From 472278508dce25316e806e45778658c3e4b353b3 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 3 Mar 2022 14:19:03 +0300 Subject: drbd: use bvec_kmap_local in drbd_csum_bio 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 Reviewed-by: Ira Weiny Link: https://lore.kernel.org/r/20220303111905.321089-9-hch@lst.de Signed-off-by: Jens Axboe --- drivers/block/drbd/drbd_worker.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/block') diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c index a5e04b38006b..1b48c8172a07 100644 --- a/drivers/block/drbd/drbd_worker.c +++ b/drivers/block/drbd/drbd_worker.c @@ -326,9 +326,9 @@ void drbd_csum_bio(struct crypto_shash *tfm, struct bio *bio, void *digest) bio_for_each_segment(bvec, bio, iter) { u8 *src; - src = kmap_atomic(bvec.bv_page); - crypto_shash_update(desc, src + bvec.bv_offset, bvec.bv_len); - kunmap_atomic(src); + src = bvec_kmap_local(&bvec); + crypto_shash_update(desc, src, bvec.bv_len); + kunmap_local(src); /* REQ_OP_WRITE_SAME has only one segment, * checksum the payload only once. */ -- cgit v1.2.3