block: add a poll_fn callback to struct request_queue

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That we we can also poll non blk-mq queues.  Mostly needed for
the NVMe multipath code, but could also be useful elsewhere.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Christoph Hellwig 2017-11-02 21:29:54 +03:00 • committed by Jens Axboe

parent 8ddcd65325

commit ea435e1b93

8 changed files with 25 additions and 16 deletions

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4

include/linux/blkdev.h

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