commit a84ebb837b419787c2ece74efa566c998929cead
author Javier González <jg@lightnvm.io> Fri Jun 30 17:56:43 2017 +0200
committer Jens Axboe <axboe@kernel.dk> Fri Jun 30 11:08:18 2017 -0600
tree d2479e93d9192bf36faac59229863ea41c3e88d4
parent 076984669db8476c3c9a9f6d0c59a8e2c7e0092f

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>

drivers/lightnvm/pblk-core.c

diff --git a/drivers/lightnvm/pblk-core.c b/drivers/lightnvm/pblk-core.c
index e6f42cd..11fe0c5 100644
--- 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));