From: Arve Hjønnevåg <arve@android.com>
Date: Tue, 16 Oct 2012 22:29:55 +0000 (-0700)
Subject: Staging: android: binder: Allow using highmem for binder buffers
X-Git-Tag: firefly_0821_release~3680^2~1713^2~10
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=585650dcec88e704a19bb226a34b6a7166111623;p=firefly-linux-kernel-4.4.55.git

Staging: android: binder: Allow using highmem for binder buffers

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>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/android/binder.c b/drivers/staging/android/binder.c
index db6c4c5c2551..5d4610babd8a 100644
--- a/drivers/staging/android/binder.c
+++ b/drivers/staging/android/binder.c
@@ -567,7 +567,7 @@ 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);