[TCP]: Cleanup tcp_tso_acked and tcp_clean_rtx_queue

[linux-2.6-omap-h63xx.git] / fs / nfs / delegation.c

diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c
index 20ac403469a02b11998d553a6e54af63c92f20c2..c55a761c22bb69eb0b9c8a83f3cb575cff5a0845 100644 (file)
--- a/fs/nfs/delegation.c
+++ b/fs/nfs/delegation.c
@@ -20,10 +20,8 @@
 #include "delegation.h"
 #include "internal.h"
 
-static void nfs_free_delegation(struct nfs_delegation *delegation)
+static void nfs_do_free_delegation(struct nfs_delegation *delegation)
 {
-       if (delegation->cred)
-               put_rpccred(delegation->cred);
        kfree(delegation);
 }
 
@@ -31,7 +29,18 @@ static void nfs_free_delegation_callback(struct rcu_head *head)
 {
        struct nfs_delegation *delegation = container_of(head, struct nfs_delegation, rcu);
 
-       nfs_free_delegation(delegation);
+       nfs_do_free_delegation(delegation);
+}
+
+static void nfs_free_delegation(struct nfs_delegation *delegation)
+{
+       struct rpc_cred *cred;
+
+       cred = rcu_dereference(delegation->cred);
+       rcu_assign_pointer(delegation->cred, NULL);
+       call_rcu(&delegation->rcu, nfs_free_delegation_callback);
+       if (cred)
+               put_rpccred(cred);
 }
 
 static int nfs_delegation_claim_locks(struct nfs_open_context *ctx, struct nfs4_state *state)
@@ -166,7 +175,7 @@ static int nfs_do_return_delegation(struct inode *inode, struct nfs_delegation *
        int res = 0;
 
        res = nfs4_proc_delegreturn(inode, delegation->cred, &delegation->stateid);
-       call_rcu(&delegation->rcu, nfs_free_delegation_callback);
+       nfs_free_delegation(delegation);
        return res;
 }
 
@@ -448,7 +457,7 @@ restart:
                spin_unlock(&clp->cl_lock);
                rcu_read_unlock();
                if (delegation != NULL)
-                       call_rcu(&delegation->rcu, nfs_free_delegation_callback);
+                       nfs_free_delegation(delegation);
                goto restart;
        }
        rcu_read_unlock();