SWAP (ZRAM) が増えるだけですよ。

−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−
[8GB なし]
$ free -m
total used free shared buffers
Mem: 11323 3423 7899 61 7
-/+ buffers/cache: 3416 7906
Swap: 6143 427 5716

$ dumpsys meminfo | grep -i swap
ZRAM: 94,332K physical used for 394,240K in swap (6,291,452K total swap)

−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−
[8GB あり]
$ free -m
total used free shared buffers
Mem: 11323 11181 141 143 1
-/+ buffers/cache: 11179 143
Swap: 14335 1240 13095

$ dumpsys meminfo | grep -i swap
ZRAM: 272,684K physical used for 1,166,848K in swap (14,680,056K total swap)