static struct page *alloc_buffer_page(struct ion_system_heap *heap,
struct ion_buffer *buffer,
unsigned long order,
bool *from_pool)
{
bool cached = ion_buffer_cached(buffer);
bool split_pages = ion_buffer_fault_user_mappings(buffer);
struct page *page;
struct ion_page_pool *pool;
if (!cached)
pool = heap->uncached_pools[order_to_index(order)];
else
pool = heap->cached_pools[order_to_index(order)];
page = ion_page_pool_alloc(pool, from_pool);
if (!page)
return 0;
if (split_pages)
split_page(page, order);
return page;
}
static struct page *alloc_buffer_page(struct ion_system_heap *heap,
struct ion_buffer *buffer,
unsigned long order)
{
bool cached = ion_buffer_cached(buffer);
struct ion_page_pool *pool = heap->pools[order_to_index(order)];
struct page *page;
if (!cached) {
page = ion_page_pool_alloc(pool);
} else {
gfp_t gfp_flags = low_order_gfp_flags;
if (order > 4)
gfp_flags = high_order_gfp_flags;
page = alloc_pages(gfp_flags, order);
}
if (!page)
return NULL;
return page;
}