120 static unsigned int *memfd_file_seals_ptr(struct file *file)  in memfd_file_seals_ptr()  argument
122 	if (shmem_file(file))  in memfd_file_seals_ptr()
123 		return &SHMEM_I(file_inode(file))->seals;  in memfd_file_seals_ptr()
126 	if (is_file_hugepages(file))  in memfd_file_seals_ptr()
127 		return &HUGETLBFS_I(file_inode(file))->seals;  in memfd_file_seals_ptr()
139 static int memfd_add_seals(struct file *file, unsigned int seals)  in memfd_add_seals()  argument
141 	struct inode *inode = file_inode(file);  in memfd_add_seals()
176 	if (!(file->f_mode & FMODE_WRITE))  in memfd_add_seals()
183 	file_seals = memfd_file_seals_ptr(file);  in memfd_add_seals()
195 		error = mapping_deny_writable(file->f_mapping);  in memfd_add_seals()
199 		error = memfd_wait_for_pins(file->f_mapping);  in memfd_add_seals()
201 			mapping_allow_writable(file->f_mapping);  in memfd_add_seals()
214 static int memfd_get_seals(struct file *file)  in memfd_get_seals()  argument
216 	unsigned int *seals = memfd_file_seals_ptr(file);  in memfd_get_seals()
221 long memfd_fcntl(struct file *file, unsigned int cmd, unsigned long arg)  in memfd_fcntl()  argument
231 		error = memfd_add_seals(file, arg);  in memfd_fcntl()
234 		error = memfd_get_seals(file);  in memfd_fcntl()
255 	struct file *file;  in SYSCALL_DEFINE2()  local
302 		file = hugetlb_file_setup(name, 0, VM_NORESERVE, &user,  in SYSCALL_DEFINE2()
307 		file = shmem_file_setup(name, 0, VM_NORESERVE);  in SYSCALL_DEFINE2()
308 	if (IS_ERR(file)) {  in SYSCALL_DEFINE2()
309 		error = PTR_ERR(file);  in SYSCALL_DEFINE2()
312 	file->f_mode |= FMODE_LSEEK | FMODE_PREAD | FMODE_PWRITE;  in SYSCALL_DEFINE2()
313 	file->f_flags |= O_LARGEFILE;  in SYSCALL_DEFINE2()
316 		file_seals = memfd_file_seals_ptr(file);  in SYSCALL_DEFINE2()
320 	fd_install(fd, file);  in SYSCALL_DEFINE2()