linux-kernel - Re: [PATCH RESEND] slub: Remove userspace notifier for cache add/remove

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Message-ID: <alpine.DEB.2.22.394.2004231250480.248617@chino.kir.corp.google.com>
Date:   Thu, 23 Apr 2020 12:51:00 -0700 (PDT)
From:   David Rientjes <rientjes@...gle.com>
To:     Michal Koutný <mkoutny@...e.com>
cc:     akpm@...ux-foundation.org, Christoph Lameter <cl@...ux.com>,
        Pekka Enberg <penberg@...nel.org>,
        Joonsoo Kim <iamjoonsoo.kim@....com>, mhocko@...nel.org,
        vbabka@...e.cz, linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH RESEND] slub: Remove userspace notifier for cache
 add/remove

On Thu, 23 Apr 2020, Michal Koutný wrote:

> From: Christoph Lameter <cl@...ux.com>
> 
> I came across some unnecessary uevents once again which reminded me
> this. The patch seems to be lost in the leaves of the original
> discussion [1], so resending.
> 
> [1] https://lore.kernel.org/r/alpine.DEB.2.21.2001281813130.745@www.lameter.com
> 
> 8<---
> Kmem caches are internal kernel structures so it is strange that
> userspace notifiers would be needed. And I am not aware of any use
> of these notifiers. These notifiers may just exist because in the
> initial slub release the sysfs code was copied from another
> subsystem.
> 
> Signed-off-by: Christoph Lameter <cl@...ux.com>
> Acked-by: Vlastimil Babka <vbabka@...e.cz>
> Acked-by: Michal Koutný <mkoutny@...e.com>

Acked-by: David Rientjes <rientjes@...gle.com>