libdex: Invert the default for dexopt-on-cache

The growth of /system apps and total /data space are making this
device-breaking (insufficient space to dexopt everything to
/cache), pointless (/data has more than enough room to hold
the cache), and in some cases, both.
The default behavior is now the same as mainline Android's: dexopt
everything to /data. Set dalvik.vm.dexopt-data-only=0 to change
that and dexopt /system apps to /cache. If you do that, make sure
your /cache can accomodate double the size of the dex classes in
system, since in some extreme cases that has been observed during
dex2oat

Change-Id: Ia99655731c882e54bdc85293c467288fb4dc65df

1 files changed, 1 insertions, 1 deletions

diff --git a/libdex/OptInvocation.cpp b/libdex/OptInvocation.cpp
index ad69a9efa..32f8a3fd6 100644
--- a/libdex/OptInvocation.cpp
+++ b/libdex/OptInvocation.cpp
@@ -127,7 +127,7 @@ char* dexOptGenerateCacheFileName(const char* fileName, const char* subFileName)
 #ifdef ALLOW_DEXROOT_ON_CACHE
     /* Cache anything stored on /system in cacheRoot, everything else in dataRoot */
     if (!strncmp(absoluteFile, systemRoot, strlen(systemRoot))) {
-        property_get("dalvik.vm.dexopt-data-only", dexoptDataOnly, "");
+        property_get("dalvik.vm.dexopt-data-only", dexoptDataOnly, "1");
         if (strcmp(dexoptDataOnly, "1") != 0) {
             dexRoot = cacheRoot;
         }