mm, hugetlb: remove redundant list_empty check in gather_surplus_pages()

If list is empty, list_for_each_entry_safe() doesn't do anything.  So,
this check is redundant.  Remove it.

Signed-off-by: Joonsoo Kim <[email protected]>
Acked-by: Michal Hocko <[email protected]>
Reviewed-by: Wanpeng Li <[email protected]>
Reviewed-by: Aneesh Kumar K.V <[email protected]>
Acked-by: Hillf Danton <[email protected]>
Cc: Naoya Horiguchi <[email protected]>
Cc: Wanpeng Li <[email protected]>
Cc: Rik van Riel <[email protected]>
Cc: Mel Gorman <[email protected]>
Cc: "Aneesh Kumar K.V" <[email protected]>
Cc: KAMEZAWA Hiroyuki <[email protected]>
Cc: Hugh Dickins <[email protected]>
Cc: Davidlohr Bueso <[email protected]>
Cc: David Gibson <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

1 files changed, 2 insertions, 5 deletions

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 08b7595fe3c1..a13be48b818b 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -1037,11 +1037,8 @@ free:
 	spin_unlock(&hugetlb_lock);
 
 	/* Free unnecessary surplus pages to the buddy allocator */
-	if (!list_empty(&surplus_list)) {
-		list_for_each_entry_safe(page, tmp, &surplus_list, lru) {
-			put_page(page);
-		}
-	}
+	list_for_each_entry_safe(page, tmp, &surplus_list, lru)
+		put_page(page);
 	spin_lock(&hugetlb_lock);
 
 	return ret;