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Date: Tue, 8 Sep 2026 18:45:16 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: Muchun Song <songmuchun@bytedance.com>
Cc: David Hildenbrand <david@kernel.org>, Oscar Salvador
 <osalvador@suse.de>, Madhavan Srinivasan <maddy@linux.ibm.com>, Michael
 Ellerman <mpe@ellerman.id.au>, Jonathan Corbet <corbet@lwn.net>,
 linux-mm@kvack.org, linux-kernel@vger.kernel.org,
 linuxppc-dev@lists.ozlabs.org, linux-doc@vger.kernel.org, Muchun Song
 <muchun.song@linux.dev>, Lorenzo Stoakes <ljs@kernel.org>, Mike Rapoport
 <rppt@kernel.org>, Qi Zheng <qi.zheng@linux.dev>, Nicholas Piggin
 <npiggin@gmail.com>, Christophe Leroy <chleroy@kernel.org>, Randy Dunlap
 <rdunlap@infradead.org>
Subject: Re: [PATCH v2 00/11] mm: Switch device DAX to section-based vmemmap
 optimization
Message-Id: <20260908184516.c026438445ff3db78ee120fa@linux-foundation.org>
In-Reply-To: <20260908030335.96549-1-songmuchun@bytedance.com>
References: <20260908030335.96549-1-songmuchun@bytedance.com>
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On Tue,  8 Sep 2026 11:03:24 +0800 Muchun Song <songmuchun@bytedance.com> wrote:

> This series is split out from the earlier, larger series "mm: Generalize
> HVO for HugeTLB and device DAX" [1]. While the parent series generalizes
> vmemmap optimization across HugeTLB and device DAX, this subset addresses
> a single, self-contained step: switching device DAX to the section-based
> sparse-vmemmap optimization infrastructure introduced for HugeTLB.
> 
> ...
> 
> This is intended to be the third smaller step toward the broader HVO
> generalization. The wider HVO consolidation between HugeTLB and device
> DAX is left for follow-up series.

Thanks both, I'll add it to mm.git's mm-new branch.