real_inode->i_fop->llseek is not called by ovl_llseek

[Eddie Horng <eddiehorng.tw@xxxxxxxxx>]

Hello,
Seems real_inode->i_fop->llseek is not called by ovl_llseek?
It happens the lower fs implements llseek similar with ovl_llseek or lower fs
is overlayfs, the "real inode"  s_maxbytes is not passed to
generic_file_llseek_size. Generally it is not a problem, but is it
better to check if realinode has llseek and invoke it?

static loff_t ovl_llseek(struct file *file, loff_t offset, int whence)
{
struct inode *realinode = ovl_inode_real(file_inode(file));

return generic_file_llseek_size(file, offset, whence,
realinode->i_sb->s_maxbytes,
i_size_read(realinode));
}

thanks,
Eddie