lightnvm: pblk: set line bitmap check under debug

Do bitmap checks only when debug mode is enable. The line bitmap used
for mapping to physical addresses is fairly large (~512KB) and it is
expensive to do this checks on the fast path.

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

diff --git a/drivers/lightnvm/pblk-core.c b/drivers/lightnvm/pblk-core.c
index e6f42cddc8ecc6f10adddc457abc71ff86c57d85..11fe0c5b2a9cf1e3ddf9bd5dedd0549c7a0f9bd1 100644 (file)
--- a/drivers/lightnvm/pblk-core.c
+++ b/drivers/lightnvm/pblk-core.c
@@ -1561,11 +1561,14 @@ static void pblk_line_should_sync_meta(struct pblk *pblk)
 void pblk_line_close(struct pblk *pblk, struct pblk_line *line)
 {
        struct pblk_line_mgmt *l_mg = &pblk->l_mg;
-       struct pblk_line_meta *lm = &pblk->lm;
        struct list_head *move_list;
 
+#ifdef CONFIG_NVM_DEBUG
+       struct pblk_line_meta *lm = &pblk->lm;
+
        WARN(!bitmap_full(line->map_bitmap, lm->sec_per_line),
                                "pblk: corrupt closed line %d\n", line->id);
+#endif
 
        spin_lock(&l_mg->free_lock);
        WARN_ON(!test_and_clear_bit(line->meta_line, &l_mg->meta_bitmap));