Hi Jens,

After merging the block tree, today's linux-next build (x86_64
allmodconfig) failed like this:

drivers/block/xen-blkback/blkback.c: In function 'xen_blkif_init':
drivers/block/xen-blkback/blkback.c:812:6: error: 'blkback' undeclared (first use in this function)

Caused by commit 2a46117c6050 ("xen/blkback: potential null dereference
in error handling").

I have used the block tree from next-20110530 for today.
-- 
Cheers,
Stephen Rothwell                    sfr@canb.auug.org.au
http://www.canb.auug.org.au/~sfr/