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authorMatthew Dobson <colpatch@us.ibm.com>2006-03-26 01:37:48 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-26 08:56:59 -0800
commitf183323d3822dee4d7b3147a59b6e8987fe201e0 (patch)
treef1cec982da7ae954af52584630c273976fd43127
parent0eaae62abaa1ad1f231932b6cdd9fb1b91df6651 (diff)
[PATCH] mempool: add kzalloc allocator
Add another allocator to the common mempool code: a kzalloc/kfree allocator This will be used by the next patch in the series to replace a mempool-backed kzalloc allocator. 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>
-rw-r--r--include/linux/mempool.h10
-rw-r--r--mm/mempool.c9
2 files changed, 16 insertions, 3 deletions
diff --git a/include/linux/mempool.h b/include/linux/mempool.h
index d23dbf076b5..41570ce353e 100644
--- a/include/linux/mempool.h
+++ b/include/linux/mempool.h
@@ -39,16 +39,22 @@ 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 to kmalloc the amount of memory
- * specified by pool_data
+ * 2 mempool_alloc_t's and a mempool_free_t to kmalloc/kzalloc and kfree
+ * the amount of memory specified by pool_data
*/
void *mempool_kmalloc(gfp_t gfp_mask, void *pool_data);
+void *mempool_kzalloc(gfp_t gfp_mask, void *pool_data);
void mempool_kfree(void *element, void *pool_data);
static inline mempool_t *mempool_create_kmalloc_pool(int min_nr, size_t size)
{
return mempool_create(min_nr, mempool_kmalloc, mempool_kfree,
(void *) size);
}
+static inline mempool_t *mempool_create_kzalloc_pool(int min_nr, size_t size)
+{
+ return mempool_create(min_nr, mempool_kzalloc, mempool_kfree,
+ (void *) size);
+}
/*
* A mempool_alloc_t and mempool_free_t for a simple page allocator that
diff --git a/mm/mempool.c b/mm/mempool.c
index a1397c6a486..7bf064e6a34 100644
--- a/mm/mempool.c
+++ b/mm/mempool.c
@@ -296,11 +296,18 @@ EXPORT_SYMBOL(mempool_free_slab);
*/
void *mempool_kmalloc(gfp_t gfp_mask, void *pool_data)
{
- size_t size = (size_t) pool_data;
+ size_t size = (size_t)(long)pool_data;
return kmalloc(size, gfp_mask);
}
EXPORT_SYMBOL(mempool_kmalloc);
+void *mempool_kzalloc(gfp_t gfp_mask, void *pool_data)
+{
+ size_t size = (size_t) pool_data;
+ return kzalloc(size, gfp_mask);
+}
+EXPORT_SYMBOL(mempool_kzalloc);
+
void mempool_kfree(void *element, void *pool_data)
{
kfree(element);