commit: 9a3ba432330e504ac61ff0043dbdaba7cea0e35a
From: Trond Myklebust <[email protected]>
Date: Mon, 12 Mar 2012 18:01:48 -0400
Subject: NFSv4: Rate limit the state manager warning messages

Prevent the state manager from filling up system logs when recovery
fails on the server.

Signed-off-by: Trond Myklebust <[email protected]>
Cc: [email protected]
---
 fs/nfs/callback_xdr.c |    4 +++-
 fs/nfs/nfs4proc.c     |    2 +-
 fs/nfs/nfs4state.c    |    4 ++--
 3 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c
index fd6cfdb..95bfc24 100644
--- a/fs/nfs/callback_xdr.c
+++ b/fs/nfs/callback_xdr.c
@@ -9,6 +9,8 @@
 #include <linux/sunrpc/svc.h>
 #include <linux/nfs4.h>
 #include <linux/nfs_fs.h>
+#include <linux/ratelimit.h>
+#include <linux/printk.h>
 #include <linux/slab.h>
 #include <linux/sunrpc/bc_xprt.h>
 #include "nfs4_fs.h"
@@ -167,7 +169,7 @@ static __be32 decode_compound_hdr_arg(struct xdr_stream 
*xdr, struct cb_compound
        if (hdr->minorversion <= 1) {
                hdr->cb_ident = ntohl(*p++); /* ignored by v4.1 */
        } else {
-               printk(KERN_WARNING "NFS: %s: NFSv4 server callback with "
+               pr_warn_ratelimited("NFS: %s: NFSv4 server callback with "
                        "illegal minor version %u!\n",
                        __func__, hdr->minorversion);
                return htonl(NFS4ERR_MINOR_VERS_MISMATCH);
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 36a7cda..5e0961a 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -1876,7 +1876,7 @@ static struct nfs4_state *nfs4_do_open(struct inode *dir, 
struct dentry *dentry,
                 * the user though...
                 */
                if (status == -NFS4ERR_BAD_SEQID) {
-                       printk(KERN_WARNING "NFS: v4 server %s "
+                       pr_warn_ratelimited("NFS: v4 server %s "
                                        " returned a bad sequence-id error!\n",
                                        
NFS_SERVER(dir)->nfs_client->cl_hostname);
                        exception.retry = 1;
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 7c58607..cb708b2 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -984,7 +984,7 @@ static void nfs_increment_seqid(int status, struct 
nfs_seqid *seqid)
                case -NFS4ERR_BAD_SEQID:
                        if (seqid->sequence->flags & NFS_SEQID_CONFIRMED)
                                return;
-                       printk(KERN_WARNING "NFS: v4 server returned a bad"
+                       pr_warn_ratelimited("NFS: v4 server returned a bad"
                                        " sequence-id error on an"
                                        " unconfirmed sequence %p!\n",
                                        seqid->sequence);
@@ -1840,7 +1840,7 @@ static void nfs4_state_manager(struct nfs_client *clp)
        } while (atomic_read(&clp->cl_count) > 1);
        return;
 out_error:
-       printk(KERN_WARNING "NFS: state manager failed on NFSv4 server %s"
+       pr_warn_ratelimited("NFS: state manager failed on NFSv4 server %s"
                        " with error %d\n", clp->cl_hostname, -status);
        nfs4_end_drain_session(clp);
        nfs4_clear_state_manager_bit(clp);
-- 
1.7.3.4
--
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