Here are the patches for linux-4.4.y. Untested. Regards, Giuliano. Giuliano Procida (4): block: more locking around delayed work blk-mq: Allow timeouts to run while queue is freezing blk-mq: sync things with blk_mq_queue_tag_busy_iter blk-mq: Allow blocking queue tag iter callbacks block/blk-mq-tag.c | 7 ++++++- block/blk-mq.c | 17 +++++++++++++++++ block/blk-timeout.c | 3 +++ 3 files changed, 26 insertions(+), 1 deletion(-) -- 2.26.0.292.g33ef6b2f38-goog