Re: [PATCH] tmpfs: disallow CONFIG_TMPFS_INODE64 on alpha
From: Hugh Dickins <hughd@google.com>
Date: 2021-02-08 22:56:03
Also in:
linux-alpha, linux-mm, lkml
On Mon, 8 Feb 2021, Seth Forshee wrote:
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 <redacted>Thanks, Acked-by: Hugh Dickins <hughd@google.com>
quoted hunk ↗ jump to hunk
--- 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