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Commit 4ba1119c authored by Matthew Wilcox (Oracle)'s avatar Matthew Wilcox (Oracle)
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mm: Add folio_mapcount()



This implements the same algorithm as total_mapcount(), which is
transformed into a wrapper function.

Signed-off-by: default avatarMatthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
parent 74e8ee47
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