random: provide notifier for VM fork

Drivers such as WireGuard need to learn when VMs fork in order to clear
sessions. This commit provides a simple notifier_block for that, with a
register and unregister function. When no VM fork detection is compiled
in, this turns into a no-op, similar to how the power notifier works.

Cc: Dominik Brodowski <[email protected]>
Cc: Theodore Ts'o <[email protected]>
Reviewed-by: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Jason A. Donenfeld <[email protected]>

0 files changed, 0 insertions, 0 deletions