From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4355DC4167D for ; Tue, 12 Apr 2022 07:07:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349753AbiDLHJO (ORCPT ); Tue, 12 Apr 2022 03:09:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44780 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1353034AbiDLHGw (ORCPT ); Tue, 12 Apr 2022 03:06:52 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DC88F49915; Mon, 11 Apr 2022 23:49:07 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 27E4561464; Tue, 12 Apr 2022 06:49:07 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 351BDC385A1; Tue, 12 Apr 2022 06:49:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1649746146; bh=e3NcP0WQTUBNTnL50EsGpQnLN+HIvQDqCEHRACb0Kgs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cBs62zUY6SIGBiF4+BuBouu0RzxCGaWB4t4xM6KF+4GOeVjazHHHowxFN0Qy5dqfY IXbLeOiloddBWsi2FdHAsRh7znVt5Oz4L12sY+opQxQtMP2890ZS+QkHuEeKjOp4dZ iZUUAhEhzVBxP2reAj/Z0fEsg+kYV7SquKoVBvms= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Aharon Landau , Shay Drory , Leon Romanovsky , Jason Gunthorpe , Sasha Levin Subject: [PATCH 5.15 176/277] RDMA/mlx5: Add a missing update of cache->last_add Date: Tue, 12 Apr 2022 08:29:39 +0200 Message-Id: <20220412062947.130685580@linuxfoundation.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220412062942.022903016@linuxfoundation.org> References: <20220412062942.022903016@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Aharon Landau [ 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 85289fddc2ae..cf203f879d34 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++; -- 2.35.1