Hi All,
On 04.12.2020 14:42, Qian Cai wrote:
> On Thu, 2020-12-03 at 23:23 +0800, carver4lio@xxxxxxx wrote:
>> From: Hailong Liu <liu.hailong6@xxxxxxxxxx>
>>
>> When system in the booting stage, pages span from [start, end] of a memblock
>> are freed to buddy in a order as large as possible (less than MAX_ORDER) at
>> first, then decrease gradually to a proper order(less than end) in a loop.
>>
>> However, *min(MAX_ORDER - 1UL, __ffs(start))* can not get the largest order
>> in some cases.
>> Instead, *__ffs(end - start)* may be more appropriate and meaningful.
>>
>> Signed-off-by: Hailong Liu <liu.hailong6@xxxxxxxxxx>
> Reverting this commit on the top of today's linux-next fixed boot crashes on
> multiple NUMA systems.
I confirm. Reverting commit 4df001639c84 ("mm/memblock: use a more
appropriate order calculation when free memblock pages") on top of linux
next-20201204 fixed booting of my ARM32bit test systems.
Best regards
--
Marek Szyprowski, PhD
Samsung R&D Institute Poland
