summary refs log tree commit diff
path: root/kernel/compat.c
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/compat.c')
-rw-r--r--kernel/compat.c21
1 files changed, 0 insertions, 21 deletions
diff --git a/kernel/compat.c b/kernel/compat.c
index 05adfd6fa8bf..55551989d9da 100644
--- a/kernel/compat.c
+++ b/kernel/compat.c
@@ -269,24 +269,3 @@ get_compat_sigset(sigset_t *set, const compat_sigset_t __user *compat)
 	return 0;
 }
 EXPORT_SYMBOL_GPL(get_compat_sigset);
-
-/*
- * Allocate user-space memory for the duration of a single system call,
- * in order to marshall parameters inside a compat thunk.
- */
-void __user *compat_alloc_user_space(unsigned long len)
-{
-	void __user *ptr;
-
-	/* If len would occupy more than half of the entire compat space... */
-	if (unlikely(len > (((compat_uptr_t)~0) >> 1)))
-		return NULL;
-
-	ptr = arch_compat_alloc_user_space(len);
-
-	if (unlikely(!access_ok(ptr, len)))
-		return NULL;
-
-	return ptr;
-}
-EXPORT_SYMBOL_GPL(compat_alloc_user_space);