linux-master/mm/ksm.c

3057 	struct folio *new_folio;
3077 	new_folio = vma_alloc_folio(GFP_HIGHUSER_MOVABLE, 0, vma, addr, false);
3078 	if (new_folio &&
3079 	    mem_cgroup_charge(new_folio, vma->vm_mm, GFP_KERNEL)) {
3080 		folio_put(new_folio);
3081 		new_folio = NULL;
3083 	if (new_folio) {
3084 		if (copy_mc_user_highpage(folio_page(new_folio, 0), page,
3086 			folio_put(new_folio);
3090 		folio_set_dirty(new_folio);
3091 		__folio_mark_uptodate(new_folio);
3092 		__folio_set_locked(new_folio);
3098 	return new_folio;