mm/sparse.c: pass the __highest_present_section_nr + 1 to alloc_func()

In commit c4e1be9ec113 ("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/[email protected]
Signed-off-by: Wei Yang <[email protected]>
Reviewed-by: Andrew Morton <[email protected]>
Cc: David Rientjes <[email protected]>
Cc: Dave Hansen <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

1 files changed, 1 insertions, 1 deletions

diff --git a/mm/sparse.c b/mm/sparse.c
index 3570ff294ab1..f13f2723950a 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -522,7 +522,7 @@ static void __init alloc_usemap_and_memmap(void (*alloc_func)
 		map_count = 1;
 	}
 	/* ok, last chunk */
-	alloc_func(data, pnum_begin, NR_MEM_SECTIONS,
+	alloc_func(data, pnum_begin, __highest_present_section_nr+1,
 						map_count, nodeid_begin);
 }