diff --git a/overlay/frameworks/base/core/res/res/values/config.xml b/overlay/frameworks/base/core/res/res/values/config.xml
index 01a36c5..cae62cc 100644
--- a/overlay/frameworks/base/core/res/res/values/config.xml
+++ b/overlay/frameworks/base/core/res/res/values/config.xml
@@ -367,4 +367,7 @@
     <string-array name="config_biometric_sensors" translatable="false" >
         <item>0:2:15</item> <!-- ID0:Fingerprint:Strong -->
     </string-array>
+
+    <!-- Enable Zram writeback feature to allow unused pages in zram be written to flash. -->
+    <bool name="config_zramWriteback">true</bool>
 </resources>
diff --git a/rootdir/etc/fstab.zram b/rootdir/etc/fstab.zram
index 9c8948e..1131c0b 100644
--- a/rootdir/etc/fstab.zram
+++ b/rootdir/etc/fstab.zram
@@ -1,4 +1,4 @@
 # Android fstab file.
 
 #<src>                                                  <mnt_point>            <type>  <mnt_flags and options>                              <fs_mgr_flags>
-/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/unencrypted/zram_swap,zram_loopback_size=512M
diff --git a/sm6150.mk b/sm6150.mk
index 1d09c93..37326a9 100644
--- a/sm6150.mk
+++ b/sm6150.mk
@@ -380,3 +380,9 @@ PRODUCT_PACKAGES += \
 
 PRODUCT_BOOT_JARS += \
     WfdCommon
+
+# 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