Hello, Serge.
On Thu, Dec 03, 2015 at 04:47:06PM -0600, Serge E. Hallyn wrote:
...
> + dentry = dget(sb->s_root);
> + if (!kn->parent) // this is the root
> + return dentry;
> +
> + knparent = find_kn_ancestor_below(kn, NULL);
> + BUG_ON(!knparent);
Doing WARN_ON() and returning failure is better, I think. Failing ns
mount is an okay failure mode and a lot better than crashing the
system. Also, how about find_next_ancestor() for the name of the
function?
> + do {
> + struct dentry *dtmp;
> + struct kernfs_node *kntmp;
> +
> + if (kn == knparent)
> + return dentry;
> + kntmp = find_kn_ancestor_below(kn, knparent);
> + BUG_ON(!kntmp);
> + dtmp = lookup_one_len(kntmp->name, dentry, strlen(kntmp->name));
> + dput(dentry);
> + if (IS_ERR(dtmp))
> + return dtmp;
> + knparent = kntmp;
> + dentry = dtmp;
> + } while (1);
Other than the nitpicks, looks good to me.
Thanks.
--
tejun
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