mm/rmap.c: use the pra.mapcount to do the check

We have the pra.mapcount already, and there is no need to call the page_mapped() which may do some complicated computing for compound page. Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Huang Shijie <[email protected]> Acked-by: Kirill A. Shutemov <[email protected]> Cc: Mike Kravetz <[email protected]> Cc: Rik van Riel <[email protected]> Cc: Joonsoo Kim <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
ambv · May 14, 2019 · 059d844 · 059d844
1 parent cfcbfb1
commit 059d844
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/mm/rmap.c b/mm/rmap.c
@@ -850,7 +850,7 @@ int page_referenced(struct page *page,
 	};
 
 	*vm_flags = 0;
-	if (!page_mapped(page))
+	if (!pra.mapcount)
 		return 0;
 
 	if (!page_rmapping(page))