From: Andy Adamson <andros@netapp.com>
Date: Thu, 11 Apr 2013 13:28:45 +0000 (-0400)
Subject: NFSv4 release the sequence id in the return on close case
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=b9536ad52152ff440231dcc2dd9cfa644f5413c9;p=linux-beck.git

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>
---

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);