[PATCH] mempool: add kmalloc allocator
Add another allocator to the common mempool code: a kmalloc/kfree allocator
This will be used by the next patch in the series to replace duplicate
mempool-backed kmalloc allocators in several places in the kernel. It is also
very likely that there will be more users in the future.
Signed-off-by: Matthew Dobson <colpatch@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/mm/mempool.c b/mm/mempool.c
index 45c0112..a1397c6 100644
--- a/mm/mempool.c
+++ b/mm/mempool.c
@@ -291,6 +291,23 @@
EXPORT_SYMBOL(mempool_free_slab);
/*
+ * A commonly used alloc and free fn that kmalloc/kfrees the amount of memory
+ * specfied by pool_data
+ */
+void *mempool_kmalloc(gfp_t gfp_mask, void *pool_data)
+{
+ size_t size = (size_t) pool_data;
+ return kmalloc(size, gfp_mask);
+}
+EXPORT_SYMBOL(mempool_kmalloc);
+
+void mempool_kfree(void *element, void *pool_data)
+{
+ kfree(element);
+}
+EXPORT_SYMBOL(mempool_kfree);
+
+/*
* A simple mempool-backed page allocator that allocates pages
* of the order specified by pool_data.
*/