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author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
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committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /include/linux/page-isolation.h | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'include/linux/page-isolation.h')
-rw-r--r-- | include/linux/page-isolation.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/include/linux/page-isolation.h b/include/linux/page-isolation.h new file mode 100644 index 00000000..051c1b1e --- /dev/null +++ b/include/linux/page-isolation.h @@ -0,0 +1,37 @@ +#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 |