From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Date: Wed, 14 Mar 2012 17:04:00 +0000 (-0400)
Subject: xen/blkback: Make optional features be really optional.
X-Git-Tag: v3.4-rc3~12^2~10^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3389bb8bf76180eecaffdfa7dd5b35fa4a2ce9b5;p=pandora-kernel.git

xen/blkback: Make optional features be really optional.

They were using the xenbus_dev_fatal() function which would
change the state of the connection immediately. Which is not
what we want when we advertise optional features.

So make 'feature-discard','feature-barrier','feature-flush-cache'
optional.

Suggested-by: Jan Beulich <JBeulich@suse.com>
[v1: Made the discard function void and static]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
---

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