The call to can_split_folio() in vmscan is currently guarded by a test
of PageTransHuge() so the BUILD_BUG() is eliminated if THP are disabled.
The next patch replaces that test with folio_test_large() which may
be true, even when THP are disabled. However, if THP are disabled,
we cannot split, so an unconditional return of false is appropriate.
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
---
include/linux/huge_mm.h | 1 -
1 file changed, 1 deletion(-)
diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
index 2999190adc22..e9e0d591061d 100644
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@ -347,7 +347,6 @@ static inline void prep_transhuge_page(struct page *page) {}
static inline bool
can_split_folio(struct folio *folio, int *pextra_pins)
{
- BUILD_BUG();
return false;
}
static inline int
--
2.34.1
