108 static int ovl_real_fdget_meta(const struct file *file, struct fd *real,  in ovl_real_fdget_meta()  argument
114 	real->flags = 0;  in ovl_real_fdget_meta()
115 	real->file = file->private_data;  in ovl_real_fdget_meta()
123 	if (unlikely(file_inode(real->file) != realinode)) {  in ovl_real_fdget_meta()
124 		real->flags = FDPUT_FPUT;  in ovl_real_fdget_meta()
125 		real->file = ovl_open_realfile(file, realinode);  in ovl_real_fdget_meta()
127 		return PTR_ERR_OR_ZERO(real->file);  in ovl_real_fdget_meta()
131 	if (unlikely((file->f_flags ^ real->file->f_flags) & ~OVL_OPEN_FLAGS))  in ovl_real_fdget_meta()
132 		return ovl_change_flags(real->file, file->f_flags);  in ovl_real_fdget_meta()
137 static int ovl_real_fdget(const struct file *file, struct fd *real)  in ovl_real_fdget()  argument
140 		real->flags = 0;  in ovl_real_fdget()
141 		real->file = ovl_dir_real_file(file, false);  in ovl_real_fdget()
143 		return PTR_ERR_OR_ZERO(real->file);  in ovl_real_fdget()
146 	return ovl_real_fdget_meta(file, real, false);  in ovl_real_fdget()
180 	struct fd real;  in ovl_llseek()  local
185 	 * The two special cases below do not need to involve real fs,  in ovl_llseek()
196 	ret = ovl_real_fdget(file, &real);  in ovl_llseek()
202 	 * through copy up and modified on read/write, but only real  in ovl_llseek()
203 	 * fs knows how to SEEK_HOLE/SEEK_DATA and real fs may impose  in ovl_llseek()
205 	 * files, so we use the real file to perform seeks.  in ovl_llseek()
208 	real.file->f_pos = file->f_pos;  in ovl_llseek()
211 	ret = vfs_llseek(real.file, offset, whence);  in ovl_llseek()
214 	file->f_pos = real.file->f_pos;  in ovl_llseek()
217 	fdput(real);  in ovl_llseek()
293 	struct fd real;  in ovl_read_iter()  local
300 	ret = ovl_real_fdget(file, &real);  in ovl_read_iter()
306 		ret = vfs_iter_read(real.file, iter, &iocb->ki_pos,  in ovl_read_iter()
316 		aio_req->fd = real;  in ovl_read_iter()
317 		real.flags = 0;  in ovl_read_iter()
319 		kiocb_clone(&aio_req->iocb, iocb, real.file);  in ovl_read_iter()
321 		ret = vfs_iocb_iter_read(real.file, &aio_req->iocb, iter);  in ovl_read_iter()
329 	fdput(real);  in ovl_read_iter()
338 	struct fd real;  in ovl_write_iter()  local
353 	ret = ovl_real_fdget(file, &real);  in ovl_write_iter()
362 		file_start_write(real.file);  in ovl_write_iter()
363 		ret = vfs_iter_write(real.file, iter, &iocb->ki_pos,  in ovl_write_iter()
365 		file_end_write(real.file);  in ovl_write_iter()
376 		file_start_write(real.file);  in ovl_write_iter()
378 		__sb_writers_release(file_inode(real.file)->i_sb,  in ovl_write_iter()
380 		aio_req->fd = real;  in ovl_write_iter()
381 		real.flags = 0;  in ovl_write_iter()
383 		kiocb_clone(&aio_req->iocb, iocb, real.file);  in ovl_write_iter()
386 		ret = vfs_iocb_iter_write(real.file, &aio_req->iocb, iter);  in ovl_write_iter()
392 	fdput(real);  in ovl_write_iter()
405 	struct fd real;  in ovl_splice_read()  local
408 	ret = ovl_real_fdget(in, &real);  in ovl_splice_read()
413 	ret = generic_file_splice_read(real.file, ppos, pipe, len, flags);  in ovl_splice_read()
417 	fdput(real);  in ovl_splice_read()
425 	struct fd real;  in ovl_splice_write()  local
429 	ret = ovl_real_fdget(out, &real);  in ovl_splice_write()
434 	ret = iter_file_splice_write(pipe, real.file, ppos, len, flags);  in ovl_splice_write()
438 	fdput(real);  in ovl_splice_write()
444 	struct fd real;  in ovl_fsync()  local
451 	ret = ovl_real_fdget_meta(file, &real, !datasync);  in ovl_fsync()
456 	if (file_inode(real.file) == ovl_inode_upper(file_inode(file))) {  in ovl_fsync()
458 		ret = vfs_fsync_range(real.file, start, end, datasync);  in ovl_fsync()
462 	fdput(real);  in ovl_fsync()
501 	struct fd real;  in ovl_fallocate()  local
505 	ret = ovl_real_fdget(file, &real);  in ovl_fallocate()
510 	ret = vfs_fallocate(real.file, mode, offset, len);  in ovl_fallocate()
516 	fdput(real);  in ovl_fallocate()
523 	struct fd real;  in ovl_fadvise()  local
527 	ret = ovl_real_fdget(file, &real);  in ovl_fadvise()
532 	ret = vfs_fadvise(real.file, offset, len, advice);  in ovl_fadvise()
535 	fdput(real);  in ovl_fadvise()
543 	struct fd real;  in ovl_real_ioctl()  local
547 	ret = ovl_real_fdget(file, &real);  in ovl_real_ioctl()
552 	ret = security_file_ioctl(real.file, cmd, arg);  in ovl_real_ioctl()
554 		ret = vfs_ioctl(real.file, cmd, arg);  in ovl_real_ioctl()
557 	fdput(real);  in ovl_real_ioctl()