NFSv4: Clear the NFS_CAP_FS_LOCATIONS flag if it is not set

[ Upstream commit dd5a862 ]

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

Fixes: 8a59bb9 ("NFSv4 store server support for fs_location attribute")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

Author: Trond Myklebust

fs/nfs/nfs4proc.c

@@ -3882,8 +3882,9 @@ 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)