[PATCH] x86: mm: add_pfn_range_mapped: use meaningful index to teach clean_sort_range()

From: Lin Feng
Date: Mon Mar 18 2013 - 07:11:54 EST

Since add_range_with_merge() return the max none zero element of the array, it's
suffice to use it to instruct clean_sort_range() to do the sort. Or the former
assignment by add_range_with_merge() is nonsense because clean_sort_range()
will produce a accurate number of the sorted array and it never depends on

Cc: Jacob Shin <jacob.shin@xxxxxxx>
Cc: Yinghai Lu <yinghai@xxxxxxxxxx>
Signed-off-by: Lin Feng <linfeng@xxxxxxxxxxxxxx>
arch/x86/mm/init.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
index 59b7fc4..55ae904 100644
--- a/arch/x86/mm/init.c
+++ b/arch/x86/mm/init.c
@@ -310,7 +310,7 @@ static void add_pfn_range_mapped(unsigned long start_pfn, unsigned long end_pfn)
nr_pfn_mapped = add_range_with_merge(pfn_mapped, E820_X_MAX,
nr_pfn_mapped, start_pfn, end_pfn);
- nr_pfn_mapped = clean_sort_range(pfn_mapped, E820_X_MAX);
+ nr_pfn_mapped = clean_sort_range(pfn_mapped, nr_pfn_mapped);

max_pfn_mapped = max(max_pfn_mapped, end_pfn);


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