From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [RFC PATCH net-next 00/11] net: remove disable_irq() from
 ->ndo_poll_controller
Date: Thu, 11 Dec 2014 21:14:02 -0500 (EST)
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From: Sabrina Dubroca <sd@queasysnail.net>
Date: Thu, 11 Dec 2014 22:45:37 +0100

> Introduce disable_irq_nosleep() that returns true if it successfully
> synchronized against all handlers (there was no threaded handler
> running), false if it left some threads running.  And in
> ->ndo_poll_controller, only call the interrupt handler if
> synchronization was successful.
> 
> Both users of the poll controllers retry their action (alloc/xmit an
> skb) several times, with calls to the device's poll controller between
> attempts.  And hopefully, if the first attempt fails, we will still
> manage to get through?

This looks more palatable to me.