[Intel-gfx] [PATCH 1/2] mm: Handle prefault for size >= 2GB

[Sagar Arun Kamble]

From: "sagar.a.kamble at intel.com" <sagar.a.kamble at intel.com>

i915 gem_exec_reloc subtests *-31 exercise relocation entries object
that is of size >=2GB. This patch will allow prefaulting >=2GB size.

Cc: Daniel Vetter <daniel.vetter at ffwll.ch>
Cc: Chris Wilson <chris at chris-wilson.co.uk>
Signed-off-by: Sagar Arun Kamble <sagar.a.kamble at intel.com>
---
 include/linux/pagemap.h | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index 324c8dba..ec27ba2 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -538,7 +538,8 @@ static inline void wait_on_page_writeback(struct page *page)
 /*
  * Fault everything in given userspace address range in.
  */
-static inline int fault_in_pages_writeable(char __user *uaddr, int size)
+static inline int fault_in_pages_writeable(char __user *uaddr,
+					   unsigned long size)
 {
 	char __user *end = uaddr + size - 1;
 
@@ -565,7 +566,8 @@ static inline int fault_in_pages_writeable(char __user *uaddr, int size)
 	return 0;
 }
 
-static inline int fault_in_pages_readable(const char __user *uaddr, int size)
+static inline int fault_in_pages_readable(const char __user *uaddr,
+					  unsigned long size)
 {
 	volatile char c;
 	const char __user *end = uaddr + size - 1;
-- 
1.9.1