[PATCH 4/4] Staging: android: binder: Allow using highmem for binder buffers

["Arve Hjønnevåg" <arve@android.com>]

The default kernel mapping for the pages allocated for the binder
buffers is never used. Set the __GFP_HIGHMEM flag when allocating
these pages so we don't needlessly use low memory pages that may
be required elsewhere.

Signed-off-by: Arve Hjønnevåg <arve@android.com>
---
 drivers/staging/android/binder.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/staging/android/binder.c b/drivers/staging/android/binder.c
index 91ce956..9fbc06e 100644
--- a/drivers/staging/android/binder.c
+++ b/drivers/staging/android/binder.c
@@ -583,7 +583,7 @@ static int binder_update_page_range(struct binder_proc *proc, int allocate,
 		page = &proc->pages[(page_addr - proc->buffer) / PAGE_SIZE];
 
 		BUG_ON(*page);
-		*page = alloc_page(GFP_KERNEL | __GFP_ZERO);
+		*page = alloc_page(GFP_KERNEL | __GFP_HIGHMEM | __GFP_ZERO);
 		if (*page == NULL) {
 			pr_err("binder: %d: binder_alloc_buf failed "
 			       "for page at %p\n", proc->pid, page_addr);
-- 
1.7.7.3