[RFC PATCH 3/8] null_blk: use memcpy_page() in copy_to_nullb()

[Chaitanya Kulkarni <chaitanya.kulkarni@xxxxxxx>]

Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@xxxxxxx>
---
 drivers/block/null_blk/main.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/drivers/block/null_blk/main.c b/drivers/block/null_blk/main.c
index d6c821d48090..c9b6db82b07c 100644
--- a/drivers/block/null_blk/main.c
+++ b/drivers/block/null_blk/main.c
@@ -1010,7 +1010,6 @@ static int copy_to_nullb(struct nullb *nullb, struct page *source,
 	size_t temp, count = 0;
 	unsigned int offset;
 	struct nullb_page *t_page;
-	void *dst, *src;
 
 	while (count < n) {
 		temp = min_t(size_t, nullb->dev->blocksize, n - count);
@@ -1024,11 +1023,7 @@ static int copy_to_nullb(struct nullb *nullb, struct page *source,
 		if (!t_page)
 			return -ENOSPC;
 
-		src = kmap_atomic(source);
-		dst = kmap_atomic(t_page->page);
-		memcpy(dst + offset, src + off + count, temp);
-		kunmap_atomic(dst);
-		kunmap_atomic(src);
+		memcpy_page(t_page->page, offset, source, off + count, temp);
 
 		__set_bit(sector & SECTOR_MASK, t_page->bitmap);
 
-- 
2.22.1