From: Souptick Joarder <jrdr.linux-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: Andrew Morton
<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>,
Matthew Wilcox <willy-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>,
Michal Hocko <mhocko-IBi9RG/b67k@public.gmane.org>,
joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org,
Russell King - ARM Linux
<linux-I+IVW8TIWO2tmTQ+vhA3Yw@public.gmane.org>,
robin.murphy-5wv7dgnIgG8@public.gmane.org
Cc: Linux-MM <linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org>,
iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCHv2 6/9] iommu/dma-iommu.c: Convert to use vm_insert_range
Date: Sun, 3 Feb 2019 17:42:09 +0530 [thread overview]
Message-ID: <CAFqt6zbw4wbjMYjRs_Sy6BegzqOSq_YK27rhjHw_dr_jR8neAw@mail.gmail.com> (raw)
In-Reply-To: <20190131031222.GA2356@jordon-HP-15-Notebook-PC>
Hi Joerg,
On Thu, Jan 31, 2019 at 8:38 AM Souptick Joarder <jrdr.linux-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>
> Convert to use vm_insert_range() to map range of kernel
> memory to user vma.
>
> Signed-off-by: Souptick Joarder <jrdr.linux-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Can you please help to review this patch ?
> ---
> drivers/iommu/dma-iommu.c | 12 +-----------
> 1 file changed, 1 insertion(+), 11 deletions(-)
>
> diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
> index d19f3d6..bdf14b87 100644
> --- a/drivers/iommu/dma-iommu.c
> +++ b/drivers/iommu/dma-iommu.c
> @@ -620,17 +620,7 @@ struct page **iommu_dma_alloc(struct device *dev, size_t size, gfp_t gfp,
>
> int iommu_dma_mmap(struct page **pages, size_t size, struct vm_area_struct *vma)
> {
> - unsigned long uaddr = vma->vm_start;
> - unsigned int i, count = PAGE_ALIGN(size) >> PAGE_SHIFT;
> - int ret = -ENXIO;
> -
> - for (i = vma->vm_pgoff; i < count && uaddr < vma->vm_end; i++) {
> - ret = vm_insert_page(vma, uaddr, pages[i]);
> - if (ret)
> - break;
> - uaddr += PAGE_SIZE;
> - }
> - return ret;
> + return vm_insert_range(vma, pages, PAGE_ALIGN(size) >> PAGE_SHIFT);
> }
>
> static dma_addr_t __iommu_dma_map(struct device *dev, phys_addr_t phys,
> --
> 1.9.1
>
prev parent reply other threads:[~2019-02-03 12:12 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-31 3:12 [PATCHv2 6/9] iommu/dma-iommu.c: Convert to use vm_insert_range Souptick Joarder
2019-02-03 12:12 ` Souptick Joarder [this message]
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