The dm emc hardware handler code memset the hardware handler structure to zero
AFTER it had initialized the structure's spinlock field.
Signed-Off-By: NAlasdair G Kergon <agk@redhat.com>
From: Dave Olien <dmo@osdl.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>