writeback: add bdi_dirty_limit() kernel-doc

Clarify the bdi_dirty_limit() comment.

Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Jan Kara <jack@suse.cz>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
This commit is contained in:
Wu Fengguang 2011-03-02 17:14:34 -06:00
commit 6f71865627