linux-kernel - [PATCH] kernfs: Change kernfs_node lockdep name to "kn->active"

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Date:   Thu,  2 Apr 2020 13:10:56 -0400
From:   Waiman Long <longman@...hat.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Tejun Heo <tj@...nel.org>
Cc:     linux-kernel@...r.kernel.org, Waiman Long <longman@...hat.com>
Subject: [PATCH] kernfs: Change kernfs_node lockdep name to "kn->active"

The kernfs_node lockdep tracking is being done on kn->active, the
active reference count. The other reference count (kn->count) is not
tracked by lockdep. So change the lockdep name to reflect what it is
tracking.

Signed-off-by: Waiman Long <longman@...hat.com>
---
 fs/kernfs/file.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/kernfs/file.c b/fs/kernfs/file.c
index 34366db3620d..fd6ddfe4cd94 100644
--- a/fs/kernfs/file.c
+++ b/fs/kernfs/file.c
@@ -1010,7 +1010,7 @@ struct kernfs_node *__kernfs_create_file(struct kernfs_node *parent,
 
 #ifdef CONFIG_DEBUG_LOCK_ALLOC
 	if (key) {
-		lockdep_init_map(&kn->dep_map, "kn->count", key, 0);
+		lockdep_init_map(&kn->dep_map, "kn->active", key, 0);
 		kn->flags |= KERNFS_LOCKDEP;
 	}
 #endif
-- 
2.18.1