diff --git a/device.mk b/device.mk
index fa39eeb..9eba711 100644
--- a/device.mk
+++ b/device.mk
@@ -944,6 +944,12 @@
 PRODUCT_COPY_FILES += \
     $(LOCAL_PATH)/powerhint.json:$(TARGET_COPY_OUT_VENDOR)/etc/powerhint.json
 
+# ZRAM writeback
+PRODUCT_PROPERTY_OVERRIDES += \
+    ro.zram.mark_idle_delay_mins=60 \
+    ro.zram.first_wb_delay_mins=180 \
+    ro.zram.periodic_wb_delay_hours=24
+
 # Disable SPU usage
 PRODUCT_PROPERTY_OVERRIDES += \
     vendor.gatekeeper.disable_spu = true
diff --git a/fstab.hardware b/fstab.hardware
index 69f9310..2b6480e 100644
--- a/fstab.hardware
+++ b/fstab.hardware
@@ -9,4 +9,4 @@
 /dev/block/bootdevice/by-name/misc                      /misc                  emmc    defaults                                             defaults
 /dev/block/bootdevice/by-name/userdata                  /data                  f2fs    noatime,nosuid,nodev,discard,reserve_root=32768,resgid=1065,fsync_mode=nobarrier       latemount,wait,check,quota,formattable,fileencryption=ice,reservedsize=128M,sysfs_path=/sys/devices/platform/soc/1d84000.ufshc,keydirectory=/metadata/vold/metadata_encryption,checkpoint=fs
 /devices/platform/soc/a600000.ssusb/a600000.dwc3*       auto                   vfat    defaults                                             voldmanaged=usb:auto
-/dev/block/zram0                                        none                   swap    defaults                                             zramsize=2147483648,max_comp_streams=8
+/dev/block/zram0                                        none                   swap    defaults                                             zramsize=2147483648,max_comp_streams=8,zram_loopback_path=/data/per_boot/zram_swap,zram_loopback_size=512M
diff --git a/overlay/frameworks/base/core/res/res/values/config.xml b/overlay/frameworks/base/core/res/res/values/config.xml
index 4bcfe27..a3a9a4d 100755
--- a/overlay/frameworks/base/core/res/res/values/config.xml
+++ b/overlay/frameworks/base/core/res/res/values/config.xml
@@ -541,6 +541,8 @@
           manually by the user. Off by default, since the expected haptic feedback may not be
           available on some devices. -->
     <bool name="config_enableHapticTextHandle">true</bool>
+    <!-- Enable Zram writeback feature to allow unused pages in zram be written to flash. -->
+    <bool name="config_zramWriteback">true</bool>
 
     <!-- True if the firmware supports connected MAC randomization -->
     <bool name="config_wifi_connected_mac_randomization_supported">true</bool>