NFS: Move cl_state_owners and related fields to the nfs_server struct

NFSv4 migration needs to reassociate state owners from the source to
the destination nfs_server data structures.  To make that easier, move
the cl_state_owners field to the nfs_server struct.  cl_openowner_id
and cl_lockowner_id accompany this move, as they are used in
conjunction with cl_state_owners.

The cl_lock field in the parent nfs_client continues to protect all
three of these fields.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 5 insertions, 4 deletions

diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h
index 7f20c0b47a91..27255ffdbe10 100644
--- a/include/linux/nfs_fs_sb.h
+++ b/include/linux/nfs_fs_sb.h
@@ -47,11 +47,7 @@ struct nfs_client {
         u64                     cl_clientid;    /* constant */
         unsigned long           cl_state;
 
-        struct rb_root          cl_openowner_id;
-        struct rb_root          cl_lockowner_id;
-
         struct list_head        cl_delegations;
-        struct rb_root          cl_state_owners;
         spinlock_t              cl_lock;
 
         unsigned long           cl_lease_time;
@@ -150,6 +146,11 @@ struct nfs_server {
                                                    filesystem */
         struct pnfs_layoutdriver_type  *pnfs_curr_ld; /* Active layout driver */
         struct rpc_wait_queue   roc_rpcwaitq;
+
+        /* the following fields are protected by nfs_client->cl_lock */
+        struct rb_root          state_owners;
+        struct rb_root          openowner_id;
+        struct rb_root          lockowner_id;
 #endif
         void (*destroy)(struct nfs_server *);