[PATCH 3.18 17/50] staging: ion: Set minimum carveout heap allocation order to PAGE_SHIFT

[Greg Kroah-Hartman]

3.18-stable review patch.  If anyone has any objections, please let me know.

------------------

[ Upstream commit 1328d8efef17d5e16bd6e9cfe59130a833674534 ]

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@xxxxxxxxxxxxxxxx
Cc: sanjeev.yadav@xxxxxxxxxxxxxx
Cc: Colin Cross <ccross@xxxxxxxxxxx>
Cc: Android Kernel Team <kernel-team@xxxxxxxxxxx>
Cc: Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Sumit Semwal <sumit.semwal@xxxxxxxxxx>
Signed-off-by: Rajmal Menariya <rajmal.menariya@xxxxxxxxxxxxxx>
[jstultz: Reworked commit message]
Signed-off-by: John Stultz <john.stultz@xxxxxxxxxx>
Acked-by: Laura Abbott <labbott@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 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 9156d8238c97..e702ce6461fc 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);
-- 
2.19.1