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 <Trond.Myklebust@netapp.com>
Cc: stable@vger.kernel.org

1 files changed, 3 insertions, 1 deletions

diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c
index fd6cfdb917d..95bfc243992 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);