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SubjectRe: DISCONTIGMEM is deprecated
On Fri, Apr 19, 2019 at 07:05:21AM -0700, Matthew Wilcox wrote:
> On Fri, Apr 19, 2019 at 10:43:35AM +0100, Mel Gorman wrote:
> > DISCONTIG is essentially deprecated and even parisc plans to move to
> > SPARSEMEM so there is no need to be fancy, this patch simply disables
> > watermark boosting by default on DISCONTIGMEM.
> I don't think parisc is the only arch which uses DISCONTIGMEM for !NUMA
> scenarios. Grepping the arch/ directories shows:
> alpha (does support NUMA, but also non-NUMA DISCONTIGMEM)
> arc (for supporting more than 1GB of memory)
> ia64 (looks complicated ...)
> m68k (for multiple chunks of memory)
> mips (does support NUMA but also non-NUMA)
> parisc (both NUMA and non-NUMA)

i386 NUMA as well

> I'm not sure that these architecture maintainers even know that DISCONTIGMEM
> is deprecated. Adding linux-arch to the cc.

Sincerely yours,

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