linux-kernel - Re: [PATCH 1/2] huge_mm.h: is_huge_zero

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Message-ID: <CAKPOu+8O1GroB0KDGcwE2ByugaTm_MsoU2c5NQAbk1NpYOo8Gg@mail.gmail.com>
Date: Wed, 27 Aug 2025 17:05:23 +0200
From: Max Kellermann <max.kellermann@...os.com>
To: David Hildenbrand <david@...hat.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>, lorenzo.stoakes@...cle.com, ziy@...dia.com, 
	baolin.wang@...ux.alibaba.com, Liam.Howlett@...cle.com, npache@...hat.com, 
	ryan.roberts@....com, dev.jain@....com, baohua@...nel.org, 
	shikemeng@...weicloud.com, kasong@...cent.com, nphamcs@...il.com, 
	bhe@...hat.com, chrisl@...nel.org, linux-mm@...ck.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] huge_mm.h: is_huge_zero_folio(NULL) should return false

On Wed, Aug 27, 2025 at 4:34 PM David Hildenbrand <david@...hat.com> wrote:
> VM_WARN_ON_ONCE(!folio);
>
> Should allow for catching such bugs without causing any runtime overhead
> on non-debug kernels.

Aye. I have posted v2 of this patch and I have dropped the
folios_put_refs() patch.