From: Matthew Dobson 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 Signed-off-by: Andrew Morton --- include/linux/mempool.h | 12 ++++++++++++ mm/mempool.c | 17 +++++++++++++++++ 2 files changed, 29 insertions(+) diff -puN include/linux/mempool.h~mempool-add-kmalloc-allocator include/linux/mempool.h --- 25/include/linux/mempool.h~mempool-add-kmalloc-allocator Tue Jan 31 16:42:41 2006 +++ 25-akpm/include/linux/mempool.h Tue Jan 31 16:42:41 2006 @@ -39,6 +39,18 @@ void *mempool_alloc_slab(gfp_t gfp_mask, 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 + */ +void *mempool_kmalloc(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); +} + +/* * A mempool_alloc_t and mempool_free_t for a simple page allocator that * allocates pages of the order specified by pool_data */ diff -puN mm/mempool.c~mempool-add-kmalloc-allocator mm/mempool.c --- 25/mm/mempool.c~mempool-add-kmalloc-allocator Tue Jan 31 16:42:41 2006 +++ 25-akpm/mm/mempool.c Tue Jan 31 16:42:41 2006 @@ -291,6 +291,23 @@ void mempool_free_slab(void *element, vo 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. */ _