linux-kernel - [PATCH 5.10] NFSv4: Clear the NFS_CAP_XATTR flag if not supported by the server

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Message-ID: <20250925130211.76431-1-siddh.raman.pant@oracle.com>
Date: Thu, 25 Sep 2025 18:32:11 +0530
From: Siddh Raman Pant <siddh.raman.pant@...cle.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org, stable@...nel.org
Cc: Trond Myklebust <trond.myklebust@...merspace.com>
Subject: [PATCH 5.10] NFSv4: Clear the NFS_CAP_XATTR flag if not supported by the server

From: Trond Myklebust <trond.myklebust@...merspace.com>

nfs_server_set_fsinfo() shouldn't assume that NFS_CAP_XATTR is unset
on entry to the function.

Fixes: b78ef845c35d ("NFSv4.2: query the server for extended attribute support")
Signed-off-by: Trond Myklebust <trond.myklebust@...merspace.com>
(cherry picked from commit 4fb2b677fc1f70ee642c0beecc3cabf226ef5707)
Signed-off-by: Siddh Raman Pant <siddh.raman.pant@...cle.com>
---
 fs/nfs/client.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index ac2fbbba1521..6134101184fa 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -850,6 +850,8 @@ static void nfs_server_set_fsinfo(struct nfs_server *server,
 
 	if (fsinfo->xattr_support)
 		server->caps |= NFS_CAP_XATTR;
+	else
+		server->caps &= ~NFS_CAP_XATTR;
 #endif
 }
 
-- 
2.51.0