block: Introduce blk_exit_queue()

block: Introduce blk_exit_queue()

This patch does not change any functionality.

Signed-off-by: Bart Van Assche <[email protected]>
Reviewed-by: Johannes Thumshirn <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Cc: Ming Lei <[email protected]>
Cc: Omar Sandoval <[email protected]>
Cc: Alexandru Moise <[email protected]>
Cc: Joseph Qi <[email protected]>
Cc: <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>