We need it to amke a memory pool for 4M (10-th order) allocations. Due to big allocation size it seems prudent to do it via vmalloc interface.
https://virtuozzo.atlassian.net/browse/VSTOR-94596 Signed-off-by: Pavel Tikhomirov <ptikhomi...@virtuozzo.com> --- include/linux/mempool.h | 15 +++++++++++++++ mm/mempool.c | 13 +++++++++++++ 2 files changed, 28 insertions(+) diff --git a/include/linux/mempool.h b/include/linux/mempool.h index 7bd58a0f6bb05..6b7ef339d4881 100644 --- a/include/linux/mempool.h +++ b/include/linux/mempool.h @@ -97,6 +97,21 @@ static inline mempool_t *mempool_create_kmalloc_pool(int min_nr, size_t size) (void *) size); } +void *mempool_kvmalloc(gfp_t gfp_mask, void *pool_data); +void mempool_kvfree(void *element, void *pool_data); + +static inline int mempool_init_kvmalloc_pool(mempool_t *pool, int min_nr, size_t size) +{ + return mempool_init(pool, min_nr, mempool_kvmalloc, + mempool_kvfree, (void *) size); +} + +static inline mempool_t *mempool_create_kvmalloc_pool(int min_nr, size_t size) +{ + return mempool_create(min_nr, mempool_kvmalloc, mempool_kvfree, + (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 --git a/mm/mempool.c b/mm/mempool.c index 9da0cd72bd190..06be37a711d9b 100644 --- a/mm/mempool.c +++ b/mm/mempool.c @@ -539,6 +539,19 @@ void mempool_kfree(void *element, void *pool_data) } EXPORT_SYMBOL(mempool_kfree); +void *mempool_kvmalloc(gfp_t gfp_mask, void *pool_data) +{ + size_t size = (size_t)pool_data; + return kvmalloc(size, gfp_mask); +} +EXPORT_SYMBOL(mempool_kvmalloc); + +void mempool_kvfree(void *element, void *pool_data) +{ + kvfree(element); +} +EXPORT_SYMBOL(mempool_kvfree); + /* * A simple mempool-backed page allocator that allocates pages * of the order specified by pool_data. -- 2.47.0 _______________________________________________ Devel mailing list Devel@openvz.org https://lists.openvz.org/mailman/listinfo/devel
