Remove zram size limit and disable zswap when using zram
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Two fixes that I tested and deployed to build.archlinux.org:
zram-generator: Uncap max size of the zram device
Set "max-zram-size = none" to disable this unwanted limitation which
defaulted to creating zram-based swap with a maximum size of 4096MiB.
Fixes: dc8fa2bdfc86 ("common: Replace deprecated systemd-swap[1] with zram-generator")zram-generator: use systemd-zram-setup@zram0 handler
Restarting swap.target doesn't apply configuration changes; instead we
can restart systemd-zram-setup@zram0 which seems to do what we wanted.Bonus commit so that zramctl will display useful statistics:
zram: Disable zswap to prevent conflict with zram
When both zswap and zram are active, zswap sits in front of zram and
treats it as a backing store. We just want to use zram and not zswap
disguising itself as such; disable the latter so we can enjoy useful
zramctl statistics.
Implemented as tmpfiles.d/zram.conf which disables zswap at runtime.