From b5e063a2861a3af00fe3770e5fb85f936facbf42 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Javier=20Gonz=C3=A1lez?= Date: Fri, 30 Jun 2017 17:56:41 +0200 Subject: [PATCH] lightnvm: pblk: add initialization check MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe --- 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 @@ add_emeta_page: 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) -- 2.34.1