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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>
This commit is contained in:
Akinobu Mita 2012-09-25 11:57:02 +00:00 committed by Dave Airlie
parent 27796b465d
commit 259a290e78
1 changed files with 2 additions and 14 deletions
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16
drivers/gpu/drm/ttm/ttm_tt.c
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@ -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);