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 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.





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