Currently zbud pages do not have any flags set so it is not possible to
identify them during migration or compaction.
Implement PageZbud() by comparing page->_mapcount to -127 to distinguish
pages allocated by zbud. Just like PageBuddy() is implemented.
Signed-off-by: Krzysztof Kozlowski
Currently zbud pages do not have any flags set so it is not possible to
identify them during migration or compaction.
Implement PageZbud() by comparing page-_mapcount to -127 to distinguish
pages allocated by zbud. Just like PageBuddy() is implemented.
Signed-off-by: Krzysztof Kozlowski
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