On Wed, 06 Jan 2010 14:34:36 PST, akpm@linux-foundation.org said:
> The mm-of-the-moment snapshot 2010-01-06-14-34 has been uploaded to
> 
>    http://userweb.kernel.org/~akpm/mmotm/

Building with CONFIG_SQUASHFS=m, CONFIG_SQUASHFS_LZMA=y ,
and CONFIG_DECOMPRESS_LZMA=n fails:

Kernel: arch/x86/boot/bzImage is ready  (#1)
  Building modules, stage 2.
  MODPOST 219 modules
ERROR: "unlzma" [fs/squashfs/squashfs.ko] undefined!
make[1]: *** [__modpost] Error 1
make: *** [modules] Error 2

Looks like a missing select/depends for DECOMPRESS_LZMA.  Somebody else can
decide which it should be...