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-rw-r--r--backport-include/linux/string.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/backport-include/linux/string.h b/backport-include/linux/string.h
index b85d9c7..b1d26d1 100644
--- a/backport-include/linux/string.h
+++ b/backport-include/linux/string.h
@@ -29,4 +29,8 @@ void memzero_explicit(void *s, size_t count);
ssize_t strscpy(char *dest, const char *src, size_t count);
#endif
+#if LINUX_VERSION_IS_LESS(4,0,0)
+extern void kfree_const(const void *x);
+extern const char *kstrdup_const(const char *s, gfp_t gfp);
+#endif
#endif /* __BACKPORT_LINUX_STRING_H */