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[RFC,v2,09/19] x86/mm: Support GFP_ATOMIC in alloc_table_node()

Message ID 20210830235927.6443-10-rick.p.edgecombe@intel.com (mailing list archive)
State New, archived
Headers show
Series PKS write protected page tables | expand

Commit Message

Edgecombe, Rick P Aug. 30, 2021, 11:59 p.m. UTC
For GFP_ATOMIC in alloc_table/_node(), use get_grouped_page_atomic().

Signed-off-by: Rick Edgecombe <rick.p.edgecombe@intel.com>
---
 arch/x86/mm/pgtable.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

Comments

Mike Rapoport Aug. 31, 2021, 8:32 a.m. UTC | #1
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@intel.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
>
diff mbox series

Patch

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);