From: Lars Ellenberg <lars.ellenberg@linbit.com>
Date: Wed, 27 Mar 2013 13:08:41 +0000 (+0100)
Subject: drbd: only fail empty flushes if no good data is reachable
X-Git-Tag: omap-for-v3.10/fixes-for-merge-window-part2~10^2~23
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7074e4a745799d521b17775f6d076d84dc7f8c50;p=pandora-kernel.git

drbd: only fail empty flushes if no good data is reachable

We completed empty flushes (blkdev_issue_flush()) with IO error
if we lost the local disk, even if we still have an established
replication link to a healthy remote disk.

Fix this to only report errors to upper layers,
if neither local nor remote data is reachable.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

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