[PATCH 2/3] block: lift BIP_CHECK_FLAGS to include/linux/bio-integrity.h

To allow for users outside of bio-integrity-auto.c.  Also add a little
comment explaining it.

Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Anuj Gupta <[email protected]>
Reviewed-by: Kanchan Joshi <[email protected]>
---
 block/bio-integrity-auto.c    | 2 --
 include/linux/bio-integrity.h | 3 +++
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/block/bio-integrity-auto.c b/block/bio-integrity-auto.c
index 43ac9f338183..9456dcffd17a 100644
--- a/block/bio-integrity-auto.c
+++ b/block/bio-integrity-auto.c
@@ -44,8 +44,6 @@ static void bio_integrity_verify_fn(struct work_struct *work)
 	bio_endio(bio);
 }
 
-#define BIP_CHECK_FLAGS (BIP_CHECK_GUARD | BIP_CHECK_REFTAG | BIP_CHECK_APPTAG)
-
 /**
  * __bio_integrity_endio - Integrity I/O completion function
  * @bio:	Protected bio
diff --git a/include/linux/bio-integrity.h b/include/linux/bio-integrity.h
index c3dda32fd803..0ea2a8bf7efb 100644
--- a/include/linux/bio-integrity.h
+++ b/include/linux/bio-integrity.h
@@ -17,6 +17,9 @@ enum bip_flags {
 	BIP_MEMPOOL		= 1 << 15, /* buffer backed by mempool */
 };
 
+/* flags that require generate/verify action. */
+#define BIP_CHECK_FLAGS (BIP_CHECK_GUARD | BIP_CHECK_REFTAG | BIP_CHECK_APPTAG)
+
 struct bio_integrity_payload {
 	struct bvec_iter	bip_iter;
 
-- 
2.53.0