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Date: Tue, 31 Aug 2021 11:32:01 +0300
From: Mike Rapoport <rppt@...nel.org>
To: Rick Edgecombe <rick.p.edgecombe@...el.com>
Cc: dave.hansen@...el.com, luto@...nel.org, peterz@...radead.org,
x86@...nel.org, akpm@...ux-foundation.org, keescook@...omium.org,
shakeelb@...gle.com, vbabka@...e.cz, linux-mm@...ck.org,
linux-hardening@...r.kernel.org,
kernel-hardening@...ts.openwall.com, ira.weiny@...el.com,
dan.j.williams@...el.com, linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH v2 09/19] x86/mm: Support GFP_ATOMIC in
alloc_table_node()
On Mon, Aug 30, 2021 at 04:59:17PM -0700, Rick Edgecombe wrote:
> For GFP_ATOMIC in alloc_table/_node(), use get_grouped_page_atomic().
I think the patch that adds get_grouped_page_atomic() and this one can be
merged.
> Signed-off-by: Rick Edgecombe <rick.p.edgecombe@...el.com>
> ---
> arch/x86/mm/pgtable.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c
> index ef0b4ce95522..e65d69ad6e0c 100644
> --- a/arch/x86/mm/pgtable.c
> +++ b/arch/x86/mm/pgtable.c
> @@ -52,7 +52,10 @@ struct page *alloc_table(gfp_t gfp)
> return table;
> }
>
> - table = get_grouped_page(numa_node_id(), &gpc_pks);
> + if (gfp & GFP_ATOMIC)
> + table = get_grouped_page_atomic(numa_node_id(), &gpc_pks);
> + else
> + table = get_grouped_page(numa_node_id(), &gpc_pks);
> if (!table)
> return NULL;
> __SetPageTable(table);
> --
> 2.17.1
>
--
Sincerely yours,
Mike.
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