aoe: use bvec_kmap_local in bvcpy

Using local kmaps slightly reduces the chances to stray writes, and
the bvec interface cleans up the code a little bit.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20220303111905.321089-3-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/drivers/block/aoe/aoecmd.c b/drivers/block/aoe/aoecmd.c
index cc11f89..384073e 100644 (file)
--- a/drivers/block/aoe/aoecmd.c
+++ b/drivers/block/aoe/aoecmd.c
@@ -1018,9 +1018,9 @@ bvcpy(struct sk_buff *skb, struct bio *bio, struct bvec_iter iter, long cnt)
        iter.bi_size = cnt;
 
        __bio_for_each_segment(bv, bio, iter, iter) {
-               char *p = kmap_atomic(bv.bv_page) + bv.bv_offset;
+               char *p = bvec_kmap_local(&bv);
                skb_copy_bits(skb, soff, p, bv.bv_len);
-               kunmap_atomic(p);
+               kunmap_local(p);
                soff += bv.bv_len;
        }
 }