Make bio_iov_bvec_set() accept a pointer to const iov_iter, which means
that we can drop the undesirable casting to struct iov_iter pointer in
blk_rq_map_user_bvec().
Signed-off-by: John Garry <john.g.garry@xxxxxxxxxx>
diff --git a/block/bio.c b/block/bio.c
index 699a78c85c75..d5bdc31d88d3 100644
--- a/block/bio.c
+++ b/block/bio.c
@@ -1171,7 +1171,7 @@ void __bio_release_pages(struct bio *bio, bool mark_dirty)
}
EXPORT_SYMBOL_GPL(__bio_release_pages);
-void bio_iov_bvec_set(struct bio *bio, struct iov_iter *iter)
+void bio_iov_bvec_set(struct bio *bio, const struct iov_iter *iter)
{
WARN_ON_ONCE(bio->bi_max_vecs);
diff --git a/block/blk-map.c b/block/blk-map.c
index b5fd1d857461..894009b2d881 100644
--- a/block/blk-map.c
+++ b/block/blk-map.c
@@ -574,7 +574,7 @@ static int blk_rq_map_user_bvec(struct request *rq, const struct iov_iter *iter)
bio = blk_rq_map_bio_alloc(rq, 0, GFP_KERNEL);
if (!bio)
return -ENOMEM;
- bio_iov_bvec_set(bio, (struct iov_iter *)iter);
+ bio_iov_bvec_set(bio, iter);
/* check that the data layout matches the hardware restrictions */
ret = bio_split_rw_at(bio, lim, &nsegs, max_bytes);
diff --git a/include/linux/bio.h b/include/linux/bio.h
index 60830a6a5939..7a1b3b1a8fed 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -423,7 +423,7 @@ void __bio_add_page(struct bio *bio, struct page *page,
void bio_add_folio_nofail(struct bio *bio, struct folio *folio, size_t len,
size_t off);
int bio_iov_iter_get_pages(struct bio *bio, struct iov_iter *iter);
-void bio_iov_bvec_set(struct bio *bio, struct iov_iter *iter);
+void bio_iov_bvec_set(struct bio *bio, const struct iov_iter *iter);
void __bio_release_pages(struct bio *bio, bool mark_dirty);
extern void bio_set_pages_dirty(struct bio *bio);
extern void bio_check_pages_dirty(struct bio *bio);
--
2.31.1
