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由 nimisolo 提交于
If nr_new is 0 which means there's no region would be added, so just return to the caller. Signed-off-by: Nnimisolo <nimisolo@gmail.com> Cc: Alexander Kuleshov <kuleshovmail@gmail.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Tony Luck <tony.luck@intel.com> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Tang Chen <tangchen@cn.fujitsu.com> Cc: Wei Yang <weiyang@linux.vnet.ibm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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