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由 Matthew Wilcox (Oracle) 提交于
This shrinks filemap_free_folio() by 55 bytes in my .config; 24 bytes from removing the VM_BUG_ON_FOLIO() and 31 bytes from unifying the small/large folio paths. We could just use folio_ref_sub() here since the caller should hold a reference (as the VM_BUG_ON_FOLIO() was asserting), but that's fragile. Signed-off-by: NMatthew Wilcox (Oracle) <willy@infradead.org>
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