mm: Implement no-MMU variant of vmalloc_user_node_flags (ed81745a) · Commits · 戴 / test

To fix build with !CONFIG_MMU, implement it for no-MMU configurations as well. Fixes: ("bpf: Add mmap() support for BPF_MAP_TYPE_ARRAY") Reported-by:

mm/nommu.c

+13 −2

Original line number	Diff line number	Diff line
		@@ -155,11 +155,11 @@ void *__vmalloc_node_flags(unsigned long size, int node, gfp_t flags)
		return __vmalloc(size, flags, PAGE_KERNEL);
		}

		void *vmalloc_user(unsigned long size)
		static void *__vmalloc_user_flags(unsigned long size, gfp_t flags)
		{
		void *ret;

		ret = __vmalloc(size, GFP_KERNEL \| __GFP_ZERO, PAGE_KERNEL);
		ret = __vmalloc(size, flags, PAGE_KERNEL);
		if (ret) {
		struct vm_area_struct *vma;

		@@ -172,8 +172,19 @@ void *vmalloc_user(unsigned long size)

		return ret;
		}

		void *vmalloc_user(unsigned long size)
		{
		return __vmalloc_user_flags(size, GFP_KERNEL \| __GFP_ZERO);
		}
		EXPORT_SYMBOL(vmalloc_user);

		void *vmalloc_user_node_flags(unsigned long size, int node, gfp_t flags)
		{
		return __vmalloc_user_flags(size, flags \| __GFP_ZERO);
		}
		EXPORT_SYMBOL(vmalloc_user_node_flags);

		struct page vmalloc_to_page(const void addr)
		{
		return virt_to_page(addr);