On Thu, May 18, 2023 at 10:13:04AM +0200, Christian Brauner wrote: > Fwiw, I didn't mean to have a special device handler for an O_PATH fd. > I really just tried to figure out whether it would make sense to have an > fd-based block device lookup function because right now we only have > blkdev_get_by_path() and we'd be passing blkdev fds through the mount > api. But I understand now how I'd likely do it. So now just finding time > to actually implement it. What's wrong with blkdev_get_by_dev(file_inode(file)->i_rdev) after the sanity checks from lookup_bdev (S_ISBLK and may_open_dev)?
