dm thin: return -ENOSPC when erroring retry list due to out of data space

Otherwise -EIO would be returned when -ENOSPC should be used
consistently.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>

diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index 1c50c58..d2bbe8c 100644 (file)
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -666,16 +666,21 @@ static void requeue_io(struct thin_c *tc)
        requeue_deferred_cells(tc);
 }
 
-static void error_retry_list(struct pool *pool)
+static void error_retry_list_with_code(struct pool *pool, int error)
 {
        struct thin_c *tc;
 
        rcu_read_lock();
        list_for_each_entry_rcu(tc, &pool->active_thins, list)
-               error_thin_bio_list(tc, &tc->retry_on_resume_list, -EIO);
+               error_thin_bio_list(tc, &tc->retry_on_resume_list, error);
        rcu_read_unlock();
 }
 
+static void error_retry_list(struct pool *pool)
+{
+       return error_retry_list_with_code(pool, -EIO);
+}
+
 /*
  * This section of code contains the logic for processing a thin device's IO.
  * Much of the code depends on pool object resources (lists, workqueues, etc)
@@ -2297,7 +2302,7 @@ static void do_no_space_timeout(struct work_struct *ws)
        if (get_pool_mode(pool) == PM_OUT_OF_DATA_SPACE && !pool->pf.error_if_no_space) {
                pool->pf.error_if_no_space = true;
                notify_of_pool_mode_change_to_oods(pool);
-               error_retry_list(pool);
+               error_retry_list_with_code(pool, -ENOSPC);
        }
 }