From: Jonathan Brassow <jbrassow@redhat.com>
Date: Tue, 6 Jan 2009 03:04:57 +0000 (+0000)
Subject: dm raid1: fix error count
X-Git-Tag: v2.6.27.12~80
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9ab8e0d293dd74374791af4812012664b26d4e6f;p=pandora-kernel.git

dm raid1: fix error count

commit d460c65a6a9ec9e0d284864ec3a9a2d1b73f0e43 upstream.

Always increase the error count when I/O on a leg of a mirror fails.

The error count is used to decide whether to select an alternative
mirror leg.  If the target doesn't use the "handle_errors" feature, the
error count is not updated and the bio can get requeued forever by the
read callback.

Fix it by increasing error_count before the handle_errors feature
checking.

Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

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