diff options
| author | Heiko Carstens <hca@linux.ibm.com> | 2021-02-10 21:51:02 +0100 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2021-02-13 17:17:53 +0100 |
| commit | 96c0a6a72d181a330db6dc9848ff2e6584b1aa5b (patch) | |
| tree | a07fb7a168db5b28c239c84822e818cee1655bc1 /arch | |
| parent | efa54735905c03bf876b4451cfaef6b45046bc53 (diff) | |
s390,alpha: switch to 64-bit ino_t
s390 and alpha are the only 64 bit architectures with a 32-bit ino_t.
Since this is quite unusual this causes bugs from time to time.
See e.g. commit ebce3eb2f7ef ("ceph: fix inode number handling on
arches with 32-bit ino_t") for an example.
This (obviously) also prevents s390 and alpha to use 64-bit ino_t for
tmpfs. See commit b85a7a8bb573 ("tmpfs: disallow CONFIG_TMPFS_INODE64
on s390").
Therefore switch both s390 and alpha to 64-bit ino_t. This should only
have an effect on the ustat system call. To prevent ABI breakage
define struct ustat compatible to the old layout and change
sys_ustat() accordingly.
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/Kconfig | 4 | ||||
| -rw-r--r-- | arch/alpha/Kconfig | 1 | ||||
| -rw-r--r-- | arch/s390/Kconfig | 1 |
3 files changed, 6 insertions, 0 deletions
diff --git a/arch/Kconfig b/arch/Kconfig index 24862d15f3a3..383c98e86a70 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -327,6 +327,10 @@ config ARCH_32BIT_OFF_T still support 32-bit off_t. This option is enabled for all such architectures explicitly. +# Selected by 64 bit architectures which have a 32 bit f_tinode in struct ustat +config ARCH_32BIT_USTAT_F_TINODE + bool + config HAVE_ASM_MODVERSIONS bool help diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig index 1f51437d5765..96ce6565890e 100644 --- a/arch/alpha/Kconfig +++ b/arch/alpha/Kconfig @@ -2,6 +2,7 @@ config ALPHA bool default y + select ARCH_32BIT_USTAT_F_TINODE select ARCH_MIGHT_HAVE_PC_PARPORT select ARCH_MIGHT_HAVE_PC_SERIO select ARCH_NO_PREEMPT diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 5de9f409e4d0..b68e6952866d 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -58,6 +58,7 @@ config S390 # Note: keep this list sorted alphabetically # imply IMA_SECURE_AND_OR_TRUSTED_BOOT + select ARCH_32BIT_USTAT_F_TINODE select ARCH_BINFMT_ELF_STATE select ARCH_HAS_DEBUG_VM_PGTABLE select ARCH_HAS_DEBUG_WX |