+ ext4-in-ext4_dir_llseek-check-syscall-bitness-directly.patch added to -mm tree

+ ext4-in-ext4_dir_llseek-check-syscall-bitness-directly.patch added to -mm tree

[akpm]

The patch titled
     Subject: ext4: In ext4_dir_llseek, check syscall bitness directly
has been added to the -mm tree.  Its filename is
     ext4-in-ext4_dir_llseek-check-syscall-bitness-directly.patch

This patch should soon appear at
    http://ozlabs.org/~akpm/mmots/broken-out/ext4-in-ext4_dir_llseek-check-syscall-bitness-directly.patch
and later at
    http://ozlabs.org/~akpm/mmotm/broken-out/ext4-in-ext4_dir_llseek-check-syscall-bitness-directly.patch

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------------------------------------------------------
From: Andy Lutomirski <luto@kernel.org>
Subject: ext4: In ext4_dir_llseek, check syscall bitness directly

ext4 treats directory offsets differently for 32-bit and 64-bit
callers.  Check the caller type using in_compat_syscall, not
is_compat_task.  This changes behavior on SPARC slightly.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Andreas Dilger <adilger.kernel@dilger.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 fs/ext4/dir.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -puN fs/ext4/dir.c~ext4-in-ext4_dir_llseek-check-syscall-bitness-directly fs/ext4/dir.c
--- a/fs/ext4/dir.c~ext4-in-ext4_dir_llseek-check-syscall-bitness-directly
+++ a/fs/ext4/dir.c
@@ -276,7 +276,7 @@ errout:
 static inline int is_32bit_api(void)
 {
 #ifdef CONFIG_COMPAT
-	return is_compat_task();
+	return in_compat_syscall();
 #else
 	return (BITS_PER_LONG == 32);
 #endif
_

Patches currently in -mm which might be from luto@kernel.org are

compat-add-in_compat_syscall-to-ask-whether-were-in-a-compat-syscall.patch
sparc-compat-provide-an-accurate-in_compat_syscall-implementation.patch
sparc-syscall-fix-syscall_get_arch.patch
seccomp-check-in_compat_syscall-not-is_compat_task-in-strict-mode.patch
ptrace-in-peek_siginfo-check-syscall-bitness-not-task-bitness.patch
auditsc-for-seccomp-events-log-syscall-compat-state-using-in_compat_syscall.patch
staging-lustre-switch-from-is_compat_task-to-in_compat_syscall.patch
ext4-in-ext4_dir_llseek-check-syscall-bitness-directly.patch
net-sctp-use-in_compat_syscall-for-sctp_getsockopt_connectx3.patch
net-xfrm_user-use-in_compat_syscall-to-deny-compat-syscalls.patch
firewire-use-in_compat_syscall-to-check-ioctl-compatness.patch
efivars-use-in_compat_syscall-to-check-for-compat-callers.patch
amdkfd-use-in_compat_syscall-to-check-open-caller-type.patch
input-redefine-input_compat_test-as-in_compat_syscall.patch
uhid-check-write-bitness-using-in_compat_syscall.patch
x86-compat-remove-is_compat_task.patch