From: Huang Shijie <shijie8@gmail.com>
To: akpm@linux-foundation.org
Cc: linux-kernel@vger.kernel.org, Huang Shijie <shijie8@gmail.com>
Subject: [PATCH] fork: use vma_pages() to simplify the code
Date: Wed, 30 May 2012 14:50:51 -0400 [thread overview]
Message-ID: <1338403851-4119-1-git-send-email-shijie8@gmail.com> (raw)
The current code can be replaced by vma_pages().
So use it to simplify the code.
Signed-off-by: Huang Shijie <shijie8@gmail.com>
---
kernel/fork.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/kernel/fork.c b/kernel/fork.c
index 3417e1b..3decf6d 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -386,7 +386,7 @@ 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;
+ len = vma_pages(mpnt);
if (security_vm_enough_memory_mm(oldmm, len)) /* sic */
goto fail_nomem;
charge = len;
--
1.7.4.4
reply other threads:[~2012-05-30 6:47 UTC|newest]
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