From 030be3a5f803aecedc888a901ed5f2c51a4cc8ba Mon Sep 17 00:00:00 2001
From: Sayali Lokhande <sayalil@codeaurora.org>
Date: Tue, 31 Mar 2020 23:37:20 +0530
Subject: [PATCH] davinci: rootdir: init.qcom.rc: limit discard size to 128MB

This change limits discard size for UFS(sda)
to 128MB in order to avoid long IO latency.

Change-Id: Iccf6f7561abaac13bc8c35b03f696cdf56c184ee
---
 rootdir/etc/init.qcom.rc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/rootdir/etc/init.qcom.rc b/rootdir/etc/init.qcom.rc
index 160cfa8..9c6dcd0 100644
--- a/rootdir/etc/init.qcom.rc
+++ b/rootdir/etc/init.qcom.rc
@@ -117,6 +117,9 @@ on boot
     # Create hvdcp_opti directory
     mkdir /mnt/vendor/persist/hvdcp_opti 0770 root system
 
+    # limit discard size to 128MB in order to avoid long IO latency
+    write /sys/block/sda/queue/discard_max_bytes 134217728
+
     # Enable qcrild and data services
     enable vendor.qcrild
     enable vendor.qcrild2