Hi,
The 1st patch add comments on blk-mq races with timeout handler.
The other 3 patches improves handling for dying queue:
- the 2nd one adds one barrier in blk_queue_enter() for
avoiding hanging caused by out-of-order
- the 3rd and 4th patches block new I/O entering queue
after queue is set as dying
V1:
- add comments on races related with timeout handler
- add Tested-by & Reviewed-by tag
thanks,
Ming
Ming Lei (4):
blk-mq: comment on races related with timeout handler
block: add a read barrier in blk_queue_enter()
block: rename blk_mq_freeze_queue_start()
block: block new I/O just after queue is set as dying
block/blk-core.c | 12 ++++++++++++
block/blk-mq.c | 32 +++++++++++++++++++++++++++-----
drivers/block/mtip32xx/mtip32xx.c | 2 +-
drivers/nvme/host/core.c | 2 +-
include/linux/blk-mq.h | 2 +-
5 files changed, 42 insertions(+), 8 deletions(-)
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2.9.3
