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Date: Thu, 10 Sep 2026 15:20:26 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: Muchun Song <muchun.song@linux.dev>
Cc: Huaisheng Ye <yehuaisheng@open-hieco.net>, osalvador@suse.de,
 linux-mm@kvack.org, david@kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mm/hugetlb: account for allowed nodes when gathering
 surplus pages
Message-Id: <20260910152026.5bcf5c5d7f1ecdcb0147ceaf@linux-foundation.org>
In-Reply-To: <8A0F6014-4E2C-4F07-9732-2DF32418B986@linux.dev>
References: <20260909074642.7308-1-yehuaisheng@open-hieco.net>
	<8A0F6014-4E2C-4F07-9732-2DF32418B986@linux.dev>
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On Thu, 10 Sep 2026 16:48:56 +0800 Muchun Song <muchun.song@linux.dev> wrote:

> > This fixes hugetlb mappings when, for example, a task runs with
> > MPOL_BIND on Node 1 while the existing free huge pages are on Node 0.
> > 
> > Similar issue also could be found in ltp if the free pages of global pool
> > reside outside the nodes allowed by the application.
> >  # cd ltp/testcases/kernel/mem/hugetlb/hugemmap/
> >  # numactl --cpunodebind=0 --membind=1 ./hugemmap10
> > 
> > Signed-off-by: Huaisheng Ye <yehuaisheng@open-hieco.net>
> 
> Acked-by: Muchun Song <muchun.song@linux.dev>

Should we backport this?

If so, a Fixes: target would be helpful.