Re: [RFC 03/11] mm: remove SWAP_DIRTY in ttu

[Anshuman Khandual]

On 03/02/2017 12:09 PM, Minchan Kim wrote:
> If we found lazyfree page is dirty, ttuo can just SetPageSwapBakced
> in there like PG_mlocked page and just return with SWAP_FAIL which
> is very natural because the page is not swappable right now so that
> vmscan can activate it. There is no point to introduce new return
> value SWAP_DIRTY in ttu at the moment.

Yeah makes sense. In the process, SetPageSwapBacked marking of the page
is moved from the shrink_page_list() to try_to_unmap_one().