NFS_CAP_ACLS
server->caps &= ~NFS_CAP_ACLS;
if (!nfs_server_capable(inode, NFS_CAP_ACLS))
server->caps &= ~NFS_CAP_ACLS;
if (!nfs_server_capable(inode, NFS_CAP_ACLS))
server->caps |= NFS_CAP_ACLS;
server->caps &= ~NFS_CAP_ACLS;
server->caps &= ~NFS_CAP_ACLS;
~(NFS_CAP_ACLS | NFS_CAP_HARDLINKS | NFS_CAP_SYMLINKS |
server->caps |= NFS_CAP_ACLS;