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38 lines
1.0 KiB
C
38 lines
1.0 KiB
C
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#ifndef __LINUX_PAGEISOLATION_H
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#define __LINUX_PAGEISOLATION_H
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/*
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* Changes migrate type in [start_pfn, end_pfn) to be MIGRATE_ISOLATE.
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* If specified range includes migrate types other than MOVABLE,
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* this will fail with -EBUSY.
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*
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* For isolating all pages in the range finally, the caller have to
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* free all pages in the range. test_page_isolated() can be used for
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* test it.
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*/
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extern int
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start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn);
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/*
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* Changes MIGRATE_ISOLATE to MIGRATE_MOVABLE.
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* target range is [start_pfn, end_pfn)
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*/
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extern int
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undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn);
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/*
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* test all pages in [start_pfn, end_pfn)are isolated or not.
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*/
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extern int
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test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn);
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/*
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* Internal funcs.Changes pageblock's migrate type.
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* Please use make_pagetype_isolated()/make_pagetype_movable().
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*/
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extern int set_migratetype_isolate(struct page *page);
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extern void unset_migratetype_isolate(struct page *page);
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#endif
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