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| author | Ming Lei <[email protected]> | 2021-11-09 07:11:42 +0000 |
|---|---|---|
| committer | Jens Axboe <[email protected]> | 2021-11-09 15:14:27 +0000 |
| commit | d2b9f12b0f7cf95c43f5fd4a18688d958d39e423 (patch) | |
| tree | e9d3011d2181c8e700e39ae51bb5bafdf2f0ec63 /drivers/fpga/fpga-bridge.c | |
| parent | blk-mq: add one API for waiting until quiesce is done (diff) | |
| download | kernel-d2b9f12b0f7cf95c43f5fd4a18688d958d39e423.tar.gz kernel-d2b9f12b0f7cf95c43f5fd4a18688d958d39e423.zip | |
scsi: avoid to quiesce sdev->request_queue two times
For fixing queue quiesce race between driver and block layer(elevator
switch, update nr_requests, ...), we need to support concurrent quiesce
and unquiesce, which requires the two to be balanced.
blk_mq_quiesce_queue() calls blk_mq_quiesce_queue_nowait() for updating
quiesce depth and marking the flag, then scsi_internal_device_block() calls
blk_mq_quiesce_queue_nowait() two times actually.
Fix the double quiesce and keep quiesce and unquiesce balanced.
Reported-by: Yi Zhang <[email protected]>
Fixes: e70feb8b3e68 ("blk-mq: support concurrent queue quiesce/unquiesce")
Signed-off-by: Ming Lei <[email protected]>
Reviewed-by: Martin K. Petersen <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jens Axboe <[email protected]>
Diffstat (limited to 'drivers/fpga/fpga-bridge.c')
0 files changed, 0 insertions, 0 deletions