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 8A49BC7EE23 for ; Thu, 8 Jun 2023 08:00:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234210AbjFHIAL (ORCPT ); Thu, 8 Jun 2023 04:00:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49310 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234431AbjFHH77 (ORCPT ); Thu, 8 Jun 2023 03:59:59 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 23B622D66 for ; Thu, 8 Jun 2023 00:59:33 -0700 (PDT) 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 07E2C649E8 for ; Thu, 8 Jun 2023 07:59:32 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E548BC433D2; Thu, 8 Jun 2023 07:59:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1686211171; bh=QZuWevEGbS7eH2QLlHDqrU/R3vNNbwBkMxJ4axuXrX0=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=dF3xz25m+LQkLdlwXOwbZZjt1/wv+xR4bFflH2QjCLC+7NriFigEBzeRodOtmVBhJ v2yYDfpCcf02TcZrie+aIln2HvEM9QmHJcxtTKElYUGlHKrf9CRezjgXJ9GKaYjbtg czaVrAG6gxS/9Ulo3AwVRZbPDlD6x9AfQYMDu23I= Date: Thu, 8 Jun 2023 09:59:28 +0200 From: Greg Kroah-Hartman To: Andrew Morton Cc: Mike Kravetz , Gerd Hoffmann , Junxiao Chang , kirill.shutemov@linux.intel.com, mhocko@suse.com, jmarchan@redhat.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, muchun.song@linux.dev, Vivek Kasireddy , Dongwon Kim , James Houghton , dri-devel@lists.freedesktop.org Subject: Re: [PATCH] mm: fix hugetlb page unmap count balance issue Message-ID: <2023060803-trailing-ladder-2d53@gregkh> References: <20230512072036.1027784-1-junxiao.chang@intel.com> <20230512232947.GA3927@monkey> <20230515170259.GA3848@monkey> <20230516223440.GA30624@monkey> <20230607120312.6da5cea7677ec1a3da35b92c@linux-foundation.org> <20230607205310.GA4122@monkey> <20230607140001.6685b0a058511f125a005da4@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230607140001.6685b0a058511f125a005da4@linux-foundation.org> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jun 07, 2023 at 02:00:01PM -0700, Andrew Morton wrote: > On Wed, 7 Jun 2023 13:53:10 -0700 Mike Kravetz wrote: > > > > > > > BUGs aren't good. Can we please find a way to push this along? > > > > > > Have we heard anything from any udmabuf people? > > > > > > > I have not heard anything. When this issue popped up, it took me by surprise. > > > > udmabuf maintainer (Gerd Hoffmann), the people who added hugetlb support and > > the list where udmabuf was developed (dri-devel@lists.freedesktop.org) have > > been on cc. > > Maybe Greg can suggest a way forward. I'm guessing that no one is using this code then, so why don't we just remove it entirely? thanks, greg k-h