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-rw-r--r--fs/dlm/lowcomms-tcp.c2
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;