Commit e946b0e0 authored by Lu Jialin's avatar Lu Jialin Committed by Zheng Zengkai
Browse files

memcg: Fix the problem of cat memory.high_async_ratio 

hulk inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I4IMAK


CVE: NA

--------

The patch fixes the problem of cat memory.high_async_ratio.
After this patch, when user cat memory.high_async_ratio, the correct
memory.high_async_ratio will be shown.

Show case:
/sys/fs/cgroup/test # cat memory.high_async_ratio
0
/sys/fs/cgroup/test # echo 90 > memory.high_async_ratio
/sys/fs/cgroup/test # cat memory.high_async_ratio
90
/sys/fs/cgroup/test # echo 85 > memory.high_async_ratio
/sys/fs/cgroup/test # cat memory.high_async_ratio
85

Signed-off-by: default avatarLu Jialin <lujialin4@huawei.com>
Reviewed-by: default avatarKefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: default avatarZheng Zengkai <zhengzengkai@huawei.com>
parent d014172f

mm/memcontrol.c

+3 −2
Original line number Diff line number Diff line
@@ -5291,8 +5291,9 @@ static ssize_t memory_reclaim(struct kernfs_open_file *of, char *buf, 


static int memcg_high_async_ratio_show(struct seq_file *m, void *v)

{

	return seq_puts_memcg_tunable(m,

	seq_printf(m, "%d\n",

		   READ_ONCE(mem_cgroup_from_seq(m)->high_async_ratio));

	return 0;

}



static ssize_t memcg_high_async_ratio_write(struct kernfs_open_file *of,