X-Git-Url: https://git.codelabs.ch/?p=muen%2Flinux.git;a=blobdiff_plain;f=mm%2Fpage_idle.c;h=e412a63b2b74f7820298751e1cf382fe90c48005;hp=0a49374e693194504e715be8e54489f3eb1db2f1;hb=f0849ac0b8e072073ec5fcc7fadd05a77434364e;hpb=c9e97a1997fbf3a1d18d4065c2ca381f0704d7e5

diff --git a/mm/page_idle.c b/mm/page_idle.c
index 0a49374e6931..e412a63b2b74 100644
--- a/mm/page_idle.c
+++ b/mm/page_idle.c
@@ -65,11 +65,15 @@ static bool page_idle_clear_pte_refs_one(struct page *page,
 	while (page_vma_mapped_walk(&pvmw)) {
 		addr = pvmw.address;
 		if (pvmw.pte) {
-			referenced = ptep_clear_young_notify(vma, addr,
-					pvmw.pte);
+			/*
+			 * For PTE-mapped THP, one sub page is referenced,
+			 * the whole THP is referenced.
+			 */
+			if (ptep_clear_young_notify(vma, addr, pvmw.pte))
+				referenced = true;
 		} else if (IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE)) {
-			referenced = pmdp_clear_young_notify(vma, addr,
-					pvmw.pmd);
+			if (pmdp_clear_young_notify(vma, addr, pvmw.pmd))
+				referenced = true;
 		} else {
 			/* unexpected pmd-mapped page? */
 			WARN_ON_ONCE(1);