linux-kernel - Re: [PATCH 3/5] mm/vmscan: Throttle reclaim when no progress is being made

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Message-id: <163218069080.3992.14261132300912173043@noble.neil.brown.name>
Date:   Tue, 21 Sep 2021 09:31:30 +1000
From:   "NeilBrown" <neilb@...e.de>
To:     "Mel Gorman" <mgorman@...hsingularity.net>
Cc:     "Linux-MM" <linux-mm@...ck.org>, "Theodore Ts'o" <tytso@....edu>,
        "Andreas Dilger" <adilger.kernel@...ger.ca>,
        "Darrick J . Wong" <djwong@...nel.org>,
        "Matthew Wilcox" <willy@...radead.org>,
        "Michal Hocko" <mhocko@...e.com>,
        "Dave Chinner" <david@...morbit.com>,
        "Rik van Riel" <riel@...riel.com>,
        "Vlastimil Babka" <vbabka@...e.cz>,
        "Johannes Weiner" <hannes@...xchg.org>,
        "Jonathan Corbet" <corbet@....net>,
        "Linux-fsdevel" <linux-fsdevel@...r.kernel.org>,
        "LKML" <linux-kernel@...r.kernel.org>,
        "Mel Gorman" <mgorman@...hsingularity.net>
Subject: Re: [PATCH 3/5] mm/vmscan: Throttle reclaim when no progress is being made

On Mon, 20 Sep 2021, Mel Gorman wrote:
> +
> +		reclaim_throttle(pgdat, VMSCAN_THROTTLE_NOPROGRESS, HZ/10);

We always seem to pass "HZ/10" to reclaim_throttle().  Should we just
hard-code that in the one place inside reclaim_throttle() itself?

NeilBrown