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=-5.8 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 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 60648C433E0 for ; Wed, 17 Feb 2021 08:15:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1360F64D9A for ; Wed, 17 Feb 2021 08:15:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231683AbhBQIPJ (ORCPT ); Wed, 17 Feb 2021 03:15:09 -0500 Received: from mx2.suse.de ([195.135.220.15]:40462 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231927AbhBQION (ORCPT ); Wed, 17 Feb 2021 03:14:13 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1613549607; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=mZOJ/UPZVM5QafRw9G6/ddz8ni+BbKdndoGQZhCbKHc=; b=g7fyRnyh8hvQSOAK41MnNTxYRy1Axsl3WryU6jpMDE2UlxQKdd/vUjPJcEo+cGFAceE7kR smDZN6XkiGwEpXmRmqckxsXa1jzZzGi9yEB1ebtDmjeb2cw9adilSR/1RdyjHnSDlyaWI7 u+ywtCLsev6QS0bQSM84Vy0ESjVGNCM= Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id CE6FEB923; Wed, 17 Feb 2021 08:13:26 +0000 (UTC) Date: Wed, 17 Feb 2021 09:13:24 +0100 From: Michal Hocko To: Mike Kravetz Cc: Muchun Song , Jonathan Corbet , Thomas Gleixner , mingo@redhat.com, bp@alien8.de, x86@kernel.org, hpa@zytor.com, dave.hansen@linux.intel.com, luto@kernel.org, Peter Zijlstra , viro@zeniv.linux.org.uk, Andrew Morton , paulmck@kernel.org, mchehab+huawei@kernel.org, pawan.kumar.gupta@linux.intel.com, Randy Dunlap , oneukum@suse.com, anshuman.khandual@arm.com, jroedel@suse.de, Mina Almasry , David Rientjes , Matthew Wilcox , Oscar Salvador , "Song Bao Hua (Barry Song)" , David Hildenbrand , HORIGUCHI =?utf-8?B?TkFPWUEo5aCA5Y+jIOebtOS5nyk=?= , Joao Martins , Xiongchun duan , linux-doc@vger.kernel.org, LKML , Linux Memory Management List , linux-fsdevel Subject: Re: [External] Re: [PATCH v15 4/8] mm: hugetlb: alloc the vmemmap pages associated with each HugeTLB page Message-ID: References: <29cdbd0f-dbc2-1a72-15b7-55f81000fa9e@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <29cdbd0f-dbc2-1a72-15b7-55f81000fa9e@oracle.com> Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org On Tue 16-02-21 11:44:34, Mike Kravetz wrote: [...] > If we are not going to do the allocations under the lock, then we will need > to either preallocate or take the workqueue approach. We can still drop the lock temporarily right? As we already do before calling destroy_compound_gigantic_page... -- Michal Hocko SUSE Labs