[RFC PATCH 2/8] brd: use memcpy_from_page() in copy_from_brd()

[Chaitanya Kulkarni <chaitanya.kulkarni@xxxxxxx>]

Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@xxxxxxx>
---
 drivers/block/brd.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/block/brd.c b/drivers/block/brd.c
index d41b7d489e9f..c1f6d768a1b3 100644
--- a/drivers/block/brd.c
+++ b/drivers/block/brd.c
@@ -220,7 +220,6 @@ static void copy_from_brd(void *dst, struct brd_device *brd,
 			sector_t sector, size_t n)
 {
 	struct page *page;
-	void *src;
 	unsigned int offset = (sector & (PAGE_SECTORS-1)) << SECTOR_SHIFT;
 	size_t copy;
 
@@ -236,11 +235,9 @@ static void copy_from_brd(void *dst, struct brd_device *brd,
 		sector += copy >> SECTOR_SHIFT;
 		copy = n - copy;
 		page = brd_lookup_page(brd, sector);
-		if (page) {
-			src = kmap_atomic(page);
-			memcpy(dst, src, copy);
-			kunmap_atomic(src);
-		} else
+		if (page)
+			memcpy_from_page(dst, page, offset, copy);
+		else
 			memset(dst, 0, copy);
 	}
 }
-- 
2.22.1