From: Ilya Dryomov <idryomov@gmail.com>
Date: Sun, 20 Jan 2013 13:57:57 +0000 (+0200)
Subject: Btrfs: fix "mutually exclusive op is running" error code
X-Git-Tag: v3.8-rc5~1^2~9^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2c0c9da02a2c4289350da6e54202a86602c0f926;p=pandora-kernel.git

Btrfs: fix "mutually exclusive op is running" error code

The error code that is returned in response to starting a mutually
exclusive operation when there is one already running got silently
changed from EINVAL to EINPROGRESS by 5ac00add.  Returning EINPROGRESS
to, say, add_dev, when rm_dev is running is misleading.  Furthermore,
the operation itself may want to use EINPROGRESS for other purposes.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
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