Set a more reasonable ramLimit about fscrypt HOT 1 CLOSED

Cryptsetup V2 uses a memory cost of 128MiB, which would be OK for any reasonable Linux system (Debian has a minimum memory of 128MiB on amd64).

Cryptsetup release note wasn't updated for last minute change before actual release.
https://gitlab.com/cryptsetup/cryptsetup/commit/3c2f92a7afc2ae4c99fa937f1b189bc1375374ad see http://www.saout.de/pipermail/dm-crypt/2017-December/005773.html

Default for Argon2i is now 1GB of memory and 2 seconds iteration time (can be changed during
compilation time or later on commandline). The memory is trimmed to 1/2 of detected
physical memory (with minimum 128MB). (Otherwise OOM killer hits cryptsetup.)

and another quote from same post:

If you read Argon2 RFC draft,
https://datatracker.ietf.org/doc/draft-irtf-cfrg-argon2/ you can see this recommendation:

"Key derivation for hard-drive encryption, that takes 3 seconds on
a 2 GHz CPU using 2 cores - Argon2id with 4 lanes and 6 GiB of RAM."

Personally I think that 128MB is more sane default than 1GB or 6GB (lol), just wanted to clarify this.

from fscrypt.