From: Asias He <redacted>
Date: Thu, 15 Aug 2013 11:20:16 +0800

memcpy_fromiovec is moved to lib/iovec.c. No need to include
linux/socket.h for it.

Signed-off-by: Asias He <redacted>

You can't do this.

Because this file doesn't include the header file that
provides the declaration, which is linux/uio.h

linux/socket.h includes linux/uio.h, so honestly leaving
things the way they are is a 1000 times better than your
patch.