1 files changed, 0 insertions, 49 deletions
diff --git a/include/linux/mman.h b/include/linux/mman.h
index 0ba8a7e8b90a..389521594c69 100644
--- a/include/linux/mman.h
+++ b/include/linux/mman.h
@@ -170,53 +170,4 @@ static inline bool arch_memory_deny_write_exec_supported(void)
 }
 #define arch_memory_deny_write_exec_supported arch_memory_deny_write_exec_supported
 #endif
-
-/*
- * Denies creating a writable executable mapping or gaining executable permissions.
- *
- * This denies the following:
- *
- * 	a)	mmap(PROT_WRITE | PROT_EXEC)
- *
- *	b)	mmap(PROT_WRITE)
- *		mprotect(PROT_EXEC)
- *
- *	c)	mmap(PROT_WRITE)
- *		mprotect(PROT_READ)
- *		mprotect(PROT_EXEC)
- *
- * But allows the following:
- *
- *	d)	mmap(PROT_READ | PROT_EXEC)
- *		mmap(PROT_READ | PROT_EXEC | PROT_BTI)
- *
- * This is only applicable if the user has set the Memory-Deny-Write-Execute
- * (MDWE) protection mask for the current process.
- *
- * @old specifies the VMA flags the VMA originally possessed, and @new the ones
- * we propose to set.
- *
- * Return: false if proposed change is OK, true if not ok and should be denied.
- */
-static inline bool map_deny_write_exec(unsigned long old, unsigned long new)
-{
-	/* If MDWE is disabled, we have nothing to deny. */
-	if (!mm_flags_test(MMF_HAS_MDWE, current->mm))
-		return false;
-
-	/* If the new VMA is not executable, we have nothing to deny. */
-	if (!(new & VM_EXEC))
-		return false;
-
-	/* Under MDWE we do not accept newly writably executable VMAs... */
-	if (new & VM_WRITE)
-		return true;
-
-	/* ...nor previously non-executable VMAs becoming executable. */
-	if (!(old & VM_EXEC))
-		return true;
-
-	return false;
-}
-
 #endif /* _LINUX_MMAN_H */