1 files changed, 12 insertions, 14 deletions

diff --git a/fs/nfs/delegation.h b/fs/nfs/delegation.h
index 2cfd4b24c7fe..5874ce7fdbae 100644
--- a/fs/nfs/delegation.h
+++ b/fs/nfs/delegation.h
@@ -22,11 +22,12 @@ struct nfs_delegation {
         long flags;
         loff_t maxsize;
         __u64 change_attr;
+        struct rcu_head rcu;
 };
 
 int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct nfs_openres *res);
 void nfs_inode_reclaim_delegation(struct inode *inode, struct rpc_cred *cred, struct nfs_openres *res);
-int __nfs_inode_return_delegation(struct inode *inode);
+int nfs_inode_return_delegation(struct inode *inode);
 int nfs_async_inode_return_delegation(struct inode *inode, const nfs4_stateid *stateid);
 
 struct inode *nfs_delegation_find_inode(struct nfs_client *clp, const struct nfs_fh *fhandle);
@@ -39,27 +40,24 @@ void nfs_delegation_reap_unclaimed(struct nfs_client *clp);
 
 /* NFSv4 delegation-related procedures */
 int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid);
-int nfs4_open_delegation_recall(struct dentry *dentry, struct nfs4_state *state);
+int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid);
 int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl);
 int nfs4_copy_delegation_stateid(nfs4_stateid *dst, struct inode *inode);
 
 static inline int nfs_have_delegation(struct inode *inode, int flags)
 {
+        struct nfs_delegation *delegation;
+        int ret = 0;
+
         flags &= FMODE_READ|FMODE_WRITE;
-        smp_rmb();
-        if ((NFS_I(inode)->delegation_state & flags) == flags)
-                return 1;
-        return 0;
+        rcu_read_lock();
+        delegation = rcu_dereference(NFS_I(inode)->delegation);
+        if (delegation != NULL && (delegation->type & flags) == flags)
+                ret = 1;
+        rcu_read_unlock();
+        return ret;
 }
 
-static inline int nfs_inode_return_delegation(struct inode *inode)
-{
-        int err = 0;
-
-        if (NFS_I(inode)->delegation != NULL)
-                err = __nfs_inode_return_delegation(inode);
-        return err;
-}
 #else
 static inline int nfs_have_delegation(struct inode *inode, int flags)
 {