From b8c2f3474f1077599ec6e90c2f263f17055cc3d8 Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@lst.de>
Date: Tue, 8 Jun 2010 18:15:07 +0200
Subject: [PATCH] writeback: simplify wakeup_flusher_threads

bdi_writeback_all only has one caller, so fold it to simplify the code and
flatten the call stack.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
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