Having struct bio allows us to do more in the genrate/verify_fn,
like copying a known good guard tag already available rather than
calculating it.

Index: linux-5.14.0-162.12.1.el9_1/block/bio-integrity.c
===================================================================
--- linux-5.14.0-162.12.1.el9_1.orig/block/bio-integrity.c
+++ linux-5.14.0-162.12.1.el9_1/block/bio-integrity.c
@@ -184,6 +184,9 @@ static blk_status_t bio_integrity_proces

 		iter.data_buf = kaddr;
 		iter.data_size = bv.bv_len;
+		iter.bi_idx = bviter.bi_idx;
+		iter.bio = bio;
+
 		ret = proc_fn(&iter);
 		kunmap_local(kaddr);

Index: linux-5.14.0-162.12.1.el9_1/include/linux/blk-integrity.h
===================================================================
--- linux-5.14.0-162.12.1.el9_1.orig/include/linux/blk-integrity.h
+++ linux-5.14.0-162.12.1.el9_1/include/linux/blk-integrity.h
@@ -19,8 +19,10 @@ struct blk_integrity_iter {
 	sector_t		seed;
 	unsigned int		data_size;
 	unsigned short		interval;
+	RH_KABI_FILL_HOLE(unsigned short bi_idx)
 	unsigned char		tuple_size;
 	const char		*disk_name;
+	RH_KABI_EXTEND(struct bio *bio)
 };

 typedef blk_status_t (integrity_processing_fn) (struct blk_integrity_iter *);