block: provide a direct_make_request helper

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This helper allows reinserting a bio into a new queue without much
overhead, but requires all queue limits to be the same for the upper
and lower queues, and it does not provide any recursion preventions.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Javier González <javier@cnexlabs.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Christoph Hellwig 2017-11-02 21:29:50 +03:00 • committed by Jens Axboe

parent 96222bcc73

commit f421e1d9ad

2 changed files with 35 additions and 0 deletions

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34

block/blk-core.c

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1

include/linux/blkdev.h

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