From 1d6f2097865e64963e90cce04980dce2f9fc023f Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Mon, 22 Aug 2011 11:52:28 +0800 Subject: autofs4 - fix lockdep splat in autofs When recursing down the locks when traversing a tree/list in get_next_positive_dentry() or get_next_positive_subdir() a lock can change from being nested to being a parent which breaks lockdep. This patch tells lockdep about what we did. Signed-off-by: Steven Rostedt Acked-by: Ian Kent Signed-off-by: Al Viro --- fs/autofs4/expire.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'fs/autofs4/expire.c') diff --git a/fs/autofs4/expire.c b/fs/autofs4/expire.c index 450f529a4ea..1feb68ecef9 100644 --- a/fs/autofs4/expire.c +++ b/fs/autofs4/expire.c @@ -124,6 +124,7 @@ start: /* Negative dentry - try next */ if (!simple_positive(q)) { spin_unlock(&p->d_lock); + lock_set_subclass(&q->d_lock.dep_map, 0, _RET_IP_); p = q; goto again; } @@ -186,6 +187,7 @@ again: /* Negative dentry - try next */ if (!simple_positive(ret)) { spin_unlock(&p->d_lock); + lock_set_subclass(&ret->d_lock.dep_map, 0, _RET_IP_); p = ret; goto again; } -- cgit v1.2.3-70-g09d2