linux-kernel - [PATCH] mm/pgtable: remove unddefined __HAVE_ARCH_P4D_ALLOC_ONE/__HAVE_ARCH_P4D

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Message-ID: <20260107063911.15299-1-alexs@kernel.org>
Date: Wed,  7 Jan 2026 14:39:10 +0800
From: alexs@...nel.org
To: Arnd Bergmann <arnd@...db.de>,
	linux-arch@...r.kernel.org (open list:GENERIC INCLUDE/ASM HEADER FILES),
	linux-kernel@...r.kernel.org (open list)
Cc: linux-kernel@...r.kernel.org,
	Alex Shi <alexs@...nel.org>,
	linux-arch@...r.kernel.org,
	linux-mm@...ck.org,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH] mm/pgtable: remove unddefined __HAVE_ARCH_P4D_ALLOC_ONE/__HAVE_ARCH_P4D_FREE

From: Alex Shi <alexs@...nel.org>

No any archs has ever define __HAVE_ARCH_P4D_ALLOC_ONE/__HAVE_ARCH_P4D_FREE
So let's remove them.

Signed-off-by: Alex Shi <alexs@...nel.org>
Cc: linux-arch@...r.kernel.org
Cc: linux-mm@...ck.org
Cc: Arnd Bergmann <arnd@...db.de>
Cc: Andrew Morton <akpm@...ux-foundation.org>
---
 include/asm-generic/pgalloc.h | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/include/asm-generic/pgalloc.h b/include/asm-generic/pgalloc.h
index 5fb31e0fe15f..11bafe764599 100644
--- a/include/asm-generic/pgalloc.h
+++ b/include/asm-generic/pgalloc.h
@@ -246,13 +246,11 @@ static inline p4d_t *__p4d_alloc_one_noprof(struct mm_struct *mm, unsigned long
 }
 #define __p4d_alloc_one(...)	alloc_hooks(__p4d_alloc_one_noprof(__VA_ARGS__))
 
-#ifndef __HAVE_ARCH_P4D_ALLOC_ONE
 static inline p4d_t *p4d_alloc_one_noprof(struct mm_struct *mm, unsigned long addr)
 {
 	return __p4d_alloc_one_noprof(mm, addr);
 }
 #define p4d_alloc_one(...)	alloc_hooks(p4d_alloc_one_noprof(__VA_ARGS__))
-#endif
 
 static inline void __p4d_free(struct mm_struct *mm, p4d_t *p4d)
 {
@@ -262,13 +260,11 @@ static inline void __p4d_free(struct mm_struct *mm, p4d_t *p4d)
 	pagetable_dtor_free(ptdesc);
 }
 
-#ifndef __HAVE_ARCH_P4D_FREE
 static inline void p4d_free(struct mm_struct *mm, p4d_t *p4d)
 {
 	if (!mm_p4d_folded(mm))
 		__p4d_free(mm, p4d);
 }
-#endif
 
 #endif /* CONFIG_PGTABLE_LEVELS > 4 */
 
-- 
2.43.0