From: Aharon Landau Date: Mon, 4 Apr 2022 08:58:04 +0000 (+0300) Subject: RDMA/mlx5: Add a missing update of cache->last_add X-Git-Tag: v5.18-rc2~17^2~3 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=1d735eeee63a0beb65180ca0224f239cc0c9f804;p=thirdparty%2Fkernel%2Flinux.git RDMA/mlx5: Add a missing update of cache->last_add 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 --- diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c index 45b0680377ec6..32ef67e9a6a72 100644 --- a/drivers/infiniband/hw/mlx5/mr.c +++ b/drivers/infiniband/hw/mlx5/mr.c @@ -627,6 +627,7 @@ 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++;