######### ZRAM SWAP ##########

# set to "on" to activate.
ZRAM_SWAP="on"

# If you have several swap devices (or partitions), you may prefer to have
# a higher priority for zram_swap.
ZRAM_SWAP_PRIORITY=30

# Maybe you could use some extra args while loading zram module.
ZRAM_EXTRA_ARGS=""

######## NOTHING TO CHANGE BELOW THIS ##########
if [ $ZRAM_SWAP = "on" ]; then
	modprobe zram $ZRAM_EXTRA_ARGS

	if grep -wq /dev/zram0 /proc/swaps; then
		# Normally, this shouldn't be executed if you don't play with rc.local.
		gprintf "Unloading and reseting zram swap device\n"
		swapoff /dev/zram0
		echo 1 > /sys/block/zram0/reset
	fi
	
	gprintf "Sizing zram swap device\n"

	FREE_MEM=`free -t -m | egrep Mem | awk {'print $2'}`
	# Swap size = 25% of free memory;
	ZRAM_SWAP_SIZE=$(($FREE_MEM/4))
	
	echo $(($ZRAM_SWAP_SIZE * 1024 * 1024)) > /sys/block/zram0/disksize

	gprintf "Activating zram swap device\n"
	mkswap /dev/zram0
	swapon -p $ZRAM_SWAP_PRIORITY /dev/zram0
	success;echo
fi
######### /ZRAM SWAP ##########