lockd: Fix comment about NLMv3 backwards compatibility

NLMv2 is completely different protocol than NLMv1 and NLMv3, and in
original Sun implementation is used for RPC loopback callbacks from statd
to lockd services. Linux does not use nor does not implement NLMv2.

Hence, NLMv3 is not backward compatible with NLMv2. But NLMv3 is backward
compatible with NLMv1. Fix comment.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: NeilBrown <neilb@suse.de>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>

diff --git a/fs/lockd/clntxdr.c b/fs/lockd/clntxdr.c
index a3e97278b997cfee94217ce3b83adbd0df5134f4..6ea3448d2d31ea54451d6ec0fd01c5f31c35e123 100644 (file)
--- a/fs/lockd/clntxdr.c
+++ b/fs/lockd/clntxdr.c
@@ -2,8 +2,9 @@
 /*
  * linux/fs/lockd/clntxdr.c
  *
- * XDR functions to encode/decode NLM version 3 RPC arguments and results.
- * NLM version 3 is backwards compatible with NLM versions 1 and 2.
+ * XDR functions to encode/decode NLM version 1 and 3 RPC
+ * arguments and results. NLM version 2 is not specified
+ * by a standard, thus it is not implemented.
  *
  * NLM client-side only.
  *