---

yaml --- r: 24072 b: refs/heads/master c: 6e0678f h: refs/heads/master v: v3
git-mirror · Mar 26, 2006 · 40eeb51 · 40eeb51
1 parent 8f8efd7
commit 40eeb51
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Showing 3 changed files with 31 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 8219dd5710c1daec2d7a086eeeee5187decfde60
+refs/heads/master: 6e0678f394c7bd21bfa5d252b071a09e10e7a749
diff --git a/trunk/include/linux/mempool.h b/trunk/include/linux/mempool.h
@@ -38,4 +38,16 @@ extern void mempool_free(void *element, mempool_t *pool);
 void *mempool_alloc_slab(gfp_t gfp_mask, void *pool_data);
 void mempool_free_slab(void *element, void *pool_data);
 
+/*
+ * A mempool_alloc_t and mempool_free_t for a simple page allocator that
+ * allocates pages of the order specified by pool_data
+ */
+void *mempool_alloc_pages(gfp_t gfp_mask, void *pool_data);
+void mempool_free_pages(void *element, void *pool_data);
+static inline mempool_t *mempool_create_page_pool(int min_nr, int order)
+{
+	return mempool_create(min_nr, mempool_alloc_pages, mempool_free_pages,
+			      (void *)(long)order);
+}
+
 #endif /* _LINUX_MEMPOOL_H */
diff --git a/trunk/mm/mempool.c b/trunk/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);