linux-kernel - Re: [ANNOUNCE] 3.10.6-rt3

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Date:	Mon, 19 Aug 2013 10:23:44 -0700
From:	Fernando Lopez-Lezcano <nando@...ma.Stanford.EDU>
To:	Steven Rostedt <rostedt@...dmis.org>
CC:	Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
	Kent Overstreet <kmo@...erainc.com>,
	Fernando Lopez-Lezcano <nando@...ma.Stanford.EDU>,
	linux-rt-users <linux-rt-users@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	John Kacur <jkacur@...hat.com>
Subject: Re: [ANNOUNCE] 3.10.6-rt3

On 08/16/2013 12:01 AM, Sebastian Andrzej Siewior wrote:
> On 08/15/2013 09:22 PM, Steven Rostedt wrote:
>> On Thu, 15 Aug 2013 11:42:55 -0700
>> Fernando Lopez-Lezcano <nando@...ma.Stanford.EDU> wrote:
>>
>>> On 08/12/2013 09:34 AM, Sebastian Andrzej Siewior wrote:
>>>> Dear RT folks!
>>>>
>>>> I'm pleased to announce the v3.10.6-rt3 patch set.
>>>
>>> I'm getting this when trying to build:
>>>
>>> drivers/md/bcache/request.c: In function 'cached_dev_write_complete':
>>> drivers/md/bcache/request.c:1008:2: error: implicit declaration of
>>> function 'up_read_non_owner' [-Werror=implicit-function-declaration]
>>>     up_read_non_owner(&dc->writeback_lock);
>>>     ^
>>> drivers/md/bcache/request.c: In function 'request_write':
>>> drivers/md/bcache/request.c:1034:2: error: implicit declaration of
>>> function 'down_read_non_owner' [-Werror=implicit-function-declaration]
>>>     down_read_non_owner(&dc->writeback_lock);
>>>     ^
>>> cc1: some warnings being treated as errors
>>>
>>
>> Can you send us your config.
>
> The problem is that bcache is using new semaphore functions which it
> just introduced which rt does not know about. The comment above their
> definition says that it is wrong to use them and completion is the
> right way to do it.
> So my question is, why don't we use completion but this nasty hack?

In the meanwhile, any hope of a patch to be able to compile and test 
with my current configuration?
Thanks,
-- Fernando
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