flounder: make lazy vfree flush thresholds match flush_tlb_range

Bug: 13568411
Change-Id: Ia77265a5c0c8d2d1a914dc9ace4884e4847b9595
diff --git a/init.flounder.rc b/init.flounder.rc
index a74d09b..96e8d5f 100644
--- a/init.flounder.rc
+++ b/init.flounder.rc
@@ -65,6 +65,9 @@
     write /sys/devices/system/cpu/cpu0/cpuidle/state1/disabled 0
     write /sys/devices/system/cpu/cpu1/cpuidle/state1/disabled 0
 
+    # b/13568411: make lazy vfree flush thresholds match flush_tlb_range
+    write /proc/sys/vm/lazy_vfree_tlb_flush_all_threshold 524288
+
     chmod 0444 /sys/kernel/debug/bq2419x-regs
 
     write /proc/sys/net/core/rmem_max 1048576