netdev - Re: [PATCH net-next 1/2] net: SOCKWQ_ASYNC

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Date:	Mon, 02 May 2016 16:31:40 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	jiri@...nulli.us, edumazet@...gle.com, netdev@...r.kernel.org,
	eladr@...lanox.com, idosch@...lanox.com
Subject: Re: [PATCH net-next 1/2] net: SOCKWQ_ASYNC_NOSPACE optimizations

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Mon, 02 May 2016 13:23:27 -0700

> It looks like net/sunrpc/xprtsock.c should set SOCK_FASYNC
> even if it is not actually using fasync_list
> 
> Could you try this quick hack to check if this is the right way ?

Indeed, it tests the ASYNC bit without enabling FASYNC.

There are three other places that do this: macvtap, tun, dlm lowcomms.