RDS: add a sock_destruct callback with debugging

Signed-off-by: Chris Mason <chris.mason@oracle.com>
Signed-off-by: Bang Nguyen <bang.nguyen@oracle.com>

diff --git a/net/rds/ib_ring.c b/net/rds/ib_ring.c
index 99a6ccae964cbd0e4fd5eccbaa9c38665be26f19..a24458da957ee7a5fb56611780ea9205a2103c83 100644 (file)
--- a/net/rds/ib_ring.c
+++ b/net/rds/ib_ring.c
@@ -118,6 +118,7 @@ void rds_ib_ring_free(struct rds_ib_work_ring *ring, u32 val)
 {
        ring->w_free_ptr = (ring->w_free_ptr + val) % ring->w_nr;
        atomic_add(val, &ring->w_free_ctr);
+       smp_mb();
 
        if (__rds_ib_ring_empty(ring) &&
            waitqueue_active(&rds_ib_ring_empty_wait))