3.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jeff Layton <[email protected]>

commit 94ae1db226a5bcbb48372d81161f084c9e283fd8 upstream.

Currently, nfs4_set_delegation takes a reference to an existing
delegation and then checks to see if there is a conflict. If there is
one, then it doesn't release that reference.

Change the code to take the reference after the check and only if there
is no conflict.

Signed-off-by: Jeff Layton <[email protected]>
Signed-off-by: J. Bruce Fields <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

---
 fs/nfsd/nfs4state.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -3890,11 +3890,11 @@ nfs4_set_delegation(struct nfs4_client *
                status = nfs4_setlease(dp);
                goto out;
        }
-       atomic_inc(&fp->fi_delegees);
        if (fp->fi_had_conflict) {
                status = -EAGAIN;
                goto out_unlock;
        }
+       atomic_inc(&fp->fi_delegees);
        hash_delegation_locked(dp, fp);
        status = 0;
 out_unlock:


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