Introduce lttng_copy_from_user_check_nofault

[lttng-modules.git] / include / ringbuffer / backend.h

diff --git a/include/ringbuffer/backend.h b/include/ringbuffer/backend.h
index c6e613c1d991101b80b332f5500eb58984080449..6a90161839c76903f28bb4c5a5e4eede152dfc2c 100644 (file)
--- a/include/ringbuffer/backend.h
+++ b/include/ringbuffer/backend.h
@@ -22,6 +22,7 @@
 #include <linux/fs.h>
 #include <linux/mm.h>
 #include <wrapper/uaccess.h>
+#include <lttng/probe-user.h>
 
 /* Internal helpers */
 #include <ringbuffer/backend_internal.h>
@@ -580,14 +581,7 @@ unsigned long lib_ring_buffer_copy_from_user_check_nofault(void *dest,
                                                const void __user *src,
                                                unsigned long len)
 {
-       unsigned long ret;
-
-       if (!lttng_access_ok(VERIFY_READ, src, len))
-               return 1;
-       pagefault_disable();
-       ret = __copy_from_user_inatomic(dest, src, len);
-       pagefault_enable();
-       return ret;
+       return lttng_copy_from_user_check_nofault(dest, src, len);
 }
 
 #endif /* _LIB_RING_BUFFER_BACKEND_H */