[PATCH 14/15] mm: Align THP mappings for non-DAX

Matthew Wilcox
2019-09-25T00:53:38Z

From: William Kucharski <william.kucharski@oracle.com>

When we have the opportunity to use transparent huge pages to map a
file, we want to follow the same rules as DAX.

Signed-off-by: William Kucharski <william.kucharski@oracle.com>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---
mm/huge_memory.c | 2 --
1 file changed, 2 deletions(-)

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index cbe7d0619439..670a1780bd2f 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -563,8 +563,6 @@ unsigned long thp_get_unmapped_area(struct file *filp, unsigned long addr,

if (addr)
goto out;
- if (!IS_DAX(filp->f_mapping->host) || !IS_ENABLED(CONFIG_FS_DAX_PMD))
- goto out;

addr = __thp_get_unmapped_area(filp, len, off, flags, PMD_SIZE);
if (addr)
--
2.23.0