mm/huge_memory: simplify pgtable deposit detection

Whether a PMD has a deposited PTE page table only depends on whether the
architecture requires deposits or the VMA is anonymous.

Implement this rule directly in vma_has_deposited_pgtable(), avoiding
mistaking a non-anonymous raw PFN PMD for one with a deposit and
attempting to withdraw a page table that was never deposited.

There is no known in-tree workload that triggers this.  Mostly a
defensive/simplifying change.

Link: https://lore.kernel.org/20260917054015.23553-1-lance.yang@linux.dev
Signed-off-by: Lance Yang <lance.yang@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Suggested-by: David Hildenbrand <david@kernel.org>
Reviewed-by: Kiryl Shutsemau (Meta) <kas@kernel.org>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Acked-by: Zi Yan <ziy@nvidia.com>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Ryan Roberts <ryan.roberts@arm.com>

0 files changed, 0 insertions, 0 deletions