Hi Mel,

Kernel build failed on

tree:   git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git akpm
head:   6e81859e67505899e9d6c4f5b1cd9fbcf65997bd
commit: 2866c9bbc69e80d22caef0230ebc3d95df501b68 [147/308] nfs: enable swap on NFS
config: blackfin-BF533-EZKIT_defconfig (attached as .config)

All related error/warning messages:

ERROR: "get_kernel_page" [fs/nfs/nfs.ko] undefined!

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0-DAY kernel build testing backend         Open Source Technology Centre
Fengguang Wu <wfg@linux.intel.com>                     Intel Corporation