This is disallowed. Reviewed-by: Christoph Hellwig <hch@xxxxxx> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@xxxxxxx> Reviewed-by: Hannes Reinecke <hare@xxxxxxx> Signed-off-by: John Garry <john.g.garry@xxxxxxxxxx> --- block/bio.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/block/bio.c b/block/bio.c index 948b22825510..699a78c85c75 100644 --- a/block/bio.c +++ b/block/bio.c @@ -1674,6 +1674,10 @@ struct bio *bio_split(struct bio *bio, int sectors, if (WARN_ON_ONCE(bio_op(bio) == REQ_OP_ZONE_APPEND)) return ERR_PTR(-EINVAL); + /* atomic writes cannot be split */ + if (bio->bi_opf & REQ_ATOMIC) + return ERR_PTR(-EINVAL); + split = bio_alloc_clone(bio->bi_bdev, bio, gfp, bs); if (!split) return ERR_PTR(-ENOMEM); -- 2.31.1
