From mboxrd@z Thu Jan 1 00:00:00 1970 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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 963C3C7618B for ; Fri, 26 Jul 2019 09:11:29 +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 6C62B2238C for ; Fri, 26 Jul 2019 09:11:29 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6C62B2238C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:37586 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hqwG8-0004J2-4M for qemu-devel@archiver.kernel.org; Fri, 26 Jul 2019 05:11:28 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59821) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hqwFx-0003ug-TA for qemu-devel@nongnu.org; Fri, 26 Jul 2019 05:11:18 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hqwFt-00044B-OH for qemu-devel@nongnu.org; Fri, 26 Jul 2019 05:11:16 -0400 Received: from mx1.redhat.com ([209.132.183.28]:40676) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hqwFt-0003qD-G2 for qemu-devel@nongnu.org; Fri, 26 Jul 2019 05:11:13 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 12B5D3022460 for ; Fri, 26 Jul 2019 09:11:10 +0000 (UTC) Received: from localhost (ovpn-117-212.ams2.redhat.com [10.36.117.212]) by smtp.corp.redhat.com (Postfix) with ESMTP id 089965DE80; Fri, 26 Jul 2019 09:11:04 +0000 (UTC) From: Stefan Hajnoczi To: virtio-fs@redhat.com, qemu-devel@nongnu.org Date: Fri, 26 Jul 2019 10:10:58 +0100 Message-Id: <20190726091103.23503-1-stefanha@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.49]); Fri, 26 Jul 2019 09:11:10 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH 0/5] virtiofsd: multithreading preparation 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: , Cc: "Dr. David Alan Gilbert" , Stefan Hajnoczi Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" virtiofsd is not ready for multithreading yet. This patch series starts = to make the code capable of processing multiple FUSE requests simultaneously= . I'm sending these fixes split into several patch series as I make progress au= diting the code for thread-safety issues. The final patch series will use a threadpool to process requests from a virtqueue in parallel and it will a= lso enable multiqueue. Patches 1 & 2 are cleanups discovered when auditing the code. They are n= ot related to multithreading. Stefan Hajnoczi (5): virtiofsd: skip unnecessary vu_queue_get_avail_bytes() virtiofsd: prevent lo_lookup() NULL pointer dereference virtiofsd: make lo_release() atomic virtiofsd: drop lo_dirp->fd field virtiofsd: prevent races with lo_dirp_put() contrib/virtiofsd/fuse_virtio.c | 13 +++--- contrib/virtiofsd/passthrough_ll.c | 71 +++++++++++++++++++++++------- 2 files changed, 60 insertions(+), 24 deletions(-) --=20 2.21.0