From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Date: Tue, 18 Dec 2018 01:54:48 +0530 From: Souptick Joarder Subject: [PATCH v4 6/9] iommu/dma-iommu.c: Convert to use vm_insert_range Message-ID: <20181217202448.GA14918@jordon-HP-15-Notebook-PC> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org To: akpm@linux-foundation.org, willy@infradead.org, mhocko@suse.com, joro@8bytes.org Cc: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org List-ID: Convert to use vm_insert_range() to map range of kernel memory to user vma. Signed-off-by: Souptick Joarder Reviewed-by: Matthew Wilcox --- drivers/iommu/dma-iommu.c | 13 +++---------- 1 file changed, 3 insertions(+), 10 deletions(-) diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c index d1b0475..de7ffd8 100644 --- a/drivers/iommu/dma-iommu.c +++ b/drivers/iommu/dma-iommu.c @@ -622,17 +622,10 @@ 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; + unsigned long count = PAGE_ALIGN(size) >> PAGE_SHIFT; - 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, vma->vm_start, pages + vma->vm_pgoff, + count - vma->vm_pgoff); } static dma_addr_t __iommu_dma_map(struct device *dev, phys_addr_t phys, -- 1.9.1