[dm-devel] [PATCH 44/45] block: merge struct block_device and struct hd_struct

[Hannes Reinecke]

On 11/28/20 5:15 PM, Christoph Hellwig wrote:
> Instead of having two structures that represent each block device with
> different life time rules, merge them into a single one.  This also
> greatly simplifies the reference counting rules, as we can use the inode
> reference count as the main reference count for the new struct
> block_device, with the device model reference front ending it for device
> model interaction.
> 
> Signed-off-by: Christoph Hellwig <hch at lst.de>
> ---
>   block/blk-cgroup.c        |   9 ++-
>   block/blk.h               |   2 +-
>   block/genhd.c             |  89 +++++++++--------------------
>   block/partitions/core.c   | 116 +++++++++++++++-----------------------
>   fs/block_dev.c            |   9 ---
>   include/linux/blk_types.h |   8 ++-
>   include/linux/blkdev.h    |   1 -
>   include/linux/genhd.h     |  40 +++----------
>   init/do_mounts.c          |  21 ++++---
>   kernel/trace/blktrace.c   |  43 +++-----------
>   10 files changed, 108 insertions(+), 230 deletions(-)
> 
Reviewed-by: Hannes Reinecke <hare at suse.de>

Cheers,

Hannes
-- 
Dr. Hannes Reinecke                Kernel Storage Architect
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