linux-kernel - Round up the average EC for recovered EB to defer their reuse

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Date:   Tue, 18 Sep 2018 23:05:20 +1000
From:   Andrew Worsley <amworsley@...il.com>
To:     Artem Bityutskiy <dedekind1@...il.com>,
        Richard Weinberger <richard@....at>,
        David Woodhouse <dwmw2@...radead.org>,
        Brian Norris <computersforpeace@...il.com>,
        Boris Brezillon <boris.brezillon@...tlin.com>,
        Marek Vasut <marek.vasut@...il.com>,
        linux-mtd@...ts.infradead.org (open list:UNSORTED BLOCK IMAGES (UBI)),
        linux-kernel@...r.kernel.org (open list)
Subject: Round up the average EC for recovered EB to defer their reuse

We suggest rounding up the EC(Erase Count) for recovered EB(Erase Blocks) so
they are less likely than averaged to be re-used. The EBs which have lost their
EC header page and need to be reset are likely to be more worn than average
so it is better to use a larger than average number rather than less than
average number.

        Andrew Worsley