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 <pa...@linux.ibm.com>
---
See comment about BLK_STS_DEV_RESOURCE in include/linux/blk_types.h
---
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 adfe43f5ffe4..0736248999b0 100644
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -251,9 +251,14 @@ 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))
--
2.17.1
_______________________________________________
Virtualization mailing list
Virtualization@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/virtualization
