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

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Message-ID: <ZBrTtQKe7SowXSKb@kernel.org>
Date:   Wed, 22 Mar 2023 12:08:53 +0200
From:   Mike Rapoport <rppt@...nel.org>
To:     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>,
        Vlastimil Babka <vbabka@...e.cz>, 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 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>
---
 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 */
-- 
2.35.1

-- 
Sincerely yours,
Mike.