Increase size of ucounts to atomic_long_t

mainline inclusion
from mainline-v5.14-rc1
commit f9c82a4e
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I4MYYH


CVE: N/A

-----------------------------------------

RLIMIT_MSGQUEUE and RLIMIT_MEMLOCK use unsigned long to store their
counters. As a preparation for moving rlimits based on ucounts, we need
to increase the size of the variable to long.

Signed-off-by: Alexey Gladkov <legion@kernel.org>
Link: https://lkml.kernel.org/r/257aa5fb1a7d81cf0f4c34f39ada2320c4284771.1619094428.git.legion@kernel.org


Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: GONG, Ruiqi <gongruiqi1@huawei.com>
Reviewed-by: Xiu Jianfeng <xiujianfeng@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>