From ab8a0460a976474f5c04e975c8898d2158374251 Mon Sep 17 00:00:00 2001
From: Dariusz Stojaczyk <dariuszx.stojaczyk@intel.com>
Date: Wed, 18 Oct 2017 15:16:02 +0200
Subject: [PATCH] bdev: clear bdev_io->iov for unmap

Values from previous bdev_ios
were reused and were taken into
account e.g. in bdev_io_get_buf()
to check if a buffer is already
assigned.

Change-Id: I239aaf83a4ce8a9342c1820e3ac9e9ccf6a28336
Signed-off-by: Dariusz Stojaczyk <dariuszx.stojaczyk@intel.com>
Reviewed-on: https://review.gerrithub.io/382959
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
---
 lib/bdev/bdev.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/bdev/bdev.c b/lib/bdev/bdev.c
index 9cca51361..7f733fddd 100644
--- a/lib/bdev/bdev.c
+++ b/lib/bdev/bdev.c
@@ -1157,6 +1157,8 @@ spdk_bdev_unmap_blocks(struct spdk_bdev_desc *desc, struct spdk_io_channel *ch,
 
 	bdev_io->ch = channel;
 	bdev_io->type = SPDK_BDEV_IO_TYPE_UNMAP;
+	bdev_io->u.bdev.iov.iov_base = NULL;
+	bdev_io->u.bdev.iov.iov_len = 0;
 	bdev_io->u.bdev.iovs = &bdev_io->u.bdev.iov;
 	bdev_io->u.bdev.iovcnt = 1;
 	bdev_io->u.bdev.offset_blocks = offset_blocks;