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

[roland]

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 at redhat.com>
To: <devzero at web.de>
Cc: "device-mapper development" <dm-devel at 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 at 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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