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mm: Implement no-MMU variant of vmalloc_user_node_flags 

To fix build with !CONFIG_MMU, implement it for no-MMU configurations as well.

Fixes: fc9702273e ("bpf: Add mmap() support for BPF_MAP_TYPE_ARRAY")
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20191123220835.1237773-1-andriin@fb.com
This commit is contained in:
Andrii Nakryiko 2019-11-23 14:08:35 -08:00 committed by Alexei Starovoitov
parent c431047c4e
commit ed81745a4c
1 changed files with 13 additions and 2 deletions
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15
mm/nommu.c
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@ -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);