diff options
| author |   Christoph Hellwig <hch@lst.de> | 2022-03-03 14:19:03 +0300 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2022-03-04 12:29:21 -0700 |
| commit | 472278508dce25316e806e45778658c3e4b353b3 (patch) | |
| tree | 4c78a6d5e62f18928d98fb2ed7dfd473f08ee3a2 /drivers/block | |
| parent | bcache: use bvec_kmap_local in bio_csum (diff) | |
| download | linux-dev-472278508dce25316e806e45778658c3e4b353b3.tar.xz linux-dev-472278508dce25316e806e45778658c3e4b353b3.zip | |
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 <hch@lst.de>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Link: https://lore.kernel.org/r/20220303111905.321089-9-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/drbd/drbd_worker.c | 6 |
1 files changed, 3 insertions, 3 deletions
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. */ |