[RFC PATCH 02/11] pagemap: add mapping_clear_large_folios() wrapper

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Add wrapper to clear mapping's large folio flag. This is handy for
disabling large folios on already existing inodes (e.g. future XFS
integration of fs-verity).

Signed-off-by: Andrey Albershteyn <aalbersh@xxxxxxxxxx>
---
 include/linux/pagemap.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index bbccb40442224..63ca600bdf8f7 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -306,6 +306,11 @@ static inline void mapping_set_large_folios(struct address_space *mapping)
 	__set_bit(AS_LARGE_FOLIO_SUPPORT, &mapping->flags);
 }
 
+static inline void mapping_clear_large_folios(struct address_space *mapping)
+{
+	__clear_bit(AS_LARGE_FOLIO_SUPPORT, &mapping->flags);
+}
+
 /*
  * Large folio support currently depends on THP.  These dependencies are
  * being worked on but are not yet fixed.
-- 
2.31.1




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