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From: David Howells <dhowells@redhat.com>
In-Reply-To: <20150331031441.10464.24655.stgit@pluto.fritz.box>
References: <20150331031441.10464.24655.stgit@pluto.fritz.box> <20150331030340.10464.30272.stgit@pluto.fritz.box>
To: Ian Kent <raven@themaw.net>
Cc: dhowells@redhat.com, Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Oleg Nesterov <onestero@redhat.com>,
        Trond Myklebust <trond.myklebust@primarydata.com>,
        "J. Bruce Fields" <bfields@fieldses.org>,
        Benjamin Coddington <bcodding@redhat.com>,
        Al Viro <viro@ZenIV.linux.org.uk>,
        Jeff Layton <jeff.layton@primarydata.com>,
        "Eric W. Biederman" <ebiederm@xmission.com>
Subject: Re: [RFC PATCH 5 1/7] kmod - add workqueue service thread store
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Date: Thu, 02 Apr 2015 13:43:31 +0100
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Ian Kent <raven@themaw.net> wrote:

> +static struct umh_wq_entry *umh_wq_find_entry(int token)
> +{
> +	struct umh_wq_entry *this, *entry;
> +	struct hlist_head *bucket;
> +	unsigned int hash;
> +
> +	hash = hash_32((unsigned long) token, UMH_WQ_HASH_SHIFT);
> +	bucket = &umh_wq_hash[hash];
> +
> +	entry = ERR_PTR(-ENOENT);
> +	if (hlist_empty(bucket))
> +		goto out;
> +
> +	hlist_for_each_entry(this, bucket, umh_wq_hlist) {
> +		if (this->token == token) {
> +			entry = this;
> +			break;
> +		}
> +	}
> +out:
> +	return entry;
> +}

Can "struct umh_wq_entry *" be used as the token?

David