NFS: Move cl_delegations to the nfs_server struct

Delegations are per-inode, not per-nfs_client.  When a server file
system is migrated, delegations on the client must be moved from the
source to the destination nfs_server.  Make it easier to manage a
mount point's delegation list across a migration event by moving the
list to the nfs_server struct.

Clean up: I added documenting comments to public functions I changed
in this patch.  For consistency I added comments to all the other
public functions in fs/nfs/delegation.c.

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

1 files changed, 1 insertions, 1 deletions

diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h
index 27255ffdbe10..b197563913bf 100644
--- a/include/linux/nfs_fs_sb.h
+++ b/include/linux/nfs_fs_sb.h
@@ -47,7 +47,6 @@ struct nfs_client {
         u64                     cl_clientid;    /* constant */
         unsigned long           cl_state;
 
-        struct list_head        cl_delegations;
         spinlock_t              cl_lock;
 
         unsigned long           cl_lease_time;
@@ -152,6 +151,7 @@ struct nfs_server {
         struct rb_root          openowner_id;
         struct rb_root          lockowner_id;
 #endif
+        struct list_head        delegations;
         void (*destroy)(struct nfs_server *);
 
         atomic_t active; /* Keep trace of any activity to this server */