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-rw-r--r--kernel/include/linux/sunrpc/auth.h8
1 files changed, 6 insertions, 2 deletions
diff --git a/kernel/include/linux/sunrpc/auth.h b/kernel/include/linux/sunrpc/auth.h
index a7cbb570c..1ecf13e14 100644
--- a/kernel/include/linux/sunrpc/auth.h
+++ b/kernel/include/linux/sunrpc/auth.h
@@ -18,9 +18,13 @@
#include <linux/atomic.h>
#include <linux/rcupdate.h>
#include <linux/uidgid.h>
+#include <linux/utsname.h>
-/* size of the nodename buffer */
-#define UNX_MAXNODENAME 32
+/*
+ * Size of the nodename buffer. RFC1831 specifies a hard limit of 255 bytes,
+ * but Linux hostnames are actually limited to __NEW_UTS_LEN bytes.
+ */
+#define UNX_MAXNODENAME __NEW_UTS_LEN
struct rpcsec_gss_info;