md: fix up raid1/raid10 unplugging.
authorNeilBrown <neilb@suse.de>
Mon, 18 Apr 2011 08:25:43 +0000 (18:25 +1000)
committerNeilBrown <neilb@suse.de>
Mon, 18 Apr 2011 08:25:43 +0000 (18:25 +1000)
We just need to make sure that an unplug event wakes up the md
thread, which is exactly what mddev_check_plugged does.

Also remove some plug-related code that is no longer needed.

Signed-off-by: NeilBrown <neilb@suse.de>

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