linux/include/linux/page-isolation.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __LINUX_PAGEISOLATION_H
#define __LINUX_PAGEISOLATION_H

#ifdef CONFIG_MEMORY_ISOLATION
static inline bool has_isolate_pageblock(struct zone *zone)
{ … }
static inline bool is_migrate_isolate_page(struct page *page)
{ … }
static inline bool is_migrate_isolate(int migratetype)
{ … }
#else
static inline bool has_isolate_pageblock(struct zone *zone)
{
	return false;
}
static inline bool is_migrate_isolate_page(struct page *page)
{
	return false;
}
static inline bool is_migrate_isolate(int migratetype)
{
	return false;
}
#endif

#define MEMORY_OFFLINE …
#define REPORT_FAILURE …

void set_pageblock_migratetype(struct page *page, int migratetype);

bool move_freepages_block_isolate(struct zone *zone, struct page *page,
				  int migratetype);

int start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
			     int migratetype, int flags, gfp_t gfp_flags);

void undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
			     int migratetype);

int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn,
			int isol_flags);
#endif