У меня 2.6.8 выглядит так:
CC init/main.o
In file included from include/linux/proc_fs.h:6,
from init/main.c:17:
include/linux/fs.h: In function `file_accessed':
include/linux/fs.h:990: error: `O_NOATIME' undeclared (first use in this function)
include/linux/fs.h:990: error: (Each undeclared identifier is reported only once
include/linux/fs.h:990: error: for each function it appears in.)
make[1]: *** [init/main.o] Ошибка 1
make: *** [init] Ошибка 2