rds: don't let RDS shutdown a connection while senders are present

This is the first in a long line of patches that tries to fix races
between RDS connection shutdown and RDS traffic.

Here we are maintaining a count of active senders to make sure
the connection doesn't go away while they are using it.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 0 insertions, 12 deletions

diff --git a/net/rds/ib_recv.c b/net/rds/ib_recv.c
index 8f041f7954a2..24d14615f41a 100644
--- a/net/rds/ib_recv.c
+++ b/net/rds/ib_recv.c
@@ -863,18 +863,6 @@ int rds_ib_recv(struct rds_connection *conn)
         int ret = 0;
 
         rdsdebug("conn %p\n", conn);
-
-        /*
-         * If we get a temporary posting failure in this context then
-         * we're really low and we want the caller to back off for a bit.
-         */
-        mutex_lock(&ic->i_recv_mutex);
-        if (rds_ib_recv_refill(conn, 0))
-                ret = -ENOMEM;
-        else
-                rds_ib_stats_inc(s_ib_rx_refill_from_thread);
-        mutex_unlock(&ic->i_recv_mutex);
-
         if (rds_conn_up(conn))
                 rds_ib_attempt_ack(ic);