From: Stefan Behrens <sbehrens@giantdisaster.de>
Date: Fri, 25 May 2012 14:06:09 +0000 (+0200)
Subject: Btrfs: add ioctl to get and reset the device stats
X-Git-Tag: v3.5-rc1~17^2~1^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c11d2c236cc260b36ef644700fbe99bcc7e7da33;p=pandora-kernel.git

Btrfs: add ioctl to get and reset the device stats

An ioctl interface is added to get the device statistic counters.
A second ioctl is added to atomically get and reset these counters.

Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
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