From ad69c389ec110ea54f8b0c0884b255340ef1c736 Mon Sep 17 00:00:00 2001 From: Seth Forshee Date: Tue, 9 Feb 2021 13:42:17 -0800 Subject: [PATCH] tmpfs: disallow CONFIG_TMPFS_INODE64 on alpha 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. Link: https://lkml.kernel.org/r/20210208215726.608197-1-seth.forshee@canonical.com Fixes: ea3271f7196c ("tmpfs: support 64-bit inums per-sb") Signed-off-by: Seth Forshee Acked-by: Hugh Dickins Cc: Chris Down Cc: Amir Goldstein Cc: Richard Henderson Cc: Ivan Kokshaysky Cc: Matt Turner Cc: [5.9+] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- 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