Re: [PATCH 1/4] Create generic early_ioremap() support

[Arnd Bergmann <arnd@arndb.de>]

On Wednesday 18 December 2013, Dave Young wrote:
> > 
> > I hadn't really thought about it. Putting these things in mm doesn't
> > sound unreasonable, but lib seems to have become the place for a lot
> > generic code which could also belong in mm, net, etc.
> > 
> 
> IMHO, move subsystem lib code to subsystem core dir looks more reasonable.
> lib should be the place for general kernel stuff.
> 
> I'm not specific for and object this patch, just give my opinion about the lib/..

Traditionally, lib/ is for things that may or may not be used by other optional
code, typically drivers, which I think is a reasonable concept. There has been
some shift over the years from lib-$(CONFIG_FOO) towards obj-$(CONFIG_FOO),
so it's not always used as a actual library code in the linker sense though.

I would agree that moving mm related code such as early_ioremap into mm/ is
a good idea. For things like the compression helpers lib/ is probably
still the best place.

	Arnd