Re: [PATCH v2 07/19] btrfs: update num_extent_pages() to support subpage sized extent buffer

Johannes Thumshirn
2020-09-15T10:13:05Z

On 15/09/2020 12:07, Qu Wenruo wrote:
>
>
> On 2020/9/15 下午4:42, Johannes Thumshirn wrote:
>> On 15/09/2020 07:36, Qu Wenruo wrote:
>>> + * For sectorsize < PAGE_SIZE case, we only want to support 64K
>>> + * PAGE_SIZE, and ensured all tree blocks won't cross page boundary.
>>> + * So in that case we always got 1 page.
>>
>> Just to clarify, does this mean we won't support 512B sector size with 4K pages?
>>
> At least that's why I have planned.
>
> I think the current minimal 4K sector size is pretty reasonable.

OK thanks