On 9/11/20 4:41 AM, Ming Lei wrote:
Prepare for replacing srcu with percpu-refcount for implementing queue
quiesce.
The following patch needs to avoid duplicated quiesce action for
BLK_MQ_F_BLOCKING, so use test_and_{clear|test}_bit to set/clear
QUEUE_FLAG_QUIESCED.
Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxx>
Cc: Sagi Grimberg <sagi@xxxxxxxxxxx>
Cc: Bart Van Assche <bvanassche@xxxxxxx>
Cc: Johannes Thumshirn <Johannes.Thumshirn@xxxxxxx>
Cc: Chao Leng <lengchao@xxxxxxxxxx>
---
block/blk-core.c | 13 +++++++++++++
block/blk-mq.c | 11 ++++++++---
block/blk.h | 2 ++
3 files changed, 23 insertions(+), 3 deletions(-)
Reviewed-by: Hannes Reinecke <hare@xxxxxxx>
Cheers,
Hannes
--
Dr. Hannes Reinecke Kernel Storage Architect
hare@xxxxxxx +49 911 74053 688
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