Messages in this thread | | | Date | Wed, 2 Aug 2023 16:34:21 +0100 | From | Mel Gorman <> | Subject | Re: [PATCH v2 6/8] mm/huge_memory: remove stale NUMA hinting comment from follow_trans_huge_pmd() |
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On Tue, Aug 01, 2023 at 02:48:42PM +0200, David Hildenbrand wrote: > That comment for pmd_protnone() was added in commit 2b4847e73004 > ("mm: numa: serialise parallel get_user_page against THP migration"), which > noted: > > THP does not unmap pages due to a lack of support for migration > entries at a PMD level. This allows races with get_user_pages > > Nowadays, we do have PMD migration entries, so the comment no longer > applies. Let's drop it. > > Signed-off-by: David Hildenbrand <david@redhat.com>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
-- Mel Gorman SUSE Labs
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