From patchwork Thu Nov 8 09:05:14 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kirill Tkhai X-Patchwork-Id: 10673805 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 61A1B1057 for ; Thu, 8 Nov 2018 09:06:27 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4E9612B659 for ; Thu, 8 Nov 2018 09:06:27 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3FE632BB12; Thu, 8 Nov 2018 09:06:27 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D9C2F2B659 for ; Thu, 8 Nov 2018 09:06:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726695AbeKHSju (ORCPT ); Thu, 8 Nov 2018 13:39:50 -0500 Received: from relay.sw.ru ([185.231.240.75]:36762 "EHLO relay.sw.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726630AbeKHSjs (ORCPT ); Thu, 8 Nov 2018 13:39:48 -0500 Received: from [172.16.25.169] (helo=localhost.localdomain) by relay.sw.ru with esmtp (Exim 4.90_1) (envelope-from ) id 1gKgFW-00062G-UO; Thu, 08 Nov 2018 12:05:15 +0300 Subject: [PATCH v2 0/5] fuse: Interrupt-related optimizations and improvements From: Kirill Tkhai To: miklos@szeredi.hu, ktkhai@virtuozzo.com, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Date: Thu, 08 Nov 2018 12:05:14 +0300 Message-ID: <154166765576.10655.15178401490817622677.stgit@localhost.localdomain> User-Agent: StGit/0.18 MIME-Version: 1.0 Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP v2: Changes in [1-2,5] patches. The biggest change is in [5], where repeater FR_INTERRUPTED assignment is removed. This patchset consists of several parts. Patches [1-2] optimize likely case of request_end(), and make this function to take fiq->waitq.lock only, when it is really needed. This improves performance of this function completes. Patch 3 makes request_end() to call wake_up() only for not background requests (background requests never wait answer), and this optimizes this function a bit more Patches [4-5] makes code to check userspace requests correct interrupt id to requeue (whether we've sent this interrupt). --- Kirill Tkhai (5): fuse: Kill fasync only if interrupt is queued in queue_interrupt() fuse: Optimize request_end() by not taking fiq->waitq.lock fuse: Wake up req->waitq of only not background requests in request_end() fuse: Do some refactoring in fuse_dev_do_write() fuse: Verify userspace asks to requeue interrupt that we really sent fs/fuse/dev.c | 57 ++++++++++++++++++++++++++++++++++++++------------------- 1 file changed, 38 insertions(+), 19 deletions(-) -- Signed-off-by: Kirill Tkhai