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    Subject[GIT PULL 38/58] lightnvm: pblk: ensure right bad block calculation
    Date
    From: Javier González <javier@cnexlabs.com>

    Make sure that the variable controlling block threshold for allocating
    extra metadata sectors in case of a line with bad blocks does not get a
    negative value. Otherwise, the line will be marked as corrupted and
    wasted.

    Signed-off-by: Javier González <javier@cnexlabs.com>
    Signed-off-by: Matias Bjørling <m@bjorling.me>
    ---
    drivers/lightnvm/pblk-init.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    diff --git a/drivers/lightnvm/pblk-init.c b/drivers/lightnvm/pblk-init.c
    index 3c37491..c7239c4 100644
    --- a/drivers/lightnvm/pblk-init.c
    +++ b/drivers/lightnvm/pblk-init.c
    @@ -710,7 +710,7 @@ static int pblk_lines_init(struct pblk *pblk)
    goto add_emeta_page;
    }

    - lm->emeta_bb = geo->nr_luns - i;
    + lm->emeta_bb = geo->nr_luns > i ? geo->nr_luns - i : 0;

    lm->min_blk_line = 1;
    if (geo->nr_luns > 1)
    --
    2.9.3
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