From: Wei Wang <wei.w.wang@intel.com>
To: virtio-dev@lists.oasis-open.org, linux-kernel@vger.kernel.org,
virtualization@lists.linux-foundation.org, linux-mm@kvack.org,
mst@redhat.com, mhocko@kernel.org, akpm@linux-foundation.org,
penguin-kernel@I-love.SAKURA.ne.jp
Cc: wei.w.wang@intel.com
Subject: [PATCH v3 1/2] virtio-balloon: remove BUG() in init_vqs
Date: Fri, 3 Aug 2018 16:32:25 +0800 [thread overview]
Message-ID: <1533285146-25212-2-git-send-email-wei.w.wang@intel.com> (raw)
In-Reply-To: <1533285146-25212-1-git-send-email-wei.w.wang@intel.com>
It's a bit overkill to use BUG when failing to add an entry to the
stats_vq in init_vqs. So remove it and just return the error to the
caller to bail out nicely.
Signed-off-by: Wei Wang <wei.w.wang@intel.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
---
drivers/virtio/virtio_balloon.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c
index 3988c09..8100e77 100644
--- a/drivers/virtio/virtio_balloon.c
+++ b/drivers/virtio/virtio_balloon.c
@@ -455,9 +455,13 @@ static int init_vqs(struct virtio_balloon *vb)
num_stats = update_balloon_stats(vb);
sg_init_one(&sg, vb->stats, sizeof(vb->stats[0]) * num_stats);
- if (virtqueue_add_outbuf(vb->stats_vq, &sg, 1, vb, GFP_KERNEL)
- < 0)
- BUG();
+ err = virtqueue_add_outbuf(vb->stats_vq, &sg, 1, vb,
+ GFP_KERNEL);
+ if (err) {
+ dev_warn(&vb->vdev->dev, "%s: add stat_vq failed\n",
+ __func__);
+ return err;
+ }
virtqueue_kick(vb->stats_vq);
}
return 0;
--
2.7.4
next prev parent reply other threads:[~2018-08-03 9:00 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-03 8:32 [PATCH v3 0/2] virtio-balloon: some improvements Wei Wang
2018-08-03 8:32 ` Wei Wang [this message]
2018-08-03 8:32 ` [PATCH v3 2/2] virtio_balloon: replace oom notifier with shrinker Wei Wang
2018-08-03 12:11 ` Tetsuo Handa
2018-08-06 9:56 ` Wei Wang
2018-08-06 10:29 ` Tetsuo Handa
2018-08-06 12:44 ` Wang, Wei W
2018-08-06 13:28 ` Tetsuo Handa
2018-08-06 14:02 ` Wang, Wei W
2018-08-03 19:15 ` Michael S. Tsirkin
2018-08-06 3:29 ` Wei Wang
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