linux-kernel - Re: [PATCH v3 5/7] hugetlb: have CONFIG_HUGETLBFS select CONFIG

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Date: Thu, 11 Jan 2024 14:49:14 -0800
From: Tim Chen <tim.c.chen@...ux.intel.com>
To: Gang Li <gang.li@...ux.dev>, David Hildenbrand <david@...hat.com>, David
 Rientjes <rientjes@...gle.com>, Mike Kravetz <mike.kravetz@...cle.com>,
 Muchun Song <muchun.song@...ux.dev>, Andrew Morton
 <akpm@...ux-foundation.org>
Cc: linux-mm@...ck.org, linux-kernel@...r.kernel.org,
 ligang.bdlg@...edance.com
Subject: Re: [PATCH v3 5/7] hugetlb: have CONFIG_HUGETLBFS select
 CONFIG_PADATA

On Tue, 2024-01-02 at 21:12 +0800, Gang Li wrote:
> Now hugetlb uses padata_do_multithreaded for parallel initialization,
> so select CONFIG_PADATA.

Perhaps rephrase

Allow hugetlb use padata_do_multithreaded for parallel initialization.
Select CONFIG_PADATA in this case.

> 
> Signed-off-by: Gang Li <gang.li@...ux.dev>
> ---
>  fs/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/fs/Kconfig b/fs/Kconfig
> index 89fdbefd1075f..a57d6e6c41e6f 100644
> --- a/fs/Kconfig
> +++ b/fs/Kconfig
> @@ -262,6 +262,7 @@ menuconfig HUGETLBFS
>  	depends on X86 || SPARC64 || ARCH_SUPPORTS_HUGETLBFS || BROKEN
>  	depends on (SYSFS || SYSCTL)
>  	select MEMFD_CREATE
> +	select PADATA
>  	help
>  	  hugetlbfs is a filesystem backing for HugeTLB pages, based on
>  	  ramfs. For architectures that support it, say Y here and read