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iss-simdisk: use bvec_kmap_local in simdisk_submit_bio

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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>
This commit is contained in:
Christoph Hellwig 2022-03-03 14:18:56 +03:00 committed by Jens Axboe
parent c48d8c5c0c
commit 143a70b8b4
1 changed files with 2 additions and 2 deletions
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4
arch/xtensa/platforms/iss/simdisk.c
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@ -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);