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authorChristoph Hellwig <hch@lst.de>2022-03-03 14:18:56 +0300
committerJens Axboe <axboe@kernel.dk>2022-03-04 12:29:20 -0700
commit143a70b8b4300faa92ad82468f65dccd440e7957 (patch)
treed79c492462b6f4e1ba78a4087ff9dd9dd8194733 /arch/xtensa
parentc48d8c5c0c40bb2e7c88543ede481c26f6649d14 (diff)
iss-simdisk: use bvec_kmap_local in simdisk_submit_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> Acked-by: Max Filippov <jcmvbkbc@gmail.com> Link: https://lore.kernel.org/r/20220303111905.321089-2-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'arch/xtensa')
-rw-r--r--arch/xtensa/platforms/iss/simdisk.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/xtensa/platforms/iss/simdisk.c b/arch/xtensa/platforms/iss/simdisk.c
index 8eb6ad1a3a1d..0f0e0724397f 100644
--- a/arch/xtensa/platforms/iss/simdisk.c
+++ b/arch/xtensa/platforms/iss/simdisk.c
@@ -108,13 +108,13 @@ static void simdisk_submit_bio(struct bio *bio)
sector_t sector = bio->bi_iter.bi_sector;
bio_for_each_segment(bvec, bio, iter) {
- char *buffer = kmap_atomic(bvec.bv_page) + bvec.bv_offset;
+ char *buffer = bvec_kmap_local(&bvec);
unsigned len = bvec.bv_len >> SECTOR_SHIFT;
simdisk_transfer(dev, sector, len, buffer,
bio_data_dir(bio) == WRITE);
sector += len;
- kunmap_atomic(buffer);
+ kunmap_local(buffer);
}
bio_endio(bio);