68 	 * Clear the LRU lists so pages can be isolated.  in migrate_prep()
110 	 * As movable pages are not isolated from LRU lists, concurrent  in isolate_movable_page()
114 	 * In order to avoid having an already isolated movable page  in isolate_movable_page()
115 	 * being (wrongly) re-isolated while it is under migration,  in isolate_movable_page()
162  * Put previously isolated pages back onto the appropriate lists
165  * This function shall be used whenever the isolated pageset has been
181 		 * We isolated non-lru movable page so here we can use  in putback_movable_pages()
1149 	 * list in here. Use the old state of the isolated source page to  in __unmap_and_move()
1616  *     errno - if the page cannot be found/isolated
1678 	 * not isolated.  in add_page_for_migration()
2040 	 * has been isolated: a GUP pin, or any other pin, prevents migration.  in numamigrate_isolate_page()
2077 	int isolated;  in migrate_misplaced_page()  local
2096 	isolated = numamigrate_isolate_page(pgdat, page);  in migrate_misplaced_page()
2097 	if (!isolated)  in migrate_misplaced_page()
2111 		isolated = 0;  in migrate_misplaced_page()
2115 	return isolated;  in migrate_misplaced_page()
2136 	int isolated = 0;  in migrate_misplaced_transhuge_page()  local
2148 	isolated = numamigrate_isolate_page(pgdat, page);  in migrate_misplaced_transhuge_page()
2149 	if (!isolated) {  in migrate_misplaced_transhuge_page()
2238 	return isolated;  in migrate_misplaced_transhuge_page()
2575  * page is locked it is isolated from the lru (for non-device pages). Finally,