82 static int ovl_real_fdget_meta(const struct file *file, struct fd *real,  in ovl_real_fdget_meta()  argument
88 	real->flags = 0;  in ovl_real_fdget_meta()
89 	real->file = file->private_data;  in ovl_real_fdget_meta()
97 	if (unlikely(file_inode(real->file) != realinode)) {  in ovl_real_fdget_meta()
98 		real->flags = FDPUT_FPUT;  in ovl_real_fdget_meta()
99 		real->file = ovl_open_realfile(file, realinode);  in ovl_real_fdget_meta()
101 		return PTR_ERR_OR_ZERO(real->file);  in ovl_real_fdget_meta()
105 	if (unlikely((file->f_flags ^ real->file->f_flags) & ~O_NOATIME))  in ovl_real_fdget_meta()
106 		return ovl_change_flags(real->file, file->f_flags);  in ovl_real_fdget_meta()
111 static int ovl_real_fdget(const struct file *file, struct fd *real)  in ovl_real_fdget()  argument
113 	return ovl_real_fdget_meta(file, real, false);  in ovl_real_fdget()
147 	struct fd real;  in ovl_llseek()  local
152 	 * The two special cases below do not need to involve real fs,  in ovl_llseek()
163 	ret = ovl_real_fdget(file, &real);  in ovl_llseek()
169 	 * through copy up and modified on read/write, but only real  in ovl_llseek()
170 	 * fs knows how to SEEK_HOLE/SEEK_DATA and real fs may impose  in ovl_llseek()
172 	 * files, so we use the real file to perform seeks.  in ovl_llseek()
175 	real.file->f_pos = file->f_pos;  in ovl_llseek()
178 	ret = vfs_llseek(real.file, offset, whence);  in ovl_llseek()
181 	file->f_pos = real.file->f_pos;  in ovl_llseek()
184 	fdput(real);  in ovl_llseek()
231 	struct fd real;  in ovl_read_iter()  local
238 	ret = ovl_real_fdget(file, &real);  in ovl_read_iter()
243 	ret = vfs_iter_read(real.file, iter, &iocb->ki_pos,  in ovl_read_iter()
249 	fdput(real);  in ovl_read_iter()
258 	struct fd real;  in ovl_write_iter()  local
272 	ret = ovl_real_fdget(file, &real);  in ovl_write_iter()
277 	file_start_write(real.file);  in ovl_write_iter()
278 	ret = vfs_iter_write(real.file, iter, &iocb->ki_pos,  in ovl_write_iter()
280 	file_end_write(real.file);  in ovl_write_iter()
286 	fdput(real);  in ovl_write_iter()
296 	struct fd real;  in ovl_fsync()  local
300 	ret = ovl_real_fdget_meta(file, &real, !datasync);  in ovl_fsync()
305 	if (file_inode(real.file) == ovl_inode_upper(file_inode(file))) {  in ovl_fsync()
307 		ret = vfs_fsync_range(real.file, start, end, datasync);  in ovl_fsync()
311 	fdput(real);  in ovl_fsync()
350 	struct fd real;  in ovl_fallocate()  local
354 	ret = ovl_real_fdget(file, &real);  in ovl_fallocate()
359 	ret = vfs_fallocate(real.file, mode, offset, len);  in ovl_fallocate()
365 	fdput(real);  in ovl_fallocate()
372 	struct fd real;  in ovl_fadvise()  local
376 	ret = ovl_real_fdget(file, &real);  in ovl_fadvise()
381 	ret = vfs_fadvise(real.file, offset, len, advice);  in ovl_fadvise()
384 	fdput(real);  in ovl_fadvise()
392 	struct fd real;  in ovl_real_ioctl()  local
396 	ret = ovl_real_fdget(file, &real);  in ovl_real_ioctl()
401 	ret = vfs_ioctl(real.file, cmd, arg);  in ovl_real_ioctl()
404 	fdput(real);  in ovl_real_ioctl()