netdev - Re: [PATCH] netconsole: release the spinlock before __netpoll

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Date:	Wed, 06 Mar 2013 22:51:21 +0800
From:	Cong Wang <amwang@...hat.com>
To:	Veaceslav Falico <vfalico@...hat.com>
Cc:	netdev@...r.kernel.org, davem@...emloft.net,
	Neil Horman <nhorman@...driver.com>
Subject: Re: [PATCH] netconsole: release the spinlock before
 __netpoll_cleanup()

On Wed, 2013-03-06 at 15:46 +0100, Veaceslav Falico wrote:
> Commit 3335f0ca130c201f8680e97f63612053fbc16e22 removed spinlock unlocking
> before __netpoll_cleanup() in netconsole_netdev_event(), however we still
> might sleep in __netpoll_cleanup() - via synchronize_srcu(). Revert it and
> add a comment.
> 

synchronize_srcu() was actually introduced by Neil:

commit ca99ca14c95ae49fb4c9cd3abf5f84d11a7e8a61
Author: Neil Horman <nhorman@...driver.com>
Date:   Tue Feb 5 08:05:43 2013 +0000

    netpoll: protect napi_poll and poll_controller during dev_[open|
close]

Cc'ing him.


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