Hello, Hillf danton.
On Wed, Nov 18, 2020 at 05:00:13PM +0800, Hillf Danton wrote:
> On Tue, 17 Nov 2020 10:19:34 -0800 Minchan Kim wrote:
> +
> +static int chunk_heap_mmap(struct dma_buf *dmabuf, struct vm_area_struct *vma)
> +{
> + struct chunk_heap_buffer *buffer = dmabuf->priv;
> + struct sg_table *table = &buffer->sg_table;
> + unsigned long addr = vma->vm_start;
> + struct sg_page_iter piter;
> + int ret;
> +
> + for_each_sgtable_page(table, &piter, vma->vm_pgoff) {
> + struct page *page = sg_page_iter_page(&piter);
> +
> + ret = remap_pfn_range(vma, addr, page_to_pfn(page), PAGE_SIZE,
> + vma->vm_page_prot);
> + if (ret)
> + return ret;
> + addr = PAGE_SIZE;
>
> Typo?
> addr += PAGE_SIZE;
>
Yes, It is typo. I will change it.
Thanks for your review.
Regards.
> + if (addr >= vma->vm_end)
> + return 0;
> + }
> + return 0;
> +}
>
