mm/memory-failure: convert try_memory_failure_hugetlb() to folios

mm/memory-failure: convert try_memory_failure_hugetlb() to folios

Use a struct folio rather than a head page in try_memory_failure_hugetlb.
This converts one user of SetHPageMigratable to the folio equivalent.

Link: https://lkml.kernel.org/r/20230112204608.80136-3-sidhartha.kumar@oracle.com
Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Acked-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>