[115/192] vfio: use vma_lookup() instead of find_vma_intersection()

Commit Message

Andrew Morton June 29, 2021, 2:39 a.m. UTC

From: Liam Howlett <[e-mail]>
Subject: vfio: use vma_lookup() instead of find_vma_intersection()

vma_lookup() finds the vma of a specific address with a cleaner interface
and is more readable.

Link: https://lkml.kernel.org/r/[e-mail]
Signed-off-by: Liam R. Howlett <[e-mail]>
Reviewed-by: Laurent Dufour <[e-mail]>
Acked-by: David Hildenbrand <[e-mail]>
Acked-by: Davidlohr Bueso <[e-mail]>
Cc: Geert Uytterhoeven <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
---

 drivers/vfio/vfio_iommu_type1.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Patch

--- a/drivers/vfio/vfio_iommu_type1.c~vfio-use-vma_lookup-instead-of-find_vma_intersection
+++ a/drivers/vfio/vfio_iommu_type1.c
@@ -567,7 +567,7 @@  static int vaddr_get_pfns(struct mm_stru
 	vaddr = untagged_addr(vaddr);
 
 retry:
-	vma = find_vma_intersection(mm, vaddr, vaddr + 1);
+	vma = vma_lookup(mm, vaddr);
 
 	if (vma && vma->vm_flags & VM_PFNMAP) {
 		ret = follow_fault_pfn(vma, mm, vaddr, pfn, prot & IOMMU_WRITE);