[PATCH 0/2] mtd: switch to keying by dev_t

[Christian Brauner]

> I plan on taking this upstream as a fix during the merge window.

Btw, I tested this all with jffs2:

sudo flash_erase -j /dev/mtd0 0 0
sudo mount -t jffs2 mtd0 /mnt

and then some variants with racing umounts and mounts.