[PATCH] slab: introduce kmem_cache_zalloc allocator

Introduce a memory-zeroing variant of kmem_cache_alloc.  The allocator
already exits in XFS and there are potential users for it so this patch
makes the allocator available for the general public.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/slab.h b/include/linux/slab.h
index f88e08a5802c..1216b09e07b1 100644
--- a/include/linux/slab.h
+++ b/include/linux/slab.h
@@ -64,6 +64,7 @@ extern kmem_cache_t *kmem_cache_create(const char *, size_t, size_t, unsigned lo
 extern int kmem_cache_destroy(kmem_cache_t *);
 extern int kmem_cache_shrink(kmem_cache_t *);
 extern void *kmem_cache_alloc(kmem_cache_t *, gfp_t);
+extern void *kmem_cache_zalloc(struct kmem_cache *, gfp_t);
 extern void kmem_cache_free(kmem_cache_t *, void *);
 extern unsigned int kmem_cache_size(kmem_cache_t *);
 extern const char *kmem_cache_name(kmem_cache_t *);
@@ -156,6 +157,7 @@ struct kmem_cache *kmem_cache_create(const char *c, size_t, size_t,
         void (*)(void *, struct kmem_cache *, unsigned long));
 int kmem_cache_destroy(struct kmem_cache *c);
 void *kmem_cache_alloc(struct kmem_cache *c, gfp_t flags);
+void *kmem_cache_zalloc(struct kmem_cache *, gfp_t);
 void kmem_cache_free(struct kmem_cache *c, void *b);
 const char *kmem_cache_name(struct kmem_cache *);
 void *kmalloc(size_t size, gfp_t flags);