commit 6abe6831b59a56145cdd28445cd46fa3c79ecb92
author Paul Lawrence <paullawrence@google.com> Wed Jun 22 09:24:51 2016 -0700
committer Paul Lawrence <paullawrence@google.com> Wed Jun 22 09:24:51 2016 -0700
tree 21883a0e2745f4c75b40edfb0dde8b1a80aadf2b
parent 6e410597343716924ed4943d1eabd3dea614d325

Stop dropping caches now we have kernel fix

Only merge once

https://partner-android-review.googlesource.com/#/c/619829/1

has been merged into kernel.

Bug: 28779973
Change-Id: Icef78d1e4381e89e07797c36f6f650033d313557

Ext4Crypt.cpp

diff --git a/Ext4Crypt.cpp b/Ext4Crypt.cpp
index 28140d2..a7d359e 100644
--- a/Ext4Crypt.cpp
+++ b/Ext4Crypt.cpp
@@ -171,13 +171,6 @@
     LOG(DEBUG) << "Added key " << key_id << " (" << ref << ") to keyring " << device_keyring
                << " in process " << getpid();
 
-    // *TODO* Remove this code when kernel is fixed - see b/28373400
-    // Kernel preserves caches across a key insertion with ext4ice, which leads
-    // to contradictory dirents
-    if (!android::base::WriteStringToFile("3", "/proc/sys/vm/drop_caches")) {
-        PLOG(ERROR) << "Failed to drop_caches";
-    }
-
     return true;
 }