linux-kernel - Re: [PATCH -v4 2/2] lib, Add lock-less NULL terminated single list

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Message-ID: <1289908241.2109.570.camel@laptop>
Date:	Tue, 16 Nov 2010 12:50:41 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Huang Ying <ying.huang@...el.com>
Cc:	Len Brown <lenb@...nel.org>, linux-kernel@...r.kernel.org,
	Andi Kleen <andi@...stfloor.org>, linux-acpi@...r.kernel.org,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...e.hu>,
	Mauro Carvalho Chehab <mchehab@...hat.com>
Subject: Re: [PATCH -v4 2/2] lib, Add lock-less NULL terminated single list

On Tue, 2010-11-16 at 08:53 +0800, Huang Ying wrote:
> +/**
> + * llist_del_all - delete all entries from lock-less list
> + * @head:      the head of lock-less list to delete all entries
> + *
> + * If list is empty, return NULL, otherwise, delete all entries and
> + * return the pointer to the first entry.
> + */
> +struct llist_node *llist_del_all(struct llist_head *head)
> +{
> +       return xchg(&head->first, NULL);
> +}
> +EXPORT_SYMBOL_GPL(llist_del_all); 

Its not del_all, since it returns the actual list. move or splice might
be better names.
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