Josef, can you please review this?
On Mon, Jun 20, 2016 at 09:18:52AM +0800, Wang Xiaoguang wrote:
> This issue was found when testing in-band dedupe enospc behaviour,
> sometimes run_one_delayed_ref() may fail for enospc reason, then
> __btrfs_run_delayed_refs（）will return, but forget to add num_
On Mon, Jun 20, 2016 at 09:18:52AM +0800, Wang Xiaoguang wrote:
> @@ -2665,7 +2665,10 @@ static noinline int __btrfs_run_delayed_refs(struct
> btrfs_trans_handle *trans,
>
> btrfs_free_delayed_extent_op(extent_op);
> if (ret) {
> + spin_lock(&delay
This issue was found when testing in-band dedupe enospc behaviour,
sometimes run_one_delayed_ref() may fail for enospc reason, then
__btrfs_run_delayed_refs（）will return, but forget to add num_heads_read
back, which will trigger "WARN_ON(delayed_refs->num_heads_ready == 0)" in
btrfs_select_ref_head
