Re: [PATCH 2/2] block: don't allow splitting of a REQ_NOWAIT bio

On Wed, Jan 04, 2023 at 09:09:38AM -0700, Jens Axboe wrote:

split:

• /*

• * We can't sanely support splitting for a REQ_NOWAIT bio. End it
  

• * with EAGAIN if splitting is required and return an error pointer.
  

• */
  

• if (bio->bi_opf & REQ_NOWAIT) {

• bio->bi_status = BLK_STS_AGAIN;
  

• bio_endio(bio);
  

• return ERR_PTR(-EAGAIN);
  

• }

Hmm. Just completing the bio here seems a little dangerous in terms of ownership. What speaks against letting the caller do it?