linux-kernel - Re: [PATCH v2 08/14] mm: call {ptlock,pgtable}_cache_init() directly from mm_core

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <801211fd-558c-a07d-e84a-aa7f997d8c92@suse.cz>
Date:   Wed, 22 Mar 2023 17:27:02 +0100
From:   Vlastimil Babka <vbabka@...e.cz>
To:     Mike Rapoport <rppt@...nel.org>,
        Sergei Shtylyov <sergei.shtylyov@...il.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        David Hildenbrand <david@...hat.com>,
        Doug Berger <opendmb@...il.com>,
        Matthew Wilcox <willy@...radead.org>,
        Mel Gorman <mgorman@...e.de>, Michal Hocko <mhocko@...nel.org>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        linux-kernel@...r.kernel.org, linux-mips@...r.kernel.org,
        linux-mm@...ck.org
Subject: Re: [PATCH v2 08/14] mm: call {ptlock,pgtable}_cache_init() directly
 from mm_core_init()

On 3/22/23 11:08, Mike Rapoport wrote:
> On Wed, Mar 22, 2023 at 12:06:18PM +0300, Sergei Shtylyov wrote:
>> On 3/21/23 8:05 PM, Mike Rapoport wrote:
>> 
>> > From: "Mike Rapoport (IBM)" <rppt@...nel.org>
>> > 
>> > and drop pgtable_init() as it has no real value and it's name is
>> 
>>    Its name.
> 
> oops :)
> 
> Andrew, can you replace this patch with the updated version, please?
>  
> From 52420723c9bfa84aa48f666330e96f9e5b2f3248 Mon Sep 17 00:00:00 2001
> From: "Mike Rapoport (IBM)" <rppt@...nel.org>
> Date: Sat, 18 Mar 2023 13:55:28 +0200
> Subject: [PATCH v3] mm: call {ptlock,pgtable}_cache_init() directly from
>  mm_core_init()
> 
> and drop pgtable_init() as it has no real value and its name is
> misleading.
> 
> Signed-off-by: Mike Rapoport (IBM) <rppt@...nel.org>

Reviewed-by: Vlastimil Babka <vbabka@...e.cz>

> ---
>  include/linux/mm.h | 6 ------
>  mm/mm_init.c       | 3 ++-
>  2 files changed, 2 insertions(+), 7 deletions(-)
> 
> diff --git a/include/linux/mm.h b/include/linux/mm.h
> index 2d7f095136fc..c3c67d8bc833 100644
> --- a/include/linux/mm.h
> +++ b/include/linux/mm.h
> @@ -2782,12 +2782,6 @@ static inline bool ptlock_init(struct page *page) { return true; }
>  static inline void ptlock_free(struct page *page) {}
>  #endif /* USE_SPLIT_PTE_PTLOCKS */
>  
> -static inline void pgtable_init(void)
> -{
> -	ptlock_cache_init();
> -	pgtable_cache_init();
> -}
> -
>  static inline bool pgtable_pte_page_ctor(struct page *page)
>  {
>  	if (!ptlock_init(page))
> diff --git a/mm/mm_init.c b/mm/mm_init.c
> index bba73f1fb277..f1475413394d 100644
> --- a/mm/mm_init.c
> +++ b/mm/mm_init.c
> @@ -2584,7 +2584,8 @@ void __init mm_core_init(void)
>  	 */
>  	page_ext_init_flatmem_late();
>  	kmemleak_init();
> -	pgtable_init();
> +	ptlock_cache_init();
> +	pgtable_cache_init();
>  	debug_objects_mem_init();
>  	vmalloc_init();
>  	/* If no deferred init page_ext now, as vmap is fully initialized */