Commit 421f1ab4 authored by Matthew Wilcox (Oracle)'s avatar Matthew Wilcox (Oracle)
Browse files

mm: Make large folios depend on THP 



Some parts of the VM still depend on THP to handle large folios
correctly.  Until those are fixed, prevent creating large folios
if THP are disabled.

Signed-off-by: default avatarMatthew Wilcox (Oracle) <willy@infradead.org>
parent 06d44142

include/linux/pagemap.h

+6 −1
Original line number Diff line number Diff line
@@ -306,9 +306,14 @@ static inline void mapping_set_large_folios(struct address_space *mapping) 
	__set_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.

 */

static inline bool mapping_large_folio_support(struct address_space *mapping)

{

	return test_bit(AS_LARGE_FOLIO_SUPPORT, &mapping->flags);

	return IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE) &&

		test_bit(AS_LARGE_FOLIO_SUPPORT, &mapping->flags);

}



static inline int filemap_nr_thps(struct address_space *mapping)