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mm: do_mincore() cleanup 

Two cleanups:
1. remove redundant codes for hugetlb pages.
2. end = pmd_addr_end(addr, end) restricts [addr, end) within PMD_SIZE,
   this may increase do_mincore() calls, remove it.

Signed-off-by: Jianguo Wu <wujianguo@huawei.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Minchan Kim <minchan.kim@gmail.com>
Cc: qiuxishi <qiuxishi@huawei.com>
Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
hifive-unleashed-5.1
Jianguo Wu 2014-01-23 15:53:19 -08:00 committed by Linus Torvalds
parent b30afea019
commit c980e66a55
1 changed files with 0 additions and 7 deletions
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7
mm/mincore.c
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@ -225,13 +225,6 @@ static long do_mincore(unsigned long addr, unsigned long pages, unsigned char *v
end = min(vma->vm_end, addr + (pages << PAGE_SHIFT));
if (is_vm_hugetlb_page(vma)) {
mincore_hugetlb_page_range(vma, addr, end, vec);
return (end - addr) >> PAGE_SHIFT;
}
end = pmd_addr_end(addr, end);
if (is_vm_hugetlb_page(vma))
mincore_hugetlb_page_range(vma, addr, end, vec);
else