Revert "locking/rwsem: Pass the current atomic count to rwsem_down_read_slowpath()"

hulk inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I7F5L7


CVE: NA

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

Revert this patch due to fio performance degradation.
This reverts commit fa59b0b0.

Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>