{"id":2222002,"url":"http://patchwork.ozlabs.org/api/1.1/patches/2222002/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260410150457.85190-11-zhangckid@gmail.com/","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/1.1/projects/14/?format=json","name":"QEMU Development","link_name":"qemu-devel","list_id":"qemu-devel.nongnu.org","list_email":"qemu-devel@nongnu.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20260410150457.85190-11-zhangckid@gmail.com>","date":"2026-04-10T15:04:53","name":"[V6,10/14] virtio-balloon: Update tracking iothread users with holder name","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"38a5ee004c5e2e570a543608cde3ab019fccc1e0","submitter":{"id":72278,"url":"http://patchwork.ozlabs.org/api/1.1/people/72278/?format=json","name":"Zhang Chen","email":"zhangckid@gmail.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260410150457.85190-11-zhangckid@gmail.com/mbox/","series":[{"id":499477,"url":"http://patchwork.ozlabs.org/api/1.1/series/499477/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/list/?series=499477","date":"2026-04-10T15:04:43","name":"iothread: Support tracking and querying IOThread holders","version":6,"mbox":"http://patchwork.ozlabs.org/series/499477/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2222002/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2222002/checks/","tags":{},"headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=W6Jjm37t;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; 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David Alan Gilbert\" ,\n Eric Blake , Markus Armbruster ,\n \"Michael S . Tsirkin\" ,\n Stefan Hajnoczi ","Cc":"Zhang Chen ","Subject":"[PATCH V6 10/14] virtio-balloon: Update tracking iothread users with\n holder name","Date":"Fri, 10 Apr 2026 23:04:53 +0800","Message-ID":"<20260410150457.85190-11-zhangckid@gmail.com>","X-Mailer":"git-send-email 2.49.0","In-Reply-To":"<20260410150457.85190-1-zhangckid@gmail.com>","References":"<20260410150457.85190-1-zhangckid@gmail.com>","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","Received-SPF":"pass client-ip=2607:f8b0:4864:20::1035;\n envelope-from=zhangckid@gmail.com; helo=mail-pj1-x1035.google.com","X-Spam_score_int":"-20","X-Spam_score":"-2.1","X-Spam_bar":"--","X-Spam_report":"(-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1,\n DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001,\n RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001,\n SPF_PASS=-0.001 autolearn=ham autolearn_force=no","X-Spam_action":"no action","X-BeenThere":"qemu-devel@nongnu.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"qemu development ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org"},"content":"Replace raw object_ref/unref calls with iothread_get/put_aio_context.\n\nSigned-off-by: Zhang Chen \n---\n hw/virtio/virtio-balloon.c | 14 +++++++++-----\n 1 file changed, 9 insertions(+), 5 deletions(-)","diff":"diff --git a/hw/virtio/virtio-balloon.c b/hw/virtio/virtio-balloon.c\nindex 4c5f486ba2..8a4494905a 100644\n--- a/hw/virtio/virtio-balloon.c\n+++ b/hw/virtio/virtio-balloon.c\n@@ -892,14 +892,16 @@ static void virtio_balloon_device_realize(DeviceState *dev, Error **errp)\n s->svq = virtio_add_queue(vdev, 128, virtio_balloon_receive_stats);\n \n if (virtio_has_feature(s->host_features, VIRTIO_BALLOON_F_FREE_PAGE_HINT)) {\n+ g_autofree char *path = object_get_canonical_path(OBJECT(s));\n+\n s->free_page_vq = virtio_add_queue(vdev, VIRTQUEUE_MAX_SIZE,\n virtio_balloon_handle_free_page_vq);\n precopy_add_notifier(&s->free_page_hint_notify);\n \n- object_ref(OBJECT(s->iothread));\n- s->free_page_bh = aio_bh_new_guarded(iothread_get_aio_context(s->iothread),\n- virtio_ballloon_get_free_page_hints, s,\n- &dev->mem_reentrancy_guard);\n+ s->free_page_bh = aio_bh_new_guarded(\n+ iothread_ref_and_get_aio_context(s->iothread, path),\n+ virtio_ballloon_get_free_page_hints, s,\n+ &dev->mem_reentrancy_guard);\n }\n \n if (virtio_has_feature(s->host_features, VIRTIO_BALLOON_F_REPORTING)) {\n@@ -919,9 +921,11 @@ static void virtio_balloon_device_unrealize(DeviceState *dev)\n \n qemu_unregister_resettable(OBJECT(dev));\n if (s->free_page_bh) {\n+ g_autofree char *path = object_get_canonical_path(OBJECT(s));\n+\n qemu_bh_delete(s->free_page_bh);\n- object_unref(OBJECT(s->iothread));\n virtio_balloon_free_page_stop(s);\n+ iothread_put_aio_context(s->iothread, path);\n precopy_remove_notifier(&s->free_page_hint_notify);\n }\n balloon_stats_destroy_timer(s);\n","prefixes":["V6","10/14"]}