blocklayoutdriver: Fix reference leak of pnfs_device_node

[ Upstream commit 1530827b90025cdf80c9b0d07a166d045a0a7b81 ]

The error path for blocklayout's device lookup is missing a reference drop
for the case where a lookup finds the device, but the device is marked with
NFS_DEVICEID_UNAVAILABLE.

Fixes: b3dce6a2f060 ("pnfs/blocklayout: handle transient devices")
Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/fs/nfs/blocklayout/blocklayout.c b/fs/nfs/blocklayout/blocklayout.c
index 943aeea..1d1d7ab 100644 (file)
--- a/fs/nfs/blocklayout/blocklayout.c
+++ b/fs/nfs/blocklayout/blocklayout.c
@@ -580,6 +580,8 @@ retry:
                nfs4_delete_deviceid(node->ld, node->nfs_client, id);
                goto retry;
        }
+
+       nfs4_put_deviceid_node(node);
        return ERR_PTR(-ENODEV);
 }