From a6aae2f5a5949c49475c7ba603a0567b49cd00b6 Mon Sep 17 00:00:00 2001
From: Jaegeuk Kim <jaegeuk@google.com>
Date: Sat, 17 Feb 2018 06:02:30 -0800
Subject: [PATCH] vold: Idle-maint issues discards fully

Change-Id: Ib20a55e8761aa740b530803f029ecb36256fe9aa
Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>
---
 IdleMaint.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/IdleMaint.cpp b/IdleMaint.cpp
index 62086cd..a2b5faa 100644
--- a/IdleMaint.cpp
+++ b/IdleMaint.cpp
@@ -225,6 +225,9 @@ static bool waitForGc(const std::list<std::string>& paths) {
 static int startGc(const std::list<std::string>& paths) {
     for (const auto& path : paths) {
         LOG(DEBUG) << "Start GC on " << path;
+        if (!WriteStringToFile("1", path + "/discard_granularity")) {
+            PLOG(WARNING) << "Set discard gralunarity failed on" << path;
+        }
         if (!WriteStringToFile("1", path + "/gc_urgent")) {
             PLOG(WARNING) << "Start GC failed on " << path;
         }
@@ -238,6 +241,9 @@ static int stopGc(const std::list<std::string>& paths) {
         if (!WriteStringToFile("0", path + "/gc_urgent")) {
             PLOG(WARNING) << "Stop GC failed on " << path;
         }
+        if (!WriteStringToFile("16", path + "/discard_granularity")) {
+            PLOG(WARNING) << "Set discard gralunarity failed on" << path;
+        }
     }
     return android::OK;
 }