From: Ma Wupeng <mawupeng1@xxxxxxxxxx> Empty check for plist_node is checked in add_to_avail_list and plist_add. Drop the duplicate one in add_to_avail_list. Signed-off-by: Ma Wupeng <mawupeng1@xxxxxxxxxx> --- mm/swapfile.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/mm/swapfile.c b/mm/swapfile.c index 274bbf797480..879cb80bf37b 100644 --- a/mm/swapfile.c +++ b/mm/swapfile.c @@ -713,10 +713,8 @@ static void add_to_avail_list(struct swap_info_struct *p) int nid; spin_lock(&swap_avail_lock); - for_each_node(nid) { - WARN_ON(!plist_node_empty(&p->avail_lists[nid])); + for_each_node(nid) plist_add(&p->avail_lists[nid], &swap_avail_heads[nid]); - } spin_unlock(&swap_avail_lock); } -- 2.25.1