From 34b8ba1cb3372dad71557f963e777d4d03f2d3bd Mon Sep 17 00:00:00 2001 From: Aharon Landau Date: Mon, 4 Apr 2022 11:58:04 +0300 Subject: [PATCH] RDMA/mlx5: Add a missing update of cache->last_add [ Upstream commit 1d735eeee63a0beb65180ca0224f239cc0c9f804 ] 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") Link: https://lore.kernel.org/r/c99f076fce4b44829d434936bbcd3b5fc4c95020.1649062436.git.leonro@nvidia.com Signed-off-by: Aharon Landau Reviewed-by: Shay Drory Signed-off-by: Leon Romanovsky Signed-off-by: Jason Gunthorpe Signed-off-by: Sasha Levin --- drivers/infiniband/hw/mlx5/mr.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c index 85289fd..cf203f8 100644 --- a/drivers/infiniband/hw/mlx5/mr.c +++ b/drivers/infiniband/hw/mlx5/mr.c @@ -635,6 +635,7 @@ 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++; -- 2.7.4