The patch titled
Subject: tmpfs: disallow CONFIG_TMPFS_INODE64 on alpha
has been added to the -mm tree. Its filename is
tmpfs-disallow-config_tmpfs_inode64-on-alpha.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/tmpfs-disallow-config_tmpfs_inode64-on-alpha.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/tmpfs-disallow-config_tmpfs_inode64-on-alpha.patch
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------------------------------------------------------
From: Seth Forshee <seth.forshee@xxxxxxxxxxxxx>
Subject: 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@xxxxxxxxxxxxx
Fixes: ea3271f7196c ("tmpfs: support 64-bit inums per-sb")
Signed-off-by: Seth Forshee <seth.forshee@xxxxxxxxxxxxx>
Cc: Chris Down <chris@xxxxxxxxxxxxxx>
Cc: Amir Goldstein <amir73il@xxxxxxxxx>
Cc: Richard Henderson <rth@xxxxxxxxxxx>
Cc: Ivan Kokshaysky <ink@xxxxxxxxxxxxxxxxxxxx>
Cc: Matt Turner <mattst88@xxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> [5.9+]
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/Kconfig~tmpfs-disallow-config_tmpfs_inode64-on-alpha
+++ a/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
_
Patches currently in -mm which might be from seth.forshee@xxxxxxxxxxxxx are
tmpfs-disallow-config_tmpfs_inode64-on-s390.patch
tmpfs-disallow-config_tmpfs_inode64-on-alpha.patch
