[PATCH] md: expose device slot information via sysfs
This the role that a device has in an array can be viewed and set. Signed-off-by: NNeil Brown <neilb@suse.de> Acked-by: NGreg KH <greg@kroah.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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