linux-kernel - Re: [PATCH 3/4] mm/hwpoison: remove MF_MSG_BUDDY_2ND and MF_MSG_POISONED

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Date:   Tue, 26 Oct 2021 18:05:58 -0700
From:   Yang Shi <shy828301@...il.com>
To:     Naoya Horiguchi <nao.horiguchi@...il.com>
Cc:     Linux MM <linux-mm@...ck.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        David Hildenbrand <david@...hat.com>,
        Oscar Salvador <osalvador@...e.de>,
        Michal Hocko <mhocko@...e.com>,
        Ding Hui <dinghui@...gfor.com.cn>,
        Tony Luck <tony.luck@...el.com>,
        "Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>,
        Miaohe Lin <linmiaohe@...wei.com>,
        Peter Xu <peterx@...hat.com>,
        Naoya Horiguchi <naoya.horiguchi@....com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/4] mm/hwpoison: remove MF_MSG_BUDDY_2ND and MF_MSG_POISONED_HUGE

On Mon, Oct 25, 2021 at 4:14 PM Naoya Horiguchi <nao.horiguchi@...il.com> wrote:
>
> (I failed to send patch 3/4 and 4/4 due to the ratelimit of linux.dev,
> so I switched mail server...)
>
> From: Naoya Horiguchi <naoya.horiguchi@....com>
>
> These action_page_types are no longer used, so remove them.
>
> Signed-off-by: Naoya Horiguchi <naoya.horiguchi@....com>

Acked-by: Yang Shi <shy828301@...il.com>

> ---
>  include/linux/mm.h      | 2 --
>  include/ras/ras_event.h | 2 --
>  mm/memory-failure.c     | 2 --
>  3 files changed, 6 deletions(-)
>
> diff --git a/include/linux/mm.h b/include/linux/mm.h
> index a3229f609856..71d886470d71 100644
> --- a/include/linux/mm.h
> +++ b/include/linux/mm.h
> @@ -3246,7 +3246,6 @@ enum mf_action_page_type {
>         MF_MSG_KERNEL_HIGH_ORDER,
>         MF_MSG_SLAB,
>         MF_MSG_DIFFERENT_COMPOUND,
> -       MF_MSG_POISONED_HUGE,
>         MF_MSG_HUGE,
>         MF_MSG_FREE_HUGE,
>         MF_MSG_NON_PMD_HUGE,
> @@ -3261,7 +3260,6 @@ enum mf_action_page_type {
>         MF_MSG_CLEAN_LRU,
>         MF_MSG_TRUNCATED_LRU,
>         MF_MSG_BUDDY,
> -       MF_MSG_BUDDY_2ND,
>         MF_MSG_DAX,
>         MF_MSG_UNSPLIT_THP,
>         MF_MSG_UNKNOWN,
> diff --git a/include/ras/ras_event.h b/include/ras/ras_event.h
> index 0bdbc0d17d2f..d0337a41141c 100644
> --- a/include/ras/ras_event.h
> +++ b/include/ras/ras_event.h
> @@ -358,7 +358,6 @@ TRACE_EVENT(aer_event,
>         EM ( MF_MSG_KERNEL_HIGH_ORDER, "high-order kernel page" )       \
>         EM ( MF_MSG_SLAB, "kernel slab page" )                          \
>         EM ( MF_MSG_DIFFERENT_COMPOUND, "different compound page after locking" ) \
> -       EM ( MF_MSG_POISONED_HUGE, "huge page already hardware poisoned" )      \
>         EM ( MF_MSG_HUGE, "huge page" )                                 \
>         EM ( MF_MSG_FREE_HUGE, "free huge page" )                       \
>         EM ( MF_MSG_NON_PMD_HUGE, "non-pmd-sized huge page" )           \
> @@ -373,7 +372,6 @@ TRACE_EVENT(aer_event,
>         EM ( MF_MSG_CLEAN_LRU, "clean LRU page" )                       \
>         EM ( MF_MSG_TRUNCATED_LRU, "already truncated LRU page" )       \
>         EM ( MF_MSG_BUDDY, "free buddy page" )                          \
> -       EM ( MF_MSG_BUDDY_2ND, "free buddy page (2nd try)" )            \
>         EM ( MF_MSG_DAX, "dax page" )                                   \
>         EM ( MF_MSG_UNSPLIT_THP, "unsplit thp" )                        \
>         EMe ( MF_MSG_UNKNOWN, "unknown page" )
> diff --git a/mm/memory-failure.c b/mm/memory-failure.c
> index a47b741ca04b..09f079987928 100644
> --- a/mm/memory-failure.c
> +++ b/mm/memory-failure.c
> @@ -723,7 +723,6 @@ static const char * const action_page_types[] = {
>         [MF_MSG_KERNEL_HIGH_ORDER]      = "high-order kernel page",
>         [MF_MSG_SLAB]                   = "kernel slab page",
>         [MF_MSG_DIFFERENT_COMPOUND]     = "different compound page after locking",
> -       [MF_MSG_POISONED_HUGE]          = "huge page already hardware poisoned",
>         [MF_MSG_HUGE]                   = "huge page",
>         [MF_MSG_FREE_HUGE]              = "free huge page",
>         [MF_MSG_NON_PMD_HUGE]           = "non-pmd-sized huge page",
> @@ -738,7 +737,6 @@ static const char * const action_page_types[] = {
>         [MF_MSG_CLEAN_LRU]              = "clean LRU page",
>         [MF_MSG_TRUNCATED_LRU]          = "already truncated LRU page",
>         [MF_MSG_BUDDY]                  = "free buddy page",
> -       [MF_MSG_BUDDY_2ND]              = "free buddy page (2nd try)",
>         [MF_MSG_DAX]                    = "dax page",
>         [MF_MSG_UNSPLIT_THP]            = "unsplit thp",
>         [MF_MSG_UNKNOWN]                = "unknown page",
> --
> 2.25.1
>
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> From: Naoya Horiguchi <nao.horiguchi@...il.com>
> To:
> Cc:
> Bcc: nao.horiguchi@...il.com
> Subject:
> Reply-To:
>