Add kmemdup

We have kmemdup as a UBIFS specific variant, put it into the correct
header files. Instead of reimplementing it just use memdup we already
have.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

2 files changed, 7 insertions, 1 deletions

diff --git a/include/linux/string.h b/include/linux/string.h
index ed4eeb5519..3418b4fbe4 100644
--- a/include/linux/string.h
+++ b/include/linux/string.h
@@ -115,4 +115,11 @@ void *memchr_inv(const void *start, int c, size_t bytes);
 }
 #endif
 
+void *memdup(const void *, size_t);
+
+static inline void *kmemdup(const void *src, size_t len, gfp_t gfp)
+{
+	return memdup(src, len);
+}
+
 #endif /* _LINUX_STRING_H_ */
diff --git a/include/string.h b/include/string.h
index 6ceb33224e..8c63f22491 100644
--- a/include/string.h
+++ b/include/string.h
@@ -3,7 +3,6 @@
 
 #include <linux/string.h>
 
-void *memdup(const void *, size_t);
 int strtobool(const char *str, int *val);
 
 void *__default_memset(void *, int, __kernel_size_t);