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 v4 1/3] virtio-balloon: remove BUG() in init_vqs Date: Thu, 16 Aug 2018 15:50:56 +0800 [thread overview] Message-ID: <1534405858-27085-2-git-send-email-wei.w.wang@intel.com> (raw) In-Reply-To: <1534405858-27085-1-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
WARNING: multiple messages have this Message-ID (diff)
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: [virtio-dev] [PATCH v4 1/3] virtio-balloon: remove BUG() in init_vqs Date: Thu, 16 Aug 2018 15:50:56 +0800 [thread overview] Message-ID: <1534405858-27085-2-git-send-email-wei.w.wang@intel.com> (raw) In-Reply-To: <1534405858-27085-1-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 --------------------------------------------------------------------- To unsubscribe, e-mail: virtio-dev-unsubscribe@lists.oasis-open.org For additional commands, e-mail: virtio-dev-help@lists.oasis-open.org
next prev parent reply other threads:[~2018-08-16 8:19 UTC|newest] Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top 2018-08-16 7:50 [PATCH v4 0/3] virtio-balloon: some improvements Wei Wang 2018-08-16 7:50 ` [virtio-dev] " Wei Wang 2018-08-16 7:50 ` Wei Wang 2018-08-16 7:50 ` [PATCH v4 1/3] virtio-balloon: remove BUG() in init_vqs Wei Wang 2018-08-16 7:50 ` Wei Wang [this message] 2018-08-16 7:50 ` [virtio-dev] " Wei Wang 2018-08-16 7:50 ` [PATCH v4 2/3] virtio-balloon: kzalloc the vb struct Wei Wang 2018-08-16 7:50 ` Wei Wang 2018-08-16 7:50 ` [virtio-dev] " Wei Wang 2018-08-16 7:50 ` [PATCH v4 3/3] virtio_balloon: replace oom notifier with shrinker Wei Wang 2018-08-16 7:50 ` [virtio-dev] " Wei Wang 2018-08-16 7:50 ` Wei Wang
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