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drm/i915: Drop get/put_pages for scratch page

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While discussing/reviewing __GFP_MOVEABLE behaviour and interactions
with our various page allocations on irc Chris brought up that the
scratch page isn't allocated as moveable, but we still grab/put a
reference to lock it in place. Which is unecessary.

So drop that.

Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
This commit is contained in:
Daniel Vetter
2014-09-12 15:18:13 +02:00
parent e259f172ad
commit c04d016124
1 changed files with 0 additions and 2 deletions
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2
drivers/gpu/drm/i915/i915_gem_gtt.c
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@@ -1752,7 +1752,6 @@ static int setup_scratch_page(struct drm_device *dev)
page = alloc_page(GFP_KERNEL | GFP_DMA32 | __GFP_ZERO);
if (page == NULL)
return -ENOMEM;
get_page(page);
set_pages_uc(page, 1);
#ifdef CONFIG_INTEL_IOMMU
@@ -1777,7 +1776,6 @@ static void teardown_scratch_page(struct drm_device *dev)
set_pages_wb(page, 1);
pci_unmap_page(dev->pdev, dev_priv->gtt.base.scratch.addr,
PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
put_page(page);
__free_page(page);
}