blk-mq: Introduce blk_mq_queue_stopped()

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The function blk_queue_stopped() allows to test whether or not a
traditional request queue has been stopped. Introduce a helper
function that allows block drivers to query easily whether or not
one or more hardware contexts of a blk-mq queue have been stopped.

Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>

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Bart Van Assche 2016-10-28 17:19:37 -07:00 • committed by Jens Axboe

parent 5d1b25c1ec

commit fd00144301

2 changed files with 21 additions and 0 deletions

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block/blk-mq.c

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include/linux/blk-mq.h

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