diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/huge_mm.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index 609c153bae57..fa7a38a30fc6 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -68,9 +68,11 @@ extern struct kobj_attribute shmem_enabled_attr; #define HPAGE_PMD_NR (1<<HPAGE_PMD_ORDER) /* - * Mask of all large folio orders supported for anonymous THP. + * Mask of all large folio orders supported for anonymous THP; all orders up to + * and including PMD_ORDER, except order-0 (which is not "huge") and order-1 + * (which is a limitation of the THP implementation). */ -#define THP_ORDERS_ALL_ANON BIT(PMD_ORDER) +#define THP_ORDERS_ALL_ANON ((BIT(PMD_ORDER + 1) - 1) & ~(BIT(0) | BIT(1))) /* * Mask of all large folio orders supported for file THP. |