92 static int ovl_real_fdget_meta(const struct file *file, struct fd *real,  in ovl_real_fdget_meta()  argument
100 	real->word = (unsigned long)realfile;  in ovl_real_fdget_meta()
120 		real->word = (unsigned long)f | FDPUT_FPUT;  in ovl_real_fdget_meta()
131 static int ovl_real_fdget(const struct file *file, struct fd *real)  in ovl_real_fdget()  argument
137 		real->word = (unsigned long)f;  in ovl_real_fdget()
141 	return ovl_real_fdget_meta(file, real, false);  in ovl_real_fdget()
186 	struct fd real;  in ovl_llseek()  local
191 	 * The two special cases below do not need to involve real fs,  in ovl_llseek()
202 	ret = ovl_real_fdget(file, &real);  in ovl_llseek()
208 	 * through copy up and modified on read/write, but only real  in ovl_llseek()
209 	 * fs knows how to SEEK_HOLE/SEEK_DATA and real fs may impose  in ovl_llseek()
211 	 * files, so we use the real file to perform seeks.  in ovl_llseek()
214 	fd_file(real)->f_pos = file->f_pos;  in ovl_llseek()
217 	ret = vfs_llseek(fd_file(real), offset, whence);  in ovl_llseek()
220 	file->f_pos = fd_file(real)->f_pos;  in ovl_llseek()
223 	fdput(real);  in ovl_llseek()
270 	struct fd real;  in ovl_read_iter()  local
281 	ret = ovl_real_fdget(file, &real);  in ovl_read_iter()
285 	ret = backing_file_read_iter(fd_file(real), iter, iocb, iocb->ki_flags,  in ovl_read_iter()
287 	fdput(real);  in ovl_read_iter()
296 	struct fd real;  in ovl_write_iter()  local
312 	ret = ovl_real_fdget(file, &real);  in ovl_write_iter()
324 	ret = backing_file_write_iter(fd_file(real), iter, iocb, ifl, &ctx);  in ovl_write_iter()
325 	fdput(real);  in ovl_write_iter()
337 	struct fd real;  in ovl_splice_read()  local
345 	ret = ovl_real_fdget(in, &real);  in ovl_splice_read()
349 	ret = backing_file_splice_read(fd_file(real), ppos, pipe, len, flags, &ctx);  in ovl_splice_read()
350 	fdput(real);  in ovl_splice_read()
358  * and file_start_write(fd_file(real)) in ovl_write_iter().
361  * the real file.
366 	struct fd real;  in ovl_splice_write()  local
379 	ret = ovl_real_fdget(out, &real);  in ovl_splice_write()
383 	ret = backing_file_splice_write(pipe, fd_file(real), ppos, len, flags, &ctx);  in ovl_splice_write()
384 	fdput(real);  in ovl_splice_write()
394 	struct fd real;  in ovl_fsync()  local
402 	ret = ovl_real_fdget_meta(file, &real, !datasync);  in ovl_fsync()
407 	if (file_inode(fd_file(real)) == ovl_inode_upper(file_inode(file))) {  in ovl_fsync()
409 		ret = vfs_fsync_range(fd_file(real), start, end, datasync);  in ovl_fsync()
413 	fdput(real);  in ovl_fsync()
433 	struct fd real;  in ovl_fallocate()  local
444 	ret = ovl_real_fdget(file, &real);  in ovl_fallocate()
449 	ret = vfs_fallocate(fd_file(real), mode, offset, len);  in ovl_fallocate()
455 	fdput(real);  in ovl_fallocate()
465 	struct fd real;  in ovl_fadvise()  local
469 	ret = ovl_real_fdget(file, &real);  in ovl_fadvise()
474 	ret = vfs_fadvise(fd_file(real), offset, len, advice);  in ovl_fadvise()
477 	fdput(real);  in ovl_fadvise()
585 	struct fd real;  in ovl_flush()  local
589 	err = ovl_real_fdget(file, &real);  in ovl_flush()
593 	if (fd_file(real)->f_op->flush) {  in ovl_flush()
595 		err = fd_file(real)->f_op->flush(fd_file(real), id);  in ovl_flush()
598 	fdput(real);  in ovl_flush()