On 22/11/17 15:20, Vasyl Gomonovych wrote: > Use vma_pages function on vma object instead of explicit computation. > arch/arm/mm/dma-mapping.c:849:36-42: WARNING: Consider using vma_pages helper > on vma > Generated by: scripts/coccinelle/api/vma_pages.cocci > > Signed-off-by: Vasyl Gomonovych <[email protected]> > --- > arch/arm/mm/dma-mapping.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c > index fcf1473d6fed..855427620b01 100644 > --- a/arch/arm/mm/dma-mapping.c > +++ b/arch/arm/mm/dma-mapping.c > @@ -846,7 +846,7 @@ static int __arm_dma_mmap(struct device *dev, struct > vm_area_struct *vma, > unsigned long attrs) > { > int ret; > - unsigned long nr_vma_pages = (vma->vm_end - vma->vm_start) >> > PAGE_SHIFT; > + unsigned long nr_vma_pages = vma_pages(vma); > unsigned long nr_pages = PAGE_ALIGN(size) >> PAGE_SHIFT; > unsigned long pfn = dma_to_pfn(dev, dma_addr); > unsigned long off = vma->vm_pgoff; >
Colin already submitted similar patch a couple days ago [1]. [1] https://lkml.org/lkml/2017/11/19/322 Vladimir
