lightnvm: pblk: allow allocation of new lines during shutdown

When shutting down pblk the write buffer is flushed and if the
current line can't fit the data in the write buffer we need
to allocate a new line, so remove the check that prevents this.
Signed-off-by: NHans Holmberg <hans.holmberg@cnexlabs.com>
Reviewed-by: NJavier González <javier@cnexlabs.com>
Signed-off-by: NMatias Bjørling <mb@lightnvm.io>
Signed-off-by: NJens Axboe <axboe@kernel.dk>

drivers/lightnvm/pblk-core.c

@@ -1407,13 +1407,6 @@ struct pblk_line *pblk_line_replace_data(struct pblk *pblk)
 	l_mg->data_line = new;
 
 	spin_lock(&l_mg->free_lock);
-	if (pblk->state != PBLK_STATE_RUNNING) {
-		l_mg->data_line = NULL;
-		l_mg->data_next = NULL;
-		spin_unlock(&l_mg->free_lock);
-		goto out;
-	}
-
 	pblk_line_setup_metadata(new, l_mg, &pblk->lm);
 	spin_unlock(&l_mg->free_lock);