| commit | 166f66d0bc94a14ec4bc6ee6ab079532df4a8d9e | [log] [tgz] |
|---|---|---|
| author | Zhaolei <zhaolei@cn.fujitsu.com> | Thu Aug 06 22:39:36 2015 +0800 |
| committer | Chris Mason <clm@fb.com> | Sun Aug 09 07:07:14 2015 -0700 |
| tree | 276972a024d58650bcf98113bfd264b9ff1c3fb5 | |
| parent | 9ed0dea09fc5e8cb1926c15fc986a46a2db43da6 [diff] |
btrfs: Add WARN_ON() for double lock in btrfs_tree_lock() When a task trying to double lock a extent buffer, there are no lockdep warning about it because this lock may be in "blocking_lock" state, and make us hard to debug. This patch add a WARN_ON() for above condition, it can not report all deadlock cases(as lock between tasks), but at least helps us some. Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com> Signed-off-by: Chris Mason <clm@fb.com>