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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