Revert "sync ptr before get mmap avail"

This reverts commit cfdae6063e10b01fdea93e754099cd6d6f66f4e8.

Reason for revert: b/174994516, b/175089243

Change-Id: I5496067e0c95cc9c54e6007608be737df912f047
(cherry picked from commit 7fc249c1437a56d0d96ed8e0c65614064c34b898)
1 file changed