/dev/block/by-name/system /system ext4 ro,seclabel,nosuid,nodev,noatime,nomblk_io_submit,data=ordered 0 0
mount -o rw,remount -t ext4 /dev/block/by-name/system /system
/dev/block/by-name/system /system ext4 ro,seclabel,nosuid,nodev,noatime,nomblk_io_submit,data=ordered 0 0
mount -o rw,remount -t ext4 /dev/block/by-name/system /system