Revert "locking/rwsem: Prevent potential lock starvation"
hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I7F5L7 CVE: NA -------------------------------- 2f06f702 ("locking/rwsem: Prevent potential lock starvation"): This patch may have some impact on reader performance as it reduces reader optimistic spinning especially if the lock critical sections are short the number of contending readers are small. This patch will lead to 30%+ performance degradation to fio write_iops_blocksize 4KB testcase, and we stress the system with mysql tpcc for 12 hours, no hungtask occur, So revert this patchset temporarily. This reverts commit f66f7f34. Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>
Showing
想要评论请 注册 或 登录