[PATCH -next] mm: memcg: remove redundant seq_buf_has_overflowed()

[Xiu Jianfeng <xiujianfeng@huawei.com>]

Both the end of memory_stat_format() and memcg_stat_format() will call
WARN_ON_ONCE(seq_buf_has_overflowed()). However, memory_stat_format()
is the only caller of memcg_stat_format(), when memcg is on the default
hierarchy, seq_buf_has_overflowed() will be executed twice, so remove
the reduntant one.

Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com>
---
 mm/memcontrol.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 974bd160838c..776d22bc66a2 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -1846,9 +1846,6 @@ static void memcg_stat_format(struct mem_cgroup *memcg, struct seq_buf *s)
 			       vm_event_name(memcg_vm_event_stat[i]),
 			       memcg_events(memcg, memcg_vm_event_stat[i]));
 	}
-
-	/* The above should easily fit into one page */
-	WARN_ON_ONCE(seq_buf_has_overflowed(s));
 }
 
 static void memcg1_stat_format(struct mem_cgroup *memcg, struct seq_buf *s);
-- 
2.34.1