From 60292bcc1b240a6708aa531c8ece1da2a78d560a Mon Sep 17 00:00:00 2001
From: Tejun Heo <tj@kernel.org>
Date: Tue, 18 Aug 2015 14:54:54 -0700
Subject: [PATCH] writeback: explain why @inode is allowed to be NULL for
 inode_congested()

Signed-off-by: Tejun Heo <tj@kernel.org>
Suggested-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@fb.com>
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Reading git-format-patch failed