From d8c6546b1aea843fbeb4d54a1202f1adda6504be Mon Sep 17 00:00:00 2001
From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Date: Mon, 23 Sep 2019 15:34:30 -0700
Subject: mm: introduce compound_nr()

Replace 1 << compound_order(page) with compound_nr(page).  Minor
improvements in readability.

Link: http://lkml.kernel.org/r/20190721104612.19120-4-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 mm/util.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'mm/util.c')

diff --git a/mm/util.c b/mm/util.c
index e6351a80f248..bab284d69c8c 100644
--- a/mm/util.c
+++ b/mm/util.c
@@ -521,7 +521,7 @@ bool page_mapped(struct page *page)
 		return true;
 	if (PageHuge(page))
 		return false;
-	for (i = 0; i < (1 << compound_order(page)); i++) {
+	for (i = 0; i < compound_nr(page); i++) {
 		if (atomic_read(&page[i]._mapcount) >= 0)
 			return true;
 	}
-- 
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