quorum: Clean up quorum_aio_get()

Make sure that all fields of the new QuorumAIOCB are zeroed when the
function returns even without explicitly setting them. This will protect
us when new fields are added, removes some explicit zero assignment and
makes the code a little nicer to read.

Suggested-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>

diff --git a/block/quorum.c b/block/quorum.c
index e2443897b5d8f6075dfef2f70b3806a5a480d19d..86e2072dcea28d3662511192dd89b92eda4dccd0 100644 (file)
--- a/block/quorum.c
+++ b/block/quorum.c
@@ -164,20 +164,17 @@ static QuorumAIOCB *quorum_aio_get(BlockDriverState *bs,
     QuorumAIOCB *acb = g_new(QuorumAIOCB, 1);
     int i;
 
-    acb->co = qemu_coroutine_self();
-    acb->bs = bs;
-    acb->offset = offset;
-    acb->bytes = bytes;
-    acb->qiov = qiov;
-    acb->qcrs = g_new0(QuorumChildRequest, s->num_children);
-    acb->count = 0;
-    acb->success_count = 0;
-    acb->rewrite_count = 0;
-    acb->votes.compare = quorum_sha256_compare;
-    QLIST_INIT(&acb->votes.vote_list);
-    acb->is_read = false;
-    acb->vote_ret = 0;
+    *acb = (QuorumAIOCB) {
+        .co                 = qemu_coroutine_self(),
+        .bs                 = bs,
+        .offset             = offset,
+        .bytes              = bytes,
+        .qiov               = qiov,
+        .votes.compare      = quorum_sha256_compare,
+        .votes.vote_list    = QLIST_HEAD_INITIALIZER(acb.votes.vote_list),
+    };
 
+    acb->qcrs = g_new0(QuorumChildRequest, s->num_children);
     for (i = 0; i < s->num_children; i++) {
         acb->qcrs[i].buf = NULL;
         acb->qcrs[i].ret = 0;