Use library helper memcpy_page() to copy source page into destination
instead of having duplicate code. This also removes deprecated API
kmap_atomic() from :include/linux/highmem.h:
"kmap_atomic - Atomically map a page for temporary usage - Deprecated!"
Signed-off-by: Chaitanya Kulkarni <kch@xxxxxxxxxx>
---
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 9e6b032c8ecc..947bba174e1e 100644
--- a/drivers/block/null_blk/main.c
+++ b/drivers/block/null_blk/main.c
@@ -1112,7 +1112,6 @@ 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);
@@ -1126,11 +1125,7 @@ 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);
--
2.29.0
