commit 4cc6baf616bee2c8ce6d8935c16641a66112fa95
author Ravisankar Reddy <ravisankar.reddy@sony.com> Mon Jul 03 11:25:33 2017 +0900
committer SzuWei Lin <szuweilin@google.com> Mon Jul 31 18:12:30 2017 +0800
tree 6fd1af46ed980cfe94f66e42ba0d1b7b9307ac8c
parent 95a92f9203ca68ab446a7cffd23450f04930fe38

Add noatime to vfat and exfat

testNoAtime is new cts testcase, which verifies all writable
block filesystems are mounted "noatime" toavoid unnecessary
flash churn. So add noatime for vfat.

Bug: 64137815
Test: run cts -m m CtsOsTestCases -t android.os.cts.EnvironmentTest#testNoAtime
Change-Id: I4f42b54ed0d66e09964351da26d0d3bf38d573d6

fs/Vfat.cpp

diff --git a/fs/Vfat.cpp b/fs/Vfat.cpp
index 1803c4b..dc1fe33 100644
--- a/fs/Vfat.cpp
+++ b/fs/Vfat.cpp
@@ -133,7 +133,7 @@
     const char* c_source = source.c_str();
     const char* c_target = target.c_str();
 
-    flags = MS_NODEV | MS_NOSUID | MS_DIRSYNC;
+    flags = MS_NODEV | MS_NOSUID | MS_DIRSYNC | MS_NOATIME;
 
     flags |= (executable ? 0 : MS_NOEXEC);
     flags |= (ro ? MS_RDONLY : 0);