[dm-devel] [PATCH] bio-integrity: revert "stop abusing bi_end_io"

[Christoph Hellwig]

On Sat, Aug 05, 2017 at 04:19:30PM -0400, Martin K. Petersen wrote:
> A bio flag is probably the path of least resistance. It already exists,
> actually: BIP_BLOCK_INTEGRITY. But we'll need to make sure it gets
> masked out when a bio is cloned. And then we can key off of that and
> REQ_OP_READ in the endio function.

bio_integrity_clone doesn't even clone it - it allocates a new
bip and then only copies over bip_vec, bip_vcnt and bit_iter.

I'll preparate a patch for this and will send it out together with
the orginal hotfix for the verify_fn, which also needs a trivial
line length fix anyway.