commit 8040446d3080ebd446c619364f60b7643732a6ab
author Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Mon Feb 18 17:09:15 2019 +0300
committer Stefan Hajnoczi <stefanha@redhat.com> Fri Feb 22 09:42:13 2019 +0000
tree 2df00b9cab5dd9a7e685841ffbb2272ab935ce20
parent ee7a883ace6f19d3b3d2c2ef7e4ca86232ab523a

block/stream: use QEMU_IOVEC_INIT_BUF

Use new QEMU_IOVEC_INIT_BUF() instead of
qemu_iovec_init_external( ... , 1), which simplifies the code.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20190218140926.333779-7-vsementsov@virtuozzo.com
Message-Id: <20190218140926.333779-7-vsementsov@virtuozzo.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

block/stream.c

diff --git a/block/stream.c b/block/stream.c
index 7a49ac0..e14579f 100644
--- a/block/stream.c
+++ b/block/stream.c
@@ -41,14 +41,9 @@
                                         int64_t offset, uint64_t bytes,
                                         void *buf)
 {
-    struct iovec iov = {
-        .iov_base = buf,
-        .iov_len  = bytes,
-    };
-    QEMUIOVector qiov;
+    QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, bytes);
 
     assert(bytes < SIZE_MAX);
-    qemu_iovec_init_external(&qiov, &iov, 1);
 
     /* Copy-on-read the unallocated clusters */
     return blk_co_preadv(blk, offset, qiov.size, &qiov, BDRV_REQ_COPY_ON_READ);