Re: [PATCH 0/5] Remove dependency on congestion_wait in mm/ v2

[Mel Gorman]

On Wed, Sep 29, 2021 at 11:09:09AM +0100, Mel Gorman wrote:
> This is a series that removes all calls to congestion_wait
> in mm/ and deletes wait_iff_congested. It's not a clever
> implementation but congestion_wait has been broken for a long time
> (https://lore.kernel.org/linux-mm/45d8b7a6-8548-65f5-cccf-9f451d4ae3d4@xxxxxxxxx/).
> Even if it worked, it was never a great idea. While excessive
> dirty/writeback pages at the tail of the LRU is one possibility that
> reclaim may be slow, there is also the problem of too many pages being
> isolated and reclaim failing for other reasons (elevated references,
> too many pages isolated, excessive LRU contention etc).
> 

Don't send series after taking time off. This is the completely wrong
set of patches, it's v1 again, sorry. I'll fix up a v3.

-- 
Mel Gorman
SUSE Labs