linux-kernel - Re: [PATCH v2] slab: Warn on duplicate cache names when DEBUG

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Message-ID: <ad85f6ee-28a9-b558-2219-5a6e49e17b75@gentwo.org>
Date: Wed, 7 Aug 2024 10:32:08 -0700 (PDT)
From: "Christoph Lameter (Ampere)" <cl@...two.org>
To: Pedro Falcato <pedro.falcato@...il.com>
cc: Pekka Enberg <penberg@...nel.org>, David Rientjes <rientjes@...gle.com>, 
    Joonsoo Kim <iamjoonsoo.kim@....com>, 
    Andrew Morton <akpm@...ux-foundation.org>, 
    Vlastimil Babka <vbabka@...e.cz>, 
    Roman Gushchin <roman.gushchin@...ux.dev>, 
    Hyeonggon Yoo <42.hyeyoo@...il.com>, linux-mm@...ck.org, 
    linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] slab: Warn on duplicate cache names when DEBUG_VM=y

On Wed, 7 Aug 2024, Pedro Falcato wrote:

> Duplicate slab cache names can create havoc for userspace tooling that
> expects slab cache names to be unique. This is a reasonable expectation.

Yes that is reasonable. This is done during slab creation and so is not a 
performance sensitive operation. The sanity check could be done even 
without CONFIG_DEBUG_VM

Acked-by: Christoph Lameter <cl@...ux.com>