From: Hugh Dickins <hugh@veritas.com>
To: Andrew Morton <akpm@osdl.org>
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH] lower VM_DONTCOPY total_vm
Date: Mon, 11 Jul 2005 19:14:29 +0100 (BST) [thread overview]
Message-ID: <Pine.LNX.4.61.0507111912140.1522@goblin.wat.veritas.com> (raw)
dup_mmap of a VM_DONTCOPY vma forgot to lower the child's total_vm. (But
no way does this account for the recent report of total_vm seen too low.)
Signed-off-by: Hugh Dickins <hugh@veritas.com>
---
kernel/fork.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletion(-)
--- 2.6.13-rc2-mm1/kernel/fork.c 2005-07-07 12:33:21.000000000 +0100
+++ linux/kernel/fork.c 2005-07-11 18:47:33.000000000 +0100
@@ -210,8 +210,10 @@ static inline int dup_mmap(struct mm_str
struct file *file;
if (mpnt->vm_flags & VM_DONTCOPY) {
+ long pages = vma_pages(mpnt);
+ mm->total_vm -= pages;
__vm_stat_account(mm, mpnt->vm_flags, mpnt->vm_file,
- -vma_pages(mpnt));
+ -pages);
continue;
}
charge = 0;
reply other threads:[~2005-07-11 18:17 UTC|newest]
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