From: Steven Whitehouse <swhiteho@redhat.com>
Date: Wed, 29 Sep 2010 14:04:18 +0000 (+0100)
Subject: GFS2: Improve journal allocation via sysfs
X-Git-Tag: v2.6.37-rc1~220^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=feb47ca9314666d920855b8a235032dea2b2caa4;p=pandora-kernel.git

GFS2: Improve journal allocation via sysfs

Recently a feature was added to GFS2 to allow journal id allocation
via sysfs. This patch builds upon that so that a negative journal id
will be treated as an error code to be passed back as the return code
from mount. This allows termination of the mount process if there is
a failure.

Also, the process has been updated so that the kernel will wait
for a journal id, even in the "spectator" case. This is required
in order to avoid mounting a filesystem in case there is an error
while joining the cluster. In the spectator case, 0 is written into
the file to indicate that all is well, and that mount should continue.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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