From 27db2717085198862a5b96dc8f00e527bf45c950 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 19 Oct 2021 15:44:05 +0200 Subject: dm log writes: use memcpy_from_bvec in log_writes_map Use memcpy_from_bvec instead of open coding the logic. Signed-off-by: Christoph Hellwig Signed-off-by: Mike Snitzer --- drivers/md/dm-log-writes.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) (limited to 'drivers/md') diff --git a/drivers/md/dm-log-writes.c b/drivers/md/dm-log-writes.c index d93a4db23512..eeaf729287f0 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++; -- cgit v1.2.3