Re: linux-next: Tree for April 1 [BROKEN ubifs when CONFIG_DEBUG_SECTION_MISMATCH=y]s

From: Sedat Dilek
Date: Fri Apr 01 2011 - 14:22:48 EST


On Fri, Apr 1, 2011 at 7:02 PM, Artem Bityutskiy <dedekind1@xxxxxxxxx> wrote:
> On Fri, 2011-04-01 at 18:10 +0200, Sedat Dilek wrote:
>> On Fri, Apr 1, 2011 at 6:06 PM, Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:
>> > Cc'ing Artem,
>> >
>> > On Fri, 1 Apr 2011 17:55:52 +0200 Sedat Dilek <sedat.dilek@xxxxxxxxxxxxxx> wrote:
>> >>
>> >> With CONFIG_DEBUG_SECTION_MISMATCH=y set, I see in my build.log:
>> >> ...
>> >> MODPOST 2742 modules
>> >> ...
>> >> ERROR: "empty_aops" [fs/ubifs/ubifs.ko] undefined!
>> >> make[5]: *** [__modpost] Error 1
>> >> make[4]: *** [modules] Error 2
>> >> make[3]: *** [sub-make] Error 2
>> >> make[2]: *** [all] Error 2
>> >> make[2]: Leaving directory
>> >> `/home/sd/src/linux-2.6/linux-2.6.39-rc1/debian/build/build_i386_none_686-iniza'
>> >>
>> >> - Sedat -
>> >>
>> >
>> >
>> > --
>> > Cheers,
>> > Stephen Rothwell          Âsfr@xxxxxxxxxxxxxxxx
>> > http://www.canb.auug.org.au/~sfr/
>> >
>>
>> Speculative patch (untested).
>>
>> - Sedat -
>>
>> $ diff -uprN fs/ubifs/xattr.c.orig fs/ubifs/xattr.c
>> --- fs/ubifs/xattr.c.orig    2011-04-01 15:56:08.471082117 +0200
>> +++ fs/ubifs/xattr.c  Â2011-04-01 18:08:27.355276827 +0200
>> @@ -81,6 +81,7 @@ enum {
>>
>> Âstatic const struct inode_operations none_inode_operations;
>> Âstatic const struct file_operations none_file_operations;
>> +static const struct address_space_operations empty_aops;
>>
>> Â/**
>> Â * create_xattr - create an extended attribute.
>
> ubifs doess not have 'empty_aops' symbol and does not use such symbol. I
> do not understand how you got that build issue, but this must be
> something to do with your local setup.
>
> Also:
>
> [dedekind@eru linux-next (master)]$ grep -r 'empty_aops' *
> fs/nilfs2/page.c: Â Â Â static const struct address_space_operations empty_aops;
> fs/nilfs2/page.c: Â Â Â mapping->a_ops = &empty_aops;
> fs/inode.c: Â Â static const struct address_space_operations empty_aops;
> fs/inode.c: Â Â mapping->a_ops = &empty_aops;
>
> in the current linux-next.
>
> --
> Best Regards,
> Artem Bityutskiy (ÐÑÑÑÐ ÐÐÑÑÑÐÐÐ)
>
>

You are right, I pulled linux-2.6-block.git#for-linus into linux-next.
Looks like linux-2.6-block-for-linus/0007-fs-export-empty_aops.patch
is causing this [1].

- Sedat -

[1] http://git.kernel.org/?p=linux/kernel/git/axboe/linux-2.6-block.git;a=commit;h=2c9214b7b72cf440024d8b91523eea25bbc76040
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