linux-kernel - Re: [PATCH v2 1/2] mm, slab: restore NUMA policy support for large kmalloc

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Message-ID: <a96ec09c-03e6-fcec-58c5-b9398d2333e4@gentwo.org>
Date: Mon, 2 Jun 2025 09:52:10 -0700 (PDT)
From: "Christoph Lameter (Ampere)" <cl@...two.org>
To: Vlastimil Babka <vbabka@...e.cz>
cc: David Rientjes <rientjes@...gle.com>, 
    Andrew Morton <akpm@...ux-foundation.org>, 
    Roman Gushchin <roman.gushchin@...ux.dev>, 
    Harry Yoo <harry.yoo@...cle.com>, Matthew Wilcox <willy@...radead.org>, 
    linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/2] mm, slab: restore NUMA policy support for large
 kmalloc

On Mon, 2 Jun 2025, Vlastimil Babka wrote:

> The slab allocator observes the task's NUMA policy in various places
> such as allocating slab pages. Large kmalloc() allocations used to do
> that too, until an unintended change by c4cab557521a ("mm/slab_common:
> cleanup kmalloc_large()") resulted in ignoring mempolicy and just
> preferring the local node. Restore the NUMA policy support.

Acked-by: Christoph Lameter (Ampere) <cl@...two.org>