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From:   Seth Forshee <seth.forshee@canonical.com>
To:     Andrew Morton <akpm@linux-foundation.org>,
        Hugh Dickins <hughd@google.com>
Cc:     Chris Down <chris@chrisdown.name>,
        Amir Goldstein <amir73il@gmail.com>,
        Heiko Carstens <hca@linux.ibm.com>,
        Vasily Gorbik <gor@linux.ibm.com>,
        Christian Borntraeger <borntraeger@de.ibm.com>,
        linux-mm@kvack.org, linux-s390@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: [PATCH] tmpfs: Disallow CONFIG_TMPFS_INODE64 on s390
Date:   Fri,  5 Feb 2021 17:06:20 -0600
Message-Id: <20210205230620.518245-1-seth.forshee@canonical.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

This feature requires ino_t be 64-bits, which is true for every
64-bit architecture but s390, so prevent this option from being
selected there.

Fixes: ea3271f7196c ("tmpfs: support 64-bit inums per-sb")
Cc: <stable@vger.kernel.org> # v5.9+
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>
---
 fs/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/Kconfig b/fs/Kconfig
index aa4c12282301..3347ec7bd837 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -203,7 +203,7 @@ config TMPFS_XATTR
 
 config TMPFS_INODE64
 	bool "Use 64-bit ino_t by default in tmpfs"
-	depends on TMPFS && 64BIT
+	depends on TMPFS && 64BIT && !S390
 	default n
 	help
 	  tmpfs has historically used only inode numbers as wide as an unsigned
-- 
2.29.2