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=-7.2 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 86222C433ED for ; Sat, 1 May 2021 06:13:39 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 251F9613A9 for ; Sat, 1 May 2021 06:13:39 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 251F9613A9 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=lespinasse.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 97FB26B006C; Sat, 1 May 2021 02:13:38 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 930FD6B006E; Sat, 1 May 2021 02:13:38 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 784016B0070; Sat, 1 May 2021 02:13:38 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0070.hostedemail.com [216.40.44.70]) by kanga.kvack.org (Postfix) with ESMTP id 5E6E46B006C for ; Sat, 1 May 2021 02:13:38 -0400 (EDT) Received: from smtpin38.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 10721824999B for ; Sat, 1 May 2021 06:13:38 +0000 (UTC) X-FDA: 78091645716.38.4A8964E Received: from server.lespinasse.org (server.lespinasse.org [63.205.204.226]) by imf03.hostedemail.com (Postfix) with ESMTP id 721CAC0007C9 for ; Sat, 1 May 2021 06:13:31 +0000 (UTC) DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=lespinasse.org; i=@lespinasse.org; q=dns/txt; s=srv-14-ed; t=1619849615; h=date : from : to : cc : subject : message-id : references : mime-version : content-type : in-reply-to : from; bh=xPSpvQ0vttQgx8vc8QjpV7QF/EF3iUal+uGRHaKvlj0=; b=jUnjHtkSxb7nb0OZ37iv4gYEshItyzYBHm0FDbN9mDJnhcmm06HsKu9mZcZ96rnLKXig5 WWSAj6zduZ8qM/CBg== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=lespinasse.org; i=@lespinasse.org; q=dns/txt; s=srv-14-rsa; t=1619849615; h=date : from : to : cc : subject : message-id : references : mime-version : content-type : in-reply-to : from; bh=xPSpvQ0vttQgx8vc8QjpV7QF/EF3iUal+uGRHaKvlj0=; b=WeoTKebCC/3VeDmCMTrygVvWJTQDvus+H+s7pfqy9UhH1vWDDireyvUoYtWmbsXxsmTP/ vZa0ESgLCFh440zJozXX3aFbZYsusiwe0fq5cuY8vpf32j7Waeio7/m48knfyfFPMQxeP8a tfeKYP33OjoEBHaxBjWVJc6lAaiUrD8unRfsTyVVcp2+NOSsyY0ppkcboyhLhn7fASdFR3j HV+oPzAVlan6uidHPIk6iwo3N/wE0gI4CJZi4GIsVMB/Nqd8eZRQk5IirQX4alENP3yuL0B VKtR6Sner2DIgp/Q24MwT0+nMpsFcjM5fBLYVHV1IJgXN/4x/sPtKOJCnvAg== Received: by server.lespinasse.org (Postfix, from userid 1000) id E0F29160324; Fri, 30 Apr 2021 23:13:35 -0700 (PDT) Date: Fri, 30 Apr 2021 23:13:35 -0700 From: Michel Lespinasse To: Liam Howlett Cc: "maple-tree@lists.infradead.org" , "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" , Andrew Morton , Song Liu , Davidlohr Bueso , "Paul E . McKenney" , Matthew Wilcox , Laurent Dufour , David Rientjes , Axel Rasmussen , Suren Baghdasaryan , Vlastimil Babka , Rik van Riel , Peter Zijlstra , Michel Lespinasse Subject: Re: [PATCH 94/94] mm: Move mas locking outside of munmap() path. Message-ID: <20210501061335.GD5188@lespinasse.org> References: <20210428153542.2814175-1-Liam.Howlett@Oracle.com> <20210428153542.2814175-95-Liam.Howlett@Oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210428153542.2814175-95-Liam.Howlett@Oracle.com> User-Agent: Mutt/1.10.1 (2018-07-13) Authentication-Results: imf03.hostedemail.com; dkim=pass header.d=lespinasse.org header.s=srv-14-ed header.b=jUnjHtkS; dkim=pass header.d=lespinasse.org header.s=srv-14-rsa header.b=WeoTKebC; dmarc=pass (policy=none) header.from=lespinasse.org; spf=pass (imf03.hostedemail.com: domain of michel@lespinasse.org designates 63.205.204.226 as permitted sender) smtp.mailfrom=michel@lespinasse.org X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 721CAC0007C9 X-Stat-Signature: h1wxtzo7zdaurrs4jxuidn1b6km34tjm Received-SPF: none (lespinasse.org>: No applicable sender policy available) receiver=imf03; identity=mailfrom; envelope-from=""; helo=server.lespinasse.org; client-ip=63.205.204.226 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1619849611-23016 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Wed, Apr 28, 2021 at 03:36:32PM +0000, Liam Howlett wrote: > Now that there is a split variant that allows splitting to use a maple state, > move the locks to a more logical position. In this patch set, is the maple tree lock ever held outside of code sections already protected by the mmap write lock ? -- Michel "walken" Lespinasse