NFSV4ACE_SYNCHRONIZE
if (mask & NFSV4ACE_SYNCHRONIZE) {
mask &= ~NFSV4ACE_SYNCHRONIZE;
acemask |= NFSV4ACE_SYNCHRONIZE;
acemask |= NFSV4ACE_SYNCHRONIZE;
NFSV4ACE_EXECUTEMASK | NFSV4ACE_SYNCHRONIZE)