From a3bf17b5c1efc331e557891ee318d53b6e35b23e Mon Sep 17 00:00:00 2001
From: Pranav Vashi <neobuddy89@gmail.com>
Date: Thu, 23 Jun 2022 02:22:09 +0530
Subject: [PATCH] sm6150-common: Disable zram writeback

* Disabled on many devices with reports to lagginess in long term and random reboot in some instances.

Change-Id: I73985159766da08cd35b0288db29cfafc7db62b0
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
Signed-off-by: donjohanliebert <donjohanliebert@gmail.com>
---
 overlay/frameworks/base/core/res/res/values/config.xml | 3 ---
 rootdir/etc/fstab.zram                                 | 2 +-
 sm6150.mk                                              | 6 ------
 3 files changed, 1 insertion(+), 10 deletions(-)

diff --git a/overlay/frameworks/base/core/res/res/values/config.xml b/overlay/frameworks/base/core/res/res/values/config.xml
index 1dfc5f7..088a2b6 100644
--- a/overlay/frameworks/base/core/res/res/values/config.xml
+++ b/overlay/frameworks/base/core/res/res/values/config.xml
@@ -284,7 +284,4 @@
         <item>0</item> <!-- COLOR_MODE_DEFAULT    -->
         <item>0</item> <!-- COLOR_MODE_DEFAULT    -->
     </integer-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 fa7067a..5e39820 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,zram_backingdev_size=512M
+/dev/block/zram0                                        none                   swap    defaults                                             zramsize=2147483648
diff --git a/sm6150.mk b/sm6150.mk
index a607805..e9098e7 100644
--- a/sm6150.mk
+++ b/sm6150.mk
@@ -376,9 +376,3 @@ PRODUCT_COPY_FILES += \
 PRODUCT_PACKAGES += \
     firmware_wlan_mac.bin_symlink \
     firmware_WCNSS_qcom_cfg.ini_symlink
-
-# ZRAM writeback
-PRODUCT_PROPERTY_OVERRIDES += \
-    ro.zram.mark_idle_delay_mins=60 \
-    ro.zram.first_wb_delay_mins=1440 \
-    ro.zram.periodic_wb_delay_hours=24