linux-kernel - [PATCH] fs/Kconfig: Enable HUGETLBFS only if ARCH_SUPPORTS

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Message-Id: <20250711102934.2399533-1-anshuman.khandual@arm.com>
Date: Fri, 11 Jul 2025 15:59:34 +0530
From: Anshuman Khandual <anshuman.khandual@....com>
To: linux-mm@...ck.org,
	akpm@...ux-foundation.org
Cc: Anshuman Khandual <anshuman.khandual@....com>,
	"David S. Miller" <davem@...emloft.net>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	x86@...nel.org,
	sparclinux@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-fsdevel@...r.kernel.org
Subject: [PATCH] fs/Kconfig: Enable HUGETLBFS only if ARCH_SUPPORTS_HUGETLBFS

Enable HUGETLBFS only when platform subscrbes via ARCH_SUPPORTS_HUGETLBFS.
Hence select ARCH_SUPPORTS_HUGETLBFS on existing x86 and sparc for their
continuing HUGETLBFS support. While here also just drop existing 'BROKEN'
dependency.

Cc: "David S. Miller" <davem@...emloft.net>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: x86@...nel.org
Cc: sparclinux@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
Cc: linux-fsdevel@...r.kernel.org
Cc: linux-mm@...ck.org
Signed-off-by: Anshuman Khandual <anshuman.khandual@....com>
---
 arch/sparc/Kconfig | 1 +
 arch/x86/Kconfig   | 1 +
 fs/Kconfig         | 2 +-
 3 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 0f88123925a4..68549eedfe6d 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -97,6 +97,7 @@ config SPARC64
 	select HAVE_ARCH_AUDITSYSCALL
 	select ARCH_SUPPORTS_ATOMIC_RMW
 	select ARCH_SUPPORTS_DEBUG_PAGEALLOC
+	select ARCH_SUPPORTS_HUGETLBFS
 	select HAVE_NMI
 	select HAVE_REGS_AND_STACK_ACCESS_API
 	select ARCH_USE_QUEUED_RWLOCKS
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 71019b3b54ea..9630e5e1336b 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -126,6 +126,7 @@ config X86
 	select ARCH_SUPPORTS_ACPI
 	select ARCH_SUPPORTS_ATOMIC_RMW
 	select ARCH_SUPPORTS_DEBUG_PAGEALLOC
+	select ARCH_SUPPORTS_HUGETLBFS
 	select ARCH_SUPPORTS_PAGE_TABLE_CHECK	if X86_64
 	select ARCH_SUPPORTS_NUMA_BALANCING	if X86_64
 	select ARCH_SUPPORTS_KMAP_LOCAL_FORCE_MAP	if NR_CPUS <= 4096
diff --git a/fs/Kconfig b/fs/Kconfig
index 44b6cdd36dc1..86a00a972442 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -256,7 +256,7 @@ config ARCH_SUPPORTS_HUGETLBFS
 
 menuconfig HUGETLBFS
 	bool "HugeTLB file system support"
-	depends on X86 || SPARC64 || ARCH_SUPPORTS_HUGETLBFS || BROKEN
+	depends on ARCH_SUPPORTS_HUGETLBFS
 	depends on (SYSFS || SYSCTL)
 	select MEMFD_CREATE
 	select PADATA if SMP
-- 
2.25.1