void pm_put_page(struct page *page);
void pm_add_vmr(struct page_map *pm, struct vm_region *vmr);
void pm_remove_vmr(struct page_map *pm, struct vm_region *vmr);
-int pm_remove_contig(struct page_map *pm, unsigned long index,
- unsigned long nr_pgs);
void pm_remove_or_zero_pages(struct page_map *pm, unsigned long start_idx,
unsigned long nr_pgs);
void pm_writeback_pages(struct page_map *pm);