+# LC_HAVE_BIP_ITER_BIO_INTEGRITY_PAYLOAD
+#
+# 4.3 replace interval with interval_exp in 'struct blk_integrity'.
+#
+AC_DEFUN([LC_HAVE_BIP_ITER_BIO_INTEGRITY_PAYLOAD], [
+LB_CHECK_COMPILE([if 'bio_integrity_payload.bip_iter' exist],
+bio_integrity_payload_bip_iter, [
+ #include <linux/bio.h>
+],[
+ ((struct bio_integrity_payload *)0)->bip_iter.bi_size = 0;
+],[
+ AC_DEFINE(HAVE_BIP_ITER_BIO_INTEGRITY_PAYLOAD, 1,
+ [bio_integrity_payload.bip_iter exist])
+])
+]) # LC_HAVE_BIP_ITER_BIO_INTEGRITY_PAYLOAD
+
+#
+# LC_BIO_INTEGRITY_PREP_FN
+#
+# Lustre kernel patch extents bio_integrity_prep to accept optional
+# generate/verify_fn as extra args.
+#
+AC_DEFUN([LC_BIO_INTEGRITY_PREP_FN], [
+LB_CHECK_COMPILE([if 'bio_integrity_prep_fn' exists],
+bio_integrity_prep_fn, [
+ #include <linux/bio.h>
+],[
+ bio_integrity_prep_fn(NULL, NULL, NULL);
+],[
+ AC_DEFINE(HAVE_BIO_INTEGRITY_PREP_FN, 1,
+ [kernel has bio_integrity_prep_fn])
+ AC_SUBST(PATCHED_INTEGRITY_INTF)
+],[
+ AC_SUBST(PATCHED_INTEGRITY_INTF, [#])
+])
+]) # LC_BIO_INTEGRITY_PREP_FN
+
+#