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Message-ID: <20200408151203.GN20730@hirez.programming.kicks-ass.net>
Date: Wed, 8 Apr 2020 17:12:03 +0200
From: Peter Zijlstra <peterz@...radead.org>
To: Randy Dunlap <rdunlap@...radead.org>
Cc: Christoph Hellwig <hch@....de>,
Andrew Morton <akpm@...ux-foundation.org>,
"K. Y. Srinivasan" <kys@...rosoft.com>,
Haiyang Zhang <haiyangz@...rosoft.com>,
Stephen Hemminger <sthemmin@...rosoft.com>,
Wei Liu <wei.liu@...nel.org>, x86@...nel.org,
David Airlie <airlied@...ux.ie>,
Daniel Vetter <daniel@...ll.ch>,
Laura Abbott <labbott@...hat.com>,
Sumit Semwal <sumit.semwal@...aro.org>,
Sakari Ailus <sakari.ailus@...ux.intel.com>,
Minchan Kim <minchan@...nel.org>,
Nitin Gupta <ngupta@...are.org>,
Robin Murphy <robin.murphy@....com>,
Christophe Leroy <christophe.leroy@....fr>,
linuxppc-dev@...ts.ozlabs.org, linux-hyperv@...r.kernel.org,
dri-devel@...ts.freedesktop.org, linaro-mm-sig@...ts.linaro.org,
linux-arch@...r.kernel.org, linux-mm@...ck.org,
iommu@...ts.linux-foundation.org,
linux-arm-kernel@...ts.infradead.org, linux-s390@...r.kernel.org,
bpf@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 10/28] mm: only allow page table mappings for built-in
zsmalloc
On Wed, Apr 08, 2020 at 08:01:00AM -0700, Randy Dunlap wrote:
> Hi,
>
> On 4/8/20 4:59 AM, Christoph Hellwig wrote:
> > diff --git a/mm/Kconfig b/mm/Kconfig
> > index 36949a9425b8..614cc786b519 100644
> > --- a/mm/Kconfig
> > +++ b/mm/Kconfig
> > @@ -702,7 +702,7 @@ config ZSMALLOC
> >
> > config ZSMALLOC_PGTABLE_MAPPING
> > bool "Use page table mapping to access object in zsmalloc"
> > - depends on ZSMALLOC
> > + depends on ZSMALLOC=y
>
> It's a bool so this shouldn't matter... not needed.
My mm/Kconfig has:
config ZSMALLOC
tristate "Memory allocator for compressed pages"
depends on MMU
which I think means it can be modular, no?
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