On Thu, Nov 25, 2021 at 11:48 PM <guangming....@mediatek.com> wrote:
>
> From: Guangming <guangming....@mediatek.com>
>
> 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: d963ab0f15fb0 ("dma-buf: system_heap: Allocate higher order pages if
> available")
> Signed-off-by: Guangming <guangming....@mediatek.com>
> Reviewed-by: Robin Murphy <robin.mur...@arm.com>
> Cc: <sta...@vger.kernel.org> # 5.11.*
Thanks so much for catching this and sending in all the revisions!
Reviewed-by: John Stultz <john.stu...@linaro.org>
