blk-mq: Export queue state through /sys/kernel/debug/block/*/state

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Make it possible to check whether or not a block layer queue has
been stopped. Make it possible to start and to run a blk-mq queue
from user space.

Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Omar Sandoval <osandov@fb.com>
Cc: Hannes Reinecke <hare@suse.com>
Signed-off-by: Jens Axboe <axboe@fb.com>

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Bart Van Assche 2017-04-10 16:13:15 -06:00 • committed by Jens Axboe

parent bcd069bb25

commit 91d68905ae

1 changed files with 106 additions and 0 deletions

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block/blk-mq-debugfs.c

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