[02/16] mm: use untagged_addr() for get_user_pages_fast addresses

Commit Message

Christoph Hellwig June 1, 2019, 7:49 a.m. UTC

This will allow sparc64 to override its ADI tags for
get_user_pages and get_user_pages_fast.

Signed-off-by: Christoph Hellwig <[e-mail]>
---
 mm/gup.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Patch

diff --git a/mm/gup.c b/mm/gup.c
index f173fcbaf1b2..9775f7675653 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -2145,7 +2145,7 @@  int __get_user_pages_fast(unsigned long start, int nr_pages, int write,
 	unsigned long flags;
 	int nr = 0;
 
-	start &= PAGE_MASK;
+	start = untagged_addr(start) & PAGE_MASK;
 	len = (unsigned long) nr_pages << PAGE_SHIFT;
 	end = start + len;
 
@@ -2218,7 +2218,7 @@  int get_user_pages_fast(unsigned long start, int nr_pages,
 	unsigned long addr, len, end;
 	int nr = 0, ret = 0;
 
-	start &= PAGE_MASK;
+	start = untagged_addr(start) & PAGE_MASK;
 	addr = start;
 	len = (unsigned long) nr_pages << PAGE_SHIFT;
 	end = start + len;