[Intel-gfx] [PATCH] drm/i915: Convert open-coded use of vma_pages()

[Chris Wilson]

If we want to know how many pages a VMA spans, we can use vma_pages() to
find out. We have one such invocation inside our faulthandler, so
convert it. (We have two other that want the size in bytes rather than
pages, food for future thought.)

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/i915_gem.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 84f4953c7408..7a210c3a6d10 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -1794,8 +1794,7 @@ int i915_gem_fault(struct vm_area_struct *area, struct vm_fault *vmf)
 		view.params.partial.offset = rounddown(page_offset, chunk_size);
 		view.params.partial.size =
 			min_t(unsigned int, chunk_size,
-			      (area->vm_end - area->vm_start) / PAGE_SIZE -
-			      view.params.partial.offset);
+			      vma_pages(area) - view.params.partial.offset);
 
 		/* If the partial covers the entire object, just create a
 		 * normal VMA.
-- 
2.9.3