On Tue, Jan 26, 2021 at 08:46:05AM +0100, Michal Hocko wrote:

On Thu 21-01-21 09:55:02, Minchan Kim wrote:

...

From: Hyesoo Yu hyesoo.yu@samsung.com

This patch supports chunk heap that allocates the buffers that arranged into a list a fixed size chunks taken from CMA.

The chunk heap driver is bound directly to a reserved_memory node by following Rob Herring's suggestion in [1].

[1] https://lore.kernel.org/lkml/20191025225009.50305-2-john.stultz@linaro.org/T...

Who is using this allocator in the kernel?

Userspace uses the memory via mapping it via dmabuf.