linux-next: build failure after merge of the block tree

[Stephen Rothwell]

Hi Nicolas,

After merging the block tree, today's linux-next build (powerpc
ppc64_defconfig) failed like this:

ERROR: ".blk_queue_write_cache" [drivers/block/virtio_blk.ko] undefined!
ERROR: ".blk_queue_write_cache" [drivers/block/ps3disk.ko] undefined!
ERROR: ".blk_queue_write_cache" [drivers/block/nbd.ko] undefined!

Caused by commit

  089095b8eef9 ("kbuild: better abstract vmlinux sequential prerequisites")

from the kbuild-pite tree.

I have reverted that commit for today.

-- 
Cheers,
Stephen Rothwell