[PATCH v2 15/17] kernfs: Mark kernfs_open_node_lock as terminal lock

Waiman Long
2018-11-19T18:57:48Z

By making kernfs_open_node_lock a terminal spinlock, it reduces the
lockdep overhead when this lock is used.

Signed-off-by: Waiman Long <longman@redhat.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 dbf5bc2..a86fe22 100644
--- a/fs/kernfs/file.c
+++ b/fs/kernfs/file.c
@@ -29,7 +29,7 @@
* kernfs_open_file. kernfs_open_files are chained at
* kernfs_open_node->files, which is protected by kernfs_open_file_mutex.
*/
-static DEFINE_SPINLOCK(kernfs_open_node_lock);
+static DEFINE_TERMINAL_SPINLOCK(kernfs_open_node_lock);
static DEFINE_MUTEX(kernfs_open_file_mutex);

struct kernfs_open_node {
--
1.8.3.1