NFSv4.1: Set the RPC_CLNT_CREATE_INFINITE_SLOTS flag for NFSv4.1 transports

This ensures that the RPC layer doesn't override the NFS session
negotiation.

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

3 files changed, 5 insertions, 0 deletions

diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index 84d8eae203a7..c513b0cc835f 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -593,6 +593,8 @@ int nfs_create_rpc_client(struct nfs_client *clp,
                 args.flags |= RPC_CLNT_CREATE_DISCRTRY;
         if (test_bit(NFS_CS_NORESVPORT, &clp->cl_flags))
                 args.flags |= RPC_CLNT_CREATE_NONPRIVPORT;
+        if (test_bit(NFS_CS_INFINITE_SLOTS, &clp->cl_flags))
+                args.flags |= RPC_CLNT_CREATE_INFINITE_SLOTS;
 
         if (!IS_ERR(clp->cl_rpcclient))
                 return 0;
diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c
index 17b34b2da2df..f4d4d4ec6bf7 100644
--- a/fs/nfs/nfs4client.c
+++ b/fs/nfs/nfs4client.c
@@ -198,6 +198,8 @@ struct nfs_client *nfs4_init_client(struct nfs_client *clp,
         /* Check NFS protocol revision and initialize RPC op vector */
         clp->rpc_ops = &nfs_v4_clientops;
 
+        if (clp->cl_minorversion != 0)
+                __set_bit(NFS_CS_INFINITE_SLOTS, &clp->cl_flags);
         __set_bit(NFS_CS_DISCRTRY, &clp->cl_flags);
         error = nfs_create_rpc_client(clp, timeparms, authflavour);
         if (error < 0)
diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h
index d8fdfdc7a8fe..3b7fa2abecca 100644
--- a/include/linux/nfs_fs_sb.h
+++ b/include/linux/nfs_fs_sb.h
@@ -40,6 +40,7 @@ struct nfs_client {
 #define NFS_CS_NORESVPORT       0               /* - use ephemeral src port */
 #define NFS_CS_DISCRTRY         1               /* - disconnect on RPC retry */
 #define NFS_CS_MIGRATION        2               /* - transparent state migr */
+#define NFS_CS_INFINITE_SLOTS   3               /* - don't limit TCP slots */
         struct sockaddr_storage cl_addr;        /* server identifier */
         size_t                  cl_addrlen;
         char *                  cl_hostname;    /* hostname of server */