Hi Jens,

After merging the block tree, today's linux-next build (x86
64_allmodconfig) failed like this:

usr/include/linux/fs.h:13: included file 'linux/percpu-rwsem.h' is not exported

Caused by commit 62ac665ff9fc ("blockdev: turn a rw semaphore into a
percpu rw semaphore").

I have used the block tree from next-20120926 for today.  This will also
affect the device-mapper tree which is based on the block tree (of which I
will also use the next-20120926 version).

-- 
Cheers,
Stephen Rothwell                    sfr@canb.auug.org.au