Commit 7ec373cf authored Jan 23, 2008 by Mark Fasheh

ocfs2: document access rules for blocked_lock_list



ocfs2_super->blocked_lock_list and ocfs2_super->blocked_lock_count have some
usage restrictions which aren't immediately obvious to anyone reading the
code. It's a good idea to document this so that we avoid making costly
mistakes in the future.

Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>

parent 116ba5d5

fs/ocfs2/ocfs2.h

+6 −0

Original line number	Diff line number	Diff line
		@@ -262,6 +262,12 @@ struct ocfs2_super
		unsigned long dc_wake_sequence;
		unsigned long dc_work_sequence;

		/*
		* Any thread can add locks to the list, but the downconvert
		* thread is the only one allowed to remove locks. Any change
		* to this rule requires updating
		* ocfs2_downconvert_thread_do_work().
		*/
		struct list_head blocked_lock_list;
		unsigned long blocked_lock_count;