The first patch fixes the problem that there is no sample in /sys/kernel/debug/block/nvmeXn1/poll_stat and hybrid poll may don't work as expected. The second patch tries to ensure the latency accounting for block stats will work normally even when iostat is disabled. Comments are wecome. Regard, Tao Hou Tao (2): block: make rq sector size accessible for block stats block: also check RQF_STATS in blk_mq_need_time_stamp() block/blk-mq.c | 17 ++++++++--------- block/blk-throttle.c | 3 ++- include/linux/blkdev.h | 15 ++++++++++++--- 3 files changed, 22 insertions(+), 13 deletions(-) -- 2.16.2.dirty
