On Tue, May 17, 2011 at 6:43 PM, Vikram Narayanan [off-list ref] wrote:

Hi,

I saw two mm_init functions in the kernel source code.
1) init/main.c ? ?(http://lxr.linux.no/#linux+v2.6.38/init/main.c#L530)
2) kernel/fork.c (http://lxr.linux.no/#linux+v2.6.38/kernel/fork.c#L482)

Are the above functions go inside a single binary? How this doesn't
produce a redefinition error?

Thanks,
Vikram

Both of these define mm_init as static so they aren't visible outside
the source file that has them.  Plus they don't use the EXPORT_SYMBOL
macro to indicate that it can be called from elsewhere in the kernel.
There is another mm_init function in drivers/block/umem.c as well
which is also static.

Cheers,
Greg