mm: add folio_last_cpupid()

Add folio_last_cpupid() wrapper, which is required to convert
page_cpupid_last() to folio vertion later in the series.

Link: https://lkml.kernel.org/r/20231018140806.2783514-3-wangkefeng.wang@huawei.comSigned-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Huang Ying <ying.huang@intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Vincent Guittot <vincent.guittot@linaro.org>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

include/linux/mm.h

@@ -1796,6 +1796,11 @@ static inline void vma_set_access_pid_bit(struct vm_area_struct *vma)
 }
 #endif /* CONFIG_NUMA_BALANCING */
 
+static inline int folio_last_cpupid(struct folio *folio)
+{
+	return page_cpupid_last(&folio->page);
+}
+
 #if defined(CONFIG_KASAN_SW_TAGS) || defined(CONFIG_KASAN_HW_TAGS)
 
 /*