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lightnvm: pblk: add initialization check

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Add a sanity check to the pblk initialization sequence in order to
ensure that enough LUNs have been allocated to store the line metadata.

Signed-off-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <matias@cnexlabs.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Javier González 2017-06-30 17:56:41 +02:00 committed by Jens Axboe
parent ee8d5c1ad5
commit b5e063a286
1 changed files with 6 additions and 0 deletions
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6
drivers/lightnvm/pblk-init.c
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@ -716,6 +716,12 @@ add_emeta_page:
lm->emeta_bb = geo->nr_luns - i; lm->emeta_bb = geo->nr_luns - i;
lm->min_blk_line = 1 + DIV_ROUND_UP(lm->smeta_sec + lm->emeta_sec[0], lm->min_blk_line = 1 + DIV_ROUND_UP(lm->smeta_sec + lm->emeta_sec[0],
geo->sec_per_blk); geo->sec_per_blk);
if (lm->min_blk_line > lm->blk_per_line) {
pr_err("pblk: config. not supported. Min. LUN in line:%d\n",
lm->blk_per_line);
ret = -EINVAL;
goto fail;
}
ret = pblk_lines_alloc_metadata(pblk); ret = pblk_lines_alloc_metadata(pblk);
if (ret) if (ret)