add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/fs/proc/task_mmu.c
..
..
@@ -774,9 +774,7 @@
774
774
 			page = device_private_entry_to_page(swpent);
775
775
 	}
776
776
 	if (page) {
777
-		int mapcount = page_mapcount(page);
778
-
779
-		if (mapcount >= 2)
777
+		if (page_mapcount(page) >= 2 || hugetlb_pmd_shared(pte))
780
778
 			mss->shared_hugetlb += huge_page_size(hstate_vma(vma));
781
779
 		else
782
780
 			mss->private_hugetlb += huge_page_size(hstate_vma(vma));