[PATCH 0/3] ramzswap: Eliminate stale data from compressed memory (v2)

[Pekka Enberg]

Nitin Gupta wrote:
> Its not debug code. This ioctl is how we send stats about given ramzswap
> device to userspace: rzscontrol /dev/ramzswap --stats, invokes this ioctl
> and prints the stats. I will add comments to this part to make it clear.

Another option would be sysfs if you want the stats to always be available.