diff options
| author |   Christoph Hellwig <hch@lst.de> | 2022-03-03 14:19:02 +0300 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2022-03-04 12:29:21 -0700 |
| commit | 07fee7aba5472d0e65345146a68b4bd1a8b656c3 (patch) | |
| tree | 9db9a8b286f92f6cec84a02cd03a3783644d1775 /drivers/md/bcache/request.c | |
| parent | nvdimm-btt: use bvec_kmap_local in btt_rw_integrity (diff) | |
| download | wireguard-linux-07fee7aba5472d0e65345146a68b4bd1a8b656c3.tar.xz wireguard-linux-07fee7aba5472d0e65345146a68b4bd1a8b656c3.zip | |
bcache: use bvec_kmap_local in bio_csum
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/20220303111905.321089-8-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/md/bcache/request.c')
| -rw-r--r-- | drivers/md/bcache/request.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c index 6869e010475a..fdd0194f84dd 100644 --- a/drivers/md/bcache/request.c +++ b/drivers/md/bcache/request.c @@ -44,10 +44,10 @@ static void bio_csum(struct bio *bio, struct bkey *k) uint64_t csum = 0; bio_for_each_segment(bv, bio, iter) { - void *d = kmap(bv.bv_page) + bv.bv_offset; + void *d = bvec_kmap_local(&bv); csum = crc64_be(csum, d, bv.bv_len); - kunmap(bv.bv_page); + kunmap_local(d); } k->ptr[KEY_PTRS(k)] = csum & (~0ULL >> 1); |