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[rdma-rc,2/3] RDMA/mlx5: Add a missing update of cache->last_add

Message ID ba629c8461261ca0e6430ec01dcdcbf50bc6f7b6.1648366974.git.leonro@nvidia.com (mailing list archive)
State Superseded
Headers show
Series Fixes for v5.17 | expand

Commit Message

Leon Romanovsky March 27, 2022, 7:55 a.m. UTC 
From: Aharon Landau <aharonl@nvidia.com>

Update cache->last_add when returning an MR to the cache so that the
cache work won't remove it.

Fixes: b9358bdbc713 ("RDMA/mlx5: Fix locking in MR cache work queue")
Signed-off-by: Aharon Landau <aharonl@nvidia.com>
Reviewed-by: Shay Drory <shayd@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
---
 drivers/infiniband/hw/mlx5/mr.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c
index 4a01a0ad7c90..1eef74b952b6 100644
--- a/drivers/infiniband/hw/mlx5/mr.c
+++ b/drivers/infiniband/hw/mlx5/mr.c
@@ -614,6 +614,7 @@  static void mlx5_mr_cache_free(struct mlx5_ib_dev *dev, struct mlx5_ib_mr *mr)
 {
 	struct mlx5_cache_ent *ent = mr->cache_ent;
 
+	WRITE_ONCE(dev->cache.last_add, jiffies);
 	spin_lock_irq(&ent->lock);
 	list_add_tail(&mr->list, &ent->head);
 	ent->available_mrs++;