Subject: Re: [PATCH 0/6 v3] kvmalloc

From: Joe Perches <[email-masked]>
Date: Thu, 26 Jan 2017 04:14:37 -0800

On Thu, 2017-01-26 at 11:32 +0100, Michal Hocko wrote:
> So I have folded the following to the patch 1. It is in line with
> kvmalloc and hopefully at least tell more than the current code.
[]
> diff --git a/mm/vmalloc.c b/mm/vmalloc.c
[]
> @@ -1741,6 +1741,13 @@ void *__vmalloc_node_range(unsigned long size, unsigned long align,
>   *	Allocate enough pages to cover @size from the page level
>   *	allocator with @gfp_mask flags.  Map them into contiguous
>   *	kernel virtual space, using a pagetable protection of @prot.
> + *
> + *	Reclaim modifiers in @gfp_mask - __GFP_NORETRY, __GFP_REPEAT
> + *	and __GFP_NOFAIL are not supported

Maybe add a BUILD_BUG or a WARN_ON_ONCE to catch new occurrences?