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| author | Lachlan McIlroy <lachlan@redback.melbourne.sgi.com> | 2008-02-26 14:26:14 +1100 |
|---|---|---|
| committer | Lachlan McIlroy <lachlan@redback.melbourne.sgi.com> | 2008-02-26 14:26:14 +1100 |
| commit | 91e229bbad6524aabaac8717b2f559283670c37a (patch) | |
| tree | 84a55e4ac2dcf23add97bd9fde3e9cb232c12b30 /kernel/futex_compat.c | |
| parent | 6e5e93424dc66542c548dfaa3bfebe30d46d50dd (diff) | |
| parent | bfa274e2436fc7ef72ef51c878083647f1cfd429 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into for-linus
Diffstat (limited to 'kernel/futex_compat.c')
| -rw-r--r-- | kernel/futex_compat.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/kernel/futex_compat.c b/kernel/futex_compat.c index 7d5e4b016f3..ff90f049f8f 100644 --- a/kernel/futex_compat.c +++ b/kernel/futex_compat.c @@ -54,6 +54,9 @@ void compat_exit_robust_list(struct task_struct *curr) compat_long_t futex_offset; int rc; + if (!futex_cmpxchg_enabled) + return; + /* * Fetch the list head (which was registered earlier, via * sys_set_robust_list()): @@ -115,6 +118,9 @@ asmlinkage long compat_sys_set_robust_list(struct compat_robust_list_head __user *head, compat_size_t len) { + if (!futex_cmpxchg_enabled) + return -ENOSYS; + if (unlikely(len != sizeof(*head))) return -EINVAL; @@ -130,6 +136,9 @@ compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr, struct compat_robust_list_head __user *head; unsigned long ret; + if (!futex_cmpxchg_enabled) + return -ENOSYS; + if (!pid) head = current->compat_robust_list; else { |