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Date:	Fri, 1 Oct 2010 08:41:48 +1000
From:	Julian Calaby <julian.calaby@...il.com>
To:	Johannes Berg <johannes@...solutions.net>
Cc:	netdev@...r.kernel.org, linux-wireless@...r.kernel.org,
	tgraf@...g.ch
Subject: Re: [RFC 1/2] genetlink: introduce pre_doit/post_doit hooks

On Fri, Oct 1, 2010 at 07:10, Johannes Berg <johannes@...solutions.net> wrote:
> From: Johannes Berg <johannes.berg@...el.com>
>
> Each family may have some amount of boilerplate
> locking code that applies to most, or even all,
> commands.
>
> This allows a family to handle such things in
> a more generic way, by allowing it to
>  a) include private flags in each operation
>  b) specify a pre_doit hook that is called,
>    before an operation's doit() callback and
>    may return an error directly,
>  c) specify a post_doit hook that can undo
>    locking or similar things done by pre_doit,
>    and finally
>  d) include two private pointers in each info
>    struct passed between all these operations
>    including doit(). (It's two because I'll
>    need two in nl80211 -- can be extended.)

Stupid question:

Why not have a priv struct rather than an arbitrary array of two pointers?

Thanks,

-- 

Julian Calaby

Email: julian.calaby@...il.com
Profile: http://www.google.com/profiles/julian.calaby/
.Plan: http://sites.google.com/site/juliancalaby/
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