Blame SOURCES/kvm-block-qdict-Tweak-qdict_flatten_qdict-qdict_flatten_.patch

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From a558dd841d434d95377dadc45c79d1de1b6f8d2d Mon Sep 17 00:00:00 2001
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From: Markus Armbruster <armbru@redhat.com>
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Date: Mon, 18 Jun 2018 08:43:23 +0200
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Subject: [PATCH 16/54] block-qdict: Tweak qdict_flatten_qdict(),
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 qdict_flatten_qlist()
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RH-Author: Markus Armbruster <armbru@redhat.com>
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Message-id: <20180618084330.30009-17-armbru@redhat.com>
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Patchwork-id: 80725
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O-Subject: [RHEL-7.6 qemu-kvm-rhev PATCH 16/23] block-qdict: Tweak qdict_flatten_qdict(), qdict_flatten_qlist()
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Bugzilla: 1557995
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RH-Acked-by: Max Reitz <mreitz@redhat.com>
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RH-Acked-by: Jeffrey Cody <jcody@redhat.com>
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RH-Acked-by: Kevin Wolf <kwolf@redhat.com>
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qdict_flatten_qdict() skips copying scalars from @qdict to @target
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when the two are the same.  Fair enough, but it uses a non-obvious
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test for "same".  Replace it by the obvious one.  While there, improve
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comments.
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Signed-off-by: Markus Armbruster <armbru@redhat.com>
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Reviewed-by: Kevin Wolf <kwolf@redhat.com>
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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(cherry picked from commit f1b34a248e9785e8cc0d28a1685d2cf4460bb256)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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 qobject/block-qdict.c | 14 +++++++++-----
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 1 file changed, 9 insertions(+), 5 deletions(-)
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diff --git a/qobject/block-qdict.c b/qobject/block-qdict.c
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index f32df34..a4e1c8d 100644
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--- a/qobject/block-qdict.c
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+++ b/qobject/block-qdict.c
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@@ -71,12 +71,15 @@ static void qdict_flatten_qlist(QList *qlist, QDict *target, const char *prefix)
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         value = qlist_entry_obj(entry);
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         new_key = g_strdup_printf("%s.%i", prefix, i);
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+        /*
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+         * Flatten non-empty QDict and QList recursively into @target,
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+         * copy other objects to @target
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+         */
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         if (qobject_type(value) == QTYPE_QDICT) {
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             qdict_flatten_qdict(qobject_to(QDict, value), target, new_key);
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         } else if (qobject_type(value) == QTYPE_QLIST) {
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             qdict_flatten_qlist(qobject_to(QList, value), target, new_key);
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         } else {
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-            /* All other types are moved to the target unchanged. */
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             qdict_put_obj(target, new_key, qobject_ref(value));
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         }
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@@ -101,9 +104,11 @@ static void qdict_flatten_qdict(QDict *qdict, QDict *target, const char *prefix)
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             new_key = g_strdup_printf("%s.%s", prefix, entry->key);
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         }
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+        /*
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+         * Flatten non-empty QDict and QList recursively into @target,
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+         * copy other objects to @target
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+         */
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         if (qobject_type(value) == QTYPE_QDICT) {
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-            /* Entries of QDicts are processed recursively, the QDict object
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-             * itself disappears. */
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             qdict_flatten_qdict(qobject_to(QDict, value), target,
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                                 new_key ? new_key : entry->key);
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             qdict_del(qdict, entry->key);
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@@ -111,8 +116,7 @@ static void qdict_flatten_qdict(QDict *qdict, QDict *target, const char *prefix)
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             qdict_flatten_qlist(qobject_to(QList, value), target,
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                                 new_key ? new_key : entry->key);
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             qdict_del(qdict, entry->key);
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-        } else if (prefix) {
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-            /* All other objects are moved to the target unchanged. */
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+        } else if (target != qdict) {
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             qdict_put_obj(target, new_key, qobject_ref(value));
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             qdict_del(qdict, entry->key);
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         }
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-- 
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1.8.3.1
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