unlink 函数不解

代码:

WARNING: modpost: Found 3 section mismatch(es).
To see full details build your kernel with:
'make CONFIG_DEBUG_SECTION_MISMATCH=y'
arch/x86/built-in.o: In function `mce_do_trigger':
mce.c:(.text+0x4d35d): undefined reference to `populate_rootfs_wait'
init/built-in.o: In function `kernel_init':
main.c:(.init.text+0x5b6): undefined reference to `populate_rootfs_wait'
kernel/built-in.o: In function `__request_module':
(.text+0x2455c): undefined reference to `populate_rootfs_wait'
kernel/built-in.o: In function `cgroup_release_agent':
cgroup.c:(.text+0x4b3be): undefined reference to `populate_rootfs_wait'
fs/built-in.o: In function `do_coredump':
(.text+0x90d1): undefined reference to `populate_rootfs_wait'
security/built-in.o:(.text+0xf054): more undefined references to `populate_rootfs_wait' follow
make[1]: *** [.tmp_vmlinux1] Error 1
make: *** [debian/stamp/build/kernel] Error 2