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SubjectRe: dm bufio: Reduce dm_bufio_lock contention


On Tue, 4 Sep 2018, Michal Hocko wrote:

> Regarding other other workloads. AFAIR the problem was due to the
> wait_iff_congested in the direct reclaim. And I've been arguing that
> special casing __GFP_NORETRY is not a propoer way to handle that case.
> We have PF_LESS_THROTTLE to handle cases where the caller cannot be
> really throttled because it is a part of the congestion control. I dunno
> what happened in that regards since then though.
> --
> Michal Hocko
> SUSE Labs

So, could you take this patch https://patchwork.kernel.org/patch/10505523/
and commit it to the kernel?

You agreed with that patch, but you didn't commit it.

Mikulas

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