Hi, This patch set did some improvements for blk throttle, please help to review. Thanks. Baolin Wang (4): blk-throttle: Remove a meaningless parameter for throtl_downgrade_state() blk-throttle: Avoid getting the current time if tg->last_finish_time is 0 blk-throttle: Avoid tracking latency if low limit is invalid blk-throttle: Fix IO hang for a corner case block/blk-throttle.c | 26 ++++++++++++++++---------- 1 file changed, 16 insertions(+), 10 deletions(-) -- 1.8.3.1