RDS: Fix locking in send on m_rs_lock
Do not nest m_rs_lock under c_lock
Disable interrupts in {rdma,atomic}_send_complete
Signed-off-by: Andy Grover <andy.grover@oracle.com>
diff --git a/net/rds/send.c b/net/rds/send.c
index 15b715a..ecda3e6 100644
--- a/net/rds/send.c
+++ b/net/rds/send.c
@@ -468,8 +468,9 @@
struct rds_sock *rs = NULL;
struct rm_atomic_op *ao;
struct rds_notifier *notifier;
+ unsigned long flags;
- spin_lock(&rm->m_rs_lock);
+ spin_lock_irqsave(&rm->m_rs_lock, flags);
ao = &rm->atomic;
if (test_bit(RDS_MSG_ON_SOCK, &rm->m_flags)
@@ -486,7 +487,7 @@
ao->op_notifier = NULL;
}
- spin_unlock(&rm->m_rs_lock);
+ spin_unlock_irqrestore(&rm->m_rs_lock, flags);
if (rs) {
rds_wake_sk_sleep(rs);