linux-kernel - Re: [PATCH] [RESEND] vmscan.c: add a sysctl entry for controlling memory reclaim IO congestion

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Message-ID: <20190918122738.GE12770@dhcp22.suse.cz>
Date:   Wed, 18 Sep 2019 14:27:38 +0200
From:   Michal Hocko <mhocko@...nel.org>
To:     Lin Feng <linf@...gsu.com>
Cc:     corbet@....net, mcgrof@...nel.org, akpm@...ux-foundation.org,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        keescook@...omium.org, mchehab+samsung@...nel.org,
        mgorman@...hsingularity.net, vbabka@...e.cz, ktkhai@...tuozzo.com,
        hannes@...xchg.org, willy@...radead.org,
        kbuild test robot <lkp@...el.com>
Subject: Re: [PATCH] [RESEND] vmscan.c: add a sysctl entry for controlling
 memory reclaim IO congestion_wait length

Please do not post a new version with a minor compile fixes until there
is a general agreement on the approach. Willy had comments which really
need to be resolved first. And I do agree with him. Having an explicit
tunable seems just wrong.

Also does this
[...]
> Reported-by: kbuild test robot <lkp@...el.com>

really hold? Because it suggests that the problem has been spotted by
the kbuild bot which is kinda unexpected... I suspect you have just
added that for the minor compilation issue that you have fixed since the
last version.
-- 
Michal Hocko
SUSE Labs