Hello Jens, The five patches in this patch series fix the queue lockup I reported last week on the linux-block mailing list. Please consider these patches for kernel v4.11. Thanks, Bart. Changes compared to v1 of this patch: - Reworked scsi_restart_queues() such that it no longer takes the SCSI host lock. - Added two patches - one for exporting blk_mq_sched_restart_hctx() and another one to make iterating with RCU over blk_mq_tag_set.tag_list safe. Bart Van Assche (5): block: Export blk_mq_sched_restart_hctx() block: Make it safe to use RCU to iterate over blk_mq_tag_set.tag_list blk-mq: Introduce blk_mq_ops.restart_hctx scsi: Add scsi_restart_queues() scsi: Ensure that scsi_run_queue() runs all hardware queues block/blk-mq-sched.c | 22 ++++++++-------------- block/blk-mq-sched.h | 14 -------------- block/blk-mq.c | 6 ++++++ drivers/scsi/scsi_lib.c | 20 +++++++++++++++++--- include/linux/blk-mq.h | 8 ++++++++ include/linux/blkdev.h | 1 - 6 files changed, 39 insertions(+), 32 deletions(-) -- 2.12.0
