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: v5.16.20~106 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=59c3e9576fb6254ef475207cbe5a6cb866e7d16d;p=thirdparty%2Fkernel%2Fstable.git 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 --- diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c index d3b2d02a48723..d40a1460ef971 100644 --- a/drivers/infiniband/hw/mlx5/mr.c +++ b/drivers/infiniband/hw/mlx5/mr.c @@ -632,6 +632,7 @@ 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++;