mm/sparse.c: pass the __highest_present_section_nr + 1 to alloc_func()
In commit c4e1be9e ("mm, sparsemem: break out of loops early") __highest_present_section_nr is introduced to reduce the loop counts for present section. This is also helpful for usemap and memmap allocation. This patch uses __highest_present_section_nr + 1 to optimize the loop. Link: http://lkml.kernel.org/r/20180326081956.75275-1-richard.weiyang@gmail.comSigned-off-by: NWei Yang <richard.weiyang@gmail.com> Reviewed-by: NAndrew Morton <akpm@linux-foundation.org> Cc: David Rientjes <rientjes@google.com> Cc: Dave Hansen <dave.hansen@intel.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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