[PATCH v4 04/11] block: define meta io descriptor

[Anuj Gupta]

From: Kanchan Joshi <joshi.k at samsung.com>

Introduces a new 'uio_meta' structure that upper layer can
use to pass the meta/integrity information.

Signed-off-by: Kanchan Joshi <joshi.k at samsung.com>
Signed-off-by: Anuj Gupta <anuj20.g at samsung.com>
---
 include/linux/bio-integrity.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/include/linux/bio-integrity.h b/include/linux/bio-integrity.h
index 90aab50a3e14..529ec7a8df20 100644
--- a/include/linux/bio-integrity.h
+++ b/include/linux/bio-integrity.h
@@ -30,6 +30,16 @@ struct bio_integrity_payload {
 	struct bio_vec		bip_inline_vecs[];/* embedded bvec array */
 };
 
+/* flags for integrity meta */
+typedef __u16 __bitwise meta_flags_t;
+
+struct uio_meta {
+	meta_flags_t	flags;
+	u16		app_tag;
+	u32		seed;
+	struct iov_iter iter;
+};
+
 #define BIP_CLONE_FLAGS (BIP_MAPPED_INTEGRITY | BIP_CTRL_NOCHECK | \
 			 BIP_DISK_NOCHECK | BIP_IP_CHECKSUM)
 
-- 
2.25.1