From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alan Cox <alan@linux.intel.com>
Subject: Re: [PATCH-v3] tty: prevent unnecessary work queue lock checking on
 flip buffer copy
Date: Tue, 23 Oct 2012 11:16:59 +0100
Message-ID: <20121023111659.6f4427c7@bob.linux.org.uk>
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	<20121022234746.GA12743@kroah.com>
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Cc: Ivo Sieben <meltedpianoman@gmail.com>,
	linux-serial@vger.kernel.org, RT <linux-rt-users@vger.kernel.org>
To: Greg KH <gregkh@linuxfoundation.org>
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> Note, I took out the WARN_ON() in this patch, as what is that really
> going to help here?  It also will conflict with a patch from Jiri I'll
> ba applying after this one, so if you think it's needed, care to send
> a follow-on patch based on linux-next in a few days?

It catches anyone flipping low_latency wrongly or in other places. It's
fairly important as WARN_ON() goes !