From: NeilBrown <neilb@suse.de>
Date: Wed, 11 May 2011 04:26:30 +0000 (+1000)
Subject: md/bitmap: fix saving of events_cleared and other state.
X-Git-Tag: v2.6.39.1~76
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a6b2de6dae30c9565999760b91d1c22f77613c9d;p=pandora-kernel.git

md/bitmap: fix saving of events_cleared and other state.

commit 8258c53208d7a9b7207e7d4dae36d2ea384cb278 upstream.

If a bitmap is found to be 'stale' the events_cleared value
is set to match 'events'.
However if the array is degraded this does not get stored on disk.
This can subsequently lead to incorrect behaviour.

So change bitmap_update_sb to always update events_cleared in the
superblock from the known events_cleared.
For neatness also set ->state from ->flags.
This requires updating ->state whenever we update ->flags, which makes
sense anyway.

This is suitable for any active -stable release.

Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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