From: Jens Axboe <jens.axboe@oracle.com>
Date: Mon, 14 Sep 2009 11:12:40 +0000 (+0200)
Subject: writeback: use RCU to protect bdi_list
X-Git-Tag: v2.6.32-rc1~672^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cfc4ba5365449cb6b5c9f68d755a142f17da1e47;p=pandora-kernel.git

writeback: use RCU to protect bdi_list

Now that bdi_writeback_all() no longer handles integrity writeback,
it doesn't have to block anymore. This means that we can switch
bdi_list reader side protection to RCU.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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