[PATCH] lightnvm: pblk: adjust the position of the lock

[Hua Su]

Add lock protection for list operations.

Signed-off-by: Hua Su <suhua.ta...@gmail.com>
---
 drivers/lightnvm/pblk-core.c | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/drivers/lightnvm/pblk-core.c b/drivers/lightnvm/pblk-core.c
index 6944aac43b01..e490df217dac 100644
--- a/drivers/lightnvm/pblk-core.c
+++ b/drivers/lightnvm/pblk-core.c
@@ -1286,24 +1286,27 @@ int pblk_line_recov_alloc(struct pblk *pblk, struct 
pblk_line *line)
        list_del(&line->list);
 
        ret = pblk_line_prepare(pblk, line);
-       if (ret) {
-               list_add(&line->list, &l_mg->free_list);
-               spin_unlock(&l_mg->free_lock);
-               return ret;
-       }
-       spin_unlock(&l_mg->free_lock);
+       if (ret)
+               goto out;
 
        ret = pblk_line_alloc_bitmaps(pblk, line);
        if (ret)
-               return ret;
+               goto out;
 
        if (!pblk_line_init_bb(pblk, line, 0)) {
                list_add(&line->list, &l_mg->free_list);
+               spin_unlock(&l_mg->free_lock);
                return -EINTR;
        }
+       spin_unlock(&l_mg->free_lock);
 
        pblk_rl_free_lines_dec(&pblk->rl, line, true);
        return 0;
+
+out:
+       list_add(&line->list, &l_mg->free_list);
+       spin_unlock(&l_mg->free_lock);
+       return ret;
 }
 
 void pblk_line_recov_close(struct pblk *pblk, struct pblk_line *line)
-- 
2.19.1