[PATCH 04/45] mm/pagewalk: Only call pud_entry when we have a pud leaf

[Oscar Salvador]

Check first whether the pud is leaf one before trying to call pud_entry.

Signed-off-by: Oscar Salvador <osalvador@xxxxxxx>
---
 mm/pagewalk.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/pagewalk.c b/mm/pagewalk.c
index eba705def9a0..d93e77411482 100644
--- a/mm/pagewalk.c
+++ b/mm/pagewalk.c
@@ -155,7 +155,7 @@ static int walk_pud_range(p4d_t *p4d, unsigned long addr, unsigned long end,
 
 		walk->action = ACTION_SUBTREE;
 
-		if (ops->pud_entry)
+		if (ops->pud_entry && pud_leaf(*pud))
 			err = ops->pud_entry(pud, addr, next, walk);
 		if (err)
 			break;
-- 
2.26.2