Re: [PATCH 6/7] mm: vmscan: move dirty pages out of the way until they're flushed

[Hillf Danton]

On February 03, 2017 3:20 AM Johannes Weiner wrote: 
> @@ -1063,7 +1063,7 @@ static unsigned long shrink_page_list(struct list_head 
> *page_list,
>                           PageReclaim(page) &&
>                           test_bit(PGDAT_WRITEBACK, &pgdat->flags)) {
>                               nr_immediate++;
> -                             goto keep_locked;
> +                             goto activate_locked;

Out of topic but relevant IMHO, I can't find where it is cleared by grepping:

$ grep -nr PGDAT_WRITEBACK  linux-4.9/mm
linux-4.9/mm/vmscan.c:1019:     test_bit(PGDAT_WRITEBACK, &pgdat->flags)) {
linux-4.9/mm/vmscan.c:1777:     set_bit(PGDAT_WRITEBACK, &pgdat->flags);

It was removed in commit 1d82de618dd 
("mm, vmscan: make kswapd reclaim in terms of nodes")

Is it currently maintained somewhere else, Mel and John?

thanks
Hillf