lightnvm: pblk: fail gracefully on line alloc. failure

In the event of a line failing to allocate, fail gracefully and stop the
pipeline to avoid more write failing in the same place.

Signed-off-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <mb@lightnvm.io>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/lightnvm/pblk-init.c b/drivers/lightnvm/pblk-init.c
index 9a984abd3dfe..44f9ec8d4c2a 100644
--- a/drivers/lightnvm/pblk-init.c
+++ b/drivers/lightnvm/pblk-init.c
@@ -1047,6 +1047,11 @@ static int pblk_lines_init(struct pblk *pblk)
                 nr_free_chks += pblk_setup_line_meta(pblk, line, chunk_meta, i);
         }
 
+        if (!nr_free_chks) {
+                pr_err("pblk: too many bad blocks prevent for sane instance\n");
+                return -EINTR;
+        }
+
         pblk_set_provision(pblk, nr_free_chks);
 
         kfree(chunk_meta);