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Commit cf4b7389 authored by Andy Grover's avatar Andy Grover
Browse files

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: default avatarAndy Grover <andy.grover@oracle.com>
parent f2ec76f2

net/rds/send.c

+3 −2
Original line number Diff line number Diff line
@@ -468,8 +468,9 @@ void rds_atomic_send_complete(struct rds_message *rm, int status) 
	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 @@ void rds_atomic_send_complete(struct rds_message *rm, int status) 
		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);