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| author | David S. Miller <davem@davemloft.net> | 2017-09-01 17:42:05 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-09-01 17:42:05 -0700 |
| commit | 6026e043d09012c6269f9a96a808d52d9c498224 (patch) | |
| tree | a80578915557db98596821ff60d2ff37dafffb4f /drivers/block/xen-blkback/xenbus.c | |
| parent | 4cc5b44b29a9de9b3f841efedaa3f769066c63cc (diff) | |
| parent | 138e4ad67afd5c6c318b056b4d17c17f2c0ca5c0 (diff) | |
| download | linux-6026e043d09012c6269f9a96a808d52d9c498224.tar.gz | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Three cases of simple overlapping changes.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/block/xen-blkback/xenbus.c')
| -rw-r--r-- | drivers/block/xen-blkback/xenbus.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/block/xen-blkback/xenbus.c b/drivers/block/xen-blkback/xenbus.c index 792da683e70d..2adb8599be93 100644 --- a/drivers/block/xen-blkback/xenbus.c +++ b/drivers/block/xen-blkback/xenbus.c @@ -244,6 +244,7 @@ static int xen_blkif_disconnect(struct xen_blkif *blkif) { struct pending_req *req, *n; unsigned int j, r; + bool busy = false; for (r = 0; r < blkif->nr_rings; r++) { struct xen_blkif_ring *ring = &blkif->rings[r]; @@ -261,8 +262,10 @@ static int xen_blkif_disconnect(struct xen_blkif *blkif) * don't have any discard_io or other_io requests. So, checking * for inflight IO is enough. */ - if (atomic_read(&ring->inflight) > 0) - return -EBUSY; + if (atomic_read(&ring->inflight) > 0) { + busy = true; + continue; + } if (ring->irq) { unbind_from_irqhandler(ring->irq, ring); @@ -300,6 +303,9 @@ static int xen_blkif_disconnect(struct xen_blkif *blkif) WARN_ON(i != (XEN_BLKIF_REQS_PER_PAGE * blkif->nr_ring_pages)); ring->active = false; } + if (busy) + return -EBUSY; + blkif->nr_ring_pages = 0; /* * blkif->rings was allocated in connect_ring, so we should free it in |