Merge tag 'block-5.14-2021-08-07' of git://git.kernel.dk/linux-block

[linux-2.6-microblaze.git] / mm / util.c

diff --git a/mm/util.c b/mm/util.c
index 99c6cc7..9043d03 100644 (file)
--- a/mm/util.c
+++ b/mm/util.c
@@ -731,6 +731,16 @@ int __page_mapcount(struct page *page)
 }
 EXPORT_SYMBOL_GPL(__page_mapcount);
 
+void copy_huge_page(struct page *dst, struct page *src)
+{
+       unsigned i, nr = compound_nr(src);
+
+       for (i = 0; i < nr; i++) {
+               cond_resched();
+               copy_highpage(nth_page(dst, i), nth_page(src, i));
+       }
+}
+
 int sysctl_overcommit_memory __read_mostly = OVERCOMMIT_GUESS;
 int sysctl_overcommit_ratio __read_mostly = 50;
 unsigned long sysctl_overcommit_kbytes __read_mostly;