netdev - Re: all this business about ->sk

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Message-ID: <20080617113509.GA8982@2ka.mipt.ru>
Date:	Tue, 17 Jun 2008 15:35:11 +0400
From:	Evgeniy Polyakov <johnpol@....mipt.ru>
To:	David Miller <davem@...emloft.net>
Cc:	netdev@...r.kernel.org
Subject: Re: all this business about ->sk_sleep

Hi.

On Tue, Jun 17, 2008 at 02:54:46AM -0700, David Miller (davem@...emloft.net) wrote:
> net/unix/af_unix.c:	newsk->sk_sleep		= &newu->peer_wait;
> 
> The only thing that uses something other than &sk->sk_socket->wait
> for sk->sk_sleep is AF_UNIX.  So that's a useful discovery and
> we may be able to get rid of sk->sk_sleep somehow.  I'll try to
> launch a full investiation into how and why AF_UNIX uses a special
> wait queue.

Its 'pipe way', which allows to wake reader when performing write
on writer and vice versa.

-- 
	Evgeniy Polyakov
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