nfs_have_writebacks
if (nfs_have_writebacks(inode))
nfs_have_writebacks(inode))
WARN_ON_ONCE(nfs_have_writebacks(inode));
&& !nfs_have_writebacks(inode)) {
if (!nfs_have_writebacks(inode) || new_isize > cur_isize) {
!nfs_have_writebacks(inode) && NFS_MAXATTRTIMEO(inode) > 5 * HZ;