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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6E4B2C4332F for ; Thu, 29 Dec 2022 07:02:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229822AbiL2HCx (ORCPT ); Thu, 29 Dec 2022 02:02:53 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43120 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229685AbiL2HCw (ORCPT ); Thu, 29 Dec 2022 02:02:52 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5919C12604; Wed, 28 Dec 2022 23:02:51 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 8DA46615FC; Thu, 29 Dec 2022 07:02:50 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5D0DCC433D2; Thu, 29 Dec 2022 07:02:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1672297369; bh=ZuXJhWxTiKK7rNV5+l64eAbjpD7WZx3v0R5AYbUoqOY=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=msZEjdMQFLp6RpIcuVr6Z/h76NOyUxXFChn2R69b9AQdizE2lkG5d+sozkDgu8Ngo CmuMZ1CP0rWTOxLhijuvMv+mao7wspAlchrjQyCV5JpnJzhw5tZT7RpFKZNmanK39l Ze1vflbh2xldEE1sjXV5mv9+Mn3ljI6ii7W5vNcALSb1x+BBJuS8StH/IK1SSPrlb7 cDM9Ak9AWGQwoIucVJsVU/j1IymNIAfXfTnsWy1tl+5j33q2PjtTX/l1wVttrm2Wtg z/76m+thVJWXiKN8riGAHG61W7o4Q9nrtdvi9F+qSb9XoX6EM7SCws3tUiWmXg+Oyv z0n9v0hc5AS9w== Date: Thu, 29 Dec 2022 09:02:45 +0200 From: Leon Romanovsky To: Bob Pearson Cc: Daisuke Matsuda , linux-rdma@vger.kernel.org, jgg@nvidia.com, zyjzyj2000@gmail.com, nvdimm@lists.linux.dev, linux-kernel@vger.kernel.org, yangx.jy@fujitsu.com, lizhijian@fujitsu.com, y-goto@fujitsu.com Subject: Re: [PATCH for-next v3 1/7] RDMA/rxe: Convert triple tasklets to use workqueue Message-ID: References: <53a2fca7-d98a-acef-8b18-d36a5a16d176@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <53a2fca7-d98a-acef-8b18-d36a5a16d176@gmail.com> Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org On Wed, Dec 28, 2022 at 10:56:11AM -0600, Bob Pearson wrote: > On 12/23/22 00:51, Daisuke Matsuda wrote: > > In order to implement On-Demand Paging on the rxe driver, triple tasklets > > (requester, responder, and completer) must be allowed to sleep so that they > > can trigger page fault when pages being accessed are not present. > > > > This patch replaces the tasklets with a workqueue, but still allows direct- > > call of works from softirq context if it is obvious that MRs are not going > > to be accessed and there is no work being processed in the workqueue. > > There are already at least two patch sets that do this waiting to get upstream I don't see any unhandled RXE series, except of this one patch [1], which is one out larger series. [1] https://patchwork.kernel.org/project/linux-rdma/patch/20221029031331.64518-1-rpearsonhpe@gmail.com/ > Bob