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Message-ID: <95fb8698-2fdc-4b4d-a48e-5fb33c75162d@redhat.com>
Date: Tue, 20 Feb 2024 09:48:08 +0100
From: David Hildenbrand <david@...hat.com>
To: Zi Yan <ziy@...dia.com>, linux-mm@...ck.org, linux-kernel@...r.kernel.org
Cc: "Huang, Ying" <ying.huang@...el.com>, Ryan Roberts
<ryan.roberts@....com>, Andrew Morton <akpm@...ux-foundation.org>,
"Matthew Wilcox (Oracle)" <willy@...radead.org>,
"Yin, Fengwei" <fengwei.yin@...el.com>, Yu Zhao <yuzhao@...gle.com>,
Vlastimil Babka <vbabka@...e.cz>,
"Kirill A . Shutemov" <kirill.shutemov@...ux.intel.com>,
Johannes Weiner <hannes@...xchg.org>,
Baolin Wang <baolin.wang@...ux.alibaba.com>,
Kemeng Shi <shikemeng@...weicloud.com>,
Mel Gorman <mgorman@...hsingularity.net>, Rohan Puri
<rohan.puri15@...il.com>, Mcgrof Chamberlain <mcgrof@...nel.org>,
Adam Manzanares <a.manzanares@...sung.com>,
"Vishal Moola (Oracle)" <vishal.moola@...il.com>
Subject: Re: [PATCH v6 1/4] mm/page_alloc: remove unused fpi_flags in
free_pages_prepare()
On 16.02.24 18:04, Zi Yan wrote:
> From: Zi Yan <ziy@...dia.com>
>
> fpi_flags is only passed to should_skip_kasan_poison() but ignored
> by the function. Remove the unused parameter.
>
> Signed-off-by: Zi Yan <ziy@...dia.com>
> ---
> mm/page_alloc.c | 10 +++++-----
> 1 file changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> index 7ae4b74c9e5c..70c1ed3addf3 100644
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -1061,7 +1061,7 @@ static int free_tail_page_prepare(struct page *head_page, struct page *page)
> * on-demand allocation and then freed again before the deferred pages
> * initialization is done, but this is not likely to happen.
> */
> -static inline bool should_skip_kasan_poison(struct page *page, fpi_t fpi_flags)
> +static inline bool should_skip_kasan_poison(struct page *page)
> {
> if (IS_ENABLED(CONFIG_KASAN_GENERIC))
> return deferred_pages_enabled();
> @@ -1081,10 +1081,10 @@ static void kernel_init_pages(struct page *page, int numpages)
> }
>
> static __always_inline bool free_pages_prepare(struct page *page,
> - unsigned int order, fpi_t fpi_flags)
> + unsigned int order)
> {
> int bad = 0;
> - bool skip_kasan_poison = should_skip_kasan_poison(page, fpi_flags);
> + bool skip_kasan_poison = should_skip_kasan_poison(page);
> bool init = want_init_on_free();
> bool compound = PageCompound(page);
>
> @@ -1266,7 +1266,7 @@ static void __free_pages_ok(struct page *page, unsigned int order,
> unsigned long pfn = page_to_pfn(page);
> struct zone *zone = page_zone(page);
>
> - if (!free_pages_prepare(page, order, fpi_flags))
> + if (!free_pages_prepare(page, order))
> return;
>
> /*
> @@ -2379,7 +2379,7 @@ static bool free_unref_page_prepare(struct page *page, unsigned long pfn,
> {
> int migratetype;
>
> - if (!free_pages_prepare(page, order, FPI_NONE))
> + if (!free_pages_prepare(page, order))
> return false;
>
> migratetype = get_pfnblock_migratetype(page, pfn);
Likely due to
commit 0a54864f8dfb64b64c84c9db6ff70e0e93690a33
Author: Peter Collingbourne <pcc@...gle.com>
Date: Thu Mar 9 20:29:14 2023 -0800
kasan: remove PG_skip_kasan_poison flag
That removed the usage of fpi_flags in should_skip_kasan_poison.
Reviewed-by: David Hildenbrand <david@...hat.com>
--
Cheers,
David / dhildenb
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