gpu/drm/ttm: use copy_highpage
Use copy_highpage() to copy from one page to another.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c
index fa09daf..11c9369 100644
--- a/drivers/gpu/drm/ttm/ttm_tt.c
+++ b/drivers/gpu/drm/ttm/ttm_tt.c
@@ -290,8 +290,6 @@
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 @@
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 @@
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 @@
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);