From 2743f865543c0c4a5e12fc13edb2bf89a6e9687c Mon Sep 17 00:00:00 2001
From: Jaegeuk Kim <jaegeuk@kernel.org>
Date: Sat, 28 Jun 2014 01:00:41 +0900
Subject: [PATCH] f2fs: check bdi->dirty_exceeded when trying to skip data
 writes

If we don't check the current backing device status, balance_dirty_pages can
fall into infinite pausing routine.

This can be occurred when a lot of directories make a small number of dirty
dentry pages including files.

Reported-by: Brian Chadwick <brianchad@westnet.com.au>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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Reading git-format-patch failed