NFSv4 release the sequence id in the return on close case

Otherwise we deadlock if state recovery is initiated while we
sleep.

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

1 files changed, 3 insertions, 1 deletions

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 264ddb16255f..83197fb60d5f 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -2275,8 +2275,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
         if (calldata->arg.fmode == 0) {
                 task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE];
                 if (calldata->roc &&
-                    pnfs_roc_drain(inode, &calldata->roc_barrier, task))
+                    pnfs_roc_drain(inode, &calldata->roc_barrier, task)) {
+                        nfs_release_seqid(calldata->arg.seqid);
                         goto out_wait;
+                    }
         }
 
         nfs_fattr_init(calldata->res.fattr);