From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-yk0-f173.google.com (mail-yk0-f173.google.com [209.85.160.173]) by kanga.kvack.org (Postfix) with ESMTP id E1AB66B0257 for ; Mon, 9 Nov 2015 14:33:00 -0500 (EST) Received: by ykek133 with SMTP id k133so283692587yke.2 for ; Mon, 09 Nov 2015 11:33:00 -0800 (PST) Received: from mail-yk0-x234.google.com (mail-yk0-x234.google.com. [2607:f8b0:4002:c07::234]) by mx.google.com with ESMTPS id o133si8943132ywb.309.2015.11.09.11.32.58 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 09 Nov 2015 11:32:58 -0800 (PST) Received: by ykdr82 with SMTP id r82so8405835ykd.3 for ; Mon, 09 Nov 2015 11:32:58 -0800 (PST) Date: Mon, 9 Nov 2015 14:32:53 -0500 From: Tejun Heo Subject: Re: [PATCH 0/5] memcg/kmem: switch to white list policy Message-ID: <20151109193253.GC28507@mtj.duckdns.org> References: <20151109140832.GE8916@dhcp22.suse.cz> <20151109182840.GJ31308@esperanza> <20151109185401.GB28507@mtj.duckdns.org> <20151109192747.GN31308@esperanza> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20151109192747.GN31308@esperanza> Sender: owner-linux-mm@kvack.org List-ID: To: Vladimir Davydov Cc: Michal Hocko , Andrew Morton , Johannes Weiner , Greg Thelen , linux-mm@kvack.org, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org Hello, Vladmir. On Mon, Nov 09, 2015 at 10:27:47PM +0300, Vladimir Davydov wrote: > Of course, we could rework slab merging so that kmem_cache_create > returned a new dummy cache even if it was actually merged. Such a cache > would point to the real cache, which would be used for allocations. This > wouldn't limit slab merging, but this would add one more dereference to > alloc path, which is even worse. Hmmm, this could be me not really understanding but why can't we let all slabs to be merged regardless of SLAB_ACCOUNT flag for root memcg and point to per-memcg slabs (may be merged among them but most likely won't matter) for !root. We're indirecting once anyway, no? Thanks. -- tejun -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org