1 files changed, 17 insertions, 0 deletions
diff --git a/mm/util.c b/mm/util.c
index c6ad21ee6695..bc488f0121a7 100644
--- a/mm/util.c
+++ b/mm/util.c
@@ -844,6 +844,23 @@ void folio_copy(struct folio *dst, struct folio *src)
 }
 EXPORT_SYMBOL(folio_copy);
 
+int folio_mc_copy(struct folio *dst, struct folio *src)
+{
+	long nr = folio_nr_pages(src);
+	long i = 0;
+
+	for (;;) {
+		if (copy_mc_highpage(folio_page(dst, i), folio_page(src, i)))
+			return -EHWPOISON;
+		if (++i == nr)
+			break;
+		cond_resched();
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(folio_mc_copy);
+
 int sysctl_overcommit_memory __read_mostly = OVERCOMMIT_GUESS;
 int sysctl_overcommit_ratio __read_mostly = 50;
 unsigned long sysctl_overcommit_kbytes __read_mostly;