95 static int ovl_real_fdget_meta(const struct file *file, struct fd *real,  in ovl_real_fdget_meta()  argument
101 	real->flags = 0;  in ovl_real_fdget_meta()
102 	real->file = file->private_data;  in ovl_real_fdget_meta()
110 	if (unlikely(file_inode(real->file) != realinode)) {  in ovl_real_fdget_meta()
111 		real->flags = FDPUT_FPUT;  in ovl_real_fdget_meta()
112 		real->file = ovl_open_realfile(file, realinode);  in ovl_real_fdget_meta()
114 		return PTR_ERR_OR_ZERO(real->file);  in ovl_real_fdget_meta()
118 	if (unlikely((file->f_flags ^ real->file->f_flags) & ~OVL_OPEN_FLAGS))  in ovl_real_fdget_meta()
119 		return ovl_change_flags(real->file, file->f_flags);  in ovl_real_fdget_meta()
124 static int ovl_real_fdget(const struct file *file, struct fd *real)  in ovl_real_fdget()  argument
126 	return ovl_real_fdget_meta(file, real, false);  in ovl_real_fdget()
160 	struct fd real;  in ovl_llseek()  local
165 	 * The two special cases below do not need to involve real fs,  in ovl_llseek()
176 	ret = ovl_real_fdget(file, &real);  in ovl_llseek()
182 	 * through copy up and modified on read/write, but only real  in ovl_llseek()
183 	 * fs knows how to SEEK_HOLE/SEEK_DATA and real fs may impose  in ovl_llseek()
185 	 * files, so we use the real file to perform seeks.  in ovl_llseek()
188 	real.file->f_pos = file->f_pos;  in ovl_llseek()
191 	ret = vfs_llseek(real.file, offset, whence);  in ovl_llseek()
194 	file->f_pos = real.file->f_pos;  in ovl_llseek()
197 	fdput(real);  in ovl_llseek()
244 	struct fd real;  in ovl_read_iter()  local
251 	ret = ovl_real_fdget(file, &real);  in ovl_read_iter()
256 	ret = vfs_iter_read(real.file, iter, &iocb->ki_pos,  in ovl_read_iter()
262 	fdput(real);  in ovl_read_iter()
271 	struct fd real;  in ovl_write_iter()  local
285 	ret = ovl_real_fdget(file, &real);  in ovl_write_iter()
290 	file_start_write(real.file);  in ovl_write_iter()
291 	ret = vfs_iter_write(real.file, iter, &iocb->ki_pos,  in ovl_write_iter()
293 	file_end_write(real.file);  in ovl_write_iter()
299 	fdput(real);  in ovl_write_iter()
309 	struct fd real;  in ovl_fsync()  local
313 	ret = ovl_real_fdget_meta(file, &real, !datasync);  in ovl_fsync()
318 	if (file_inode(real.file) == ovl_inode_upper(file_inode(file))) {  in ovl_fsync()
320 		ret = vfs_fsync_range(real.file, start, end, datasync);  in ovl_fsync()
324 	fdput(real);  in ovl_fsync()
363 	struct fd real;  in ovl_fallocate()  local
367 	ret = ovl_real_fdget(file, &real);  in ovl_fallocate()
372 	ret = vfs_fallocate(real.file, mode, offset, len);  in ovl_fallocate()
378 	fdput(real);  in ovl_fallocate()
385 	struct fd real;  in ovl_fadvise()  local
389 	ret = ovl_real_fdget(file, &real);  in ovl_fadvise()
394 	ret = vfs_fadvise(real.file, offset, len, advice);  in ovl_fadvise()
397 	fdput(real);  in ovl_fadvise()
405 	struct fd real;  in ovl_real_ioctl()  local
409 	ret = ovl_real_fdget(file, &real);  in ovl_real_ioctl()
414 	ret = security_file_ioctl(real.file, cmd, arg);  in ovl_real_ioctl()
416 		ret = vfs_ioctl(real.file, cmd, arg);  in ovl_real_ioctl()
419 	fdput(real);  in ovl_real_ioctl()