From: Trond Myklebust <trond.myklebust@primarydata.com>
Date: Mon, 17 Jun 2024 01:21:28 +0000 (-0400)
Subject: NFSv4: Enable attribute delegations
X-Git-Tag: v6.11-rc1~121^2~42
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=e3e9d44de13f91fae4565c7d6dfc7ec3eb03b108;p=thirdparty%2Fkernel%2Flinux.git

NFSv4: Enable attribute delegations

If we see that the server supports attribute delegations, then request
them by setting the appropriate OPEN arguments.

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 03835c8a180f5..1209ce22158ed 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -1339,8 +1339,13 @@ nfs4_map_atomic_open_share(struct nfs_server *server,
 	if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1))
 		goto out;
 	/* Want no delegation if we're using O_DIRECT */
-	if (openflags & O_DIRECT)
+	if (openflags & O_DIRECT) {
 		res |= NFS4_SHARE_WANT_NO_DELEG;
+		goto out;
+	}
+	/* res |= NFS4_SHARE_WANT_NO_PREFERENCE; */
+	if (server->caps & NFS_CAP_DELEGTIME)
+		res |= NFS4_SHARE_WANT_DELEG_TIMESTAMPS;
 out:
 	return res;
 }