NFS: start printks w/ NFS: even if __func__ shown

This patch addresses printks that have some context to show that they are
from fs/nfs/, but for the sake of consistency now start with NFS:

Signed-off-by: Weston Andros Adamson <dros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c
index d50b274..2f45aa7 100644
--- a/fs/nfs/callback_xdr.c
+++ b/fs/nfs/callback_xdr.c
@@ -73,7 +73,7 @@
 
 	p = xdr_inline_decode(xdr, nbytes);
 	if (unlikely(p == NULL))
-		printk(KERN_WARNING "NFSv4 callback reply buffer overflowed!\n");
+		printk(KERN_WARNING "NFS: NFSv4 callback reply buffer overflowed!\n");
 	return p;
 }
 
@@ -155,7 +155,7 @@
 		return status;
 	/* We do not like overly long tags! */
 	if (hdr->taglen > CB_OP_TAGLEN_MAXSZ - 12) {
-		printk("NFSv4 CALLBACK %s: client sent tag of length %u\n",
+		printk("NFS: NFSv4 CALLBACK %s: client sent tag of length %u\n",
 				__func__, hdr->taglen);
 		return htonl(NFS4ERR_RESOURCE);
 	}
@@ -167,7 +167,7 @@
 	if (hdr->minorversion <= 1) {
 		hdr->cb_ident = ntohl(*p++); /* ignored by v4.1 */
 	} else {
-		printk(KERN_WARNING "%s: NFSv4 server callback with "
+		printk(KERN_WARNING "NFS: %s: NFSv4 server callback with "
 			"illegal minor version %u!\n",
 			__func__, hdr->minorversion);
 		return htonl(NFS4ERR_MINOR_VERS_MISMATCH);