Messages in this thread Patch in this message | | | From | Zi Yan <> | Subject | [PATCH v2 5/5] mips: use nth_page() in place of direct struct page manipulation. | Date | Wed, 6 Sep 2023 11:03:09 -0400 |
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From: Zi Yan <ziy@nvidia.com>
__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.
Fixes: 15fa3e8e3269 ("mips: implement the new page table range API") Cc: <stable@vger.kernel.org> Signed-off-by: Zi Yan <ziy@nvidia.com> --- arch/mips/mm/cache.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/mips/mm/cache.c b/arch/mips/mm/cache.c index 02042100e267..7f830634dbe7 100644 --- a/arch/mips/mm/cache.c +++ b/arch/mips/mm/cache.c @@ -117,7 +117,7 @@ void __flush_dcache_pages(struct page *page, unsigned int nr) * 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); } -- 2.40.1
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