[PATCH] mm: export "high_memory" symbol on !MMU

[David Rientjes]

On Wed, 28 Jan 2015, Arnd Bergmann wrote:

> The symbol 'high_memory' is provided on both MMU- and NOMMU-kernels,
> but only one of them is exported, which leads to module build errors
> in drivers that work fine built-in:
> 
> ERROR: "high_memory" [drivers/net/virtio_net.ko] undefined!
> ERROR: "high_memory" [drivers/net/ppp/ppp_mppe.ko] undefined!
> ERROR: "high_memory" [drivers/mtd/nand/nand.ko] undefined!
> ERROR: "high_memory" [crypto/tcrypt.ko] undefined!
> ERROR: "high_memory" [crypto/cts.ko] undefined!
> 
> This exports the symbol to get these to work on NOMMU as well.
> 
> Signed-off-by: Arnd Bergmann <arnd at arndb.de>

Acked-by: David Rientjes <rientjes at google.com>