric Blake --- block/rbd.c | 36 ++++++++++++++++-------------------- 1 file changed, 16 insertions(+), 20 deletions(-) diff --git a/block/rbd.c b/block/rbd.c index 8474b0ba117..b3a613023c1 100644 --- a/block/rbd.c +++ b/block/rbd.c @@ -870,27 +870,23 @@ failed: return NULL; } -static BlockAIOCB *qemu_rbd_aio_readv(BlockDriverState *bs, - int64_t sector_num, - QEMUIOVector *qiov, - int nb_sectors, - BlockCompletionFunc *cb, - void *opaque) -{ - return rbd_start_aio(bs, sector_num << BDRV_SECTOR_BITS, qiov, - (int64_t) nb_sectors << BDRV_SECTOR_BITS, cb, opa= que, - RBD_AIO_READ); -} - -static BlockAIOCB *qemu_rbd_aio_writev(BlockDriverState *bs, - int64_t sector_num, - QEMUIOVector *qiov, - int nb_sectors, +static BlockAIOCB *qemu_rbd_aio_preadv(BlockDriverState *bs, + uint64_t offset, uint64_t bytes, + QEMUIOVector *qiov, int flags, BlockCompletionFunc *cb, void *opaque) { - return rbd_start_aio(bs, sector_num << BDRV_SECTOR_BITS, qiov, - (int64_t) nb_sectors << BDRV_SECTOR_BITS, cb, opa= que, + return rbd_start_aio(bs, offset, qiov, bytes, cb, opaque, + RBD_AIO_READ); +} + +static BlockAIOCB *qemu_rbd_aio_pwritev(BlockDriverState *bs, + uint64_t offset, uint64_t bytes, + QEMUIOVector *qiov, int flags, + BlockCompletionFunc *cb, + void *opaque) +{ + return rbd_start_aio(bs, offset, qiov, bytes, cb, opaque, RBD_AIO_WRITE); } @@ -1140,8 +1136,8 @@ static BlockDriver bdrv_rbd =3D { .bdrv_truncate =3D qemu_rbd_truncate, .protocol_name =3D "rbd", - .bdrv_aio_readv =3D qemu_rbd_aio_readv, - .bdrv_aio_writev =3D qemu_rbd_aio_writev, + .bdrv_aio_preadv =3D qemu_rbd_aio_preadv, + .bdrv_aio_pwritev =3D qemu_rbd_aio_pwritev, #ifdef LIBRBD_SUPPORTS_AIO_FLUSH .bdrv_aio_flush =3D qemu_rbd_aio_flush, --=20 2.14.3