From mboxrd@z Thu Jan 1 00:00:00 1970 From: Seth Forshee Subject: [PATCH] tmpfs: disallow CONFIG_TMPFS_INODE64 on alpha Date: Mon, 8 Feb 2021 15:57:26 -0600 Message-ID: <20210208215726.608197-1-seth.forshee@canonical.com> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: List-ID: Content-Type: text/plain; charset="us-ascii" To: Andrew Morton Cc: Chris Down , Amir Goldstein , Richard Henderson , Ivan Kokshaysky , Matt Turner , linux-mm@kvack.org, linux-alpha@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org As with s390, alpha is a 64-bit architecture with a 32-bit ino_t. With CONFIG_TMPFS_INODE64=y tmpfs mounts will get 64-bit inode numbers and display "inode64" in the mount options, whereas passing "inode64" in the mount options will fail. This leads to erroneous behaviours such as this: # mkdir mnt # mount -t tmpfs nodev mnt # mount -o remount,rw mnt mount: /home/ubuntu/mnt: mount point not mounted or bad option. Prevent CONFIG_TMPFS_INODE64 from being selected on alpha. Fixes: ea3271f7196c ("tmpfs: support 64-bit inums per-sb") Cc: stable@vger.kernel.org # v5.9+ Signed-off-by: Seth Forshee --- fs/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/Kconfig b/fs/Kconfig index 3347ec7bd837..da524c4d7b7e 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 && !S390 + depends on TMPFS && 64BIT && !(S390 || ALPHA) default n help tmpfs has historically used only inode numbers as wide as an unsigned -- 2.29.2