[PATCH V2 0/5] nvme: pci: fix & improve timeout handling

Ming Lei
2018-04-29T15:41:47Z

Hi,

The 1st patch introduces blk_quiesce_timeout() and blk_unquiesce_timeout()
for NVMe, meantime fixes blk_sync_queue().

The 2nd patch covers timeout for admin commands for recovering controller
for avoiding possible deadlock.

The other 3 patches fixes several races wrt. NVMe timeout handler, and
finally can make blktests block/011 passed.

Ming Lei (5):
block: introduce blk_quiesce_timeout() and blk_unquiesce_timeout()
nvme: pci: cover timeout for admin commands running in EH
nvme: pci: only wait freezing if queue is frozen
nvme: fix race between freeze queues and unfreeze queues
nvme: pci: simplify timeout handling

V2:
- fix draining timeout work, so no need to change return value from
.timeout()
- fix race between nvme_start_freeze() and nvme_unfreeze()
- cover timeout for admin commands running in EH

block/blk-core.c | 34 +++++++-
block/blk-mq.c | 9 ++
block/blk-timeout.c | 5 +-
drivers/nvme/host/core.c | 47 ++++++++--
drivers/nvme/host/nvme.h | 6 ++
drivers/nvme/host/pci.c | 222 ++++++++++++++++++++++++++++++++++++++++++-----
include/linux/blkdev.h | 4 +
7 files changed, 296 insertions(+), 31 deletions(-)

Cc: Jianchao Wang <jianchao.w.wang@oracle.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Sagi Grimberg <sagi@grimberg.me>
Cc: linux-nvme@lists.infradead.org

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