The recent patches to add support for hugepage vmalloc mappings added a flag for __vmalloc_node_range to allow to request small pages. This flag is not accessible when calling vmalloc, the only option is to call directly __vmalloc_node_range, which is not exported. This means that a module can't vmalloc memory with small pages. Case in point: KVM on s390x needs to vmalloc a large area, and it needs to be mapped with small pages, because of a hardware limitation. This patch exports __vmalloc_node_range so it can be used in modules too. Signed-off-by: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Cc: Nicholas Piggin <npiggin@xxxxxxxxx> Cc: Uladzislau Rezki (Sony) <urezki@xxxxxxxxx> Cc: Catalin Marinas <catalin.marinas@xxxxxxx> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Cc: Ingo Molnar <mingo@xxxxxxxxxx> Cc: David Rientjes <rientjes@xxxxxxxxxx> --- mm/vmalloc.c | 1 + 1 file changed, 1 insertion(+) diff --git a/mm/vmalloc.c b/mm/vmalloc.c index a13ac524f6ff..bd6fa160b31b 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -2937,6 +2937,7 @@ void *__vmalloc_node_range(unsigned long size, unsigned long align, return NULL; } +EXPORT_SYMBOL_GPL(__vmalloc_node_range); /** * __vmalloc_node - allocate virtually contiguous memory -- 2.31.1
