Re: [PATCH 3/9] block: store a block_device pointer in struct bio

store a pointer to the block_device in struct bio (again) · Christoph Hellwig <hch@lst.de> · 2020-12-01
[PATCH 1/9] brd: remove the end of device check in brd_do_bvec · Christoph Hellwig <hch@lst.de> · 2020-12-01
Re: [PATCH 1/9] brd: remove the end of device check in brd_do_bvec · Tejun Heo <tj@kernel.org> · 2020-12-02
[PATCH 4/9] block: simplify submit_bio_checks a bit · Christoph Hellwig <hch@lst.de> · 2020-12-01
Re: [PATCH 4/9] block: simplify submit_bio_checks a bit · Tejun Heo <tj@kernel.org> · 2020-12-02
[PATCH 2/9] dcssblk: remove the end of device check in brd_do_bvec · Christoph Hellwig <hch@lst.de> · 2020-12-01
Re: [PATCH 2/9] dcssblk: remove the end of device check in brd_do_bvec · Tejun Heo <tj@kernel.org> · 2020-12-02
[PATCH 5/9] block: use ->bi_bdev for bio based I/O accounting · Christoph Hellwig <hch@lst.de> · 2020-12-01
Re: [PATCH 5/9] block: use ->bi_bdev for bio based I/O accounting · Tejun Heo <tj@kernel.org> · 2020-12-02
[PATCH 3/9] block: store a block_device pointer in struct bio · Christoph Hellwig <hch@lst.de> · 2020-12-01
Re: [PATCH 3/9] block: store a block_device pointer in struct bio · Tejun Heo <tj@kernel.org> · 2020-12-02
Re: [PATCH 3/9] block: store a block_device pointer in struct bio · Ming Lei <hidden> · 2020-12-03
Re: [PATCH 3/9] block: store a block_device pointer in struct bio · Ming Lei <hidden> · 2020-12-03
Re: [PATCH 3/9] block: store a block_device pointer in struct bio · Christoph Hellwig <hch@lst.de> · 2020-12-03
Re: [PATCH 3/9] block: store a block_device pointer in struct bio · Ming Lei <hidden> · 2020-12-03
Re: [PATCH 3/9] block: store a block_device pointer in struct bio · Keith Busch <kbusch@kernel.org> · 2020-12-03
[PATCH 6/9] blk-mq: use ->bi_bdev for I/O accounting · Christoph Hellwig <hch@lst.de> · 2020-12-01
Re: [PATCH 6/9] blk-mq: use ->bi_bdev for I/O accounting · Tejun Heo <tj@kernel.org> · 2020-12-02
[PATCH 7/9] block: add a disk_uevent helper · Christoph Hellwig <hch@lst.de> · 2020-12-01
Re: [PATCH 7/9] block: add a disk_uevent helper · Tejun Heo <tj@kernel.org> · 2020-12-02
[PATCH 8/9] block: remove DISK_PITER_REVERSE · Christoph Hellwig <hch@lst.de> · 2020-12-01
Re: [PATCH 8/9] block: remove DISK_PITER_REVERSE · Tejun Heo <tj@kernel.org> · 2020-12-02
[PATCH 9/9] block: use an xarray for disk->part_tbl · Christoph Hellwig <hch@lst.de> · 2020-12-01
Re: [PATCH 9/9] block: use an xarray for disk->part_tbl · Tejun Heo <tj@kernel.org> · 2020-12-02
Re: store a pointer to the block_device in struct bio (again) · Tejun Heo <tj@kernel.org> · 2020-12-02
Re: store a pointer to the block_device in struct bio (again) · Tejun Heo <tj@kernel.org> · 2020-12-02
Re: store a pointer to the block_device in struct bio (again) · Jens Axboe <axboe@kernel.dk> · 2020-12-04
Re: store a pointer to the block_device in struct bio (again) · Qian Cai <hidden> · 2020-12-07
Re: store a pointer to the block_device in struct bio (again) · Christoph Hellwig <hch@lst.de> · 2020-12-07
Re: store a pointer to the block_device in struct bio (again) · Jens Axboe <axboe@kernel.dk> · 2020-12-07
Re: store a pointer to the block_device in struct bio (again) · Christoph Hellwig <hch@lst.de> · 2020-12-08
Re: store a pointer to the block_device in struct bio (again) · Qian Cai <hidden> · 2020-12-08
Re: store a pointer to the block_device in struct bio (again) · Daniel Wagner <hidden> · 2020-12-08
Re: store a pointer to the block_device in struct bio (again) · Jens Axboe <axboe@kernel.dk> · 2020-12-08

From: Tejun Heo <tj@kernel.org>
Date: 2020-12-02 22:55:47
Also in: dm-devel, linux-bcache, linux-block, linux-s390

On Tue, Dec 01, 2020 at 05:54:18PM +0100, Christoph Hellwig wrote:

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>

Thanks.

-- 
tejun

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