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fork: use vma_pages() to simplify the code 

The current code can be replaced by vma_pages().  So use it to simplify
the code.

[akpm@linux-foundation.org: initialise `len' at its definition site]
Signed-off-by: Huang Shijie <shijie8@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Huang Shijie 2012-07-30 14:42:30 -07:00 committed by Linus Torvalds
parent bc452b4b65
commit b2412b7fa7
1 changed files with 2 additions and 2 deletions
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4
kernel/fork.c
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@ -391,8 +391,8 @@ static int dup_mmap(struct mm_struct *mm, struct mm_struct *oldmm)
}
charge = 0;
if (mpnt->vm_flags & VM_ACCOUNT) {
unsigned long len;
len = (mpnt->vm_end - mpnt->vm_start) >> PAGE_SHIFT;
unsigned long len = vma_pages(mpnt);
if (security_vm_enough_memory_mm(oldmm, len)) /* sic */
goto fail_nomem;
charge = len;