Re: [RFC PATCH 01/57] mm: add pte_folio()
From: "David Hildenbrand (Arm)" <david@kernel.org>
Date: 2026-08-19 07:57:24
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bpf, linux-kselftest, linux-mm, lkml
On 8/18/26 22:04, Rik van Riel wrote:
On Tue, 2026-08-18 at 20:13 +0200, David Hildenbrand (Arm) wrote:quoted
On 8/18/26 18:38, Rik van Riel wrote:quoted
Oh nice, this could clean up some things in the get_user_pages code too, when we get around to tech debt there.We really need the page in GUP code ...Ugh, indeed. COW can create "holes" in the middle of a large folio, so even __access_remote_vm() will continue to need pages. I guess we'll continue to look up both page and folio in that code, then :/
Yeah, and it will be more fun once we decouple pages from folios, because then a page_folio() will be allowed to fail. (more GUP work, including in GUP users, is required to support that) -- Cheers, David