From: Trond Myklebust <trond.myklebust@primarydata.com>
Date: Mon, 17 Jun 2024 01:21:34 +0000 (-0400)
Subject: NFSv4: Add support for OPEN4_RESULT_NO_OPEN_STATEID
X-Git-Tag: v6.11-rc1~121^2~36
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1f0a6b3fa7a9405b74516611afa005075a21e810;p=thirdparty%2Fkernel%2Fstable.git

NFSv4: Add support for OPEN4_RESULT_NO_OPEN_STATEID

If the server returns a delegation stateid only, then don't try to set
an open stateid.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Lance Shelton <lance.shelton@hammerspace.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
---

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index adf4fc8610f6e..5b18aac0b34a5 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -2035,8 +2035,11 @@ _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data)
 				data->o_arg.claim,
 				&data->o_res.delegation);
 
-	if (!update_open_stateid(state, &data->o_res.stateid,
-				NULL, data->o_arg.fmode))
+	if (!(data->o_res.rflags & NFS4_OPEN_RESULT_NO_OPEN_STATEID)) {
+		if (!update_open_stateid(state, &data->o_res.stateid,
+					 NULL, data->o_arg.fmode))
+			return ERR_PTR(-EAGAIN);
+	} else if (!update_open_stateid(state, NULL, NULL, data->o_arg.fmode))
 		return ERR_PTR(-EAGAIN);
 	refcount_inc(&state->count);
 
@@ -2105,8 +2108,13 @@ _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data)
 				data->o_arg.claim,
 				&data->o_res.delegation);
 
-	if (!update_open_stateid(state, &data->o_res.stateid,
-				NULL, data->o_arg.fmode)) {
+	if (!(data->o_res.rflags & NFS4_OPEN_RESULT_NO_OPEN_STATEID)) {
+		if (!update_open_stateid(state, &data->o_res.stateid,
+					 NULL, data->o_arg.fmode)) {
+			nfs4_put_open_state(state);
+			state = ERR_PTR(-EAGAIN);
+		}
+	} else if (!update_open_stateid(state, NULL, NULL, data->o_arg.fmode)) {
 		nfs4_put_open_state(state);
 		state = ERR_PTR(-EAGAIN);
 	}