NFSv4: Clean up NFS4ERR_CB_PATH_DOWN error management...

Add a delegation cleanup phase to the state management loop, and do the
NFS4ERR_CB_PATH_DOWN recovery there.

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

1 files changed, 8 insertions, 6 deletions

diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c
index bc9d4f9a788d..ff2c1585d23f 100644
--- a/fs/nfs/delegation.c
+++ b/fs/nfs/delegation.c
@@ -258,7 +258,7 @@ static int __nfs_inode_return_delegation(struct inode *inode, struct nfs_delegat
 /*
  * Return all delegations that have been marked for return
  */
-static void nfs_client_return_marked_delegations(struct nfs_client *clp)
+void nfs_client_return_marked_delegations(struct nfs_client *clp)
 {
         struct nfs_delegation *delegation;
         struct inode *inode;
@@ -342,15 +342,16 @@ void nfs_super_return_all_delegations(struct super_block *sb)
         nfs_client_return_marked_delegations(clp);
 }
 
-static void nfs_client_return_all_delegations(struct nfs_client *clp)
+static void nfs_client_mark_return_all_delegations(struct nfs_client *clp)
 {
         struct nfs_delegation *delegation;
 
         rcu_read_lock();
-        list_for_each_entry_rcu(delegation, &clp->cl_delegations, super_list)
+        list_for_each_entry_rcu(delegation, &clp->cl_delegations, super_list) {
                 set_bit(NFS_DELEGATION_RETURN, &delegation->flags);
+                set_bit(NFS4CLNT_DELEGRETURN, &clp->cl_state);
+        }
         rcu_read_unlock();
-        nfs_client_return_marked_delegations(clp);
 }
 
 static int nfs_do_expire_all_delegations(void *ptr)
@@ -363,7 +364,8 @@ static int nfs_do_expire_all_delegations(void *ptr)
                 goto out;
         if (test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) == 0)
                 goto out;
-        nfs_client_return_all_delegations(clp);
+        nfs_client_mark_return_all_delegations(clp);
+        nfs_client_return_marked_delegations(clp);
 out:
         nfs_put_client(clp);
         module_put_and_exit(0);
@@ -392,7 +394,7 @@ void nfs_handle_cb_pathdown(struct nfs_client *clp)
 {
         if (clp == NULL)
                 return;
-        nfs_client_return_all_delegations(clp);
+        nfs_client_mark_return_all_delegations(clp);
 }
 
 struct recall_threadargs {