DLM: Replace nodeid_to_addr with kernel_getpeername

This patch replaces the call to nodeid_to_addr with a call to
kernel_getpeername. This avoids taking a spinlock because it may
potentially be called from a softirq context.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c
index 3a37bd3f9637..dc9ae6d670dc 100644
--- a/fs/dlm/lowcomms.c
+++ b/fs/dlm/lowcomms.c
@@ -469,8 +469,10 @@ static void lowcomms_error_report(struct sock *sk)
 {
         struct connection *con = sock2con(sk);
         struct sockaddr_storage saddr;
+        int buflen;
 
-        if (nodeid_to_addr(con->nodeid, &saddr, NULL, false)) {
+        if (con->sock == NULL ||
+            kernel_getpeername(con->sock, (struct sockaddr *)&saddr, &buflen)) {
                 printk_ratelimited(KERN_ERR "dlm: node %d: socket error "
                                    "sending to node %d, port %d, "
                                    "sk_err=%d/%d\n", dlm_our_nodeid(),