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 <[email protected]> Signed-off-by: Matias Bjørling <[email protected]> --- drivers/lightnvm/pblk-init.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/lightnvm/pblk-init.c b/drivers/lightnvm/pblk-init.c index 025d8fe52154..1b0f61233c21 100644 --- a/drivers/lightnvm/pblk-init.c +++ b/drivers/lightnvm/pblk-init.c @@ -716,6 +716,12 @@ static int pblk_lines_init(struct pblk *pblk) lm->emeta_bb = geo->nr_luns - i; lm->min_blk_line = 1 + DIV_ROUND_UP(lm->smeta_sec + lm->emeta_sec[0], 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); if (ret) -- 2.7.4
