[PATCH] mempool: add page allocator

[mv-sheeva.git] / mm / mempool.c

diff --git a/mm/mempool.c b/mm/mempool.c
index f71893ed354358fcf2c6dcfc576a7a7730852cc6..45c0112ca7b24903302c6d746c543a45bea599b4 100644 (file)
--- a/mm/mempool.c
+++ b/mm/mempool.c
@@ -289,3 +289,21 @@ void mempool_free_slab(void *element, void *pool_data)
        kmem_cache_free(mem, element);
 }
 EXPORT_SYMBOL(mempool_free_slab);
+
+/*
+ * A simple mempool-backed page allocator that allocates pages
+ * of the order specified by pool_data.
+ */
+void *mempool_alloc_pages(gfp_t gfp_mask, void *pool_data)
+{
+       int order = (int)(long)pool_data;
+       return alloc_pages(gfp_mask, order);
+}
+EXPORT_SYMBOL(mempool_alloc_pages);
+
+void mempool_free_pages(void *element, void *pool_data)
+{
+       int order = (int)(long)pool_data;
+       __free_pages(element, order);
+}
+EXPORT_SYMBOL(mempool_free_pages);