1 files changed, 2 insertions, 0 deletions

diff --git a/fs/dlm/lowcomms-tcp.c b/fs/dlm/lowcomms-tcp.c
index 18b91c65bdb3..ce5e7cdfb45d 100644
--- a/fs/dlm/lowcomms-tcp.c
+++ b/fs/dlm/lowcomms-tcp.c
@@ -709,6 +709,7 @@ void *dlm_lowcomms_get_buffer(int nodeid, int len,
         if (!con)
                 return NULL;
 
+        spin_lock(&con->writequeue_lock);
         e = list_entry(con->writequeue.prev, struct writequeue_entry, list);
         if ((&e->list == &con->writequeue) ||
             (PAGE_CACHE_SIZE - e->end < len)) {
@@ -747,6 +748,7 @@ void dlm_lowcomms_commit_buffer(void *mh)
         struct connection *con = e->con;
         int users;
 
+        spin_lock(&con->writequeue_lock);
         users = --e->users;
         if (users)
                 goto out;