LO_UPGRADABLE
iflags = LO_SLEEPABLE | LO_UPGRADABLE;
flags = LO_UPGRADABLE;
flags = LO_SLEEPABLE | LO_UPGRADABLE;
if ((lock->lo_flags & LO_UPGRADABLE) == 0)
if ((lock->lo_flags & LO_UPGRADABLE) == 0)
if ((lock->lo_flags & LO_UPGRADABLE) != 0 &&