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Date: Tue, 15 Jul 2025 16:31:26 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: David Hildenbrand <david@redhat.com>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
 xen-devel@lists.xenproject.org, linux-fsdevel@vger.kernel.org,
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 <sstabellini@kernel.org>, Oleksandr Tyshchenko
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 <pfalcato@suse.de>, Hugh Dickins <hughd@google.com>, Oscar Salvador
 <osalvador@suse.de>, Lance Yang <lance.yang@linux.dev>
Subject: Re: [PATCH v1 0/9] mm: vm_normal_page*() improvements
Message-Id: <20250715163126.7bcaca25364dd68835bd9c8b@linux-foundation.org>
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On Tue, 15 Jul 2025 15:23:41 +0200 David Hildenbrand <david@redhat.com> wrote:

> Based on mm/mm-new. I dropped the CoW PFNMAP changes for now, still
> working on a better way to sort all that out cleanly.
> 
> Cleanup and unify vm_normal_page_*() handling, also marking the
> huge zerofolio as special in the PMD. Add+use vm_normal_page_pud() and
> cleanup that XEN vm_ops->find_special_page thingy.
> 
> There are plans of using vm_normal_page_*() more widely soon.
> 
> Briefly tested on UML (making sure vm_normal_page() still works as expected
> without pte_special() support) and on x86-64 with a bunch of tests.

When I was but a wee little bairn, my mother would always tell me
"never merge briefly tested patches when you're at -rc6".  But three
weeks in -next should shake things out.

However the series rejects due to the is_huge_zero_pmd ->
is_huge_zero_pfn changes in Luiz's "mm: introduce snapshot_page() v3"
series, so could we please have a redo against present mm-new?