WARNING: vmlinux.o(.text+0x1ba48): Section mismatch in reference from the function native_pagetable_reserve() to the function .init.text:memblock_x86_reserve_range()

writeback-dirty-throttling-v7

$ make
make -C /home/sd/src/linux-2.6/linux-2.6.39-rc3/debian/build/source_i386_none O=/home/sd/src/linux-2.6/linux-2.6.39-rc3/debian/build/build_i386_none_686-small/. 
  Using /home/sd/src/linux-2.6/linux-2.6.39-rc3/debian/build/source_i386_none as source for kernel
  GEN     /home/sd/src/linux-2.6/linux-2.6.39-rc3/debian/build/build_i386_none_686-small/Makefile
  CHK     include/linux/version.h
  CHK     include/generated/utsrelease.h
  CALL    /home/sd/src/linux-2.6/linux-2.6.39-rc3/debian/build/source_i386_none/scripts/checksyscalls.sh
  CHK     include/generated/compile.h
  CC      arch/x86/mm/memblock.o
  LD      arch/x86/mm/built-in.o
  VDSOSYM arch/x86/vdso/vdso32-int80-syms.lds
  VDSOSYM arch/x86/vdso/vdso32-sysenter-syms.lds
  VDSOSYM arch/x86/vdso/vdso32-syms.lds
  LD      arch/x86/vdso/built-in.o
  LD      arch/x86/built-in.o
  LD      vmlinux.o
  MODPOST vmlinux.o
WARNING: vmlinux.o(.text+0x1f2fe): Section mismatch in reference from the function memblock_x86_reserve_range() to the variable .init.data:memblock_debug
The function memblock_x86_reserve_range() references
the variable __initdata memblock_debug.
This is often because memblock_x86_reserve_range lacks a __initdata 
annotation or the annotation of memblock_debug is wrong.

WARNING: vmlinux.o(.text+0x1f330): Section mismatch in reference from the function memblock_x86_reserve_range() to the function .init.text:memblock_reserve()
The function memblock_x86_reserve_range() references
the function __init memblock_reserve().
This is often because memblock_x86_reserve_range lacks a __init 
annotation or the annotation of memblock_reserve is wrong.

  GEN     .version
  CHK     include/generated/compile.h
  UPD     include/generated/compile.h
  CC      init/version.o
  LD      init/built-in.o
  LD      .tmp_vmlinux1
mm/built-in.o: In function `calc_period_shift.part.10':
page-writeback.c:(.text+0x6458): undefined reference to `____ilog2_NaN'
make[2]: *** [.tmp_vmlinux1] Fehler 1
make[1]: *** [sub-make] Fehler 2
make: *** [all] Fehler 2