+ gpu-drm-ttm-use-copy_highpage.patch added to -mm tree

+ gpu-drm-ttm-use-copy_highpage.patch added to -mm tree

[akpm]

The patch titled
     Subject: gpu/drm/ttm: use copy_highpage
has been added to the -mm tree.  Its filename is
     gpu-drm-ttm-use-copy_highpage.patch

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------------------------------------------------------
From: Akinobu Mita <akinobu.mita@gmail.com>
Subject: 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: David Airlie <airlied@linux.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 drivers/gpu/drm/ttm/ttm_tt.c |   16 ++--------------
 1 file changed, 2 insertions(+), 14 deletions(-)

diff -puN drivers/gpu/drm/ttm/ttm_tt.c~gpu-drm-ttm-use-copy_highpage drivers/gpu/drm/ttm/ttm_tt.c
--- a/drivers/gpu/drm/ttm/ttm_tt.c~gpu-drm-ttm-use-copy_highpage
+++ a/drivers/gpu/drm/ttm/ttm_tt.c
@@ -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, s
 	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, s
 			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);
_

Patches currently in -mm which might be from akinobu.mita@gmail.com are

linux-next.patch
gpu-drm-ttm-use-copy_highpage.patch
cciss-cleanup-bitops-usage.patch
cciss-use-check_signature.patch
drbd-use-copy_highpage.patch