AcoSail/kernel_optimize_test
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forked from luck/tmp_suning_uos_patched
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fork: use vma_pages() to simplify the code

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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; charge = 0;
if (mpnt->vm_flags & VM_ACCOUNT) { if (mpnt->vm_flags & VM_ACCOUNT) {
unsigned long len; unsigned long len = vma_pages(mpnt);
len = (mpnt->vm_end - mpnt->vm_start) >> PAGE_SHIFT;
if (security_vm_enough_memory_mm(oldmm, len)) /* sic */ if (security_vm_enough_memory_mm(oldmm, len)) /* sic */
goto fail_nomem; goto fail_nomem;
charge = len; charge = len;