Eric Chanudet 3c227be906 dma-buf: system_heap: account for system heap allocation in memcg ...

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>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
Link: https://patch.msgid.link/20260116-dmabuf-heap-system-memcg-v3-2-ecc6b62cc446@redhat.com

2026-01-19 19:09:52 +05:30

..

cma_heap.c

dma-buf: heaps: Clear CMA pages with clear_page()

2026-01-08 08:52:29 +01:00

Kconfig

dma-buf: heaps: cma: Create CMA heap for each CMA reserved region

2025-10-18 21:31:22 +05:30

Makefile

dma-buf: heaps: Remove heap-helpers code

2020-11-22 22:03:03 +05:30

system_heap.c

dma-buf: system_heap: account for system heap allocation in memcg

2026-01-19 19:09:52 +05:30