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 92693ECAAD3 for ; Mon, 5 Sep 2022 23:47:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231828AbiIEXry (ORCPT ); Mon, 5 Sep 2022 19:47:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44812 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229546AbiIEXrx (ORCPT ); Mon, 5 Sep 2022 19:47:53 -0400 Received: from out2.migadu.com (out2.migadu.com [188.165.223.204]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F0C99459A6; Mon, 5 Sep 2022 16:47:51 -0700 (PDT) Date: Mon, 5 Sep 2022 19:46:49 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1662421670; h=from:from:reply-to:subject:subject: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=aV58+8xM7vZiC+ARHrNwrMa2NOiuYoscS5I3pyUTgBc=; b=g/enLV1JWMwpy1AyXIuK4kHtWcmra4fxFsTUcPxQ3hUWakh3HZFxjFpnVO9NhK3wjScc9f irWUYVuNDjD8ENf7YkMd2RUCrJ2/ViqqPY2BhztGYYDjlWUSm+DOVdUpVQh8M2jqIup2FQ tYI+IaNim7kGQArVz8zbq85hmG2o2lA= X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Kent Overstreet To: Michal Hocko Cc: Suren Baghdasaryan , Mel Gorman , Peter Zijlstra , Andrew Morton , Vlastimil Babka , Johannes Weiner , Roman Gushchin , Davidlohr Bueso , Matthew Wilcox , "Liam R. Howlett" , David Vernet , Juri Lelli , Laurent Dufour , Peter Xu , David Hildenbrand , Jens Axboe , mcgrof@kernel.org, masahiroy@kernel.org, nathan@kernel.org, changbin.du@intel.com, ytcoode@gmail.com, Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Benjamin Segall , Daniel Bristot de Oliveira , Valentin Schneider , Christopher Lameter , Pekka Enberg , Joonsoo Kim , 42.hyeyoo@gmail.com, Alexander Potapenko , Marco Elver , Dmitry Vyukov , Shakeel Butt , Muchun Song , arnd@arndb.de, jbaron@akamai.com, David Rientjes , Minchan Kim , Kalesh Singh , kernel-team , linux-mm , iommu@lists.linux.dev, kasan-dev@googlegroups.com, io-uring@vger.kernel.org, linux-arch@vger.kernel.org, xen-devel@lists.xenproject.org, linux-bcache@vger.kernel.org, linux-modules@vger.kernel.org, LKML Subject: Re: [RFC PATCH 00/30] Code tagging framework and applications Message-ID: <20220905234649.525vorzx27ybypsn@kmo-framework> References: <20220831084230.3ti3vitrzhzsu3fs@moria.home.lan> <20220831101948.f3etturccmp5ovkl@suse.de> <20220831190154.qdlsxfamans3ya5j@moria.home.lan> <20220901201502.sn6223bayzwferxv@moria.home.lan> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Migadu-Flow: FLOW_OUT X-Migadu-Auth-User: linux.dev Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org On Mon, Sep 05, 2022 at 10:49:38AM +0200, Michal Hocko wrote: > This is really my main concern about this whole work. Not only it adds a > considerable maintenance burden to the core MM because [citation needed] > it adds on top of > our existing allocator layers complexity but it would need to spread beyond > MM to be useful because it is usually outside of MM where leaks happen. If you want the tracking to happen at a different level of the call stack, just call _kmalloc() directly and call alloc_tag_add()/sub() yourself.