[PATCH v2 1/3] tracing: Remove unneeded event_mutex lock in event_trigger_regex_release()

[Steven Rostedt]

From: Steven Rostedt <rost...@goodmis.org>

In event_trigger_regex_release(), the only code is:

        mutex_lock(&event_mutex);
        if (file->f_mode & FMODE_READ)
                seq_release(inode, file);
        mutex_unlock(&event_mutex);

        return 0;

There's nothing special about the file->f_mode or the seq_release() that
requires any locking. Remove the unnecessary locks.

Acked-by: Masami Hiramatsu (Google) <mhira...@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rost...@goodmis.org>
---
 kernel/trace/trace_events_trigger.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/kernel/trace/trace_events_trigger.c 
b/kernel/trace/trace_events_trigger.c
index 7795af600466..e5dcfcbb2cd5 100644
--- a/kernel/trace/trace_events_trigger.c
+++ b/kernel/trace/trace_events_trigger.c
@@ -314,13 +314,9 @@ static ssize_t event_trigger_regex_write(struct file *file,
 
 static int event_trigger_regex_release(struct inode *inode, struct file *file)
 {
-       mutex_lock(&event_mutex);
-
        if (file->f_mode & FMODE_READ)
                seq_release(inode, file);
 
-       mutex_unlock(&event_mutex);
-
        return 0;
 }
 
-- 
2.51.0