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#ifndef __LINUX_PAGEISOLATION_H

#define __LINUX_PAGEISOLATION_H

/*

 * Changes migrate type in [start_pfn, end_pfn) to be MIGRATE_ISOLATE.

 * If specified range includes migrate types other than MOVABLE,

 * this will fail with -EBUSY.

 *

 * For isolating all pages in the range finally, the caller have to

 * free all pages in the range. test_page_isolated() can be used for

 * test it.

 */

extern int

start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn);

/*

 * Changes MIGRATE_ISOLATE to MIGRATE_MOVABLE.

 * target range is [start_pfn, end_pfn)

 */

extern int

undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn);

/*

 * test all pages in [start_pfn, end_pfn)are isolated or not.

 */

extern int

test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn);

/*

 * Internal funcs.Changes pageblock's migrate type.

 * Please use make_pagetype_isolated()/make_pagetype_movable().

 */

extern int set_migratetype_isolate(struct page *page);

extern void unset_migratetype_isolate(struct page *page);

#endif