From: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
---
backport/backport-include/linux/string.h | 25 ++++++++++++++++++++++++
1 file changed, 25 insertions(+)
create mode 100644 backport/backport-include/linux/string.h
diff --git a/backport/backport-include/linux/string.h b/backport/backport-include/linux/string.h
new file mode 100644
index 00000000..af21ac51
--- /dev/null
+++ b/backport/backport-include/linux/string.h
@@ -0,0 +1,25 @@
+#ifndef __BACKPORT_LINUX_STRING_H
+#define __BACKPORT_LINUX_STRING_H
+#include_next <linux/string.h>
+
+#ifndef memset_after
+#define memset_after(obj, v, member) \
+({ \
+ u8 *__ptr = (u8 *)(obj); \
+ typeof(v) __val = (v); \
+ memset(__ptr + offsetofend(typeof(*(obj)), member), __val, \
+ sizeof(*(obj)) - offsetofend(typeof(*(obj)), member)); \
+})
+#endif
+
+#ifndef memset_startat
+#define memset_startat(obj, v, member) \
+({ \
+ u8 *__ptr = (u8 *)(obj); \
+ typeof(v) __val = (v); \
+ memset(__ptr + offsetof(typeof(*(obj)), member), __val, \
+ sizeof(*(obj)) - offsetof(typeof(*(obj)), member)); \
+})
+#endif
+
+#endif /* __BACKPORT_LINUX_STRING_H */
--
2.45.2
