linux-kernel - Re: [patch 4/4 -mm] flex_array: add flex_array

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Message-Id: <20090821164935.173689a0.akpm@linux-foundation.org>
Date:	Fri, 21 Aug 2009 16:49:35 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	David Rientjes <rientjes@...gle.com>
Cc:	dave@...ux.vnet.ibm.com, linux-kernel@...r.kernel.org,
	Randy Dunlap <randy.dunlap@...cle.com>
Subject: Re: [patch 4/4 -mm] flex_array: add flex_array_shrink function

On Fri, 21 Aug 2009 16:21:49 -0700 (PDT)
David Rientjes <rientjes@...gle.com> wrote:

> +/**
> + * flex_array_shrink - free unused second-level pages
> + *
> + * Frees all second-level pages that consist solely of unused
> + * elements.  Returns the number of pages freed.
> + *
> + * Locking must be provided by the caller.
> + */
> +int flex_array_shrink(struct flex_array *fa)

It's logical but afaik unconventional that none of the flex_array
kerneldoc actually documents the `struct flex_array *fa' argument.


We're all waiting with bated breath to see who will be the first to use
flex_array in live code.

Sometime we'll need to move flex_array.o from lib-y to obj-y and fill
it up with EXPORT_SYMBOL()s.  2.6.32 I expect.

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