[PATCH v4 1/3] mm: pagewalk: simplify hugepage boundary calculation

[Sahil Chandna]

Replace hugepage boundary computation with ALIGN() helper instead of
an open coded expression. This helps to improves code readability.

This was flagged by Coccinelle (misc/minmax.cocci) as an opportunity
to use min(), after which the boundary computation was updated following
review suggestions.

Found by: make coccicheck MODE=report M=mm/
No functional change intended.

Acked-by: David Hildenbrand (Red Hat) <david@xxxxxxxxxx>
Suggested-by: David Hildenbrand (Red Hat) <david@xxxxxxxxxx>
Suggested-by: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Suggested-by: David Laight <david.laight.linux@xxxxxxxxx>
Signed-off-by: Sahil Chandna <chandna.sahil@xxxxxxxxx>
---
 mm/pagewalk.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/mm/pagewalk.c b/mm/pagewalk.c
index 9f91cf85a5be..9fd59d517f37 100644
--- a/mm/pagewalk.c
+++ b/mm/pagewalk.c
@@ -312,8 +312,7 @@ static int walk_pgd_range(unsigned long addr, unsigned long end,
 static unsigned long hugetlb_entry_end(struct hstate *h, unsigned long addr,
 				       unsigned long end)
 {
-	unsigned long boundary = (addr & huge_page_mask(h)) + huge_page_size(h);
-	return boundary < end ? boundary : end;
+	return min(ALIGN(addr, huge_page_size(h)), end);
 }
 
 static int walk_hugetlb_range(unsigned long addr, unsigned long end,
-- 
2.50.1