Re: [PATCH mm-unstable] mm: move folio_set_compound_order() to mm/internal.h

[Sidhartha Kumar <sidhartha.kumar@oracle.com>]

On 12/14/22 7:44 PM, Muchun Song wrote:
> 
> 
>> On Dec 14, 2022, at 05:20, Sidhartha Kumar <sidhartha.kumar@oracle.com> wrote:
>>
>> folio_set_compound_order() is moved to an mm-internal location so external
>> folio users cannot misuse this function. Change the name of the function
>> to folio_set_order() and use WARN_ON_ONCE() rather than BUG_ON. Also,
>> handle the case if a non-large folio is passed and add clarifying comments
>> to the function.
>>
>> Link: https://lore.kernel.org/lkml/20221207223731.32784-1-sidhartha.kumar@oracle.com/T/
>> Fixes: 9fd330582b2f ("mm: add folio dtor and order setter functions")
>>
>> Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com>
>> Suggested-by: Mike Kravetz <mike.kravetz@oracle.com>
>> Suggested-by: Muchun Song <songmuchun@bytedance.com>
>> Suggested-by: Matthew Wilcox <willy@infradead.org>
>> Suggested-by: John Hubbard <jhubbard@nvidia.com>
> 
> Reviewed-by: Muchun Song <songmuchun@bytedance.com>
Hi Muchun,

Does this review include the change from

+	if (!folio_test_large(folio)) {
+		WARN_ON_ONCE(order);
+		return;
+	}

to

if (WARN_ON_ONCE(!folio_test_large(folio)))
		return;

discussed in in this thread?

Thanks,
Sidhartha Kumar
> 
> Thanks.