lightnvm: pblk: stop taking the free lock in in pblk_lines_free

pblk_line_meta_free might sleep (it can end up calling vfree, depending
on how we allocate lba lists), and this can lead to a BUG()
if we wake up on a different cpu and release the lock.

As there is no point of grabbing the free lock when pblk has shut down,
remove the lock.

Signed-off-by: Hans Holmberg <hans.holmberg@cnexlabs.com>
Signed-off-by: Matias Bjørling <mb@lightnvm.io>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

1 files changed, 0 insertions, 2 deletions

diff --git a/drivers/lightnvm/pblk-init.c b/drivers/lightnvm/pblk-init.c
index f9a3e47b6a93..eb0135c77805 100644
--- a/drivers/lightnvm/pblk-init.c
+++ b/drivers/lightnvm/pblk-init.c
@@ -584,14 +584,12 @@ static void pblk_lines_free(struct pblk *pblk)
         struct pblk_line *line;
         int i;
 
-        spin_lock(&l_mg->free_lock);
         for (i = 0; i < l_mg->nr_lines; i++) {
                 line = &pblk->lines[i];
 
                 pblk_line_free(line);
                 pblk_line_meta_free(l_mg, line);
         }
-        spin_unlock(&l_mg->free_lock);
 
         pblk_line_mg_free(pblk);