Re: [RFC PATCH 1/7] block: Support creating a struct file from a block device

[Christoph Hellwig]

On Wed, Jan 25, 2023 at 10:33:53PM -0500, Demi Marie Obenour wrote:
> The newly added blkdev_get_file() function allows kernel code to create
> a struct file for any block device.  The main use-case is for the
> struct file to be exposed to userspace as a file descriptor.  A future
> patch will modify the DM_DEV_CREATE_CREATE ioctl to allow userspace to
> get a file descriptor to the newly created block device, avoiding nasty
> race conditions.

NAK.  Do not add wierd side-way interfaces to the block layer.