Subject: linux-next link failure

From: Mark Salter <[email-masked]>
Date: Mon, 23 Jul 2012 14:16:49 -0400

Today's linux-next has a link failure on no-mmu systems:

  fs/built-in.o: In function `nfs_file_direct_read':
  (.text+0x80968): undefined reference to `get_kernel_page'
  fs/built-in.o: In function `nfs_file_direct_write':
  (.text+0x81178): undefined reference to `get_kernel_page'

The problem is that get_kernel_page does not exist if CONFIG_MMU is not
defined. This is the patch that added get_kernel_page():

  mm: add get_kernel_page[s] for pinning of kernel addresses for I/O

and the reference to get_kernelpage was added with:

  nfs: enable swap on NFS

--Mark