tracefs: Remove kerneldoc from struct eventfs_file

The struct eventfs_file is a local structure and should not be parsed by
kernel doc. It also does not fully follow the kerneldoc format and is
causing kerneldoc to spit out errors. Replace the /** to /* so that
kerneldoc no longer processes this structure.

Also format the comments of the delete union of the structure to be a bit
better.

Link: https://lore.kernel.org/linux-trace-kernel/20230818201414.2729745-1-willy@infradead.org/
Link: https://lore.kernel.org/linux-trace-kernel/20230822053313.77aa3397@rorschach.local.home

Cc: Mark Rutland <mark.rutland@arm.com>
Reported-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>

fs/tracefs/event_inode.c

@@ -27,7 +27,7 @@ struct eventfs_inode {
 	struct list_head	e_top_files;
 };
 
-/**
+/*
  * struct eventfs_file - hold the properties of the eventfs files and
  *                       directories.
  * @name:	the name of the file or directory to create
@@ -48,10 +48,16 @@ struct eventfs_file {
 	struct eventfs_inode		*ei;
 	const struct file_operations	*fop;
 	const struct inode_operations	*iop;
+	/*
+	 * Union - used for deletion
+	 * @del_list:	list of eventfs_file to delete
+	 * @rcu:	eventfs_file to delete in RCU
+	 * @is_freed:	node is freed if one of the above is set
+	 */
 	union {
-		struct list_head	del_list; /* list of eventfs_file to delete */
-		struct rcu_head		rcu; /* eventfs_file to delete */
-		unsigned long		is_freed; /* Freed if one of the above is set */
+		struct list_head	del_list;
+		struct rcu_head		rcu;
+		unsigned long		is_freed;
 	};
 	void				*data;
 	umode_t				mode;