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| author |   David Hildenbrand <david@redhat.com> | 2023-07-13 16:55:49 +0200 |
|---|---|---|
| committer |   Michael S. Tsirkin <mst@redhat.com> | 2023-08-10 15:51:46 -0400 |
| commit | ddf409851461f515cc32974714b73efe2e012bde (patch) | |
| tree | dc1bb654c2658ba55bbe08075b967092b59775a8 /drivers/virtio | |
| parent | virtio-mem: remove unsafe unplug in Big Block Mode (BBM) (diff) | |
| download | wireguard-linux-ddf409851461f515cc32974714b73efe2e012bde.tar.xz wireguard-linux-ddf409851461f515cc32974714b73efe2e012bde.zip | |
virtio-mem: convert most offline_and_remove_memory() errors to -EBUSY
Just like we do with alloc_contig_range(), let's convert all unknown
errors to -EBUSY, but WARN so we can look into the issue. For example,
offline_pages() could fail with -EINTR, which would be unexpected in our
case.
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20230713145551.2824980-3-david@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/virtio')
| -rw-r--r-- | drivers/virtio/virtio_mem.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/virtio/virtio_mem.c b/drivers/virtio/virtio_mem.c index ed15d2a4bd96..1a76ba2bc118 100644 --- a/drivers/virtio/virtio_mem.c +++ b/drivers/virtio/virtio_mem.c @@ -741,11 +741,15 @@ static int virtio_mem_offline_and_remove_memory(struct virtio_mem *vm, * immediately instead of waiting. */ virtio_mem_retry(vm); - } else { - dev_dbg(&vm->vdev->dev, - "offlining and removing memory failed: %d\n", rc); + return 0; } - return rc; + dev_dbg(&vm->vdev->dev, "offlining and removing memory failed: %d\n", rc); + /* + * We don't really expect this to fail, because we fake-offlined all + * memory already. But it could fail in corner cases. + */ + WARN_ON_ONCE(rc != -ENOMEM && rc != -EBUSY); + return rc == -ENOMEM ? -ENOMEM : -EBUSY; } /* |