Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S932247AbbDHSYb (ORCPT <rfc822;w@1wt.eu>);
	Wed, 8 Apr 2015 14:24:31 -0400
Received: from resqmta-ch2-11v.sys.comcast.net ([69.252.207.43]:46240 "EHLO
	resqmta-ch2-11v.sys.comcast.net" rhost-flags-OK-OK-OK-OK)
	by vger.kernel.org with ESMTP id S1753483AbbDHSY3 (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Wed, 8 Apr 2015 14:24:29 -0400
Date: Wed, 8 Apr 2015 13:24:26 -0500 (CDT)
From: Christoph Lameter <cl@linux.com>
X-X-Sender: cl@gentwo.org
To: Vladimir Davydov <vdavydov@parallels.com>
cc: Andrew Morton <akpm@linux-foundation.org>,
        Johannes Weiner <hannes@cmpxchg.org>, Michal Hocko <mhocko@suse.cz>,
        Pekka Enberg <penberg@kernel.org>,
        David Rientjes <rientjes@google.com>,
        Joonsoo Kim <iamjoonsoo.kim@lge.com>, linux-mm@kvack.org,
        cgroups@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH -mm] slab: use cgroup ino for naming per memcg caches
In-Reply-To: <20150408181911.GA18199@esperanza>
Message-ID: <alpine.DEB.2.11.1504081323390.20694@gentwo.org>
References: <1428414798-12932-1-git-send-email-vdavydov@parallels.com> <20150407133819.993be7a53a3aa16311aba1f5@linux-foundation.org> <20150408095404.GC10286@esperanza> <alpine.DEB.2.11.1504080845200.13120@gentwo.org> <20150408181911.GA18199@esperanza>
Content-Type: TEXT/PLAIN; charset=US-ASCII
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org
Content-Length: 879
Lines: 19

On Wed, 8 Apr 2015, Vladimir Davydov wrote:

> Yeah, I think cache merging is a good argument for grouping memcg caches
> under /sys/kernel/slab/<slab-name>/cgroup/. We cannot maintain symlinks
> for merged memcg caches, because when a memcg cache is created we do not
> have names of caches the new cache is merged with. If memcg caches were
> listed under /sys/kernel/slab/ along with global ones, absence of the
> symlinks would lead to confusion.

The point of the unique name creation is to not have to use the name given
by the user for the slab. You can generate a unique identifier and use
that as a target for the symlink.


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/