From mboxrd@z Thu Jan  1 00:00:00 1970
From: groglein@gmail.com (Greg)
Date: Tue, 17 May 2011 19:19:55 -0700
Subject: mm_init() functions in kernel code
In-Reply-To: <BANLkTimWRZKp+AwJF4-wWK2-9HAsj-3Exg@mail.gmail.com>
References: <BANLkTimWRZKp+AwJF4-wWK2-9HAsj-3Exg@mail.gmail.com>
Message-ID: <BANLkTikc0ZP6nA4WzSETD1D4iddfU8LKEg@mail.gmail.com>
To: kernelnewbies@lists.kernelnewbies.org
List-Id: kernelnewbies.lists.kernelnewbies.org

On Tue, May 17, 2011 at 6:43 PM, Vikram Narayanan <vikram186@gmail.com> 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