Didn't Andrew make some rash promise at kernel summit about stopping eating if "-mm" wasn't included in linux-next by the end of November? Must be getting pretty hungry by now. The transparent huge page code just arrived in the merge window without having been in linux-next. I see this error when trying to build for ia64 from Linus' tree this morning: In file included from /home/aegl/generic-smp/arch/ia64/include/asm/pgtable.h:611, from include/linux/mm.h:41, from /home/aegl/generic-smp/arch/ia64/include/asm/uaccess.h:39, from include/linux/poll.h:14, from include/linux/rtc.h:117, from include/linux/efi.h:19, from /home/aegl/generic-smp/arch/ia64/include/asm/sal.h:40, from /home/aegl/generic-smp/arch/ia64/include/asm/mca.h:20, from arch/ia64/kernel/asm-offsets.c:17: include/asm-generic/pgtable.h: In function ‘pmdp_get_and_clear’: include/asm-generic/pgtable.h:96: error: implicit declaration of function ‘__pmd’ include/asm-generic/pgtable.h:96: error: incompatible types in return make[1]: *** [arch/ia64/kernel/asm-offsets.s] Error 1 Looks like arch/*/include/pgtable.h needs to define __pmd() but only x86 was blessed with it. -Tony