linux-kernel - Re: [PATCH] sort: Introduce generic list

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Message-ID: <87eim4dbzw.fsf@basil.nowhere.org>
Date:	Tue, 05 Jan 2010 12:31:15 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Dave Chinner <david@...morbit.com>
Cc:	xfs@....sgi.com, Artem Bityutskiy <dedekind@...radead.org>,
	Dave Airlie <airlied@...hat.com>, linux-kernel@...r.kernel.org,
	Adrian Hunter <adrian.hunter@...ia.com>
Subject: Re: [PATCH] sort: Introduce generic list_sort function

Dave Chinner <david@...morbit.com> writes:
> +
> +/**
> + * list_sort - sort a list.
> + * @priv: private data, passed to @cmp
> + * @head: the list to sort
> + * @cmp: the elements comparison function
> + *
> + * This function has been implemented by Mark J Roberts <mjr@...x.org>. It
> + * implements "merge sort" which has O(nlog(n)) complexity. The list is sorted
> + * in ascending order.
> + *
> + * The comparison function @cmp is supposed to return a negative value if @a is
> + * than @b, and a positive value if @a is greater than @b. If @a and @b are
> + * equivalent, then it does not matter what this function returns.
> + */
> +void list_sort(void *priv, struct list_head *head,
> +	       int (*cmp)(void *priv, struct list_head *a,
> +			  struct list_head *b))

No EXPORT_SYMBOL? 

Also it would seem cleaner to have it in a own file.

-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only.
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