My Linode has no swap?

By default, when you deploy a Linode, it is configured to use /dev/sdb as the swap disk. It does this by creating a line in /etc/fstab to mount the swap disk on boot:

 /dev/sdb         none            swap    sw 0    0

Your configuration profile shows that your swap is on /dev/sdc, but your fstab likely still trying to mount it via /dev/sdb

I'd suggest taking a look at your /etc/fstab and Configuration Profile at the same time and making them match: it doesn't matter where the swap volume ends up, but the configuration profile and fstab should agree.

Once its setup correctly, reboot, and run swapon --show to confirm that everything is working properly.

Yes that was right,
I had fstab point at the same partition as home /dev/sdb
Now:
$ free -mt
Gives

               total        used        free      shared  buff/cache   available
Mem:           1978         361        1271          39         345        1402
Swap:          2047           0        2047
Total:         4026         361        3319