module: remove module_text_address()
Impact: Replace and remove risky (non-EXPORTed) API
module_text_address() returns a pointer to the module, which given locking
improvements in module.c, is useless except to test for NULL:
1) If the module can't go away, use __module_text_address.
2) Otherwise, just use is_module_text_address().
Cc: linux-mtd@lists.infradead.org
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
diff --git a/kernel/module.c b/kernel/module.c
index bd15a94..8ddca62 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -908,8 +908,10 @@
if (core_kernel_text((unsigned long)addr))
return;
- if (!(modaddr = module_text_address((unsigned long)addr)))
- BUG();
+ /* module_text_address is safe here: we're supposed to have reference
+ * to module from symbol_get, so it can't go away. */
+ modaddr = __module_text_address((unsigned long)addr);
+ BUG_ON(!modaddr);
module_put(modaddr);
}
EXPORT_SYMBOL_GPL(symbol_put_addr);
@@ -2821,17 +2823,6 @@
return mod;
}
-struct module *module_text_address(unsigned long addr)
-{
- struct module *mod;
-
- preempt_disable();
- mod = __module_text_address(addr);
- preempt_enable();
-
- return mod;
-}
-
/* Don't grab lock, we're oopsing. */
void print_modules(void)
{