shmlock_user_lock  843 mm/mlock.c     static DEFINE_SPINLOCK(shmlock_user_lock);
shmlock_user_lock  855 mm/mlock.c     	spin_lock(&shmlock_user_lock);
shmlock_user_lock  863 mm/mlock.c     	spin_unlock(&shmlock_user_lock);
shmlock_user_lock  869 mm/mlock.c     	spin_lock(&shmlock_user_lock);
shmlock_user_lock  871 mm/mlock.c     	spin_unlock(&shmlock_user_lock);