linux-kernel - [PATCH 6/9] staging: ion: Set minimum carveout heap allocation order to PAGE

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Date:	Fri, 29 Jan 2016 22:07:35 -0800
From:	John Stultz <john.stultz@...aro.org>
To:	lkml <linux-kernel@...r.kernel.org>
Cc:	Rajmal Menariya <rajmal.menariya@...eadtrum.com>,
	sprd-ind-kernel-group@...glegroups.com,
	sanjeev.yadav@...eadtrum.com, Colin Cross <ccross@...roid.com>,
	Android Kernel Team <kernel-team@...roid.com>,
	Greg KH <gregkh@...uxfoundation.org>,
	Laura Abbott <labbott@...hat.com>,
	Sumit Semwal <sumit.semwal@...aro.org>,
	John Stultz <john.stultz@...aro.org>
Subject: [PATCH 6/9] staging: ion: Set minimum carveout heap allocation order to PAGE_SHIFT

From: Rajmal Menariya <rajmal.menariya@...eadtrum.com>

In carveout heap, change minimum allocation order from 12 to
PAGE_SHIFT. After this change each bit in bitmap (genalloc -
General purpose special memory pool) represents one page size
memory.

Cc: sprd-ind-kernel-group@...glegroups.com
Cc: sanjeev.yadav@...eadtrum.com
Cc: Colin Cross <ccross@...roid.com>
Cc: Android Kernel Team <kernel-team@...roid.com>
Cc: Greg KH <gregkh@...uxfoundation.org>
Cc: Laura Abbott <labbott@...hat.com>
Cc: Sumit Semwal <sumit.semwal@...aro.org>
Signed-off-by: Rajmal Menariya <rajmal.menariya@...eadtrum.com>
[jstultz: Reworked commit message]
Signed-off-by: John Stultz <john.stultz@...aro.org>
---
 drivers/staging/android/ion/ion_carveout_heap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/android/ion/ion_carveout_heap.c b/drivers/staging/android/ion/ion_carveout_heap.c
index 9156d82..e702ce6 100644
--- a/drivers/staging/android/ion/ion_carveout_heap.c
+++ b/drivers/staging/android/ion/ion_carveout_heap.c
@@ -167,7 +167,7 @@ struct ion_heap *ion_carveout_heap_create(struct ion_platform_heap *heap_data)
 	if (!carveout_heap)
 		return ERR_PTR(-ENOMEM);
 
-	carveout_heap->pool = gen_pool_create(12, -1);
+	carveout_heap->pool = gen_pool_create(PAGE_SHIFT, -1);
 	if (!carveout_heap->pool) {
 		kfree(carveout_heap);
 		return ERR_PTR(-ENOMEM);
-- 
1.9.1