Christoph,
> +struct posix_acl *get_acl(struct inode *inode, int type)
> +{
> + struct posix_acl *acl;
> +
> + acl = get_cached_acl(inode, type);
> + if (acl != ACL_NOT_CACHED)
> + return acl;
> +
> + if (!IS_POSIXACL(inode))
> + return NULL;
> +
> + /*
> + * A filesystem can force a ACL callback by just never filling the
> + * ACL cache. But normally you'd fill the cache either at inode
> + * instantiation time, or on the first ->get_acl call.
> + *
> + * If the filesystem doesn't have a get_acl() function at all, we'll
> + * just create the negative cache entry.
> + */
> + if (!inode->i_op->get_acl) {
> + set_cached_acl(inode, type, NULL);
> + return ERR_PTR(-EAGAIN);
The function should return NULL here.
Andreas
