blk-mq: don't handle non-flush requests in blk_insert_flush
Return to the normal blk_mq_submit_bio flow if the bio did not end up actually being a flush because the device didn't support it. Note that this is basically impossible to hit without special instrumentation given that submit_bio_checks already clears these flags usually, so we'd need a tight race to actually hit this code path. With this the call to blk_mq_run_hw_queue for the flush requests can be removed given that the actual flush requests are always issued via the requeue workqueue which runs the queue unconditionally. Signed-off-by:Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20211019122553.2467817-1-hch@lst.de Signed-off-by:
Jens Axboe <axboe@kernel.dk>
parent
dc5fc361
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