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block: use bvec_kmap_local in bio_integrity_process

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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: Martin K. Petersen <martin.petersen@oracle.com>
Link: https://lore.kernel.org/r/20210727055646.118787-16-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2021-07-27 07:56:46 +02:00 committed by Jens Axboe
parent 8aec120a9c
commit 503469b5b3
1 changed files with 6 additions and 8 deletions
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14
block/bio-integrity.c
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@ -172,18 +172,16 @@ static blk_status_t bio_integrity_process(struct bio *bio,
iter.prot_buf = prot_buf;
__bio_for_each_segment(bv, bio, bviter, *proc_iter) {
void *kaddr = kmap_atomic(bv.bv_page);
void *kaddr = bvec_kmap_local(&bv);
iter.data_buf = kaddr + bv.bv_offset;
iter.data_buf = kaddr;
iter.data_size = bv.bv_len;
ret = proc_fn(&iter);
if (ret) {
kunmap_atomic(kaddr);
return ret;
}
kunmap_local(kaddr);
if (ret)
break;
kunmap_atomic(kaddr);
}
return ret;
}