On 4/11/18 4:47 AM, Ming Lei wrote: > This reverts commit 127276c6ce5a30fcc806b7fe53015f4f89b62956. > > When all CPUs of one hw queue become offline, there still may have IOs > not completed from this hctx. But blk_mq_hw_queue_mapped() is called in > blk_mq_queue_tag_busy_iter(), which is used for iterating request in timeout > handler, timeout event will be missed on the inactive hctx, then request may > never be completed. > > Also the replementation of blk_mq_hw_queue_mapped() doesn't match the helper's > name any more, and it should have been named as blk_mq_hw_queue_active(). > > Even other callers need further verification about this reimplemenation. > > So revert this patch now, and we can improve hw queue activate/inactivate > event > after adequent researching and test.
Thanks, applied. -- Jens Axboe