group_page_trylock
if (!group_page_trylock(rootpp, se)) {
if (!group_page_trylock(pp,
if (!group_page_trylock(pp, SE_EXCL)) {
int group_page_trylock(page_t *, se_t);
if (pszc != 0 && !group_page_trylock(pp, SE_EXCL)) {
if (grouplock != 0 && !group_page_trylock(targ, SE_EXCL)) {