From patchwork Mon Nov 26 16:58:15 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: [205/270] Staging: android: binder: Allow using highmem for binder buffers From: Herton Ronaldo Krzesinski X-Patchwork-Id: 201937 Message-Id: <1353949160-26803-206-git-send-email-herton.krzesinski@canonical.com> To: linux-kernel@vger.kernel.org, stable@vger.kernel.org, kernel-team@lists.ubuntu.com Cc: Greg Kroah-Hartman , =?UTF-8?q?Arve=20Hj=C3=B8nnev=C3=A5g?= Date: Mon, 26 Nov 2012 14:58:15 -0200 3.5.7u1 -stable review patch. If anyone has any objections, please let me know. ------------------ From: =?UTF-8?q?Arve=20Hj=C3=B8nnev=C3=A5g?= commit 585650dcec88e704a19bb226a34b6a7166111623 upstream. 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 Signed-off-by: Greg Kroah-Hartman Signed-off-by: Herton Ronaldo Krzesinski --- drivers/staging/android/binder.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/android/binder.c b/drivers/staging/android/binder.c index 80acd0e..223639a 100644 --- a/drivers/staging/android/binder.c +++ b/drivers/staging/android/binder.c @@ -655,7 +655,7 @@ 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) { printk(KERN_ERR "binder: %d: binder_alloc_buf failed " "for page at %p\n", proc->pid, page_addr);