[PATCH 10/11] PageSlab: eliminate unnecessary compound_head() call in mm/usercopy

[Johannes Weiner]

Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx>
---
 mm/usercopy.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/usercopy.c b/mm/usercopy.c
index 924e236522da..b3de3c4eefba 100644
--- a/mm/usercopy.c
+++ b/mm/usercopy.c
@@ -235,7 +235,7 @@ static inline void check_heap_object(const void *ptr, unsigned long n,
 	 */
 	page = compound_head(kmap_to_page((void *)ptr));
 
-	if (PageSlab(compound_head(page))) {
+	if (PageSlab(page)) {
 		/* Check slab allocator for flags and size. */
 		__check_heap_object(ptr, n, page, to_user);
 	} else {
-- 
2.32.0