linux-kernel - [PATCH 5.15 1/3] NFSv4: Clear the NFS_CAP_FS

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Message-ID: <1d4bbe4e9b6e6909067d8d5ab704e5392ec42bff.1758805195.git.siddh.raman.pant@oracle.com>
Date: Thu, 25 Sep 2025 18:31:44 +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 5.15 1/3] NFSv4: Clear the NFS_CAP_FS_LOCATIONS flag if it is not set

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

_nfs4_server_capabilities() is expected to clear any flags that are not
supported by the server.

Fixes: 8a59bb93b7e3 ("NFSv4 store server support for fs_location attribute")
Signed-off-by: Trond Myklebust <trond.myklebust@...merspace.com>
(cherry picked from commit dd5a8621b886b02f8341c5d4ea68eb2c552ebd3e)
Signed-off-by: Siddh Raman Pant <siddh.raman.pant@...cle.com>
---
 fs/nfs/nfs4proc.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 65dae25d6856..3d854e2537bc 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -3904,8 +3904,9 @@ static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *f
 			res.attr_bitmask[2] &= FATTR4_WORD2_NFS42_MASK;
 		}
 		memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask));
-		server->caps &= ~(NFS_CAP_ACLS | NFS_CAP_HARDLINKS |
-				  NFS_CAP_SYMLINKS| NFS_CAP_SECURITY_LABEL);
+		server->caps &=
+			~(NFS_CAP_ACLS | NFS_CAP_HARDLINKS | NFS_CAP_SYMLINKS |
+			  NFS_CAP_SECURITY_LABEL | NFS_CAP_FS_LOCATIONS);
 		server->fattr_valid = NFS_ATTR_FATTR_V4;
 		if (res.attr_bitmask[0] & FATTR4_WORD0_ACL &&
 				res.acl_bitmask & ACL4_SUPPORT_ALLOW_ACL)
-- 
2.51.0