linux-kernel - network namesapces in 2.6.27

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Date:	Mon, 16 Mar 2009 12:12:21 +0530
From:	Babu N <babu.neelam@...escale.com>
To:	linux-kernel@...r.kernel.org
Subject: network namesapces in 2.6.27

Hi,

I would like to use network namespaces. For this, I am using ubuntu 
8.10 (linux kernel version 2.6.27). network namesapces is disabled by 
default. So I am followed 
http://lxc.sourceforge.net/network/configuration.php to enable 
network namesapces support and re-compiled.

When "fakeroot make-kpkg - -initrd - -append-to-version=-mw1 
kernel_image kernel_headers" command is issued, CC [M] ubuntu/aufs/opts.o
CC [M] ubuntu/aufs/wkq.o
CC [M] ubuntu/aufs/vfsub.o
ubuntu/aufs/vfsub.c: In function 'do_vfsub_mknod':
ubuntu/aufs/vfsub.c:166: warning: passing argument 3 of 'vfs_mknod' 
makes pointer from integer without a cast
ubuntu/aufs/vfsub.c:166: error: too few arguments to function 'vfs_mknod'
ubuntu/aufs/vfsub.c: In function 'do_vfsub_link':
ubuntu/aufs/vfsub.c:191: warning: passing argument 2 of 'vfs_link' 
from incompatible pointer type
ubuntu/aufs/vfsub.c:191: warning: passing argument 3 of 'vfs_link' 
from incompatible pointer type
ubuntu/aufs/vfsub.c:191: error: too few arguments to function 'vfs_link'
ubuntu/aufs/vfsub.c: In function 'do_vfsub_rename':
ubuntu/aufs/vfsub.c:222: warning: passing argument 3 of 'vfs_rename' 
from incompatible pointer type
ubuntu/aufs/vfsub.c:222: warning: passing argument 4 of 'vfs_rename' 
from incompatible pointer type
ubuntu/aufs/vfsub.c:222: error: too few arguments to function 'vfs_rename'
ubuntu/aufs/vfsub.c: In function 'do_vfsub_mkdir':
ubuntu/aufs/vfsub.c:246: warning: passing argument 3 of 'vfs_mkdir' 
makes pointer from integer without a castubuntu/aufs/vfsub.c:246: 
error: too few arguments to function 'vfs_mkdir'
ubuntu/aufs/vfsub.c: In function 'do_vfsub_rmdir':
ubuntu/aufs/vfsub.c:268: error: too few arguments to function 'vfs_rmdir'
ubuntu/aufs/vfsub.c: In function 'do_vfsub_unlink':
ubuntu/aufs/vfsub.c:290: error: too few arguments to function 'vfs_unlink'
make[3]: *** [ubuntu/aufs/vfsub.o] Error 1
make[2]: *** [ubuntu/aufs] Error 2
make[1]: *** [ubuntu] Error 2
make[1]: Leaving directory `/usr/src/linux-source-2.6.27'
make: *** [debian/stamp-build-kernel] Error 2
root@...r-desktop:/usr/src/linux#

I made changes to get through these compilation errors by passing 
dummy arguments to the functions appeared in compilation errors.

After that, I am observing some linking issues:

LD [M] lib/zlib_deflate/zlib_deflate.o
Building modules, stage 2.
MODPOST 2268 modules
ERROR: "dlm_posix_lock" [ubuntu/gfs/gfs.ko] undefined!
ERROR: "dlm_lock" [ubuntu/gfs/gfs.ko] undefined!
ERROR: "dlm_posix_get" [ubuntu/gfs/gfs.ko] undefined!
ERROR: "dlm_posix_unlock" [ubuntu/gfs/gfs.ko] undefined!
ERROR: "dlm_release_lockspace" [ubuntu/gfs/gfs.ko] undefined!
ERROR: "dlm_unlock" [ubuntu/gfs/gfs.ko] undefined!
ERROR: "dlm_new_lockspace" [ubuntu/gfs/gfs.ko] undefined!
WARNING: modpost: Found 12 section mismatch(es).
To see full details build your kernel with:
'make CONFIG_DEBUG_SECTION_MISMATCH=y'
make[2]: *** [__modpost] Error 1
make[1]: *** [modules] Error 2
make[1]: Leaving directory `/usr/src/linux-source-2.6.27'
make: *** [debian/stamp-build-kernel] Error 2
root@...r-desktop:/usr/src/linux#

Could you please let me know how to overcome these errors ?

Thanks,
Babu

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