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target: remove some smp_mb__after_atomic()s
atomic_inc_return() already does an implicit memory barrier and the second case was moved from an atomic to a plain flag operation. If a barrier were needed in the second case, it would have to be smp_mb(), not a variant optimized away for x86 and other architectures. Signed-off-by: Joern Engel <joern@logfs.org> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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