[PATCH 04/10] zram: use memcpy_from_bvec in zram_bvec_write

Christoph Hellwig
2022-03-03T11:19:57Z

Use memcpy_from_bvec instead of open coding the logic.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
---
drivers/block/zram/zram_drv.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index 14becdf2815df..e9474b02012de 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -1465,7 +1465,6 @@ static int zram_bvec_write(struct zram *zram, struct bio_vec *bvec,
{
int ret;
struct page *page = NULL;
- void *src;
struct bio_vec vec;

vec = *bvec;
@@ -1483,11 +1482,9 @@ static int zram_bvec_write(struct zram *zram, struct bio_vec *bvec,
if (ret)
goto out;

- src = kmap_atomic(bvec->bv_page);
dst = kmap_atomic(page);
- memcpy(dst + offset, src + bvec->bv_offset, bvec->bv_len);
+ memcpy_from_bvec(dst + offset, bvec);
kunmap_atomic(dst);
- kunmap_atomic(src);

vec.bv_page = page;
vec.bv_len = PAGE_SIZE;
--
2.30.2