diff options
Diffstat (limited to 'include/linux/lockdep.h')
| -rw-r--r-- | include/linux/lockdep.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h index b25d1b53df0d..9ec026f8d09e 100644 --- a/include/linux/lockdep.h +++ b/include/linux/lockdep.h @@ -149,6 +149,12 @@ struct lock_list { struct lock_class *class; struct stack_trace trace; int distance; + + /*The parent field is used to implement breadth-first search,and + *the bit 0 is reused to indicate if the lock has been accessed + *in BFS. + */ + struct lock_list *parent; }; /* |