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@xxxxxx>
Reviewed-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
---
block/bio-integrity.c | 14 ++++++--------
1 file changed, 6 insertions(+), 8 deletions(-)
diff --git a/block/bio-integrity.c b/block/bio-integrity.c
index 4b4eb8964a6f..8f54d49dc500 100644
--- a/block/bio-integrity.c
+++ b/block/bio-integrity.c
@@ -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;
}
--
2.30.2
