linux-kernel - Re: [PATCH v2 net-next 3/4] net: introduce common dev_page_is

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Date:   Wed, 27 Jan 2021 13:47:26 -0800
From:   Jesse Brandeburg <jesse.brandeburg@...el.com>
To:     Alexander Lobakin <alobakin@...me>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        David Rientjes <rientjes@...gle.com>,
        Yisen Zhuang <yisen.zhuang@...wei.com>,
        Salil Mehta <salil.mehta@...wei.com>,
        Tony Nguyen <anthony.l.nguyen@...el.com>,
        Saeed Mahameed <saeedm@...dia.com>,
        Leon Romanovsky <leon@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Jesper Dangaard Brouer <brouer@...hat.com>,
        Ilias Apalodimas <ilias.apalodimas@...aro.org>,
        Jonathan Lemon <jonathan.lemon@...il.com>,
        Willem de Bruijn <willemb@...gle.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        Pablo Neira Ayuso <pablo@...filter.org>,
        Dexuan Cui <decui@...rosoft.com>,
        Jakub Sitnicki <jakub@...udflare.com>,
        Marco Elver <elver@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, intel-wired-lan@...ts.osuosl.org,
        linux-rdma@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH v2 net-next 3/4] net: introduce common
 dev_page_is_reserved()

Alexander Lobakin wrote:

> A bunch of drivers test the page before reusing/recycling for two
> common conditions:
>  - if a page was allocated under memory pressure (pfmemalloc page);
>  - if a page was allocated at a distant memory node (to exclude
>    slowdowns).
> 
> Introduce and use a new common function for doing this and eliminate
> all functions-duplicates from drivers.
> 
> Suggested-by: David Rientjes <rientjes@...gle.com>
> Signed-off-by: Alexander Lobakin <alobakin@...me>
> ---
>  drivers/net/ethernet/hisilicon/hns3/hns3_enet.c   | 10 ++--------
>  drivers/net/ethernet/intel/fm10k/fm10k_main.c     |  9 ++-------
>  drivers/net/ethernet/intel/i40e/i40e_txrx.c       | 15 +--------------
>  drivers/net/ethernet/intel/iavf/iavf_txrx.c       | 15 +--------------
>  drivers/net/ethernet/intel/ice/ice_txrx.c         | 11 +----------
>  drivers/net/ethernet/intel/igb/igb_main.c         |  7 +------
>  drivers/net/ethernet/intel/igc/igc_main.c         |  7 +------
>  drivers/net/ethernet/intel/ixgbe/ixgbe_main.c     |  7 +------
>  drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c |  7 +------
>  drivers/net/ethernet/mellanox/mlx5/core/en_rx.c   |  7 +------
>  include/linux/skbuff.h                            | 15 +++++++++++++++
>  11 files changed, 27 insertions(+), 83 deletions(-)

For the patch, and esp. for the Intel drivers:
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@...el.com>