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NFSv4: Retry CLOSE and DELEGRETURN on NFS4ERR_OLD_STATEID.

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If we're racing with an OPEN, then retry the operation instead of
declaring it a success.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
[Andrew W Elble: Fix a typo in nfs4_refresh_open_stateid]
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Trond Myklebust
2017-11-06 15:28:05 -05:00
committed by Anna Schumaker
parent d803224c84
commit 12f275cdd1
5 changed files with 65 additions and 2 deletions
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21
fs/nfs/nfs4proc.c
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@@ -3199,13 +3199,21 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
}
break;
case -NFS4ERR_OLD_STATEID:
/* Did we race with OPEN? */
if (nfs4_refresh_open_stateid(&calldata->arg.stateid,
state)) {
task->tk_status = 0;
rpc_restart_call_prepare(task);
}
goto out_release;
case -NFS4ERR_ADMIN_REVOKED:
case -NFS4ERR_STALE_STATEID:
case -NFS4ERR_EXPIRED:
nfs4_free_revoked_stateid(server,
&calldata->arg.stateid,
task->tk_msg.rpc_cred);
case -NFS4ERR_OLD_STATEID:
/* Fallthrough */
case -NFS4ERR_BAD_STATEID:
if (!nfs4_stateid_match(&calldata->arg.stateid,
&state->open_stateid)) {
@@ -3214,6 +3222,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
}
if (calldata->arg.fmode == 0)
break;
/* Fallthrough */
default:
if (nfs4_async_handle_error(task, server, state, NULL) == -EAGAIN) {
rpc_restart_call_prepare(task);
@@ -5793,11 +5802,19 @@ static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata)
nfs4_free_revoked_stateid(data->res.server,
data->args.stateid,
task->tk_msg.rpc_cred);
/* Fallthrough */
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_STALE_STATEID:
task->tk_status = 0;
break;
case -NFS4ERR_OLD_STATEID:
if (nfs4_refresh_delegation_stateid(&data->stateid, data->inode)) {
task->tk_status = 0;
rpc_restart_call_prepare(task);
return;
}
task->tk_status = 0;
break;
case -NFS4ERR_ACCESS:
if (data->args.bitmask) {
data->args.bitmask = NULL;