On 15/03/2021 06:40, Qu Wenruo wrote:
> The difference against find_extent_buffer_nospinlock() is:
> - Also handles regular sectorsize == PAGE_SIZE case
> - No extent buffer refs increase/decrease
>   As extent buffer under IO must has non-zero refs.

Can these be merged into a single function? The sectorsie == PAGE_SIZE case
won't do anything for find_extent_buffer_nospinlock() and the 
atomic_inc_not_zero(&eb->refs) can be hidden behind a 'if (write)' check.

Note, I was looking at this version:

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