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authorMing Lei <ming.lei@redhat.com>2021-11-09 15:11:42 +0800
committerJens Axboe <axboe@kernel.dk>2021-11-09 08:14:27 -0700
commitd2b9f12b0f7cf95c43f5fd4a18688d958d39e423 (patch)
treee9d3011d2181c8e700e39ae51bb5bafdf2f0ec63 /include/scsi/scsi_device.h
parent9ef4d0209cbadb63656a7aa29fde49c27ab2b9bf (diff)
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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 <yi.zhang@redhat.com> Fixes: e70feb8b3e68 ("blk-mq: support concurrent queue quiesce/unquiesce") Signed-off-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Link: https://lore.kernel.org/r/20211109071144.181581-3-ming.lei@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/scsi/scsi_device.h')
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