Re: cgroups: warning for metadata allocation with GFP_NOFAIL (was Re: folio_alloc_buffers() doing allocations > order 1 with GFP_NOFAIL)

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On Mon, Nov 13, 2023 at 11:48:57AM -0800, Christoph Lameter wrote:
> On Fri, 10 Nov 2023, Matthew Wilcox wrote:
> 
> > > Maybe Christoph is playing with min_slab_order or something, so we're
> > > getting 8 pages per slab.  That's still only 2496 bytes.  Why are we
> > > calling into the large kmalloc path?  What's really going on here?
> > 
> > Christoph?
> 
> Sorry I thought I already answered that.
> 
> This was a boot with slub_min_order=5 that was inadvertently left in from a
> performance test.

Ah.  So do you think we need to fix this?




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