block: store a block_device pointer in struct bio

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Replace the gendisk pointer in struct bio with a pointer to the newly
improved struct block device.  From that the gendisk can be trivially
accessed with an extra indirection, but it also allows to directly
look up all information related to partition remapping.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Christoph Hellwig 2021-01-24 11:02:34 +01:00 • committed by Jens Axboe

parent cf9a978f97

commit 309dca309f

55 changed files with 154 additions and 184 deletions

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18

include/linux/bio.h

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4

include/linux/blk-mq.h

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3

include/linux/blk_types.h

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5

include/linux/blkdev.h

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