On Fri, 10 Jun 2011 14:52:17 +0200, Alan Cox [off-list ref]  
wrote:

quoted

I plan to replace it with lib/bitmap.c bitmap_* based allocator  
(similar like
it it is used by dma_declare_coherent_memory() and friends in
drivers/base/dma-coherent.c). We need something really simple for CMA  
area
management.

IMHO allocate_resource and friends a bit too heavy here, but good to  
know
that such allocator also exists.

Not sure I'd class allocate_resource as heavyweight but providing it's
using something that already exists rather than inventing yet another
allocator.

genalloc is already in the kernel and is used in a few places, so we
either let everyone use it as they see fit or we deprecate the library.
If we don't deprecate it I see no reason why CMA should not use it.

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