diff --git a/fs/compat.c b/fs/compat.c
index 43ca0165740c09d6384fff4bce30279aca3e8ab4..2ce4456aad309eebc3df3c200178561046d87093 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -702,9 +702,6 @@ static int do_nfs4_super_data_conv(void *raw_data)
 		real->flags = raw->flags;
 		real->version = raw->version;
 	}
-	else {
-		return -EINVAL;
-	}
 
 	return 0;
 }
diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c
index bd185a572a23aeb0d015b701d0786dab359f260a..ecc06c619494f6cbbe07942c4c72b3002dd290da 100644
--- a/fs/nfs/callback.c
+++ b/fs/nfs/callback.c
@@ -105,7 +105,7 @@ static void nfs_callback_svc(struct svc_rqst *rqstp)
  */
 int nfs_callback_up(void)
 {
-	struct svc_serv *serv;
+	struct svc_serv *serv = NULL;
 	int ret = 0;
 
 	lock_kernel();
@@ -122,24 +122,30 @@ int nfs_callback_up(void)
 	ret = svc_create_xprt(serv, "tcp", nfs_callback_set_tcpport,
 			      SVC_SOCK_ANONYMOUS);
 	if (ret <= 0)
-		goto out_destroy;
+		goto out_err;
 	nfs_callback_tcpport = ret;
 	dprintk("Callback port = 0x%x\n", nfs_callback_tcpport);
 
 	ret = svc_create_thread(nfs_callback_svc, serv);
 	if (ret < 0)
-		goto out_destroy;
+		goto out_err;
 	nfs_callback_info.serv = serv;
 	wait_for_completion(&nfs_callback_info.started);
 out:
+	/*
+	 * svc_create creates the svc_serv with sv_nrthreads == 1, and then
+	 * svc_create_thread increments that. So we need to call svc_destroy
+	 * on both success and failure so that the refcount is 1 when the
+	 * thread exits.
+	 */
+	if (serv)
+		svc_destroy(serv);
 	mutex_unlock(&nfs_callback_mutex);
 	unlock_kernel();
 	return ret;
-out_destroy:
+out_err:
 	dprintk("Couldn't create callback socket or server thread; err = %d\n",
 		ret);
-	svc_destroy(serv);
-out_err:
 	nfs_callback_info.users--;
 	goto out;
 }
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 476cb0f837fd191d08898c87674d7a1fe51e84ee..ae04892a5e5d23922cec2575ffa4609ced0afde7 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -154,7 +154,6 @@ typedef struct {
 	struct nfs_entry *entry;
 	decode_dirent_t	decode;
 	int		plus;
-	int		error;
 	unsigned long	timestamp;
 	int		timestamp_valid;
 } nfs_readdir_descriptor_t;
@@ -213,7 +212,6 @@ int nfs_readdir_filler(nfs_readdir_descriptor_t *desc, struct page *page)
 	return 0;
  error:
 	unlock_page(page);
-	desc->error = error;
 	return -EIO;
 }
 
@@ -483,13 +481,13 @@ int uncached_readdir(nfs_readdir_descriptor_t *desc, void *dirent,
 		goto out;
 	}
 	timestamp = jiffies;
-	desc->error = NFS_PROTO(inode)->readdir(file->f_path.dentry, cred, *desc->dir_cookie,
-						page,
+	status = NFS_PROTO(inode)->readdir(file->f_path.dentry, cred,
+						*desc->dir_cookie, page,
 						NFS_SERVER(inode)->dtsize,
 						desc->plus);
 	desc->page = page;
 	desc->ptr = kmap(page);		/* matching kunmap in nfs_do_filldir */
-	if (desc->error >= 0) {
+	if (status >= 0) {
 		desc->timestamp = timestamp;
 		desc->timestamp_valid = 1;
 		if ((status = dir_decode(desc)) == 0)
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index f9c7432471dcf772b92cf29662740e9168c08510..6233eb5e98c198cc3be92a03d26d532e06edea60 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -682,8 +682,8 @@ static void nfs_increment_seqid(int status, struct nfs_seqid *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",
+					" sequence-id error on an"
+					" unconfirmed sequence %p!\n",
 					seqid->sequence);
 		case -NFS4ERR_STALE_CLIENTID:
 		case -NFS4ERR_STALE_STATEID:
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 7f4505f6ac6f55fd49c1a8c07bbb65ce63d41388..1fb3818436501bc7bfd7637d7744576fe09e6041 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -190,6 +190,10 @@ static match_table_t nfs_secflavor_tokens = {
 	{ Opt_sec_lkeyi, "lkeyi" },
 	{ Opt_sec_lkeyp, "lkeyp" },
 
+	{ Opt_sec_spkm, "spkm3" },
+	{ Opt_sec_spkmi, "spkm3i" },
+	{ Opt_sec_spkmp, "spkm3p" },
+
 	{ Opt_sec_err, NULL }
 };