linux-kernel - Re: [PATCH 1/4] mm: Introduce vm_uffd

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Message-ID: <aFlYdmBLWGP8KWmJ@x1.local>
Date: Mon, 23 Jun 2025 09:36:54 -0400
From: Peter Xu <peterx@...hat.com>
To: Mike Rapoport <rppt@...nel.org>
Cc: linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	Nikita Kalyazin <kalyazin@...zon.com>,
	Hugh Dickins <hughd@...gle.com>, Oscar Salvador <osalvador@...e.de>,
	Michal Hocko <mhocko@...e.com>,
	David Hildenbrand <david@...hat.com>,
	Muchun Song <muchun.song@...ux.dev>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Ujwal Kundur <ujwal.kundur@...il.com>,
	Suren Baghdasaryan <surenb@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Vlastimil Babka <vbabka@...e.cz>,
	"Liam R . Howlett" <Liam.Howlett@...cle.com>,
	James Houghton <jthoughton@...gle.com>,
	Lorenzo Stoakes <lorenzo.stoakes@...cle.com>,
	Axel Rasmussen <axelrasmussen@...gle.com>
Subject: Re: [PATCH 1/4] mm: Introduce vm_uffd_ops API

On Sun, Jun 22, 2025 at 10:28:04AM +0300, Mike Rapoport wrote:
> > +} vm_uffd_ops;
> > +#endif
> 
> Can't we define vm_uffd_ops in userfaultfd_k.h?
> 
> A forward declaration in mm.h should suffice and modules that want to use
> uffd can include userfaultfd_k.h.

Good point, I'll do that, thanks!

-- 
Peter Xu