From 5027579f6784fee938b93024a0a5345e976630d4 Mon Sep 17 00:00:00 2001
From: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Date: Wed, 15 May 2019 09:39:08 +0900
Subject: [PATCH] dif: Enable fast forward from the middle of the iovec array

Previously _iov_iter_fast_forward can fast forward only from the
start of the iovec array. This patch enables fast forward in the
middle of the iovec array.

Change-Id: I801fc46dec3c759e1d754042abe15e7100cbdc17
Signed-off-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/453734
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
---
 lib/util/dif.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/util/dif.c b/lib/util/dif.c
index c3d323665..337aa6ed5 100644
--- a/lib/util/dif.c
+++ b/lib/util/dif.c
@@ -89,7 +89,7 @@ _dif_sgl_get_buf(struct _dif_sgl *s, void **_buf, uint32_t *_buf_len)
 static void
 _dif_sgl_fast_forward(struct _dif_sgl *s, uint32_t offset)
 {
-	s->iov_offset = offset;
+	s->iov_offset += offset;
 	while (s->iovcnt != 0) {
 		if (s->iov_offset < s->iov->iov_len) {
 			break;