linux/mm/page_ext.c

33  * is the need callback which is mandatory if user wants to avoid useless
37  * The need callback is used to decide whether extended memory allocation is
40  * allocating huge chunk of memory, each clients represent their need of
41  * extra memory through the need callback. If one of the need callbacks
44  * none of need callbacks return true, memory isn't needed at all in this boot
48  * When need callback returns true, page_ext checks if there is a request for
73 	.need = need_page_idle,
106 	bool need = false;  in invoke_need_callbacks()  local
109 		if (page_ext_ops[i]->need()) {  in invoke_need_callbacks()
118 		if (page_ext_ops[i]->need()) {  in invoke_need_callbacks()
121 			need = true;  in invoke_need_callbacks()
125 	return need;  in invoke_need_callbacks()
187 	 * Need extra space if node range is not aligned with  in alloc_node_page_ext()
296 	 * we need to apply a mask.  in init_section_page_ext()