Re: [PATCH v3 1/2] mm/vmalloc: add vmalloc_no_huge

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On Thu, 10 Jun 2021 14:09:09 -0700
Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote:

> On Thu, 10 Jun 2021 17:42:19 +0200 Claudio Imbrenda
> <imbrenda@xxxxxxxxxxxxx> wrote:
> 
> > The recent patches to add support for hugepage vmalloc mappings

I will put the proper commit ID here

> > added a flag for __vmalloc_node_range to allow to request small

and the name of the flag here

> > pages. This flag is not accessible when calling vmalloc, the only

and improve the wording in general ("order-0 pages" instead of "small
pages")

> > option is to call directly __vmalloc_node_range, which is not
> > exported.  
> 
> I can find no patch which adds such a flag to __vmalloc_node_range(). 
> I assume you're referring to "mm/vmalloc: switch to bulk allocator in
> __vmalloc_area_node()"?
> 
> Please be quite specific when identifying patches.  More specific than
> "the recent patches"!

sorry!

I was referring to this one: 
121e6f3258fe393e22c36f61a ("mm/vmalloc: hugepage vmalloc mappings")

which introduces the flag VM_NO_HUGE_VMAP

I will reword the commit to be more specific

> Also, it appears from the discussion at
> https://lkml.kernel.org/r/YKUWKFyLdqTYliwu@xxxxxxxxxxxxx that we'll be
> seeing a new version of "mm/vmalloc: switch to bulk allocator in
> __vmalloc_area_node()".  Would it be better to build these s390 fixes
> into the next version of that patch series rather than as a separate
> followup thing?
> 




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