Re: [dm-devel] [PATCH 2.6.20] updated dm-loop patch

["roland" <devzero web de>]

Hi !

Just wanted to let you know that i'm running dm-loop for some days now, 
being very lucky with it and not having any problems !  :)

Good work, Bryn!

regards
Roland

ps:
There`s only one issue being left:
It`s not in mainline ;)



----- Original Message ----- 
From: "Bryn M. Reeves" <breeves redhat com>
To: <devzero web de>
Cc: "device-mapper development" <dm-devel redhat com>
Sent: Thursday, February 15, 2007 1:28 PM
Subject: Re: [dm-devel] [PATCH 2.6.20] updated dm-loop patch


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> devzero web de wrote:
> > Hi Bryn,
> >
> > with this patch and also with 0.415 i have the following problem when 
> > compiling it with stock 2.6.20 :
> >
> >   Building modules, stage 2.
> >   MODPOST 1 modules
> > WARNING: "invalidate_mapping_pages" [drivers/md/dm-loop.ko] undefined!
> > make[1]: *** [__modpost] Error 1
> > make: *** [modules] Error 2
> >
> > i found , that this was due to missing
> >
> > EXPORT_SYMBOL(invalidate_mapping_pages);
> >
> > in mm/truncate.c
> >
> > i found
> > http://lkml.org/lkml/2007/1/3/154
> >
> > it looks that this didn`t go into 2.6.20 and we need at least 
> > 2.6.20-git11 ?
> > changelog at 
> > http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.20-git11.log 
> > telling that it had just had been merged on 10th of february:
>
> Hi Roland,
>
> That's right - I keep my git tree fairly close to upstream, so as soon
> as the patch that deprecated invalidate_inode_pages was merged, I
> converted dm-loop to use invalidate_mapping_pages instead.
>
> This means that dm-loop will build without warnings on the latest
> kernel.org tree but it does mean that you will need the additional patch
> you referenced if you want to apply it to a plain 2.6.20 kernel.
>
> Kind regards,
>
> Bryn.
>
>
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