Dynamic fsync: don't disable fstatasync() from faux123
staging: android: lowmemorykiller: Don't count reserved free memory
The amount of reserved memory varies between devices. Subtract it
here to reduce the amount of devices specific tuning needed for the
minfree values
Multiple fixes/changes from faux123's repos at https://github.com/faux123/mako/commits/9b62433b6b9581a19b599ecb64f6886c12d5b6f9/drivers/staging/android/lowmemorykiller.c