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Omar Sandoval authored
CONFIG_DEBUG_TEST_DRIVER_REMOVE found a possible leak of q->rq_wb when a request queue is reregistered. This has been a problem since wbt was introduced, but the WARN_ON(!list_empty(&stats->callbacks)) in the blk-stat rework exposed it. Fix it by cleaning up wbt when we unregister the queue. Fixes: 87760e5e ("block: hook up writeback throttling") Signed-off-by:
Omar Sandoval <osandov@fb.com> Signed-off-by:
Jens Axboe <axboe@fb.com>
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