Re: [PATCH 10/28] mm: only allow page table mappings for built-in zsmalloc

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On Thu, Apr 09, 2020 at 09:08:26AM -0700, Minchan Kim wrote:
> On Wed, Apr 08, 2020 at 01:59:08PM +0200, Christoph Hellwig wrote:
> > This allows to unexport map_vm_area and unmap_kernel_range, which are
> > rather deep internal and should not be available to modules.
> 
> Even though I don't know how many usecase we have using zsmalloc as
> module(I heard only once by dumb reason), it could affect existing
> users. Thus, please include concrete explanation in the patch to
> justify when the complain occurs.

The justification is 'we can unexport functions that have no sane reason
of being exported in the first place'.

The Changelog pretty much says that.




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