linux-kernel - Re: [patch 11/27] dm exception store: refactor zero

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Date:	Fri, 24 Oct 2008 21:40:04 -0400 (EDT)
From:	Mikulas Patocka <mpatocka@...hat.com>
To:	Greg KH <greg@...ah.com>
cc:	Alasdair G Kergon <agk@...hat.com>, linux-kernel@...r.kernel.org,
	stable@...nel.org
Subject: Re: [patch 11/27] dm exception store: refactor zero_area



On Thu, 23 Oct 2008, Greg KH wrote:

> On Thu, Oct 23, 2008 at 09:34:23PM -0700, Greg KH wrote:
> > 2.6.27-stable review patch.  If anyone has any objections, please let us 
> > know.
> > 
> > ------------------
> > From: Alasdair G Kergon <agk@...hat.com>
> > 
> > commit 7c9e6c17325fab380fbe9c9787680ff7d4a51abd upstream
> > 
> > Use a separate buffer for writing zeroes to the on-disk snapshot
> > exception store, make the updating of ps->current_area explicit and
> > refactor the code in preparation for the fix in the next patch.
> > 
> > No functional change.
> > 
> > Signed-off-by: Alasdair G Kergon <agk@...hat.com>
> > Signed-off-by: Mikulas Patocka <mpatocka@...hat.com>
> > Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
> > 
> > ---
> >  drivers/md/dm-exception-store.c |  103 ++++++++++++++++++++++++++--------------
> >  1 file changed, 69 insertions(+), 34 deletions(-)
> 
> Oops, this patch causes a build error:
> 
> drivers/md/dm-exception-store.c:235: error: implicit declaration of function 'area_location'
> drivers/md/dm-exception-store.c:241: error: 'area' undeclared (first use in this function)
> drivers/md/dm-exception-store.c:241: error: (Each undeclared identifier is reported only once
> drivers/md/dm-exception-store.c:241: error: for each function it appears in.)
> 
> I'll drop this one, and the follow-on dm-exception-store.c patch as
> well, as that was the only reason this patch was added.
> 
> If you want to redo these two patches, and get them into the
> 2.6.27-stable tree, please do so and send them to stable@...nel.org.
> 
> thanks,
> 
> greg k-h

You should apply this one patch before:
ftp://ftp.kernel.org/pub/linux/kernel/people/agk/patches/2.6/editing/dm-exception-store-introduce-area_location-function.patch

Mikulas
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