From e4cc6ee2e40bdd57990577b7f851fa2ca48edf47 Mon Sep 17 00:00:00 2001
From: Chuck Lever <chuck.lever@oracle.com>
Date: Tue, 8 May 2007 18:23:28 -0400
Subject: [PATCH] NFS: Clean up NFSv4 XDR error message

Make it more useful for debugging purposes.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
---
 fs/nfs/nfs4xdr.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index f1e2b8cdf33c..938f37166788 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -2080,9 +2080,11 @@ static int nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, __be32 *p, struct nfs
 
 #define READ_BUF(nbytes)  do { \
 	p = xdr_inline_decode(xdr, nbytes); \
-	if (!p) { \
-		printk(KERN_WARNING "%s: reply buffer overflowed in line %d.", \
-			       	__FUNCTION__, __LINE__); \
+	if (unlikely(!p)) { \
+		printk(KERN_INFO "%s: prematurely hit end of receive" \
+				" buffer\n", __FUNCTION__); \
+		printk(KERN_INFO "%s: xdr->p=%p, bytes=%u, xdr->end=%p\n", \
+				__FUNCTION__, xdr->p, nbytes, xdr->end); \
 		return -EIO; \
 	} \
 } while (0)
-- 
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