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block: mark the bio as cloned in bio_iov_bvec_set 

bio_iov_bvec_set clones the bio_vecs from the iter, and thus should be
treated like a cloned bio in every respect.  That also includes not
touching bi_max_vecs as that is a property of the bio allocation and not
its current payload.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2021-02-02 18:19:27 +01:00 committed by Jens Axboe
parent ed97ce5e1d
commit 977be01273
1 changed files with 1 additions and 1 deletions
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block/bio.c
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@ -937,11 +937,11 @@ static int bio_iov_bvec_set(struct bio *bio, struct iov_iter *iter)
WARN_ON_ONCE(BVEC_POOL_IDX(bio) != 0);
bio->bi_vcnt = iter->nr_segs;
bio->bi_max_vecs = iter->nr_segs;
bio->bi_io_vec = (struct bio_vec *)iter->bvec;
bio->bi_iter.bi_bvec_done = iter->iov_offset;
bio->bi_iter.bi_size = iter->count;
bio_set_flag(bio, BIO_NO_PAGE_REF);
bio_set_flag(bio, BIO_CLONED);
iov_iter_advance(iter, iter->count);
return 0;