user_shm_lock     961 fs/hugetlbfs/inode.c 	if (!user_shm_lock(size, current->user))
user_shm_lock     724 include/linux/mm.h extern int user_shm_lock(size_t, struct user_struct *);
user_shm_lock    1476 mm/shmem.c     		if (!user_shm_lock(inode->i_size, user))