95 static int ovl_real_fdget_meta(const struct file *file, struct fd *real,  in ovl_real_fdget_meta()  argument
102 	real->flags = 0;  in ovl_real_fdget_meta()
103 	real->file = file->private_data;  in ovl_real_fdget_meta()
119 	if (unlikely(file_inode(real->file) != d_inode(realpath.dentry))) {  in ovl_real_fdget_meta()
120 		real->flags = FDPUT_FPUT;  in ovl_real_fdget_meta()
121 		real->file = ovl_open_realfile(file, &realpath);  in ovl_real_fdget_meta()
123 		return PTR_ERR_OR_ZERO(real->file);  in ovl_real_fdget_meta()
127 	if (unlikely((file->f_flags ^ real->file->f_flags) & ~OVL_OPEN_FLAGS))  in ovl_real_fdget_meta()
128 		return ovl_change_flags(real->file, file->f_flags);  in ovl_real_fdget_meta()
133 static int ovl_real_fdget(const struct file *file, struct fd *real)  in ovl_real_fdget()  argument
136 		real->flags = 0;  in ovl_real_fdget()
137 		real->file = ovl_dir_real_file(file, false);  in ovl_real_fdget()
139 		return PTR_ERR_OR_ZERO(real->file);  in ovl_real_fdget()
142 	return ovl_real_fdget_meta(file, real, false);  in ovl_real_fdget()
187 	struct fd real;  in ovl_llseek()  local
192 	 * The two special cases below do not need to involve real fs,  in ovl_llseek()
203 	ret = ovl_real_fdget(file, &real);  in ovl_llseek()
209 	 * through copy up and modified on read/write, but only real  in ovl_llseek()
210 	 * fs knows how to SEEK_HOLE/SEEK_DATA and real fs may impose  in ovl_llseek()
212 	 * files, so we use the real file to perform seeks.  in ovl_llseek()
215 	real.file->f_pos = file->f_pos;  in ovl_llseek()
218 	ret = vfs_llseek(real.file, offset, whence);  in ovl_llseek()
221 	file->f_pos = real.file->f_pos;  in ovl_llseek()
224 	fdput(real);  in ovl_llseek()
266 	struct fd real;  in ovl_read_iter()  local
277 	ret = ovl_real_fdget(file, &real);  in ovl_read_iter()
281 	ret = backing_file_read_iter(real.file, iter, iocb, iocb->ki_flags,  in ovl_read_iter()
283 	fdput(real);  in ovl_read_iter()
292 	struct fd real;  in ovl_write_iter()  local
308 	ret = ovl_real_fdget(file, &real);  in ovl_write_iter()
320 	ret = backing_file_write_iter(real.file, iter, iocb, ifl, &ctx);  in ovl_write_iter()
321 	fdput(real);  in ovl_write_iter()
333 	struct fd real;  in ovl_splice_read()  local
341 	ret = ovl_real_fdget(in, &real);  in ovl_splice_read()
345 	ret = backing_file_splice_read(real.file, ppos, pipe, len, flags, &ctx);  in ovl_splice_read()
346 	fdput(real);  in ovl_splice_read()
354  * and file_start_write(real.file) in ovl_write_iter().
357  * the real file.
362 	struct fd real;  in ovl_splice_write()  local
375 	ret = ovl_real_fdget(out, &real);  in ovl_splice_write()
379 	ret = backing_file_splice_write(pipe, real.file, ppos, len, flags, &ctx);  in ovl_splice_write()
380 	fdput(real);  in ovl_splice_write()
390 	struct fd real;  in ovl_fsync()  local
398 	ret = ovl_real_fdget_meta(file, &real, !datasync);  in ovl_fsync()
403 	if (file_inode(real.file) == ovl_inode_upper(file_inode(file))) {  in ovl_fsync()
405 		ret = vfs_fsync_range(real.file, start, end, datasync);  in ovl_fsync()
409 	fdput(real);  in ovl_fsync()
429 	struct fd real;  in ovl_fallocate()  local
440 	ret = ovl_real_fdget(file, &real);  in ovl_fallocate()
445 	ret = vfs_fallocate(real.file, mode, offset, len);  in ovl_fallocate()
451 	fdput(real);  in ovl_fallocate()
461 	struct fd real;  in ovl_fadvise()  local
465 	ret = ovl_real_fdget(file, &real);  in ovl_fadvise()
470 	ret = vfs_fadvise(real.file, offset, len, advice);  in ovl_fadvise()
473 	fdput(real);  in ovl_fadvise()
581 	struct fd real;  in ovl_flush()  local
585 	err = ovl_real_fdget(file, &real);  in ovl_flush()
589 	if (real.file->f_op->flush) {  in ovl_flush()
591 		err = real.file->f_op->flush(real.file, id);  in ovl_flush()
594 	fdput(real);  in ovl_flush()