From: Halil Pasic pasic@linux.ibm.com
[ Upstream commit 3d973b2e9a625996ee997c7303cd793b9d197c65 ]
Let's change the mapping between virtqueue_add errors to BLK_STS statuses, so that -ENOSPC, which indicates virtqueue full is still mapped to BLK_STS_DEV_RESOURCE, but -ENOMEM which indicates non-device specific resource outage is mapped to BLK_STS_RESOURCE.
Signed-off-by: Halil Pasic pasic@linux.ibm.com Link: https://lore.kernel.org/r/20200213123728.61216-3-pasic@linux.ibm.com Signed-off-by: Michael S. Tsirkin mst@redhat.com Reviewed-by: Stefan Hajnoczi stefanha@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/block/virtio_blk.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c index 728c9a9609f0c..9a3c2b14ac378 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -277,9 +277,14 @@ static blk_status_t virtio_queue_rq(struct blk_mq_hw_ctx *hctx, if (err == -ENOSPC) blk_mq_stop_hw_queue(hctx); spin_unlock_irqrestore(&vblk->vqs[qid].lock, flags); - if (err == -ENOMEM || err == -ENOSPC) + switch (err) { + case -ENOSPC: return BLK_STS_DEV_RESOURCE; - return BLK_STS_IOERR; + case -ENOMEM: + return BLK_STS_RESOURCE; + default: + return BLK_STS_IOERR; + } }
if (bd->last && virtqueue_kick_prepare(vblk->vqs[qid].vq))