From: Lars Ellenberg <lars.ellenberg@linbit.com>
Date: Tue, 24 Jan 2012 15:58:11 +0000 (+0100)
Subject: drbd: introduce completion_ref and kref to struct drbd_request
X-Git-Tag: v3.8-rc1~78^2~18^2~62
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b406777e6496de346e8ee12fa64e1fe0adc02a78;p=pandora-kernel.git

drbd: introduce completion_ref and kref to struct drbd_request

cherry-picked and adapted from drbd 9 devel branch

completion_ref will count pending events necessary for completion.
kref is for destruction.

This only introduces these new members of struct drbd_request,
a followup patch will make actual use of them.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
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