nfsd4: fix leak on allocation error

Also share some common exit code.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 65978a9..099d6fa 100644 (file)
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -2699,14 +2699,12 @@ nfs4_open_delegation(struct svc_fh *fh, struct nfsd4_open *open, struct nfs4_sta
        }
 
        dp = alloc_init_deleg(sop->so_client, stp, fh, flag);
-       if (dp == NULL) {
-               flag = NFS4_OPEN_DELEGATE_NONE;
-               goto out;
-       }
+       if (dp == NULL)
+               goto out_no_deleg;
        status = -ENOMEM;
        fl = nfs4_alloc_init_lease(dp, flag);
        if (!fl)
-               goto out;
+               goto out_free;
        /* vfs_setlease checks to see if delegation should be handed out.
         * the lock_manager callback fl_change is used
         */
@@ -2714,9 +2712,7 @@ nfs4_open_delegation(struct svc_fh *fh, struct nfsd4_open *open, struct nfs4_sta
                dprintk("NFSD: setlease failed [%d], no delegation\n", status);
                dp->dl_flock = NULL;
                locks_free_lock(fl);
-               unhash_delegation(dp);
-               flag = NFS4_OPEN_DELEGATE_NONE;
-               goto out;
+               goto out_free;
        }
 
        memcpy(&open->op_delegate_stateid, &dp->dl_stateid, sizeof(dp->dl_stateid));
@@ -2729,6 +2725,12 @@ out:
                        && open->op_delegate_type != NFS4_OPEN_DELEGATE_NONE)
                dprintk("NFSD: WARNING: refusing delegation reclaim\n");
        open->op_delegate_type = flag;
+       return;
+out_free:
+       unhash_delegation(dp);
+out_no_deleg:
+       flag = NFS4_OPEN_DELEGATE_NONE;
+       goto out;
 }
 
 /*