On Mon, Jan 30, 2023 at 12:08:23AM -0800, Christoph Hellwig wrote: > 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. What do you recommend instead? This solves a real problem for device-mapper users and I am not aware of a better solution. -- Sincerely, Demi Marie Obenour (she/her/hers) Invisible Things Lab
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