The quilt patch titled Subject: mips: use nth_page() in place of direct struct page manipulation has been removed from the -mm tree. Its filename was mips-use-nth_page-in-place-of-direct-struct-page-manipulation.patch

This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------ From: Zi Yan ziy@nvidia.com Subject: mips: use nth_page() in place of direct struct page manipulation Date: Wed, 13 Sep 2023 16:12:48 -0400

__flush_dcache_pages() is called during hugetlb migration via migrate_pages() -> migrate_hugetlbs() -> unmap_and_move_huge_page() -> move_to_new_folio() -> flush_dcache_folio(). And with hugetlb and without sparsemem vmemmap, struct page is not guaranteed to be contiguous beyond a section. Use nth_page() instead.

Without the fix, a wrong address might be used for data cache page flush. No bug is reported. The fix comes from code inspection.

Link: https://lkml.kernel.org/r/20230913201248.452081-6-zi.yan@sent.com Fixes: 15fa3e8e3269 ("mips: implement the new page table range API") Signed-off-by: Zi Yan ziy@nvidia.com Cc: David Hildenbrand david@redhat.com Cc: Matthew Wilcox (Oracle) willy@infradead.org Cc: Mike Kravetz mike.kravetz@oracle.com Cc: Mike Rapoport (IBM) rppt@kernel.org Cc: Muchun Song songmuchun@bytedance.com Cc: Thomas Bogendoerfer tsbogend@alpha.franken.de Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org ---

arch/mips/mm/cache.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/mips/mm/cache.c~mips-use-nth_page-in-place-of-direct-struct-page-manipulation +++ a/arch/mips/mm/cache.c @@ -117,7 +117,7 @@ void __flush_dcache_pages(struct page *p * get faulted into the tlb (and thus flushed) anyways. */ for (i = 0; i < nr; i++) { - addr = (unsigned long)kmap_local_page(page + i); + addr = (unsigned long)kmap_local_page(nth_page(page, i)); flush_data_cache_page(addr); kunmap_local((void *)addr); } _

Patches currently in -mm which might be from ziy@nvidia.com are