From f183323d3822dee4d7b3147a59b6e8987fe201e0 Mon Sep 17 00:00:00 2001 From: Matthew Dobson Date: Sun, 26 Mar 2006 01:37:48 -0800 Subject: [PATCH] [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 Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mempool.h | 10 ++++++++-- mm/mempool.c | 9 ++++++++- 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); -- 2.20.1