From: Stefan Behrens <sbehrens@giantdisaster.de>
Date: Mon, 5 Nov 2012 16:54:08 +0000 (+0100)
Subject: Btrfs: disallow mutually exclusive admin operations from user mode
X-Git-Tag: v3.8-rc1~71^2~66
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5ac00add;p=pandora-kernel.git

Btrfs: disallow mutually exclusive admin operations from user mode

Btrfs admin operations that are manually started from user mode
and that cannot be executed at the same time return -EINPROGRESS.
A common way to enter and leave this locked section is introduced
since it used to be specific to the balance operation.

Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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