[0/4] nvme: fix two kinds of IO hang from removing NSs

Message

Ming Lei June 15, 2023, 2:32 p.m. UTC

Hello,

The 1st three patch fixes io hang when controller removal interrupts error
recovery, then queue is left as frozen.

The 4th patch fixes io hang when controller is left as unquiesce.

Ming Lei (4):
  blk-mq: add API of blk_mq_unfreeze_queue_force
  nvme: add nvme_unfreeze_force()
  nvme: unfreeze queues before removing namespaces
  nvme: unquiesce io queues when removing namespaces

 block/blk-mq.c           | 25 ++++++++++++++++++++++---
 block/blk.h              |  3 ++-
 block/genhd.c            |  2 +-
 drivers/nvme/host/core.c | 34 ++++++++++++++++++++++++++++------
 drivers/nvme/host/nvme.h |  1 +
 include/linux/blk-mq.h   |  1 +
 6 files changed, 55 insertions(+), 11 deletions(-)