linux-kernel - [PATCH 10/10] hugetlb: make hugetlb selects SYSFS if !SYSCTL

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Message-ID: <20220826092422.39591-11-linmiaohe@huawei.com>
Date:   Fri, 26 Aug 2022 17:24:22 +0800
From:   Miaohe Lin <linmiaohe@...wei.com>
To:     <akpm@...ux-foundation.org>, <mike.kravetz@...cle.com>,
        <songmuchun@...edance.com>
CC:     <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
        <linmiaohe@...wei.com>
Subject: [PATCH 10/10] hugetlb: make hugetlb selects SYSFS if !SYSCTL

If CONFIG_SYSFS and CONFIG_SYSCTL are both undefined, hugetlb doesn't work
now as there's no way to set max huge pages. Make sure at least one of the
above configs is defined to make hugetlb works as expected.

Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>
---
 fs/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/Kconfig b/fs/Kconfig
index a547307c1ae8..b266e7b5de85 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -235,6 +235,7 @@ config ARCH_SUPPORTS_HUGETLBFS
 config HUGETLBFS
 	bool "HugeTLB file system support"
 	depends on X86 || IA64 || SPARC64 || ARCH_SUPPORTS_HUGETLBFS || BROKEN
+	select SYSFS if !SYSCTL
 	help
 	  hugetlbfs is a filesystem backing for HugeTLB pages, based on
 	  ramfs. For architectures that support it, say Y here and read
-- 
2.23.0