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Commit 259a290e authored by Akinobu Mita's avatar Akinobu Mita Committed by Dave Airlie
Browse files

gpu/drm/ttm: use copy_highpage 



Use copy_highpage() to copy from one page to another.

Signed-off-by: default avatarAkinobu Mita <akinobu.mita@gmail.com>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent 27796b46

drivers/gpu/drm/ttm/ttm_tt.c

+2 −14
Original line number Diff line number Diff line
@@ -290,8 +290,6 @@ int ttm_tt_swapin(struct ttm_tt *ttm) 
	struct file *swap_storage;

	struct page *from_page;

	struct page *to_page;

	void *from_virtual;

	void *to_virtual;

	int i;

	int ret = -ENOMEM;
@@ -311,11 +309,7 @@ int ttm_tt_swapin(struct ttm_tt *ttm) 
			goto out_err;



		preempt_disable();

		from_virtual = kmap_atomic(from_page);

		to_virtual = kmap_atomic(to_page);

		memcpy(to_virtual, from_virtual, PAGE_SIZE);

		kunmap_atomic(to_virtual);

		kunmap_atomic(from_virtual);

		copy_highpage(to_page, from_page);

		preempt_enable();

		page_cache_release(from_page);

	}
@@ -336,8 +330,6 @@ int ttm_tt_swapout(struct ttm_tt *ttm, struct file *persistent_swap_storage) 
	struct file *swap_storage;

	struct page *from_page;

	struct page *to_page;

	void *from_virtual;

	void *to_virtual;

	int i;

	int ret = -ENOMEM;
@@ -367,11 +359,7 @@ int ttm_tt_swapout(struct ttm_tt *ttm, struct file *persistent_swap_storage) 
			goto out_err;

		}

		preempt_disable();

		from_virtual = kmap_atomic(from_page);

		to_virtual = kmap_atomic(to_page);

		memcpy(to_virtual, from_virtual, PAGE_SIZE);

		kunmap_atomic(to_virtual);

		kunmap_atomic(from_virtual);

		copy_highpage(to_page, from_page);

		preempt_enable();

		set_page_dirty(to_page);

		mark_page_accessed(to_page);