Messages in this thread | | | Subject | Re: [PATCH v4 2/3] mm: Add support for kmem caches in DMA32 zone | From | Vlastimil Babka <> | Date | Thu, 6 Dec 2018 10:34:38 +0100 |
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On 12/6/18 4:49 AM, Nicolas Boichat wrote: >> So it would be fine even unchanged. The check would anyway need some >> more love to catch the same with __GFP_DMA to be consistent and cover >> all corner cases. > Yes, the test is not complete. If we really wanted this to be > accurate, we'd need to check that GFP_* exactly matches SLAB_CACHE_*. > > The only problem with dropping this is test that we should restore > GFP_DMA32 warning/errors somewhere else (as Christopher pointed out > here: https://lkml.org/lkml/2018/11/22/430), especially for kmalloc > case.
I meant just dropping that patch hunk, not the whole test. Then the test stays as it is and will keep warning anyone calling kmalloc(GFP_DMA32). It would also warn anyone calling kmem_cache_alloc(GFP_DMA32) on SLAB_CACHE_DMA32 cache, but since the gfp can be just dropped, and you as the only user of this so far will do that, it's fine?
> Maybe this can be done in kmalloc_slab.
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