diff options
Diffstat (limited to 'include/linux/huge_mm.h')
| -rw-r--r-- | include/linux/huge_mm.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index 61c9ffd89b05..93d5cf0bc716 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -108,7 +108,12 @@ static inline bool __transparent_hugepage_enabled(struct vm_area_struct *vma) if (transparent_hugepage_flags & (1 << TRANSPARENT_HUGEPAGE_FLAG)) return true; - + /* + * For dax vmas, try to always use hugepage mappings. If the kernel does + * not support hugepages, fsdax mappings will fallback to PAGE_SIZE + * mappings, and device-dax namespaces, that try to guarantee a given + * mapping size, will fail to enable + */ if (vma_is_dax(vma)) return true; |