[DLM] PATCH 2/3 dlm: lowcomms close

When a node is removed from a lockspace configuration, close our
connection to it, clearing any remaining messages for it.

Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Patrick Caulfield <pcaulfie@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c
index 09b0124f7fc4..cdd168e4bf45 100644
--- a/fs/dlm/lowcomms.c
+++ b/fs/dlm/lowcomms.c
@@ -1063,6 +1063,27 @@ static void dealloc_nodeinfo(void)
         }
 }
 
+int dlm_lowcomms_close(int nodeid)
+{
+        struct nodeinfo *ni;
+
+        ni = nodeid2nodeinfo(nodeid, 0);
+        if (!ni)
+                return -1;
+
+        spin_lock(&ni->lock);
+        if (ni->assoc_id) {
+                ni->assoc_id = 0;
+                /* Don't send shutdown here, sctp will just queue it
+                   till the node comes back up! */
+        }
+        spin_unlock(&ni->lock);
+
+        clean_one_writequeue(ni);
+        clear_bit(NI_INIT_PENDING, &ni->flags);
+        return 0;
+}
+
 static int write_list_empty(void)
 {
         int status;