NFSv4: Support recalling delegations by stateid

There appear to be some rogue servers out there that issue multiple
delegations with different stateids for the same file. Ensure that when we
return delegations, we do so on a per-stateid basis rather than a per-file
basis.

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

1 files changed, 1 insertions, 9 deletions

diff --git a/fs/nfs/delegation.h b/fs/nfs/delegation.h
index f6e42fb21afb..7b22f1742445 100644
--- a/fs/nfs/delegation.h
+++ b/fs/nfs/delegation.h
@@ -26,7 +26,7 @@ struct nfs_delegation {
 
 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);
@@ -52,14 +52,6 @@ static inline int nfs_have_delegation(struct inode *inode, int flags)
         return 0;
 }
 
-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)
 {