From nobody Wed Apr 16 12:20:40 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 (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 15446231886761004.1390235446327; Wed, 12 Dec 2018 05:59:48 -0800 (PST) Received: from localhost ([::1]:45095 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gX53D-0003hR-Do for importer@patchew.org; Wed, 12 Dec 2018 08:59:47 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46539) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gX4Z4-0003FY-1X for qemu-devel@nongnu.org; Wed, 12 Dec 2018 08:28:39 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gX4Z3-0001bW-0h for qemu-devel@nongnu.org; Wed, 12 Dec 2018 08:28:37 -0500 Received: from mx1.redhat.com ([209.132.183.28]:47572) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gX4Yz-0001YE-Im; Wed, 12 Dec 2018 08:28:33 -0500 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id E64FB30821FF; Wed, 12 Dec 2018 13:28:32 +0000 (UTC) Received: from linux.fritz.box.com (ovpn-117-245.ams2.redhat.com [10.36.117.245]) by smtp.corp.redhat.com (Postfix) with ESMTP id D35BF60C44; Wed, 12 Dec 2018 13:28:31 +0000 (UTC) From: Kevin Wolf To: qemu-block@nongnu.org Date: Wed, 12 Dec 2018 14:27:19 +0100 Message-Id: <20181212132735.16080-26-kwolf@redhat.com> In-Reply-To: <20181212132735.16080-1-kwolf@redhat.com> References: <20181212132735.16080-1-kwolf@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.47]); Wed, 12 Dec 2018 13:28:32 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 25/41] file-posix: Avoid aio_worker() for QEMU_AIO_IOCTL 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, peter.maydell@linaro.org, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" aio_worker() doesn't add anything interesting, it's only a useless indirection. Call the handler function directly instead. As we know that this handler function is only called from coroutine context and the coroutine stays around until the worker thread finishes, we can keep RawPosixAIOData on the stack. This was the last user of aio_worker(), so the function goes away now. Signed-off-by: Kevin Wolf --- block/file-posix.c | 55 +++++++++++++--------------------------------- 1 file changed, 15 insertions(+), 40 deletions(-) diff --git a/block/file-posix.c b/block/file-posix.c index 9c15bbe429..a2ab2c19b8 100644 --- a/block/file-posix.c +++ b/block/file-posix.c @@ -1152,8 +1152,9 @@ static int hdev_probe_geometry(BlockDriverState *bs, = HDGeometry *geo) } #endif =20 -static ssize_t handle_aiocb_ioctl(RawPosixAIOData *aiocb) +static int handle_aiocb_ioctl(void *opaque) { + RawPosixAIOData *aiocb =3D opaque; int ret; =20 ret =3D ioctl(aiocb->aio_fildes, aiocb->ioctl.cmd, aiocb->ioctl.buf); @@ -1788,34 +1789,6 @@ out: return result; } =20 -static int aio_worker(void *arg) -{ - RawPosixAIOData *aiocb =3D arg; - ssize_t ret =3D 0; - - switch (aiocb->aio_type & QEMU_AIO_TYPE_MASK) { - case QEMU_AIO_IOCTL: - ret =3D handle_aiocb_ioctl(aiocb); - break; - case QEMU_AIO_READ: - case QEMU_AIO_WRITE: - case QEMU_AIO_FLUSH: - case QEMU_AIO_DISCARD: - case QEMU_AIO_WRITE_ZEROES: - case QEMU_AIO_WRITE_ZEROES | QEMU_AIO_DISCARD: - case QEMU_AIO_COPY_RANGE: - case QEMU_AIO_TRUNCATE: - g_assert_not_reached(); - default: - error_report("invalid aio request (0x%x)", aiocb->aio_type); - ret =3D -EINVAL; - break; - } - - g_free(aiocb); - return ret; -} - static int coroutine_fn raw_thread_pool_submit(BlockDriverState *bs, ThreadPoolFunc func, void *= arg) { @@ -3113,8 +3086,7 @@ static int coroutine_fn hdev_co_ioctl(BlockDriverState *bs, unsigned long int req, void *buf) { BDRVRawState *s =3D bs->opaque; - RawPosixAIOData *acb; - ThreadPool *pool; + RawPosixAIOData acb; int ret; =20 ret =3D fd_open(bs); @@ -3131,15 +3103,18 @@ hdev_co_ioctl(BlockDriverState *bs, unsigned long i= nt req, void *buf) } } =20 - acb =3D g_new(RawPosixAIOData, 1); - acb->bs =3D bs; - acb->aio_type =3D QEMU_AIO_IOCTL; - acb->aio_fildes =3D s->fd; - acb->aio_offset =3D 0; - acb->ioctl.buf =3D buf; - acb->ioctl.cmd =3D req; - pool =3D aio_get_thread_pool(bdrv_get_aio_context(bs)); - return thread_pool_submit_co(pool, aio_worker, acb); + acb =3D (RawPosixAIOData) { + .bs =3D bs, + .aio_type =3D QEMU_AIO_IOCTL, + .aio_fildes =3D s->fd, + .aio_offset =3D 0, + .ioctl =3D { + .buf =3D buf, + .cmd =3D req, + }, + }; + + return raw_thread_pool_submit(bs, handle_aiocb_ioctl, &acb); } #endif /* linux */ =20 --=20 2.19.2