NFSv4: Improve the debugging of bad sequence id errors...

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 4f78c0d1eab5..4fa4054cdf34 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -38,6 +38,7 @@
  * subsequent patch.
  */
 
+#include <linux/kernel.h>
 #include <linux/slab.h>
 #include <linux/smp_lock.h>
 #include <linux/nfs_fs.h>
@@ -648,6 +649,12 @@ static void nfs_increment_seqid(int status, struct nfs_seqid *seqid)
                 case 0:
                         break;
                 case -NFS4ERR_BAD_SEQID:
+                        if (seqid->sequence->flags & NFS_SEQID_CONFIRMED)
+                                return;
+                        printk(KERN_WARNING "NFS: v4 server returned a bad"
+                                        "sequence-id error on an"
+                                        "unconfirmed sequence %p!\n",
+                                        seqid->sequence);
                 case -NFS4ERR_STALE_CLIENTID:
                 case -NFS4ERR_STALE_STATEID:
                 case -NFS4ERR_BAD_STATEID: