net: rds: exchange of 8K and 1M pool

[linux-2.6-block.git] / net / rds / ib_fmr.c

diff --git a/net/rds/ib_fmr.c b/net/rds/ib_fmr.c
index 31cf37da4510c3b53377ea40d4880638a89775e5..93c0437e6a5fd284b3e6dd1283e31839a305be7b 100644 (file)
--- a/net/rds/ib_fmr.c
+++ b/net/rds/ib_fmr.c
@@ -44,6 +44,17 @@ struct rds_ib_mr *rds_ib_alloc_fmr(struct rds_ib_device *rds_ibdev, int npages)
        else
                pool = rds_ibdev->mr_1m_pool;
 
+       if (atomic_read(&pool->dirty_count) >= pool->max_items / 10)
+               queue_delayed_work(rds_ib_mr_wq, &pool->flush_worker, 10);
+
+       /* Switch pools if one of the pool is reaching upper limit */
+       if (atomic_read(&pool->dirty_count) >=  pool->max_items * 9 / 10) {
+               if (pool->pool_type == RDS_IB_MR_8K_POOL)
+                       pool = rds_ibdev->mr_1m_pool;
+               else
+                       pool = rds_ibdev->mr_8k_pool;
+       }
+
        ibmr = rds_ib_try_reuse_ibmr(pool);
        if (ibmr)
                return ibmr;