Re: [PATCH v2 1/9] mm: Add msharefs filesystem

[Al Viro]

On Wed, Jun 29, 2022 at 04:53:52PM -0600, Khalid Aziz wrote:
> +static int
> +msharefs_d_hash(const struct dentry *dentry, struct qstr *qstr)
> +{
> +	unsigned long hash = init_name_hash(dentry);
> +	const unsigned char *s = qstr->name;
> +	unsigned int len = qstr->len;
> +
> +	while (len--)
> +		hash = partial_name_hash(*s++, hash);
> +	qstr->hash = end_name_hash(hash);
> +	return 0;
> +}

What do you need that for and how is it different from letting it
use full_name_hash() (which is what it will do if you leave
dentry_operations->d_hash equal to NULL)?