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>
diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index 32b5fbf..192f2f8 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -172,7 +172,6 @@
if (err)
goto error_cleanup;
- INIT_LIST_HEAD(&clp->cl_delegations);
spin_lock_init(&clp->cl_lock);
INIT_DELAYED_WORK(&clp->cl_renewd, nfs4_renew_state);
rpc_init_wait_queue(&clp->cl_rpcwaitq, "NFS client");
@@ -1040,6 +1039,7 @@
/* Zero out the NFS state stuff */
INIT_LIST_HEAD(&server->client_link);
INIT_LIST_HEAD(&server->master_link);
+ INIT_LIST_HEAD(&server->delegations);
atomic_set(&server->active, 0);
