Guangming c1079ff6f9 dma-buf: system_heap: Use 'for_each_sgtable_sg' in pages free flow ... commit 679d94cd7d upstream. For previous version, it uses 'sg_table.nent's to traverse sg_table in pages free flow. However, 'sg_table.nents' is reassigned in 'dma_map_sg', it means the number of created entries in the DMA adderess space. So, use 'sg_table.nents' in pages free flow will case some pages can't be freed. Here we should use sg_table.orig_nents to free pages memory, but use the sgtable helper 'for each_sgtable_sg'(, instead of the previous rather common helper 'for_each_sg' which maybe cause memory leak) is much better. Fixes: d963ab0f15 ("dma-buf: system_heap: Allocate higher order pages if available") Signed-off-by: Guangming <Guangming.Cao@mediatek.com> Reviewed-by: Robin Murphy <robin.murphy@arm.com> Cc: <stable@vger.kernel.org> # 5.11.* Reviewed-by: Christian König <christian.koenig@amd.com> Reviewed-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20211126074904.88388-1-guangming.cao@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-12-08 09:04:42 +01:00
..
Kconfig	dma-buf: heaps: Add CMA heap to dmabuf heaps	2019-12-11 11:13:37 +05:30
Makefile	dma-buf: heaps: Remove heap-helpers code	2020-11-22 22:03:03 +05:30
cma_heap.c	drm-misc-next for 5.13:	2021-03-16 17:08:46 +10:00
system_heap.c	dma-buf: system_heap: Use 'for_each_sgtable_sg' in pages free flow	2021-12-08 09:04:42 +01:00