[Linaro-mm-sig] Re: [PATCH v3 2/2] dma-buf: system_heap: account for system heap allocation in memcg

On Fri, Jan 16, 2026 at 12:06 PM Eric Chanudet echanude@redhat.com wrote:

The system dma-buf heap lets userspace allocate buffers from the page allocator. However, these allocations are not accounted for in memcg, allowing processes to escape limits that may be configured.

Pass __GFP_ACCOUNT for system heap allocations, based on the dma_heap.mem_accounting parameter, to use memcg and account for them.

Signed-off-by: Eric Chanudet echanude@redhat.com

Reviewed-by: T.J. Mercier tjmercier@google.com