Use memcpy_from_bvec instead of open coding the logic.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
drivers/md/dm-log-writes.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/md/dm-log-writes.c b/drivers/md/dm-log-writes.c
index d93a4db235124..eeaf729287f06 100644
--- a/drivers/md/dm-log-writes.c
+++ b/drivers/md/dm-log-writes.c
@@ -753,7 +753,7 @@ static int log_writes_map(struct dm_target *ti, struct bio *bio)
*/
bio_for_each_segment(bv, bio, iter) {
struct page *page;
- void *src, *dst;
+ void *dst;
page = alloc_page(GFP_NOIO);
if (!page) {
@@ -765,11 +765,9 @@ static int log_writes_map(struct dm_target *ti, struct bio *bio)
return DM_MAPIO_KILL;
}
- src = kmap_atomic(bv.bv_page);
dst = kmap_atomic(page);
- memcpy(dst, src + bv.bv_offset, bv.bv_len);
+ memcpy_from_bvec(dst, &bv);
kunmap_atomic(dst);
- kunmap_atomic(src);
block->vecs[i].bv_page = page;
block->vecs[i].bv_len = bv.bv_len;
block->vec_cnt++;
--
2.30.2
--
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